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.
38 #include <stdlib.h> /* for malloc() */
39 #include <string.h> /* for memcpy() */
40 #include <sys/types.h> /* for off_t */
41 #include "FLAC/assert.h"
42 #include "FLAC/stream_decoder.h"
43 #include "protected/stream_encoder.h"
44 #include "private/bitwriter.h"
45 #include "private/bitmath.h"
46 #include "private/crc.h"
47 #include "private/cpu.h"
48 #include "private/fixed.h"
49 #include "private/format.h"
50 #include "private/lpc.h"
51 #include "private/md5.h"
52 #include "private/memory.h"
53 #include "private/macros.h"
55 #include "private/ogg_helper.h"
56 #include "private/ogg_mapping.h"
58 #include "private/stream_encoder_framing.h"
59 #include "private/window.h"
60 #include "share/alloc.h"
61 #include "share/compat.h"
62 #include "share/private.h"
65 /* Exact Rice codeword length calculation is off by default. The simple
66 * (and fast) estimation (of how many bits a residual value will be
67 * encoded with) in this encoder is very good, almost always yielding
68 * compression within 0.1% of exact calculation.
70 #undef EXACT_RICE_BITS_CALCULATION
71 /* Rice parameter searching is off by default. The simple (and fast)
72 * parameter estimation in this encoder is very good, almost always
73 * yielding compression within 0.1% of the optimal parameters.
75 #undef ENABLE_RICE_PARAMETER_SEARCH
79 FLAC__int32 *data[FLAC__MAX_CHANNELS];
80 unsigned size; /* of each data[] in samples */
85 const FLAC__byte *data;
92 ENCODER_IN_METADATA = 1,
96 static struct CompressionLevels {
97 FLAC__bool do_mid_side_stereo;
98 FLAC__bool loose_mid_side_stereo;
99 unsigned max_lpc_order;
100 unsigned qlp_coeff_precision;
101 FLAC__bool do_qlp_coeff_prec_search;
102 FLAC__bool do_escape_coding;
103 FLAC__bool do_exhaustive_model_search;
104 unsigned min_residual_partition_order;
105 unsigned max_residual_partition_order;
106 unsigned rice_parameter_search_dist;
107 } compression_levels_[] = {
108 { false, false, 0, 0, false, false, false, 0, 3, 0 },
109 { true , true , 0, 0, false, false, false, 0, 3, 0 },
110 { true , false, 0, 0, false, false, false, 0, 3, 0 },
111 { false, false, 6, 0, false, false, false, 0, 4, 0 },
112 { true , true , 8, 0, false, false, false, 0, 4, 0 },
113 { true , false, 8, 0, false, false, false, 0, 5, 0 },
114 { true , false, 8, 0, false, false, false, 0, 6, 0 },
115 { true , false, 8, 0, false, false, true , 0, 6, 0 },
116 { true , false, 12, 0, false, false, true , 0, 6, 0 }
120 /***********************************************************************
122 * Private class method prototypes
124 ***********************************************************************/
126 static void set_defaults_(FLAC__StreamEncoder *encoder);
127 static void free_(FLAC__StreamEncoder *encoder);
128 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
129 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
130 static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
131 static void update_metadata_(const FLAC__StreamEncoder *encoder);
133 static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
135 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
136 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
138 static FLAC__bool process_subframe_(
139 FLAC__StreamEncoder *encoder,
140 unsigned min_partition_order,
141 unsigned max_partition_order,
142 const FLAC__FrameHeader *frame_header,
143 unsigned subframe_bps,
144 const FLAC__int32 integer_signal[],
145 FLAC__Subframe *subframe[2],
146 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
147 FLAC__int32 *residual[2],
148 unsigned *best_subframe,
152 static FLAC__bool add_subframe_(
153 FLAC__StreamEncoder *encoder,
155 unsigned subframe_bps,
156 const FLAC__Subframe *subframe,
157 FLAC__BitWriter *frame
160 static unsigned evaluate_constant_subframe_(
161 FLAC__StreamEncoder *encoder,
162 const FLAC__int32 signal,
164 unsigned subframe_bps,
165 FLAC__Subframe *subframe
168 static unsigned evaluate_fixed_subframe_(
169 FLAC__StreamEncoder *encoder,
170 const FLAC__int32 signal[],
171 FLAC__int32 residual[],
172 FLAC__uint64 abs_residual_partition_sums[],
173 unsigned raw_bits_per_partition[],
175 unsigned subframe_bps,
177 unsigned rice_parameter,
178 unsigned rice_parameter_limit,
179 unsigned min_partition_order,
180 unsigned max_partition_order,
181 FLAC__bool do_escape_coding,
182 unsigned rice_parameter_search_dist,
183 FLAC__Subframe *subframe,
184 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
187 #ifndef FLAC__INTEGER_ONLY_LIBRARY
188 static unsigned evaluate_lpc_subframe_(
189 FLAC__StreamEncoder *encoder,
190 const FLAC__int32 signal[],
191 FLAC__int32 residual[],
192 FLAC__uint64 abs_residual_partition_sums[],
193 unsigned raw_bits_per_partition[],
194 const FLAC__real lp_coeff[],
196 unsigned subframe_bps,
198 unsigned qlp_coeff_precision,
199 unsigned rice_parameter,
200 unsigned rice_parameter_limit,
201 unsigned min_partition_order,
202 unsigned max_partition_order,
203 FLAC__bool do_escape_coding,
204 unsigned rice_parameter_search_dist,
205 FLAC__Subframe *subframe,
206 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
210 static unsigned evaluate_verbatim_subframe_(
211 FLAC__StreamEncoder *encoder,
212 const FLAC__int32 signal[],
214 unsigned subframe_bps,
215 FLAC__Subframe *subframe
218 static unsigned find_best_partition_order_(
219 struct FLAC__StreamEncoderPrivate *private_,
220 const FLAC__int32 residual[],
221 FLAC__uint64 abs_residual_partition_sums[],
222 unsigned raw_bits_per_partition[],
223 unsigned residual_samples,
224 unsigned predictor_order,
225 unsigned rice_parameter,
226 unsigned rice_parameter_limit,
227 unsigned min_partition_order,
228 unsigned max_partition_order,
230 FLAC__bool do_escape_coding,
231 unsigned rice_parameter_search_dist,
232 FLAC__EntropyCodingMethod *best_ecm
235 static void precompute_partition_info_sums_(
236 const FLAC__int32 residual[],
237 FLAC__uint64 abs_residual_partition_sums[],
238 unsigned residual_samples,
239 unsigned predictor_order,
240 unsigned min_partition_order,
241 unsigned max_partition_order,
245 static void precompute_partition_info_escapes_(
246 const FLAC__int32 residual[],
247 unsigned raw_bits_per_partition[],
248 unsigned residual_samples,
249 unsigned predictor_order,
250 unsigned min_partition_order,
251 unsigned max_partition_order
254 static FLAC__bool set_partitioned_rice_(
255 #ifdef EXACT_RICE_BITS_CALCULATION
256 const FLAC__int32 residual[],
258 const FLAC__uint64 abs_residual_partition_sums[],
259 const unsigned raw_bits_per_partition[],
260 const unsigned residual_samples,
261 const unsigned predictor_order,
262 const unsigned suggested_rice_parameter,
263 const unsigned rice_parameter_limit,
264 const unsigned rice_parameter_search_dist,
265 const unsigned partition_order,
266 const FLAC__bool search_for_escapes,
267 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
271 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
273 /* verify-related routines: */
274 static void append_to_verify_fifo_(
275 verify_input_fifo *fifo,
276 const FLAC__int32 * const input[],
277 unsigned input_offset,
279 unsigned wide_samples
282 static void append_to_verify_fifo_interleaved_(
283 verify_input_fifo *fifo,
284 const FLAC__int32 input[],
285 unsigned input_offset,
287 unsigned wide_samples
290 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
291 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
292 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
293 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
295 static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
296 static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
297 static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
298 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);
299 static FILE *get_binary_stdout_(void);
302 /***********************************************************************
306 ***********************************************************************/
308 typedef struct FLAC__StreamEncoderPrivate {
309 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
310 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
311 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
312 #ifndef FLAC__INTEGER_ONLY_LIBRARY
313 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */
314 FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */
315 FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
316 FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */
318 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
319 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
320 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
321 FLAC__int32 *residual_workspace_mid_side[2][2];
322 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
323 FLAC__Subframe subframe_workspace_mid_side[2][2];
324 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
325 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
326 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
327 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
328 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
329 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
330 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
331 unsigned best_subframe_mid_side[2];
332 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
333 unsigned best_subframe_bits_mid_side[2];
334 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
335 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
336 FLAC__BitWriter *frame; /* the current frame being worked on */
337 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
338 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
339 FLAC__ChannelAssignment last_channel_assignment;
340 FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
341 FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
342 unsigned current_sample_number;
343 unsigned current_frame_number;
344 FLAC__MD5Context md5context;
345 FLAC__CPUInfo cpuinfo;
346 #ifndef FLAC__INTEGER_ONLY_LIBRARY
347 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
349 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
351 #ifndef FLAC__INTEGER_ONLY_LIBRARY
352 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
353 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[]);
354 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[]);
355 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[]);
357 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
358 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
359 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
360 FLAC__bool disable_constant_subframes;
361 FLAC__bool disable_fixed_subframes;
362 FLAC__bool disable_verbatim_subframes;
366 FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
367 FLAC__StreamEncoderSeekCallback seek_callback;
368 FLAC__StreamEncoderTellCallback tell_callback;
369 FLAC__StreamEncoderWriteCallback write_callback;
370 FLAC__StreamEncoderMetadataCallback metadata_callback;
371 FLAC__StreamEncoderProgressCallback progress_callback;
373 unsigned first_seekpoint_to_check;
374 FILE *file; /* only used when encoding to a file */
375 FLAC__uint64 bytes_written;
376 FLAC__uint64 samples_written;
377 unsigned frames_written;
378 unsigned total_frames_estimate;
379 /* unaligned (original) pointers to allocated data */
380 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
381 FLAC__int32 *integer_signal_mid_side_unaligned[2];
382 #ifndef FLAC__INTEGER_ONLY_LIBRARY
383 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */
384 FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */
385 FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
386 FLAC__real *windowed_signal_unaligned;
388 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
389 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
390 FLAC__uint64 *abs_residual_partition_sums_unaligned;
391 unsigned *raw_bits_per_partition_unaligned;
393 * These fields have been moved here from private function local
394 * declarations merely to save stack space during encoding.
396 #ifndef FLAC__INTEGER_ONLY_LIBRARY
397 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
399 FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
401 * The data for the verify section
404 FLAC__StreamDecoder *decoder;
405 EncoderStateHint state_hint;
406 FLAC__bool needs_magic_hack;
407 verify_input_fifo input_fifo;
408 verify_output output;
410 FLAC__uint64 absolute_sample;
411 unsigned frame_number;
414 FLAC__int32 expected;
418 FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
419 } FLAC__StreamEncoderPrivate;
421 /***********************************************************************
423 * Public static class data
425 ***********************************************************************/
427 FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
428 "FLAC__STREAM_ENCODER_OK",
429 "FLAC__STREAM_ENCODER_UNINITIALIZED",
430 "FLAC__STREAM_ENCODER_OGG_ERROR",
431 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
432 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
433 "FLAC__STREAM_ENCODER_CLIENT_ERROR",
434 "FLAC__STREAM_ENCODER_IO_ERROR",
435 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
436 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
439 FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
440 "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
441 "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
442 "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
443 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
444 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
445 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
446 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
447 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
448 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
449 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
450 "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
451 "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
452 "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
453 "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
456 FLAC_API const char * const FLAC__StreamEncoderReadStatusString[] = {
457 "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
458 "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
459 "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
460 "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
463 FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
464 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
465 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
468 FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
469 "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
470 "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
471 "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
474 FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
475 "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
476 "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
477 "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
480 /* Number of samples that will be overread to watch for end of stream. By
481 * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
482 * always try to read blocksize+1 samples before encoding a block, so that
483 * even if the stream has a total sample count that is an integral multiple
484 * of the blocksize, we will still notice when we are encoding the last
485 * block. This is needed, for example, to correctly set the end-of-stream
486 * marker in Ogg FLAC.
488 * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
489 * not really any reason to change it.
