1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #if defined _MSC_VER || defined __MINGW32__
37 #include <io.h> /* for _setmode() */
38 #include <fcntl.h> /* for _O_BINARY */
40 #if defined __CYGWIN__ || defined __EMX__
41 #include <io.h> /* for setmode(), O_BINARY */
42 #include <fcntl.h> /* for _O_BINARY */
46 #include <stdlib.h> /* for malloc() */
47 #include <string.h> /* for memcpy() */
48 #include <sys/types.h> /* for off_t */
49 #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
50 #if _MSC_VER <= 1600 || defined __BORLANDC__ /* @@@ [2G limit] */
55 #include "FLAC/assert.h"
56 #include "FLAC/stream_decoder.h"
57 #include "protected/stream_encoder.h"
58 #include "private/bitwriter.h"
59 #include "private/bitmath.h"
60 #include "private/crc.h"
61 #include "private/cpu.h"
62 #include "private/fixed.h"
63 #include "private/format.h"
64 #include "private/lpc.h"
65 #include "private/md5.h"
66 #include "private/memory.h"
68 #include "private/ogg_helper.h"
69 #include "private/ogg_mapping.h"
71 #include "private/stream_encoder_framing.h"
72 #include "private/window.h"
81 #define min(x,y) ((x)<(y)?(x):(y))
86 #define max(x,y) ((x)>(y)?(x):(y))
88 /* Exact Rice codeword length calculation is off by default. The simple
89 * (and fast) estimation (of how many bits a residual value will be
90 * encoded with) in this encoder is very good, almost always yielding
91 * compression within 0.1% of exact calculation.
93 #undef EXACT_RICE_BITS_CALCULATION
94 /* Rice parameter searching is off by default. The simple (and fast)
95 * parameter estimation in this encoder is very good, almost always
96 * yielding compression within 0.1% of the optimal parameters.
98 #undef ENABLE_RICE_PARAMETER_SEARCH
102 FLAC__int32 *data[FLAC__MAX_CHANNELS];
103 unsigned size; /* of each data[] in samples */
108 const FLAC__byte *data;
114 ENCODER_IN_MAGIC = 0,
115 ENCODER_IN_METADATA = 1,
119 static struct CompressionLevels {
120 FLAC__bool do_mid_side_stereo;
121 FLAC__bool loose_mid_side_stereo;
122 unsigned max_lpc_order;
123 unsigned qlp_coeff_precision;
124 FLAC__bool do_qlp_coeff_prec_search;
125 FLAC__bool do_escape_coding;
126 FLAC__bool do_exhaustive_model_search;
127 unsigned min_residual_partition_order;
128 unsigned max_residual_partition_order;
129 unsigned rice_parameter_search_dist;
130 } compression_levels_[] = {
131 { false, false, 0, 0, false, false, false, 0, 3, 0 },
132 { true , true , 0, 0, false, false, false, 0, 3, 0 },
133 { true , false, 0, 0, false, false, false, 0, 3, 0 },
134 { false, false, 6, 0, false, false, false, 0, 4, 0 },
135 { true , true , 8, 0, false, false, false, 0, 4, 0 },
136 { true , false, 8, 0, false, false, false, 0, 5, 0 },
137 { true , false, 8, 0, false, false, false, 0, 6, 0 },
138 { true , false, 8, 0, false, false, true , 0, 6, 0 },
139 { true , false, 12, 0, false, false, true , 0, 6, 0 }
143 /***********************************************************************
145 * Private class method prototypes
147 ***********************************************************************/
149 static void set_defaults_(FLAC__StreamEncoder *encoder);
150 static void free_(FLAC__StreamEncoder *encoder);
151 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
152 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
153 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
154 static void update_metadata_(const FLAC__StreamEncoder *encoder);
156 static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
158 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
159 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
161 static FLAC__bool process_subframe_(
162 FLAC__StreamEncoder *encoder,
163 unsigned min_partition_order,
164 unsigned max_partition_order,
165 const FLAC__FrameHeader *frame_header,
166 unsigned subframe_bps,
167 const FLAC__int32 integer_signal[],
168 FLAC__Subframe *subframe[2],
169 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
170 FLAC__int32 *residual[2],
171 unsigned *best_subframe,
175 static FLAC__bool add_subframe_(
176 FLAC__StreamEncoder *encoder,
178 unsigned subframe_bps,
179 const FLAC__Subframe *subframe,
180 FLAC__BitWriter *frame
183 static unsigned evaluate_constant_subframe_(
184 FLAC__StreamEncoder *encoder,
185 const FLAC__int32 signal,
187 unsigned subframe_bps,
188 FLAC__Subframe *subframe
191 static unsigned evaluate_fixed_subframe_(
192 FLAC__StreamEncoder *encoder,
193 const FLAC__int32 signal[],
194 FLAC__int32 residual[],
195 FLAC__uint64 abs_residual_partition_sums[],
196 unsigned raw_bits_per_partition[],
198 unsigned subframe_bps,
200 unsigned rice_parameter,
201 unsigned min_partition_order,
202 unsigned max_partition_order,
203 FLAC__bool do_escape_coding,
204 unsigned rice_parameter_search_dist,
205 FLAC__Subframe *subframe,
206 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
209 #ifndef FLAC__INTEGER_ONLY_LIBRARY
210 static unsigned evaluate_lpc_subframe_(
211 FLAC__StreamEncoder *encoder,
212 const FLAC__int32 signal[],
213 FLAC__int32 residual[],
214 FLAC__uint64 abs_residual_partition_sums[],
215 unsigned raw_bits_per_partition[],
216 const FLAC__real lp_coeff[],
218 unsigned subframe_bps,
220 unsigned qlp_coeff_precision,
221 unsigned rice_parameter,
222 unsigned min_partition_order,
223 unsigned max_partition_order,
224 FLAC__bool do_escape_coding,
225 unsigned rice_parameter_search_dist,
226 FLAC__Subframe *subframe,
227 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
231 static unsigned evaluate_verbatim_subframe_(
232 FLAC__StreamEncoder *encoder,
233 const FLAC__int32 signal[],
235 unsigned subframe_bps,
236 FLAC__Subframe *subframe
239 static unsigned find_best_partition_order_(
240 struct FLAC__StreamEncoderPrivate *private_,
241 const FLAC__int32 residual[],
242 FLAC__uint64 abs_residual_partition_sums[],
243 unsigned raw_bits_per_partition[],
244 unsigned residual_samples,
245 unsigned predictor_order,
246 unsigned rice_parameter,
247 unsigned min_partition_order,
248 unsigned max_partition_order,
250 FLAC__bool do_escape_coding,
251 unsigned rice_parameter_search_dist,
252 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
255 static void precompute_partition_info_sums_(
256 const FLAC__int32 residual[],
257 FLAC__uint64 abs_residual_partition_sums[],
258 unsigned residual_samples,
259 unsigned predictor_order,
260 unsigned min_partition_order,
261 unsigned max_partition_order,
265 static void precompute_partition_info_escapes_(
266 const FLAC__int32 residual[],
267 unsigned raw_bits_per_partition[],
268 unsigned residual_samples,
269 unsigned predictor_order,
270 unsigned min_partition_order,
271 unsigned max_partition_order
274 static FLAC__bool set_partitioned_rice_(
275 #ifdef EXACT_RICE_BITS_CALCULATION
276 const FLAC__int32 residual[],
278 const FLAC__uint64 abs_residual_partition_sums[],
279 const unsigned raw_bits_per_partition[],
280 const unsigned residual_samples,
281 const unsigned predictor_order,
282 const unsigned suggested_rice_parameter,
283 const unsigned rice_parameter_search_dist,
284 const unsigned partition_order,
285 const FLAC__bool search_for_escapes,
286 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
290 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
292 /* verify-related routines: */
293 static void append_to_verify_fifo_(
294 verify_input_fifo *fifo,
295 const FLAC__int32 * const input[],
296 unsigned input_offset,
298 unsigned wide_samples
301 static void append_to_verify_fifo_interleaved_(
302 verify_input_fifo *fifo,
303 const FLAC__int32 input[],
304 unsigned input_offset,
306 unsigned wide_samples
309 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
310 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
311 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
312 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
314 static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
315 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
316 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
317 static FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data);
318 static FILE *get_binary_stdout_(void);
321 /***********************************************************************
325 ***********************************************************************/
327 typedef struct FLAC__StreamEncoderPrivate {
328 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
329 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
330 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
331 #ifndef FLAC__INTEGER_ONLY_LIBRARY
332 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */
333 FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */
334 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
335 FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */
337 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
338 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
339 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
340 FLAC__int32 *residual_workspace_mid_side[2][2];
341 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
342 FLAC__Subframe subframe_workspace_mid_side[2][2];
343 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
344 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
345 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
346 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
347 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
348 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
349 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
350 unsigned best_subframe_mid_side[2];
351 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
352 unsigned best_subframe_bits_mid_side[2];
353 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
354 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
355 FLAC__BitWriter *frame; /* the current frame being worked on */
356 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
357 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
358 FLAC__ChannelAssignment last_channel_assignment;
359 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
360 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
361 unsigned current_sample_number;
362 unsigned current_frame_number;
363 FLAC__MD5Context md5context;
364 FLAC__CPUInfo cpuinfo;
365 #ifndef FLAC__INTEGER_ONLY_LIBRARY
366 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
368 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
370 #ifndef FLAC__INTEGER_ONLY_LIBRARY
371 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
372 void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
373 void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
374 void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
376 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
377 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
378 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
379 FLAC__bool disable_constant_subframes;
380 FLAC__bool disable_fixed_subframes;
381 FLAC__bool disable_verbatim_subframes;
385 FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
386 FLAC__StreamEncoderSeekCallback seek_callback;
387 FLAC__StreamEncoderTellCallback tell_callback;
388 FLAC__StreamEncoderWriteCallback write_callback;
389 FLAC__StreamEncoderMetadataCallback metadata_callback;
390 FLAC__StreamEncoderProgressCallback progress_callback;
392 unsigned first_seekpoint_to_check;
393 FILE *file; /* only used when encoding to a file */
394 FLAC__uint64 bytes_written;
395 FLAC__uint64 samples_written;
396 unsigned frames_written;
397 unsigned total_frames_estimate;
398 /* unaligned (original) pointers to allocated data */
399 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
400 FLAC__int32 *integer_signal_mid_side_unaligned[2];
401 #ifndef FLAC__INTEGER_ONLY_LIBRARY
402 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */
403 FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */
404 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
405 FLAC__real *windowed_signal_unaligned;
407 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
408 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
409 FLAC__uint64 *abs_residual_partition_sums_unaligned;
410 unsigned *raw_bits_per_partition_unaligned;
412 * These fields have been moved here from private function local
413 * declarations merely to save stack space during encoding.
415 #ifndef FLAC__INTEGER_ONLY_LIBRARY
416 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
418 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
420 * The data for the verify section
423 FLAC__StreamDecoder *decoder;
424 EncoderStateHint state_hint;
425 FLAC__bool needs_magic_hack;
426 verify_input_fifo input_fifo;
427 verify_output output;
429 FLAC__uint64 absolute_sample;
430 unsigned frame_number;
433 FLAC__int32 expected;
437 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
438 } FLAC__StreamEncoderPrivate;
440 /***********************************************************************
442 * Public static class data
444 ***********************************************************************/
446 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
447 "FLAC__STREAM_ENCODER_OK",
448 "FLAC__STREAM_ENCODER_UNINITIALIZED",
449 "FLAC__STREAM_ENCODER_OGG_ERROR",
450 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
451 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
452 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
453 "FLAC__STREAM_ENCODER_IO_ERROR",
454 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
455 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
458 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
459 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
460 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
461 "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
462 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
463 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
464 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
465 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
466 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
467 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
468 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
469 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
470 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
471 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
472 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
475 FLAC_API const char * const FLAC__treamEncoderReadStatusString[] = {
476 "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
477 "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
478 "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
479 "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
482 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
483 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
484 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
487 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
488 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
489 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
490 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
493 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
494 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
495 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
496 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
499 /* Number of samples that will be overread to watch for end of stream. By
500 * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
501 * always try to read blocksize+1 samples before encoding a block, so that
502 * even if the stream has a total sample count that is an integral multiple
503 * of the blocksize, we will still notice when we are encoding the last
504 * block. This is needed, for example, to correctly set the end-of-stream
505 * marker in Ogg FLAC.
