1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005,2006 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #if defined _MSC_VER || defined __MINGW32__
37 #include <io.h> /* for _setmode() */
38 #include <fcntl.h> /* for _O_BINARY */
40 #if defined __CYGWIN__ || defined __EMX__
41 #include <io.h> /* for setmode(), O_BINARY */
42 #include <fcntl.h> /* for _O_BINARY */
46 #include <stdlib.h> /* for malloc() */
47 #include <string.h> /* for memcpy() */
48 #include <sys/types.h> /* for off_t */
49 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
50 #if _MSC_VER <= 1200 || defined __BORLANDC__ /* @@@ [2G limit] */
55 #include "FLAC/assert.h"
56 #include "FLAC/stream_decoder.h"
57 #include "protected/stream_encoder.h"
58 #include "private/bitbuffer.h"
59 #include "private/bitmath.h"
60 #include "private/crc.h"
61 #include "private/cpu.h"
62 #include "private/fixed.h"
63 #include "private/format.h"
64 #include "private/lpc.h"
65 #include "private/md5.h"
66 #include "private/memory.h"
68 #include "private/ogg_helper.h"
69 #include "private/ogg_mapping.h"
71 #include "private/stream_encoder_framing.h"
72 #include "private/window.h"
77 #define min(x,y) ((x)<(y)?(x):(y))
82 #define max(x,y) ((x)>(y)?(x):(y))
85 FLAC__int32 *data[FLAC__MAX_CHANNELS];
86 unsigned size; /* of each data[] in samples */
91 const FLAC__byte *data;
98 ENCODER_IN_METADATA = 1,
102 static struct CompressionLevels {
103 FLAC__bool do_mid_side_stereo;
104 FLAC__bool loose_mid_side_stereo;
105 unsigned max_lpc_order;
106 unsigned qlp_coeff_precision;
107 FLAC__bool do_qlp_coeff_prec_search;
108 FLAC__bool do_escape_coding;
109 FLAC__bool do_exhaustive_model_search;
110 unsigned min_residual_partition_order;
111 unsigned max_residual_partition_order;
112 unsigned rice_parameter_search_dist;
113 } compression_levels_[] = {
114 { false, false, 0, 0, false, false, false, 2, 2, 0 },
115 { true , true , 0, 0, false, false, false, 2, 2, 0 },
116 { true , false, 0, 0, false, false, false, 0, 3, 0 },
117 { false, false, 6, 0, false, false, false, 3, 3, 0 },
118 { true , true , 8, 0, false, false, false, 3, 3, 0 },
119 { true , false, 8, 0, false, false, false, 3, 3, 0 },
120 { true , false, 8, 0, false, false, false, 0, 4, 0 },
121 { true , false, 8, 0, false, false, true , 0, 6, 0 },
122 { true , false, 12, 0, false, false, true , 0, 6, 0 }
126 /***********************************************************************
128 * Private class method prototypes
130 ***********************************************************************/
132 static void set_defaults_(FLAC__StreamEncoder *encoder);
133 static void free_(FLAC__StreamEncoder *encoder);
134 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
135 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
136 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
137 static void update_metadata_(const FLAC__StreamEncoder *encoder);
139 static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
141 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
142 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
144 static FLAC__bool process_subframe_(
145 FLAC__StreamEncoder *encoder,
146 unsigned min_partition_order,
147 unsigned max_partition_order,
148 FLAC__bool precompute_partition_sums,
149 const FLAC__FrameHeader *frame_header,
150 unsigned subframe_bps,
151 const FLAC__int32 integer_signal[],
152 #ifndef FLAC__INTEGER_ONLY_LIBRARY
153 const FLAC__real real_signal[],
155 FLAC__Subframe *subframe[2],
156 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
157 FLAC__int32 *residual[2],
158 unsigned *best_subframe,
162 static FLAC__bool add_subframe_(
163 FLAC__StreamEncoder *encoder,
164 const FLAC__FrameHeader *frame_header,
165 unsigned subframe_bps,
166 const FLAC__Subframe *subframe,
167 FLAC__BitBuffer *frame
170 static unsigned evaluate_constant_subframe_(
171 const FLAC__int32 signal,
172 unsigned subframe_bps,
173 FLAC__Subframe *subframe
176 static unsigned evaluate_fixed_subframe_(
177 FLAC__StreamEncoder *encoder,
178 const FLAC__int32 signal[],
179 FLAC__int32 residual[],
180 FLAC__uint32 abs_residual[],
181 FLAC__uint64 abs_residual_partition_sums[],
182 unsigned raw_bits_per_partition[],
184 unsigned subframe_bps,
186 unsigned rice_parameter,
187 unsigned min_partition_order,
188 unsigned max_partition_order,
189 FLAC__bool precompute_partition_sums,
190 FLAC__bool do_escape_coding,
191 unsigned rice_parameter_search_dist,
192 FLAC__Subframe *subframe,
193 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
196 #ifndef FLAC__INTEGER_ONLY_LIBRARY
197 static unsigned evaluate_lpc_subframe_(
198 FLAC__StreamEncoder *encoder,
199 const FLAC__int32 signal[],
200 FLAC__int32 residual[],
201 FLAC__uint32 abs_residual[],
202 FLAC__uint64 abs_residual_partition_sums[],
203 unsigned raw_bits_per_partition[],
204 const FLAC__real lp_coeff[],
206 unsigned subframe_bps,
208 unsigned qlp_coeff_precision,
209 unsigned rice_parameter,
210 unsigned min_partition_order,
211 unsigned max_partition_order,
212 FLAC__bool precompute_partition_sums,
213 FLAC__bool do_escape_coding,
214 unsigned rice_parameter_search_dist,
215 FLAC__Subframe *subframe,
216 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
220 static unsigned evaluate_verbatim_subframe_(
221 const FLAC__int32 signal[],
223 unsigned subframe_bps,
224 FLAC__Subframe *subframe
227 static unsigned find_best_partition_order_(
228 struct FLAC__StreamEncoderPrivate *private_,
229 const FLAC__int32 residual[],
230 FLAC__uint32 abs_residual[],
231 FLAC__uint64 abs_residual_partition_sums[],
232 unsigned raw_bits_per_partition[],
233 unsigned residual_samples,
234 unsigned predictor_order,
235 unsigned rice_parameter,
236 unsigned min_partition_order,
237 unsigned max_partition_order,
238 FLAC__bool precompute_partition_sums,
239 FLAC__bool do_escape_coding,
240 unsigned rice_parameter_search_dist,
241 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
244 static void precompute_partition_info_sums_(
245 const FLAC__uint32 abs_residual[],
246 FLAC__uint64 abs_residual_partition_sums[],
247 unsigned residual_samples,
248 unsigned predictor_order,
249 unsigned min_partition_order,
250 unsigned max_partition_order
253 static void precompute_partition_info_escapes_(
254 const FLAC__int32 residual[],
255 unsigned raw_bits_per_partition[],
256 unsigned residual_samples,
257 unsigned predictor_order,
258 unsigned min_partition_order,
259 unsigned max_partition_order
262 #ifdef DONT_ESTIMATE_RICE_BITS
263 static FLAC__bool set_partitioned_rice_(
264 const FLAC__uint32 abs_residual[],
265 const FLAC__int32 residual[],
266 const unsigned residual_samples,
267 const unsigned predictor_order,
268 const unsigned suggested_rice_parameter,
269 const unsigned rice_parameter_search_dist,
270 const unsigned partition_order,
271 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
275 static FLAC__bool set_partitioned_rice_with_precompute_(
276 const FLAC__int32 residual[],
277 const FLAC__uint64 abs_residual_partition_sums[],
278 const unsigned raw_bits_per_partition[],
279 const unsigned residual_samples,
280 const unsigned predictor_order,
281 const unsigned suggested_rice_parameter,
282 const unsigned rice_parameter_search_dist,
283 const unsigned partition_order,
284 const FLAC__bool search_for_escapes,
285 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
289 static FLAC__bool set_partitioned_rice_(
290 const FLAC__uint32 abs_residual[],
291 const unsigned residual_samples,
292 const unsigned predictor_order,
293 const unsigned suggested_rice_parameter,
294 const unsigned rice_parameter_search_dist,
295 const unsigned partition_order,
296 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
300 static FLAC__bool set_partitioned_rice_with_precompute_(
301 const FLAC__uint32 abs_residual[],
302 const FLAC__uint64 abs_residual_partition_sums[],
303 const unsigned raw_bits_per_partition[],
304 const unsigned residual_samples,
305 const unsigned predictor_order,
306 const unsigned suggested_rice_parameter,
307 const unsigned rice_parameter_search_dist,
308 const unsigned partition_order,
309 const FLAC__bool search_for_escapes,
310 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
315 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
317 /* verify-related routines: */
318 static void append_to_verify_fifo_(
319 verify_input_fifo *fifo,
320 const FLAC__int32 * const input[],
321 unsigned input_offset,
323 unsigned wide_samples
326 static void append_to_verify_fifo_interleaved_(
327 verify_input_fifo *fifo,
328 const FLAC__int32 input[],
329 unsigned input_offset,
331 unsigned wide_samples
334 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
335 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
336 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
337 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
339 static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
340 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
341 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
342 static FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data);
343 static FILE *get_binary_stdout_();
346 /***********************************************************************
350 ***********************************************************************/
352 typedef struct FLAC__StreamEncoderPrivate {
353 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
354 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
355 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
356 #ifndef FLAC__INTEGER_ONLY_LIBRARY
357 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* the floating-point version of the input signal */
358 FLAC__real *real_signal_mid_side[2]; /* the floating-point version of the mid-side input signal (stereo only) */
359 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
360 FLAC__real *windowed_signal; /* the real_signal[] * current window[] */
362 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
363 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
364 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
365 FLAC__int32 *residual_workspace_mid_side[2][2];
366 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
367 FLAC__Subframe subframe_workspace_mid_side[2][2];
368 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
369 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
370 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
371 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
372 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
373 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
374 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index into the above workspaces */
375 unsigned best_subframe_mid_side[2];
376 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
377 unsigned best_subframe_bits_mid_side[2];
378 FLAC__uint32 *abs_residual; /* workspace where abs(candidate residual) is stored */
379 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
380 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
381 FLAC__BitBuffer *frame; /* the current frame being worked on */
382 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
383 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
384 FLAC__ChannelAssignment last_channel_assignment;
385 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
386 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
387 unsigned current_sample_number;
388 unsigned current_frame_number;
389 struct FLAC__MD5Context md5context;
390 FLAC__CPUInfo cpuinfo;
391 #ifndef FLAC__INTEGER_ONLY_LIBRARY
392 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
394 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
396 #ifndef FLAC__INTEGER_ONLY_LIBRARY
397 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
398 void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
399 void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
400 void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
402 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
403 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
404 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
405 FLAC__bool precompute_partition_sums; /* our initial guess as to whether precomputing the partitions sums will be a speed improvement */
406 FLAC__bool disable_constant_subframes;
407 FLAC__bool disable_fixed_subframes;
408 FLAC__bool disable_verbatim_subframes;
412 FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
413 FLAC__StreamEncoderSeekCallback seek_callback;
414 FLAC__StreamEncoderTellCallback tell_callback;
415 FLAC__StreamEncoderWriteCallback write_callback;
416 FLAC__StreamEncoderMetadataCallback metadata_callback;
417 FLAC__StreamEncoderProgressCallback progress_callback;
419 unsigned first_seekpoint_to_check;
420 FILE *file; /* only used when encoding to a file */
421 FLAC__uint64 bytes_written;
422 FLAC__uint64 samples_written;
423 unsigned frames_written;
424 unsigned total_frames_estimate;
425 /* unaligned (original) pointers to allocated data */
426 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
427 FLAC__int32 *integer_signal_mid_side_unaligned[2];
428 #ifndef FLAC__INTEGER_ONLY_LIBRARY
429 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS];
430 FLAC__real *real_signal_mid_side_unaligned[2];
431 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
432 FLAC__real *windowed_signal_unaligned;
434 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
435 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
436 FLAC__uint32 *abs_residual_unaligned;
437 FLAC__uint64 *abs_residual_partition_sums_unaligned;
438 unsigned *raw_bits_per_partition_unaligned;
440 * These fields have been moved here from private function local
441 * declarations merely to save stack space during encoding.
443 #ifndef FLAC__INTEGER_ONLY_LIBRARY
444 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
446 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
448 * The data for the verify section
451 FLAC__StreamDecoder *decoder;
452 EncoderStateHint state_hint;
453 FLAC__bool needs_magic_hack;
454 verify_input_fifo input_fifo;
455 verify_output output;
457 FLAC__uint64 absolute_sample;
458 unsigned frame_number;
461 FLAC__int32 expected;
465 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
466 } FLAC__StreamEncoderPrivate;
468 /***********************************************************************
470 * Public static class data
472 ***********************************************************************/
474 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
475 "FLAC__STREAM_ENCODER_OK",
476 "FLAC__STREAM_ENCODER_UNINITIALIZED",
477 "FLAC__STREAM_ENCODER_OGG_ERROR",
478 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
479 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
480 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
481 "FLAC__STREAM_ENCODER_IO_ERROR",
482 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
483 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
486 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
487 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
488 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
489 "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
490 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
491 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
492 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
493 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
494 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
495 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
496 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
497 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
498 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
499 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
500 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
503 FLAC_API const char * const FLAC__treamEncoderReadStatusString[] = {
504 "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
505 "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
506 "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
507 "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
510 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
511 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
512 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
515 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
516 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
517 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
518 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
521 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
522 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
523 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
524 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
527 /* Number of samples that will be overread to watch for end of stream. By
528 * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
529 * always try to read blocksize+1 samples before encoding a block, so that
530 * even if the stream has a total sample count that is an integral multiple
531 * of the blocksize, we will still notice when we are encoding the last
532 * block. This is needed, for example, to correctly set the end-of-stream
533 * marker in Ogg FLAC.
