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change force_mid_side to loose_mid_side

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This commit is contained in:
Josh Coalson
2001-01-28 09:27:27 +00:00
parent fce381344c
commit b5e60e5b9f
6 changed files with 184 additions and 98 deletions
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2
include/FLAC/encoder.h
View File

@@ -57,7 +57,7 @@ typedef struct {
FLAC__EncoderState state; /* must be FLAC__ENCODER_UNINITIALIZED when passed to FLAC__encoder_init() */
bool streamable_subset;
bool do_mid_side_stereo; /* 0 or 1; 1 only if channels==2 */
bool force_mid_side_stereo; /* 0 or 1; 1 only if channels==2 and do_mid_side_stereo==true */
bool loose_mid_side_stereo; /* 0 or 1; 1 only if channels==2 and do_mid_side_stereo==true */
unsigned channels; /* must be <= FLAC__MAX_CHANNELS */
unsigned bits_per_sample; /* do not give the encoder wider data than what you specify here or bad things will happen! */
unsigned sample_rate;

16
src/flac/encode.c
View File

@@ -81,7 +81,7 @@ static int32 *input[FLAC__MAX_CHANNELS];
/* local routines */
static bool init(encoder_wrapper_struct *encoder_wrapper);
static bool init_encoder(bool lax, bool do_mid_side, bool force_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, unsigned channels, unsigned bps, unsigned sample_rate, encoder_wrapper_struct *encoder_wrapper);
static bool init_encoder(bool lax, bool do_mid_side, bool loose_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, unsigned channels, unsigned bps, unsigned sample_rate, encoder_wrapper_struct *encoder_wrapper);
static void format_input(unsigned wide_samples, bool is_big_endian, bool is_unsigned_samples, unsigned channels, unsigned bps, encoder_wrapper_struct *encoder_wrapper);
static FLAC__EncoderWriteStatus write_callback(const FLAC__Encoder *encoder, const byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
static void metadata_callback(const FLAC__Encoder *encoder, const FLAC__StreamMetaData *metadata, void *client_data);
@@ -93,7 +93,7 @@ static void print_stats(const encoder_wrapper_struct *encoder_wrapper);
static bool read_little_endian_uint16(FILE *f, uint16 *val, bool eof_ok);
static bool read_little_endian_uint32(FILE *f, uint32 *val, bool eof_ok);
int encode_wav(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool force_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision)
int encode_wav(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool loose_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision)
{
encoder_wrapper_struct encoder_wrapper;
FILE *fin;
@@ -245,7 +245,7 @@ int encode_wav(const char *infile, const char *outfile, bool verbose, uint64 ski
encoder_wrapper.total_samples_to_encode = data_bytes / bytes_per_wide_sample - skip;
encoder_wrapper.unencoded_size = encoder_wrapper.total_samples_to_encode * bytes_per_wide_sample + 44; /* 44 for the size of the WAV headers */
if(!init_encoder(lax, do_mid_side, force_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, blocksize, qlp_coeff_precision, channels, bps, sample_rate, &encoder_wrapper))
if(!init_encoder(lax, do_mid_side, loose_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, blocksize, qlp_coeff_precision, channels, bps, sample_rate, &encoder_wrapper))
goto wav_abort_;
encoder_wrapper.verify_fifo.into_frames = true;
@@ -322,7 +322,7 @@ wav_abort_:
return 1;
}
int encode_raw(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool force_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, bool is_big_endian, bool is_unsigned_samples, unsigned channels, unsigned bps, unsigned sample_rate)
int encode_raw(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool loose_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, bool is_big_endian, bool is_unsigned_samples, unsigned channels, unsigned bps, unsigned sample_rate)
{
encoder_wrapper_struct encoder_wrapper;
FILE *fin;
@@ -395,7 +395,7 @@ int encode_raw(const char *infile, const char *outfile, bool verbose, uint64 ski
}
}
if(!init_encoder(lax, do_mid_side, force_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, blocksize, qlp_coeff_precision, channels, bps, sample_rate, &encoder_wrapper))
if(!init_encoder(lax, do_mid_side, loose_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, blocksize, qlp_coeff_precision, channels, bps, sample_rate, &encoder_wrapper))
goto raw_abort_;
encoder_wrapper.verify_fifo.into_frames = true;
@@ -483,10 +483,10 @@ bool init(encoder_wrapper_struct *encoder_wrapper)
return true;
}
bool init_encoder(bool lax, bool do_mid_side, bool force_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, unsigned channels, unsigned bps, unsigned sample_rate, encoder_wrapper_struct *encoder_wrapper)
bool init_encoder(bool lax, bool do_mid_side, bool loose_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, unsigned channels, unsigned bps, unsigned sample_rate, encoder_wrapper_struct *encoder_wrapper)
{
if(channels != 2 || bps > 16)
do_mid_side = force_mid_side = false;
do_mid_side = loose_mid_side = false;
if(encoder_wrapper->verify) {
unsigned i;