491 static const unsigned OVERREAD_ = 1;
493 /***********************************************************************
495 * Class constructor/destructor
498 FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void)
500 FLAC__StreamEncoder *encoder;
503 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
505 encoder = calloc(1, sizeof(FLAC__StreamEncoder));
510 encoder->protected_ = calloc(1, sizeof(FLAC__StreamEncoderProtected));
511 if(encoder->protected_ == 0) {
516 encoder->private_ = calloc(1, sizeof(FLAC__StreamEncoderPrivate));
517 if(encoder->private_ == 0) {
518 free(encoder->protected_);
523 encoder->private_->frame = FLAC__bitwriter_new();
524 if(encoder->private_->frame == 0) {
525 free(encoder->private_);
526 free(encoder->protected_);
531 encoder->private_->file = 0;
533 set_defaults_(encoder);
535 encoder->private_->is_being_deleted = false;
537 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
538 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
539 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
541 for(i = 0; i < 2; i++) {
542 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
543 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
545 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
546 encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
547 encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
549 for(i = 0; i < 2; i++) {
550 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
551 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
554 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
555 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
556 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
558 for(i = 0; i < 2; i++) {
559 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
560 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
562 for(i = 0; i < 2; i++)
563 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
565 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
570 FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
577 FLAC__ASSERT(0 != encoder->protected_);
578 FLAC__ASSERT(0 != encoder->private_);
579 FLAC__ASSERT(0 != encoder->private_->frame);
581 encoder->private_->is_being_deleted = true;
583 (void)FLAC__stream_encoder_finish(encoder);
585 if(0 != encoder->private_->verify.decoder)
586 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
588 for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
589 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
590 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
592 for(i = 0; i < 2; i++) {
593 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
594 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
596 for(i = 0; i < 2; i++)
597 FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
599 FLAC__bitwriter_delete(encoder->private_->frame);
600 free(encoder->private_);
601 free(encoder->protected_);
605 /***********************************************************************
607 * Public class methods
609 ***********************************************************************/
611 static FLAC__StreamEncoderInitStatus init_stream_internal_(
612 FLAC__StreamEncoder *encoder,
613 FLAC__StreamEncoderReadCallback read_callback,
614 FLAC__StreamEncoderWriteCallback write_callback,
615 FLAC__StreamEncoderSeekCallback seek_callback,
616 FLAC__StreamEncoderTellCallback tell_callback,
617 FLAC__StreamEncoderMetadataCallback metadata_callback,
623 FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
625 FLAC__ASSERT(0 != encoder);
627 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
628 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
632 return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
635 if(0 == write_callback || (seek_callback && 0 == tell_callback))
636 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
638 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
639 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
641 if(encoder->protected_->channels != 2) {
642 encoder->protected_->do_mid_side_stereo = false;
643 encoder->protected_->loose_mid_side_stereo = false;
645 else if(!encoder->protected_->do_mid_side_stereo)
646 encoder->protected_->loose_mid_side_stereo = false;
648 if(encoder->protected_->bits_per_sample >= 32)
649 encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
651 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
652 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
654 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
655 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
657 if(encoder->protected_->blocksize == 0) {
658 if(encoder->protected_->max_lpc_order == 0)
659 encoder->protected_->blocksize = 1152;
661 encoder->protected_->blocksize = 4096;
664 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
665 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
667 if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
668 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
670 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
671 return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
673 if(encoder->protected_->qlp_coeff_precision == 0) {
674 if(encoder->protected_->bits_per_sample < 16) {
675 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
676 /* @@@ until then we'll make a guess */
677 encoder->protected_->qlp_coeff_precision = flac_max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
679 else if(encoder->protected_->bits_per_sample == 16) {
680 if(encoder->protected_->blocksize <= 192)
681 encoder->protected_->qlp_coeff_precision = 7;
682 else if(encoder->protected_->blocksize <= 384)
683 encoder->protected_->qlp_coeff_precision = 8;
684 else if(encoder->protected_->blocksize <= 576)
685 encoder->protected_->qlp_coeff_precision = 9;
686 else if(encoder->protected_->blocksize <= 1152)
687 encoder->protected_->qlp_coeff_precision = 10;
688 else if(encoder->protected_->blocksize <= 2304)
689 encoder->protected_->qlp_coeff_precision = 11;
690 else if(encoder->protected_->blocksize <= 4608)
691 encoder->protected_->qlp_coeff_precision = 12;
693 encoder->protected_->qlp_coeff_precision = 13;
696 if(encoder->protected_->blocksize <= 384)
697 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
698 else if(encoder->protected_->blocksize <= 1152)
699 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
701 encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
703 FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
705 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
706 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
708 if(encoder->protected_->streamable_subset) {
709 if(!FLAC__format_blocksize_is_subset(encoder->protected_->blocksize, encoder->protected_->sample_rate))
710 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
711 if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate))
712 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
714 encoder->protected_->bits_per_sample != 8 &&
715 encoder->protected_->bits_per_sample != 12 &&
716 encoder->protected_->bits_per_sample != 16 &&
717 encoder->protected_->bits_per_sample != 20 &&
718 encoder->protected_->bits_per_sample != 24
720 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
721 if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
722 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
724 encoder->protected_->sample_rate <= 48000 &&
726 encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
727 encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
730 return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
734 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
735 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
736 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
737 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
740 /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
741 if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
743 for(i1 = 1; i1 < encoder->protected_->num_metadata_blocks; i1++) {
744 if(0 != encoder->protected_->metadata[i1] && encoder->protected_->metadata[i1]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
745 FLAC__StreamMetadata *vc = encoder->protected_->metadata[i1];
747 encoder->protected_->metadata[i1] = encoder->protected_->metadata[i1-1];
748 encoder->protected_->metadata[0] = vc;
754 /* keep track of any SEEKTABLE block */
755 if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
757 for(i2 = 0; i2 < encoder->protected_->num_metadata_blocks; i2++) {
758 if(0 != encoder->protected_->metadata[i2] && encoder->protected_->metadata[i2]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
759 encoder->private_->seek_table = &encoder->protected_->metadata[i2]->data.seek_table;
760 break; /* take only the first one */
765 /* validate metadata */
766 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
767 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
768 metadata_has_seektable = false;
769 metadata_has_vorbis_comment = false;
770 metadata_picture_has_type1 = false;
771 metadata_picture_has_type2 = false;
772 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
773 const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
774 if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
775 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
776 else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
777 if(metadata_has_seektable) /* only one is allowed */
778 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
779 metadata_has_seektable = true;
780 if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
781 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
783 else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
784 if(metadata_has_vorbis_comment) /* only one is allowed */
785 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
786 metadata_has_vorbis_comment = true;
788 else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
789 if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
790 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
792 else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
793 if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
794 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
795 if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
796 if(metadata_picture_has_type1) /* there should only be 1 per stream */
797 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
798 metadata_picture_has_type1 = true;
799 /* standard icon must be 32x32 pixel PNG */
801 m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
803 (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
804 m->data.picture.width != 32 ||
805 m->data.picture.height != 32
808 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
810 else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
811 if(metadata_picture_has_type2) /* there should only be 1 per stream */
812 return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
813 metadata_picture_has_type2 = true;
818 encoder->private_->input_capacity = 0;
819 for(i = 0; i < encoder->protected_->channels; i++) {
820 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
821 #ifndef FLAC__INTEGER_ONLY_LIBRARY
822 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
825 for(i = 0; i < 2; i++) {
826 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
827 #ifndef FLAC__INTEGER_ONLY_LIBRARY
828 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
831 #ifndef FLAC__INTEGER_ONLY_LIBRARY
832 for(i = 0; i < encoder->protected_->num_apodizations; i++)
833 encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
834 encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
836 for(i = 0; i < encoder->protected_->channels; i++) {
837 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
838 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
839 encoder->private_->best_subframe[i] = 0;
841 for(i = 0; i < 2; i++) {
842 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
843 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
844 encoder->private_->best_subframe_mid_side[i] = 0;
846 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
847 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
848 #ifndef FLAC__INTEGER_ONLY_LIBRARY
849 encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
851 /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
852 /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
853 FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
854 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
855 FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
856 FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
857 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);
859 if(encoder->private_->loose_mid_side_stereo_frames == 0)
860 encoder->private_->loose_mid_side_stereo_frames = 1;
861 encoder->private_->loose_mid_side_stereo_frame_count = 0;
862 encoder->private_->current_sample_number = 0;
863 encoder->private_->current_frame_number = 0;
865 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
866 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? */
867 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
870 * get the CPU info and set the function pointers
872 FLAC__cpu_info(&encoder->private_->cpuinfo);
873 /* first default to the non-asm routines */
874 #ifndef FLAC__INTEGER_ONLY_LIBRARY
875 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
877 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
878 #ifndef FLAC__INTEGER_ONLY_LIBRARY
879 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
880 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
881 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
883 /* now override with asm where appropriate */
884 #ifndef FLAC__INTEGER_ONLY_LIBRARY
885 # ifndef FLAC__NO_ASM
886 if(encoder->private_->cpuinfo.use_asm) {
887 # ifdef FLAC__CPU_IA32
888 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
889 # ifdef FLAC__HAS_NASM
890 if(encoder->private_->cpuinfo.data.ia32.sse) {
891 if(encoder->protected_->max_lpc_order < 4)
892 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
893 else if(encoder->protected_->max_lpc_order < 8)
894 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
895 else if(encoder->protected_->max_lpc_order < 12)
896 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
898 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
900 else if(encoder->private_->cpuinfo.data.ia32._3dnow)
901 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
903 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
904 if(encoder->private_->cpuinfo.data.ia32.mmx) {
905 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
906 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
909 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
910 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
912 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
913 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
914 # endif /* FLAC__HAS_NASM */
915 # endif /* FLAC__CPU_IA32 */
917 # endif /* !FLAC__NO_ASM */
918 #endif /* !FLAC__INTEGER_ONLY_LIBRARY */
919 /* finally override based on wide-ness if necessary */
920 if(encoder->private_->use_wide_by_block) {
921 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
924 /* set state to OK; from here on, errors are fatal and we'll override the state then */
925 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
928 encoder->private_->is_ogg = is_ogg;
929 if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
930 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
931 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
935 encoder->private_->read_callback = read_callback;
936 encoder->private_->write_callback = write_callback;
937 encoder->private_->seek_callback = seek_callback;
938 encoder->private_->tell_callback = tell_callback;
939 encoder->private_->metadata_callback = metadata_callback;
940 encoder->private_->client_data = client_data;
942 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
943 /* the above function sets the state for us in case of an error */
944 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
947 if(!FLAC__bitwriter_init(encoder->private_->frame)) {
948 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
949 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
953 * Set up the verify stuff if necessary
955 if(encoder->protected_->verify) {
957 * First, set up the fifo which will hold the
958 * original signal to compare against
960 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
961 for(i = 0; i < encoder->protected_->channels; i++) {
962 if(0 == (encoder->private_->verify.input_fifo.data[i] = safe_malloc_mul_2op_p(sizeof(FLAC__int32), /*times*/encoder->private_->verify.input_fifo.size))) {
963 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
964 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
967 encoder->private_->verify.input_fifo.tail = 0;
970 * Now set up a stream decoder for verification
972 if(0 == encoder->private_->verify.decoder) {
973 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
974 if(0 == encoder->private_->verify.decoder) {
975 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
976 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
980 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) {
981 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
982 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
985 encoder->private_->verify.error_stats.absolute_sample = 0;
986 encoder->private_->verify.error_stats.frame_number = 0;
987 encoder->private_->verify.error_stats.channel = 0;
988 encoder->private_->verify.error_stats.sample = 0;
989 encoder->private_->verify.error_stats.expected = 0;
990 encoder->private_->verify.error_stats.got = 0;
993 * These must be done before we write any metadata, because that
994 * calls the write_callback, which uses these values.
996 encoder->private_->first_seekpoint_to_check = 0;
997 encoder->private_->samples_written = 0;
998 encoder->protected_->streaminfo_offset = 0;
999 encoder->protected_->seektable_offset = 0;
1000 encoder->protected_->audio_offset = 0;
1003 * write the stream header
1005 if(encoder->protected_->verify)
1006 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
1007 if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
1008 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1009 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1011 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1012 /* the above function sets the state for us in case of an error */
1013 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1017 * write the STREAMINFO metadata block
1019 if(encoder->protected_->verify)
1020 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
1021 encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
1022 encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
1023 encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
1024 encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
1025 encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
1026 encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
1027 encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
1028 encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
1029 encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
1030 encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
1031 encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
1032 memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
1033 if(encoder->protected_->do_md5)
1034 FLAC__MD5Init(&encoder->private_->md5context);
1035 if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
1036 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1037 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1039 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1040 /* the above function sets the state for us in case of an error */
1041 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1045 * Now that the STREAMINFO block is written, we can init this to an
1046 * absurdly-high value...