507 * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
508 * not really any reason to change it.
510 static const unsigned OVERREAD_ = 1;
512 /***********************************************************************
514 * Class constructor/destructor
517 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void)
519 FLAC__StreamEncoder *encoder;
522 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
524 encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
529 encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
530 if(encoder->protected_ == 0) {
535 encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
536 if(encoder->private_ == 0) {
537 free(encoder->protected_);
542 encoder->private_->frame = FLAC__bitwriter_new();
543 if(encoder->private_->frame == 0) {
544 free(encoder->private_);
545 free(encoder->protected_);
550 encoder->private_->file = 0;
552 set_defaults_(encoder);
554 encoder->private_->is_being_deleted = false;
556 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
557 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
558 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
560 for(i = 0; i < 2; i++) {
561 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
562 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
564 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
565 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
566 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
568 for(i = 0; i < 2; i++) {
569 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
570 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
573 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
574 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
575 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
577 for(i = 0; i < 2; i++) {
578 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
579 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
581 for(i = 0; i < 2; i++)
582 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
584 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
589 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
593 FLAC__ASSERT(0 != encoder);
594 FLAC__ASSERT(0 != encoder->protected_);
595 FLAC__ASSERT(0 != encoder->private_);
596 FLAC__ASSERT(0 != encoder->private_->frame);
598 encoder->private_->is_being_deleted = true;
600 (void)FLAC__stream_encoder_finish(encoder);
602 if(0 != encoder->private_->verify.decoder)
603 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
605 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
606 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
607 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
609 for(i = 0; i < 2; i++) {
610 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
611 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
613 for(i = 0; i < 2; i++)
614 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
616 FLAC__bitwriter_delete(encoder->private_->frame);
617 free(encoder->private_);
618 free(encoder->protected_);
622 /***********************************************************************
624 * Public class methods
626 ***********************************************************************/
628 static FLAC__StreamEncoderInitStatus init_stream_internal_(
629 FLAC__StreamEncoder *encoder,
630 FLAC__StreamEncoderReadCallback read_callback,
631 FLAC__StreamEncoderWriteCallback write_callback,
632 FLAC__StreamEncoderSeekCallback seek_callback,
633 FLAC__StreamEncoderTellCallback tell_callback,
634 FLAC__StreamEncoderMetadataCallback metadata_callback,
640 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
642 FLAC__ASSERT(0 != encoder);
644 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
645 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
649 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
652 if(0 == write_callback || (seek_callback && 0 == tell_callback))
653 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
655 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
656 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
658 if(encoder->protected_->channels != 2) {
659 encoder->protected_->do_mid_side_stereo = false;
660 encoder->protected_->loose_mid_side_stereo = false;
662 else if(!encoder->protected_->do_mid_side_stereo)
663 encoder->protected_->loose_mid_side_stereo = false;
665 if(encoder->protected_->bits_per_sample >= 32)
666 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
668 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
669 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
671 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
672 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
674 if(encoder->protected_->blocksize == 0) {
675 if(encoder->protected_->max_lpc_order == 0)
676 encoder->protected_->blocksize = 1152;
678 encoder->protected_->blocksize = 4096;
681 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
682 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
684 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
685 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
687 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
688 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
690 if(encoder->protected_->qlp_coeff_precision == 0) {
691 if(encoder->protected_->bits_per_sample < 16) {
692 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
693 /* @@@ until then we'll make a guess */
694 encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
696 else if(encoder->protected_->bits_per_sample == 16) {
697 if(encoder->protected_->blocksize <= 192)
698 encoder->protected_->qlp_coeff_precision = 7;
699 else if(encoder->protected_->blocksize <= 384)
700 encoder->protected_->qlp_coeff_precision = 8;
701 else if(encoder->protected_->blocksize <= 576)
702 encoder->protected_->qlp_coeff_precision = 9;
703 else if(encoder->protected_->blocksize <= 1152)
704 encoder->protected_->qlp_coeff_precision = 10;
705 else if(encoder->protected_->blocksize <= 2304)
706 encoder->protected_->qlp_coeff_precision = 11;
707 else if(encoder->protected_->blocksize <= 4608)
708 encoder->protected_->qlp_coeff_precision = 12;
710 encoder->protected_->qlp_coeff_precision = 13;
713 if(encoder->protected_->blocksize <= 384)
714 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
715 else if(encoder->protected_->blocksize <= 1152)
716 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
718 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
720 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
722 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
723 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
725 if(encoder->protected_->streamable_subset) {
727 encoder->protected_->blocksize != 192 &&
728 encoder->protected_->blocksize != 576 &&
729 encoder->protected_->blocksize != 1152 &&
730 encoder->protected_->blocksize != 2304 &&
731 encoder->protected_->blocksize != 4608 &&
732 encoder->protected_->blocksize != 256 &&
733 encoder->protected_->blocksize != 512 &&
734 encoder->protected_->blocksize != 1024 &&
735 encoder->protected_->blocksize != 2048 &&
736 encoder->protected_->blocksize != 4096 &&
737 encoder->protected_->blocksize != 8192 &&
738 encoder->protected_->blocksize != 16384
740 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
741 if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate))
742 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
744 encoder->protected_->bits_per_sample != 8 &&
745 encoder->protected_->bits_per_sample != 12 &&
746 encoder->protected_->bits_per_sample != 16 &&
747 encoder->protected_->bits_per_sample != 20 &&
748 encoder->protected_->bits_per_sample != 24
750 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
751 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
752 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
754 encoder->protected_->sample_rate <= 48000 &&
756 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
757 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
760 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
764 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
765 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
766 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
767 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
770 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
771 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
773 for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
774 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
775 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
777 encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
778 encoder->protected_->metadata[0] = vc;
784 /* keep track of any SEEKTABLE block */
785 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
787 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
788 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
789 encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
790 break; /* take only the first one */
795 /* validate metadata */
796 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
797 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
798 metadata_has_seektable = false;
799 metadata_has_vorbis_comment = false;
800 metadata_picture_has_type1 = false;
801 metadata_picture_has_type2 = false;
802 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
803 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
804 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
805 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
806 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
807 if(metadata_has_seektable) /* only one is allowed */
808 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
809 metadata_has_seektable = true;
810 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
811 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
813 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
814 if(metadata_has_vorbis_comment) /* only one is allowed */
815 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
816 metadata_has_vorbis_comment = true;
818 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
819 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
820 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
822 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
823 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
824 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
825 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
826 if(metadata_picture_has_type1) /* there should only be 1 per stream */
827 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
828 metadata_picture_has_type1 = true;
829 /* standard icon must be 32x32 pixel PNG */
831 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
833 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
834 m->data.picture.width != 32 ||
835 m->data.picture.height != 32
838 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
840 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
841 if(metadata_picture_has_type2) /* there should only be 1 per stream */
842 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
843 metadata_picture_has_type2 = true;
848 encoder->private_->input_capacity = 0;
849 for(i = 0; i < encoder->protected_->channels; i++) {
850 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
851 #ifndef FLAC__INTEGER_ONLY_LIBRARY
852 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
855 for(i = 0; i < 2; i++) {
856 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
857 #ifndef FLAC__INTEGER_ONLY_LIBRARY
858 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
861 #ifndef FLAC__INTEGER_ONLY_LIBRARY
862 for(i = 0; i < encoder->protected_->num_apodizations; i++)
863 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
864 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
866 for(i = 0; i < encoder->protected_->channels; i++) {
867 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
868 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
869 encoder->private_->best_subframe[i] = 0;
871 for(i = 0; i < 2; i++) {
872 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
873 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
874 encoder->private_->best_subframe_mid_side[i] = 0;
876 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
877 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
878 #ifndef FLAC__INTEGER_ONLY_LIBRARY
879 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
881 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
882 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
883 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
884 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
885 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
886 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
887 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);
889 if(encoder->private_->loose_mid_side_stereo_frames == 0)
890 encoder->private_->loose_mid_side_stereo_frames = 1;
891 encoder->private_->loose_mid_side_stereo_frame_count = 0;
892 encoder->private_->current_sample_number = 0;
893 encoder->private_->current_frame_number = 0;
895 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
896 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? */
897 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
900 * get the CPU info and set the function pointers
902 FLAC__cpu_info(&encoder->private_->cpuinfo);
903 /* first default to the non-asm routines */
904 #ifndef FLAC__INTEGER_ONLY_LIBRARY
905 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
907 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
908 #ifndef FLAC__INTEGER_ONLY_LIBRARY
909 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
910 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
911 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
913 /* now override with asm where appropriate */
914 #ifndef FLAC__INTEGER_ONLY_LIBRARY
915 # ifndef FLAC__NO_ASM
916 if(encoder->private_->cpuinfo.use_asm) {
917 # ifdef FLAC__CPU_IA32
918 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
919 # ifdef FLAC__HAS_NASM
920 if(encoder->private_->cpuinfo.data.ia32.sse) {
921 if(encoder->protected_->max_lpc_order < 4)
922 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
923 else if(encoder->protected_->max_lpc_order < 8)
924 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
925 else if(encoder->protected_->max_lpc_order < 12)
926 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
928 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
930 else if(encoder->private_->cpuinfo.data.ia32._3dnow)
931 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
933 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
934 if(encoder->private_->cpuinfo.data.ia32.mmx) {
935 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
936 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
939 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
940 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
942 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
943 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
944 # endif /* FLAC__HAS_NASM */
945 # endif /* FLAC__CPU_IA32 */
947 # endif /* !FLAC__NO_ASM */
948 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
949 /* finally override based on wide-ness if necessary */
950 if(encoder->private_->use_wide_by_block) {
951 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
954 /* set state to OK; from here on, errors are fatal and we'll override the state then */
955 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
958 encoder->private_->is_ogg = is_ogg;
959 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
960 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
961 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
965 encoder->private_->read_callback = read_callback;
966 encoder->private_->write_callback = write_callback;
967 encoder->private_->seek_callback = seek_callback;
968 encoder->private_->tell_callback = tell_callback;
969 encoder->private_->metadata_callback = metadata_callback;
970 encoder->private_->client_data = client_data;
972 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
973 /* the above function sets the state for us in case of an error */
974 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
977 if(!FLAC__bitwriter_init(encoder->private_->frame)) {
978 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
979 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
983 * Set up the verify stuff if necessary
985 if(encoder->protected_->verify) {
987 * First, set up the fifo which will hold the
988 * original signal to compare against
990 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
991 for(i = 0; i < encoder->protected_->channels; i++) {
992 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size))) {
993 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
994 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
997 encoder->private_->verify.input_fifo.tail = 0;
1000 * Now set up a stream decoder for verification
1002 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
1003 if(0 == encoder->private_->verify.decoder) {
1004 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1005 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1008 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) {
1009 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1010 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1013 encoder->private_->verify.error_stats.absolute_sample = 0;
1014 encoder->private_->verify.error_stats.frame_number = 0;
1015 encoder->private_->verify.error_stats.channel = 0;
1016 encoder->private_->verify.error_stats.sample = 0;
1017 encoder->private_->verify.error_stats.expected = 0;
1018 encoder->private_->verify.error_stats.got = 0;
1021 * These must be done before we write any metadata, because that
1022 * calls the write_callback, which uses these values.