@@ -523,7 +523,7 @@ bool init_encoder(bool lax, bool do_mid_side, bool force_mid_side, bool do_exhau
encoder_wrapper->encoder->qlp_coeff_precision = qlp_coeff_precision;
encoder_wrapper->encoder->max_lpc_order = max_lpc_order;
encoder_wrapper->encoder->do_mid_side_stereo = do_mid_side;
encoder_wrapper->encoder->force_mid_side_stereo = force_mid_side;
encoder_wrapper->encoder->loose_mid_side_stereo = loose_mid_side;
encoder_wrapper->encoder->do_exhaustive_model_search = do_exhaustive_model_search;
encoder_wrapper->encoder->do_qlp_coeff_prec_search = do_qlp_coeff_prec_search;
encoder_wrapper->encoder->rice_optimization_level = rice_optimization_level;

4
src/flac/encode.h
View File

@@ -21,7 +21,7 @@
#include "FLAC/ordinals.h"
int encode_wav(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool force_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision);
int encode_raw(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool force_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, bool is_big_endian, bool is_unsigned_samples, unsigned channels, unsigned bps, unsigned sample_rate);
int encode_wav(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool loose_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision);
int encode_raw(const char *infile, const char *outfile, bool verbose, uint64 skip, bool verify, bool lax, bool do_mid_side, bool loose_mid_side, bool do_exhaustive_model_search, bool do_qlp_coeff_prec_search, unsigned rice_optimization_level, unsigned max_lpc_order, unsigned blocksize, unsigned qlp_coeff_precision, bool is_big_endian, bool is_unsigned_samples, unsigned channels, unsigned bps, unsigned sample_rate);
#endif

30
src/flac/main.c
View File

@@ -32,7 +32,7 @@ int main(int argc, char *argv[])
{
int i;
bool verify = false, verbose = true, lax = false, mode_decode = false, test_only = false, analyze = false;
bool do_mid_side = true, force_mid_side = false, do_exhaustive_model_search = false, do_qlp_coeff_prec_search = false;
bool do_mid_side = true, loose_mid_side = false, do_exhaustive_model_search = false, do_qlp_coeff_prec_search = false;
unsigned max_lpc_order = 8;
unsigned qlp_coeff_precision = 0;
uint64 skip = 0;
@@ -80,9 +80,9 @@ int main(int argc, char *argv[])
else if(0 == strcmp(argv[i], "-m-"))
do_mid_side = false;
else if(0 == strcmp(argv[i], "-M"))
force_mid_side = do_mid_side = true;
loose_mid_side = do_mid_side = true;
else if(0 == strcmp(argv[i], "-M-"))
force_mid_side = do_mid_side = false;
loose_mid_side = do_mid_side = false;
else if(0 == strcmp(argv[i], "-p"))
do_qlp_coeff_prec_search = true;
else if(0 == strcmp(argv[i], "-p-"))
@@ -114,7 +114,7 @@ int main(int argc, char *argv[])
else if(0 == strcmp(argv[i], "-0")) {
do_exhaustive_model_search = false;
do_mid_side = false;
force_mid_side = false;
loose_mid_side = false;
qlp_coeff_precision = 0;
rice_optimization_level = 0;
max_lpc_order = 0;
@@ -122,7 +122,7 @@ int main(int argc, char *argv[])
else if(0 == strcmp(argv[i], "-1")) {
do_exhaustive_model_search = false;
do_mid_side = true;
force_mid_side = true;
loose_mid_side = true;
qlp_coeff_precision = 0;
rice_optimization_level = 0;
max_lpc_order = 0;
@@ -130,14 +130,14 @@ int main(int argc, char *argv[])
else if(0 == strcmp(argv[i], "-2")) {
do_exhaustive_model_search = false;
do_mid_side = true;
force_mid_side = false;
loose_mid_side = false;
qlp_coeff_precision = 0;
max_lpc_order = 0;
}
else if(0 == strcmp(argv[i], "-4")) {
do_exhaustive_model_search = false;
do_mid_side = false;
force_mid_side = false;
loose_mid_side = false;
qlp_coeff_precision = 0;
rice_optimization_level = 0;
max_lpc_order = 8;
@@ -145,7 +145,7 @@ int main(int argc, char *argv[])
else if(0 == strcmp(argv[i], "-5")) {
do_exhaustive_model_search = false;
do_mid_side = true;
force_mid_side = true;
loose_mid_side = true;
qlp_coeff_precision = 0;
rice_optimization_level = 0;
max_lpc_order = 8;
@@ -153,21 +153,21 @@ int main(int argc, char *argv[])
else if(0 == strcmp(argv[i], "-6")) {
do_exhaustive_model_search = false;
do_mid_side = true;
force_mid_side = false;
loose_mid_side = false;
qlp_coeff_precision = 0;
max_lpc_order = 8;
}
else if(0 == strcmp(argv[i], "-8")) {
do_exhaustive_model_search = false;
do_mid_side = true;
force_mid_side = false;
loose_mid_side = false;
qlp_coeff_precision = 0;
max_lpc_order = 32;
}
else if(0 == strcmp(argv[i], "-9")) {
do_exhaustive_model_search = true;
do_mid_side = true;
force_mid_side = false;
loose_mid_side = false;
do_qlp_coeff_prec_search = true;
rice_optimization_level = 99;
max_lpc_order = 32;
@@ -263,7 +263,7 @@ int main(int argc, char *argv[])
if(!mode_decode) {
printf("options:%s -b %u%s -l %u%s%s -q %u -r %u%s\n",
lax?" --lax":"", (unsigned)blocksize, force_mid_side?" -M":do_mid_side?" -m":"", max_lpc_order,
lax?" --lax":"", (unsigned)blocksize, loose_mid_side?" -M":do_mid_side?" -m":"", max_lpc_order,
do_exhaustive_model_search?" -e":"", do_qlp_coeff_prec_search?" -p":"",
qlp_coeff_precision, (unsigned)rice_optimization_level,
verify? " -V":""
@@ -278,9 +278,9 @@ int main(int argc, char *argv[])
