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);
1476 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1479 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1480 /* but it's too hard to specify the string in a locale-specific way */
1482 encoder->protected_->num_apodizations = 1;
1483 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1484 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1487 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1488 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1489 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1490 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1491 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1492 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1493 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1494 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1498 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1500 FLAC__ASSERT(0 != encoder);
1501 FLAC__ASSERT(0 != encoder->private_);
1502 FLAC__ASSERT(0 != encoder->protected_);
1503 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1505 encoder->protected_->blocksize = value;
1509 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1511 FLAC__ASSERT(0 != encoder);
1512 FLAC__ASSERT(0 != encoder->private_);
1513 FLAC__ASSERT(0 != encoder->protected_);
1514 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1516 encoder->protected_->do_mid_side_stereo = value;
1520 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1522 FLAC__ASSERT(0 != encoder);
1523 FLAC__ASSERT(0 != encoder->private_);
1524 FLAC__ASSERT(0 != encoder->protected_);
1525 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1527 encoder->protected_->loose_mid_side_stereo = value;
1531 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1533 FLAC__ASSERT(0 != encoder);
1534 FLAC__ASSERT(0 != encoder->private_);
1535 FLAC__ASSERT(0 != encoder->protected_);
1536 FLAC__ASSERT(0 != specification);
1537 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1539 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1540 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1542 encoder->protected_->num_apodizations = 0;
1544 const char *s = strchr(specification, ';');
1545 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1546 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1547 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1548 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1549 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1550 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1551 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1552 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1553 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1554 else if(n==6 && 0 == strncmp("connes" , specification, n))
1555 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1556 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1557 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1558 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1559 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1560 if (stddev > 0.0 && stddev <= 0.5) {
1561 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1562 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1565 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1566 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1567 else if(n==4 && 0 == strncmp("hann" , specification, n))
1568 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1569 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1570 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1571 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1572 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1573 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1574 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1575 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1576 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1577 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1578 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1579 if (p >= 0.0 && p <= 1.0) {
1580 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1581 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1584 else if(n==5 && 0 == strncmp("welch" , specification, n))
1585 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1586 if (encoder->protected_->num_apodizations == 32)
1589 specification = s+1;
1593 if(encoder->protected_->num_apodizations == 0) {
1594 encoder->protected_->num_apodizations = 1;
1595 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1596 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1602 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1604 FLAC__ASSERT(0 != encoder);
1605 FLAC__ASSERT(0 != encoder->private_);
1606 FLAC__ASSERT(0 != encoder->protected_);
1607 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1609 encoder->protected_->max_lpc_order = value;
1613 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1615 FLAC__ASSERT(0 != encoder);
1616 FLAC__ASSERT(0 != encoder->private_);
1617 FLAC__ASSERT(0 != encoder->protected_);
1618 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1620 encoder->protected_->qlp_coeff_precision = value;
1624 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1626 FLAC__ASSERT(0 != encoder);
1627 FLAC__ASSERT(0 != encoder->private_);
1628 FLAC__ASSERT(0 != encoder->protected_);
1629 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1631 encoder->protected_->do_qlp_coeff_prec_search = value;
1635 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1637 FLAC__ASSERT(0 != encoder);
1638 FLAC__ASSERT(0 != encoder->private_);
1639 FLAC__ASSERT(0 != encoder->protected_);
1640 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1643 /*@@@ deprecated: */
1644 encoder->protected_->do_escape_coding = value;
1651 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1653 FLAC__ASSERT(0 != encoder);
1654 FLAC__ASSERT(0 != encoder->private_);
1655 FLAC__ASSERT(0 != encoder->protected_);
1656 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1658 encoder->protected_->do_exhaustive_model_search = value;
1662 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1664 FLAC__ASSERT(0 != encoder);
1665 FLAC__ASSERT(0 != encoder->private_);
1666 FLAC__ASSERT(0 != encoder->protected_);
1667 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1669 encoder->protected_->min_residual_partition_order = value;
1673 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1675 FLAC__ASSERT(0 != encoder);
1676 FLAC__ASSERT(0 != encoder->private_);
1677 FLAC__ASSERT(0 != encoder->protected_);
1678 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1680 encoder->protected_->max_residual_partition_order = value;
1684 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1686 FLAC__ASSERT(0 != encoder);
1687 FLAC__ASSERT(0 != encoder->private_);
1688 FLAC__ASSERT(0 != encoder->protected_);
1689 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1692 /*@@@ deprecated: */
1693 encoder->protected_->rice_parameter_search_dist = value;
1700 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1702 FLAC__ASSERT(0 != encoder);
1703 FLAC__ASSERT(0 != encoder->private_);
1704 FLAC__ASSERT(0 != encoder->protected_);
1705 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1707 encoder->protected_->total_samples_estimate = value;
1711 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1713 FLAC__ASSERT(0 != encoder);
1714 FLAC__ASSERT(0 != encoder->private_);
1715 FLAC__ASSERT(0 != encoder->protected_);
1716 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1722 /* realloc() does not do exactly what we want so... */
1723 if(encoder->protected_->metadata) {
1724 free(encoder->protected_->metadata);
1725 encoder->protected_->metadata = 0;
1726 encoder->protected_->num_metadata_blocks = 0;
1729 FLAC__StreamMetadata **m;
1730 if(0 == (m = (FLAC__StreamMetadata**)malloc(sizeof(m[0]) * num_blocks)))
1732 memcpy(m, metadata, sizeof(m[0]) * num_blocks);
1733 encoder->protected_->metadata = m;
1734 encoder->protected_->num_metadata_blocks = num_blocks;
1737 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1744 * These three functions are not static, but not publically exposed in
1745 * include/FLAC/ either. They are used by the test suite.
