1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002 Josh Coalson
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 #include <stdlib.h> /* for malloc() */
22 #include <string.h> /* for memcpy() */
23 #include "FLAC/assert.h"
24 #include "FLAC/stream_decoder.h"
25 #include "protected/stream_encoder.h"
26 #include "private/bitbuffer.h"
27 #include "private/bitmath.h"
28 #include "private/crc.h"
29 #include "private/cpu.h"
30 #include "private/stream_encoder_framing.h"
31 #include "private/fixed.h"
32 #include "private/lpc.h"
33 #include "private/md5.h"
34 #include "private/memory.h"
39 #define min(x,y) ((x)<(y)?(x):(y))
44 #define max(x,y) ((x)>(y)?(x):(y))
47 FLAC__int32 *data[FLAC__MAX_CHANNELS];
48 unsigned size; /* of each data[] in samples */
53 const FLAC__byte *data;
60 ENCODER_IN_METADATA = 1,
64 /*@@@@ function for getting the error_stats */
66 /***********************************************************************
68 * Private class method prototypes
70 ***********************************************************************/
72 static void set_defaults_(FLAC__StreamEncoder *encoder);
73 static void free_(FLAC__StreamEncoder *encoder);
74 static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_size);
75 static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples);
76 static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame);
77 static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame);
78 static FLAC__bool process_subframe_(FLAC__StreamEncoder *encoder, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool verbatim_only, const FLAC__FrameHeader *frame_header, unsigned subframe_bps, const FLAC__int32 integer_signal[], const FLAC__real real_signal[], FLAC__Subframe *subframe[2], FLAC__int32 *residual[2], unsigned *best_subframe, unsigned *best_bits);
79 static FLAC__bool add_subframe_(FLAC__StreamEncoder *encoder, const FLAC__FrameHeader *frame_header, unsigned subframe_bps, const FLAC__Subframe *subframe, FLAC__BitBuffer *frame);
80 static unsigned evaluate_constant_subframe_(const FLAC__int32 signal, unsigned subframe_bps, FLAC__Subframe *subframe);
81 static unsigned evaluate_fixed_subframe_(FLAC__StreamEncoder *encoder, const FLAC__int32 signal[], FLAC__int32 residual[], FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned raw_bits_per_partition[], unsigned blocksize, unsigned subframe_bps, unsigned order, unsigned rice_parameter, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool do_escape_coding, unsigned rice_parameter_search_dist, FLAC__Subframe *subframe);
82 static unsigned evaluate_lpc_subframe_(FLAC__StreamEncoder *encoder, const FLAC__int32 signal[], FLAC__int32 residual[], FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned raw_bits_per_partition[], const FLAC__real lp_coeff[], unsigned blocksize, unsigned subframe_bps, unsigned order, unsigned qlp_coeff_precision, unsigned rice_parameter, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool do_escape_coding, unsigned rice_parameter_search_dist, FLAC__Subframe *subframe);
83 static unsigned evaluate_verbatim_subframe_(const FLAC__int32 signal[], unsigned blocksize, unsigned subframe_bps, FLAC__Subframe *subframe);
84 static unsigned find_best_partition_order_(struct FLAC__StreamEncoderPrivate *private_, const FLAC__int32 residual[], FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned raw_bits_per_partition[], unsigned residual_samples, unsigned predictor_order, unsigned rice_parameter, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool do_escape_coding, unsigned rice_parameter_search_dist, unsigned *best_partition_order, unsigned best_parameters[], unsigned best_raw_bits[]);
85 static void precompute_partition_info_sums_(const FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned residual_samples, unsigned predictor_order, unsigned min_partition_order, unsigned max_partition_order);
86 static void precompute_partition_info_escapes_(const FLAC__int32 residual[], unsigned raw_bits_per_partition[], unsigned residual_samples, unsigned predictor_order, unsigned min_partition_order, unsigned max_partition_order);
87 #ifdef DONT_ESTIMATE_RICE_BITS
88 static FLAC__bool set_partitioned_rice_(const FLAC__uint32 abs_residual[], const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, unsigned parameters[], unsigned *bits);
89 static FLAC__bool set_partitioned_rice_with_precompute_(const FLAC__int32 residual[], const FLAC__uint64 abs_residual_partition_sums[], const unsigned raw_bits_per_partition[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, const FLAC__bool search_for_escapes, unsigned parameters[], unsigned raw_bits[], unsigned *bits);
91 static FLAC__bool set_partitioned_rice_(const FLAC__uint32 abs_residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, unsigned parameters[], unsigned *bits);
92 static FLAC__bool set_partitioned_rice_with_precompute_(const FLAC__uint32 abs_residual[], const FLAC__uint64 abs_residual_partition_sums[], const unsigned raw_bits_per_partition[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, const FLAC__bool search_for_escapes, unsigned parameters[], unsigned raw_bits[], unsigned *bits);
94 static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
95 /* verify-related routines: */
96 static void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples);
97 static void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples);
98 static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
99 static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
100 static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
101 static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
103 /***********************************************************************
107 ***********************************************************************/
109 typedef struct FLAC__StreamEncoderPrivate {
110 unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
111 FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
112 FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
113 FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* the floating-point version of the input signal */
114 FLAC__real *real_signal_mid_side[2]; /* the floating-point version of the mid-side input signal (stereo only) */
115 unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
116 unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
117 FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
118 FLAC__int32 *residual_workspace_mid_side[2][2];
119 FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
120 FLAC__Subframe subframe_workspace_mid_side[2][2];
121 FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
122 FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
123 unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index into the above workspaces */
124 unsigned best_subframe_mid_side[2];
125 unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
126 unsigned best_subframe_bits_mid_side[2];
127 FLAC__uint32 *abs_residual; /* workspace where abs(candidate residual) is stored */
128 FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
129 unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
130 FLAC__BitBuffer *frame; /* the current frame being worked on */
131 double loose_mid_side_stereo_frames_exact; /* exact number of frames the encoder will use before trying both independent and mid/side frames again */
132 unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
133 unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
134 FLAC__ChannelAssignment last_channel_assignment;
135 FLAC__StreamMetadata metadata;
136 unsigned current_sample_number;
137 unsigned current_frame_number;
138 struct MD5Context md5context;
139 FLAC__CPUInfo cpuinfo;
140 unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__real residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
141 void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
142 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[]);
143 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[]);
144 FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
145 FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
146 FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
147 FLAC__bool precompute_partition_sums; /* our initial guess as to whether precomputing the partitions sums will be a speed improvement */
148 FLAC__StreamEncoderWriteCallback write_callback;
149 FLAC__StreamEncoderMetadataCallback metadata_callback;
151 /* unaligned (original) pointers to allocated data */
152 FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
153 FLAC__int32 *integer_signal_mid_side_unaligned[2];
154 FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS];
155 FLAC__real *real_signal_mid_side_unaligned[2];
156 FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
157 FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
158 FLAC__uint32 *abs_residual_unaligned;
159 FLAC__uint64 *abs_residual_partition_sums_unaligned;
160 unsigned *raw_bits_per_partition_unaligned;
162 * These fields have been moved here from private function local
163 * declarations merely to save stack space during encoding.