1024 encoder->private_->first_seekpoint_to_check = 0;
1025 encoder->private_->samples_written = 0;
1026 encoder->protected_->streaminfo_offset = 0;
1027 encoder->protected_->seektable_offset = 0;
1028 encoder->protected_->audio_offset = 0;
1031 * write the stream header
1033 if(encoder->protected_->verify)
1034 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1035 if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1036 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1037 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1039 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1040 /* the above function sets the state for us in case of an error */
1041 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1045 * write the STREAMINFO metadata block
1047 if(encoder->protected_->verify)
1048 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1049 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1050 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1051 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1052 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1053 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1054 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1055 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1056 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1057 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1058 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1059 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1060 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1061 if(encoder->protected_->do_md5)
1062 FLAC__MD5Init(&encoder->private_->md5context);
1063 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1064 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1065 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1067 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1068 /* the above function sets the state for us in case of an error */
1069 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1073 * Now that the STREAMINFO block is written, we can init this to an
1074 * absurdly-high value...
1076 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1077 /* ... and clear this to 0 */
1078 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1081 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1082 * if not, we will write an empty one (FLAC__add_metadata_block()
1083 * automatically supplies the vendor string).
1085 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1086 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1087 * true it will have already insured that the metadata list is properly
1090 if(!metadata_has_vorbis_comment) {
1091 FLAC__StreamMetadata vorbis_comment;
1092 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1093 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1094 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1095 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1096 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1097 vorbis_comment.data.vorbis_comment.num_comments = 0;
1098 vorbis_comment.data.vorbis_comment.comments = 0;
1099 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1100 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1101 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1103 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1104 /* the above function sets the state for us in case of an error */
1105 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1110 * write the user's metadata blocks
1112 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1113 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1114 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1115 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1116 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1118 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1119 /* the above function sets the state for us in case of an error */
1120 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1124 /* now that all the metadata is written, we save the stream offset */
1125 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 */
1126 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1127 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1130 if(encoder->protected_->verify)
1131 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1133 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1136 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1137 FLAC__StreamEncoder *encoder,
1138 FLAC__StreamEncoderWriteCallback write_callback,
1139 FLAC__StreamEncoderSeekCallback seek_callback,
1140 FLAC__StreamEncoderTellCallback tell_callback,
1141 FLAC__StreamEncoderMetadataCallback metadata_callback,
1145 return init_stream_internal_(
1147 /*read_callback=*/0,
1157 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1158 FLAC__StreamEncoder *encoder,
1159 FLAC__StreamEncoderReadCallback read_callback,
1160 FLAC__StreamEncoderWriteCallback write_callback,
1161 FLAC__StreamEncoderSeekCallback seek_callback,
1162 FLAC__StreamEncoderTellCallback tell_callback,
1163 FLAC__StreamEncoderMetadataCallback metadata_callback,
1167 return init_stream_internal_(
1179 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1180 FLAC__StreamEncoder *encoder,
1182 FLAC__StreamEncoderProgressCallback progress_callback,
1187 FLAC__StreamEncoderInitStatus init_status;
1189 FLAC__ASSERT(0 != encoder);
1190 FLAC__ASSERT(0 != file);
1192 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1193 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1195 /* double protection */
1197 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1198 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1202 * To make sure that our file does not go unclosed after an error, we
1203 * must assign the FILE pointer before any further error can occur in
1207 file = get_binary_stdout_(); /* just to be safe */
1209 encoder->private_->file = file;
1211 encoder->private_->progress_callback = progress_callback;
1212 encoder->private_->bytes_written = 0;
1213 encoder->private_->samples_written = 0;
1214 encoder->private_->frames_written = 0;
1216 init_status = init_stream_internal_(
1218 encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
1219 file_write_callback_,
1220 encoder->private_->file == stdout? 0 : file_seek_callback_,
1221 encoder->private_->file == stdout? 0 : file_tell_callback_,
1222 /*metadata_callback=*/0,
1226 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1227 /* the above function sets the state for us in case of an error */
1232 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1234 FLAC__ASSERT(blocksize != 0);
1235 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1241 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1242 FLAC__StreamEncoder *encoder,
1244 FLAC__StreamEncoderProgressCallback progress_callback,
1248 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1251 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1252 FLAC__StreamEncoder *encoder,
1254 FLAC__StreamEncoderProgressCallback progress_callback,
1258 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1261 static FLAC__StreamEncoderInitStatus init_file_internal_(
1262 FLAC__StreamEncoder *encoder,
1263 const char *filename,
1264 FLAC__StreamEncoderProgressCallback progress_callback,
1271 FLAC__ASSERT(0 != encoder);
1274 * To make sure that our file does not go unclosed after an error, we
1275 * have to do the same entrance checks here that are later performed
1276 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1278 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1279 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1281 file = filename? fopen(filename, "w+b") : stdout;
1284 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1285 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1288 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1291 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
1292 FLAC__StreamEncoder *encoder,
1293 const char *filename,
1294 FLAC__StreamEncoderProgressCallback progress_callback,
1298 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
1301 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1302 FLAC__StreamEncoder *encoder,
1303 const char *filename,
1304 FLAC__StreamEncoderProgressCallback progress_callback,
1308 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1311 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1313 FLAC__bool error = false;
1315 FLAC__ASSERT(0 != encoder);
1316 FLAC__ASSERT(0 != encoder->private_);
1317 FLAC__ASSERT(0 != encoder->protected_);
1319 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1322 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1323 if(encoder->private_->current_sample_number != 0) {
1324 const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
1325 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1326 if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
1331 if(encoder->protected_->do_md5)
1332 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1334 if(!encoder->private_->is_being_deleted) {
1335 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
1336 if(encoder->private_->seek_callback) {
1338 if(encoder->private_->is_ogg)
1339 update_ogg_metadata_(encoder);
1342 update_metadata_(encoder);
1344 /* check if an error occurred while updating metadata */
1345 if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
1348 if(encoder->private_->metadata_callback)
1349 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1352 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
1354 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1359 if(0 != encoder->private_->file) {
1360 if(encoder->private_->file != stdout)
1361 fclose(encoder->private_->file);
1362 encoder->private_->file = 0;
1366 if(encoder->private_->is_ogg)
1367 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1371 set_defaults_(encoder);
1374 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1379 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1381 FLAC__ASSERT(0 != encoder);
1382 FLAC__ASSERT(0 != encoder->private_);
1383 FLAC__ASSERT(0 != encoder->protected_);
1384 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1387 /* can't check encoder->private_->is_ogg since that's not set until init time */
1388 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1396 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1398 FLAC__ASSERT(0 != encoder);
1399 FLAC__ASSERT(0 != encoder->private_);
1400 FLAC__ASSERT(0 != encoder->protected_);
1401 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1403 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1404 encoder->protected_->verify = value;
1409 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1411 FLAC__ASSERT(0 != encoder);
1412 FLAC__ASSERT(0 != encoder->private_);
1413 FLAC__ASSERT(0 != encoder->protected_);
1414 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1416 encoder->protected_->streamable_subset = value;
1420 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value)
1422 FLAC__ASSERT(0 != encoder);
1423 FLAC__ASSERT(0 != encoder->private_);
1424 FLAC__ASSERT(0 != encoder->protected_);
1425 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1427 encoder->protected_->do_md5 = value;
1431 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1433 FLAC__ASSERT(0 != encoder);
1434 FLAC__ASSERT(0 != encoder->private_);
1435 FLAC__ASSERT(0 != encoder->protected_);
1436 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1438 encoder->protected_->channels = value;
1442 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1444 FLAC__ASSERT(0 != encoder);
1445 FLAC__ASSERT(0 != encoder->private_);
1446 FLAC__ASSERT(0 != encoder->protected_);
1447 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1449 encoder->protected_->bits_per_sample = value;
1453 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1455 FLAC__ASSERT(0 != encoder);
1456 FLAC__ASSERT(0 != encoder->private_);
1457 FLAC__ASSERT(0 != encoder->protected_);
1458 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1460 encoder->protected_->sample_rate = value;
1464 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1466 FLAC__bool ok = true;
1467 FLAC__ASSERT(0 != encoder);
1468 FLAC__ASSERT(0 != encoder->private_);
1469 FLAC__ASSERT(0 != encoder->protected_);
1470 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1472 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1473 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1474 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1475 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1478 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1479 /* but it's too hard to specify the string in a locale-specific way */
1481 encoder->protected_->num_apodizations = 1;
1482 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1483 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1485 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1486 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1487 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1488 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1489 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1490 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1491 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1492 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1496 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1498 FLAC__ASSERT(0 != encoder);
1499 FLAC__ASSERT(0 != encoder->private_);
1500 FLAC__ASSERT(0 != encoder->protected_);
1501 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1503 encoder->protected_->blocksize = value;
1507 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1509 FLAC__ASSERT(0 != encoder);
1510 FLAC__ASSERT(0 != encoder->private_);
1511 FLAC__ASSERT(0 != encoder->protected_);
1512 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1514 encoder->protected_->do_mid_side_stereo = value;
1518 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1520 FLAC__ASSERT(0 != encoder);
1521 FLAC__ASSERT(0 != encoder->private_);
1522 FLAC__ASSERT(0 != encoder->protected_);
1523 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1525 encoder->protected_->loose_mid_side_stereo = value;
1529 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1531 FLAC__ASSERT(0 != encoder);
1532 FLAC__ASSERT(0 != encoder->private_);
1533 FLAC__ASSERT(0 != encoder->protected_);
1534 FLAC__ASSERT(0 != specification);
1535 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1537 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1538 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1540 encoder->protected_->num_apodizations = 0;
1542 const char *s = strchr(specification, ';');
1543 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1544 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1545 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1546 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1547 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1548 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1549 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1550 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1551 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1552 else if(n==6 && 0 == strncmp("connes" , specification, n))
1553 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1554 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1555 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1556 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1557 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1558 if (stddev > 0.0 && stddev <= 0.5) {
1559 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1560 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1563 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1564 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1565 else if(n==4 && 0 == strncmp("hann" , specification, n))
1566 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1567 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1568 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1569 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1570 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1571 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1572 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1573 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1574 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1575 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1576 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1577 if (p >= 0.0 && p <= 1.0) {
1578 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1579 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1582 else if(n==5 && 0 == strncmp("welch" , specification, n))
1583 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1584 if (encoder->protected_->num_apodizations == 32)
1587 specification = s+1;
1591 if(encoder->protected_->num_apodizations == 0) {
1592 encoder->protected_->num_apodizations = 1;
1593 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1594 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1600 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1602 FLAC__ASSERT(0 != encoder);
1603 FLAC__ASSERT(0 != encoder->private_);
1604 FLAC__ASSERT(0 != encoder->protected_);
1605 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1607 encoder->protected_->max_lpc_order = value;
1611 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1613 FLAC__ASSERT(0 != encoder);
1614 FLAC__ASSERT(0 != encoder->private_);
1615 FLAC__ASSERT(0 != encoder->protected_);
1616 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1618 encoder->protected_->qlp_coeff_precision = value;
1622 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1624 FLAC__ASSERT(0 != encoder);
1625 FLAC__ASSERT(0 != encoder->private_);
1626 FLAC__ASSERT(0 != encoder->protected_);
1627 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1629 encoder->protected_->do_qlp_coeff_prec_search = value;
1633 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1635 FLAC__ASSERT(0 != encoder);
1636 FLAC__ASSERT(0 != encoder->private_);
1637 FLAC__ASSERT(0 != encoder->protected_);
1638 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1641 /*@@@ deprecated: */
1642 encoder->protected_->do_escape_coding = value;
1649 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1651 FLAC__ASSERT(0 != encoder);
1652 FLAC__ASSERT(0 != encoder->private_);
1653 FLAC__ASSERT(0 != encoder->protected_);
1654 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1656 encoder->protected_->do_exhaustive_model_search = value;
1660 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1662 FLAC__ASSERT(0 != encoder);
1663 FLAC__ASSERT(0 != encoder->private_);
1664 FLAC__ASSERT(0 != encoder->protected_);
1665 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1667 encoder->protected_->min_residual_partition_order = value;
1671 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1673 FLAC__ASSERT(0 != encoder);
1674 FLAC__ASSERT(0 != encoder->private_);
1675 FLAC__ASSERT(0 != encoder->protected_);
1676 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1678 encoder->protected_->max_residual_partition_order = value;
1682 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1684 FLAC__ASSERT(0 != encoder);
1685 FLAC__ASSERT(0 != encoder->private_);
1686 FLAC__ASSERT(0 != encoder->protected_);
1687 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1690 /*@@@ deprecated: */
1691 encoder->protected_->rice_parameter_search_dist = value;
1698 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1700 FLAC__ASSERT(0 != encoder);
1701 FLAC__ASSERT(0 != encoder->private_);
1702 FLAC__ASSERT(0 != encoder->protected_);
1703 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1705 encoder->protected_->total_samples_estimate = value;
1709 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1711 FLAC__ASSERT(0 != encoder);
1712 FLAC__ASSERT(0 != encoder->private_);
1713 FLAC__ASSERT(0 != encoder->protected_);
1714 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1720 /* realloc() does not do exactly what we want so... */
1721 if(encoder->protected_->metadata) {
1722 free(encoder->protected_->metadata);
1723 encoder->protected_->metadata = 0;
1724 encoder->protected_->num_metadata_blocks = 0;
1727 FLAC__StreamMetadata **m;
1728 if(0 == (m = (FLAC__StreamMetadata**)malloc(sizeof(m[0]) * num_blocks)))
1730 memcpy(m, metadata, sizeof(m[0]) * num_blocks);
1731 encoder->protected_->metadata = m;
1732 encoder->protected_->num_metadata_blocks = num_blocks;
1735 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1742 * These three functions are not static, but not publically exposed in
1743 * include/FLAC/ either. They are used by the test suite.