1747 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1749 FLAC__ASSERT(0 != encoder);
1750 FLAC__ASSERT(0 != encoder->private_);
1751 FLAC__ASSERT(0 != encoder->protected_);
1752 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1754 encoder->private_->disable_constant_subframes = value;
1758 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1760 FLAC__ASSERT(0 != encoder);
1761 FLAC__ASSERT(0 != encoder->private_);
1762 FLAC__ASSERT(0 != encoder->protected_);
1763 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1765 encoder->private_->disable_fixed_subframes = value;
1769 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1771 FLAC__ASSERT(0 != encoder);
1772 FLAC__ASSERT(0 != encoder->private_);
1773 FLAC__ASSERT(0 != encoder->protected_);
1774 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1776 encoder->private_->disable_verbatim_subframes = value;
1780 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1782 FLAC__ASSERT(0 != encoder);
1783 FLAC__ASSERT(0 != encoder->private_);
1784 FLAC__ASSERT(0 != encoder->protected_);
1785 return encoder->protected_->state;
1788 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1790 FLAC__ASSERT(0 != encoder);
1791 FLAC__ASSERT(0 != encoder->private_);
1792 FLAC__ASSERT(0 != encoder->protected_);
1793 if(encoder->protected_->verify)
1794 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1796 return FLAC__STREAM_DECODER_UNINITIALIZED;
1799 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1801 FLAC__ASSERT(0 != encoder);
1802 FLAC__ASSERT(0 != encoder->private_);
1803 FLAC__ASSERT(0 != encoder->protected_);
1804 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1805 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1807 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1810 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)
1812 FLAC__ASSERT(0 != encoder);
1813 FLAC__ASSERT(0 != encoder->private_);
1814 FLAC__ASSERT(0 != encoder->protected_);
1815 if(0 != absolute_sample)
1816 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1817 if(0 != frame_number)
1818 *frame_number = encoder->private_->verify.error_stats.frame_number;
1820 *channel = encoder->private_->verify.error_stats.channel;
1822 *sample = encoder->private_->verify.error_stats.sample;
1824 *expected = encoder->private_->verify.error_stats.expected;
1826 *got = encoder->private_->verify.error_stats.got;
1829 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1831 FLAC__ASSERT(0 != encoder);
1832 FLAC__ASSERT(0 != encoder->private_);
1833 FLAC__ASSERT(0 != encoder->protected_);
1834 return encoder->protected_->verify;
1837 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1839 FLAC__ASSERT(0 != encoder);
1840 FLAC__ASSERT(0 != encoder->private_);
1841 FLAC__ASSERT(0 != encoder->protected_);
1842 return encoder->protected_->streamable_subset;
1845 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder)
1847 FLAC__ASSERT(0 != encoder);
1848 FLAC__ASSERT(0 != encoder->private_);
1849 FLAC__ASSERT(0 != encoder->protected_);
1850 return encoder->protected_->do_md5;
1853 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1855 FLAC__ASSERT(0 != encoder);
1856 FLAC__ASSERT(0 != encoder->private_);
1857 FLAC__ASSERT(0 != encoder->protected_);
1858 return encoder->protected_->channels;
1861 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1863 FLAC__ASSERT(0 != encoder);
1864 FLAC__ASSERT(0 != encoder->private_);
1865 FLAC__ASSERT(0 != encoder->protected_);
1866 return encoder->protected_->bits_per_sample;
1869 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1871 FLAC__ASSERT(0 != encoder);
1872 FLAC__ASSERT(0 != encoder->private_);
1873 FLAC__ASSERT(0 != encoder->protected_);
1874 return encoder->protected_->sample_rate;
1877 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1879 FLAC__ASSERT(0 != encoder);
1880 FLAC__ASSERT(0 != encoder->private_);
1881 FLAC__ASSERT(0 != encoder->protected_);
1882 return encoder->protected_->blocksize;
1885 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1887 FLAC__ASSERT(0 != encoder);
1888 FLAC__ASSERT(0 != encoder->private_);
1889 FLAC__ASSERT(0 != encoder->protected_);
1890 return encoder->protected_->do_mid_side_stereo;
1893 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1895 FLAC__ASSERT(0 != encoder);
1896 FLAC__ASSERT(0 != encoder->private_);
1897 FLAC__ASSERT(0 != encoder->protected_);
1898 return encoder->protected_->loose_mid_side_stereo;
1901 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1903 FLAC__ASSERT(0 != encoder);
1904 FLAC__ASSERT(0 != encoder->private_);
1905 FLAC__ASSERT(0 != encoder->protected_);
1906 return encoder->protected_->max_lpc_order;
1909 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1911 FLAC__ASSERT(0 != encoder);
1912 FLAC__ASSERT(0 != encoder->private_);
1913 FLAC__ASSERT(0 != encoder->protected_);
1914 return encoder->protected_->qlp_coeff_precision;
1917 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1919 FLAC__ASSERT(0 != encoder);
1920 FLAC__ASSERT(0 != encoder->private_);
1921 FLAC__ASSERT(0 != encoder->protected_);
1922 return encoder->protected_->do_qlp_coeff_prec_search;
1925 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1927 FLAC__ASSERT(0 != encoder);
1928 FLAC__ASSERT(0 != encoder->private_);
1929 FLAC__ASSERT(0 != encoder->protected_);
1930 return encoder->protected_->do_escape_coding;
1933 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1935 FLAC__ASSERT(0 != encoder);
1936 FLAC__ASSERT(0 != encoder->private_);
1937 FLAC__ASSERT(0 != encoder->protected_);
1938 return encoder->protected_->do_exhaustive_model_search;
1941 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1943 FLAC__ASSERT(0 != encoder);
1944 FLAC__ASSERT(0 != encoder->private_);
1945 FLAC__ASSERT(0 != encoder->protected_);
1946 return encoder->protected_->min_residual_partition_order;
1949 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1951 FLAC__ASSERT(0 != encoder);
1952 FLAC__ASSERT(0 != encoder->private_);
1953 FLAC__ASSERT(0 != encoder->protected_);
1954 return encoder->protected_->max_residual_partition_order;
1957 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1959 FLAC__ASSERT(0 != encoder);
1960 FLAC__ASSERT(0 != encoder->private_);
1961 FLAC__ASSERT(0 != encoder->protected_);
1962 return encoder->protected_->rice_parameter_search_dist;
1965 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1967 FLAC__ASSERT(0 != encoder);
1968 FLAC__ASSERT(0 != encoder->private_);
1969 FLAC__ASSERT(0 != encoder->protected_);
1970 return encoder->protected_->total_samples_estimate;
1973 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1975 unsigned i, j = 0, channel;
1976 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1978 FLAC__ASSERT(0 != encoder);
1979 FLAC__ASSERT(0 != encoder->private_);
1980 FLAC__ASSERT(0 != encoder->protected_);
1981 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1984 const unsigned n = min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j);
1986 if(encoder->protected_->verify)
1987 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n);
1989 for(channel = 0; channel < channels; channel++)
1990 memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n);
1992 if(encoder->protected_->do_mid_side_stereo) {
1993 FLAC__ASSERT(channels == 2);
1994 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
1995 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
1996 encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j];
1997 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' ! */
2003 encoder->private_->current_sample_number += n;
2005 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2006 if(encoder->private_->current_sample_number > blocksize) {
2007 FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_);
2008 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2009 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2011 /* move unprocessed overread samples to beginnings of arrays */
2012 for(channel = 0; channel < channels; channel++)
2013 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2014 if(encoder->protected_->do_mid_side_stereo) {
2015 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2016 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2018 encoder->private_->current_sample_number = 1;
2020 } while(j < samples);
2025 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2027 unsigned i, j, k, channel;
2028 FLAC__int32 x, mid, side;
2029 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2031 FLAC__ASSERT(0 != encoder);
2032 FLAC__ASSERT(0 != encoder->private_);
2033 FLAC__ASSERT(0 != encoder->protected_);
2034 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2038 * we have several flavors of the same basic loop, optimized for
2039 * different conditions:
2041 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2043 * stereo coding: unroll channel loop
2046 if(encoder->protected_->verify)
2047 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2049 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2050 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2051 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2053 encoder->private_->integer_signal[1][i] = x;
2056 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2057 encoder->private_->integer_signal_mid_side[1][i] = side;
2058 encoder->private_->integer_signal_mid_side[0][i] = mid;
2060 encoder->private_->current_sample_number = i;
2061 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2063 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2065 /* move unprocessed overread samples to beginnings of arrays */
2066 FLAC__ASSERT(i == blocksize+OVERREAD_);
2067 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2068 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize];
2069 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize];
2070 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2071 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2072 encoder->private_->current_sample_number = 1;
2074 } while(j < samples);
2078 * independent channel coding: buffer each channel in inner loop
2081 if(encoder->protected_->verify)
2082 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2084 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2085 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2086 for(channel = 0; channel < channels; channel++)
2087 encoder->private_->integer_signal[channel][i] = buffer[k++];
2089 encoder->private_->current_sample_number = i;
2090 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2092 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2094 /* move unprocessed overread samples to beginnings of arrays */
2095 FLAC__ASSERT(i == blocksize+OVERREAD_);
2096 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2097 for(channel = 0; channel < channels; channel++)
2098 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2099 encoder->private_->current_sample_number = 1;
2101 } while(j < samples);
2107 /***********************************************************************
2109 * Private class methods
2111 ***********************************************************************/
2113 void set_defaults_(FLAC__StreamEncoder *encoder)
2115 FLAC__ASSERT(0 != encoder);
2117 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2118 encoder->protected_->verify = true;
2120 encoder->protected_->verify = false;
2122 encoder->protected_->streamable_subset = true;
2123 encoder->protected_->do_md5 = true;
2124 encoder->protected_->do_mid_side_stereo = false;
2125 encoder->protected_->loose_mid_side_stereo = false;
2126 encoder->protected_->channels = 2;
2127 encoder->protected_->bits_per_sample = 16;
2128 encoder->protected_->sample_rate = 44100;
2129 encoder->protected_->blocksize = 0;