535 * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
536 * not really any reason to change it.
538 static const unsigned OVERREAD_ = 1;
540 /***********************************************************************
542 * Class constructor/destructor
545 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new()
547 FLAC__StreamEncoder *encoder;
550 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
552 encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
557 encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
558 if(encoder->protected_ == 0) {
563 encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
564 if(encoder->private_ == 0) {
565 free(encoder->protected_);
570 encoder->private_->frame = FLAC__bitbuffer_new();
571 if(encoder->private_->frame == 0) {
572 free(encoder->private_);
573 free(encoder->protected_);
578 encoder->private_->file = 0;
580 set_defaults_(encoder);
582 encoder->private_->is_being_deleted = false;
584 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
585 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
586 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
588 for(i = 0; i < 2; i++) {
589 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
590 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
592 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
593 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
594 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
596 for(i = 0; i < 2; i++) {
597 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
598 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
601 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
602 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
603 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
605 for(i = 0; i < 2; i++) {
606 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
607 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
609 for(i = 0; i < 2; i++)
610 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
612 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
617 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
621 FLAC__ASSERT(0 != encoder);
622 FLAC__ASSERT(0 != encoder->protected_);
623 FLAC__ASSERT(0 != encoder->private_);
624 FLAC__ASSERT(0 != encoder->private_->frame);
626 encoder->private_->is_being_deleted = true;
628 (void)FLAC__stream_encoder_finish(encoder);
630 if(0 != encoder->private_->verify.decoder)
631 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
633 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
634 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
635 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
637 for(i = 0; i < 2; i++) {
638 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
639 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
641 for(i = 0; i < 2; i++)
642 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
644 FLAC__bitbuffer_delete(encoder->private_->frame);
645 free(encoder->private_);
646 free(encoder->protected_);
650 /***********************************************************************
652 * Public class methods
654 ***********************************************************************/
656 static FLAC__StreamEncoderInitStatus init_stream_internal_(
657 FLAC__StreamEncoder *encoder,
658 FLAC__StreamEncoderReadCallback read_callback,
659 FLAC__StreamEncoderWriteCallback write_callback,
660 FLAC__StreamEncoderSeekCallback seek_callback,
661 FLAC__StreamEncoderTellCallback tell_callback,
662 FLAC__StreamEncoderMetadataCallback metadata_callback,
668 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
670 FLAC__ASSERT(0 != encoder);
672 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
673 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
677 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
680 if(0 == write_callback || (seek_callback && 0 == tell_callback))
681 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
683 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
684 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
686 if(encoder->protected_->channels != 2) {
687 encoder->protected_->do_mid_side_stereo = false;
688 encoder->protected_->loose_mid_side_stereo = false;
690 else if(!encoder->protected_->do_mid_side_stereo)
691 encoder->protected_->loose_mid_side_stereo = false;
693 if(encoder->protected_->bits_per_sample >= 32)
694 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
696 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
697 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
699 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
700 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
702 if(encoder->protected_->blocksize == 0) {
703 if(encoder->protected_->max_lpc_order == 0)
704 encoder->protected_->blocksize = 1152;
706 encoder->protected_->blocksize = 4608;
709 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
710 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
712 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
713 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
715 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
716 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
718 if(encoder->protected_->qlp_coeff_precision == 0) {
719 if(encoder->protected_->bits_per_sample < 16) {
720 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
721 /* @@@ until then we'll make a guess */
722 encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
724 else if(encoder->protected_->bits_per_sample == 16) {
725 if(encoder->protected_->blocksize <= 192)
726 encoder->protected_->qlp_coeff_precision = 7;
727 else if(encoder->protected_->blocksize <= 384)
728 encoder->protected_->qlp_coeff_precision = 8;
729 else if(encoder->protected_->blocksize <= 576)
730 encoder->protected_->qlp_coeff_precision = 9;
731 else if(encoder->protected_->blocksize <= 1152)
732 encoder->protected_->qlp_coeff_precision = 10;
733 else if(encoder->protected_->blocksize <= 2304)
734 encoder->protected_->qlp_coeff_precision = 11;
735 else if(encoder->protected_->blocksize <= 4608)
736 encoder->protected_->qlp_coeff_precision = 12;
738 encoder->protected_->qlp_coeff_precision = 13;
741 if(encoder->protected_->blocksize <= 384)
742 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
743 else if(encoder->protected_->blocksize <= 1152)
744 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
746 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
748 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
750 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
751 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
753 if(encoder->protected_->streamable_subset) {
755 encoder->protected_->blocksize != 192 &&
756 encoder->protected_->blocksize != 576 &&
757 encoder->protected_->blocksize != 1152 &&
758 encoder->protected_->blocksize != 2304 &&
759 encoder->protected_->blocksize != 4608 &&
760 encoder->protected_->blocksize != 256 &&
761 encoder->protected_->blocksize != 512 &&
762 encoder->protected_->blocksize != 1024 &&
763 encoder->protected_->blocksize != 2048 &&
764 encoder->protected_->blocksize != 4096 &&
765 encoder->protected_->blocksize != 8192 &&
766 encoder->protected_->blocksize != 16384
768 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
770 encoder->protected_->sample_rate != 8000 &&
771 encoder->protected_->sample_rate != 16000 &&
772 encoder->protected_->sample_rate != 22050 &&
773 encoder->protected_->sample_rate != 24000 &&
774 encoder->protected_->sample_rate != 32000 &&
775 encoder->protected_->sample_rate != 44100 &&
776 encoder->protected_->sample_rate != 48000 &&
777 encoder->protected_->sample_rate != 96000
779 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
781 encoder->protected_->bits_per_sample != 8 &&
782 encoder->protected_->bits_per_sample != 12 &&
783 encoder->protected_->bits_per_sample != 16 &&
784 encoder->protected_->bits_per_sample != 20 &&
785 encoder->protected_->bits_per_sample != 24
787 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
788 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
789 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
791 encoder->protected_->sample_rate <= 48000 &&
793 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
794 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
797 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
801 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
802 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
803 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
804 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
807 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
808 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
810 for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
811 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
812 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
814 encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
815 encoder->protected_->metadata[0] = vc;
821 /* keep track of any SEEKTABLE block */
822 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
824 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
825 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
826 encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
827 break; /* take only the first one */
832 /* validate metadata */
833 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
834 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
835 metadata_has_seektable = false;
836 metadata_has_vorbis_comment = false;
837 metadata_picture_has_type1 = false;
838 metadata_picture_has_type2 = false;
839 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
840 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
841 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
842 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
843 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
844 if(metadata_has_seektable) /* only one is allowed */
845 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
846 metadata_has_seektable = true;
847 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
848 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
850 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
851 if(metadata_has_vorbis_comment) /* only one is allowed */
852 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
853 metadata_has_vorbis_comment = true;
855 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
856 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
857 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
859 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
860 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
861 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
862 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
863 if(metadata_picture_has_type1) /* there should only be 1 per stream */
864 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
865 metadata_picture_has_type1 = true;
866 /* standard icon must be 32x32 pixel PNG */
868 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
870 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
871 m->data.picture.width != 32 ||
872 m->data.picture.height != 32
875 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
877 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
878 if(metadata_picture_has_type2) /* there should only be 1 per stream */
879 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
880 metadata_picture_has_type2 = true;
885 encoder->private_->input_capacity = 0;
886 for(i = 0; i < encoder->protected_->channels; i++) {
887 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
888 #ifndef FLAC__INTEGER_ONLY_LIBRARY
889 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
892 for(i = 0; i < 2; i++) {
893 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
894 #ifndef FLAC__INTEGER_ONLY_LIBRARY
895 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
898 #ifndef FLAC__INTEGER_ONLY_LIBRARY
899 for(i = 0; i < encoder->protected_->num_apodizations; i++)
900 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
901 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
903 for(i = 0; i < encoder->protected_->channels; i++) {
904 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
905 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
906 encoder->private_->best_subframe[i] = 0;
908 for(i = 0; i < 2; i++) {
909 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
910 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
911 encoder->private_->best_subframe_mid_side[i] = 0;
913 encoder->private_->abs_residual_unaligned = encoder->private_->abs_residual = 0;
914 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
915 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
916 #ifndef FLAC__INTEGER_ONLY_LIBRARY
917 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
919 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
920 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
921 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
922 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
923 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
924 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
925 encoder->private_->loose_mid_side_stereo_frames = (unsigned)FLAC__fixedpoint_trunc((((FLAC__uint64)(encoder->protected_->sample_rate) * (FLAC__uint64)(26214)) << 16) / (encoder->protected_->blocksize<<16) + FLAC__FP_ONE_HALF);
927 if(encoder->private_->loose_mid_side_stereo_frames == 0)
928 encoder->private_->loose_mid_side_stereo_frames = 1;
929 encoder->private_->loose_mid_side_stereo_frame_count = 0;
930 encoder->private_->current_sample_number = 0;
931 encoder->private_->current_frame_number = 0;
933 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
934 encoder->private_->use_wide_by_order = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(max(encoder->protected_->max_lpc_order, FLAC__MAX_FIXED_ORDER))+1 > 30); /*@@@ need to use this? */
935 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
938 * get the CPU info and set the function pointers
940 FLAC__cpu_info(&encoder->private_->cpuinfo);
941 /* first default to the non-asm routines */
942 #ifndef FLAC__INTEGER_ONLY_LIBRARY
943 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
945 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
946 #ifndef FLAC__INTEGER_ONLY_LIBRARY
947 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
948 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
949 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
951 /* now override with asm where appropriate */
952 #ifndef FLAC__INTEGER_ONLY_LIBRARY
953 # ifndef FLAC__NO_ASM
954 if(encoder->private_->cpuinfo.use_asm) {
955 # ifdef FLAC__CPU_IA32
956 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
957 # ifdef FLAC__HAS_NASM
959 if(encoder->private_->cpuinfo.data.ia32.sse) {
960 if(encoder->protected_->max_lpc_order < 4)
961 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
962 else if(encoder->protected_->max_lpc_order < 8)
963 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
964 else if(encoder->protected_->max_lpc_order < 12)
965 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
967 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
970 # endif /* FLAC__SSE_OS */
971 if(encoder->private_->cpuinfo.data.ia32._3dnow)
972 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
974 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
975 if(encoder->private_->cpuinfo.data.ia32.mmx) {
976 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
977 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
980 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
981 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
983 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
984 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
985 # endif /* FLAC__HAS_NASM */
986 # endif /* FLAC__CPU_IA32 */
988 # endif /* !FLAC__NO_ASM */
989 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
990 /* finally override based on wide-ness if necessary */
991 if(encoder->private_->use_wide_by_block) {
992 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
995 /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */
996 encoder->private_->precompute_partition_sums = (encoder->protected_->max_residual_partition_order > encoder->protected_->min_residual_partition_order) || encoder->protected_->do_escape_coding;
998 /* set state to OK; from here on, errors are fatal and we'll override the state then */
999 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
1002 encoder->private_->is_ogg = is_ogg;
1003 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
1004 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
1005 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1009 encoder->private_->read_callback = read_callback;
1010 encoder->private_->write_callback = write_callback;
1011 encoder->private_->seek_callback = seek_callback;
1012 encoder->private_->tell_callback = tell_callback;
1013 encoder->private_->metadata_callback = metadata_callback;
1014 encoder->private_->client_data = client_data;
1016 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
1017 /* the above function sets the state for us in case of an error */
1018 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1021 if(!FLAC__bitbuffer_init(encoder->private_->frame)) {
1022 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1023 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1027 * Set up the verify stuff if necessary
1029 if(encoder->protected_->verify) {
1031 * First, set up the fifo which will hold the
1032 * original signal to compare against
1034 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
1035 for(i = 0; i < encoder->protected_->channels; i++) {
1036 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size))) {
1037 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1038 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1041 encoder->private_->verify.input_fifo.tail = 0;
1044 * Now set up a stream decoder for verification
1046 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
1047 if(0 == encoder->private_->verify.decoder) {
1048 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1049 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1052 if(FLAC__stream_decoder_init_stream(encoder->private_->verify.decoder, verify_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, verify_write_callback_, verify_metadata_callback_, verify_error_callback_, /*client_data=*/encoder) != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
1053 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1054 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1057 encoder->private_->verify.error_stats.absolute_sample = 0;
1058 encoder->private_->verify.error_stats.frame_number = 0;
1059 encoder->private_->verify.error_stats.channel = 0;
1060 encoder->private_->verify.error_stats.sample = 0;
1061 encoder->private_->verify.error_stats.expected = 0;
1062 encoder->private_->verify.error_stats.got = 0;
1065 * These must be done before we write any metadata, because that
1066 * calls the write_callback, which uses these values.
