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"
77 #define min(x,y) ((x)<(y)?(x):(y))
82 #define max(x,y) ((x)>(y)?(x):(y))
84 /* Exact Rice codeword length calculation is off by default. The simple
85 * (and fast) estimation (of how many bits a residual value will be
86 * encoded with) in this encoder is very good, almost always yielding
87 * compression within 0.1% of exact calculation.
89 #undef EXACT_RICE_BITS_CALCULATION
90 /* Rice parameter searching is off by default. The simple (and fast)
91 * parameter estimation in this encoder is very good, almost always
92 * yielding compression within 0.1% of the optimal parameters.
94 #undef ENABLE_RICE_PARAMETER_SEARCH
96 /*@@@@@@ for 1.1.4-alpha1*/
97 #define FLAC__MANDATORY_VERIFY_WHILE_ENCODING
100 FLAC__int32 *data[FLAC__MAX_CHANNELS];
101 unsigned size; /* of each data[] in samples */
106 const FLAC__byte *data;
112 ENCODER_IN_MAGIC = 0,
113 ENCODER_IN_METADATA = 1,
117 static struct CompressionLevels {
118 FLAC__bool do_mid_side_stereo;
119 FLAC__bool loose_mid_side_stereo;
120 unsigned max_lpc_order;
121 unsigned qlp_coeff_precision;
122 FLAC__bool do_qlp_coeff_prec_search;
123 FLAC__bool do_escape_coding;
124 FLAC__bool do_exhaustive_model_search;
125 unsigned min_residual_partition_order;
126 unsigned max_residual_partition_order;
127 unsigned rice_parameter_search_dist;
128 } compression_levels_[] = {
129 { false, false, 0, 0, false, false, false, 2, 2, 0 },
130 { true , true , 0, 0, false, false, false, 2, 2, 0 },
131 { true , false, 0, 0, false, false, false, 0, 3, 0 },
132 { false, false, 6, 0, false, false, false, 3, 3, 0 },
133 { true , true , 8, 0, false, false, false, 3, 3, 0 },
134 { true , false, 8, 0, false, false, false, 3, 3, 0 },
135 { true , false, 8, 0, false, false, false, 0, 4, 0 },
136 { true , false, 8, 0, false, false, true , 0, 6, 0 },
137 { true , false, 12, 0, false, false, true , 0, 6, 0 }
141 /***********************************************************************
143 * Private class method prototypes
145 ***********************************************************************/
147 static void set_defaults_(FLAC__StreamEncoder *encoder);
148 static void free_(FLAC__StreamEncoder *encoder);
149 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
150 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
151 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
152 static void update_metadata_(const FLAC__StreamEncoder *encoder);
154 static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
156 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
157 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
159 static FLAC__bool process_subframe_(
160 FLAC__StreamEncoder *encoder,
161 unsigned min_partition_order,
162 unsigned max_partition_order,
163 const FLAC__FrameHeader *frame_header,
164 unsigned subframe_bps,
165 const FLAC__int32 integer_signal[],
166 #ifndef FLAC__INTEGER_ONLY_LIBRARY
167 const FLAC__real real_signal[],
169 FLAC__Subframe *subframe[2],
170 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
171 FLAC__int32 *residual[2],
172 unsigned *best_subframe,
176 static FLAC__bool add_subframe_(
177 FLAC__StreamEncoder *encoder,
179 unsigned subframe_bps,
180 const FLAC__Subframe *subframe,
181 FLAC__BitWriter *frame
184 static unsigned evaluate_constant_subframe_(
185 FLAC__StreamEncoder *encoder,
186 const FLAC__int32 signal,
188 unsigned subframe_bps,
189 FLAC__Subframe *subframe
192 static unsigned evaluate_fixed_subframe_(
193 FLAC__StreamEncoder *encoder,
194 const FLAC__int32 signal[],
195 FLAC__int32 residual[],
196 FLAC__uint64 abs_residual_partition_sums[],
197 unsigned raw_bits_per_partition[],
199 unsigned subframe_bps,
201 unsigned rice_parameter,
202 unsigned min_partition_order,
203 unsigned max_partition_order,
204 FLAC__bool do_escape_coding,
205 unsigned rice_parameter_search_dist,
206 FLAC__Subframe *subframe,
207 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
210 #ifndef FLAC__INTEGER_ONLY_LIBRARY
211 static unsigned evaluate_lpc_subframe_(
212 FLAC__StreamEncoder *encoder,
213 const FLAC__int32 signal[],
214 FLAC__int32 residual[],
215 FLAC__uint64 abs_residual_partition_sums[],
216 unsigned raw_bits_per_partition[],
217 const FLAC__real lp_coeff[],
219 unsigned subframe_bps,
221 unsigned qlp_coeff_precision,
222 unsigned rice_parameter,
223 unsigned min_partition_order,
224 unsigned max_partition_order,
225 FLAC__bool do_escape_coding,
226 unsigned rice_parameter_search_dist,
227 FLAC__Subframe *subframe,
228 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
232 static unsigned evaluate_verbatim_subframe_(
233 FLAC__StreamEncoder *encoder,
234 const FLAC__int32 signal[],
236 unsigned subframe_bps,
237 FLAC__Subframe *subframe
240 static unsigned find_best_partition_order_(
241 struct FLAC__StreamEncoderPrivate *private_,
242 const FLAC__int32 residual[],
243 FLAC__uint64 abs_residual_partition_sums[],
244 unsigned raw_bits_per_partition[],
245 unsigned residual_samples,
246 unsigned predictor_order,
247 unsigned rice_parameter,
248 unsigned min_partition_order,
249 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
264 static void precompute_partition_info_escapes_(
265 const FLAC__int32 residual[],
266 unsigned raw_bits_per_partition[],
267 unsigned residual_samples,
268 unsigned predictor_order,
269 unsigned min_partition_order,
270 unsigned max_partition_order
273 static FLAC__bool set_partitioned_rice_(
274 #ifdef EXACT_RICE_BITS_CALCULATION
275 const FLAC__int32 residual[],
277 const FLAC__uint64 abs_residual_partition_sums[],
278 const unsigned raw_bits_per_partition[],
279 const unsigned residual_samples,
280 const unsigned predictor_order,
281 const unsigned suggested_rice_parameter,
282 const unsigned rice_parameter_search_dist,
283 const unsigned partition_order,
284 const FLAC__bool search_for_escapes,
285 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
289 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
291 /* verify-related routines: */
292 static void append_to_verify_fifo_(
293 verify_input_fifo *fifo,
294 const FLAC__int32 * const input[],
295 unsigned input_offset,
297 unsigned wide_samples
300 static void append_to_verify_fifo_interleaved_(
301 verify_input_fifo *fifo,
302 const FLAC__int32 input[],
303 unsigned input_offset,
305 unsigned wide_samples
308 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
309 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
310 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
311 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
313 static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
314 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
315 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
316 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);
317 static FILE *get_binary_stdout_(void);
320 /***********************************************************************
324 ***********************************************************************/
326 typedef struct FLAC__StreamEncoderPrivate {
327 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
328 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
329 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
330 #ifndef FLAC__INTEGER_ONLY_LIBRARY
331 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* the floating-point version of the input signal */
332 FLAC__real *real_signal_mid_side[2]; /* the floating-point version of the mid-side input signal (stereo only) */
333 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
334 FLAC__real *windowed_signal; /* the real_signal[] * current window[] */
336 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
337 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
338 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
339 FLAC__int32 *residual_workspace_mid_side[2][2];
340 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
341 FLAC__Subframe subframe_workspace_mid_side[2][2];
342 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
343 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
344 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
345 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
346 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
347 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
348 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
349 unsigned best_subframe_mid_side[2];
350 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
351 unsigned best_subframe_bits_mid_side[2];
352 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
353 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
354 FLAC__BitWriter *frame; /* the current frame being worked on */
355 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
356 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
357 FLAC__ChannelAssignment last_channel_assignment;
358 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
359 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
360 unsigned current_sample_number;
361 unsigned current_frame_number;
362 struct FLAC__MD5Context md5context;
363 FLAC__CPUInfo cpuinfo;
364 #ifndef FLAC__INTEGER_ONLY_LIBRARY
365 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
367 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
369 #ifndef FLAC__INTEGER_ONLY_LIBRARY
370 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
371 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[]);
372 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[]);
373 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[]);
375 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
376 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
377 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
378 FLAC__bool disable_constant_subframes;
379 FLAC__bool disable_fixed_subframes;
380 FLAC__bool disable_verbatim_subframes;
384 FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
385 FLAC__StreamEncoderSeekCallback seek_callback;
386 FLAC__StreamEncoderTellCallback tell_callback;
387 FLAC__StreamEncoderWriteCallback write_callback;
388 FLAC__StreamEncoderMetadataCallback metadata_callback;
389 FLAC__StreamEncoderProgressCallback progress_callback;
391 unsigned first_seekpoint_to_check;
392 FILE *file; /* only used when encoding to a file */
393 FLAC__uint64 bytes_written;
394 FLAC__uint64 samples_written;
395 unsigned frames_written;
396 unsigned total_frames_estimate;
397 /* unaligned (original) pointers to allocated data */
398 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
399 FLAC__int32 *integer_signal_mid_side_unaligned[2];
400 #ifndef FLAC__INTEGER_ONLY_LIBRARY
401 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS];
402 FLAC__real *real_signal_mid_side_unaligned[2];
403 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
404 FLAC__real *windowed_signal_unaligned;
406 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
407 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
408 FLAC__uint64 *abs_residual_partition_sums_unaligned;
409 unsigned *raw_bits_per_partition_unaligned;
411 * These fields have been moved here from private function local
412 * declarations merely to save stack space during encoding.
414 #ifndef FLAC__INTEGER_ONLY_LIBRARY
415 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
417 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
419 * The data for the verify section
422 FLAC__StreamDecoder *decoder;
423 EncoderStateHint state_hint;
424 FLAC__bool needs_magic_hack;
425 verify_input_fifo input_fifo;
426 verify_output output;
428 FLAC__uint64 absolute_sample;
429 unsigned frame_number;
432 FLAC__int32 expected;
436 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
437 } FLAC__StreamEncoderPrivate;
439 /***********************************************************************
441 * Public static class data
443 ***********************************************************************/
445 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
446 "FLAC__STREAM_ENCODER_OK",
447 "FLAC__STREAM_ENCODER_UNINITIALIZED",
448 "FLAC__STREAM_ENCODER_OGG_ERROR",
449 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
450 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
451 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
452 "FLAC__STREAM_ENCODER_IO_ERROR",
453 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
454 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
457 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
458 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
459 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
460 "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
461 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
462 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
463 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
464 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
465 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
466 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
467 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
468 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
469 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
470 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
471 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
474 FLAC_API const char * const FLAC__treamEncoderReadStatusString[] = {
475 "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
476 "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
477 "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
478 "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
481 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
482 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
483 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
486 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
487 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
488 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
489 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
492 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
493 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
494 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
495 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
498 /* Number of samples that will be overread to watch for end of stream. By
499 * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
500 * always try to read blocksize+1 samples before encoding a block, so that
501 * even if the stream has a total sample count that is an integral multiple
502 * of the blocksize, we will still notice when we are encoding the last
503 * block. This is needed, for example, to correctly set the end-of-stream
504 * marker in Ogg FLAC.
506 * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
507 * not really any reason to change it.
