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 __MINGW32__
50 #if _MSC_VER <= 1200 /* @@@ [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"
70 #include "private/stream_encoder_framing.h"
71 #include "private/window.h"
76 #define min(x,y) ((x)<(y)?(x):(y))
81 #define max(x,y) ((x)>(y)?(x):(y))
84 FLAC__int32 *data[FLAC__MAX_CHANNELS];
85 unsigned size; /* of each data[] in samples */
90 const FLAC__byte *data;
97 ENCODER_IN_METADATA = 1,
101 static struct CompressionLevels {
102 FLAC__bool do_mid_side_stereo;
103 FLAC__bool loose_mid_side_stereo;
104 const char *apodization;
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, "tukey(0.5)", 0, 0, false, false, false, 2, 2, 0 },
115 { true , true , "tukey(0.5)", 0, 0, false, false, false, 2, 2, 0 },
116 { true , false, "tukey(0.5)", 0, 0, false, false, false, 0, 3, 0 },
117 { false, false, "tukey(0.5)", 6, 0, false, false, false, 3, 3, 0 },
118 { true , true , "tukey(0.5)", 8, 0, false, false, false, 3, 3, 0 },
119 { true , false, "tukey(0.5)", 8, 0, false, false, false, 3, 3, 0 },
120 { true , false, "tukey(0.5)", 8, 0, false, false, false, 0, 4, 0 },
121 { true , false, "tukey(0.5)", 8, 0, false, false, true , 0, 6, 0 },
122 { true , false, "tukey(0.5)", 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);
136 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples);
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);
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 /***********************************************************************
529 * Class constructor/destructor
532 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new()
534 FLAC__StreamEncoder *encoder;
537 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
539 encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
544 encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
545 if(encoder->protected_ == 0) {
550 encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
551 if(encoder->private_ == 0) {
552 free(encoder->protected_);
557 encoder->private_->frame = FLAC__bitbuffer_new();
558 if(encoder->private_->frame == 0) {
559 free(encoder->private_);
560 free(encoder->protected_);
565 encoder->private_->file = 0;
567 set_defaults_(encoder);
569 encoder->private_->is_being_deleted = false;
571 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
572 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
573 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
575 for(i = 0; i < 2; i++) {
576 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
577 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
579 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
580 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
581 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
583 for(i = 0; i < 2; i++) {
584 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
585 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
588 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
589 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
590 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
592 for(i = 0; i < 2; i++) {
593 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
594 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
596 for(i = 0; i < 2; i++)
597 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
599 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
604 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
608 FLAC__ASSERT(0 != encoder);
609 FLAC__ASSERT(0 != encoder->protected_);
610 FLAC__ASSERT(0 != encoder->private_);
611 FLAC__ASSERT(0 != encoder->private_->frame);
613 encoder->private_->is_being_deleted = true;
615 (void)FLAC__stream_encoder_finish(encoder);
617 if(0 != encoder->private_->verify.decoder)
618 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
620 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
621 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
622 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
624 for(i = 0; i < 2; i++) {
625 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
626 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
628 for(i = 0; i < 2; i++)
629 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
631 FLAC__bitbuffer_delete(encoder->private_->frame);
632 free(encoder->private_);
633 free(encoder->protected_);
637 /***********************************************************************
639 * Public class methods
641 ***********************************************************************/
643 static FLAC__StreamEncoderInitStatus init_stream_internal_(
644 FLAC__StreamEncoder *encoder,
645 FLAC__StreamEncoderReadCallback read_callback,
646 FLAC__StreamEncoderWriteCallback write_callback,
647 FLAC__StreamEncoderSeekCallback seek_callback,
648 FLAC__StreamEncoderTellCallback tell_callback,
649 FLAC__StreamEncoderMetadataCallback metadata_callback,
655 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
657 FLAC__ASSERT(0 != encoder);
659 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
660 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
662 #ifndef FLAC__HAS_OGG
664 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
667 if(0 == write_callback || (seek_callback && 0 == tell_callback))
668 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
670 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
671 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
673 if(encoder->protected_->channels != 2) {
674 encoder->protected_->do_mid_side_stereo = false;
675 encoder->protected_->loose_mid_side_stereo = false;
677 else if(!encoder->protected_->do_mid_side_stereo)
678 encoder->protected_->loose_mid_side_stereo = false;
680 if(encoder->protected_->bits_per_sample >= 32)
681 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
683 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
684 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
686 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
687 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
689 if(encoder->protected_->blocksize == 0) {
690 if(encoder->protected_->max_lpc_order == 0)
691 encoder->protected_->blocksize = 1152;
693 encoder->protected_->blocksize = 4608;
696 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
697 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
699 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
700 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
702 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
703 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
705 if(encoder->protected_->qlp_coeff_precision == 0) {
706 if(encoder->protected_->bits_per_sample < 16) {
707 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
708 /* @@@ until then we'll make a guess */
709 encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
711 else if(encoder->protected_->bits_per_sample == 16) {
712 if(encoder->protected_->blocksize <= 192)
713 encoder->protected_->qlp_coeff_precision = 7;
714 else if(encoder->protected_->blocksize <= 384)
715 encoder->protected_->qlp_coeff_precision = 8;
716 else if(encoder->protected_->blocksize <= 576)
717 encoder->protected_->qlp_coeff_precision = 9;
718 else if(encoder->protected_->blocksize <= 1152)
719 encoder->protected_->qlp_coeff_precision = 10;
720 else if(encoder->protected_->blocksize <= 2304)
721 encoder->protected_->qlp_coeff_precision = 11;
722 else if(encoder->protected_->blocksize <= 4608)
723 encoder->protected_->qlp_coeff_precision = 12;
725 encoder->protected_->qlp_coeff_precision = 13;
728 if(encoder->protected_->blocksize <= 384)
729 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
730 else if(encoder->protected_->blocksize <= 1152)
731 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
733 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
735 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
737 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
738 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
740 if(encoder->protected_->streamable_subset) {
742 encoder->protected_->blocksize != 192 &&
743 encoder->protected_->blocksize != 576 &&
744 encoder->protected_->blocksize != 1152 &&
745 encoder->protected_->blocksize != 2304 &&
746 encoder->protected_->blocksize != 4608 &&
747 encoder->protected_->blocksize != 256 &&
748 encoder->protected_->blocksize != 512 &&
749 encoder->protected_->blocksize != 1024 &&
750 encoder->protected_->blocksize != 2048 &&
751 encoder->protected_->blocksize != 4096 &&
752 encoder->protected_->blocksize != 8192 &&
753 encoder->protected_->blocksize != 16384
755 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
757 encoder->protected_->sample_rate != 8000 &&
758 encoder->protected_->sample_rate != 16000 &&
759 encoder->protected_->sample_rate != 22050 &&
760 encoder->protected_->sample_rate != 24000 &&
761 encoder->protected_->sample_rate != 32000 &&
762 encoder->protected_->sample_rate != 44100 &&
763 encoder->protected_->sample_rate != 48000 &&
764 encoder->protected_->sample_rate != 96000
766 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
768 encoder->protected_->bits_per_sample != 8 &&
769 encoder->protected_->bits_per_sample != 12 &&
770 encoder->protected_->bits_per_sample != 16 &&
771 encoder->protected_->bits_per_sample != 20 &&
772 encoder->protected_->bits_per_sample != 24
774 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
775 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
776 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
778 encoder->protected_->sample_rate <= 48000 &&
780 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
781 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
784 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
788 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
789 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
790 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
791 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
794 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
795 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
797 for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
798 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
799 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
801 encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
802 encoder->protected_->metadata[0] = vc;
808 /* keep track of any SEEKTABLE block */
809 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
811 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
812 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
813 encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
814 break; /* take only the first one */
819 /* validate metadata */
820 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
821 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
822 metadata_has_seektable = false;
823 metadata_has_vorbis_comment = false;
824 metadata_picture_has_type1 = false;
825 metadata_picture_has_type2 = false;
826 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
827 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
828 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
829 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
830 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
831 if(metadata_has_seektable) /* only one is allowed */
832 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
833 metadata_has_seektable = true;
834 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
835 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
837 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
838 if(metadata_has_vorbis_comment) /* only one is allowed */
839 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
840 metadata_has_vorbis_comment = true;
842 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
843 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
844 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
846 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
847 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
848 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
849 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
850 if(metadata_picture_has_type1) /* there should only be 1 per stream */
851 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
852 metadata_picture_has_type1 = true;
853 /* standard icon must be 32x32 pixel PNG */
855 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
857 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
858 m->data.picture.width != 32 ||
859 m->data.picture.height != 32
862 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
864 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
865 if(metadata_picture_has_type2) /* there should only be 1 per stream */
866 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
867 metadata_picture_has_type2 = true;
872 encoder->private_->input_capacity = 0;
873 for(i = 0; i < encoder->protected_->channels; i++) {
874 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
875 #ifndef FLAC__INTEGER_ONLY_LIBRARY
876 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
879 for(i = 0; i < 2; i++) {
880 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
881 #ifndef FLAC__INTEGER_ONLY_LIBRARY
882 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
885 #ifndef FLAC__INTEGER_ONLY_LIBRARY
886 for(i = 0; i < encoder->protected_->num_apodizations; i++)
887 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
888 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
890 for(i = 0; i < encoder->protected_->channels; i++) {
891 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
892 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
893 encoder->private_->best_subframe[i] = 0;
895 for(i = 0; i < 2; i++) {
896 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
897 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
898 encoder->private_->best_subframe_mid_side[i] = 0;
900 encoder->private_->abs_residual_unaligned = encoder->private_->abs_residual = 0;
901 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
902 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
903 #ifndef FLAC__INTEGER_ONLY_LIBRARY
904 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
906 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
907 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
908 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
909 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
910 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
911 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
912 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);
914 if(encoder->private_->loose_mid_side_stereo_frames == 0)
915 encoder->private_->loose_mid_side_stereo_frames = 1;
916 encoder->private_->loose_mid_side_stereo_frame_count = 0;
917 encoder->private_->current_sample_number = 0;
918 encoder->private_->current_frame_number = 0;
920 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
921 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? */
922 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
925 * get the CPU info and set the function pointers
927 FLAC__cpu_info(&encoder->private_->cpuinfo);
928 /* first default to the non-asm routines */
929 #ifndef FLAC__INTEGER_ONLY_LIBRARY
930 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
932 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
933 #ifndef FLAC__INTEGER_ONLY_LIBRARY
934 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
935 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
936 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
938 /* now override with asm where appropriate */
939 #ifndef FLAC__INTEGER_ONLY_LIBRARY
940 # ifndef FLAC__NO_ASM
941 if(encoder->private_->cpuinfo.use_asm) {
942 # ifdef FLAC__CPU_IA32
943 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
944 # ifdef FLAC__HAS_NASM
946 if(encoder->private_->cpuinfo.data.ia32.sse) {
947 if(encoder->protected_->max_lpc_order < 4)
948 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
949 else if(encoder->protected_->max_lpc_order < 8)
950 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
951 else if(encoder->protected_->max_lpc_order < 12)
952 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
954 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
957 # endif /* FLAC__SSE_OS */
958 if(encoder->private_->cpuinfo.data.ia32._3dnow)
959 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
961 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
962 if(encoder->private_->cpuinfo.data.ia32.mmx) {
963 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
964 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
967 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
968 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
970 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
971 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
972 # endif /* FLAC__HAS_NASM */
973 # endif /* FLAC__CPU_IA32 */
975 # endif /* !FLAC__NO_ASM */
976 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
977 /* finally override based on wide-ness if necessary */
978 if(encoder->private_->use_wide_by_block) {
979 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
982 /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */
983 encoder->private_->precompute_partition_sums = (encoder->protected_->max_residual_partition_order > encoder->protected_->min_residual_partition_order) || encoder->protected_->do_escape_coding;
985 /* set state to OK; from here on, errors are fatal and we'll override the state then */
986 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
989 encoder->private_->is_ogg = is_ogg;
990 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
991 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
992 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
996 encoder->private_->read_callback = read_callback;
997 encoder->private_->write_callback = write_callback;
998 encoder->private_->seek_callback = seek_callback;
999 encoder->private_->tell_callback = tell_callback;
1000 encoder->private_->metadata_callback = metadata_callback;
1001 encoder->private_->client_data = client_data;
1003 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
1004 /* the above function sets the state for us in case of an error */
1005 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1008 if(!FLAC__bitbuffer_init(encoder->private_->frame)) {
1009 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1010 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1014 * Set up the verify stuff if necessary
1016 if(encoder->protected_->verify) {
1018 * First, set up the fifo which will hold the
1019 * original signal to compare against
1021 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize;
1022 for(i = 0; i < encoder->protected_->channels; i++) {
1023 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size))) {
1024 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1025 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1028 encoder->private_->verify.input_fifo.tail = 0;
1031 * Now set up a stream decoder for verification
1033 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
1034 if(0 == encoder->private_->verify.decoder) {
1035 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1036 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1039 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) {
1040 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1041 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1044 encoder->private_->verify.error_stats.absolute_sample = 0;
1045 encoder->private_->verify.error_stats.frame_number = 0;
1046 encoder->private_->verify.error_stats.channel = 0;
1047 encoder->private_->verify.error_stats.sample = 0;
1048 encoder->private_->verify.error_stats.expected = 0;
1049 encoder->private_->verify.error_stats.got = 0;
1052 * These must be done before we write any metadata, because that
1053 * calls the write_callback, which uses these values.
