1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 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 #include "FLAC/assert.h"
50 #include "FLAC/stream_decoder.h"
51 #include "share/alloc.h"
52 #include "share/compat.h"
53 #include "protected/stream_encoder.h"
54 #include "private/bitwriter.h"
55 #include "private/bitmath.h"
56 #include "private/crc.h"
57 #include "private/cpu.h"
58 #include "private/fixed.h"
59 #include "private/format.h"
60 #include "private/lpc.h"
61 #include "private/md5.h"
62 #include "private/memory.h"
63 #include "private/macros.h"
65 #include "private/ogg_helper.h"
66 #include "private/ogg_mapping.h"
68 #include "private/stream_encoder_framing.h"
69 #include "private/window.h"
72 /* Exact Rice codeword length calculation is off by default. The simple
73 * (and fast) estimation (of how many bits a residual value will be
74 * encoded with) in this encoder is very good, almost always yielding
75 * compression within 0.1% of exact calculation.
77 #undef EXACT_RICE_BITS_CALCULATION
78 /* Rice parameter searching is off by default. The simple (and fast)
79 * parameter estimation in this encoder is very good, almost always
80 * yielding compression within 0.1% of the optimal parameters.
82 #undef ENABLE_RICE_PARAMETER_SEARCH
86 FLAC__int32 *data[FLAC__MAX_CHANNELS];
87 unsigned size; /* of each data[] in samples */
92 const FLAC__byte *data;
99 ENCODER_IN_METADATA = 1,
103 static struct CompressionLevels {
104 FLAC__bool do_mid_side_stereo;
105 FLAC__bool loose_mid_side_stereo;
106 unsigned max_lpc_order;
107 unsigned qlp_coeff_precision;
108 FLAC__bool do_qlp_coeff_prec_search;
109 FLAC__bool do_escape_coding;
110 FLAC__bool do_exhaustive_model_search;
111 unsigned min_residual_partition_order;
112 unsigned max_residual_partition_order;
113 unsigned rice_parameter_search_dist;
114 } compression_levels_[] = {
115 { false, false, 0, 0, false, false, false, 0, 3, 0 },
116 { true , true , 0, 0, false, false, false, 0, 3, 0 },
117 { true , false, 0, 0, false, false, false, 0, 3, 0 },
118 { false, false, 6, 0, false, false, false, 0, 4, 0 },
119 { true , true , 8, 0, false, false, false, 0, 4, 0 },
120 { true , false, 8, 0, false, false, false, 0, 5, 0 },
121 { true , false, 8, 0, false, false, false, 0, 6, 0 },
122 { true , false, 8, 0, false, false, true , 0, 6, 0 },
123 { true , false, 12, 0, false, false, true , 0, 6, 0 }
127 /***********************************************************************
129 * Private class method prototypes
131 ***********************************************************************/
133 static void set_defaults_(FLAC__StreamEncoder *encoder);
134 static void free_(FLAC__StreamEncoder *encoder);
135 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
136 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
137 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
138 static void update_metadata_(const FLAC__StreamEncoder *encoder);
140 static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
142 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
143 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
145 static FLAC__bool process_subframe_(
146 FLAC__StreamEncoder *encoder,
147 unsigned min_partition_order,
148 unsigned max_partition_order,
149 const FLAC__FrameHeader *frame_header,
150 unsigned subframe_bps,
151 const FLAC__int32 integer_signal[],
152 FLAC__Subframe *subframe[2],
153 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
154 FLAC__int32 *residual[2],
155 unsigned *best_subframe,
159 static FLAC__bool add_subframe_(
160 FLAC__StreamEncoder *encoder,
162 unsigned subframe_bps,
163 const FLAC__Subframe *subframe,
164 FLAC__BitWriter *frame
167 static unsigned evaluate_constant_subframe_(
168 FLAC__StreamEncoder *encoder,
169 const FLAC__int32 signal,
171 unsigned subframe_bps,
172 FLAC__Subframe *subframe
175 static unsigned evaluate_fixed_subframe_(
176 FLAC__StreamEncoder *encoder,
177 const FLAC__int32 signal[],
178 FLAC__int32 residual[],
179 FLAC__uint64 abs_residual_partition_sums[],
180 unsigned raw_bits_per_partition[],
182 unsigned subframe_bps,
184 unsigned rice_parameter,
185 unsigned rice_parameter_limit,
186 unsigned min_partition_order,
187 unsigned max_partition_order,
188 FLAC__bool do_escape_coding,
189 unsigned rice_parameter_search_dist,
190 FLAC__Subframe *subframe,
191 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
194 #ifndef FLAC__INTEGER_ONLY_LIBRARY
195 static unsigned evaluate_lpc_subframe_(
196 FLAC__StreamEncoder *encoder,
197 const FLAC__int32 signal[],
198 FLAC__int32 residual[],
199 FLAC__uint64 abs_residual_partition_sums[],
200 unsigned raw_bits_per_partition[],
201 const FLAC__real lp_coeff[],
203 unsigned subframe_bps,
205 unsigned qlp_coeff_precision,
206 unsigned rice_parameter,
207 unsigned rice_parameter_limit,
208 unsigned min_partition_order,
209 unsigned max_partition_order,
210 FLAC__bool do_escape_coding,
211 unsigned rice_parameter_search_dist,
212 FLAC__Subframe *subframe,
213 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
217 static unsigned evaluate_verbatim_subframe_(
218 FLAC__StreamEncoder *encoder,
219 const FLAC__int32 signal[],
221 unsigned subframe_bps,
222 FLAC__Subframe *subframe
225 static unsigned find_best_partition_order_(
226 struct FLAC__StreamEncoderPrivate *private_,
227 const FLAC__int32 residual[],
228 FLAC__uint64 abs_residual_partition_sums[],
229 unsigned raw_bits_per_partition[],
230 unsigned residual_samples,
231 unsigned predictor_order,
232 unsigned rice_parameter,
233 unsigned rice_parameter_limit,
234 unsigned min_partition_order,
235 unsigned max_partition_order,
237 FLAC__bool do_escape_coding,
238 unsigned rice_parameter_search_dist,
239 FLAC__EntropyCodingMethod *best_ecm
242 static void precompute_partition_info_sums_(
243 const FLAC__int32 residual[],
244 FLAC__uint64 abs_residual_partition_sums[],
245 unsigned residual_samples,
246 unsigned predictor_order,
247 unsigned min_partition_order,
248 unsigned max_partition_order,
252 static void precompute_partition_info_escapes_(
253 const FLAC__int32 residual[],
254 unsigned raw_bits_per_partition[],
255 unsigned residual_samples,
256 unsigned predictor_order,
257 unsigned min_partition_order,
258 unsigned max_partition_order
261 static FLAC__bool set_partitioned_rice_(
262 #ifdef EXACT_RICE_BITS_CALCULATION
263 const FLAC__int32 residual[],
265 const FLAC__uint64 abs_residual_partition_sums[],
266 const unsigned raw_bits_per_partition[],
267 const unsigned residual_samples,
268 const unsigned predictor_order,
269 const unsigned suggested_rice_parameter,
270 const unsigned rice_parameter_limit,
271 const unsigned rice_parameter_search_dist,
272 const unsigned partition_order,
273 const FLAC__bool search_for_escapes,
274 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
278 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
280 /* verify-related routines: */
281 static void append_to_verify_fifo_(
282 verify_input_fifo *fifo,
283 const FLAC__int32 * const input[],
284 unsigned input_offset,
286 unsigned wide_samples
289 static void append_to_verify_fifo_interleaved_(
290 verify_input_fifo *fifo,
291 const FLAC__int32 input[],
292 unsigned input_offset,
294 unsigned wide_samples
297 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
298 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
299 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
300 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
302 static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
303 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
304 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
305 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);
306 static FILE *get_binary_stdout_(void);
309 /***********************************************************************
313 ***********************************************************************/
315 typedef struct FLAC__StreamEncoderPrivate {
316 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
317 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
318 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
319 #ifndef FLAC__INTEGER_ONLY_LIBRARY
320 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */
321 FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */
322 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
323 FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */
325 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
326 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
327 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
328 FLAC__int32 *residual_workspace_mid_side[2][2];
329 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
330 FLAC__Subframe subframe_workspace_mid_side[2][2];
331 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
332 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
333 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
334 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
335 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
336 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
337 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
338 unsigned best_subframe_mid_side[2];
339 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
340 unsigned best_subframe_bits_mid_side[2];
341 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
342 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
343 FLAC__BitWriter *frame; /* the current frame being worked on */
344 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
345 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
346 FLAC__ChannelAssignment last_channel_assignment;
347 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
348 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
349 unsigned current_sample_number;
350 unsigned current_frame_number;
351 FLAC__MD5Context md5context;
352 FLAC__CPUInfo cpuinfo;
353 #ifndef FLAC__INTEGER_ONLY_LIBRARY
354 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
356 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
358 #ifndef FLAC__INTEGER_ONLY_LIBRARY
359 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
360 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[]);
361 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[]);
362 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[]);
364 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
365 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
366 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
367 FLAC__bool disable_constant_subframes;
368 FLAC__bool disable_fixed_subframes;
369 FLAC__bool disable_verbatim_subframes;
373 FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
374 FLAC__StreamEncoderSeekCallback seek_callback;
375 FLAC__StreamEncoderTellCallback tell_callback;
376 FLAC__StreamEncoderWriteCallback write_callback;
377 FLAC__StreamEncoderMetadataCallback metadata_callback;
378 FLAC__StreamEncoderProgressCallback progress_callback;
380 unsigned first_seekpoint_to_check;
381 FILE *file; /* only used when encoding to a file */
382 FLAC__uint64 bytes_written;
383 FLAC__uint64 samples_written;
384 unsigned frames_written;
385 unsigned total_frames_estimate;
386 /* unaligned (original) pointers to allocated data */
387 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
388 FLAC__int32 *integer_signal_mid_side_unaligned[2];
389 #ifndef FLAC__INTEGER_ONLY_LIBRARY
390 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */
391 FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */
392 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
393 FLAC__real *windowed_signal_unaligned;
395 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
396 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
397 FLAC__uint64 *abs_residual_partition_sums_unaligned;
398 unsigned *raw_bits_per_partition_unaligned;
400 * These fields have been moved here from private function local
401 * declarations merely to save stack space during encoding.
403 #ifndef FLAC__INTEGER_ONLY_LIBRARY
404 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
406 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
408 * The data for the verify section
411 FLAC__StreamDecoder *decoder;
412 EncoderStateHint state_hint;
413 FLAC__bool needs_magic_hack;
414 verify_input_fifo input_fifo;
415 verify_output output;
417 FLAC__uint64 absolute_sample;
418 unsigned frame_number;
421 FLAC__int32 expected;
425 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
426 } FLAC__StreamEncoderPrivate;
428 /***********************************************************************
430 * Public static class data
432 ***********************************************************************/
434 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
435 "FLAC__STREAM_ENCODER_OK",
436 "FLAC__STREAM_ENCODER_UNINITIALIZED",
437 "FLAC__STREAM_ENCODER_OGG_ERROR",
438 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
439 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
440 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
441 "FLAC__STREAM_ENCODER_IO_ERROR",
442 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
443 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
446 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
447 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
448 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
449 "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
450 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
451 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
452 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
453 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
454 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
455 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
456 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
457 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
458 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
459 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
460 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
463 FLAC_API const char * const FLAC__treamEncoderReadStatusString[] = {
464 "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
465 "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
466 "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
467 "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
470 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
471 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
472 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
475 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
476 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
477 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
478 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
481 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
482 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
483 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
484 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
487 /* Number of samples that will be overread to watch for end of stream. By
488 * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
489 * always try to read blocksize+1 samples before encoding a block, so that
490 * even if the stream has a total sample count that is an integral multiple
491 * of the blocksize, we will still notice when we are encoding the last
492 * block. This is needed, for example, to correctly set the end-of-stream
493 * marker in Ogg FLAC.
