1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 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 #include "FLAC/assert.h"
50 #include "FLAC/stream_decoder.h"
51 #include "share/alloc.h"
52 #include "share/compat.h"
53 #include "protected/stream_encoder.h"
54 #include "private/bitwriter.h"
55 #include "private/bitmath.h"
56 #include "private/crc.h"
57 #include "private/cpu.h"
58 #include "private/fixed.h"
59 #include "private/format.h"
60 #include "private/lpc.h"
61 #include "private/md5.h"
62 #include "private/memory.h"
64 #include "private/ogg_helper.h"
65 #include "private/ogg_mapping.h"
67 #include "private/stream_encoder_framing.h"
68 #include "private/window.h"
77 #define min(x,y) ((x)<(y)?(x):(y))
82 #define max(x,y) ((x)>(y)?(x):(y))
84 /* Exact Rice codeword length calculation is off by default. The simple
85 * (and fast) estimation (of how many bits a residual value will be
86 * encoded with) in this encoder is very good, almost always yielding
87 * compression within 0.1% of exact calculation.
89 #undef EXACT_RICE_BITS_CALCULATION
90 /* Rice parameter searching is off by default. The simple (and fast)
91 * parameter estimation in this encoder is very good, almost always
92 * yielding compression within 0.1% of the optimal parameters.
94 #undef ENABLE_RICE_PARAMETER_SEARCH
98 FLAC__int32 *data[FLAC__MAX_CHANNELS];
99 unsigned size; /* of each data[] in samples */
104 const FLAC__byte *data;
110 ENCODER_IN_MAGIC = 0,
111 ENCODER_IN_METADATA = 1,
115 static struct CompressionLevels {
116 FLAC__bool do_mid_side_stereo;
117 FLAC__bool loose_mid_side_stereo;
118 unsigned max_lpc_order;
119 unsigned qlp_coeff_precision;
120 FLAC__bool do_qlp_coeff_prec_search;
121 FLAC__bool do_escape_coding;
122 FLAC__bool do_exhaustive_model_search;
123 unsigned min_residual_partition_order;
124 unsigned max_residual_partition_order;
125 unsigned rice_parameter_search_dist;
126 } compression_levels_[] = {
127 { false, false, 0, 0, false, false, false, 0, 3, 0 },
128 { true , true , 0, 0, false, false, false, 0, 3, 0 },
129 { true , false, 0, 0, false, false, false, 0, 3, 0 },
130 { false, false, 6, 0, false, false, false, 0, 4, 0 },
131 { true , true , 8, 0, false, false, false, 0, 4, 0 },
132 { true , false, 8, 0, false, false, false, 0, 5, 0 },
133 { true , false, 8, 0, false, false, false, 0, 6, 0 },
134 { true , false, 8, 0, false, false, true , 0, 6, 0 },
135 { true , false, 12, 0, false, false, true , 0, 6, 0 }
139 /***********************************************************************
141 * Private class method prototypes
143 ***********************************************************************/
145 static void set_defaults_(FLAC__StreamEncoder *encoder);
146 static void free_(FLAC__StreamEncoder *encoder);
147 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
148 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
149 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
150 static void update_metadata_(const FLAC__StreamEncoder *encoder);
152 static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
154 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
155 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
157 static FLAC__bool process_subframe_(
158 FLAC__StreamEncoder *encoder,
159 unsigned min_partition_order,
160 unsigned max_partition_order,
161 const FLAC__FrameHeader *frame_header,
162 unsigned subframe_bps,
163 const FLAC__int32 integer_signal[],
164 FLAC__Subframe *subframe[2],
165 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
166 FLAC__int32 *residual[2],
167 unsigned *best_subframe,
171 static FLAC__bool add_subframe_(
172 FLAC__StreamEncoder *encoder,
174 unsigned subframe_bps,
175 const FLAC__Subframe *subframe,
176 FLAC__BitWriter *frame
179 static unsigned evaluate_constant_subframe_(
180 FLAC__StreamEncoder *encoder,
181 const FLAC__int32 signal,
183 unsigned subframe_bps,
184 FLAC__Subframe *subframe
187 static unsigned evaluate_fixed_subframe_(
188 FLAC__StreamEncoder *encoder,
189 const FLAC__int32 signal[],
190 FLAC__int32 residual[],
191 FLAC__uint64 abs_residual_partition_sums[],
192 unsigned raw_bits_per_partition[],
194 unsigned subframe_bps,
196 unsigned rice_parameter,
197 unsigned rice_parameter_limit,
198 unsigned min_partition_order,
199 unsigned max_partition_order,
200 FLAC__bool do_escape_coding,
201 unsigned rice_parameter_search_dist,
202 FLAC__Subframe *subframe,
203 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
206 #ifndef FLAC__INTEGER_ONLY_LIBRARY
207 static unsigned evaluate_lpc_subframe_(
208 FLAC__StreamEncoder *encoder,
209 const FLAC__int32 signal[],
210 FLAC__int32 residual[],
211 FLAC__uint64 abs_residual_partition_sums[],
212 unsigned raw_bits_per_partition[],
213 const FLAC__real lp_coeff[],
215 unsigned subframe_bps,
217 unsigned qlp_coeff_precision,
218 unsigned rice_parameter,
219 unsigned rice_parameter_limit,
220 unsigned min_partition_order,
221 unsigned max_partition_order,
222 FLAC__bool do_escape_coding,
223 unsigned rice_parameter_search_dist,
224 FLAC__Subframe *subframe,
225 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
229 static unsigned evaluate_verbatim_subframe_(
230 FLAC__StreamEncoder *encoder,
231 const FLAC__int32 signal[],
233 unsigned subframe_bps,
234 FLAC__Subframe *subframe
237 static unsigned find_best_partition_order_(
238 struct FLAC__StreamEncoderPrivate *private_,
239 const FLAC__int32 residual[],
240 FLAC__uint64 abs_residual_partition_sums[],
241 unsigned raw_bits_per_partition[],
242 unsigned residual_samples,
243 unsigned predictor_order,
244 unsigned rice_parameter,
245 unsigned rice_parameter_limit,
246 unsigned min_partition_order,
247 unsigned max_partition_order,
249 FLAC__bool do_escape_coding,
250 unsigned rice_parameter_search_dist,
251 FLAC__EntropyCodingMethod *best_ecm
254 static void precompute_partition_info_sums_(
255 const FLAC__int32 residual[],
256 FLAC__uint64 abs_residual_partition_sums[],
257 unsigned residual_samples,
258 unsigned predictor_order,
259 unsigned min_partition_order,
260 unsigned max_partition_order,
264 static void precompute_partition_info_escapes_(
265 const FLAC__int32 residual[],
266 unsigned raw_bits_per_partition[],
267 unsigned residual_samples,
268 unsigned predictor_order,
269 unsigned min_partition_order,
270 unsigned max_partition_order
273 static FLAC__bool set_partitioned_rice_(
274 #ifdef EXACT_RICE_BITS_CALCULATION
275 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_limit,
283 const unsigned rice_parameter_search_dist,
284 const unsigned partition_order,
285 const FLAC__bool search_for_escapes,
286 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
290 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
292 /* verify-related routines: */
293 static void append_to_verify_fifo_(
294 verify_input_fifo *fifo,
295 const FLAC__int32 * const input[],
296 unsigned input_offset,
298 unsigned wide_samples
301 static void append_to_verify_fifo_interleaved_(
302 verify_input_fifo *fifo,
303 const FLAC__int32 input[],
304 unsigned input_offset,
306 unsigned wide_samples
309 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
310 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
311 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
312 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
314 static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
315 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
316 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
317 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);
318 static FILE *get_binary_stdout_(void);
321 /***********************************************************************
325 ***********************************************************************/
327 typedef struct FLAC__StreamEncoderPrivate {
328 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
329 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
330 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
331 #ifndef FLAC__INTEGER_ONLY_LIBRARY
332 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */
333 FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */
334 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
335 FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */
337 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
338 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
339 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
340 FLAC__int32 *residual_workspace_mid_side[2][2];
341 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
342 FLAC__Subframe subframe_workspace_mid_side[2][2];
343 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
344 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
345 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
346 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
347 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
348 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
349 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
350 unsigned best_subframe_mid_side[2];
351 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
352 unsigned best_subframe_bits_mid_side[2];
353 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
354 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
355 FLAC__BitWriter *frame; /* the current frame being worked on */
356 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
357 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
358 FLAC__ChannelAssignment last_channel_assignment;
359 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
360 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
361 unsigned current_sample_number;
362 unsigned current_frame_number;
363 FLAC__MD5Context md5context;
364 FLAC__CPUInfo cpuinfo;
365 #ifndef FLAC__INTEGER_ONLY_LIBRARY
366 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
368 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
370 #ifndef FLAC__INTEGER_ONLY_LIBRARY
371 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
372 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[]);
373 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[]);
374 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[]);
376 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
377 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
378 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
379 FLAC__bool disable_constant_subframes;
380 FLAC__bool disable_fixed_subframes;
381 FLAC__bool disable_verbatim_subframes;
385 FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
386 FLAC__StreamEncoderSeekCallback seek_callback;
387 FLAC__StreamEncoderTellCallback tell_callback;
388 FLAC__StreamEncoderWriteCallback write_callback;
389 FLAC__StreamEncoderMetadataCallback metadata_callback;
390 FLAC__StreamEncoderProgressCallback progress_callback;
392 unsigned first_seekpoint_to_check;
393 FILE *file; /* only used when encoding to a file */
394 FLAC__uint64 bytes_written;
395 FLAC__uint64 samples_written;
396 unsigned frames_written;
397 unsigned total_frames_estimate;
398 /* unaligned (original) pointers to allocated data */
399 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
400 FLAC__int32 *integer_signal_mid_side_unaligned[2];
401 #ifndef FLAC__INTEGER_ONLY_LIBRARY
402 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */
403 FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */
404 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
405 FLAC__real *windowed_signal_unaligned;
407 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
408 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
409 FLAC__uint64 *abs_residual_partition_sums_unaligned;
410 unsigned *raw_bits_per_partition_unaligned;
412 * These fields have been moved here from private function local
413 * declarations merely to save stack space during encoding.
415 #ifndef FLAC__INTEGER_ONLY_LIBRARY
416 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
418 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
420 * The data for the verify section
423 FLAC__StreamDecoder *decoder;
424 EncoderStateHint state_hint;
425 FLAC__bool needs_magic_hack;
426 verify_input_fifo input_fifo;
427 verify_output output;
429 FLAC__uint64 absolute_sample;
430 unsigned frame_number;
433 FLAC__int32 expected;
437 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
438 } FLAC__StreamEncoderPrivate;
440 /***********************************************************************
442 * Public static class data
444 ***********************************************************************/
446 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
447 "FLAC__STREAM_ENCODER_OK",
448 "FLAC__STREAM_ENCODER_UNINITIALIZED",
449 "FLAC__STREAM_ENCODER_OGG_ERROR",
450 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
451 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
452 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
453 "FLAC__STREAM_ENCODER_IO_ERROR",
454 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
455 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
458 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
459 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
460 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
461 "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
462 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
463 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
464 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
465 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
466 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
467 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
468 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
469 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
470 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
471 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
472 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
475 FLAC_API const char * const FLAC__treamEncoderReadStatusString[] = {
476 "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
477 "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
478 "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
479 "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
482 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
483 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
484 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
487 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
488 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
489 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
490 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
493 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
494 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
495 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
496 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
499 /* Number of samples that will be overread to watch for end of stream. By
500 * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
501 * always try to read blocksize+1 samples before encoding a block, so that
502 * even if the stream has a total sample count that is an integral multiple
503 * of the blocksize, we will still notice when we are encoding the last
504 * block. This is needed, for example, to correctly set the end-of-stream
505 * marker in Ogg FLAC.
