/
stream_encoder.c
4578 lines (4173 loc) · 185 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
/* libFLAC - Free Lossless Audio Codec library
* Copyright (C) 2000-2009 Josh Coalson
* Copyright (C) 2011-2016 Xiph.Org Foundation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Xiph.org Foundation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <limits.h>
#include <stdio.h>
#include <stdlib.h> /* for malloc() */
#include <string.h> /* for memcpy() */
#include <sys/types.h> /* for off_t */
#ifdef _WIN32
#include <windows.h> /* for GetFileType() */
#include <io.h> /* for _get_osfhandle() */
#endif
#include "share/compat.h"
#include "FLAC/assert.h"
#include "FLAC/stream_decoder.h"
#include "protected/stream_encoder.h"
#include "private/bitwriter.h"
#include "private/bitmath.h"
#include "private/crc.h"
#include "private/cpu.h"
#include "private/fixed.h"
#include "private/format.h"
#include "private/lpc.h"
#include "private/md5.h"
#include "private/memory.h"
#include "private/macros.h"
#if FLAC__HAS_OGG
#include "private/ogg_helper.h"
#include "private/ogg_mapping.h"
#endif
#include "private/stream_encoder.h"
#include "private/stream_encoder_framing.h"
#include "private/window.h"
#include "share/alloc.h"
#include "share/private.h"
/* Exact Rice codeword length calculation is off by default. The simple
* (and fast) estimation (of how many bits a residual value will be
* encoded with) in this encoder is very good, almost always yielding
* compression within 0.1% of exact calculation.
*/
#undef EXACT_RICE_BITS_CALCULATION
/* Rice parameter searching is off by default. The simple (and fast)
* parameter estimation in this encoder is very good, almost always
* yielding compression within 0.1% of the optimal parameters.
*/
#undef ENABLE_RICE_PARAMETER_SEARCH
typedef struct {
FLAC__int32 *data[FLAC__MAX_CHANNELS];
86
87
uint32_t size; /* of each data[] in samples */
uint32_t tail;
88
89
90
91
} verify_input_fifo;
typedef struct {
const FLAC__byte *data;
92
93
uint32_t capacity;
uint32_t bytes;
94
95
96
97
98
99
100
101
} verify_output;
typedef enum {
ENCODER_IN_MAGIC = 0,
ENCODER_IN_METADATA = 1,
ENCODER_IN_AUDIO = 2
} EncoderStateHint;
102
static const struct CompressionLevels {
103
104
FLAC__bool do_mid_side_stereo;
FLAC__bool loose_mid_side_stereo;
105
106
uint32_t max_lpc_order;
uint32_t qlp_coeff_precision;
107
108
109
FLAC__bool do_qlp_coeff_prec_search;
FLAC__bool do_escape_coding;
FLAC__bool do_exhaustive_model_search;
110
111
112
uint32_t min_residual_partition_order;
uint32_t max_residual_partition_order;
uint32_t rice_parameter_search_dist;
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
const char *apodization;
} compression_levels_[] = {
{ false, false, 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" },
{ true , true , 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" },
{ true , false, 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" },
{ false, false, 6, 0, false, false, false, 0, 4, 0, "tukey(5e-1)" },
{ true , true , 8, 0, false, false, false, 0, 4, 0, "tukey(5e-1)" },
{ true , false, 8, 0, false, false, false, 0, 5, 0, "tukey(5e-1)" },
{ true , false, 8, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2)" },
{ true , false, 12, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2)" },
{ true , false, 12, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2);punchout_tukey(3)" }
/* here we use locale-independent 5e-1 instead of 0.5 or 0,5 */
};
/***********************************************************************
*
* Private class method prototypes
*
***********************************************************************/
static void set_defaults_(FLAC__StreamEncoder *encoder);
static void free_(FLAC__StreamEncoder *encoder);
136
137
138
static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, uint32_t new_blocksize);
static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, uint32_t samples, FLAC__bool is_last_block);
static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, uint32_t samples, FLAC__bool is_last_block);
139
140
141
142
143
144
145
146
147
static void update_metadata_(const FLAC__StreamEncoder *encoder);
#if FLAC__HAS_OGG
static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
#endif
static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
static FLAC__bool process_subframe_(