495 * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
496 * not really any reason to change it.
498 static const unsigned OVERREAD_ = 1;
500 /***********************************************************************
502 * Class constructor/destructor
505 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void)
507 FLAC__StreamEncoder *encoder;
510 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
512 encoder = calloc(1, sizeof(FLAC__StreamEncoder));
517 encoder->protected_ = calloc(1, sizeof(FLAC__StreamEncoderProtected));
518 if(encoder->protected_ == 0) {
523 encoder->private_ = calloc(1, sizeof(FLAC__StreamEncoderPrivate));
524 if(encoder->private_ == 0) {
525 free(encoder->protected_);
530 encoder->private_->frame = FLAC__bitwriter_new();
531 if(encoder->private_->frame == 0) {
532 free(encoder->private_);
533 free(encoder->protected_);
538 encoder->private_->file = 0;
540 set_defaults_(encoder);
542 encoder->private_->is_being_deleted = false;
544 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
545 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
546 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
548 for(i = 0; i < 2; i++) {
549 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
550 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
552 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
553 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
554 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
556 for(i = 0; i < 2; i++) {
557 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
558 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
561 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
562 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
563 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
565 for(i = 0; i < 2; i++) {
566 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
567 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
569 for(i = 0; i < 2; i++)
570 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
572 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
577 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
581 FLAC__ASSERT(0 != encoder);
582 FLAC__ASSERT(0 != encoder->protected_);
583 FLAC__ASSERT(0 != encoder->private_);
584 FLAC__ASSERT(0 != encoder->private_->frame);
586 encoder->private_->is_being_deleted = true;
588 (void)FLAC__stream_encoder_finish(encoder);
590 if(0 != encoder->private_->verify.decoder)
591 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
593 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
594 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
595 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
597 for(i = 0; i < 2; i++) {
598 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
599 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
601 for(i = 0; i < 2; i++)
602 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
604 FLAC__bitwriter_delete(encoder->private_->frame);
605 free(encoder->private_);
606 free(encoder->protected_);
610 /***********************************************************************
612 * Public class methods
614 ***********************************************************************/
616 static FLAC__StreamEncoderInitStatus init_stream_internal_(
617 FLAC__StreamEncoder *encoder,
618 FLAC__StreamEncoderReadCallback read_callback,
619 FLAC__StreamEncoderWriteCallback write_callback,
620 FLAC__StreamEncoderSeekCallback seek_callback,
621 FLAC__StreamEncoderTellCallback tell_callback,
622 FLAC__StreamEncoderMetadataCallback metadata_callback,
628 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
630 FLAC__ASSERT(0 != encoder);
632 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
633 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
637 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
640 if(0 == write_callback || (seek_callback && 0 == tell_callback))
641 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
643 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
644 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
646 if(encoder->protected_->channels != 2) {
647 encoder->protected_->do_mid_side_stereo = false;
648 encoder->protected_->loose_mid_side_stereo = false;
650 else if(!encoder->protected_->do_mid_side_stereo)
651 encoder->protected_->loose_mid_side_stereo = false;
653 if(encoder->protected_->bits_per_sample >= 32)
654 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
656 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
657 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
659 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
660 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
662 if(encoder->protected_->blocksize == 0) {
663 if(encoder->protected_->max_lpc_order == 0)
664 encoder->protected_->blocksize = 1152;
666 encoder->protected_->blocksize = 4096;
669 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
670 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
672 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
673 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
675 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
676 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
678 if(encoder->protected_->qlp_coeff_precision == 0) {
679 if(encoder->protected_->bits_per_sample < 16) {
680 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
681 /* @@@ until then we'll make a guess */
682 encoder->protected_->qlp_coeff_precision = flac_max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
684 else if(encoder->protected_->bits_per_sample == 16) {
685 if(encoder->protected_->blocksize <= 192)
686 encoder->protected_->qlp_coeff_precision = 7;
687 else if(encoder->protected_->blocksize <= 384)
688 encoder->protected_->qlp_coeff_precision = 8;
689 else if(encoder->protected_->blocksize <= 576)
690 encoder->protected_->qlp_coeff_precision = 9;
691 else if(encoder->protected_->blocksize <= 1152)
692 encoder->protected_->qlp_coeff_precision = 10;
693 else if(encoder->protected_->blocksize <= 2304)
694 encoder->protected_->qlp_coeff_precision = 11;
695 else if(encoder->protected_->blocksize <= 4608)
696 encoder->protected_->qlp_coeff_precision = 12;
698 encoder->protected_->qlp_coeff_precision = 13;
701 if(encoder->protected_->blocksize <= 384)
702 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
703 else if(encoder->protected_->blocksize <= 1152)
704 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
706 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
708 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
710 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
711 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
713 if(encoder->protected_->streamable_subset) {
714 if(!FLAC__format_blocksize_is_subset(encoder->protected_->blocksize, encoder->protected_->sample_rate))
715 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
716 if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate))
717 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
719 encoder->protected_->bits_per_sample != 8 &&
720 encoder->protected_->bits_per_sample != 12 &&
721 encoder->protected_->bits_per_sample != 16 &&
722 encoder->protected_->bits_per_sample != 20 &&
723 encoder->protected_->bits_per_sample != 24
725 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
726 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
727 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
729 encoder->protected_->sample_rate <= 48000 &&
731 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
732 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
735 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
739 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
740 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
741 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
742 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
745 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
746 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
748 for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
749 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
750 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
752 encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
753 encoder->protected_->metadata[0] = vc;
759 /* keep track of any SEEKTABLE block */
760 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
762 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
763 if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
764 encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
765 break; /* take only the first one */
770 /* validate metadata */
771 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
772 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
773 metadata_has_seektable = false;
774 metadata_has_vorbis_comment = false;
775 metadata_picture_has_type1 = false;
776 metadata_picture_has_type2 = false;
777 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
778 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
779 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
780 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
781 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
782 if(metadata_has_seektable) /* only one is allowed */
783 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
784 metadata_has_seektable = true;
785 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
786 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
788 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
789 if(metadata_has_vorbis_comment) /* only one is allowed */
790 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
791 metadata_has_vorbis_comment = true;
793 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
794 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
795 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
797 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
798 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
799 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
800 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
801 if(metadata_picture_has_type1) /* there should only be 1 per stream */
802 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
803 metadata_picture_has_type1 = true;
804 /* standard icon must be 32x32 pixel PNG */
806 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
808 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
809 m->data.picture.width != 32 ||
810 m->data.picture.height != 32
813 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
815 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
816 if(metadata_picture_has_type2) /* there should only be 1 per stream */
817 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
818 metadata_picture_has_type2 = true;
823 encoder->private_->input_capacity = 0;
824 for(i = 0; i < encoder->protected_->channels; i++) {
825 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
826 #ifndef FLAC__INTEGER_ONLY_LIBRARY
827 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
830 for(i = 0; i < 2; i++) {
831 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
832 #ifndef FLAC__INTEGER_ONLY_LIBRARY
833 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
836 #ifndef FLAC__INTEGER_ONLY_LIBRARY
837 for(i = 0; i < encoder->protected_->num_apodizations; i++)
838 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
839 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
841 for(i = 0; i < encoder->protected_->channels; i++) {
842 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
843 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
844 encoder->private_->best_subframe[i] = 0;
846 for(i = 0; i < 2; i++) {
847 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
848 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
849 encoder->private_->best_subframe_mid_side[i] = 0;
851 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
852 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
853 #ifndef FLAC__INTEGER_ONLY_LIBRARY
854 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
856 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
857 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
858 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
859 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
860 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
861 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
862 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);
864 if(encoder->private_->loose_mid_side_stereo_frames == 0)
865 encoder->private_->loose_mid_side_stereo_frames = 1;
866 encoder->private_->loose_mid_side_stereo_frame_count = 0;
867 encoder->private_->current_sample_number = 0;
868 encoder->private_->current_frame_number = 0;
870 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
871 encoder->private_->use_wide_by_order = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(flac_max(encoder->protected_->max_lpc_order, FLAC__MAX_FIXED_ORDER))+1 > 30); /*@@@ need to use this? */
872 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
875 * get the CPU info and set the function pointers
877 FLAC__cpu_info(&encoder->private_->cpuinfo);
878 /* first default to the non-asm routines */
879 #ifndef FLAC__INTEGER_ONLY_LIBRARY
880 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
882 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
883 #ifndef FLAC__INTEGER_ONLY_LIBRARY
884 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
885 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
886 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
888 /* now override with asm where appropriate */
889 #ifndef FLAC__INTEGER_ONLY_LIBRARY
890 # ifndef FLAC__NO_ASM
891 if(encoder->private_->cpuinfo.use_asm) {
892 # ifdef FLAC__CPU_IA32
893 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
894 # ifdef FLAC__HAS_NASM
895 if(encoder->private_->cpuinfo.data.ia32.sse) {
896 if(encoder->protected_->max_lpc_order < 4)
897 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
898 else if(encoder->protected_->max_lpc_order < 8)
899 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
900 else if(encoder->protected_->max_lpc_order < 12)
901 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
903 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
905 else if(encoder->private_->cpuinfo.data.ia32._3dnow)
906 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
908 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
909 if(encoder->private_->cpuinfo.data.ia32.mmx) {
910 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
911 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
914 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
915 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
917 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
918 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
919 # endif /* FLAC__HAS_NASM */
920 # endif /* FLAC__CPU_IA32 */
922 # endif /* !FLAC__NO_ASM */
923 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
924 /* finally override based on wide-ness if necessary */
925 if(encoder->private_->use_wide_by_block) {
926 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
929 /* set state to OK; from here on, errors are fatal and we'll override the state then */
930 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
933 encoder->private_->is_ogg = is_ogg;
934 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
935 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
936 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
940 encoder->private_->read_callback = read_callback;
941 encoder->private_->write_callback = write_callback;
942 encoder->private_->seek_callback = seek_callback;
943 encoder->private_->tell_callback = tell_callback;
944 encoder->private_->metadata_callback = metadata_callback;
945 encoder->private_->client_data = client_data;
947 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
948 /* the above function sets the state for us in case of an error */
949 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
952 if(!FLAC__bitwriter_init(encoder->private_->frame)) {
953 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
954 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
958 * Set up the verify stuff if necessary
960 if(encoder->protected_->verify) {
962 * First, set up the fifo which will hold the
963 * original signal to compare against
965 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
966 for(i = 0; i < encoder->protected_->channels; i++) {
967 if(0 == (encoder->private_->verify.input_fifo.data[i] = safe_malloc_mul_2op_(sizeof(FLAC__int32), /*times*/encoder->private_->verify.input_fifo.size))) {
968 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
969 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
972 encoder->private_->verify.input_fifo.tail = 0;
975 * Now set up a stream decoder for verification
977 if(0 == encoder->private_->verify.decoder) {
978 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
979 if(0 == encoder->private_->verify.decoder) {
980 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
981 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
985 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) {
986 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
987 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
990 encoder->private_->verify.error_stats.absolute_sample = 0;
991 encoder->private_->verify.error_stats.frame_number = 0;
992 encoder->private_->verify.error_stats.channel = 0;
993 encoder->private_->verify.error_stats.sample = 0;
994 encoder->private_->verify.error_stats.expected = 0;
995 encoder->private_->verify.error_stats.got = 0;
998 * These must be done before we write any metadata, because that
999 * calls the write_callback, which uses these values.