1055 encoder->private_->first_seekpoint_to_check = 0;
1056 encoder->private_->samples_written = 0;
1057 encoder->protected_->streaminfo_offset = 0;
1058 encoder->protected_->seektable_offset = 0;
1059 encoder->protected_->audio_offset = 0;
1062 * write the stream header
1064 if(encoder->protected_->verify)
1065 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1066 if(!FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1067 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1068 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1070 if(!write_bitbuffer_(encoder, 0)) {
1071 /* the above function sets the state for us in case of an error */
1072 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1076 * write the STREAMINFO metadata block
1078 if(encoder->protected_->verify)
1079 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1080 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1081 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1082 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1083 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1084 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1085 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1086 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1087 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1088 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1089 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1090 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1091 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1092 FLAC__MD5Init(&encoder->private_->md5context);
1093 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1094 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1095 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1097 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1098 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1099 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1101 if(!write_bitbuffer_(encoder, 0)) {
1102 /* the above function sets the state for us in case of an error */
1103 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1107 * Now that the STREAMINFO block is written, we can init this to an
1108 * absurdly-high value...
1110 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1111 /* ... and clear this to 0 */
1112 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1115 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1116 * if not, we will write an empty one (FLAC__add_metadata_block()
1117 * automatically supplies the vendor string).
1119 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1120 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1121 * true it will have already insured that the metadata list is properly
1124 if(!metadata_has_vorbis_comment) {
1125 FLAC__StreamMetadata vorbis_comment;
1126 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1127 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1128 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1129 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1130 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1131 vorbis_comment.data.vorbis_comment.num_comments = 0;
1132 vorbis_comment.data.vorbis_comment.comments = 0;
1133 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1134 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1135 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1137 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1138 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1139 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1141 if(!write_bitbuffer_(encoder, 0)) {
1142 /* the above function sets the state for us in case of an error */
1143 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1148 * write the user's metadata blocks
1150 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1151 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1152 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1153 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1154 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1156 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1157 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1158 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1160 if(!write_bitbuffer_(encoder, 0)) {
1161 /* the above function sets the state for us in case of an error */
1162 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1166 /* now that all the metadata is written, we save the stream offset */
1167 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 */
1168 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1169 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1172 if(encoder->protected_->verify)
1173 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1175 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1178 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1179 FLAC__StreamEncoder *encoder,
1180 FLAC__StreamEncoderWriteCallback write_callback,
1181 FLAC__StreamEncoderSeekCallback seek_callback,
1182 FLAC__StreamEncoderTellCallback tell_callback,
1183 FLAC__StreamEncoderMetadataCallback metadata_callback,
1187 return init_stream_internal_(
1189 /*read_callback=*/0,
1199 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1200 FLAC__StreamEncoder *encoder,
1201 FLAC__StreamEncoderReadCallback read_callback,
1202 FLAC__StreamEncoderWriteCallback write_callback,
1203 FLAC__StreamEncoderSeekCallback seek_callback,
1204 FLAC__StreamEncoderTellCallback tell_callback,
1205 FLAC__StreamEncoderMetadataCallback metadata_callback,
1209 return init_stream_internal_(
1221 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1222 FLAC__StreamEncoder *encoder,
1224 FLAC__StreamEncoderProgressCallback progress_callback,
1229 FLAC__StreamEncoderInitStatus init_status;
1231 FLAC__ASSERT(0 != encoder);
1232 FLAC__ASSERT(0 != file);
1234 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1235 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1237 /* double protection */
1239 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1240 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1244 * To make sure that our file does not go unclosed after an error, we
1245 * must assign the FILE pointer before any further error can occur in
1249 file = get_binary_stdout_(); /* just to be safe */
1251 encoder->private_->file = file;
1253 encoder->private_->progress_callback = progress_callback;
1254 encoder->private_->bytes_written = 0;
1255 encoder->private_->samples_written = 0;
1256 encoder->private_->frames_written = 0;
1258 init_status = init_stream_internal_(
1260 is_ogg? file_read_callback_ : 0,
1261 file_write_callback_,
1262 file_seek_callback_,
1263 file_tell_callback_,
1264 /*metadata_callback=*/0,
1268 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1269 /* the above function sets the state for us in case of an error */
1274 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1276 FLAC__ASSERT(blocksize != 0);
1277 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1283 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1284 FLAC__StreamEncoder *encoder,
1286 FLAC__StreamEncoderProgressCallback progress_callback,
1290 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1293 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1294 FLAC__StreamEncoder *encoder,
1296 FLAC__StreamEncoderProgressCallback progress_callback,
1300 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1303 static FLAC__StreamEncoderInitStatus init_file_internal_(
1304 FLAC__StreamEncoder *encoder,
1305 const char *filename,
1306 FLAC__StreamEncoderProgressCallback progress_callback,
1313 FLAC__ASSERT(0 != encoder);
1316 * To make sure that our file does not go unclosed after an error, we
1317 * have to do the same entrance checks here that are later performed
1318 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1320 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1321 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1323 file = filename? fopen(filename, "w+b") : stdout;
1326 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1327 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1330 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1333 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
1334 FLAC__StreamEncoder *encoder,
1335 const char *filename,
1336 FLAC__StreamEncoderProgressCallback progress_callback,
1340 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
1343 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1344 FLAC__StreamEncoder *encoder,
1345 const char *filename,
1346 FLAC__StreamEncoderProgressCallback progress_callback,
1350 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1353 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1355 FLAC__bool verify_mismatch = false;
1357 FLAC__ASSERT(0 != encoder);
1358 FLAC__ASSERT(0 != encoder->private_);
1359 FLAC__ASSERT(0 != encoder->protected_);
1361 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1364 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1365 if(encoder->private_->current_sample_number != 0) {
1366 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1367 if(!process_frame_(encoder, /*is_fractional_block=*/true) && encoder->protected_->state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
1368 verify_mismatch = true;
1372 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1374 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1375 if(encoder->private_->seek_callback) {
1377 if(encoder->private_->is_ogg)
1378 update_ogg_metadata_(encoder);
1381 update_metadata_(encoder);
1383 if(encoder->private_->metadata_callback)
1384 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1387 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder))
1388 verify_mismatch = true;
1390 if(0 != encoder->private_->file) {
1391 if(encoder->private_->file != stdout)
1392 fclose(encoder->private_->file);
1393 encoder->private_->file = 0;
1397 if(encoder->private_->is_ogg)
1398 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1402 set_defaults_(encoder);
1404 /* change the state to uninitialized unless there was a verify mismatch */
1406 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1408 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1410 return !verify_mismatch;
1413 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1415 FLAC__ASSERT(0 != encoder);
1416 FLAC__ASSERT(0 != encoder->private_);
1417 FLAC__ASSERT(0 != encoder->protected_);
1418 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1420 #ifdef FLAC__HAS_OGG
1421 /* can't check encoder->private_->is_ogg since that's not set until init time */
1422 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1430 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1432 FLAC__ASSERT(0 != encoder);
1433 FLAC__ASSERT(0 != encoder->private_);
1434 FLAC__ASSERT(0 != encoder->protected_);
1435 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1437 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1438 encoder->protected_->verify = value;
1443 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1445 FLAC__ASSERT(0 != encoder);
1446 FLAC__ASSERT(0 != encoder->private_);
1447 FLAC__ASSERT(0 != encoder->protected_);
1448 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1450 encoder->protected_->streamable_subset = value;
1454 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1456 FLAC__ASSERT(0 != encoder);
1457 FLAC__ASSERT(0 != encoder->private_);
1458 FLAC__ASSERT(0 != encoder->protected_);
1459 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1461 encoder->protected_->channels = value;
1465 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1467 FLAC__ASSERT(0 != encoder);
1468 FLAC__ASSERT(0 != encoder->private_);
1469 FLAC__ASSERT(0 != encoder->protected_);
1470 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1472 encoder->protected_->bits_per_sample = value;
1476 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1478 FLAC__ASSERT(0 != encoder);
1479 FLAC__ASSERT(0 != encoder->private_);
1480 FLAC__ASSERT(0 != encoder->protected_);
1481 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1483 encoder->protected_->sample_rate = value;
1487 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1489 FLAC__bool ok = true;
1490 FLAC__ASSERT(0 != encoder);
1491 FLAC__ASSERT(0 != encoder->private_);
1492 FLAC__ASSERT(0 != encoder->protected_);
1493 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1495 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1496 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1497 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1498 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1499 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1500 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1501 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1502 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1503 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1504 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1505 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1506 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1507 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1511 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1513 FLAC__ASSERT(0 != encoder);
1514 FLAC__ASSERT(0 != encoder->private_);
1515 FLAC__ASSERT(0 != encoder->protected_);
1516 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1518 encoder->protected_->blocksize = value;
1522 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1524 FLAC__ASSERT(0 != encoder);
1525 FLAC__ASSERT(0 != encoder->private_);
1526 FLAC__ASSERT(0 != encoder->protected_);
1527 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1529 encoder->protected_->do_mid_side_stereo = value;
1533 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1535 FLAC__ASSERT(0 != encoder);
1536 FLAC__ASSERT(0 != encoder->private_);
1537 FLAC__ASSERT(0 != encoder->protected_);
1538 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1540 encoder->protected_->loose_mid_side_stereo = value;
1544 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1546 FLAC__ASSERT(0 != encoder);
1547 FLAC__ASSERT(0 != encoder->private_);
1548 FLAC__ASSERT(0 != encoder->protected_);
1549 FLAC__ASSERT(0 != specification);
1550 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1552 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1553 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1555 encoder->protected_->num_apodizations = 0;
1557 const char *s = strchr(specification, ';');
1558 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1559 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1560 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1561 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1562 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1563 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1564 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1565 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1566 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1567 else if(n==6 && 0 == strncmp("connes" , specification, n))
1568 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1569 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1570 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1571 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1572 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1573 if (stddev > 0.0 && stddev <= 0.5) {