509 static const unsigned OVERREAD_ = 1;
511 /***********************************************************************
513 * Class constructor/destructor
516 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void)
518 FLAC__StreamEncoder *encoder;
521 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
523 encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
528 encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
529 if(encoder->protected_ == 0) {
534 encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
535 if(encoder->private_ == 0) {
536 free(encoder->protected_);
541 encoder->private_->frame = FLAC__bitwriter_new();
542 if(encoder->private_->frame == 0) {
543 free(encoder->private_);
544 free(encoder->protected_);
549 encoder->private_->file = 0;
551 set_defaults_(encoder);
553 encoder->private_->is_being_deleted = false;
555 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
556 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
557 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
559 for(i = 0; i < 2; i++) {
560 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
561 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
563 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
564 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
565 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
567 for(i = 0; i < 2; i++) {
568 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
569 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
572 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
573 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
574 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
576 for(i = 0; i < 2; i++) {
577 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
578 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
580 for(i = 0; i < 2; i++)
581 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
583 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
588 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
592 FLAC__ASSERT(0 != encoder);
593 FLAC__ASSERT(0 != encoder->protected_);
594 FLAC__ASSERT(0 != encoder->private_);
595 FLAC__ASSERT(0 != encoder->private_->frame);
597 encoder->private_->is_being_deleted = true;
599 (void)FLAC__stream_encoder_finish(encoder);
601 if(0 != encoder->private_->verify.decoder)
602 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
604 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
605 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
606 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
608 for(i = 0; i < 2; i++) {
609 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
610 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
612 for(i = 0; i < 2; i++)
613 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
615 FLAC__bitwriter_delete(encoder->private_->frame);
616 free(encoder->private_);
617 free(encoder->protected_);
621 /***********************************************************************
623 * Public class methods
625 ***********************************************************************/
627 static FLAC__StreamEncoderInitStatus init_stream_internal_(
628 FLAC__StreamEncoder *encoder,
629 FLAC__StreamEncoderReadCallback read_callback,
630 FLAC__StreamEncoderWriteCallback write_callback,
631 FLAC__StreamEncoderSeekCallback seek_callback,
632 FLAC__StreamEncoderTellCallback tell_callback,
633 FLAC__StreamEncoderMetadataCallback metadata_callback,
639 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
641 FLAC__ASSERT(0 != encoder);
643 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
644 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
648 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
651 if(0 == write_callback || (seek_callback && 0 == tell_callback))
652 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
654 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
655 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
657 if(encoder->protected_->channels != 2) {
658 encoder->protected_->do_mid_side_stereo = false;
659 encoder->protected_->loose_mid_side_stereo = false;
661 else if(!encoder->protected_->do_mid_side_stereo)
662 encoder->protected_->loose_mid_side_stereo = false;
664 if(encoder->protected_->bits_per_sample >= 32)
665 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
667 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
668 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
670 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
671 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
673 if(encoder->protected_->blocksize == 0) {
674 if(encoder->protected_->max_lpc_order == 0)
675 encoder->protected_->blocksize = 1152;
677 encoder->protected_->blocksize = 4608;
680 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
681 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
683 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
684 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
686 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
687 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
689 if(encoder->protected_->qlp_coeff_precision == 0) {
690 if(encoder->protected_->bits_per_sample < 16) {
691 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
692 /* @@@ until then we'll make a guess */
693 encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
695 else if(encoder->protected_->bits_per_sample == 16) {
696 if(encoder->protected_->blocksize <= 192)
697 encoder->protected_->qlp_coeff_precision = 7;
698 else if(encoder->protected_->blocksize <= 384)
699 encoder->protected_->qlp_coeff_precision = 8;
700 else if(encoder->protected_->blocksize <= 576)
701 encoder->protected_->qlp_coeff_precision = 9;
702 else if(encoder->protected_->blocksize <= 1152)
703 encoder->protected_->qlp_coeff_precision = 10;
704 else if(encoder->protected_->blocksize <= 2304)
705 encoder->protected_->qlp_coeff_precision = 11;
706 else if(encoder->protected_->blocksize <= 4608)
707 encoder->protected_->qlp_coeff_precision = 12;
709 encoder->protected_->qlp_coeff_precision = 13;
712 if(encoder->protected_->blocksize <= 384)
713 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
714 else if(encoder->protected_->blocksize <= 1152)
715 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
717 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
719 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
721 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
722 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
724 if(encoder->protected_->streamable_subset) {
726 encoder->protected_->blocksize != 192 &&
727 encoder->protected_->blocksize != 576 &&
728 encoder->protected_->blocksize != 1152 &&
729 encoder->protected_->blocksize != 2304 &&
730 encoder->protected_->blocksize != 4608 &&
731 encoder->protected_->blocksize != 256 &&
732 encoder->protected_->blocksize != 512 &&
733 encoder->protected_->blocksize != 1024 &&
734 encoder->protected_->blocksize != 2048 &&
735 encoder->protected_->blocksize != 4096 &&
736 encoder->protected_->blocksize != 8192 &&
737 encoder->protected_->blocksize != 16384
739 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
741 encoder->protected_->sample_rate != 8000 &&
742 encoder->protected_->sample_rate != 16000 &&
743 encoder->protected_->sample_rate != 22050 &&
744 encoder->protected_->sample_rate != 24000 &&
745 encoder->protected_->sample_rate != 32000 &&
746 encoder->protected_->sample_rate != 44100 &&
747 encoder->protected_->sample_rate != 48000 &&
748 encoder->protected_->sample_rate != 96000
750 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
752 encoder->protected_->bits_per_sample != 8 &&
753 encoder->protected_->bits_per_sample != 12 &&
754 encoder->protected_->bits_per_sample != 16 &&
755 encoder->protected_->bits_per_sample != 20 &&
756 encoder->protected_->bits_per_sample != 24
758 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
759 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
760 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
762 encoder->protected_->sample_rate <= 48000 &&
764 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
765 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
768 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
772 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
773 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
774 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
775 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
778 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
779 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
781 for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
782 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
783 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
785 encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
786 encoder->protected_->metadata[0] = vc;
792 /* keep track of any SEEKTABLE block */
793 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
795 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
796 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
797 encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
798 break; /* take only the first one */
803 /* validate metadata */
804 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
805 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
806 metadata_has_seektable = false;
807 metadata_has_vorbis_comment = false;
808 metadata_picture_has_type1 = false;
809 metadata_picture_has_type2 = false;
810 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
811 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
812 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
813 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
814 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
815 if(metadata_has_seektable) /* only one is allowed */
816 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
817 metadata_has_seektable = true;
818 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
819 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
821 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
822 if(metadata_has_vorbis_comment) /* only one is allowed */
823 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
824 metadata_has_vorbis_comment = true;
826 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
827 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
828 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
830 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
831 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
832 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
833 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
834 if(metadata_picture_has_type1) /* there should only be 1 per stream */
835 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
836 metadata_picture_has_type1 = true;
837 /* standard icon must be 32x32 pixel PNG */
839 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
841 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
842 m->data.picture.width != 32 ||
843 m->data.picture.height != 32
846 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
848 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
849 if(metadata_picture_has_type2) /* there should only be 1 per stream */
850 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
851 metadata_picture_has_type2 = true;
856 encoder->private_->input_capacity = 0;
857 for(i = 0; i < encoder->protected_->channels; i++) {
858 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
859 #ifndef FLAC__INTEGER_ONLY_LIBRARY
860 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
863 for(i = 0; i < 2; i++) {
864 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
865 #ifndef FLAC__INTEGER_ONLY_LIBRARY
866 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
869 #ifndef FLAC__INTEGER_ONLY_LIBRARY
870 for(i = 0; i < encoder->protected_->num_apodizations; i++)
871 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
872 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
874 for(i = 0; i < encoder->protected_->channels; i++) {
875 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
876 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
877 encoder->private_->best_subframe[i] = 0;
879 for(i = 0; i < 2; i++) {
880 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
881 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
882 encoder->private_->best_subframe_mid_side[i] = 0;
884 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
885 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
886 #ifndef FLAC__INTEGER_ONLY_LIBRARY
887 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
889 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
890 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
891 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
892 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
893 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
894 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
895 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);
897 if(encoder->private_->loose_mid_side_stereo_frames == 0)
898 encoder->private_->loose_mid_side_stereo_frames = 1;
899 encoder->private_->loose_mid_side_stereo_frame_count = 0;
900 encoder->private_->current_sample_number = 0;
901 encoder->private_->current_frame_number = 0;
903 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
904 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? */
905 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
908 * get the CPU info and set the function pointers
910 FLAC__cpu_info(&encoder->private_->cpuinfo);
911 /* first default to the non-asm routines */
912 #ifndef FLAC__INTEGER_ONLY_LIBRARY
913 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
915 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
916 #ifndef FLAC__INTEGER_ONLY_LIBRARY
917 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
918 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
919 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
921 /* now override with asm where appropriate */
922 #ifndef FLAC__INTEGER_ONLY_LIBRARY
923 # ifndef FLAC__NO_ASM
924 if(encoder->private_->cpuinfo.use_asm) {
925 # ifdef FLAC__CPU_IA32
926 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
927 # ifdef FLAC__HAS_NASM
929 if(encoder->private_->cpuinfo.data.ia32.sse) {
930 if(encoder->protected_->max_lpc_order < 4)
931 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
932 else if(encoder->protected_->max_lpc_order < 8)
933 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
934 else if(encoder->protected_->max_lpc_order < 12)
935 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
937 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
940 # endif /* FLAC__SSE_OS */
941 if(encoder->private_->cpuinfo.data.ia32._3dnow)
942 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
944 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
945 if(encoder->private_->cpuinfo.data.ia32.mmx) {
946 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
947 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
950 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
951 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
953 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
954 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
955 # endif /* FLAC__HAS_NASM */
956 # endif /* FLAC__CPU_IA32 */
958 # endif /* !FLAC__NO_ASM */
959 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
960 /* finally override based on wide-ness if necessary */
961 if(encoder->private_->use_wide_by_block) {
962 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
965 /* set state to OK; from here on, errors are fatal and we'll override the state then */
966 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
969 encoder->private_->is_ogg = is_ogg;
970 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
971 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
972 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
976 encoder->private_->read_callback = read_callback;
977 encoder->private_->write_callback = write_callback;
978 encoder->private_->seek_callback = seek_callback;
979 encoder->private_->tell_callback = tell_callback;
980 encoder->private_->metadata_callback = metadata_callback;
981 encoder->private_->client_data = client_data;
983 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
984 /* the above function sets the state for us in case of an error */
985 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
988 if(!FLAC__bitwriter_init(encoder->private_->frame)) {
989 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
990 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
994 * Set up the verify stuff if necessary
996 if(encoder->protected_->verify) {
998 * First, set up the fifo which will hold the
999 * original signal to compare against
1001 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
1002 for(i = 0; i < encoder->protected_->channels; i++) {
1003 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size))) {
1004 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1005 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1008 encoder->private_->verify.input_fifo.tail = 0;
1011 * Now set up a stream decoder for verification
1013 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
1014 if(0 == encoder->private_->verify.decoder) {
1015 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1016 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1019 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) {
1020 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1021 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1024 encoder->private_->verify.error_stats.absolute_sample = 0;
1025 encoder->private_->verify.error_stats.frame_number = 0;
1026 encoder->private_->verify.error_stats.channel = 0;
1027 encoder->private_->verify.error_stats.sample = 0;
1028 encoder->private_->verify.error_stats.expected = 0;
1029 encoder->private_->verify.error_stats.got = 0;
1032 * These must be done before we write any metadata, because that
1033 * calls the write_callback, which uses these values.
1035 encoder->private_->first_seekpoint_to_check = 0;
1036 encoder->private_->samples_written = 0;
1037 encoder->protected_->streaminfo_offset = 0;
1038 encoder->protected_->seektable_offset = 0;
1039 encoder->protected_->audio_offset = 0;
1042 * write the stream header
1044 if(encoder->protected_->verify)
1045 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1046 if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1047 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1048 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1050 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1051 /* the above function sets the state for us in case of an error */
1052 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1056 * write the STREAMINFO metadata block
1058 if(encoder->protected_->verify)
1059 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1060 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1061 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1062 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1063 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1064 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1065 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1066 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1067 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1068 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1069 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1070 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1071 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1072 FLAC__MD5Init(&encoder->private_->md5context);
1073 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1074 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1075 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1077 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1078 /* the above function sets the state for us in case of an error */
1079 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1083 * Now that the STREAMINFO block is written, we can init this to an
1084 * absurdly-high value...