FLAC__StreamEncoder *encoder,
148
149
uint32_t min_partition_order,
uint32_t max_partition_order,
150
const FLAC__FrameHeader *frame_header,
151
uint32_t subframe_bps,
152
153
154
155
const FLAC__int32 integer_signal[],
FLAC__Subframe *subframe[2],
FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
FLAC__int32 *residual[2],
156
157
uint32_t *best_subframe,
uint32_t *best_bits
158
159
160
161
);
static FLAC__bool add_subframe_(
FLAC__StreamEncoder *encoder,
162
163
uint32_t blocksize,
uint32_t subframe_bps,
164
165
166
167
const FLAC__Subframe *subframe,
FLAC__BitWriter *frame
);
168
static uint32_t evaluate_constant_subframe_(
169
170
FLAC__StreamEncoder *encoder,
const FLAC__int32 signal,
171
172
uint32_t blocksize,
uint32_t subframe_bps,
173
174
175
FLAC__Subframe *subframe
);
176
static uint32_t evaluate_fixed_subframe_(
177
178
179
180
FLAC__StreamEncoder *encoder,
const FLAC__int32 signal[],
FLAC__int32 residual[],
FLAC__uint64 abs_residual_partition_sums[],
181
182
183
184
185
186
187
188
uint32_t raw_bits_per_partition[],
uint32_t blocksize,
uint32_t subframe_bps,
uint32_t order,
uint32_t rice_parameter,
uint32_t rice_parameter_limit,
uint32_t min_partition_order,
uint32_t max_partition_order,
189
FLAC__bool do_escape_coding,
190
uint32_t rice_parameter_search_dist,
191
192
193
194
195
FLAC__Subframe *subframe,
FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
);
#ifndef FLAC__INTEGER_ONLY_LIBRARY
196
static uint32_t evaluate_lpc_subframe_(
197
198
199
200
FLAC__StreamEncoder *encoder,
const FLAC__int32 signal[],
FLAC__int32 residual[],
FLAC__uint64 abs_residual_partition_sums[],
201
uint32_t raw_bits_per_partition[],
202
const FLAC__real lp_coeff[],
203
204
205
206
207
208
209
210
uint32_t blocksize,
uint32_t subframe_bps,
uint32_t order,
uint32_t qlp_coeff_precision,
uint32_t rice_parameter,
uint32_t rice_parameter_limit,
uint32_t min_partition_order,
uint32_t max_partition_order,
211
FLAC__bool do_escape_coding,
212
uint32_t rice_parameter_search_dist,
213
214
215
216
217
FLAC__Subframe *subframe,
FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
);
#endif
218
static uint32_t evaluate_verbatim_subframe_(
219
220
FLAC__StreamEncoder *encoder,
const FLAC__int32 signal[],
221
222
uint32_t blocksize,
uint32_t subframe_bps,
223
224
225
FLAC__Subframe *subframe
);
226
static uint32_t find_best_partition_order_(
227
228
229
struct FLAC__StreamEncoderPrivate *private_,
const FLAC__int32 residual[],
FLAC__uint64 abs_residual_partition_sums[],
230
231
232
233
234
235
236
237
uint32_t raw_bits_per_partition[],
uint32_t residual_samples,
uint32_t predictor_order,
uint32_t rice_parameter,
uint32_t rice_parameter_limit,
uint32_t min_partition_order,
uint32_t max_partition_order,
uint32_t bps,
238
FLAC__bool do_escape_coding,
239
uint32_t rice_parameter_search_dist,
240
241
242
243
244
245
FLAC__EntropyCodingMethod *best_ecm
);
static void precompute_partition_info_sums_(
const FLAC__int32 residual[],
FLAC__uint64 abs_residual_partition_sums[],
246
247
248
249
250
uint32_t residual_samples,
uint32_t predictor_order,
uint32_t min_partition_order,
uint32_t max_partition_order,
uint32_t bps
251
252
253
254
);
static void precompute_partition_info_escapes_(
const FLAC__int32 residual[],
255
256
257
258
259
uint32_t raw_bits_per_partition[],
uint32_t residual_samples,
uint32_t predictor_order,
uint32_t min_partition_order,
uint32_t max_partition_order
260
261
262
263
264
265
266
);
static FLAC__bool set_partitioned_rice_(
#ifdef EXACT_RICE_BITS_CALCULATION
const FLAC__int32 residual[],
#endif
const FLAC__uint64 abs_residual_partition_sums[],
267
268
269
270
271
272
273
const uint32_t raw_bits_per_partition[],
const uint32_t residual_samples,
const uint32_t predictor_order,
const uint32_t suggested_rice_parameter,
const uint32_t rice_parameter_limit,
const uint32_t rice_parameter_search_dist,
const uint32_t partition_order,
274
275
const FLAC__bool search_for_escapes,
FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
276
uint32_t *bits
277
278
);
279
static uint32_t get_wasted_bits_(FLAC__int32 signal[], uint32_t samples);
280
281
282
283
284
/* verify-related routines: */
static void append_to_verify_fifo_(
verify_input_fifo *fifo,
const FLAC__int32 * const input[],
285
286
287
uint32_t input_offset,
uint32_t channels,