1068 encoder->private_->first_seekpoint_to_check = 0;
1069 encoder->private_->samples_written = 0;
1070 encoder->protected_->streaminfo_offset = 0;
1071 encoder->protected_->seektable_offset = 0;
1072 encoder->protected_->audio_offset = 0;
1075 * write the stream header
1077 if(encoder->protected_->verify)
1078 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1079 if(!FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1080 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1081 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1083 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1084 /* the above function sets the state for us in case of an error */
1085 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1089 * write the STREAMINFO metadata block
1091 if(encoder->protected_->verify)
1092 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1093 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1094 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1095 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1096 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1097 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1098 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1099 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1100 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1101 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1102 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1103 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1104 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1105 FLAC__MD5Init(&encoder->private_->md5context);
1106 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1107 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1108 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1110 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1111 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1112 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1114 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1115 /* the above function sets the state for us in case of an error */
1116 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1120 * Now that the STREAMINFO block is written, we can init this to an
1121 * absurdly-high value...
1123 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1124 /* ... and clear this to 0 */
1125 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1128 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1129 * if not, we will write an empty one (FLAC__add_metadata_block()
1130 * automatically supplies the vendor string).
1132 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1133 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1134 * true it will have already insured that the metadata list is properly
1137 if(!metadata_has_vorbis_comment) {
1138 FLAC__StreamMetadata vorbis_comment;
1139 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1140 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1141 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1142 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1143 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1144 vorbis_comment.data.vorbis_comment.num_comments = 0;
1145 vorbis_comment.data.vorbis_comment.comments = 0;
1146 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1147 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1148 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1150 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1151 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1152 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1154 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1155 /* the above function sets the state for us in case of an error */
1156 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1161 * write the user's metadata blocks
1163 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1164 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1165 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1166 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1167 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1169 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1170 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1171 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1173 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1174 /* the above function sets the state for us in case of an error */
1175 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1179 /* now that all the metadata is written, we save the stream offset */
1180 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &encoder->protected_->audio_offset, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) { /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
1181 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1182 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1185 if(encoder->protected_->verify)
1186 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1188 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1191 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1192 FLAC__StreamEncoder *encoder,
1193 FLAC__StreamEncoderWriteCallback write_callback,
1194 FLAC__StreamEncoderSeekCallback seek_callback,
1195 FLAC__StreamEncoderTellCallback tell_callback,
1196 FLAC__StreamEncoderMetadataCallback metadata_callback,
1200 return init_stream_internal_(
1202 /*read_callback=*/0,
1212 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1213 FLAC__StreamEncoder *encoder,
1214 FLAC__StreamEncoderReadCallback read_callback,
1215 FLAC__StreamEncoderWriteCallback write_callback,
1216 FLAC__StreamEncoderSeekCallback seek_callback,
1217 FLAC__StreamEncoderTellCallback tell_callback,
1218 FLAC__StreamEncoderMetadataCallback metadata_callback,
1222 return init_stream_internal_(
1234 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1235 FLAC__StreamEncoder *encoder,
1237 FLAC__StreamEncoderProgressCallback progress_callback,
1242 FLAC__StreamEncoderInitStatus init_status;
1244 FLAC__ASSERT(0 != encoder);
1245 FLAC__ASSERT(0 != file);
1247 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1248 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1250 /* double protection */
1252 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1253 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1257 * To make sure that our file does not go unclosed after an error, we
1258 * must assign the FILE pointer before any further error can occur in
1262 file = get_binary_stdout_(); /* just to be safe */
1264 encoder->private_->file = file;
1266 encoder->private_->progress_callback = progress_callback;
1267 encoder->private_->bytes_written = 0;
1268 encoder->private_->samples_written = 0;
1269 encoder->private_->frames_written = 0;
1271 init_status = init_stream_internal_(
1273 encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
1274 file_write_callback_,
1275 encoder->private_->file == stdout? 0 : file_seek_callback_,
1276 encoder->private_->file == stdout? 0 : file_tell_callback_,
1277 /*metadata_callback=*/0,
1281 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1282 /* the above function sets the state for us in case of an error */
1287 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1289 FLAC__ASSERT(blocksize != 0);
1290 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1296 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1297 FLAC__StreamEncoder *encoder,
1299 FLAC__StreamEncoderProgressCallback progress_callback,
1303 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1306 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1307 FLAC__StreamEncoder *encoder,
1309 FLAC__StreamEncoderProgressCallback progress_callback,
1313 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1316 static FLAC__StreamEncoderInitStatus init_file_internal_(
1317 FLAC__StreamEncoder *encoder,
1318 const char *filename,
1319 FLAC__StreamEncoderProgressCallback progress_callback,
1326 FLAC__ASSERT(0 != encoder);
1329 * To make sure that our file does not go unclosed after an error, we
1330 * have to do the same entrance checks here that are later performed
1331 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1333 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1334 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1336 file = filename? fopen(filename, "w+b") : stdout;
1339 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1340 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1343 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1346 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
1347 FLAC__StreamEncoder *encoder,
1348 const char *filename,
1349 FLAC__StreamEncoderProgressCallback progress_callback,
1353 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
1356 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1357 FLAC__StreamEncoder *encoder,
1358 const char *filename,
1359 FLAC__StreamEncoderProgressCallback progress_callback,
1363 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1366 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1368 FLAC__bool error = false;
1370 FLAC__ASSERT(0 != encoder);
1371 FLAC__ASSERT(0 != encoder->private_);
1372 FLAC__ASSERT(0 != encoder->protected_);
1374 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1377 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1378 if(encoder->private_->current_sample_number != 0) {
1379 const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
1380 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1381 if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
1386 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1388 if(!encoder->private_->is_being_deleted) {
1389 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
1390 if(encoder->private_->seek_callback) {
1392 if(encoder->private_->is_ogg)
1393 update_ogg_metadata_(encoder);
1396 update_metadata_(encoder);
1398 /* check if an error occurred while updating metadata */
1399 if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
1402 if(encoder->private_->metadata_callback)
1403 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1406 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
1408 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1413 if(0 != encoder->private_->file) {
1414 if(encoder->private_->file != stdout)
1415 fclose(encoder->private_->file);
1416 encoder->private_->file = 0;
1420 if(encoder->private_->is_ogg)
1421 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1425 set_defaults_(encoder);
1428 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1433 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1435 FLAC__ASSERT(0 != encoder);
1436 FLAC__ASSERT(0 != encoder->private_);
1437 FLAC__ASSERT(0 != encoder->protected_);
1438 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1441 /* can't check encoder->private_->is_ogg since that's not set until init time */
1442 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1450 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1452 FLAC__ASSERT(0 != encoder);
1453 FLAC__ASSERT(0 != encoder->private_);
1454 FLAC__ASSERT(0 != encoder->protected_);
1455 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1457 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1458 encoder->protected_->verify = value;
1463 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1465 FLAC__ASSERT(0 != encoder);
1466 FLAC__ASSERT(0 != encoder->private_);
1467 FLAC__ASSERT(0 != encoder->protected_);
1468 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1470 encoder->protected_->streamable_subset = value;
1474 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1476 FLAC__ASSERT(0 != encoder);
1477 FLAC__ASSERT(0 != encoder->private_);
1478 FLAC__ASSERT(0 != encoder->protected_);
1479 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1481 encoder->protected_->channels = value;
1485 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1487 FLAC__ASSERT(0 != encoder);
1488 FLAC__ASSERT(0 != encoder->private_);
1489 FLAC__ASSERT(0 != encoder->protected_);
1490 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1492 encoder->protected_->bits_per_sample = value;
1496 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1498 FLAC__ASSERT(0 != encoder);
1499 FLAC__ASSERT(0 != encoder->private_);
1500 FLAC__ASSERT(0 != encoder->protected_);
1501 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1503 encoder->protected_->sample_rate = value;
1507 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1509 FLAC__bool ok = true;
1510 FLAC__ASSERT(0 != encoder);
1511 FLAC__ASSERT(0 != encoder->private_);
1512 FLAC__ASSERT(0 != encoder->protected_);
1513 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1515 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1516 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1517 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1518 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1521 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1522 /* but it's too hard to specify the string in a locale-specific way */
1524 encoder->protected_->num_apodizations = 1;
1525 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1526 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1528 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1529 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1530 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1531 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1532 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1533 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1534 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1535 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1539 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1541 FLAC__ASSERT(0 != encoder);
1542 FLAC__ASSERT(0 != encoder->private_);
1543 FLAC__ASSERT(0 != encoder->protected_);
1544 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1546 encoder->protected_->blocksize = value;
1550 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1552 FLAC__ASSERT(0 != encoder);
1553 FLAC__ASSERT(0 != encoder->private_);
1554 FLAC__ASSERT(0 != encoder->protected_);
1555 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1557 encoder->protected_->do_mid_side_stereo = value;
1561 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1563 FLAC__ASSERT(0 != encoder);
1564 FLAC__ASSERT(0 != encoder->private_);
1565 FLAC__ASSERT(0 != encoder->protected_);
1566 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1568 encoder->protected_->loose_mid_side_stereo = value;
1572 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1574 FLAC__ASSERT(0 != encoder);
1575 FLAC__ASSERT(0 != encoder->private_);
1576 FLAC__ASSERT(0 != encoder->protected_);
1577 FLAC__ASSERT(0 != specification);
1578 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1580 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1581 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1583 encoder->protected_->num_apodizations = 0;
1585 const char *s = strchr(specification, ';');
1586 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1587 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1588 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1589 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1590 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1591 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1592 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1593 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1594 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1595 else if(n==6 && 0 == strncmp("connes" , specification, n))
1596 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1597 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1598 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1599 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1600 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1601 if (stddev > 0.0 && stddev <= 0.5) {
1602 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1603 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1606 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1607 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1608 else if(n==4 && 0 == strncmp("hann" , specification, n))
1609 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1610 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1611 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1612 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1613 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1614 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1615 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1616 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1617 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1618 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1619 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1620 if (p >= 0.0 && p <= 1.0) {
1621 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1622 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1625 else if(n==5 && 0 == strncmp("welch" , specification, n))
1626 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1627 if (encoder->protected_->num_apodizations == 32)
1630 specification = s+1;
1634 if(encoder->protected_->num_apodizations == 0) {
1635 encoder->protected_->num_apodizations = 1;
1636 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1637 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1643 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1645 FLAC__ASSERT(0 != encoder);
1646 FLAC__ASSERT(0 != encoder->private_);
1647 FLAC__ASSERT(0 != encoder->protected_);
1648 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1650 encoder->protected_->max_lpc_order = value;
1654 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1656 FLAC__ASSERT(0 != encoder);
1657 FLAC__ASSERT(0 != encoder->private_);
1658 FLAC__ASSERT(0 != encoder->protected_);
1659 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1661 encoder->protected_->qlp_coeff_precision = value;
1665 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1667 FLAC__ASSERT(0 != encoder);
1668 FLAC__ASSERT(0 != encoder->private_);
1669 FLAC__ASSERT(0 != encoder->protected_);
1670 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1672 encoder->protected_->do_qlp_coeff_prec_search = value;
1676 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1678 FLAC__ASSERT(0 != encoder);
1679 FLAC__ASSERT(0 != encoder->private_);
1680 FLAC__ASSERT(0 != encoder->protected_);
1681 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1684 /*@@@ deprecated: */
1685 encoder->protected_->do_escape_coding = value;
1692 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1694 FLAC__ASSERT(0 != encoder);
1695 FLAC__ASSERT(0 != encoder->private_);
1696 FLAC__ASSERT(0 != encoder->protected_);
1697 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1699 encoder->protected_->do_exhaustive_model_search = value;
1703 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1705 FLAC__ASSERT(0 != encoder);
1706 FLAC__ASSERT(0 != encoder->private_);
1707 FLAC__ASSERT(0 != encoder->protected_);
1708 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1710 encoder->protected_->min_residual_partition_order = value;
1714 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1716 FLAC__ASSERT(0 != encoder);
1717 FLAC__ASSERT(0 != encoder->private_);
1718 FLAC__ASSERT(0 != encoder->protected_);
1719 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1721 encoder->protected_->max_residual_partition_order = value;
1725 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1727 FLAC__ASSERT(0 != encoder);
1728 FLAC__ASSERT(0 != encoder->private_);
1729 FLAC__ASSERT(0 != encoder->protected_);
1730 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1733 /*@@@ deprecated: */
1734 encoder->protected_->rice_parameter_search_dist = value;
1741 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1743 FLAC__ASSERT(0 != encoder);
1744 FLAC__ASSERT(0 != encoder->private_);
1745 FLAC__ASSERT(0 != encoder->protected_);
1746 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1748 encoder->protected_->total_samples_estimate = value;
1752 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1754 FLAC__ASSERT(0 != encoder);
1755 FLAC__ASSERT(0 != encoder->private_);
1756 FLAC__ASSERT(0 != encoder->protected_);
1757 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1759 encoder->protected_->metadata = metadata;
1760 encoder->protected_->num_metadata_blocks = num_blocks;
1762 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1769 * These three functions are not static, but not publically exposed in
1770 * include/FLAC/ either. They are used by the test suite.