1086 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1087 /* ... and clear this to 0 */
1088 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1091 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1092 * if not, we will write an empty one (FLAC__add_metadata_block()
1093 * automatically supplies the vendor string).
1095 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1096 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1097 * true it will have already insured that the metadata list is properly
1100 if(!metadata_has_vorbis_comment) {
1101 FLAC__StreamMetadata vorbis_comment;
1102 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1103 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1104 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1105 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1106 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1107 vorbis_comment.data.vorbis_comment.num_comments = 0;
1108 vorbis_comment.data.vorbis_comment.comments = 0;
1109 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1110 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1111 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1113 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1114 /* the above function sets the state for us in case of an error */
1115 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1120 * write the user's metadata blocks
1122 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1123 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1124 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1125 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1126 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1128 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1129 /* the above function sets the state for us in case of an error */
1130 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1134 /* now that all the metadata is written, we save the stream offset */
1135 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 */
1136 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1137 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1140 if(encoder->protected_->verify)
1141 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1143 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1146 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1147 FLAC__StreamEncoder *encoder,
1148 FLAC__StreamEncoderWriteCallback write_callback,
1149 FLAC__StreamEncoderSeekCallback seek_callback,
1150 FLAC__StreamEncoderTellCallback tell_callback,
1151 FLAC__StreamEncoderMetadataCallback metadata_callback,
1155 return init_stream_internal_(
1157 /*read_callback=*/0,
1167 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1168 FLAC__StreamEncoder *encoder,
1169 FLAC__StreamEncoderReadCallback read_callback,
1170 FLAC__StreamEncoderWriteCallback write_callback,
1171 FLAC__StreamEncoderSeekCallback seek_callback,
1172 FLAC__StreamEncoderTellCallback tell_callback,
1173 FLAC__StreamEncoderMetadataCallback metadata_callback,
1177 return init_stream_internal_(
1189 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1190 FLAC__StreamEncoder *encoder,
1192 FLAC__StreamEncoderProgressCallback progress_callback,
1197 FLAC__StreamEncoderInitStatus init_status;
1199 FLAC__ASSERT(0 != encoder);
1200 FLAC__ASSERT(0 != file);
1202 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1203 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1205 /* double protection */
1207 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1208 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1212 * To make sure that our file does not go unclosed after an error, we
1213 * must assign the FILE pointer before any further error can occur in
1217 file = get_binary_stdout_(); /* just to be safe */
1219 encoder->private_->file = file;
1221 encoder->private_->progress_callback = progress_callback;
1222 encoder->private_->bytes_written = 0;
1223 encoder->private_->samples_written = 0;
1224 encoder->private_->frames_written = 0;
1226 init_status = init_stream_internal_(
1228 encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
1229 file_write_callback_,
1230 encoder->private_->file == stdout? 0 : file_seek_callback_,
1231 encoder->private_->file == stdout? 0 : file_tell_callback_,
1232 /*metadata_callback=*/0,
1236 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1237 /* the above function sets the state for us in case of an error */
1242 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1244 FLAC__ASSERT(blocksize != 0);
1245 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1251 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1252 FLAC__StreamEncoder *encoder,
1254 FLAC__StreamEncoderProgressCallback progress_callback,
1258 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1261 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1262 FLAC__StreamEncoder *encoder,
1264 FLAC__StreamEncoderProgressCallback progress_callback,
1268 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1271 static FLAC__StreamEncoderInitStatus init_file_internal_(
1272 FLAC__StreamEncoder *encoder,
1273 const char *filename,
1274 FLAC__StreamEncoderProgressCallback progress_callback,
1281 FLAC__ASSERT(0 != encoder);
1284 * To make sure that our file does not go unclosed after an error, we
1285 * have to do the same entrance checks here that are later performed
1286 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1288 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1289 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1291 file = filename? fopen(filename, "w+b") : stdout;
1294 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1295 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1298 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1301 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_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=*/false);
1311 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1312 FLAC__StreamEncoder *encoder,
1313 const char *filename,
1314 FLAC__StreamEncoderProgressCallback progress_callback,
1318 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1321 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1323 FLAC__bool error = false;
1325 FLAC__ASSERT(0 != encoder);
1326 FLAC__ASSERT(0 != encoder->private_);
1327 FLAC__ASSERT(0 != encoder->protected_);
1329 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1332 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1333 if(encoder->private_->current_sample_number != 0) {
1334 const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
1335 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1336 if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
1341 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1343 if(!encoder->private_->is_being_deleted) {
1344 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
1345 if(encoder->private_->seek_callback) {
1347 if(encoder->private_->is_ogg)
1348 update_ogg_metadata_(encoder);
1351 update_metadata_(encoder);
1353 /* check if an error occurred while updating metadata */
1354 if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
1357 if(encoder->private_->metadata_callback)
1358 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1361 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
1363 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1368 if(0 != encoder->private_->file) {
1369 if(encoder->private_->file != stdout)
1370 fclose(encoder->private_->file);
1371 encoder->private_->file = 0;
1375 if(encoder->private_->is_ogg)
1376 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1380 set_defaults_(encoder);
1383 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1388 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1390 FLAC__ASSERT(0 != encoder);
1391 FLAC__ASSERT(0 != encoder->private_);
1392 FLAC__ASSERT(0 != encoder->protected_);
1393 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1396 /* can't check encoder->private_->is_ogg since that's not set until init time */
1397 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1405 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1407 FLAC__ASSERT(0 != encoder);
1408 FLAC__ASSERT(0 != encoder->private_);
1409 FLAC__ASSERT(0 != encoder->protected_);
1410 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1412 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1413 encoder->protected_->verify = value;
1418 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1420 FLAC__ASSERT(0 != encoder);
1421 FLAC__ASSERT(0 != encoder->private_);
1422 FLAC__ASSERT(0 != encoder->protected_);
1423 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1425 encoder->protected_->streamable_subset = value;
1429 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1431 FLAC__ASSERT(0 != encoder);
1432 FLAC__ASSERT(0 != encoder->private_);
1433 FLAC__ASSERT(0 != encoder->protected_);
1434 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1436 encoder->protected_->channels = value;
1440 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1442 FLAC__ASSERT(0 != encoder);
1443 FLAC__ASSERT(0 != encoder->private_);
1444 FLAC__ASSERT(0 != encoder->protected_);
1445 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1447 encoder->protected_->bits_per_sample = value;
1451 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1453 FLAC__ASSERT(0 != encoder);
1454 FLAC__ASSERT(0 != encoder->private_);
1455 FLAC__ASSERT(0 != encoder->protected_);
1456 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1458 encoder->protected_->sample_rate = value;
1462 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1464 FLAC__bool ok = true;
1465 FLAC__ASSERT(0 != encoder);
1466 FLAC__ASSERT(0 != encoder->private_);
1467 FLAC__ASSERT(0 != encoder->protected_);
1468 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1470 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1471 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1472 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1473 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1476 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1477 /* but it's too hard to specify the string in a locale-specific way */
1479 encoder->protected_->num_apodizations = 1;
1480 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1481 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1483 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1484 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1485 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1486 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1487 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1488 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1489 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1490 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1494 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1496 FLAC__ASSERT(0 != encoder);
1497 FLAC__ASSERT(0 != encoder->private_);
1498 FLAC__ASSERT(0 != encoder->protected_);
1499 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1501 encoder->protected_->blocksize = value;
1505 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1507 FLAC__ASSERT(0 != encoder);
1508 FLAC__ASSERT(0 != encoder->private_);
1509 FLAC__ASSERT(0 != encoder->protected_);
1510 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1512 encoder->protected_->do_mid_side_stereo = value;
1516 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1518 FLAC__ASSERT(0 != encoder);
1519 FLAC__ASSERT(0 != encoder->private_);
1520 FLAC__ASSERT(0 != encoder->protected_);
1521 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1523 encoder->protected_->loose_mid_side_stereo = value;
1527 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1529 FLAC__ASSERT(0 != encoder);
1530 FLAC__ASSERT(0 != encoder->private_);
1531 FLAC__ASSERT(0 != encoder->protected_);
1532 FLAC__ASSERT(0 != specification);
1533 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1535 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1536 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1538 encoder->protected_->num_apodizations = 0;
1540 const char *s = strchr(specification, ';');
1541 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1542 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1543 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1544 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1545 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1546 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1547 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1548 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1549 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1550 else if(n==6 && 0 == strncmp("connes" , specification, n))
1551 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1552 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1553 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1554 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1555 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1556 if (stddev > 0.0 && stddev <= 0.5) {
1557 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1558 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1561 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1562 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1563 else if(n==4 && 0 == strncmp("hann" , specification, n))
1564 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1565 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1566 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1567 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1568 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1569 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1570 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1571 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1572 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1573 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1574 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1575 if (p >= 0.0 && p <= 1.0) {
1576 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1577 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1580 else if(n==5 && 0 == strncmp("welch" , specification, n))
1581 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1582 if (encoder->protected_->num_apodizations == 32)
1585 specification = s+1;
1589 if(encoder->protected_->num_apodizations == 0) {
1590 encoder->protected_->num_apodizations = 1;
1591 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1592 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1598 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1600 FLAC__ASSERT(0 != encoder);
1601 FLAC__ASSERT(0 != encoder->private_);
1602 FLAC__ASSERT(0 != encoder->protected_);
1603 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1605 encoder->protected_->max_lpc_order = value;
1609 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1611 FLAC__ASSERT(0 != encoder);
1612 FLAC__ASSERT(0 != encoder->private_);
1613 FLAC__ASSERT(0 != encoder->protected_);
1614 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1616 encoder->protected_->qlp_coeff_precision = value;
1620 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1622 FLAC__ASSERT(0 != encoder);
1623 FLAC__ASSERT(0 != encoder->private_);
1624 FLAC__ASSERT(0 != encoder->protected_);
1625 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1627 encoder->protected_->do_qlp_coeff_prec_search = value;
1631 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1633 FLAC__ASSERT(0 != encoder);
1634 FLAC__ASSERT(0 != encoder->private_);
1635 FLAC__ASSERT(0 != encoder->protected_);
1636 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1639 /*@@@ deprecated: */
1640 encoder->protected_->do_escape_coding = value;
1647 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1649 FLAC__ASSERT(0 != encoder);
1650 FLAC__ASSERT(0 != encoder->private_);
1651 FLAC__ASSERT(0 != encoder->protected_);
1652 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1654 encoder->protected_->do_exhaustive_model_search = value;
1658 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1660 FLAC__ASSERT(0 != encoder);
1661 FLAC__ASSERT(0 != encoder->private_);
1662 FLAC__ASSERT(0 != encoder->protected_);
1663 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1665 encoder->protected_->min_residual_partition_order = value;
1669 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1671 FLAC__ASSERT(0 != encoder);
1672 FLAC__ASSERT(0 != encoder->private_);
1673 FLAC__ASSERT(0 != encoder->protected_);
1674 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1676 encoder->protected_->max_residual_partition_order = value;
1680 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1682 FLAC__ASSERT(0 != encoder);
1683 FLAC__ASSERT(0 != encoder->private_);
1684 FLAC__ASSERT(0 != encoder->protected_);
1685 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1688 /*@@@ deprecated: */
1689 encoder->protected_->rice_parameter_search_dist = value;
1696 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1698 FLAC__ASSERT(0 != encoder);
1699 FLAC__ASSERT(0 != encoder->private_);
1700 FLAC__ASSERT(0 != encoder->protected_);
1701 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1703 encoder->protected_->total_samples_estimate = value;
1707 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1709 FLAC__ASSERT(0 != encoder);
1710 FLAC__ASSERT(0 != encoder->private_);
1711 FLAC__ASSERT(0 != encoder->protected_);
1712 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1718 /* realloc() does not do exactly what we want so... */
1719 if(encoder->protected_->metadata) {
1720 free(encoder->protected_->metadata);
1721 encoder->protected_->metadata = 0;
1722 encoder->protected_->num_metadata_blocks = 0;
1725 FLAC__StreamMetadata **m;
1726 if(0 == (m = (FLAC__StreamMetadata**)malloc(sizeof(m[0]) * num_blocks)))
1728 memcpy(m, metadata, sizeof(m[0]) * num_blocks);
1729 encoder->protected_->metadata = m;
1730 encoder->protected_->num_metadata_blocks = num_blocks;
1733 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1740 * These three functions are not static, but not publically exposed in
1741 * include/FLAC/ either. They are used by the test suite.
