1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005,2006 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #undef WINDOW_DEBUG_OUTPUT
39 #if defined _MSC_VER || defined __MINGW32__
40 #include <io.h> /* for _setmode() */
41 #include <fcntl.h> /* for _O_BINARY */
43 #if defined __CYGWIN__ || defined __EMX__
44 #include <io.h> /* for setmode(), O_BINARY */
45 #include <fcntl.h> /* for _O_BINARY */
49 #include <stdlib.h> /* for malloc() */
50 #include <string.h> /* for memcpy() */
51 #include <sys/types.h> /* for off_t */
52 #if defined _MSC_VER || defined __MINGW32__
53 /*@@@ [2G limit] hacks for MSVC6 */
57 #include "FLAC/assert.h"
58 #include "FLAC/stream_decoder.h"
59 #include "protected/stream_encoder.h"
60 #include "private/bitbuffer.h"
61 #include "private/bitmath.h"
62 #include "private/crc.h"
63 #include "private/cpu.h"
64 #include "private/fixed.h"
65 #include "private/format.h"
66 #include "private/lpc.h"
67 #include "private/md5.h"
68 #include "private/memory.h"
69 #include "private/stream_encoder_framing.h"
70 #include "private/window.h"
75 #define min(x,y) ((x)<(y)?(x):(y))
80 #define max(x,y) ((x)>(y)?(x):(y))
83 FLAC__int32 *data[FLAC__MAX_CHANNELS];
84 unsigned size; /* of each data[] in samples */
89 const FLAC__byte *data;
96 ENCODER_IN_METADATA = 1,
100 /***********************************************************************
102 * Private class method prototypes
104 ***********************************************************************/
106 static void set_defaults_(FLAC__StreamEncoder *encoder);
107 static void free_(FLAC__StreamEncoder *encoder);
108 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_size);
109 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples);
110 static FLAC__StreamEncoderWriteStatus write_frame_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples);
111 static void update_metadata_(const FLAC__StreamEncoder *encoder);
112 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame);
113 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame);
115 static FLAC__bool process_subframe_(
116 FLAC__StreamEncoder *encoder,
117 unsigned min_partition_order,
118 unsigned max_partition_order,
119 FLAC__bool precompute_partition_sums,
120 const FLAC__FrameHeader *frame_header,
121 unsigned subframe_bps,
122 const FLAC__int32 integer_signal[],
123 #ifndef FLAC__INTEGER_ONLY_LIBRARY
124 const FLAC__real real_signal[],
126 FLAC__Subframe *subframe[2],
127 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
128 FLAC__int32 *residual[2],
129 unsigned *best_subframe,
131 #ifdef WINDOW_DEBUG_OUTPUT
132 ,unsigned subframe_number
136 static FLAC__bool add_subframe_(
137 FLAC__StreamEncoder *encoder,
138 const FLAC__FrameHeader *frame_header,
139 unsigned subframe_bps,
140 const FLAC__Subframe *subframe,
141 FLAC__BitBuffer *frame
142 #ifdef WINDOW_DEBUG_OUTPUT
143 ,unsigned subframe_bits
147 static unsigned evaluate_constant_subframe_(
148 const FLAC__int32 signal,
149 unsigned subframe_bps,
150 FLAC__Subframe *subframe
153 static unsigned evaluate_fixed_subframe_(
154 FLAC__StreamEncoder *encoder,
155 const FLAC__int32 signal[],
156 FLAC__int32 residual[],
157 FLAC__uint32 abs_residual[],
158 FLAC__uint64 abs_residual_partition_sums[],
159 unsigned raw_bits_per_partition[],
161 unsigned subframe_bps,
163 unsigned rice_parameter,
164 unsigned min_partition_order,
165 unsigned max_partition_order,
166 FLAC__bool precompute_partition_sums,
167 FLAC__bool do_escape_coding,
168 unsigned rice_parameter_search_dist,
169 FLAC__Subframe *subframe,
170 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
173 #ifndef FLAC__INTEGER_ONLY_LIBRARY
174 static unsigned evaluate_lpc_subframe_(
175 FLAC__StreamEncoder *encoder,
176 const FLAC__int32 signal[],
177 FLAC__int32 residual[],
178 FLAC__uint32 abs_residual[],
179 FLAC__uint64 abs_residual_partition_sums[],
180 unsigned raw_bits_per_partition[],
181 const FLAC__real lp_coeff[],
183 unsigned subframe_bps,
185 unsigned qlp_coeff_precision,
186 unsigned rice_parameter,
187 unsigned min_partition_order,
188 unsigned max_partition_order,
189 FLAC__bool precompute_partition_sums,
190 FLAC__bool do_escape_coding,
191 unsigned rice_parameter_search_dist,
192 FLAC__Subframe *subframe,
193 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
194 #ifdef WINDOW_DEBUG_OUTPUT
195 ,unsigned frame_number
196 ,unsigned subframe_number
197 ,FLAC__ApodizationSpecification aspec
202 static unsigned evaluate_verbatim_subframe_(
203 const FLAC__int32 signal[],
205 unsigned subframe_bps,
206 FLAC__Subframe *subframe
209 static unsigned find_best_partition_order_(
210 struct FLAC__StreamEncoderPrivate *private_,
211 const FLAC__int32 residual[],
212 FLAC__uint32 abs_residual[],
213 FLAC__uint64 abs_residual_partition_sums[],
214 unsigned raw_bits_per_partition[],
215 unsigned residual_samples,
216 unsigned predictor_order,
217 unsigned rice_parameter,
218 unsigned min_partition_order,
219 unsigned max_partition_order,
220 FLAC__bool precompute_partition_sums,
221 FLAC__bool do_escape_coding,
222 unsigned rice_parameter_search_dist,
223 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
226 static void precompute_partition_info_sums_(
227 const FLAC__uint32 abs_residual[],
228 FLAC__uint64 abs_residual_partition_sums[],
229 unsigned residual_samples,
230 unsigned predictor_order,
231 unsigned min_partition_order,
232 unsigned max_partition_order
235 static void precompute_partition_info_escapes_(
236 const FLAC__int32 residual[],
237 unsigned raw_bits_per_partition[],
238 unsigned residual_samples,
239 unsigned predictor_order,
240 unsigned min_partition_order,
241 unsigned max_partition_order
244 #ifdef DONT_ESTIMATE_RICE_BITS
245 static FLAC__bool set_partitioned_rice_(
246 const FLAC__uint32 abs_residual[],
247 const FLAC__int32 residual[],
248 const unsigned residual_samples,
249 const unsigned predictor_order,
250 const unsigned suggested_rice_parameter,
251 const unsigned rice_parameter_search_dist,
252 const unsigned partition_order,
253 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
257 static FLAC__bool set_partitioned_rice_with_precompute_(
258 const FLAC__int32 residual[],
259 const FLAC__uint64 abs_residual_partition_sums[],
260 const unsigned raw_bits_per_partition[],
261 const unsigned residual_samples,
262 const unsigned predictor_order,
263 const unsigned suggested_rice_parameter,
264 const unsigned rice_parameter_search_dist,
265 const unsigned partition_order,
266 const FLAC__bool search_for_escapes,
267 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
271 static FLAC__bool set_partitioned_rice_(
272 const FLAC__uint32 abs_residual[],
273 const unsigned residual_samples,
274 const unsigned predictor_order,
275 const unsigned suggested_rice_parameter,
276 const unsigned rice_parameter_search_dist,
277 const unsigned partition_order,
278 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
282 static FLAC__bool set_partitioned_rice_with_precompute_(
283 const FLAC__uint32 abs_residual[],
284 const FLAC__uint64 abs_residual_partition_sums[],
285 const unsigned raw_bits_per_partition[],
286 const unsigned residual_samples,
287 const unsigned predictor_order,
288 const unsigned suggested_rice_parameter,
289 const unsigned rice_parameter_search_dist,
290 const unsigned partition_order,
291 const FLAC__bool search_for_escapes,
292 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
297 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
299 /* verify-related routines: */
300 static void append_to_verify_fifo_(
301 verify_input_fifo *fifo,
302 const FLAC__int32 * const input[],
303 unsigned input_offset,
305 unsigned wide_samples
308 static void append_to_verify_fifo_interleaved_(
309 verify_input_fifo *fifo,
310 const FLAC__int32 input[],
311 unsigned input_offset,
313 unsigned wide_samples
316 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
317 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
318 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
319 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
321 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
322 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
323 static FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
324 static FILE *get_binary_stdout_();
326 #ifdef WINDOW_DEBUG_OUTPUT
327 static const char * const winstr[] = {
331 "blackman_harris_4term_92db_sidelobe",
346 /***********************************************************************
350 ***********************************************************************/
352 typedef struct FLAC__StreamEncoderPrivate {
353 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
354 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
355 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
356 #ifndef FLAC__INTEGER_ONLY_LIBRARY
357 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* the floating-point version of the input signal */
358 FLAC__real *real_signal_mid_side[2]; /* the floating-point version of the mid-side input signal (stereo only) */
359 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
360 FLAC__real *windowed_signal; /* the real_signal[] * current window[] */
362 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
363 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
364 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
365 FLAC__int32 *residual_workspace_mid_side[2][2];
366 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
367 FLAC__Subframe subframe_workspace_mid_side[2][2];
368 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
369 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
370 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
371 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
372 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
373 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
374 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index into the above workspaces */
375 unsigned best_subframe_mid_side[2];
376 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
377 unsigned best_subframe_bits_mid_side[2];
378 FLAC__uint32 *abs_residual; /* workspace where abs(candidate residual) is stored */
379 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
380 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
381 FLAC__BitBuffer *frame; /* the current frame being worked on */
382 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
383 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
384 FLAC__ChannelAssignment last_channel_assignment;
385 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
386 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
387 unsigned current_sample_number;
388 unsigned current_frame_number;
389 struct FLAC__MD5Context md5context;
390 FLAC__CPUInfo cpuinfo;
391 #ifndef FLAC__INTEGER_ONLY_LIBRARY
392 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
394 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
396 #ifndef FLAC__INTEGER_ONLY_LIBRARY
397 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
398 void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
399 void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
400 void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
402 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
403 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
404 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
405 FLAC__bool precompute_partition_sums; /* our initial guess as to whether precomputing the partitions sums will be a speed improvement */
406 FLAC__bool disable_constant_subframes;
407 FLAC__bool disable_fixed_subframes;
408 FLAC__bool disable_verbatim_subframes;
409 FLAC__StreamEncoderSeekCallback seek_callback;
410 FLAC__StreamEncoderTellCallback tell_callback;
411 FLAC__StreamEncoderWriteCallback write_callback;
412 FLAC__StreamEncoderMetadataCallback metadata_callback;
413 FLAC__StreamEncoderProgressCallback progress_callback;
415 unsigned first_seekpoint_to_check;
416 FILE *file; /* only used when encoding to a file */
417 FLAC__uint64 bytes_written;
418 FLAC__uint64 samples_written;
419 unsigned frames_written;
420 unsigned total_frames_estimate;
421 /* unaligned (original) pointers to allocated data */
422 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
423 FLAC__int32 *integer_signal_mid_side_unaligned[2];
424 #ifndef FLAC__INTEGER_ONLY_LIBRARY
425 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS];
426 FLAC__real *real_signal_mid_side_unaligned[2];
427 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
428 FLAC__real *windowed_signal_unaligned;
430 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
431 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
432 FLAC__uint32 *abs_residual_unaligned;
433 FLAC__uint64 *abs_residual_partition_sums_unaligned;
434 unsigned *raw_bits_per_partition_unaligned;
436 * These fields have been moved here from private function local
437 * declarations merely to save stack space during encoding.