165 FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
166 unsigned parameters[2][1 << FLAC__MAX_RICE_PARTITION_ORDER], raw_bits[2][1 << FLAC__MAX_RICE_PARTITION_ORDER]; /* from find_best_partition_order_() */
168 * The data for the verify section
171 FLAC__StreamDecoder *decoder;
172 EncoderStateHint state_hint;
173 FLAC__bool needs_magic_hack;
174 verify_input_fifo input_fifo;
175 verify_output output;
177 FLAC__uint64 absolute_sample;
178 unsigned frame_number;
181 FLAC__int32 expected;
185 } FLAC__StreamEncoderPrivate;
187 /***********************************************************************
189 * Public static class data
191 ***********************************************************************/
193 const char * const FLAC__StreamEncoderStateString[] = {
194 "FLAC__STREAM_ENCODER_OK",
195 "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
196 "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
197 "FLAC__STREAM_ENCODER_INVALID_CALLBACK",
198 "FLAC__STREAM_ENCODER_INVALID_NUMBER_OF_CHANNELS",
199 "FLAC__STREAM_ENCODER_INVALID_BITS_PER_SAMPLE",
200 "FLAC__STREAM_ENCODER_INVALID_SAMPLE_RATE",
201 "FLAC__STREAM_ENCODER_INVALID_BLOCK_SIZE",
202 "FLAC__STREAM_ENCODER_INVALID_QLP_COEFF_PRECISION",
203 "FLAC__STREAM_ENCODER_MID_SIDE_CHANNELS_MISMATCH",
204 "FLAC__STREAM_ENCODER_MID_SIDE_SAMPLE_SIZE_MISMATCH",
205 "FLAC__STREAM_ENCODER_ILLEGAL_MID_SIDE_FORCE",
206 "FLAC__STREAM_ENCODER_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
207 "FLAC__STREAM_ENCODER_NOT_STREAMABLE",
208 "FLAC__STREAM_ENCODER_FRAMING_ERROR",
209 "FLAC__STREAM_ENCODER_INVALID_METADATA",
210 "FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING",
211 "FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_WRITING",
212 "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR",
213 "FLAC__STREAM_ENCODER_ALREADY_INITIALIZED",
214 "FLAC__STREAM_ENCODER_UNINITIALIZED"
217 const char * const FLAC__StreamEncoderWriteStatusString[] = {
218 "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
219 "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
222 /***********************************************************************
224 * Class constructor/destructor
227 FLAC__StreamEncoder *FLAC__stream_encoder_new()
229 FLAC__StreamEncoder *encoder;
231 FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
233 encoder = (FLAC__StreamEncoder*)malloc(sizeof(FLAC__StreamEncoder));
237 memset(encoder, 0, sizeof(FLAC__StreamEncoder));
239 encoder->protected_ = (FLAC__StreamEncoderProtected*)malloc(sizeof(FLAC__StreamEncoderProtected));
240 if(encoder->protected_ == 0) {
244 memset(encoder->protected_, 0, sizeof(FLAC__StreamEncoderProtected));
246 encoder->private_ = (FLAC__StreamEncoderPrivate*)malloc(sizeof(FLAC__StreamEncoderPrivate));
247 if(encoder->private_ == 0) {
248 free(encoder->protected_);
252 memset(encoder->private_, 0, sizeof(FLAC__StreamEncoderPrivate));
254 encoder->private_->frame = FLAC__bitbuffer_new();
255 if(encoder->private_->frame == 0) {
256 free(encoder->private_);
257 free(encoder->protected_);
262 set_defaults_(encoder);
264 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
269 void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
271 FLAC__ASSERT(0 != encoder);
272 FLAC__ASSERT(0 != encoder->protected_);
273 FLAC__ASSERT(0 != encoder->private_);
274 FLAC__ASSERT(0 != encoder->private_->frame);
277 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder)
278 FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
279 FLAC__bitbuffer_delete(encoder->private_->frame);
280 free(encoder->private_);
281 free(encoder->protected_);
285 /***********************************************************************
287 * Public class methods
289 ***********************************************************************/
291 FLAC__StreamEncoderState FLAC__stream_encoder_init(FLAC__StreamEncoder *encoder)
295 FLAC__ASSERT(0 != encoder);
297 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
298 return encoder->protected_->state = FLAC__STREAM_ENCODER_ALREADY_INITIALIZED;
300 encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
302 if(0 == encoder->private_->write_callback || 0 == encoder->private_->metadata_callback)
303 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_CALLBACK;
305 if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
306 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_NUMBER_OF_CHANNELS;
308 if(encoder->protected_->do_mid_side_stereo && encoder->protected_->channels != 2)
309 return encoder->protected_->state = FLAC__STREAM_ENCODER_MID_SIDE_CHANNELS_MISMATCH;
311 if(encoder->protected_->loose_mid_side_stereo && !encoder->protected_->do_mid_side_stereo)
312 return encoder->protected_->state = FLAC__STREAM_ENCODER_ILLEGAL_MID_SIDE_FORCE;
314 if(encoder->protected_->bits_per_sample >= 32)
315 encoder->protected_->do_mid_side_stereo = false; /* since we do 32-bit math, the side channel would have 33 bps and overflow */
317 if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
318 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_BITS_PER_SAMPLE;
320 if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
321 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_SAMPLE_RATE;
323 if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
324 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_BLOCK_SIZE;
326 if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
327 return encoder->protected_->state = FLAC__STREAM_ENCODER_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
329 if(encoder->protected_->qlp_coeff_precision == 0) {
330 if(encoder->protected_->bits_per_sample < 16) {
331 /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
332 /* @@@ until then we'll make a guess */
333 encoder->protected_->qlp_coeff_precision = max(5, 2 + encoder->protected_->bits_per_sample / 2);
335 else if(encoder->protected_->bits_per_sample == 16) {
336 if(encoder->protected_->blocksize <= 192)
337 encoder->protected_->qlp_coeff_precision = 7;
338 else if(encoder->protected_->blocksize <= 384)
339 encoder->protected_->qlp_coeff_precision = 8;
340 else if(encoder->protected_->blocksize <= 576)
341 encoder->protected_->qlp_coeff_precision = 9;
342 else if(encoder->protected_->blocksize <= 1152)
343 encoder->protected_->qlp_coeff_precision = 10;
344 else if(encoder->protected_->blocksize <= 2304)
345 encoder->protected_->qlp_coeff_precision = 11;
346 else if(encoder->protected_->blocksize <= 4608)
347 encoder->protected_->qlp_coeff_precision = 12;
349 encoder->protected_->qlp_coeff_precision = 13;
352 encoder->protected_->qlp_coeff_precision = min(13, 8*sizeof(FLAC__int32) - encoder->protected_->bits_per_sample - 1 - 2); /* @@@ -2 to keep things 32-bit safe */
355 else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision + encoder->protected_->bits_per_sample >= 8*sizeof(FLAC__uint32) || encoder->protected_->qlp_coeff_precision >= (1u<<FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN))
356 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_QLP_COEFF_PRECISION;
358 if(encoder->protected_->streamable_subset) {
359 /*@@@ add check for blocksize here */
360 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)
361 return encoder->protected_->state = FLAC__STREAM_ENCODER_NOT_STREAMABLE;
362 if(encoder->protected_->sample_rate > 655350)
363 return encoder->protected_->state = FLAC__STREAM_ENCODER_NOT_STREAMABLE;
366 if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
367 encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
368 if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
369 encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
371 /* validate metadata */
372 if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
373 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA;
374 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
375 if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_STREAMINFO)
376 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA;
377 else if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
378 if(!FLAC__format_seektable_is_legal(&encoder->protected_->metadata[i]->data.seek_table))
379 return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA;
383 encoder->private_->input_capacity = 0;
384 for(i = 0; i < encoder->protected_->channels; i++) {
385 encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
386 encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
388 for(i = 0; i < 2; i++) {
389 encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
390 encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
392 for(i = 0; i < encoder->protected_->channels; i++) {
393 encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
394 encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
395 encoder->private_->best_subframe[i] = 0;
397 for(i = 0; i < 2; i++) {
398 encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
399 encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
400 encoder->private_->best_subframe_mid_side[i] = 0;
402 for(i = 0; i < encoder->protected_->channels; i++) {
403 encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
404 encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
406 for(i = 0; i < 2; i++) {
407 encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
408 encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
410 encoder->private_->abs_residual_unaligned = encoder->private_->abs_residual = 0;
411 encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
412 encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
413 encoder->private_->loose_mid_side_stereo_frames_exact = (double)encoder->protected_->sample_rate * 0.4 / (double)encoder->protected_->blocksize;
414 encoder->private_->loose_mid_side_stereo_frames = (unsigned)(encoder->private_->loose_mid_side_stereo_frames_exact + 0.5);
415 if(encoder->private_->loose_mid_side_stereo_frames == 0)
416 encoder->private_->loose_mid_side_stereo_frames = 1;
417 encoder->private_->loose_mid_side_stereo_frame_count = 0;
418 encoder->private_->current_sample_number = 0;
419 encoder->private_->current_frame_number = 0;
421 encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
422 encoder->private_->use_wide_by_order = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(max(encoder->protected_->max_lpc_order, FLAC__MAX_FIXED_ORDER))+1 > 30); /*@@@ need to use this? */
423 encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
426 * get the CPU info and set the function pointers
428 FLAC__cpu_info(&encoder->private_->cpuinfo);
429 /* first default to the non-asm routines */
430 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
431 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
432 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
433 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
434 /* now override with asm where appropriate */
436 if(encoder->private_->cpuinfo.use_asm) {
437 #ifdef FLAC__CPU_IA32
438 FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
439 #ifdef FLAC__HAS_NASM
440 if(0 && encoder->private_->cpuinfo.data.ia32.sse) {
441 if(encoder->protected_->max_lpc_order < 4)
442 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
443 else if(encoder->protected_->max_lpc_order < 8)
444 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
445 else if(encoder->protected_->max_lpc_order < 12)
446 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
448 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
450 else if(encoder->private_->cpuinfo.data.ia32._3dnow)
451 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
453 encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
454 if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
455 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
456 if(encoder->private_->cpuinfo.data.ia32.mmx) {
457 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
458 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
461 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
462 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
468 /* finally override based on wide-ness if necessary */
469 if(encoder->private_->use_wide_by_block) {
470 encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
473 /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */
474 encoder->private_->precompute_partition_sums = (encoder->protected_->max_residual_partition_order > encoder->protected_->min_residual_partition_order) || encoder->protected_->do_escape_coding;
476 if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
477 /* the above function sets the state for us in case of an error */
478 return encoder->protected_->state;
481 if(!FLAC__bitbuffer_init(encoder->private_->frame))
482 return encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
485 * Set up the verify stuff if necessary
487 if(encoder->protected_->verify) {
489 * First, set up the fifo which will hold the
490 * original signal to compare against
492 encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize;
493 for(i = 0; i < encoder->protected_->channels; i++) {
494 if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size)))
495 return encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
497 encoder->private_->verify.input_fifo.tail = 0;
500 * Now set up a stream decoder for verification
502 encoder->private_->verify.decoder = FLAC__stream_decoder_new();
503 if(0 == encoder->private_->verify.decoder)
504 return encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
506 FLAC__stream_decoder_set_read_callback(encoder->private_->verify.decoder, verify_read_callback_);
507 FLAC__stream_decoder_set_write_callback(encoder->private_->verify.decoder, verify_write_callback_);
508 FLAC__stream_decoder_set_metadata_callback(encoder->private_->verify.decoder, verify_metadata_callback_);
509 FLAC__stream_decoder_set_error_callback(encoder->private_->verify.decoder, verify_error_callback_);
510 FLAC__stream_decoder_set_client_data(encoder->private_->verify.decoder, encoder);
511 if(FLAC__stream_decoder_init(encoder->private_->verify.decoder) != FLAC__STREAM_DECODER_SEARCH_FOR_METADATA)
512 return encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
516 * write the stream header
518 if(encoder->protected_->verify)
519 encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
520 if(!FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN))
521 return encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
522 if(!write_bitbuffer_(encoder, 0)) {
523 /* the above function sets the state for us in case of an error */
524 return encoder->protected_->state;
528 * write the STREAMINFO metadata block
530 if(encoder->protected_->verify)
531 encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
532 encoder->private_->metadata.type = FLAC__METADATA_TYPE_STREAMINFO;
533 encoder->private_->metadata.is_last = (encoder->protected_->num_metadata_blocks == 0);
534 encoder->private_->metadata.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
535 encoder->private_->metadata.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
536 encoder->private_->metadata.data.stream_info.max_blocksize = encoder->protected_->blocksize;
537 encoder->private_->metadata.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
538 encoder->private_->metadata.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
539 encoder->private_->metadata.data.stream_info.sample_rate = encoder->protected_->sample_rate;
540 encoder->private_->metadata.data.stream_info.channels = encoder->protected_->channels;
541 encoder->private_->metadata.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
542 encoder->private_->metadata.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
543 memset(encoder->private_->metadata.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
544 MD5Init(&encoder->private_->md5context);
545 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
546 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
549 if(!FLAC__add_metadata_block(&encoder->private_->metadata, encoder->private_->frame))
550 return encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
551 if(!write_bitbuffer_(encoder, 0)) {
552 /* the above function sets the state for us in case of an error */
553 return encoder->protected_->state;
557 * Now that the STREAMINFO block is written, we can init this to an
558 * absurdly-high value...