1574 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1575 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1578 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1579 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1580 else if(n==4 && 0 == strncmp("hann" , specification, n))
1581 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1582 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1583 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1584 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1585 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1586 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1587 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1588 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1589 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1590 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1591 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1592 if (p >= 0.0 && p <= 1.0) {
1593 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1594 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1597 else if(n==5 && 0 == strncmp("welch" , specification, n))
1598 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1599 if (encoder->protected_->num_apodizations == 32)
1602 specification = s+1;
1606 if(encoder->protected_->num_apodizations == 0) {
1607 encoder->protected_->num_apodizations = 1;
1608 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1609 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1615 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1617 FLAC__ASSERT(0 != encoder);
1618 FLAC__ASSERT(0 != encoder->private_);
1619 FLAC__ASSERT(0 != encoder->protected_);
1620 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1622 encoder->protected_->max_lpc_order = value;
1626 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1628 FLAC__ASSERT(0 != encoder);
1629 FLAC__ASSERT(0 != encoder->private_);
1630 FLAC__ASSERT(0 != encoder->protected_);
1631 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1633 encoder->protected_->qlp_coeff_precision = value;
1637 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1639 FLAC__ASSERT(0 != encoder);
1640 FLAC__ASSERT(0 != encoder->private_);
1641 FLAC__ASSERT(0 != encoder->protected_);
1642 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1644 encoder->protected_->do_qlp_coeff_prec_search = value;
1648 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1650 FLAC__ASSERT(0 != encoder);
1651 FLAC__ASSERT(0 != encoder->private_);
1652 FLAC__ASSERT(0 != encoder->protected_);
1653 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1656 /*@@@ deprecated: */
1657 encoder->protected_->do_escape_coding = value;
1664 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1666 FLAC__ASSERT(0 != encoder);
1667 FLAC__ASSERT(0 != encoder->private_);
1668 FLAC__ASSERT(0 != encoder->protected_);
1669 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1671 encoder->protected_->do_exhaustive_model_search = value;
1675 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1677 FLAC__ASSERT(0 != encoder);
1678 FLAC__ASSERT(0 != encoder->private_);
1679 FLAC__ASSERT(0 != encoder->protected_);
1680 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1682 encoder->protected_->min_residual_partition_order = value;
1686 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1688 FLAC__ASSERT(0 != encoder);
1689 FLAC__ASSERT(0 != encoder->private_);
1690 FLAC__ASSERT(0 != encoder->protected_);
1691 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1693 encoder->protected_->max_residual_partition_order = value;
1697 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1699 FLAC__ASSERT(0 != encoder);
1700 FLAC__ASSERT(0 != encoder->private_);
1701 FLAC__ASSERT(0 != encoder->protected_);
1702 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1705 /*@@@ deprecated: */
1706 encoder->protected_->rice_parameter_search_dist = value;
1713 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1715 FLAC__ASSERT(0 != encoder);
1716 FLAC__ASSERT(0 != encoder->private_);
1717 FLAC__ASSERT(0 != encoder->protected_);
1718 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1720 encoder->protected_->total_samples_estimate = value;
1724 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1726 FLAC__ASSERT(0 != encoder);
1727 FLAC__ASSERT(0 != encoder->private_);
1728 FLAC__ASSERT(0 != encoder->protected_);
1729 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1731 encoder->protected_->metadata = metadata;
1732 encoder->protected_->num_metadata_blocks = num_blocks;
1734 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1741 * These three functions are not static, but not publically exposed in
1742 * include/FLAC/ either. They are used by the test suite.
1744 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1746 FLAC__ASSERT(0 != encoder);
1747 FLAC__ASSERT(0 != encoder->private_);
1748 FLAC__ASSERT(0 != encoder->protected_);
1749 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1751 encoder->private_->disable_constant_subframes = value;
1755 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1757 FLAC__ASSERT(0 != encoder);
1758 FLAC__ASSERT(0 != encoder->private_);
1759 FLAC__ASSERT(0 != encoder->protected_);
1760 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1762 encoder->private_->disable_fixed_subframes = value;
1766 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1768 FLAC__ASSERT(0 != encoder);
1769 FLAC__ASSERT(0 != encoder->private_);
1770 FLAC__ASSERT(0 != encoder->protected_);
1771 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1773 encoder->private_->disable_verbatim_subframes = value;
1777 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1779 FLAC__ASSERT(0 != encoder);
1780 FLAC__ASSERT(0 != encoder->private_);
1781 FLAC__ASSERT(0 != encoder->protected_);
1782 return encoder->protected_->state;
1785 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1787 FLAC__ASSERT(0 != encoder);
1788 FLAC__ASSERT(0 != encoder->private_);
1789 FLAC__ASSERT(0 != encoder->protected_);
1790 if(encoder->protected_->verify)
1791 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1793 return FLAC__STREAM_DECODER_UNINITIALIZED;
1796 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1798 FLAC__ASSERT(0 != encoder);
1799 FLAC__ASSERT(0 != encoder->private_);
1800 FLAC__ASSERT(0 != encoder->protected_);
1801 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1802 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1804 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1807 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)
1809 FLAC__ASSERT(0 != encoder);
1810 FLAC__ASSERT(0 != encoder->private_);
1811 FLAC__ASSERT(0 != encoder->protected_);
1812 if(0 != absolute_sample)
1813 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1814 if(0 != frame_number)
1815 *frame_number = encoder->private_->verify.error_stats.frame_number;
1817 *channel = encoder->private_->verify.error_stats.channel;
1819 *sample = encoder->private_->verify.error_stats.sample;
1821 *expected = encoder->private_->verify.error_stats.expected;
1823 *got = encoder->private_->verify.error_stats.got;
1826 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1828 FLAC__ASSERT(0 != encoder);
1829 FLAC__ASSERT(0 != encoder->private_);
1830 FLAC__ASSERT(0 != encoder->protected_);
1831 return encoder->protected_->verify;
1834 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1836 FLAC__ASSERT(0 != encoder);
1837 FLAC__ASSERT(0 != encoder->private_);
1838 FLAC__ASSERT(0 != encoder->protected_);
1839 return encoder->protected_->streamable_subset;
1842 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1844 FLAC__ASSERT(0 != encoder);
1845 FLAC__ASSERT(0 != encoder->private_);
1846 FLAC__ASSERT(0 != encoder->protected_);
1847 return encoder->protected_->channels;
1850 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1852 FLAC__ASSERT(0 != encoder);
1853 FLAC__ASSERT(0 != encoder->private_);
1854 FLAC__ASSERT(0 != encoder->protected_);
1855 return encoder->protected_->bits_per_sample;
1858 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1860 FLAC__ASSERT(0 != encoder);
1861 FLAC__ASSERT(0 != encoder->private_);
1862 FLAC__ASSERT(0 != encoder->protected_);
1863 return encoder->protected_->sample_rate;
1866 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1868 FLAC__ASSERT(0 != encoder);
1869 FLAC__ASSERT(0 != encoder->private_);
1870 FLAC__ASSERT(0 != encoder->protected_);
1871 return encoder->protected_->blocksize;
1874 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1876 FLAC__ASSERT(0 != encoder);
1877 FLAC__ASSERT(0 != encoder->private_);
1878 FLAC__ASSERT(0 != encoder->protected_);
1879 return encoder->protected_->do_mid_side_stereo;
1882 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1884 FLAC__ASSERT(0 != encoder);
1885 FLAC__ASSERT(0 != encoder->private_);
1886 FLAC__ASSERT(0 != encoder->protected_);
1887 return encoder->protected_->loose_mid_side_stereo;
1890 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1892 FLAC__ASSERT(0 != encoder);
1893 FLAC__ASSERT(0 != encoder->private_);
1894 FLAC__ASSERT(0 != encoder->protected_);
1895 return encoder->protected_->max_lpc_order;
1898 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1900 FLAC__ASSERT(0 != encoder);
1901 FLAC__ASSERT(0 != encoder->private_);
1902 FLAC__ASSERT(0 != encoder->protected_);
1903 return encoder->protected_->qlp_coeff_precision;
1906 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1908 FLAC__ASSERT(0 != encoder);
1909 FLAC__ASSERT(0 != encoder->private_);
1910 FLAC__ASSERT(0 != encoder->protected_);
1911 return encoder->protected_->do_qlp_coeff_prec_search;
1914 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1916 FLAC__ASSERT(0 != encoder);
1917 FLAC__ASSERT(0 != encoder->private_);
1918 FLAC__ASSERT(0 != encoder->protected_);
1919 return encoder->protected_->do_escape_coding;
1922 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1924 FLAC__ASSERT(0 != encoder);
1925 FLAC__ASSERT(0 != encoder->private_);
1926 FLAC__ASSERT(0 != encoder->protected_);
1927 return encoder->protected_->do_exhaustive_model_search;
1930 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1932 FLAC__ASSERT(0 != encoder);
1933 FLAC__ASSERT(0 != encoder->private_);
1934 FLAC__ASSERT(0 != encoder->protected_);
1935 return encoder->protected_->min_residual_partition_order;
1938 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1940 FLAC__ASSERT(0 != encoder);
1941 FLAC__ASSERT(0 != encoder->private_);
1942 FLAC__ASSERT(0 != encoder->protected_);
1943 return encoder->protected_->max_residual_partition_order;
1946 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1948 FLAC__ASSERT(0 != encoder);
1949 FLAC__ASSERT(0 != encoder->private_);
1950 FLAC__ASSERT(0 != encoder->protected_);
1951 return encoder->protected_->rice_parameter_search_dist;
1954 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1956 FLAC__ASSERT(0 != encoder);
1957 FLAC__ASSERT(0 != encoder->private_);
1958 FLAC__ASSERT(0 != encoder->protected_);
1959 return encoder->protected_->total_samples_estimate;
1962 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1964 unsigned i, j, channel;
1965 FLAC__int32 x, mid, side;
1966 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1968 FLAC__ASSERT(0 != encoder);
1969 FLAC__ASSERT(0 != encoder->private_);
1970 FLAC__ASSERT(0 != encoder->protected_);
1971 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1975 * we have several flavors of the same basic loop, optimized for
1976 * different conditions:
1978 if(encoder->protected_->max_lpc_order > 0) {
1979 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
1981 * stereo coding: unroll channel loop
1982 * with LPC: calculate floating point version of signal
1985 if(encoder->protected_->verify)
1986 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1988 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1989 x = mid = side = buffer[0][j];
1990 encoder->private_->integer_signal[0][i] = x;
1991 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1992 encoder->private_->real_signal[0][i] = (FLAC__real)x;
1995 encoder->private_->integer_signal[1][i] = x;
1996 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1997 encoder->private_->real_signal[1][i] = (FLAC__real)x;
2001 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2002 encoder->private_->integer_signal_mid_side[1][i] = side;
2003 encoder->private_->integer_signal_mid_side[0][i] = mid;
2004 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2005 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2006 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2008 encoder->private_->current_sample_number++;
2010 if(i == blocksize) {
2011 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2014 } while(j < samples);
2018 * independent channel coding: buffer each channel in inner loop
2019 * with LPC: calculate floating point version of signal
2022 if(encoder->protected_->verify)
2023 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
2025 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
2026 for(channel = 0; channel < channels; channel++) {
2027 x = buffer[channel][j];
2028 encoder->private_->integer_signal[channel][i] = x;
2029 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2030 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2033 encoder->private_->current_sample_number++;
2035 if(i == blocksize) {
2036 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2039 } while(j < samples);
2043 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2045 * stereo coding: unroll channel loop
2046 * without LPC: no need to calculate floating point version of signal
2049 if(encoder->protected_->verify)
2050 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
2052 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
2053 encoder->private_->integer_signal[0][i] = mid = side = buffer[0][j];
2055 encoder->private_->integer_signal[1][i] = x;
2058 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2059 encoder->private_->integer_signal_mid_side[1][i] = side;
2060 encoder->private_->integer_signal_mid_side[0][i] = mid;
2061 encoder->private_->current_sample_number++;
2063 if(i == blocksize) {
2064 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2067 } while(j < samples);
2071 * independent channel coding: buffer each channel in inner loop
2072 * without LPC: no need to calculate floating point version of signal
2075 if(encoder->protected_->verify)
2076 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
2078 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
2079 for(channel = 0; channel < channels; channel++)
2080 encoder->private_->integer_signal[channel][i] = buffer[channel][j];
2081 encoder->private_->current_sample_number++;
2083 if(i == blocksize) {
2084 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2087 } while(j < samples);
2094 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2096 unsigned i, j, k, channel;
2097 FLAC__int32 x, mid, side;
2098 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2100 FLAC__ASSERT(0 != encoder);
2101 FLAC__ASSERT(0 != encoder->private_);
2102 FLAC__ASSERT(0 != encoder->protected_);
2103 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2107 * we have several flavors of the same basic loop, optimized for
2108 * different conditions:
2110 if(encoder->protected_->max_lpc_order > 0) {
2111 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2113 * stereo coding: unroll channel loop