507 * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
508 * not really any reason to change it.
510 static const unsigned OVERREAD_ = 1;
512 /***********************************************************************
514 * Class constructor/destructor
517 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void)
519 FLAC__StreamEncoder *encoder;
522 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
524 encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
529 encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
530 if(encoder->protected_ == 0) {
535 encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
536 if(encoder->private_ == 0) {
537 free(encoder->protected_);
542 encoder->private_->frame = FLAC__bitwriter_new();
543 if(encoder->private_->frame == 0) {
544 free(encoder->private_);
545 free(encoder->protected_);
550 encoder->private_->file = 0;
552 set_defaults_(encoder);
554 encoder->private_->is_being_deleted = false;
556 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
557 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
558 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
560 for(i = 0; i < 2; i++) {
561 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
562 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
564 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
565 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
566 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
568 for(i = 0; i < 2; i++) {
569 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
570 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
573 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
574 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
575 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
577 for(i = 0; i < 2; i++) {
578 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
579 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
581 for(i = 0; i < 2; i++)
582 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
584 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
589 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
593 FLAC__ASSERT(0 != encoder);
594 FLAC__ASSERT(0 != encoder->protected_);
595 FLAC__ASSERT(0 != encoder->private_);
596 FLAC__ASSERT(0 != encoder->private_->frame);
598 encoder->private_->is_being_deleted = true;
600 (void)FLAC__stream_encoder_finish(encoder);
602 if(0 != encoder->private_->verify.decoder)
603 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
605 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
606 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
607 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
609 for(i = 0; i < 2; i++) {
610 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
611 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
613 for(i = 0; i < 2; i++)
614 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
616 FLAC__bitwriter_delete(encoder->private_->frame);
617 free(encoder->private_);
618 free(encoder->protected_);
622 /***********************************************************************
624 * Public class methods
626 ***********************************************************************/
628 static FLAC__StreamEncoderInitStatus init_stream_internal_(
629 FLAC__StreamEncoder *encoder,
630 FLAC__StreamEncoderReadCallback read_callback,
631 FLAC__StreamEncoderWriteCallback write_callback,
632 FLAC__StreamEncoderSeekCallback seek_callback,
633 FLAC__StreamEncoderTellCallback tell_callback,
634 FLAC__StreamEncoderMetadataCallback metadata_callback,
640 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
642 FLAC__ASSERT(0 != encoder);
644 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
645 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
649 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
652 if(0 == write_callback || (seek_callback && 0 == tell_callback))
653 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
655 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
656 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
658 if(encoder->protected_->channels != 2) {
659 encoder->protected_->do_mid_side_stereo = false;
660 encoder->protected_->loose_mid_side_stereo = false;
662 else if(!encoder->protected_->do_mid_side_stereo)
663 encoder->protected_->loose_mid_side_stereo = false;
665 if(encoder->protected_->bits_per_sample >= 32)
666 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
668 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
669 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
671 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
672 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
674 if(encoder->protected_->blocksize == 0) {
675 if(encoder->protected_->max_lpc_order == 0)
676 encoder->protected_->blocksize = 1152;
678 encoder->protected_->blocksize = 4096;
681 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
682 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
684 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
685 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
687 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
688 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
690 if(encoder->protected_->qlp_coeff_precision == 0) {
691 if(encoder->protected_->bits_per_sample < 16) {
692 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
693 /* @@@ until then we'll make a guess */
694 encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
696 else if(encoder->protected_->bits_per_sample == 16) {
697 if(encoder->protected_->blocksize <= 192)
698 encoder->protected_->qlp_coeff_precision = 7;
699 else if(encoder->protected_->blocksize <= 384)
700 encoder->protected_->qlp_coeff_precision = 8;
701 else if(encoder->protected_->blocksize <= 576)
702 encoder->protected_->qlp_coeff_precision = 9;
703 else if(encoder->protected_->blocksize <= 1152)
704 encoder->protected_->qlp_coeff_precision = 10;
705 else if(encoder->protected_->blocksize <= 2304)
706 encoder->protected_->qlp_coeff_precision = 11;
707 else if(encoder->protected_->blocksize <= 4608)
708 encoder->protected_->qlp_coeff_precision = 12;
710 encoder->protected_->qlp_coeff_precision = 13;
713 if(encoder->protected_->blocksize <= 384)
714 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
715 else if(encoder->protected_->blocksize <= 1152)
716 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
718 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
720 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
722 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
723 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
725 if(encoder->protected_->streamable_subset) {
726 if(!FLAC__format_blocksize_is_subset(encoder->protected_->blocksize, encoder->protected_->sample_rate))
727 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
728 if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate))
729 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
731 encoder->protected_->bits_per_sample != 8 &&
732 encoder->protected_->bits_per_sample != 12 &&
733 encoder->protected_->bits_per_sample != 16 &&
734 encoder->protected_->bits_per_sample != 20 &&
735 encoder->protected_->bits_per_sample != 24
737 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
738 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
739 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
741 encoder->protected_->sample_rate <= 48000 &&
743 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
744 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
747 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
751 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
752 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
753 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
754 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
757 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
758 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
760 for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
761 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
762 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
764 encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
765 encoder->protected_->metadata[0] = vc;
771 /* keep track of any SEEKTABLE block */
772 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
774 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
775 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
776 encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
777 break; /* take only the first one */
782 /* validate metadata */
783 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
784 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
785 metadata_has_seektable = false;
786 metadata_has_vorbis_comment = false;
787 metadata_picture_has_type1 = false;
788 metadata_picture_has_type2 = false;
789 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
790 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
791 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
792 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
793 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
794 if(metadata_has_seektable) /* only one is allowed */
795 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
796 metadata_has_seektable = true;
797 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
798 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
800 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
801 if(metadata_has_vorbis_comment) /* only one is allowed */
802 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
803 metadata_has_vorbis_comment = true;
805 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
806 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
807 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
809 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
810 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
811 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
812 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
813 if(metadata_picture_has_type1) /* there should only be 1 per stream */
814 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
815 metadata_picture_has_type1 = true;
816 /* standard icon must be 32x32 pixel PNG */
818 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
820 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
821 m->data.picture.width != 32 ||
822 m->data.picture.height != 32
825 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
827 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
828 if(metadata_picture_has_type2) /* there should only be 1 per stream */
829 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
830 metadata_picture_has_type2 = true;
835 encoder->private_->input_capacity = 0;
836 for(i = 0; i < encoder->protected_->channels; i++) {
837 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
838 #ifndef FLAC__INTEGER_ONLY_LIBRARY
839 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
842 for(i = 0; i < 2; i++) {
843 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
844 #ifndef FLAC__INTEGER_ONLY_LIBRARY
845 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
848 #ifndef FLAC__INTEGER_ONLY_LIBRARY
849 for(i = 0; i < encoder->protected_->num_apodizations; i++)
850 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
851 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
853 for(i = 0; i < encoder->protected_->channels; i++) {
854 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
855 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
856 encoder->private_->best_subframe[i] = 0;
858 for(i = 0; i < 2; i++) {
859 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
860 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
861 encoder->private_->best_subframe_mid_side[i] = 0;
863 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
864 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
865 #ifndef FLAC__INTEGER_ONLY_LIBRARY
866 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
868 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
869 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
870 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
871 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
872 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
873 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
874 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);
876 if(encoder->private_->loose_mid_side_stereo_frames == 0)
877 encoder->private_->loose_mid_side_stereo_frames = 1;
878 encoder->private_->loose_mid_side_stereo_frame_count = 0;
879 encoder->private_->current_sample_number = 0;
880 encoder->private_->current_frame_number = 0;
882 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
883 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? */
884 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
887 * get the CPU info and set the function pointers
889 FLAC__cpu_info(&encoder->private_->cpuinfo);
890 /* first default to the non-asm routines */
891 #ifndef FLAC__INTEGER_ONLY_LIBRARY
892 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
894 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
895 #ifndef FLAC__INTEGER_ONLY_LIBRARY
896 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
897 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
898 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
900 /* now override with asm where appropriate */
901 #ifndef FLAC__INTEGER_ONLY_LIBRARY
902 # ifndef FLAC__NO_ASM
903 if(encoder->private_->cpuinfo.use_asm) {
904 # ifdef FLAC__CPU_IA32
905 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
906 # ifdef FLAC__HAS_NASM
907 if(encoder->private_->cpuinfo.data.ia32.sse) {
908 if(encoder->protected_->max_lpc_order < 4)
909 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
910 else if(encoder->protected_->max_lpc_order < 8)
911 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
912 else if(encoder->protected_->max_lpc_order < 12)
913 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
915 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
917 else if(encoder->private_->cpuinfo.data.ia32._3dnow)
918 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
920 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
921 if(encoder->private_->cpuinfo.data.ia32.mmx) {
922 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
923 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
926 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
927 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
929 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
930 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
931 # endif /* FLAC__HAS_NASM */
932 # endif /* FLAC__CPU_IA32 */
934 # endif /* !FLAC__NO_ASM */
935 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
936 /* finally override based on wide-ness if necessary */
937 if(encoder->private_->use_wide_by_block) {
938 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
941 /* set state to OK; from here on, errors are fatal and we'll override the state then */
942 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
945 encoder->private_->is_ogg = is_ogg;
946 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
947 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
948 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
952 encoder->private_->read_callback = read_callback;
953 encoder->private_->write_callback = write_callback;
954 encoder->private_->seek_callback = seek_callback;
955 encoder->private_->tell_callback = tell_callback;
956 encoder->private_->metadata_callback = metadata_callback;
957 encoder->private_->client_data = client_data;
959 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
960 /* the above function sets the state for us in case of an error */
961 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
964 if(!FLAC__bitwriter_init(encoder->private_->frame)) {
965 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
966 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
970 * Set up the verify stuff if necessary
972 if(encoder->protected_->verify) {
974 * First, set up the fifo which will hold the
975 * original signal to compare against
977 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
978 for(i = 0; i < encoder->protected_->channels; i++) {
979 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)safe_malloc_mul_2op_(sizeof(FLAC__int32), /*times*/encoder->private_->verify.input_fifo.size))) {
980 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
981 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
984 encoder->private_->verify.input_fifo.tail = 0;
987 * Now set up a stream decoder for verification
989 if(0 == encoder->private_->verify.decoder) {
990 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
991 if(0 == encoder->private_->verify.decoder) {
992 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
993 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
997 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) {
998 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
999 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1002 encoder->private_->verify.error_stats.absolute_sample = 0;
1003 encoder->private_->verify.error_stats.frame_number = 0;
1004 encoder->private_->verify.error_stats.channel = 0;
1005 encoder->private_->verify.error_stats.sample = 0;
1006 encoder->private_->verify.error_stats.expected = 0;
1007 encoder->private_->verify.error_stats.got = 0;
1010 * These must be done before we write any metadata, because that
1011 * calls the write_callback, which uses these values.
1013 encoder->private_->first_seekpoint_to_check = 0;
1014 encoder->private_->samples_written = 0;
1015 encoder->protected_->streaminfo_offset = 0;
1016 encoder->protected_->seektable_offset = 0;
1017 encoder->protected_->audio_offset = 0;
1020 * write the stream header
1022 if(encoder->protected_->verify)
1023 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1024 if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1025 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1026 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1028 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1029 /* the above function sets the state for us in case of an error */
1030 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1034 * write the STREAMINFO metadata block
1036 if(encoder->protected_->verify)
1037 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1038 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1039 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1040 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1041 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1042 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1043 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1044 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1045 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1046 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1047 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1048 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1049 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1050 if(encoder->protected_->do_md5)
1051 FLAC__MD5Init(&encoder->private_->md5context);
1052 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1053 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1054 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1056 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1057 /* the above function sets the state for us in case of an error */
1058 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1062 * Now that the STREAMINFO block is written, we can init this to an
1063 * absurdly-high value...