560 encoder->private_->metadata.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
561 /* ... and clear this to 0 */
562 encoder->private_->metadata.data.stream_info.total_samples = 0;
565 * write the user's metadata blocks
567 for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
568 encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
569 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
570 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
573 if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame))
574 return encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
575 if(!write_bitbuffer_(encoder, 0)) {
576 /* the above function sets the state for us in case of an error */
577 return encoder->protected_->state;
581 if(encoder->protected_->verify)
582 encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
584 return encoder->protected_->state;
587 void FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
589 FLAC__ASSERT(0 != encoder);
590 if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
592 if(encoder->private_->current_sample_number != 0) {
593 encoder->protected_->blocksize = encoder->private_->current_sample_number;
594 process_frame_(encoder, true); /* true => is last frame */
596 MD5Final(encoder->private_->metadata.data.stream_info.md5sum, &encoder->private_->md5context);
597 encoder->private_->metadata_callback(encoder, &encoder->private_->metadata, encoder->private_->client_data);
599 if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder)
600 FLAC__stream_decoder_finish(encoder->private_->verify.decoder);
603 set_defaults_(encoder);
605 encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
608 FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
610 FLAC__ASSERT(0 != encoder);
611 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
613 encoder->protected_->verify = value;
617 FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
619 FLAC__ASSERT(0 != encoder);
620 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
622 encoder->protected_->streamable_subset = value;
626 FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
628 FLAC__ASSERT(0 != encoder);
629 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
631 encoder->protected_->do_mid_side_stereo = value;
635 FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
637 FLAC__ASSERT(0 != encoder);
638 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
640 encoder->protected_->loose_mid_side_stereo = value;
644 FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
646 FLAC__ASSERT(0 != encoder);
647 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
649 encoder->protected_->channels = value;
653 FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
655 FLAC__ASSERT(0 != encoder);
656 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
658 encoder->protected_->bits_per_sample = value;
662 FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
664 FLAC__ASSERT(0 != encoder);
665 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
667 encoder->protected_->sample_rate = value;
671 FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
673 FLAC__ASSERT(0 != encoder);
674 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
676 encoder->protected_->blocksize = value;
680 FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
682 FLAC__ASSERT(0 != encoder);
683 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
685 encoder->protected_->max_lpc_order = value;
689 FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
691 FLAC__ASSERT(0 != encoder);
692 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
694 encoder->protected_->qlp_coeff_precision = value;
698 FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
700 FLAC__ASSERT(0 != encoder);
701 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
703 encoder->protected_->do_qlp_coeff_prec_search = value;
707 FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
709 FLAC__ASSERT(0 != encoder);
710 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
714 encoder->protected_->do_escape_coding = value;
721 FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
723 FLAC__ASSERT(0 != encoder);
724 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
726 encoder->protected_->do_exhaustive_model_search = value;
730 FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
732 FLAC__ASSERT(0 != encoder);
733 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
735 encoder->protected_->min_residual_partition_order = value;
739 FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
741 FLAC__ASSERT(0 != encoder);
742 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
744 encoder->protected_->max_residual_partition_order = value;
748 FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
750 FLAC__ASSERT(0 != encoder);
751 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
755 encoder->protected_->rice_parameter_search_dist = value;
762 FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
764 FLAC__ASSERT(0 != encoder);
765 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
767 encoder->protected_->total_samples_estimate = value;
771 FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
773 FLAC__ASSERT(0 != encoder);
774 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
776 encoder->protected_->metadata = metadata;
777 encoder->protected_->num_metadata_blocks = num_blocks;
781 FLAC__bool FLAC__stream_encoder_set_write_callback(FLAC__StreamEncoder *encoder, FLAC__StreamEncoderWriteCallback value)
783 FLAC__ASSERT(0 != encoder);
784 FLAC__ASSERT(0 != value);
785 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
787 encoder->private_->write_callback = value;
791 FLAC__bool FLAC__stream_encoder_set_metadata_callback(FLAC__StreamEncoder *encoder, FLAC__StreamEncoderMetadataCallback value)
793 FLAC__ASSERT(0 != encoder);
794 FLAC__ASSERT(0 != value);
795 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
797 encoder->private_->metadata_callback = value;
801 FLAC__bool FLAC__stream_encoder_set_client_data(FLAC__StreamEncoder *encoder, void *value)
803 FLAC__ASSERT(0 != encoder);
804 if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
806 encoder->private_->client_data = value;
810 FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
812 FLAC__ASSERT(0 != encoder);
813 return encoder->protected_->state;
816 FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
818 FLAC__ASSERT(0 != encoder);
819 if(encoder->protected_->verify)
820 return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
822 return FLAC__STREAM_DECODER_UNINITIALIZED;
825 FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
827 FLAC__ASSERT(0 != encoder);
828 return encoder->protected_->verify;
831 FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
833 FLAC__ASSERT(0 != encoder);
834 return encoder->protected_->streamable_subset;
837 FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
839 FLAC__ASSERT(0 != encoder);
840 return encoder->protected_->do_mid_side_stereo;
843 FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
845 FLAC__ASSERT(0 != encoder);
846 return encoder->protected_->loose_mid_side_stereo;
849 unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
851 FLAC__ASSERT(0 != encoder);
852 return encoder->protected_->channels;
855 unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
857 FLAC__ASSERT(0 != encoder);
858 return encoder->protected_->bits_per_sample;
861 unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
863 FLAC__ASSERT(0 != encoder);
864 return encoder->protected_->sample_rate;
867 unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
869 FLAC__ASSERT(0 != encoder);
870 return encoder->protected_->blocksize;
873 unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
875 FLAC__ASSERT(0 != encoder);
876 return encoder->protected_->max_lpc_order;
879 unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
881 FLAC__ASSERT(0 != encoder);
882 return encoder->protected_->qlp_coeff_precision;
885 FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
887 FLAC__ASSERT(0 != encoder);
888 return encoder->protected_->do_qlp_coeff_prec_search;
891 FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
893 FLAC__ASSERT(0 != encoder);
894 return encoder->protected_->do_escape_coding;
897 FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
899 FLAC__ASSERT(0 != encoder);
900 return encoder->protected_->do_exhaustive_model_search;
903 unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
905 FLAC__ASSERT(0 != encoder);
906 return encoder->protected_->min_residual_partition_order;
909 unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
911 FLAC__ASSERT(0 != encoder);
912 return encoder->protected_->max_residual_partition_order;
915 unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
917 FLAC__ASSERT(0 != encoder);
918 return encoder->protected_->rice_parameter_search_dist;
921 FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
923 FLAC__ASSERT(0 != encoder);
924 return encoder->protected_->total_samples_estimate;
927 FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
929 unsigned i, j, channel;
930 FLAC__int32 x, mid, side;
931 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
933 FLAC__ASSERT(0 != encoder);
934 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
937 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
939 if(encoder->protected_->verify)
940 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
942 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
943 x = mid = side = buffer[0][j];
944 encoder->private_->integer_signal[0][i] = x;
945 encoder->private_->real_signal[0][i] = (FLAC__real)x;
947 encoder->private_->integer_signal[1][i] = x;
948 encoder->private_->real_signal[1][i] = (FLAC__real)x;
951 mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
952 encoder->private_->integer_signal_mid_side[1][i] = side;
953 encoder->private_->integer_signal_mid_side[0][i] = mid;
954 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
955 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
956 encoder->private_->current_sample_number++;
959 if(!process_frame_(encoder, false)) /* false => not last frame */
962 } while(j < samples);
966 if(encoder->protected_->verify)
967 append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