1048 encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
1049 /* ... and clear this to 0 */
1050 encoder->private_->streaminfo.data.stream_info.total_samples = 0;
1053 * Check to see if the supplied metadata contains a VORBIS_COMMENT;
1054 * if not, we will write an empty one (FLAC__add_metadata_block()
1055 * automatically supplies the vendor string).
1057 * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
1058 * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
1059 * true it will have already insured that the metadata list is properly
1062 if(!metadata_has_vorbis_comment) {
1063 FLAC__StreamMetadata vorbis_comment;
1064 vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
1065 vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
1066 vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
1067 vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
1068 vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
1069 vorbis_comment.data.vorbis_comment.num_comments = 0;
1070 vorbis_comment.data.vorbis_comment.comments = 0;
1071 if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
1072 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1073 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1075 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1076 /* the above function sets the state for us in case of an error */
1077 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1082 * write the user's metadata blocks
1084 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
1085 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
1086 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
1087 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1088 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1090 if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
1091 /* the above function sets the state for us in case of an error */
1092 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1096 /* now that all the metadata is written, we save the stream offset */
1097 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 */
1098 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
1099 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1102 if(encoder->protected_->verify)
1103 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
1105 return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
1108 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
1109 FLAC__StreamEncoder *encoder,
1110 FLAC__StreamEncoderWriteCallback write_callback,
1111 FLAC__StreamEncoderSeekCallback seek_callback,
1112 FLAC__StreamEncoderTellCallback tell_callback,
1113 FLAC__StreamEncoderMetadataCallback metadata_callback,
1117 return init_stream_internal_(
1119 /*read_callback=*/0,
1129 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
1130 FLAC__StreamEncoder *encoder,
1131 FLAC__StreamEncoderReadCallback read_callback,
1132 FLAC__StreamEncoderWriteCallback write_callback,
1133 FLAC__StreamEncoderSeekCallback seek_callback,
1134 FLAC__StreamEncoderTellCallback tell_callback,
1135 FLAC__StreamEncoderMetadataCallback metadata_callback,
1139 return init_stream_internal_(
1151 static FLAC__StreamEncoderInitStatus init_FILE_internal_(
1152 FLAC__StreamEncoder *encoder,
1154 FLAC__StreamEncoderProgressCallback progress_callback,
1159 FLAC__StreamEncoderInitStatus init_status;
1161 FLAC__ASSERT(0 != encoder);
1162 FLAC__ASSERT(0 != file);
1164 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1165 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1167 /* double protection */
1169 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1170 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1174 * To make sure that our file does not go unclosed after an error, we
1175 * must assign the FILE pointer before any further error can occur in
1179 file = get_binary_stdout_(); /* just to be safe */
1181 encoder->private_->file = file;
1183 encoder->private_->progress_callback = progress_callback;
1184 encoder->private_->bytes_written = 0;
1185 encoder->private_->samples_written = 0;
1186 encoder->private_->frames_written = 0;
1188 init_status = init_stream_internal_(
1190 encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
1191 file_write_callback_,
1192 encoder->private_->file == stdout? 0 : file_seek_callback_,
1193 encoder->private_->file == stdout? 0 : file_tell_callback_,
1194 /*metadata_callback=*/0,
1198 if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
1199 /* the above function sets the state for us in case of an error */
1204 unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
1206 FLAC__ASSERT(blocksize != 0);
1207 encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
1213 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
1214 FLAC__StreamEncoder *encoder,
1216 FLAC__StreamEncoderProgressCallback progress_callback,
1220 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
1223 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
1224 FLAC__StreamEncoder *encoder,
1226 FLAC__StreamEncoderProgressCallback progress_callback,
1230 return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
1233 static FLAC__StreamEncoderInitStatus init_file_internal_(
1234 FLAC__StreamEncoder *encoder,
1235 const char *filename,
1236 FLAC__StreamEncoderProgressCallback progress_callback,
1243 FLAC__ASSERT(0 != encoder);
1246 * To make sure that our file does not go unclosed after an error, we
1247 * have to do the same entrance checks here that are later performed
1248 * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned.
1250 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1251 return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
1253 file = filename? flac_fopen(filename, "w+b") : stdout;
1256 encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
1257 return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
1260 return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
1263 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
1264 FLAC__StreamEncoder *encoder,
1265 const char *filename,
1266 FLAC__StreamEncoderProgressCallback progress_callback,
1270 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
1273 FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
1274 FLAC__StreamEncoder *encoder,
1275 const char *filename,
1276 FLAC__StreamEncoderProgressCallback progress_callback,
1280 return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
1283 FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
1285 FLAC__bool error = false;
1287 FLAC__ASSERT(0 != encoder);
1288 FLAC__ASSERT(0 != encoder->private_);
1289 FLAC__ASSERT(0 != encoder->protected_);
1291 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
1294 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
1295 if(encoder->private_->current_sample_number != 0) {
1296 const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
1297 encoder->protected_->blocksize = encoder->private_->current_sample_number;
1298 if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
1303 if(encoder->protected_->do_md5)
1304 FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
1306 if(!encoder->private_->is_being_deleted) {
1307 if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
1308 if(encoder->private_->seek_callback) {
1310 if(encoder->private_->is_ogg)
1311 update_ogg_metadata_(encoder);
1314 update_metadata_(encoder);
1316 /* check if an error occurred while updating metadata */
1317 if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
1320 if(encoder->private_->metadata_callback)
1321 encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
1324 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
1326 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
1331 if(0 != encoder->private_->file) {
1332 if(encoder->private_->file != stdout)
1333 fclose(encoder->private_->file);
1334 encoder->private_->file = 0;
1338 if(encoder->private_->is_ogg)
1339 FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
1343 set_defaults_(encoder);
1346 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
1351 FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
1353 FLAC__ASSERT(0 != encoder);
1354 FLAC__ASSERT(0 != encoder->private_);
1355 FLAC__ASSERT(0 != encoder->protected_);
1356 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1359 /* can't check encoder->private_->is_ogg since that's not set until init time */
1360 FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
1368 FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
1370 FLAC__ASSERT(0 != encoder);
1371 FLAC__ASSERT(0 != encoder->private_);
1372 FLAC__ASSERT(0 != encoder->protected_);
1373 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1375 #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
1376 encoder->protected_->verify = value;
1381 FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
1383 FLAC__ASSERT(0 != encoder);
1384 FLAC__ASSERT(0 != encoder->private_);
1385 FLAC__ASSERT(0 != encoder->protected_);
1386 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1388 encoder->protected_->streamable_subset = value;
1392 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value)
1394 FLAC__ASSERT(0 != encoder);
1395 FLAC__ASSERT(0 != encoder->private_);
1396 FLAC__ASSERT(0 != encoder->protected_);
1397 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1399 encoder->protected_->do_md5 = value;
1403 FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
1405 FLAC__ASSERT(0 != encoder);
1406 FLAC__ASSERT(0 != encoder->private_);
1407 FLAC__ASSERT(0 != encoder->protected_);
1408 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1410 encoder->protected_->channels = value;
1414 FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
1416 FLAC__ASSERT(0 != encoder);
1417 FLAC__ASSERT(0 != encoder->private_);
1418 FLAC__ASSERT(0 != encoder->protected_);
1419 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1421 encoder->protected_->bits_per_sample = value;
1425 FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
1427 FLAC__ASSERT(0 != encoder);
1428 FLAC__ASSERT(0 != encoder->private_);
1429 FLAC__ASSERT(0 != encoder->protected_);
1430 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1432 encoder->protected_->sample_rate = value;
1436 FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
1438 FLAC__bool ok = true;
1439 FLAC__ASSERT(0 != encoder);
1440 FLAC__ASSERT(0 != encoder->private_);
1441 FLAC__ASSERT(0 != encoder->protected_);
1442 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1444 if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
1445 value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
1446 ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
1447 ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
1448 #ifndef FLAC__INTEGER_ONLY_LIBRARY
1451 ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
1452 /* but it's too hard to specify the string in a locale-specific way */
1454 encoder->protected_->num_apodizations = 1;
1455 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1456 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1459 ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
1460 ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
1461 ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
1462 ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
1463 ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
1464 ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
1465 ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
1466 ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
1470 FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
1472 FLAC__ASSERT(0 != encoder);
1473 FLAC__ASSERT(0 != encoder->private_);
1474 FLAC__ASSERT(0 != encoder->protected_);
1475 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1477 encoder->protected_->blocksize = value;
1481 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1483 FLAC__ASSERT(0 != encoder);
1484 FLAC__ASSERT(0 != encoder->private_);
1485 FLAC__ASSERT(0 != encoder->protected_);
1486 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1488 encoder->protected_->do_mid_side_stereo = value;
1492 FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
1494 FLAC__ASSERT(0 != encoder);
1495 FLAC__ASSERT(0 != encoder->private_);
1496 FLAC__ASSERT(0 != encoder->protected_);
1497 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1499 encoder->protected_->loose_mid_side_stereo = value;
1503 /*@@@@add to tests*/
1504 FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
1506 FLAC__ASSERT(0 != encoder);
1507 FLAC__ASSERT(0 != encoder->private_);
1508 FLAC__ASSERT(0 != encoder->protected_);
1509 FLAC__ASSERT(0 != specification);
1510 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1512 #ifdef FLAC__INTEGER_ONLY_LIBRARY
1513 (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
1515 encoder->protected_->num_apodizations = 0;
1517 const char *s = strchr(specification, ';');
1518 const size_t n = s? (size_t)(s - specification) : strlen(specification);
1519 if (n==8 && 0 == strncmp("bartlett" , specification, n))
1520 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
1521 else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
1522 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
1523 else if(n==8 && 0 == strncmp("blackman" , specification, n))
1524 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
1525 else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
1526 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
1527 else if(n==6 && 0 == strncmp("connes" , specification, n))
1528 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
1529 else if(n==7 && 0 == strncmp("flattop" , specification, n))
1530 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
1531 else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
1532 FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
1533 if (stddev > 0.0 && stddev <= 0.5) {
1534 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
1535 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
1538 else if(n==7 && 0 == strncmp("hamming" , specification, n))
1539 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
1540 else if(n==4 && 0 == strncmp("hann" , specification, n))
1541 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
1542 else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
1543 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
1544 else if(n==7 && 0 == strncmp("nuttall" , specification, n))
1545 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
1546 else if(n==9 && 0 == strncmp("rectangle" , specification, n))
1547 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
1548 else if(n==8 && 0 == strncmp("triangle" , specification, n))
1549 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
1550 else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
1551 FLAC__real p = (FLAC__real)strtod(specification+6, 0);
1552 if (p >= 0.0 && p <= 1.0) {
1553 encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
1554 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
1557 else if(n==5 && 0 == strncmp("welch" , specification, n))
1558 encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
1559 if (encoder->protected_->num_apodizations == 32)
1562 specification = s+1;
1566 if(encoder->protected_->num_apodizations == 0) {
1567 encoder->protected_->num_apodizations = 1;
1568 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
1569 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
1575 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
1577 FLAC__ASSERT(0 != encoder);
1578 FLAC__ASSERT(0 != encoder->private_);
1579 FLAC__ASSERT(0 != encoder->protected_);
1580 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1582 encoder->protected_->max_lpc_order = value;
1586 FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
1588 FLAC__ASSERT(0 != encoder);
1589 FLAC__ASSERT(0 != encoder->private_);
1590 FLAC__ASSERT(0 != encoder->protected_);
1591 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1593 encoder->protected_->qlp_coeff_precision = value;
1597 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1599 FLAC__ASSERT(0 != encoder);
1600 FLAC__ASSERT(0 != encoder->private_);
1601 FLAC__ASSERT(0 != encoder->protected_);
1602 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1604 encoder->protected_->do_qlp_coeff_prec_search = value;
1608 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
1610 FLAC__ASSERT(0 != encoder);
1611 FLAC__ASSERT(0 != encoder->private_);
1612 FLAC__ASSERT(0 != encoder->protected_);
1613 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1616 /*@@@ deprecated: */
1617 encoder->protected_->do_escape_coding = value;
1624 FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
1626 FLAC__ASSERT(0 != encoder);
1627 FLAC__ASSERT(0 != encoder->private_);
1628 FLAC__ASSERT(0 != encoder->protected_);
1629 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1631 encoder->protected_->do_exhaustive_model_search = value;
1635 FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1637 FLAC__ASSERT(0 != encoder);
1638 FLAC__ASSERT(0 != encoder->private_);
1639 FLAC__ASSERT(0 != encoder->protected_);
1640 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1642 encoder->protected_->min_residual_partition_order = value;
1646 FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
1648 FLAC__ASSERT(0 != encoder);
1649 FLAC__ASSERT(0 != encoder->private_);
1650 FLAC__ASSERT(0 != encoder->protected_);
1651 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1653 encoder->protected_->max_residual_partition_order = value;
1657 FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
1659 FLAC__ASSERT(0 != encoder);
1660 FLAC__ASSERT(0 != encoder->private_);
1661 FLAC__ASSERT(0 != encoder->protected_);
1662 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1665 /*@@@ deprecated: */
1666 encoder->protected_->rice_parameter_search_dist = value;
1673 FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
1675 FLAC__ASSERT(0 != encoder);
1676 FLAC__ASSERT(0 != encoder->private_);
1677 FLAC__ASSERT(0 != encoder->protected_);
1678 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1680 encoder->protected_->total_samples_estimate = value;
1684 FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
1686 FLAC__ASSERT(0 != encoder);
1687 FLAC__ASSERT(0 != encoder->private_);
1688 FLAC__ASSERT(0 != encoder->protected_);
1689 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1695 /* realloc() does not do exactly what we want so... */
1696 if(encoder->protected_->metadata) {
1697 free(encoder->protected_->metadata);
1698 encoder->protected_->metadata = 0;
1699 encoder->protected_->num_metadata_blocks = 0;
1702 FLAC__StreamMetadata **m;
1703 if(0 == (m = safe_malloc_mul_2op_p(sizeof(m[0]), /*times*/num_blocks)))
1705 memcpy(m, metadata, sizeof(m[0]) * num_blocks);
1706 encoder->protected_->metadata = m;
1707 encoder->protected_->num_metadata_blocks = num_blocks;
1710 if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
1717 * These three functions are not static, but not publically exposed in
1718 * include/FLAC/ either. They are used by the test suite.