1065 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1066 /* ... and clear this to 0 */
1067 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1070 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1071 * if not, we will write an empty one (FLAC__add_metadata_block()
1072 * automatically supplies the vendor string).
1074 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1075 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1076 * true it will have already insured that the metadata list is properly
1079 if(!metadata_has_vorbis_comment) {
1080 FLAC__StreamMetadata vorbis_comment;
1081 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1082 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1083 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1084 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1085 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1086 vorbis_comment.data.vorbis_comment.num_comments = 0;
1087 vorbis_comment.data.vorbis_comment.comments = 0;
1088 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1089 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1090 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1092 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1093 /* the above function sets the state for us in case of an error */
1094 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1099 * write the user's metadata blocks
1101 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1102 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1103 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1104 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1105 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1107 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1108 /* the above function sets the state for us in case of an error */
1109 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1113 /* now that all the metadata is written, we save the stream offset */
1114 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 */
1115 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1116 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1119 if(encoder->protected_->verify)
1120 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1122 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1125 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1126 FLAC__StreamEncoder *encoder,
1127 FLAC__StreamEncoderWriteCallback write_callback,
1128 FLAC__StreamEncoderSeekCallback seek_callback,
1129 FLAC__StreamEncoderTellCallback tell_callback,
1130 FLAC__StreamEncoderMetadataCallback metadata_callback,
1134 return init_stream_internal_(
1136 /*read_callback=*/0,
1146 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1147 FLAC__StreamEncoder *encoder,
1148 FLAC__StreamEncoderReadCallback read_callback,
1149 FLAC__StreamEncoderWriteCallback write_callback,
1150 FLAC__StreamEncoderSeekCallback seek_callback,
1151 FLAC__StreamEncoderTellCallback tell_callback,
1152 FLAC__StreamEncoderMetadataCallback metadata_callback,
1156 return init_stream_internal_(
1168 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1169 FLAC__StreamEncoder *encoder,
1171 FLAC__StreamEncoderProgressCallback progress_callback,
1176 FLAC__StreamEncoderInitStatus init_status;
1178 FLAC__ASSERT(0 != encoder);
1179 FLAC__ASSERT(0 != file);
1181 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1182 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1184 /* double protection */
1186 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1187 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1191 * To make sure that our file does not go unclosed after an error, we
1192 * must assign the FILE pointer before any further error can occur in
1196 file = get_binary_stdout_(); /* just to be safe */
1198 encoder->private_->file = file;
1200 encoder->private_->progress_callback = progress_callback;
1201 encoder->private_->bytes_written = 0;
1202 encoder->private_->samples_written = 0;
1203 encoder->private_->frames_written = 0;
1205 init_status = init_stream_internal_(
1207 encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
1208 file_write_callback_,
1209 encoder->private_->file == stdout? 0 : file_seek_callback_,
1210 encoder->private_->file == stdout? 0 : file_tell_callback_,
1211 /*metadata_callback=*/0,
1215 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1216 /* the above function sets the state for us in case of an error */
1221 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1223 FLAC__ASSERT(blocksize != 0);
1224 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1230 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1231 FLAC__StreamEncoder *encoder,
1233 FLAC__StreamEncoderProgressCallback progress_callback,
1237 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1240 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1241 FLAC__StreamEncoder *encoder,
1243 FLAC__StreamEncoderProgressCallback progress_callback,
1247 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1250 static FLAC__StreamEncoderInitStatus init_file_internal_(
1251 FLAC__StreamEncoder *encoder,
1252 const char *filename,
1253 FLAC__StreamEncoderProgressCallback progress_callback,
1260 FLAC__ASSERT(0 != encoder);
1263 * To make sure that our file does not go unclosed after an error, we
1264 * have to do the same entrance checks here that are later performed
1265 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1267 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1268 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1270 file = filename? fopen(filename, "w+b") : stdout;
1273 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1274 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1277 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1280 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
1281 FLAC__StreamEncoder *encoder,
1282 const char *filename,
1283 FLAC__StreamEncoderProgressCallback progress_callback,
1287 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
1290 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1291 FLAC__StreamEncoder *encoder,
1292 const char *filename,
1293 FLAC__StreamEncoderProgressCallback progress_callback,
1297 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1300 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1302 FLAC__bool error = false;
1304 FLAC__ASSERT(0 != encoder);
1305 FLAC__ASSERT(0 != encoder->private_);
1306 FLAC__ASSERT(0 != encoder->protected_);
1308 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1311 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1312 if(encoder->private_->current_sample_number != 0) {
1313 const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
1314 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1315 if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
1320 if(encoder->protected_->do_md5)
1321 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1323 if(!encoder->private_->is_being_deleted) {
1324 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
1325 if(encoder->private_->seek_callback) {
1327 if(encoder->private_->is_ogg)
1328 update_ogg_metadata_(encoder);
1331 update_metadata_(encoder);
1333 /* check if an error occurred while updating metadata */
1334 if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
1337 if(encoder->private_->metadata_callback)
1338 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1341 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
1343 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1348 if(0 != encoder->private_->file) {
1349 if(encoder->private_->file != stdout)
1350 fclose(encoder->private_->file);
1351 encoder->private_->file = 0;
1355 if(encoder->private_->is_ogg)
1356 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1360 set_defaults_(encoder);
1363 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1368 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1370 FLAC__ASSERT(0 != encoder);
1371 FLAC__ASSERT(0 != encoder->private_);
1372 FLAC__ASSERT(0 != encoder->protected_);
1373 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1376 /* can't check encoder->private_->is_ogg since that's not set until init time */
1377 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1385 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1387 FLAC__ASSERT(0 != encoder);
1388 FLAC__ASSERT(0 != encoder->private_);
1389 FLAC__ASSERT(0 != encoder->protected_);
1390 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1392 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1393 encoder->protected_->verify = value;
1398 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1400 FLAC__ASSERT(0 != encoder);
1401 FLAC__ASSERT(0 != encoder->private_);
1402 FLAC__ASSERT(0 != encoder->protected_);
1403 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1405 encoder->protected_->streamable_subset = value;
1409 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value)
1411 FLAC__ASSERT(0 != encoder);
1412 FLAC__ASSERT(0 != encoder->private_);
1413 FLAC__ASSERT(0 != encoder->protected_);
1414 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1416 encoder->protected_->do_md5 = value;
1420 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1422 FLAC__ASSERT(0 != encoder);
1423 FLAC__ASSERT(0 != encoder->private_);
1424 FLAC__ASSERT(0 != encoder->protected_);
1425 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1427 encoder->protected_->channels = value;
1431 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1433 FLAC__ASSERT(0 != encoder);
1434 FLAC__ASSERT(0 != encoder->private_);
1435 FLAC__ASSERT(0 != encoder->protected_);
1436 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1438 encoder->protected_->bits_per_sample = value;
1442 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1444 FLAC__ASSERT(0 != encoder);
1445 FLAC__ASSERT(0 != encoder->private_);
1446 FLAC__ASSERT(0 != encoder->protected_);
1447 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1449 encoder->protected_->sample_rate = value;
1453 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1455 FLAC__bool ok = true;
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 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1462 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1463 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1464 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1465 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1468 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1469 /* but it's too hard to specify the string in a locale-specific way */
1471 encoder->protected_->num_apodizations = 1;
1472 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1473 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1476 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1477 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1478 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1479 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1480 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1481 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1482 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1483 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1487 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1489 FLAC__ASSERT(0 != encoder);
1490 FLAC__ASSERT(0 != encoder->private_);
1491 FLAC__ASSERT(0 != encoder->protected_);
1492 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1494 encoder->protected_->blocksize = value;
1498 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1500 FLAC__ASSERT(0 != encoder);
1501 FLAC__ASSERT(0 != encoder->private_);
1502 FLAC__ASSERT(0 != encoder->protected_);
1503 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1505 encoder->protected_->do_mid_side_stereo = value;
1509 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1511 FLAC__ASSERT(0 != encoder);
1512 FLAC__ASSERT(0 != encoder->private_);
1513 FLAC__ASSERT(0 != encoder->protected_);
1514 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1516 encoder->protected_->loose_mid_side_stereo = value;
1520 /*@@@@add to tests*/
1521 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1523 FLAC__ASSERT(0 != encoder);
1524 FLAC__ASSERT(0 != encoder->private_);
1525 FLAC__ASSERT(0 != encoder->protected_);
1526 FLAC__ASSERT(0 != specification);
1527 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1529 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1530 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1532 encoder->protected_->num_apodizations = 0;
1534 const char *s = strchr(specification, ';');
1535 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1536 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1537 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1538 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1539 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1540 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1541 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1542 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1543 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1544 else if(n==6 && 0 == strncmp("connes" , specification, n))
1545 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1546 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1547 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1548 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1549 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1550 if (stddev > 0.0 && stddev <= 0.5) {
1551 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1552 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1555 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1556 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1557 else if(n==4 && 0 == strncmp("hann" , specification, n))
1558 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1559 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1560 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1561 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1562 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1563 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1564 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1565 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1566 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1567 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1568 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1569 if (p >= 0.0 && p <= 1.0) {
1570 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1571 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1574 else if(n==5 && 0 == strncmp("welch" , specification, n))
1575 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1576 if (encoder->protected_->num_apodizations == 32)
1579 specification = s+1;
1583 if(encoder->protected_->num_apodizations == 0) {
1584 encoder->protected_->num_apodizations = 1;
1585 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1586 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1592 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1594 FLAC__ASSERT(0 != encoder);
1595 FLAC__ASSERT(0 != encoder->private_);
1596 FLAC__ASSERT(0 != encoder->protected_);
1597 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1599 encoder->protected_->max_lpc_order = value;
1603 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1605 FLAC__ASSERT(0 != encoder);
1606 FLAC__ASSERT(0 != encoder->private_);
1607 FLAC__ASSERT(0 != encoder->protected_);
1608 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1610 encoder->protected_->qlp_coeff_precision = value;
1614 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1616 FLAC__ASSERT(0 != encoder);
1617 FLAC__ASSERT(0 != encoder->private_);
1618 FLAC__ASSERT(0 != encoder->protected_);
1619 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1621 encoder->protected_->do_qlp_coeff_prec_search = value;
1625 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1627 FLAC__ASSERT(0 != encoder);
1628 FLAC__ASSERT(0 != encoder->private_);
1629 FLAC__ASSERT(0 != encoder->protected_);
1630 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1633 /*@@@ deprecated: */
1634 encoder->protected_->do_escape_coding = value;
1641 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1643 FLAC__ASSERT(0 != encoder);
1644 FLAC__ASSERT(0 != encoder->private_);
1645 FLAC__ASSERT(0 != encoder->protected_);
1646 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1648 encoder->protected_->do_exhaustive_model_search = value;
1652 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1654 FLAC__ASSERT(0 != encoder);
1655 FLAC__ASSERT(0 != encoder->private_);
1656 FLAC__ASSERT(0 != encoder->protected_);
1657 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1659 encoder->protected_->min_residual_partition_order = value;
1663 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1665 FLAC__ASSERT(0 != encoder);
1666 FLAC__ASSERT(0 != encoder->private_);
1667 FLAC__ASSERT(0 != encoder->protected_);
1668 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1670 encoder->protected_->max_residual_partition_order = value;
1674 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1676 FLAC__ASSERT(0 != encoder);
1677 FLAC__ASSERT(0 != encoder->private_);
1678 FLAC__ASSERT(0 != encoder->protected_);
1679 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1682 /*@@@ deprecated: */
1683 encoder->protected_->rice_parameter_search_dist = value;
1690 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1692 FLAC__ASSERT(0 != encoder);
1693 FLAC__ASSERT(0 != encoder->private_);
1694 FLAC__ASSERT(0 != encoder->protected_);
1695 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1697 encoder->protected_->total_samples_estimate = value;
1701 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1703 FLAC__ASSERT(0 != encoder);
1704 FLAC__ASSERT(0 != encoder->private_);
1705 FLAC__ASSERT(0 != encoder->protected_);
1706 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1712 /* realloc() does not do exactly what we want so... */
1713 if(encoder->protected_->metadata) {
1714 free(encoder->protected_->metadata);
1715 encoder->protected_->metadata = 0;
1716 encoder->protected_->num_metadata_blocks = 0;
1719 FLAC__StreamMetadata **m;
1720 if(0 == (m = (FLAC__StreamMetadata**)safe_malloc_mul_2op_(sizeof(m[0]), /*times*/num_blocks)))
1722 memcpy(m, metadata, sizeof(m[0]) * num_blocks);
1723 encoder->protected_->metadata = m;
1724 encoder->protected_->num_metadata_blocks = num_blocks;
1727 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1734 * These three functions are not static, but not publically exposed in
1735 * include/FLAC/ either. They are used by the test suite.