969 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
970 for(channel = 0; channel < channels; channel++) {
971 x = buffer[channel][j];
972 encoder->private_->integer_signal[channel][i] = x;
973 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
975 encoder->private_->current_sample_number++;
978 if(!process_frame_(encoder, false)) /* false => not last frame */
981 } while(j < samples);
987 FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
989 unsigned i, j, k, channel;
990 FLAC__int32 x, mid, side;
991 const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
993 FLAC__ASSERT(0 != encoder);
994 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
997 if(encoder->protected_->do_mid_side_stereo && channels == 2) {
999 if(encoder->protected_->verify)
1000 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1002 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1003 x = mid = side = buffer[k++];
1004 encoder->private_->integer_signal[0][i] = x;
1005 encoder->private_->real_signal[0][i] = (FLAC__real)x;
1007 encoder->private_->integer_signal[1][i] = x;
1008 encoder->private_->real_signal[1][i] = (FLAC__real)x;
1011 mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
1012 encoder->private_->integer_signal_mid_side[1][i] = side;
1013 encoder->private_->integer_signal_mid_side[0][i] = mid;
1014 encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side;
1015 encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid;
1016 encoder->private_->current_sample_number++;
1018 if(i == blocksize) {
1019 if(!process_frame_(encoder, false)) /* false => not last frame */
1022 } while(j < samples);
1026 if(encoder->protected_->verify)
1027 append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j));
1029 for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) {
1030 for(channel = 0; channel < channels; channel++) {
1032 encoder->private_->integer_signal[channel][i] = x;
1033 encoder->private_->real_signal[channel][i] = (FLAC__real)x;
1035 encoder->private_->current_sample_number++;
1037 if(i == blocksize) {
1038 if(!process_frame_(encoder, false)) /* false => not last frame */
1041 } while(j < samples);
1047 /***********************************************************************
1049 * Private class methods
1051 ***********************************************************************/
1053 void set_defaults_(FLAC__StreamEncoder *encoder)
1055 FLAC__ASSERT(0 != encoder);
1057 encoder->protected_->verify = false;
1058 encoder->protected_->streamable_subset = true;
1059 encoder->protected_->do_mid_side_stereo = false;
1060 encoder->protected_->loose_mid_side_stereo = false;
1061 encoder->protected_->channels = 2;
1062 encoder->protected_->bits_per_sample = 16;
1063 encoder->protected_->sample_rate = 44100;
1064 encoder->protected_->blocksize = 1152;
1065 encoder->protected_->max_lpc_order = 0;
1066 encoder->protected_->qlp_coeff_precision = 0;
1067 encoder->protected_->do_qlp_coeff_prec_search = false;
1068 encoder->protected_->do_exhaustive_model_search = false;
1069 encoder->protected_->do_escape_coding = false;
1070 encoder->protected_->min_residual_partition_order = 0;
1071 encoder->protected_->max_residual_partition_order = 0;
1072 encoder->protected_->rice_parameter_search_dist = 0;
1073 encoder->protected_->total_samples_estimate = 0;
1074 encoder->protected_->metadata = 0;
1075 encoder->protected_->num_metadata_blocks = 0;
1077 encoder->private_->write_callback = 0;
1078 encoder->private_->metadata_callback = 0;
1079 encoder->private_->client_data = 0;
1082 void free_(FLAC__StreamEncoder *encoder)
1084 unsigned i, channel;
1086 FLAC__ASSERT(0 != encoder);
1087 for(i = 0; i < encoder->protected_->channels; i++) {
1088 if(0 != encoder->private_->integer_signal_unaligned[i]) {
1089 free(encoder->private_->integer_signal_unaligned[i]);
1090 encoder->private_->integer_signal_unaligned[i] = 0;
1092 if(0 != encoder->private_->real_signal_unaligned[i]) {
1093 free(encoder->private_->real_signal_unaligned[i]);
1094 encoder->private_->real_signal_unaligned[i] = 0;
1097 for(i = 0; i < 2; i++) {
1098 if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
1099 free(encoder->private_->integer_signal_mid_side_unaligned[i]);
1100 encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
1102 if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
1103 free(encoder->private_->real_signal_mid_side_unaligned[i]);
1104 encoder->private_->real_signal_mid_side_unaligned[i] = 0;
1107 for(channel = 0; channel < encoder->protected_->channels; channel++) {
1108 for(i = 0; i < 2; i++) {
1109 if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
1110 free(encoder->private_->residual_workspace_unaligned[channel][i]);
1111 encoder->private_->residual_workspace_unaligned[channel][i] = 0;
1115 for(channel = 0; channel < 2; channel++) {
1116 for(i = 0; i < 2; i++) {
1117 if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
1118 free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
1119 encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
1123 if(0 != encoder->private_->abs_residual_unaligned) {
1124 free(encoder->private_->abs_residual_unaligned);
1125 encoder->private_->abs_residual_unaligned = 0;
1127 if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
1128 free(encoder->private_->abs_residual_partition_sums_unaligned);
1129 encoder->private_->abs_residual_partition_sums_unaligned = 0;
1131 if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
1132 free(encoder->private_->raw_bits_per_partition_unaligned);
1133 encoder->private_->raw_bits_per_partition_unaligned = 0;
1135 if(encoder->protected_->verify) {
1136 for(i = 0; i < encoder->protected_->channels; i++) {
1137 if(0 != encoder->private_->verify.input_fifo.data[i]) {
1138 free(encoder->private_->verify.input_fifo.data[i]);
1139 encoder->private_->verify.input_fifo.data[i] = 0;
1143 FLAC__bitbuffer_free(encoder->private_->frame);
1146 FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_size)
1149 unsigned i, channel;
1151 FLAC__ASSERT(new_size > 0);
1152 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1153 FLAC__ASSERT(encoder->private_->current_sample_number == 0);
1155 /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
1156 if(new_size <= encoder->private_->input_capacity)
1161 /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx() requires that the input arrays (in our case the integer signals) have a buffer of up to 3 zeroes in front (at negative indices) for alignment purposes; we use 4 to keep the data well-aligned. */
1163 for(i = 0; ok && i < encoder->protected_->channels; i++) {
1164 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size+4, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
1165 ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
1166 memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
1167 encoder->private_->integer_signal[i] += 4;
1169 for(i = 0; ok && i < 2; i++) {
1170 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size+4, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]);
1171 ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]);
1172 memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
1173 encoder->private_->integer_signal_mid_side[i] += 4;
1175 for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
1176 for(i = 0; ok && i < 2; i++) {
1177 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
1180 for(channel = 0; ok && channel < 2; channel++) {
1181 for(i = 0; ok && i < 2; i++) {
1182 ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]);
1185 ok = ok && FLAC__memory_alloc_aligned_uint32_array(new_size, &encoder->private_->abs_residual_unaligned, &encoder->private_->abs_residual);
1186 if(encoder->private_->precompute_partition_sums || encoder->protected_->do_escape_coding) /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */
1187 ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_size * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
1188 if(encoder->protected_->do_escape_coding)
1189 ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_size * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
1192 encoder->private_->input_capacity = new_size;
1194 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1199 FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples)
1201 const FLAC__byte *buffer;
1204 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
1206 FLAC__bitbuffer_get_buffer(encoder->private_->frame, &buffer, &bytes);
1208 if(encoder->protected_->verify) {
1209 encoder->private_->verify.output.data = buffer;
1210 encoder->private_->verify.output.bytes = bytes;
1211 if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
1212 encoder->private_->verify.needs_magic_hack = true;
1215 if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
1216 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
1217 if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
1218 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
1224 if(encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
1225 encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_WRITING;
1229 FLAC__bitbuffer_release_buffer(encoder->private_->frame);
1232 encoder->private_->metadata.data.stream_info.min_framesize = min(bytes, encoder->private_->metadata.data.stream_info.min_framesize);
1233 encoder->private_->metadata.data.stream_info.max_framesize = max(bytes, encoder->private_->metadata.data.stream_info.max_framesize);
1239 FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame)
1241 FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
1244 * Accumulate raw signal to the MD5 signature
1246 if(!FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) {
1247 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1252 * Process the frame header and subframes into the frame bitbuffer
1254 if(!process_subframes_(encoder, is_last_frame)) {
1255 /* the above function sets the state for us in case of an error */
1260 * Zero-pad the frame to a byte_boundary
1262 if(!FLAC__bitbuffer_zero_pad_to_byte_boundary(encoder->private_->frame)) {
1263 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1268 * CRC-16 the whole thing
1270 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame));
