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merge down from merged-API-layer branch: cvs -q up -dP -j API_LAYER_MERGING_BASELINE -j API_LAYER_MERGING_BRANCH

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This commit is contained in:
Josh Coalson
2006-09-13 01:42:27 +00:00
parent 461f3eb260
commit 6b21f66784
156 changed files with 8320 additions and 31342 deletions
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50
src/plugin_winamp2/in_flac.c
View File

@@ -35,9 +35,9 @@ static In_Module mod_; /* the input module (declared near t
static char lastfn_[MAX_PATH]; /* currently playing file (used for getting info on the current file) */
flac_config_t flac_cfg;
static file_info_struct file_info_;
static stream_data_struct stream_data_;
static int paused;
static FLAC__FileDecoder *decoder_;
static FLAC__StreamDecoder *decoder_;
static char sample_buffer_[SAMPLES_PER_WRITE * FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS * (24/8) * 2];
/* (24/8) for max bytes per sample, and 2 for DSPs */
@@ -50,7 +50,7 @@ static DWORD WINAPI DecodeThread(void *b); /* the decode thread procedure */
static void init()
{
decoder_ = FLAC__file_decoder_new();
decoder_ = FLAC__stream_decoder_new();
strcpy(lastfn_, "");
InitConfig();
@@ -81,11 +81,11 @@ static int play(char *fn)
if (decoder_ == 0) return 1;
if (!(filesize = FileSize(fn))) return -1;
/* init decoder */
if (!FLAC_plugin__decoder_init(decoder_, fn, filesize, &file_info_, &flac_cfg.output))
if (!FLAC_plugin__decoder_init(decoder_, fn, filesize, &stream_data_, &flac_cfg.output))
return 1;
strcpy(lastfn_, fn);
/* open output */
maxlatency = mod_.outMod->Open(file_info_.sample_rate, file_info_.channels, file_info_.output_bits_per_sample, -1, -1);
maxlatency = mod_.outMod->Open(stream_data_.sample_rate, stream_data_.channels, stream_data_.output_bits_per_sample, -1, -1);
if (maxlatency < 0)
{
FLAC_plugin__decoder_finish(decoder_);
@@ -95,10 +95,10 @@ static int play(char *fn)
mod_.outMod->SetVolume(-666);
mod_.outMod->SetPan(0);
/* initialize vis stuff */
mod_.SAVSAInit(maxlatency, file_info_.sample_rate);
mod_.VSASetInfo(file_info_.sample_rate, file_info_.channels);
mod_.SAVSAInit(maxlatency, stream_data_.sample_rate);
mod_.VSASetInfo(stream_data_.sample_rate, stream_data_.channels);
/* set info */
mod_.SetInfo(file_info_.average_bps, file_info_.sample_rate/1000, file_info_.channels, 1);
mod_.SetInfo(stream_data_.average_bps, stream_data_.sample_rate/1000, stream_data_.channels, 1);
/* start playing thread */
paused = 0;
thread_handle = CreateThread(NULL, 0, DecodeThread, NULL, 0, &thread_id);
@@ -111,7 +111,7 @@ static void stop()
{
if (thread_handle)
{
file_info_.is_playing = false;
stream_data_.is_playing = false;
if (WaitForSingleObject(thread_handle, 2000) == WAIT_TIMEOUT)
{
FLAC_plugin__show_error("Error while stopping decoding thread.");
@@ -149,7 +149,7 @@ static int ispaused()
static int getlength()
{
return file_info_.length_in_msec;
return stream_data_.length_in_msec;
}
static int getoutputtime()
@@ -159,7 +159,7 @@ static int getoutputtime()
static void setoutputtime(int time_in_ms)
{
file_info_.seek_to = time_in_ms;
stream_data_.seek_to = time_in_ms;
}
static void setvolume(int volume)
@@ -214,22 +214,22 @@ static void do_vis(char *data, int nch, int resolution, int position, unsigned s
static DWORD WINAPI DecodeThread(void *unused)
{
const unsigned channels = file_info_.channels;
const unsigned bits_per_sample = file_info_.bits_per_sample;
const unsigned target_bps = file_info_.output_bits_per_sample;
const unsigned sample_rate = file_info_.sample_rate;
const unsigned channels = stream_data_.channels;
const unsigned bits_per_sample = stream_data_.bits_per_sample;
const unsigned target_bps = stream_data_.output_bits_per_sample;
const unsigned sample_rate = stream_data_.sample_rate;
const unsigned fact = channels * (target_bps/8);
while (file_info_.is_playing)
while (stream_data_.is_playing)
{
/* seek needed */
if (file_info_.seek_to != -1)
if (stream_data_.seek_to != -1)
{
const int pos = FLAC_plugin__seek(decoder_, &file_info_);
const int pos = FLAC_plugin__seek(decoder_, &stream_data_);
if (pos != -1) mod_.outMod->Flush(pos);
}
/* stream ended */
else if (file_info_.eof)
else if (stream_data_.eof)
{
if (!mod_.outMod->IsPlaying())
{
@@ -242,7 +242,7 @@ static DWORD WINAPI DecodeThread(void *unused)
else
{
/* decode samples */
int bytes = FLAC_plugin__decode(decoder_, &file_info_, sample_buffer_);
int bytes = FLAC_plugin__decode(decoder_, &stream_data_, sample_buffer_);
const int n = bytes / fact;
/* visualization */
do_vis(sample_buffer_, channels, target_bps, mod_.outMod->GetWrittenTime(), n);
@@ -250,15 +250,15 @@ static DWORD WINAPI DecodeThread(void *unused)
if (mod_.dsp_isactive())
bytes = mod_.dsp_dosamples((short*)sample_buffer_, n, target_bps, channels, sample_rate) * fact;
/* output */
while (mod_.outMod->CanWrite()<bytes && file_info_.is_playing && file_info_.seek_to==-1)
while (mod_.outMod->CanWrite()<bytes && stream_data_.is_playing && stream_data_.seek_to==-1)
Sleep(20);
if (file_info_.is_playing && file_info_.seek_to==-1)
if (stream_data_.is_playing && stream_data_.seek_to==-1)
mod_.outMod->Write(sample_buffer_, bytes);
/* show bitrate */
if (flac_cfg.display.show_bps)
{
const int rate = FLAC_plugin__get_rate(mod_.outMod->GetWrittenTime(), mod_.outMod->GetOutputTime(), &file_info_);
if (rate) mod_.SetInfo(rate/1000, file_info_.sample_rate/1000, file_info_.channels, 1);
const int rate = FLAC_plugin__get_rate(mod_.outMod->GetWrittenTime(), mod_.outMod->GetOutputTime(), &stream_data_);
if (rate) mod_.SetInfo(rate/1000, stream_data_.sample_rate/1000, stream_data_.channels, 1);
}
}
}
@@ -334,7 +334,7 @@ static void getfileinfo(char *filename, char *title, int *length_in_msec)
if (!filename || !*filename) {
filename = lastfn_;
if (length_in_msec) {
*length_in_msec = file_info_.length_in_msec;
*length_in_msec = stream_data_.length_in_msec;
length_in_msec = 0; /* force skip in following code */
}
}