2130 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2131 encoder->protected_->num_apodizations = 1;
2132 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2133 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2135 encoder->protected_->max_lpc_order = 0;
2136 encoder->protected_->qlp_coeff_precision = 0;
2137 encoder->protected_->do_qlp_coeff_prec_search = false;
2138 encoder->protected_->do_exhaustive_model_search = false;
2139 encoder->protected_->do_escape_coding = false;
2140 encoder->protected_->min_residual_partition_order = 0;
2141 encoder->protected_->max_residual_partition_order = 0;
2142 encoder->protected_->rice_parameter_search_dist = 0;
2143 encoder->protected_->total_samples_estimate = 0;
2144 encoder->protected_->metadata = 0;
2145 encoder->protected_->num_metadata_blocks = 0;
2147 encoder->private_->seek_table = 0;
2148 encoder->private_->disable_constant_subframes = false;
2149 encoder->private_->disable_fixed_subframes = false;
2150 encoder->private_->disable_verbatim_subframes = false;
2152 encoder->private_->is_ogg = false;
2154 encoder->private_->read_callback = 0;
2155 encoder->private_->write_callback = 0;
2156 encoder->private_->seek_callback = 0;
2157 encoder->private_->tell_callback = 0;
2158 encoder->private_->metadata_callback = 0;
2159 encoder->private_->progress_callback = 0;
2160 encoder->private_->client_data = 0;
2163 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2167 void free_(FLAC__StreamEncoder *encoder)
2169 unsigned i, channel;
2171 FLAC__ASSERT(0 != encoder);
2172 if(encoder->protected_->metadata) {
2173 free(encoder->protected_->metadata);
2174 encoder->protected_->metadata = 0;
2175 encoder->protected_->num_metadata_blocks = 0;
2177 for(i = 0; i < encoder->protected_->channels; i++) {
2178 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2179 free(encoder->private_->integer_signal_unaligned[i]);
2180 encoder->private_->integer_signal_unaligned[i] = 0;
2182 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2183 if(0 != encoder->private_->real_signal_unaligned[i]) {
2184 free(encoder->private_->real_signal_unaligned[i]);
2185 encoder->private_->real_signal_unaligned[i] = 0;
2189 for(i = 0; i < 2; i++) {
2190 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2191 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2192 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2194 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2195 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2196 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2197 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2201 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2202 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2203 if(0 != encoder->private_->window_unaligned[i]) {
2204 free(encoder->private_->window_unaligned[i]);
2205 encoder->private_->window_unaligned[i] = 0;
2208 if(0 != encoder->private_->windowed_signal_unaligned) {
2209 free(encoder->private_->windowed_signal_unaligned);
2210 encoder->private_->windowed_signal_unaligned = 0;
2213 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2214 for(i = 0; i < 2; i++) {
2215 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2216 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2217 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2221 for(channel = 0; channel < 2; channel++) {
2222 for(i = 0; i < 2; i++) {
2223 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2224 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2225 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2229 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2230 free(encoder->private_->abs_residual_partition_sums_unaligned);
2231 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2233 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2234 free(encoder->private_->raw_bits_per_partition_unaligned);
2235 encoder->private_->raw_bits_per_partition_unaligned = 0;
2237 if(encoder->protected_->verify) {
2238 for(i = 0; i < encoder->protected_->channels; i++) {
2239 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2240 free(encoder->private_->verify.input_fifo.data[i]);
2241 encoder->private_->verify.input_fifo.data[i] = 0;
2245 FLAC__bitwriter_free(encoder->private_->frame);
2248 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2251 unsigned i, channel;
2253 FLAC__ASSERT(new_blocksize > 0);
2254 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2255 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2257 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2258 if(new_blocksize <= encoder->private_->input_capacity)
2263 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2264 * requires that the input arrays (in our case the integer signals)
2265 * have a buffer of up to 3 zeroes in front (at negative indices) for
2266 * alignment purposes; we use 4 in front to keep the data well-aligned.
2269 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2270 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2271 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2272 encoder->private_->integer_signal[i] += 4;
2273 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2274 #if 0 /* @@@ currently unused */
2275 if(encoder->protected_->max_lpc_order > 0)
2276 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2280 for(i = 0; ok && i < 2; i++) {
2281 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]);
2282 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2283 encoder->private_->integer_signal_mid_side[i] += 4;
2284 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2285 #if 0 /* @@@ currently unused */
2286 if(encoder->protected_->max_lpc_order > 0)
2287 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]);
2291 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2292 if(ok && encoder->protected_->max_lpc_order > 0) {
2293 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2294 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2295 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2298 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2299 for(i = 0; ok && i < 2; i++) {
2300 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2303 for(channel = 0; ok && channel < 2; channel++) {
2304 for(i = 0; ok && i < 2; i++) {
2305 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]);
2308 /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */
2309 /*@@@ 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) */
2310 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2311 if(encoder->protected_->do_escape_coding)
2312 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2314 /* now adjust the windows if the blocksize has changed */
2315 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2316 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2317 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2318 switch(encoder->protected_->apodizations[i].type) {
2319 case FLAC__APODIZATION_BARTLETT:
2320 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2322 case FLAC__APODIZATION_BARTLETT_HANN:
2323 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2325 case FLAC__APODIZATION_BLACKMAN:
2326 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2328 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2329 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2331 case FLAC__APODIZATION_CONNES:
2332 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2334 case FLAC__APODIZATION_FLATTOP:
2335 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2337 case FLAC__APODIZATION_GAUSS:
2338 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2340 case FLAC__APODIZATION_HAMMING:
2341 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2343 case FLAC__APODIZATION_HANN:
2344 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2346 case FLAC__APODIZATION_KAISER_BESSEL:
2347 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2349 case FLAC__APODIZATION_NUTTALL:
2350 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2352 case FLAC__APODIZATION_RECTANGLE:
2353 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2355 case FLAC__APODIZATION_TRIANGLE:
2356 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2358 case FLAC__APODIZATION_TUKEY:
2359 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2361 case FLAC__APODIZATION_WELCH:
2362 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2366 /* double protection */
2367 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2375 encoder->private_->input_capacity = new_blocksize;
2377 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2382 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2384 const FLAC__byte *buffer;
2387 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2389 if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
2390 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2394 if(encoder->protected_->verify) {
2395 encoder->private_->verify.output.data = buffer;
2396 encoder->private_->verify.output.bytes = bytes;
2397 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2398 encoder->private_->verify.needs_magic_hack = true;
2401 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2402 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2403 FLAC__bitwriter_clear(encoder->private_->frame);
2404 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2405 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2411 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2412 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2413 FLAC__bitwriter_clear(encoder->private_->frame);
2414 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2418 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2419 FLAC__bitwriter_clear(encoder->private_->frame);
2422 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2423 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2429 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2431 FLAC__StreamEncoderWriteStatus status;
2432 FLAC__uint64 output_position = 0;
2434 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2435 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2436 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2437 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2441 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2444 FLAC__MetadataType type = (buffer[0] & 0x7f);
2445 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2446 encoder->protected_->streaminfo_offset = output_position;
2447 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2448 encoder->protected_->seektable_offset = output_position;
2452 * Mark the current seek point if hit (if audio_offset == 0 that
2453 * means we're still writing metadata and haven't hit the first
2456 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2457 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2458 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2459 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2460 FLAC__uint64 test_sample;
2462 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2463 test_sample = encoder->private_->seek_table->points[i].sample_number;
2464 if(test_sample > frame_last_sample) {
2467 else if(test_sample >= frame_first_sample) {
2468 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2469 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2470 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2471 encoder->private_->first_seekpoint_to_check++;
2472 /* DO NOT: "break;" and here's why:
2473 * The seektable template may contain more than one target
2474 * sample for any given frame; we will keep looping, generating
2475 * duplicate seekpoints for them, and we'll clean it up later,
2476 * just before writing the seektable back to the metadata.