439 #ifndef FLAC__INTEGER_ONLY_LIBRARY
440 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
442 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
444 * The data for the verify section
447 FLAC__StreamDecoder *decoder;
448 EncoderStateHint state_hint;
449 FLAC__bool needs_magic_hack;
450 verify_input_fifo input_fifo;
451 verify_output output;
453 FLAC__uint64 absolute_sample;
454 unsigned frame_number;
457 FLAC__int32 expected;
461 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
462 } FLAC__StreamEncoderPrivate;
464 /***********************************************************************
466 * Public static class data
468 ***********************************************************************/
470 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
471 "FLAC__STREAM_ENCODER_OK",
472 "FLAC__STREAM_ENCODER_UNINITIALIZED",
473 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
474 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
475 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
476 "FLAC__STREAM_ENCODER_IO_ERROR",
477 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
478 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
481 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
482 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
483 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
484 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
485 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
486 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
487 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
488 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
489 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
490 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
491 "FLAC__STREAM_ENCODER_INIT_STATUS_MID_SIDE_CHANNELS_MISMATCH",
492 "FLAC__STREAM_ENCODER_INIT_STATUS_MID_SIDE_SAMPLE_SIZE_MISMATCH",
493 "FLAC__STREAM_ENCODER_INIT_STATUS_ILLEGAL_MID_SIDE_FORCE",
494 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
495 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
496 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
497 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
500 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
501 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
502 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
505 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
506 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
507 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
508 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
511 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
512 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
513 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
514 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
517 /***********************************************************************
519 * Class constructor/destructor
522 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new()
524 FLAC__StreamEncoder *encoder;
527 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
529 encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
534 encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
535 if(encoder->protected_ == 0) {
540 encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
541 if(encoder->private_ == 0) {
542 free(encoder->protected_);
547 encoder->private_->frame = FLAC__bitbuffer_new();
548 if(encoder->private_->frame == 0) {
549 free(encoder->private_);
550 free(encoder->protected_);
555 encoder->private_->file = 0;
557 set_defaults_(encoder);
559 encoder->private_->is_being_deleted = false;
561 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
562 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
563 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
565 for(i = 0; i < 2; i++) {
566 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
567 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
569 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
570 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
571 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
573 for(i = 0; i < 2; i++) {
574 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
575 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
578 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
579 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
580 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
582 for(i = 0; i < 2; i++) {
583 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
584 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
586 for(i = 0; i < 2; i++)
587 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
589 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
594 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
598 FLAC__ASSERT(0 != encoder);
599 FLAC__ASSERT(0 != encoder->protected_);
600 FLAC__ASSERT(0 != encoder->private_);
601 FLAC__ASSERT(0 != encoder->private_->frame);
603 encoder->private_->is_being_deleted = true;
605 FLAC__stream_encoder_finish(encoder);
607 if(0 != encoder->private_->verify.decoder)
608 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
610 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
611 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
612 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
614 for(i = 0; i < 2; i++) {
615 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
616 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
618 for(i = 0; i < 2; i++)
619 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
621 FLAC__bitbuffer_delete(encoder->private_->frame);
622 free(encoder->private_);
623 free(encoder->protected_);
627 /***********************************************************************
629 * Public class methods
631 ***********************************************************************/
633 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(FLAC__StreamEncoder *encoder, FLAC__StreamEncoderWriteCallback write_callback, FLAC__StreamEncoderSeekCallback seek_callback, FLAC__StreamEncoderTellCallback tell_callback, FLAC__StreamEncoderMetadataCallback metadata_callback, void *client_data)
636 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment;
638 FLAC__ASSERT(0 != encoder);
640 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
641 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
643 if(0 == write_callback || (seek_callback && 0 == tell_callback))
644 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
646 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
647 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
649 if(encoder->protected_->do_mid_side_stereo && encoder->protected_->channels != 2)
650 return FLAC__STREAM_ENCODER_INIT_STATUS_MID_SIDE_CHANNELS_MISMATCH;
652 if(encoder->protected_->loose_mid_side_stereo && !encoder->protected_->do_mid_side_stereo)
653 return FLAC__STREAM_ENCODER_INIT_STATUS_ILLEGAL_MID_SIDE_FORCE;
655 if(encoder->protected_->bits_per_sample >= 32)
656 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
658 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
659 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
661 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
662 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
664 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
665 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
667 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
668 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
670 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
671 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
673 if(encoder->protected_->qlp_coeff_precision == 0) {
674 if(encoder->protected_->bits_per_sample < 16) {
675 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
676 /* @@@ until then we'll make a guess */
677 encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
679 else if(encoder->protected_->bits_per_sample == 16) {
680 if(encoder->protected_->blocksize <= 192)
681 encoder->protected_->qlp_coeff_precision = 7;
682 else if(encoder->protected_->blocksize <= 384)
683 encoder->protected_->qlp_coeff_precision = 8;
684 else if(encoder->protected_->blocksize <= 576)
685 encoder->protected_->qlp_coeff_precision = 9;
686 else if(encoder->protected_->blocksize <= 1152)
687 encoder->protected_->qlp_coeff_precision = 10;
688 else if(encoder->protected_->blocksize <= 2304)
689 encoder->protected_->qlp_coeff_precision = 11;
690 else if(encoder->protected_->blocksize <= 4608)
691 encoder->protected_->qlp_coeff_precision = 12;
693 encoder->protected_->qlp_coeff_precision = 13;
696 if(encoder->protected_->blocksize <= 384)
697 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
698 else if(encoder->protected_->blocksize <= 1152)
699 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
701 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
703 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
705 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
706 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
708 if(encoder->protected_->streamable_subset) {
710 encoder->protected_->blocksize != 192 &&
711 encoder->protected_->blocksize != 576 &&
712 encoder->protected_->blocksize != 1152 &&
713 encoder->protected_->blocksize != 2304 &&
714 encoder->protected_->blocksize != 4608 &&
715 encoder->protected_->blocksize != 256 &&
716 encoder->protected_->blocksize != 512 &&
717 encoder->protected_->blocksize != 1024 &&
718 encoder->protected_->blocksize != 2048 &&
719 encoder->protected_->blocksize != 4096 &&
720 encoder->protected_->blocksize != 8192 &&
721 encoder->protected_->blocksize != 16384
723 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
725 encoder->protected_->sample_rate != 8000 &&
726 encoder->protected_->sample_rate != 16000 &&
727 encoder->protected_->sample_rate != 22050 &&
728 encoder->protected_->sample_rate != 24000 &&
729 encoder->protected_->sample_rate != 32000 &&
730 encoder->protected_->sample_rate != 44100 &&
731 encoder->protected_->sample_rate != 48000 &&
732 encoder->protected_->sample_rate != 96000
734 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
736 encoder->protected_->bits_per_sample != 8 &&
737 encoder->protected_->bits_per_sample != 12 &&
738 encoder->protected_->bits_per_sample != 16 &&
739 encoder->protected_->bits_per_sample != 20 &&
740 encoder->protected_->bits_per_sample != 24
742 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
743 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
744 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
747 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
748 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
749 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
750 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
752 /* validate metadata */
753 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
754 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
755 metadata_has_seektable = false;
756 metadata_has_vorbis_comment = false;
757 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
758 if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_STREAMINFO)
759 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
760 else if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
761 if(metadata_has_seektable) /* only one is allowed */
762 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
763 metadata_has_seektable = true;
764 if(!FLAC__format_seektable_is_legal(&encoder->protected_->metadata[i]->data.seek_table))
765 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
767 else if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
768 if(metadata_has_vorbis_comment) /* only one is allowed */
769 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
770 metadata_has_vorbis_comment = true;
772 else if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_CUESHEET) {
773 if(!FLAC__format_cuesheet_is_legal(&encoder->protected_->metadata[i]->data.cue_sheet, encoder->protected_->metadata[i]->data.cue_sheet.is_cd, /*violation=*/0))
774 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
778 encoder->private_->input_capacity = 0;
779 for(i = 0; i < encoder->protected_->channels; i++) {
780 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
781 #ifndef FLAC__INTEGER_ONLY_LIBRARY
782 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
785 for(i = 0; i < 2; i++) {
786 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
787 #ifndef FLAC__INTEGER_ONLY_LIBRARY
788 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
791 #ifndef FLAC__INTEGER_ONLY_LIBRARY
792 for(i = 0; i < encoder->protected_->num_apodizations; i++)
793 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
794 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
796 for(i = 0; i < encoder->protected_->channels; i++) {
797 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
798 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
799 encoder->private_->best_subframe[i] = 0;
801 for(i = 0; i < 2; i++) {
802 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
803 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
804 encoder->private_->best_subframe_mid_side[i] = 0;
806 encoder->private_->abs_residual_unaligned = encoder->private_->abs_residual = 0;
807 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
808 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
809 #ifndef FLAC__INTEGER_ONLY_LIBRARY
810 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
812 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
813 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
814 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
815 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
816 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
817 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
818 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);
820 if(encoder->private_->loose_mid_side_stereo_frames == 0)
821 encoder->private_->loose_mid_side_stereo_frames = 1;
822 encoder->private_->loose_mid_side_stereo_frame_count = 0;
823 encoder->private_->current_sample_number = 0;
824 encoder->private_->current_frame_number = 0;
826 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
827 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? */
828 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
831 * get the CPU info and set the function pointers
833 FLAC__cpu_info(&encoder->private_->cpuinfo);
834 /* first default to the non-asm routines */
835 #ifndef FLAC__INTEGER_ONLY_LIBRARY
836 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
838 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
839 #ifndef FLAC__INTEGER_ONLY_LIBRARY
840 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
841 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
842 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
844 /* now override with asm where appropriate */
845 #ifndef FLAC__INTEGER_ONLY_LIBRARY
846 # ifndef FLAC__NO_ASM
847 if(encoder->private_->cpuinfo.use_asm) {
848 # ifdef FLAC__CPU_IA32
849 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
850 # ifdef FLAC__HAS_NASM
852 if(encoder->private_->cpuinfo.data.ia32.sse) {
853 if(encoder->protected_->max_lpc_order < 4)
854 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
855 else if(encoder->protected_->max_lpc_order < 8)
856 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
857 else if(encoder->protected_->max_lpc_order < 12)
858 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
860 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
863 # endif /* FLAC__SSE_OS */
864 if(encoder->private_->cpuinfo.data.ia32._3dnow)
865 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
867 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
868 if(encoder->private_->cpuinfo.data.ia32.mmx) {
869 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
870 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
873 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
874 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
876 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
877 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
878 # endif /* FLAC__HAS_NASM */
879 # endif /* FLAC__CPU_IA32 */
881 # endif /* !FLAC__NO_ASM */
882 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
883 /* finally override based on wide-ness if necessary */
884 if(encoder->private_->use_wide_by_block) {
885 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
888 /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */
889 encoder->private_->precompute_partition_sums = (encoder->protected_->max_residual_partition_order > encoder->protected_->min_residual_partition_order) || encoder->protected_->do_escape_coding;
891 /* set state to OK; from here on, errors are fatal and we'll override the state then */
892 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
894 encoder->private_->write_callback = write_callback;
895 encoder->private_->seek_callback = seek_callback;
896 encoder->private_->tell_callback = tell_callback;
897 encoder->private_->metadata_callback = metadata_callback;
898 encoder->private_->client_data = client_data;
900 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
901 /* the above function sets the state for us in case of an error */
902 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
905 if(!FLAC__bitbuffer_init(encoder->private_->frame)) {
906 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
907 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
911 * Set up the verify stuff if necessary
913 if(encoder->protected_->verify) {
915 * First, set up the fifo which will hold the
916 * original signal to compare against
918 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize;
919 for(i = 0; i < encoder->protected_->channels; i++) {
920 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size))) {
921 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
922 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
925 encoder->private_->verify.input_fifo.tail = 0;
928 * Now set up a stream decoder for verification
930 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
931 if(0 == encoder->private_->verify.decoder) {
932 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
933 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
936 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) {
937 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
938 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
941 encoder->private_->verify.error_stats.absolute_sample = 0;
942 encoder->private_->verify.error_stats.frame_number = 0;
943 encoder->private_->verify.error_stats.channel = 0;
944 encoder->private_->verify.error_stats.sample = 0;
945 encoder->private_->verify.error_stats.expected = 0;
946 encoder->private_->verify.error_stats.got = 0;
949 * These must be done before we write any metadata, because that
950 * calls the write_callback, which uses these values.
