1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005,2006 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 <= 1200 || 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
97 FLAC__int32 *data[FLAC__MAX_CHANNELS];
98 unsigned size; /* of each data[] in samples */
103 const FLAC__byte *data;
109 ENCODER_IN_MAGIC = 0,
110 ENCODER_IN_METADATA = 1,
114 static struct CompressionLevels {
115 FLAC__bool do_mid_side_stereo;
116 FLAC__bool loose_mid_side_stereo;
117 unsigned max_lpc_order;
118 unsigned qlp_coeff_precision;
119 FLAC__bool do_qlp_coeff_prec_search;
120 FLAC__bool do_escape_coding;
121 FLAC__bool do_exhaustive_model_search;
122 unsigned min_residual_partition_order;
123 unsigned max_residual_partition_order;
124 unsigned rice_parameter_search_dist;
125 } compression_levels_[] = {
126 { false, false, 0, 0, false, false, false, 2, 2, 0 },
127 { true , true , 0, 0, false, false, false, 2, 2, 0 },
128 { true , false, 0, 0, false, false, false, 0, 3, 0 },
129 { false, false, 6, 0, false, false, false, 3, 3, 0 },
130 { true , true , 8, 0, false, false, false, 3, 3, 0 },
131 { true , false, 8, 0, false, false, false, 3, 3, 0 },
132 { true , false, 8, 0, false, false, false, 0, 4, 0 },
133 { true , false, 8, 0, false, false, true , 0, 6, 0 },
134 { true , false, 12, 0, false, false, true , 0, 6, 0 }
138 /***********************************************************************
140 * Private class method prototypes
142 ***********************************************************************/
144 static void set_defaults_(FLAC__StreamEncoder *encoder);
145 static void free_(FLAC__StreamEncoder *encoder);
146 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
147 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
148 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
149 static void update_metadata_(const FLAC__StreamEncoder *encoder);
151 static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
153 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
154 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
156 static FLAC__bool process_subframe_(
157 FLAC__StreamEncoder *encoder,
158 unsigned min_partition_order,
159 unsigned max_partition_order,
160 const FLAC__FrameHeader *frame_header,
161 unsigned subframe_bps,
162 const FLAC__int32 integer_signal[],
163 #ifndef FLAC__INTEGER_ONLY_LIBRARY
164 const FLAC__real real_signal[],
166 FLAC__Subframe *subframe[2],
167 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
168 FLAC__int32 *residual[2],
169 unsigned *best_subframe,
173 static FLAC__bool add_subframe_(
174 FLAC__StreamEncoder *encoder,
176 unsigned subframe_bps,
177 const FLAC__Subframe *subframe,
178 FLAC__BitWriter *frame
181 static unsigned evaluate_constant_subframe_(
182 FLAC__StreamEncoder *encoder,
183 const FLAC__int32 signal,
185 unsigned subframe_bps,
186 FLAC__Subframe *subframe
189 static unsigned evaluate_fixed_subframe_(
190 FLAC__StreamEncoder *encoder,
191 const FLAC__int32 signal[],
192 FLAC__int32 residual[],
193 FLAC__uint64 abs_residual_partition_sums[],
194 unsigned raw_bits_per_partition[],
196 unsigned subframe_bps,
198 unsigned rice_parameter,
199 unsigned min_partition_order,
200 unsigned max_partition_order,
201 FLAC__bool do_escape_coding,
202 unsigned rice_parameter_search_dist,
203 FLAC__Subframe *subframe,
204 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
207 #ifndef FLAC__INTEGER_ONLY_LIBRARY
208 static unsigned evaluate_lpc_subframe_(
209 FLAC__StreamEncoder *encoder,
210 const FLAC__int32 signal[],
211 FLAC__int32 residual[],
212 FLAC__uint64 abs_residual_partition_sums[],
213 unsigned raw_bits_per_partition[],
214 const FLAC__real lp_coeff[],
216 unsigned subframe_bps,
218 unsigned qlp_coeff_precision,
219 unsigned rice_parameter,
220 unsigned min_partition_order,
221 unsigned max_partition_order,
222 FLAC__bool do_escape_coding,
223 unsigned rice_parameter_search_dist,
224 FLAC__Subframe *subframe,
225 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
229 static unsigned evaluate_verbatim_subframe_(
230 FLAC__StreamEncoder *encoder,
231 const FLAC__int32 signal[],
233 unsigned subframe_bps,
234 FLAC__Subframe *subframe
237 static unsigned find_best_partition_order_(
238 struct FLAC__StreamEncoderPrivate *private_,
239 const FLAC__int32 residual[],
240 FLAC__uint64 abs_residual_partition_sums[],
241 unsigned raw_bits_per_partition[],
242 unsigned residual_samples,
243 unsigned predictor_order,
244 unsigned rice_parameter,
245 unsigned min_partition_order,
246 unsigned max_partition_order,
247 FLAC__bool do_escape_coding,
248 unsigned rice_parameter_search_dist,
249 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
252 static void precompute_partition_info_sums_(
253 const FLAC__int32 residual[],
254 FLAC__uint64 abs_residual_partition_sums[],
255 unsigned residual_samples,
256 unsigned predictor_order,
257 unsigned min_partition_order,
258 unsigned max_partition_order
261 static void precompute_partition_info_escapes_(
262 const FLAC__int32 residual[],
263 unsigned raw_bits_per_partition[],
264 unsigned residual_samples,
265 unsigned predictor_order,
266 unsigned min_partition_order,
267 unsigned max_partition_order
270 static FLAC__bool set_partitioned_rice_(
271 #ifdef EXACT_RICE_BITS_CALCULATION
272 const FLAC__int32 residual[],
274 const FLAC__uint64 abs_residual_partition_sums[],
275 const unsigned raw_bits_per_partition[],
276 const unsigned residual_samples,
277 const unsigned predictor_order,
278 const unsigned suggested_rice_parameter,
279 const unsigned rice_parameter_search_dist,
280 const unsigned partition_order,
281 const FLAC__bool search_for_escapes,
282 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
286 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
288 /* verify-related routines: */
289 static void append_to_verify_fifo_(
290 verify_input_fifo *fifo,
291 const FLAC__int32 * const input[],
292 unsigned input_offset,
294 unsigned wide_samples
297 static void append_to_verify_fifo_interleaved_(
298 verify_input_fifo *fifo,
299 const FLAC__int32 input[],
300 unsigned input_offset,
302 unsigned wide_samples
305 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
306 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
307 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
308 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
310 static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
311 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
312 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
313 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);
314 static FILE *get_binary_stdout_();
317 /***********************************************************************
321 ***********************************************************************/
323 typedef struct FLAC__StreamEncoderPrivate {
324 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
325 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
326 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
327 #ifndef FLAC__INTEGER_ONLY_LIBRARY
328 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* the floating-point version of the input signal */
329 FLAC__real *real_signal_mid_side[2]; /* the floating-point version of the mid-side input signal (stereo only) */
330 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
331 FLAC__real *windowed_signal; /* the real_signal[] * current window[] */
333 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
334 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
335 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
336 FLAC__int32 *residual_workspace_mid_side[2][2];
337 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
338 FLAC__Subframe subframe_workspace_mid_side[2][2];
339 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
340 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
341 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
342 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
343 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
344 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
345 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
346 unsigned best_subframe_mid_side[2];
347 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
348 unsigned best_subframe_bits_mid_side[2];
349 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
350 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
351 FLAC__BitWriter *frame; /* the current frame being worked on */
352 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
353 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
354 FLAC__ChannelAssignment last_channel_assignment;
355 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
356 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
357 unsigned current_sample_number;
358 unsigned current_frame_number;
359 struct FLAC__MD5Context md5context;
360 FLAC__CPUInfo cpuinfo;
361 #ifndef FLAC__INTEGER_ONLY_LIBRARY
362 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
364 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
366 #ifndef FLAC__INTEGER_ONLY_LIBRARY
367 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
368 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[]);
369 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[]);
370 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[]);
372 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
373 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
374 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
375 FLAC__bool disable_constant_subframes;
376 FLAC__bool disable_fixed_subframes;
377 FLAC__bool disable_verbatim_subframes;
381 FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
382 FLAC__StreamEncoderSeekCallback seek_callback;
383 FLAC__StreamEncoderTellCallback tell_callback;
384 FLAC__StreamEncoderWriteCallback write_callback;
385 FLAC__StreamEncoderMetadataCallback metadata_callback;
386 FLAC__StreamEncoderProgressCallback progress_callback;
388 unsigned first_seekpoint_to_check;
389 FILE *file; /* only used when encoding to a file */
390 FLAC__uint64 bytes_written;
391 FLAC__uint64 samples_written;
392 unsigned frames_written;
393 unsigned total_frames_estimate;
394 /* unaligned (original) pointers to allocated data */
395 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
396 FLAC__int32 *integer_signal_mid_side_unaligned[2];
397 #ifndef FLAC__INTEGER_ONLY_LIBRARY
398 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS];
399 FLAC__real *real_signal_mid_side_unaligned[2];
400 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
401 FLAC__real *windowed_signal_unaligned;
403 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
404 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
405 FLAC__uint64 *abs_residual_partition_sums_unaligned;
406 unsigned *raw_bits_per_partition_unaligned;
408 * These fields have been moved here from private function local
409 * declarations merely to save stack space during encoding.
411 #ifndef FLAC__INTEGER_ONLY_LIBRARY
412 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
414 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
416 * The data for the verify section
419 FLAC__StreamDecoder *decoder;
420 EncoderStateHint state_hint;
421 FLAC__bool needs_magic_hack;
422 verify_input_fifo input_fifo;
423 verify_output output;
425 FLAC__uint64 absolute_sample;
426 unsigned frame_number;
429 FLAC__int32 expected;
433 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
434 } FLAC__StreamEncoderPrivate;
436 /***********************************************************************
438 * Public static class data
440 ***********************************************************************/
442 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
443 "FLAC__STREAM_ENCODER_OK",
444 "FLAC__STREAM_ENCODER_UNINITIALIZED",
445 "FLAC__STREAM_ENCODER_OGG_ERROR",
446 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
447 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
448 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
449 "FLAC__STREAM_ENCODER_IO_ERROR",
450 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
451 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
454 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
455 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
456 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
457 "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
458 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
459 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
460 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
461 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
462 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
463 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
464 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
465 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
466 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
467 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
468 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
471 FLAC_API const char * const FLAC__treamEncoderReadStatusString[] = {
472 "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
473 "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
474 "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
475 "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
478 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
479 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
480 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
483 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
484 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
485 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
486 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
489 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
490 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
491 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
492 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
495 /* Number of samples that will be overread to watch for end of stream. By
496 * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
497 * always try to read blocksize+1 samples before encoding a block, so that
498 * even if the stream has a total sample count that is an integral multiple
499 * of the blocksize, we will still notice when we are encoding the last
500 * block. This is needed, for example, to correctly set the end-of-stream
501 * marker in Ogg FLAC.
503 * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
504 * not really any reason to change it.