1772 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1774 FLAC__ASSERT(0 != encoder);
1775 FLAC__ASSERT(0 != encoder->private_);
1776 FLAC__ASSERT(0 != encoder->protected_);
1777 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1779 encoder->private_->disable_constant_subframes = value;
1783 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1785 FLAC__ASSERT(0 != encoder);
1786 FLAC__ASSERT(0 != encoder->private_);
1787 FLAC__ASSERT(0 != encoder->protected_);
1788 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1790 encoder->private_->disable_fixed_subframes = value;
1794 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1796 FLAC__ASSERT(0 != encoder);
1797 FLAC__ASSERT(0 != encoder->private_);
1798 FLAC__ASSERT(0 != encoder->protected_);
1799 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1801 encoder->private_->disable_verbatim_subframes = value;
1805 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1807 FLAC__ASSERT(0 != encoder);
1808 FLAC__ASSERT(0 != encoder->private_);
1809 FLAC__ASSERT(0 != encoder->protected_);
1810 return encoder->protected_->state;
1813 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1815 FLAC__ASSERT(0 != encoder);
1816 FLAC__ASSERT(0 != encoder->private_);
1817 FLAC__ASSERT(0 != encoder->protected_);
1818 if(encoder->protected_->verify)
1819 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1821 return FLAC__STREAM_DECODER_UNINITIALIZED;
1824 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1826 FLAC__ASSERT(0 != encoder);
1827 FLAC__ASSERT(0 != encoder->private_);
1828 FLAC__ASSERT(0 != encoder->protected_);
1829 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1830 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1832 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1835 FLAC_API void FLAC__stream_encoder_get_verify_decoder_error_stats(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_sample, unsigned *frame_number, unsigned *channel, unsigned *sample, FLAC__int32 *expected, FLAC__int32 *got)
1837 FLAC__ASSERT(0 != encoder);
1838 FLAC__ASSERT(0 != encoder->private_);
1839 FLAC__ASSERT(0 != encoder->protected_);
1840 if(0 != absolute_sample)
1841 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1842 if(0 != frame_number)
1843 *frame_number = encoder->private_->verify.error_stats.frame_number;
1845 *channel = encoder->private_->verify.error_stats.channel;
1847 *sample = encoder->private_->verify.error_stats.sample;
1849 *expected = encoder->private_->verify.error_stats.expected;
1851 *got = encoder->private_->verify.error_stats.got;
1854 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1856 FLAC__ASSERT(0 != encoder);
1857 FLAC__ASSERT(0 != encoder->private_);
1858 FLAC__ASSERT(0 != encoder->protected_);
1859 return encoder->protected_->verify;
1862 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1864 FLAC__ASSERT(0 != encoder);
1865 FLAC__ASSERT(0 != encoder->private_);
1866 FLAC__ASSERT(0 != encoder->protected_);
1867 return encoder->protected_->streamable_subset;
1870 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1872 FLAC__ASSERT(0 != encoder);
1873 FLAC__ASSERT(0 != encoder->private_);
1874 FLAC__ASSERT(0 != encoder->protected_);
1875 return encoder->protected_->channels;
1878 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1880 FLAC__ASSERT(0 != encoder);
1881 FLAC__ASSERT(0 != encoder->private_);
1882 FLAC__ASSERT(0 != encoder->protected_);
1883 return encoder->protected_->bits_per_sample;
1886 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1888 FLAC__ASSERT(0 != encoder);
1889 FLAC__ASSERT(0 != encoder->private_);
1890 FLAC__ASSERT(0 != encoder->protected_);
1891 return encoder->protected_->sample_rate;
1894 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1896 FLAC__ASSERT(0 != encoder);
1897 FLAC__ASSERT(0 != encoder->private_);
1898 FLAC__ASSERT(0 != encoder->protected_);
1899 return encoder->protected_->blocksize;
1902 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1904 FLAC__ASSERT(0 != encoder);
1905 FLAC__ASSERT(0 != encoder->private_);
1906 FLAC__ASSERT(0 != encoder->protected_);
1907 return encoder->protected_->do_mid_side_stereo;
1910 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1912 FLAC__ASSERT(0 != encoder);
1913 FLAC__ASSERT(0 != encoder->private_);
1914 FLAC__ASSERT(0 != encoder->protected_);
1915 return encoder->protected_->loose_mid_side_stereo;
1918 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1920 FLAC__ASSERT(0 != encoder);
1921 FLAC__ASSERT(0 != encoder->private_);
1922 FLAC__ASSERT(0 != encoder->protected_);
1923 return encoder->protected_->max_lpc_order;
1926 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1928 FLAC__ASSERT(0 != encoder);
1929 FLAC__ASSERT(0 != encoder->private_);
1930 FLAC__ASSERT(0 != encoder->protected_);
1931 return encoder->protected_->qlp_coeff_precision;
1934 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1936 FLAC__ASSERT(0 != encoder);
1937 FLAC__ASSERT(0 != encoder->private_);
1938 FLAC__ASSERT(0 != encoder->protected_);
1939 return encoder->protected_->do_qlp_coeff_prec_search;
1942 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1944 FLAC__ASSERT(0 != encoder);
1945 FLAC__ASSERT(0 != encoder->private_);
1946 FLAC__ASSERT(0 != encoder->protected_);
1947 return encoder->protected_->do_escape_coding;
1950 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1952 FLAC__ASSERT(0 != encoder);
1953 FLAC__ASSERT(0 != encoder->private_);
1954 FLAC__ASSERT(0 != encoder->protected_);
1955 return encoder->protected_->do_exhaustive_model_search;
1958 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1960 FLAC__ASSERT(0 != encoder);
1961 FLAC__ASSERT(0 != encoder->private_);
1962 FLAC__ASSERT(0 != encoder->protected_);
1963 return encoder->protected_->min_residual_partition_order;
1966 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1968 FLAC__ASSERT(0 != encoder);
1969 FLAC__ASSERT(0 != encoder->private_);
1970 FLAC__ASSERT(0 != encoder->protected_);
1971 return encoder->protected_->max_residual_partition_order;
1974 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1976 FLAC__ASSERT(0 != encoder);
1977 FLAC__ASSERT(0 != encoder->private_);
1978 FLAC__ASSERT(0 != encoder->protected_);
1979 return encoder->protected_->rice_parameter_search_dist;
1982 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1984 FLAC__ASSERT(0 != encoder);
1985 FLAC__ASSERT(0 != encoder->private_);
1986 FLAC__ASSERT(0 != encoder->protected_);
1987 return encoder->protected_->total_samples_estimate;
1990 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1992 unsigned i, j, channel;
1993 FLAC__int32 x, mid, side;
1994 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1996 FLAC__ASSERT(0 != encoder);
1997 FLAC__ASSERT(0 != encoder->private_);
1998 FLAC__ASSERT(0 != encoder->protected_);
1999 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2003 * we have several flavors of the same basic loop, optimized for
2004 * different conditions:
2006 if(encoder->protected_->max_lpc_order > 0) {
2007 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2009 * stereo coding: unroll channel loop
2010 * with LPC: calculate floating point version of signal
2013 if(encoder->protected_->verify)
2014 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2016 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2017 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2018 x = mid = side = buffer[0][j];
2019 encoder->private_->integer_signal[0][i] = x;
2020 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2021 encoder->private_->real_signal[0][i] = (FLAC__real)x;
2024 encoder->private_->integer_signal[1][i] = x;
2025 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2026 encoder->private_->real_signal[1][i] = (FLAC__real)x;
2030 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2031 encoder->private_->integer_signal_mid_side[1][i] = side;
2032 encoder->private_->integer_signal_mid_side[0][i] = mid;
2033 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2034 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2035 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2037 encoder->private_->current_sample_number++;
2039 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2041 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2043 /* move unprocessed overread samples to beginnings of arrays */
2044 FLAC__ASSERT(i == blocksize+OVERREAD_);
2045 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2047 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2048 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2049 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2050 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2051 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2052 encoder->private_->real_signal[0][0] = encoder->private_->real_signal[0][i];
2053 encoder->private_->real_signal[1][0] = encoder->private_->real_signal[1][i];
2054 encoder->private_->real_signal_mid_side[0][0] = encoder->private_->real_signal_mid_side[0][i];
2055 encoder->private_->real_signal_mid_side[1][0] = encoder->private_->real_signal_mid_side[1][i];
2057 encoder->private_->current_sample_number = 1;
2059 } while(j < samples);
2063 * independent channel coding: buffer each channel in inner loop
2064 * with LPC: calculate floating point version of signal
2067 if(encoder->protected_->verify)
2068 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2070 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2071 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2072 for(channel = 0; channel < channels; channel++) {
2073 x = buffer[channel][j];
2074 encoder->private_->integer_signal[channel][i] = x;
2075 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2076 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2079 encoder->private_->current_sample_number++;
2081 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2083 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2085 /* move unprocessed overread samples to beginnings of arrays */
2086 FLAC__ASSERT(i == blocksize+OVERREAD_);
2087 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2089 for(channel = 0; channel < channels; channel++) {
2090 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2091 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2092 encoder->private_->real_signal[channel][0] = encoder->private_->real_signal[channel][i];
2095 encoder->private_->current_sample_number = 1;
2097 } while(j < samples);
2101 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2103 * stereo coding: unroll channel loop
2104 * without LPC: no need to calculate floating point version of signal
2107 if(encoder->protected_->verify)
2108 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2110 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2111 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2112 encoder->private_->integer_signal[0][i] = mid = side = buffer[0][j];
2114 encoder->private_->integer_signal[1][i] = x;
2117 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2118 encoder->private_->integer_signal_mid_side[1][i] = side;
2119 encoder->private_->integer_signal_mid_side[0][i] = mid;
2120 encoder->private_->current_sample_number++;
2122 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2124 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2126 /* move unprocessed overread samples to beginnings of arrays */
2127 FLAC__ASSERT(i == blocksize+OVERREAD_);
2128 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2130 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2131 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2132 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2133 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2134 encoder->private_->current_sample_number = 1;
2136 } while(j < samples);
2140 * independent channel coding: buffer each channel in inner loop
2141 * without LPC: no need to calculate floating point version of signal
2144 if(encoder->protected_->verify)
2145 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2147 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2148 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2149 for(channel = 0; channel < channels; channel++)
2150 encoder->private_->integer_signal[channel][i] = buffer[channel][j];
2151 encoder->private_->current_sample_number++;
2153 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2155 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2157 /* move unprocessed overread samples to beginnings of arrays */
2158 FLAC__ASSERT(i == blocksize+OVERREAD_);
2159 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2161 for(channel = 0; channel < channels; channel++)
2162 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2163 encoder->private_->current_sample_number = 1;
2165 } while(j < samples);
2172 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2174 unsigned i, j, k, channel;
2175 FLAC__int32 x, mid, side;
2176 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2178 FLAC__ASSERT(0 != encoder);
2179 FLAC__ASSERT(0 != encoder->private_);
2180 FLAC__ASSERT(0 != encoder->protected_);
2181 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2185 * we have several flavors of the same basic loop, optimized for
2186 * different conditions:
2188 if(encoder->protected_->max_lpc_order > 0) {
2189 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2191 * stereo coding: unroll channel loop
2192 * with LPC: calculate floating point version of signal
2195 if(encoder->protected_->verify)
2196 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2198 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2199 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2200 x = mid = side = buffer[k++];
2201 encoder->private_->integer_signal[0][i] = x;
2202 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2203 encoder->private_->real_signal[0][i] = (FLAC__real)x;
2206 encoder->private_->integer_signal[1][i] = x;
2207 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2208 encoder->private_->real_signal[1][i] = (FLAC__real)x;
2212 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2213 encoder->private_->integer_signal_mid_side[1][i] = side;
2214 encoder->private_->integer_signal_mid_side[0][i] = mid;
2215 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2216 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2217 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2219 encoder->private_->current_sample_number++;
2221 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2223 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2225 /* move unprocessed overread samples to beginnings of arrays */
2226 FLAC__ASSERT(i == blocksize+OVERREAD_);
2227 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2229 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2230 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2231 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2232 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2233 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2234 encoder->private_->real_signal[0][0] = encoder->private_->real_signal[0][i];
2235 encoder->private_->real_signal[1][0] = encoder->private_->real_signal[1][i];
2236 encoder->private_->real_signal_mid_side[0][0] = encoder->private_->real_signal_mid_side[0][i];
2237 encoder->private_->real_signal_mid_side[1][0] = encoder->private_->real_signal_mid_side[1][i];
2239 encoder->private_->current_sample_number = 1;
2241 } while(j < samples);
2245 * independent channel coding: buffer each channel in inner loop
2246 * with LPC: calculate floating point version of signal
2249 if(encoder->protected_->verify)
2250 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2252 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2253 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2254 for(channel = 0; channel < channels; channel++) {
2256 encoder->private_->integer_signal[channel][i] = x;
2257 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2258 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2261 encoder->private_->current_sample_number++;
2263 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2265 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2267 /* move unprocessed overread samples to beginnings of arrays */
2268 FLAC__ASSERT(i == blocksize+OVERREAD_);
2269 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2271 for(channel = 0; channel < channels; channel++) {
2272 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2273 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2274 encoder->private_->real_signal[channel][0] = encoder->private_->real_signal[channel][i];
2277 encoder->private_->current_sample_number = 1;
2279 } while(j < samples);
2283 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2285 * stereo coding: unroll channel loop
2286 * without LPC: no need to calculate floating point version of signal
2289 if(encoder->protected_->verify)
2290 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2292 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2293 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2294 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2296 encoder->private_->integer_signal[1][i] = x;
2299 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2300 encoder->private_->integer_signal_mid_side[1][i] = side;
2301 encoder->private_->integer_signal_mid_side[0][i] = mid;
2302 encoder->private_->current_sample_number++;
2304 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2306 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2308 /* move unprocessed overread samples to beginnings of arrays */
2309 FLAC__ASSERT(i == blocksize+OVERREAD_);
2310 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2312 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2313 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2314 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2315 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2316 encoder->private_->current_sample_number = 1;
2318 } while(j < samples);
2322 * independent channel coding: buffer each channel in inner loop
2323 * without LPC: no need to calculate floating point version of signal
2326 if(encoder->protected_->verify)
2327 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2329 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2330 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2331 for(channel = 0; channel < channels; channel++)
2332 encoder->private_->integer_signal[channel][i] = buffer[k++];
2333 encoder->private_->current_sample_number++;
2335 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2337 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2339 /* move unprocessed overread samples to beginnings of arrays */
2340 FLAC__ASSERT(i == blocksize+OVERREAD_);
2341 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2343 for(channel = 0; channel < channels; channel++)
2344 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2345 encoder->private_->current_sample_number = 1;
2347 } while(j < samples);
2354 /***********************************************************************
2356 * Private class methods
2358 ***********************************************************************/
2360 void set_defaults_(FLAC__StreamEncoder *encoder)
2362 FLAC__ASSERT(0 != encoder);
2364 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2365 encoder->protected_->verify = true;