952 encoder->private_->first_seekpoint_to_check = 0;
953 encoder->private_->samples_written = 0;
954 encoder->protected_->streaminfo_offset = 0;
955 encoder->protected_->seektable_offset = 0;
956 encoder->protected_->audio_offset = 0;
959 * write the stream header
961 if(encoder->protected_->verify)
962 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
963 if(!FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
964 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
965 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
967 if(!write_bitbuffer_(encoder, 0)) {
968 /* the above function sets the state for us in case of an error */
969 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
973 * write the STREAMINFO metadata block
975 if(encoder->protected_->verify)
976 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
977 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
978 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
979 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
980 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
981 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
982 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
983 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
984 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
985 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
986 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
987 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
988 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
989 FLAC__MD5Init(&encoder->private_->md5context);
990 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
991 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
992 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
994 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
995 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
996 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
998 if(!write_bitbuffer_(encoder, 0)) {
999 /* the above function sets the state for us in case of an error */
1000 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1004 * Now that the STREAMINFO block is written, we can init this to an
1005 * absurdly-high value...
1007 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1008 /* ... and clear this to 0 */
1009 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1012 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1013 * if not, we will write an empty one (FLAC__add_metadata_block()
1014 * automatically supplies the vendor string).
1016 * WATCHOUT: libOggFLAC depends on us to write this block after the
1017 * STREAMINFO since that's what the mapping requires. (In the case
1018 * that metadata_has_vorbis_comment is true it will have already
1019 * insured that the metadata list is properly ordered.)
1021 if(!metadata_has_vorbis_comment) {
1022 FLAC__StreamMetadata vorbis_comment;
1023 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1024 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1025 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1026 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1027 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1028 vorbis_comment.data.vorbis_comment.num_comments = 0;
1029 vorbis_comment.data.vorbis_comment.comments = 0;
1030 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1031 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1032 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1034 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1035 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1036 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1038 if(!write_bitbuffer_(encoder, 0)) {
1039 /* the above function sets the state for us in case of an error */
1040 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1045 * write the user's metadata blocks
1047 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1048 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1049 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1050 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1051 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1053 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1054 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1055 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1057 if(!write_bitbuffer_(encoder, 0)) {
1058 /* the above function sets the state for us in case of an error */
1059 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1063 /* now that all the metadata is written, we save the stream offset */
1064 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 */
1065 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1066 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1069 if(encoder->protected_->verify)
1070 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1072 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1075 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(FLAC__StreamEncoder *encoder, FILE *file, FLAC__StreamEncoderProgressCallback progress_callback, void *client_data)
1077 FLAC__StreamEncoderInitStatus init_status;
1079 FLAC__ASSERT(0 != encoder);
1080 FLAC__ASSERT(0 != file);
1083 * To make sure that our file does not go unclosed after an error, we
1084 * must assign the FILE pointer before any further error can occur in
1087 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1088 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1090 /* double protection */
1092 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1093 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1097 file = get_binary_stdout_(); /* just to be safe */
1099 encoder->private_->file = file;
1101 encoder->private_->progress_callback = progress_callback;
1102 encoder->private_->bytes_written = 0;
1103 encoder->private_->samples_written = 0;
1104 encoder->private_->frames_written = 0;
1106 init_status = FLAC__stream_encoder_init_stream(encoder, file_write_callback_, file_seek_callback_, file_tell_callback_, /*metadata_callback=*/0, client_data);
1107 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1108 /* the above function sets the state for us in case of an error */
1113 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1115 FLAC__ASSERT(blocksize != 0);
1116 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1122 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(FLAC__StreamEncoder *encoder, const char *filename, FLAC__StreamEncoderProgressCallback progress_callback, void *client_data)
1126 FLAC__ASSERT(0 != encoder);
1129 * To make sure that our file does not go unclosed after an error, we
1130 * have to do the same entrance checks here that are later performed
1131 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1133 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1134 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1136 file = filename? fopen(filename, "w+b") : stdout;
1139 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1140 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1143 return FLAC__stream_encoder_init_FILE(encoder, file, progress_callback, client_data);
1146 FLAC_API void FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1148 FLAC__ASSERT(0 != encoder);
1149 FLAC__ASSERT(0 != encoder->private_);
1150 FLAC__ASSERT(0 != encoder->protected_);
1152 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1155 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1156 if(encoder->private_->current_sample_number != 0) {
1157 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1158 process_frame_(encoder, true); /* true => is last frame */
1162 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1164 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1165 if(encoder->private_->seek_callback)
1166 update_metadata_(encoder);
1167 if(encoder->private_->metadata_callback)
1168 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1171 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder)
1172 FLAC__stream_decoder_finish(encoder->private_->verify.decoder);
1174 if(0 != encoder->private_->file) {
1175 if(encoder->private_->file != stdout)
1176 fclose(encoder->private_->file);
1177 encoder->private_->file = 0;
1181 set_defaults_(encoder);
1183 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1186 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1188 FLAC__ASSERT(0 != encoder);
1189 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1191 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1192 encoder->protected_->verify = value;
1197 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1199 FLAC__ASSERT(0 != encoder);
1200 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1202 encoder->protected_->streamable_subset = value;
1206 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1208 FLAC__ASSERT(0 != encoder);
1209 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1211 encoder->protected_->do_mid_side_stereo = value;
1215 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1217 FLAC__ASSERT(0 != encoder);
1218 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1220 encoder->protected_->loose_mid_side_stereo = value;
1224 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1226 FLAC__ASSERT(0 != encoder);
1227 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1229 encoder->protected_->channels = value;
1233 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1235 FLAC__ASSERT(0 != encoder);
1236 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1238 encoder->protected_->bits_per_sample = value;
1242 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1244 FLAC__ASSERT(0 != encoder);
1245 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1247 encoder->protected_->sample_rate = value;
1251 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1253 FLAC__ASSERT(0 != encoder);
1254 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1256 encoder->protected_->blocksize = value;
1260 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1262 FLAC__ASSERT(0 != encoder);
1263 FLAC__ASSERT(0 != specification);
1264 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1266 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1267 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1269 encoder->protected_->num_apodizations = 0;
1271 const char *s = strchr(specification, ';');
1272 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1273 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1274 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1275 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1276 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1277 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1278 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1279 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1280 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1281 else if(n==6 && 0 == strncmp("connes" , specification, n))
1282 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1283 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1284 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1285 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1286 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1287 if (stddev > 0.0 && stddev <= 0.5) {
1288 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1289 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1292 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1293 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1294 else if(n==4 && 0 == strncmp("hann" , specification, n))
1295 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1296 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1297 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1298 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1299 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1300 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1301 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1302 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1303 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1304 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1305 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1306 if (p >= 0.0 && p <= 1.0) {
1307 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1308 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1311 else if(n==5 && 0 == strncmp("welch" , specification, n))
1312 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1313 if (encoder->protected_->num_apodizations == 32)
1316 specification = s+1;
1320 if(encoder->protected_->num_apodizations == 0) {
1321 encoder->protected_->num_apodizations = 1;
1322 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1323 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1325 #ifdef WINDOW_DEBUG_OUTPUT
1326 {unsigned n;for(n=0;n<encoder->protected_->num_apodizations;n++)fprintf(stderr,"@@@@@@ parsed apodization[%zu]: %s\n",n,winstr[encoder->protected_->apodizations[n].type]);}
1332 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1334 FLAC__ASSERT(0 != encoder);
1335 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1337 encoder->protected_->max_lpc_order = value;
1341 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1343 FLAC__ASSERT(0 != encoder);
1344 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1346 encoder->protected_->qlp_coeff_precision = value;
1350 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1352 FLAC__ASSERT(0 != encoder);
1353 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1355 encoder->protected_->do_qlp_coeff_prec_search = value;
1359 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1361 FLAC__ASSERT(0 != encoder);
1362 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1365 /*@@@ deprecated: */
1366 encoder->protected_->do_escape_coding = value;
1373 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1375 FLAC__ASSERT(0 != encoder);
1376 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1378 encoder->protected_->do_exhaustive_model_search = value;
1382 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1384 FLAC__ASSERT(0 != encoder);
1385 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1387 encoder->protected_->min_residual_partition_order = value;
1391 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1393 FLAC__ASSERT(0 != encoder);
1394 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1396 encoder->protected_->max_residual_partition_order = value;
1400 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1402 FLAC__ASSERT(0 != encoder);
1403 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1406 /*@@@ deprecated: */
1407 encoder->protected_->rice_parameter_search_dist = value;
1414 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1416 FLAC__ASSERT(0 != encoder);
1417 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1419 encoder->protected_->total_samples_estimate = value;
1423 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1425 FLAC__ASSERT(0 != encoder);
1426 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1428 encoder->protected_->metadata = metadata;
1429 encoder->protected_->num_metadata_blocks = num_blocks;
1430 if(0 != metadata && num_blocks > 0) {
1432 for(i = 0; i < num_blocks; i++) {
1433 if(0 != metadata[i] && metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
1434 encoder->private_->seek_table = &metadata[i]->data.seek_table;
1435 break; /* take only the first one */
1443 * These three functions are not static, but not publically exposed in
1444 * include/FLAC/ either. They are used by the test suite.