1720 FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1722 FLAC__ASSERT(0 != encoder);
1723 FLAC__ASSERT(0 != encoder->private_);
1724 FLAC__ASSERT(0 != encoder->protected_);
1725 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1727 encoder->private_->disable_constant_subframes = value;
1731 FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1733 FLAC__ASSERT(0 != encoder);
1734 FLAC__ASSERT(0 != encoder->private_);
1735 FLAC__ASSERT(0 != encoder->protected_);
1736 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1738 encoder->private_->disable_fixed_subframes = value;
1742 FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
1744 FLAC__ASSERT(0 != encoder);
1745 FLAC__ASSERT(0 != encoder->private_);
1746 FLAC__ASSERT(0 != encoder->protected_);
1747 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
1749 encoder->private_->disable_verbatim_subframes = value;
1753 FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
1755 FLAC__ASSERT(0 != encoder);
1756 FLAC__ASSERT(0 != encoder->private_);
1757 FLAC__ASSERT(0 != encoder->protected_);
1758 return encoder->protected_->state;
1761 FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
1763 FLAC__ASSERT(0 != encoder);
1764 FLAC__ASSERT(0 != encoder->private_);
1765 FLAC__ASSERT(0 != encoder->protected_);
1766 if(encoder->protected_->verify)
1767 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
1769 return FLAC__STREAM_DECODER_UNINITIALIZED;
1772 FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
1774 FLAC__ASSERT(0 != encoder);
1775 FLAC__ASSERT(0 != encoder->private_);
1776 FLAC__ASSERT(0 != encoder->protected_);
1777 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
1778 return FLAC__StreamEncoderStateString[encoder->protected_->state];
1780 return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
1783 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)
1785 FLAC__ASSERT(0 != encoder);
1786 FLAC__ASSERT(0 != encoder->private_);
1787 FLAC__ASSERT(0 != encoder->protected_);
1788 if(0 != absolute_sample)
1789 *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
1790 if(0 != frame_number)
1791 *frame_number = encoder->private_->verify.error_stats.frame_number;
1793 *channel = encoder->private_->verify.error_stats.channel;
1795 *sample = encoder->private_->verify.error_stats.sample;
1797 *expected = encoder->private_->verify.error_stats.expected;
1799 *got = encoder->private_->verify.error_stats.got;
1802 FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
1804 FLAC__ASSERT(0 != encoder);
1805 FLAC__ASSERT(0 != encoder->private_);
1806 FLAC__ASSERT(0 != encoder->protected_);
1807 return encoder->protected_->verify;
1810 FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
1812 FLAC__ASSERT(0 != encoder);
1813 FLAC__ASSERT(0 != encoder->private_);
1814 FLAC__ASSERT(0 != encoder->protected_);
1815 return encoder->protected_->streamable_subset;
1818 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder)
1820 FLAC__ASSERT(0 != encoder);
1821 FLAC__ASSERT(0 != encoder->private_);
1822 FLAC__ASSERT(0 != encoder->protected_);
1823 return encoder->protected_->do_md5;
1826 FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
1828 FLAC__ASSERT(0 != encoder);
1829 FLAC__ASSERT(0 != encoder->private_);
1830 FLAC__ASSERT(0 != encoder->protected_);
1831 return encoder->protected_->channels;
1834 FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
1836 FLAC__ASSERT(0 != encoder);
1837 FLAC__ASSERT(0 != encoder->private_);
1838 FLAC__ASSERT(0 != encoder->protected_);
1839 return encoder->protected_->bits_per_sample;
1842 FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
1844 FLAC__ASSERT(0 != encoder);
1845 FLAC__ASSERT(0 != encoder->private_);
1846 FLAC__ASSERT(0 != encoder->protected_);
1847 return encoder->protected_->sample_rate;
1850 FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
1852 FLAC__ASSERT(0 != encoder);
1853 FLAC__ASSERT(0 != encoder->private_);
1854 FLAC__ASSERT(0 != encoder->protected_);
1855 return encoder->protected_->blocksize;
1858 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1860 FLAC__ASSERT(0 != encoder);
1861 FLAC__ASSERT(0 != encoder->private_);
1862 FLAC__ASSERT(0 != encoder->protected_);
1863 return encoder->protected_->do_mid_side_stereo;
1866 FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
1868 FLAC__ASSERT(0 != encoder);
1869 FLAC__ASSERT(0 != encoder->private_);
1870 FLAC__ASSERT(0 != encoder->protected_);
1871 return encoder->protected_->loose_mid_side_stereo;
1874 FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
1876 FLAC__ASSERT(0 != encoder);
1877 FLAC__ASSERT(0 != encoder->private_);
1878 FLAC__ASSERT(0 != encoder->protected_);
1879 return encoder->protected_->max_lpc_order;
1882 FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
1884 FLAC__ASSERT(0 != encoder);
1885 FLAC__ASSERT(0 != encoder->private_);
1886 FLAC__ASSERT(0 != encoder->protected_);
1887 return encoder->protected_->qlp_coeff_precision;
1890 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
1892 FLAC__ASSERT(0 != encoder);
1893 FLAC__ASSERT(0 != encoder->private_);
1894 FLAC__ASSERT(0 != encoder->protected_);
1895 return encoder->protected_->do_qlp_coeff_prec_search;
1898 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
1900 FLAC__ASSERT(0 != encoder);
1901 FLAC__ASSERT(0 != encoder->private_);
1902 FLAC__ASSERT(0 != encoder->protected_);
1903 return encoder->protected_->do_escape_coding;
1906 FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
1908 FLAC__ASSERT(0 != encoder);
1909 FLAC__ASSERT(0 != encoder->private_);
1910 FLAC__ASSERT(0 != encoder->protected_);
1911 return encoder->protected_->do_exhaustive_model_search;
1914 FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
1916 FLAC__ASSERT(0 != encoder);
1917 FLAC__ASSERT(0 != encoder->private_);
1918 FLAC__ASSERT(0 != encoder->protected_);
1919 return encoder->protected_->min_residual_partition_order;
1922 FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
1924 FLAC__ASSERT(0 != encoder);
1925 FLAC__ASSERT(0 != encoder->private_);
1926 FLAC__ASSERT(0 != encoder->protected_);
1927 return encoder->protected_->max_residual_partition_order;
1930 FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
1932 FLAC__ASSERT(0 != encoder);
1933 FLAC__ASSERT(0 != encoder->private_);
1934 FLAC__ASSERT(0 != encoder->protected_);
1935 return encoder->protected_->rice_parameter_search_dist;
1938 FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
1940 FLAC__ASSERT(0 != encoder);
1941 FLAC__ASSERT(0 != encoder->private_);
1942 FLAC__ASSERT(0 != encoder->protected_);
1943 return encoder->protected_->total_samples_estimate;
1946 FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
1948 unsigned i, j = 0, channel;
1949 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
1951 FLAC__ASSERT(0 != encoder);
1952 FLAC__ASSERT(0 != encoder->private_);
1953 FLAC__ASSERT(0 != encoder->protected_);
1954 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1957 const unsigned n = flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j);
1959 if(encoder->protected_->verify)
1960 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n);
1962 for(channel = 0; channel < channels; channel++)
1963 memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n);
1965 if(encoder->protected_->do_mid_side_stereo) {
1966 FLAC__ASSERT(channels == 2);
1967 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
1968 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
1969 encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j];
1970 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' ! */
1976 encoder->private_->current_sample_number += n;
1978 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
1979 if(encoder->private_->current_sample_number > blocksize) {
1980 FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_);
1981 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
1982 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
1984 /* move unprocessed overread samples to beginnings of arrays */
1985 for(channel = 0; channel < channels; channel++)
1986 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
1987 if(encoder->protected_->do_mid_side_stereo) {
1988 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
1989 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
1991 encoder->private_->current_sample_number = 1;
1993 } while(j < samples);
1998 FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
2000 unsigned i, j, k, channel;
2001 FLAC__int32 x, mid, side;
2002 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
2004 FLAC__ASSERT(0 != encoder);
2005 FLAC__ASSERT(0 != encoder->private_);
2006 FLAC__ASSERT(0 != encoder->protected_);
2007 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2011 * we have several flavors of the same basic loop, optimized for
2012 * different conditions:
2014 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
2016 * stereo coding: unroll channel loop
2019 if(encoder->protected_->verify)
2020 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2022 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2023 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2024 encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
2026 encoder->private_->integer_signal[1][i] = x;
2029 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
2030 encoder->private_->integer_signal_mid_side[1][i] = side;
2031 encoder->private_->integer_signal_mid_side[0][i] = mid;
2033 encoder->private_->current_sample_number = i;
2034 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2036 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2038 /* move unprocessed overread samples to beginnings of arrays */
2039 FLAC__ASSERT(i == blocksize+OVERREAD_);
2040 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2041 encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize];
2042 encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize];
2043 encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
2044 encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
2045 encoder->private_->current_sample_number = 1;
2047 } while(j < samples);
2051 * independent channel coding: buffer each channel in inner loop
2054 if(encoder->protected_->verify)
2055 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
2057 /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
2058 for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
2059 for(channel = 0; channel < channels; channel++)
2060 encoder->private_->integer_signal[channel][i] = buffer[k++];
2062 encoder->private_->current_sample_number = i;
2063 /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
2065 if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
2067 /* move unprocessed overread samples to beginnings of arrays */
2068 FLAC__ASSERT(i == blocksize+OVERREAD_);
2069 FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
2070 for(channel = 0; channel < channels; channel++)
2071 encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
2072 encoder->private_->current_sample_number = 1;
2074 } while(j < samples);
2080 /***********************************************************************
2082 * Private class methods
2084 ***********************************************************************/
2086 void set_defaults_(FLAC__StreamEncoder *encoder)
2088 FLAC__ASSERT(0 != encoder);
2090 #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
2091 encoder->protected_->verify = true;
2093 encoder->protected_->verify = false;
2095 encoder->protected_->streamable_subset = true;
2096 encoder->protected_->do_md5 = true;
2097 encoder->protected_->do_mid_side_stereo = false;
2098 encoder->protected_->loose_mid_side_stereo = false;
2099 encoder->protected_->channels = 2;
2100 encoder->protected_->bits_per_sample = 16;
2101 encoder->protected_->sample_rate = 44100;
2102 encoder->protected_->blocksize = 0;
2103 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2104 encoder->protected_->num_apodizations = 1;
2105 encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
2106 encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
2108 encoder->protected_->max_lpc_order = 0;
2109 encoder->protected_->qlp_coeff_precision = 0;
2110 encoder->protected_->do_qlp_coeff_prec_search = false;
2111 encoder->protected_->do_exhaustive_model_search = false;
2112 encoder->protected_->do_escape_coding = false;
2113 encoder->protected_->min_residual_partition_order = 0;
2114 encoder->protected_->max_residual_partition_order = 0;
2115 encoder->protected_->rice_parameter_search_dist = 0;
2116 encoder->protected_->total_samples_estimate = 0;
2117 encoder->protected_->metadata = 0;
2118 encoder->protected_->num_metadata_blocks = 0;
2120 encoder->private_->seek_table = 0;
2121 encoder->private_->disable_constant_subframes = false;
2122 encoder->private_->disable_fixed_subframes = false;
2123 encoder->private_->disable_verbatim_subframes = false;
2125 encoder->private_->is_ogg = false;
2127 encoder->private_->read_callback = 0;
2128 encoder->private_->write_callback = 0;
2129 encoder->private_->seek_callback = 0;
2130 encoder->private_->tell_callback = 0;
2131 encoder->private_->metadata_callback = 0;
2132 encoder->private_->progress_callback = 0;
2133 encoder->private_->client_data = 0;
2136 FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
2139 FLAC__stream_encoder_set_compression_level(encoder, 5);
2142 void free_(FLAC__StreamEncoder *encoder)
2144 unsigned i, channel;
2146 FLAC__ASSERT(0 != encoder);
2147 if(encoder->protected_->metadata) {
2148 free(encoder->protected_->metadata);
2149 encoder->protected_->metadata = 0;
2150 encoder->protected_->num_metadata_blocks = 0;
2152 for(i = 0; i < encoder->protected_->channels; i++) {
2153 if(0 != encoder->private_->integer_signal_unaligned[i]) {
2154 free(encoder->private_->integer_signal_unaligned[i]);
2155 encoder->private_->integer_signal_unaligned[i] = 0;
2157 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2158 if(0 != encoder->private_->real_signal_unaligned[i]) {
2159 free(encoder->private_->real_signal_unaligned[i]);
2160 encoder->private_->real_signal_unaligned[i] = 0;
2164 for(i = 0; i < 2; i++) {
2165 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
2166 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
2167 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
2169 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2170 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
2171 free(encoder->private_->real_signal_mid_side_unaligned[i]);
2172 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
2176 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2177 for(i = 0; i < encoder->protected_->num_apodizations; i++) {
2178 if(0 != encoder->private_->window_unaligned[i]) {
2179 free(encoder->private_->window_unaligned[i]);
2180 encoder->private_->window_unaligned[i] = 0;
2183 if(0 != encoder->private_->windowed_signal_unaligned) {
2184 free(encoder->private_->windowed_signal_unaligned);
2185 encoder->private_->windowed_signal_unaligned = 0;
2188 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2189 for(i = 0; i < 2; i++) {
2190 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
2191 free(encoder->private_->residual_workspace_unaligned[channel][i]);
2192 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
2196 for(channel = 0; channel < 2; channel++) {
2197 for(i = 0; i < 2; i++) {
2198 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
2199 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
2200 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
2204 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