1737 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1739 FLAC__ASSERT(0 != encoder);
1740 FLAC__ASSERT(0 != encoder->private_);
1741 FLAC__ASSERT(0 != encoder->protected_);
1742 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1744 encoder->private_->disable_constant_subframes = value;
1748 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1750 FLAC__ASSERT(0 != encoder);
1751 FLAC__ASSERT(0 != encoder->private_);
1752 FLAC__ASSERT(0 != encoder->protected_);
1753 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1755 encoder->private_->disable_fixed_subframes = value;
1759 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1761 FLAC__ASSERT(0 != encoder);
1762 FLAC__ASSERT(0 != encoder->private_);
1763 FLAC__ASSERT(0 != encoder->protected_);
1764 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1766 encoder->private_->disable_verbatim_subframes = value;
1770 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1772 FLAC__ASSERT(0 != encoder);
1773 FLAC__ASSERT(0 != encoder->private_);
1774 FLAC__ASSERT(0 != encoder->protected_);
1775 return encoder->protected_->state;
1778 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1780 FLAC__ASSERT(0 != encoder);
1781 FLAC__ASSERT(0 != encoder->private_);
1782 FLAC__ASSERT(0 != encoder->protected_);
1783 if(encoder->protected_->verify)
1784 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1786 return FLAC__STREAM_DECODER_UNINITIALIZED;
1789 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1791 FLAC__ASSERT(0 != encoder);
1792 FLAC__ASSERT(0 != encoder->private_);
1793 FLAC__ASSERT(0 != encoder->protected_);
1794 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1795 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1797 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1800 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)
1802 FLAC__ASSERT(0 != encoder);
1803 FLAC__ASSERT(0 != encoder->private_);
1804 FLAC__ASSERT(0 != encoder->protected_);
1805 if(0 != absolute_sample)
1806 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1807 if(0 != frame_number)
1808 *frame_number = encoder->private_->verify.error_stats.frame_number;
1810 *channel = encoder->private_->verify.error_stats.channel;
1812 *sample = encoder->private_->verify.error_stats.sample;
1814 *expected = encoder->private_->verify.error_stats.expected;
1816 *got = encoder->private_->verify.error_stats.got;
1819 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1821 FLAC__ASSERT(0 != encoder);
1822 FLAC__ASSERT(0 != encoder->private_);
1823 FLAC__ASSERT(0 != encoder->protected_);
1824 return encoder->protected_->verify;
1827 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1829 FLAC__ASSERT(0 != encoder);
1830 FLAC__ASSERT(0 != encoder->private_);
1831 FLAC__ASSERT(0 != encoder->protected_);
1832 return encoder->protected_->streamable_subset;
1835 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder)
1837 FLAC__ASSERT(0 != encoder);
1838 FLAC__ASSERT(0 != encoder->private_);
1839 FLAC__ASSERT(0 != encoder->protected_);
1840 return encoder->protected_->do_md5;
1843 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1845 FLAC__ASSERT(0 != encoder);
1846 FLAC__ASSERT(0 != encoder->private_);
1847 FLAC__ASSERT(0 != encoder->protected_);
1848 return encoder->protected_->channels;
1851 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1853 FLAC__ASSERT(0 != encoder);
1854 FLAC__ASSERT(0 != encoder->private_);
1855 FLAC__ASSERT(0 != encoder->protected_);
1856 return encoder->protected_->bits_per_sample;
1859 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1861 FLAC__ASSERT(0 != encoder);
1862 FLAC__ASSERT(0 != encoder->private_);
1863 FLAC__ASSERT(0 != encoder->protected_);
1864 return encoder->protected_->sample_rate;
1867 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1869 FLAC__ASSERT(0 != encoder);
1870 FLAC__ASSERT(0 != encoder->private_);
1871 FLAC__ASSERT(0 != encoder->protected_);
1872 return encoder->protected_->blocksize;
1875 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1877 FLAC__ASSERT(0 != encoder);
1878 FLAC__ASSERT(0 != encoder->private_);
1879 FLAC__ASSERT(0 != encoder->protected_);
1880 return encoder->protected_->do_mid_side_stereo;
1883 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1885 FLAC__ASSERT(0 != encoder);
1886 FLAC__ASSERT(0 != encoder->private_);
1887 FLAC__ASSERT(0 != encoder->protected_);
1888 return encoder->protected_->loose_mid_side_stereo;
1891 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1893 FLAC__ASSERT(0 != encoder);
1894 FLAC__ASSERT(0 != encoder->private_);
1895 FLAC__ASSERT(0 != encoder->protected_);
1896 return encoder->protected_->max_lpc_order;
1899 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1901 FLAC__ASSERT(0 != encoder);
1902 FLAC__ASSERT(0 != encoder->private_);
1903 FLAC__ASSERT(0 != encoder->protected_);
1904 return encoder->protected_->qlp_coeff_precision;
1907 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1909 FLAC__ASSERT(0 != encoder);
1910 FLAC__ASSERT(0 != encoder->private_);
1911 FLAC__ASSERT(0 != encoder->protected_);
1912 return encoder->protected_->do_qlp_coeff_prec_search;
1915 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1917 FLAC__ASSERT(0 != encoder);
1918 FLAC__ASSERT(0 != encoder->private_);
1919 FLAC__ASSERT(0 != encoder->protected_);
1920 return encoder->protected_->do_escape_coding;
1923 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1925 FLAC__ASSERT(0 != encoder);
1926 FLAC__ASSERT(0 != encoder->private_);
1927 FLAC__ASSERT(0 != encoder->protected_);
1928 return encoder->protected_->do_exhaustive_model_search;
1931 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1933 FLAC__ASSERT(0 != encoder);
1934 FLAC__ASSERT(0 != encoder->private_);
1935 FLAC__ASSERT(0 != encoder->protected_);
1936 return encoder->protected_->min_residual_partition_order;
1939 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1941 FLAC__ASSERT(0 != encoder);
1942 FLAC__ASSERT(0 != encoder->private_);
1943 FLAC__ASSERT(0 != encoder->protected_);
1944 return encoder->protected_->max_residual_partition_order;
1947 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1949 FLAC__ASSERT(0 != encoder);
1950 FLAC__ASSERT(0 != encoder->private_);
1951 FLAC__ASSERT(0 != encoder->protected_);
1952 return encoder->protected_->rice_parameter_search_dist;
1955 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1957 FLAC__ASSERT(0 != encoder);
1958 FLAC__ASSERT(0 != encoder->private_);
1959 FLAC__ASSERT(0 != encoder->protected_);
1960 return encoder->protected_->total_samples_estimate;
1963 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1965 unsigned i, j = 0, channel;
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);
1974 const unsigned n = min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j);
1976 if(encoder->protected_->verify)
1977 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n);
1979 for(channel = 0; channel < channels; channel++)
1980 memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n);
1982 if(encoder->protected_->do_mid_side_stereo) {
1983 FLAC__ASSERT(channels == 2);
1984 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
1985 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
1986 encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j];
1987 encoder->private_->integer_signal_mid_side[0][i] = (buffer[0][j] + buffer[1][j]) >> 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
1993 encoder->private_->current_sample_number += n;
1995 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
1996 if(encoder->private_->current_sample_number > blocksize) {
1997 FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_);
1998 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
1999 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2001 /* move unprocessed overread samples to beginnings of arrays */
2002 for(channel = 0; channel < channels; channel++)
2003 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2004 if(encoder->protected_->do_mid_side_stereo) {
2005 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2006 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2008 encoder->private_->current_sample_number = 1;
2010 } while(j < samples);
2015 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2017 unsigned i, j, k, channel;
2018 FLAC__int32 x, mid, side;
2019 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2021 FLAC__ASSERT(0 != encoder);
2022 FLAC__ASSERT(0 != encoder->private_);
2023 FLAC__ASSERT(0 != encoder->protected_);
2024 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2028 * we have several flavors of the same basic loop, optimized for
2029 * different conditions:
2031 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2033 * stereo coding: unroll channel loop
2036 if(encoder->protected_->verify)
2037 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2039 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2040 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2041 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2043 encoder->private_->integer_signal[1][i] = x;
2046 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2047 encoder->private_->integer_signal_mid_side[1][i] = side;
2048 encoder->private_->integer_signal_mid_side[0][i] = mid;
2050 encoder->private_->current_sample_number = i;
2051 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2053 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2055 /* move unprocessed overread samples to beginnings of arrays */
2056 FLAC__ASSERT(i == blocksize+OVERREAD_);
2057 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2058 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize];
2059 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize];
2060 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2061 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2062 encoder->private_->current_sample_number = 1;
2064 } while(j < samples);
2068 * independent channel coding: buffer each channel in inner loop
2071 if(encoder->protected_->verify)
2072 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2074 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2075 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2076 for(channel = 0; channel < channels; channel++)
2077 encoder->private_->integer_signal[channel][i] = buffer[k++];
2079 encoder->private_->current_sample_number = i;
2080 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2082 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2084 /* move unprocessed overread samples to beginnings of arrays */
2085 FLAC__ASSERT(i == blocksize+OVERREAD_);
2086 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2087 for(channel = 0; channel < channels; channel++)
2088 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2089 encoder->private_->current_sample_number = 1;
2091 } while(j < samples);
2097 /***********************************************************************
2099 * Private class methods
2101 ***********************************************************************/
2103 void set_defaults_(FLAC__StreamEncoder *encoder)
2105 FLAC__ASSERT(0 != encoder);
2107 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2108 encoder->protected_->verify = true;
2110 encoder->protected_->verify = false;
2112 encoder->protected_->streamable_subset = true;
2113 encoder->protected_->do_md5 = true;
2114 encoder->protected_->do_mid_side_stereo = false;
2115 encoder->protected_->loose_mid_side_stereo = false;
2116 encoder->protected_->channels = 2;
2117 encoder->protected_->bits_per_sample = 16;
2118 encoder->protected_->sample_rate = 44100;
2119 encoder->protected_->blocksize = 0;
2120 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2121 encoder->protected_->num_apodizations = 1;
2122 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2123 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2125 encoder->protected_->max_lpc_order = 0;
2126 encoder->protected_->qlp_coeff_precision = 0;
2127 encoder->protected_->do_qlp_coeff_prec_search = false;
2128 encoder->protected_->do_exhaustive_model_search = false;
2129 encoder->protected_->do_escape_coding = false;
2130 encoder->protected_->min_residual_partition_order = 0;
2131 encoder->protected_->max_residual_partition_order = 0;
2132 encoder->protected_->rice_parameter_search_dist = 0;
2133 encoder->protected_->total_samples_estimate = 0;
2134 encoder->protected_->metadata = 0;
2135 encoder->protected_->num_metadata_blocks = 0;
2137 encoder->private_->seek_table = 0;
2138 encoder->private_->disable_constant_subframes = false;
2139 encoder->private_->disable_fixed_subframes = false;
2140 encoder->private_->disable_verbatim_subframes = false;
2142 encoder->private_->is_ogg = false;
2144 encoder->private_->read_callback = 0;
2145 encoder->private_->write_callback = 0;
2146 encoder->private_->seek_callback = 0;
2147 encoder->private_->tell_callback = 0;
2148 encoder->private_->metadata_callback = 0;
2149 encoder->private_->progress_callback = 0;
2150 encoder->private_->client_data = 0;
2153 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2156 FLAC__stream_encoder_set_compression_level(encoder, 5);
2159 void free_(FLAC__StreamEncoder *encoder)
2161 unsigned i, channel;
2163 FLAC__ASSERT(0 != encoder);
2164 if(encoder->protected_->metadata) {
2165 free(encoder->protected_->metadata);
2166 encoder->protected_->metadata = 0;
2167 encoder->protected_->num_metadata_blocks = 0;
2169 for(i = 0; i < encoder->protected_->channels; i++) {
2170 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2171 free(encoder->private_->integer_signal_unaligned[i]);
2172 encoder->private_->integer_signal_unaligned[i] = 0;
2174 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2175 if(0 != encoder->private_->real_signal_unaligned[i]) {
2176 free(encoder->private_->real_signal_unaligned[i]);
2177 encoder->private_->real_signal_unaligned[i] = 0;
2181 for(i = 0; i < 2; i++) {
2182 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2183 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2184 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2186 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2187 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2188 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2189 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2193 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2194 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2195 if(0 != encoder->private_->window_unaligned[i]) {
2196 free(encoder->private_->window_unaligned[i]);
2197 encoder->private_->window_unaligned[i] = 0;
2200 if(0 != encoder->private_->windowed_signal_unaligned) {
2201 free(encoder->private_->windowed_signal_unaligned);
2202 encoder->private_->windowed_signal_unaligned = 0;
2205 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2206 for(i = 0; i < 2; i++) {
2207 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2208 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2209 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2213 for(channel = 0; channel < 2; channel++) {
2214 for(i = 0; i < 2; i++) {
2215 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2216 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2217 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2221 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2222 free(encoder->private_->abs_residual_partition_sums_unaligned);
2223 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2225 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2226 free(encoder->private_->raw_bits_per_partition_unaligned);
2227 encoder->private_->raw_bits_per_partition_unaligned = 0;
2229 if(encoder->protected_->verify) {
2230 for(i = 0; i < encoder->protected_->channels; i++) {
2231 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2232 free(encoder->private_->verify.input_fifo.data[i]);
2233 encoder->private_->verify.input_fifo.data[i] = 0;
2237 FLAC__bitwriter_free(encoder->private_->frame);
2240 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2243 unsigned i, channel;
2245 FLAC__ASSERT(new_blocksize > 0);
2246 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2247 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2249 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2250 if(new_blocksize <= encoder->private_->input_capacity)
2255 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2256 * requires that the input arrays (in our case the integer signals)
2257 * have a buffer of up to 3 zeroes in front (at negative indices) for
2258 * alignment purposes; we use 4 in front to keep the data well-aligned.