1271 FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__bitbuffer_get_write_crc16(encoder->private_->frame), FLAC__FRAME_FOOTER_CRC_LEN);
1276 if(!write_bitbuffer_(encoder, encoder->protected_->blocksize)) {
1277 /* the above function sets the state for us in case of an error */
1282 * Get ready for the next frame
1284 encoder->private_->current_sample_number = 0;
1285 encoder->private_->current_frame_number++;
1286 encoder->private_->metadata.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
1291 FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame)
1293 FLAC__FrameHeader frame_header;
1294 unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
1295 FLAC__bool do_independent, do_mid_side, precompute_partition_sums;
1298 * Calculate the min,max Rice partition orders
1301 max_partition_order = 0;
1304 unsigned limit = 0, b = encoder->protected_->blocksize;
1309 max_partition_order = min(encoder->protected_->max_residual_partition_order, limit);
1311 min_partition_order = min(min_partition_order, max_partition_order);
1313 precompute_partition_sums = encoder->private_->precompute_partition_sums && ((max_partition_order > min_partition_order) || encoder->protected_->do_escape_coding);
1318 if(!FLAC__bitbuffer_clear(encoder->private_->frame)) {
1319 encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
1322 frame_header.blocksize = encoder->protected_->blocksize;
1323 frame_header.sample_rate = encoder->protected_->sample_rate;
1324 frame_header.channels = encoder->protected_->channels;
1325 frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
1326 frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
1327 frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
1328 frame_header.number.frame_number = encoder->private_->current_frame_number;
1331 * Figure out what channel assignments to try
1333 if(encoder->protected_->do_mid_side_stereo) {
1334 if(encoder->protected_->loose_mid_side_stereo) {
1335 if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
1336 do_independent = true;
1340 do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
1341 do_mid_side = !do_independent;
1345 do_independent = true;
1350 do_independent = true;
1351 do_mid_side = false;
1354 FLAC__ASSERT(do_independent || do_mid_side);
1357 * Check for wasted bits; set effective bps for each subframe
1359 if(do_independent) {
1361 for(channel = 0; channel < encoder->protected_->channels; channel++) {
1362 w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
1363 encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
1364 encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
1369 FLAC__ASSERT(encoder->protected_->channels == 2);
1370 for(channel = 0; channel < 2; channel++) {
1371 w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
1372 encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
1373 encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
1378 * First do a normal encoding pass of each independent channel
1380 if(do_independent) {
1381 for(channel = 0; channel < encoder->protected_->channels; channel++) {
1382 if(!process_subframe_(encoder, min_partition_order, max_partition_order, precompute_partition_sums, false, &frame_header, encoder->private_->subframe_bps[channel], encoder->private_->integer_signal[channel], encoder->private_->real_signal[channel], encoder->private_->subframe_workspace_ptr[channel], encoder->private_->residual_workspace[channel], encoder->private_->best_subframe+channel, encoder->private_->best_subframe_bits+channel))
1388 * Now do mid and side channels if requested
1391 FLAC__ASSERT(encoder->protected_->channels == 2);
1393 for(channel = 0; channel < 2; channel++) {
1394 if(!process_subframe_(encoder, min_partition_order, max_partition_order, precompute_partition_sums, false, &frame_header, encoder->private_->subframe_bps_mid_side[channel], encoder->private_->integer_signal_mid_side[channel], encoder->private_->real_signal_mid_side[channel], encoder->private_->subframe_workspace_ptr_mid_side[channel], encoder->private_->residual_workspace_mid_side[channel], encoder->private_->best_subframe_mid_side+channel, encoder->private_->best_subframe_bits_mid_side+channel))
1400 * Compose the frame bitbuffer
1403 unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
1404 FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
1405 FLAC__ChannelAssignment channel_assignment;
1407 FLAC__ASSERT(encoder->protected_->channels == 2);
1409 if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
1410 channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
1413 unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
1415 FLAC__ChannelAssignment ca;
1417 FLAC__ASSERT(do_independent && do_mid_side);
1419 /* We have to figure out which channel assignent results in the smallest frame */
1420 bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
1421 bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
1422 bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
1423 bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
1425 for(channel_assignment = 0, min_bits = bits[0], ca = 1; ca <= 3; ca++) {
1426 if(bits[ca] < min_bits) {
1427 min_bits = bits[ca];
1428 channel_assignment = ca;
1433 frame_header.channel_assignment = channel_assignment;
1435 if(!FLAC__frame_add_header(&frame_header, encoder->protected_->streamable_subset, is_last_frame, encoder->private_->frame)) {
1436 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1440 switch(channel_assignment) {
1441 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
1442 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
1443 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
1445 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
1446 left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
1447 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
1449 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
1450 left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
1451 right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
1453 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
1454 left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
1455 right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
1461 switch(channel_assignment) {
1462 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
1463 left_bps = encoder->private_->subframe_bps [0];
1464 right_bps = encoder->private_->subframe_bps [1];
1466 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
1467 left_bps = encoder->private_->subframe_bps [0];
1468 right_bps = encoder->private_->subframe_bps_mid_side[1];
1470 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
1471 left_bps = encoder->private_->subframe_bps_mid_side[1];
1472 right_bps = encoder->private_->subframe_bps [1];
1474 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
1475 left_bps = encoder->private_->subframe_bps_mid_side[0];
1476 right_bps = encoder->private_->subframe_bps_mid_side[1];
1482 /* note that encoder_add_subframe_ sets the state for us in case of an error */
1483 if(!add_subframe_(encoder, &frame_header, left_bps , left_subframe , encoder->private_->frame))
1485 if(!add_subframe_(encoder, &frame_header, right_bps, right_subframe, encoder->private_->frame))
1489 if(!FLAC__frame_add_header(&frame_header, encoder->protected_->streamable_subset, is_last_frame, encoder->private_->frame)) {
1490 encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
1494 for(channel = 0; channel < encoder->protected_->channels; channel++) {
1495 if(!add_subframe_(encoder, &frame_header, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) {
1496 /* the above function sets the state for us in case of an error */
1502 if(encoder->protected_->loose_mid_side_stereo) {
1503 encoder->private_->loose_mid_side_stereo_frame_count++;
1504 if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
1505 encoder->private_->loose_mid_side_stereo_frame_count = 0;
1508 encoder->private_->last_channel_assignment = frame_header.channel_assignment;
1513 FLAC__bool process_subframe_(FLAC__StreamEncoder *encoder, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool verbatim_only, const FLAC__FrameHeader *frame_header, unsigned subframe_bps, const FLAC__int32 integer_signal[], const FLAC__real real_signal[], FLAC__Subframe *subframe[2], FLAC__int32 *residual[2], unsigned *best_subframe, unsigned *best_bits)
1515 FLAC__real fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
1516 FLAC__real lpc_residual_bits_per_sample;
1517 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 */
1518 FLAC__real lpc_error[FLAC__MAX_LPC_ORDER];
1519 unsigned min_lpc_order, max_lpc_order, lpc_order;
1520 unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
1521 unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
1522 unsigned rice_parameter;
1523 unsigned _candidate_bits, _best_bits;
1524 unsigned _best_subframe;
1526 /* verbatim subframe is the baseline against which we measure other compressed subframes */
1528 _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
1530 if(!verbatim_only && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
1531 /* check for constant subframe */
1532 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);
1533 if(fixed_residual_bits_per_sample[1] == 0.0) {
1534 /* the above means integer_signal+FLAC__MAX_FIXED_ORDER is constant, now we just have to check the warmup samples */
1535 unsigned i, signal_is_constant = true;
1536 for(i = 1; i <= FLAC__MAX_FIXED_ORDER; i++) {
1537 if(integer_signal[0] != integer_signal[i]) {
1538 signal_is_constant = false;
1542 if(signal_is_constant) {
1543 _candidate_bits = evaluate_constant_subframe_(integer_signal[0], subframe_bps, subframe[!_best_subframe]);
1544 if(_candidate_bits < _best_bits) {
1545 _best_subframe = !_best_subframe;
1546 _best_bits = _candidate_bits;
1552 if(encoder->protected_->do_exhaustive_model_search) {
1553 min_fixed_order = 0;
1554 max_fixed_order = FLAC__MAX_FIXED_ORDER;
1557 min_fixed_order = max_fixed_order = guess_fixed_order;
1559 for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
1560 if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__real)subframe_bps)
1561 continue; /* don't even try */
1562 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 */
1563 #ifndef FLAC__SYMMETRIC_RICE
1564 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