1001 encoder->private_->first_seekpoint_to_check = 0;
1002 encoder->private_->samples_written = 0;
1003 encoder->protected_->streaminfo_offset = 0;
1004 encoder->protected_->seektable_offset = 0;
1005 encoder->protected_->audio_offset = 0;
1008 * write the stream header
1010 if(encoder->protected_->verify)
1011 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1012 if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1013 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1014 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1016 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1017 /* the above function sets the state for us in case of an error */
1018 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1022 * write the STREAMINFO metadata block
1024 if(encoder->protected_->verify)
1025 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1026 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1027 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1028 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1029 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1030 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1031 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1032 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1033 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1034 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1035 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1036 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1037 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1038 if(encoder->protected_->do_md5)
1039 FLAC__MD5Init(&encoder->private_->md5context);
1040 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1041 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1042 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1044 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1045 /* the above function sets the state for us in case of an error */
1046 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1050 * Now that the STREAMINFO block is written, we can init this to an
1051 * absurdly-high value...
1053 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1054 /* ... and clear this to 0 */
1055 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1058 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1059 * if not, we will write an empty one (FLAC__add_metadata_block()
1060 * automatically supplies the vendor string).
1062 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1063 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1064 * true it will have already insured that the metadata list is properly
1067 if(!metadata_has_vorbis_comment) {
1068 FLAC__StreamMetadata vorbis_comment;
1069 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1070 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1071 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1072 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1073 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1074 vorbis_comment.data.vorbis_comment.num_comments = 0;
1075 vorbis_comment.data.vorbis_comment.comments = 0;
1076 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1077 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1078 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1080 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1081 /* the above function sets the state for us in case of an error */
1082 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1087 * write the user's metadata blocks
1089 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1090 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1091 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1092 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1093 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1095 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1096 /* the above function sets the state for us in case of an error */
1097 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1101 /* now that all the metadata is written, we save the stream offset */
1102 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 */
1103 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1104 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1107 if(encoder->protected_->verify)
1108 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1110 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1113 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1114 FLAC__StreamEncoder *encoder,
1115 FLAC__StreamEncoderWriteCallback write_callback,
1116 FLAC__StreamEncoderSeekCallback seek_callback,
1117 FLAC__StreamEncoderTellCallback tell_callback,
1118 FLAC__StreamEncoderMetadataCallback metadata_callback,
1122 return init_stream_internal_(
1124 /*read_callback=*/0,
1134 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1135 FLAC__StreamEncoder *encoder,
1136 FLAC__StreamEncoderReadCallback read_callback,
1137 FLAC__StreamEncoderWriteCallback write_callback,
1138 FLAC__StreamEncoderSeekCallback seek_callback,
1139 FLAC__StreamEncoderTellCallback tell_callback,
1140 FLAC__StreamEncoderMetadataCallback metadata_callback,
1144 return init_stream_internal_(
1156 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1157 FLAC__StreamEncoder *encoder,
1159 FLAC__StreamEncoderProgressCallback progress_callback,
1164 FLAC__StreamEncoderInitStatus init_status;
1166 FLAC__ASSERT(0 != encoder);
1167 FLAC__ASSERT(0 != file);
1169 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1170 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1172 /* double protection */
1174 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1175 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1179 * To make sure that our file does not go unclosed after an error, we
1180 * must assign the FILE pointer before any further error can occur in
1184 file = get_binary_stdout_(); /* just to be safe */
1186 encoder->private_->file = file;
1188 encoder->private_->progress_callback = progress_callback;
1189 encoder->private_->bytes_written = 0;
1190 encoder->private_->samples_written = 0;
1191 encoder->private_->frames_written = 0;
1193 init_status = init_stream_internal_(
1195 encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
1196 file_write_callback_,
1197 encoder->private_->file == stdout? 0 : file_seek_callback_,
1198 encoder->private_->file == stdout? 0 : file_tell_callback_,
1199 /*metadata_callback=*/0,
1203 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1204 /* the above function sets the state for us in case of an error */
1209 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1211 FLAC__ASSERT(blocksize != 0);
1212 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1218 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1219 FLAC__StreamEncoder *encoder,
1221 FLAC__StreamEncoderProgressCallback progress_callback,
1225 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1228 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1229 FLAC__StreamEncoder *encoder,
1231 FLAC__StreamEncoderProgressCallback progress_callback,
1235 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1238 static FLAC__StreamEncoderInitStatus init_file_internal_(
1239 FLAC__StreamEncoder *encoder,
1240 const char *filename,
1241 FLAC__StreamEncoderProgressCallback progress_callback,
1248 FLAC__ASSERT(0 != encoder);
1251 * To make sure that our file does not go unclosed after an error, we
1252 * have to do the same entrance checks here that are later performed
1253 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1255 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1256 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1258 file = filename? fopen(filename, "w+b") : stdout;
1261 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1262 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1265 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1268 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
1269 FLAC__StreamEncoder *encoder,
1270 const char *filename,
1271 FLAC__StreamEncoderProgressCallback progress_callback,
1275 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
1278 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1279 FLAC__StreamEncoder *encoder,
1280 const char *filename,
1281 FLAC__StreamEncoderProgressCallback progress_callback,
1285 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1288 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1290 FLAC__bool error = false;
1292 FLAC__ASSERT(0 != encoder);
1293 FLAC__ASSERT(0 != encoder->private_);
1294 FLAC__ASSERT(0 != encoder->protected_);
1296 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1299 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1300 if(encoder->private_->current_sample_number != 0) {
1301 const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
1302 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1303 if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
1308 if(encoder->protected_->do_md5)
1309 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1311 if(!encoder->private_->is_being_deleted) {
1312 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
1313 if(encoder->private_->seek_callback) {
1315 if(encoder->private_->is_ogg)
1316 update_ogg_metadata_(encoder);
1319 update_metadata_(encoder);
1321 /* check if an error occurred while updating metadata */
1322 if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
1325 if(encoder->private_->metadata_callback)
1326 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1329 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
1331 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1336 if(0 != encoder->private_->file) {
1337 if(encoder->private_->file != stdout)
1338 fclose(encoder->private_->file);
1339 encoder->private_->file = 0;
1343 if(encoder->private_->is_ogg)
1344 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1348 set_defaults_(encoder);
1351 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1356 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1358 FLAC__ASSERT(0 != encoder);
1359 FLAC__ASSERT(0 != encoder->private_);
1360 FLAC__ASSERT(0 != encoder->protected_);
1361 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1364 /* can't check encoder->private_->is_ogg since that's not set until init time */
1365 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1373 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1375 FLAC__ASSERT(0 != encoder);
1376 FLAC__ASSERT(0 != encoder->private_);
1377 FLAC__ASSERT(0 != encoder->protected_);
1378 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1380 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1381 encoder->protected_->verify = value;
1386 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1388 FLAC__ASSERT(0 != encoder);
1389 FLAC__ASSERT(0 != encoder->private_);
1390 FLAC__ASSERT(0 != encoder->protected_);
1391 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1393 encoder->protected_->streamable_subset = value;
1397 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value)
1399 FLAC__ASSERT(0 != encoder);
1400 FLAC__ASSERT(0 != encoder->private_);
1401 FLAC__ASSERT(0 != encoder->protected_);
1402 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1404 encoder->protected_->do_md5 = value;
1408 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1410 FLAC__ASSERT(0 != encoder);
1411 FLAC__ASSERT(0 != encoder->private_);
1412 FLAC__ASSERT(0 != encoder->protected_);
1413 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1415 encoder->protected_->channels = value;
1419 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1421 FLAC__ASSERT(0 != encoder);
1422 FLAC__ASSERT(0 != encoder->private_);
1423 FLAC__ASSERT(0 != encoder->protected_);
1424 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1426 encoder->protected_->bits_per_sample = value;
1430 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1432 FLAC__ASSERT(0 != encoder);
1433 FLAC__ASSERT(0 != encoder->private_);
1434 FLAC__ASSERT(0 != encoder->protected_);
1435 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1437 encoder->protected_->sample_rate = value;
1441 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1443 FLAC__bool ok = true;
1444 FLAC__ASSERT(0 != encoder);
1445 FLAC__ASSERT(0 != encoder->private_);
1446 FLAC__ASSERT(0 != encoder->protected_);
1447 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1449 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1450 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1451 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1452 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1453 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1456 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1457 /* but it's too hard to specify the string in a locale-specific way */
1459 encoder->protected_->num_apodizations = 1;
1460 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1461 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1464 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1465 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1466 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1467 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1468 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1469 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1470 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1471 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1475 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1477 FLAC__ASSERT(0 != encoder);
1478 FLAC__ASSERT(0 != encoder->private_);
1479 FLAC__ASSERT(0 != encoder->protected_);
1480 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1482 encoder->protected_->blocksize = value;
1486 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1488 FLAC__ASSERT(0 != encoder);
1489 FLAC__ASSERT(0 != encoder->private_);
1490 FLAC__ASSERT(0 != encoder->protected_);
1491 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1493 encoder->protected_->do_mid_side_stereo = value;
1497 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1499 FLAC__ASSERT(0 != encoder);
1500 FLAC__ASSERT(0 != encoder->private_);
1501 FLAC__ASSERT(0 != encoder->protected_);
1502 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1504 encoder->protected_->loose_mid_side_stereo = value;
1508 /*@@@@add to tests*/
1509 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1511 FLAC__ASSERT(0 != encoder);
1512 FLAC__ASSERT(0 != encoder->private_);
1513 FLAC__ASSERT(0 != encoder->protected_);
1514 FLAC__ASSERT(0 != specification);
1515 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1517 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1518 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1520 encoder->protected_->num_apodizations = 0;
1522 const char *s = strchr(specification, ';');
1523 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1524 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1525 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1526 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1527 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1528 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1529 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1530 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1531 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1532 else if(n==6 && 0 == strncmp("connes" , specification, n))
1533 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1534 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1535 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1536 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1537 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1538 if (stddev > 0.0 && stddev <= 0.5) {
1539 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1540 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1543 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1544 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1545 else if(n==4 && 0 == strncmp("hann" , specification, n))
1546 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1547 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1548 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1549 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1550 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1551 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1552 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1553 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1554 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1555 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1556 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1557 if (p >= 0.0 && p <= 1.0) {
1558 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1559 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1562 else if(n==5 && 0 == strncmp("welch" , specification, n))
1563 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1564 if (encoder->protected_->num_apodizations == 32)
1567 specification = s+1;
1571 if(encoder->protected_->num_apodizations == 0) {
1572 encoder->protected_->num_apodizations = 1;
1573 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1574 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1580 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1582 FLAC__ASSERT(0 != encoder);
1583 FLAC__ASSERT(0 != encoder->private_);
1584 FLAC__ASSERT(0 != encoder->protected_);
1585 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1587 encoder->protected_->max_lpc_order = value;
1591 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1593 FLAC__ASSERT(0 != encoder);
1594 FLAC__ASSERT(0 != encoder->private_);
1595 FLAC__ASSERT(0 != encoder->protected_);
1596 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1598 encoder->protected_->qlp_coeff_precision = value;
1602 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1604 FLAC__ASSERT(0 != encoder);
1605 FLAC__ASSERT(0 != encoder->private_);
1606 FLAC__ASSERT(0 != encoder->protected_);
1607 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1609 encoder->protected_->do_qlp_coeff_prec_search = value;
1613 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1615 FLAC__ASSERT(0 != encoder);
1616 FLAC__ASSERT(0 != encoder->private_);
1617 FLAC__ASSERT(0 != encoder->protected_);
1618 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1621 /*@@@ deprecated: */
1622 encoder->protected_->do_escape_coding = value;
1629 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1631 FLAC__ASSERT(0 != encoder);
1632 FLAC__ASSERT(0 != encoder->private_);
1633 FLAC__ASSERT(0 != encoder->protected_);
1634 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1636 encoder->protected_->do_exhaustive_model_search = value;
1640 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1642 FLAC__ASSERT(0 != encoder);
1643 FLAC__ASSERT(0 != encoder->private_);
1644 FLAC__ASSERT(0 != encoder->protected_);
1645 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1647 encoder->protected_->min_residual_partition_order = value;
1651 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1653 FLAC__ASSERT(0 != encoder);
1654 FLAC__ASSERT(0 != encoder->private_);
1655 FLAC__ASSERT(0 != encoder->protected_);
1656 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1658 encoder->protected_->max_residual_partition_order = value;
1662 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1664 FLAC__ASSERT(0 != encoder);
1665 FLAC__ASSERT(0 != encoder->private_);
1666 FLAC__ASSERT(0 != encoder->protected_);
1667 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1670 /*@@@ deprecated: */
1671 encoder->protected_->rice_parameter_search_dist = value;
1678 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1680 FLAC__ASSERT(0 != encoder);
1681 FLAC__ASSERT(0 != encoder->private_);
1682 FLAC__ASSERT(0 != encoder->protected_);
1683 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1685 encoder->protected_->total_samples_estimate = value;
1689 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1691 FLAC__ASSERT(0 != encoder);
1692 FLAC__ASSERT(0 != encoder->private_);
1693 FLAC__ASSERT(0 != encoder->protected_);
1694 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1700 /* realloc() does not do exactly what we want so... */
1701 if(encoder->protected_->metadata) {
1702 free(encoder->protected_->metadata);
1703 encoder->protected_->metadata = 0;
1704 encoder->protected_->num_metadata_blocks = 0;
1707 FLAC__StreamMetadata **m;
1708 if(0 == (m = safe_malloc_mul_2op_(sizeof(m[0]), /*times*/num_blocks)))
1710 memcpy(m, metadata, sizeof(m[0]) * num_blocks);
1711 encoder->protected_->metadata = m;
1712 encoder->protected_->num_metadata_blocks = num_blocks;
1715 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1722 * These three functions are not static, but not publically exposed in
1723 * include/FLAC/ either. They are used by the test suite.