2114 * with LPC: calculate floating point version of signal
2117 if(encoder->protected_->verify)
2118 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
2120 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
2121 x = mid = side = buffer[k++];
2122 encoder->private_->integer_signal[0][i] = x;
2123 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2124 encoder->private_->real_signal[0][i] = (FLAC__real)x;
2127 encoder->private_->integer_signal[1][i] = x;
2128 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2129 encoder->private_->real_signal[1][i] = (FLAC__real)x;
2133 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2134 encoder->private_->integer_signal_mid_side[1][i] = side;
2135 encoder->private_->integer_signal_mid_side[0][i] = mid;
2136 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2137 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2138 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2140 encoder->private_->current_sample_number++;
2142 if(i == blocksize) {
2143 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2146 } while(j < samples);
2150 * independent channel coding: buffer each channel in inner loop
2151 * with LPC: calculate floating point version of signal
2154 if(encoder->protected_->verify)
2155 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
2157 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
2158 for(channel = 0; channel < channels; channel++) {
2160 encoder->private_->integer_signal[channel][i] = x;
2161 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2162 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2165 encoder->private_->current_sample_number++;
2167 if(i == blocksize) {
2168 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2171 } while(j < samples);
2175 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2177 * stereo coding: unroll channel loop
2178 * without LPC: no need to calculate floating point version of signal
2181 if(encoder->protected_->verify)
2182 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
2184 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
2185 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2187 encoder->private_->integer_signal[1][i] = x;
2190 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2191 encoder->private_->integer_signal_mid_side[1][i] = side;
2192 encoder->private_->integer_signal_mid_side[0][i] = mid;
2193 encoder->private_->current_sample_number++;
2195 if(i == blocksize) {
2196 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2199 } while(j < samples);
2203 * independent channel coding: buffer each channel in inner loop
2204 * without LPC: no need to calculate floating point version of signal
2207 if(encoder->protected_->verify)
2208 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
2210 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
2211 for(channel = 0; channel < channels; channel++)
2212 encoder->private_->integer_signal[channel][i] = buffer[k++];
2213 encoder->private_->current_sample_number++;
2215 if(i == blocksize) {
2216 if(!process_frame_(encoder, /*is_fractional_block=*/false))
2219 } while(j < samples);
2226 /***********************************************************************
2228 * Private class methods
2230 ***********************************************************************/
2232 void set_defaults_(FLAC__StreamEncoder *encoder)
2234 FLAC__ASSERT(0 != encoder);
2236 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2237 encoder->protected_->verify = true;
2239 encoder->protected_->verify = false;
2241 encoder->protected_->streamable_subset = true;
2242 encoder->protected_->do_mid_side_stereo = false;
2243 encoder->protected_->loose_mid_side_stereo = false;
2244 encoder->protected_->channels = 2;
2245 encoder->protected_->bits_per_sample = 16;
2246 encoder->protected_->sample_rate = 44100;
2247 encoder->protected_->blocksize = 0;
2248 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2249 encoder->protected_->num_apodizations = 1;
2250 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2251 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2253 encoder->protected_->max_lpc_order = 0;
2254 encoder->protected_->qlp_coeff_precision = 0;
2255 encoder->protected_->do_qlp_coeff_prec_search = false;
2256 encoder->protected_->do_exhaustive_model_search = false;
2257 encoder->protected_->do_escape_coding = false;
2258 encoder->protected_->min_residual_partition_order = 0;
2259 encoder->protected_->max_residual_partition_order = 0;
2260 encoder->protected_->rice_parameter_search_dist = 0;
2261 encoder->protected_->total_samples_estimate = 0;
2262 encoder->protected_->metadata = 0;
2263 encoder->protected_->num_metadata_blocks = 0;
2265 encoder->private_->seek_table = 0;
2266 encoder->private_->disable_constant_subframes = false;
2267 encoder->private_->disable_fixed_subframes = false;
2268 encoder->private_->disable_verbatim_subframes = false;
2270 encoder->private_->is_ogg = false;
2272 encoder->private_->read_callback = 0;
2273 encoder->private_->write_callback = 0;
2274 encoder->private_->seek_callback = 0;
2275 encoder->private_->tell_callback = 0;
2276 encoder->private_->metadata_callback = 0;
2277 encoder->private_->progress_callback = 0;
2278 encoder->private_->client_data = 0;
2281 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2285 void free_(FLAC__StreamEncoder *encoder)
2287 unsigned i, channel;
2289 FLAC__ASSERT(0 != encoder);
2290 for(i = 0; i < encoder->protected_->channels; i++) {
2291 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2292 free(encoder->private_->integer_signal_unaligned[i]);
2293 encoder->private_->integer_signal_unaligned[i] = 0;
2295 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2296 if(0 != encoder->private_->real_signal_unaligned[i]) {
2297 free(encoder->private_->real_signal_unaligned[i]);
2298 encoder->private_->real_signal_unaligned[i] = 0;
2302 for(i = 0; i < 2; i++) {
2303 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2304 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2305 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2307 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2308 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2309 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2310 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2314 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2315 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2316 if(0 != encoder->private_->window_unaligned[i]) {
2317 free(encoder->private_->window_unaligned[i]);
2318 encoder->private_->window_unaligned[i] = 0;
2321 if(0 != encoder->private_->windowed_signal_unaligned) {
2322 free(encoder->private_->windowed_signal_unaligned);
2323 encoder->private_->windowed_signal_unaligned = 0;
2326 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2327 for(i = 0; i < 2; i++) {
2328 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2329 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2330 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2334 for(channel = 0; channel < 2; channel++) {
2335 for(i = 0; i < 2; i++) {
2336 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2337 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2338 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2342 if(0 != encoder->private_->abs_residual_unaligned) {
2343 free(encoder->private_->abs_residual_unaligned);
2344 encoder->private_->abs_residual_unaligned = 0;
2346 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2347 free(encoder->private_->abs_residual_partition_sums_unaligned);
2348 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2350 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2351 free(encoder->private_->raw_bits_per_partition_unaligned);
2352 encoder->private_->raw_bits_per_partition_unaligned = 0;
2354 if(encoder->protected_->verify) {
2355 for(i = 0; i < encoder->protected_->channels; i++) {
2356 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2357 free(encoder->private_->verify.input_fifo.data[i]);
2358 encoder->private_->verify.input_fifo.data[i] = 0;
2362 FLAC__bitbuffer_free(encoder->private_->frame);
2365 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2368 unsigned i, channel;
2370 FLAC__ASSERT(new_blocksize > 0);
2371 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2372 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2374 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2375 if(new_blocksize <= encoder->private_->input_capacity)
2380 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2381 * requires that the input arrays (in our case the integer signals)
2382 * have a buffer of up to 3 zeroes in front (at negative indices) for
2383 * alignment purposes; we use 4 in front to keep the data well-aligned.
2386 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2387 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2388 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2389 encoder->private_->integer_signal[i] += 4;
2390 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2391 if(encoder->protected_->max_lpc_order > 0)
2392 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2395 for(i = 0; ok && i < 2; i++) {
2396 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]);
2397 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2398 encoder->private_->integer_signal_mid_side[i] += 4;
2399 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2400 if(encoder->protected_->max_lpc_order > 0)
2401 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]);
2404 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2405 if(ok && encoder->protected_->max_lpc_order > 0) {
2406 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2407 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2408 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2411 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2412 for(i = 0; ok && i < 2; i++) {
2413 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2416 for(channel = 0; ok && channel < 2; channel++) {
2417 for(i = 0; ok && i < 2; i++) {
2418 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]);
2421 ok = ok && FLAC__memory_alloc_aligned_uint32_array(new_blocksize, &encoder->private_->abs_residual_unaligned, &encoder->private_->abs_residual);
2422 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 */
2423 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2424 if(encoder->protected_->do_escape_coding)
2425 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2427 /* now adjust the windows if the blocksize has changed */
2428 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2429 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2430 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2431 switch(encoder->protected_->apodizations[i].type) {
2432 case FLAC__APODIZATION_BARTLETT:
2433 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2435 case FLAC__APODIZATION_BARTLETT_HANN:
2436 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2438 case FLAC__APODIZATION_BLACKMAN:
2439 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2441 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2442 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2444 case FLAC__APODIZATION_CONNES:
2445 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2447 case FLAC__APODIZATION_FLATTOP:
2448 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2450 case FLAC__APODIZATION_GAUSS:
2451 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2453 case FLAC__APODIZATION_HAMMING:
2454 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2456 case FLAC__APODIZATION_HANN:
2457 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2459 case FLAC__APODIZATION_KAISER_BESSEL:
2460 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2462 case FLAC__APODIZATION_NUTTALL:
2463 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2465 case FLAC__APODIZATION_RECTANGLE:
2466 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2468 case FLAC__APODIZATION_TRIANGLE:
2469 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2471 case FLAC__APODIZATION_TUKEY:
2472 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2474 case FLAC__APODIZATION_WELCH:
2475 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2479 /* double protection */
2480 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2488 encoder->private_->input_capacity = new_blocksize;
2490 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2495 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples)
2497 const FLAC__byte *buffer;
2500 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
2502 FLAC__bitbuffer_get_buffer(encoder->private_->frame, &buffer, &bytes);
2504 if(encoder->protected_->verify) {
2505 encoder->private_->verify.output.data = buffer;
2506 encoder->private_->verify.output.bytes = bytes;
2507 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2508 encoder->private_->verify.needs_magic_hack = true;
2511 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2512 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2513 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2514 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2520 if(write_frame_(encoder, buffer, bytes, samples) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2521 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2522 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2526 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2529 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2530 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2536 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples)
2538 FLAC__StreamEncoderWriteStatus status;
2539 FLAC__uint64 output_position = 0;
2541 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2542 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2543 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2544 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2548 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2551 FLAC__MetadataType type = (buffer[0] & 0x7f);
2552 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2553 encoder->protected_->streaminfo_offset = output_position;
2554 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2555 encoder->protected_->seektable_offset = output_position;
2559 * Mark the current seek point if hit (if audio_offset == 0 that
2560 * means we're still writing metadata and haven't hit the first
2563 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2564 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2565 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2566 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2567 FLAC__uint64 test_sample;
2569 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2570 test_sample = encoder->private_->seek_table->points[i].sample_number;
2571 if(test_sample > frame_last_sample) {
2574 else if(test_sample >= frame_first_sample) {
2575 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2576 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2577 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2578 encoder->private_->first_seekpoint_to_check++;
2579 /* DO NOT: "break;" and here's why:
2580 * The seektable template may contain more than one target
2581 * sample for any given frame; we will keep looping, generating
2582 * duplicate seekpoints for them, and we'll clean it up later,
2583 * just before writing the seektable back to the metadata.