2480 encoder->private_->first_seekpoint_to_check++;
2486 if(encoder->private_->is_ogg) {
2487 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2488 &encoder->protected_->ogg_encoder_aspect,
2492 encoder->private_->current_frame_number,
2494 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2496 encoder->private_->client_data
2501 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2503 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2504 encoder->private_->bytes_written += bytes;
2505 encoder->private_->samples_written += samples;
2506 /* we keep a high watermark on the number of frames written because
2507 * when the encoder goes back to write metadata, 'current_frame'
2508 * will drop back to 0.
2510 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2513 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2518 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2519 void update_metadata_(const FLAC__StreamEncoder *encoder)
2521 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2522 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2523 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2524 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2525 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2526 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2527 FLAC__StreamEncoderSeekStatus seek_status;
2529 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2531 /* All this is based on intimate knowledge of the stream header
2532 * layout, but a change to the header format that would break this
2533 * would also break all streams encoded in the previous format.
2537 * Write MD5 signature
2540 const unsigned md5_offset =
2541 FLAC__STREAM_METADATA_HEADER_LENGTH +
2543 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2544 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2545 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2546 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2547 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2548 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2549 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2550 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2553 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2554 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2555 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2558 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2559 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2565 * Write total samples
2568 const unsigned total_samples_byte_offset =
2569 FLAC__STREAM_METADATA_HEADER_LENGTH +
2571 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2572 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2573 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2574 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2575 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2576 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2577 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2581 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2582 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2583 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2584 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2585 b[4] = (FLAC__byte)(samples & 0xFF);
2586 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) {
2587 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2588 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2591 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2592 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2598 * Write min/max framesize
2601 const unsigned min_framesize_offset =
2602 FLAC__STREAM_METADATA_HEADER_LENGTH +
2604 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2605 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2608 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2609 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2610 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2611 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2612 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2613 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2614 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) {
2615 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2616 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2619 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2620 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2628 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2631 FLAC__format_seektable_sort(encoder->private_->seek_table);
2633 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2635 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) {
2636 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2637 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2641 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2644 xx = encoder->private_->seek_table->points[i].sample_number;
2645 b[7] = (FLAC__byte)xx; xx >>= 8;
2646 b[6] = (FLAC__byte)xx; xx >>= 8;
2647 b[5] = (FLAC__byte)xx; xx >>= 8;
2648 b[4] = (FLAC__byte)xx; xx >>= 8;
2649 b[3] = (FLAC__byte)xx; xx >>= 8;
2650 b[2] = (FLAC__byte)xx; xx >>= 8;
2651 b[1] = (FLAC__byte)xx; xx >>= 8;
2652 b[0] = (FLAC__byte)xx; xx >>= 8;
2653 xx = encoder->private_->seek_table->points[i].stream_offset;
2654 b[15] = (FLAC__byte)xx; xx >>= 8;
2655 b[14] = (FLAC__byte)xx; xx >>= 8;
2656 b[13] = (FLAC__byte)xx; xx >>= 8;
2657 b[12] = (FLAC__byte)xx; xx >>= 8;
2658 b[11] = (FLAC__byte)xx; xx >>= 8;
2659 b[10] = (FLAC__byte)xx; xx >>= 8;
2660 b[9] = (FLAC__byte)xx; xx >>= 8;
2661 b[8] = (FLAC__byte)xx; xx >>= 8;
2662 x = encoder->private_->seek_table->points[i].frame_samples;
2663 b[17] = (FLAC__byte)x; x >>= 8;
2664 b[16] = (FLAC__byte)x; x >>= 8;
2665 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2666 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2674 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2675 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2677 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2678 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2679 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2680 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2681 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2682 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2683 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2684 FLAC__STREAM_SYNC_LENGTH
2686 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2687 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2688 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2689 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2690 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2693 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2694 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2696 /* Pre-check that client supports seeking, since we don't want the
2697 * ogg_helper code to ever have to deal with this condition.
2699 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2702 /* All this is based on intimate knowledge of the stream header
2703 * layout, but a change to the header format that would break this
2704 * would also break all streams encoded in the previous format.
2708 ** Write STREAMINFO stats
2710 simple_ogg_page__init(&page);
2711 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2712 simple_ogg_page__clear(&page);
2713 return; /* state already set */
2717 * Write MD5 signature
2720 const unsigned md5_offset =
2721 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2722 FLAC__STREAM_METADATA_HEADER_LENGTH +
2724 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2725 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2726 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2727 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2728 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2729 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2730 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2731 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2734 if(md5_offset + 16 > (unsigned)page.body_len) {
2735 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2736 simple_ogg_page__clear(&page);
2739 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2743 * Write total samples
2746 const unsigned total_samples_byte_offset =
2747 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2748 FLAC__STREAM_METADATA_HEADER_LENGTH +
2750 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2751 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2752 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2753 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2754 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2755 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2756 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2760 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2761 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2762 simple_ogg_page__clear(&page);
2765 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2766 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2767 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2768 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2769 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2770 b[4] = (FLAC__byte)(samples & 0xFF);
2771 memcpy(page.body + total_samples_byte_offset, b, 5);
2775 * Write min/max framesize
2778 const unsigned min_framesize_offset =
2779 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2780 FLAC__STREAM_METADATA_HEADER_LENGTH +
2782 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2783 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2786 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
2787 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2788 simple_ogg_page__clear(&page);
2791 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2792 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2793 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2794 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2795 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2796 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2797 memcpy(page.body + min_framesize_offset, b, 6);
2799 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2800 simple_ogg_page__clear(&page);
2801 return; /* state already set */
2803 simple_ogg_page__clear(&page);
2808 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2812 FLAC__format_seektable_sort(encoder->private_->seek_table);
2814 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2816 simple_ogg_page__init(&page);
2817 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2818 simple_ogg_page__clear(&page);
2819 return; /* state already set */
2822 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
2823 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2824 simple_ogg_page__clear(&page);
2828 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
2831 xx = encoder->private_->seek_table->points[i].sample_number;
2832 b[7] = (FLAC__byte)xx; xx >>= 8;
2833 b[6] = (FLAC__byte)xx; xx >>= 8;
2834 b[5] = (FLAC__byte)xx; xx >>= 8;
2835 b[4] = (FLAC__byte)xx; xx >>= 8;
2836 b[3] = (FLAC__byte)xx; xx >>= 8;
2837 b[2] = (FLAC__byte)xx; xx >>= 8;
2838 b[1] = (FLAC__byte)xx; xx >>= 8;
2839 b[0] = (FLAC__byte)xx; xx >>= 8;
2840 xx = encoder->private_->seek_table->points[i].stream_offset;
2841 b[15] = (FLAC__byte)xx; xx >>= 8;
2842 b[14] = (FLAC__byte)xx; xx >>= 8;
2843 b[13] = (FLAC__byte)xx; xx >>= 8;
2844 b[12] = (FLAC__byte)xx; xx >>= 8;
2845 b[11] = (FLAC__byte)xx; xx >>= 8;
2846 b[10] = (FLAC__byte)xx; xx >>= 8;
2847 b[9] = (FLAC__byte)xx; xx >>= 8;
2848 b[8] = (FLAC__byte)xx; xx >>= 8;
2849 x = encoder->private_->seek_table->points[i].frame_samples;
2850 b[17] = (FLAC__byte)x; x >>= 8;
2851 b[16] = (FLAC__byte)x; x >>= 8;
2855 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2856 simple_ogg_page__clear(&page);
2857 return; /* state already set */
2859 simple_ogg_page__clear(&page);
2864 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
2867 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2870 * Accumulate raw signal to the MD5 signature
2872 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)) {
2873 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2878 * Process the frame header and subframes into the frame bitbuffer
2880 if(!process_subframes_(encoder, is_fractional_block)) {