1725 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1727 FLAC__ASSERT(0 != encoder);
1728 FLAC__ASSERT(0 != encoder->private_);
1729 FLAC__ASSERT(0 != encoder->protected_);
1730 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1732 encoder->private_->disable_constant_subframes = value;
1736 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1738 FLAC__ASSERT(0 != encoder);
1739 FLAC__ASSERT(0 != encoder->private_);
1740 FLAC__ASSERT(0 != encoder->protected_);
1741 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1743 encoder->private_->disable_fixed_subframes = value;
1747 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1749 FLAC__ASSERT(0 != encoder);
1750 FLAC__ASSERT(0 != encoder->private_);
1751 FLAC__ASSERT(0 != encoder->protected_);
1752 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1754 encoder->private_->disable_verbatim_subframes = value;
1758 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1760 FLAC__ASSERT(0 != encoder);
1761 FLAC__ASSERT(0 != encoder->private_);
1762 FLAC__ASSERT(0 != encoder->protected_);
1763 return encoder->protected_->state;
1766 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1768 FLAC__ASSERT(0 != encoder);
1769 FLAC__ASSERT(0 != encoder->private_);
1770 FLAC__ASSERT(0 != encoder->protected_);
1771 if(encoder->protected_->verify)
1772 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1774 return FLAC__STREAM_DECODER_UNINITIALIZED;
1777 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1779 FLAC__ASSERT(0 != encoder);
1780 FLAC__ASSERT(0 != encoder->private_);
1781 FLAC__ASSERT(0 != encoder->protected_);
1782 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1783 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1785 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1788 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)
1790 FLAC__ASSERT(0 != encoder);
1791 FLAC__ASSERT(0 != encoder->private_);
1792 FLAC__ASSERT(0 != encoder->protected_);
1793 if(0 != absolute_sample)
1794 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1795 if(0 != frame_number)
1796 *frame_number = encoder->private_->verify.error_stats.frame_number;
1798 *channel = encoder->private_->verify.error_stats.channel;
1800 *sample = encoder->private_->verify.error_stats.sample;
1802 *expected = encoder->private_->verify.error_stats.expected;
1804 *got = encoder->private_->verify.error_stats.got;
1807 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1809 FLAC__ASSERT(0 != encoder);
1810 FLAC__ASSERT(0 != encoder->private_);
1811 FLAC__ASSERT(0 != encoder->protected_);
1812 return encoder->protected_->verify;
1815 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1817 FLAC__ASSERT(0 != encoder);
1818 FLAC__ASSERT(0 != encoder->private_);
1819 FLAC__ASSERT(0 != encoder->protected_);
1820 return encoder->protected_->streamable_subset;
1823 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder)
1825 FLAC__ASSERT(0 != encoder);
1826 FLAC__ASSERT(0 != encoder->private_);
1827 FLAC__ASSERT(0 != encoder->protected_);
1828 return encoder->protected_->do_md5;
1831 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1833 FLAC__ASSERT(0 != encoder);
1834 FLAC__ASSERT(0 != encoder->private_);
1835 FLAC__ASSERT(0 != encoder->protected_);
1836 return encoder->protected_->channels;
1839 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1841 FLAC__ASSERT(0 != encoder);
1842 FLAC__ASSERT(0 != encoder->private_);
1843 FLAC__ASSERT(0 != encoder->protected_);
1844 return encoder->protected_->bits_per_sample;
1847 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1849 FLAC__ASSERT(0 != encoder);
1850 FLAC__ASSERT(0 != encoder->private_);
1851 FLAC__ASSERT(0 != encoder->protected_);
1852 return encoder->protected_->sample_rate;
1855 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1857 FLAC__ASSERT(0 != encoder);
1858 FLAC__ASSERT(0 != encoder->private_);
1859 FLAC__ASSERT(0 != encoder->protected_);
1860 return encoder->protected_->blocksize;
1863 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1865 FLAC__ASSERT(0 != encoder);
1866 FLAC__ASSERT(0 != encoder->private_);
1867 FLAC__ASSERT(0 != encoder->protected_);
1868 return encoder->protected_->do_mid_side_stereo;
1871 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1873 FLAC__ASSERT(0 != encoder);
1874 FLAC__ASSERT(0 != encoder->private_);
1875 FLAC__ASSERT(0 != encoder->protected_);
1876 return encoder->protected_->loose_mid_side_stereo;
1879 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1881 FLAC__ASSERT(0 != encoder);
1882 FLAC__ASSERT(0 != encoder->private_);
1883 FLAC__ASSERT(0 != encoder->protected_);
1884 return encoder->protected_->max_lpc_order;
1887 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1889 FLAC__ASSERT(0 != encoder);
1890 FLAC__ASSERT(0 != encoder->private_);
1891 FLAC__ASSERT(0 != encoder->protected_);
1892 return encoder->protected_->qlp_coeff_precision;
1895 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1897 FLAC__ASSERT(0 != encoder);
1898 FLAC__ASSERT(0 != encoder->private_);
1899 FLAC__ASSERT(0 != encoder->protected_);
1900 return encoder->protected_->do_qlp_coeff_prec_search;
1903 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1905 FLAC__ASSERT(0 != encoder);
1906 FLAC__ASSERT(0 != encoder->private_);
1907 FLAC__ASSERT(0 != encoder->protected_);
1908 return encoder->protected_->do_escape_coding;
1911 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1913 FLAC__ASSERT(0 != encoder);
1914 FLAC__ASSERT(0 != encoder->private_);
1915 FLAC__ASSERT(0 != encoder->protected_);
1916 return encoder->protected_->do_exhaustive_model_search;
1919 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1921 FLAC__ASSERT(0 != encoder);
1922 FLAC__ASSERT(0 != encoder->private_);
1923 FLAC__ASSERT(0 != encoder->protected_);
1924 return encoder->protected_->min_residual_partition_order;
1927 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1929 FLAC__ASSERT(0 != encoder);
1930 FLAC__ASSERT(0 != encoder->private_);
1931 FLAC__ASSERT(0 != encoder->protected_);
1932 return encoder->protected_->max_residual_partition_order;
1935 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1937 FLAC__ASSERT(0 != encoder);
1938 FLAC__ASSERT(0 != encoder->private_);
1939 FLAC__ASSERT(0 != encoder->protected_);
1940 return encoder->protected_->rice_parameter_search_dist;
1943 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1945 FLAC__ASSERT(0 != encoder);
1946 FLAC__ASSERT(0 != encoder->private_);
1947 FLAC__ASSERT(0 != encoder->protected_);
1948 return encoder->protected_->total_samples_estimate;
1951 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1953 unsigned i, j = 0, channel;
1954 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1956 FLAC__ASSERT(0 != encoder);
1957 FLAC__ASSERT(0 != encoder->private_);
1958 FLAC__ASSERT(0 != encoder->protected_);
1959 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1962 const unsigned n = flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j);
1964 if(encoder->protected_->verify)
1965 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n);
1967 for(channel = 0; channel < channels; channel++)
1968 memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n);
1970 if(encoder->protected_->do_mid_side_stereo) {
1971 FLAC__ASSERT(channels == 2);
1972 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
1973 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
1974 encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j];
1975 encoder->private_->integer_signal_mid_side[0][i] = (buffer[0][j] + buffer[1][j]) >> 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
1981 encoder->private_->current_sample_number += n;
1983 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
1984 if(encoder->private_->current_sample_number > blocksize) {
1985 FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_);
1986 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
1987 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
1989 /* move unprocessed overread samples to beginnings of arrays */
1990 for(channel = 0; channel < channels; channel++)
1991 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
1992 if(encoder->protected_->do_mid_side_stereo) {
1993 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
1994 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
1996 encoder->private_->current_sample_number = 1;
1998 } while(j < samples);
2003 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2005 unsigned i, j, k, channel;
2006 FLAC__int32 x, mid, side;
2007 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2009 FLAC__ASSERT(0 != encoder);
2010 FLAC__ASSERT(0 != encoder->private_);
2011 FLAC__ASSERT(0 != encoder->protected_);
2012 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2016 * we have several flavors of the same basic loop, optimized for
2017 * different conditions:
2019 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2021 * stereo coding: unroll channel loop
2024 if(encoder->protected_->verify)
2025 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2027 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2028 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2029 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2031 encoder->private_->integer_signal[1][i] = x;
2034 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2035 encoder->private_->integer_signal_mid_side[1][i] = side;
2036 encoder->private_->integer_signal_mid_side[0][i] = mid;
2038 encoder->private_->current_sample_number = i;
2039 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2041 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2043 /* move unprocessed overread samples to beginnings of arrays */
2044 FLAC__ASSERT(i == blocksize+OVERREAD_);
2045 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2046 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize];
2047 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize];
2048 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2049 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2050 encoder->private_->current_sample_number = 1;
2052 } while(j < samples);
2056 * independent channel coding: buffer each channel in inner loop
2059 if(encoder->protected_->verify)
2060 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2062 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2063 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2064 for(channel = 0; channel < channels; channel++)
2065 encoder->private_->integer_signal[channel][i] = buffer[k++];
2067 encoder->private_->current_sample_number = i;
2068 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2070 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2072 /* move unprocessed overread samples to beginnings of arrays */
2073 FLAC__ASSERT(i == blocksize+OVERREAD_);
2074 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2075 for(channel = 0; channel < channels; channel++)
2076 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2077 encoder->private_->current_sample_number = 1;
2079 } while(j < samples);
2085 /***********************************************************************
2087 * Private class methods
2089 ***********************************************************************/
2091 void set_defaults_(FLAC__StreamEncoder *encoder)
2093 FLAC__ASSERT(0 != encoder);
2095 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2096 encoder->protected_->verify = true;
2098 encoder->protected_->verify = false;
2100 encoder->protected_->streamable_subset = true;
2101 encoder->protected_->do_md5 = true;
2102 encoder->protected_->do_mid_side_stereo = false;
2103 encoder->protected_->loose_mid_side_stereo = false;
2104 encoder->protected_->channels = 2;
2105 encoder->protected_->bits_per_sample = 16;
2106 encoder->protected_->sample_rate = 44100;
2107 encoder->protected_->blocksize = 0;
2108 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2109 encoder->protected_->num_apodizations = 1;
2110 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2111 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2113 encoder->protected_->max_lpc_order = 0;
2114 encoder->protected_->qlp_coeff_precision = 0;
2115 encoder->protected_->do_qlp_coeff_prec_search = false;
2116 encoder->protected_->do_exhaustive_model_search = false;
2117 encoder->protected_->do_escape_coding = false;
2118 encoder->protected_->min_residual_partition_order = 0;
2119 encoder->protected_->max_residual_partition_order = 0;
2120 encoder->protected_->rice_parameter_search_dist = 0;
2121 encoder->protected_->total_samples_estimate = 0;
2122 encoder->protected_->metadata = 0;
2123 encoder->protected_->num_metadata_blocks = 0;
2125 encoder->private_->seek_table = 0;
2126 encoder->private_->disable_constant_subframes = false;
2127 encoder->private_->disable_fixed_subframes = false;
2128 encoder->private_->disable_verbatim_subframes = false;
2130 encoder->private_->is_ogg = false;
2132 encoder->private_->read_callback = 0;
2133 encoder->private_->write_callback = 0;
2134 encoder->private_->seek_callback = 0;
2135 encoder->private_->tell_callback = 0;
2136 encoder->private_->metadata_callback = 0;
2137 encoder->private_->progress_callback = 0;
2138 encoder->private_->client_data = 0;
2141 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2144 FLAC__stream_encoder_set_compression_level(encoder, 5);
2147 void free_(FLAC__StreamEncoder *encoder)
2149 unsigned i, channel;
2151 FLAC__ASSERT(0 != encoder);
2152 if(encoder->protected_->metadata) {
2153 free(encoder->protected_->metadata);
2154 encoder->protected_->metadata = 0;
2155 encoder->protected_->num_metadata_blocks = 0;
2157 for(i = 0; i < encoder->protected_->channels; i++) {
2158 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2159 free(encoder->private_->integer_signal_unaligned[i]);
2160 encoder->private_->integer_signal_unaligned[i] = 0;
2162 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2163 if(0 != encoder->private_->real_signal_unaligned[i]) {
2164 free(encoder->private_->real_signal_unaligned[i]);
2165 encoder->private_->real_signal_unaligned[i] = 0;
2169 for(i = 0; i < 2; i++) {
2170 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2171 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2172 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2174 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2175 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2176 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2177 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2181 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2182 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2183 if(0 != encoder->private_->window_unaligned[i]) {
2184 free(encoder->private_->window_unaligned[i]);
2185 encoder->private_->window_unaligned[i] = 0;
2188 if(0 != encoder->private_->windowed_signal_unaligned) {
2189 free(encoder->private_->windowed_signal_unaligned);
2190 encoder->private_->windowed_signal_unaligned = 0;
2193 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2194 for(i = 0; i < 2; i++) {
2195 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2196 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2197 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2201 for(channel = 0; channel < 2; channel++) {
2202 for(i = 0; i < 2; i++) {
2203 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2204 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2205 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2209 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2210 free(encoder->private_->abs_residual_partition_sums_unaligned);