uint32_t wide_samples
288
289
290
291
292
);
static void append_to_verify_fifo_interleaved_(
verify_input_fifo *fifo,
const FLAC__int32 input[],
293
294
295
uint32_t input_offset,
uint32_t channels,
uint32_t wide_samples
296
297
298
299
300
301
302
303
304
305
);
static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
306
static FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, uint32_t samples, uint32_t current_frame, void *client_data);
307
308
309
310
311
312
313
314
315
316
static FILE *get_binary_stdout_(void);
/***********************************************************************
*
* Private class data
*
***********************************************************************/
typedef struct FLAC__StreamEncoderPrivate {
317
uint32_t input_capacity; /* current size (in samples) of the signal and residual buffers */
318
319
320
321
322
323
324
325
FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
#ifndef FLAC__INTEGER_ONLY_LIBRARY
FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */
FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */
FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */
#endif
326
327
uint32_t subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
uint32_t subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
328
329
330
331
332
333
334
335
336
337
FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
FLAC__int32 *residual_workspace_mid_side[2][2];
FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
FLAC__Subframe subframe_workspace_mid_side[2][2];
FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
338
339
340
341
uint32_t best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
uint32_t best_subframe_mid_side[2];
uint32_t best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
uint32_t best_subframe_bits_mid_side[2];
342
FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
343
uint32_t *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
344
FLAC__BitWriter *frame; /* the current frame being worked on */
345
346
uint32_t loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
uint32_t loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
347
348
349
FLAC__ChannelAssignment last_channel_assignment;
FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
350
351
uint32_t current_sample_number;
uint32_t current_frame_number;
352
353
FLAC__MD5Context md5context;
FLAC__CPUInfo cpuinfo;
354
void (*local_precompute_partition_info_sums)(const FLAC__int32 residual[], FLAC__uint64 abs_residual_partition_sums[], uint32_t residual_samples, uint32_t predictor_order, uint32_t min_partition_order, uint32_t max_partition_order, uint32_t bps);
355
#ifndef FLAC__INTEGER_ONLY_LIBRARY
356
357
uint32_t (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], uint32_t data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
uint32_t (*local_fixed_compute_best_predictor_wide)(const FLAC__int32 data[], uint32_t data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
358
#else
359
360
uint32_t (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], uint32_t data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
uint32_t (*local_fixed_compute_best_predictor_wide)(const FLAC__int32 data[], uint32_t data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
361
362
#endif
#ifndef FLAC__INTEGER_ONLY_LIBRARY
363
364
365
366
void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], uint32_t data_len, uint32_t lag, FLAC__real autoc[]);
void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, uint32_t data_len, const FLAC__int32 qlp_coeff[], uint32_t order, int lp_quantization, FLAC__int32 residual[]);
void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, uint32_t data_len, const FLAC__int32 qlp_coeff[], uint32_t order, int lp_quantization, FLAC__int32 residual[]);
void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, uint32_t data_len, const FLAC__int32 qlp_coeff[], uint32_t order, int lp_quantization, FLAC__int32 residual[]);
367
368
369
370
371
372
373
374
375
376
377
378
#endif
FLAC__bool disable_constant_subframes;
FLAC__bool disable_fixed_subframes;
FLAC__bool disable_verbatim_subframes;
FLAC__bool is_ogg;
FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
FLAC__StreamEncoderSeekCallback seek_callback;
FLAC__StreamEncoderTellCallback tell_callback;
FLAC__StreamEncoderWriteCallback write_callback;