2367 encoder->protected_->verify = false;
2369 encoder->protected_->streamable_subset = true;
2370 encoder->protected_->do_mid_side_stereo = false;
2371 encoder->protected_->loose_mid_side_stereo = false;
2372 encoder->protected_->channels = 2;
2373 encoder->protected_->bits_per_sample = 16;
2374 encoder->protected_->sample_rate = 44100;
2375 encoder->protected_->blocksize = 0;
2376 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2377 encoder->protected_->num_apodizations = 1;
2378 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2379 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2381 encoder->protected_->max_lpc_order = 0;
2382 encoder->protected_->qlp_coeff_precision = 0;
2383 encoder->protected_->do_qlp_coeff_prec_search = false;
2384 encoder->protected_->do_exhaustive_model_search = false;
2385 encoder->protected_->do_escape_coding = false;
2386 encoder->protected_->min_residual_partition_order = 0;
2387 encoder->protected_->max_residual_partition_order = 0;
2388 encoder->protected_->rice_parameter_search_dist = 0;
2389 encoder->protected_->total_samples_estimate = 0;
2390 encoder->protected_->metadata = 0;
2391 encoder->protected_->num_metadata_blocks = 0;
2393 encoder->private_->seek_table = 0;
2394 encoder->private_->disable_constant_subframes = false;
2395 encoder->private_->disable_fixed_subframes = false;
2396 encoder->private_->disable_verbatim_subframes = false;
2398 encoder->private_->is_ogg = false;
2400 encoder->private_->read_callback = 0;
2401 encoder->private_->write_callback = 0;
2402 encoder->private_->seek_callback = 0;
2403 encoder->private_->tell_callback = 0;
2404 encoder->private_->metadata_callback = 0;
2405 encoder->private_->progress_callback = 0;
2406 encoder->private_->client_data = 0;
2409 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2413 void free_(FLAC__StreamEncoder *encoder)
2415 unsigned i, channel;
2417 FLAC__ASSERT(0 != encoder);
2418 for(i = 0; i < encoder->protected_->channels; i++) {
2419 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2420 free(encoder->private_->integer_signal_unaligned[i]);
2421 encoder->private_->integer_signal_unaligned[i] = 0;
2423 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2424 if(0 != encoder->private_->real_signal_unaligned[i]) {
2425 free(encoder->private_->real_signal_unaligned[i]);
2426 encoder->private_->real_signal_unaligned[i] = 0;
2430 for(i = 0; i < 2; i++) {
2431 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2432 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2433 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2435 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2436 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2437 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2438 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2442 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2443 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2444 if(0 != encoder->private_->window_unaligned[i]) {
2445 free(encoder->private_->window_unaligned[i]);
2446 encoder->private_->window_unaligned[i] = 0;
2449 if(0 != encoder->private_->windowed_signal_unaligned) {
2450 free(encoder->private_->windowed_signal_unaligned);
2451 encoder->private_->windowed_signal_unaligned = 0;
2454 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2455 for(i = 0; i < 2; i++) {
2456 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2457 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2458 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2462 for(channel = 0; channel < 2; channel++) {
2463 for(i = 0; i < 2; i++) {
2464 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2465 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2466 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2470 if(0 != encoder->private_->abs_residual_unaligned) {
2471 free(encoder->private_->abs_residual_unaligned);
2472 encoder->private_->abs_residual_unaligned = 0;
2474 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2475 free(encoder->private_->abs_residual_partition_sums_unaligned);
2476 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2478 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2479 free(encoder->private_->raw_bits_per_partition_unaligned);
2480 encoder->private_->raw_bits_per_partition_unaligned = 0;
2482 if(encoder->protected_->verify) {
2483 for(i = 0; i < encoder->protected_->channels; i++) {
2484 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2485 free(encoder->private_->verify.input_fifo.data[i]);
2486 encoder->private_->verify.input_fifo.data[i] = 0;
2490 FLAC__bitbuffer_free(encoder->private_->frame);
2493 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2496 unsigned i, channel;
2498 FLAC__ASSERT(new_blocksize > 0);
2499 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2500 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2502 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2503 if(new_blocksize <= encoder->private_->input_capacity)
2508 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2509 * requires that the input arrays (in our case the integer signals)
2510 * have a buffer of up to 3 zeroes in front (at negative indices) for
2511 * alignment purposes; we use 4 in front to keep the data well-aligned.
2514 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2515 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2516 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2517 encoder->private_->integer_signal[i] += 4;
2518 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2519 if(encoder->protected_->max_lpc_order > 0)
2520 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2523 for(i = 0; ok && i < 2; i++) {
2524 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]);
2525 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2526 encoder->private_->integer_signal_mid_side[i] += 4;
2527 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2528 if(encoder->protected_->max_lpc_order > 0)
2529 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]);
2532 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2533 if(ok && encoder->protected_->max_lpc_order > 0) {
2534 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2535 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2536 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2539 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2540 for(i = 0; ok && i < 2; i++) {
2541 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2544 for(channel = 0; ok && channel < 2; channel++) {
2545 for(i = 0; ok && i < 2; i++) {
2546 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]);
2549 ok = ok && FLAC__memory_alloc_aligned_uint32_array(new_blocksize, &encoder->private_->abs_residual_unaligned, &encoder->private_->abs_residual);
2550 if(encoder->private_->precompute_partition_sums || encoder->protected_->do_escape_coding) /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */
2551 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2552 if(encoder->protected_->do_escape_coding)
2553 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2555 /* now adjust the windows if the blocksize has changed */
2556 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2557 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2558 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2559 switch(encoder->protected_->apodizations[i].type) {
2560 case FLAC__APODIZATION_BARTLETT:
2561 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2563 case FLAC__APODIZATION_BARTLETT_HANN:
2564 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2566 case FLAC__APODIZATION_BLACKMAN:
2567 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2569 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2570 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2572 case FLAC__APODIZATION_CONNES:
2573 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2575 case FLAC__APODIZATION_FLATTOP:
2576 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2578 case FLAC__APODIZATION_GAUSS:
2579 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2581 case FLAC__APODIZATION_HAMMING:
2582 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2584 case FLAC__APODIZATION_HANN:
2585 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2587 case FLAC__APODIZATION_KAISER_BESSEL:
2588 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2590 case FLAC__APODIZATION_NUTTALL:
2591 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2593 case FLAC__APODIZATION_RECTANGLE:
2594 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2596 case FLAC__APODIZATION_TRIANGLE:
2597 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2599 case FLAC__APODIZATION_TUKEY:
2600 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2602 case FLAC__APODIZATION_WELCH:
2603 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2607 /* double protection */
2608 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2616 encoder->private_->input_capacity = new_blocksize;
2618 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2623 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2625 const FLAC__byte *buffer;
2628 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
2630 FLAC__bitbuffer_get_buffer(encoder->private_->frame, &buffer, &bytes);
2632 if(encoder->protected_->verify) {
2633 encoder->private_->verify.output.data = buffer;
2634 encoder->private_->verify.output.bytes = bytes;
2635 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2636 encoder->private_->verify.needs_magic_hack = true;
2639 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2640 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2641 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2642 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2648 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2649 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2650 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2654 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2657 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2658 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2664 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2666 FLAC__StreamEncoderWriteStatus status;
2667 FLAC__uint64 output_position = 0;
2669 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2670 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2671 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2672 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2676 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2679 FLAC__MetadataType type = (buffer[0] & 0x7f);
2680 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2681 encoder->protected_->streaminfo_offset = output_position;
2682 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2683 encoder->protected_->seektable_offset = output_position;
2687 * Mark the current seek point if hit (if audio_offset == 0 that
2688 * means we're still writing metadata and haven't hit the first
2691 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2692 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2693 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2694 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2695 FLAC__uint64 test_sample;
2697 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2698 test_sample = encoder->private_->seek_table->points[i].sample_number;
2699 if(test_sample > frame_last_sample) {
2702 else if(test_sample >= frame_first_sample) {
2703 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2704 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2705 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2706 encoder->private_->first_seekpoint_to_check++;
2707 /* DO NOT: "break;" and here's why:
2708 * The seektable template may contain more than one target
2709 * sample for any given frame; we will keep looping, generating
2710 * duplicate seekpoints for them, and we'll clean it up later,
2711 * just before writing the seektable back to the metadata.
2715 encoder->private_->first_seekpoint_to_check++;
2721 if(encoder->private_->is_ogg) {
2722 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2723 &encoder->protected_->ogg_encoder_aspect,
2727 encoder->private_->current_frame_number,
2729 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2731 encoder->private_->client_data
2736 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2738 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2739 encoder->private_->bytes_written += bytes;
2740 encoder->private_->samples_written += samples;
2741 /* we keep a high watermark on the number of frames written because
2742 * when the encoder goes back to write metadata, 'current_frame'
2743 * will drop back to 0.
2745 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2748 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2753 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2754 void update_metadata_(const FLAC__StreamEncoder *encoder)
2756 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2757 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2758 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2759 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2760 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2761 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2762 FLAC__StreamEncoderSeekStatus seek_status;
2764 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2766 /* All this is based on intimate knowledge of the stream header
2767 * layout, but a change to the header format that would break this
2768 * would also break all streams encoded in the previous format.
2772 * Write MD5 signature
2775 const unsigned md5_offset =
2776 FLAC__STREAM_METADATA_HEADER_LENGTH +
2778 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2779 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2780 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2781 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2782 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2783 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2784 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2785 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2788 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2789 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2790 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2793 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2794 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2800 * Write total samples
2803 const unsigned total_samples_byte_offset =
2804 FLAC__STREAM_METADATA_HEADER_LENGTH +
2806 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2807 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2808 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2809 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2810 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2811 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2812 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2816 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2817 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2818 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2819 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2820 b[4] = (FLAC__byte)(samples & 0xFF);
2821 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + total_samples_byte_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2822 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2823 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2826 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2827 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2833 * Write min/max framesize
2836 const unsigned min_framesize_offset =
2837 FLAC__STREAM_METADATA_HEADER_LENGTH +
2839 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2840 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2843 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2844 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2845 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2846 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2847 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2848 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2849 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + min_framesize_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2850 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2851 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2854 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2855 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2863 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2866 FLAC__format_seektable_sort(encoder->private_->seek_table);
2868 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2870 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->seektable_offset + FLAC__STREAM_METADATA_HEADER_LENGTH, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2871 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2872 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2876 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2879 xx = encoder->private_->seek_table->points[i].sample_number;
2880 b[7] = (FLAC__byte)xx; xx >>= 8;
2881 b[6] = (FLAC__byte)xx; xx >>= 8;
2882 b[5] = (FLAC__byte)xx; xx >>= 8;
2883 b[4] = (FLAC__byte)xx; xx >>= 8;
2884 b[3] = (FLAC__byte)xx; xx >>= 8;
2885 b[2] = (FLAC__byte)xx; xx >>= 8;
2886 b[1] = (FLAC__byte)xx; xx >>= 8;
2887 b[0] = (FLAC__byte)xx; xx >>= 8;
2888 xx = encoder->private_->seek_table->points[i].stream_offset;
2889 b[15] = (FLAC__byte)xx; xx >>= 8;
2890 b[14] = (FLAC__byte)xx; xx >>= 8;
2891 b[13] = (FLAC__byte)xx; xx >>= 8;
2892 b[12] = (FLAC__byte)xx; xx >>= 8;
2893 b[11] = (FLAC__byte)xx; xx >>= 8;
2894 b[10] = (FLAC__byte)xx; xx >>= 8;
2895 b[9] = (FLAC__byte)xx; xx >>= 8;
2896 b[8] = (FLAC__byte)xx; xx >>= 8;
2897 x = encoder->private_->seek_table->points[i].frame_samples;
2898 b[17] = (FLAC__byte)x; x >>= 8;
2899 b[16] = (FLAC__byte)x; x >>= 8;
2900 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2901 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2909 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2910 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2912 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2913 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2914 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2915 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2916 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2917 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2918 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2919 FLAC__STREAM_SYNC_LENGTH
2921 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2922 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2923 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2924 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2925 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2928 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2929 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2931 /* Pre-check that client supports seeking, since we don't want the
2932 * ogg_helper code to ever have to deal with this condition.
2934 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2937 /* All this is based on intimate knowledge of the stream header
2938 * layout, but a change to the header format that would break this
2939 * would also break all streams encoded in the previous format.