2881 /* the above function sets the state for us in case of an error */
2886 * Zero-pad the frame to a byte_boundary
2888 if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
2889 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2894 * CRC-16 the whole thing
2896 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2898 !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
2899 !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
2901 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2908 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
2909 /* the above function sets the state for us in case of an error */
2914 * Get ready for the next frame
2916 encoder->private_->current_sample_number = 0;
2917 encoder->private_->current_frame_number++;
2918 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
2923 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
2925 FLAC__FrameHeader frame_header;
2926 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
2927 FLAC__bool do_independent, do_mid_side;
2930 * Calculate the min,max Rice partition orders
2932 if(is_fractional_block) {
2933 max_partition_order = 0;
2936 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
2937 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
2939 min_partition_order = min(min_partition_order, max_partition_order);
2944 frame_header.blocksize = encoder->protected_->blocksize;
2945 frame_header.sample_rate = encoder->protected_->sample_rate;
2946 frame_header.channels = encoder->protected_->channels;
2947 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
2948 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
2949 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
2950 frame_header.number.frame_number = encoder->private_->current_frame_number;
2953 * Figure out what channel assignments to try
2955 if(encoder->protected_->do_mid_side_stereo) {
2956 if(encoder->protected_->loose_mid_side_stereo) {
2957 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
2958 do_independent = true;
2962 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
2963 do_mid_side = !do_independent;
2967 do_independent = true;
2972 do_independent = true;
2973 do_mid_side = false;
2976 FLAC__ASSERT(do_independent || do_mid_side);
2979 * Check for wasted bits; set effective bps for each subframe
2981 if(do_independent) {
2982 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2983 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
2984 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
2985 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
2989 FLAC__ASSERT(encoder->protected_->channels == 2);
2990 for(channel = 0; channel < 2; channel++) {
2991 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
2992 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
2993 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
2998 * First do a normal encoding pass of each independent channel
3000 if(do_independent) {
3001 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3005 min_partition_order,
3006 max_partition_order,
3008 encoder->private_->subframe_bps[channel],
3009 encoder->private_->integer_signal[channel],
3010 encoder->private_->subframe_workspace_ptr[channel],
3011 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
3012 encoder->private_->residual_workspace[channel],
3013 encoder->private_->best_subframe+channel,
3014 encoder->private_->best_subframe_bits+channel
3022 * Now do mid and side channels if requested
3025 FLAC__ASSERT(encoder->protected_->channels == 2);
3027 for(channel = 0; channel < 2; channel++) {
3031 min_partition_order,
3032 max_partition_order,
3034 encoder->private_->subframe_bps_mid_side[channel],
3035 encoder->private_->integer_signal_mid_side[channel],
3036 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3037 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3038 encoder->private_->residual_workspace_mid_side[channel],
3039 encoder->private_->best_subframe_mid_side+channel,
3040 encoder->private_->best_subframe_bits_mid_side+channel
3048 * Compose the frame bitbuffer
3051 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3052 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3053 FLAC__ChannelAssignment channel_assignment;
3055 FLAC__ASSERT(encoder->protected_->channels == 2);
3057 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3058 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3061 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3065 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
3066 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
3067 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
3068 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
3069 FLAC__ASSERT(do_independent && do_mid_side);
3071 /* We have to figure out which channel assignent results in the smallest frame */
3072 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3073 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3074 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3075 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3077 channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
3078 min_bits = bits[channel_assignment];
3079 for(ca = 1; ca <= 3; ca++) {
3080 if(bits[ca] < min_bits) {
3081 min_bits = bits[ca];
3082 channel_assignment = (FLAC__ChannelAssignment)ca;
3087 frame_header.channel_assignment = channel_assignment;
3089 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3090 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3094 switch(channel_assignment) {
3095 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3096 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3097 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3099 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3100 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3101 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3103 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3104 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3105 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3107 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3108 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3109 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3115 switch(channel_assignment) {
3116 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3117 left_bps = encoder->private_->subframe_bps [0];
3118 right_bps = encoder->private_->subframe_bps [1];
3120 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3121 left_bps = encoder->private_->subframe_bps [0];
3122 right_bps = encoder->private_->subframe_bps_mid_side[1];
3124 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3125 left_bps = encoder->private_->subframe_bps_mid_side[1];
3126 right_bps = encoder->private_->subframe_bps [1];
3128 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3129 left_bps = encoder->private_->subframe_bps_mid_side[0];
3130 right_bps = encoder->private_->subframe_bps_mid_side[1];
3136 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3137 if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
3139 if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
3143 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3144 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3148 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3149 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)) {
3150 /* the above function sets the state for us in case of an error */
3156 if(encoder->protected_->loose_mid_side_stereo) {
3157 encoder->private_->loose_mid_side_stereo_frame_count++;
3158 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3159 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3162 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3167 FLAC__bool process_subframe_(
3168 FLAC__StreamEncoder *encoder,
3169 unsigned min_partition_order,
3170 unsigned max_partition_order,
3171 const FLAC__FrameHeader *frame_header,
3172 unsigned subframe_bps,
3173 const FLAC__int32 integer_signal[],
3174 FLAC__Subframe *subframe[2],
3175 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3176 FLAC__int32 *residual[2],
3177 unsigned *best_subframe,
3181 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3182 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3184 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3186 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3187 FLAC__double lpc_residual_bits_per_sample;
3188 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 */
3189 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3190 unsigned min_lpc_order, max_lpc_order, lpc_order;
3191 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3193 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3194 unsigned rice_parameter;
3195 unsigned _candidate_bits, _best_bits;
3196 unsigned _best_subframe;
3198 FLAC__ASSERT(frame_header->blocksize > 0);
3200 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3202 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3203 _best_bits = UINT_MAX;
3205 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3207 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3208 unsigned signal_is_constant = false;
3209 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);
3210 /* check for constant subframe */
3212 !encoder->private_->disable_constant_subframes &&
3213 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3214 fixed_residual_bits_per_sample[1] == 0.0
3216 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3219 /* the above means it's possible all samples are the same value; now double-check it: */
3221 signal_is_constant = true;
3222 for(i = 1; i < frame_header->blocksize; i++) {
3223 if(integer_signal[0] != integer_signal[i]) {
3224 signal_is_constant = false;
3229 if(signal_is_constant) {
3230 _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
3231 if(_candidate_bits < _best_bits) {
3232 _best_subframe = !_best_subframe;
3233 _best_bits = _candidate_bits;
3237 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3239 if(encoder->protected_->do_exhaustive_model_search) {
3240 min_fixed_order = 0;
3241 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3244 min_fixed_order = max_fixed_order = guess_fixed_order;
3246 if(max_fixed_order >= frame_header->blocksize)
3247 max_fixed_order = frame_header->blocksize - 1;
3248 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3249 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3250 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3251 continue; /* don't even try */
3252 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 */
3254 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3255 continue; /* don't even try */
3256 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 */
3258 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3259 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3260 #ifdef DEBUG_VERBOSE
3261 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3263 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3266 evaluate_fixed_subframe_(
3269 residual[!_best_subframe],
3270 encoder->private_->abs_residual_partition_sums,
3271 encoder->private_->raw_bits_per_partition,
3272 frame_header->blocksize,
3276 min_partition_order,
3277 max_partition_order,
3278 encoder->protected_->do_escape_coding,
3279 encoder->protected_->rice_parameter_search_dist,
3280 subframe[!_best_subframe],
3281 partitioned_rice_contents[!_best_subframe]
3283 if(_candidate_bits < _best_bits) {
3284 _best_subframe = !_best_subframe;
3285 _best_bits = _candidate_bits;
3290 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3292 if(encoder->protected_->max_lpc_order > 0) {
3293 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3294 max_lpc_order = frame_header->blocksize-1;
3296 max_lpc_order = encoder->protected_->max_lpc_order;
3297 if(max_lpc_order > 0) {
3299 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3300 FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3301 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3302 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3303 if(autoc[0] != 0.0) {
3304 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3305 if(encoder->protected_->do_exhaustive_model_search) {
3309 const unsigned guess_lpc_order =
3310 FLAC__lpc_compute_best_order(
3313 frame_header->blocksize,
3315 encoder->protected_->do_qlp_coeff_prec_search?