2261 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2262 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2263 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2264 encoder->private_->integer_signal[i] += 4;
2265 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2266 #if 0 /* @@@ currently unused */
2267 if(encoder->protected_->max_lpc_order > 0)
2268 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2272 for(i = 0; ok && i < 2; i++) {
2273 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]);
2274 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2275 encoder->private_->integer_signal_mid_side[i] += 4;
2276 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2277 #if 0 /* @@@ currently unused */
2278 if(encoder->protected_->max_lpc_order > 0)
2279 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]);
2283 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2284 if(ok && encoder->protected_->max_lpc_order > 0) {
2285 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2286 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2287 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2290 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2291 for(i = 0; ok && i < 2; i++) {
2292 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2295 for(channel = 0; ok && channel < 2; channel++) {
2296 for(i = 0; ok && i < 2; i++) {
2297 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]);
2300 /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */
2301 /*@@@ new_blocksize*2 is too pessimistic, but to fix, we need smarter logic because a smaller new_blocksize can actually increase the # of partitions; would require moving this out into a separate function, then checking its capacity against the need of the current blocksize&min/max_partition_order (and maybe predictor order) */
2302 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2303 if(encoder->protected_->do_escape_coding)
2304 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2306 /* now adjust the windows if the blocksize has changed */
2307 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2308 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2309 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2310 switch(encoder->protected_->apodizations[i].type) {
2311 case FLAC__APODIZATION_BARTLETT:
2312 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2314 case FLAC__APODIZATION_BARTLETT_HANN:
2315 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2317 case FLAC__APODIZATION_BLACKMAN:
2318 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2320 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2321 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2323 case FLAC__APODIZATION_CONNES:
2324 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2326 case FLAC__APODIZATION_FLATTOP:
2327 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2329 case FLAC__APODIZATION_GAUSS:
2330 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2332 case FLAC__APODIZATION_HAMMING:
2333 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2335 case FLAC__APODIZATION_HANN:
2336 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2338 case FLAC__APODIZATION_KAISER_BESSEL:
2339 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2341 case FLAC__APODIZATION_NUTTALL:
2342 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2344 case FLAC__APODIZATION_RECTANGLE:
2345 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2347 case FLAC__APODIZATION_TRIANGLE:
2348 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2350 case FLAC__APODIZATION_TUKEY:
2351 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2353 case FLAC__APODIZATION_WELCH:
2354 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2358 /* double protection */
2359 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2367 encoder->private_->input_capacity = new_blocksize;
2369 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2374 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2376 const FLAC__byte *buffer;
2379 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2381 if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
2382 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2386 if(encoder->protected_->verify) {
2387 encoder->private_->verify.output.data = buffer;
2388 encoder->private_->verify.output.bytes = bytes;
2389 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2390 encoder->private_->verify.needs_magic_hack = true;
2393 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2394 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2395 FLAC__bitwriter_clear(encoder->private_->frame);
2396 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2397 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2403 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2404 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2405 FLAC__bitwriter_clear(encoder->private_->frame);
2406 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2410 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2411 FLAC__bitwriter_clear(encoder->private_->frame);
2414 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2415 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2421 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2423 FLAC__StreamEncoderWriteStatus status;
2424 FLAC__uint64 output_position = 0;
2426 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2427 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2428 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2429 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2433 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2436 FLAC__MetadataType type = (buffer[0] & 0x7f);
2437 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2438 encoder->protected_->streaminfo_offset = output_position;
2439 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2440 encoder->protected_->seektable_offset = output_position;
2444 * Mark the current seek point if hit (if audio_offset == 0 that
2445 * means we're still writing metadata and haven't hit the first
2448 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2449 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2450 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2451 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2452 FLAC__uint64 test_sample;
2454 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2455 test_sample = encoder->private_->seek_table->points[i].sample_number;
2456 if(test_sample > frame_last_sample) {
2459 else if(test_sample >= frame_first_sample) {
2460 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2461 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2462 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2463 encoder->private_->first_seekpoint_to_check++;
2464 /* DO NOT: "break;" and here's why:
2465 * The seektable template may contain more than one target
2466 * sample for any given frame; we will keep looping, generating
2467 * duplicate seekpoints for them, and we'll clean it up later,
2468 * just before writing the seektable back to the metadata.
2472 encoder->private_->first_seekpoint_to_check++;
2478 if(encoder->private_->is_ogg) {
2479 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2480 &encoder->protected_->ogg_encoder_aspect,
2484 encoder->private_->current_frame_number,
2486 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2488 encoder->private_->client_data
2493 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2495 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2496 encoder->private_->bytes_written += bytes;
2497 encoder->private_->samples_written += samples;
2498 /* we keep a high watermark on the number of frames written because
2499 * when the encoder goes back to write metadata, 'current_frame'
2500 * will drop back to 0.
2502 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2505 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2510 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2511 void update_metadata_(const FLAC__StreamEncoder *encoder)
2513 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2514 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2515 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2516 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2517 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2518 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2519 FLAC__StreamEncoderSeekStatus seek_status;
2521 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2523 /* All this is based on intimate knowledge of the stream header
2524 * layout, but a change to the header format that would break this
2525 * would also break all streams encoded in the previous format.
2529 * Write MD5 signature
2532 const unsigned md5_offset =
2533 FLAC__STREAM_METADATA_HEADER_LENGTH +
2535 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2536 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2537 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2538 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2539 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2540 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2541 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2542 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2545 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2546 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2547 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2550 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2551 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2557 * Write total samples
2560 const unsigned total_samples_byte_offset =
2561 FLAC__STREAM_METADATA_HEADER_LENGTH +
2563 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2564 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2565 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2566 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2567 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2568 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2569 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2573 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2574 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2575 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2576 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2577 b[4] = (FLAC__byte)(samples & 0xFF);
2578 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) {
2579 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2580 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2583 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2584 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2590 * Write min/max framesize
2593 const unsigned min_framesize_offset =
2594 FLAC__STREAM_METADATA_HEADER_LENGTH +
2596 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2597 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2600 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2601 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2602 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2603 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2604 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2605 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2606 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) {
2607 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2608 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2611 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2612 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2620 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2623 FLAC__format_seektable_sort(encoder->private_->seek_table);
2625 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2627 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) {
2628 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2629 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2633 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2636 xx = encoder->private_->seek_table->points[i].sample_number;
2637 b[7] = (FLAC__byte)xx; xx >>= 8;
2638 b[6] = (FLAC__byte)xx; xx >>= 8;
2639 b[5] = (FLAC__byte)xx; xx >>= 8;
2640 b[4] = (FLAC__byte)xx; xx >>= 8;
2641 b[3] = (FLAC__byte)xx; xx >>= 8;
2642 b[2] = (FLAC__byte)xx; xx >>= 8;
2643 b[1] = (FLAC__byte)xx; xx >>= 8;
2644 b[0] = (FLAC__byte)xx; xx >>= 8;
2645 xx = encoder->private_->seek_table->points[i].stream_offset;
2646 b[15] = (FLAC__byte)xx; xx >>= 8;
2647 b[14] = (FLAC__byte)xx; xx >>= 8;
2648 b[13] = (FLAC__byte)xx; xx >>= 8;
2649 b[12] = (FLAC__byte)xx; xx >>= 8;
2650 b[11] = (FLAC__byte)xx; xx >>= 8;
2651 b[10] = (FLAC__byte)xx; xx >>= 8;
2652 b[9] = (FLAC__byte)xx; xx >>= 8;
2653 b[8] = (FLAC__byte)xx; xx >>= 8;
2654 x = encoder->private_->seek_table->points[i].frame_samples;
2655 b[17] = (FLAC__byte)x; x >>= 8;
2656 b[16] = (FLAC__byte)x; x >>= 8;
2657 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2658 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2666 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2667 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2669 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2670 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2671 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2672 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2673 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2674 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2675 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2676 FLAC__STREAM_SYNC_LENGTH
2678 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2679 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2680 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2681 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2682 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2685 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2686 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2688 /* Pre-check that client supports seeking, since we don't want the
2689 * ogg_helper code to ever have to deal with this condition.
2691 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2694 /* All this is based on intimate knowledge of the stream header
2695 * layout, but a change to the header format that would break this
2696 * would also break all streams encoded in the previous format.