1743 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1745 FLAC__ASSERT(0 != encoder);
1746 FLAC__ASSERT(0 != encoder->private_);
1747 FLAC__ASSERT(0 != encoder->protected_);
1748 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1750 encoder->private_->disable_constant_subframes = value;
1754 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1756 FLAC__ASSERT(0 != encoder);
1757 FLAC__ASSERT(0 != encoder->private_);
1758 FLAC__ASSERT(0 != encoder->protected_);
1759 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1761 encoder->private_->disable_fixed_subframes = value;
1765 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1767 FLAC__ASSERT(0 != encoder);
1768 FLAC__ASSERT(0 != encoder->private_);
1769 FLAC__ASSERT(0 != encoder->protected_);
1770 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1772 encoder->private_->disable_verbatim_subframes = value;
1776 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1778 FLAC__ASSERT(0 != encoder);
1779 FLAC__ASSERT(0 != encoder->private_);
1780 FLAC__ASSERT(0 != encoder->protected_);
1781 return encoder->protected_->state;
1784 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1786 FLAC__ASSERT(0 != encoder);
1787 FLAC__ASSERT(0 != encoder->private_);
1788 FLAC__ASSERT(0 != encoder->protected_);
1789 if(encoder->protected_->verify)
1790 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1792 return FLAC__STREAM_DECODER_UNINITIALIZED;
1795 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1797 FLAC__ASSERT(0 != encoder);
1798 FLAC__ASSERT(0 != encoder->private_);
1799 FLAC__ASSERT(0 != encoder->protected_);
1800 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1801 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1803 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1806 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)
1808 FLAC__ASSERT(0 != encoder);
1809 FLAC__ASSERT(0 != encoder->private_);
1810 FLAC__ASSERT(0 != encoder->protected_);
1811 if(0 != absolute_sample)
1812 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1813 if(0 != frame_number)
1814 *frame_number = encoder->private_->verify.error_stats.frame_number;
1816 *channel = encoder->private_->verify.error_stats.channel;
1818 *sample = encoder->private_->verify.error_stats.sample;
1820 *expected = encoder->private_->verify.error_stats.expected;
1822 *got = encoder->private_->verify.error_stats.got;
1825 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1827 FLAC__ASSERT(0 != encoder);
1828 FLAC__ASSERT(0 != encoder->private_);
1829 FLAC__ASSERT(0 != encoder->protected_);
1830 return encoder->protected_->verify;
1833 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1835 FLAC__ASSERT(0 != encoder);
1836 FLAC__ASSERT(0 != encoder->private_);
1837 FLAC__ASSERT(0 != encoder->protected_);
1838 return encoder->protected_->streamable_subset;
1841 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1843 FLAC__ASSERT(0 != encoder);
1844 FLAC__ASSERT(0 != encoder->private_);
1845 FLAC__ASSERT(0 != encoder->protected_);
1846 return encoder->protected_->channels;
1849 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1851 FLAC__ASSERT(0 != encoder);
1852 FLAC__ASSERT(0 != encoder->private_);
1853 FLAC__ASSERT(0 != encoder->protected_);
1854 return encoder->protected_->bits_per_sample;
1857 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1859 FLAC__ASSERT(0 != encoder);
1860 FLAC__ASSERT(0 != encoder->private_);
1861 FLAC__ASSERT(0 != encoder->protected_);
1862 return encoder->protected_->sample_rate;
1865 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1867 FLAC__ASSERT(0 != encoder);
1868 FLAC__ASSERT(0 != encoder->private_);
1869 FLAC__ASSERT(0 != encoder->protected_);
1870 return encoder->protected_->blocksize;
1873 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1875 FLAC__ASSERT(0 != encoder);
1876 FLAC__ASSERT(0 != encoder->private_);
1877 FLAC__ASSERT(0 != encoder->protected_);
1878 return encoder->protected_->do_mid_side_stereo;
1881 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1883 FLAC__ASSERT(0 != encoder);
1884 FLAC__ASSERT(0 != encoder->private_);
1885 FLAC__ASSERT(0 != encoder->protected_);
1886 return encoder->protected_->loose_mid_side_stereo;
1889 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1891 FLAC__ASSERT(0 != encoder);
1892 FLAC__ASSERT(0 != encoder->private_);
1893 FLAC__ASSERT(0 != encoder->protected_);
1894 return encoder->protected_->max_lpc_order;
1897 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1899 FLAC__ASSERT(0 != encoder);
1900 FLAC__ASSERT(0 != encoder->private_);
1901 FLAC__ASSERT(0 != encoder->protected_);
1902 return encoder->protected_->qlp_coeff_precision;
1905 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1907 FLAC__ASSERT(0 != encoder);
1908 FLAC__ASSERT(0 != encoder->private_);
1909 FLAC__ASSERT(0 != encoder->protected_);
1910 return encoder->protected_->do_qlp_coeff_prec_search;
1913 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1915 FLAC__ASSERT(0 != encoder);
1916 FLAC__ASSERT(0 != encoder->private_);
1917 FLAC__ASSERT(0 != encoder->protected_);
1918 return encoder->protected_->do_escape_coding;
1921 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1923 FLAC__ASSERT(0 != encoder);
1924 FLAC__ASSERT(0 != encoder->private_);
1925 FLAC__ASSERT(0 != encoder->protected_);
1926 return encoder->protected_->do_exhaustive_model_search;
1929 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1931 FLAC__ASSERT(0 != encoder);
1932 FLAC__ASSERT(0 != encoder->private_);
1933 FLAC__ASSERT(0 != encoder->protected_);
1934 return encoder->protected_->min_residual_partition_order;
1937 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1939 FLAC__ASSERT(0 != encoder);
1940 FLAC__ASSERT(0 != encoder->private_);
1941 FLAC__ASSERT(0 != encoder->protected_);
1942 return encoder->protected_->max_residual_partition_order;
1945 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1947 FLAC__ASSERT(0 != encoder);
1948 FLAC__ASSERT(0 != encoder->private_);
1949 FLAC__ASSERT(0 != encoder->protected_);
1950 return encoder->protected_->rice_parameter_search_dist;
1953 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1955 FLAC__ASSERT(0 != encoder);
1956 FLAC__ASSERT(0 != encoder->private_);
1957 FLAC__ASSERT(0 != encoder->protected_);
1958 return encoder->protected_->total_samples_estimate;
1961 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1963 unsigned i, j, channel;
1964 FLAC__int32 x, mid, side;
1965 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1967 FLAC__ASSERT(0 != encoder);
1968 FLAC__ASSERT(0 != encoder->private_);
1969 FLAC__ASSERT(0 != encoder->protected_);
1970 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1974 * we have several flavors of the same basic loop, optimized for
1975 * different conditions:
1977 if(encoder->protected_->max_lpc_order > 0) {
1978 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
1980 * stereo coding: unroll channel loop
1981 * with LPC: calculate floating point version of signal
1984 if(encoder->protected_->verify)
1985 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
1987 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
1988 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
1989 x = mid = side = buffer[0][j];
1990 encoder->private_->integer_signal[0][i] = x;
1991 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1992 encoder->private_->real_signal[0][i] = (FLAC__real)x;
1995 encoder->private_->integer_signal[1][i] = x;
1996 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1997 encoder->private_->real_signal[1][i] = (FLAC__real)x;
2001 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2002 encoder->private_->integer_signal_mid_side[1][i] = side;
2003 encoder->private_->integer_signal_mid_side[0][i] = mid;
2004 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2005 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2006 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2008 encoder->private_->current_sample_number++;
2010 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2012 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2014 /* move unprocessed overread samples to beginnings of arrays */
2015 FLAC__ASSERT(i == blocksize+OVERREAD_);
2016 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2018 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2019 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2020 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2021 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2022 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2023 encoder->private_->real_signal[0][0] = encoder->private_->real_signal[0][i];
2024 encoder->private_->real_signal[1][0] = encoder->private_->real_signal[1][i];
2025 encoder->private_->real_signal_mid_side[0][0] = encoder->private_->real_signal_mid_side[0][i];
2026 encoder->private_->real_signal_mid_side[1][0] = encoder->private_->real_signal_mid_side[1][i];
2028 encoder->private_->current_sample_number = 1;
2030 } while(j < samples);
2034 * independent channel coding: buffer each channel in inner loop
2035 * with LPC: calculate floating point version of signal
2038 if(encoder->protected_->verify)
2039 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2041 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2042 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2043 for(channel = 0; channel < channels; channel++) {
2044 x = buffer[channel][j];
2045 encoder->private_->integer_signal[channel][i] = x;
2046 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2047 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2050 encoder->private_->current_sample_number++;
2052 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2054 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2056 /* move unprocessed overread samples to beginnings of arrays */
2057 FLAC__ASSERT(i == blocksize+OVERREAD_);
2058 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2060 for(channel = 0; channel < channels; channel++) {
2061 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2062 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2063 encoder->private_->real_signal[channel][0] = encoder->private_->real_signal[channel][i];
2066 encoder->private_->current_sample_number = 1;
2068 } while(j < samples);
2072 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2074 * stereo coding: unroll channel loop
2075 * without LPC: no need to calculate floating point version of signal
2078 if(encoder->protected_->verify)
2079 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2081 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2082 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2083 encoder->private_->integer_signal[0][i] = mid = side = buffer[0][j];
2085 encoder->private_->integer_signal[1][i] = x;
2088 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2089 encoder->private_->integer_signal_mid_side[1][i] = side;
2090 encoder->private_->integer_signal_mid_side[0][i] = mid;
2091 encoder->private_->current_sample_number++;
2093 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2095 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2097 /* move unprocessed overread samples to beginnings of arrays */
2098 FLAC__ASSERT(i == blocksize+OVERREAD_);
2099 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2101 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2102 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2103 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2104 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2105 encoder->private_->current_sample_number = 1;
2107 } while(j < samples);
2111 * independent channel coding: buffer each channel in inner loop
2112 * without LPC: no need to calculate floating point version of signal
2115 if(encoder->protected_->verify)
2116 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2118 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2119 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2120 for(channel = 0; channel < channels; channel++)
2121 encoder->private_->integer_signal[channel][i] = buffer[channel][j];
2122 encoder->private_->current_sample_number++;
2124 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2126 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2128 /* move unprocessed overread samples to beginnings of arrays */
2129 FLAC__ASSERT(i == blocksize+OVERREAD_);
2130 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2132 for(channel = 0; channel < channels; channel++)
2133 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2134 encoder->private_->current_sample_number = 1;
2136 } while(j < samples);
2143 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2145 unsigned i, j, k, channel;
2146 FLAC__int32 x, mid, side;
2147 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2149 FLAC__ASSERT(0 != encoder);
2150 FLAC__ASSERT(0 != encoder->private_);
2151 FLAC__ASSERT(0 != encoder->protected_);
2152 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2156 * we have several flavors of the same basic loop, optimized for
2157 * different conditions:
2159 if(encoder->protected_->max_lpc_order > 0) {
2160 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2162 * stereo coding: unroll channel loop
2163 * with LPC: calculate floating point version of signal
2166 if(encoder->protected_->verify)
2167 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2169 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2170 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2171 x = mid = side = buffer[k++];
2172 encoder->private_->integer_signal[0][i] = x;
2173 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2174 encoder->private_->real_signal[0][i] = (FLAC__real)x;
2177 encoder->private_->integer_signal[1][i] = x;
2178 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2179 encoder->private_->real_signal[1][i] = (FLAC__real)x;
2183 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2184 encoder->private_->integer_signal_mid_side[1][i] = side;
2185 encoder->private_->integer_signal_mid_side[0][i] = mid;
2186 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2187 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2188 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2190 encoder->private_->current_sample_number++;
2192 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2194 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2196 /* move unprocessed overread samples to beginnings of arrays */
2197 FLAC__ASSERT(i == blocksize+OVERREAD_);
2198 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2200 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2201 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2202 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2203 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2204 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2205 encoder->private_->real_signal[0][0] = encoder->private_->real_signal[0][i];
2206 encoder->private_->real_signal[1][0] = encoder->private_->real_signal[1][i];
2207 encoder->private_->real_signal_mid_side[0][0] = encoder->private_->real_signal_mid_side[0][i];
2208 encoder->private_->real_signal_mid_side[1][0] = encoder->private_->real_signal_mid_side[1][i];
2210 encoder->private_->current_sample_number = 1;
2212 } while(j < samples);
2216 * independent channel coding: buffer each channel in inner loop
2217 * with LPC: calculate floating point version of signal
2220 if(encoder->protected_->verify)
2221 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2223 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2224 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2225 for(channel = 0; channel < channels; channel++) {
2227 encoder->private_->integer_signal[channel][i] = x;
2228 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2229 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2232 encoder->private_->current_sample_number++;