2943 ** Write STREAMINFO stats
2945 simple_ogg_page__init(&page);
2946 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2947 simple_ogg_page__clear(&page);
2948 return; /* state already set */
2952 * Write MD5 signature
2955 const unsigned md5_offset =
2956 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2957 FLAC__STREAM_METADATA_HEADER_LENGTH +
2959 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2960 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2961 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2962 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2963 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2964 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2965 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2966 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2969 if(md5_offset + 16 > (unsigned)page.body_len) {
2970 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2971 simple_ogg_page__clear(&page);
2974 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2978 * Write total samples
2981 const unsigned total_samples_byte_offset =
2982 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2983 FLAC__STREAM_METADATA_HEADER_LENGTH +
2985 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2986 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2987 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2988 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2989 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2990 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2991 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2995 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2996 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2997 simple_ogg_page__clear(&page);
3000 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
3001 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
3002 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
3003 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
3004 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
3005 b[4] = (FLAC__byte)(samples & 0xFF);
3006 memcpy(page.body + total_samples_byte_offset, b, 5);
3010 * Write min/max framesize
3013 const unsigned min_framesize_offset =
3014 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
3015 FLAC__STREAM_METADATA_HEADER_LENGTH +
3017 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
3018 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
3021 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
3022 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
3023 simple_ogg_page__clear(&page);
3026 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
3027 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
3028 b[2] = (FLAC__byte)(min_framesize & 0xFF);
3029 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
3030 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
3031 b[5] = (FLAC__byte)(max_framesize & 0xFF);
3032 memcpy(page.body + min_framesize_offset, b, 6);
3034 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
3035 simple_ogg_page__clear(&page);
3036 return; /* state already set */
3038 simple_ogg_page__clear(&page);
3043 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
3047 FLAC__format_seektable_sort(encoder->private_->seek_table);
3049 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
3051 simple_ogg_page__init(&page);
3052 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
3053 simple_ogg_page__clear(&page);
3054 return; /* state already set */
3057 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
3058 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
3059 simple_ogg_page__clear(&page);
3063 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
3066 xx = encoder->private_->seek_table->points[i].sample_number;
3067 b[7] = (FLAC__byte)xx; xx >>= 8;
3068 b[6] = (FLAC__byte)xx; xx >>= 8;
3069 b[5] = (FLAC__byte)xx; xx >>= 8;
3070 b[4] = (FLAC__byte)xx; xx >>= 8;
3071 b[3] = (FLAC__byte)xx; xx >>= 8;
3072 b[2] = (FLAC__byte)xx; xx >>= 8;
3073 b[1] = (FLAC__byte)xx; xx >>= 8;
3074 b[0] = (FLAC__byte)xx; xx >>= 8;
3075 xx = encoder->private_->seek_table->points[i].stream_offset;
3076 b[15] = (FLAC__byte)xx; xx >>= 8;
3077 b[14] = (FLAC__byte)xx; xx >>= 8;
3078 b[13] = (FLAC__byte)xx; xx >>= 8;
3079 b[12] = (FLAC__byte)xx; xx >>= 8;
3080 b[11] = (FLAC__byte)xx; xx >>= 8;
3081 b[10] = (FLAC__byte)xx; xx >>= 8;
3082 b[9] = (FLAC__byte)xx; xx >>= 8;
3083 b[8] = (FLAC__byte)xx; xx >>= 8;
3084 x = encoder->private_->seek_table->points[i].frame_samples;
3085 b[17] = (FLAC__byte)x; x >>= 8;
3086 b[16] = (FLAC__byte)x; x >>= 8;
3090 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
3091 simple_ogg_page__clear(&page);
3092 return; /* state already set */
3094 simple_ogg_page__clear(&page);
3099 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
3101 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
3104 * Accumulate raw signal to the MD5 signature
3106 if(!FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) {
3107 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3112 * Process the frame header and subframes into the frame bitbuffer
3114 if(!process_subframes_(encoder, is_fractional_block)) {
3115 /* the above function sets the state for us in case of an error */
3120 * Zero-pad the frame to a byte_boundary
3122 if(!FLAC__bitbuffer_zero_pad_to_byte_boundary(encoder->private_->frame)) {
3123 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3128 * CRC-16 the whole thing
3130 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
3131 FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__bitbuffer_get_write_crc16(encoder->private_->frame), FLAC__FRAME_FOOTER_CRC_LEN);
3136 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
3137 /* the above function sets the state for us in case of an error */
3142 * Get ready for the next frame
3144 encoder->private_->current_sample_number = 0;
3145 encoder->private_->current_frame_number++;
3146 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
3151 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
3153 FLAC__FrameHeader frame_header;
3154 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
3155 FLAC__bool do_independent, do_mid_side, precompute_partition_sums;
3158 * Calculate the min,max Rice partition orders
3160 if(is_fractional_block) {
3161 max_partition_order = 0;
3164 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
3165 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
3167 min_partition_order = min(min_partition_order, max_partition_order);
3169 precompute_partition_sums = encoder->private_->precompute_partition_sums && ((max_partition_order > min_partition_order) || encoder->protected_->do_escape_coding);
3174 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
3175 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3178 frame_header.blocksize = encoder->protected_->blocksize;
3179 frame_header.sample_rate = encoder->protected_->sample_rate;
3180 frame_header.channels = encoder->protected_->channels;
3181 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
3182 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
3183 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
3184 frame_header.number.frame_number = encoder->private_->current_frame_number;
3187 * Figure out what channel assignments to try
3189 if(encoder->protected_->do_mid_side_stereo) {
3190 if(encoder->protected_->loose_mid_side_stereo) {
3191 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
3192 do_independent = true;
3196 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
3197 do_mid_side = !do_independent;
3201 do_independent = true;
3206 do_independent = true;
3207 do_mid_side = false;
3210 FLAC__ASSERT(do_independent || do_mid_side);
3213 * Check for wasted bits; set effective bps for each subframe
3215 if(do_independent) {
3216 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3217 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
3218 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
3219 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
3223 FLAC__ASSERT(encoder->protected_->channels == 2);
3224 for(channel = 0; channel < 2; channel++) {
3225 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
3226 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
3227 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
3232 * First do a normal encoding pass of each independent channel
3234 if(do_independent) {
3235 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3239 min_partition_order,
3240 max_partition_order,
3241 precompute_partition_sums,
3243 encoder->private_->subframe_bps[channel],
3244 encoder->private_->integer_signal[channel],
3245 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3246 encoder->private_->real_signal[channel],
3248 encoder->private_->subframe_workspace_ptr[channel],
3249 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
3250 encoder->private_->residual_workspace[channel],
3251 encoder->private_->best_subframe+channel,
3252 encoder->private_->best_subframe_bits+channel
3260 * Now do mid and side channels if requested
3263 FLAC__ASSERT(encoder->protected_->channels == 2);
3265 for(channel = 0; channel < 2; channel++) {
3269 min_partition_order,
3270 max_partition_order,
3271 precompute_partition_sums,
3273 encoder->private_->subframe_bps_mid_side[channel],
3274 encoder->private_->integer_signal_mid_side[channel],
3275 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3276 encoder->private_->real_signal_mid_side[channel],
3278 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3279 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3280 encoder->private_->residual_workspace_mid_side[channel],
3281 encoder->private_->best_subframe_mid_side+channel,
3282 encoder->private_->best_subframe_bits_mid_side+channel
3290 * Compose the frame bitbuffer
3293 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3294 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3295 FLAC__ChannelAssignment channel_assignment;
3297 FLAC__ASSERT(encoder->protected_->channels == 2);
3299 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3300 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3303 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3305 FLAC__ChannelAssignment ca;
3307 FLAC__ASSERT(do_independent && do_mid_side);
3309 /* We have to figure out which channel assignent results in the smallest frame */
3310 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3311 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3312 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3313 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3315 for(channel_assignment = (FLAC__ChannelAssignment)0, min_bits = bits[0], ca = (FLAC__ChannelAssignment)1; (int)ca <= 3; ca = (FLAC__ChannelAssignment)((int)ca + 1)) {
3316 if(bits[ca] < min_bits) {
3317 min_bits = bits[ca];
3318 channel_assignment = ca;
3323 frame_header.channel_assignment = channel_assignment;
3325 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3326 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3330 switch(channel_assignment) {
3331 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3332 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3333 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3335 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3336 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3337 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3339 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3340 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3341 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3343 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3344 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3345 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3351 switch(channel_assignment) {
3352 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3353 left_bps = encoder->private_->subframe_bps [0];
3354 right_bps = encoder->private_->subframe_bps [1];
3356 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3357 left_bps = encoder->private_->subframe_bps [0];
3358 right_bps = encoder->private_->subframe_bps_mid_side[1];
3360 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3361 left_bps = encoder->private_->subframe_bps_mid_side[1];
3362 right_bps = encoder->private_->subframe_bps [1];
3364 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3365 left_bps = encoder->private_->subframe_bps_mid_side[0];
3366 right_bps = encoder->private_->subframe_bps_mid_side[1];
3372 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3373 if(!add_subframe_(encoder, &frame_header, left_bps , left_subframe , encoder->private_->frame))
3375 if(!add_subframe_(encoder, &frame_header, right_bps, right_subframe, encoder->private_->frame))
3379 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3380 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3384 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3385 if(!add_subframe_(encoder, &frame_header, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) {
3386 /* the above function sets the state for us in case of an error */
3392 if(encoder->protected_->loose_mid_side_stereo) {
3393 encoder->private_->loose_mid_side_stereo_frame_count++;
3394 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3395 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3398 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3403 FLAC__bool process_subframe_(
3404 FLAC__StreamEncoder *encoder,
3405 unsigned min_partition_order,
3406 unsigned max_partition_order,
3407 FLAC__bool precompute_partition_sums,
3408 const FLAC__FrameHeader *frame_header,
3409 unsigned subframe_bps,
3410 const FLAC__int32 integer_signal[],
3411 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3412 const FLAC__real real_signal[],
3414 FLAC__Subframe *subframe[2],
3415 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3416 FLAC__int32 *residual[2],
3417 unsigned *best_subframe,
3421 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3422 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3424 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3426 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3427 FLAC__double lpc_residual_bits_per_sample;
3428 FLAC__real autoc[FLAC__MAX_LPC_ORDER+1]; /* WATCHOUT: the size is important even though encoder->protected_->max_lpc_order might be less; some asm routines need all the space */
3429 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3430 unsigned min_lpc_order, max_lpc_order, lpc_order;
3431 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3433 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3434 unsigned rice_parameter;
3435 unsigned _candidate_bits, _best_bits;
3436 unsigned _best_subframe;
3438 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3440 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3441 _best_bits = UINT_MAX;
3443 _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3445 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3446 unsigned signal_is_constant = false;
3447 guess_fixed_order = encoder->private_->local_fixed_compute_best_predictor(integer_signal+FLAC__MAX_FIXED_ORDER, frame_header->blocksize-FLAC__MAX_FIXED_ORDER, fixed_residual_bits_per_sample);
3448 /* check for constant subframe */
3450 !encoder->private_->disable_constant_subframes &&
3451 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3452 fixed_residual_bits_per_sample[1] == 0.0
3454 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3457 /* the above means it's possible all samples are the same value; now double-check it: */
3459 signal_is_constant = true;
3460 for(i = 1; i < frame_header->blocksize; i++) {
3461 if(integer_signal[0] != integer_signal[i]) {
3462 signal_is_constant = false;
3467 if(signal_is_constant) {
3468 _candidate_bits = evaluate_constant_subframe_(integer_signal[0], subframe_bps, subframe[!_best_subframe]);
3469 if(_candidate_bits < _best_bits) {
3470 _best_subframe = !_best_subframe;
3471 _best_bits = _candidate_bits;
3475 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3477 if(encoder->protected_->do_exhaustive_model_search) {
3478 min_fixed_order = 0;
3479 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3482 min_fixed_order = max_fixed_order = guess_fixed_order;
3484 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3485 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3486 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3487 continue; /* don't even try */
3488 rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > 0.0)? (unsigned)(fixed_residual_bits_per_sample[fixed_order]+0.5) : 0; /* 0.5 is for rounding */
3490 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3491 continue; /* don't even try */
3492 rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > FLAC__FP_ZERO)? (unsigned)FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]+FLAC__FP_ONE_HALF) : 0; /* 0.5 is for rounding */
3494 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3495 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3496 #ifdef DEBUG_VERBOSE
3497 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3499 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3502 evaluate_fixed_subframe_(
3505 residual[!_best_subframe],
3506 encoder->private_->abs_residual,
3507 encoder->private_->abs_residual_partition_sums,
3508 encoder->private_->raw_bits_per_partition,
3509 frame_header->blocksize,
3513 min_partition_order,
3514 max_partition_order,
3515 precompute_partition_sums,
3516 encoder->protected_->do_escape_coding,
3517 encoder->protected_->rice_parameter_search_dist,
3518 subframe[!_best_subframe],
3519 partitioned_rice_contents[!_best_subframe]
3521 if(_candidate_bits < _best_bits) {
3522 _best_subframe = !_best_subframe;
3523 _best_bits = _candidate_bits;
3528 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3530 if(encoder->protected_->max_lpc_order > 0) {
3531 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3532 max_lpc_order = frame_header->blocksize-1;
3534 max_lpc_order = encoder->protected_->max_lpc_order;
3535 if(max_lpc_order > 0) {
3537 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3538 FLAC__lpc_window_data(real_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3539 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3540 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3541 if(autoc[0] != 0.0) {
3542 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3543 if(encoder->protected_->do_exhaustive_model_search) {
3547 const unsigned guess_lpc_order =
3548 FLAC__lpc_compute_best_order(
3551 frame_header->blocksize,
3553 encoder->protected_->do_qlp_coeff_prec_search?