return decode_raw(argv[i], test_only? 0 : argv[i+1], analyze, verbose, skip, format_is_big_endian, format_is_unsigned_samples);
else
if(format_is_wave)
return encode_wav(argv[i], argv[i+1], verbose, skip, verify, lax, do_mid_side, force_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, (unsigned)blocksize, qlp_coeff_precision);
return encode_wav(argv[i], argv[i+1], verbose, skip, verify, lax, do_mid_side, loose_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, (unsigned)blocksize, qlp_coeff_precision);
else
return encode_raw(argv[i], argv[i+1], verbose, skip, verify, lax, do_mid_side, force_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, (unsigned)blocksize, qlp_coeff_precision, format_is_big_endian, format_is_unsigned_samples, format_channels, format_bps, format_sample_rate);
return encode_raw(argv[i], argv[i+1], verbose, skip, verify, lax, do_mid_side, loose_mid_side, do_exhaustive_model_search, do_qlp_coeff_prec_search, rice_optimization_level, max_lpc_order, (unsigned)blocksize, qlp_coeff_precision, format_is_big_endian, format_is_unsigned_samples, format_channels, format_bps, format_sample_rate);
return 0;
}
@@ -340,7 +340,7 @@ int usage(const char *message, ...)
printf(" --lax : allow encoder to generate non-Subset files\n");
printf(" -b blocksize : default is 1152 for -l 0, else 4608; should be 192/576/1152/2304/4608 (unless --lax is used)\n");
printf(" -m : try mid-side coding for each frame (stereo input only)\n");
printf(" -M : force mid-side coding for all frames (stereo input only)\n");
printf(" -M : loose mid-side coding for all frames (stereo input only)\n");
printf(" -0 .. -9 : fastest compression .. highest compression, default is -6\n");
printf(" these are synonyms for other options:\n");
printf(" -0 : synonymous with -l 0\n");

136
src/libFLAC/encoder.c
View File

@@ -57,6 +57,10 @@ typedef struct FLAC__EncoderPrivate {
uint32 *abs_residual; /* workspace where the abs(candidate residual) is stored */
FLAC__BitBuffer frame; /* the current frame being worked on */
bool current_frame_can_do_mid_side; /* encoder sets this false when any given sample of a frame's side channel exceeds 16 bits */
double loose_mid_side_stereo_frames_exact; /* exact number of frames the encoder will use before trying both independent and mid/side frames again */
unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
FLAC__ChannelAssignment last_channel_assignment;
FLAC__StreamMetaData metadata;
unsigned current_sample_number;
unsigned current_frame_number;
@@ -69,8 +73,8 @@ typedef struct FLAC__EncoderPrivate {
static bool encoder_resize_buffers_(FLAC__Encoder *encoder, unsigned new_size);
static bool encoder_process_frame_(FLAC__Encoder *encoder, bool is_last_frame);
static bool encoder_process_subframes_(FLAC__Encoder *encoder, bool is_last_frame);
static bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_order, bool verbatim_only, const FLAC__FrameHeader *frame_header, const int32 integer_signal[], const real real_signal[], FLAC__Subframe *subframe[2], int32 *residual[2], unsigned *best_subframe, unsigned *best_bits);
static bool encoder_add_subframe_(FLAC__Encoder *encoder, const FLAC__FrameHeader *frame_header, const FLAC__Subframe *subframe, FLAC__BitBuffer *frame);
static bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_order, bool verbatim_only, const FLAC__FrameHeader *frame_header, unsigned bits_per_sample, const int32 integer_signal[], const real real_signal[], FLAC__Subframe *subframe[2], int32 *residual[2], unsigned *best_subframe, unsigned *best_bits);
static bool encoder_add_subframe_(FLAC__Encoder *encoder, const FLAC__FrameHeader *frame_header, unsigned bits_per_sample, const FLAC__Subframe *subframe, FLAC__BitBuffer *frame);
static unsigned encoder_evaluate_constant_subframe_(const int32 signal, unsigned bits_per_sample, FLAC__Subframe *subframe);
static unsigned encoder_evaluate_fixed_subframe_(const int32 signal[], int32 residual[], uint32 abs_residual[], unsigned blocksize, unsigned bits_per_sample, unsigned order, unsigned rice_parameter, unsigned max_partition_order, FLAC__Subframe *subframe);
static unsigned encoder_evaluate_lpc_subframe_(const int32 signal[], int32 residual[], uint32 abs_residual[], const real lp_coeff[], unsigned blocksize, unsigned bits_per_sample, unsigned order, unsigned qlp_coeff_precision, unsigned rice_parameter, unsigned max_partition_order, FLAC__Subframe *subframe);
@@ -261,7 +265,7 @@ FLAC__EncoderState FLAC__encoder_init(FLAC__Encoder *encoder, FLAC__EncoderWrite
if(encoder->do_mid_side_stereo && encoder->bits_per_sample > 16)
return encoder->state = FLAC__ENCODER_MID_SIDE_SAMPLE_SIZE_MISMATCH;
if(encoder->force_mid_side_stereo && !encoder->do_mid_side_stereo)
if(encoder->loose_mid_side_stereo && !encoder->do_mid_side_stereo)
return encoder->state = FLAC__ENCODER_ILLEGAL_MID_SIDE_FORCE;
if(encoder->bits_per_sample == 0 || encoder->bits_per_sample > FLAC__MAX_BITS_PER_SAMPLE)
@@ -346,6 +350,11 @@ FLAC__EncoderState FLAC__encoder_init(FLAC__Encoder *encoder, FLAC__EncoderWrite
}
encoder->guts->abs_residual = 0;
encoder->guts->current_frame_can_do_mid_side = true;