3316 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3317 encoder->protected_->qlp_coeff_precision
3320 min_lpc_order = max_lpc_order = guess_lpc_order;
3322 if(max_lpc_order >= frame_header->blocksize)
3323 max_lpc_order = frame_header->blocksize - 1;
3324 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3325 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3326 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3327 continue; /* don't even try */
3328 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3329 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3330 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3331 #ifdef DEBUG_VERBOSE
3332 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3334 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3336 if(encoder->protected_->do_qlp_coeff_prec_search) {
3337 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3338 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3339 if(subframe_bps <= 17) {
3340 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3341 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3344 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3347 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3349 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3351 evaluate_lpc_subframe_(
3354 residual[!_best_subframe],
3355 encoder->private_->abs_residual_partition_sums,
3356 encoder->private_->raw_bits_per_partition,
3357 encoder->private_->lp_coeff[lpc_order-1],
3358 frame_header->blocksize,
3361 qlp_coeff_precision,
3363 min_partition_order,
3364 max_partition_order,
3365 encoder->protected_->do_escape_coding,
3366 encoder->protected_->rice_parameter_search_dist,
3367 subframe[!_best_subframe],
3368 partitioned_rice_contents[!_best_subframe]
3370 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3371 if(_candidate_bits < _best_bits) {
3372 _best_subframe = !_best_subframe;
3373 _best_bits = _candidate_bits;
3382 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3386 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3387 if(_best_bits == UINT_MAX) {
3388 FLAC__ASSERT(_best_subframe == 0);
3389 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3392 *best_subframe = _best_subframe;
3393 *best_bits = _best_bits;
3398 FLAC__bool add_subframe_(
3399 FLAC__StreamEncoder *encoder,
3401 unsigned subframe_bps,
3402 const FLAC__Subframe *subframe,
3403 FLAC__BitWriter *frame
3406 switch(subframe->type) {
3407 case FLAC__SUBFRAME_TYPE_CONSTANT:
3408 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3409 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3413 case FLAC__SUBFRAME_TYPE_FIXED:
3414 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3415 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3419 case FLAC__SUBFRAME_TYPE_LPC:
3420 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3421 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3425 case FLAC__SUBFRAME_TYPE_VERBATIM:
3426 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3427 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3438 #define SPOTCHECK_ESTIMATE 0
3439 #if SPOTCHECK_ESTIMATE
3440 static void spotcheck_subframe_estimate_(
3441 FLAC__StreamEncoder *encoder,
3443 unsigned subframe_bps,
3444 const FLAC__Subframe *subframe,
3449 FLAC__BitWriter *frame = FLAC__bitwriter_new();
3451 fprintf(stderr, "EST: can't allocate frame\n");
3454 if(!FLAC__bitwriter_init(frame)) {
3455 fprintf(stderr, "EST: can't init frame\n");
3458 ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
3461 const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
3462 if(estimate != actual)
3463 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);
3465 FLAC__bitwriter_delete(frame);
3469 unsigned evaluate_constant_subframe_(
3470 FLAC__StreamEncoder *encoder,
3471 const FLAC__int32 signal,
3473 unsigned subframe_bps,
3474 FLAC__Subframe *subframe
3478 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3479 subframe->data.constant.value = signal;
3481 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
3483 #if SPOTCHECK_ESTIMATE
3484 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3486 (void)encoder, (void)blocksize;
3492 unsigned evaluate_fixed_subframe_(
3493 FLAC__StreamEncoder *encoder,
3494 const FLAC__int32 signal[],
3495 FLAC__int32 residual[],
3496 FLAC__uint64 abs_residual_partition_sums[],
3497 unsigned raw_bits_per_partition[],
3499 unsigned subframe_bps,
3501 unsigned rice_parameter,
3502 unsigned min_partition_order,
3503 unsigned max_partition_order,
3504 FLAC__bool do_escape_coding,
3505 unsigned rice_parameter_search_dist,
3506 FLAC__Subframe *subframe,
3507 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3510 unsigned i, residual_bits, estimate;
3511 const unsigned residual_samples = blocksize - order;
3513 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3515 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3517 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3518 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3519 subframe->data.fixed.residual = residual;
3522 find_best_partition_order_(
3525 abs_residual_partition_sums,
3526 raw_bits_per_partition,
3530 min_partition_order,
3531 max_partition_order,
3534 rice_parameter_search_dist,
3535 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3538 subframe->data.fixed.order = order;
3539 for(i = 0; i < order; i++)
3540 subframe->data.fixed.warmup[i] = signal[i];
3542 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
3544 #if SPOTCHECK_ESTIMATE
3545 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3551 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3552 unsigned evaluate_lpc_subframe_(
3553 FLAC__StreamEncoder *encoder,
3554 const FLAC__int32 signal[],
3555 FLAC__int32 residual[],
3556 FLAC__uint64 abs_residual_partition_sums[],
3557 unsigned raw_bits_per_partition[],
3558 const FLAC__real lp_coeff[],
3560 unsigned subframe_bps,
3562 unsigned qlp_coeff_precision,
3563 unsigned rice_parameter,
3564 unsigned min_partition_order,
3565 unsigned max_partition_order,
3566 FLAC__bool do_escape_coding,
3567 unsigned rice_parameter_search_dist,
3568 FLAC__Subframe *subframe,
3569 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3572 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3573 unsigned i, residual_bits, estimate;
3574 int quantization, ret;
3575 const unsigned residual_samples = blocksize - order;
3577 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3578 if(subframe_bps <= 16) {
3579 FLAC__ASSERT(order > 0);
3580 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3581 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3584 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3586 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3588 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3589 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3590 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3592 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3594 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3596 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3598 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3599 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3600 subframe->data.lpc.residual = residual;
3603 find_best_partition_order_(
3606 abs_residual_partition_sums,
3607 raw_bits_per_partition,
3611 min_partition_order,
3612 max_partition_order,
3615 rice_parameter_search_dist,
3616 &subframe->data.lpc.entropy_coding_method.data.partitioned_rice
3619 subframe->data.lpc.order = order;
3620 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3621 subframe->data.lpc.quantization_level = quantization;
3622 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3623 for(i = 0; i < order; i++)
3624 subframe->data.lpc.warmup[i] = signal[i];
3626 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits;
3628 #if SPOTCHECK_ESTIMATE
3629 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3636 unsigned evaluate_verbatim_subframe_(