1745 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1747 FLAC__ASSERT(0 != encoder);
1748 FLAC__ASSERT(0 != encoder->private_);
1749 FLAC__ASSERT(0 != encoder->protected_);
1750 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1752 encoder->private_->disable_constant_subframes = value;
1756 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1758 FLAC__ASSERT(0 != encoder);
1759 FLAC__ASSERT(0 != encoder->private_);
1760 FLAC__ASSERT(0 != encoder->protected_);
1761 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1763 encoder->private_->disable_fixed_subframes = value;
1767 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1769 FLAC__ASSERT(0 != encoder);
1770 FLAC__ASSERT(0 != encoder->private_);
1771 FLAC__ASSERT(0 != encoder->protected_);
1772 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1774 encoder->private_->disable_verbatim_subframes = value;
1778 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1780 FLAC__ASSERT(0 != encoder);
1781 FLAC__ASSERT(0 != encoder->private_);
1782 FLAC__ASSERT(0 != encoder->protected_);
1783 return encoder->protected_->state;
1786 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1788 FLAC__ASSERT(0 != encoder);
1789 FLAC__ASSERT(0 != encoder->private_);
1790 FLAC__ASSERT(0 != encoder->protected_);
1791 if(encoder->protected_->verify)
1792 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1794 return FLAC__STREAM_DECODER_UNINITIALIZED;
1797 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1799 FLAC__ASSERT(0 != encoder);
1800 FLAC__ASSERT(0 != encoder->private_);
1801 FLAC__ASSERT(0 != encoder->protected_);
1802 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1803 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1805 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1808 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)
1810 FLAC__ASSERT(0 != encoder);
1811 FLAC__ASSERT(0 != encoder->private_);
1812 FLAC__ASSERT(0 != encoder->protected_);
1813 if(0 != absolute_sample)
1814 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1815 if(0 != frame_number)
1816 *frame_number = encoder->private_->verify.error_stats.frame_number;
1818 *channel = encoder->private_->verify.error_stats.channel;
1820 *sample = encoder->private_->verify.error_stats.sample;
1822 *expected = encoder->private_->verify.error_stats.expected;
1824 *got = encoder->private_->verify.error_stats.got;
1827 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1829 FLAC__ASSERT(0 != encoder);
1830 FLAC__ASSERT(0 != encoder->private_);
1831 FLAC__ASSERT(0 != encoder->protected_);
1832 return encoder->protected_->verify;
1835 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1837 FLAC__ASSERT(0 != encoder);
1838 FLAC__ASSERT(0 != encoder->private_);
1839 FLAC__ASSERT(0 != encoder->protected_);
1840 return encoder->protected_->streamable_subset;
1843 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder)
1845 FLAC__ASSERT(0 != encoder);
1846 FLAC__ASSERT(0 != encoder->private_);
1847 FLAC__ASSERT(0 != encoder->protected_);
1848 return encoder->protected_->do_md5;
1851 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1853 FLAC__ASSERT(0 != encoder);
1854 FLAC__ASSERT(0 != encoder->private_);
1855 FLAC__ASSERT(0 != encoder->protected_);
1856 return encoder->protected_->channels;
1859 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1861 FLAC__ASSERT(0 != encoder);
1862 FLAC__ASSERT(0 != encoder->private_);
1863 FLAC__ASSERT(0 != encoder->protected_);
1864 return encoder->protected_->bits_per_sample;
1867 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1869 FLAC__ASSERT(0 != encoder);
1870 FLAC__ASSERT(0 != encoder->private_);
1871 FLAC__ASSERT(0 != encoder->protected_);
1872 return encoder->protected_->sample_rate;
1875 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1877 FLAC__ASSERT(0 != encoder);
1878 FLAC__ASSERT(0 != encoder->private_);
1879 FLAC__ASSERT(0 != encoder->protected_);
1880 return encoder->protected_->blocksize;
1883 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1885 FLAC__ASSERT(0 != encoder);
1886 FLAC__ASSERT(0 != encoder->private_);
1887 FLAC__ASSERT(0 != encoder->protected_);
1888 return encoder->protected_->do_mid_side_stereo;
1891 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1893 FLAC__ASSERT(0 != encoder);
1894 FLAC__ASSERT(0 != encoder->private_);
1895 FLAC__ASSERT(0 != encoder->protected_);
1896 return encoder->protected_->loose_mid_side_stereo;
1899 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1901 FLAC__ASSERT(0 != encoder);
1902 FLAC__ASSERT(0 != encoder->private_);
1903 FLAC__ASSERT(0 != encoder->protected_);
1904 return encoder->protected_->max_lpc_order;
1907 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1909 FLAC__ASSERT(0 != encoder);
1910 FLAC__ASSERT(0 != encoder->private_);
1911 FLAC__ASSERT(0 != encoder->protected_);
1912 return encoder->protected_->qlp_coeff_precision;
1915 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1917 FLAC__ASSERT(0 != encoder);
1918 FLAC__ASSERT(0 != encoder->private_);
1919 FLAC__ASSERT(0 != encoder->protected_);
1920 return encoder->protected_->do_qlp_coeff_prec_search;
1923 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1925 FLAC__ASSERT(0 != encoder);
1926 FLAC__ASSERT(0 != encoder->private_);
1927 FLAC__ASSERT(0 != encoder->protected_);
1928 return encoder->protected_->do_escape_coding;
1931 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1933 FLAC__ASSERT(0 != encoder);
1934 FLAC__ASSERT(0 != encoder->private_);
1935 FLAC__ASSERT(0 != encoder->protected_);
1936 return encoder->protected_->do_exhaustive_model_search;
1939 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1941 FLAC__ASSERT(0 != encoder);
1942 FLAC__ASSERT(0 != encoder->private_);
1943 FLAC__ASSERT(0 != encoder->protected_);
1944 return encoder->protected_->min_residual_partition_order;
1947 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1949 FLAC__ASSERT(0 != encoder);
1950 FLAC__ASSERT(0 != encoder->private_);
1951 FLAC__ASSERT(0 != encoder->protected_);
1952 return encoder->protected_->max_residual_partition_order;
1955 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1957 FLAC__ASSERT(0 != encoder);
1958 FLAC__ASSERT(0 != encoder->private_);
1959 FLAC__ASSERT(0 != encoder->protected_);
1960 return encoder->protected_->rice_parameter_search_dist;
1963 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1965 FLAC__ASSERT(0 != encoder);
1966 FLAC__ASSERT(0 != encoder->private_);
1967 FLAC__ASSERT(0 != encoder->protected_);
1968 return encoder->protected_->total_samples_estimate;
1971 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1973 unsigned i, j = 0, channel;
1974 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1976 FLAC__ASSERT(0 != encoder);
1977 FLAC__ASSERT(0 != encoder->private_);
1978 FLAC__ASSERT(0 != encoder->protected_);
1979 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1982 const unsigned n = min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j);
1984 if(encoder->protected_->verify)
1985 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n);
1987 for(channel = 0; channel < channels; channel++)
1988 memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n);
1990 if(encoder->protected_->do_mid_side_stereo) {
1991 FLAC__ASSERT(channels == 2);
1992 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
1993 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
1994 encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j];
1995 encoder->private_->integer_signal_mid_side[0][i] = (buffer[0][j] + buffer[1][j]) >> 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2001 encoder->private_->current_sample_number += n;
2003 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2004 if(encoder->private_->current_sample_number > blocksize) {
2005 FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_);
2006 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2007 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2009 /* move unprocessed overread samples to beginnings of arrays */
2010 for(channel = 0; channel < channels; channel++)
2011 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2012 if(encoder->protected_->do_mid_side_stereo) {
2013 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2014 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2016 encoder->private_->current_sample_number = 1;
2018 } while(j < samples);
2023 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2025 unsigned i, j, k, channel;
2026 FLAC__int32 x, mid, side;
2027 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2029 FLAC__ASSERT(0 != encoder);
2030 FLAC__ASSERT(0 != encoder->private_);
2031 FLAC__ASSERT(0 != encoder->protected_);
2032 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2036 * we have several flavors of the same basic loop, optimized for
2037 * different conditions:
2039 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2041 * stereo coding: unroll channel loop
2044 if(encoder->protected_->verify)
2045 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2047 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2048 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2049 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2051 encoder->private_->integer_signal[1][i] = x;
2054 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2055 encoder->private_->integer_signal_mid_side[1][i] = side;
2056 encoder->private_->integer_signal_mid_side[0][i] = mid;
2058 encoder->private_->current_sample_number = i;
2059 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2061 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2063 /* move unprocessed overread samples to beginnings of arrays */
2064 FLAC__ASSERT(i == blocksize+OVERREAD_);
2065 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2066 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize];
2067 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize];
2068 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2069 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2070 encoder->private_->current_sample_number = 1;
2072 } while(j < samples);
2076 * independent channel coding: buffer each channel in inner loop
2079 if(encoder->protected_->verify)
2080 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2082 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2083 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2084 for(channel = 0; channel < channels; channel++)
2085 encoder->private_->integer_signal[channel][i] = buffer[k++];
2087 encoder->private_->current_sample_number = i;
2088 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2090 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2092 /* move unprocessed overread samples to beginnings of arrays */
2093 FLAC__ASSERT(i == blocksize+OVERREAD_);
2094 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2095 for(channel = 0; channel < channels; channel++)
2096 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2097 encoder->private_->current_sample_number = 1;
2099 } while(j < samples);
2105 /***********************************************************************
2107 * Private class methods
2109 ***********************************************************************/
2111 void set_defaults_(FLAC__StreamEncoder *encoder)
2113 FLAC__ASSERT(0 != encoder);
2115 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2116 encoder->protected_->verify = true;
2118 encoder->protected_->verify = false;
2120 encoder->protected_->streamable_subset = true;
2121 encoder->protected_->do_md5 = true;
2122 encoder->protected_->do_mid_side_stereo = false;
2123 encoder->protected_->loose_mid_side_stereo = false;
2124 encoder->protected_->channels = 2;
2125 encoder->protected_->bits_per_sample = 16;
2126 encoder->protected_->sample_rate = 44100;
2127 encoder->protected_->blocksize = 0;
2128 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2129 encoder->protected_->num_apodizations = 1;
2130 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2131 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2133 encoder->protected_->max_lpc_order = 0;
2134 encoder->protected_->qlp_coeff_precision = 0;
2135 encoder->protected_->do_qlp_coeff_prec_search = false;
2136 encoder->protected_->do_exhaustive_model_search = false;
2137 encoder->protected_->do_escape_coding = false;
2138 encoder->protected_->min_residual_partition_order = 0;
2139 encoder->protected_->max_residual_partition_order = 0;
2140 encoder->protected_->rice_parameter_search_dist = 0;
2141 encoder->protected_->total_samples_estimate = 0;
2142 encoder->protected_->metadata = 0;
2143 encoder->protected_->num_metadata_blocks = 0;
2145 encoder->private_->seek_table = 0;
2146 encoder->private_->disable_constant_subframes = false;
2147 encoder->private_->disable_fixed_subframes = false;
2148 encoder->private_->disable_verbatim_subframes = false;
2150 encoder->private_->is_ogg = false;
2152 encoder->private_->read_callback = 0;
2153 encoder->private_->write_callback = 0;
2154 encoder->private_->seek_callback = 0;
2155 encoder->private_->tell_callback = 0;
2156 encoder->private_->metadata_callback = 0;
2157 encoder->private_->progress_callback = 0;
2158 encoder->private_->client_data = 0;
2161 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2165 void free_(FLAC__StreamEncoder *encoder)
2167 unsigned i, channel;
2169 FLAC__ASSERT(0 != encoder);
2170 if(encoder->protected_->metadata) {
2171 free(encoder->protected_->metadata);
2172 encoder->protected_->metadata = 0;
2173 encoder->protected_->num_metadata_blocks = 0;
2175 for(i = 0; i < encoder->protected_->channels; i++) {
2176 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2177 free(encoder->private_->integer_signal_unaligned[i]);
2178 encoder->private_->integer_signal_unaligned[i] = 0;
2180 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2181 if(0 != encoder->private_->real_signal_unaligned[i]) {
2182 free(encoder->private_->real_signal_unaligned[i]);
2183 encoder->private_->real_signal_unaligned[i] = 0;
2187 for(i = 0; i < 2; i++) {
2188 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2189 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2190 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2192 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2193 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2194 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2195 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2199 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2200 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2201 if(0 != encoder->private_->window_unaligned[i]) {
2202 free(encoder->private_->window_unaligned[i]);
2203 encoder->private_->window_unaligned[i] = 0;
2206 if(0 != encoder->private_->windowed_signal_unaligned) {
2207 free(encoder->private_->windowed_signal_unaligned);
2208 encoder->private_->windowed_signal_unaligned = 0;
2211 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2212 for(i = 0; i < 2; i++) {
2213 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2214 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2215 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2219 for(channel = 0; channel < 2; channel++) {
2220 for(i = 0; i < 2; i++) {
2221 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2222 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2223 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2227 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2228 free(encoder->private_->abs_residual_partition_sums_unaligned);