506 static const unsigned OVERREAD_ = 1;
508 /***********************************************************************
510 * Class constructor/destructor
513 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new()
515 FLAC__StreamEncoder *encoder;
518 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
520 encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
525 encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
526 if(encoder->protected_ == 0) {
531 encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
532 if(encoder->private_ == 0) {
533 free(encoder->protected_);
538 encoder->private_->frame = FLAC__bitwriter_new();
539 if(encoder->private_->frame == 0) {
540 free(encoder->private_);
541 free(encoder->protected_);
546 encoder->private_->file = 0;
548 set_defaults_(encoder);
550 encoder->private_->is_being_deleted = false;
552 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
553 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
554 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
556 for(i = 0; i < 2; i++) {
557 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
558 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
560 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
561 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
562 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
564 for(i = 0; i < 2; i++) {
565 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
566 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
569 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
570 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
571 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
573 for(i = 0; i < 2; i++) {
574 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
575 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
577 for(i = 0; i < 2; i++)
578 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
580 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
585 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
589 FLAC__ASSERT(0 != encoder);
590 FLAC__ASSERT(0 != encoder->protected_);
591 FLAC__ASSERT(0 != encoder->private_);
592 FLAC__ASSERT(0 != encoder->private_->frame);
594 encoder->private_->is_being_deleted = true;
596 (void)FLAC__stream_encoder_finish(encoder);
598 if(0 != encoder->private_->verify.decoder)
599 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
601 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
602 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
603 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
605 for(i = 0; i < 2; i++) {
606 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
607 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
609 for(i = 0; i < 2; i++)
610 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
612 FLAC__bitwriter_delete(encoder->private_->frame);
613 free(encoder->private_);
614 free(encoder->protected_);
618 /***********************************************************************
620 * Public class methods
622 ***********************************************************************/
624 static FLAC__StreamEncoderInitStatus init_stream_internal_(
625 FLAC__StreamEncoder *encoder,
626 FLAC__StreamEncoderReadCallback read_callback,
627 FLAC__StreamEncoderWriteCallback write_callback,
628 FLAC__StreamEncoderSeekCallback seek_callback,
629 FLAC__StreamEncoderTellCallback tell_callback,
630 FLAC__StreamEncoderMetadataCallback metadata_callback,
636 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
638 FLAC__ASSERT(0 != encoder);
640 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
641 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
645 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
648 if(0 == write_callback || (seek_callback && 0 == tell_callback))
649 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
651 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
652 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
654 if(encoder->protected_->channels != 2) {
655 encoder->protected_->do_mid_side_stereo = false;
656 encoder->protected_->loose_mid_side_stereo = false;
658 else if(!encoder->protected_->do_mid_side_stereo)
659 encoder->protected_->loose_mid_side_stereo = false;
661 if(encoder->protected_->bits_per_sample >= 32)
662 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
664 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
665 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
667 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
668 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
670 if(encoder->protected_->blocksize == 0) {
671 if(encoder->protected_->max_lpc_order == 0)
672 encoder->protected_->blocksize = 1152;
674 encoder->protected_->blocksize = 4608;
677 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
678 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
680 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
681 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
683 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
684 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
686 if(encoder->protected_->qlp_coeff_precision == 0) {
687 if(encoder->protected_->bits_per_sample < 16) {
688 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
689 /* @@@ until then we'll make a guess */
690 encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
692 else if(encoder->protected_->bits_per_sample == 16) {
693 if(encoder->protected_->blocksize <= 192)
694 encoder->protected_->qlp_coeff_precision = 7;
695 else if(encoder->protected_->blocksize <= 384)
696 encoder->protected_->qlp_coeff_precision = 8;
697 else if(encoder->protected_->blocksize <= 576)
698 encoder->protected_->qlp_coeff_precision = 9;
699 else if(encoder->protected_->blocksize <= 1152)
700 encoder->protected_->qlp_coeff_precision = 10;
701 else if(encoder->protected_->blocksize <= 2304)
702 encoder->protected_->qlp_coeff_precision = 11;
703 else if(encoder->protected_->blocksize <= 4608)
704 encoder->protected_->qlp_coeff_precision = 12;
706 encoder->protected_->qlp_coeff_precision = 13;
709 if(encoder->protected_->blocksize <= 384)
710 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
711 else if(encoder->protected_->blocksize <= 1152)
712 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
714 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
716 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
718 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
719 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
721 if(encoder->protected_->streamable_subset) {
723 encoder->protected_->blocksize != 192 &&
724 encoder->protected_->blocksize != 576 &&
725 encoder->protected_->blocksize != 1152 &&
726 encoder->protected_->blocksize != 2304 &&
727 encoder->protected_->blocksize != 4608 &&
728 encoder->protected_->blocksize != 256 &&
729 encoder->protected_->blocksize != 512 &&
730 encoder->protected_->blocksize != 1024 &&
731 encoder->protected_->blocksize != 2048 &&
732 encoder->protected_->blocksize != 4096 &&
733 encoder->protected_->blocksize != 8192 &&
734 encoder->protected_->blocksize != 16384
736 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
738 encoder->protected_->sample_rate != 8000 &&
739 encoder->protected_->sample_rate != 16000 &&
740 encoder->protected_->sample_rate != 22050 &&
741 encoder->protected_->sample_rate != 24000 &&
742 encoder->protected_->sample_rate != 32000 &&
743 encoder->protected_->sample_rate != 44100 &&
744 encoder->protected_->sample_rate != 48000 &&
745 encoder->protected_->sample_rate != 96000
747 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
749 encoder->protected_->bits_per_sample != 8 &&
750 encoder->protected_->bits_per_sample != 12 &&
751 encoder->protected_->bits_per_sample != 16 &&
752 encoder->protected_->bits_per_sample != 20 &&
753 encoder->protected_->bits_per_sample != 24
755 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
756 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
757 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
759 encoder->protected_->sample_rate <= 48000 &&
761 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
762 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
765 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
769 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
770 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
771 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
772 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
775 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
776 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
778 for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
779 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
780 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
782 encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
783 encoder->protected_->metadata[0] = vc;
789 /* keep track of any SEEKTABLE block */
790 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
792 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
793 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
794 encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
795 break; /* take only the first one */
800 /* validate metadata */
801 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
802 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
803 metadata_has_seektable = false;
804 metadata_has_vorbis_comment = false;
805 metadata_picture_has_type1 = false;
806 metadata_picture_has_type2 = false;
807 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
808 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
809 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
810 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
811 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
812 if(metadata_has_seektable) /* only one is allowed */
813 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
814 metadata_has_seektable = true;
815 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
816 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
818 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
819 if(metadata_has_vorbis_comment) /* only one is allowed */
820 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
821 metadata_has_vorbis_comment = true;
823 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
824 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
825 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
827 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
828 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
829 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
830 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
831 if(metadata_picture_has_type1) /* there should only be 1 per stream */
832 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
833 metadata_picture_has_type1 = true;
834 /* standard icon must be 32x32 pixel PNG */
836 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
838 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
839 m->data.picture.width != 32 ||
840 m->data.picture.height != 32
843 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
845 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
846 if(metadata_picture_has_type2) /* there should only be 1 per stream */
847 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
848 metadata_picture_has_type2 = true;
853 encoder->private_->input_capacity = 0;
854 for(i = 0; i < encoder->protected_->channels; i++) {
855 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
856 #ifndef FLAC__INTEGER_ONLY_LIBRARY
857 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
860 for(i = 0; i < 2; i++) {
861 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
862 #ifndef FLAC__INTEGER_ONLY_LIBRARY
863 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
866 #ifndef FLAC__INTEGER_ONLY_LIBRARY
867 for(i = 0; i < encoder->protected_->num_apodizations; i++)
868 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
869 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
871 for(i = 0; i < encoder->protected_->channels; i++) {
872 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
873 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
874 encoder->private_->best_subframe[i] = 0;
876 for(i = 0; i < 2; i++) {
877 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
878 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
879 encoder->private_->best_subframe_mid_side[i] = 0;
881 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
882 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
883 #ifndef FLAC__INTEGER_ONLY_LIBRARY
884 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
886 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
887 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
888 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
889 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
890 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
891 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
892 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);
894 if(encoder->private_->loose_mid_side_stereo_frames == 0)
895 encoder->private_->loose_mid_side_stereo_frames = 1;
896 encoder->private_->loose_mid_side_stereo_frame_count = 0;
897 encoder->private_->current_sample_number = 0;
898 encoder->private_->current_frame_number = 0;
900 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
901 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? */
902 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
905 * get the CPU info and set the function pointers
907 FLAC__cpu_info(&encoder->private_->cpuinfo);
908 /* first default to the non-asm routines */
909 #ifndef FLAC__INTEGER_ONLY_LIBRARY
910 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
912 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
913 #ifndef FLAC__INTEGER_ONLY_LIBRARY
914 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
915 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
916 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
918 /* now override with asm where appropriate */
919 #ifndef FLAC__INTEGER_ONLY_LIBRARY
920 # ifndef FLAC__NO_ASM
921 if(encoder->private_->cpuinfo.use_asm) {
922 # ifdef FLAC__CPU_IA32
923 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
924 # ifdef FLAC__HAS_NASM
926 if(encoder->private_->cpuinfo.data.ia32.sse) {
927 if(encoder->protected_->max_lpc_order < 4)
928 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
929 else if(encoder->protected_->max_lpc_order < 8)
930 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
931 else if(encoder->protected_->max_lpc_order < 12)
932 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
934 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
937 # endif /* FLAC__SSE_OS */
938 if(encoder->private_->cpuinfo.data.ia32._3dnow)
939 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
941 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
942 if(encoder->private_->cpuinfo.data.ia32.mmx) {
943 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
944 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
947 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
948 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
950 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
951 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
952 # endif /* FLAC__HAS_NASM */
953 # endif /* FLAC__CPU_IA32 */
955 # endif /* !FLAC__NO_ASM */
956 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
957 /* finally override based on wide-ness if necessary */
958 if(encoder->private_->use_wide_by_block) {
959 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
962 /* set state to OK; from here on, errors are fatal and we'll override the state then */
963 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
966 encoder->private_->is_ogg = is_ogg;
967 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
968 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
969 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
973 encoder->private_->read_callback = read_callback;
974 encoder->private_->write_callback = write_callback;
975 encoder->private_->seek_callback = seek_callback;
976 encoder->private_->tell_callback = tell_callback;
977 encoder->private_->metadata_callback = metadata_callback;
978 encoder->private_->client_data = client_data;
980 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
981 /* the above function sets the state for us in case of an error */
982 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
985 if(!FLAC__bitwriter_init(encoder->private_->frame)) {
986 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
987 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
991 * Set up the verify stuff if necessary
993 if(encoder->protected_->verify) {
995 * First, set up the fifo which will hold the
996 * original signal to compare against
998 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
999 for(i = 0; i < encoder->protected_->channels; i++) {
1000 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size))) {
1001 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1002 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1005 encoder->private_->verify.input_fifo.tail = 0;
1008 * Now set up a stream decoder for verification
1010 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
1011 if(0 == encoder->private_->verify.decoder) {
1012 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1013 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1016 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) {
1017 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1018 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1021 encoder->private_->verify.error_stats.absolute_sample = 0;
1022 encoder->private_->verify.error_stats.frame_number = 0;
1023 encoder->private_->verify.error_stats.channel = 0;
1024 encoder->private_->verify.error_stats.sample = 0;
1025 encoder->private_->verify.error_stats.expected = 0;
1026 encoder->private_->verify.error_stats.got = 0;
1029 * These must be done before we write any metadata, because that
1030 * calls the write_callback, which uses these values.