2234 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2236 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2238 /* move unprocessed overread samples to beginnings of arrays */
2239 FLAC__ASSERT(i == blocksize+OVERREAD_);
2240 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2242 for(channel = 0; channel < channels; channel++) {
2243 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2244 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2245 encoder->private_->real_signal[channel][0] = encoder->private_->real_signal[channel][i];
2248 encoder->private_->current_sample_number = 1;
2250 } while(j < samples);
2254 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2256 * stereo coding: unroll channel loop
2257 * without LPC: no need to calculate floating point version of signal
2260 if(encoder->protected_->verify)
2261 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2263 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2264 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2265 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2267 encoder->private_->integer_signal[1][i] = x;
2270 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2271 encoder->private_->integer_signal_mid_side[1][i] = side;
2272 encoder->private_->integer_signal_mid_side[0][i] = mid;
2273 encoder->private_->current_sample_number++;
2275 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2277 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2279 /* move unprocessed overread samples to beginnings of arrays */
2280 FLAC__ASSERT(i == blocksize+OVERREAD_);
2281 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2283 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2284 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2285 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2286 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2287 encoder->private_->current_sample_number = 1;
2289 } while(j < samples);
2293 * independent channel coding: buffer each channel in inner loop
2294 * without LPC: no need to calculate floating point version of signal
2297 if(encoder->protected_->verify)
2298 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2300 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2301 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2302 for(channel = 0; channel < channels; channel++)
2303 encoder->private_->integer_signal[channel][i] = buffer[k++];
2304 encoder->private_->current_sample_number++;
2306 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2308 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2310 /* move unprocessed overread samples to beginnings of arrays */
2311 FLAC__ASSERT(i == blocksize+OVERREAD_);
2312 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2314 for(channel = 0; channel < channels; channel++)
2315 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2316 encoder->private_->current_sample_number = 1;
2318 } while(j < samples);
2325 /***********************************************************************
2327 * Private class methods
2329 ***********************************************************************/
2331 void set_defaults_(FLAC__StreamEncoder *encoder)
2333 FLAC__ASSERT(0 != encoder);
2335 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2336 encoder->protected_->verify = true;
2338 encoder->protected_->verify = false;
2340 encoder->protected_->streamable_subset = true;
2341 encoder->protected_->do_mid_side_stereo = false;
2342 encoder->protected_->loose_mid_side_stereo = false;
2343 encoder->protected_->channels = 2;
2344 encoder->protected_->bits_per_sample = 16;
2345 encoder->protected_->sample_rate = 44100;
2346 encoder->protected_->blocksize = 0;
2347 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2348 encoder->protected_->num_apodizations = 1;
2349 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2350 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2352 encoder->protected_->max_lpc_order = 0;
2353 encoder->protected_->qlp_coeff_precision = 0;
2354 encoder->protected_->do_qlp_coeff_prec_search = false;
2355 encoder->protected_->do_exhaustive_model_search = false;
2356 encoder->protected_->do_escape_coding = false;
2357 encoder->protected_->min_residual_partition_order = 0;
2358 encoder->protected_->max_residual_partition_order = 0;
2359 encoder->protected_->rice_parameter_search_dist = 0;
2360 encoder->protected_->total_samples_estimate = 0;
2361 encoder->protected_->metadata = 0;
2362 encoder->protected_->num_metadata_blocks = 0;
2364 encoder->private_->seek_table = 0;
2365 encoder->private_->disable_constant_subframes = false;
2366 encoder->private_->disable_fixed_subframes = false;
2367 encoder->private_->disable_verbatim_subframes = false;
2369 encoder->private_->is_ogg = false;
2371 encoder->private_->read_callback = 0;
2372 encoder->private_->write_callback = 0;
2373 encoder->private_->seek_callback = 0;
2374 encoder->private_->tell_callback = 0;
2375 encoder->private_->metadata_callback = 0;
2376 encoder->private_->progress_callback = 0;
2377 encoder->private_->client_data = 0;
2380 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2384 void free_(FLAC__StreamEncoder *encoder)
2386 unsigned i, channel;
2388 FLAC__ASSERT(0 != encoder);
2389 if(encoder->protected_->metadata) {
2390 free(encoder->protected_->metadata);
2391 encoder->protected_->metadata = 0;
2392 encoder->protected_->num_metadata_blocks = 0;
2394 for(i = 0; i < encoder->protected_->channels; i++) {
2395 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2396 free(encoder->private_->integer_signal_unaligned[i]);
2397 encoder->private_->integer_signal_unaligned[i] = 0;
2399 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2400 if(0 != encoder->private_->real_signal_unaligned[i]) {
2401 free(encoder->private_->real_signal_unaligned[i]);
2402 encoder->private_->real_signal_unaligned[i] = 0;
2406 for(i = 0; i < 2; i++) {
2407 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2408 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2409 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2411 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2412 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2413 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2414 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2418 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2419 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2420 if(0 != encoder->private_->window_unaligned[i]) {
2421 free(encoder->private_->window_unaligned[i]);
2422 encoder->private_->window_unaligned[i] = 0;
2425 if(0 != encoder->private_->windowed_signal_unaligned) {
2426 free(encoder->private_->windowed_signal_unaligned);
2427 encoder->private_->windowed_signal_unaligned = 0;
2430 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2431 for(i = 0; i < 2; i++) {
2432 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2433 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2434 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2438 for(channel = 0; channel < 2; channel++) {
2439 for(i = 0; i < 2; i++) {
2440 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2441 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2442 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2446 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2447 free(encoder->private_->abs_residual_partition_sums_unaligned);
2448 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2450 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2451 free(encoder->private_->raw_bits_per_partition_unaligned);
2452 encoder->private_->raw_bits_per_partition_unaligned = 0;
2454 if(encoder->protected_->verify) {
2455 for(i = 0; i < encoder->protected_->channels; i++) {
2456 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2457 free(encoder->private_->verify.input_fifo.data[i]);
2458 encoder->private_->verify.input_fifo.data[i] = 0;
2462 FLAC__bitwriter_free(encoder->private_->frame);
2465 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2468 unsigned i, channel;
2470 FLAC__ASSERT(new_blocksize > 0);
2471 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2472 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2474 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2475 if(new_blocksize <= encoder->private_->input_capacity)
2480 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2481 * requires that the input arrays (in our case the integer signals)
2482 * have a buffer of up to 3 zeroes in front (at negative indices) for
2483 * alignment purposes; we use 4 in front to keep the data well-aligned.
2486 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2487 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2488 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2489 encoder->private_->integer_signal[i] += 4;
2490 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2491 if(encoder->protected_->max_lpc_order > 0)
2492 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2495 for(i = 0; ok && i < 2; i++) {
2496 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]);
2497 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2498 encoder->private_->integer_signal_mid_side[i] += 4;
2499 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2500 if(encoder->protected_->max_lpc_order > 0)
2501 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]);
2504 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2505 if(ok && encoder->protected_->max_lpc_order > 0) {
2506 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2507 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2508 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2511 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2512 for(i = 0; ok && i < 2; i++) {
2513 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2516 for(channel = 0; ok && channel < 2; channel++) {
2517 for(i = 0; ok && i < 2; i++) {
2518 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]);
2521 /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */
2522 /*@@@ 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) */
2523 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2524 if(encoder->protected_->do_escape_coding)
2525 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2527 /* now adjust the windows if the blocksize has changed */
2528 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2529 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2530 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2531 switch(encoder->protected_->apodizations[i].type) {
2532 case FLAC__APODIZATION_BARTLETT:
2533 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2535 case FLAC__APODIZATION_BARTLETT_HANN:
2536 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2538 case FLAC__APODIZATION_BLACKMAN:
2539 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2541 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2542 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2544 case FLAC__APODIZATION_CONNES:
2545 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2547 case FLAC__APODIZATION_FLATTOP:
2548 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2550 case FLAC__APODIZATION_GAUSS:
2551 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2553 case FLAC__APODIZATION_HAMMING:
2554 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2556 case FLAC__APODIZATION_HANN:
2557 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2559 case FLAC__APODIZATION_KAISER_BESSEL:
2560 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2562 case FLAC__APODIZATION_NUTTALL:
2563 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2565 case FLAC__APODIZATION_RECTANGLE:
2566 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2568 case FLAC__APODIZATION_TRIANGLE:
2569 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2571 case FLAC__APODIZATION_TUKEY:
2572 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2574 case FLAC__APODIZATION_WELCH:
2575 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2579 /* double protection */
2580 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2588 encoder->private_->input_capacity = new_blocksize;
2590 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2595 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2597 const FLAC__byte *buffer;
2600 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2602 if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
2603 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2607 if(encoder->protected_->verify) {
2608 encoder->private_->verify.output.data = buffer;
2609 encoder->private_->verify.output.bytes = bytes;
2610 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2611 encoder->private_->verify.needs_magic_hack = true;
2614 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2615 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2616 FLAC__bitwriter_clear(encoder->private_->frame);
2617 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2618 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2624 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2625 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2626 FLAC__bitwriter_clear(encoder->private_->frame);
2627 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2631 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2632 FLAC__bitwriter_clear(encoder->private_->frame);
2635 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2636 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2642 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2644 FLAC__StreamEncoderWriteStatus status;
2645 FLAC__uint64 output_position = 0;
2647 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2648 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2649 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2650 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2654 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2657 FLAC__MetadataType type = (buffer[0] & 0x7f);
2658 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2659 encoder->protected_->streaminfo_offset = output_position;
2660 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2661 encoder->protected_->seektable_offset = output_position;
2665 * Mark the current seek point if hit (if audio_offset == 0 that
2666 * means we're still writing metadata and haven't hit the first
2669 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2670 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2671 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2672 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2673 FLAC__uint64 test_sample;
2675 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2676 test_sample = encoder->private_->seek_table->points[i].sample_number;
2677 if(test_sample > frame_last_sample) {
2680 else if(test_sample >= frame_first_sample) {
2681 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2682 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2683 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2684 encoder->private_->first_seekpoint_to_check++;
2685 /* DO NOT: "break;" and here's why:
2686 * The seektable template may contain more than one target
2687 * sample for any given frame; we will keep looping, generating
2688 * duplicate seekpoints for them, and we'll clean it up later,
2689 * just before writing the seektable back to the metadata.
2693 encoder->private_->first_seekpoint_to_check++;
2699 if(encoder->private_->is_ogg) {
2700 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2701 &encoder->protected_->ogg_encoder_aspect,
2705 encoder->private_->current_frame_number,
2707 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2709 encoder->private_->client_data
2714 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2716 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2717 encoder->private_->bytes_written += bytes;
2718 encoder->private_->samples_written += samples;
2719 /* we keep a high watermark on the number of frames written because
2720 * when the encoder goes back to write metadata, 'current_frame'
2721 * will drop back to 0.