2229 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2231 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2232 free(encoder->private_->raw_bits_per_partition_unaligned);
2233 encoder->private_->raw_bits_per_partition_unaligned = 0;
2235 if(encoder->protected_->verify) {
2236 for(i = 0; i < encoder->protected_->channels; i++) {
2237 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2238 free(encoder->private_->verify.input_fifo.data[i]);
2239 encoder->private_->verify.input_fifo.data[i] = 0;
2243 FLAC__bitwriter_free(encoder->private_->frame);
2246 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2249 unsigned i, channel;
2251 FLAC__ASSERT(new_blocksize > 0);
2252 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2253 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2255 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2256 if(new_blocksize <= encoder->private_->input_capacity)
2261 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2262 * requires that the input arrays (in our case the integer signals)
2263 * have a buffer of up to 3 zeroes in front (at negative indices) for
2264 * alignment purposes; we use 4 in front to keep the data well-aligned.
2267 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2268 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2269 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2270 encoder->private_->integer_signal[i] += 4;
2271 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2272 #if 0 /* @@@ currently unused */
2273 if(encoder->protected_->max_lpc_order > 0)
2274 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2278 for(i = 0; ok && i < 2; i++) {
2279 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]);
2280 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2281 encoder->private_->integer_signal_mid_side[i] += 4;
2282 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2283 #if 0 /* @@@ currently unused */
2284 if(encoder->protected_->max_lpc_order > 0)
2285 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]);
2289 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2290 if(ok && encoder->protected_->max_lpc_order > 0) {
2291 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2292 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2293 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2296 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2297 for(i = 0; ok && i < 2; i++) {
2298 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2301 for(channel = 0; ok && channel < 2; channel++) {
2302 for(i = 0; ok && i < 2; i++) {
2303 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]);
2306 /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */
2307 /*@@@ new_blocksize*2 is too pessimistic, but to fix, we need smarter logic because a smaller new_blocksize can actually increase the # of partitions; would require moving this out into a separate function, then checking its capacity against the need of the current blocksize&min/max_partition_order (and maybe predictor order) */
2308 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2309 if(encoder->protected_->do_escape_coding)
2310 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2312 /* now adjust the windows if the blocksize has changed */
2313 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2314 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2315 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2316 switch(encoder->protected_->apodizations[i].type) {
2317 case FLAC__APODIZATION_BARTLETT:
2318 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2320 case FLAC__APODIZATION_BARTLETT_HANN:
2321 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2323 case FLAC__APODIZATION_BLACKMAN:
2324 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2326 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2327 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2329 case FLAC__APODIZATION_CONNES:
2330 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2332 case FLAC__APODIZATION_FLATTOP:
2333 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2335 case FLAC__APODIZATION_GAUSS:
2336 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2338 case FLAC__APODIZATION_HAMMING:
2339 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2341 case FLAC__APODIZATION_HANN:
2342 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2344 case FLAC__APODIZATION_KAISER_BESSEL:
2345 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2347 case FLAC__APODIZATION_NUTTALL:
2348 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2350 case FLAC__APODIZATION_RECTANGLE:
2351 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2353 case FLAC__APODIZATION_TRIANGLE:
2354 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2356 case FLAC__APODIZATION_TUKEY:
2357 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2359 case FLAC__APODIZATION_WELCH:
2360 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2364 /* double protection */
2365 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2373 encoder->private_->input_capacity = new_blocksize;
2375 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2380 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2382 const FLAC__byte *buffer;
2385 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2387 if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
2388 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2392 if(encoder->protected_->verify) {
2393 encoder->private_->verify.output.data = buffer;
2394 encoder->private_->verify.output.bytes = bytes;
2395 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2396 encoder->private_->verify.needs_magic_hack = true;
2399 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2400 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2401 FLAC__bitwriter_clear(encoder->private_->frame);
2402 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2403 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2409 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2410 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2411 FLAC__bitwriter_clear(encoder->private_->frame);
2412 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2416 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2417 FLAC__bitwriter_clear(encoder->private_->frame);
2420 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2421 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2427 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2429 FLAC__StreamEncoderWriteStatus status;
2430 FLAC__uint64 output_position = 0;
2432 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2433 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2434 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2435 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2439 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2442 FLAC__MetadataType type = (buffer[0] & 0x7f);
2443 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2444 encoder->protected_->streaminfo_offset = output_position;
2445 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2446 encoder->protected_->seektable_offset = output_position;
2450 * Mark the current seek point if hit (if audio_offset == 0 that
2451 * means we're still writing metadata and haven't hit the first
2454 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2455 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2456 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2457 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2458 FLAC__uint64 test_sample;
2460 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2461 test_sample = encoder->private_->seek_table->points[i].sample_number;
2462 if(test_sample > frame_last_sample) {
2465 else if(test_sample >= frame_first_sample) {
2466 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2467 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2468 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2469 encoder->private_->first_seekpoint_to_check++;
2470 /* DO NOT: "break;" and here's why:
2471 * The seektable template may contain more than one target
2472 * sample for any given frame; we will keep looping, generating
2473 * duplicate seekpoints for them, and we'll clean it up later,
2474 * just before writing the seektable back to the metadata.
2478 encoder->private_->first_seekpoint_to_check++;
2484 if(encoder->private_->is_ogg) {
2485 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2486 &encoder->protected_->ogg_encoder_aspect,
2490 encoder->private_->current_frame_number,
2492 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2494 encoder->private_->client_data
2499 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2501 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2502 encoder->private_->bytes_written += bytes;
2503 encoder->private_->samples_written += samples;
2504 /* we keep a high watermark on the number of frames written because
2505 * when the encoder goes back to write metadata, 'current_frame'
2506 * will drop back to 0.
2508 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2511 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2516 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2517 void update_metadata_(const FLAC__StreamEncoder *encoder)
2519 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2520 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2521 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2522 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2523 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2524 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2525 FLAC__StreamEncoderSeekStatus seek_status;
2527 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2529 /* All this is based on intimate knowledge of the stream header
2530 * layout, but a change to the header format that would break this
2531 * would also break all streams encoded in the previous format.
2535 * Write MD5 signature
2538 const unsigned md5_offset =
2539 FLAC__STREAM_METADATA_HEADER_LENGTH +
2541 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2542 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2543 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2544 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2545 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2546 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2547 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2548 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2551 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2552 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2553 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2556 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2557 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2563 * Write total samples
2566 const unsigned total_samples_byte_offset =
2567 FLAC__STREAM_METADATA_HEADER_LENGTH +
2569 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2570 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2571 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2572 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2573 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2574 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2575 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2579 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2580 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2581 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2582 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2583 b[4] = (FLAC__byte)(samples & 0xFF);
2584 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) {
2585 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2586 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2589 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2590 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2596 * Write min/max framesize
2599 const unsigned min_framesize_offset =
2600 FLAC__STREAM_METADATA_HEADER_LENGTH +
2602 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2603 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2606 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2607 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2608 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2609 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2610 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2611 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2612 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) {
2613 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2614 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2617 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2618 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2626 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2629 FLAC__format_seektable_sort(encoder->private_->seek_table);
2631 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2633 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) {
2634 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2635 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2639 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2642 xx = encoder->private_->seek_table->points[i].sample_number;
2643 b[7] = (FLAC__byte)xx; xx >>= 8;
2644 b[6] = (FLAC__byte)xx; xx >>= 8;
2645 b[5] = (FLAC__byte)xx; xx >>= 8;
2646 b[4] = (FLAC__byte)xx; xx >>= 8;
2647 b[3] = (FLAC__byte)xx; xx >>= 8;
2648 b[2] = (FLAC__byte)xx; xx >>= 8;
2649 b[1] = (FLAC__byte)xx; xx >>= 8;
2650 b[0] = (FLAC__byte)xx; xx >>= 8;
2651 xx = encoder->private_->seek_table->points[i].stream_offset;
2652 b[15] = (FLAC__byte)xx; xx >>= 8;
2653 b[14] = (FLAC__byte)xx; xx >>= 8;
2654 b[13] = (FLAC__byte)xx; xx >>= 8;
2655 b[12] = (FLAC__byte)xx; xx >>= 8;
2656 b[11] = (FLAC__byte)xx; xx >>= 8;
2657 b[10] = (FLAC__byte)xx; xx >>= 8;
2658 b[9] = (FLAC__byte)xx; xx >>= 8;
2659 b[8] = (FLAC__byte)xx; xx >>= 8;
2660 x = encoder->private_->seek_table->points[i].frame_samples;
2661 b[17] = (FLAC__byte)x; x >>= 8;
2662 b[16] = (FLAC__byte)x; x >>= 8;
2663 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2664 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2672 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2673 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2675 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2676 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2677 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2678 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2679 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2680 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2681 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2682 FLAC__STREAM_SYNC_LENGTH
2684 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2685 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2686 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2687 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2688 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2691 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2692 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2694 /* Pre-check that client supports seeking, since we don't want the
2695 * ogg_helper code to ever have to deal with this condition.