1032 encoder->private_->first_seekpoint_to_check = 0;
1033 encoder->private_->samples_written = 0;
1034 encoder->protected_->streaminfo_offset = 0;
1035 encoder->protected_->seektable_offset = 0;
1036 encoder->protected_->audio_offset = 0;
1039 * write the stream header
1041 if(encoder->protected_->verify)
1042 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1043 if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1044 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1045 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1047 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1048 /* the above function sets the state for us in case of an error */
1049 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1053 * write the STREAMINFO metadata block
1055 if(encoder->protected_->verify)
1056 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1057 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1058 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1059 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1060 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1061 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1062 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1063 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1064 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1065 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1066 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1067 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1068 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1069 FLAC__MD5Init(&encoder->private_->md5context);
1070 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1071 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1072 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1074 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1075 /* the above function sets the state for us in case of an error */
1076 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1080 * Now that the STREAMINFO block is written, we can init this to an
1081 * absurdly-high value...
1083 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1084 /* ... and clear this to 0 */
1085 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1088 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1089 * if not, we will write an empty one (FLAC__add_metadata_block()
1090 * automatically supplies the vendor string).
1092 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1093 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1094 * true it will have already insured that the metadata list is properly
1097 if(!metadata_has_vorbis_comment) {
1098 FLAC__StreamMetadata vorbis_comment;
1099 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1100 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1101 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1102 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1103 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1104 vorbis_comment.data.vorbis_comment.num_comments = 0;
1105 vorbis_comment.data.vorbis_comment.comments = 0;
1106 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1107 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1108 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1110 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1111 /* the above function sets the state for us in case of an error */
1112 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1117 * write the user's metadata blocks
1119 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1120 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1121 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1122 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1123 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1125 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1126 /* the above function sets the state for us in case of an error */
1127 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1131 /* now that all the metadata is written, we save the stream offset */
1132 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 */
1133 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1134 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1137 if(encoder->protected_->verify)
1138 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1140 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1143 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1144 FLAC__StreamEncoder *encoder,
1145 FLAC__StreamEncoderWriteCallback write_callback,
1146 FLAC__StreamEncoderSeekCallback seek_callback,
1147 FLAC__StreamEncoderTellCallback tell_callback,
1148 FLAC__StreamEncoderMetadataCallback metadata_callback,
1152 return init_stream_internal_(
1154 /*read_callback=*/0,
1164 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1165 FLAC__StreamEncoder *encoder,
1166 FLAC__StreamEncoderReadCallback read_callback,
1167 FLAC__StreamEncoderWriteCallback write_callback,
1168 FLAC__StreamEncoderSeekCallback seek_callback,
1169 FLAC__StreamEncoderTellCallback tell_callback,
1170 FLAC__StreamEncoderMetadataCallback metadata_callback,
1174 return init_stream_internal_(
1186 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1187 FLAC__StreamEncoder *encoder,
1189 FLAC__StreamEncoderProgressCallback progress_callback,
1194 FLAC__StreamEncoderInitStatus init_status;
1196 FLAC__ASSERT(0 != encoder);
1197 FLAC__ASSERT(0 != file);
1199 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1200 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1202 /* double protection */
1204 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1205 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1209 * To make sure that our file does not go unclosed after an error, we
1210 * must assign the FILE pointer before any further error can occur in
1214 file = get_binary_stdout_(); /* just to be safe */
1216 encoder->private_->file = file;
1218 encoder->private_->progress_callback = progress_callback;
1219 encoder->private_->bytes_written = 0;
1220 encoder->private_->samples_written = 0;
1221 encoder->private_->frames_written = 0;
1223 init_status = init_stream_internal_(
1225 encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
1226 file_write_callback_,
1227 encoder->private_->file == stdout? 0 : file_seek_callback_,
1228 encoder->private_->file == stdout? 0 : file_tell_callback_,
1229 /*metadata_callback=*/0,
1233 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1234 /* the above function sets the state for us in case of an error */
1239 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1241 FLAC__ASSERT(blocksize != 0);
1242 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1248 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1249 FLAC__StreamEncoder *encoder,
1251 FLAC__StreamEncoderProgressCallback progress_callback,
1255 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1258 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1259 FLAC__StreamEncoder *encoder,
1261 FLAC__StreamEncoderProgressCallback progress_callback,
1265 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1268 static FLAC__StreamEncoderInitStatus init_file_internal_(
1269 FLAC__StreamEncoder *encoder,
1270 const char *filename,
1271 FLAC__StreamEncoderProgressCallback progress_callback,
1278 FLAC__ASSERT(0 != encoder);
1281 * To make sure that our file does not go unclosed after an error, we
1282 * have to do the same entrance checks here that are later performed
1283 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1285 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1286 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1288 file = filename? fopen(filename, "w+b") : stdout;
1291 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1292 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1295 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1298 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
1299 FLAC__StreamEncoder *encoder,
1300 const char *filename,
1301 FLAC__StreamEncoderProgressCallback progress_callback,
1305 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
1308 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1309 FLAC__StreamEncoder *encoder,
1310 const char *filename,
1311 FLAC__StreamEncoderProgressCallback progress_callback,
1315 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1318 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1320 FLAC__bool error = false;
1322 FLAC__ASSERT(0 != encoder);
1323 FLAC__ASSERT(0 != encoder->private_);
1324 FLAC__ASSERT(0 != encoder->protected_);
1326 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1329 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1330 if(encoder->private_->current_sample_number != 0) {
1331 const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
1332 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1333 if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
1338 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1340 if(!encoder->private_->is_being_deleted) {
1341 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
1342 if(encoder->private_->seek_callback) {
1344 if(encoder->private_->is_ogg)
1345 update_ogg_metadata_(encoder);
1348 update_metadata_(encoder);
1350 /* check if an error occurred while updating metadata */
1351 if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
1354 if(encoder->private_->metadata_callback)
1355 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1358 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
1360 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1365 if(0 != encoder->private_->file) {
1366 if(encoder->private_->file != stdout)
1367 fclose(encoder->private_->file);
1368 encoder->private_->file = 0;
1372 if(encoder->private_->is_ogg)
1373 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1377 set_defaults_(encoder);
1380 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1385 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1387 FLAC__ASSERT(0 != encoder);
1388 FLAC__ASSERT(0 != encoder->private_);
1389 FLAC__ASSERT(0 != encoder->protected_);
1390 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1393 /* can't check encoder->private_->is_ogg since that's not set until init time */
1394 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1402 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1404 FLAC__ASSERT(0 != encoder);
1405 FLAC__ASSERT(0 != encoder->private_);
1406 FLAC__ASSERT(0 != encoder->protected_);
1407 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1409 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1410 encoder->protected_->verify = value;
1415 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1417 FLAC__ASSERT(0 != encoder);
1418 FLAC__ASSERT(0 != encoder->private_);
1419 FLAC__ASSERT(0 != encoder->protected_);
1420 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1422 encoder->protected_->streamable_subset = value;
1426 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1428 FLAC__ASSERT(0 != encoder);
1429 FLAC__ASSERT(0 != encoder->private_);
1430 FLAC__ASSERT(0 != encoder->protected_);
1431 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1433 encoder->protected_->channels = value;
1437 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1439 FLAC__ASSERT(0 != encoder);
1440 FLAC__ASSERT(0 != encoder->private_);
1441 FLAC__ASSERT(0 != encoder->protected_);
1442 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1444 encoder->protected_->bits_per_sample = value;
1448 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1450 FLAC__ASSERT(0 != encoder);
1451 FLAC__ASSERT(0 != encoder->private_);
1452 FLAC__ASSERT(0 != encoder->protected_);
1453 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1455 encoder->protected_->sample_rate = value;
1459 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1461 FLAC__bool ok = true;
1462 FLAC__ASSERT(0 != encoder);
1463 FLAC__ASSERT(0 != encoder->private_);
1464 FLAC__ASSERT(0 != encoder->protected_);
1465 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1467 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1468 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1469 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1470 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1473 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1474 /* but it's too hard to specify the string in a locale-specific way */
1476 encoder->protected_->num_apodizations = 1;
1477 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1478 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1480 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1481 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1482 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1483 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1484 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1485 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1486 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1487 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1491 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1493 FLAC__ASSERT(0 != encoder);
1494 FLAC__ASSERT(0 != encoder->private_);
1495 FLAC__ASSERT(0 != encoder->protected_);
1496 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1498 encoder->protected_->blocksize = value;
1502 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1504 FLAC__ASSERT(0 != encoder);
1505 FLAC__ASSERT(0 != encoder->private_);
1506 FLAC__ASSERT(0 != encoder->protected_);
1507 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1509 encoder->protected_->do_mid_side_stereo = value;
1513 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1515 FLAC__ASSERT(0 != encoder);
1516 FLAC__ASSERT(0 != encoder->private_);
1517 FLAC__ASSERT(0 != encoder->protected_);
1518 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1520 encoder->protected_->loose_mid_side_stereo = value;
1524 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1526 FLAC__ASSERT(0 != encoder);
1527 FLAC__ASSERT(0 != encoder->private_);
1528 FLAC__ASSERT(0 != encoder->protected_);
1529 FLAC__ASSERT(0 != specification);
1530 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1532 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1533 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1535 encoder->protected_->num_apodizations = 0;
1537 const char *s = strchr(specification, ';');
1538 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1539 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1540 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1541 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1542 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1543 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1544 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1545 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1546 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1547 else if(n==6 && 0 == strncmp("connes" , specification, n))
1548 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1549 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1550 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1551 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1552 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1553 if (stddev > 0.0 && stddev <= 0.5) {
1554 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1555 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1558 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1559 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1560 else if(n==4 && 0 == strncmp("hann" , specification, n))
1561 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1562 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1563 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1564 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1565 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1566 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1567 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1568 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1569 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1570 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1571 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1572 if (p >= 0.0 && p <= 1.0) {
1573 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1574 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1577 else if(n==5 && 0 == strncmp("welch" , specification, n))
1578 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1579 if (encoder->protected_->num_apodizations == 32)
1582 specification = s+1;
1586 if(encoder->protected_->num_apodizations == 0) {
1587 encoder->protected_->num_apodizations = 1;
1588 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1589 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1595 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1597 FLAC__ASSERT(0 != encoder);
1598 FLAC__ASSERT(0 != encoder->private_);
1599 FLAC__ASSERT(0 != encoder->protected_);
1600 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1602 encoder->protected_->max_lpc_order = value;
1606 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1608 FLAC__ASSERT(0 != encoder);
1609 FLAC__ASSERT(0 != encoder->private_);
1610 FLAC__ASSERT(0 != encoder->protected_);
1611 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1613 encoder->protected_->qlp_coeff_precision = value;
1617 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1619 FLAC__ASSERT(0 != encoder);
1620 FLAC__ASSERT(0 != encoder->private_);
1621 FLAC__ASSERT(0 != encoder->protected_);
1622 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1624 encoder->protected_->do_qlp_coeff_prec_search = value;
1628 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1630 FLAC__ASSERT(0 != encoder);
1631 FLAC__ASSERT(0 != encoder->private_);
1632 FLAC__ASSERT(0 != encoder->protected_);
1633 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1636 /*@@@ deprecated: */
1637 encoder->protected_->do_escape_coding = value;
1644 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1646 FLAC__ASSERT(0 != encoder);
1647 FLAC__ASSERT(0 != encoder->private_);
1648 FLAC__ASSERT(0 != encoder->protected_);
1649 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1651 encoder->protected_->do_exhaustive_model_search = value;
1655 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1657 FLAC__ASSERT(0 != encoder);
1658 FLAC__ASSERT(0 != encoder->private_);
1659 FLAC__ASSERT(0 != encoder->protected_);
1660 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1662 encoder->protected_->min_residual_partition_order = value;
1666 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1668 FLAC__ASSERT(0 != encoder);
1669 FLAC__ASSERT(0 != encoder->private_);
1670 FLAC__ASSERT(0 != encoder->protected_);
1671 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1673 encoder->protected_->max_residual_partition_order = value;
1677 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1679 FLAC__ASSERT(0 != encoder);
1680 FLAC__ASSERT(0 != encoder->private_);
1681 FLAC__ASSERT(0 != encoder->protected_);
1682 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1685 /*@@@ deprecated: */
1686 encoder->protected_->rice_parameter_search_dist = value;
1693 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1695 FLAC__ASSERT(0 != encoder);
1696 FLAC__ASSERT(0 != encoder->private_);
1697 FLAC__ASSERT(0 != encoder->protected_);
1698 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1700 encoder->protected_->total_samples_estimate = value;
1704 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1706 FLAC__ASSERT(0 != encoder);
1707 FLAC__ASSERT(0 != encoder->private_);
1708 FLAC__ASSERT(0 != encoder->protected_);
1709 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1715 /* realloc() does not do exactly what we want so... */
1716 if(encoder->protected_->metadata) {
1717 free(encoder->protected_->metadata);
1718 encoder->protected_->metadata = 0;
1719 encoder->protected_->num_metadata_blocks = 0;
1722 FLAC__StreamMetadata **m;
1723 if(0 == (m = (FLAC__StreamMetadata**)malloc(sizeof(m[0]) * num_blocks)))
1725 memcpy(m, metadata, sizeof(m[0]) * num_blocks);
1726 encoder->protected_->metadata = m;
1727 encoder->protected_->num_metadata_blocks = num_blocks;
1730 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1737 * These three functions are not static, but not publically exposed in
1738 * include/FLAC/ either. They are used by the test suite.