FLAC__StreamEncoderMetadataCallback metadata_callback;
FLAC__StreamEncoderProgressCallback progress_callback;
void *client_data;
379
uint32_t first_seekpoint_to_check;
380
381
382
FILE *file; /* only used when encoding to a file */
FLAC__uint64 bytes_written;
FLAC__uint64 samples_written;
383
384
uint32_t frames_written;
uint32_t total_frames_estimate;
385
386
387
388
389
390
391
392
393
394
395
396
/* unaligned (original) pointers to allocated data */
FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
FLAC__int32 *integer_signal_mid_side_unaligned[2];
#ifndef FLAC__INTEGER_ONLY_LIBRARY
FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */
FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */
FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
FLAC__real *windowed_signal_unaligned;
#endif
FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
FLAC__uint64 *abs_residual_partition_sums_unaligned;
397
uint32_t *raw_bits_per_partition_unaligned;
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
/*
* These fields have been moved here from private function local
* declarations merely to save stack space during encoding.
*/
#ifndef FLAC__INTEGER_ONLY_LIBRARY
FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
#endif
FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
/*
* The data for the verify section
*/
struct {
FLAC__StreamDecoder *decoder;
EncoderStateHint state_hint;
FLAC__bool needs_magic_hack;
verify_input_fifo input_fifo;
verify_output output;
struct {
FLAC__uint64 absolute_sample;
417
418
419
uint32_t frame_number;
uint32_t channel;
uint32_t sample;
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
FLAC__int32 expected;
FLAC__int32 got;
} error_stats;
} verify;
FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
} FLAC__StreamEncoderPrivate;
/***********************************************************************
*
* Public static class data
*
***********************************************************************/
FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
"FLAC__STREAM_ENCODER_OK",
"FLAC__STREAM_ENCODER_UNINITIALIZED",
"FLAC__STREAM_ENCODER_OGG_ERROR",
"FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
"FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
"FLAC__STREAM_ENCODER_CLIENT_ERROR",
"FLAC__STREAM_ENCODER_IO_ERROR",
"FLAC__STREAM_ENCODER_FRAMING_ERROR",
"FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
};
FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
"FLAC__STREAM_ENCODER_INIT_STATUS_OK",
"FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
"FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
"FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
"FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
"FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
"FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
};
FLAC_API const char * const FLAC__StreamEncoderReadStatusString[] = {
"FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
"FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
"FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
"FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
};
FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
"FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
"FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
};
FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
"FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
"FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
"FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
};
FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
"FLAC__STREAM_ENCODER_TELL_STATUS_OK",
"FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
"FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
};
/* Number of samples that will be overread to watch for end of stream. By
* 'overread', we mean that the FLAC__stream_encoder_process*() calls will
* always try to read blocksize+1 samples before encoding a block, so that
* even if the stream has a total sample count that is an integral multiple
* of the blocksize, we will still notice when we are encoding the last
* block. This is needed, for example, to correctly set the end-of-stream
* marker in Ogg FLAC.
*
* WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
* not really any reason to change it.