encoder->guts->loose_mid_side_stereo_frames_exact = (double)encoder->sample_rate * 0.4 / (double)encoder->blocksize;
encoder->guts->loose_mid_side_stereo_frames = (unsigned)(encoder->guts->loose_mid_side_stereo_frames_exact + 0.5);
if(encoder->guts->loose_mid_side_stereo_frames == 0)
encoder->guts->loose_mid_side_stereo_frames = 1;
encoder->guts->loose_mid_side_stereo_frame_count = 0;
encoder->guts->current_sample_number = 0;
encoder->guts->current_frame_number = 0;
@@ -482,7 +491,7 @@ bool FLAC__encoder_process(FLAC__Encoder *encoder, const int32 *buf[], unsigned
encoder->guts->current_frame_can_do_mid_side = false;
}
else {
mid = (buf[0][j] + buf[1][j]) >> 1; /* NOTE: not the same as divide-by-two ! */
mid = (buf[0][j] + buf[1][j]) >> 1; /* NOTE: not the same as 'mid = (buf[0][j] + buf[1][j]) / 2' ! */
encoder->guts->integer_signal_mid_side[0][i] = mid;
encoder->guts->integer_signal_mid_side[1][i] = side;
encoder->guts->real_signal_mid_side[0][i] = (real)mid;
@@ -529,7 +538,7 @@ bool FLAC__encoder_process_interleaved(FLAC__Encoder *encoder, const int32 buf[]
encoder->guts->current_frame_can_do_mid_side = false;
}
else {
mid = (left + x) >> 1; /* NOTE: not the same as divide-by-two ! */
mid = (left + x) >> 1; /* NOTE: not the same as 'mid = (left + x) / 2' ! */
encoder->guts->integer_signal_mid_side[0][i] = mid;
encoder->guts->integer_signal_mid_side[1][i] = side;
encoder->guts->real_signal_mid_side[0][i] = (real)mid;
@@ -604,6 +613,7 @@ bool encoder_process_subframes_(FLAC__Encoder *encoder, bool is_last_frame)
{
FLAC__FrameHeader frame_header;
unsigned channel, max_partition_order;
bool do_independent, do_mid_side;
/*
* Calculate the max Rice partition order
@@ -634,22 +644,54 @@ bool encoder_process_subframes_(FLAC__Encoder *encoder, bool is_last_frame)
frame_header.bits_per_sample = encoder->bits_per_sample;
frame_header.number.frame_number = encoder->guts->current_frame_number;
/*
* Figure out what channel assignments to try
*/
if(encoder->do_mid_side_stereo) {
if(encoder->loose_mid_side_stereo) {
if(encoder->guts->loose_mid_side_stereo_frame_count == 0) {
do_independent = true;
do_mid_side = true;
}
else {
do_independent = (encoder->guts->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
do_mid_side = !do_independent;
}
}
else {
do_independent = true;
do_mid_side = true;
}
}
else {
do_independent = true;
do_mid_side = false;
}
if(do_mid_side && !encoder->guts->current_frame_can_do_mid_side) {
do_independent = true;
do_mid_side = false;
}
assert(do_independent || do_mid_side);
/*
* First do a normal encoding pass of each independent channel
*/
if(do_independent) {
for(channel = 0; channel < encoder->channels; channel++) {
if(!encoder_process_subframe_(encoder, max_partition_order, encoder->force_mid_side_stereo, &frame_header, encoder->guts->integer_signal[channel], encoder->guts->real_signal[channel], encoder->guts->subframe_workspace_ptr[channel], encoder->guts->residual_workspace[channel], encoder->guts->best_subframe+channel, encoder->guts->best_subframe_bits+channel))
if(!encoder_process_subframe_(encoder, max_partition_order, false, &frame_header, encoder->bits_per_sample, encoder->guts->integer_signal[channel], encoder->guts->real_signal[channel], encoder->guts->subframe_workspace_ptr[channel], encoder->guts->residual_workspace[channel], encoder->guts->best_subframe+channel, encoder->guts->best_subframe_bits+channel))
return false;
}
}
/*
* Now do mid and side channels if requested
*/
if(encoder->do_mid_side_stereo && encoder->guts->current_frame_can_do_mid_side) {
if(do_mid_side) {
assert(encoder->channels == 2);
for(channel = 0; channel < 2; channel++) {
if(!encoder_process_subframe_(encoder, max_partition_order, false, &frame_header, encoder->guts->integer_signal_mid_side[channel], encoder->guts->real_signal_mid_side[channel], encoder->guts->subframe_workspace_ptr_mid_side[channel], encoder->guts->residual_workspace_mid_side[channel], encoder->guts->best_subframe_mid_side+channel, encoder->guts->best_subframe_bits_mid_side+channel))
if(!encoder_process_subframe_(encoder, max_partition_order, false, &frame_header, encoder->bits_per_sample+(channel==0? 0:1), encoder->guts->integer_signal_mid_side[channel], encoder->guts->real_signal_mid_side[channel], encoder->guts->subframe_workspace_ptr_mid_side[channel], encoder->guts->residual_workspace_mid_side[channel], encoder->guts->best_subframe_mid_side+channel, encoder->guts->best_subframe_bits_mid_side+channel))
return false;
}
}
@@ -657,11 +699,20 @@ bool encoder_process_subframes_(FLAC__Encoder *encoder, bool is_last_frame)
/*
* Compose the frame bitbuffer
*/
if(encoder->do_mid_side_stereo && encoder->guts->current_frame_can_do_mid_side) {
if(do_mid_side) {
FLAC__ChannelAssignment channel_assignment;
assert(encoder->channels == 2);
if(encoder->loose_mid_side_stereo && encoder->guts->loose_mid_side_stereo_frame_count > 0) {
channel_assignment = (encoder->guts->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
}
else {
unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
unsigned min_bits;
FLAC__ChannelAssignment ca, min_assignment;