1740 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1742 FLAC__ASSERT(0 != encoder);
1743 FLAC__ASSERT(0 != encoder->private_);
1744 FLAC__ASSERT(0 != encoder->protected_);
1745 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1747 encoder->private_->disable_constant_subframes = value;
1751 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1753 FLAC__ASSERT(0 != encoder);
1754 FLAC__ASSERT(0 != encoder->private_);
1755 FLAC__ASSERT(0 != encoder->protected_);
1756 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1758 encoder->private_->disable_fixed_subframes = value;
1762 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1764 FLAC__ASSERT(0 != encoder);
1765 FLAC__ASSERT(0 != encoder->private_);
1766 FLAC__ASSERT(0 != encoder->protected_);
1767 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1769 encoder->private_->disable_verbatim_subframes = value;
1773 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1775 FLAC__ASSERT(0 != encoder);
1776 FLAC__ASSERT(0 != encoder->private_);
1777 FLAC__ASSERT(0 != encoder->protected_);
1778 return encoder->protected_->state;
1781 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1783 FLAC__ASSERT(0 != encoder);
1784 FLAC__ASSERT(0 != encoder->private_);
1785 FLAC__ASSERT(0 != encoder->protected_);
1786 if(encoder->protected_->verify)
1787 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1789 return FLAC__STREAM_DECODER_UNINITIALIZED;
1792 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1794 FLAC__ASSERT(0 != encoder);
1795 FLAC__ASSERT(0 != encoder->private_);
1796 FLAC__ASSERT(0 != encoder->protected_);
1797 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1798 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1800 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1803 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)
1805 FLAC__ASSERT(0 != encoder);
1806 FLAC__ASSERT(0 != encoder->private_);
1807 FLAC__ASSERT(0 != encoder->protected_);
1808 if(0 != absolute_sample)
1809 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1810 if(0 != frame_number)
1811 *frame_number = encoder->private_->verify.error_stats.frame_number;
1813 *channel = encoder->private_->verify.error_stats.channel;
1815 *sample = encoder->private_->verify.error_stats.sample;
1817 *expected = encoder->private_->verify.error_stats.expected;
1819 *got = encoder->private_->verify.error_stats.got;
1822 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1824 FLAC__ASSERT(0 != encoder);
1825 FLAC__ASSERT(0 != encoder->private_);
1826 FLAC__ASSERT(0 != encoder->protected_);
1827 return encoder->protected_->verify;
1830 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1832 FLAC__ASSERT(0 != encoder);
1833 FLAC__ASSERT(0 != encoder->private_);
1834 FLAC__ASSERT(0 != encoder->protected_);
1835 return encoder->protected_->streamable_subset;
1838 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1840 FLAC__ASSERT(0 != encoder);
1841 FLAC__ASSERT(0 != encoder->private_);
1842 FLAC__ASSERT(0 != encoder->protected_);
1843 return encoder->protected_->channels;
1846 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1848 FLAC__ASSERT(0 != encoder);
1849 FLAC__ASSERT(0 != encoder->private_);
1850 FLAC__ASSERT(0 != encoder->protected_);
1851 return encoder->protected_->bits_per_sample;
1854 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1856 FLAC__ASSERT(0 != encoder);
1857 FLAC__ASSERT(0 != encoder->private_);
1858 FLAC__ASSERT(0 != encoder->protected_);
1859 return encoder->protected_->sample_rate;
1862 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1864 FLAC__ASSERT(0 != encoder);
1865 FLAC__ASSERT(0 != encoder->private_);
1866 FLAC__ASSERT(0 != encoder->protected_);
1867 return encoder->protected_->blocksize;
1870 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1872 FLAC__ASSERT(0 != encoder);
1873 FLAC__ASSERT(0 != encoder->private_);
1874 FLAC__ASSERT(0 != encoder->protected_);
1875 return encoder->protected_->do_mid_side_stereo;
1878 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1880 FLAC__ASSERT(0 != encoder);
1881 FLAC__ASSERT(0 != encoder->private_);
1882 FLAC__ASSERT(0 != encoder->protected_);
1883 return encoder->protected_->loose_mid_side_stereo;
1886 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1888 FLAC__ASSERT(0 != encoder);
1889 FLAC__ASSERT(0 != encoder->private_);
1890 FLAC__ASSERT(0 != encoder->protected_);
1891 return encoder->protected_->max_lpc_order;
1894 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1896 FLAC__ASSERT(0 != encoder);
1897 FLAC__ASSERT(0 != encoder->private_);
1898 FLAC__ASSERT(0 != encoder->protected_);
1899 return encoder->protected_->qlp_coeff_precision;
1902 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1904 FLAC__ASSERT(0 != encoder);
1905 FLAC__ASSERT(0 != encoder->private_);
1906 FLAC__ASSERT(0 != encoder->protected_);
1907 return encoder->protected_->do_qlp_coeff_prec_search;
1910 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1912 FLAC__ASSERT(0 != encoder);
1913 FLAC__ASSERT(0 != encoder->private_);
1914 FLAC__ASSERT(0 != encoder->protected_);
1915 return encoder->protected_->do_escape_coding;
1918 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1920 FLAC__ASSERT(0 != encoder);
1921 FLAC__ASSERT(0 != encoder->private_);
1922 FLAC__ASSERT(0 != encoder->protected_);
1923 return encoder->protected_->do_exhaustive_model_search;
1926 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1928 FLAC__ASSERT(0 != encoder);
1929 FLAC__ASSERT(0 != encoder->private_);
1930 FLAC__ASSERT(0 != encoder->protected_);
1931 return encoder->protected_->min_residual_partition_order;
1934 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1936 FLAC__ASSERT(0 != encoder);
1937 FLAC__ASSERT(0 != encoder->private_);
1938 FLAC__ASSERT(0 != encoder->protected_);
1939 return encoder->protected_->max_residual_partition_order;
1942 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1944 FLAC__ASSERT(0 != encoder);
1945 FLAC__ASSERT(0 != encoder->private_);
1946 FLAC__ASSERT(0 != encoder->protected_);
1947 return encoder->protected_->rice_parameter_search_dist;
1950 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1952 FLAC__ASSERT(0 != encoder);
1953 FLAC__ASSERT(0 != encoder->private_);
1954 FLAC__ASSERT(0 != encoder->protected_);
1955 return encoder->protected_->total_samples_estimate;
1958 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1960 unsigned i, j, channel;
1961 FLAC__int32 x, mid, side;
1962 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1964 FLAC__ASSERT(0 != encoder);
1965 FLAC__ASSERT(0 != encoder->private_);
1966 FLAC__ASSERT(0 != encoder->protected_);
1967 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1971 * we have several flavors of the same basic loop, optimized for
1972 * different conditions:
1974 if(encoder->protected_->max_lpc_order > 0) {
1975 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
1977 * stereo coding: unroll channel loop
1978 * with LPC: calculate floating point version of signal
1981 if(encoder->protected_->verify)
1982 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
1984 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
1985 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
1986 x = mid = side = buffer[0][j];
1987 encoder->private_->integer_signal[0][i] = x;
1988 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1989 encoder->private_->real_signal[0][i] = (FLAC__real)x;
1992 encoder->private_->integer_signal[1][i] = x;
1993 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1994 encoder->private_->real_signal[1][i] = (FLAC__real)x;
1998 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
1999 encoder->private_->integer_signal_mid_side[1][i] = side;
2000 encoder->private_->integer_signal_mid_side[0][i] = mid;
2001 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2002 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2003 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2005 encoder->private_->current_sample_number++;
2007 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2009 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2011 /* move unprocessed overread samples to beginnings of arrays */
2012 FLAC__ASSERT(i == blocksize+OVERREAD_);
2013 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2015 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2016 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2017 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2018 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2019 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2020 encoder->private_->real_signal[0][0] = encoder->private_->real_signal[0][i];
2021 encoder->private_->real_signal[1][0] = encoder->private_->real_signal[1][i];
2022 encoder->private_->real_signal_mid_side[0][0] = encoder->private_->real_signal_mid_side[0][i];
2023 encoder->private_->real_signal_mid_side[1][0] = encoder->private_->real_signal_mid_side[1][i];
2025 encoder->private_->current_sample_number = 1;
2027 } while(j < samples);
2031 * independent channel coding: buffer each channel in inner loop
2032 * with LPC: calculate floating point version of signal
2035 if(encoder->protected_->verify)
2036 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2038 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2039 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2040 for(channel = 0; channel < channels; channel++) {
2041 x = buffer[channel][j];
2042 encoder->private_->integer_signal[channel][i] = x;
2043 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2044 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2047 encoder->private_->current_sample_number++;
2049 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2051 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2053 /* move unprocessed overread samples to beginnings of arrays */
2054 FLAC__ASSERT(i == blocksize+OVERREAD_);
2055 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2057 for(channel = 0; channel < channels; channel++) {
2058 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2059 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2060 encoder->private_->real_signal[channel][0] = encoder->private_->real_signal[channel][i];
2063 encoder->private_->current_sample_number = 1;
2065 } while(j < samples);
2069 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2071 * stereo coding: unroll channel loop
2072 * without LPC: no need to calculate floating point version of signal
2075 if(encoder->protected_->verify)
2076 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2078 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2079 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2080 encoder->private_->integer_signal[0][i] = mid = side = buffer[0][j];
2082 encoder->private_->integer_signal[1][i] = x;
2085 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
2086 encoder->private_->integer_signal_mid_side[1][i] = side;
2087 encoder->private_->integer_signal_mid_side[0][i] = mid;
2088 encoder->private_->current_sample_number++;
2090 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2092 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2094 /* move unprocessed overread samples to beginnings of arrays */
2095 FLAC__ASSERT(i == blocksize+OVERREAD_);
2096 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2098 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2099 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2100 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2101 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2102 encoder->private_->current_sample_number = 1;
2104 } while(j < samples);
2108 * independent channel coding: buffer each channel in inner loop
2109 * without LPC: no need to calculate floating point version of signal
2112 if(encoder->protected_->verify)
2113 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2115 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2116 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2117 for(channel = 0; channel < channels; channel++)
2118 encoder->private_->integer_signal[channel][i] = buffer[channel][j];
2119 encoder->private_->current_sample_number++;
2121 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2123 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2125 /* move unprocessed overread samples to beginnings of arrays */