*/
497
static const uint32_t OVERREAD_ = 1;
498
499
500
501
502
503
504
505
506
/***********************************************************************
*
* Class constructor/destructor
*
*/
FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void)
{
FLAC__StreamEncoder *encoder;
507
uint32_t i;
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
encoder = calloc(1, sizeof(FLAC__StreamEncoder));
if(encoder == 0) {
return 0;
}
encoder->protected_ = calloc(1, sizeof(FLAC__StreamEncoderProtected));
if(encoder->protected_ == 0) {
free(encoder);
return 0;
}
encoder->private_ = calloc(1, sizeof(FLAC__StreamEncoderPrivate));
if(encoder->private_ == 0) {
free(encoder->protected_);
free(encoder);
return 0;
}
encoder->private_->frame = FLAC__bitwriter_new();
if(encoder->private_->frame == 0) {
free(encoder->private_);
free(encoder->protected_);
free(encoder);
return 0;
}
encoder->private_->file = 0;
set_defaults_(encoder);
encoder->private_->is_being_deleted = false;
for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
}
for(i = 0; i < 2; i++) {
encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
}
for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
}
for(i = 0; i < 2; i++) {
encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
}
for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
}
for(i = 0; i < 2; i++) {
FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
}
for(i = 0; i < 2; i++)
FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
return encoder;
}
FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
{
578
uint32_t i;
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
if (encoder == NULL)
return ;
FLAC__ASSERT(0 != encoder->protected_);
FLAC__ASSERT(0 != encoder->private_);
FLAC__ASSERT(0 != encoder->private_->frame);
encoder->private_->is_being_deleted = true;
(void)FLAC__stream_encoder_finish(encoder);
if(0 != encoder->private_->verify.decoder)
FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
}
for(i = 0; i < 2; i++) {
FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
}
for(i = 0; i < 2; i++)
FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
FLAC__bitwriter_delete(encoder->private_->frame);
free(encoder->private_);
free(encoder->protected_);
free(encoder);
}
/***********************************************************************
*
* Public class methods
*
***********************************************************************/
static FLAC__StreamEncoderInitStatus init_stream_internal_(
FLAC__StreamEncoder *encoder,
FLAC__StreamEncoderReadCallback read_callback,
FLAC__StreamEncoderWriteCallback write_callback,
FLAC__StreamEncoderSeekCallback seek_callback,
FLAC__StreamEncoderTellCallback tell_callback,
FLAC__StreamEncoderMetadataCallback metadata_callback,
void *client_data,
FLAC__bool is_ogg
)
{
628
uint32_t i;
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
FLAC__ASSERT(0 != encoder);
if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
if(FLAC__HAS_OGG == 0 && is_ogg)
return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
if(0 == write_callback || (seek_callback && 0 == tell_callback))
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
if(encoder->protected_->channels != 2) {
encoder->protected_->do_mid_side_stereo = false;
encoder->protected_->loose_mid_side_stereo = false;
}
else if(!encoder->protected_->do_mid_side_stereo)
encoder->protected_->loose_mid_side_stereo = false;
if(encoder->protected_->bits_per_sample >= 32)
653
encoder->protected_->do_mid_side_stereo = false; /* since we currently do 32-bit math, the side channel would have 33 bps and overflow */
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
if(encoder->protected_->blocksize == 0) {
if(encoder->protected_->max_lpc_order == 0)
encoder->protected_->blocksize = 1152;
else
encoder->protected_->blocksize = 4096;
}
if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
if(encoder->protected_->qlp_coeff_precision == 0) {
if(encoder->protected_->bits_per_sample < 16) {
/* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
/* @@@ until then we'll make a guess */
encoder->protected_->qlp_coeff_precision = flac_max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
}
else if(encoder->protected_->bits_per_sample == 16) {
if(encoder->protected_->blocksize <= 192)
encoder->protected_->qlp_coeff_precision = 7;
else if(encoder->protected_->blocksize <= 384)
encoder->protected_->qlp_coeff_precision = 8;
else if(encoder->protected_->blocksize <= 576)
encoder->protected_->qlp_coeff_precision = 9;
else if(encoder->protected_->blocksize <= 1152)
encoder->protected_->qlp_coeff_precision = 10;
else if(encoder->protected_->blocksize <= 2304)
encoder->protected_->qlp_coeff_precision = 11;
else if(encoder->protected_->blocksize <= 4608)
encoder->protected_->qlp_coeff_precision = 12;
else
encoder->protected_->qlp_coeff_precision = 13;
}
else {
if(encoder->protected_->blocksize <= 384)
encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
else if(encoder->protected_->blocksize <= 1152)
encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
else
encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
}
FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
}
else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