2723 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2726 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2731 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2732 void update_metadata_(const FLAC__StreamEncoder *encoder)
2734 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2735 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2736 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2737 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2738 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2739 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2740 FLAC__StreamEncoderSeekStatus seek_status;
2742 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2744 /* All this is based on intimate knowledge of the stream header
2745 * layout, but a change to the header format that would break this
2746 * would also break all streams encoded in the previous format.
2750 * Write MD5 signature
2753 const unsigned md5_offset =
2754 FLAC__STREAM_METADATA_HEADER_LENGTH +
2756 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2757 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2758 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2759 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2760 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2761 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2762 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2763 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2766 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2767 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2768 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2771 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2772 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2778 * Write total samples
2781 const unsigned total_samples_byte_offset =
2782 FLAC__STREAM_METADATA_HEADER_LENGTH +
2784 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2785 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2786 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2787 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2788 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2789 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2790 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2794 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2795 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2796 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2797 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2798 b[4] = (FLAC__byte)(samples & 0xFF);
2799 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) {
2800 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2801 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2804 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2805 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2811 * Write min/max framesize
2814 const unsigned min_framesize_offset =
2815 FLAC__STREAM_METADATA_HEADER_LENGTH +
2817 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2818 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2821 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2822 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2823 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2824 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2825 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2826 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2827 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) {
2828 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2829 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2832 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2833 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2841 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2844 FLAC__format_seektable_sort(encoder->private_->seek_table);
2846 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2848 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) {
2849 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2850 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2854 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2857 xx = encoder->private_->seek_table->points[i].sample_number;
2858 b[7] = (FLAC__byte)xx; xx >>= 8;
2859 b[6] = (FLAC__byte)xx; xx >>= 8;
2860 b[5] = (FLAC__byte)xx; xx >>= 8;
2861 b[4] = (FLAC__byte)xx; xx >>= 8;
2862 b[3] = (FLAC__byte)xx; xx >>= 8;
2863 b[2] = (FLAC__byte)xx; xx >>= 8;
2864 b[1] = (FLAC__byte)xx; xx >>= 8;
2865 b[0] = (FLAC__byte)xx; xx >>= 8;
2866 xx = encoder->private_->seek_table->points[i].stream_offset;
2867 b[15] = (FLAC__byte)xx; xx >>= 8;
2868 b[14] = (FLAC__byte)xx; xx >>= 8;
2869 b[13] = (FLAC__byte)xx; xx >>= 8;
2870 b[12] = (FLAC__byte)xx; xx >>= 8;
2871 b[11] = (FLAC__byte)xx; xx >>= 8;
2872 b[10] = (FLAC__byte)xx; xx >>= 8;
2873 b[9] = (FLAC__byte)xx; xx >>= 8;
2874 b[8] = (FLAC__byte)xx; xx >>= 8;
2875 x = encoder->private_->seek_table->points[i].frame_samples;
2876 b[17] = (FLAC__byte)x; x >>= 8;
2877 b[16] = (FLAC__byte)x; x >>= 8;
2878 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2879 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2887 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2888 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2890 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2891 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2892 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2893 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2894 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2895 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2896 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2897 FLAC__STREAM_SYNC_LENGTH
2899 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2900 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2901 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2902 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2903 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2906 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2907 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2909 /* Pre-check that client supports seeking, since we don't want the
2910 * ogg_helper code to ever have to deal with this condition.
2912 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2915 /* All this is based on intimate knowledge of the stream header
2916 * layout, but a change to the header format that would break this
2917 * would also break all streams encoded in the previous format.
2921 ** Write STREAMINFO stats
2923 simple_ogg_page__init(&page);
2924 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2925 simple_ogg_page__clear(&page);
2926 return; /* state already set */
2930 * Write MD5 signature
2933 const unsigned md5_offset =
2934 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2935 FLAC__STREAM_METADATA_HEADER_LENGTH +
2937 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2938 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2939 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2940 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2941 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2942 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2943 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2944 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2947 if(md5_offset + 16 > (unsigned)page.body_len) {
2948 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2949 simple_ogg_page__clear(&page);
2952 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2956 * Write total samples
2959 const unsigned total_samples_byte_offset =
2960 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2961 FLAC__STREAM_METADATA_HEADER_LENGTH +
2963 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2964 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2965 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2966 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2967 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2968 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2969 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2973 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2974 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2975 simple_ogg_page__clear(&page);
2978 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2979 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2980 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2981 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2982 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2983 b[4] = (FLAC__byte)(samples & 0xFF);
2984 memcpy(page.body + total_samples_byte_offset, b, 5);
2988 * Write min/max framesize
2991 const unsigned min_framesize_offset =
2992 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2993 FLAC__STREAM_METADATA_HEADER_LENGTH +
2995 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2996 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2999 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
3000 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
3001 simple_ogg_page__clear(&page);
3004 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
3005 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
3006 b[2] = (FLAC__byte)(min_framesize & 0xFF);
3007 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
3008 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
3009 b[5] = (FLAC__byte)(max_framesize & 0xFF);
3010 memcpy(page.body + min_framesize_offset, b, 6);
3012 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
3013 simple_ogg_page__clear(&page);
3014 return; /* state already set */
3016 simple_ogg_page__clear(&page);
3021 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
3025 FLAC__format_seektable_sort(encoder->private_->seek_table);
3027 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
3029 simple_ogg_page__init(&page);
3030 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
3031 simple_ogg_page__clear(&page);
3032 return; /* state already set */
3035 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
3036 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
3037 simple_ogg_page__clear(&page);
3041 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
3044 xx = encoder->private_->seek_table->points[i].sample_number;
3045 b[7] = (FLAC__byte)xx; xx >>= 8;
3046 b[6] = (FLAC__byte)xx; xx >>= 8;
3047 b[5] = (FLAC__byte)xx; xx >>= 8;
3048 b[4] = (FLAC__byte)xx; xx >>= 8;
3049 b[3] = (FLAC__byte)xx; xx >>= 8;
3050 b[2] = (FLAC__byte)xx; xx >>= 8;
3051 b[1] = (FLAC__byte)xx; xx >>= 8;
3052 b[0] = (FLAC__byte)xx; xx >>= 8;
3053 xx = encoder->private_->seek_table->points[i].stream_offset;
3054 b[15] = (FLAC__byte)xx; xx >>= 8;
3055 b[14] = (FLAC__byte)xx; xx >>= 8;
3056 b[13] = (FLAC__byte)xx; xx >>= 8;
3057 b[12] = (FLAC__byte)xx; xx >>= 8;
3058 b[11] = (FLAC__byte)xx; xx >>= 8;
3059 b[10] = (FLAC__byte)xx; xx >>= 8;
3060 b[9] = (FLAC__byte)xx; xx >>= 8;
3061 b[8] = (FLAC__byte)xx; xx >>= 8;
3062 x = encoder->private_->seek_table->points[i].frame_samples;
3063 b[17] = (FLAC__byte)x; x >>= 8;
3064 b[16] = (FLAC__byte)x; x >>= 8;
3068 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
3069 simple_ogg_page__clear(&page);
3070 return; /* state already set */
3072 simple_ogg_page__clear(&page);
3077 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
3080 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
3083 * Accumulate raw signal to the MD5 signature
3085 if(!FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) {
3086 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3091 * Process the frame header and subframes into the frame bitbuffer
3093 if(!process_subframes_(encoder, is_fractional_block)) {
3094 /* the above function sets the state for us in case of an error */
3099 * Zero-pad the frame to a byte_boundary
3101 if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
3102 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3107 * CRC-16 the whole thing
3109 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
3111 !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
3112 !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
3114 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3121 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
3122 /* the above function sets the state for us in case of an error */
3127 * Get ready for the next frame
3129 encoder->private_->current_sample_number = 0;
3130 encoder->private_->current_frame_number++;
3131 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
3136 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
3138 FLAC__FrameHeader frame_header;
3139 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
3140 FLAC__bool do_independent, do_mid_side;
3143 * Calculate the min,max Rice partition orders
3145 if(is_fractional_block) {
3146 max_partition_order = 0;
3149 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
3150 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
3152 min_partition_order = min(min_partition_order, max_partition_order);
3157 frame_header.blocksize = encoder->protected_->blocksize;
3158 frame_header.sample_rate = encoder->protected_->sample_rate;
3159 frame_header.channels = encoder->protected_->channels;
3160 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
3161 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
3162 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
3163 frame_header.number.frame_number = encoder->private_->current_frame_number;
3166 * Figure out what channel assignments to try
3168 if(encoder->protected_->do_mid_side_stereo) {
3169 if(encoder->protected_->loose_mid_side_stereo) {
3170 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
3171 do_independent = true;
3175 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
3176 do_mid_side = !do_independent;
3180 do_independent = true;
3185 do_independent = true;
3186 do_mid_side = false;
3189 FLAC__ASSERT(do_independent || do_mid_side);
3192 * Check for wasted bits; set effective bps for each subframe
3194 if(do_independent) {
3195 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3196 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
3197 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
3198 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
3202 FLAC__ASSERT(encoder->protected_->channels == 2);
3203 for(channel = 0; channel < 2; channel++) {
3204 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
3205 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
3206 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
3211 * First do a normal encoding pass of each independent channel
3213 if(do_independent) {
3214 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3218 min_partition_order,
3219 max_partition_order,
3221 encoder->private_->subframe_bps[channel],
3222 encoder->private_->integer_signal[channel],
3223 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3224 encoder->private_->real_signal[channel],
3226 encoder->private_->subframe_workspace_ptr[channel],
3227 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
3228 encoder->private_->residual_workspace[channel],
3229 encoder->private_->best_subframe+channel,
3230 encoder->private_->best_subframe_bits+channel
3238 * Now do mid and side channels if requested
3241 FLAC__ASSERT(encoder->protected_->channels == 2);
3243 for(channel = 0; channel < 2; channel++) {
3247 min_partition_order,
3248 max_partition_order,
3250 encoder->private_->subframe_bps_mid_side[channel],
3251 encoder->private_->integer_signal_mid_side[channel],
3252 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3253 encoder->private_->real_signal_mid_side[channel],
3255 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3256 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3257 encoder->private_->residual_workspace_mid_side[channel],
3258 encoder->private_->best_subframe_mid_side+channel,
3259 encoder->private_->best_subframe_bits_mid_side+channel
3267 * Compose the frame bitbuffer
3270 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3271 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3272 FLAC__ChannelAssignment channel_assignment;
3274 FLAC__ASSERT(encoder->protected_->channels == 2);
3276 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3277 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3280 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3284 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
3285 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
3286 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
3287 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
3288 FLAC__ASSERT(do_independent && do_mid_side);
3290 /* We have to figure out which channel assignent results in the smallest frame */
3291 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3292 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3293 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3294 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3296 channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
3297 min_bits = bits[channel_assignment];
3298 for(ca = 1; ca <= 3; ca++) {
3299 if(bits[ca] < min_bits) {
3300 min_bits = bits[ca];
3301 channel_assignment = (FLAC__ChannelAssignment)ca;
3306 frame_header.channel_assignment = channel_assignment;
3308 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3309 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3313 switch(channel_assignment) {
3314 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3315 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3316 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3318 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3319 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3320 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3322 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3323 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3324 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3326 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3327 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3328 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3334 switch(channel_assignment) {
3335 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3336 left_bps = encoder->private_->subframe_bps [0];
3337 right_bps = encoder->private_->subframe_bps [1];
3339 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3340 left_bps = encoder->private_->subframe_bps [0];
3341 right_bps = encoder->private_->subframe_bps_mid_side[1];
3343 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3344 left_bps = encoder->private_->subframe_bps_mid_side[1];
3345 right_bps = encoder->private_->subframe_bps [1];
3347 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3348 left_bps = encoder->private_->subframe_bps_mid_side[0];
3349 right_bps = encoder->private_->subframe_bps_mid_side[1];
3355 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3356 if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
3358 if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
3362 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3363 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3367 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3368 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)) {
3369 /* the above function sets the state for us in case of an error */
3375 if(encoder->protected_->loose_mid_side_stereo) {
3376 encoder->private_->loose_mid_side_stereo_frame_count++;
3377 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3378 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3381 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3386 FLAC__bool process_subframe_(
3387 FLAC__StreamEncoder *encoder,
3388 unsigned min_partition_order,
3389 unsigned max_partition_order,
3390 const FLAC__FrameHeader *frame_header,
3391 unsigned subframe_bps,
3392 const FLAC__int32 integer_signal[],
3393 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3394 const FLAC__real real_signal[],
3396 FLAC__Subframe *subframe[2],
3397 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3398 FLAC__int32 *residual[2],
3399 unsigned *best_subframe,
3403 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3404 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3406 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3408 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3409 FLAC__double lpc_residual_bits_per_sample;
3410 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 */
3411 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3412 unsigned min_lpc_order, max_lpc_order, lpc_order;
3413 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3415 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3416 unsigned rice_parameter;
3417 unsigned _candidate_bits, _best_bits;
3418 unsigned _best_subframe;
3420 FLAC__ASSERT(frame_header->blocksize > 0);
3422 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3424 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3425 _best_bits = UINT_MAX;
3427 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3429 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3430 unsigned signal_is_constant = false;
3431 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);
3432 /* check for constant subframe */
3434 !encoder->private_->disable_constant_subframes &&
3435 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3436 fixed_residual_bits_per_sample[1] == 0.0
3438 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3441 /* the above means it's possible all samples are the same value; now double-check it: */
3443 signal_is_constant = true;
3444 for(i = 1; i < frame_header->blocksize; i++) {
3445 if(integer_signal[0] != integer_signal[i]) {
3446 signal_is_constant = false;
3451 if(signal_is_constant) {
3452 _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
3453 if(_candidate_bits < _best_bits) {
3454 _best_subframe = !_best_subframe;
3455 _best_bits = _candidate_bits;
3459 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3461 if(encoder->protected_->do_exhaustive_model_search) {
3462 min_fixed_order = 0;
3463 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3466 min_fixed_order = max_fixed_order = guess_fixed_order;
3468 if(max_fixed_order >= frame_header->blocksize)
3469 max_fixed_order = frame_header->blocksize - 1;
3470 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3471 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3472 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3473 continue; /* don't even try */
3474 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 */
3476 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3477 continue; /* don't even try */
3478 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 */
3480 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3481 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3482 #ifdef DEBUG_VERBOSE
3483 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3485 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3488 evaluate_fixed_subframe_(
3491 residual[!_best_subframe],
3492 encoder->private_->abs_residual_partition_sums,
3493 encoder->private_->raw_bits_per_partition,
3494 frame_header->blocksize,
3498 min_partition_order,
3499 max_partition_order,
3500 encoder->protected_->do_escape_coding,
3501 encoder->protected_->rice_parameter_search_dist,
3502 subframe[!_best_subframe],
3503 partitioned_rice_contents[!_best_subframe]
3505 if(_candidate_bits < _best_bits) {
3506 _best_subframe = !_best_subframe;
3507 _best_bits = _candidate_bits;
3512 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3514 if(encoder->protected_->max_lpc_order > 0) {
3515 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3516 max_lpc_order = frame_header->blocksize-1;
3518 max_lpc_order = encoder->protected_->max_lpc_order;
3519 if(max_lpc_order > 0) {
3521 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3522 FLAC__lpc_window_data(real_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3523 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3524 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3525 if(autoc[0] != 0.0) {
3526 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3527 if(encoder->protected_->do_exhaustive_model_search) {
3531 const unsigned guess_lpc_order =
3532 FLAC__lpc_compute_best_order(
3535 frame_header->blocksize,
3537 encoder->protected_->do_qlp_coeff_prec_search?