2126 FLAC__ASSERT(i == blocksize+OVERREAD_);
2127 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2129 for(channel = 0; channel < channels; channel++)
2130 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2131 encoder->private_->current_sample_number = 1;
2133 } while(j < samples);
2140 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2142 unsigned i, j, k, channel;
2143 FLAC__int32 x, mid, side;
2144 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2146 FLAC__ASSERT(0 != encoder);
2147 FLAC__ASSERT(0 != encoder->private_);
2148 FLAC__ASSERT(0 != encoder->protected_);
2149 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2153 * we have several flavors of the same basic loop, optimized for
2154 * different conditions:
2156 if(encoder->protected_->max_lpc_order > 0) {
2157 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2159 * stereo coding: unroll channel loop
2160 * with LPC: calculate floating point version of signal
2163 if(encoder->protected_->verify)
2164 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2166 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2167 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2168 x = mid = side = buffer[k++];
2169 encoder->private_->integer_signal[0][i] = x;
2170 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2171 encoder->private_->real_signal[0][i] = (FLAC__real)x;
2174 encoder->private_->integer_signal[1][i] = x;
2175 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2176 encoder->private_->real_signal[1][i] = (FLAC__real)x;
2180 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2181 encoder->private_->integer_signal_mid_side[1][i] = side;
2182 encoder->private_->integer_signal_mid_side[0][i] = mid;
2183 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2184 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
2185 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
2187 encoder->private_->current_sample_number++;
2189 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2191 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2193 /* move unprocessed overread samples to beginnings of arrays */
2194 FLAC__ASSERT(i == blocksize+OVERREAD_);
2195 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2197 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2198 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2199 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2200 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2201 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2202 encoder->private_->real_signal[0][0] = encoder->private_->real_signal[0][i];
2203 encoder->private_->real_signal[1][0] = encoder->private_->real_signal[1][i];
2204 encoder->private_->real_signal_mid_side[0][0] = encoder->private_->real_signal_mid_side[0][i];
2205 encoder->private_->real_signal_mid_side[1][0] = encoder->private_->real_signal_mid_side[1][i];
2207 encoder->private_->current_sample_number = 1;
2209 } while(j < samples);
2213 * independent channel coding: buffer each channel in inner loop
2214 * with LPC: calculate floating point version of signal
2217 if(encoder->protected_->verify)
2218 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2220 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2221 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2222 for(channel = 0; channel < channels; channel++) {
2224 encoder->private_->integer_signal[channel][i] = x;
2225 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2226 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
2229 encoder->private_->current_sample_number++;
2231 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2233 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2235 /* move unprocessed overread samples to beginnings of arrays */
2236 FLAC__ASSERT(i == blocksize+OVERREAD_);
2237 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2239 for(channel = 0; channel < channels; channel++) {
2240 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2241 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2242 encoder->private_->real_signal[channel][0] = encoder->private_->real_signal[channel][i];
2245 encoder->private_->current_sample_number = 1;
2247 } while(j < samples);
2251 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2253 * stereo coding: unroll channel loop
2254 * without LPC: no need to calculate floating point version of signal
2257 if(encoder->protected_->verify)
2258 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2260 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2261 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2262 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2264 encoder->private_->integer_signal[1][i] = x;
2267 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2268 encoder->private_->integer_signal_mid_side[1][i] = side;
2269 encoder->private_->integer_signal_mid_side[0][i] = mid;
2270 encoder->private_->current_sample_number++;
2272 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2274 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2276 /* move unprocessed overread samples to beginnings of arrays */
2277 FLAC__ASSERT(i == blocksize+OVERREAD_);
2278 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2280 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][i];
2281 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][i];
2282 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][i];
2283 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][i];
2284 encoder->private_->current_sample_number = 1;
2286 } while(j < samples);
2290 * independent channel coding: buffer each channel in inner loop
2291 * without LPC: no need to calculate floating point version of signal
2294 if(encoder->protected_->verify)
2295 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+1-encoder->private_->current_sample_number, samples-j));
2297 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2298 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2299 for(channel = 0; channel < channels; channel++)
2300 encoder->private_->integer_signal[channel][i] = buffer[k++];
2301 encoder->private_->current_sample_number++;
2303 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2305 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2307 /* move unprocessed overread samples to beginnings of arrays */
2308 FLAC__ASSERT(i == blocksize+OVERREAD_);
2309 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2311 for(channel = 0; channel < channels; channel++)
2312 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][i];
2313 encoder->private_->current_sample_number = 1;
2315 } while(j < samples);
2322 /***********************************************************************
2324 * Private class methods
2326 ***********************************************************************/
2328 void set_defaults_(FLAC__StreamEncoder *encoder)
2330 FLAC__ASSERT(0 != encoder);
2332 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2333 encoder->protected_->verify = true;
2335 encoder->protected_->verify = false;
2337 encoder->protected_->streamable_subset = true;
2338 encoder->protected_->do_mid_side_stereo = false;
2339 encoder->protected_->loose_mid_side_stereo = false;
2340 encoder->protected_->channels = 2;
2341 encoder->protected_->bits_per_sample = 16;
2342 encoder->protected_->sample_rate = 44100;
2343 encoder->protected_->blocksize = 0;
2344 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2345 encoder->protected_->num_apodizations = 1;
2346 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2347 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2349 encoder->protected_->max_lpc_order = 0;
2350 encoder->protected_->qlp_coeff_precision = 0;
2351 encoder->protected_->do_qlp_coeff_prec_search = false;
2352 encoder->protected_->do_exhaustive_model_search = false;
2353 encoder->protected_->do_escape_coding = false;
2354 encoder->protected_->min_residual_partition_order = 0;
2355 encoder->protected_->max_residual_partition_order = 0;
2356 encoder->protected_->rice_parameter_search_dist = 0;
2357 encoder->protected_->total_samples_estimate = 0;
2358 encoder->protected_->metadata = 0;
2359 encoder->protected_->num_metadata_blocks = 0;
2361 encoder->private_->seek_table = 0;
2362 encoder->private_->disable_constant_subframes = false;
2363 encoder->private_->disable_fixed_subframes = false;
2364 encoder->private_->disable_verbatim_subframes = false;
2366 encoder->private_->is_ogg = false;
2368 encoder->private_->read_callback = 0;
2369 encoder->private_->write_callback = 0;
2370 encoder->private_->seek_callback = 0;
2371 encoder->private_->tell_callback = 0;
2372 encoder->private_->metadata_callback = 0;
2373 encoder->private_->progress_callback = 0;
2374 encoder->private_->client_data = 0;
2377 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2381 void free_(FLAC__StreamEncoder *encoder)
2383 unsigned i, channel;
2385 FLAC__ASSERT(0 != encoder);
2386 if(encoder->protected_->metadata) {
2387 free(encoder->protected_->metadata);
2388 encoder->protected_->metadata = 0;
2389 encoder->protected_->num_metadata_blocks = 0;
2391 for(i = 0; i < encoder->protected_->channels; i++) {
2392 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2393 free(encoder->private_->integer_signal_unaligned[i]);
2394 encoder->private_->integer_signal_unaligned[i] = 0;
2396 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2397 if(0 != encoder->private_->real_signal_unaligned[i]) {
2398 free(encoder->private_->real_signal_unaligned[i]);
2399 encoder->private_->real_signal_unaligned[i] = 0;
2403 for(i = 0; i < 2; i++) {
2404 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2405 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2406 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2408 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2409 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2410 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2411 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2415 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2416 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2417 if(0 != encoder->private_->window_unaligned[i]) {
2418 free(encoder->private_->window_unaligned[i]);
2419 encoder->private_->window_unaligned[i] = 0;
2422 if(0 != encoder->private_->windowed_signal_unaligned) {
2423 free(encoder->private_->windowed_signal_unaligned);
2424 encoder->private_->windowed_signal_unaligned = 0;
2427 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2428 for(i = 0; i < 2; i++) {
2429 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2430 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2431 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2435 for(channel = 0; channel < 2; channel++) {
2436 for(i = 0; i < 2; i++) {
2437 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2438 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2439 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2443 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2444 free(encoder->private_->abs_residual_partition_sums_unaligned);
2445 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2447 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2448 free(encoder->private_->raw_bits_per_partition_unaligned);
2449 encoder->private_->raw_bits_per_partition_unaligned = 0;
2451 if(encoder->protected_->verify) {
2452 for(i = 0; i < encoder->protected_->channels; i++) {
2453 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2454 free(encoder->private_->verify.input_fifo.data[i]);
2455 encoder->private_->verify.input_fifo.data[i] = 0;
2459 FLAC__bitwriter_free(encoder->private_->frame);
2462 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2465 unsigned i, channel;
2467 FLAC__ASSERT(new_blocksize > 0);
2468 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2469 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2471 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2472 if(new_blocksize <= encoder->private_->input_capacity)
2477 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2478 * requires that the input arrays (in our case the integer signals)
2479 * have a buffer of up to 3 zeroes in front (at negative indices) for
2480 * alignment purposes; we use 4 in front to keep the data well-aligned.