2205 free(encoder->private_->abs_residual_partition_sums_unaligned);
2206 encoder->private_->abs_residual_partition_sums_unaligned = 0;
2208 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
2209 free(encoder->private_->raw_bits_per_partition_unaligned);
2210 encoder->private_->raw_bits_per_partition_unaligned = 0;
2212 if(encoder->protected_->verify) {
2213 for(i = 0; i < encoder->protected_->channels; i++) {
2214 if(0 != encoder->private_->verify.input_fifo.data[i]) {
2215 free(encoder->private_->verify.input_fifo.data[i]);
2216 encoder->private_->verify.input_fifo.data[i] = 0;
2220 FLAC__bitwriter_free(encoder->private_->frame);
2223 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
2226 unsigned i, channel;
2228 FLAC__ASSERT(new_blocksize > 0);
2229 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2230 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
2232 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
2233 if(new_blocksize <= encoder->private_->input_capacity)
2238 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
2239 * requires that the input arrays (in our case the integer signals)
2240 * have a buffer of up to 3 zeroes in front (at negative indices) for
2241 * alignment purposes; we use 4 in front to keep the data well-aligned.
2244 for(i = 0; ok && i < encoder->protected_->channels; i++) {
2245 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
2246 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
2247 encoder->private_->integer_signal[i] += 4;
2248 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2249 #if 0 /* @@@ currently unused */
2250 if(encoder->protected_->max_lpc_order > 0)
2251 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
2255 for(i = 0; ok && i < 2; i++) {
2256 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]);
2257 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
2258 encoder->private_->integer_signal_mid_side[i] += 4;
2259 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2260 #if 0 /* @@@ currently unused */
2261 if(encoder->protected_->max_lpc_order > 0)
2262 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]);
2266 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2267 if(ok && encoder->protected_->max_lpc_order > 0) {
2268 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
2269 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
2270 ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
2273 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
2274 for(i = 0; ok && i < 2; i++) {
2275 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
2278 for(channel = 0; ok && channel < 2; channel++) {
2279 for(i = 0; ok && i < 2; i++) {
2280 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]);
2283 /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */
2284 /*@@@ 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) */
2285 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
2286 if(encoder->protected_->do_escape_coding)
2287 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
2289 /* now adjust the windows if the blocksize has changed */
2290 #ifndef FLAC__INTEGER_ONLY_LIBRARY
2291 if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
2292 for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
2293 switch(encoder->protected_->apodizations[i].type) {
2294 case FLAC__APODIZATION_BARTLETT:
2295 FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
2297 case FLAC__APODIZATION_BARTLETT_HANN:
2298 FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
2300 case FLAC__APODIZATION_BLACKMAN:
2301 FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
2303 case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
2304 FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
2306 case FLAC__APODIZATION_CONNES:
2307 FLAC__window_connes(encoder->private_->window[i], new_blocksize);
2309 case FLAC__APODIZATION_FLATTOP:
2310 FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
2312 case FLAC__APODIZATION_GAUSS:
2313 FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
2315 case FLAC__APODIZATION_HAMMING:
2316 FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
2318 case FLAC__APODIZATION_HANN:
2319 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2321 case FLAC__APODIZATION_KAISER_BESSEL:
2322 FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
2324 case FLAC__APODIZATION_NUTTALL:
2325 FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
2327 case FLAC__APODIZATION_RECTANGLE:
2328 FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
2330 case FLAC__APODIZATION_TRIANGLE:
2331 FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
2333 case FLAC__APODIZATION_TUKEY:
2334 FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
2336 case FLAC__APODIZATION_WELCH:
2337 FLAC__window_welch(encoder->private_->window[i], new_blocksize);
2341 /* double protection */
2342 FLAC__window_hann(encoder->private_->window[i], new_blocksize);
2350 encoder->private_->input_capacity = new_blocksize;
2352 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2357 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
2359 const FLAC__byte *buffer;
2362 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2364 if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
2365 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2369 if(encoder->protected_->verify) {
2370 encoder->private_->verify.output.data = buffer;
2371 encoder->private_->verify.output.bytes = bytes;
2372 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
2373 encoder->private_->verify.needs_magic_hack = true;
2376 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
2377 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2378 FLAC__bitwriter_clear(encoder->private_->frame);
2379 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
2380 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
2386 if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2387 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2388 FLAC__bitwriter_clear(encoder->private_->frame);
2389 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2393 FLAC__bitwriter_release_buffer(encoder->private_->frame);
2394 FLAC__bitwriter_clear(encoder->private_->frame);
2397 encoder->private_->streaminfo.data.stream_info.min_framesize = flac_min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
2398 encoder->private_->streaminfo.data.stream_info.max_framesize = flac_max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
2404 FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
2406 FLAC__StreamEncoderWriteStatus status;
2407 FLAC__uint64 output_position = 0;
2409 #if FLAC__HAS_OGG == 0
2410 (void)is_last_block;
2413 /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
2414 if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
2415 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2416 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
2420 * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
2423 FLAC__MetadataType type = (buffer[0] & 0x7f);
2424 if(type == FLAC__METADATA_TYPE_STREAMINFO)
2425 encoder->protected_->streaminfo_offset = output_position;
2426 else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
2427 encoder->protected_->seektable_offset = output_position;
2431 * Mark the current seek point if hit (if audio_offset == 0 that
2432 * means we're still writing metadata and haven't hit the first
2435 if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
2436 const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
2437 const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
2438 const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
2439 FLAC__uint64 test_sample;
2441 for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
2442 test_sample = encoder->private_->seek_table->points[i].sample_number;
2443 if(test_sample > frame_last_sample) {
2446 else if(test_sample >= frame_first_sample) {
2447 encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
2448 encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
2449 encoder->private_->seek_table->points[i].frame_samples = blocksize;
2450 encoder->private_->first_seekpoint_to_check++;
2451 /* DO NOT: "break;" and here's why:
2452 * The seektable template may contain more than one target
2453 * sample for any given frame; we will keep looping, generating
2454 * duplicate seekpoints for them, and we'll clean it up later,
2455 * just before writing the seektable back to the metadata.
2459 encoder->private_->first_seekpoint_to_check++;
2465 if(encoder->private_->is_ogg) {
2466 status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
2467 &encoder->protected_->ogg_encoder_aspect,
2471 encoder->private_->current_frame_number,
2473 (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
2475 encoder->private_->client_data
2480 status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
2482 if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2483 encoder->private_->bytes_written += bytes;
2484 encoder->private_->samples_written += samples;
2485 /* we keep a high watermark on the number of frames written because
2486 * when the encoder goes back to write metadata, 'current_frame'
2487 * will drop back to 0.
2489 encoder->private_->frames_written = flac_max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
2492 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2497 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2498 void update_metadata_(const FLAC__StreamEncoder *encoder)
2500 FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2501 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2502 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2503 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2504 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2505 const unsigned bps = metadata->data.stream_info.bits_per_sample;
2506 FLAC__StreamEncoderSeekStatus seek_status;
2508 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2510 /* All this is based on intimate knowledge of the stream header
2511 * layout, but a change to the header format that would break this
2512 * would also break all streams encoded in the previous format.
2516 * Write MD5 signature
2519 const unsigned md5_offset =
2520 FLAC__STREAM_METADATA_HEADER_LENGTH +
2522 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2523 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2524 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2525 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2526 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2527 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2528 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2529 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2532 if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
2533 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2534 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2537 if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2538 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2544 * Write total samples
2547 const unsigned total_samples_byte_offset =
2548 FLAC__STREAM_METADATA_HEADER_LENGTH +
2550 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2551 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2552 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2553 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2554 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2555 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2556 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2560 b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
2561 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2562 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2563 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2564 b[4] = (FLAC__byte)(samples & 0xFF);
2565 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) {
2566 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2567 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2570 if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2571 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2577 * Write min/max framesize
2580 const unsigned min_framesize_offset =
2581 FLAC__STREAM_METADATA_HEADER_LENGTH +
2583 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2584 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2587 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2588 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2589 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2590 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2591 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2592 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2593 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) {
2594 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2595 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2598 if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2599 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2607 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2610 FLAC__format_seektable_sort(encoder->private_->seek_table);
2612 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2614 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) {
2615 if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
2616 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2620 for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
2623 xx = encoder->private_->seek_table->points[i].sample_number;
2624 b[7] = (FLAC__byte)xx; xx >>= 8;
2625 b[6] = (FLAC__byte)xx; xx >>= 8;
2626 b[5] = (FLAC__byte)xx; xx >>= 8;
2627 b[4] = (FLAC__byte)xx; xx >>= 8;
2628 b[3] = (FLAC__byte)xx; xx >>= 8;
2629 b[2] = (FLAC__byte)xx; xx >>= 8;
2630 b[1] = (FLAC__byte)xx; xx >>= 8;
2631 b[0] = (FLAC__byte)xx; xx >>= 8;
2632 xx = encoder->private_->seek_table->points[i].stream_offset;
2633 b[15] = (FLAC__byte)xx; xx >>= 8;
2634 b[14] = (FLAC__byte)xx; xx >>= 8;
2635 b[13] = (FLAC__byte)xx; xx >>= 8;
2636 b[12] = (FLAC__byte)xx; xx >>= 8;
2637 b[11] = (FLAC__byte)xx; xx >>= 8;
2638 b[10] = (FLAC__byte)xx; xx >>= 8;
2639 b[9] = (FLAC__byte)xx; xx >>= 8;
2640 b[8] = (FLAC__byte)xx; xx >>= 8;
2641 x = encoder->private_->seek_table->points[i].frame_samples;
2642 b[17] = (FLAC__byte)x; x >>= 8;
2643 b[16] = (FLAC__byte)x; x >>= 8;
2644 if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
2645 encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
2653 /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
2654 void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
2656 /* the # of bytes in the 1st packet that precede the STREAMINFO */
2657 static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
2658 FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
2659 FLAC__OGG_MAPPING_MAGIC_LENGTH +
2660 FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
2661 FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
2662 FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
2663 FLAC__STREAM_SYNC_LENGTH
2665 FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
2666 const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
2667 const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
2668 const unsigned min_framesize = metadata->data.stream_info.min_framesize;
2669 const unsigned max_framesize = metadata->data.stream_info.max_framesize;
2672 FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
2673 FLAC__ASSERT(0 != encoder->private_->seek_callback);
2675 /* Pre-check that client supports seeking, since we don't want the
2676 * ogg_helper code to ever have to deal with this condition.