2587 encoder->private_->first_seekpoint_to_check++;
2593 if(encoder->private_->is_ogg) {
2594 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2595 &encoder->protected_->ogg_encoder_aspect,
2596 FLAC__stream_encoder_get_total_samples_estimate(encoder),
2600 encoder->private_->current_frame_number,
2601 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2603 encoder->private_->client_data
2608 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2610 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2611 encoder->private_->bytes_written += bytes;
2612 encoder->private_->samples_written += samples;
2613 /* we keep a high watermark on the number of frames written because
2614 * when the encoder goes back to write metadata, 'current_frame'
2615 * will drop back to 0.
2617 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2620 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2625 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2626 void update_metadata_(const FLAC__StreamEncoder *encoder)
2628 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2629 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2630 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2631 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2632 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2633 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2634 FLAC__StreamEncoderSeekStatus seek_status;
2636 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2638 /* All this is based on intimate knowledge of the stream header
2639 * layout, but a change to the header format that would break this
2640 * would also break all streams encoded in the previous format.
2644 * Write MD5 signature
2647 const unsigned md5_offset =
2648 FLAC__STREAM_METADATA_HEADER_LENGTH +
2650 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2651 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2652 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2653 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2654 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2655 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2656 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2657 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2660 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2661 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2662 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2665 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2666 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2672 * Write total samples
2675 const unsigned total_samples_byte_offset =
2676 FLAC__STREAM_METADATA_HEADER_LENGTH +
2678 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2679 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2680 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2681 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2682 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2683 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2684 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2688 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2689 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2690 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2691 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2692 b[4] = (FLAC__byte)(samples & 0xFF);
2693 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) {
2694 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2695 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2698 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2699 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2705 * Write min/max framesize
2708 const unsigned min_framesize_offset =
2709 FLAC__STREAM_METADATA_HEADER_LENGTH +
2711 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2712 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2715 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2716 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2717 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2718 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2719 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2720 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2721 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) {
2722 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2723 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2726 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2727 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2735 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2738 FLAC__format_seektable_sort(encoder->private_->seek_table);
2740 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2742 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) {
2743 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2744 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2748 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2751 xx = encoder->private_->seek_table->points[i].sample_number;
2752 b[7] = (FLAC__byte)xx; xx >>= 8;
2753 b[6] = (FLAC__byte)xx; xx >>= 8;
2754 b[5] = (FLAC__byte)xx; xx >>= 8;
2755 b[4] = (FLAC__byte)xx; xx >>= 8;
2756 b[3] = (FLAC__byte)xx; xx >>= 8;
2757 b[2] = (FLAC__byte)xx; xx >>= 8;
2758 b[1] = (FLAC__byte)xx; xx >>= 8;
2759 b[0] = (FLAC__byte)xx; xx >>= 8;
2760 xx = encoder->private_->seek_table->points[i].stream_offset;
2761 b[15] = (FLAC__byte)xx; xx >>= 8;
2762 b[14] = (FLAC__byte)xx; xx >>= 8;
2763 b[13] = (FLAC__byte)xx; xx >>= 8;
2764 b[12] = (FLAC__byte)xx; xx >>= 8;
2765 b[11] = (FLAC__byte)xx; xx >>= 8;
2766 b[10] = (FLAC__byte)xx; xx >>= 8;
2767 b[9] = (FLAC__byte)xx; xx >>= 8;
2768 b[8] = (FLAC__byte)xx; xx >>= 8;
2769 x = encoder->private_->seek_table->points[i].frame_samples;
2770 b[17] = (FLAC__byte)x; x >>= 8;
2771 b[16] = (FLAC__byte)x; x >>= 8;
2772 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2773 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2781 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2782 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2784 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2785 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2786 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2787 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2788 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2791 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2793 /* All this is based on intimate knowledge of the stream header
2794 * layout, but a change to the header format that would break this
2795 * would also break all streams encoded in the previous format.
2799 ** Write STREAMINFO stats
2801 simple_ogg_page__init(&page);
2802 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2803 simple_ogg_page__clear(&page);
2804 return; /* state already set */
2808 * Write MD5 signature
2811 const unsigned md5_offset =
2812 FLAC__STREAM_METADATA_HEADER_LENGTH +
2814 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2815 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2816 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2817 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2818 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2819 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2820 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2821 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2824 if(md5_offset + 16 > (unsigned)page.body_len) {
2825 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2826 simple_ogg_page__clear(&page);
2829 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2833 * Write total samples
2836 const unsigned total_samples_byte_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 +
2841 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2842 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2843 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2844 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2845 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2849 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2850 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2851 simple_ogg_page__clear(&page);
2854 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2855 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2856 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2857 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2858 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2859 b[4] = (FLAC__byte)(samples & 0xFF);
2860 memcpy(page.body + total_samples_byte_offset, b, 5);
2864 * Write min/max framesize
2867 const unsigned min_framesize_offset =
2868 FLAC__STREAM_METADATA_HEADER_LENGTH +
2870 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2871 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2874 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
2875 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2876 simple_ogg_page__clear(&page);
2879 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2880 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2881 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2882 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2883 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2884 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2885 memcpy(page.body + min_framesize_offset, b, 6);
2887 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2888 simple_ogg_page__clear(&page);
2889 return; /* state already set */
2891 simple_ogg_page__clear(&page);
2896 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2900 FLAC__format_seektable_sort(encoder->private_->seek_table);
2902 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2904 simple_ogg_page__init(&page);
2905 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2906 simple_ogg_page__clear(&page);
2907 return; /* state already set */
2910 if(FLAC__STREAM_METADATA_HEADER_LENGTH + (18*encoder->private_->seek_table->num_points) > (unsigned)page.body_len) {
2911 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2912 simple_ogg_page__clear(&page);
2916 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
2919 xx = encoder->private_->seek_table->points[i].sample_number;
2920 b[7] = (FLAC__byte)xx; xx >>= 8;
2921 b[6] = (FLAC__byte)xx; xx >>= 8;
2922 b[5] = (FLAC__byte)xx; xx >>= 8;
2923 b[4] = (FLAC__byte)xx; xx >>= 8;
2924 b[3] = (FLAC__byte)xx; xx >>= 8;
2925 b[2] = (FLAC__byte)xx; xx >>= 8;
2926 b[1] = (FLAC__byte)xx; xx >>= 8;
2927 b[0] = (FLAC__byte)xx; xx >>= 8;
2928 xx = encoder->private_->seek_table->points[i].stream_offset;
2929 b[15] = (FLAC__byte)xx; xx >>= 8;
2930 b[14] = (FLAC__byte)xx; xx >>= 8;
2931 b[13] = (FLAC__byte)xx; xx >>= 8;
2932 b[12] = (FLAC__byte)xx; xx >>= 8;
2933 b[11] = (FLAC__byte)xx; xx >>= 8;
2934 b[10] = (FLAC__byte)xx; xx >>= 8;
2935 b[9] = (FLAC__byte)xx; xx >>= 8;
2936 b[8] = (FLAC__byte)xx; xx >>= 8;
2937 x = encoder->private_->seek_table->points[i].frame_samples;
2938 b[17] = (FLAC__byte)x; x >>= 8;
2939 b[16] = (FLAC__byte)x; x >>= 8;
2940 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2941 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2942 simple_ogg_page__clear(&page);
2948 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2949 simple_ogg_page__clear(&page);
2950 return; /* state already set */
2952 simple_ogg_page__clear(&page);
2957 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
2959 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2962 * Accumulate raw signal to the MD5 signature
2964 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)) {
2965 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2970 * Process the frame header and subframes into the frame bitbuffer
2972 if(!process_subframes_(encoder, is_fractional_block)) {
2973 /* the above function sets the state for us in case of an error */
2978 * Zero-pad the frame to a byte_boundary
2980 if(!FLAC__bitbuffer_zero_pad_to_byte_boundary(encoder->private_->frame)) {
2981 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2986 * CRC-16 the whole thing
2988 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
2989 FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__bitbuffer_get_write_crc16(encoder->private_->frame), FLAC__FRAME_FOOTER_CRC_LEN);
2994 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize)) {
2995 /* the above function sets the state for us in case of an error */
3000 * Get ready for the next frame
3002 encoder->private_->current_sample_number = 0;
3003 encoder->private_->current_frame_number++;
3004 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
3009 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
3011 FLAC__FrameHeader frame_header;
3012 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
3013 FLAC__bool do_independent, do_mid_side, precompute_partition_sums;
3016 * Calculate the min,max Rice partition orders
3018 if(is_fractional_block) {
3019 max_partition_order = 0;
3022 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
3023 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
3025 min_partition_order = min(min_partition_order, max_partition_order);
3027 precompute_partition_sums = encoder->private_->precompute_partition_sums && ((max_partition_order > min_partition_order) || encoder->protected_->do_escape_coding);
3032 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
3033 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3036 frame_header.blocksize = encoder->protected_->blocksize;
3037 frame_header.sample_rate = encoder->protected_->sample_rate;
3038 frame_header.channels = encoder->protected_->channels;
3039 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
3040 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
3041 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
3042 frame_header.number.frame_number = encoder->private_->current_frame_number;
3045 * Figure out what channel assignments to try
3047 if(encoder->protected_->do_mid_side_stereo) {
3048 if(encoder->protected_->loose_mid_side_stereo) {
3049 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
3050 do_independent = true;
3054 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
3055 do_mid_side = !do_independent;
3059 do_independent = true;
3064 do_independent = true;
3065 do_mid_side = false;
3068 FLAC__ASSERT(do_independent || do_mid_side);