2483 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2484 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2485 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2486 encoder->private_->integer_signal[i] += 4;
2487 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2488 if(encoder->protected_->max_lpc_order > 0)
2489 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2492 for(i = 0; ok && i < 2; i++) {
2493 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]);
2494 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2495 encoder->private_->integer_signal_mid_side[i] += 4;
2496 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2497 if(encoder->protected_->max_lpc_order > 0)
2498 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]);
2501 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2502 if(ok && encoder->protected_->max_lpc_order > 0) {
2503 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2504 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2505 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2508 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2509 for(i = 0; ok && i < 2; i++) {
2510 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2513 for(channel = 0; ok && channel < 2; channel++) {
2514 for(i = 0; ok && i < 2; i++) {
2515 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]);
2518 /* @@@@@@@@@ blocksize*2 is too pessimistic, but to fix, we need smarter logic because a smaller new_blocksize can actually increase the # of partitions */
2519 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2520 if(encoder->protected_->do_escape_coding)
2521 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2523 /* now adjust the windows if the blocksize has changed */
2524 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2525 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2526 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2527 switch(encoder->protected_->apodizations[i].type) {
2528 case FLAC__APODIZATION_BARTLETT:
2529 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2531 case FLAC__APODIZATION_BARTLETT_HANN:
2532 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2534 case FLAC__APODIZATION_BLACKMAN:
2535 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2537 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2538 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2540 case FLAC__APODIZATION_CONNES:
2541 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2543 case FLAC__APODIZATION_FLATTOP:
2544 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2546 case FLAC__APODIZATION_GAUSS:
2547 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2549 case FLAC__APODIZATION_HAMMING:
2550 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2552 case FLAC__APODIZATION_HANN:
2553 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2555 case FLAC__APODIZATION_KAISER_BESSEL:
2556 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2558 case FLAC__APODIZATION_NUTTALL:
2559 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2561 case FLAC__APODIZATION_RECTANGLE:
2562 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2564 case FLAC__APODIZATION_TRIANGLE:
2565 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2567 case FLAC__APODIZATION_TUKEY:
2568 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2570 case FLAC__APODIZATION_WELCH:
2571 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2575 /* double protection */
2576 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2584 encoder->private_->input_capacity = new_blocksize;
2586 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2591 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2593 const FLAC__byte *buffer;
2596 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2598 if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
2599 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2603 if(encoder->protected_->verify) {
2604 encoder->private_->verify.output.data = buffer;
2605 encoder->private_->verify.output.bytes = bytes;
2606 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2607 encoder->private_->verify.needs_magic_hack = true;
2610 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2611 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2612 FLAC__bitwriter_clear(encoder->private_->frame);
2613 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2614 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2620 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2621 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2622 FLAC__bitwriter_clear(encoder->private_->frame);
2623 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2627 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2628 FLAC__bitwriter_clear(encoder->private_->frame);
2631 encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2632 encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2638 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2640 FLAC__StreamEncoderWriteStatus status;
2641 FLAC__uint64 output_position = 0;
2643 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2644 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2645 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2646 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2650 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2653 FLAC__MetadataType type = (buffer[0] & 0x7f);
2654 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2655 encoder->protected_->streaminfo_offset = output_position;
2656 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2657 encoder->protected_->seektable_offset = output_position;
2661 * Mark the current seek point if hit (if audio_offset == 0 that
2662 * means we're still writing metadata and haven't hit the first
2665 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2666 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2667 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2668 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2669 FLAC__uint64 test_sample;
2671 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2672 test_sample = encoder->private_->seek_table->points[i].sample_number;
2673 if(test_sample > frame_last_sample) {
2676 else if(test_sample >= frame_first_sample) {
2677 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2678 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2679 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2680 encoder->private_->first_seekpoint_to_check++;
2681 /* DO NOT: "break;" and here's why:
2682 * The seektable template may contain more than one target
2683 * sample for any given frame; we will keep looping, generating
2684 * duplicate seekpoints for them, and we'll clean it up later,
2685 * just before writing the seektable back to the metadata.
2689 encoder->private_->first_seekpoint_to_check++;
2695 if(encoder->private_->is_ogg) {
2696 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2697 &encoder->protected_->ogg_encoder_aspect,
2701 encoder->private_->current_frame_number,
2703 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2705 encoder->private_->client_data
2710 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2712 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2713 encoder->private_->bytes_written += bytes;
2714 encoder->private_->samples_written += samples;
2715 /* we keep a high watermark on the number of frames written because
2716 * when the encoder goes back to write metadata, 'current_frame'
2717 * will drop back to 0.
2719 encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2722 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2727 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2728 void update_metadata_(const FLAC__StreamEncoder *encoder)
2730 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2731 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2732 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2733 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2734 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2735 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2736 FLAC__StreamEncoderSeekStatus seek_status;
2738 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2740 /* All this is based on intimate knowledge of the stream header
2741 * layout, but a change to the header format that would break this
2742 * would also break all streams encoded in the previous format.
2746 * Write MD5 signature
2749 const unsigned md5_offset =
2750 FLAC__STREAM_METADATA_HEADER_LENGTH +
2752 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2753 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2754 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2755 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2756 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2757 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2758 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2759 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2762 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2763 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2764 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2767 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2768 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2774 * Write total samples
2777 const unsigned total_samples_byte_offset =
2778 FLAC__STREAM_METADATA_HEADER_LENGTH +
2780 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2781 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2782 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2783 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2784 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2785 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2786 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2790 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2791 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2792 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2793 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2794 b[4] = (FLAC__byte)(samples & 0xFF);
2795 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) {
2796 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2797 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2800 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2801 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2807 * Write min/max framesize
2810 const unsigned min_framesize_offset =
2811 FLAC__STREAM_METADATA_HEADER_LENGTH +
2813 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2814 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2817 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2818 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2819 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2820 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2821 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2822 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2823 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) {
2824 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2825 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2828 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2829 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2837 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2840 FLAC__format_seektable_sort(encoder->private_->seek_table);
2842 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2844 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) {
2845 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2846 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2850 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2853 xx = encoder->private_->seek_table->points[i].sample_number;
2854 b[7] = (FLAC__byte)xx; xx >>= 8;
2855 b[6] = (FLAC__byte)xx; xx >>= 8;
2856 b[5] = (FLAC__byte)xx; xx >>= 8;
2857 b[4] = (FLAC__byte)xx; xx >>= 8;
2858 b[3] = (FLAC__byte)xx; xx >>= 8;
2859 b[2] = (FLAC__byte)xx; xx >>= 8;
2860 b[1] = (FLAC__byte)xx; xx >>= 8;
2861 b[0] = (FLAC__byte)xx; xx >>= 8;
2862 xx = encoder->private_->seek_table->points[i].stream_offset;
2863 b[15] = (FLAC__byte)xx; xx >>= 8;
2864 b[14] = (FLAC__byte)xx; xx >>= 8;
2865 b[13] = (FLAC__byte)xx; xx >>= 8;
2866 b[12] = (FLAC__byte)xx; xx >>= 8;
2867 b[11] = (FLAC__byte)xx; xx >>= 8;
2868 b[10] = (FLAC__byte)xx; xx >>= 8;
2869 b[9] = (FLAC__byte)xx; xx >>= 8;
2870 b[8] = (FLAC__byte)xx; xx >>= 8;
2871 x = encoder->private_->seek_table->points[i].frame_samples;
2872 b[17] = (FLAC__byte)x; x >>= 8;
2873 b[16] = (FLAC__byte)x; x >>= 8;
2874 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2875 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2883 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2884 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2886 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2887 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2888 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2889 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2890 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2891 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2892 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2893 FLAC__STREAM_SYNC_LENGTH
2895 FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2896 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2897 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2898 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2899 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2902 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2903 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2905 /* Pre-check that client supports seeking, since we don't want the
2906 * ogg_helper code to ever have to deal with this condition.
2908 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2911 /* All this is based on intimate knowledge of the stream header
2912 * layout, but a change to the header format that would break this
2913 * would also break all streams encoded in the previous format.
2917 ** Write STREAMINFO stats
2919 simple_ogg_page__init(&page);
2920 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2921 simple_ogg_page__clear(&page);
2922 return; /* state already set */
2926 * Write MD5 signature
2929 const unsigned md5_offset =
2930 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2931 FLAC__STREAM_METADATA_HEADER_LENGTH +
2933 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2934 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2935 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2936 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2937 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2938 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2939 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2940 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2943 if(md5_offset + 16 > (unsigned)page.body_len) {
2944 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2945 simple_ogg_page__clear(&page);
2948 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2952 * Write total samples
2955 const unsigned total_samples_byte_offset =
2956 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2957 FLAC__STREAM_METADATA_HEADER_LENGTH +
2959 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2960 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2961 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2962 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2963 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2964 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2965 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2969 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2970 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2971 simple_ogg_page__clear(&page);
2974 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2975 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2976 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2977 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2978 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2979 b[4] = (FLAC__byte)(samples & 0xFF);