2678 if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
2681 /* All this is based on intimate knowledge of the stream header
2682 * layout, but a change to the header format that would break this
2683 * would also break all streams encoded in the previous format.
2687 ** Write STREAMINFO stats
2689 simple_ogg_page__init(&page);
2690 if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2691 simple_ogg_page__clear(&page);
2692 return; /* state already set */
2696 * Write MD5 signature
2699 const unsigned md5_offset =
2700 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2701 FLAC__STREAM_METADATA_HEADER_LENGTH +
2703 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2704 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2705 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2706 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2707 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2708 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2709 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
2710 FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
2713 if(md5_offset + 16 > (unsigned)page.body_len) {
2714 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2715 simple_ogg_page__clear(&page);
2718 memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
2722 * Write total samples
2725 const unsigned total_samples_byte_offset =
2726 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2727 FLAC__STREAM_METADATA_HEADER_LENGTH +
2729 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2730 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
2731 FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
2732 FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
2733 FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
2734 FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
2735 FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
2739 if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
2740 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2741 simple_ogg_page__clear(&page);
2744 b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
2745 b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
2746 b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
2747 b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
2748 b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
2749 b[4] = (FLAC__byte)(samples & 0xFF);
2750 memcpy(page.body + total_samples_byte_offset, b, 5);
2754 * Write min/max framesize
2757 const unsigned min_framesize_offset =
2758 FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
2759 FLAC__STREAM_METADATA_HEADER_LENGTH +
2761 FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
2762 FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
2765 if(min_framesize_offset + 6 > (unsigned)page.body_len) {
2766 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2767 simple_ogg_page__clear(&page);
2770 b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
2771 b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
2772 b[2] = (FLAC__byte)(min_framesize & 0xFF);
2773 b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
2774 b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
2775 b[5] = (FLAC__byte)(max_framesize & 0xFF);
2776 memcpy(page.body + min_framesize_offset, b, 6);
2778 if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2779 simple_ogg_page__clear(&page);
2780 return; /* state already set */
2782 simple_ogg_page__clear(&page);
2787 if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
2791 FLAC__format_seektable_sort(encoder->private_->seek_table);
2793 FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
2795 simple_ogg_page__init(&page);
2796 if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
2797 simple_ogg_page__clear(&page);
2798 return; /* state already set */
2801 if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
2802 encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
2803 simple_ogg_page__clear(&page);
2807 for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
2810 xx = encoder->private_->seek_table->points[i].sample_number;
2811 b[7] = (FLAC__byte)xx; xx >>= 8;
2812 b[6] = (FLAC__byte)xx; xx >>= 8;
2813 b[5] = (FLAC__byte)xx; xx >>= 8;
2814 b[4] = (FLAC__byte)xx; xx >>= 8;
2815 b[3] = (FLAC__byte)xx; xx >>= 8;
2816 b[2] = (FLAC__byte)xx; xx >>= 8;
2817 b[1] = (FLAC__byte)xx; xx >>= 8;
2818 b[0] = (FLAC__byte)xx; xx >>= 8;
2819 xx = encoder->private_->seek_table->points[i].stream_offset;
2820 b[15] = (FLAC__byte)xx; xx >>= 8;
2821 b[14] = (FLAC__byte)xx; xx >>= 8;
2822 b[13] = (FLAC__byte)xx; xx >>= 8;
2823 b[12] = (FLAC__byte)xx; xx >>= 8;
2824 b[11] = (FLAC__byte)xx; xx >>= 8;
2825 b[10] = (FLAC__byte)xx; xx >>= 8;
2826 b[9] = (FLAC__byte)xx; xx >>= 8;
2827 b[8] = (FLAC__byte)xx; xx >>= 8;
2828 x = encoder->private_->seek_table->points[i].frame_samples;
2829 b[17] = (FLAC__byte)x; x >>= 8;
2830 b[16] = (FLAC__byte)x; x >>= 8;
2834 if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
2835 simple_ogg_page__clear(&page);
2836 return; /* state already set */
2838 simple_ogg_page__clear(&page);
2843 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
2846 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
2849 * Accumulate raw signal to the MD5 signature
2851 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)) {
2852 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2857 * Process the frame header and subframes into the frame bitbuffer
2859 if(!process_subframes_(encoder, is_fractional_block)) {
2860 /* the above function sets the state for us in case of an error */
2865 * Zero-pad the frame to a byte_boundary
2867 if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
2868 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2873 * CRC-16 the whole thing
2875 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
2877 !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
2878 !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
2880 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
2887 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
2888 /* the above function sets the state for us in case of an error */
2893 * Get ready for the next frame
2895 encoder->private_->current_sample_number = 0;
2896 encoder->private_->current_frame_number++;
2897 encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
2902 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
2904 FLAC__FrameHeader frame_header;
2905 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
2906 FLAC__bool do_independent, do_mid_side;
2909 * Calculate the min,max Rice partition orders
2911 if(is_fractional_block) {
2912 max_partition_order = 0;
2915 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
2916 max_partition_order = flac_min(max_partition_order, encoder->protected_->max_residual_partition_order);
2918 min_partition_order = flac_min(min_partition_order, max_partition_order);
2923 frame_header.blocksize = encoder->protected_->blocksize;
2924 frame_header.sample_rate = encoder->protected_->sample_rate;
2925 frame_header.channels = encoder->protected_->channels;
2926 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
2927 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
2928 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
2929 frame_header.number.frame_number = encoder->private_->current_frame_number;
2932 * Figure out what channel assignments to try
2934 if(encoder->protected_->do_mid_side_stereo) {
2935 if(encoder->protected_->loose_mid_side_stereo) {
2936 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
2937 do_independent = true;
2941 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
2942 do_mid_side = !do_independent;
2946 do_independent = true;
2951 do_independent = true;
2952 do_mid_side = false;
2955 FLAC__ASSERT(do_independent || do_mid_side);
2958 * Check for wasted bits; set effective bps for each subframe
2960 if(do_independent) {
2961 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2962 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
2963 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
2964 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
2968 FLAC__ASSERT(encoder->protected_->channels == 2);
2969 for(channel = 0; channel < 2; channel++) {
2970 const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
2971 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
2972 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
2977 * First do a normal encoding pass of each independent channel
2979 if(do_independent) {
2980 for(channel = 0; channel < encoder->protected_->channels; channel++) {
2984 min_partition_order,
2985 max_partition_order,
2987 encoder->private_->subframe_bps[channel],
2988 encoder->private_->integer_signal[channel],
2989 encoder->private_->subframe_workspace_ptr[channel],
2990 encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
2991 encoder->private_->residual_workspace[channel],
2992 encoder->private_->best_subframe+channel,
2993 encoder->private_->best_subframe_bits+channel
3001 * Now do mid and side channels if requested
3004 FLAC__ASSERT(encoder->protected_->channels == 2);
3006 for(channel = 0; channel < 2; channel++) {
3010 min_partition_order,
3011 max_partition_order,
3013 encoder->private_->subframe_bps_mid_side[channel],
3014 encoder->private_->integer_signal_mid_side[channel],
3015 encoder->private_->subframe_workspace_ptr_mid_side[channel],
3016 encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
3017 encoder->private_->residual_workspace_mid_side[channel],
3018 encoder->private_->best_subframe_mid_side+channel,
3019 encoder->private_->best_subframe_bits_mid_side+channel
3027 * Compose the frame bitbuffer
3030 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
3031 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
3032 FLAC__ChannelAssignment channel_assignment;
3034 FLAC__ASSERT(encoder->protected_->channels == 2);
3036 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
3037 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
3040 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
3044 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
3045 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
3046 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
3047 FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
3048 FLAC__ASSERT(do_independent && do_mid_side);
3050 /* We have to figure out which channel assignent results in the smallest frame */
3051 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
3052 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
3053 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
3054 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
3056 channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
3057 min_bits = bits[channel_assignment];
3058 for(ca = 1; ca <= 3; ca++) {
3059 if(bits[ca] < min_bits) {
3060 min_bits = bits[ca];
3061 channel_assignment = (FLAC__ChannelAssignment)ca;
3066 frame_header.channel_assignment = channel_assignment;
3068 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3069 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3073 switch(channel_assignment) {
3074 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3075 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3076 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3078 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3079 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
3080 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3082 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3083 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3084 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
3086 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3087 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
3088 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
3094 switch(channel_assignment) {
3095 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
3096 left_bps = encoder->private_->subframe_bps [0];
3097 right_bps = encoder->private_->subframe_bps [1];
3099 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
3100 left_bps = encoder->private_->subframe_bps [0];
3101 right_bps = encoder->private_->subframe_bps_mid_side[1];
3103 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
3104 left_bps = encoder->private_->subframe_bps_mid_side[1];
3105 right_bps = encoder->private_->subframe_bps [1];
3107 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
3108 left_bps = encoder->private_->subframe_bps_mid_side[0];
3109 right_bps = encoder->private_->subframe_bps_mid_side[1];
3115 /* note that encoder_add_subframe_ sets the state for us in case of an error */
3116 if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
3118 if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
3122 if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
3123 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3127 for(channel = 0; channel < encoder->protected_->channels; channel++) {
3128 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)) {
3129 /* the above function sets the state for us in case of an error */
3135 if(encoder->protected_->loose_mid_side_stereo) {
3136 encoder->private_->loose_mid_side_stereo_frame_count++;
3137 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
3138 encoder->private_->loose_mid_side_stereo_frame_count = 0;
3141 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
3146 FLAC__bool process_subframe_(
3147 FLAC__StreamEncoder *encoder,
3148 unsigned min_partition_order,
3149 unsigned max_partition_order,
3150 const FLAC__FrameHeader *frame_header,
3151 unsigned subframe_bps,
3152 const FLAC__int32 integer_signal[],
3153 FLAC__Subframe *subframe[2],
3154 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
3155 FLAC__int32 *residual[2],
3156 unsigned *best_subframe,
3160 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3161 FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3163 FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
3165 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3166 FLAC__double lpc_residual_bits_per_sample;
3167 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 */
3168 FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
3169 unsigned min_lpc_order, max_lpc_order, lpc_order;
3170 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
3172 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
3173 unsigned rice_parameter;
3174 unsigned _candidate_bits, _best_bits;
3175 unsigned _best_subframe;
3176 /* only use RICE2 partitions if stream bps > 16 */
3177 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;
3179 FLAC__ASSERT(frame_header->blocksize > 0);
3181 /* verbatim subframe is the baseline against which we measure other compressed subframes */
3183 if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
3184 _best_bits = UINT_MAX;
3186 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3188 if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
3189 unsigned signal_is_constant = false;
3190 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);
3191 /* check for constant subframe */
3193 !encoder->private_->disable_constant_subframes &&
3194 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3195 fixed_residual_bits_per_sample[1] == 0.0
3197 fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
3200 /* the above means it's possible all samples are the same value; now double-check it: */
3202 signal_is_constant = true;
3203 for(i = 1; i < frame_header->blocksize; i++) {
3204 if(integer_signal[0] != integer_signal[i]) {
3205 signal_is_constant = false;
3210 if(signal_is_constant) {
3211 _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
3212 if(_candidate_bits < _best_bits) {
3213 _best_subframe = !_best_subframe;
3214 _best_bits = _candidate_bits;
3218 if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
3220 if(encoder->protected_->do_exhaustive_model_search) {
3221 min_fixed_order = 0;
3222 max_fixed_order = FLAC__MAX_FIXED_ORDER;
3225 min_fixed_order = max_fixed_order = guess_fixed_order;
3227 if(max_fixed_order >= frame_header->blocksize)
3228 max_fixed_order = frame_header->blocksize - 1;
3229 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
3230 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3231 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
3232 continue; /* don't even try */
3233 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 */
3235 if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
3236 continue; /* don't even try */
3237 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 */
3239 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3240 if(rice_parameter >= rice_parameter_limit) {
3241 #ifdef DEBUG_VERBOSE
3242 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, rice_parameter_limit - 1);
3244 rice_parameter = rice_parameter_limit - 1;
3247 evaluate_fixed_subframe_(
3250 residual[!_best_subframe],
3251 encoder->private_->abs_residual_partition_sums,
3252 encoder->private_->raw_bits_per_partition,
3253 frame_header->blocksize,
3257 rice_parameter_limit,
3258 min_partition_order,
3259 max_partition_order,
3260 encoder->protected_->do_escape_coding,
3261 encoder->protected_->rice_parameter_search_dist,
3262 subframe[!_best_subframe],
3263 partitioned_rice_contents[!_best_subframe]
3265 if(_candidate_bits < _best_bits) {
3266 _best_subframe = !_best_subframe;
3267 _best_bits = _candidate_bits;
3272 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3274 if(encoder->protected_->max_lpc_order > 0) {
3275 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
3276 max_lpc_order = frame_header->blocksize-1;
3278 max_lpc_order = encoder->protected_->max_lpc_order;
3279 if(max_lpc_order > 0) {
3281 for (a = 0; a < encoder->protected_->num_apodizations; a++) {
3282 FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
3283 encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
3284 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
3285 if(autoc[0] != 0.0) {
3286 FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
3287 if(encoder->protected_->do_exhaustive_model_search) {
3291 const unsigned guess_lpc_order =
3292 FLAC__lpc_compute_best_order(
3295 frame_header->blocksize,
3297 encoder->protected_->do_qlp_coeff_prec_search?