3071 * Check for wasted bits; set effective bps for each subframe
3073 if(do_independent) {
3074 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3075 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
3076 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
3077 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
3081 FLAC__ASSERT(encoder->protected_->channels == 2);
3082 for(channel = 0; channel < 2; channel++) {
3083 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
3084 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
3085 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
3090 * First do a normal encoding pass of each independent channel
3092 if(do_independent) {
3093 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3097 min_partition_order,
3098 max_partition_order,
3099 precompute_partition_sums,
3101 encoder->private_->subframe_bps[channel],
3102 encoder->private_->integer_signal[channel],
3103 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3104 encoder->private_->real_signal[channel],
3106 encoder->private_->subframe_workspace_ptr[channel],
3107 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
3108 encoder->private_->residual_workspace[channel],
3109 encoder->private_->best_subframe+channel,
3110 encoder->private_->best_subframe_bits+channel
3118 * Now do mid and side channels if requested
3121 FLAC__ASSERT(encoder->protected_->channels == 2);
3123 for(channel = 0; channel < 2; channel++) {
3127 min_partition_order,
3128 max_partition_order,
3129 precompute_partition_sums,
3131 encoder->private_->subframe_bps_mid_side[channel],
3132 encoder->private_->integer_signal_mid_side[channel],
3133 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3134 encoder->private_->real_signal_mid_side[channel],
3136 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3137 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3138 encoder->private_->residual_workspace_mid_side[channel],
3139 encoder->private_->best_subframe_mid_side+channel,
3140 encoder->private_->best_subframe_bits_mid_side+channel
3148 * Compose the frame bitbuffer
3151 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3152 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3153 FLAC__ChannelAssignment channel_assignment;
3155 FLAC__ASSERT(encoder->protected_->channels == 2);
3157 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3158 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3161 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3163 FLAC__ChannelAssignment ca;
3165 FLAC__ASSERT(do_independent && do_mid_side);
3167 /* We have to figure out which channel assignent results in the smallest frame */
3168 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3169 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3170 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3171 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3173 for(channel_assignment = (FLAC__ChannelAssignment)0, min_bits = bits[0], ca = (FLAC__ChannelAssignment)1; (int)ca <= 3; ca = (FLAC__ChannelAssignment)((int)ca + 1)) {
3174 if(bits[ca] < min_bits) {
3175 min_bits = bits[ca];
3176 channel_assignment = ca;
3181 frame_header.channel_assignment = channel_assignment;
3183 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3184 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3188 switch(channel_assignment) {
3189 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3190 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3191 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3193 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3194 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3195 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3197 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3198 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3199 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3201 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3202 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3203 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3209 switch(channel_assignment) {
3210 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3211 left_bps = encoder->private_->subframe_bps [0];
3212 right_bps = encoder->private_->subframe_bps [1];
3214 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3215 left_bps = encoder->private_->subframe_bps [0];
3216 right_bps = encoder->private_->subframe_bps_mid_side[1];
3218 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3219 left_bps = encoder->private_->subframe_bps_mid_side[1];
3220 right_bps = encoder->private_->subframe_bps [1];
3222 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3223 left_bps = encoder->private_->subframe_bps_mid_side[0];
3224 right_bps = encoder->private_->subframe_bps_mid_side[1];
3230 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3231 if(!add_subframe_(encoder, &frame_header, left_bps , left_subframe , encoder->private_->frame))
3233 if(!add_subframe_(encoder, &frame_header, right_bps, right_subframe, encoder->private_->frame))
3237 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3238 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3242 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3243 if(!add_subframe_(encoder, &frame_header, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) {
3244 /* the above function sets the state for us in case of an error */
3250 if(encoder->protected_->loose_mid_side_stereo) {
3251 encoder->private_->loose_mid_side_stereo_frame_count++;
3252 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3253 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3256 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3261 FLAC__bool process_subframe_(
3262 FLAC__StreamEncoder *encoder,
3263 unsigned min_partition_order,
3264 unsigned max_partition_order,
3265 FLAC__bool precompute_partition_sums,
3266 const FLAC__FrameHeader *frame_header,
3267 unsigned subframe_bps,
3268 const FLAC__int32 integer_signal[],
3269 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3270 const FLAC__real real_signal[],
3272 FLAC__Subframe *subframe[2],
3273 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3274 FLAC__int32 *residual[2],
3275 unsigned *best_subframe,
3279 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3280 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3282 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3284 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3285 FLAC__double lpc_residual_bits_per_sample;
3286 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 */
3287 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3288 unsigned min_lpc_order, max_lpc_order, lpc_order;
3289 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3291 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3292 unsigned rice_parameter;
3293 unsigned _candidate_bits, _best_bits;
3294 unsigned _best_subframe;
3296 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3298 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3299 _best_bits = UINT_MAX;
3301 _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3303 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3304 unsigned signal_is_constant = false;
3305 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);
3306 /* check for constant subframe */
3308 !encoder->private_->disable_constant_subframes &&
3309 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3310 fixed_residual_bits_per_sample[1] == 0.0
3312 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3315 /* the above means it's possible all samples are the same value; now double-check it: */
3317 signal_is_constant = true;
3318 for(i = 1; i < frame_header->blocksize; i++) {
3319 if(integer_signal[0] != integer_signal[i]) {
3320 signal_is_constant = false;
3325 if(signal_is_constant) {
3326 _candidate_bits = evaluate_constant_subframe_(integer_signal[0], subframe_bps, subframe[!_best_subframe]);
3327 if(_candidate_bits < _best_bits) {
3328 _best_subframe = !_best_subframe;
3329 _best_bits = _candidate_bits;
3333 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3335 if(encoder->protected_->do_exhaustive_model_search) {
3336 min_fixed_order = 0;
3337 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3340 min_fixed_order = max_fixed_order = guess_fixed_order;
3342 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3343 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3344 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3345 continue; /* don't even try */
3346 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 */
3348 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3349 continue; /* don't even try */
3350 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 */
3352 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3353 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3354 #ifdef DEBUG_VERBOSE
3355 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3357 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3360 evaluate_fixed_subframe_(
3363 residual[!_best_subframe],
3364 encoder->private_->abs_residual,
3365 encoder->private_->abs_residual_partition_sums,
3366 encoder->private_->raw_bits_per_partition,
3367 frame_header->blocksize,
3371 min_partition_order,
3372 max_partition_order,
3373 precompute_partition_sums,
3374 encoder->protected_->do_escape_coding,
3375 encoder->protected_->rice_parameter_search_dist,
3376 subframe[!_best_subframe],
3377 partitioned_rice_contents[!_best_subframe]
3379 if(_candidate_bits < _best_bits) {
3380 _best_subframe = !_best_subframe;
3381 _best_bits = _candidate_bits;
3386 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3388 if(encoder->protected_->max_lpc_order > 0) {
3389 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3390 max_lpc_order = frame_header->blocksize-1;
3392 max_lpc_order = encoder->protected_->max_lpc_order;
3393 if(max_lpc_order > 0) {
3395 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3396 FLAC__lpc_window_data(real_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3397 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3398 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3399 if(autoc[0] != 0.0) {
3400 FLAC__lpc_compute_lp_coefficients(autoc, max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3401 if(encoder->protected_->do_exhaustive_model_search) {
3405 const unsigned guess_lpc_order =
3406 FLAC__lpc_compute_best_order(
3409 frame_header->blocksize,
3411 encoder->protected_->do_qlp_coeff_prec_search?
3412 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3413 encoder->protected_->qlp_coeff_precision
3416 min_lpc_order = max_lpc_order = guess_lpc_order;
3418 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3419 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3420 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3421 continue; /* don't even try */
3422 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3423 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3424 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3425 #ifdef DEBUG_VERBOSE
3426 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3428 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3430 if(encoder->protected_->do_qlp_coeff_prec_search) {
3431 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3432 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3433 if(subframe_bps <= 17) {
3434 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3435 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3438 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3441 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3443 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3445 evaluate_lpc_subframe_(
3448 residual[!_best_subframe],
3449 encoder->private_->abs_residual,
3450 encoder->private_->abs_residual_partition_sums,
3451 encoder->private_->raw_bits_per_partition,
3452 encoder->private_->lp_coeff[lpc_order-1],
3453 frame_header->blocksize,
3456 qlp_coeff_precision,
3458 min_partition_order,
3459 max_partition_order,
3460 precompute_partition_sums,
3461 encoder->protected_->do_escape_coding,
3462 encoder->protected_->rice_parameter_search_dist,
3463 subframe[!_best_subframe],
3464 partitioned_rice_contents[!_best_subframe]
3466 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3467 if(_candidate_bits < _best_bits) {
3468 _best_subframe = !_best_subframe;
3469 _best_bits = _candidate_bits;
3478 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3482 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3483 if(_best_bits == UINT_MAX) {
3484 FLAC__ASSERT(_best_subframe == 0);
3485 _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3488 *best_subframe = _best_subframe;
3489 *best_bits = _best_bits;
3494 FLAC__bool add_subframe_(
3495 FLAC__StreamEncoder *encoder,
3496 const FLAC__FrameHeader *frame_header,
3497 unsigned subframe_bps,
3498 const FLAC__Subframe *subframe,
3499 FLAC__BitBuffer *frame
3502 switch(subframe->type) {
3503 case FLAC__SUBFRAME_TYPE_CONSTANT:
3504 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3505 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3509 case FLAC__SUBFRAME_TYPE_FIXED:
3510 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), frame_header->blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3511 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3515 case FLAC__SUBFRAME_TYPE_LPC:
3516 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), frame_header->blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3517 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3521 case FLAC__SUBFRAME_TYPE_VERBATIM:
3522 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), frame_header->blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3523 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3534 unsigned evaluate_constant_subframe_(
3535 const FLAC__int32 signal,
3536 unsigned subframe_bps,
3537 FLAC__Subframe *subframe
3540 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3541 subframe->data.constant.value = signal;
3543 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe_bps;
3546 unsigned evaluate_fixed_subframe_(
3547 FLAC__StreamEncoder *encoder,
3548 const FLAC__int32 signal[],
3549 FLAC__int32 residual[],
3550 FLAC__uint32 abs_residual[],
3551 FLAC__uint64 abs_residual_partition_sums[],