2980 memcpy(page.body + total_samples_byte_offset, b, 5);
2984 * Write min/max framesize
2987 const unsigned min_framesize_offset =
2988 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2989 FLAC__STREAM_METADATA_HEADER_LENGTH +
2991 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2992 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2995 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
2996 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2997 simple_ogg_page__clear(&page);
3000 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
3001 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
3002 b[2] = (FLAC__byte)(min_framesize & 0xFF);
3003 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
3004 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
3005 b[5] = (FLAC__byte)(max_framesize & 0xFF);
3006 memcpy(page.body + min_framesize_offset, b, 6);
3008 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
3009 simple_ogg_page__clear(&page);
3010 return; /* state already set */
3012 simple_ogg_page__clear(&page);
3017 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
3021 FLAC__format_seektable_sort(encoder->private_->seek_table);
3023 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
3025 simple_ogg_page__init(&page);
3026 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
3027 simple_ogg_page__clear(&page);
3028 return; /* state already set */
3031 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
3032 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
3033 simple_ogg_page__clear(&page);
3037 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
3040 xx = encoder->private_->seek_table->points[i].sample_number;
3041 b[7] = (FLAC__byte)xx; xx >>= 8;
3042 b[6] = (FLAC__byte)xx; xx >>= 8;
3043 b[5] = (FLAC__byte)xx; xx >>= 8;
3044 b[4] = (FLAC__byte)xx; xx >>= 8;
3045 b[3] = (FLAC__byte)xx; xx >>= 8;
3046 b[2] = (FLAC__byte)xx; xx >>= 8;
3047 b[1] = (FLAC__byte)xx; xx >>= 8;
3048 b[0] = (FLAC__byte)xx; xx >>= 8;
3049 xx = encoder->private_->seek_table->points[i].stream_offset;
3050 b[15] = (FLAC__byte)xx; xx >>= 8;
3051 b[14] = (FLAC__byte)xx; xx >>= 8;
3052 b[13] = (FLAC__byte)xx; xx >>= 8;
3053 b[12] = (FLAC__byte)xx; xx >>= 8;
3054 b[11] = (FLAC__byte)xx; xx >>= 8;
3055 b[10] = (FLAC__byte)xx; xx >>= 8;
3056 b[9] = (FLAC__byte)xx; xx >>= 8;
3057 b[8] = (FLAC__byte)xx; xx >>= 8;
3058 x = encoder->private_->seek_table->points[i].frame_samples;
3059 b[17] = (FLAC__byte)x; x >>= 8;
3060 b[16] = (FLAC__byte)x; x >>= 8;
3064 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
3065 simple_ogg_page__clear(&page);
3066 return; /* state already set */
3068 simple_ogg_page__clear(&page);
3073 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
3076 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
3079 * Accumulate raw signal to the MD5 signature
3081 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)) {
3082 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3087 * Process the frame header and subframes into the frame bitbuffer
3089 if(!process_subframes_(encoder, is_fractional_block)) {
3090 /* the above function sets the state for us in case of an error */
3095 * Zero-pad the frame to a byte_boundary
3097 if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
3098 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3103 * CRC-16 the whole thing
3105 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
3107 !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
3108 !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
3110 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
3117 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
3118 /* the above function sets the state for us in case of an error */
3123 * Get ready for the next frame
3125 encoder->private_->current_sample_number = 0;
3126 encoder->private_->current_frame_number++;
3127 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
3132 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
3134 FLAC__FrameHeader frame_header;
3135 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
3136 FLAC__bool do_independent, do_mid_side;
3139 * Calculate the min,max Rice partition orders
3141 if(is_fractional_block) {
3142 max_partition_order = 0;
3145 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
3146 max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
3148 min_partition_order = min(min_partition_order, max_partition_order);
3153 frame_header.blocksize = encoder->protected_->blocksize;
3154 frame_header.sample_rate = encoder->protected_->sample_rate;
3155 frame_header.channels = encoder->protected_->channels;
3156 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
3157 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
3158 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
3159 frame_header.number.frame_number = encoder->private_->current_frame_number;
3162 * Figure out what channel assignments to try
3164 if(encoder->protected_->do_mid_side_stereo) {
3165 if(encoder->protected_->loose_mid_side_stereo) {
3166 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
3167 do_independent = true;
3171 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
3172 do_mid_side = !do_independent;
3176 do_independent = true;
3181 do_independent = true;
3182 do_mid_side = false;
3185 FLAC__ASSERT(do_independent || do_mid_side);
3188 * Check for wasted bits; set effective bps for each subframe
3190 if(do_independent) {
3191 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3192 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
3193 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
3194 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
3198 FLAC__ASSERT(encoder->protected_->channels == 2);
3199 for(channel = 0; channel < 2; channel++) {
3200 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
3201 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
3202 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
3207 * First do a normal encoding pass of each independent channel
3209 if(do_independent) {
3210 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3214 min_partition_order,
3215 max_partition_order,
3217 encoder->private_->subframe_bps[channel],
3218 encoder->private_->integer_signal[channel],
3219 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3220 encoder->private_->real_signal[channel],
3222 encoder->private_->subframe_workspace_ptr[channel],
3223 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
3224 encoder->private_->residual_workspace[channel],
3225 encoder->private_->best_subframe+channel,
3226 encoder->private_->best_subframe_bits+channel
3234 * Now do mid and side channels if requested
3237 FLAC__ASSERT(encoder->protected_->channels == 2);
3239 for(channel = 0; channel < 2; channel++) {
3243 min_partition_order,
3244 max_partition_order,
3246 encoder->private_->subframe_bps_mid_side[channel],
3247 encoder->private_->integer_signal_mid_side[channel],
3248 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3249 encoder->private_->real_signal_mid_side[channel],
3251 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3252 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3253 encoder->private_->residual_workspace_mid_side[channel],
3254 encoder->private_->best_subframe_mid_side+channel,
3255 encoder->private_->best_subframe_bits_mid_side+channel
3263 * Compose the frame bitbuffer
3266 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3267 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3268 FLAC__ChannelAssignment channel_assignment;
3270 FLAC__ASSERT(encoder->protected_->channels == 2);
3272 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3273 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3276 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3280 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
3281 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
3282 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
3283 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
3284 FLAC__ASSERT(do_independent && do_mid_side);
3286 /* We have to figure out which channel assignent results in the smallest frame */
3287 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3288 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3289 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3290 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3292 channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
3293 min_bits = bits[channel_assignment];
3294 for(ca = 1; ca <= 3; ca++) {
3295 if(bits[ca] < min_bits) {
3296 min_bits = bits[ca];
3297 channel_assignment = (FLAC__ChannelAssignment)ca;
3302 frame_header.channel_assignment = channel_assignment;
3304 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3305 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3309 switch(channel_assignment) {
3310 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3311 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3312 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3314 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3315 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3316 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3318 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3319 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3320 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3322 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3323 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3324 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3330 switch(channel_assignment) {
3331 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3332 left_bps = encoder->private_->subframe_bps [0];
3333 right_bps = encoder->private_->subframe_bps [1];
3335 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3336 left_bps = encoder->private_->subframe_bps [0];
3337 right_bps = encoder->private_->subframe_bps_mid_side[1];
3339 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3340 left_bps = encoder->private_->subframe_bps_mid_side[1];
3341 right_bps = encoder->private_->subframe_bps [1];
3343 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3344 left_bps = encoder->private_->subframe_bps_mid_side[0];
3345 right_bps = encoder->private_->subframe_bps_mid_side[1];
3351 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3352 if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
3354 if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
3358 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3359 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3363 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3364 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)) {
3365 /* the above function sets the state for us in case of an error */
3371 if(encoder->protected_->loose_mid_side_stereo) {
3372 encoder->private_->loose_mid_side_stereo_frame_count++;
3373 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3374 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3377 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3382 FLAC__bool process_subframe_(
3383 FLAC__StreamEncoder *encoder,
3384 unsigned min_partition_order,
3385 unsigned max_partition_order,
3386 const FLAC__FrameHeader *frame_header,
3387 unsigned subframe_bps,
3388 const FLAC__int32 integer_signal[],
3389 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3390 const FLAC__real real_signal[],
3392 FLAC__Subframe *subframe[2],
3393 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3394 FLAC__int32 *residual[2],
3395 unsigned *best_subframe,
3399 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3400 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3402 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3404 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3405 FLAC__double lpc_residual_bits_per_sample;
3406 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 */
3407 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3408 unsigned min_lpc_order, max_lpc_order, lpc_order;
3409 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3411 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3412 unsigned rice_parameter;
3413 unsigned _candidate_bits, _best_bits;
3414 unsigned _best_subframe;
3416 FLAC__ASSERT(frame_header->blocksize > 0);
3418 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3420 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3421 _best_bits = UINT_MAX;
3423 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3425 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3426 unsigned signal_is_constant = false;
3427 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);
3428 /* check for constant subframe */
3430 !encoder->private_->disable_constant_subframes &&
3431 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3432 fixed_residual_bits_per_sample[1] == 0.0
3434 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3437 /* the above means it's possible all samples are the same value; now double-check it: */
3439 signal_is_constant = true;
3440 for(i = 1; i < frame_header->blocksize; i++) {
3441 if(integer_signal[0] != integer_signal[i]) {
3442 signal_is_constant = false;
3447 if(signal_is_constant) {
3448 _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
3449 if(_candidate_bits < _best_bits) {
3450 _best_subframe = !_best_subframe;
3451 _best_bits = _candidate_bits;
3455 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3457 if(encoder->protected_->do_exhaustive_model_search) {
3458 min_fixed_order = 0;
3459 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3462 min_fixed_order = max_fixed_order = guess_fixed_order;
3464 if(max_fixed_order >= frame_header->blocksize)
3465 max_fixed_order = frame_header->blocksize - 1;
3466 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3467 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3468 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3469 continue; /* don't even try */
3470 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 */
3472 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3473 continue; /* don't even try */
3474 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 */
3476 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3477 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3478 #ifdef DEBUG_VERBOSE
3479 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3481 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3484 evaluate_fixed_subframe_(
3487 residual[!_best_subframe],
3488 encoder->private_->abs_residual_partition_sums,
3489 encoder->private_->raw_bits_per_partition,
3490 frame_header->blocksize,
3494 min_partition_order,
3495 max_partition_order,
3496 encoder->protected_->do_escape_coding,
3497 encoder->protected_->rice_parameter_search_dist,
3498 subframe[!_best_subframe],
3499 partitioned_rice_contents[!_best_subframe]
3501 if(_candidate_bits < _best_bits) {
3502 _best_subframe = !_best_subframe;
3503 _best_bits = _candidate_bits;
3508 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3510 if(encoder->protected_->max_lpc_order > 0) {
3511 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3512 max_lpc_order = frame_header->blocksize-1;
3514 max_lpc_order = encoder->protected_->max_lpc_order;
3515 if(max_lpc_order > 0) {
3517 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3518 FLAC__lpc_window_data(real_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3519 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3520 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3521 if(autoc[0] != 0.0) {
3522 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3523 if(encoder->protected_->do_exhaustive_model_search) {
3527 const unsigned guess_lpc_order =
3528 FLAC__lpc_compute_best_order(
3531 frame_header->blocksize,
3533 encoder->protected_->do_qlp_coeff_prec_search?