2211 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2213 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2214 free(encoder->private_->raw_bits_per_partition_unaligned);
2215 encoder->private_->raw_bits_per_partition_unaligned = 0;
2217 if(encoder->protected_->verify) {
2218 for(i = 0; i < encoder->protected_->channels; i++) {
2219 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2220 free(encoder->private_->verify.input_fifo.data[i]);
2221 encoder->private_->verify.input_fifo.data[i] = 0;
2225 FLAC__bitwriter_free(encoder->private_->frame);
2228 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2231 unsigned i, channel;
2233 FLAC__ASSERT(new_blocksize > 0);
2234 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2235 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2237 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2238 if(new_blocksize <= encoder->private_->input_capacity)
2243 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2244 * requires that the input arrays (in our case the integer signals)
2245 * have a buffer of up to 3 zeroes in front (at negative indices) for
2246 * alignment purposes; we use 4 in front to keep the data well-aligned.
2249 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2250 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2251 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2252 encoder->private_->integer_signal[i] += 4;
2253 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2254 #if 0 /* @@@ currently unused */
2255 if(encoder->protected_->max_lpc_order > 0)
2256 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2260 for(i = 0; ok && i < 2; i++) {
2261 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]);
2262 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2263 encoder->private_->integer_signal_mid_side[i] += 4;
2264 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2265 #if 0 /* @@@ currently unused */
2266 if(encoder->protected_->max_lpc_order > 0)
2267 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]);
2271 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2272 if(ok && encoder->protected_->max_lpc_order > 0) {
2273 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2274 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2275 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2278 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2279 for(i = 0; ok && i < 2; i++) {
2280 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2283 for(channel = 0; ok && channel < 2; channel++) {
2284 for(i = 0; ok && i < 2; i++) {
2285 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]);
2288 /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */
2289 /*@@@ new_blocksize*2 is too pessimistic, but to fix, we need smarter logic because a smaller new_blocksize can actually increase the # of partitions; would require moving this out into a separate function, then checking its capacity against the need of the current blocksize&min/max_partition_order (and maybe predictor order) */
2290 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2291 if(encoder->protected_->do_escape_coding)
2292 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2294 /* now adjust the windows if the blocksize has changed */
2295 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2296 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2297 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2298 switch(encoder->protected_->apodizations[i].type) {
2299 case FLAC__APODIZATION_BARTLETT:
2300 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2302 case FLAC__APODIZATION_BARTLETT_HANN:
2303 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2305 case FLAC__APODIZATION_BLACKMAN:
2306 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2308 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2309 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2311 case FLAC__APODIZATION_CONNES:
2312 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2314 case FLAC__APODIZATION_FLATTOP:
2315 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2317 case FLAC__APODIZATION_GAUSS:
2318 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2320 case FLAC__APODIZATION_HAMMING:
2321 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2323 case FLAC__APODIZATION_HANN:
2324 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2326 case FLAC__APODIZATION_KAISER_BESSEL:
2327 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2329 case FLAC__APODIZATION_NUTTALL:
2330 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2332 case FLAC__APODIZATION_RECTANGLE:
2333 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2335 case FLAC__APODIZATION_TRIANGLE:
2336 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2338 case FLAC__APODIZATION_TUKEY:
2339 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2341 case FLAC__APODIZATION_WELCH:
2342 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2346 /* double protection */
2347 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2355 encoder->private_->input_capacity = new_blocksize;
2357 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2362 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2364 const FLAC__byte *buffer;
2367 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2369 if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
2370 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2374 if(encoder->protected_->verify) {
2375 encoder->private_->verify.output.data = buffer;
2376 encoder->private_->verify.output.bytes = bytes;
2377 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2378 encoder->private_->verify.needs_magic_hack = true;
2381 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2382 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2383 FLAC__bitwriter_clear(encoder->private_->frame);
2384 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2385 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2391 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2392 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2393 FLAC__bitwriter_clear(encoder->private_->frame);
2394 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2398 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2399 FLAC__bitwriter_clear(encoder->private_->frame);
2402 encoder->private_->streaminfo.data.stream_info.min_framesize = flac_min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2403 encoder->private_->streaminfo.data.stream_info.max_framesize = flac_max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2409 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2411 FLAC__StreamEncoderWriteStatus status;
2412 FLAC__uint64 output_position = 0;
2414 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2415 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2416 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2417 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2421 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2424 FLAC__MetadataType type = (buffer[0] & 0x7f);
2425 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2426 encoder->protected_->streaminfo_offset = output_position;
2427 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2428 encoder->protected_->seektable_offset = output_position;
2432 * Mark the current seek point if hit (if audio_offset == 0 that
2433 * means we're still writing metadata and haven't hit the first
2436 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2437 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2438 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2439 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2440 FLAC__uint64 test_sample;
2442 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2443 test_sample = encoder->private_->seek_table->points[i].sample_number;
2444 if(test_sample > frame_last_sample) {
2447 else if(test_sample >= frame_first_sample) {
2448 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2449 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2450 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2451 encoder->private_->first_seekpoint_to_check++;
2452 /* DO NOT: "break;" and here's why:
2453 * The seektable template may contain more than one target
2454 * sample for any given frame; we will keep looping, generating
2455 * duplicate seekpoints for them, and we'll clean it up later,
2456 * just before writing the seektable back to the metadata.
2460 encoder->private_->first_seekpoint_to_check++;
2466 if(encoder->private_->is_ogg) {
2467 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2468 &encoder->protected_->ogg_encoder_aspect,
2472 encoder->private_->current_frame_number,
2474 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2476 encoder->private_->client_data
2481 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2483 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2484 encoder->private_->bytes_written += bytes;
2485 encoder->private_->samples_written += samples;
2486 /* we keep a high watermark on the number of frames written because
2487 * when the encoder goes back to write metadata, 'current_frame'
2488 * will drop back to 0.
2490 encoder->private_->frames_written = flac_max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2493 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2498 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2499 void update_metadata_(const FLAC__StreamEncoder *encoder)
2501 FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2502 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2503 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2504 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2505 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2506 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2507 FLAC__StreamEncoderSeekStatus seek_status;
2509 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2511 /* All this is based on intimate knowledge of the stream header
2512 * layout, but a change to the header format that would break this
2513 * would also break all streams encoded in the previous format.
2517 * Write MD5 signature
2520 const unsigned md5_offset =
2521 FLAC__STREAM_METADATA_HEADER_LENGTH +
2523 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2524 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2525 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2526 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2527 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2528 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2529 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2530 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2533 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2534 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2535 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2538 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2539 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2545 * Write total samples
2548 const unsigned total_samples_byte_offset =
2549 FLAC__STREAM_METADATA_HEADER_LENGTH +
2551 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2552 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2553 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2554 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2555 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2556 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2557 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2561 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2562 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2563 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2564 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2565 b[4] = (FLAC__byte)(samples & 0xFF);
2566 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) {
2567 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2568 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2571 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2572 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2578 * Write min/max framesize
2581 const unsigned min_framesize_offset =
2582 FLAC__STREAM_METADATA_HEADER_LENGTH +
2584 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2585 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2588 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2589 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2590 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2591 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2592 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2593 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2594 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) {
2595 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2596 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2599 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2600 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2608 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2611 FLAC__format_seektable_sort(encoder->private_->seek_table);
2613 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2615 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) {
2616 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2617 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2621 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2624 xx = encoder->private_->seek_table->points[i].sample_number;
2625 b[7] = (FLAC__byte)xx; xx >>= 8;
2626 b[6] = (FLAC__byte)xx; xx >>= 8;
2627 b[5] = (FLAC__byte)xx; xx >>= 8;
2628 b[4] = (FLAC__byte)xx; xx >>= 8;
2629 b[3] = (FLAC__byte)xx; xx >>= 8;
2630 b[2] = (FLAC__byte)xx; xx >>= 8;
2631 b[1] = (FLAC__byte)xx; xx >>= 8;
2632 b[0] = (FLAC__byte)xx; xx >>= 8;
2633 xx = encoder->private_->seek_table->points[i].stream_offset;
2634 b[15] = (FLAC__byte)xx; xx >>= 8;
2635 b[14] = (FLAC__byte)xx; xx >>= 8;
2636 b[13] = (FLAC__byte)xx; xx >>= 8;
2637 b[12] = (FLAC__byte)xx; xx >>= 8;
2638 b[11] = (FLAC__byte)xx; xx >>= 8;
2639 b[10] = (FLAC__byte)xx; xx >>= 8;
2640 b[9] = (FLAC__byte)xx; xx >>= 8;
2641 b[8] = (FLAC__byte)xx; xx >>= 8;
2642 x = encoder->private_->seek_table->points[i].frame_samples;
2643 b[17] = (FLAC__byte)x; x >>= 8;
2644 b[16] = (FLAC__byte)x; x >>= 8;
2645 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2646 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2654 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2655 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2657 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2658 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2659 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2660 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2661 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2662 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2663 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2664 FLAC__STREAM_SYNC_LENGTH
2666 FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2667 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2668 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2669 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2670 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2673 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2674 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2676 /* Pre-check that client supports seeking, since we don't want the
2677 * ogg_helper code to ever have to deal with this condition.