3552 unsigned raw_bits_per_partition[],
3554 unsigned subframe_bps,
3556 unsigned rice_parameter,
3557 unsigned min_partition_order,
3558 unsigned max_partition_order,
3559 FLAC__bool precompute_partition_sums,
3560 FLAC__bool do_escape_coding,
3561 unsigned rice_parameter_search_dist,
3562 FLAC__Subframe *subframe,
3563 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3566 unsigned i, residual_bits;
3567 const unsigned residual_samples = blocksize - order;
3569 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3571 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3573 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3574 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3575 subframe->data.fixed.residual = residual;
3578 find_best_partition_order_(
3582 abs_residual_partition_sums,
3583 raw_bits_per_partition,
3587 min_partition_order,
3588 max_partition_order,
3589 precompute_partition_sums,
3591 rice_parameter_search_dist,
3592 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3595 subframe->data.fixed.order = order;
3596 for(i = 0; i < order; i++)
3597 subframe->data.fixed.warmup[i] = signal[i];
3599 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (order * subframe_bps) + residual_bits;
3602 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3603 unsigned evaluate_lpc_subframe_(
3604 FLAC__StreamEncoder *encoder,
3605 const FLAC__int32 signal[],
3606 FLAC__int32 residual[],
3607 FLAC__uint32 abs_residual[],
3608 FLAC__uint64 abs_residual_partition_sums[],
3609 unsigned raw_bits_per_partition[],
3610 const FLAC__real lp_coeff[],
3612 unsigned subframe_bps,
3614 unsigned qlp_coeff_precision,
3615 unsigned rice_parameter,
3616 unsigned min_partition_order,
3617 unsigned max_partition_order,
3618 FLAC__bool precompute_partition_sums,
3619 FLAC__bool do_escape_coding,
3620 unsigned rice_parameter_search_dist,
3621 FLAC__Subframe *subframe,
3622 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3625 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3626 unsigned i, residual_bits;
3627 int quantization, ret;
3628 const unsigned residual_samples = blocksize - order;
3630 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3631 if(subframe_bps <= 16) {
3632 FLAC__ASSERT(order > 0);
3633 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3634 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3637 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3639 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3641 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3642 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3643 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3645 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3647 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3649 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3651 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3652 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3653 subframe->data.lpc.residual = residual;
3656 find_best_partition_order_(
3660 abs_residual_partition_sums,
3661 raw_bits_per_partition,
3665 min_partition_order,
3666 max_partition_order,
3667 precompute_partition_sums,
3669 rice_parameter_search_dist,
3670 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3673 subframe->data.lpc.order = order;
3674 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3675 subframe->data.lpc.quantization_level = quantization;
3676 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3677 for(i = 0; i < order; i++)
3678 subframe->data.lpc.warmup[i] = signal[i];
3680 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;
3684 unsigned evaluate_verbatim_subframe_(
3685 const FLAC__int32 signal[],
3687 unsigned subframe_bps,
3688 FLAC__Subframe *subframe
3691 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3693 subframe->data.verbatim.data = signal;
3695 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (blocksize * subframe_bps);
3698 unsigned find_best_partition_order_(
3699 FLAC__StreamEncoderPrivate *private_,
3700 const FLAC__int32 residual[],
3701 FLAC__uint32 abs_residual[],
3702 FLAC__uint64 abs_residual_partition_sums[],
3703 unsigned raw_bits_per_partition[],
3704 unsigned residual_samples,
3705 unsigned predictor_order,
3706 unsigned rice_parameter,
3707 unsigned min_partition_order,
3708 unsigned max_partition_order,
3709 FLAC__bool precompute_partition_sums,
3710 FLAC__bool do_escape_coding,
3711 unsigned rice_parameter_search_dist,
3712 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
3716 unsigned residual_bits, best_residual_bits = 0;
3717 unsigned residual_sample;
3718 unsigned best_parameters_index = 0;
3719 const unsigned blocksize = residual_samples + predictor_order;
3721 /* compute abs(residual) for use later */
3722 for(residual_sample = 0; residual_sample < residual_samples; residual_sample++) {
3723 r = residual[residual_sample];
3724 abs_residual[residual_sample] = (FLAC__uint32)(r<0? -r : r);
3727 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3728 min_partition_order = min(min_partition_order, max_partition_order);
3730 if(precompute_partition_sums) {
3731 int partition_order;
3734 precompute_partition_info_sums_(abs_residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order);
3736 if(do_escape_coding)
3737 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3739 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3740 #ifdef DONT_ESTIMATE_RICE_BITS
3742 set_partitioned_rice_with_precompute_(
3744 abs_residual_partition_sums+sum,
3745 raw_bits_per_partition+sum,
3749 rice_parameter_search_dist,
3750 (unsigned)partition_order,
3752 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3758 set_partitioned_rice_with_precompute_(
3760 abs_residual_partition_sums+sum,
3761 raw_bits_per_partition+sum,
3765 rice_parameter_search_dist,
3766 (unsigned)partition_order,
3768 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3774 FLAC__ASSERT(best_residual_bits != 0);
3777 sum += 1u << partition_order;
3778 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3779 best_residual_bits = residual_bits;
3780 best_parameters_index = !best_parameters_index;
3781 best_partitioned_rice->order = partition_order;
3786 unsigned partition_order;
3787 for(partition_order = min_partition_order; partition_order <= max_partition_order; partition_order++) {
3788 #ifdef DONT_ESTIMATE_RICE_BITS
3790 set_partitioned_rice_(
3796 rice_parameter_search_dist,
3798 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3804 set_partitioned_rice_(
3809 rice_parameter_search_dist,
3811 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3817 FLAC__ASSERT(best_residual_bits != 0);
3820 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3821 best_residual_bits = residual_bits;
3822 best_parameters_index = !best_parameters_index;
3823 best_partitioned_rice->order = partition_order;
3829 * We are allowed to de-const the pointer based on our special knowledge;
3830 * it is const to the outside world.
3833 FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents;
3834 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order));
3835 memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3836 memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3839 return best_residual_bits;
3842 void precompute_partition_info_sums_(
3843 const FLAC__uint32 abs_residual[],
3844 FLAC__uint64 abs_residual_partition_sums[],
3845 unsigned residual_samples,
3846 unsigned predictor_order,
3847 unsigned min_partition_order,
3848 unsigned max_partition_order
3851 int partition_order;
3852 unsigned from_partition, to_partition = 0;
3853 const unsigned blocksize = residual_samples + predictor_order;
3855 /* first do max_partition_order */
3856 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3857 FLAC__uint64 abs_residual_partition_sum;
3859 unsigned partition, partition_sample, partition_samples, residual_sample;
3860 const unsigned partitions = 1u << partition_order;
3861 const unsigned default_partition_samples = blocksize >> partition_order;
3863 FLAC__ASSERT(default_partition_samples > predictor_order);
3865 for(partition = residual_sample = 0; partition < partitions; partition++) {
3866 partition_samples = default_partition_samples;
3868 partition_samples -= predictor_order;
3869 abs_residual_partition_sum = 0;
3870 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3871 abs_r = abs_residual[residual_sample];
3872 abs_residual_partition_sum += abs_r;
3875 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3877 to_partition = partitions;
3881 /* now merge partitions for lower orders */
3882 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3885 const unsigned partitions = 1u << partition_order;
3886 for(i = 0; i < partitions; i++) {
3887 s = abs_residual_partition_sums[from_partition];
3889 abs_residual_partition_sums[to_partition] = s + abs_residual_partition_sums[from_partition];
3896 void precompute_partition_info_escapes_(
3897 const FLAC__int32 residual[],
3898 unsigned raw_bits_per_partition[],
3899 unsigned residual_samples,
3900 unsigned predictor_order,
3901 unsigned min_partition_order,
3902 unsigned max_partition_order
3905 int partition_order;
3906 unsigned from_partition, to_partition = 0;
3907 const unsigned blocksize = residual_samples + predictor_order;
3909 /* first do max_partition_order */
3910 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3911 FLAC__int32 r, residual_partition_min, residual_partition_max;
3912 unsigned silog2_min, silog2_max;
3913 unsigned partition, partition_sample, partition_samples, residual_sample;
3914 const unsigned partitions = 1u << partition_order;
3915 const unsigned default_partition_samples = blocksize >> partition_order;
3917 FLAC__ASSERT(default_partition_samples > predictor_order);
3919 for(partition = residual_sample = 0; partition < partitions; partition++) {
3920 partition_samples = default_partition_samples;
3922 partition_samples -= predictor_order;
3923 residual_partition_min = residual_partition_max = 0;
3924 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3925 r = residual[residual_sample];
3926 if(r < residual_partition_min)
3927 residual_partition_min = r;
3928 else if(r > residual_partition_max)
3929 residual_partition_max = r;
3932 silog2_min = FLAC__bitmath_silog2(residual_partition_min);
3933 silog2_max = FLAC__bitmath_silog2(residual_partition_max);
3934 raw_bits_per_partition[partition] = max(silog2_min, silog2_max);
3936 to_partition = partitions;
3937 break; /*@@@ yuck, should remove the 'for' loop instead */
3940 /* now merge partitions for lower orders */
3941 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3944 const unsigned partitions = 1u << partition_order;
3945 for(i = 0; i < partitions; i++) {
3946 m = raw_bits_per_partition[from_partition];
3948 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
3955 #ifdef VARIABLE_RICE_BITS
3956 #undef VARIABLE_RICE_BITS
3958 #ifndef DONT_ESTIMATE_RICE_BITS
3959 #define VARIABLE_RICE_BITS(value, parameter) ((value) >> (parameter))
3962 #ifdef DONT_ESTIMATE_RICE_BITS
3963 FLAC__bool set_partitioned_rice_(
3964 const FLAC__uint32 abs_residual[],
3965 const FLAC__int32 residual[],
3966 const unsigned residual_samples,
3967 const unsigned predictor_order,
3968 const unsigned suggested_rice_parameter,
3969 const unsigned rice_parameter_search_dist,
3970 const unsigned partition_order,
3971 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3975 FLAC__bool set_partitioned_rice_(
3976 const FLAC__uint32 abs_residual[],
3977 const unsigned residual_samples,
3978 const unsigned predictor_order,
3979 const unsigned suggested_rice_parameter,
3980 const unsigned rice_parameter_search_dist,
3981 const unsigned partition_order,
3982 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3987 unsigned rice_parameter, partition_bits;
3988 #ifndef NO_RICE_SEARCH
3989 unsigned best_partition_bits;
3990 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
3992 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3993 unsigned *parameters;
3995 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
3997 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
3998 parameters = partitioned_rice_contents->parameters;
4000 if(partition_order == 0) {
4003 #ifndef NO_RICE_SEARCH
4004 if(rice_parameter_search_dist) {
4005 if(suggested_rice_parameter < rice_parameter_search_dist)
4006 min_rice_parameter = 0;
4008 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
4009 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
4010 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4011 #ifdef DEBUG_VERBOSE
4012 fprintf(stderr, "clipping rice_parameter (%u -> %u) @2\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4014 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4018 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
4020 best_partition_bits = 0xffffffff;
4021 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4023 #ifdef VARIABLE_RICE_BITS
4024 const unsigned rice_parameter_estimate = rice_parameter-1;
4025 partition_bits = (1+rice_parameter) * residual_samples;
4029 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4030 for(i = 0; i < residual_samples; i++) {
4031 #ifdef VARIABLE_RICE_BITS
4032 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
4034 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
4037 #ifndef NO_RICE_SEARCH
4038 if(partition_bits < best_partition_bits) {
4039 best_rice_parameter = rice_parameter;
4040 best_partition_bits = partition_bits;
4044 parameters[0] = best_rice_parameter;
4045 bits_ += best_partition_bits;
4048 unsigned partition, residual_sample, save_residual_sample, partition_sample;
4049 unsigned partition_samples;
4050 FLAC__uint64 mean, k;
4051 const unsigned partitions = 1u << partition_order;
4052 for(partition = residual_sample = 0; partition < partitions; partition++) {
4053 partition_samples = (residual_samples+predictor_order) >> partition_order;
4054 if(partition == 0) {
4055 if(partition_samples <= predictor_order)
4058 partition_samples -= predictor_order;
4061 save_residual_sample = residual_sample;
4062 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++)
4063 mean += abs_residual[residual_sample];
4064 residual_sample = save_residual_sample;
4065 /* we are basically calculating the size in bits of the