3534 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3535 encoder->protected_->qlp_coeff_precision
3538 min_lpc_order = max_lpc_order = guess_lpc_order;
3540 if(max_lpc_order >= frame_header->blocksize)
3541 max_lpc_order = frame_header->blocksize - 1;
3542 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3543 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3544 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3545 continue; /* don't even try */
3546 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3547 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3548 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3549 #ifdef DEBUG_VERBOSE
3550 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
3552 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
3554 if(encoder->protected_->do_qlp_coeff_prec_search) {
3555 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3556 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3557 if(subframe_bps <= 17) {
3558 max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3559 max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3562 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3565 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3567 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3569 evaluate_lpc_subframe_(
3572 residual[!_best_subframe],
3573 encoder->private_->abs_residual_partition_sums,
3574 encoder->private_->raw_bits_per_partition,
3575 encoder->private_->lp_coeff[lpc_order-1],
3576 frame_header->blocksize,
3579 qlp_coeff_precision,
3581 min_partition_order,
3582 max_partition_order,
3583 encoder->protected_->do_escape_coding,
3584 encoder->protected_->rice_parameter_search_dist,
3585 subframe[!_best_subframe],
3586 partitioned_rice_contents[!_best_subframe]
3588 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3589 if(_candidate_bits < _best_bits) {
3590 _best_subframe = !_best_subframe;
3591 _best_bits = _candidate_bits;
3600 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3604 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3605 if(_best_bits == UINT_MAX) {
3606 FLAC__ASSERT(_best_subframe == 0);
3607 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3610 *best_subframe = _best_subframe;
3611 *best_bits = _best_bits;
3616 FLAC__bool add_subframe_(
3617 FLAC__StreamEncoder *encoder,
3619 unsigned subframe_bps,
3620 const FLAC__Subframe *subframe,
3621 FLAC__BitWriter *frame
3624 switch(subframe->type) {
3625 case FLAC__SUBFRAME_TYPE_CONSTANT:
3626 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3627 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3631 case FLAC__SUBFRAME_TYPE_FIXED:
3632 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3633 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3637 case FLAC__SUBFRAME_TYPE_LPC:
3638 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3639 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3643 case FLAC__SUBFRAME_TYPE_VERBATIM:
3644 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3645 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3656 #define SPOTCHECK_ESTIMATE 0 //@@@@@@@@@
3657 #if SPOTCHECK_ESTIMATE
3658 static void spotcheck_subframe_estimate_(
3659 FLAC__StreamEncoder *encoder,
3661 unsigned subframe_bps,
3662 const FLAC__Subframe *subframe,
3667 FLAC__BitWriter *frame = FLAC__bitwriter_new();
3669 fprintf(stderr, "EST: can't allocate frame\n");
3672 if(!FLAC__bitwriter_init(frame)) {
3673 fprintf(stderr, "EST: can't init frame\n");
3676 ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
3679 const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
3680 if(estimate != actual)
3681 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);
3683 FLAC__bitwriter_delete(frame);
3687 unsigned evaluate_constant_subframe_(
3688 FLAC__StreamEncoder *encoder,
3689 const FLAC__int32 signal,
3691 unsigned subframe_bps,
3692 FLAC__Subframe *subframe
3696 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3697 subframe->data.constant.value = signal;
3699 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
3701 #if SPOTCHECK_ESTIMATE
3702 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3704 (void)encoder, (void)blocksize;
3710 unsigned evaluate_fixed_subframe_(
3711 FLAC__StreamEncoder *encoder,
3712 const FLAC__int32 signal[],
3713 FLAC__int32 residual[],
3714 FLAC__uint64 abs_residual_partition_sums[],
3715 unsigned raw_bits_per_partition[],
3717 unsigned subframe_bps,
3719 unsigned rice_parameter,
3720 unsigned min_partition_order,
3721 unsigned max_partition_order,
3722 FLAC__bool do_escape_coding,
3723 unsigned rice_parameter_search_dist,
3724 FLAC__Subframe *subframe,
3725 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3728 unsigned i, residual_bits, estimate;
3729 const unsigned residual_samples = blocksize - order;
3731 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3733 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3735 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3736 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3737 subframe->data.fixed.residual = residual;
3740 find_best_partition_order_(
3743 abs_residual_partition_sums,
3744 raw_bits_per_partition,
3748 min_partition_order,
3749 max_partition_order,
3751 rice_parameter_search_dist,
3752 &subframe->data.fixed.entropy_coding_method.data.partitioned_rice
3755 subframe->data.fixed.order = order;
3756 for(i = 0; i < order; i++)
3757 subframe->data.fixed.warmup[i] = signal[i];
3759 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
3761 #if SPOTCHECK_ESTIMATE
3762 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3768 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3769 unsigned evaluate_lpc_subframe_(
3770 FLAC__StreamEncoder *encoder,
3771 const FLAC__int32 signal[],
3772 FLAC__int32 residual[],
3773 FLAC__uint64 abs_residual_partition_sums[],
3774 unsigned raw_bits_per_partition[],
3775 const FLAC__real lp_coeff[],
3777 unsigned subframe_bps,
3779 unsigned qlp_coeff_precision,
3780 unsigned rice_parameter,
3781 unsigned min_partition_order,
3782 unsigned max_partition_order,
3783 FLAC__bool do_escape_coding,
3784 unsigned rice_parameter_search_dist,
3785 FLAC__Subframe *subframe,
3786 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3789 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3790 unsigned i, residual_bits, estimate;
3791 int quantization, ret;
3792 const unsigned residual_samples = blocksize - order;
3794 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3795 if(subframe_bps <= 16) {
3796 FLAC__ASSERT(order > 0);
3797 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3798 qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3801 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3803 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3805 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3806 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3807 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3809 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3811 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3813 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3815 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3816 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3817 subframe->data.lpc.residual = residual;
3820 find_best_partition_order_(
3823 abs_residual_partition_sums,
3824 raw_bits_per_partition,
3828 min_partition_order,
3829 max_partition_order,
3831 rice_parameter_search_dist,
3832 &subframe->data.lpc.entropy_coding_method.data.partitioned_rice
3835 subframe->data.lpc.order = order;
3836 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3837 subframe->data.lpc.quantization_level = quantization;
3838 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3839 for(i = 0; i < order; i++)
3840 subframe->data.lpc.warmup[i] = signal[i];
3842 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;
3844 #if SPOTCHECK_ESTIMATE
3845 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3852 unsigned evaluate_verbatim_subframe_(
3853 FLAC__StreamEncoder *encoder,
3854 const FLAC__int32 signal[],
3856 unsigned subframe_bps,
3857 FLAC__Subframe *subframe
3862 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3864 subframe->data.verbatim.data = signal;
3866 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
3868 #if SPOTCHECK_ESTIMATE
3869 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3877 unsigned find_best_partition_order_(
3878 FLAC__StreamEncoderPrivate *private_,
3879 const FLAC__int32 residual[],
3880 FLAC__uint64 abs_residual_partition_sums[],
3881 unsigned raw_bits_per_partition[],
3882 unsigned residual_samples,
3883 unsigned predictor_order,
3884 unsigned rice_parameter,
3885 unsigned min_partition_order,
3886 unsigned max_partition_order,
3887 FLAC__bool do_escape_coding,
3888 unsigned rice_parameter_search_dist,
3889 FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice
3892 unsigned residual_bits, best_residual_bits = 0;
3893 unsigned best_parameters_index = 0;
3894 const unsigned blocksize = residual_samples + predictor_order;
3896 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3897 min_partition_order = min(min_partition_order, max_partition_order);
3899 precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order);
3901 if(do_escape_coding)
3902 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3905 int partition_order;
3908 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3910 set_partitioned_rice_(
3911 #ifdef EXACT_RICE_BITS_CALCULATION
3914 abs_residual_partition_sums+sum,
3915 raw_bits_per_partition+sum,
3919 rice_parameter_search_dist,
3920 (unsigned)partition_order,
3922 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3927 FLAC__ASSERT(best_residual_bits != 0);
3930 sum += 1u << partition_order;
3931 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3932 best_residual_bits = residual_bits;
3933 best_parameters_index = !best_parameters_index;
3934 best_partitioned_rice->order = partition_order;
3940 * We are allowed to de-const the pointer based on our special knowledge;
3941 * it is const to the outside world.
3944 FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents;
3945 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order));
3946 memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3947 memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order)));
3950 return best_residual_bits;
3953 void precompute_partition_info_sums_(
3954 const FLAC__int32 residual[],
3955 FLAC__uint64 abs_residual_partition_sums[],
3956 unsigned residual_samples,
3957 unsigned predictor_order,
3958 unsigned min_partition_order,
3959 unsigned max_partition_order
3962 int partition_order;
3963 unsigned from_partition, to_partition = 0;
3964 const unsigned blocksize = residual_samples + predictor_order;
3966 /* first do max_partition_order */
3967 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3968 FLAC__uint64 abs_residual_partition_sum; /* OPT: can reasonably be FLAC__uint32 for bps <= 17 and maybe higher */
3969 unsigned partition, partition_sample, partition_samples, residual_sample;
3970 const unsigned partitions = 1u << partition_order;
3971 const unsigned default_partition_samples = blocksize >> partition_order;
3973 FLAC__ASSERT(default_partition_samples > predictor_order);
3975 for(partition = residual_sample = 0; partition < partitions; partition++) {
3976 partition_samples = default_partition_samples;
3978 partition_samples -= predictor_order;
3979 abs_residual_partition_sum = 0;
3980 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++, residual_sample++) {
3981 #if defined _MSC_VER && _MSC_VER <= 1200
3982 /* OPT: abs() may be faster for some compilers */
3983 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3985 const FLAC__int32 r = residual[residual_sample];
3987 abs_residual_partition_sum -= r;
3989 abs_residual_partition_sum += r;
3992 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3994 to_partition = partitions;
3998 /* now merge partitions for lower orders */
3999 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
4002 const unsigned partitions = 1u << partition_order;
4003 for(i = 0; i < partitions; i++) {
4004 s = abs_residual_partition_sums[from_partition];
4006 abs_residual_partition_sums[to_partition] = s + abs_residual_partition_sums[from_partition];
4013 void precompute_partition_info_escapes_(
4014 const FLAC__int32 residual[],
4015 unsigned raw_bits_per_partition[],
4016 unsigned residual_samples,
4017 unsigned predictor_order,
4018 unsigned min_partition_order,
4019 unsigned max_partition_order
4022 int partition_order;
4023 unsigned from_partition, to_partition = 0;
4024 const unsigned blocksize = residual_samples + predictor_order;
4026 /* first do max_partition_order */
4027 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
4028 FLAC__int32 r, residual_partition_min, residual_partition_max;
4029 unsigned silog2_min, silog2_max;
4030 unsigned partition, partition_sample, partition_samples, residual_sample;
4031 const unsigned partitions = 1u << partition_order;
4032 const unsigned default_partition_samples = blocksize >> partition_order;
4034 FLAC__ASSERT(default_partition_samples > predictor_order);
4036 for(partition = residual_sample = 0; partition < partitions; partition++) {
4037 partition_samples = default_partition_samples;
4039 partition_samples -= predictor_order;
4040 residual_partition_min = residual_partition_max = 0;
4041 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
4042 r = residual[residual_sample];
4043 if(r < residual_partition_min)
4044 residual_partition_min = r;
4045 else if(r > residual_partition_max)
4046 residual_partition_max = r;
4049 silog2_min = FLAC__bitmath_silog2(residual_partition_min);
4050 silog2_max = FLAC__bitmath_silog2(residual_partition_max);
4051 raw_bits_per_partition[partition] = max(silog2_min, silog2_max);
4053 to_partition = partitions;
4054 break; /*@@@ yuck, should remove the 'for' loop instead */
4057 /* now merge partitions for lower orders */
4058 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
4061 const unsigned partitions = 1u << partition_order;
4062 for(i = 0; i < partitions; i++) {
4063 m = raw_bits_per_partition[from_partition];
4065 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
4072 /*@@@@@@ overflow is a possible problem here for hi-res samples */
4073 #ifdef EXACT_RICE_BITS_CALCULATION
4074 static __inline unsigned count_rice_bits_in_partition_(
4075 const unsigned rice_parameter,
4076 const unsigned partition_samples,
4077 const FLAC__int32 *residual
4080 unsigned i, partition_bits =
4081 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
4082 (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
4084 for(i = 0; i < partition_samples; i++)
4085 partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
4086 return partition_bits;
4089 static __inline unsigned count_rice_bits_in_partition_(
4090 const unsigned rice_parameter,
4091 const unsigned partition_samples,
4092 const FLAC__uint64 abs_residual_partition_sum
4096 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN +
4097 (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
4100 (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
4101 : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
4103 - (partition_samples >> 1)
4104 /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
4105 * The actual number of bits used is closer to the sum for all i in the partition of abs(residual[i])>>(rice_parameter-1)
4106 * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
4107 * So the subtraction term tries to guess how many extra bits were contributed.
4108 * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
4114 FLAC__bool set_partitioned_rice_(
4115 #ifdef EXACT_RICE_BITS_CALCULATION
4116 const FLAC__int32 residual[],
4118 const FLAC__uint64 abs_residual_partition_sums[],
4119 const unsigned raw_bits_per_partition[],
4120 const unsigned residual_samples,
4121 const unsigned predictor_order,
4122 const unsigned suggested_rice_parameter,
4123 const unsigned rice_parameter_search_dist,
4124 const unsigned partition_order,
4125 const FLAC__bool search_for_escapes,
4126 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
4130 unsigned rice_parameter, partition_bits;
4131 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 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
4184 if(flat_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 = flat_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 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
4258 if(flat_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 = flat_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_()
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);