2700 ** Write STREAMINFO stats
2702 simple_ogg_page__init(&page);
2703 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2704 simple_ogg_page__clear(&page);
2705 return; /* state already set */
2709 * Write MD5 signature
2712 const unsigned md5_offset =
2713 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2714 FLAC__STREAM_METADATA_HEADER_LENGTH +
2716 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2717 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2718 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2719 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2720 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2721 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2722 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2723 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2726 if(md5_offset + 16 > (unsigned)page.body_len) {
2727 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2728 simple_ogg_page__clear(&page);
2731 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2735 * Write total samples
2738 const unsigned total_samples_byte_offset =
2739 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2740 FLAC__STREAM_METADATA_HEADER_LENGTH +
2742 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2743 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2744 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2745 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2746 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2747 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2748 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2752 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2753 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2754 simple_ogg_page__clear(&page);
2757 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2758 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2759 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2760 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2761 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2762 b[4] = (FLAC__byte)(samples & 0xFF);
2763 memcpy(page.body + total_samples_byte_offset, b, 5);
2767 * Write min/max framesize
2770 const unsigned min_framesize_offset =
2771 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2772 FLAC__STREAM_METADATA_HEADER_LENGTH +
2774 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2775 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2778 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
2779 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2780 simple_ogg_page__clear(&page);
2783 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2784 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2785 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2786 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2787 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2788 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2789 memcpy(page.body + min_framesize_offset, b, 6);
2791 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2792 simple_ogg_page__clear(&page);
2793 return; /* state already set */
2795 simple_ogg_page__clear(&page);
2800 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2804 FLAC__format_seektable_sort(encoder->private_->seek_table);
2806 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2808 simple_ogg_page__init(&page);
2809 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2810 simple_ogg_page__clear(&page);
2811 return; /* state already set */
2814 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
2815 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2816 simple_ogg_page__clear(&page);
2820 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
2823 xx = encoder->private_->seek_table->points[i].sample_number;
2824 b[7] = (FLAC__byte)xx; xx >>= 8;
2825 b[6] = (FLAC__byte)xx; xx >>= 8;
2826 b[5] = (FLAC__byte)xx; xx >>= 8;
2827 b[4] = (FLAC__byte)xx; xx >>= 8;
2828 b[3] = (FLAC__byte)xx; xx >>= 8;
2829 b[2] = (FLAC__byte)xx; xx >>= 8;
2830 b[1] = (FLAC__byte)xx; xx >>= 8;
2831 b[0] = (FLAC__byte)xx; xx >>= 8;
2832 xx = encoder->private_->seek_table->points[i].stream_offset;
2833 b[15] = (FLAC__byte)xx; xx >>= 8;
2834 b[14] = (FLAC__byte)xx; xx >>= 8;
2835 b[13] = (FLAC__byte)xx; xx >>= 8;
2836 b[12] = (FLAC__byte)xx; xx >>= 8;
2837 b[11] = (FLAC__byte)xx; xx >>= 8;
2838 b[10] = (FLAC__byte)xx; xx >>= 8;
2839 b[9] = (FLAC__byte)xx; xx >>= 8;
2840 b[8] = (FLAC__byte)xx; xx >>= 8;
2841 x = encoder->private_->seek_table->points[i].frame_samples;
2842 b[17] = (FLAC__byte)x; x >>= 8;
2843 b[16] = (FLAC__byte)x; x >>= 8;
2847 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2848 simple_ogg_page__clear(&page);
2849 return; /* state already set */
2851 simple_ogg_page__clear(&page);
2856 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
2859 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2862 * Accumulate raw signal to the MD5 signature
2864 if(encoder->protected_->do_md5 && !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)) {
2865 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2870 * Process the frame header and subframes into the frame bitbuffer
2872 if(!process_subframes_(encoder, is_fractional_block)) {
2873 /* the above function sets the state for us in case of an error */
2878 * Zero-pad the frame to a byte_boundary
2880 if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
2881 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2886 * CRC-16 the whole thing
2888 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2890 !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
2891 !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
2893 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2900 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
2901 /* the above function sets the state for us in case of an error */
2906 * Get ready for the next frame
2908 encoder->private_->current_sample_number = 0;
2909 encoder->private_->current_frame_number++;
2910 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
2915 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
2917 FLAC__FrameHeader frame_header;
2918 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
2919 FLAC__bool do_independent, do_mid_side;
2922 * Calculate the min,max Rice partition orders
2924 if(is_fractional_block) {
2925 max_partition_order = 0;
2928 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
2929 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
2931 min_partition_order = min(min_partition_order, max_partition_order);
2936 frame_header.blocksize = encoder->protected_->blocksize;
2937 frame_header.sample_rate = encoder->protected_->sample_rate;
2938 frame_header.channels = encoder->protected_->channels;
2939 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
2940 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
2941 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
2942 frame_header.number.frame_number = encoder->private_->current_frame_number;
2945 * Figure out what channel assignments to try
2947 if(encoder->protected_->do_mid_side_stereo) {
2948 if(encoder->protected_->loose_mid_side_stereo) {
2949 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
2950 do_independent = true;
2954 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
2955 do_mid_side = !do_independent;
2959 do_independent = true;
2964 do_independent = true;
2965 do_mid_side = false;
2968 FLAC__ASSERT(do_independent || do_mid_side);
2971 * Check for wasted bits; set effective bps for each subframe
2973 if(do_independent) {
2974 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2975 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
2976 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
2977 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
2981 FLAC__ASSERT(encoder->protected_->channels == 2);
2982 for(channel = 0; channel < 2; channel++) {
2983 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
2984 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
2985 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
2990 * First do a normal encoding pass of each independent channel
2992 if(do_independent) {
2993 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2997 min_partition_order,
2998 max_partition_order,
3000 encoder->private_->subframe_bps[channel],
3001 encoder->private_->integer_signal[channel],
3002 encoder->private_->subframe_workspace_ptr[channel],
3003 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
3004 encoder->private_->residual_workspace[channel],
3005 encoder->private_->best_subframe+channel,
3006 encoder->private_->best_subframe_bits+channel
3014 * Now do mid and side channels if requested
3017 FLAC__ASSERT(encoder->protected_->channels == 2);
3019 for(channel = 0; channel < 2; channel++) {
3023 min_partition_order,
3024 max_partition_order,
3026 encoder->private_->subframe_bps_mid_side[channel],
3027 encoder->private_->integer_signal_mid_side[channel],
3028 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3029 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3030 encoder->private_->residual_workspace_mid_side[channel],
3031 encoder->private_->best_subframe_mid_side+channel,
3032 encoder->private_->best_subframe_bits_mid_side+channel
3040 * Compose the frame bitbuffer
3043 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3044 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3045 FLAC__ChannelAssignment channel_assignment;
3047 FLAC__ASSERT(encoder->protected_->channels == 2);
3049 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3050 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3053 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3057 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
3058 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
3059 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
3060 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
3061 FLAC__ASSERT(do_independent && do_mid_side);
3063 /* We have to figure out which channel assignent results in the smallest frame */
3064 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3065 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3066 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3067 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3069 channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
3070 min_bits = bits[channel_assignment];
3071 for(ca = 1; ca <= 3; ca++) {
3072 if(bits[ca] < min_bits) {
3073 min_bits = bits[ca];
3074 channel_assignment = (FLAC__ChannelAssignment)ca;
3079 frame_header.channel_assignment = channel_assignment;
3081 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3082 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3086 switch(channel_assignment) {
3087 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3088 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3089 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3091 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3092 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3093 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3095 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3096 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3097 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3099 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3100 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3101 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3107 switch(channel_assignment) {
3108 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3109 left_bps = encoder->private_->subframe_bps [0];
3110 right_bps = encoder->private_->subframe_bps [1];
3112 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3113 left_bps = encoder->private_->subframe_bps [0];
3114 right_bps = encoder->private_->subframe_bps_mid_side[1];
3116 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3117 left_bps = encoder->private_->subframe_bps_mid_side[1];
3118 right_bps = encoder->private_->subframe_bps [1];
3120 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3121 left_bps = encoder->private_->subframe_bps_mid_side[0];
3122 right_bps = encoder->private_->subframe_bps_mid_side[1];
3128 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3129 if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
3131 if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
3135 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3136 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3140 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3141 if(!add_subframe_(encoder, frame_header.blocksize, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) {
3142 /* the above function sets the state for us in case of an error */
3148 if(encoder->protected_->loose_mid_side_stereo) {
3149 encoder->private_->loose_mid_side_stereo_frame_count++;
3150 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3151 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3154 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3159 FLAC__bool process_subframe_(
3160 FLAC__StreamEncoder *encoder,
3161 unsigned min_partition_order,
3162 unsigned max_partition_order,
3163 const FLAC__FrameHeader *frame_header,
3164 unsigned subframe_bps,
3165 const FLAC__int32 integer_signal[],
3166 FLAC__Subframe *subframe[2],
3167 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3168 FLAC__int32 *residual[2],
3169 unsigned *best_subframe,
3173 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3174 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3176 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3178 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3179 FLAC__double lpc_residual_bits_per_sample;
3180 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 */
3181 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3182 unsigned min_lpc_order, max_lpc_order, lpc_order;
3183 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3185 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3186 unsigned rice_parameter;
3187 unsigned _candidate_bits, _best_bits;
3188 unsigned _best_subframe;
3189 /* only use RICE2 partitions if stream bps > 16 */
3190 const unsigned rice_parameter_limit = FLAC__stream_encoder_get_bits_per_sample(encoder) > 16? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
3192 FLAC__ASSERT(frame_header->blocksize > 0);
3194 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3196 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3197 _best_bits = UINT_MAX;
3199 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3201 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3202 unsigned signal_is_constant = false;
3203 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);
3204 /* check for constant subframe */
3206 !encoder->private_->disable_constant_subframes &&
3207 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3208 fixed_residual_bits_per_sample[1] == 0.0
3210 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3213 /* the above means it's possible all samples are the same value; now double-check it: */
3215 signal_is_constant = true;
3216 for(i = 1; i < frame_header->blocksize; i++) {
3217 if(integer_signal[0] != integer_signal[i]) {
3218 signal_is_constant = false;
3223 if(signal_is_constant) {
3224 _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
3225 if(_candidate_bits < _best_bits) {
3226 _best_subframe = !_best_subframe;
3227 _best_bits = _candidate_bits;
3231 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3233 if(encoder->protected_->do_exhaustive_model_search) {
3234 min_fixed_order = 0;
3235 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3238 min_fixed_order = max_fixed_order = guess_fixed_order;
3240 if(max_fixed_order >= frame_header->blocksize)
3241 max_fixed_order = frame_header->blocksize - 1;
3242 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3243 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3244 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3245 continue; /* don't even try */
3246 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 */
3248 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3249 continue; /* don't even try */
3250 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 */
3252 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3253 if(rice_parameter >= rice_parameter_limit) {
3254 #ifdef DEBUG_VERBOSE
3255 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, rice_parameter_limit - 1);
3257 rice_parameter = rice_parameter_limit - 1;
3260 evaluate_fixed_subframe_(
3263 residual[!_best_subframe],
3264 encoder->private_->abs_residual_partition_sums,
3265 encoder->private_->raw_bits_per_partition,
3266 frame_header->blocksize,
3270 rice_parameter_limit,
3271 min_partition_order,
3272 max_partition_order,
3273 encoder->protected_->do_escape_coding,
3274 encoder->protected_->rice_parameter_search_dist,
3275 subframe[!_best_subframe],
3276 partitioned_rice_contents[!_best_subframe]
3278 if(_candidate_bits < _best_bits) {
3279 _best_subframe = !_best_subframe;
3280 _best_bits = _candidate_bits;
3285 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3287 if(encoder->protected_->max_lpc_order > 0) {
3288 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3289 max_lpc_order = frame_header->blocksize-1;
3291 max_lpc_order = encoder->protected_->max_lpc_order;
3292 if(max_lpc_order > 0) {
3294 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3295 FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3296 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3297 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3298 if(autoc[0] != 0.0) {
3299 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3300 if(encoder->protected_->do_exhaustive_model_search) {
3304 const unsigned guess_lpc_order =
3305 FLAC__lpc_compute_best_order(
3308 frame_header->blocksize,
3310 encoder->protected_->do_qlp_coeff_prec_search?