2679 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2682 /* All this is based on intimate knowledge of the stream header
2683 * layout, but a change to the header format that would break this
2684 * would also break all streams encoded in the previous format.
2688 ** Write STREAMINFO stats
2690 simple_ogg_page__init(&page);
2691 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2692 simple_ogg_page__clear(&page);
2693 return; /* state already set */
2697 * Write MD5 signature
2700 const unsigned md5_offset =
2701 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2702 FLAC__STREAM_METADATA_HEADER_LENGTH +
2704 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2705 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2706 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2707 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2708 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2709 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2710 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2711 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2714 if(md5_offset + 16 > (unsigned)page.body_len) {
2715 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2716 simple_ogg_page__clear(&page);
2719 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2723 * Write total samples
2726 const unsigned total_samples_byte_offset =
2727 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2728 FLAC__STREAM_METADATA_HEADER_LENGTH +
2730 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2731 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2732 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2733 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2734 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2735 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2736 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2740 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2741 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2742 simple_ogg_page__clear(&page);
2745 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2746 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2747 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2748 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2749 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2750 b[4] = (FLAC__byte)(samples & 0xFF);
2751 memcpy(page.body + total_samples_byte_offset, b, 5);
2755 * Write min/max framesize
2758 const unsigned min_framesize_offset =
2759 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2760 FLAC__STREAM_METADATA_HEADER_LENGTH +
2762 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2763 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2766 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
2767 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2768 simple_ogg_page__clear(&page);
2771 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2772 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2773 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2774 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2775 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2776 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2777 memcpy(page.body + min_framesize_offset, b, 6);
2779 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2780 simple_ogg_page__clear(&page);
2781 return; /* state already set */
2783 simple_ogg_page__clear(&page);
2788 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2792 FLAC__format_seektable_sort(encoder->private_->seek_table);
2794 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2796 simple_ogg_page__init(&page);
2797 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2798 simple_ogg_page__clear(&page);
2799 return; /* state already set */
2802 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
2803 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2804 simple_ogg_page__clear(&page);
2808 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
2811 xx = encoder->private_->seek_table->points[i].sample_number;
2812 b[7] = (FLAC__byte)xx; xx >>= 8;
2813 b[6] = (FLAC__byte)xx; xx >>= 8;
2814 b[5] = (FLAC__byte)xx; xx >>= 8;
2815 b[4] = (FLAC__byte)xx; xx >>= 8;
2816 b[3] = (FLAC__byte)xx; xx >>= 8;
2817 b[2] = (FLAC__byte)xx; xx >>= 8;
2818 b[1] = (FLAC__byte)xx; xx >>= 8;
2819 b[0] = (FLAC__byte)xx; xx >>= 8;
2820 xx = encoder->private_->seek_table->points[i].stream_offset;
2821 b[15] = (FLAC__byte)xx; xx >>= 8;
2822 b[14] = (FLAC__byte)xx; xx >>= 8;
2823 b[13] = (FLAC__byte)xx; xx >>= 8;
2824 b[12] = (FLAC__byte)xx; xx >>= 8;
2825 b[11] = (FLAC__byte)xx; xx >>= 8;
2826 b[10] = (FLAC__byte)xx; xx >>= 8;
2827 b[9] = (FLAC__byte)xx; xx >>= 8;
2828 b[8] = (FLAC__byte)xx; xx >>= 8;
2829 x = encoder->private_->seek_table->points[i].frame_samples;
2830 b[17] = (FLAC__byte)x; x >>= 8;
2831 b[16] = (FLAC__byte)x; x >>= 8;
2835 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2836 simple_ogg_page__clear(&page);
2837 return; /* state already set */
2839 simple_ogg_page__clear(&page);
2844 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
2847 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2850 * Accumulate raw signal to the MD5 signature
2852 if(encoder->protected_->do_md5 && !FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) {
2853 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2858 * Process the frame header and subframes into the frame bitbuffer
2860 if(!process_subframes_(encoder, is_fractional_block)) {
2861 /* the above function sets the state for us in case of an error */
2866 * Zero-pad the frame to a byte_boundary
2868 if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
2869 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2874 * CRC-16 the whole thing
2876 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2878 !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
2879 !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
2881 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2888 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
2889 /* the above function sets the state for us in case of an error */
2894 * Get ready for the next frame
2896 encoder->private_->current_sample_number = 0;
2897 encoder->private_->current_frame_number++;
2898 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
2903 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
2905 FLAC__FrameHeader frame_header;
2906 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
2907 FLAC__bool do_independent, do_mid_side;
2910 * Calculate the min,max Rice partition orders
2912 if(is_fractional_block) {
2913 max_partition_order = 0;
2916 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
2917 max_partition_order = flac_min(max_partition_order, encoder->protected_->max_residual_partition_order);
2919 min_partition_order = flac_min(min_partition_order, max_partition_order);
2924 frame_header.blocksize = encoder->protected_->blocksize;
2925 frame_header.sample_rate = encoder->protected_->sample_rate;
2926 frame_header.channels = encoder->protected_->channels;
2927 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
2928 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
2929 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
2930 frame_header.number.frame_number = encoder->private_->current_frame_number;
2933 * Figure out what channel assignments to try
2935 if(encoder->protected_->do_mid_side_stereo) {
2936 if(encoder->protected_->loose_mid_side_stereo) {
2937 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
2938 do_independent = true;
2942 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
2943 do_mid_side = !do_independent;
2947 do_independent = true;
2952 do_independent = true;
2953 do_mid_side = false;
2956 FLAC__ASSERT(do_independent || do_mid_side);
2959 * Check for wasted bits; set effective bps for each subframe
2961 if(do_independent) {
2962 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2963 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
2964 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
2965 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
2969 FLAC__ASSERT(encoder->protected_->channels == 2);
2970 for(channel = 0; channel < 2; channel++) {
2971 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
2972 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
2973 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
2978 * First do a normal encoding pass of each independent channel
2980 if(do_independent) {
2981 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2985 min_partition_order,
2986 max_partition_order,
2988 encoder->private_->subframe_bps[channel],
2989 encoder->private_->integer_signal[channel],
2990 encoder->private_->subframe_workspace_ptr[channel],
2991 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
2992 encoder->private_->residual_workspace[channel],
2993 encoder->private_->best_subframe+channel,
2994 encoder->private_->best_subframe_bits+channel
3002 * Now do mid and side channels if requested
3005 FLAC__ASSERT(encoder->protected_->channels == 2);
3007 for(channel = 0; channel < 2; channel++) {
3011 min_partition_order,
3012 max_partition_order,
3014 encoder->private_->subframe_bps_mid_side[channel],
3015 encoder->private_->integer_signal_mid_side[channel],
3016 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3017 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3018 encoder->private_->residual_workspace_mid_side[channel],
3019 encoder->private_->best_subframe_mid_side+channel,
3020 encoder->private_->best_subframe_bits_mid_side+channel
3028 * Compose the frame bitbuffer
3031 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3032 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3033 FLAC__ChannelAssignment channel_assignment;
3035 FLAC__ASSERT(encoder->protected_->channels == 2);
3037 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3038 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3041 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3045 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
3046 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
3047 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
3048 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
3049 FLAC__ASSERT(do_independent && do_mid_side);
3051 /* We have to figure out which channel assignent results in the smallest frame */
3052 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3053 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3054 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3055 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3057 channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
3058 min_bits = bits[channel_assignment];
3059 for(ca = 1; ca <= 3; ca++) {
3060 if(bits[ca] < min_bits) {
3061 min_bits = bits[ca];
3062 channel_assignment = (FLAC__ChannelAssignment)ca;
3067 frame_header.channel_assignment = channel_assignment;
3069 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3070 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3074 switch(channel_assignment) {
3075 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3076 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3077 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3079 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3080 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3081 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3083 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3084 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3085 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3087 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3088 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3089 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3095 switch(channel_assignment) {
3096 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3097 left_bps = encoder->private_->subframe_bps [0];
3098 right_bps = encoder->private_->subframe_bps [1];
3100 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3101 left_bps = encoder->private_->subframe_bps [0];
3102 right_bps = encoder->private_->subframe_bps_mid_side[1];
3104 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3105 left_bps = encoder->private_->subframe_bps_mid_side[1];
3106 right_bps = encoder->private_->subframe_bps [1];
3108 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3109 left_bps = encoder->private_->subframe_bps_mid_side[0];
3110 right_bps = encoder->private_->subframe_bps_mid_side[1];
3116 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3117 if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
3119 if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
3123 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3124 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3128 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3129 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)) {
3130 /* the above function sets the state for us in case of an error */
3136 if(encoder->protected_->loose_mid_side_stereo) {
3137 encoder->private_->loose_mid_side_stereo_frame_count++;
3138 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3139 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3142 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3147 FLAC__bool process_subframe_(
3148 FLAC__StreamEncoder *encoder,
3149 unsigned min_partition_order,
3150 unsigned max_partition_order,
3151 const FLAC__FrameHeader *frame_header,
3152 unsigned subframe_bps,
3153 const FLAC__int32 integer_signal[],
3154 FLAC__Subframe *subframe[2],
3155 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3156 FLAC__int32 *residual[2],
3157 unsigned *best_subframe,
3161 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3162 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3164 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3166 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3167 FLAC__double lpc_residual_bits_per_sample;
3168 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 */
3169 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3170 unsigned min_lpc_order, max_lpc_order, lpc_order;
3171 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3173 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3174 unsigned rice_parameter;
3175 unsigned _candidate_bits, _best_bits;
3176 unsigned _best_subframe;
3177 /* only use RICE2 partitions if stream bps > 16 */
3178 const unsigned rice_parameter_limit = FLAC__stream_encoder_get_bits_per_sample(encoder) > 16? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
3180 FLAC__ASSERT(frame_header->blocksize > 0);
3182 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3184 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3185 _best_bits = UINT_MAX;
3187 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3189 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3190 unsigned signal_is_constant = false;
3191 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);
3192 /* check for constant subframe */
3194 !encoder->private_->disable_constant_subframes &&
3195 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3196 fixed_residual_bits_per_sample[1] == 0.0
3198 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3201 /* the above means it's possible all samples are the same value; now double-check it: */
3203 signal_is_constant = true;
3204 for(i = 1; i < frame_header->blocksize; i++) {
3205 if(integer_signal[0] != integer_signal[i]) {
3206 signal_is_constant = false;
3211 if(signal_is_constant) {
3212 _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
3213 if(_candidate_bits < _best_bits) {
3214 _best_subframe = !_best_subframe;
3215 _best_bits = _candidate_bits;
3219 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3221 if(encoder->protected_->do_exhaustive_model_search) {
3222 min_fixed_order = 0;
3223 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3226 min_fixed_order = max_fixed_order = guess_fixed_order;
3228 if(max_fixed_order >= frame_header->blocksize)
3229 max_fixed_order = frame_header->blocksize - 1;
3230 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3231 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3232 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3233 continue; /* don't even try */
3234 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 */
3236 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3237 continue; /* don't even try */
3238 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 */
3240 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3241 if(rice_parameter >= rice_parameter_limit) {
3242 #ifdef DEBUG_VERBOSE
3243 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, rice_parameter_limit - 1);
3245 rice_parameter = rice_parameter_limit - 1;
3248 evaluate_fixed_subframe_(
3251 residual[!_best_subframe],
3252 encoder->private_->abs_residual_partition_sums,
3253 encoder->private_->raw_bits_per_partition,
3254 frame_header->blocksize,
3258 rice_parameter_limit,
3259 min_partition_order,
3260 max_partition_order,
3261 encoder->protected_->do_escape_coding,
3262 encoder->protected_->rice_parameter_search_dist,
3263 subframe[!_best_subframe],
3264 partitioned_rice_contents[!_best_subframe]
3266 if(_candidate_bits < _best_bits) {
3267 _best_subframe = !_best_subframe;
3268 _best_bits = _candidate_bits;
3273 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3275 if(encoder->protected_->max_lpc_order > 0) {
3276 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3277 max_lpc_order = frame_header->blocksize-1;
3279 max_lpc_order = encoder->protected_->max_lpc_order;
3280 if(max_lpc_order > 0) {
3282 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3283 FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3284 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3285 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3286 if(autoc[0] != 0.0) {
3287 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3288 if(encoder->protected_->do_exhaustive_model_search) {
3292 const unsigned guess_lpc_order =
3293 FLAC__lpc_compute_best_order(
3296 frame_header->blocksize,
3298 encoder->protected_->do_qlp_coeff_prec_search?