2697 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2700 /* All this is based on intimate knowledge of the stream header
2701 * layout, but a change to the header format that would break this
2702 * would also break all streams encoded in the previous format.
2706 ** Write STREAMINFO stats
2708 simple_ogg_page__init(&page);
2709 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2710 simple_ogg_page__clear(&page);
2711 return; /* state already set */
2715 * Write MD5 signature
2718 const unsigned md5_offset =
2719 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2720 FLAC__STREAM_METADATA_HEADER_LENGTH +
2722 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2723 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2724 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2725 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2726 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2727 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2728 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2729 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2732 if(md5_offset + 16 > (unsigned)page.body_len) {
2733 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2734 simple_ogg_page__clear(&page);
2737 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2741 * Write total samples
2744 const unsigned total_samples_byte_offset =
2745 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2746 FLAC__STREAM_METADATA_HEADER_LENGTH +
2748 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2749 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2750 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2751 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2752 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2753 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2754 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2758 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2759 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2760 simple_ogg_page__clear(&page);
2763 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2764 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2765 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2766 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2767 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2768 b[4] = (FLAC__byte)(samples & 0xFF);
2769 memcpy(page.body + total_samples_byte_offset, b, 5);
2773 * Write min/max framesize
2776 const unsigned min_framesize_offset =
2777 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2778 FLAC__STREAM_METADATA_HEADER_LENGTH +
2780 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2781 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2784 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
2785 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2786 simple_ogg_page__clear(&page);
2789 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2790 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2791 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2792 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2793 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2794 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2795 memcpy(page.body + min_framesize_offset, b, 6);
2797 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2798 simple_ogg_page__clear(&page);
2799 return; /* state already set */
2801 simple_ogg_page__clear(&page);
2806 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2810 FLAC__format_seektable_sort(encoder->private_->seek_table);
2812 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2814 simple_ogg_page__init(&page);
2815 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2816 simple_ogg_page__clear(&page);
2817 return; /* state already set */
2820 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
2821 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2822 simple_ogg_page__clear(&page);
2826 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
2829 xx = encoder->private_->seek_table->points[i].sample_number;
2830 b[7] = (FLAC__byte)xx; xx >>= 8;
2831 b[6] = (FLAC__byte)xx; xx >>= 8;
2832 b[5] = (FLAC__byte)xx; xx >>= 8;
2833 b[4] = (FLAC__byte)xx; xx >>= 8;
2834 b[3] = (FLAC__byte)xx; xx >>= 8;
2835 b[2] = (FLAC__byte)xx; xx >>= 8;
2836 b[1] = (FLAC__byte)xx; xx >>= 8;
2837 b[0] = (FLAC__byte)xx; xx >>= 8;
2838 xx = encoder->private_->seek_table->points[i].stream_offset;
2839 b[15] = (FLAC__byte)xx; xx >>= 8;
2840 b[14] = (FLAC__byte)xx; xx >>= 8;
2841 b[13] = (FLAC__byte)xx; xx >>= 8;
2842 b[12] = (FLAC__byte)xx; xx >>= 8;
2843 b[11] = (FLAC__byte)xx; xx >>= 8;
2844 b[10] = (FLAC__byte)xx; xx >>= 8;
2845 b[9] = (FLAC__byte)xx; xx >>= 8;
2846 b[8] = (FLAC__byte)xx; xx >>= 8;
2847 x = encoder->private_->seek_table->points[i].frame_samples;
2848 b[17] = (FLAC__byte)x; x >>= 8;
2849 b[16] = (FLAC__byte)x; x >>= 8;
2853 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2854 simple_ogg_page__clear(&page);
2855 return; /* state already set */
2857 simple_ogg_page__clear(&page);
2862 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
2865 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2868 * Accumulate raw signal to the MD5 signature
2870 if(encoder->protected_->do_md5 && !FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) {
2871 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2876 * Process the frame header and subframes into the frame bitbuffer
2878 if(!process_subframes_(encoder, is_fractional_block)) {
2879 /* the above function sets the state for us in case of an error */
2884 * Zero-pad the frame to a byte_boundary
2886 if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
2887 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2892 * CRC-16 the whole thing
2894 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2896 !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
2897 !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
2899 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2906 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
2907 /* the above function sets the state for us in case of an error */
2912 * Get ready for the next frame
2914 encoder->private_->current_sample_number = 0;
2915 encoder->private_->current_frame_number++;
2916 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
2921 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
2923 FLAC__FrameHeader frame_header;
2924 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
2925 FLAC__bool do_independent, do_mid_side;
2928 * Calculate the min,max Rice partition orders
2930 if(is_fractional_block) {
2931 max_partition_order = 0;
2934 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
2935 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
2937 min_partition_order = min(min_partition_order, max_partition_order);
2942 frame_header.blocksize = encoder->protected_->blocksize;
2943 frame_header.sample_rate = encoder->protected_->sample_rate;
2944 frame_header.channels = encoder->protected_->channels;
2945 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
2946 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
2947 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
2948 frame_header.number.frame_number = encoder->private_->current_frame_number;
2951 * Figure out what channel assignments to try
2953 if(encoder->protected_->do_mid_side_stereo) {
2954 if(encoder->protected_->loose_mid_side_stereo) {
2955 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
2956 do_independent = true;
2960 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
2961 do_mid_side = !do_independent;
2965 do_independent = true;
2970 do_independent = true;
2971 do_mid_side = false;
2974 FLAC__ASSERT(do_independent || do_mid_side);
2977 * Check for wasted bits; set effective bps for each subframe
2979 if(do_independent) {
2980 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2981 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
2982 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
2983 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
2987 FLAC__ASSERT(encoder->protected_->channels == 2);
2988 for(channel = 0; channel < 2; channel++) {
2989 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
2990 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
2991 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
2996 * First do a normal encoding pass of each independent channel
2998 if(do_independent) {
2999 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3003 min_partition_order,
3004 max_partition_order,
3006 encoder->private_->subframe_bps[channel],
3007 encoder->private_->integer_signal[channel],
3008 encoder->private_->subframe_workspace_ptr[channel],
3009 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
3010 encoder->private_->residual_workspace[channel],
3011 encoder->private_->best_subframe+channel,
3012 encoder->private_->best_subframe_bits+channel
3020 * Now do mid and side channels if requested
3023 FLAC__ASSERT(encoder->protected_->channels == 2);
3025 for(channel = 0; channel < 2; channel++) {
3029 min_partition_order,
3030 max_partition_order,
3032 encoder->private_->subframe_bps_mid_side[channel],
3033 encoder->private_->integer_signal_mid_side[channel],
3034 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3035 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3036 encoder->private_->residual_workspace_mid_side[channel],
3037 encoder->private_->best_subframe_mid_side+channel,
3038 encoder->private_->best_subframe_bits_mid_side+channel
3046 * Compose the frame bitbuffer
3049 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3050 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3051 FLAC__ChannelAssignment channel_assignment;
3053 FLAC__ASSERT(encoder->protected_->channels == 2);
3055 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3056 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3059 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3063 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
3064 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
3065 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
3066 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
3067 FLAC__ASSERT(do_independent && do_mid_side);
3069 /* We have to figure out which channel assignent results in the smallest frame */
3070 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3071 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3072 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3073 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3075 channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
3076 min_bits = bits[channel_assignment];
3077 for(ca = 1; ca <= 3; ca++) {
3078 if(bits[ca] < min_bits) {
3079 min_bits = bits[ca];
3080 channel_assignment = (FLAC__ChannelAssignment)ca;
3085 frame_header.channel_assignment = channel_assignment;
3087 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3088 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3092 switch(channel_assignment) {
3093 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3094 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3095 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3097 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3098 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3099 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3101 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3102 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3103 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3105 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3106 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3107 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3113 switch(channel_assignment) {
3114 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3115 left_bps = encoder->private_->subframe_bps [0];
3116 right_bps = encoder->private_->subframe_bps [1];
3118 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3119 left_bps = encoder->private_->subframe_bps [0];
3120 right_bps = encoder->private_->subframe_bps_mid_side[1];
3122 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3123 left_bps = encoder->private_->subframe_bps_mid_side[1];
3124 right_bps = encoder->private_->subframe_bps [1];
3126 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3127 left_bps = encoder->private_->subframe_bps_mid_side[0];
3128 right_bps = encoder->private_->subframe_bps_mid_side[1];
3134 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3135 if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
3137 if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
3141 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3142 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3146 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3147 if(!add_subframe_(encoder, frame_header.blocksize, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) {
3148 /* the above function sets the state for us in case of an error */
3154 if(encoder->protected_->loose_mid_side_stereo) {
3155 encoder->private_->loose_mid_side_stereo_frame_count++;
3156 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3157 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3160 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3165 FLAC__bool process_subframe_(
3166 FLAC__StreamEncoder *encoder,
3167 unsigned min_partition_order,
3168 unsigned max_partition_order,
3169 const FLAC__FrameHeader *frame_header,
3170 unsigned subframe_bps,
3171 const FLAC__int32 integer_signal[],
3172 FLAC__Subframe *subframe[2],
3173 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3174 FLAC__int32 *residual[2],
3175 unsigned *best_subframe,
3179 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3180 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3182 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3184 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3185 FLAC__double lpc_residual_bits_per_sample;
3186 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 */
3187 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3188 unsigned min_lpc_order, max_lpc_order, lpc_order;
3189 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3191 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3192 unsigned rice_parameter;
3193 unsigned _candidate_bits, _best_bits;
3194 unsigned _best_subframe;
3196 FLAC__ASSERT(frame_header->blocksize > 0);
3198 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3200 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3201 _best_bits = UINT_MAX;
3203 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3205 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3206 unsigned signal_is_constant = false;
3207 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);
3208 /* check for constant subframe */
3210 !encoder->private_->disable_constant_subframes &&
3211 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3212 fixed_residual_bits_per_sample[1] == 0.0
3214 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3217 /* the above means it's possible all samples are the same value; now double-check it: */
3219 signal_is_constant = true;
3220 for(i = 1; i < frame_header->blocksize; i++) {
3221 if(integer_signal[0] != integer_signal[i]) {
3222 signal_is_constant = false;
3227 if(signal_is_constant) {
3228 _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
3229 if(_candidate_bits < _best_bits) {
3230 _best_subframe = !_best_subframe;
3231 _best_bits = _candidate_bits;
3235 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3237 if(encoder->protected_->do_exhaustive_model_search) {
3238 min_fixed_order = 0;
3239 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3242 min_fixed_order = max_fixed_order = guess_fixed_order;
3244 if(max_fixed_order >= frame_header->blocksize)
3245 max_fixed_order = frame_header->blocksize - 1;
3246 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3247 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3248 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3249 continue; /* don't even try */
3250 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 */
3252 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3253 continue; /* don't even try */
3254 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 */
3256 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3257 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3258 #ifdef DEBUG_VERBOSE
3259 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3261 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3264 evaluate_fixed_subframe_(
3267 residual[!_best_subframe],
3268 encoder->private_->abs_residual_partition_sums,
3269 encoder->private_->raw_bits_per_partition,
3270 frame_header->blocksize,
3274 min_partition_order,
3275 max_partition_order,
3276 encoder->protected_->do_escape_coding,
3277 encoder->protected_->rice_parameter_search_dist,
3278 subframe[!_best_subframe],
3279 partitioned_rice_contents[!_best_subframe]
3281 if(_candidate_bits < _best_bits) {
3282 _best_subframe = !_best_subframe;
3283 _best_bits = _candidate_bits;
3288 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3290 if(encoder->protected_->max_lpc_order > 0) {
3291 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3292 max_lpc_order = frame_header->blocksize-1;
3294 max_lpc_order = encoder->protected_->max_lpc_order;
3295 if(max_lpc_order > 0) {
3297 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3298 FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3299 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3300 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3301 if(autoc[0] != 0.0) {
3302 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3303 if(encoder->protected_->do_exhaustive_model_search) {
3307 const unsigned guess_lpc_order =
3308 FLAC__lpc_compute_best_order(
3311 frame_header->blocksize,
3313 encoder->protected_->do_qlp_coeff_prec_search?