4066 * average residual magnitude in the partition:
4067 * rice_parameter = floor(log2(mean/partition_samples))
4068 * 'mean' is not a good name for the variable, it is
4069 * actually the sum of magnitudes of all residual values
4070 * in the partition, so the actual mean is
4071 * mean/partition_samples
4073 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4075 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4076 #ifdef DEBUG_VERBOSE
4077 fprintf(stderr, "clipping rice_parameter (%u -> %u) @3\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4079 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4082 #ifndef NO_RICE_SEARCH
4083 if(rice_parameter_search_dist) {
4084 if(rice_parameter < rice_parameter_search_dist)
4085 min_rice_parameter = 0;
4087 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4088 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4089 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4090 #ifdef DEBUG_VERBOSE
4091 fprintf(stderr, "clipping rice_parameter (%u -> %u) @4\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4093 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4097 min_rice_parameter = max_rice_parameter = rice_parameter;
4099 best_partition_bits = 0xffffffff;
4100 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4102 #ifdef VARIABLE_RICE_BITS
4103 const unsigned rice_parameter_estimate = rice_parameter-1;
4104 partition_bits = (1+rice_parameter) * partition_samples;
4108 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4109 save_residual_sample = residual_sample;
4110 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
4111 #ifdef VARIABLE_RICE_BITS
4112 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
4114 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
4117 #ifndef NO_RICE_SEARCH
4118 if(rice_parameter != max_rice_parameter)
4119 residual_sample = save_residual_sample;
4120 if(partition_bits < best_partition_bits) {
4121 best_rice_parameter = rice_parameter;
4122 best_partition_bits = partition_bits;
4126 parameters[partition] = best_rice_parameter;
4127 bits_ += best_partition_bits;
4135 #ifdef DONT_ESTIMATE_RICE_BITS
4136 FLAC__bool set_partitioned_rice_with_precompute_(
4137 const FLAC__int32 residual[],
4138 const FLAC__uint64 abs_residual_partition_sums[],
4139 const unsigned raw_bits_per_partition[],
4140 const unsigned residual_samples,
4141 const unsigned predictor_order,
4142 const unsigned suggested_rice_parameter,
4143 const unsigned rice_parameter_search_dist,
4144 const unsigned partition_order,
4145 const FLAC__bool search_for_escapes,
4146 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4150 FLAC__bool set_partitioned_rice_with_precompute_(
4151 const FLAC__uint32 abs_residual[],
4152 const FLAC__uint64 abs_residual_partition_sums[],
4153 const unsigned raw_bits_per_partition[],
4154 const unsigned residual_samples,
4155 const unsigned predictor_order,
4156 const unsigned suggested_rice_parameter,
4157 const unsigned rice_parameter_search_dist,
4158 const unsigned partition_order,
4159 const FLAC__bool search_for_escapes,
4160 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4165 unsigned rice_parameter, partition_bits;
4166 #ifndef NO_RICE_SEARCH
4167 unsigned best_partition_bits;
4168 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
4171 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
4172 unsigned *parameters, *raw_bits;
4174 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
4176 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
4177 parameters = partitioned_rice_contents->parameters;
4178 raw_bits = partitioned_rice_contents->raw_bits;
4180 if(partition_order == 0) {
4183 #ifndef NO_RICE_SEARCH
4184 if(rice_parameter_search_dist) {
4185 if(suggested_rice_parameter < rice_parameter_search_dist)
4186 min_rice_parameter = 0;
4188 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
4189 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
4190 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4191 #ifdef DEBUG_VERBOSE
4192 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4194 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4198 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
4200 best_partition_bits = 0xffffffff;
4201 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4203 #ifdef VARIABLE_RICE_BITS
4204 const unsigned rice_parameter_estimate = rice_parameter-1;
4205 partition_bits = (1+rice_parameter) * residual_samples;
4209 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4210 for(i = 0; i < residual_samples; i++) {
4211 #ifdef VARIABLE_RICE_BITS
4212 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
4214 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
4217 #ifndef NO_RICE_SEARCH
4218 if(partition_bits < best_partition_bits) {
4219 best_rice_parameter = rice_parameter;
4220 best_partition_bits = partition_bits;
4224 if(search_for_escapes) {
4225 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;
4226 if(flat_bits <= best_partition_bits) {
4227 raw_bits[0] = raw_bits_per_partition[0];
4228 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4229 best_partition_bits = flat_bits;
4232 parameters[0] = best_rice_parameter;
4233 bits_ += best_partition_bits;
4236 unsigned partition, residual_sample, save_residual_sample, partition_sample;
4237 unsigned partition_samples;
4238 FLAC__uint64 mean, k;
4239 const unsigned partitions = 1u << partition_order;
4240 for(partition = residual_sample = 0; partition < partitions; partition++) {
4241 partition_samples = (residual_samples+predictor_order) >> partition_order;
4242 if(partition == 0) {
4243 if(partition_samples <= predictor_order)
4246 partition_samples -= predictor_order;
4248 mean = abs_residual_partition_sums[partition];
4249 /* we are basically calculating the size in bits of the
4250 * average residual magnitude in the partition:
4251 * rice_parameter = floor(log2(mean/partition_samples))
4252 * 'mean' is not a good name for the variable, it is
4253 * actually the sum of magnitudes of all residual values
4254 * in the partition, so the actual mean is
4255 * mean/partition_samples
4257 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4259 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4260 #ifdef DEBUG_VERBOSE
4261 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4263 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4266 #ifndef NO_RICE_SEARCH
4267 if(rice_parameter_search_dist) {
4268 if(rice_parameter < rice_parameter_search_dist)
4269 min_rice_parameter = 0;
4271 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4272 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4273 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4274 #ifdef DEBUG_VERBOSE
4275 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4277 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4281 min_rice_parameter = max_rice_parameter = rice_parameter;
4283 best_partition_bits = 0xffffffff;
4284 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4286 #ifdef VARIABLE_RICE_BITS
4287 const unsigned rice_parameter_estimate = rice_parameter-1;
4288 partition_bits = (1+rice_parameter) * partition_samples;
4292 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
4293 save_residual_sample = residual_sample;
4294 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
4295 #ifdef VARIABLE_RICE_BITS
4296 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
4298 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
4301 #ifndef NO_RICE_SEARCH
4302 if(rice_parameter != max_rice_parameter)
4303 residual_sample = save_residual_sample;
4304 if(partition_bits < best_partition_bits) {
4305 best_rice_parameter = rice_parameter;
4306 best_partition_bits = partition_bits;
4310 if(search_for_escapes) {
4311 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;
4312 if(flat_bits <= best_partition_bits) {
4313 raw_bits[partition] = raw_bits_per_partition[partition];
4314 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4315 best_partition_bits = flat_bits;
4318 parameters[partition] = best_rice_parameter;
4319 bits_ += best_partition_bits;
4327 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4332 for(i = 0; i < samples && !(x&1); i++)
4339 for(shift = 0; !(x&1); shift++)
4344 for(i = 0; i < samples; i++)
4345 signal[i] >>= shift;
4351 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4355 for(channel = 0; channel < channels; channel++)
4356 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4358 fifo->tail += wide_samples;
4360 FLAC__ASSERT(fifo->tail <= fifo->size);
4363 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4366 unsigned sample, wide_sample;
4367 unsigned tail = fifo->tail;
4369 sample = input_offset * channels;
4370 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4371 for(channel = 0; channel < channels; channel++)
4372 fifo->data[channel][tail] = input[sample++];
4377 FLAC__ASSERT(fifo->tail <= fifo->size);
4380 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4382 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4383 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4386 if(encoder->private_->verify.needs_magic_hack) {
4387 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4388 *bytes = FLAC__STREAM_SYNC_LENGTH;
4389 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4390 encoder->private_->verify.needs_magic_hack = false;
4393 if(encoded_bytes == 0) {
4395 * If we get here, a FIFO underflow has occurred,
4396 * which means there is a bug somewhere.
4399 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4401 else if(encoded_bytes < *bytes)
4402 *bytes = encoded_bytes;
4403 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4404 encoder->private_->verify.output.data += *bytes;
4405 encoder->private_->verify.output.bytes -= *bytes;
4408 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4411 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4413 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4415 const unsigned channels = FLAC__stream_decoder_get_channels(decoder);
4416 const unsigned blocksize = frame->header.blocksize;
4417 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4419 for(channel = 0; channel < channels; channel++) {
4420 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4421 unsigned i, sample = 0;
4422 FLAC__int32 expect = 0, got = 0;
4424 for(i = 0; i < blocksize; i++) {
4425 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4427 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4428 got = (FLAC__int32)buffer[channel][i];
4432 FLAC__ASSERT(i < blocksize);
4433 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4434 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4435 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4436 encoder->private_->verify.error_stats.channel = channel;
4437 encoder->private_->verify.error_stats.sample = sample;
4438 encoder->private_->verify.error_stats.expected = expect;
4439 encoder->private_->verify.error_stats.got = got;
4440 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4441 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4444 /* dequeue the frame from the fifo */
4445 for(channel = 0; channel < channels; channel++) {
4446 memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail - blocksize);
4448 encoder->private_->verify.input_fifo.tail -= blocksize;
4449 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4452 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4454 (void)decoder, (void)metadata, (void)client_data;
4457 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4459 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4460 (void)decoder, (void)status;
4461 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4464 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4468 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4470 if (feof(encoder->private_->file))
4471 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4472 else if (ferror(encoder->private_->file))
4473 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4475 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4478 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4482 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
4483 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4485 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4488 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4494 offset = ftello(encoder->private_->file);
4497 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4500 *absolute_byte_offset = (FLAC__uint64)offset;
4501 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4505 #ifdef FLAC__VALGRIND_TESTING
4506 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4508 size_t ret = fwrite(ptr, size, nmemb, stream);
4514 #define local__fwrite fwrite
4517 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4519 (void)client_data, (void)current_frame;
4521 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4522 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4524 /* We would like to be able to use 'samples > 0' in the
4525 * clause here but currently because of the nature of our
4526 * Ogg writing implementation, 'samples' is always 0 (see
4527 * ogg_encoder_aspect.c). The downside is extra progress
4530 encoder->private_->is_ogg? true :
4535 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4536 * because at this point in the callback chain, the stats
4537 * have not been updated. Only after we return and control
4538 * gets back to write_frame_() are the stats updated
4540 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);
4542 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4545 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4549 * This will forcibly set stdout to binary mode (for OSes that require it)
4551 FILE *get_binary_stdout_()
4553 /* if something breaks here it is probably due to the presence or
4554 * absence of an underscore before the identifiers 'setmode',
4555 * 'fileno', and/or 'O_BINARY'; check your system header files.
4557 #if defined _MSC_VER || defined __MINGW32__
4558 _setmode(_fileno(stdout), _O_BINARY);
4559 #elif defined __CYGWIN__
4560 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4561 setmode(_fileno(stdout), _O_BINARY);
4562 #elif defined __EMX__
4563 setmode(fileno(stdout), O_BINARY);