3637 FLAC__StreamEncoder *encoder,
3638 const FLAC__int32 signal[],
3640 unsigned subframe_bps,
3641 FLAC__Subframe *subframe
3646 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3648 subframe->data.verbatim.data = signal;
3650 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
3652 #if SPOTCHECK_ESTIMATE
3653 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3661 unsigned find_best_partition_order_(
3662 FLAC__StreamEncoderPrivate *private_,
3663 const FLAC__int32 residual[],
3664 FLAC__uint64 abs_residual_partition_sums[],
3665 unsigned raw_bits_per_partition[],
3666 unsigned residual_samples,
3667 unsigned predictor_order,
3668 unsigned rice_parameter,
3669 unsigned min_partition_order,
3670 unsigned max_partition_order,
3672 FLAC__bool do_escape_coding,
3673 unsigned rice_parameter_search_dist,
3674 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
3677 unsigned residual_bits, best_residual_bits = 0;
3678 unsigned best_parameters_index = 0;
3679 const unsigned blocksize = residual_samples + predictor_order;
3681 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3682 min_partition_order = min(min_partition_order, max_partition_order);
3684 precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps);
3686 if(do_escape_coding)
3687 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3690 int partition_order;
3693 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3695 set_partitioned_rice_(
3696 #ifdef EXACT_RICE_BITS_CALCULATION
3699 abs_residual_partition_sums+sum,
3700 raw_bits_per_partition+sum,
3704 rice_parameter_search_dist,
3705 (unsigned)partition_order,
3707 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3712 FLAC__ASSERT(best_residual_bits != 0);
3715 sum += 1u << partition_order;
3716 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3717 best_residual_bits = residual_bits;
3718 best_parameters_index = !best_parameters_index;
3719 best_partitioned_rice->order = partition_order;
3725 * We are allowed to de-const the pointer based on our special knowledge;
3726 * it is const to the outside world.
3729 FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents;
3730 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order));
3731 memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3732 memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3735 return best_residual_bits;
3738 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3739 extern void precompute_partition_info_sums_32bit_asm_ia32_(
3740 const FLAC__int32 residual[],
3741 FLAC__uint64 abs_residual_partition_sums[],
3743 unsigned predictor_order,
3744 unsigned min_partition_order,
3745 unsigned max_partition_order
3749 void precompute_partition_info_sums_(
3750 const FLAC__int32 residual[],
3751 FLAC__uint64 abs_residual_partition_sums[],
3752 unsigned residual_samples,
3753 unsigned predictor_order,
3754 unsigned min_partition_order,
3755 unsigned max_partition_order,
3759 const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order;
3760 unsigned partitions = 1u << max_partition_order;
3762 FLAC__ASSERT(default_partition_samples > predictor_order);
3764 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3765 /* slightly pessimistic but still catches all common cases */
3766 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3767 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3768 precompute_partition_info_sums_32bit_asm_ia32_(residual, abs_residual_partition_sums, residual_samples + predictor_order, predictor_order, min_partition_order, max_partition_order);
3773 /* first do max_partition_order */
3775 unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order);
3776 /* slightly pessimistic but still catches all common cases */
3777 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3778 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3779 FLAC__uint32 abs_residual_partition_sum;
3781 for(partition = residual_sample = 0; partition < partitions; partition++) {
3782 end += default_partition_samples;
3783 abs_residual_partition_sum = 0;
3784 for( ; residual_sample < end; residual_sample++)
3785 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3786 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3789 else { /* have to pessimistically use 64 bits for accumulator */
3790 FLAC__uint64 abs_residual_partition_sum;
3792 for(partition = residual_sample = 0; partition < partitions; partition++) {
3793 end += default_partition_samples;
3794 abs_residual_partition_sum = 0;
3795 for( ; residual_sample < end; residual_sample++)
3796 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3797 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3802 /* now merge partitions for lower orders */
3804 unsigned from_partition = 0, to_partition = partitions;
3805 int partition_order;
3806 for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) {
3809 for(i = 0; i < partitions; i++) {
3810 abs_residual_partition_sums[to_partition++] =
3811 abs_residual_partition_sums[from_partition ] +
3812 abs_residual_partition_sums[from_partition+1];
3813 from_partition += 2;
3819 void precompute_partition_info_escapes_(
3820 const FLAC__int32 residual[],
3821 unsigned raw_bits_per_partition[],
3822 unsigned residual_samples,
3823 unsigned predictor_order,
3824 unsigned min_partition_order,
3825 unsigned max_partition_order
3828 int partition_order;
3829 unsigned from_partition, to_partition = 0;
3830 const unsigned blocksize = residual_samples + predictor_order;
3832 /* first do max_partition_order */
3833 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3836 unsigned partition, partition_sample, partition_samples, residual_sample;
3837 const unsigned partitions = 1u << partition_order;
3838 const unsigned default_partition_samples = blocksize >> partition_order;
3840 FLAC__ASSERT(default_partition_samples > predictor_order);
3842 for(partition = residual_sample = 0; partition < partitions; partition++) {
3843 partition_samples = default_partition_samples;
3845 partition_samples -= predictor_order;
3847 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3848 r = residual[residual_sample++];
3849 /* OPT: maybe faster: rmax |= r ^ (r>>31) */
3855 /* now we know all residual values are in the range [-rmax-1,rmax] */
3856 raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1;
3858 to_partition = partitions;
3859 break; /*@@@ yuck, should remove the 'for' loop instead */
3862 /* now merge partitions for lower orders */
3863 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3866 const unsigned partitions = 1u << partition_order;
3867 for(i = 0; i < partitions; i++) {
3868 m = raw_bits_per_partition[from_partition];
3870 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
3877 #ifdef EXACT_RICE_BITS_CALCULATION
3878 static FLaC__INLINE unsigned count_rice_bits_in_partition_(
3879 const unsigned rice_parameter,
3880 const unsigned partition_samples,
3881 const FLAC__int32 *residual
3884 unsigned i, partition_bits =
3885 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
3886 (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
3888 for(i = 0; i < partition_samples; i++)
3889 partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
3890 return partition_bits;
3893 static FLaC__INLINE unsigned count_rice_bits_in_partition_(
3894 const unsigned rice_parameter,
3895 const unsigned partition_samples,
3896 const FLAC__uint64 abs_residual_partition_sum
3900 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
3901 (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
3904 (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
3905 : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
3907 - (partition_samples >> 1)
3908 /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
3909 * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1)
3910 * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
3911 * So the subtraction term tries to guess how many extra bits were contributed.