3298 FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
3299 encoder->protected_->qlp_coeff_precision
3302 min_lpc_order = max_lpc_order = guess_lpc_order;
3304 if(max_lpc_order >= frame_header->blocksize)
3305 max_lpc_order = frame_header->blocksize - 1;
3306 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
3307 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
3308 if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
3309 continue; /* don't even try */
3310 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
3311 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
3312 if(rice_parameter >= rice_parameter_limit) {
3313 #ifdef DEBUG_VERBOSE
3314 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, rice_parameter_limit - 1);
3316 rice_parameter = rice_parameter_limit - 1;
3318 if(encoder->protected_->do_qlp_coeff_prec_search) {
3319 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
3320 /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
3321 if(subframe_bps <= 17) {
3322 max_qlp_coeff_precision = flac_min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
3323 max_qlp_coeff_precision = flac_max(max_qlp_coeff_precision, min_qlp_coeff_precision);
3326 max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
3329 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
3331 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
3333 evaluate_lpc_subframe_(
3336 residual[!_best_subframe],
3337 encoder->private_->abs_residual_partition_sums,
3338 encoder->private_->raw_bits_per_partition,
3339 encoder->private_->lp_coeff[lpc_order-1],
3340 frame_header->blocksize,
3343 qlp_coeff_precision,
3345 rice_parameter_limit,
3346 min_partition_order,
3347 max_partition_order,
3348 encoder->protected_->do_escape_coding,
3349 encoder->protected_->rice_parameter_search_dist,
3350 subframe[!_best_subframe],
3351 partitioned_rice_contents[!_best_subframe]
3353 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
3354 if(_candidate_bits < _best_bits) {
3355 _best_subframe = !_best_subframe;
3356 _best_bits = _candidate_bits;
3365 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
3369 /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
3370 if(_best_bits == UINT_MAX) {
3371 FLAC__ASSERT(_best_subframe == 0);
3372 _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
3375 *best_subframe = _best_subframe;
3376 *best_bits = _best_bits;
3381 FLAC__bool add_subframe_(
3382 FLAC__StreamEncoder *encoder,
3384 unsigned subframe_bps,
3385 const FLAC__Subframe *subframe,
3386 FLAC__BitWriter *frame
3389 switch(subframe->type) {
3390 case FLAC__SUBFRAME_TYPE_CONSTANT:
3391 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
3392 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3396 case FLAC__SUBFRAME_TYPE_FIXED:
3397 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
3398 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3402 case FLAC__SUBFRAME_TYPE_LPC:
3403 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
3404 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3408 case FLAC__SUBFRAME_TYPE_VERBATIM:
3409 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
3410 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
3421 #define SPOTCHECK_ESTIMATE 0
3422 #if SPOTCHECK_ESTIMATE
3423 static void spotcheck_subframe_estimate_(
3424 FLAC__StreamEncoder *encoder,
3426 unsigned subframe_bps,
3427 const FLAC__Subframe *subframe,
3432 FLAC__BitWriter *frame = FLAC__bitwriter_new();
3434 fprintf(stderr, "EST: can't allocate frame\n");
3437 if(!FLAC__bitwriter_init(frame)) {
3438 fprintf(stderr, "EST: can't init frame\n");
3441 ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
3444 const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
3445 if(estimate != actual)
3446 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);
3448 FLAC__bitwriter_delete(frame);
3452 unsigned evaluate_constant_subframe_(
3453 FLAC__StreamEncoder *encoder,
3454 const FLAC__int32 signal,
3456 unsigned subframe_bps,
3457 FLAC__Subframe *subframe
3461 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
3462 subframe->data.constant.value = signal;
3464 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
3466 #if SPOTCHECK_ESTIMATE
3467 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3469 (void)encoder, (void)blocksize;
3475 unsigned evaluate_fixed_subframe_(
3476 FLAC__StreamEncoder *encoder,
3477 const FLAC__int32 signal[],
3478 FLAC__int32 residual[],
3479 FLAC__uint64 abs_residual_partition_sums[],
3480 unsigned raw_bits_per_partition[],
3482 unsigned subframe_bps,
3484 unsigned rice_parameter,
3485 unsigned rice_parameter_limit,
3486 unsigned min_partition_order,
3487 unsigned max_partition_order,
3488 FLAC__bool do_escape_coding,
3489 unsigned rice_parameter_search_dist,
3490 FLAC__Subframe *subframe,
3491 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3494 unsigned i, residual_bits, estimate;
3495 const unsigned residual_samples = blocksize - order;
3497 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
3499 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
3501 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3502 subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3503 subframe->data.fixed.residual = residual;
3506 find_best_partition_order_(
3509 abs_residual_partition_sums,
3510 raw_bits_per_partition,
3514 rice_parameter_limit,
3515 min_partition_order,
3516 max_partition_order,
3519 rice_parameter_search_dist,
3520 &subframe->data.fixed.entropy_coding_method
3523 subframe->data.fixed.order = order;
3524 for(i = 0; i < order; i++)
3525 subframe->data.fixed.warmup[i] = signal[i];
3527 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
3529 #if SPOTCHECK_ESTIMATE
3530 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3536 #ifndef FLAC__INTEGER_ONLY_LIBRARY
3537 unsigned evaluate_lpc_subframe_(
3538 FLAC__StreamEncoder *encoder,
3539 const FLAC__int32 signal[],
3540 FLAC__int32 residual[],
3541 FLAC__uint64 abs_residual_partition_sums[],
3542 unsigned raw_bits_per_partition[],
3543 const FLAC__real lp_coeff[],
3545 unsigned subframe_bps,
3547 unsigned qlp_coeff_precision,
3548 unsigned rice_parameter,
3549 unsigned rice_parameter_limit,
3550 unsigned min_partition_order,
3551 unsigned max_partition_order,
3552 FLAC__bool do_escape_coding,
3553 unsigned rice_parameter_search_dist,
3554 FLAC__Subframe *subframe,
3555 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
3558 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
3559 unsigned i, residual_bits, estimate;
3560 int quantization, ret;
3561 const unsigned residual_samples = blocksize - order;
3563 /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
3564 if(subframe_bps <= 16) {
3565 FLAC__ASSERT(order > 0);
3566 FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
3567 qlp_coeff_precision = flac_min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
3570 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
3572 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
3574 if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
3575 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
3576 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3578 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3580 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
3582 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
3584 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
3585 subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
3586 subframe->data.lpc.residual = residual;
3589 find_best_partition_order_(
3592 abs_residual_partition_sums,
3593 raw_bits_per_partition,
3597 rice_parameter_limit,
3598 min_partition_order,
3599 max_partition_order,
3602 rice_parameter_search_dist,
3603 &subframe->data.lpc.entropy_coding_method
3606 subframe->data.lpc.order = order;
3607 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
3608 subframe->data.lpc.quantization_level = quantization;
3609 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
3610 for(i = 0; i < order; i++)
3611 subframe->data.lpc.warmup[i] = signal[i];
3613 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;
3615 #if SPOTCHECK_ESTIMATE
3616 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3623 unsigned evaluate_verbatim_subframe_(
3624 FLAC__StreamEncoder *encoder,
3625 const FLAC__int32 signal[],
3627 unsigned subframe_bps,
3628 FLAC__Subframe *subframe
3633 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
3635 subframe->data.verbatim.data = signal;
3637 estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
3639 #if SPOTCHECK_ESTIMATE
3640 spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
3648 unsigned find_best_partition_order_(
3649 FLAC__StreamEncoderPrivate *private_,
3650 const FLAC__int32 residual[],
3651 FLAC__uint64 abs_residual_partition_sums[],
3652 unsigned raw_bits_per_partition[],
3653 unsigned residual_samples,
3654 unsigned predictor_order,
3655 unsigned rice_parameter,
3656 unsigned rice_parameter_limit,
3657 unsigned min_partition_order,
3658 unsigned max_partition_order,
3660 FLAC__bool do_escape_coding,
3661 unsigned rice_parameter_search_dist,
3662 FLAC__EntropyCodingMethod *best_ecm
3665 unsigned residual_bits, best_residual_bits = 0;
3666 unsigned best_parameters_index = 0;
3667 unsigned best_partition_order = 0;
3668 const unsigned blocksize = residual_samples + predictor_order;
3670 max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
3671 min_partition_order = flac_min(min_partition_order, max_partition_order);
3673 precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps);
3675 if(do_escape_coding)
3676 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
3679 int partition_order;
3682 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
3684 set_partitioned_rice_(
3685 #ifdef EXACT_RICE_BITS_CALCULATION
3688 abs_residual_partition_sums+sum,
3689 raw_bits_per_partition+sum,
3693 rice_parameter_limit,
3694 rice_parameter_search_dist,
3695 (unsigned)partition_order,
3697 &private_->partitioned_rice_contents_extra[!best_parameters_index],
3702 FLAC__ASSERT(best_residual_bits != 0);
3705 sum += 1u << partition_order;
3706 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
3707 best_residual_bits = residual_bits;
3708 best_parameters_index = !best_parameters_index;
3709 best_partition_order = partition_order;
3714 best_ecm->data.partitioned_rice.order = best_partition_order;
3718 * We are allowed to de-const the pointer based on our special
3719 * knowledge; it is const to the outside world.
3721 FLAC__EntropyCodingMethod_PartitionedRiceContents* prc = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_ecm->data.partitioned_rice.contents;
3724 /* save best parameters and raw_bits */
3725 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(prc, flac_max(6u, best_partition_order));
3726 memcpy(prc->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partition_order)));
3727 if(do_escape_coding)
3728 memcpy(prc->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partition_order)));
3730 * Now need to check if the type should be changed to
3731 * FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 based on the
3732 * size of the rice parameters.