1566 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
1567 #ifdef DEBUG_VERBOSE
1568 fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
1570 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
1572 _candidate_bits = evaluate_fixed_subframe_(encoder, integer_signal, residual[!_best_subframe], encoder->private_->abs_residual, encoder->private_->abs_residual_partition_sums, encoder->private_->raw_bits_per_partition, frame_header->blocksize, subframe_bps, fixed_order, rice_parameter, min_partition_order, max_partition_order, precompute_partition_sums, encoder->protected_->do_escape_coding, encoder->protected_->rice_parameter_search_dist, subframe[!_best_subframe]);
1573 if(_candidate_bits < _best_bits) {
1574 _best_subframe = !_best_subframe;
1575 _best_bits = _candidate_bits;
1580 if(encoder->protected_->max_lpc_order > 0) {
1581 if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
1582 max_lpc_order = frame_header->blocksize-1;
1584 max_lpc_order = encoder->protected_->max_lpc_order;
1585 if(max_lpc_order > 0) {
1586 encoder->private_->local_lpc_compute_autocorrelation(real_signal, frame_header->blocksize, max_lpc_order+1, autoc);
1587 /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
1588 if(autoc[0] != 0.0) {
1589 FLAC__lpc_compute_lp_coefficients(autoc, max_lpc_order, encoder->private_->lp_coeff, lpc_error);
1590 if(encoder->protected_->do_exhaustive_model_search) {
1594 unsigned guess_lpc_order = FLAC__lpc_compute_best_order(lpc_error, max_lpc_order, frame_header->blocksize, subframe_bps);
1595 min_lpc_order = max_lpc_order = guess_lpc_order;
1597 if(encoder->protected_->do_qlp_coeff_prec_search) {
1598 min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
1599 max_qlp_coeff_precision = min(8*sizeof(FLAC__int32) - subframe_bps - 1 - 2, (1u<<FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN)-1); /* -2 to keep things 32-bit safe */
1602 min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
1604 for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
1605 lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
1606 if(lpc_residual_bits_per_sample >= (FLAC__real)subframe_bps)
1607 continue; /* don't even try */
1608 rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
1609 #ifndef FLAC__SYMMETRIC_RICE
1610 rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
1612 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
1613 #ifdef DEBUG_VERBOSE
1614 fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
1616 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
1618 for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
1619 _candidate_bits = evaluate_lpc_subframe_(encoder, integer_signal, residual[!_best_subframe], encoder->private_->abs_residual, encoder->private_->abs_residual_partition_sums, encoder->private_->raw_bits_per_partition, encoder->private_->lp_coeff[lpc_order-1], frame_header->blocksize, subframe_bps, lpc_order, qlp_coeff_precision, rice_parameter, min_partition_order, max_partition_order, precompute_partition_sums, encoder->protected_->do_escape_coding, encoder->protected_->rice_parameter_search_dist, subframe[!_best_subframe]);
1620 if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
1621 if(_candidate_bits < _best_bits) {
1622 _best_subframe = !_best_subframe;
1623 _best_bits = _candidate_bits;
1634 *best_subframe = _best_subframe;
1635 *best_bits = _best_bits;
1640 FLAC__bool add_subframe_(FLAC__StreamEncoder *encoder, const FLAC__FrameHeader *frame_header, unsigned subframe_bps, const FLAC__Subframe *subframe, FLAC__BitBuffer *frame)
1642 switch(subframe->type) {
1643 case FLAC__SUBFRAME_TYPE_CONSTANT:
1644 if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
1645 encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING;
1649 case FLAC__SUBFRAME_TYPE_FIXED:
1650 if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), frame_header->blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
1651 encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING;
1655 case FLAC__SUBFRAME_TYPE_LPC:
1656 if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), frame_header->blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
1657 encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING;
1661 case FLAC__SUBFRAME_TYPE_VERBATIM:
1662 if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), frame_header->blocksize, subframe_bps, subframe->wasted_bits, frame)) {
1663 encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING;
1674 unsigned evaluate_constant_subframe_(const FLAC__int32 signal, unsigned subframe_bps, FLAC__Subframe *subframe)
1676 subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
1677 subframe->data.constant.value = signal;
1679 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe_bps;
1682 unsigned evaluate_fixed_subframe_(FLAC__StreamEncoder *encoder, const FLAC__int32 signal[], FLAC__int32 residual[], FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned raw_bits_per_partition[], unsigned blocksize, unsigned subframe_bps, unsigned order, unsigned rice_parameter, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool do_escape_coding, unsigned rice_parameter_search_dist, FLAC__Subframe *subframe)
1684 unsigned i, residual_bits;
1685 const unsigned residual_samples = blocksize - order;
1687 FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
1689 subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
1691 subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
1692 subframe->data.fixed.residual = residual;
1694 residual_bits = find_best_partition_order_(encoder->private_, residual, abs_residual, abs_residual_partition_sums, raw_bits_per_partition, residual_samples, order, rice_parameter, min_partition_order, max_partition_order, precompute_partition_sums, do_escape_coding, rice_parameter_search_dist, &subframe->data.fixed.entropy_coding_method.data.partitioned_rice.order, subframe->data.fixed.entropy_coding_method.data.partitioned_rice.parameters, subframe->data.fixed.entropy_coding_method.data.partitioned_rice.raw_bits);
1696 subframe->data.fixed.order = order;
1697 for(i = 0; i < order; i++)
1698 subframe->data.fixed.warmup[i] = signal[i];
1700 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (order * subframe_bps) + residual_bits;
1703 unsigned evaluate_lpc_subframe_(FLAC__StreamEncoder *encoder, const FLAC__int32 signal[], FLAC__int32 residual[], FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned raw_bits_per_partition[], const FLAC__real lp_coeff[], unsigned blocksize, unsigned subframe_bps, unsigned order, unsigned qlp_coeff_precision, unsigned rice_parameter, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool do_escape_coding, unsigned rice_parameter_search_dist, FLAC__Subframe *subframe)
1705 FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
1706 unsigned i, residual_bits;
1707 int quantization, ret;
1708 const unsigned residual_samples = blocksize - order;
1710 ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, subframe_bps, qlp_coeff, &quantization);
1712 return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
1714 if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
1715 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
1717 encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
1719 subframe->type = FLAC__SUBFRAME_TYPE_LPC;
1721 subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
1722 subframe->data.lpc.residual = residual;
1724 residual_bits = find_best_partition_order_(encoder->private_, residual, abs_residual, abs_residual_partition_sums, raw_bits_per_partition, residual_samples, order, rice_parameter, min_partition_order, max_partition_order, precompute_partition_sums, do_escape_coding, rice_parameter_search_dist, &subframe->data.lpc.entropy_coding_method.data.partitioned_rice.order, subframe->data.lpc.entropy_coding_method.data.partitioned_rice.parameters, subframe->data.lpc.entropy_coding_method.data.partitioned_rice.raw_bits);
1726 subframe->data.lpc.order = order;
1727 subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
1728 subframe->data.lpc.quantization_level = quantization;
1729 memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
1730 for(i = 0; i < order; i++)
1731 subframe->data.lpc.warmup[i] = signal[i];
1733 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits;
1736 unsigned evaluate_verbatim_subframe_(const FLAC__int32 signal[], unsigned blocksize, unsigned subframe_bps, FLAC__Subframe *subframe)
1738 subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
1740 subframe->data.verbatim.data = signal;
1742 return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (blocksize * subframe_bps);
1745 unsigned find_best_partition_order_(FLAC__StreamEncoderPrivate *private_, const FLAC__int32 residual[], FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned raw_bits_per_partition[], unsigned residual_samples, unsigned predictor_order, unsigned rice_parameter, unsigned min_partition_order, unsigned max_partition_order, FLAC__bool precompute_partition_sums, FLAC__bool do_escape_coding, unsigned rice_parameter_search_dist, unsigned *best_partition_order, unsigned best_parameters[], unsigned best_raw_bits[])
1748 unsigned residual_bits, best_residual_bits = 0;
1749 unsigned residual_sample;
1750 unsigned best_parameters_index = 0;
1751 const unsigned blocksize = residual_samples + predictor_order;
1753 /* compute abs(residual) for use later */
1754 for(residual_sample = 0; residual_sample < residual_samples; residual_sample++) {
1755 r = residual[residual_sample];
1756 abs_residual[residual_sample] = (FLAC__uint32)(r<0? -r : r);
1759 while(max_partition_order > 0 && blocksize >> max_partition_order <= predictor_order)
1760 max_partition_order--;
1761 FLAC__ASSERT(blocksize >> max_partition_order > predictor_order);
1762 min_partition_order = min(min_partition_order, max_partition_order);
1764 if(precompute_partition_sums) {
1765 int partition_order;
1768 precompute_partition_info_sums_(abs_residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order);
1770 if(do_escape_coding)
1771 precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
1773 for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
1774 #ifdef DONT_ESTIMATE_RICE_BITS