3299 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3300 encoder->protected_->qlp_coeff_precision
3303 min_lpc_order = max_lpc_order = guess_lpc_order;
3305 if(max_lpc_order >= frame_header->blocksize)
3306 max_lpc_order = frame_header->blocksize - 1;
3307 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3308 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3309 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3310 continue; /* don't even try */
3311 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3312 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3313 if(rice_parameter >= rice_parameter_limit) {
3314 #ifdef DEBUG_VERBOSE
3315 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, rice_parameter_limit - 1);
3317 rice_parameter = rice_parameter_limit - 1;
3319 if(encoder->protected_->do_qlp_coeff_prec_search) {
3320 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3321 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3322 if(subframe_bps <= 17) {
3323 max_qlp_coeff_precision = flac_min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3324 max_qlp_coeff_precision = flac_max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3327 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3330 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3332 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3334 evaluate_lpc_subframe_(
3337 residual[!_best_subframe],
3338 encoder->private_->abs_residual_partition_sums,
3339 encoder->private_->raw_bits_per_partition,
3340 encoder->private_->lp_coeff[lpc_order-1],
3341 frame_header->blocksize,
3344 qlp_coeff_precision,
3346 rice_parameter_limit,
3347 min_partition_order,
3348 max_partition_order,
3349 encoder->protected_->do_escape_coding,
3350 encoder->protected_->rice_parameter_search_dist,
3351 subframe[!_best_subframe],
3352 partitioned_rice_contents[!_best_subframe]
3354 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3355 if(_candidate_bits < _best_bits) {
3356 _best_subframe = !_best_subframe;
3357 _best_bits = _candidate_bits;
3366 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3370 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3371 if(_best_bits == UINT_MAX) {
3372 FLAC__ASSERT(_best_subframe == 0);
3373 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3376 *best_subframe = _best_subframe;
3377 *best_bits = _best_bits;
3382 FLAC__bool add_subframe_(
3383 FLAC__StreamEncoder *encoder,
3385 unsigned subframe_bps,
3386 const FLAC__Subframe *subframe,
3387 FLAC__BitWriter *frame
3390 switch(subframe->type) {
3391 case FLAC__SUBFRAME_TYPE_CONSTANT:
3392 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3393 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3397 case FLAC__SUBFRAME_TYPE_FIXED:
3398 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3399 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3403 case FLAC__SUBFRAME_TYPE_LPC:
3404 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3405 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3409 case FLAC__SUBFRAME_TYPE_VERBATIM:
3410 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3411 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3422 #define SPOTCHECK_ESTIMATE 0
3423 #if SPOTCHECK_ESTIMATE
3424 static void spotcheck_subframe_estimate_(
3425 FLAC__StreamEncoder *encoder,
3427 unsigned subframe_bps,
3428 const FLAC__Subframe *subframe,
3433 FLAC__BitWriter *frame = FLAC__bitwriter_new();
3435 fprintf(stderr, "EST: can't allocate frame\n");
3438 if(!FLAC__bitwriter_init(frame)) {
3439 fprintf(stderr, "EST: can't init frame\n");
3442 ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
3445 const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
3446 if(estimate != actual)
3447 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);
3449 FLAC__bitwriter_delete(frame);
3453 unsigned evaluate_constant_subframe_(
3454 FLAC__StreamEncoder *encoder,
3455 const FLAC__int32 signal,
3457 unsigned subframe_bps,
3458 FLAC__Subframe *subframe
3462 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3463 subframe->data.constant.value = signal;
3465 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
3467 #if SPOTCHECK_ESTIMATE
3468 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3470 (void)encoder, (void)blocksize;
3476 unsigned evaluate_fixed_subframe_(
3477 FLAC__StreamEncoder *encoder,
3478 const FLAC__int32 signal[],
3479 FLAC__int32 residual[],
3480 FLAC__uint64 abs_residual_partition_sums[],
3481 unsigned raw_bits_per_partition[],
3483 unsigned subframe_bps,
3485 unsigned rice_parameter,
3486 unsigned rice_parameter_limit,
3487 unsigned min_partition_order,
3488 unsigned max_partition_order,
3489 FLAC__bool do_escape_coding,
3490 unsigned rice_parameter_search_dist,
3491 FLAC__Subframe *subframe,
3492 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3495 unsigned i, residual_bits, estimate;
3496 const unsigned residual_samples = blocksize - order;
3498 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3500 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3502 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3503 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3504 subframe->data.fixed.residual = residual;
3507 find_best_partition_order_(
3510 abs_residual_partition_sums,
3511 raw_bits_per_partition,
3515 rice_parameter_limit,
3516 min_partition_order,
3517 max_partition_order,
3520 rice_parameter_search_dist,
3521 &subframe->data.fixed.entropy_coding_method
3524 subframe->data.fixed.order = order;
3525 for(i = 0; i < order; i++)
3526 subframe->data.fixed.warmup[i] = signal[i];
3528 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
3530 #if SPOTCHECK_ESTIMATE
3531 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3537 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3538 unsigned evaluate_lpc_subframe_(
3539 FLAC__StreamEncoder *encoder,
3540 const FLAC__int32 signal[],
3541 FLAC__int32 residual[],
3542 FLAC__uint64 abs_residual_partition_sums[],
3543 unsigned raw_bits_per_partition[],
3544 const FLAC__real lp_coeff[],
3546 unsigned subframe_bps,
3548 unsigned qlp_coeff_precision,
3549 unsigned rice_parameter,
3550 unsigned rice_parameter_limit,
3551 unsigned min_partition_order,
3552 unsigned max_partition_order,
3553 FLAC__bool do_escape_coding,
3554 unsigned rice_parameter_search_dist,
3555 FLAC__Subframe *subframe,
3556 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3559 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3560 unsigned i, residual_bits, estimate;
3561 int quantization, ret;
3562 const unsigned residual_samples = blocksize - order;
3564 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3565 if(subframe_bps <= 16) {
3566 FLAC__ASSERT(order > 0);
3567 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3568 qlp_coeff_precision = flac_min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3571 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3573 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3575 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3576 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3577 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3579 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3581 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3583 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3585 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3586 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3587 subframe->data.lpc.residual = residual;
3590 find_best_partition_order_(
3593 abs_residual_partition_sums,
3594 raw_bits_per_partition,
3598 rice_parameter_limit,
3599 min_partition_order,
3600 max_partition_order,
3603 rice_parameter_search_dist,
3604 &subframe->data.lpc.entropy_coding_method
3607 subframe->data.lpc.order = order;
3608 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3609 subframe->data.lpc.quantization_level = quantization;
3610 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3611 for(i = 0; i < order; i++)
3612 subframe->data.lpc.warmup[i] = signal[i];
3614 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;
3616 #if SPOTCHECK_ESTIMATE
3617 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3624 unsigned evaluate_verbatim_subframe_(
3625 FLAC__StreamEncoder *encoder,
3626 const FLAC__int32 signal[],
3628 unsigned subframe_bps,
3629 FLAC__Subframe *subframe
3634 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3636 subframe->data.verbatim.data = signal;
3638 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
3640 #if SPOTCHECK_ESTIMATE
3641 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3649 unsigned find_best_partition_order_(
3650 FLAC__StreamEncoderPrivate *private_,
3651 const FLAC__int32 residual[],
3652 FLAC__uint64 abs_residual_partition_sums[],
3653 unsigned raw_bits_per_partition[],
3654 unsigned residual_samples,
3655 unsigned predictor_order,
3656 unsigned rice_parameter,
3657 unsigned rice_parameter_limit,
3658 unsigned min_partition_order,
3659 unsigned max_partition_order,
3661 FLAC__bool do_escape_coding,
3662 unsigned rice_parameter_search_dist,
3663 FLAC__EntropyCodingMethod *best_ecm
3666 unsigned residual_bits, best_residual_bits = 0;
3667 unsigned best_parameters_index = 0;
3668 unsigned best_partition_order = 0;
3669 const unsigned blocksize = residual_samples + predictor_order;
3671 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3672 min_partition_order = flac_min(min_partition_order, max_partition_order);
3674 precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps);
3676 if(do_escape_coding)
3677 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3680 int partition_order;
3683 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3685 set_partitioned_rice_(
3686 #ifdef EXACT_RICE_BITS_CALCULATION
3689 abs_residual_partition_sums+sum,
3690 raw_bits_per_partition+sum,
3694 rice_parameter_limit,
3695 rice_parameter_search_dist,
3696 (unsigned)partition_order,
3698 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3703 FLAC__ASSERT(best_residual_bits != 0);
3706 sum += 1u << partition_order;
3707 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3708 best_residual_bits = residual_bits;
3709 best_parameters_index = !best_parameters_index;
3710 best_partition_order = partition_order;
3715 best_ecm->data.partitioned_rice.order = best_partition_order;
3719 * We are allowed to de-const the pointer based on our special
3720 * knowledge; it is const to the outside world.
3722 FLAC__EntropyCodingMethod_PartitionedRiceContents* prc = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_ecm->data.partitioned_rice.contents;
3725 /* save best parameters and raw_bits */
3726 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(prc, flac_max(6u, best_partition_order));
3727 memcpy(prc->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partition_order)));
3728 if(do_escape_coding)
3729 memcpy(prc->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partition_order)));
3731 * Now need to check if the type should be changed to
3732 * FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 based on the
3733 * size of the rice parameters.