3538 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3539 encoder->protected_->qlp_coeff_precision
3542 min_lpc_order = max_lpc_order = guess_lpc_order;
3544 if(max_lpc_order >= frame_header->blocksize)
3545 max_lpc_order = frame_header->blocksize - 1;
3546 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3547 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3548 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3549 continue; /* don't even try */
3550 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3551 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3552 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3553 #ifdef DEBUG_VERBOSE
3554 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3556 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3558 if(encoder->protected_->do_qlp_coeff_prec_search) {
3559 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3560 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3561 if(subframe_bps <= 17) {
3562 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3563 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3566 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3569 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3571 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3573 evaluate_lpc_subframe_(
3576 residual[!_best_subframe],
3577 encoder->private_->abs_residual_partition_sums,
3578 encoder->private_->raw_bits_per_partition,
3579 encoder->private_->lp_coeff[lpc_order-1],
3580 frame_header->blocksize,
3583 qlp_coeff_precision,
3585 min_partition_order,
3586 max_partition_order,
3587 encoder->protected_->do_escape_coding,
3588 encoder->protected_->rice_parameter_search_dist,
3589 subframe[!_best_subframe],
3590 partitioned_rice_contents[!_best_subframe]
3592 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3593 if(_candidate_bits < _best_bits) {
3594 _best_subframe = !_best_subframe;
3595 _best_bits = _candidate_bits;
3604 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3608 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3609 if(_best_bits == UINT_MAX) {
3610 FLAC__ASSERT(_best_subframe == 0);
3611 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3614 *best_subframe = _best_subframe;
3615 *best_bits = _best_bits;
3620 FLAC__bool add_subframe_(
3621 FLAC__StreamEncoder *encoder,
3623 unsigned subframe_bps,
3624 const FLAC__Subframe *subframe,
3625 FLAC__BitWriter *frame
3628 switch(subframe->type) {
3629 case FLAC__SUBFRAME_TYPE_CONSTANT:
3630 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3631 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3635 case FLAC__SUBFRAME_TYPE_FIXED:
3636 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3637 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3641 case FLAC__SUBFRAME_TYPE_LPC:
3642 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3643 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3647 case FLAC__SUBFRAME_TYPE_VERBATIM:
3648 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3649 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3660 #define SPOTCHECK_ESTIMATE 0
3661 #if SPOTCHECK_ESTIMATE
3662 static void spotcheck_subframe_estimate_(
3663 FLAC__StreamEncoder *encoder,
3665 unsigned subframe_bps,
3666 const FLAC__Subframe *subframe,
3671 FLAC__BitWriter *frame = FLAC__bitwriter_new();
3673 fprintf(stderr, "EST: can't allocate frame\n");
3676 if(!FLAC__bitwriter_init(frame)) {
3677 fprintf(stderr, "EST: can't init frame\n");
3680 ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
3683 const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
3684 if(estimate != actual)
3685 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);
3687 FLAC__bitwriter_delete(frame);
3691 unsigned evaluate_constant_subframe_(
3692 FLAC__StreamEncoder *encoder,
3693 const FLAC__int32 signal,
3695 unsigned subframe_bps,
3696 FLAC__Subframe *subframe
3700 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3701 subframe->data.constant.value = signal;
3703 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
3705 #if SPOTCHECK_ESTIMATE
3706 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3708 (void)encoder, (void)blocksize;
3714 unsigned evaluate_fixed_subframe_(
3715 FLAC__StreamEncoder *encoder,
3716 const FLAC__int32 signal[],
3717 FLAC__int32 residual[],
3718 FLAC__uint64 abs_residual_partition_sums[],
3719 unsigned raw_bits_per_partition[],
3721 unsigned subframe_bps,
3723 unsigned rice_parameter,
3724 unsigned min_partition_order,
3725 unsigned max_partition_order,
3726 FLAC__bool do_escape_coding,
3727 unsigned rice_parameter_search_dist,
3728 FLAC__Subframe *subframe,
3729 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3732 unsigned i, residual_bits, estimate;
3733 const unsigned residual_samples = blocksize - order;
3735 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3737 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3739 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3740 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3741 subframe->data.fixed.residual = residual;
3744 find_best_partition_order_(
3747 abs_residual_partition_sums,
3748 raw_bits_per_partition,
3752 min_partition_order,
3753 max_partition_order,
3755 rice_parameter_search_dist,
3756 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3759 subframe->data.fixed.order = order;
3760 for(i = 0; i < order; i++)
3761 subframe->data.fixed.warmup[i] = signal[i];
3763 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
3765 #if SPOTCHECK_ESTIMATE
3766 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3772 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3773 unsigned evaluate_lpc_subframe_(
3774 FLAC__StreamEncoder *encoder,
3775 const FLAC__int32 signal[],
3776 FLAC__int32 residual[],
3777 FLAC__uint64 abs_residual_partition_sums[],
3778 unsigned raw_bits_per_partition[],
3779 const FLAC__real lp_coeff[],
3781 unsigned subframe_bps,
3783 unsigned qlp_coeff_precision,
3784 unsigned rice_parameter,
3785 unsigned min_partition_order,
3786 unsigned max_partition_order,
3787 FLAC__bool do_escape_coding,
3788 unsigned rice_parameter_search_dist,
3789 FLAC__Subframe *subframe,
3790 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3793 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3794 unsigned i, residual_bits, estimate;
3795 int quantization, ret;
3796 const unsigned residual_samples = blocksize - order;
3798 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3799 if(subframe_bps <= 16) {
3800 FLAC__ASSERT(order > 0);
3801 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3802 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3805 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3807 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3809 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3810 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3811 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3813 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3815 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3817 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3819 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3820 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3821 subframe->data.lpc.residual = residual;
3824 find_best_partition_order_(
3827 abs_residual_partition_sums,
3828 raw_bits_per_partition,
3832 min_partition_order,
3833 max_partition_order,
3835 rice_parameter_search_dist,
3836 &subframe->data.lpc.entropy_coding_method.data.partitioned_rice
3839 subframe->data.lpc.order = order;
3840 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3841 subframe->data.lpc.quantization_level = quantization;
3842 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3843 for(i = 0; i < order; i++)
3844 subframe->data.lpc.warmup[i] = signal[i];
3846 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;
3848 #if SPOTCHECK_ESTIMATE
3849 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3856 unsigned evaluate_verbatim_subframe_(
3857 FLAC__StreamEncoder *encoder,
3858 const FLAC__int32 signal[],
3860 unsigned subframe_bps,
3861 FLAC__Subframe *subframe
3866 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3868 subframe->data.verbatim.data = signal;
3870 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
3872 #if SPOTCHECK_ESTIMATE
3873 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3881 unsigned find_best_partition_order_(
3882 FLAC__StreamEncoderPrivate *private_,
3883 const FLAC__int32 residual[],
3884 FLAC__uint64 abs_residual_partition_sums[],
3885 unsigned raw_bits_per_partition[],
3886 unsigned residual_samples,
3887 unsigned predictor_order,
3888 unsigned rice_parameter,
3889 unsigned min_partition_order,
3890 unsigned max_partition_order,
3891 FLAC__bool do_escape_coding,
3892 unsigned rice_parameter_search_dist,
3893 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
3896 unsigned residual_bits, best_residual_bits = 0;
3897 unsigned best_parameters_index = 0;
3898 const unsigned blocksize = residual_samples + predictor_order;
3900 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3901 min_partition_order = min(min_partition_order, max_partition_order);
3903 precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order);
3905 if(do_escape_coding)
3906 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3909 int partition_order;
3912 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3914 set_partitioned_rice_(
3915 #ifdef EXACT_RICE_BITS_CALCULATION
3918 abs_residual_partition_sums+sum,
3919 raw_bits_per_partition+sum,
3923 rice_parameter_search_dist,
3924 (unsigned)partition_order,
3926 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3931 FLAC__ASSERT(best_residual_bits != 0);
3934 sum += 1u << partition_order;
3935 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3936 best_residual_bits = residual_bits;
3937 best_parameters_index = !best_parameters_index;
3938 best_partitioned_rice->order = partition_order;
3944 * We are allowed to de-const the pointer based on our special knowledge;
3945 * it is const to the outside world.