1775 if(!set_partitioned_rice_with_precompute_(residual, abs_residual_partition_sums+sum, raw_bits_per_partition+sum, residual_samples, predictor_order, rice_parameter, rice_parameter_search_dist, (unsigned)partition_order, do_escape_coding, private_->parameters[!best_parameters_index], private_->raw_bits[!best_parameters_index], &residual_bits))
1777 if(!set_partitioned_rice_with_precompute_(abs_residual, abs_residual_partition_sums+sum, raw_bits_per_partition+sum, residual_samples, predictor_order, rice_parameter, rice_parameter_search_dist, (unsigned)partition_order, do_escape_coding, private_->parameters[!best_parameters_index], private_->raw_bits[!best_parameters_index], &residual_bits))
1780 FLAC__ASSERT(best_residual_bits != 0);
1783 sum += 1u << partition_order;
1784 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
1785 best_residual_bits = residual_bits;
1786 *best_partition_order = partition_order;
1787 best_parameters_index = !best_parameters_index;
1792 unsigned partition_order;
1793 for(partition_order = min_partition_order; partition_order <= max_partition_order; partition_order++) {
1794 #ifdef DONT_ESTIMATE_RICE_BITS
1795 if(!set_partitioned_rice_(abs_residual, residual, residual_samples, predictor_order, rice_parameter, rice_parameter_search_dist, partition_order, private_->parameters[!best_parameters_index], &residual_bits))
1797 if(!set_partitioned_rice_(abs_residual, residual_samples, predictor_order, rice_parameter, rice_parameter_search_dist, partition_order, private_->parameters[!best_parameters_index], &residual_bits))
1800 FLAC__ASSERT(best_residual_bits != 0);
1803 if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
1804 best_residual_bits = residual_bits;
1805 *best_partition_order = partition_order;
1806 best_parameters_index = !best_parameters_index;
1811 memcpy(best_parameters, private_->parameters[best_parameters_index], sizeof(unsigned)*(1<<(*best_partition_order)));
1812 memcpy(best_raw_bits, private_->raw_bits[best_parameters_index], sizeof(unsigned)*(1<<(*best_partition_order)));
1814 return best_residual_bits;
1817 void precompute_partition_info_sums_(const FLAC__uint32 abs_residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned residual_samples, unsigned predictor_order, unsigned min_partition_order, unsigned max_partition_order)
1819 int partition_order;
1820 unsigned from_partition, to_partition = 0;
1821 const unsigned blocksize = residual_samples + predictor_order;
1823 /* first do max_partition_order */
1824 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
1825 FLAC__uint64 abs_residual_partition_sum;
1827 unsigned partition, partition_sample, partition_samples, residual_sample;
1828 const unsigned partitions = 1u << partition_order;
1829 const unsigned default_partition_samples = blocksize >> partition_order;
1831 FLAC__ASSERT(default_partition_samples > predictor_order);
1833 for(partition = residual_sample = 0; partition < partitions; partition++) {
1834 partition_samples = default_partition_samples;
1836 partition_samples -= predictor_order;
1837 abs_residual_partition_sum = 0;
1838 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
1839 abs_r = abs_residual[residual_sample];
1840 abs_residual_partition_sum += abs_r;
1843 abs_residual_partition_sums[partition] = abs_residual_partition_sum;
1845 to_partition = partitions;
1849 /* now merge partitions for lower orders */
1850 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
1853 const unsigned partitions = 1u << partition_order;
1854 for(i = 0; i < partitions; i++) {
1855 s = abs_residual_partition_sums[from_partition];
1857 abs_residual_partition_sums[to_partition] = s + abs_residual_partition_sums[from_partition];
1864 void precompute_partition_info_escapes_(const FLAC__int32 residual[], unsigned raw_bits_per_partition[], unsigned residual_samples, unsigned predictor_order, unsigned min_partition_order, unsigned max_partition_order)
1866 int partition_order;
1867 unsigned from_partition, to_partition = 0;
1868 const unsigned blocksize = residual_samples + predictor_order;
1870 /* first do max_partition_order */
1871 for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
1872 FLAC__int32 r, residual_partition_min, residual_partition_max;
1873 unsigned silog2_min, silog2_max;
1874 unsigned partition, partition_sample, partition_samples, residual_sample;
1875 const unsigned partitions = 1u << partition_order;
1876 const unsigned default_partition_samples = blocksize >> partition_order;
1878 FLAC__ASSERT(default_partition_samples > predictor_order);
1880 for(partition = residual_sample = 0; partition < partitions; partition++) {
1881 partition_samples = default_partition_samples;
1883 partition_samples -= predictor_order;
1884 residual_partition_min = residual_partition_max = 0;
1885 for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
1886 r = residual[residual_sample];
1887 if(r < residual_partition_min)
1888 residual_partition_min = r;
1889 else if(r > residual_partition_max)
1890 residual_partition_max = r;
1893 silog2_min = FLAC__bitmath_silog2(residual_partition_min);
1894 silog2_max = FLAC__bitmath_silog2(residual_partition_max);
1895 raw_bits_per_partition[partition] = max(silog2_min, silog2_max);
1897 to_partition = partitions;
1901 /* now merge partitions for lower orders */
1902 for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
1905 const unsigned partitions = 1u << partition_order;
1906 for(i = 0; i < partitions; i++) {
1907 m = raw_bits_per_partition[from_partition];
1909 raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
1916 #ifdef VARIABLE_RICE_BITS
1917 #undef VARIABLE_RICE_BITS
1919 #ifndef DONT_ESTIMATE_RICE_BITS
1920 #define VARIABLE_RICE_BITS(value, parameter) ((value) >> (parameter))
1923 #ifdef DONT_ESTIMATE_RICE_BITS
1924 FLAC__bool set_partitioned_rice_(const FLAC__uint32 abs_residual[], const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, unsigned parameters[], unsigned *bits)
1926 FLAC__bool set_partitioned_rice_(const FLAC__uint32 abs_residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, unsigned parameters[], unsigned *bits)
1929 unsigned rice_parameter, partition_bits;
1930 #ifndef NO_RICE_SEARCH
1931 unsigned best_partition_bits;
1932 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
1934 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
1936 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
1938 if(partition_order == 0) {
1941 #ifndef NO_RICE_SEARCH
1942 if(rice_parameter_search_dist) {
1943 if(suggested_rice_parameter < rice_parameter_search_dist)
1944 min_rice_parameter = 0;
1946 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
1947 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
1948 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
1949 #ifdef DEBUG_VERBOSE
1950 fprintf(stderr, "clipping rice_parameter (%u -> %u) @2\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
1952 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
1956 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
1958 best_partition_bits = 0xffffffff;
1959 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
1961 #ifdef VARIABLE_RICE_BITS
1962 #ifdef FLAC__SYMMETRIC_RICE
1963 partition_bits = (2+rice_parameter) * residual_samples;
1965 const unsigned rice_parameter_estimate = rice_parameter-1;
1966 partition_bits = (1+rice_parameter) * residual_samples;
1971 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
1972 for(i = 0; i < residual_samples; i++) {
1973 #ifdef VARIABLE_RICE_BITS
1974 #ifdef FLAC__SYMMETRIC_RICE
1975 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter);
1977 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
1980 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
1983 #ifndef NO_RICE_SEARCH
1984 if(partition_bits < best_partition_bits) {
1985 best_rice_parameter = rice_parameter;
1986 best_partition_bits = partition_bits;
1990 parameters[0] = best_rice_parameter;
1991 bits_ += best_partition_bits;
1994 unsigned partition, residual_sample, save_residual_sample, partition_sample;
1995 unsigned partition_samples;
1996 FLAC__uint64 mean, k;
1997 const unsigned partitions = 1u << partition_order;
1998 for(partition = residual_sample = 0; partition < partitions; partition++) {
1999 partition_samples = (residual_samples+predictor_order) >> partition_order;
2000 if(partition == 0) {
2001 if(partition_samples <= predictor_order)
2004 partition_samples -= predictor_order;
2007 save_residual_sample = residual_sample;
2008 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++)
2009 mean += abs_residual[residual_sample];
2010 residual_sample = save_residual_sample;
2011 #ifdef FLAC__SYMMETRIC_RICE
2012 mean += partition_samples >> 1; /* for rounding effect */
2013 mean /= partition_samples;
2015 /* calc rice_parameter = floor(log2(mean)) */
2023 /* calc rice_parameter ala LOCO-I */
2024 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
2027 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
2028 #ifdef DEBUG_VERBOSE
2029 fprintf(stderr, "clipping rice_parameter (%u -> %u) @3\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
2031 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
2034 #ifndef NO_RICE_SEARCH
2035 if(rice_parameter_search_dist) {
2036 if(rice_parameter < rice_parameter_search_dist)
2037 min_rice_parameter = 0;
2039 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
2040 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
2041 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
2042 #ifdef DEBUG_VERBOSE
2043 fprintf(stderr, "clipping rice_parameter (%u -> %u) @4\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
2045 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
2049 min_rice_parameter = max_rice_parameter = rice_parameter;
2051 best_partition_bits = 0xffffffff;
2052 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
2054 #ifdef VARIABLE_RICE_BITS
2055 #ifdef FLAC__SYMMETRIC_RICE
2056 partition_bits = (2+rice_parameter) * partition_samples;
2058 const unsigned rice_parameter_estimate = rice_parameter-1;
2059 partition_bits = (1+rice_parameter) * partition_samples;
2064 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
2065 save_residual_sample = residual_sample;
2066 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
2067 #ifdef VARIABLE_RICE_BITS