3735 for(partition = 0; partition < (1u<<best_partition_order); partition++) {
3736 if(prc->parameters[partition] >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3737 best_ecm->type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2;
3743 return best_residual_bits;
3746 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3747 extern void precompute_partition_info_sums_32bit_asm_ia32_(
3748 const FLAC__int32 residual[],
3749 FLAC__uint64 abs_residual_partition_sums[],
3751 unsigned predictor_order,
3752 unsigned min_partition_order,
3753 unsigned max_partition_order
3757 void precompute_partition_info_sums_(
3758 const FLAC__int32 residual[],
3759 FLAC__uint64 abs_residual_partition_sums[],
3760 unsigned residual_samples,
3761 unsigned predictor_order,
3762 unsigned min_partition_order,
3763 unsigned max_partition_order,
3767 const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order;
3768 unsigned partitions = 1u << max_partition_order;
3770 FLAC__ASSERT(default_partition_samples > predictor_order);
3772 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3773 /* slightly pessimistic but still catches all common cases */
3774 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3775 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3776 precompute_partition_info_sums_32bit_asm_ia32_(residual, abs_residual_partition_sums, residual_samples + predictor_order, predictor_order, min_partition_order, max_partition_order);
3781 /* first do max_partition_order */
3783 unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order);
3784 /* slightly pessimistic but still catches all common cases */
3785 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3786 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3787 FLAC__uint32 abs_residual_partition_sum;
3789 for(partition = residual_sample = 0; partition < partitions; partition++) {
3790 end += default_partition_samples;
3791 abs_residual_partition_sum = 0;
3792 for( ; residual_sample < end; residual_sample++)
3793 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3794 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3797 else { /* have to pessimistically use 64 bits for accumulator */
3798 FLAC__uint64 abs_residual_partition_sum;
3800 for(partition = residual_sample = 0; partition < partitions; partition++) {
3801 end += default_partition_samples;
3802 abs_residual_partition_sum = 0;
3803 for( ; residual_sample < end; residual_sample++)
3804 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3805 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3810 /* now merge partitions for lower orders */
3812 unsigned from_partition = 0, to_partition = partitions;
3813 int partition_order;
3814 for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) {
3817 for(i = 0; i < partitions; i++) {
3818 abs_residual_partition_sums[to_partition++] =
3819 abs_residual_partition_sums[from_partition ] +
3820 abs_residual_partition_sums[from_partition+1];
3821 from_partition += 2;
3827 void precompute_partition_info_escapes_(
3828 const FLAC__int32 residual[],
3829 unsigned raw_bits_per_partition[],
3830 unsigned residual_samples,
3831 unsigned predictor_order,
3832 unsigned min_partition_order,
3833 unsigned max_partition_order
3836 int partition_order;
3837 unsigned from_partition, to_partition = 0;
3838 const unsigned blocksize = residual_samples + predictor_order;
3840 /* first do max_partition_order */
3841 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3844 unsigned partition, partition_sample, partition_samples, residual_sample;
3845 const unsigned partitions = 1u << partition_order;
3846 const unsigned default_partition_samples = blocksize >> partition_order;
3848 FLAC__ASSERT(default_partition_samples > predictor_order);
3850 for(partition = residual_sample = 0; partition < partitions; partition++) {
3851 partition_samples = default_partition_samples;
3853 partition_samples -= predictor_order;
3855 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3856 r = residual[residual_sample++];
3857 /* OPT: maybe faster: rmax |= r ^ (r>>31) */
3863 /* now we know all residual values are in the range [-rmax-1,rmax] */
3864 raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1;
3866 to_partition = partitions;
3867 break; /*@@@ yuck, should remove the 'for' loop instead */
3870 /* now merge partitions for lower orders */
3871 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3874 const unsigned partitions = 1u << partition_order;
3875 for(i = 0; i < partitions; i++) {
3876 m = raw_bits_per_partition[from_partition];
3878 raw_bits_per_partition[to_partition] = flac_max(m, raw_bits_per_partition[from_partition]);
3885 #ifdef EXACT_RICE_BITS_CALCULATION
3886 static inline unsigned count_rice_bits_in_partition_(
3887 const unsigned rice_parameter,
3888 const unsigned partition_samples,
3889 const FLAC__int32 *residual
3892 unsigned i, partition_bits =
3893 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */
3894 (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
3896 for(i = 0; i < partition_samples; i++)
3897 partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
3898 return partition_bits;
3901 static inline unsigned count_rice_bits_in_partition_(
3902 const unsigned rice_parameter,
3903 const unsigned partition_samples,
3904 const FLAC__uint64 abs_residual_partition_sum
3908 FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */
3909 (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
3912 (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
3913 : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
3915 - (partition_samples >> 1)
3916 /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
3917 * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1)
3918 * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
3919 * So the subtraction term tries to guess how many extra bits were contributed.
3920 * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
3926 FLAC__bool set_partitioned_rice_(
3927 #ifdef EXACT_RICE_BITS_CALCULATION
3928 const FLAC__int32 residual[],
3930 const FLAC__uint64 abs_residual_partition_sums[],
3931 const unsigned raw_bits_per_partition[],
3932 const unsigned residual_samples,
3933 const unsigned predictor_order,
3934 const unsigned suggested_rice_parameter,
3935 const unsigned rice_parameter_limit,
3936 const unsigned rice_parameter_search_dist,
3937 const unsigned partition_order,
3938 const FLAC__bool search_for_escapes,
3939 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3943 unsigned rice_parameter, partition_bits;
3944 unsigned best_partition_bits, best_rice_parameter = 0;
3945 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3946 unsigned *parameters, *raw_bits;
3947 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3948 unsigned min_rice_parameter, max_rice_parameter;
3950 (void)rice_parameter_search_dist;
3953 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
3954 FLAC__ASSERT(rice_parameter_limit <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
3956 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, flac_max(6u, partition_order));
3957 parameters = partitioned_rice_contents->parameters;
3958 raw_bits = partitioned_rice_contents->raw_bits;
3960 if(partition_order == 0) {
3961 best_partition_bits = (unsigned)(-1);
3962 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3963 if(rice_parameter_search_dist) {
3964 if(suggested_rice_parameter < rice_parameter_search_dist)
3965 min_rice_parameter = 0;
3967 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
3968 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
3969 if(max_rice_parameter >= rice_parameter_limit) {
3970 #ifdef DEBUG_VERBOSE
3971 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, rice_parameter_limit - 1);
3973 max_rice_parameter = rice_parameter_limit - 1;
3977 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
3979 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3981 rice_parameter = suggested_rice_parameter;
3983 #ifdef EXACT_RICE_BITS_CALCULATION
3984 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual);
3986 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]);
3988 if(partition_bits < best_partition_bits) {
3989 best_rice_parameter = rice_parameter;
3990 best_partition_bits = partition_bits;
3992 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3995 if(search_for_escapes) {
3996 partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
3997 if(partition_bits <= best_partition_bits) {
3998 raw_bits[0] = raw_bits_per_partition[0];
3999 best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
4000 best_partition_bits = partition_bits;
4005 parameters[0] = best_rice_parameter;
4006 bits_ += best_partition_bits;
4009 unsigned partition, residual_sample;
4010 unsigned partition_samples;
4011 FLAC__uint64 mean, k;
4012 const unsigned partitions = 1u << partition_order;
4013 for(partition = residual_sample = 0; partition < partitions; partition++) {
4014 partition_samples = (residual_samples+predictor_order) >> partition_order;
4015 if(partition == 0) {
4016 if(partition_samples <= predictor_order)
4019 partition_samples -= predictor_order;
4021 mean = abs_residual_partition_sums[partition];
4022 /* we are basically calculating the size in bits of the
4023 * average residual magnitude in the partition:
4024 * rice_parameter = floor(log2(mean/partition_samples))
4025 * 'mean' is not a good name for the variable, it is
4026 * actually the sum of magnitudes of all residual values
4027 * in the partition, so the actual mean is
4028 * mean/partition_samples
4030 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4032 if(rice_parameter >= rice_parameter_limit) {
4033 #ifdef DEBUG_VERBOSE
4034 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, rice_parameter_limit - 1);
4036 rice_parameter = rice_parameter_limit - 1;
4039 best_partition_bits = (unsigned)(-1);
4040 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4041 if(rice_parameter_search_dist) {
4042 if(rice_parameter < rice_parameter_search_dist)
4043 min_rice_parameter = 0;
4045 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4046 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4047 if(max_rice_parameter >= rice_parameter_limit) {
4048 #ifdef DEBUG_VERBOSE
4049 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, rice_parameter_limit - 1);
4051 max_rice_parameter = rice_parameter_limit - 1;
4055 min_rice_parameter = max_rice_parameter = rice_parameter;
4057 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4059 #ifdef EXACT_RICE_BITS_CALCULATION
4060 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample);
4062 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]);
4064 if(partition_bits < best_partition_bits) {
4065 best_rice_parameter = rice_parameter;
4066 best_partition_bits = partition_bits;
4068 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4071 if(search_for_escapes) {
4072 partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
4073 if(partition_bits <= best_partition_bits) {
4074 raw_bits[partition] = raw_bits_per_partition[partition];
4075 best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
4076 best_partition_bits = partition_bits;
4079 raw_bits[partition] = 0;
4081 parameters[partition] = best_rice_parameter;
4082 bits_ += best_partition_bits;
4083 residual_sample += partition_samples;
4091 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4096 for(i = 0; i < samples && !(x&1); i++)
4103 for(shift = 0; !(x&1); shift++)
4108 for(i = 0; i < samples; i++)
4109 signal[i] >>= shift;
4115 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4119 for(channel = 0; channel < channels; channel++)
4120 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4122 fifo->tail += wide_samples;
4124 FLAC__ASSERT(fifo->tail <= fifo->size);
4127 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4130 unsigned sample, wide_sample;
4131 unsigned tail = fifo->tail;
4133 sample = input_offset * channels;
4134 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4135 for(channel = 0; channel < channels; channel++)
4136 fifo->data[channel][tail] = input[sample++];
4141 FLAC__ASSERT(fifo->tail <= fifo->size);
4144 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4146 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4147 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4150 if(encoder->private_->verify.needs_magic_hack) {
4151 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4152 *bytes = FLAC__STREAM_SYNC_LENGTH;
4153 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4154 encoder->private_->verify.needs_magic_hack = false;
4157 if(encoded_bytes == 0) {
4159 * If we get here, a FIFO underflow has occurred,
4160 * which means there is a bug somewhere.
4163 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4165 else if(encoded_bytes < *bytes)
4166 *bytes = encoded_bytes;
4167 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4168 encoder->private_->verify.output.data += *bytes;
4169 encoder->private_->verify.output.bytes -= *bytes;
4172 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4175 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4177 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4179 const unsigned channels = frame->header.channels;
4180 const unsigned blocksize = frame->header.blocksize;
4181 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4185 for(channel = 0; channel < channels; channel++) {
4186 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4187 unsigned i, sample = 0;
4188 FLAC__int32 expect = 0, got = 0;
4190 for(i = 0; i < blocksize; i++) {
4191 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4193 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4194 got = (FLAC__int32)buffer[channel][i];
4198 FLAC__ASSERT(i < blocksize);
4199 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4200 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4201 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4202 encoder->private_->verify.error_stats.channel = channel;
4203 encoder->private_->verify.error_stats.sample = sample;
4204 encoder->private_->verify.error_stats.expected = expect;
4205 encoder->private_->verify.error_stats.got = got;
4206 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4207 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4210 /* dequeue the frame from the fifo */
4211 encoder->private_->verify.input_fifo.tail -= blocksize;
4212 FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
4213 for(channel = 0; channel < channels; channel++)
4214 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]));
4215 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4218 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4220 (void)decoder, (void)metadata, (void)client_data;
4223 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4225 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4226 (void)decoder, (void)status;
4227 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4230 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4234 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4236 if (feof(encoder->private_->file))
4237 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4238 else if (ferror(encoder->private_->file))
4239 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4241 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4244 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4248 if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
4249 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4251 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4254 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4260 offset = ftello(encoder->private_->file);
4263 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4266 *absolute_byte_offset = (FLAC__uint64)offset;
4267 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4271 #ifdef FLAC__VALGRIND_TESTING
4272 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4274 size_t ret = fwrite(ptr, size, nmemb, stream);
4280 #define local__fwrite fwrite
4283 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4285 (void)client_data, (void)current_frame;
4287 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4288 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4290 /* We would like to be able to use 'samples > 0' in the
4291 * clause here but currently because of the nature of our
4292 * Ogg writing implementation, 'samples' is always 0 (see
4293 * ogg_encoder_aspect.c). The downside is extra progress
4296 encoder->private_->is_ogg? true :
4301 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4302 * because at this point in the callback chain, the stats
4303 * have not been updated. Only after we return and control
4304 * gets back to write_frame_() are the stats updated
4306 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);
4308 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4311 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4315 * This will forcibly set stdout to binary mode (for OSes that require it)
4317 FILE *get_binary_stdout_(void)
4319 /* if something breaks here it is probably due to the presence or
4320 * absence of an underscore before the identifiers 'setmode',
4321 * 'fileno', and/or 'O_BINARY'; check your system header files.
4323 #if defined _MSC_VER || defined __MINGW32__
4324 _setmode(_fileno(stdout), _O_BINARY);
4325 #elif defined __CYGWIN__
4326 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4327 setmode(_fileno(stdout), _O_BINARY);
4328 #elif defined __EMX__
4329 setmode(fileno(stdout), O_BINARY);