3314 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3315 encoder->protected_->qlp_coeff_precision
3318 min_lpc_order = max_lpc_order = guess_lpc_order;
3320 if(max_lpc_order >= frame_header->blocksize)
3321 max_lpc_order = frame_header->blocksize - 1;
3322 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3323 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3324 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3325 continue; /* don't even try */
3326 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3327 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3328 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3329 #ifdef DEBUG_VERBOSE
3330 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3332 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3334 if(encoder->protected_->do_qlp_coeff_prec_search) {
3335 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3336 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3337 if(subframe_bps <= 17) {
3338 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3339 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3342 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3345 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3347 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3349 evaluate_lpc_subframe_(
3352 residual[!_best_subframe],
3353 encoder->private_->abs_residual_partition_sums,
3354 encoder->private_->raw_bits_per_partition,
3355 encoder->private_->lp_coeff[lpc_order-1],
3356 frame_header->blocksize,
3359 qlp_coeff_precision,
3361 min_partition_order,
3362 max_partition_order,
3363 encoder->protected_->do_escape_coding,
3364 encoder->protected_->rice_parameter_search_dist,
3365 subframe[!_best_subframe],
3366 partitioned_rice_contents[!_best_subframe]
3368 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3369 if(_candidate_bits < _best_bits) {
3370 _best_subframe = !_best_subframe;
3371 _best_bits = _candidate_bits;
3380 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3384 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3385 if(_best_bits == UINT_MAX) {
3386 FLAC__ASSERT(_best_subframe == 0);
3387 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3390 *best_subframe = _best_subframe;
3391 *best_bits = _best_bits;
3396 FLAC__bool add_subframe_(
3397 FLAC__StreamEncoder *encoder,
3399 unsigned subframe_bps,
3400 const FLAC__Subframe *subframe,
3401 FLAC__BitWriter *frame
3404 switch(subframe->type) {
3405 case FLAC__SUBFRAME_TYPE_CONSTANT:
3406 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3407 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3411 case FLAC__SUBFRAME_TYPE_FIXED:
3412 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3413 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3417 case FLAC__SUBFRAME_TYPE_LPC:
3418 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3419 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3423 case FLAC__SUBFRAME_TYPE_VERBATIM:
3424 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3425 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3436 #define SPOTCHECK_ESTIMATE 0
3437 #if SPOTCHECK_ESTIMATE
3438 static void spotcheck_subframe_estimate_(
3439 FLAC__StreamEncoder *encoder,
3441 unsigned subframe_bps,
3442 const FLAC__Subframe *subframe,
3447 FLAC__BitWriter *frame = FLAC__bitwriter_new();
3449 fprintf(stderr, "EST: can't allocate frame\n");
3452 if(!FLAC__bitwriter_init(frame)) {
3453 fprintf(stderr, "EST: can't init frame\n");
3456 ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
3459 const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
3460 if(estimate != actual)
3461 fprintf(stderr, "EST: bad, frame#%u sub#%%d type=%8s est=%u, actual=%u, delta=%d\n", encoder->private_->current_frame_number, FLAC__SubframeTypeString[subframe->type], estimate, actual, (int)actual-(int)estimate);
3463 FLAC__bitwriter_delete(frame);
3467 unsigned evaluate_constant_subframe_(
3468 FLAC__StreamEncoder *encoder,
3469 const FLAC__int32 signal,
3471 unsigned subframe_bps,
3472 FLAC__Subframe *subframe
3476 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3477 subframe->data.constant.value = signal;
3479 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
3481 #if SPOTCHECK_ESTIMATE
3482 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3484 (void)encoder, (void)blocksize;
3490 unsigned evaluate_fixed_subframe_(
3491 FLAC__StreamEncoder *encoder,
3492 const FLAC__int32 signal[],
3493 FLAC__int32 residual[],
3494 FLAC__uint64 abs_residual_partition_sums[],
3495 unsigned raw_bits_per_partition[],
3497 unsigned subframe_bps,
3499 unsigned rice_parameter,
3500 unsigned min_partition_order,
3501 unsigned max_partition_order,
3502 FLAC__bool do_escape_coding,
3503 unsigned rice_parameter_search_dist,
3504 FLAC__Subframe *subframe,
3505 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3508 unsigned i, residual_bits, estimate;
3509 const unsigned residual_samples = blocksize - order;
3511 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3513 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3515 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3516 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3517 subframe->data.fixed.residual = residual;
3520 find_best_partition_order_(
3523 abs_residual_partition_sums,
3524 raw_bits_per_partition,
3528 min_partition_order,
3529 max_partition_order,
3532 rice_parameter_search_dist,
3533 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3536 subframe->data.fixed.order = order;
3537 for(i = 0; i < order; i++)
3538 subframe->data.fixed.warmup[i] = signal[i];
3540 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
3542 #if SPOTCHECK_ESTIMATE
3543 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3549 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3550 unsigned evaluate_lpc_subframe_(
3551 FLAC__StreamEncoder *encoder,
3552 const FLAC__int32 signal[],
3553 FLAC__int32 residual[],
3554 FLAC__uint64 abs_residual_partition_sums[],
3555 unsigned raw_bits_per_partition[],
3556 const FLAC__real lp_coeff[],
3558 unsigned subframe_bps,
3560 unsigned qlp_coeff_precision,
3561 unsigned rice_parameter,
3562 unsigned min_partition_order,
3563 unsigned max_partition_order,
3564 FLAC__bool do_escape_coding,
3565 unsigned rice_parameter_search_dist,
3566 FLAC__Subframe *subframe,
3567 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3570 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3571 unsigned i, residual_bits, estimate;
3572 int quantization, ret;
3573 const unsigned residual_samples = blocksize - order;
3575 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3576 if(subframe_bps <= 16) {
3577 FLAC__ASSERT(order > 0);
3578 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3579 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3582 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3584 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3586 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3587 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3588 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3590 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3592 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3594 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3596 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3597 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3598 subframe->data.lpc.residual = residual;
3601 find_best_partition_order_(
3604 abs_residual_partition_sums,
3605 raw_bits_per_partition,
3609 min_partition_order,
3610 max_partition_order,
3613 rice_parameter_search_dist,
3614 &subframe->data.lpc.entropy_coding_method.data.partitioned_rice
3617 subframe->data.lpc.order = order;
3618 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3619 subframe->data.lpc.quantization_level = quantization;
3620 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3621 for(i = 0; i < order; i++)
3622 subframe->data.lpc.warmup[i] = signal[i];
3624 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits;
3626 #if SPOTCHECK_ESTIMATE
3627 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3634 unsigned evaluate_verbatim_subframe_(
3635 FLAC__StreamEncoder *encoder,
3636 const FLAC__int32 signal[],
3638 unsigned subframe_bps,
3639 FLAC__Subframe *subframe
3644 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3646 subframe->data.verbatim.data = signal;
3648 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
3650 #if SPOTCHECK_ESTIMATE
3651 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3659 unsigned find_best_partition_order_(
3660 FLAC__StreamEncoderPrivate *private_,
3661 const FLAC__int32 residual[],
3662 FLAC__uint64 abs_residual_partition_sums[],
3663 unsigned raw_bits_per_partition[],
3664 unsigned residual_samples,
3665 unsigned predictor_order,
3666 unsigned rice_parameter,
3667 unsigned min_partition_order,
3668 unsigned max_partition_order,
3670 FLAC__bool do_escape_coding,
3671 unsigned rice_parameter_search_dist,
3672 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
3675 unsigned residual_bits, best_residual_bits = 0;
3676 unsigned best_parameters_index = 0;
3677 const unsigned blocksize = residual_samples + predictor_order;
3679 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3680 min_partition_order = min(min_partition_order, max_partition_order);
3682 precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps);
3684 if(do_escape_coding)
3685 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3688 int partition_order;
3691 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3693 set_partitioned_rice_(
3694 #ifdef EXACT_RICE_BITS_CALCULATION
3697 abs_residual_partition_sums+sum,
3698 raw_bits_per_partition+sum,
3702 rice_parameter_search_dist,
3703 (unsigned)partition_order,
3705 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3710 FLAC__ASSERT(best_residual_bits != 0);
3713 sum += 1u << partition_order;
3714 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3715 best_residual_bits = residual_bits;
3716 best_parameters_index = !best_parameters_index;
3717 best_partitioned_rice->order = partition_order;
3723 * We are allowed to de-const the pointer based on our special knowledge;
3724 * it is const to the outside world.