3311 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3312 encoder->protected_->qlp_coeff_precision
3315 min_lpc_order = max_lpc_order = guess_lpc_order;
3317 if(max_lpc_order >= frame_header->blocksize)
3318 max_lpc_order = frame_header->blocksize - 1;
3319 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3320 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3321 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3322 continue; /* don't even try */
3323 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3324 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3325 if(rice_parameter >= rice_parameter_limit) {
3326 #ifdef DEBUG_VERBOSE
3327 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, rice_parameter_limit - 1);
3329 rice_parameter = rice_parameter_limit - 1;
3331 if(encoder->protected_->do_qlp_coeff_prec_search) {
3332 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3333 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3334 if(subframe_bps <= 17) {
3335 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3336 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3339 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3342 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3344 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3346 evaluate_lpc_subframe_(
3349 residual[!_best_subframe],
3350 encoder->private_->abs_residual_partition_sums,
3351 encoder->private_->raw_bits_per_partition,
3352 encoder->private_->lp_coeff[lpc_order-1],
3353 frame_header->blocksize,
3356 qlp_coeff_precision,
3358 rice_parameter_limit,
3359 min_partition_order,
3360 max_partition_order,
3361 encoder->protected_->do_escape_coding,
3362 encoder->protected_->rice_parameter_search_dist,
3363 subframe[!_best_subframe],
3364 partitioned_rice_contents[!_best_subframe]
3366 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3367 if(_candidate_bits < _best_bits) {
3368 _best_subframe = !_best_subframe;
3369 _best_bits = _candidate_bits;
3378 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3382 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3383 if(_best_bits == UINT_MAX) {
3384 FLAC__ASSERT(_best_subframe == 0);
3385 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3388 *best_subframe = _best_subframe;
3389 *best_bits = _best_bits;
3394 FLAC__bool add_subframe_(
3395 FLAC__StreamEncoder *encoder,
3397 unsigned subframe_bps,
3398 const FLAC__Subframe *subframe,
3399 FLAC__BitWriter *frame
3402 switch(subframe->type) {
3403 case FLAC__SUBFRAME_TYPE_CONSTANT:
3404 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3405 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3409 case FLAC__SUBFRAME_TYPE_FIXED:
3410 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3411 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3415 case FLAC__SUBFRAME_TYPE_LPC:
3416 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3417 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3421 case FLAC__SUBFRAME_TYPE_VERBATIM:
3422 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3423 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3434 #define SPOTCHECK_ESTIMATE 0
3435 #if SPOTCHECK_ESTIMATE
3436 static void spotcheck_subframe_estimate_(
3437 FLAC__StreamEncoder *encoder,
3439 unsigned subframe_bps,
3440 const FLAC__Subframe *subframe,
3445 FLAC__BitWriter *frame = FLAC__bitwriter_new();
3447 fprintf(stderr, "EST: can't allocate frame\n");
3450 if(!FLAC__bitwriter_init(frame)) {
3451 fprintf(stderr, "EST: can't init frame\n");
3454 ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
3457 const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
3458 if(estimate != actual)
3459 fprintf(stderr, "EST: bad, frame#%u sub#%%d type=%8s est=%u, actual=%u, delta=%d\n", encoder->private_->current_frame_number, FLAC__SubframeTypeString[subframe->type], estimate, actual, (int)actual-(int)estimate);
3461 FLAC__bitwriter_delete(frame);
3465 unsigned evaluate_constant_subframe_(
3466 FLAC__StreamEncoder *encoder,
3467 const FLAC__int32 signal,
3469 unsigned subframe_bps,
3470 FLAC__Subframe *subframe
3474 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3475 subframe->data.constant.value = signal;
3477 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
3479 #if SPOTCHECK_ESTIMATE
3480 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3482 (void)encoder, (void)blocksize;
3488 unsigned evaluate_fixed_subframe_(
3489 FLAC__StreamEncoder *encoder,
3490 const FLAC__int32 signal[],
3491 FLAC__int32 residual[],
3492 FLAC__uint64 abs_residual_partition_sums[],
3493 unsigned raw_bits_per_partition[],
3495 unsigned subframe_bps,
3497 unsigned rice_parameter,
3498 unsigned rice_parameter_limit,
3499 unsigned min_partition_order,
3500 unsigned max_partition_order,
3501 FLAC__bool do_escape_coding,
3502 unsigned rice_parameter_search_dist,
3503 FLAC__Subframe *subframe,
3504 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3507 unsigned i, residual_bits, estimate;
3508 const unsigned residual_samples = blocksize - order;
3510 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3512 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3514 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3515 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3516 subframe->data.fixed.residual = residual;
3519 find_best_partition_order_(
3522 abs_residual_partition_sums,
3523 raw_bits_per_partition,
3527 rice_parameter_limit,
3528 min_partition_order,
3529 max_partition_order,
3532 rice_parameter_search_dist,
3533 &subframe->data.fixed.entropy_coding_method
3536 subframe->data.fixed.order = order;
3537 for(i = 0; i < order; i++)
3538 subframe->data.fixed.warmup[i] = signal[i];
3540 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
3542 #if SPOTCHECK_ESTIMATE
3543 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3549 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3550 unsigned evaluate_lpc_subframe_(
3551 FLAC__StreamEncoder *encoder,
3552 const FLAC__int32 signal[],
3553 FLAC__int32 residual[],
3554 FLAC__uint64 abs_residual_partition_sums[],
3555 unsigned raw_bits_per_partition[],
3556 const FLAC__real lp_coeff[],
3558 unsigned subframe_bps,
3560 unsigned qlp_coeff_precision,
3561 unsigned rice_parameter,
3562 unsigned rice_parameter_limit,
3563 unsigned min_partition_order,
3564 unsigned max_partition_order,
3565 FLAC__bool do_escape_coding,
3566 unsigned rice_parameter_search_dist,
3567 FLAC__Subframe *subframe,
3568 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3571 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3572 unsigned i, residual_bits, estimate;
3573 int quantization, ret;
3574 const unsigned residual_samples = blocksize - order;
3576 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3577 if(subframe_bps <= 16) {
3578 FLAC__ASSERT(order > 0);
3579 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3580 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3583 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3585 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3587 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3588 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3589 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3591 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3593 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3595 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3597 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3598 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3599 subframe->data.lpc.residual = residual;
3602 find_best_partition_order_(
3605 abs_residual_partition_sums,
3606 raw_bits_per_partition,
3610 rice_parameter_limit,
3611 min_partition_order,
3612 max_partition_order,
3615 rice_parameter_search_dist,
3616 &subframe->data.lpc.entropy_coding_method
3619 subframe->data.lpc.order = order;
3620 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3621 subframe->data.lpc.quantization_level = quantization;
3622 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3623 for(i = 0; i < order; i++)
3624 subframe->data.lpc.warmup[i] = signal[i];
3626 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits;
3628 #if SPOTCHECK_ESTIMATE
3629 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3636 unsigned evaluate_verbatim_subframe_(
3637 FLAC__StreamEncoder *encoder,
3638 const FLAC__int32 signal[],
3640 unsigned subframe_bps,
3641 FLAC__Subframe *subframe
3646 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3648 subframe->data.verbatim.data = signal;
3650 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
3652 #if SPOTCHECK_ESTIMATE
3653 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3661 unsigned find_best_partition_order_(
3662 FLAC__StreamEncoderPrivate *private_,
3663 const FLAC__int32 residual[],
3664 FLAC__uint64 abs_residual_partition_sums[],
3665 unsigned raw_bits_per_partition[],
3666 unsigned residual_samples,
3667 unsigned predictor_order,
3668 unsigned rice_parameter,
3669 unsigned rice_parameter_limit,
3670 unsigned min_partition_order,
3671 unsigned max_partition_order,
3673 FLAC__bool do_escape_coding,
3674 unsigned rice_parameter_search_dist,
3675 FLAC__EntropyCodingMethod *best_ecm
3678 unsigned residual_bits, best_residual_bits = 0;
3679 unsigned best_parameters_index = 0;
3680 unsigned best_partition_order = 0;
3681 const unsigned blocksize = residual_samples + predictor_order;
3683 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3684 min_partition_order = min(min_partition_order, max_partition_order);
3686 precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps);
3688 if(do_escape_coding)
3689 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3692 int partition_order;
3695 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3697 set_partitioned_rice_(
3698 #ifdef EXACT_RICE_BITS_CALCULATION
3701 abs_residual_partition_sums+sum,
3702 raw_bits_per_partition+sum,
3706 rice_parameter_limit,
3707 rice_parameter_search_dist,
3708 (unsigned)partition_order,
3710 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3715 FLAC__ASSERT(best_residual_bits != 0);
3718 sum += 1u << partition_order;
3719 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3720 best_residual_bits = residual_bits;
3721 best_parameters_index = !best_parameters_index;
3722 best_partition_order = partition_order;
3727 best_ecm->data.partitioned_rice.order = best_partition_order;
3731 * We are allowed to de-const the pointer based on our special
3732 * knowledge; it is const to the outside world.
3734 FLAC__EntropyCodingMethod_PartitionedRiceContents* prc = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_ecm->data.partitioned_rice.contents;
3737 /* save best parameters and raw_bits */
3738 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(prc, max(6, best_partition_order));
3739 memcpy(prc->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partition_order)));
3740 if(do_escape_coding)
3741 memcpy(prc->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partition_order)));
3743 * Now need to check if the type should be changed to
3744 * FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 based on the
3745 * size of the rice parameters.