if(encoder->protected_->streamable_subset) {
if(!FLAC__format_blocksize_is_subset(encoder->protected_->blocksize, encoder->protected_->sample_rate))
return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate))
return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
if(
encoder->protected_->bits_per_sample != 8 &&
encoder->protected_->bits_per_sample != 12 &&
encoder->protected_->bits_per_sample != 16 &&
encoder->protected_->bits_per_sample != 20 &&
encoder->protected_->bits_per_sample != 24
)
return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
if(
encoder->protected_->sample_rate <= 48000 &&
(
encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
)
) {
return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
}
}
if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
#if FLAC__HAS_OGG
/* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
746
uint32_t i1;
747
748
749
750
751
752
753
754
755
756
757
758
759
for(i1 = 1; i1 < encoder->protected_->num_metadata_blocks; i1++) {
if(0 != encoder->protected_->metadata[i1] && encoder->protected_->metadata[i1]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
FLAC__StreamMetadata *vc = encoder->protected_->metadata[i1];
for( ; i1 > 0; i1--)
encoder->protected_->metadata[i1] = encoder->protected_->metadata[i1-1];
encoder->protected_->metadata[0] = vc;
break;
}
}
}
#endif
/* keep track of any SEEKTABLE block */
if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
760
uint32_t i2;
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
for(i2 = 0; i2 < encoder->protected_->num_metadata_blocks; i2++) {
if(0 != encoder->protected_->metadata[i2] && encoder->protected_->metadata[i2]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
encoder->private_->seek_table = &encoder->protected_->metadata[i2]->data.seek_table;
break; /* take only the first one */
}
}
}
/* validate metadata */
if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
metadata_has_seektable = false;
metadata_has_vorbis_comment = false;
metadata_picture_has_type1 = false;
metadata_picture_has_type2 = false;
for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
if(metadata_has_seektable) /* only one is allowed */
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
metadata_has_seektable = true;
if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
}
else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
if(metadata_has_vorbis_comment) /* only one is allowed */
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
metadata_has_vorbis_comment = true;
}
else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
}
else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
if(metadata_picture_has_type1) /* there should only be 1 per stream */
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
metadata_picture_has_type1 = true;
/* standard icon must be 32x32 pixel PNG */
if(
m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
(
(strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
m->data.picture.width != 32 ||
m->data.picture.height != 32
)
)
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
}
else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
if(metadata_picture_has_type2) /* there should only be 1 per stream */
return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
metadata_picture_has_type2 = true;
}
}
}
encoder->private_->input_capacity = 0;
for(i = 0; i < encoder->protected_->channels; i++) {
encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
#ifndef FLAC__INTEGER_ONLY_LIBRARY
encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
#endif
}
for(i = 0; i < 2; i++) {
encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
#ifndef FLAC__INTEGER_ONLY_LIBRARY
encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
#endif
}
#ifndef FLAC__INTEGER_ONLY_LIBRARY
for(i = 0; i < encoder->protected_->num_apodizations; i++)
encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
#endif
for(i = 0; i < encoder->protected_->channels; i++) {
encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
encoder->private_->best_subframe[i] = 0;
}
for(i = 0; i < 2; i++) {
encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
encoder->private_->best_subframe_mid_side[i] = 0;
}
encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
#ifndef FLAC__INTEGER_ONLY_LIBRARY
853
encoder->private_->loose_mid_side_stereo_frames = (uint32_t)((double)encoder->protected_->sample_rate * 0.4 / (double)encoder->protected_->blocksize + 0.5);
854
855
856
857
858
859
860
#else
/* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
/* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */
FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
861
encoder->private_->loose_mid_side_stereo_frames = (uint32_t)FLAC__fixedpoint_trunc((((FLAC__uint64)(encoder->protected_->sample_rate) * (FLAC__uint64)(26214)) << 16) / (encoder->protected_->blocksize<<16) + FLAC__FP_ONE_HALF);
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
#endif
if(encoder->private_->loose_mid_side_stereo_frames == 0)
encoder->private_->loose_mid_side_stereo_frames = 1;
encoder->private_->loose_mid_side_stereo_frame_count = 0;
encoder->private_->current_sample_number = 0;
encoder->private_->current_frame_number = 0;
/*
* get the CPU info and set the function pointers