assert(encoder->channels == 2);
FLAC__ChannelAssignment ca;
assert(do_independent && do_mid_side);
/* We have to figure out which channel assignent results in the smallest frame */
bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->guts->best_subframe_bits [0] + encoder->guts->best_subframe_bits [1];
@@ -669,44 +720,45 @@ bool encoder_process_subframes_(FLAC__Encoder *encoder, bool is_last_frame)
bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->guts->best_subframe_bits [1] + encoder->guts->best_subframe_bits_mid_side[1];
bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->guts->best_subframe_bits_mid_side[0] + encoder->guts->best_subframe_bits_mid_side[1];
for(min_assignment = 0, min_bits = bits[0], ca = 1; ca <= 3; ca++) {
for(channel_assignment = 0, min_bits = bits[0], ca = 1; ca <= 3; ca++) {
if(bits[ca] < min_bits) {
min_bits = bits[ca];
min_assignment = ca;
channel_assignment = ca;
}
}
}
frame_header.channel_assignment = min_assignment;
frame_header.channel_assignment = channel_assignment;
if(!FLAC__frame_add_header(&frame_header, encoder->streamable_subset, is_last_frame, &encoder->guts->frame)) {
encoder->state = FLAC__ENCODER_FRAMING_ERROR;
return false;
}
switch(min_assignment) {
switch(channel_assignment) {
/* note that encoder_add_subframe_ sets the state for us in case of an error */
case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace [0][encoder->guts->best_subframe [0]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample , &encoder->guts->subframe_workspace [0][encoder->guts->best_subframe [0]], &encoder->guts->frame))
return false;
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace [1][encoder->guts->best_subframe [1]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample , &encoder->guts->subframe_workspace [1][encoder->guts->best_subframe [1]], &encoder->guts->frame))
return false;
break;
case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace [0][encoder->guts->best_subframe [0]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample , &encoder->guts->subframe_workspace [0][encoder->guts->best_subframe [0]], &encoder->guts->frame))
return false;
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace_mid_side[1][encoder->guts->best_subframe_mid_side[1]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample+1, &encoder->guts->subframe_workspace_mid_side[1][encoder->guts->best_subframe_mid_side[1]], &encoder->guts->frame))
return false;
break;
case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace_mid_side[1][encoder->guts->best_subframe_mid_side[1]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample+1, &encoder->guts->subframe_workspace_mid_side[1][encoder->guts->best_subframe_mid_side[1]], &encoder->guts->frame))
return false;
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace [1][encoder->guts->best_subframe [1]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample , &encoder->guts->subframe_workspace [1][encoder->guts->best_subframe [1]], &encoder->guts->frame))
return false;
break;
case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace_mid_side[0][encoder->guts->best_subframe_mid_side[0]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample , &encoder->guts->subframe_workspace_mid_side[0][encoder->guts->best_subframe_mid_side[0]], &encoder->guts->frame))
return false;
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace_mid_side[1][encoder->guts->best_subframe_mid_side[1]], &encoder->guts->frame))
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample+1, &encoder->guts->subframe_workspace_mid_side[1][encoder->guts->best_subframe_mid_side[1]], &encoder->guts->frame))
return false;
break;
default:
@@ -720,17 +772,25 @@ bool encoder_process_subframes_(FLAC__Encoder *encoder, bool is_last_frame)
}
for(channel = 0; channel < encoder->channels; channel++) {
if(!encoder_add_subframe_(encoder, &frame_header, &encoder->guts->subframe_workspace[channel][encoder->guts->best_subframe[channel]], &encoder->guts->frame)) {
if(!encoder_add_subframe_(encoder, &frame_header, encoder->bits_per_sample, &encoder->guts->subframe_workspace[channel][encoder->guts->best_subframe[channel]], &encoder->guts->frame)) {
/* the above function sets the state for us in case of an error */
return false;
}
}
}
if(encoder->loose_mid_side_stereo) {
encoder->guts->loose_mid_side_stereo_frame_count++;
if(encoder->guts->loose_mid_side_stereo_frame_count >= encoder->guts->loose_mid_side_stereo_frames)
encoder->guts->loose_mid_side_stereo_frame_count = 0;
}
encoder->guts->last_channel_assignment = frame_header.channel_assignment;
return true;
}
bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_order, bool verbatim_only, const FLAC__FrameHeader *frame_header, const int32 integer_signal[], const real real_signal[], FLAC__Subframe *subframe[2], int32 *residual[2], unsigned *best_subframe, unsigned *best_bits)
bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_order, bool verbatim_only, const FLAC__FrameHeader *frame_header, unsigned bits_per_sample, const int32 integer_signal[], const real real_signal[], FLAC__Subframe *subframe[2], int32 *residual[2], unsigned *best_subframe, unsigned *best_bits)