3948 FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents;
3949 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order));
3950 memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3951 memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3954 return best_residual_bits;
3957 void precompute_partition_info_sums_(
3958 const FLAC__int32 residual[],
3959 FLAC__uint64 abs_residual_partition_sums[],
3960 unsigned residual_samples,
3961 unsigned predictor_order,
3962 unsigned min_partition_order,
3963 unsigned max_partition_order
3966 int partition_order;
3967 unsigned from_partition, to_partition = 0;
3968 const unsigned blocksize = residual_samples + predictor_order;
3970 /* first do max_partition_order */
3971 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3972 FLAC__uint64 abs_residual_partition_sum; /* OPT: can reasonably be FLAC__uint32 for bps <= 17 and maybe higher */
3973 unsigned partition, partition_sample, partition_samples, residual_sample;
3974 const unsigned partitions = 1u << partition_order;
3975 const unsigned default_partition_samples = blocksize >> partition_order;
3977 FLAC__ASSERT(default_partition_samples > predictor_order);
3979 for(partition = residual_sample = 0; partition < partitions; partition++) {
3980 partition_samples = default_partition_samples;
3982 partition_samples -= predictor_order;
3983 abs_residual_partition_sum = 0;
3984 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++, residual_sample++) {
3985 #if defined _MSC_VER && _MSC_VER <= 1200
3986 /* OPT: abs() may be faster for some compilers */
3987 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3989 const FLAC__int32 r = residual[residual_sample];
3991 abs_residual_partition_sum -= r;
3993 abs_residual_partition_sum += r;
3996 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3998 to_partition = partitions;
4002 /* now merge partitions for lower orders */
4003 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
4006 const unsigned partitions = 1u << partition_order;
4007 for(i = 0; i < partitions; i++) {
4008 s = abs_residual_partition_sums[from_partition];
4010 abs_residual_partition_sums[to_partition] = s + abs_residual_partition_sums[from_partition];
4017 void precompute_partition_info_escapes_(
4018 const FLAC__int32 residual[],
4019 unsigned raw_bits_per_partition[],
4020 unsigned residual_samples,
4021 unsigned predictor_order,
4022 unsigned min_partition_order,
4023 unsigned max_partition_order
4026 int partition_order;
4027 unsigned from_partition, to_partition = 0;
4028 const unsigned blocksize = residual_samples + predictor_order;
4030 /* first do max_partition_order */
4031 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
4034 unsigned partition, partition_sample, partition_samples, residual_sample;
4035 const unsigned partitions = 1u << partition_order;
4036 const unsigned default_partition_samples = blocksize >> partition_order;
4038 FLAC__ASSERT(default_partition_samples > predictor_order);
4040 for(partition = residual_sample = 0; partition < partitions; partition++) {
4041 partition_samples = default_partition_samples;
4043 partition_samples -= predictor_order;
4045 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
4046 r = residual[residual_sample++];
4052 /* now we know all residual values are in the range [-rmax-1,rmax] */
4053 raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1;
4055 to_partition = partitions;
4056 break; /*@@@ yuck, should remove the 'for' loop instead */
4059 /* now merge partitions for lower orders */
4060 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
4063 const unsigned partitions = 1u << partition_order;
4064 for(i = 0; i < partitions; i++) {
4065 m = raw_bits_per_partition[from_partition];
4067 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
4074 #ifdef EXACT_RICE_BITS_CALCULATION
4075 static __inline unsigned count_rice_bits_in_partition_(
4076 const unsigned rice_parameter,
4077 const unsigned partition_samples,
4078 const FLAC__int32 *residual
4081 unsigned i, partition_bits =
4082 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
4083 (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
4085 for(i = 0; i < partition_samples; i++)
4086 partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
4087 return partition_bits;
4090 static __inline unsigned count_rice_bits_in_partition_(
4091 const unsigned rice_parameter,
4092 const unsigned partition_samples,
4093 const FLAC__uint64 abs_residual_partition_sum
4097 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
4098 (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
4101 (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
4102 : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
4104 - (partition_samples >> 1)
4105 /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
4106 * The actual number of bits used is closer to the sum for all i in the partition of abs(residual[i])>>(rice_parameter-1)
4107 * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
4108 * So the subtraction term tries to guess how many extra bits were contributed.
4109 * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
4115 FLAC__bool set_partitioned_rice_(
4116 #ifdef EXACT_RICE_BITS_CALCULATION
4117 const FLAC__int32 residual[],
4119 const FLAC__uint64 abs_residual_partition_sums[],
4120 const unsigned raw_bits_per_partition[],
4121 const unsigned residual_samples,
4122 const unsigned predictor_order,
4123 const unsigned suggested_rice_parameter,
4124 const unsigned rice_parameter_search_dist,
4125 const unsigned partition_order,
4126 const FLAC__bool search_for_escapes,
4127 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4131 unsigned rice_parameter, partition_bits;
4132 unsigned best_partition_bits, best_rice_parameter = 0;
4133 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
4134 unsigned *parameters, *raw_bits;
4135 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4136 unsigned min_rice_parameter, max_rice_parameter;
4138 (void)rice_parameter_search_dist;
4141 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
4143 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
4144 parameters = partitioned_rice_contents->parameters;
4145 raw_bits = partitioned_rice_contents->raw_bits;
4147 if(partition_order == 0) {
4148 best_partition_bits = 0xffffffff;
4149 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4150 if(rice_parameter_search_dist) {
4151 if(suggested_rice_parameter < rice_parameter_search_dist)
4152 min_rice_parameter = 0;
4154 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
4155 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
4156 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4157 #ifdef DEBUG_VERBOSE
4158 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4160 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4164 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
4166 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4168 rice_parameter = suggested_rice_parameter;
4170 #ifdef EXACT_RICE_BITS_CALCULATION
4171 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual);
4173 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]);
4175 if(partition_bits < best_partition_bits) {
4176 best_rice_parameter = rice_parameter;
4177 best_partition_bits = partition_bits;
4179 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4182 if(search_for_escapes) {
4183 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;
4184 if(partition_bits <= best_partition_bits) {
4185 raw_bits[0] = raw_bits_per_partition[0];
4186 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4187 best_partition_bits = partition_bits;
4190 parameters[0] = best_rice_parameter;
4191 bits_ += best_partition_bits;
4194 unsigned partition, residual_sample;
4195 unsigned partition_samples;
4196 FLAC__uint64 mean, k;
4197 const unsigned partitions = 1u << partition_order;
4198 for(partition = residual_sample = 0; partition < partitions; partition++) {
4199 partition_samples = (residual_samples+predictor_order) >> partition_order;
4200 if(partition == 0) {
4201 if(partition_samples <= predictor_order)
4204 partition_samples -= predictor_order;
4206 mean = abs_residual_partition_sums[partition];
4207 /* we are basically calculating the size in bits of the
4208 * average residual magnitude in the partition:
4209 * rice_parameter = floor(log2(mean/partition_samples))
4210 * 'mean' is not a good name for the variable, it is
4211 * actually the sum of magnitudes of all residual values
4212 * in the partition, so the actual mean is
4213 * mean/partition_samples
4215 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4217 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4218 #ifdef DEBUG_VERBOSE
4219 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4221 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4224 best_partition_bits = 0xffffffff;
4225 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4226 if(rice_parameter_search_dist) {
4227 if(rice_parameter < rice_parameter_search_dist)
4228 min_rice_parameter = 0;
4230 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4231 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4232 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
4233 #ifdef DEBUG_VERBOSE
4234 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
4236 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
4240 min_rice_parameter = max_rice_parameter = rice_parameter;
4242 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4244 #ifdef EXACT_RICE_BITS_CALCULATION
4245 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample);
4247 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]);
4249 if(partition_bits < best_partition_bits) {
4250 best_rice_parameter = rice_parameter;
4251 best_partition_bits = partition_bits;
4253 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4256 if(search_for_escapes) {
4257 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;
4258 if(partition_bits <= best_partition_bits) {
4259 raw_bits[partition] = raw_bits_per_partition[partition];
4260 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
4261 best_partition_bits = partition_bits;
4264 parameters[partition] = best_rice_parameter;
4265 bits_ += best_partition_bits;
4266 residual_sample += partition_samples;
4274 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4279 for(i = 0; i < samples && !(x&1); i++)
4286 for(shift = 0; !(x&1); shift++)
4291 for(i = 0; i < samples; i++)
4292 signal[i] >>= shift;
4298 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4302 for(channel = 0; channel < channels; channel++)
4303 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4305 fifo->tail += wide_samples;
4307 FLAC__ASSERT(fifo->tail <= fifo->size);
4310 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4313 unsigned sample, wide_sample;
4314 unsigned tail = fifo->tail;
4316 sample = input_offset * channels;
4317 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4318 for(channel = 0; channel < channels; channel++)
4319 fifo->data[channel][tail] = input[sample++];
4324 FLAC__ASSERT(fifo->tail <= fifo->size);
4327 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4329 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4330 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4333 if(encoder->private_->verify.needs_magic_hack) {
4334 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4335 *bytes = FLAC__STREAM_SYNC_LENGTH;
4336 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4337 encoder->private_->verify.needs_magic_hack = false;
4340 if(encoded_bytes == 0) {
4342 * If we get here, a FIFO underflow has occurred,
4343 * which means there is a bug somewhere.
4346 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4348 else if(encoded_bytes < *bytes)
4349 *bytes = encoded_bytes;
4350 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4351 encoder->private_->verify.output.data += *bytes;
4352 encoder->private_->verify.output.bytes -= *bytes;
4355 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4358 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4360 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4362 const unsigned channels = frame->header.channels;
4363 const unsigned blocksize = frame->header.blocksize;
4364 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4368 for(channel = 0; channel < channels; channel++) {
4369 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4370 unsigned i, sample = 0;
4371 FLAC__int32 expect = 0, got = 0;
4373 for(i = 0; i < blocksize; i++) {
4374 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4376 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4377 got = (FLAC__int32)buffer[channel][i];
4381 FLAC__ASSERT(i < blocksize);
4382 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4383 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4384 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4385 encoder->private_->verify.error_stats.channel = channel;
4386 encoder->private_->verify.error_stats.sample = sample;
4387 encoder->private_->verify.error_stats.expected = expect;
4388 encoder->private_->verify.error_stats.got = got;
4389 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4390 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4393 /* dequeue the frame from the fifo */
4394 encoder->private_->verify.input_fifo.tail -= blocksize;
4395 FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
4396 for(channel = 0; channel < channels; channel++)
4397 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]));
4398 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4401 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4403 (void)decoder, (void)metadata, (void)client_data;
4406 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4408 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4409 (void)decoder, (void)status;
4410 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4413 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4417 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4419 if (feof(encoder->private_->file))
4420 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4421 else if (ferror(encoder->private_->file))
4422 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4424 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4427 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4431 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
4432 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4434 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4437 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4443 offset = ftello(encoder->private_->file);
4446 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4449 *absolute_byte_offset = (FLAC__uint64)offset;
4450 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4454 #ifdef FLAC__VALGRIND_TESTING
4455 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4457 size_t ret = fwrite(ptr, size, nmemb, stream);
4463 #define local__fwrite fwrite
4466 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4468 (void)client_data, (void)current_frame;
4470 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4471 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4473 /* We would like to be able to use 'samples > 0' in the
4474 * clause here but currently because of the nature of our
4475 * Ogg writing implementation, 'samples' is always 0 (see
4476 * ogg_encoder_aspect.c). The downside is extra progress
4479 encoder->private_->is_ogg? true :
4484 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4485 * because at this point in the callback chain, the stats
4486 * have not been updated. Only after we return and control
4487 * gets back to write_frame_() are the stats updated
4489 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);
4491 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4494 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4498 * This will forcibly set stdout to binary mode (for OSes that require it)
4500 FILE *get_binary_stdout_(void)
4502 /* if something breaks here it is probably due to the presence or
4503 * absence of an underscore before the identifiers 'setmode',
4504 * 'fileno', and/or 'O_BINARY'; check your system header files.
4506 #if defined _MSC_VER || defined __MINGW32__
4507 _setmode(_fileno(stdout), _O_BINARY);
4508 #elif defined __CYGWIN__
4509 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4510 setmode(_fileno(stdout), _O_BINARY);
4511 #elif defined __EMX__
4512 setmode(fileno(stdout), O_BINARY);