2068 #ifdef FLAC__SYMMETRIC_RICE
2069 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter);
2071 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
2074 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */
2077 #ifndef NO_RICE_SEARCH
2078 if(rice_parameter != max_rice_parameter)
2079 residual_sample = save_residual_sample;
2080 if(partition_bits < best_partition_bits) {
2081 best_rice_parameter = rice_parameter;
2082 best_partition_bits = partition_bits;
2086 parameters[partition] = best_rice_parameter;
2087 bits_ += best_partition_bits;
2095 #ifdef DONT_ESTIMATE_RICE_BITS
2096 FLAC__bool set_partitioned_rice_with_precompute_(const FLAC__int32 residual[], const FLAC__uint64 abs_residual_partition_sums[], const unsigned raw_bits_per_partition[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, const FLAC__bool search_for_escapes, unsigned parameters[], unsigned raw_bits[], unsigned *bits)
2098 FLAC__bool set_partitioned_rice_with_precompute_(const FLAC__uint32 abs_residual[], const FLAC__uint64 abs_residual_partition_sums[], const unsigned raw_bits_per_partition[], const unsigned residual_samples, const unsigned predictor_order, const unsigned suggested_rice_parameter, const unsigned rice_parameter_search_dist, const unsigned partition_order, const FLAC__bool search_for_escapes, unsigned parameters[], unsigned raw_bits[], unsigned *bits)
2101 unsigned rice_parameter, partition_bits;
2102 #ifndef NO_RICE_SEARCH
2103 unsigned best_partition_bits;
2104 unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0;
2107 unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
2109 FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER);
2111 if(partition_order == 0) {
2114 #ifndef NO_RICE_SEARCH
2115 if(rice_parameter_search_dist) {
2116 if(suggested_rice_parameter < rice_parameter_search_dist)
2117 min_rice_parameter = 0;
2119 min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
2120 max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
2121 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
2122 #ifdef DEBUG_VERBOSE
2123 fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
2125 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
2129 min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
2131 best_partition_bits = 0xffffffff;
2132 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
2134 #ifdef VARIABLE_RICE_BITS
2135 #ifdef FLAC__SYMMETRIC_RICE
2136 partition_bits = (2+rice_parameter) * residual_samples;
2138 const unsigned rice_parameter_estimate = rice_parameter-1;
2139 partition_bits = (1+rice_parameter) * residual_samples;
2144 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
2145 for(i = 0; i < residual_samples; i++) {
2146 #ifdef VARIABLE_RICE_BITS
2147 #ifdef FLAC__SYMMETRIC_RICE
2148 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter);
2150 partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate);
2153 partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
2156 #ifndef NO_RICE_SEARCH
2157 if(partition_bits < best_partition_bits) {
2158 best_rice_parameter = rice_parameter;
2159 best_partition_bits = partition_bits;
2163 if(search_for_escapes) {
2164 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
2165 if(flat_bits <= best_partition_bits) {
2166 raw_bits[0] = raw_bits_per_partition[0];
2167 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
2168 best_partition_bits = flat_bits;
2171 parameters[0] = best_rice_parameter;
2172 bits_ += best_partition_bits;
2175 unsigned partition, residual_sample, save_residual_sample, partition_sample;
2176 unsigned partition_samples;
2177 FLAC__uint64 mean, k;
2178 const unsigned partitions = 1u << partition_order;
2179 for(partition = residual_sample = 0; partition < partitions; partition++) {
2180 partition_samples = (residual_samples+predictor_order) >> partition_order;
2181 if(partition == 0) {
2182 if(partition_samples <= predictor_order)
2185 partition_samples -= predictor_order;
2187 mean = abs_residual_partition_sums[partition];
2188 #ifdef FLAC__SYMMETRIC_RICE
2189 mean += partition_samples >> 1; /* for rounding effect */
2190 mean /= partition_samples;
2192 /* calc rice_parameter = floor(log2(mean)) */
2200 /* calc rice_parameter ala LOCO-I */
2201 for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
2204 if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
2205 #ifdef DEBUG_VERBOSE
2206 fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
2208 rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
2211 #ifndef NO_RICE_SEARCH
2212 if(rice_parameter_search_dist) {
2213 if(rice_parameter < rice_parameter_search_dist)
2214 min_rice_parameter = 0;
2216 min_rice_parameter = rice_parameter - rice_parameter_search_dist;
2217 max_rice_parameter = rice_parameter + rice_parameter_search_dist;
2218 if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
2219 #ifdef DEBUG_VERBOSE
2220 fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1);
2222 max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1;
2226 min_rice_parameter = max_rice_parameter = rice_parameter;
2228 best_partition_bits = 0xffffffff;
2229 for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
2231 #ifdef VARIABLE_RICE_BITS
2232 #ifdef FLAC__SYMMETRIC_RICE
2233 partition_bits = (2+rice_parameter) * partition_samples;
2235 const unsigned rice_parameter_estimate = rice_parameter-1;
2236 partition_bits = (1+rice_parameter) * partition_samples;
2241 partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
2242 save_residual_sample = residual_sample;
2243 for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) {
2244 #ifdef VARIABLE_RICE_BITS
2245 #ifdef FLAC__SYMMETRIC_RICE
2246 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter);
2248 partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate);
2251 partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */
2254 #ifndef NO_RICE_SEARCH
2255 if(rice_parameter != max_rice_parameter)
2256 residual_sample = save_residual_sample;
2257 if(partition_bits < best_partition_bits) {
2258 best_rice_parameter = rice_parameter;
2259 best_partition_bits = partition_bits;
2263 if(search_for_escapes) {
2264 flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
2265 if(flat_bits <= best_partition_bits) {
2266 raw_bits[partition] = raw_bits_per_partition[partition];
2267 best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
2268 best_partition_bits = flat_bits;
2271 parameters[partition] = best_rice_parameter;
2272 bits_ += best_partition_bits;
2280 unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
2285 for(i = 0; i < samples && !(x&1); i++)
2292 for(shift = 0; !(x&1); shift++)
2297 for(i = 0; i < samples; i++)
2298 signal[i] >>= shift;
2304 void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
2308 for(channel = 0; channel < channels; channel++)
2309 memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
2311 fifo->tail += wide_samples;
2313 FLAC__ASSERT(fifo->tail <= fifo->size);
2316 void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
2319 unsigned sample, wide_sample;
2320 unsigned tail = fifo->tail;
2322 sample = input_offset * channels;
2323 for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
2324 for(channel = 0; channel < channels; channel++)
2325 fifo->data[channel][tail] = input[sample++];
2330 FLAC__ASSERT(fifo->tail <= fifo->size);
2333 FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
2335 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
2336 const unsigned encoded_bytes = encoder->private_->verify.output.bytes;
2339 if(encoder->private_->verify.needs_magic_hack) {
2340 FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
2341 *bytes = FLAC__STREAM_SYNC_LENGTH;
2342 memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
2343 encoder->private_->verify.needs_magic_hack = false;
2346 if(encoded_bytes == 0) {
2347 //@@@@ underflow happened, should we do something else here? is this an assert failure?
2348 return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
2350 else if(encoded_bytes < *bytes)
2351 *bytes = encoded_bytes;
2352 memcpy(buffer, encoder->private_->verify.output.data, *bytes);
2353 encoder->private_->verify.output.data += *bytes;
2354 encoder->private_->verify.output.bytes -= *bytes;
2357 return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
2360 FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
2362 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
2364 const unsigned channels = FLAC__stream_decoder_get_channels(decoder);
2365 const unsigned blocksize = frame->header.blocksize;
2366 const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
2368 for(channel = 0; channel < channels; channel++) {
2369 if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
2370 unsigned i, sample = 0;
2371 FLAC__int32 expect = 0, got = 0;
2373 for(i = 0; i < blocksize; i++) {
2374 if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
2376 expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
2377 got = (FLAC__int32)buffer[channel][i];
2381 FLAC__ASSERT(i < blocksize);
2382 FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
2383 encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
2384 encoder->private_->verify.error_stats.frame_number = frame->header.number.sample_number / blocksize;
2385 encoder->private_->verify.error_stats.channel = channel;
2386 encoder->private_->verify.error_stats.sample = sample;
2387 encoder->private_->verify.error_stats.expected = expect;
2388 encoder->private_->verify.error_stats.got = got;
2389 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
2390 return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
2393 /* dequeue the frame from the fifo */
2394 for(channel = 0; channel < channels; channel++) {
2395 memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail - blocksize);
2397 encoder->private_->verify.input_fifo.tail -= blocksize;
2398 return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
2401 void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
2403 (void)decoder, (void)metadata, (void)client_data;
2406 void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
2408 FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
2409 (void)decoder, (void)status;
2410 encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;