{
real fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
real lpc_residual_bits_per_sample;
@@ -746,7 +806,7 @@ bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_or
/* verbatim subframe is the baseline against which we measure other compressed subframes */
_best_subframe = 0;
_best_bits = encoder_evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, frame_header->bits_per_sample, subframe[_best_subframe]);
_best_bits = encoder_evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, bits_per_sample, subframe[_best_subframe]);
if(!verbatim_only && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
/* check for constant subframe */
@@ -761,7 +821,7 @@ bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_or
}
}
if(signal_is_constant) {
_candidate_bits = encoder_evaluate_constant_subframe_(integer_signal[0], frame_header->bits_per_sample, subframe[!_best_subframe]);
_candidate_bits = encoder_evaluate_constant_subframe_(integer_signal[0], bits_per_sample, subframe[!_best_subframe]);
if(_candidate_bits < _best_bits) {
_best_subframe = !_best_subframe;
_best_bits = _candidate_bits;
@@ -778,13 +838,13 @@ bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_or
min_fixed_order = max_fixed_order = guess_fixed_order;
}
for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
if(fixed_residual_bits_per_sample[fixed_order] >= (real)frame_header->bits_per_sample)
if(fixed_residual_bits_per_sample[fixed_order] >= (real)bits_per_sample)
continue; /* don't even try */
/* 0.5 is for rounding, another 1.0 is to account for the signed->unsigned conversion during rice coding */
rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > 0.0)? (unsigned)(fixed_residual_bits_per_sample[fixed_order]+1.5) : 0;
if(rice_parameter >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN))
rice_parameter = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN) - 1;
_candidate_bits = encoder_evaluate_fixed_subframe_(integer_signal, residual[!_best_subframe], encoder->guts->abs_residual, frame_header->blocksize, frame_header->bits_per_sample, fixed_order, rice_parameter, max_partition_order, subframe[!_best_subframe]);
_candidate_bits = encoder_evaluate_fixed_subframe_(integer_signal, residual[!_best_subframe], encoder->guts->abs_residual, frame_header->blocksize, bits_per_sample, fixed_order, rice_parameter, max_partition_order, subframe[!_best_subframe]);
if(_candidate_bits < _best_bits) {
_best_subframe = !_best_subframe;
_best_bits = _candidate_bits;
@@ -804,26 +864,26 @@ bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_or
min_lpc_order = 1;
}
else {
unsigned guess_lpc_order = FLAC__lpc_compute_best_order(lpc_error, max_lpc_order, frame_header->blocksize, frame_header->bits_per_sample);
unsigned guess_lpc_order = FLAC__lpc_compute_best_order(lpc_error, max_lpc_order, frame_header->blocksize, bits_per_sample);
min_lpc_order = max_lpc_order = guess_lpc_order;
}
if(encoder->do_qlp_coeff_prec_search) {
min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
max_qlp_coeff_precision = 32 - frame_header->bits_per_sample - 1;
max_qlp_coeff_precision = 32 - bits_per_sample - 1;
}
else {
min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->qlp_coeff_precision;
}
for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize);
if(lpc_residual_bits_per_sample >= (real)frame_header->bits_per_sample)
if(lpc_residual_bits_per_sample >= (real)bits_per_sample)
continue; /* don't even try */
/* 0.5 is for rounding, another 1.0 is to account for the signed->unsigned conversion during rice coding */
rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+1.5) : 0;
if(rice_parameter >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN))
rice_parameter = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN) - 1;
for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
_candidate_bits = encoder_evaluate_lpc_subframe_(integer_signal, residual[!_best_subframe], encoder->guts->abs_residual, lp_coeff[lpc_order-1], frame_header->blocksize, frame_header->bits_per_sample, lpc_order, qlp_coeff_precision, rice_parameter, max_partition_order, subframe[!_best_subframe]);
_candidate_bits = encoder_evaluate_lpc_subframe_(integer_signal, residual[!_best_subframe], encoder->guts->abs_residual, lp_coeff[lpc_order-1], frame_header->blocksize, bits_per_sample, lpc_order, qlp_coeff_precision, rice_parameter, max_partition_order, subframe[!_best_subframe]);
if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
if(_candidate_bits < _best_bits) {
_best_subframe = !_best_subframe;
@@ -843,29 +903,29 @@ bool encoder_process_subframe_(FLAC__Encoder *encoder, unsigned max_partition_or
return true;
}
bool encoder_add_subframe_(FLAC__Encoder *encoder, const FLAC__FrameHeader *frame_header, const FLAC__Subframe *subframe, FLAC__BitBuffer *frame)
bool encoder_add_subframe_(FLAC__Encoder *encoder, const FLAC__FrameHeader *frame_header, unsigned bits_per_sample, const FLAC__Subframe *subframe, FLAC__BitBuffer *frame)
{
switch(subframe->type) {
case FLAC__SUBFRAME_TYPE_CONSTANT:
if(!FLAC__subframe_add_constant(&(subframe->data.constant), frame_header->bits_per_sample, frame)) {
if(!FLAC__subframe_add_constant(&(subframe->data.constant), bits_per_sample, frame)) {
encoder->state = FLAC__ENCODER_FATAL_ERROR_WHILE_ENCODING;
return false;
}
break;
case FLAC__SUBFRAME_TYPE_FIXED:
if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), frame_header->blocksize - subframe->data.fixed.order, frame_header->bits_per_sample, frame)) {
if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), frame_header->blocksize - subframe->data.fixed.order, bits_per_sample, frame)) {
encoder->state = FLAC__ENCODER_FATAL_ERROR_WHILE_ENCODING;
return false;
}
break;
case FLAC__SUBFRAME_TYPE_LPC:
if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), frame_header->blocksize - subframe->data.lpc.order, frame_header->bits_per_sample, frame)) {
if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), frame_header->blocksize - subframe->data.lpc.order, bits_per_sample, frame)) {
encoder->state = FLAC__ENCODER_FATAL_ERROR_WHILE_ENCODING;
return false;
}
break;
case FLAC__SUBFRAME_TYPE_VERBATIM:
if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), frame_header->blocksize, frame_header->bits_per_sample, frame)) {
if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), frame_header->blocksize, bits_per_sample, frame)) {
encoder->state = FLAC__ENCODER_FATAL_ERROR_WHILE_ENCODING;
return false;
}

74
src/libFLAC/stream_decoder.c
View File

@@ -52,11 +52,11 @@ static bool stream_decoder_skip_id3v2_tag_(FLAC__StreamDecoder *decoder);
static bool stream_decoder_frame_sync_(FLAC__StreamDecoder *decoder);
static bool stream_decoder_read_frame_(FLAC__StreamDecoder *decoder, bool *got_a_frame);
static bool stream_decoder_read_frame_header_(FLAC__StreamDecoder *decoder);
static bool stream_decoder_read_subframe_(FLAC__StreamDecoder *decoder, unsigned channel);
static bool stream_decoder_read_subframe_constant_(FLAC__StreamDecoder *decoder, unsigned channel);
static bool stream_decoder_read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned channel, const unsigned order);
static bool stream_decoder_read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned channel, const unsigned order);
static bool stream_decoder_read_subframe_verbatim_(FLAC__StreamDecoder *decoder, unsigned channel);
static bool stream_decoder_read_subframe_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps);
static bool stream_decoder_read_subframe_constant_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps);
static bool stream_decoder_read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order);
static bool stream_decoder_read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order);
static bool stream_decoder_read_subframe_verbatim_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps);
static bool stream_decoder_read_residual_partitioned_rice_(FLAC__StreamDecoder *decoder, unsigned predictor_order, unsigned partition_order, int32 *residual);
static bool stream_decoder_read_zero_padding_(FLAC__StreamDecoder *decoder);
static bool read_callback_(byte buffer[], unsigned *bytes, void *client_data);
@@ -602,7 +602,33 @@ bool stream_decoder_read_frame_(FLAC__StreamDecoder *decoder, bool *got_a_frame)
if(!stream_decoder_allocate_output_(decoder, decoder->guts->frame.header.blocksize))
return false;
for(channel = 0; channel < decoder->guts->frame.header.channels; channel++) {
if(!stream_decoder_read_subframe_(decoder, channel))
/*
* first figure the correct bits-per-sample of the subframe
*/
unsigned bps = decoder->guts->frame.header.bits_per_sample;
switch(decoder->guts->frame.header.channel_assignment) {
case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
/* no adjustment needed */
break;
case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
if(channel == 1)
bps++;
break;
case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
if(channel == 0)
bps++;
break;
case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
if(channel == 1)
bps++;
break;
default:
assert(0);
}
/*
* now read it
*/
if(!stream_decoder_read_subframe_(decoder, channel, bps))
return false;
if(decoder->state != FLAC__STREAM_DECODER_READ_FRAME) {
decoder->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
@@ -953,7 +979,7 @@ bool stream_decoder_read_frame_header_(FLAC__StreamDecoder *decoder)
return true;
}
bool stream_decoder_read_subframe_(FLAC__StreamDecoder *decoder, unsigned channel)
bool stream_decoder_read_subframe_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps)
{
uint32 x;
@@ -965,28 +991,28 @@ bool stream_decoder_read_subframe_(FLAC__StreamDecoder *decoder, unsigned channe
return true;
}
else if(x == 0) {
return stream_decoder_read_subframe_constant_(decoder, channel);
return stream_decoder_read_subframe_constant_(decoder, channel, bps);
}
else if(x == 2) {
return stream_decoder_read_subframe_verbatim_(decoder, channel);
return stream_decoder_read_subframe_verbatim_(decoder, channel, bps);
}
else if(x < 16) {
decoder->state = FLAC__STREAM_DECODER_UNPARSEABLE_STREAM;
return false;
}
else if(x <= 24) {
return stream_decoder_read_subframe_fixed_(decoder, channel, (x>>1)&7);