3554 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3555 encoder->protected_->qlp_coeff_precision
3558 min_lpc_order = max_lpc_order = guess_lpc_order;
3560 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3561 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3562 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3563 continue; /* don't even try */
3564 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3565 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3566 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3567 #ifdef DEBUG_VERBOSE
3568 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3570 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3572 if(encoder->protected_->do_qlp_coeff_prec_search) {
3573 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3574 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3575 if(subframe_bps <= 17) {
3576 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3577 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3580 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3583 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3585 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3587 evaluate_lpc_subframe_(
3590 residual[!_best_subframe],
3591 encoder->private_->abs_residual,
3592 encoder->private_->abs_residual_partition_sums,
3593 encoder->private_->raw_bits_per_partition,
3594 encoder->private_->lp_coeff[lpc_order-1],
3595 frame_header->blocksize,
3598 qlp_coeff_precision,
3600 min_partition_order,
3601 max_partition_order,
3602 precompute_partition_sums,
3603 encoder->protected_->do_escape_coding,
3604 encoder->protected_->rice_parameter_search_dist,
3605 subframe[!_best_subframe],
3606 partitioned_rice_contents[!_best_subframe]
3608 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3609 if(_candidate_bits < _best_bits) {
3610 _best_subframe = !_best_subframe;
3611 _best_bits = _candidate_bits;
3620 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3624 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3625 if(_best_bits == UINT_MAX) {
3626 FLAC__ASSERT(_best_subframe == 0);
3627 _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3630 *best_subframe = _best_subframe;
3631 *best_bits = _best_bits;
3636 FLAC__bool add_subframe_(
3637 FLAC__StreamEncoder *encoder,
3638 const FLAC__FrameHeader *frame_header,
3639 unsigned subframe_bps,
3640 const FLAC__Subframe *subframe,
3641 FLAC__BitBuffer *frame
3644 switch(subframe->type) {
3645 case FLAC__SUBFRAME_TYPE_CONSTANT:
3646 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3647 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3651 case FLAC__SUBFRAME_TYPE_FIXED:
3652 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), frame_header->blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3653 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3657 case FLAC__SUBFRAME_TYPE_LPC:
3658 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), frame_header->blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3659 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3663 case FLAC__SUBFRAME_TYPE_VERBATIM:
3664 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), frame_header->blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3665 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3676 unsigned evaluate_constant_subframe_(
3677 const FLAC__int32 signal,
3678 unsigned subframe_bps,
3679 FLAC__Subframe *subframe
3682 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3683 subframe->data.constant.value = signal;
3685 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe_bps;
3688 unsigned evaluate_fixed_subframe_(
3689 FLAC__StreamEncoder *encoder,
3690 const FLAC__int32 signal[],
3691 FLAC__int32 residual[],
3692 FLAC__uint32 abs_residual[],
3693 FLAC__uint64 abs_residual_partition_sums[],
3694 unsigned raw_bits_per_partition[],
3696 unsigned subframe_bps,
3698 unsigned rice_parameter,
3699 unsigned min_partition_order,
3700 unsigned max_partition_order,
3701 FLAC__bool precompute_partition_sums,
3702 FLAC__bool do_escape_coding,
3703 unsigned rice_parameter_search_dist,
3704 FLAC__Subframe *subframe,
3705 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3708 unsigned i, residual_bits;
3709 const unsigned residual_samples = blocksize - order;
3711 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3713 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3715 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3716 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3717 subframe->data.fixed.residual = residual;
3720 find_best_partition_order_(
3724 abs_residual_partition_sums,
3725 raw_bits_per_partition,
3729 min_partition_order,
3730 max_partition_order,
3731 precompute_partition_sums,
3733 rice_parameter_search_dist,
3734 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3737 subframe->data.fixed.order = order;
3738 for(i = 0; i < order; i++)
3739 subframe->data.fixed.warmup[i] = signal[i];
3741 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (order * subframe_bps) + residual_bits;
3744 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3745 unsigned evaluate_lpc_subframe_(
3746 FLAC__StreamEncoder *encoder,
3747 const FLAC__int32 signal[],
3748 FLAC__int32 residual[],
3749 FLAC__uint32 abs_residual[],
3750 FLAC__uint64 abs_residual_partition_sums[],
3751 unsigned raw_bits_per_partition[],
3752 const FLAC__real lp_coeff[],
3754 unsigned subframe_bps,
3756 unsigned qlp_coeff_precision,
3757 unsigned rice_parameter,
3758 unsigned min_partition_order,
3759 unsigned max_partition_order,
3760 FLAC__bool precompute_partition_sums,
3761 FLAC__bool do_escape_coding,
3762 unsigned rice_parameter_search_dist,
3763 FLAC__Subframe *subframe,
3764 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3767 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3768 unsigned i, residual_bits;
3769 int quantization, ret;
3770 const unsigned residual_samples = blocksize - order;
3772 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3773 if(subframe_bps <= 16) {
3774 FLAC__ASSERT(order > 0);
3775 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3776 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3779 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3781 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3783 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3784 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3785 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3787 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3789 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3791 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3793 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3794 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3795 subframe->data.lpc.residual = residual;
3798 find_best_partition_order_(
3802 abs_residual_partition_sums,
3803 raw_bits_per_partition,
3807 min_partition_order,
3808 max_partition_order,
3809 precompute_partition_sums,
3811 rice_parameter_search_dist,
3812 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3815 subframe->data.lpc.order = order;
3816 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3817 subframe->data.lpc.quantization_level = quantization;
3818 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3819 for(i = 0; i < order; i++)
3820 subframe->data.lpc.warmup[i] = signal[i];
3822 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits;
3826 unsigned evaluate_verbatim_subframe_(
3827 const FLAC__int32 signal[],
3829 unsigned subframe_bps,
3830 FLAC__Subframe *subframe
3833 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3835 subframe->data.verbatim.data = signal;
3837 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (blocksize * subframe_bps);
3840 unsigned find_best_partition_order_(
3841 FLAC__StreamEncoderPrivate *private_,
3842 const FLAC__int32 residual[],
3843 FLAC__uint32 abs_residual[],
3844 FLAC__uint64 abs_residual_partition_sums[],
3845 unsigned raw_bits_per_partition[],
3846 unsigned residual_samples,
3847 unsigned predictor_order,
3848 unsigned rice_parameter,
3849 unsigned min_partition_order,
3850 unsigned max_partition_order,
3851 FLAC__bool precompute_partition_sums,
3852 FLAC__bool do_escape_coding,
3853 unsigned rice_parameter_search_dist,
3854 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
3858 unsigned residual_bits, best_residual_bits = 0;
3859 unsigned residual_sample;
3860 unsigned best_parameters_index = 0;
3861 const unsigned blocksize = residual_samples + predictor_order;
3863 /* compute abs(residual) for use later */
3864 for(residual_sample = 0; residual_sample < residual_samples; residual_sample++) {
3865 r = residual[residual_sample];
3866 abs_residual[residual_sample] = (FLAC__uint32)(r<0? -r : r);
3869 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3870 min_partition_order = min(min_partition_order, max_partition_order);
3872 if(precompute_partition_sums) {
3873 int partition_order;
3876 precompute_partition_info_sums_(abs_residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order);
3878 if(do_escape_coding)
3879 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3881 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3882 #ifdef DONT_ESTIMATE_RICE_BITS
3884 set_partitioned_rice_with_precompute_(
3886 abs_residual_partition_sums+sum,
3887 raw_bits_per_partition+sum,
3891 rice_parameter_search_dist,
3892 (unsigned)partition_order,
3894 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3900 set_partitioned_rice_with_precompute_(
3902 abs_residual_partition_sums+sum,
3903 raw_bits_per_partition+sum,
3907 rice_parameter_search_dist,
3908 (unsigned)partition_order,
3910 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3916 FLAC__ASSERT(best_residual_bits != 0);
3919 sum += 1u << partition_order;
3920 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3921 best_residual_bits = residual_bits;
3922 best_parameters_index = !best_parameters_index;
3923 best_partitioned_rice->order = partition_order;
3928 unsigned partition_order;
3929 for(partition_order = min_partition_order; partition_order <= max_partition_order; partition_order++) {
3930 #ifdef DONT_ESTIMATE_RICE_BITS
3932 set_partitioned_rice_(
3938 rice_parameter_search_dist,
3940 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3946 set_partitioned_rice_(
3951 rice_parameter_search_dist,
3953 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3959 FLAC__ASSERT(best_residual_bits != 0);
3962 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3963 best_residual_bits = residual_bits;
3964 best_parameters_index = !best_parameters_index;
3965 best_partitioned_rice->order = partition_order;
3971 * We are allowed to de-const the pointer based on our special knowledge;
3972 * it is const to the outside world.
3975 FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents;
3976 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order));
3977 memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3978 memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3981 return best_residual_bits;
3984 void precompute_partition_info_sums_(
3985 const FLAC__uint32 abs_residual[],
3986 FLAC__uint64 abs_residual_partition_sums[],
3987 unsigned residual_samples,
3988 unsigned predictor_order,
3989 unsigned min_partition_order,
3990 unsigned max_partition_order
3993 int partition_order;
3994 unsigned from_partition, to_partition = 0;
3995 const unsigned blocksize = residual_samples + predictor_order;
3997 /* first do max_partition_order */
3998 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3999 FLAC__uint64 abs_residual_partition_sum;
4001 unsigned partition, partition_sample, partition_samples, residual_sample;
4002 const unsigned partitions = 1u << partition_order;
4003 const unsigned default_partition_samples = blocksize >> partition_order;
4005 FLAC__ASSERT(default_partition_samples > predictor_order);
4007 for(partition = residual_sample = 0; partition < partitions; partition++) {
4008 partition_samples = default_partition_samples;
4010 partition_samples -= predictor_order;
4011 abs_residual_partition_sum = 0;
4012 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
4013 abs_r = abs_residual[residual_sample];
4014 abs_residual_partition_sum += abs_r;
4017 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
4019 to_partition = partitions;
4023 /* now merge partitions for lower orders */
4024 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
4027 const unsigned partitions = 1u << partition_order;
4028 for(i = 0; i < partitions; i++) {
4029 s = abs_residual_partition_sums[from_partition];
4031 abs_residual_partition_sums[to_partition] = s + abs_residual_partition_sums[from_partition];
4038 void precompute_partition_info_escapes_(
4039 const FLAC__int32 residual[],
4040 unsigned raw_bits_per_partition[],
4041 unsigned residual_samples,
4042 unsigned predictor_order,
4043 unsigned min_partition_order,
4044 unsigned max_partition_order
4047 int partition_order;
4048 unsigned from_partition, to_partition = 0;
4049 const unsigned blocksize = residual_samples + predictor_order;
4051 /* first do max_partition_order */
4052 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
4053 FLAC__int32 r, residual_partition_min, residual_partition_max;
4054 unsigned silog2_min, silog2_max;
4055 unsigned partition, partition_sample, partition_samples, residual_sample;
4056 const unsigned partitions = 1u << partition_order;
4057 const unsigned default_partition_samples = blocksize >> partition_order;
4059 FLAC__ASSERT(default_partition_samples > predictor_order);
4061 for(partition = residual_sample = 0; partition < partitions; partition++) {
4062 partition_samples = default_partition_samples;
4064 partition_samples -= predictor_order;
4065 residual_partition_min = residual_partition_max = 0;
4066 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
4067 r = residual[residual_sample];
4068 if(r < residual_partition_min)
4069 residual_partition_min = r;
4070 else if(r > residual_partition_max)
4071 residual_partition_max = r;
4074 silog2_min = FLAC__bitmath_silog2(residual_partition_min);
4075 silog2_max = FLAC__bitmath_silog2(residual_partition_max);
4076 raw_bits_per_partition[partition] = max(silog2_min, silog2_max);
4078 to_partition = partitions;
4079 break; /*@@@ yuck, should remove the 'for' loop instead */
4082 /* now merge partitions for lower orders */
4083 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
4086 const unsigned partitions = 1u << partition_order;
4087 for(i = 0; i < partitions; i++) {
4088 m = raw_bits_per_partition[from_partition];
4090 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
4097 #ifdef VARIABLE_RICE_BITS
4098 #undef VARIABLE_RICE_BITS
4100 #ifndef DONT_ESTIMATE_RICE_BITS
4101 #define VARIABLE_RICE_BITS(value, parameter) ((value) >> (parameter))
4104 #ifdef DONT_ESTIMATE_RICE_BITS
4105 FLAC__bool set_partitioned_rice_(
4106 const FLAC__uint32 abs_residual[],
4107 const FLAC__int32 residual[],
4108 const unsigned residual_samples,
4109 const unsigned predictor_order,
4110 const unsigned suggested_rice_parameter,
4111 const unsigned rice_parameter_search_dist,
4112 const unsigned partition_order,
4113 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4117 FLAC__bool set_partitioned_rice_(
4118 const FLAC__uint32 abs_residual[],
4119 const unsigned residual_samples,
4120 const unsigned predictor_order,
4121 const unsigned suggested_rice_parameter,
4122 const unsigned rice_parameter_search_dist,
4123 const unsigned partition_order,
4124 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4129 unsigned rice_parameter, partition_bits;
4130 #ifndef NO_RICE_SEARCH
4131 unsigned best_partition_bits;
4132 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
4134 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
4135 unsigned *parameters;
4137 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
4139 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
4140 parameters = partitioned_rice_contents->parameters;
4142 if(partition_order == 0) {
4145 #ifndef NO_RICE_SEARCH
4146 if(rice_parameter_search_dist) {
4147 if(suggested_rice_parameter < rice_parameter_search_dist)
4148 min_rice_parameter = 0;
4150 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
4151 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