3747 for(partition = 0; partition < (1u<<best_partition_order); partition++) {
3748 if(prc->parameters[partition] >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3749 best_ecm->type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2;
3755 return best_residual_bits;
3758 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3759 extern void precompute_partition_info_sums_32bit_asm_ia32_(
3760 const FLAC__int32 residual[],
3761 FLAC__uint64 abs_residual_partition_sums[],
3763 unsigned predictor_order,
3764 unsigned min_partition_order,
3765 unsigned max_partition_order
3769 void precompute_partition_info_sums_(
3770 const FLAC__int32 residual[],
3771 FLAC__uint64 abs_residual_partition_sums[],
3772 unsigned residual_samples,
3773 unsigned predictor_order,
3774 unsigned min_partition_order,
3775 unsigned max_partition_order,
3779 const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order;
3780 unsigned partitions = 1u << max_partition_order;
3782 FLAC__ASSERT(default_partition_samples > predictor_order);
3784 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3785 /* slightly pessimistic but still catches all common cases */
3786 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3787 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3788 precompute_partition_info_sums_32bit_asm_ia32_(residual, abs_residual_partition_sums, residual_samples + predictor_order, predictor_order, min_partition_order, max_partition_order);
3793 /* first do max_partition_order */
3795 unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order);
3796 /* slightly pessimistic but still catches all common cases */
3797 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3798 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3799 FLAC__uint32 abs_residual_partition_sum;
3801 for(partition = residual_sample = 0; partition < partitions; partition++) {
3802 end += default_partition_samples;
3803 abs_residual_partition_sum = 0;
3804 for( ; residual_sample < end; residual_sample++)
3805 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3806 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3809 else { /* have to pessimistically use 64 bits for accumulator */
3810 FLAC__uint64 abs_residual_partition_sum;
3812 for(partition = residual_sample = 0; partition < partitions; partition++) {
3813 end += default_partition_samples;
3814 abs_residual_partition_sum = 0;
3815 for( ; residual_sample < end; residual_sample++)
3816 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3817 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3822 /* now merge partitions for lower orders */
3824 unsigned from_partition = 0, to_partition = partitions;
3825 int partition_order;
3826 for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) {
3829 for(i = 0; i < partitions; i++) {
3830 abs_residual_partition_sums[to_partition++] =
3831 abs_residual_partition_sums[from_partition ] +
3832 abs_residual_partition_sums[from_partition+1];
3833 from_partition += 2;
3839 void precompute_partition_info_escapes_(
3840 const FLAC__int32 residual[],
3841 unsigned raw_bits_per_partition[],
3842 unsigned residual_samples,
3843 unsigned predictor_order,
3844 unsigned min_partition_order,
3845 unsigned max_partition_order
3848 int partition_order;
3849 unsigned from_partition, to_partition = 0;
3850 const unsigned blocksize = residual_samples + predictor_order;
3852 /* first do max_partition_order */
3853 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3856 unsigned partition, partition_sample, partition_samples, residual_sample;
3857 const unsigned partitions = 1u << partition_order;
3858 const unsigned default_partition_samples = blocksize >> partition_order;
3860 FLAC__ASSERT(default_partition_samples > predictor_order);
3862 for(partition = residual_sample = 0; partition < partitions; partition++) {
3863 partition_samples = default_partition_samples;
3865 partition_samples -= predictor_order;
3867 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3868 r = residual[residual_sample++];
3869 /* OPT: maybe faster: rmax |= r ^ (r>>31) */
3875 /* now we know all residual values are in the range [-rmax-1,rmax] */
3876 raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1;
3878 to_partition = partitions;
3879 break; /*@@@ yuck, should remove the 'for' loop instead */
3882 /* now merge partitions for lower orders */
3883 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3886 const unsigned partitions = 1u << partition_order;
3887 for(i = 0; i < partitions; i++) {
3888 m = raw_bits_per_partition[from_partition];
3890 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
3897 #ifdef EXACT_RICE_BITS_CALCULATION
3898 static FLaC__INLINE unsigned count_rice_bits_in_partition_(
3899 const unsigned rice_parameter,
3900 const unsigned partition_samples,
3901 const FLAC__int32 *residual
3904 unsigned i, partition_bits =
3905 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */
3906 (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
3908 for(i = 0; i < partition_samples; i++)
3909 partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
3910 return partition_bits;
3913 static FLaC__INLINE unsigned count_rice_bits_in_partition_(
3914 const unsigned rice_parameter,
3915 const unsigned partition_samples,
3916 const FLAC__uint64 abs_residual_partition_sum
3920 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */
3921 (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
3924 (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
3925 : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
3927 - (partition_samples >> 1)
3928 /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
3929 * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1)
3930 * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
3931 * So the subtraction term tries to guess how many extra bits were contributed.
3932 * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
3938 FLAC__bool set_partitioned_rice_(
3939 #ifdef EXACT_RICE_BITS_CALCULATION
3940 const FLAC__int32 residual[],
3942 const FLAC__uint64 abs_residual_partition_sums[],
3943 const unsigned raw_bits_per_partition[],
3944 const unsigned residual_samples,
3945 const unsigned predictor_order,
3946 const unsigned suggested_rice_parameter,
3947 const unsigned rice_parameter_limit,
3948 const unsigned rice_parameter_search_dist,
3949 const unsigned partition_order,
3950 const FLAC__bool search_for_escapes,
3951 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3955 unsigned rice_parameter, partition_bits;
3956 unsigned best_partition_bits, best_rice_parameter = 0;
3957 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3958 unsigned *parameters, *raw_bits;
3959 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3960 unsigned min_rice_parameter, max_rice_parameter;
3962 (void)rice_parameter_search_dist;
3965 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
3966 FLAC__ASSERT(rice_parameter_limit <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
3968 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
3969 parameters = partitioned_rice_contents->parameters;
3970 raw_bits = partitioned_rice_contents->raw_bits;
3972 if(partition_order == 0) {
3973 best_partition_bits = (unsigned)(-1);
3974 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3975 if(rice_parameter_search_dist) {
3976 if(suggested_rice_parameter < rice_parameter_search_dist)
3977 min_rice_parameter = 0;
3979 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
3980 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
3981 if(max_rice_parameter >= rice_parameter_limit) {
3982 #ifdef DEBUG_VERBOSE
3983 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, rice_parameter_limit - 1);
3985 max_rice_parameter = rice_parameter_limit - 1;
3989 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
3991 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3993 rice_parameter = suggested_rice_parameter;
3995 #ifdef EXACT_RICE_BITS_CALCULATION
3996 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual);
3998 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]);
4000 if(partition_bits < best_partition_bits) {
4001 best_rice_parameter = rice_parameter;
4002 best_partition_bits = partition_bits;
4004 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4007 if(search_for_escapes) {
4008 partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
4009 if(partition_bits <= best_partition_bits) {
4010 raw_bits[0] = raw_bits_per_partition[0];
4011 best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
4012 best_partition_bits = partition_bits;
4017 parameters[0] = best_rice_parameter;
4018 bits_ += best_partition_bits;
4021 unsigned partition, residual_sample;
4022 unsigned partition_samples;
4023 FLAC__uint64 mean, k;
4024 const unsigned partitions = 1u << partition_order;
4025 for(partition = residual_sample = 0; partition < partitions; partition++) {
4026 partition_samples = (residual_samples+predictor_order) >> partition_order;
4027 if(partition == 0) {
4028 if(partition_samples <= predictor_order)
4031 partition_samples -= predictor_order;
4033 mean = abs_residual_partition_sums[partition];
4034 /* we are basically calculating the size in bits of the
4035 * average residual magnitude in the partition:
4036 * rice_parameter = floor(log2(mean/partition_samples))
4037 * 'mean' is not a good name for the variable, it is
4038 * actually the sum of magnitudes of all residual values
4039 * in the partition, so the actual mean is
4040 * mean/partition_samples
4042 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4044 if(rice_parameter >= rice_parameter_limit) {
4045 #ifdef DEBUG_VERBOSE
4046 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, rice_parameter_limit - 1);
4048 rice_parameter = rice_parameter_limit - 1;
4051 best_partition_bits = (unsigned)(-1);
4052 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4053 if(rice_parameter_search_dist) {
4054 if(rice_parameter < rice_parameter_search_dist)
4055 min_rice_parameter = 0;
4057 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4058 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4059 if(max_rice_parameter >= rice_parameter_limit) {
4060 #ifdef DEBUG_VERBOSE
4061 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, rice_parameter_limit - 1);
4063 max_rice_parameter = rice_parameter_limit - 1;
4067 min_rice_parameter = max_rice_parameter = rice_parameter;
4069 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4071 #ifdef EXACT_RICE_BITS_CALCULATION
4072 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample);
4074 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]);
4076 if(partition_bits < best_partition_bits) {
4077 best_rice_parameter = rice_parameter;
4078 best_partition_bits = partition_bits;
4080 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4083 if(search_for_escapes) {
4084 partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
4085 if(partition_bits <= best_partition_bits) {
4086 raw_bits[partition] = raw_bits_per_partition[partition];
4087 best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
4088 best_partition_bits = partition_bits;
4091 raw_bits[partition] = 0;
4093 parameters[partition] = best_rice_parameter;
4094 bits_ += best_partition_bits;
4095 residual_sample += partition_samples;
4103 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4108 for(i = 0; i < samples && !(x&1); i++)
4115 for(shift = 0; !(x&1); shift++)
4120 for(i = 0; i < samples; i++)
4121 signal[i] >>= shift;
4127 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4131 for(channel = 0; channel < channels; channel++)
4132 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4134 fifo->tail += wide_samples;
4136 FLAC__ASSERT(fifo->tail <= fifo->size);
4139 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4142 unsigned sample, wide_sample;
4143 unsigned tail = fifo->tail;
4145 sample = input_offset * channels;
4146 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4147 for(channel = 0; channel < channels; channel++)
4148 fifo->data[channel][tail] = input[sample++];
4153 FLAC__ASSERT(fifo->tail <= fifo->size);
4156 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4158 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4159 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4162 if(encoder->private_->verify.needs_magic_hack) {
4163 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4164 *bytes = FLAC__STREAM_SYNC_LENGTH;
4165 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4166 encoder->private_->verify.needs_magic_hack = false;
4169 if(encoded_bytes == 0) {
4171 * If we get here, a FIFO underflow has occurred,
4172 * which means there is a bug somewhere.
4175 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4177 else if(encoded_bytes < *bytes)
4178 *bytes = encoded_bytes;
4179 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4180 encoder->private_->verify.output.data += *bytes;
4181 encoder->private_->verify.output.bytes -= *bytes;
4184 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4187 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4189 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4191 const unsigned channels = frame->header.channels;
4192 const unsigned blocksize = frame->header.blocksize;
4193 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4197 for(channel = 0; channel < channels; channel++) {
4198 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4199 unsigned i, sample = 0;
4200 FLAC__int32 expect = 0, got = 0;
4202 for(i = 0; i < blocksize; i++) {
4203 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4205 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4206 got = (FLAC__int32)buffer[channel][i];
4210 FLAC__ASSERT(i < blocksize);
4211 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4212 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4213 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4214 encoder->private_->verify.error_stats.channel = channel;
4215 encoder->private_->verify.error_stats.sample = sample;
4216 encoder->private_->verify.error_stats.expected = expect;
4217 encoder->private_->verify.error_stats.got = got;
4218 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4219 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4222 /* dequeue the frame from the fifo */
4223 encoder->private_->verify.input_fifo.tail -= blocksize;
4224 FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
4225 for(channel = 0; channel < channels; channel++)
4226 memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail * sizeof(encoder->private_->verify.input_fifo.data[0][0]));
4227 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4230 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4232 (void)decoder, (void)metadata, (void)client_data;
4235 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4237 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4238 (void)decoder, (void)status;
4239 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4242 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4246 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4248 if (feof(encoder->private_->file))
4249 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4250 else if (ferror(encoder->private_->file))
4251 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4253 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4256 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4260 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
4261 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4263 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4266 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4272 offset = ftello(encoder->private_->file);
4275 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4278 *absolute_byte_offset = (FLAC__uint64)offset;
4279 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4283 #ifdef FLAC__VALGRIND_TESTING
4284 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4286 size_t ret = fwrite(ptr, size, nmemb, stream);
4292 #define local__fwrite fwrite
4295 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4297 (void)client_data, (void)current_frame;
4299 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4300 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4302 /* We would like to be able to use 'samples > 0' in the
4303 * clause here but currently because of the nature of our
4304 * Ogg writing implementation, 'samples' is always 0 (see
4305 * ogg_encoder_aspect.c). The downside is extra progress
4308 encoder->private_->is_ogg? true :
4313 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4314 * because at this point in the callback chain, the stats
4315 * have not been updated. Only after we return and control
4316 * gets back to write_frame_() are the stats updated
4318 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);
4320 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4323 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4327 * This will forcibly set stdout to binary mode (for OSes that require it)
4329 FILE *get_binary_stdout_(void)
4331 /* if something breaks here it is probably due to the presence or
4332 * absence of an underscore before the identifiers 'setmode',
4333 * 'fileno', and/or 'O_BINARY'; check your system header files.
4335 #if defined _MSC_VER || defined __MINGW32__
4336 _setmode(_fileno(stdout), _O_BINARY);
4337 #elif defined __CYGWIN__
4338 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4339 setmode(_fileno(stdout), _O_BINARY);
4340 #elif defined __EMX__
4341 setmode(fileno(stdout), O_BINARY);