1446 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1448 FLAC__ASSERT(0 != encoder);
1449 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1451 encoder->private_->disable_constant_subframes = value;
1455 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1457 FLAC__ASSERT(0 != encoder);
1458 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1460 encoder->private_->disable_fixed_subframes = value;
1464 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1466 FLAC__ASSERT(0 != encoder);
1467 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1469 encoder->private_->disable_verbatim_subframes = value;
1473 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1475 FLAC__ASSERT(0 != encoder);
1476 return encoder->protected_->state;
1479 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1481 FLAC__ASSERT(0 != encoder);
1482 if(encoder->protected_->verify)
1483 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1485 return FLAC__STREAM_DECODER_UNINITIALIZED;
1488 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1490 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1491 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1493 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1496 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)
1498 FLAC__ASSERT(0 != encoder);
1499 if(0 != absolute_sample)
1500 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1501 if(0 != frame_number)
1502 *frame_number = encoder->private_->verify.error_stats.frame_number;
1504 *channel = encoder->private_->verify.error_stats.channel;
1506 *sample = encoder->private_->verify.error_stats.sample;
1508 *expected = encoder->private_->verify.error_stats.expected;
1510 *got = encoder->private_->verify.error_stats.got;
1513 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1515 FLAC__ASSERT(0 != encoder);
1516 return encoder->protected_->verify;
1519 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1521 FLAC__ASSERT(0 != encoder);
1522 return encoder->protected_->streamable_subset;
1525 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1527 FLAC__ASSERT(0 != encoder);
1528 return encoder->protected_->do_mid_side_stereo;
1531 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1533 FLAC__ASSERT(0 != encoder);
1534 return encoder->protected_->loose_mid_side_stereo;
1537 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1539 FLAC__ASSERT(0 != encoder);
1540 return encoder->protected_->channels;
1543 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1545 FLAC__ASSERT(0 != encoder);
1546 return encoder->protected_->bits_per_sample;
1549 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1551 FLAC__ASSERT(0 != encoder);
1552 return encoder->protected_->sample_rate;
1555 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1557 FLAC__ASSERT(0 != encoder);
1558 return encoder->protected_->blocksize;
1561 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1563 FLAC__ASSERT(0 != encoder);
1564 return encoder->protected_->max_lpc_order;
1567 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1569 FLAC__ASSERT(0 != encoder);
1570 return encoder->protected_->qlp_coeff_precision;
1573 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1575 FLAC__ASSERT(0 != encoder);
1576 return encoder->protected_->do_qlp_coeff_prec_search;
1579 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1581 FLAC__ASSERT(0 != encoder);
1582 return encoder->protected_->do_escape_coding;
1585 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1587 FLAC__ASSERT(0 != encoder);
1588 return encoder->protected_->do_exhaustive_model_search;
1591 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1593 FLAC__ASSERT(0 != encoder);
1594 return encoder->protected_->min_residual_partition_order;
1597 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1599 FLAC__ASSERT(0 != encoder);
1600 return encoder->protected_->max_residual_partition_order;
1603 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1605 FLAC__ASSERT(0 != encoder);
1606 return encoder->protected_->rice_parameter_search_dist;
1609 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1611 FLAC__ASSERT(0 != encoder);
1612 return encoder->protected_->total_samples_estimate;
1615 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1617 unsigned i, j, channel;
1618 FLAC__int32 x, mid, side;
1619 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1621 FLAC__ASSERT(0 != encoder);
1622 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1626 * we have several flavors of the same basic loop, optimized for
1627 * different conditions:
1629 if(encoder->protected_->max_lpc_order > 0) {
1630 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
1632 * stereo coding: unroll channel loop
1633 * with LPC: calculate floating point version of signal
1636 if(encoder->protected_->verify)
1637 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1639 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1640 x = mid = side = buffer[0][j];
1641 encoder->private_->integer_signal[0][i] = x;
1642 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1643 encoder->private_->real_signal[0][i] = (FLAC__real)x;
1646 encoder->private_->integer_signal[1][i] = x;
1647 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1648 encoder->private_->real_signal[1][i] = (FLAC__real)x;
1652 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
1653 encoder->private_->integer_signal_mid_side[1][i] = side;
1654 encoder->private_->integer_signal_mid_side[0][i] = mid;
1655 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1656 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
1657 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
1659 encoder->private_->current_sample_number++;
1661 if(i == blocksize) {
1662 if(!process_frame_(encoder, false)) /* false => not last frame */
1665 } while(j < samples);
1669 * independent channel coding: buffer each channel in inner loop
1670 * with LPC: calculate floating point version of signal
1673 if(encoder->protected_->verify)
1674 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1676 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1677 for(channel = 0; channel < channels; channel++) {
1678 x = buffer[channel][j];
1679 encoder->private_->integer_signal[channel][i] = x;
1680 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1681 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
1684 encoder->private_->current_sample_number++;
1686 if(i == blocksize) {
1687 if(!process_frame_(encoder, false)) /* false => not last frame */
1690 } while(j < samples);
1694 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
1696 * stereo coding: unroll channel loop
1697 * without LPC: no need to calculate floating point version of signal
1700 if(encoder->protected_->verify)
1701 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1703 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1704 encoder->private_->integer_signal[0][i] = mid = side = buffer[0][j];
1706 encoder->private_->integer_signal[1][i] = x;
1709 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
1710 encoder->private_->integer_signal_mid_side[1][i] = side;
1711 encoder->private_->integer_signal_mid_side[0][i] = mid;
1712 encoder->private_->current_sample_number++;
1714 if(i == blocksize) {
1715 if(!process_frame_(encoder, false)) /* false => not last frame */
1718 } while(j < samples);
1722 * independent channel coding: buffer each channel in inner loop
1723 * without LPC: no need to calculate floating point version of signal
1726 if(encoder->protected_->verify)
1727 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1729 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1730 for(channel = 0; channel < channels; channel++)
1731 encoder->private_->integer_signal[channel][i] = buffer[channel][j];
1732 encoder->private_->current_sample_number++;
1734 if(i == blocksize) {
1735 if(!process_frame_(encoder, false)) /* false => not last frame */
1738 } while(j < samples);
1745 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
1747 unsigned i, j, k, channel;
1748 FLAC__int32 x, mid, side;
1749 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1751 FLAC__ASSERT(0 != encoder);
1752 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1756 * we have several flavors of the same basic loop, optimized for
1757 * different conditions:
1759 if(encoder->protected_->max_lpc_order > 0) {
1760 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
1762 * stereo coding: unroll channel loop
1763 * with LPC: calculate floating point version of signal
1766 if(encoder->protected_->verify)
1767 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1769 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1770 x = mid = side = buffer[k++];
1771 encoder->private_->integer_signal[0][i] = x;
1772 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1773 encoder->private_->real_signal[0][i] = (FLAC__real)x;
1776 encoder->private_->integer_signal[1][i] = x;
1777 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1778 encoder->private_->real_signal[1][i] = (FLAC__real)x;
1782 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
1783 encoder->private_->integer_signal_mid_side[1][i] = side;
1784 encoder->private_->integer_signal_mid_side[0][i] = mid;
1785 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1786 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
1787 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
1789 encoder->private_->current_sample_number++;
1791 if(i == blocksize) {
1792 if(!process_frame_(encoder, false)) /* false => not last frame */
1795 } while(j < samples);
1799 * independent channel coding: buffer each channel in inner loop
1800 * with LPC: calculate floating point version of signal
1803 if(encoder->protected_->verify)
1804 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1806 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1807 for(channel = 0; channel < channels; channel++) {
1809 encoder->private_->integer_signal[channel][i] = x;
1810 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1811 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
1814 encoder->private_->current_sample_number++;
1816 if(i == blocksize) {
1817 if(!process_frame_(encoder, false)) /* false => not last frame */
1820 } while(j < samples);
1824 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
1826 * stereo coding: unroll channel loop
1827 * without LPC: no need to calculate floating point version of signal
1830 if(encoder->protected_->verify)
1831 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1833 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1834 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
1836 encoder->private_->integer_signal[1][i] = x;
1839 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
1840 encoder->private_->integer_signal_mid_side[1][i] = side;
1841 encoder->private_->integer_signal_mid_side[0][i] = mid;
1842 encoder->private_->current_sample_number++;
1844 if(i == blocksize) {
1845 if(!process_frame_(encoder, false)) /* false => not last frame */
1848 } while(j < samples);
1852 * independent channel coding: buffer each channel in inner loop
1853 * without LPC: no need to calculate floating point version of signal
1856 if(encoder->protected_->verify)
1857 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1859 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1860 for(channel = 0; channel < channels; channel++)
1861 encoder->private_->integer_signal[channel][i] = buffer[k++];
1862 encoder->private_->current_sample_number++;
1864 if(i == blocksize) {
1865 if(!process_frame_(encoder, false)) /* false => not last frame */
1868 } while(j < samples);
1875 /***********************************************************************
1877 * Private class methods
1879 ***********************************************************************/
1881 void set_defaults_(FLAC__StreamEncoder *encoder)
1883 FLAC__ASSERT(0 != encoder);
1885 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1886 encoder->protected_->verify = true;
1888 encoder->protected_->verify = false;
1890 encoder->protected_->streamable_subset = true;
1891 encoder->protected_->do_mid_side_stereo = false;
1892 encoder->protected_->loose_mid_side_stereo = false;
1893 encoder->protected_->channels = 2;
1894 encoder->protected_->bits_per_sample = 16;
1895 encoder->protected_->sample_rate = 44100;
1896 encoder->protected_->blocksize = 1152;
1897 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1898 encoder->protected_->num_apodizations = 1;
1899 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1900 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1902 encoder->protected_->max_lpc_order = 0;
1903 encoder->protected_->qlp_coeff_precision = 0;
1904 encoder->protected_->do_qlp_coeff_prec_search = false;
1905 encoder->protected_->do_exhaustive_model_search = false;
1906 encoder->protected_->do_escape_coding = false;
1907 encoder->protected_->min_residual_partition_order = 0;
1908 encoder->protected_->max_residual_partition_order = 0;
1909 encoder->protected_->rice_parameter_search_dist = 0;
1910 encoder->protected_->total_samples_estimate = 0;
1911 encoder->protected_->metadata = 0;
1912 encoder->protected_->num_metadata_blocks = 0;
1914 encoder->private_->seek_table = 0;
1915 encoder->private_->disable_constant_subframes = false;
1916 encoder->private_->disable_fixed_subframes = false;
1917 encoder->private_->disable_verbatim_subframes = false;
1918 encoder->private_->write_callback = 0;
1919 encoder->private_->seek_callback = 0;
1920 encoder->private_->tell_callback = 0;
1921 encoder->private_->metadata_callback = 0;
1922 encoder->private_->progress_callback = 0;
1923 encoder->private_->client_data = 0;
1926 void free_(FLAC__StreamEncoder *encoder)
1928 unsigned i, channel;
1930 FLAC__ASSERT(0 != encoder);
1931 for(i = 0; i < encoder->protected_->channels; i++) {
1932 if(0 != encoder->private_->integer_signal_unaligned[i]) {
1933 free(encoder->private_->integer_signal_unaligned[i]);
1934 encoder->private_->integer_signal_unaligned[i] = 0;
1936 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1937 if(0 != encoder->private_->real_signal_unaligned[i]) {
1938 free(encoder->private_->real_signal_unaligned[i]);
1939 encoder->private_->real_signal_unaligned[i] = 0;
1943 for(i = 0; i < 2; i++) {
1944 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
1945 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
1946 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
1948 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1949 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
1950 free(encoder->private_->real_signal_mid_side_unaligned[i]);
1951 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
1955 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1956 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
1957 if(0 != encoder->private_->window_unaligned[i]) {
1958 free(encoder->private_->window_unaligned[i]);
1959 encoder->private_->window_unaligned[i] = 0;
1962 if(0 != encoder->private_->windowed_signal_unaligned) {
1963 free(encoder->private_->windowed_signal_unaligned);
1964 encoder->private_->windowed_signal_unaligned = 0;
1967 for(channel = 0; channel < encoder->protected_->channels; channel++) {
1968 for(i = 0; i < 2; i++) {
1969 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
1970 free(encoder->private_->residual_workspace_unaligned[channel][i]);
1971 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
1975 for(channel = 0; channel < 2; channel++) {
1976 for(i = 0; i < 2; i++) {
1977 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
1978 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
1979 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
1983 if(0 != encoder->private_->abs_residual_unaligned) {
1984 free(encoder->private_->abs_residual_unaligned);
1985 encoder->private_->abs_residual_unaligned = 0;
1987 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
1988 free(encoder->private_->abs_residual_partition_sums_unaligned);
1989 encoder->private_->abs_residual_partition_sums_unaligned = 0;
1991 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
1992 free(encoder->private_->raw_bits_per_partition_unaligned);
1993 encoder->private_->raw_bits_per_partition_unaligned = 0;
1995 if(encoder->protected_->verify) {
1996 for(i = 0; i < encoder->protected_->channels; i++) {
1997 if(0 != encoder->private_->verify.input_fifo.data[i]) {
1998 free(encoder->private_->verify.input_fifo.data[i]);
1999 encoder->private_->verify.input_fifo.data[i] = 0;
2003 FLAC__bitbuffer_free(encoder->private_->frame);
2006 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_size)
2009 unsigned i, channel;
2011 FLAC__ASSERT(new_size > 0);
2012 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2013 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2015 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2016 if(new_size <= encoder->private_->input_capacity)
2021 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2022 * requires that the input arrays (in our case the integer signals)
2023 * have a buffer of up to 3 zeroes in front (at negative indices) for
2024 * alignment purposes; we use 4 to keep the data well-aligned.