3734 for(partition = 0; partition < (1u<<best_partition_order); partition++) {
3735 if(prc->parameters[partition] >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
3736 best_ecm->type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2;
3742 return best_residual_bits;
3745 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3746 extern void precompute_partition_info_sums_32bit_asm_ia32_(
3747 const FLAC__int32 residual[],
3748 FLAC__uint64 abs_residual_partition_sums[],
3750 unsigned predictor_order,
3751 unsigned min_partition_order,
3752 unsigned max_partition_order
3756 void precompute_partition_info_sums_(
3757 const FLAC__int32 residual[],
3758 FLAC__uint64 abs_residual_partition_sums[],
3759 unsigned residual_samples,
3760 unsigned predictor_order,
3761 unsigned min_partition_order,
3762 unsigned max_partition_order,
3766 const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order;
3767 unsigned partitions = 1u << max_partition_order;
3769 FLAC__ASSERT(default_partition_samples > predictor_order);
3771 #if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
3772 /* slightly pessimistic but still catches all common cases */
3773 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3774 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3775 precompute_partition_info_sums_32bit_asm_ia32_(residual, abs_residual_partition_sums, residual_samples + predictor_order, predictor_order, min_partition_order, max_partition_order);
3780 /* first do max_partition_order */
3782 unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order);
3783 /* slightly pessimistic but still catches all common cases */
3784 /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
3785 if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
3786 FLAC__uint32 abs_residual_partition_sum;
3788 for(partition = residual_sample = 0; partition < partitions; partition++) {
3789 end += default_partition_samples;
3790 abs_residual_partition_sum = 0;
3791 for( ; residual_sample < end; residual_sample++)
3792 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3793 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3796 else { /* have to pessimistically use 64 bits for accumulator */
3797 FLAC__uint64 abs_residual_partition_sum;
3799 for(partition = residual_sample = 0; partition < partitions; partition++) {
3800 end += default_partition_samples;
3801 abs_residual_partition_sum = 0;
3802 for( ; residual_sample < end; residual_sample++)
3803 abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
3804 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
3809 /* now merge partitions for lower orders */
3811 unsigned from_partition = 0, to_partition = partitions;
3812 int partition_order;
3813 for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) {
3816 for(i = 0; i < partitions; i++) {
3817 abs_residual_partition_sums[to_partition++] =
3818 abs_residual_partition_sums[from_partition ] +
3819 abs_residual_partition_sums[from_partition+1];
3820 from_partition += 2;
3826 void precompute_partition_info_escapes_(
3827 const FLAC__int32 residual[],
3828 unsigned raw_bits_per_partition[],
3829 unsigned residual_samples,
3830 unsigned predictor_order,
3831 unsigned min_partition_order,
3832 unsigned max_partition_order
3835 int partition_order;
3836 unsigned from_partition, to_partition = 0;
3837 const unsigned blocksize = residual_samples + predictor_order;
3839 /* first do max_partition_order */
3840 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
3843 unsigned partition, partition_sample, partition_samples, residual_sample;
3844 const unsigned partitions = 1u << partition_order;
3845 const unsigned default_partition_samples = blocksize >> partition_order;
3847 FLAC__ASSERT(default_partition_samples > predictor_order);
3849 for(partition = residual_sample = 0; partition < partitions; partition++) {
3850 partition_samples = default_partition_samples;
3852 partition_samples -= predictor_order;
3854 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
3855 r = residual[residual_sample++];
3856 /* OPT: maybe faster: rmax |= r ^ (r>>31) */
3862 /* now we know all residual values are in the range [-rmax-1,rmax] */
3863 raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1;
3865 to_partition = partitions;
3866 break; /*@@@ yuck, should remove the 'for' loop instead */
3869 /* now merge partitions for lower orders */
3870 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
3873 const unsigned partitions = 1u << partition_order;
3874 for(i = 0; i < partitions; i++) {
3875 m = raw_bits_per_partition[from_partition];
3877 raw_bits_per_partition[to_partition] = flac_max(m, raw_bits_per_partition[from_partition]);
3884 #ifdef EXACT_RICE_BITS_CALCULATION
3885 static inline unsigned count_rice_bits_in_partition_(
3886 const unsigned rice_parameter,
3887 const unsigned partition_samples,
3888 const FLAC__int32 *residual
3891 unsigned i, partition_bits =
3892 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 */
3893 (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
3895 for(i = 0; i < partition_samples; i++)
3896 partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
3897 return partition_bits;
3900 static inline unsigned count_rice_bits_in_partition_(
3901 const unsigned rice_parameter,
3902 const unsigned partition_samples,
3903 const FLAC__uint64 abs_residual_partition_sum
3907 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 */
3908 (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
3911 (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
3912 : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
3914 - (partition_samples >> 1)
3915 /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
3916 * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1)
3917 * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
3918 * So the subtraction term tries to guess how many extra bits were contributed.
3919 * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
3925 FLAC__bool set_partitioned_rice_(
3926 #ifdef EXACT_RICE_BITS_CALCULATION
3927 const FLAC__int32 residual[],
3929 const FLAC__uint64 abs_residual_partition_sums[],
3930 const unsigned raw_bits_per_partition[],
3931 const unsigned residual_samples,
3932 const unsigned predictor_order,
3933 const unsigned suggested_rice_parameter,
3934 const unsigned rice_parameter_limit,
3935 const unsigned rice_parameter_search_dist,
3936 const unsigned partition_order,
3937 const FLAC__bool search_for_escapes,
3938 FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
3942 unsigned rice_parameter, partition_bits;
3943 unsigned best_partition_bits, best_rice_parameter = 0;
3944 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
3945 unsigned *parameters, *raw_bits;
3946 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3947 unsigned min_rice_parameter, max_rice_parameter;
3949 (void)rice_parameter_search_dist;
3952 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
3953 FLAC__ASSERT(rice_parameter_limit <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
3955 FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, flac_max(6u, partition_order));
3956 parameters = partitioned_rice_contents->parameters;
3957 raw_bits = partitioned_rice_contents->raw_bits;
3959 if(partition_order == 0) {
3960 best_partition_bits = (unsigned)(-1);
3961 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3962 if(rice_parameter_search_dist) {
3963 if(suggested_rice_parameter < rice_parameter_search_dist)
3964 min_rice_parameter = 0;
3966 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
3967 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
3968 if(max_rice_parameter >= rice_parameter_limit) {
3969 #ifdef DEBUG_VERBOSE
3970 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, rice_parameter_limit - 1);
3972 max_rice_parameter = rice_parameter_limit - 1;
3976 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
3978 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
3980 rice_parameter = suggested_rice_parameter;
3982 #ifdef EXACT_RICE_BITS_CALCULATION
3983 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual);
3985 partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]);
3987 if(partition_bits < best_partition_bits) {
3988 best_rice_parameter = rice_parameter;
3989 best_partition_bits = partition_bits;
3991 #ifdef ENABLE_RICE_PARAMETER_SEARCH
3994 if(search_for_escapes) {
3995 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;
3996 if(partition_bits <= best_partition_bits) {
3997 raw_bits[0] = raw_bits_per_partition[0];
3998 best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
3999 best_partition_bits = partition_bits;
4004 parameters[0] = best_rice_parameter;
4005 bits_ += best_partition_bits;
4008 unsigned partition, residual_sample;
4009 unsigned partition_samples;
4010 FLAC__uint64 mean, k;
4011 const unsigned partitions = 1u << partition_order;
4012 for(partition = residual_sample = 0; partition < partitions; partition++) {
4013 partition_samples = (residual_samples+predictor_order) >> partition_order;
4014 if(partition == 0) {
4015 if(partition_samples <= predictor_order)
4018 partition_samples -= predictor_order;
4020 mean = abs_residual_partition_sums[partition];
4021 /* we are basically calculating the size in bits of the
4022 * average residual magnitude in the partition:
4023 * rice_parameter = floor(log2(mean/partition_samples))
4024 * 'mean' is not a good name for the variable, it is
4025 * actually the sum of magnitudes of all residual values
4026 * in the partition, so the actual mean is
4027 * mean/partition_samples
4029 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
4031 if(rice_parameter >= rice_parameter_limit) {
4032 #ifdef DEBUG_VERBOSE
4033 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, rice_parameter_limit - 1);
4035 rice_parameter = rice_parameter_limit - 1;
4038 best_partition_bits = (unsigned)(-1);
4039 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4040 if(rice_parameter_search_dist) {
4041 if(rice_parameter < rice_parameter_search_dist)
4042 min_rice_parameter = 0;
4044 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
4045 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
4046 if(max_rice_parameter >= rice_parameter_limit) {
4047 #ifdef DEBUG_VERBOSE
4048 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, rice_parameter_limit - 1);
4050 max_rice_parameter = rice_parameter_limit - 1;
4054 min_rice_parameter = max_rice_parameter = rice_parameter;
4056 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
4058 #ifdef EXACT_RICE_BITS_CALCULATION
4059 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample);
4061 partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]);
4063 if(partition_bits < best_partition_bits) {
4064 best_rice_parameter = rice_parameter;
4065 best_partition_bits = partition_bits;
4067 #ifdef ENABLE_RICE_PARAMETER_SEARCH
4070 if(search_for_escapes) {
4071 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;
4072 if(partition_bits <= best_partition_bits) {
4073 raw_bits[partition] = raw_bits_per_partition[partition];
4074 best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
4075 best_partition_bits = partition_bits;
4078 raw_bits[partition] = 0;
4080 parameters[partition] = best_rice_parameter;
4081 bits_ += best_partition_bits;
4082 residual_sample += partition_samples;
4090 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
4095 for(i = 0; i < samples && !(x&1); i++)
4102 for(shift = 0; !(x&1); shift++)
4107 for(i = 0; i < samples; i++)
4108 signal[i] >>= shift;
4114 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4118 for(channel = 0; channel < channels; channel++)
4119 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
4121 fifo->tail += wide_samples;
4123 FLAC__ASSERT(fifo->tail <= fifo->size);
4126 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
4129 unsigned sample, wide_sample;
4130 unsigned tail = fifo->tail;
4132 sample = input_offset * channels;
4133 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
4134 for(channel = 0; channel < channels; channel++)
4135 fifo->data[channel][tail] = input[sample++];
4140 FLAC__ASSERT(fifo->tail <= fifo->size);
4143 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4145 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4146 const size_t encoded_bytes = encoder->private_->verify.output.bytes;
4149 if(encoder->private_->verify.needs_magic_hack) {
4150 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
4151 *bytes = FLAC__STREAM_SYNC_LENGTH;
4152 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
4153 encoder->private_->verify.needs_magic_hack = false;
4156 if(encoded_bytes == 0) {
4158 * If we get here, a FIFO underflow has occurred,
4159 * which means there is a bug somewhere.
4162 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
4164 else if(encoded_bytes < *bytes)
4165 *bytes = encoded_bytes;
4166 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
4167 encoder->private_->verify.output.data += *bytes;
4168 encoder->private_->verify.output.bytes -= *bytes;
4171 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
4174 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
4176 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
4178 const unsigned channels = frame->header.channels;
4179 const unsigned blocksize = frame->header.blocksize;
4180 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
4184 for(channel = 0; channel < channels; channel++) {
4185 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
4186 unsigned i, sample = 0;
4187 FLAC__int32 expect = 0, got = 0;
4189 for(i = 0; i < blocksize; i++) {
4190 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
4192 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
4193 got = (FLAC__int32)buffer[channel][i];
4197 FLAC__ASSERT(i < blocksize);
4198 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
4199 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
4200 encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
4201 encoder->private_->verify.error_stats.channel = channel;
4202 encoder->private_->verify.error_stats.sample = sample;
4203 encoder->private_->verify.error_stats.expected = expect;
4204 encoder->private_->verify.error_stats.got = got;
4205 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
4206 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
4209 /* dequeue the frame from the fifo */
4210 encoder->private_->verify.input_fifo.tail -= blocksize;
4211 FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
4212 for(channel = 0; channel < channels; channel++)
4213 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]));
4214 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
4217 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
4219 (void)decoder, (void)metadata, (void)client_data;
4222 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
4224 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
4225 (void)decoder, (void)status;
4226 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
4229 FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
4233 *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
4235 if (feof(encoder->private_->file))
4236 return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
4237 else if (ferror(encoder->private_->file))
4238 return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
4240 return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
4243 FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
4247 if(fseeko(encoder->private_->file, (FLAC__off_t)absolute_byte_offset, SEEK_SET) < 0)
4248 return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
4250 return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
4253 FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
4259 offset = ftello(encoder->private_->file);
4262 return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
4265 *absolute_byte_offset = (FLAC__uint64)offset;
4266 return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
4270 #ifdef FLAC__VALGRIND_TESTING
4271 static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
4273 size_t ret = fwrite(ptr, size, nmemb, stream);
4279 #define local__fwrite fwrite
4282 FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
4284 (void)client_data, (void)current_frame;
4286 if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
4287 FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
4289 /* We would like to be able to use 'samples > 0' in the
4290 * clause here but currently because of the nature of our
4291 * Ogg writing implementation, 'samples' is always 0 (see
4292 * ogg_encoder_aspect.c). The downside is extra progress
4295 encoder->private_->is_ogg? true :
4300 /* NOTE: We have to add +bytes, +samples, and +1 to the stats
4301 * because at this point in the callback chain, the stats
4302 * have not been updated. Only after we return and control
4303 * gets back to write_frame_() are the stats updated
4305 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);
4307 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
4310 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
4314 * This will forcibly set stdout to binary mode (for OSes that require it)
4316 FILE *get_binary_stdout_(void)
4318 /* if something breaks here it is probably due to the presence or
4319 * absence of an underscore before the identifiers 'setmode',
4320 * 'fileno', and/or 'O_BINARY'; check your system header files.
4322 #if defined _MSC_VER || defined __MINGW32__
4323 _setmode(_fileno(stdout), _O_BINARY);
4324 #elif defined __CYGWIN__
4325 /* almost certainly not needed for any modern Cygwin, but let's be safe... */
4326 setmode(_fileno(stdout), _O_BINARY);
4327 #elif defined __EMX__
4328 setmode(fileno(stdout), O_BINARY);