3912 * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
3918 FLAC__bool set_partitioned_rice_(
3919 #ifdef EXACT_RICE_BITS_CALCULATION
3920 const FLAC__int32 residual[],
3922 const FLAC__uint64 abs_residual_partition_sums[],
3923 const unsigned raw_bits_per_partition[],
3924 const unsigned residual_samples,
3925 const unsigned predictor_order,
3926 const unsigned suggested_rice_parameter,
3927 const unsigned rice_parameter_search_dist,
3928 const unsigned partition_order,
3929 const FLAC__bool search_for_escapes,
3930 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3934 unsigned rice_parameter, partition_bits;
3935 unsigned best_partition_bits, best_rice_parameter = 0;
3936 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3937 unsigned *parameters, *raw_bits;
3938 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3939 unsigned min_rice_parameter, max_rice_parameter;
3941 (void)rice_parameter_search_dist;
3944 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
3946 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
3947 parameters = partitioned_rice_contents->parameters;
3948 raw_bits = partitioned_rice_contents->raw_bits;
3950 if(partition_order == 0) {
3951 best_partition_bits = (unsigned)(-1);
3952 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3953 if(rice_parameter_search_dist) {
3954 if(suggested_rice_parameter < rice_parameter_search_dist)
3955 min_rice_parameter = 0;
3957 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
3958 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
3959 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3960 #ifdef DEBUG_VERBOSE
3961 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3963 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3967 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
3969 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3971 rice_parameter = suggested_rice_parameter;
3973 #ifdef EXACT_RICE_BITS_CALCULATION
3974 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual);
3976 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]);
3978 if(partition_bits < best_partition_bits) {
3979 best_rice_parameter = rice_parameter;
3980 best_partition_bits = partition_bits;
3982 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3985 if(search_for_escapes) {
3986 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;
3987 if(partition_bits <= best_partition_bits) {
3988 raw_bits[0] = raw_bits_per_partition[0];
3989 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
3990 best_partition_bits = partition_bits;
3993 parameters[0] = best_rice_parameter;
3994 bits_ += best_partition_bits;
3997 unsigned partition, residual_sample;
3998 unsigned partition_samples;
3999 FLAC__uint64 mean, k;
4000 const unsigned partitions = 1u << partition_order;
4001 for(partition = residual_sample = 0; partition < partitions; partition++) {
4002 partition_samples = (residual_samples+predictor_order) >> partition_order;
4003 if(partition == 0) {
4004 if(partition_samples <= predictor_order)
4007 partition_samples -= predictor_order;
4009 mean = abs_residual_partition_sums[partition];
4010 /* we are basically calculating the size in bits of the
4011 * average residual magnitude in the partition:
4012 * rice_parameter = floor(log2(mean/partition_samples))
4013 * 'mean' is not a good name for the variable, it is
4014 * actually the sum of magnitudes of all residual values
4015 * in the partition, so the actual mean is
4016 * mean/partition_samples
4018 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4020 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4021 #ifdef DEBUG_VERBOSE
4022 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4024 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4027 best_partition_bits = (unsigned)(-1);
4028 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4029 if(rice_parameter_search_dist) {
4030 if(rice_parameter < rice_parameter_search_dist)
4031 min_rice_parameter = 0;
4033 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4034 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4035 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4036 #ifdef DEBUG_VERBOSE
4037 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4039 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4043 min_rice_parameter = max_rice_parameter = rice_parameter;
4045 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4047 #ifdef EXACT_RICE_BITS_CALCULATION
4048 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample);
4050 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]);
4052 if(partition_bits < best_partition_bits) {
4053 best_rice_parameter = rice_parameter;
4054 best_partition_bits = partition_bits;
4056 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4059 if(search_for_escapes) {
4060 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;
4061 if(partition_bits <= best_partition_bits) {
4062 raw_bits[partition] = raw_bits_per_partition[partition];
4063 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4064 best_partition_bits = partition_bits;
4067 parameters[partition] = best_rice_parameter;
4068 bits_ += best_partition_bits;
4069 residual_sample += partition_samples;
4077 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4082 for(i = 0; i < samples && !(x&1); i++)
4089 for(shift = 0; !(x&1); shift++)
4094 for(i = 0; i < samples; i++)
4095 signal[i] >>= shift;
4101 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4105 for(channel = 0; channel < channels; channel++)
4106 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4108 fifo->tail += wide_samples;
4110 FLAC__ASSERT(fifo->tail <= fifo->size);
4113 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4116 unsigned sample, wide_sample;
4117 unsigned tail = fifo->tail;
4119 sample = input_offset * channels;
4120 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4121 for(channel = 0; channel < channels; channel++)
4122 fifo->data[channel][tail] = input[sample++];
4127 FLAC__ASSERT(fifo->tail <= fifo->size);
4130 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4132 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4133 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4136 if(encoder->private_->verify.needs_magic_hack) {
4137 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4138 *bytes = FLAC__STREAM_SYNC_LENGTH;
4139 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4140 encoder->private_->verify.needs_magic_hack = false;
4143 if(encoded_bytes == 0) {
4145 * If we get here, a FIFO underflow has occurred,
4146 * which means there is a bug somewhere.
4149 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4151 else if(encoded_bytes < *bytes)
4152 *bytes = encoded_bytes;
4153 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4154 encoder->private_->verify.output.data += *bytes;
4155 encoder->private_->verify.output.bytes -= *bytes;
4158 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4161 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4163 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4165 const unsigned channels = frame->header.channels;
4166 const unsigned blocksize = frame->header.blocksize;
4167 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4171 for(channel = 0; channel < channels; channel++) {
4172 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4173 unsigned i, sample = 0;
4174 FLAC__int32 expect = 0, got = 0;
4176 for(i = 0; i < blocksize; i++) {
4177 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4179 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4180 got = (FLAC__int32)buffer[channel][i];
4184 FLAC__ASSERT(i < blocksize);
4185 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4186 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4187 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4188 encoder->private_->verify.error_stats.channel = channel;
4189 encoder->private_->verify.error_stats.sample = sample;
4190 encoder->private_->verify.error_stats.expected = expect;
4191 encoder->private_->verify.error_stats.got = got;
4192 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4193 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4196 /* dequeue the frame from the fifo */
4197 encoder->private_->verify.input_fifo.tail -= blocksize;
4198 FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
4199 for(channel = 0; channel < channels; channel++)
4200 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]));
4201 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4204 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4206 (void)decoder, (void)metadata, (void)client_data;
4209 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4211 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4212 (void)decoder, (void)status;
4213 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4216 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4220 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4222 if (feof(encoder->private_->file))
4223 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4224 else if (ferror(encoder->private_->file))
4225 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4227 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4230 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4234 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
4235 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4237 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4240 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4246 offset = ftello(encoder->private_->file);
4249 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4252 *absolute_byte_offset = (FLAC__uint64)offset;
4253 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4257 #ifdef FLAC__VALGRIND_TESTING
4258 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4260 size_t ret = fwrite(ptr, size, nmemb, stream);
4266 #define local__fwrite fwrite
4269 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4271 (void)client_data, (void)current_frame;
4273 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4274 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4276 /* We would like to be able to use 'samples > 0' in the
4277 * clause here but currently because of the nature of our
4278 * Ogg writing implementation, 'samples' is always 0 (see
4279 * ogg_encoder_aspect.c). The downside is extra progress
4282 encoder->private_->is_ogg? true :
4287 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4288 * because at this point in the callback chain, the stats
4289 * have not been updated. Only after we return and control
4290 * gets back to write_frame_() are the stats updated
4292 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);
4294 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4297 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4301 * This will forcibly set stdout to binary mode (for OSes that require it)
4303 FILE *get_binary_stdout_(void)
4305 /* if something breaks here it is probably due to the presence or
4306 * absence of an underscore before the identifiers 'setmode',
4307 * 'fileno', and/or 'O_BINARY'; check your system header files.
4309 #if defined _MSC_VER || defined __MINGW32__
4310 _setmode(_fileno(stdout), _O_BINARY);
4311 #elif defined __CYGWIN__
4312 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4313 setmode(_fileno(stdout), _O_BINARY);
4314 #elif defined __EMX__
4315 setmode(fileno(stdout), O_BINARY);