4152 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4153 #ifdef DEBUG_VERBOSE
4154 fprintf(stderr, "clipping rice_parameter (%u -> %u) @2\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4156 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4160 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
4162 best_partition_bits = 0xffffffff;
4163 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4165 #ifdef VARIABLE_RICE_BITS
4166 const unsigned rice_parameter_estimate = rice_parameter-1;
4167 partition_bits = (1+rice_parameter) * residual_samples;
4171 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4172 for(i = 0; i < residual_samples; i++) {
4173 #ifdef VARIABLE_RICE_BITS
4174 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
4176 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
4179 #ifndef NO_RICE_SEARCH
4180 if(partition_bits < best_partition_bits) {
4181 best_rice_parameter = rice_parameter;
4182 best_partition_bits = partition_bits;
4186 parameters[0] = best_rice_parameter;
4187 bits_ += best_partition_bits;
4190 unsigned partition, residual_sample, save_residual_sample, partition_sample;
4191 unsigned partition_samples;
4192 FLAC__uint64 mean, k;
4193 const unsigned partitions = 1u << partition_order;
4194 for(partition = residual_sample = 0; partition < partitions; partition++) {
4195 partition_samples = (residual_samples+predictor_order) >> partition_order;
4196 if(partition == 0) {
4197 if(partition_samples <= predictor_order)
4200 partition_samples -= predictor_order;
4203 save_residual_sample = residual_sample;
4204 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++)
4205 mean += abs_residual[residual_sample];
4206 residual_sample = save_residual_sample;
4207 /* we are basically calculating the size in bits of the
4208 * average residual magnitude in the partition:
4209 * rice_parameter = floor(log2(mean/partition_samples))
4210 * 'mean' is not a good name for the variable, it is
4211 * actually the sum of magnitudes of all residual values
4212 * in the partition, so the actual mean is
4213 * mean/partition_samples
4215 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4217 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4218 #ifdef DEBUG_VERBOSE
4219 fprintf(stderr, "clipping rice_parameter (%u -> %u) @3\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4221 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4224 #ifndef NO_RICE_SEARCH
4225 if(rice_parameter_search_dist) {
4226 if(rice_parameter < rice_parameter_search_dist)
4227 min_rice_parameter = 0;
4229 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4230 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4231 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4232 #ifdef DEBUG_VERBOSE
4233 fprintf(stderr, "clipping rice_parameter (%u -> %u) @4\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4235 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4239 min_rice_parameter = max_rice_parameter = rice_parameter;
4241 best_partition_bits = 0xffffffff;
4242 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4244 #ifdef VARIABLE_RICE_BITS
4245 const unsigned rice_parameter_estimate = rice_parameter-1;
4246 partition_bits = (1+rice_parameter) * partition_samples;
4250 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4251 save_residual_sample = residual_sample;
4252 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
4253 #ifdef VARIABLE_RICE_BITS
4254 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
4256 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
4259 #ifndef NO_RICE_SEARCH
4260 if(rice_parameter != max_rice_parameter)
4261 residual_sample = save_residual_sample;
4262 if(partition_bits < best_partition_bits) {
4263 best_rice_parameter = rice_parameter;
4264 best_partition_bits = partition_bits;
4268 parameters[partition] = best_rice_parameter;
4269 bits_ += best_partition_bits;
4277 #ifdef DONT_ESTIMATE_RICE_BITS
4278 FLAC__bool set_partitioned_rice_with_precompute_(
4279 const FLAC__int32 residual[],
4280 const FLAC__uint64 abs_residual_partition_sums[],
4281 const unsigned raw_bits_per_partition[],
4282 const unsigned residual_samples,
4283 const unsigned predictor_order,
4284 const unsigned suggested_rice_parameter,
4285 const unsigned rice_parameter_search_dist,
4286 const unsigned partition_order,
4287 const FLAC__bool search_for_escapes,
4288 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4292 FLAC__bool set_partitioned_rice_with_precompute_(
4293 const FLAC__uint32 abs_residual[],
4294 const FLAC__uint64 abs_residual_partition_sums[],
4295 const unsigned raw_bits_per_partition[],
4296 const unsigned residual_samples,
4297 const unsigned predictor_order,
4298 const unsigned suggested_rice_parameter,
4299 const unsigned rice_parameter_search_dist,
4300 const unsigned partition_order,
4301 const FLAC__bool search_for_escapes,
4302 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4307 unsigned rice_parameter, partition_bits;
4308 #ifndef NO_RICE_SEARCH
4309 unsigned best_partition_bits;
4310 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
4313 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
4314 unsigned *parameters, *raw_bits;
4316 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
4318 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
4319 parameters = partitioned_rice_contents->parameters;
4320 raw_bits = partitioned_rice_contents->raw_bits;
4322 if(partition_order == 0) {
4325 #ifndef NO_RICE_SEARCH
4326 if(rice_parameter_search_dist) {
4327 if(suggested_rice_parameter < rice_parameter_search_dist)
4328 min_rice_parameter = 0;
4330 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
4331 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
4332 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4333 #ifdef DEBUG_VERBOSE
4334 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4336 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4340 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
4342 best_partition_bits = 0xffffffff;
4343 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4345 #ifdef VARIABLE_RICE_BITS
4346 const unsigned rice_parameter_estimate = rice_parameter-1;
4347 partition_bits = (1+rice_parameter) * residual_samples;
4351 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4352 for(i = 0; i < residual_samples; i++) {
4353 #ifdef VARIABLE_RICE_BITS
4354 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
4356 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
4359 #ifndef NO_RICE_SEARCH
4360 if(partition_bits < best_partition_bits) {
4361 best_rice_parameter = rice_parameter;
4362 best_partition_bits = partition_bits;
4366 if(search_for_escapes) {
4367 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
4368 if(flat_bits <= best_partition_bits) {
4369 raw_bits[0] = raw_bits_per_partition[0];
4370 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4371 best_partition_bits = flat_bits;
4374 parameters[0] = best_rice_parameter;
4375 bits_ += best_partition_bits;
4378 unsigned partition, residual_sample, save_residual_sample, partition_sample;
4379 unsigned partition_samples;
4380 FLAC__uint64 mean, k;
4381 const unsigned partitions = 1u << partition_order;
4382 for(partition = residual_sample = 0; partition < partitions; partition++) {
4383 partition_samples = (residual_samples+predictor_order) >> partition_order;
4384 if(partition == 0) {
4385 if(partition_samples <= predictor_order)
4388 partition_samples -= predictor_order;
4390 mean = abs_residual_partition_sums[partition];
4391 /* we are basically calculating the size in bits of the
4392 * average residual magnitude in the partition:
4393 * rice_parameter = floor(log2(mean/partition_samples))
4394 * 'mean' is not a good name for the variable, it is
4395 * actually the sum of magnitudes of all residual values
4396 * in the partition, so the actual mean is
4397 * mean/partition_samples
4399 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4401 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4402 #ifdef DEBUG_VERBOSE
4403 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4405 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4408 #ifndef NO_RICE_SEARCH
4409 if(rice_parameter_search_dist) {
4410 if(rice_parameter < rice_parameter_search_dist)
4411 min_rice_parameter = 0;
4413 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4414 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4415 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4416 #ifdef DEBUG_VERBOSE
4417 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4419 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4423 min_rice_parameter = max_rice_parameter = rice_parameter;
4425 best_partition_bits = 0xffffffff;
4426 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4428 #ifdef VARIABLE_RICE_BITS
4429 const unsigned rice_parameter_estimate = rice_parameter-1;
4430 partition_bits = (1+rice_parameter) * partition_samples;
4434 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4435 save_residual_sample = residual_sample;
4436 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
4437 #ifdef VARIABLE_RICE_BITS
4438 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
4440 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
4443 #ifndef NO_RICE_SEARCH
4444 if(rice_parameter != max_rice_parameter)
4445 residual_sample = save_residual_sample;
4446 if(partition_bits < best_partition_bits) {
4447 best_rice_parameter = rice_parameter;
4448 best_partition_bits = partition_bits;
4452 if(search_for_escapes) {
4453 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
4454 if(flat_bits <= best_partition_bits) {
4455 raw_bits[partition] = raw_bits_per_partition[partition];
4456 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4457 best_partition_bits = flat_bits;
4460 parameters[partition] = best_rice_parameter;
4461 bits_ += best_partition_bits;
4469 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4474 for(i = 0; i < samples && !(x&1); i++)
4481 for(shift = 0; !(x&1); shift++)
4486 for(i = 0; i < samples; i++)
4487 signal[i] >>= shift;
4493 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4497 for(channel = 0; channel < channels; channel++)
4498 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4500 fifo->tail += wide_samples;
4502 FLAC__ASSERT(fifo->tail <= fifo->size);
4505 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4508 unsigned sample, wide_sample;
4509 unsigned tail = fifo->tail;
4511 sample = input_offset * channels;
4512 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4513 for(channel = 0; channel < channels; channel++)
4514 fifo->data[channel][tail] = input[sample++];
4519 FLAC__ASSERT(fifo->tail <= fifo->size);
4522 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4524 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4525 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4528 if(encoder->private_->verify.needs_magic_hack) {
4529 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4530 *bytes = FLAC__STREAM_SYNC_LENGTH;
4531 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4532 encoder->private_->verify.needs_magic_hack = false;
4535 if(encoded_bytes == 0) {
4537 * If we get here, a FIFO underflow has occurred,
4538 * which means there is a bug somewhere.
4541 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4543 else if(encoded_bytes < *bytes)
4544 *bytes = encoded_bytes;
4545 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4546 encoder->private_->verify.output.data += *bytes;
4547 encoder->private_->verify.output.bytes -= *bytes;
4550 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4553 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4555 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4557 const unsigned channels = frame->header.channels;
4558 const unsigned blocksize = frame->header.blocksize;
4559 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4563 for(channel = 0; channel < channels; channel++) {
4564 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4565 unsigned i, sample = 0;
4566 FLAC__int32 expect = 0, got = 0;
4568 for(i = 0; i < blocksize; i++) {
4569 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4571 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4572 got = (FLAC__int32)buffer[channel][i];
4576 FLAC__ASSERT(i < blocksize);
4577 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4578 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4579 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4580 encoder->private_->verify.error_stats.channel = channel;
4581 encoder->private_->verify.error_stats.sample = sample;
4582 encoder->private_->verify.error_stats.expected = expect;
4583 encoder->private_->verify.error_stats.got = got;
4584 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4585 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4588 /* dequeue the frame from the fifo */
4589 encoder->private_->verify.input_fifo.tail -= blocksize;
4590 FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
4591 for(channel = 0; channel < channels; channel++)
4592 memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail * sizeof(encoder->private_->verify.input_fifo.data[0][0]));
4593 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4596 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4598 (void)decoder, (void)metadata, (void)client_data;
4601 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4603 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4604 (void)decoder, (void)status;
4605 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4608 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4612 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4614 if (feof(encoder->private_->file))
4615 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4616 else if (ferror(encoder->private_->file))
4617 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4619 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4622 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4626 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
4627 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4629 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4632 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4638 offset = ftello(encoder->private_->file);
4641 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4644 *absolute_byte_offset = (FLAC__uint64)offset;
4645 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4649 #ifdef FLAC__VALGRIND_TESTING
4650 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4652 size_t ret = fwrite(ptr, size, nmemb, stream);
4658 #define local__fwrite fwrite
4661 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4663 (void)client_data, (void)current_frame;
4665 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4666 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4668 /* We would like to be able to use 'samples > 0' in the
4669 * clause here but currently because of the nature of our
4670 * Ogg writing implementation, 'samples' is always 0 (see
4671 * ogg_encoder_aspect.c). The downside is extra progress
4674 encoder->private_->is_ogg? true :
4679 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4680 * because at this point in the callback chain, the stats
4681 * have not been updated. Only after we return and control
4682 * gets back to write_frame_() are the stats updated
4684 encoder->private_->progress_callback(encoder, encoder->private_->bytes_written+bytes, encoder->private_->samples_written+samples, encoder->private_->frames_written+(samples?1:0), encoder->private_->total_frames_estimate, encoder->private_->client_data);
4686 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4689 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4693 * This will forcibly set stdout to binary mode (for OSes that require it)
4695 FILE *get_binary_stdout_()
4697 /* if something breaks here it is probably due to the presence or
4698 * absence of an underscore before the identifiers 'setmode',
4699 * 'fileno', and/or 'O_BINARY'; check your system header files.
4701 #if defined _MSC_VER || defined __MINGW32__
4702 _setmode(_fileno(stdout), _O_BINARY);
4703 #elif defined __CYGWIN__
4704 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4705 setmode(_fileno(stdout), _O_BINARY);
4706 #elif defined __EMX__
4707 setmode(fileno(stdout), O_BINARY);