3727 FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents;
3728 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order));
3729 memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3730 memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3733 return best_residual_bits;
3736 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3737 extern void precompute_partition_info_sums_32bit_asm_ia32_(
3738 const FLAC__int32 residual[],
3739 FLAC__uint64 abs_residual_partition_sums[],
3741 unsigned predictor_order,
3742 unsigned min_partition_order,
3743 unsigned max_partition_order
3747 void precompute_partition_info_sums_(
3748 const FLAC__int32 residual[],
3749 FLAC__uint64 abs_residual_partition_sums[],
3750 unsigned residual_samples,
3751 unsigned predictor_order,
3752 unsigned min_partition_order,
3753 unsigned max_partition_order,
3757 const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order;
3758 unsigned partitions = 1u << max_partition_order;
3760 FLAC__ASSERT(default_partition_samples > predictor_order);
3762 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3763 /* slightly pessimistic but still catches all common cases */
3764 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3765 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3766 precompute_partition_info_sums_32bit_asm_ia32_(residual, abs_residual_partition_sums, residual_samples + predictor_order, predictor_order, min_partition_order, max_partition_order);
3771 /* first do max_partition_order */
3773 unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order);
3774 /* slightly pessimistic but still catches all common cases */
3775 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3776 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3777 FLAC__uint32 abs_residual_partition_sum;
3779 for(partition = residual_sample = 0; partition < partitions; partition++) {
3780 end += default_partition_samples;
3781 abs_residual_partition_sum = 0;
3782 for( ; residual_sample < end; residual_sample++)
3783 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3784 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3787 else { /* have to pessimistically use 64 bits for accumulator */
3788 FLAC__uint64 abs_residual_partition_sum;
3790 for(partition = residual_sample = 0; partition < partitions; partition++) {
3791 end += default_partition_samples;
3792 abs_residual_partition_sum = 0;
3793 for( ; residual_sample < end; residual_sample++)
3794 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3795 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3800 /* now merge partitions for lower orders */
3802 unsigned from_partition = 0, to_partition = partitions;
3803 int partition_order;
3804 for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) {
3807 for(i = 0; i < partitions; i++) {
3808 abs_residual_partition_sums[to_partition++] =
3809 abs_residual_partition_sums[from_partition ] +
3810 abs_residual_partition_sums[from_partition+1];
3811 from_partition += 2;
3817 void precompute_partition_info_escapes_(
3818 const FLAC__int32 residual[],
3819 unsigned raw_bits_per_partition[],
3820 unsigned residual_samples,
3821 unsigned predictor_order,
3822 unsigned min_partition_order,
3823 unsigned max_partition_order
3826 int partition_order;
3827 unsigned from_partition, to_partition = 0;
3828 const unsigned blocksize = residual_samples + predictor_order;
3830 /* first do max_partition_order */
3831 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3834 unsigned partition, partition_sample, partition_samples, residual_sample;
3835 const unsigned partitions = 1u << partition_order;
3836 const unsigned default_partition_samples = blocksize >> partition_order;
3838 FLAC__ASSERT(default_partition_samples > predictor_order);
3840 for(partition = residual_sample = 0; partition < partitions; partition++) {
3841 partition_samples = default_partition_samples;
3843 partition_samples -= predictor_order;
3845 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3846 r = residual[residual_sample++];
3847 /* OPT: maybe faster: rmax |= r ^ (r>>31) */
3853 /* now we know all residual values are in the range [-rmax-1,rmax] */
3854 raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1;
3856 to_partition = partitions;
3857 break; /*@@@ yuck, should remove the 'for' loop instead */
3860 /* now merge partitions for lower orders */
3861 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3864 const unsigned partitions = 1u << partition_order;
3865 for(i = 0; i < partitions; i++) {
3866 m = raw_bits_per_partition[from_partition];
3868 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
3875 #ifdef EXACT_RICE_BITS_CALCULATION
3876 static FLaC__INLINE unsigned count_rice_bits_in_partition_(
3877 const unsigned rice_parameter,
3878 const unsigned partition_samples,
3879 const FLAC__int32 *residual
3882 unsigned i, partition_bits =
3883 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
3884 (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
3886 for(i = 0; i < partition_samples; i++)
3887 partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
3888 return partition_bits;
3891 static FLaC__INLINE unsigned count_rice_bits_in_partition_(
3892 const unsigned rice_parameter,
3893 const unsigned partition_samples,
3894 const FLAC__uint64 abs_residual_partition_sum
3898 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
3899 (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
3902 (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
3903 : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
3905 - (partition_samples >> 1)
3906 /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
3907 * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1)
3908 * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
3909 * So the subtraction term tries to guess how many extra bits were contributed.
3910 * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
3916 FLAC__bool set_partitioned_rice_(
3917 #ifdef EXACT_RICE_BITS_CALCULATION
3918 const FLAC__int32 residual[],
3920 const FLAC__uint64 abs_residual_partition_sums[],
3921 const unsigned raw_bits_per_partition[],
3922 const unsigned residual_samples,
3923 const unsigned predictor_order,
3924 const unsigned suggested_rice_parameter,
3925 const unsigned rice_parameter_search_dist,
3926 const unsigned partition_order,
3927 const FLAC__bool search_for_escapes,
3928 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3932 unsigned rice_parameter, partition_bits;
3933 unsigned best_partition_bits, best_rice_parameter = 0;
3934 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3935 unsigned *parameters, *raw_bits;
3936 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3937 unsigned min_rice_parameter, max_rice_parameter;
3939 (void)rice_parameter_search_dist;
3942 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
3944 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
3945 parameters = partitioned_rice_contents->parameters;
3946 raw_bits = partitioned_rice_contents->raw_bits;
3948 if(partition_order == 0) {
3949 best_partition_bits = (unsigned)(-1);
3950 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3951 if(rice_parameter_search_dist) {
3952 if(suggested_rice_parameter < rice_parameter_search_dist)
3953 min_rice_parameter = 0;
3955 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
3956 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
3957 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3958 #ifdef DEBUG_VERBOSE
3959 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3961 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3965 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
3967 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3969 rice_parameter = suggested_rice_parameter;
3971 #ifdef EXACT_RICE_BITS_CALCULATION
3972 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual);
3974 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]);
3976 if(partition_bits < best_partition_bits) {
3977 best_rice_parameter = rice_parameter;
3978 best_partition_bits = partition_bits;
3980 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3983 if(search_for_escapes) {
3984 partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
3985 if(partition_bits <= best_partition_bits) {
3986 raw_bits[0] = raw_bits_per_partition[0];
3987 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
3988 best_partition_bits = partition_bits;
3991 parameters[0] = best_rice_parameter;
3992 bits_ += best_partition_bits;
3995 unsigned partition, residual_sample;
3996 unsigned partition_samples;
3997 FLAC__uint64 mean, k;
3998 const unsigned partitions = 1u << partition_order;
3999 for(partition = residual_sample = 0; partition < partitions; partition++) {
4000 partition_samples = (residual_samples+predictor_order) >> partition_order;
4001 if(partition == 0) {
4002 if(partition_samples <= predictor_order)
4005 partition_samples -= predictor_order;
4007 mean = abs_residual_partition_sums[partition];
4008 /* we are basically calculating the size in bits of the
4009 * average residual magnitude in the partition:
4010 * rice_parameter = floor(log2(mean/partition_samples))
4011 * 'mean' is not a good name for the variable, it is
4012 * actually the sum of magnitudes of all residual values
4013 * in the partition, so the actual mean is
4014 * mean/partition_samples
4016 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4018 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4019 #ifdef DEBUG_VERBOSE
4020 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4022 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4025 best_partition_bits = (unsigned)(-1);
4026 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4027 if(rice_parameter_search_dist) {
4028 if(rice_parameter < rice_parameter_search_dist)
4029 min_rice_parameter = 0;
4031 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4032 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4033 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4034 #ifdef DEBUG_VERBOSE
4035 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4037 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4041 min_rice_parameter = max_rice_parameter = rice_parameter;
4043 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4045 #ifdef EXACT_RICE_BITS_CALCULATION
4046 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample);
4048 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]);
4050 if(partition_bits < best_partition_bits) {
4051 best_rice_parameter = rice_parameter;
4052 best_partition_bits = partition_bits;
4054 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4057 if(search_for_escapes) {
4058 partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
4059 if(partition_bits <= best_partition_bits) {
4060 raw_bits[partition] = raw_bits_per_partition[partition];
4061 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4062 best_partition_bits = partition_bits;
4065 parameters[partition] = best_rice_parameter;
4066 bits_ += best_partition_bits;
4067 residual_sample += partition_samples;
4075 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4080 for(i = 0; i < samples && !(x&1); i++)
4087 for(shift = 0; !(x&1); shift++)
4092 for(i = 0; i < samples; i++)
4093 signal[i] >>= shift;
4099 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4103 for(channel = 0; channel < channels; channel++)
4104 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4106 fifo->tail += wide_samples;
4108 FLAC__ASSERT(fifo->tail <= fifo->size);
4111 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4114 unsigned sample, wide_sample;
4115 unsigned tail = fifo->tail;
4117 sample = input_offset * channels;
4118 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4119 for(channel = 0; channel < channels; channel++)
4120 fifo->data[channel][tail] = input[sample++];
4125 FLAC__ASSERT(fifo->tail <= fifo->size);
4128 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4130 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4131 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4134 if(encoder->private_->verify.needs_magic_hack) {
4135 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4136 *bytes = FLAC__STREAM_SYNC_LENGTH;
4137 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4138 encoder->private_->verify.needs_magic_hack = false;
4141 if(encoded_bytes == 0) {
4143 * If we get here, a FIFO underflow has occurred,
4144 * which means there is a bug somewhere.
4147 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4149 else if(encoded_bytes < *bytes)
4150 *bytes = encoded_bytes;
4151 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4152 encoder->private_->verify.output.data += *bytes;
4153 encoder->private_->verify.output.bytes -= *bytes;
4156 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4159 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4161 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4163 const unsigned channels = frame->header.channels;
4164 const unsigned blocksize = frame->header.blocksize;
4165 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4169 for(channel = 0; channel < channels; channel++) {
4170 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4171 unsigned i, sample = 0;
4172 FLAC__int32 expect = 0, got = 0;
4174 for(i = 0; i < blocksize; i++) {
4175 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4177 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4178 got = (FLAC__int32)buffer[channel][i];
4182 FLAC__ASSERT(i < blocksize);
4183 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4184 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4185 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4186 encoder->private_->verify.error_stats.channel = channel;
4187 encoder->private_->verify.error_stats.sample = sample;
4188 encoder->private_->verify.error_stats.expected = expect;
4189 encoder->private_->verify.error_stats.got = got;
4190 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4191 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4194 /* dequeue the frame from the fifo */
4195 encoder->private_->verify.input_fifo.tail -= blocksize;
4196 FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
4197 for(channel = 0; channel < channels; channel++)
4198 memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail * sizeof(encoder->private_->verify.input_fifo.data[0][0]));
4199 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4202 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4204 (void)decoder, (void)metadata, (void)client_data;
4207 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4209 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4210 (void)decoder, (void)status;
4211 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4214 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4218 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4220 if (feof(encoder->private_->file))
4221 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4222 else if (ferror(encoder->private_->file))
4223 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4225 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4228 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4232 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
4233 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4235 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4238 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4244 offset = ftello(encoder->private_->file);
4247 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4250 *absolute_byte_offset = (FLAC__uint64)offset;
4251 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4255 #ifdef FLAC__VALGRIND_TESTING
4256 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4258 size_t ret = fwrite(ptr, size, nmemb, stream);
4264 #define local__fwrite fwrite
4267 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4269 (void)client_data, (void)current_frame;
4271 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4272 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4274 /* We would like to be able to use 'samples > 0' in the
4275 * clause here but currently because of the nature of our
4276 * Ogg writing implementation, 'samples' is always 0 (see
4277 * ogg_encoder_aspect.c). The downside is extra progress
4280 encoder->private_->is_ogg? true :
4285 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4286 * because at this point in the callback chain, the stats
4287 * have not been updated. Only after we return and control
4288 * gets back to write_frame_() are the stats updated
4290 encoder->private_->progress_callback(encoder, encoder->private_->bytes_written+bytes, encoder->private_->samples_written+samples, encoder->private_->frames_written+(samples?1:0), encoder->private_->total_frames_estimate, encoder->private_->client_data);
4292 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4295 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4299 * This will forcibly set stdout to binary mode (for OSes that require it)
4301 FILE *get_binary_stdout_(void)
4303 /* if something breaks here it is probably due to the presence or
4304 * absence of an underscore before the identifiers 'setmode',
4305 * 'fileno', and/or 'O_BINARY'; check your system header files.
4307 #if defined _MSC_VER || defined __MINGW32__
4308 _setmode(_fileno(stdout), _O_BINARY);
4309 #elif defined __CYGWIN__
4310 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4311 setmode(_fileno(stdout), _O_BINARY);
4312 #elif defined __EMX__
4313 setmode(fileno(stdout), O_BINARY);