return stream_decoder_read_subframe_fixed_(decoder, channel, bps, (x>>1)&7);
}
else if(x < 64) {
decoder->state = FLAC__STREAM_DECODER_UNPARSEABLE_STREAM;
return false;
}
else {
return stream_decoder_read_subframe_lpc_(decoder, channel, ((x>>1)&31)+1);
return stream_decoder_read_subframe_lpc_(decoder, channel, bps, ((x>>1)&31)+1);
}
}
bool stream_decoder_read_subframe_constant_(FLAC__StreamDecoder *decoder, unsigned channel)
bool stream_decoder_read_subframe_constant_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps)
{
FLAC__Subframe_Constant *subframe = &decoder->guts->frame.subframes[channel].data.constant;
int32 x;
@@ -995,7 +1021,7 @@ bool stream_decoder_read_subframe_constant_(FLAC__StreamDecoder *decoder, unsign
decoder->guts->frame.subframes[channel].type = FLAC__SUBFRAME_TYPE_CONSTANT;
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &x, decoder->guts->frame.header.bits_per_sample, read_callback_, decoder))
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &x, bps, read_callback_, decoder))
return false; /* the read_callback_ sets the state for us */
subframe->value = x;
@@ -1007,7 +1033,7 @@ bool stream_decoder_read_subframe_constant_(FLAC__StreamDecoder *decoder, unsign
return true;
}
bool stream_decoder_read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned channel, const unsigned order)
bool stream_decoder_read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order)
{
FLAC__Subframe_Fixed *subframe = &decoder->guts->frame.subframes[channel].data.fixed;
int32 i32;
@@ -1021,7 +1047,7 @@ bool stream_decoder_read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned
/* read warm-up samples */
for(u = 0; u < order; u++) {
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &i32, decoder->guts->frame.header.bits_per_sample, read_callback_, decoder))
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &i32, bps, read_callback_, decoder))
return false; /* the read_callback_ sets the state for us */
subframe->warmup[u] = i32;
}
@@ -1044,7 +1070,7 @@ bool stream_decoder_read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned
/* read residual */
switch(subframe->entropy_coding_method.type) {
case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
if(!stream_decoder_read_residual_partitioned_rice_(decoder, order, subframe->entropy_coding_method.data.partitioned_rice.order, subframe->residual))
if(!stream_decoder_read_residual_partitioned_rice_(decoder, order, subframe->entropy_coding_method.data.partitioned_rice.order, decoder->guts->residual[channel]))
return false;
break;
default:
@@ -1058,7 +1084,7 @@ bool stream_decoder_read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned
return true;
}
bool stream_decoder_read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned channel, const unsigned order)
bool stream_decoder_read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order)
{
FLAC__Subframe_LPC *subframe = &decoder->guts->frame.subframes[channel].data.lpc;
int32 i32;
@@ -1072,7 +1098,7 @@ bool stream_decoder_read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned ch
/* read warm-up samples */
for(u = 0; u < order; u++) {
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &i32, decoder->guts->frame.header.bits_per_sample, read_callback_, decoder))
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &i32, bps, read_callback_, decoder))
return false; /* the read_callback_ sets the state for us */
subframe->warmup[u] = i32;
}
@@ -1117,7 +1143,7 @@ bool stream_decoder_read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned ch
/* read residual */
switch(subframe->entropy_coding_method.type) {
case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
if(!stream_decoder_read_residual_partitioned_rice_(decoder, order, subframe->entropy_coding_method.data.partitioned_rice.order, subframe->residual))
if(!stream_decoder_read_residual_partitioned_rice_(decoder, order, subframe->entropy_coding_method.data.partitioned_rice.order, decoder->guts->residual[channel]))
return false;
break;
default:
@@ -1131,20 +1157,20 @@ bool stream_decoder_read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned ch
return true;
}
bool stream_decoder_read_subframe_verbatim_(FLAC__StreamDecoder *decoder, unsigned channel)
bool stream_decoder_read_subframe_verbatim_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps)
{
FLAC__Subframe_Verbatim *subframe = &decoder->guts->frame.subframes[channel].data.verbatim;
int32 x;
int32 x, *residual = decoder->guts->residual[channel];
unsigned i;
decoder->guts->frame.subframes[channel].type = FLAC__SUBFRAME_TYPE_VERBATIM;
subframe->data = decoder->guts->residual[channel];
subframe->data = residual;
for(i = 0; i < decoder->guts->frame.header.blocksize; i++) {
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &x, decoder->guts->frame.header.bits_per_sample, read_callback_, decoder))
if(!FLAC__bitbuffer_read_raw_int32(&decoder->guts->input, &x, bps, read_callback_, decoder))
return false; /* the read_callback_ sets the state for us */
subframe->data[i] = x;
residual[i] = x;
}
/* decode the subframe */