2027 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2028 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size+4, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2029 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2030 if(encoder->protected_->max_lpc_order > 0)
2031 ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2033 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2034 encoder->private_->integer_signal[i] += 4;
2036 for(i = 0; ok && i < 2; i++) {
2037 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size+4, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]);
2038 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2039 if(encoder->protected_->max_lpc_order > 0)
2040 ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]);
2042 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2043 encoder->private_->integer_signal_mid_side[i] += 4;
2045 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2046 if(ok && encoder->protected_->max_lpc_order > 0) {
2047 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2048 ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2049 ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2052 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2053 for(i = 0; ok && i < 2; i++) {
2054 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2057 for(channel = 0; ok && channel < 2; channel++) {
2058 for(i = 0; ok && i < 2; i++) {
2059 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]);
2062 ok = ok && FLAC__memory_alloc_aligned_uint32_array(new_size, &encoder->private_->abs_residual_unaligned, &encoder->private_->abs_residual);
2063 if(encoder->private_->precompute_partition_sums || encoder->protected_->do_escape_coding) /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */
2064 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_size * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2065 if(encoder->protected_->do_escape_coding)
2066 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_size * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2069 encoder->private_->input_capacity = new_size;
2071 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2073 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2074 if(ok && encoder->protected_->max_lpc_order > 0) {
2075 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2076 switch(encoder->protected_->apodizations[i].type) {
2077 case FLAC__APODIZATION_BARTLETT:
2078 FLAC__window_bartlett(encoder->private_->window[i], new_size);
2080 case FLAC__APODIZATION_BARTLETT_HANN:
2081 FLAC__window_bartlett_hann(encoder->private_->window[i], new_size);
2083 case FLAC__APODIZATION_BLACKMAN:
2084 FLAC__window_blackman(encoder->private_->window[i], new_size);
2086 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2087 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_size);
2089 case FLAC__APODIZATION_CONNES:
2090 FLAC__window_connes(encoder->private_->window[i], new_size);
2092 case FLAC__APODIZATION_FLATTOP:
2093 FLAC__window_flattop(encoder->private_->window[i], new_size);
2095 case FLAC__APODIZATION_GAUSS:
2096 FLAC__window_gauss(encoder->private_->window[i], new_size, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2098 case FLAC__APODIZATION_HAMMING:
2099 FLAC__window_hamming(encoder->private_->window[i], new_size);
2101 case FLAC__APODIZATION_HANN:
2102 FLAC__window_hann(encoder->private_->window[i], new_size);
2104 case FLAC__APODIZATION_KAISER_BESSEL:
2105 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_size);
2107 case FLAC__APODIZATION_NUTTALL:
2108 FLAC__window_nuttall(encoder->private_->window[i], new_size);
2110 case FLAC__APODIZATION_RECTANGLE:
2111 FLAC__window_rectangle(encoder->private_->window[i], new_size);
2113 case FLAC__APODIZATION_TRIANGLE:
2114 FLAC__window_triangle(encoder->private_->window[i], new_size);
2116 case FLAC__APODIZATION_TUKEY:
2117 FLAC__window_tukey(encoder->private_->window[i], new_size, encoder->protected_->apodizations[i].parameters.tukey.p);
2119 case FLAC__APODIZATION_WELCH:
2120 FLAC__window_welch(encoder->private_->window[i], new_size);
2124 /* double protection */
2125 FLAC__window_hann(encoder->private_->window[i], new_size);
2135 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples)
2137 const FLAC__byte *buffer;
2140 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
2142 FLAC__bitbuffer_get_buffer(encoder->private_->frame, &buffer, &bytes);
2144 if(encoder->protected_->verify) {
2145 encoder->private_->verify.output.data = buffer;
2146 encoder->private_->verify.output.bytes = bytes;
2147 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2148 encoder->private_->verify.needs_magic_hack = true;
2151 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2152 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2153 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2154 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2160 if(write_frame_(encoder, buffer, bytes, samples) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2161 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2162 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2166 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
2169 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2170 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2176 FLAC__StreamEncoderWriteStatus write_frame_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples)
2178 FLAC__StreamEncoderWriteStatus status;
2179 FLAC__uint64 output_position = 0;
2181 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2182 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2183 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2184 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2188 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2191 FLAC__MetadataType type = (buffer[0] & 0x7f);
2192 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2193 encoder->protected_->streaminfo_offset = output_position;
2194 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2195 encoder->protected_->seektable_offset = output_position;
2199 * Mark the current seek point if hit (if audio_offset == 0 that
2200 * means we're still writing metadata and haven't hit the first
2203 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2204 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2205 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2206 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2207 FLAC__uint64 test_sample;
2209 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2210 test_sample = encoder->private_->seek_table->points[i].sample_number;
2211 if(test_sample > frame_last_sample) {
2214 else if(test_sample >= frame_first_sample) {
2215 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2216 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2217 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2218 encoder->private_->first_seekpoint_to_check++;
2219 /* DO NOT: "break;" and here's why:
2220 * The seektable template may contain more than one target
2221 * sample for any given frame; we will keep looping, generating
2222 * duplicate seekpoints for them, and we'll clean it up later,
2223 * just before writing the seektable back to the metadata.
2227 encoder->private_->first_seekpoint_to_check++;
2232 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2234 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2235 encoder->private_->bytes_written += bytes;
2236 encoder->private_->samples_written += samples;
2237 /* we keep a high watermark on the number of frames written because
2238 * when the encoder goes back to write metadata, 'current_frame'
2239 * will drop back to 0.
2241 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2244 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2249 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2250 void update_metadata_(const FLAC__StreamEncoder *encoder)
2252 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2253 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2254 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2255 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2256 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2257 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2258 FLAC__StreamEncoderSeekStatus seek_status;
2260 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2262 /* All this is based on intimate knowledge of the stream header
2263 * layout, but a change to the header format that would break this
2264 * would also break all streams encoded in the previous format.
2268 * Write MD5 signature
2271 const unsigned md5_offset =
2272 FLAC__STREAM_METADATA_HEADER_LENGTH +
2274 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2275 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2276 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2277 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2278 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2279 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2280 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2281 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2284 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2285 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2286 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2289 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2290 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2296 * Write total samples
2299 const unsigned total_samples_byte_offset =
2300 FLAC__STREAM_METADATA_HEADER_LENGTH +
2302 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2303 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2304 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2305 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2306 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2307 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2308 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2312 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2313 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2314 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2315 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2316 b[4] = (FLAC__byte)(samples & 0xFF);
2317 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) {
2318 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2319 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2322 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2323 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2329 * Write min/max framesize
2332 const unsigned min_framesize_offset =
2333 FLAC__STREAM_METADATA_HEADER_LENGTH +
2335 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2336 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2339 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2340 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2341 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2342 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2343 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2344 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2345 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) {
2346 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2347 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2350 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2351 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2359 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2362 FLAC__format_seektable_sort(encoder->private_->seek_table);
2364 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2366 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) {
2367 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2368 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2372 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2375 xx = encoder->private_->seek_table->points[i].sample_number;
2376 b[7] = (FLAC__byte)xx; xx >>= 8;
2377 b[6] = (FLAC__byte)xx; xx >>= 8;
2378 b[5] = (FLAC__byte)xx; xx >>= 8;
2379 b[4] = (FLAC__byte)xx; xx >>= 8;
2380 b[3] = (FLAC__byte)xx; xx >>= 8;
2381 b[2] = (FLAC__byte)xx; xx >>= 8;
2382 b[1] = (FLAC__byte)xx; xx >>= 8;
2383 b[0] = (FLAC__byte)xx; xx >>= 8;
2384 xx = encoder->private_->seek_table->points[i].stream_offset;
2385 b[15] = (FLAC__byte)xx; xx >>= 8;
2386 b[14] = (FLAC__byte)xx; xx >>= 8;
2387 b[13] = (FLAC__byte)xx; xx >>= 8;
2388 b[12] = (FLAC__byte)xx; xx >>= 8;
2389 b[11] = (FLAC__byte)xx; xx >>= 8;
2390 b[10] = (FLAC__byte)xx; xx >>= 8;
2391 b[9] = (FLAC__byte)xx; xx >>= 8;
2392 b[8] = (FLAC__byte)xx; xx >>= 8;
2393 x = encoder->private_->seek_table->points[i].frame_samples;
2394 b[17] = (FLAC__byte)x; x >>= 8;
2395 b[16] = (FLAC__byte)x; x >>= 8;
2396 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2397 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2404 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame)
2406 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2409 * Accumulate raw signal to the MD5 signature
2411 if(!FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) {
2412 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2417 * Process the frame header and subframes into the frame bitbuffer
2419 if(!process_subframes_(encoder, is_last_frame)) {
2420 /* the above function sets the state for us in case of an error */
2425 * Zero-pad the frame to a byte_boundary
2427 if(!FLAC__bitbuffer_zero_pad_to_byte_boundary(encoder->private_->frame)) {
2428 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2433 * CRC-16 the whole thing
2435 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
2436 FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__bitbuffer_get_write_crc16(encoder->private_->frame), FLAC__FRAME_FOOTER_CRC_LEN);
2441 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize)) {
2442 /* the above function sets the state for us in case of an error */
2447 * Get ready for the next frame
2449 encoder->private_->current_sample_number = 0;
2450 encoder->private_->current_frame_number++;
2451 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
2456 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame)
2458 FLAC__FrameHeader frame_header;
2459 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
2460 FLAC__bool do_independent, do_mid_side, precompute_partition_sums;
2463 * Calculate the min,max Rice partition orders
2466 max_partition_order = 0;
2469 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
2470 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
2472 min_partition_order = min(min_partition_order, max_partition_order);
2474 precompute_partition_sums = encoder->private_->precompute_partition_sums && ((max_partition_order > min_partition_order) || encoder->protected_->do_escape_coding);
2479 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
2480 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2483 frame_header.blocksize = encoder->protected_->blocksize;
2484 frame_header.sample_rate = encoder->protected_->sample_rate;
2485 frame_header.channels = encoder->protected_->channels;
2486 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
2487 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
2488 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