*/
FLAC__cpu_info(&encoder->private_->cpuinfo);
/* first default to the non-asm routines */
#ifndef FLAC__INTEGER_ONLY_LIBRARY
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
#endif
encoder->private_->local_precompute_partition_info_sums = precompute_partition_info_sums_;
encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide;
#ifndef FLAC__INTEGER_ONLY_LIBRARY
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
#endif
/* now override with asm where appropriate */
#ifndef FLAC__INTEGER_ONLY_LIBRARY
# ifndef FLAC__NO_ASM
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
#if defined(FLAC__CPU_PPC64) && defined(FLAC__USE_VSX)
#ifdef FLAC__HAS_TARGET_POWER8
#ifdef FLAC__HAS_TARGET_POWER9
if (encoder->private_->cpuinfo.ppc.arch_3_00) {
if(encoder->protected_->max_lpc_order < 4)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power9_vsx_lag_4;
else if(encoder->protected_->max_lpc_order < 8)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power9_vsx_lag_8;
else if(encoder->protected_->max_lpc_order < 12)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power9_vsx_lag_12;
else if(encoder->protected_->max_lpc_order < 16)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power9_vsx_lag_16;
else
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
} else
#endif
if (encoder->private_->cpuinfo.ppc.arch_2_07) {
if(encoder->protected_->max_lpc_order < 4)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power8_vsx_lag_4;
else if(encoder->protected_->max_lpc_order < 8)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power8_vsx_lag_8;
else if(encoder->protected_->max_lpc_order < 12)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power8_vsx_lag_12;
else if(encoder->protected_->max_lpc_order < 16)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_power8_vsx_lag_16;
else
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
}
#endif
#endif
918
919
920
921
if(encoder->private_->cpuinfo.use_asm) {
# ifdef FLAC__CPU_IA32
FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
# ifdef FLAC__HAS_NASM
922
if (encoder->private_->cpuinfo.x86.sse) {
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
if(encoder->protected_->max_lpc_order < 4)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4_old;
else if(encoder->protected_->max_lpc_order < 8)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8_old;
else if(encoder->protected_->max_lpc_order < 12)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12_old;
else if(encoder->protected_->max_lpc_order < 16)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_16_old;
else
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
}
else
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_asm_ia32; /* OPT_IA32: was really necessary for GCC < 4.9 */
938
if (encoder->private_->cpuinfo.x86.mmx) {
939
940
941
942
943
944
945
946
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
}
else {
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
}
947
if (encoder->private_->cpuinfo.x86.mmx && encoder->private_->cpuinfo.x86.cmov)
948
949
950
951
encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
# endif /* FLAC__HAS_NASM */
# if FLAC__HAS_X86INTRIN
# if defined FLAC__SSE_SUPPORTED
952
953
if (encoder->private_->cpuinfo.x86.sse) {
if (encoder->private_->cpuinfo.x86.sse42 || !encoder->private_->cpuinfo.x86.intel) { /* use new autocorrelation functions */
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
if(encoder->protected_->max_lpc_order < 4)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_new;
else if(encoder->protected_->max_lpc_order < 8)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_new;
else if(encoder->protected_->max_lpc_order < 12)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_new;
else if(encoder->protected_->max_lpc_order < 16)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_new;
else
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
}
else { /* use old autocorrelation functions */
if(encoder->protected_->max_lpc_order < 4)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_old;
else if(encoder->protected_->max_lpc_order < 8)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_old;
else if(encoder->protected_->max_lpc_order < 12)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_old;
else if(encoder->protected_->max_lpc_order < 16)
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_old;
else
encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
}
}
# endif
# ifdef FLAC__SSE2_SUPPORTED
981
if (encoder->private_->cpuinfo.x86.sse2) {
982
983
984
985
986
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse2;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_sse2;
}
# endif
# ifdef FLAC__SSE4_1_SUPPORTED
987
if (encoder->private_->cpuinfo.x86.sse41) {
988
989
990
991
992
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse41;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_sse41;
}
# endif
# ifdef FLAC__AVX2_SUPPORTED
993
if (encoder->private_->cpuinfo.x86.avx2) {
994
995
996
997
998
999
1000
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_avx2;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_avx2;
encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_avx2;
}
# endif
# ifdef FLAC__SSE2_SUPPORTED