2489 frame_header.number.frame_number = encoder->private_->current_frame_number;
2492 * Figure out what channel assignments to try
2494 if(encoder->protected_->do_mid_side_stereo) {
2495 if(encoder->protected_->loose_mid_side_stereo) {
2496 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
2497 do_independent = true;
2501 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
2502 do_mid_side = !do_independent;
2506 do_independent = true;
2511 do_independent = true;
2512 do_mid_side = false;
2515 FLAC__ASSERT(do_independent || do_mid_side);
2518 * Check for wasted bits; set effective bps for each subframe
2520 if(do_independent) {
2521 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2522 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
2523 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
2524 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
2528 FLAC__ASSERT(encoder->protected_->channels == 2);
2529 for(channel = 0; channel < 2; channel++) {
2530 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
2531 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
2532 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
2537 * First do a normal encoding pass of each independent channel
2539 if(do_independent) {
2540 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2544 min_partition_order,
2545 max_partition_order,
2546 precompute_partition_sums,
2548 encoder->private_->subframe_bps[channel],
2549 encoder->private_->integer_signal[channel],
2550 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2551 encoder->private_->real_signal[channel],
2553 encoder->private_->subframe_workspace_ptr[channel],
2554 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
2555 encoder->private_->residual_workspace[channel],
2556 encoder->private_->best_subframe+channel,
2557 encoder->private_->best_subframe_bits+channel
2558 #ifdef WINDOW_DEBUG_OUTPUT
2568 * Now do mid and side channels if requested
2571 FLAC__ASSERT(encoder->protected_->channels == 2);
2573 for(channel = 0; channel < 2; channel++) {
2577 min_partition_order,
2578 max_partition_order,
2579 precompute_partition_sums,
2581 encoder->private_->subframe_bps_mid_side[channel],
2582 encoder->private_->integer_signal_mid_side[channel],
2583 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2584 encoder->private_->real_signal_mid_side[channel],
2586 encoder->private_->subframe_workspace_ptr_mid_side[channel],
2587 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
2588 encoder->private_->residual_workspace_mid_side[channel],
2589 encoder->private_->best_subframe_mid_side+channel,
2590 encoder->private_->best_subframe_bits_mid_side+channel
2591 #ifdef WINDOW_DEBUG_OUTPUT
2601 * Compose the frame bitbuffer
2604 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
2605 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
2606 FLAC__ChannelAssignment channel_assignment;
2607 #ifdef WINDOW_DEBUG_OUTPUT
2608 unsigned left_bits = 0, right_bits = 0;
2611 FLAC__ASSERT(encoder->protected_->channels == 2);
2613 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
2614 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
2617 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
2619 FLAC__ChannelAssignment ca;
2621 FLAC__ASSERT(do_independent && do_mid_side);
2623 /* We have to figure out which channel assignent results in the smallest frame */
2624 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
2625 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
2626 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
2627 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
2629 for(channel_assignment = (FLAC__ChannelAssignment)0, min_bits = bits[0], ca = (FLAC__ChannelAssignment)1; (int)ca <= 3; ca = (FLAC__ChannelAssignment)((int)ca + 1)) {
2630 if(bits[ca] < min_bits) {
2631 min_bits = bits[ca];
2632 channel_assignment = ca;
2637 frame_header.channel_assignment = channel_assignment;
2639 if(!FLAC__frame_add_header(&frame_header, encoder->protected_->streamable_subset, encoder->private_->frame)) {
2640 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
2644 switch(channel_assignment) {
2645 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
2646 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
2647 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
2648 #ifdef WINDOW_DEBUG_OUTPUT
2649 left_bits = encoder->private_->best_subframe_bits [0];
2650 right_bits = encoder->private_->best_subframe_bits [1];
2653 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
2654 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
2655 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
2656 #ifdef WINDOW_DEBUG_OUTPUT
2657 left_bits = encoder->private_->best_subframe_bits [0];
2658 right_bits = encoder->private_->best_subframe_bits_mid_side [1];
2661 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
2662 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
2663 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
2664 #ifdef WINDOW_DEBUG_OUTPUT
2665 left_bits = encoder->private_->best_subframe_bits_mid_side [1];
2666 right_bits = encoder->private_->best_subframe_bits [1];
2669 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
2670 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
2671 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
2672 #ifdef WINDOW_DEBUG_OUTPUT
2673 left_bits = encoder->private_->best_subframe_bits_mid_side [0];
2674 right_bits = encoder->private_->best_subframe_bits_mid_side [1];
2681 switch(channel_assignment) {
2682 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
2683 left_bps = encoder->private_->subframe_bps [0];
2684 right_bps = encoder->private_->subframe_bps [1];
2686 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
2687 left_bps = encoder->private_->subframe_bps [0];
2688 right_bps = encoder->private_->subframe_bps_mid_side[1];
2690 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
2691 left_bps = encoder->private_->subframe_bps_mid_side[1];
2692 right_bps = encoder->private_->subframe_bps [1];
2694 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
2695 left_bps = encoder->private_->subframe_bps_mid_side[0];
2696 right_bps = encoder->private_->subframe_bps_mid_side[1];
2702 /* note that encoder_add_subframe_ sets the state for us in case of an error */
2703 #ifdef WINDOW_DEBUG_OUTPUT
2704 if(!add_subframe_(encoder, &frame_header, left_bps , left_subframe , encoder->private_->frame, left_bits))
2706 if(!add_subframe_(encoder, &frame_header, right_bps, right_subframe, encoder->private_->frame, right_bits))
2709 if(!add_subframe_(encoder, &frame_header, left_bps , left_subframe , encoder->private_->frame))
2711 if(!add_subframe_(encoder, &frame_header, right_bps, right_subframe, encoder->private_->frame))
2716 if(!FLAC__frame_add_header(&frame_header, encoder->protected_->streamable_subset, encoder->private_->frame)) {
2717 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
2721 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2722 #ifdef WINDOW_DEBUG_OUTPUT
2723 if(!add_subframe_(encoder, &frame_header, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame, encoder->private_->best_subframe_bits[channel]))
2725 if(!add_subframe_(encoder, &frame_header, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame))
2728 /* the above function sets the state for us in case of an error */
2734 if(encoder->protected_->loose_mid_side_stereo) {
2735 encoder->private_->loose_mid_side_stereo_frame_count++;
2736 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
2737 encoder->private_->loose_mid_side_stereo_frame_count = 0;
2740 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
2745 FLAC__bool process_subframe_(
2746 FLAC__StreamEncoder *encoder,
2747 unsigned min_partition_order,
2748 unsigned max_partition_order,
2749 FLAC__bool precompute_partition_sums,
2750 const FLAC__FrameHeader *frame_header,
2751 unsigned subframe_bps,
2752 const FLAC__int32 integer_signal[],
2753 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2754 const FLAC__real real_signal[],
2756 FLAC__Subframe *subframe[2],
2757 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
2758 FLAC__int32 *residual[2],
2759 unsigned *best_subframe,
2761 #ifdef WINDOW_DEBUG_OUTPUT
2762 ,unsigned subframe_number
2766 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2767 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
2769 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
2771 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2772 FLAC__double lpc_residual_bits_per_sample;
2773 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 */
2774 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
2775 unsigned min_lpc_order, max_lpc_order, lpc_order;
2776 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
2778 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
2779 unsigned rice_parameter;
2780 unsigned _candidate_bits, _best_bits;
2781 unsigned _best_subframe;
2783 /* verbatim subframe is the baseline against which we measure other compressed subframes */
2785 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
2786 _best_bits = UINT_MAX;
2788 _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
2790 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
2791 unsigned signal_is_constant = false;
2792 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);
2793 /* check for constant subframe */
2795 !encoder->private_->disable_constant_subframes &&
2796 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2797 fixed_residual_bits_per_sample[1] == 0.0
2799 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
2802 /* the above means it's possible all samples are the same value; now double-check it: */
2804 signal_is_constant = true;
2805 for(i = 1; i < frame_header->blocksize; i++) {
2806 if(integer_signal[0] != integer_signal[i]) {
2807 signal_is_constant = false;
2812 if(signal_is_constant) {
2813 _candidate_bits = evaluate_constant_subframe_(integer_signal[0], subframe_bps, subframe[!_best_subframe]);
2814 if(_candidate_bits < _best_bits) {
2815 _best_subframe = !_best_subframe;
2816 _best_bits = _candidate_bits;
2820 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
2822 if(encoder->protected_->do_exhaustive_model_search) {
2823 min_fixed_order = 0;
2824 max_fixed_order = FLAC__MAX_FIXED_ORDER;
2827 min_fixed_order = max_fixed_order = guess_fixed_order;
2829 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
2830 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2831 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
2832 continue; /* don't even try */
2833 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 */
2835 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
2836 continue; /* don't even try */
2837 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 */
2839 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
2840 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
2841 #ifdef DEBUG_VERBOSE
2842 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
2844 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
2847 evaluate_fixed_subframe_(
2850 residual[!_best_subframe],
2851 encoder->private_->abs_residual,
2852 encoder->private_->abs_residual_partition_sums,
2853 encoder->private_->raw_bits_per_partition,
2854 frame_header->blocksize,
2858 min_partition_order,
2859 max_partition_order,
2860 precompute_partition_sums,
2861 encoder->protected_->do_escape_coding,
2862 encoder->protected_->rice_parameter_search_dist,
2863 subframe[!_best_subframe],
2864 partitioned_rice_contents[!_best_subframe]
2866 if(_candidate_bits < _best_bits) {
2867 _best_subframe = !_best_subframe;
2868 _best_bits = _candidate_bits;
2873 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2875 if(encoder->protected_->max_lpc_order > 0) {
2876 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
2877 max_lpc_order = frame_header->blocksize-1;
2879 max_lpc_order = encoder->protected_->max_lpc_order;
2880 if(max_lpc_order > 0) {
2882 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
2883 FLAC__lpc_window_data(real_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
2884 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
2885 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
2886 if(autoc[0] != 0.0) {
2887 FLAC__lpc_compute_lp_coefficients(autoc, max_lpc_order, encoder->private_->lp_coeff, lpc_error);
2888 if(encoder->protected_->do_exhaustive_model_search) {
2892 const unsigned guess_lpc_order =
2893 FLAC__lpc_compute_best_order(
2896 frame_header->blocksize,
2898 encoder->protected_->do_qlp_coeff_prec_search?
2899 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
2900 encoder->protected_->qlp_coeff_precision
2903 min_lpc_order = max_lpc_order = guess_lpc_order;
2905 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
2906 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
2907 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
2908 continue; /* don't even try */
2909 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
2910 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
2911 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
2912 #ifdef DEBUG_VERBOSE
2913 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
2915 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
2917 if(encoder->protected_->do_qlp_coeff_prec_search) {
2918 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
2919 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
2920 if(subframe_bps <= 17) {
2921 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
2922 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
2925 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
2928 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
2930 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
2932 evaluate_lpc_subframe_(
2935 residual[!_best_subframe],
2936 encoder->private_->abs_residual,
2937 encoder->private_->abs_residual_partition_sums,
2938 encoder->private_->raw_bits_per_partition,
2939 encoder->private_->lp_coeff[lpc_order-1],
2940 frame_header->blocksize,
2943 qlp_coeff_precision,
2945 min_partition_order,
2946 max_partition_order,
2947 precompute_partition_sums,
2948 encoder->protected_->do_escape_coding,
2949 encoder->protected_->rice_parameter_search_dist,
2950 subframe[!_best_subframe],
2951 partitioned_rice_contents[!_best_subframe]
2952 #ifdef WINDOW_DEBUG_OUTPUT
2953 ,frame_header->number.frame_number
2955 ,encoder->protected_->apodizations[a]
2958 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
2959 if(_candidate_bits < _best_bits) {
2960 _best_subframe = !_best_subframe;
2961 _best_bits = _candidate_bits;
2970 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
2974 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
2975 if(_best_bits == UINT_MAX) {
2976 FLAC__ASSERT(_best_subframe == 0);
2977 _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
2980 *best_subframe = _best_subframe;
2981 *best_bits = _best_bits;
2986 FLAC__bool add_subframe_(
2987 FLAC__StreamEncoder *encoder,
2988 const FLAC__FrameHeader *frame_header,
2989 unsigned subframe_bps,
2990 const FLAC__Subframe *subframe,
2991 FLAC__BitBuffer *frame
2992 #ifdef WINDOW_DEBUG_OUTPUT
2993 ,unsigned subframe_bits
2997 switch(subframe->type) {
2998 case FLAC__SUBFRAME_TYPE_CONSTANT:
2999 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3000 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3004 case FLAC__SUBFRAME_TYPE_FIXED:
3005 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), frame_header->blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3006 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3010 case FLAC__SUBFRAME_TYPE_LPC:
3011 #ifdef WINDOW_DEBUG_OUTPUT
3012 fprintf(stderr, "WIN:\tframe=%u\tsubframe=?\torder=%u\twindow=%s\tbits=%u\n", frame_header->number.frame_number, subframe->data.lpc.order, subframe->data.lpc.window_type, subframe_bits);
3014 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), frame_header->blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3015 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3019 case FLAC__SUBFRAME_TYPE_VERBATIM:
3020 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), frame_header->blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3021 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3032 unsigned evaluate_constant_subframe_(
3033 const FLAC__int32 signal,
3034 unsigned subframe_bps,
3035 FLAC__Subframe *subframe
3038 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3039 subframe->data.constant.value = signal;
3041 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe_bps;
3044 unsigned evaluate_fixed_subframe_(
3045 FLAC__StreamEncoder *encoder,
3046 const FLAC__int32 signal[],
3047 FLAC__int32 residual[],
3048 FLAC__uint32 abs_residual[],
3049 FLAC__uint64 abs_residual_partition_sums[],
3050 unsigned raw_bits_per_partition[],
3052 unsigned subframe_bps,
3054 unsigned rice_parameter,
3055 unsigned min_partition_order,
3056 unsigned max_partition_order,
3057 FLAC__bool precompute_partition_sums,
3058 FLAC__bool do_escape_coding,
3059 unsigned rice_parameter_search_dist,
3060 FLAC__Subframe *subframe,
3061 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3064 unsigned i, residual_bits;
3065 const unsigned residual_samples = blocksize - order;
3067 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3069 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3071 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3072 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3073 subframe->data.fixed.residual = residual;
3076 find_best_partition_order_(
3080 abs_residual_partition_sums,
3081 raw_bits_per_partition,
3085 min_partition_order,
3086 max_partition_order,
3087 precompute_partition_sums,
3089 rice_parameter_search_dist,
3090 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3093 subframe->data.fixed.order = order;
3094 for(i = 0; i < order; i++)
3095 subframe->data.fixed.warmup[i] = signal[i];
3097 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (order * subframe_bps) + residual_bits;
3100 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3101 unsigned evaluate_lpc_subframe_(
3102 FLAC__StreamEncoder *encoder,
3103 const FLAC__int32 signal[],
3104 FLAC__int32 residual[],
3105 FLAC__uint32 abs_residual[],
3106 FLAC__uint64 abs_residual_partition_sums[],
3107 unsigned raw_bits_per_partition[],
3108 const FLAC__real lp_coeff[],
3110 unsigned subframe_bps,
3112 unsigned qlp_coeff_precision,
3113 unsigned rice_parameter,
3114 unsigned min_partition_order,
3115 unsigned max_partition_order,
3116 FLAC__bool precompute_partition_sums,
3117 FLAC__bool do_escape_coding,
3118 unsigned rice_parameter_search_dist,
3119 FLAC__Subframe *subframe,
3120 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3121 #ifdef WINDOW_DEBUG_OUTPUT
3122 ,unsigned frame_number
3123 ,unsigned subframe_number
3124 ,FLAC__ApodizationSpecification aspec
3128 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3129 unsigned i, residual_bits;
3130 int quantization, ret;
3131 const unsigned residual_samples = blocksize - order;
3133 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3134 if(subframe_bps <= 16) {
3135 FLAC__ASSERT(order > 0);
3136 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3137 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3140 #ifdef WINDOW_DEBUG_OUTPUT
3141 if (aspec.type == FLAC__APODIZATION_GAUSS)
3142 snprintf(subframe->data.lpc.window_type, sizeof subframe->data.lpc.window_type, "%s(%0.5f)", winstr[aspec.type], aspec.parameters.gauss.stddev);
3143 else if (aspec.type == FLAC__APODIZATION_TUKEY)
3144 snprintf(subframe->data.lpc.window_type, sizeof subframe->data.lpc.window_type, "%s(%0.5f)", winstr[aspec.type], aspec.parameters.tukey.p);
3146 strncpy(subframe->data.lpc.window_type, winstr[aspec.type], sizeof subframe->data.lpc.window_type);
3149 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3151 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3153 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3154 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3155 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3157 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3159 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3161 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3163 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3164 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3165 subframe->data.lpc.residual = residual;
3168 find_best_partition_order_(
3172 abs_residual_partition_sums,
3173 raw_bits_per_partition,
3177 min_partition_order,
3178 max_partition_order,
3179 precompute_partition_sums,
3181 rice_parameter_search_dist,
3182 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3185 subframe->data.lpc.order = order;
3186 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3187 subframe->data.lpc.quantization_level = quantization;
3188 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3189 for(i = 0; i < order; i++)
3190 subframe->data.lpc.warmup[i] = signal[i];
3192 #ifdef WINDOW_DEBUG_OUTPUT
3193 fprintf(stderr, "SWIN:\tframe=%u\tsubframe=%u\torder=%u\twindow=%s\tbits=%u\n", frame_number, subframe_number, order, subframe->data.lpc.window_type, FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits);
3195 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits;
3199 unsigned evaluate_verbatim_subframe_(
3200 const FLAC__int32 signal[],
3202 unsigned subframe_bps,
3203 FLAC__Subframe *subframe
3206 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3208 subframe->data.verbatim.data = signal;
3210 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (blocksize * subframe_bps);
3213 unsigned find_best_partition_order_(
3214 FLAC__StreamEncoderPrivate *private_,
3215 const FLAC__int32 residual[],
3216 FLAC__uint32 abs_residual[],
3217 FLAC__uint64 abs_residual_partition_sums[],
3218 unsigned raw_bits_per_partition[],
3219 unsigned residual_samples,
3220 unsigned predictor_order,
3221 unsigned rice_parameter,
3222 unsigned min_partition_order,
3223 unsigned max_partition_order,
3224 FLAC__bool precompute_partition_sums,
3225 FLAC__bool do_escape_coding,
3226 unsigned rice_parameter_search_dist,
3227 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
3231 unsigned residual_bits, best_residual_bits = 0;
3232 unsigned residual_sample;
3233 unsigned best_parameters_index = 0;
3234 const unsigned blocksize = residual_samples + predictor_order;
3236 /* compute abs(residual) for use later */
3237 for(residual_sample = 0; residual_sample < residual_samples; residual_sample++) {
3238 r = residual[residual_sample];
3239 abs_residual[residual_sample] = (FLAC__uint32)(r<0? -r : r);
3242 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3243 min_partition_order = min(min_partition_order, max_partition_order);
3245 if(precompute_partition_sums) {
3246 int partition_order;
3249 precompute_partition_info_sums_(abs_residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order);
3251 if(do_escape_coding)
3252 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3254 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3255 #ifdef DONT_ESTIMATE_RICE_BITS
3257 set_partitioned_rice_with_precompute_(
3259 abs_residual_partition_sums+sum,
3260 raw_bits_per_partition+sum,
3264 rice_parameter_search_dist,
3265 (unsigned)partition_order,
3267 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3273 set_partitioned_rice_with_precompute_(
3275 abs_residual_partition_sums+sum,
3276 raw_bits_per_partition+sum,
3280 rice_parameter_search_dist,
3281 (unsigned)partition_order,
3283 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3289 FLAC__ASSERT(best_residual_bits != 0);
3292 sum += 1u << partition_order;
3293 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3294 best_residual_bits = residual_bits;
3295 best_parameters_index = !best_parameters_index;
3296 best_partitioned_rice->order = partition_order;
3301 unsigned partition_order;
3302 for(partition_order = min_partition_order; partition_order <= max_partition_order; partition_order++) {
3303 #ifdef DONT_ESTIMATE_RICE_BITS
3305 set_partitioned_rice_(
3311 rice_parameter_search_dist,
3313 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3319 set_partitioned_rice_(
3324 rice_parameter_search_dist,
3326 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3332 FLAC__ASSERT(best_residual_bits != 0);
3335 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3336 best_residual_bits = residual_bits;
3337 best_parameters_index = !best_parameters_index;
3338 best_partitioned_rice->order = partition_order;
3344 * We are allowed to de-const the pointer based on our special knowledge;
3345 * it is const to the outside world.
3348 FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents;
3349 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order));
3350 memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3351 memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3354 return best_residual_bits;
3357 void precompute_partition_info_sums_(
3358 const FLAC__uint32 abs_residual[],
3359 FLAC__uint64 abs_residual_partition_sums[],
3360 unsigned residual_samples,
3361 unsigned predictor_order,
3362 unsigned min_partition_order,
3363 unsigned max_partition_order
3366 int partition_order;
3367 unsigned from_partition, to_partition = 0;
3368 const unsigned blocksize = residual_samples + predictor_order;
3370 /* first do max_partition_order */
3371 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3372 FLAC__uint64 abs_residual_partition_sum;
3374 unsigned partition, partition_sample, partition_samples, residual_sample;
3375 const unsigned partitions = 1u << partition_order;
3376 const unsigned default_partition_samples = blocksize >> partition_order;
3378 FLAC__ASSERT(default_partition_samples > predictor_order);
3380 for(partition = residual_sample = 0; partition < partitions; partition++) {
3381 partition_samples = default_partition_samples;
3383 partition_samples -= predictor_order;
3384 abs_residual_partition_sum = 0;
3385 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3386 abs_r = abs_residual[residual_sample];
3387 abs_residual_partition_sum += abs_r;
3390 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3392 to_partition = partitions;
3396 /* now merge partitions for lower orders */
3397 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3400 const unsigned partitions = 1u << partition_order;
3401 for(i = 0; i < partitions; i++) {
3402 s = abs_residual_partition_sums[from_partition];
3404 abs_residual_partition_sums[to_partition] = s + abs_residual_partition_sums[from_partition];
3411 void precompute_partition_info_escapes_(
3412 const FLAC__int32 residual[],
3413 unsigned raw_bits_per_partition[],
3414 unsigned residual_samples,
3415 unsigned predictor_order,
3416 unsigned min_partition_order,
3417 unsigned max_partition_order
3420 int partition_order;
3421 unsigned from_partition, to_partition = 0;
3422 const unsigned blocksize = residual_samples + predictor_order;
3424 /* first do max_partition_order */
3425 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3426 FLAC__int32 r, residual_partition_min, residual_partition_max;
3427 unsigned silog2_min, silog2_max;
3428 unsigned partition, partition_sample, partition_samples, residual_sample;
3429 const unsigned partitions = 1u << partition_order;
3430 const unsigned default_partition_samples = blocksize >> partition_order;
3432 FLAC__ASSERT(default_partition_samples > predictor_order);
3434 for(partition = residual_sample = 0; partition < partitions; partition++) {
3435 partition_samples = default_partition_samples;
3437 partition_samples -= predictor_order;
3438 residual_partition_min = residual_partition_max = 0;
3439 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3440 r = residual[residual_sample];
3441 if(r < residual_partition_min)
3442 residual_partition_min = r;
3443 else if(r > residual_partition_max)
3444 residual_partition_max = r;
3447 silog2_min = FLAC__bitmath_silog2(residual_partition_min);
3448 silog2_max = FLAC__bitmath_silog2(residual_partition_max);
3449 raw_bits_per_partition[partition] = max(silog2_min, silog2_max);
3451 to_partition = partitions;
3452 break; /*@@@@@@ yuck, should remove the 'for' loop instead */
3455 /* now merge partitions for lower orders */
3456 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3459 const unsigned partitions = 1u << partition_order;
3460 for(i = 0; i < partitions; i++) {
3461 m = raw_bits_per_partition[from_partition];
3463 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
3470 #ifdef VARIABLE_RICE_BITS
3471 #undef VARIABLE_RICE_BITS
3473 #ifndef DONT_ESTIMATE_RICE_BITS
3474 #define VARIABLE_RICE_BITS(value, parameter) ((value) >> (parameter))
3477 #ifdef DONT_ESTIMATE_RICE_BITS
3478 FLAC__bool set_partitioned_rice_(
3479 const FLAC__uint32 abs_residual[],
3480 const FLAC__int32 residual[],
3481 const unsigned residual_samples,
3482 const unsigned predictor_order,
3483 const unsigned suggested_rice_parameter,
3484 const unsigned rice_parameter_search_dist,
3485 const unsigned partition_order,
3486 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3490 FLAC__bool set_partitioned_rice_(
3491 const FLAC__uint32 abs_residual[],
3492 const unsigned residual_samples,
3493 const unsigned predictor_order,
3494 const unsigned suggested_rice_parameter,
3495 const unsigned rice_parameter_search_dist,
3496 const unsigned partition_order,
3497 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3502 unsigned rice_parameter, partition_bits;
3503 #ifndef NO_RICE_SEARCH
3504 unsigned best_partition_bits;
3505 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
3507 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3508 unsigned *parameters;
3510 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
3512 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
3513 parameters = partitioned_rice_contents->parameters;
3515 if(partition_order == 0) {
3518 #ifndef NO_RICE_SEARCH
3519 if(rice_parameter_search_dist) {
3520 if(suggested_rice_parameter < rice_parameter_search_dist)
3521 min_rice_parameter = 0;
3523 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
3524 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
3525 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3526 #ifdef DEBUG_VERBOSE
3527 fprintf(stderr, "clipping rice_parameter (%u -> %u) @2\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3529 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3533 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
3535 best_partition_bits = 0xffffffff;
3536 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3538 #ifdef VARIABLE_RICE_BITS
3539 const unsigned rice_parameter_estimate = rice_parameter-1;
3540 partition_bits = (1+rice_parameter) * residual_samples;
3544 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
3545 for(i = 0; i < residual_samples; i++) {
3546 #ifdef VARIABLE_RICE_BITS
3547 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
3549 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
3552 #ifndef NO_RICE_SEARCH
3553 if(partition_bits < best_partition_bits) {
3554 best_rice_parameter = rice_parameter;
3555 best_partition_bits = partition_bits;
3559 parameters[0] = best_rice_parameter;
3560 bits_ += best_partition_bits;
3563 unsigned partition, residual_sample, save_residual_sample, partition_sample;
3564 unsigned partition_samples;
3565 FLAC__uint64 mean, k;
3566 const unsigned partitions = 1u << partition_order;
3567 for(partition = residual_sample = 0; partition < partitions; partition++) {
3568 partition_samples = (residual_samples+predictor_order) >> partition_order;
3569 if(partition == 0) {
3570 if(partition_samples <= predictor_order)
3573 partition_samples -= predictor_order;
3576 save_residual_sample = residual_sample;
3577 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++)
3578 mean += abs_residual[residual_sample];
3579 residual_sample = save_residual_sample;
3580 /* we are basically calculating the size in bits of the
3581 * average residual magnitude in the partition:
3582 * rice_parameter = floor(log2(mean/partition_samples))
3583 * 'mean' is not a good name for the variable, it is
3584 * actually the sum of magnitudes of all residual values
3585 * in the partition, so the actual mean is
3586 * mean/partition_samples
3588 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
3590 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3591 #ifdef DEBUG_VERBOSE
3592 fprintf(stderr, "clipping rice_parameter (%u -> %u) @3\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3594 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3597 #ifndef NO_RICE_SEARCH
3598 if(rice_parameter_search_dist) {
3599 if(rice_parameter < rice_parameter_search_dist)
3600 min_rice_parameter = 0;
3602 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
3603 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
3604 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3605 #ifdef DEBUG_VERBOSE
3606 fprintf(stderr, "clipping rice_parameter (%u -> %u) @4\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3608 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3612 min_rice_parameter = max_rice_parameter = rice_parameter;
3614 best_partition_bits = 0xffffffff;
3615 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3617 #ifdef VARIABLE_RICE_BITS
3618 const unsigned rice_parameter_estimate = rice_parameter-1;
3619 partition_bits = (1+rice_parameter) * partition_samples;
3623 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
3624 save_residual_sample = residual_sample;
3625 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
3626 #ifdef VARIABLE_RICE_BITS
3627 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
3629 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
3632 #ifndef NO_RICE_SEARCH
3633 if(rice_parameter != max_rice_parameter)
3634 residual_sample = save_residual_sample;
3635 if(partition_bits < best_partition_bits) {
3636 best_rice_parameter = rice_parameter;
3637 best_partition_bits = partition_bits;
3641 parameters[partition] = best_rice_parameter;
3642 bits_ += best_partition_bits;
3650 #ifdef DONT_ESTIMATE_RICE_BITS
3651 FLAC__bool set_partitioned_rice_with_precompute_(
3652 const FLAC__int32 residual[],
3653 const FLAC__uint64 abs_residual_partition_sums[],
3654 const unsigned raw_bits_per_partition[],
3655 const unsigned residual_samples,
3656 const unsigned predictor_order,
3657 const unsigned suggested_rice_parameter,
3658 const unsigned rice_parameter_search_dist,
3659 const unsigned partition_order,
3660 const FLAC__bool search_for_escapes,
3661 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3665 FLAC__bool set_partitioned_rice_with_precompute_(
3666 const FLAC__uint32 abs_residual[],
3667 const FLAC__uint64 abs_residual_partition_sums[],
3668 const unsigned raw_bits_per_partition[],
3669 const unsigned residual_samples,
3670 const unsigned predictor_order,
3671 const unsigned suggested_rice_parameter,
3672 const unsigned rice_parameter_search_dist,
3673 const unsigned partition_order,
3674 const FLAC__bool search_for_escapes,
3675 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3680 unsigned rice_parameter, partition_bits;
3681 #ifndef NO_RICE_SEARCH
3682 unsigned best_partition_bits;
3683 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
3686 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3687 unsigned *parameters, *raw_bits;
3689 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
3691 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
3692 parameters = partitioned_rice_contents->parameters;
3693 raw_bits = partitioned_rice_contents->raw_bits;
3695 if(partition_order == 0) {
3698 #ifndef NO_RICE_SEARCH
3699 if(rice_parameter_search_dist) {
3700 if(suggested_rice_parameter < rice_parameter_search_dist)
3701 min_rice_parameter = 0;
3703 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
3704 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
3705 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3706 #ifdef DEBUG_VERBOSE
3707 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3709 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3713 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
3715 best_partition_bits = 0xffffffff;
3716 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3718 #ifdef VARIABLE_RICE_BITS
3719 const unsigned rice_parameter_estimate = rice_parameter-1;
3720 partition_bits = (1+rice_parameter) * residual_samples;
3724 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
3725 for(i = 0; i < residual_samples; i++) {
3726 #ifdef VARIABLE_RICE_BITS
3727 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
3729 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
3732 #ifndef NO_RICE_SEARCH
3733 if(partition_bits < best_partition_bits) {
3734 best_rice_parameter = rice_parameter;
3735 best_partition_bits = partition_bits;
3739 if(search_for_escapes) {
3740 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
3741 if(flat_bits <= best_partition_bits) {
3742 raw_bits[0] = raw_bits_per_partition[0];
3743 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
3744 best_partition_bits = flat_bits;
3747 parameters[0] = best_rice_parameter;
3748 bits_ += best_partition_bits;
3751 unsigned partition, residual_sample, save_residual_sample, partition_sample;
3752 unsigned partition_samples;
3753 FLAC__uint64 mean, k;
3754 const unsigned partitions = 1u << partition_order;
3755 for(partition = residual_sample = 0; partition < partitions; partition++) {
3756 partition_samples = (residual_samples+predictor_order) >> partition_order;
3757 if(partition == 0) {
3758 if(partition_samples <= predictor_order)
3761 partition_samples -= predictor_order;
3763 mean = abs_residual_partition_sums[partition];
3764 /* we are basically calculating the size in bits of the
3765 * average residual magnitude in the partition:
3766 * rice_parameter = floor(log2(mean/partition_samples))
3767 * 'mean' is not a good name for the variable, it is
3768 * actually the sum of magnitudes of all residual values
3769 * in the partition, so the actual mean is
3770 * mean/partition_samples
3772 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
3774 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3775 #ifdef DEBUG_VERBOSE
3776 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3778 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3781 #ifndef NO_RICE_SEARCH
3782 if(rice_parameter_search_dist) {
3783 if(rice_parameter < rice_parameter_search_dist)
3784 min_rice_parameter = 0;
3786 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
3787 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
3788 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3789 #ifdef DEBUG_VERBOSE
3790 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3792 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3796 min_rice_parameter = max_rice_parameter = rice_parameter;
3798 best_partition_bits = 0xffffffff;
3799 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3801 #ifdef VARIABLE_RICE_BITS
3802 const unsigned rice_parameter_estimate = rice_parameter-1;
3803 partition_bits = (1+rice_parameter) * partition_samples;
3807 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
3808 save_residual_sample = residual_sample;
3809 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
3810 #ifdef VARIABLE_RICE_BITS
3811 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
3813 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
3816 #ifndef NO_RICE_SEARCH
3817 if(rice_parameter != max_rice_parameter)
3818 residual_sample = save_residual_sample;
3819 if(partition_bits < best_partition_bits) {
3820 best_rice_parameter = rice_parameter;
3821 best_partition_bits = partition_bits;
3825 if(search_for_escapes) {
3826 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
3827 if(flat_bits <= best_partition_bits) {
3828 raw_bits[partition] = raw_bits_per_partition[partition];
3829 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
3830 best_partition_bits = flat_bits;
3833 parameters[partition] = best_rice_parameter;
3834 bits_ += best_partition_bits;
3842 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
3847 for(i = 0; i < samples && !(x&1); i++)
3854 for(shift = 0; !(x&1); shift++)
3859 for(i = 0; i < samples; i++)
3860 signal[i] >>= shift;
3866 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
3870 for(channel = 0; channel < channels; channel++)
3871 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
3873 fifo->tail += wide_samples;
3875 FLAC__ASSERT(fifo->tail <= fifo->size);
3878 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
3881 unsigned sample, wide_sample;
3882 unsigned tail = fifo->tail;
3884 sample = input_offset * channels;
3885 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
3886 for(channel = 0; channel < channels; channel++)
3887 fifo->data[channel][tail] = input[sample++];
3892 FLAC__ASSERT(fifo->tail <= fifo->size);
3895 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
3897 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
3898 const unsigned encoded_bytes = encoder->private_->verify.output.bytes;
3901 if(encoder->private_->verify.needs_magic_hack) {
3902 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
3903 *bytes = FLAC__STREAM_SYNC_LENGTH;
3904 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
3905 encoder->private_->verify.needs_magic_hack = false;
3908 if(encoded_bytes == 0) {
3910 * If we get here, a FIFO underflow has occurred,
3911 * which means there is a bug somewhere.
3914 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
3916 else if(encoded_bytes < *bytes)
3917 *bytes = encoded_bytes;
3918 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
3919 encoder->private_->verify.output.data += *bytes;
3920 encoder->private_->verify.output.bytes -= *bytes;
3923 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
3926 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
3928 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
3930 const unsigned channels = FLAC__stream_decoder_get_channels(decoder);
3931 const unsigned blocksize = frame->header.blocksize;
3932 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
3934 for(channel = 0; channel < channels; channel++) {
3935 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
3936 unsigned i, sample = 0;
3937 FLAC__int32 expect = 0, got = 0;
3939 for(i = 0; i < blocksize; i++) {
3940 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
3942 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
3943 got = (FLAC__int32)buffer[channel][i];
3947 FLAC__ASSERT(i < blocksize);
3948 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
3949 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
3950 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
3951 encoder->private_->verify.error_stats.channel = channel;
3952 encoder->private_->verify.error_stats.sample = sample;
3953 encoder->private_->verify.error_stats.expected = expect;
3954 encoder->private_->verify.error_stats.got = got;
3955 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
3956 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
3959 /* dequeue the frame from the fifo */
3960 for(channel = 0; channel < channels; channel++) {
3961 memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail - blocksize);
3963 encoder->private_->verify.input_fifo.tail -= blocksize;
3964 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
3967 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
3969 (void)decoder, (void)metadata, (void)client_data;
3972 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
3974 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
3975 (void)decoder, (void)status;
3976 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
3979 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
3983 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
3984 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
3986 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
3989 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
3995 offset = ftello(encoder->private_->file);
3998 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4001 *absolute_byte_offset = (FLAC__uint64)offset;
4002 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4006 #ifdef FLAC__VALGRIND_TESTING
4007 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4009 size_t ret = fwrite(ptr, size, nmemb, stream);
4015 #define local__fwrite fwrite
4018 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
4020 (void)client_data, (void)samples, (void)current_frame;
4022 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4023 if(0 != encoder->private_->progress_callback && samples > 0)
4024 encoder->private_->progress_callback(encoder, encoder->private_->bytes_written, encoder->private_->samples_written, encoder->private_->frames_written, encoder->private_->total_frames_estimate, encoder->private_->client_data);
4025 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4028 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4032 * This will forcibly set stdout to binary mode (for OSes that require it)
4034 FILE *get_binary_stdout_()
4036 /* if something breaks here it is probably due to the presence or
4037 * absence of an underscore before the identifiers 'setmode',
4038 * 'fileno', and/or 'O_BINARY'; check your system header files.
4040 #if defined _MSC_VER || defined __MINGW32__
4041 _setmode(_fileno(stdout), _O_BINARY);
4042 #elif defined __CYGWIN__
4043 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4044 setmode(_fileno(stdout), _O_BINARY);
4045 #elif defined __EMX__
4046 setmode(fileno(stdout), O_BINARY);