158
src/plugin_winamp2/playback.c
View File

@@ -39,15 +39,15 @@ static FLAC__int64 decode_position, decode_position_last;
* callbacks
*/
static FLAC__StreamDecoderWriteStatus write_callback(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
static FLAC__StreamDecoderWriteStatus write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
{
file_info_struct *file_info = (file_info_struct*)client_data;
const unsigned channels = file_info->channels, wide_samples = frame->header.blocksize;
stream_data_struct *stream_data = (stream_data_struct*)client_data;
const unsigned channels = stream_data->channels, wide_samples = frame->header.blocksize;
unsigned channel;
(void)decoder;
if (file_info->abort_flag)
if (stream_data->abort_flag)
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
for (channel = 0; channel < channels; channel++)
@@ -58,31 +58,31 @@ static FLAC__StreamDecoderWriteStatus write_callback(const FLAC__FileDecoder *de
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
static void metadata_callback(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
static void metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
file_info_struct *file_info = (file_info_struct*)client_data;
stream_data_struct *stream_data = (stream_data_struct*)client_data;
(void)decoder;
if (metadata->type == FLAC__METADATA_TYPE_STREAMINFO)
{
file_info->total_samples = metadata->data.stream_info.total_samples;
file_info->bits_per_sample = metadata->data.stream_info.bits_per_sample;
file_info->channels = metadata->data.stream_info.channels;
file_info->sample_rate = metadata->data.stream_info.sample_rate;
stream_data->total_samples = metadata->data.stream_info.total_samples;
stream_data->bits_per_sample = metadata->data.stream_info.bits_per_sample;
stream_data->channels = metadata->data.stream_info.channels;
stream_data->sample_rate = metadata->data.stream_info.sample_rate;
if (file_info->bits_per_sample!=8 && file_info->bits_per_sample!=16 && file_info->bits_per_sample!=24)
if (stream_data->bits_per_sample!=8 && stream_data->bits_per_sample!=16 && stream_data->bits_per_sample!=24)
{
FLAC_plugin__show_error("This plugin can only handle 8/16/24-bit samples.");
file_info->abort_flag = true;
stream_data->abort_flag = true;
return;
}
{
/* with VC++ you have to spoon feed it the casting from uint64->int64->double */
FLAC__uint64 l = (FLAC__uint64)((double)(FLAC__int64)file_info->total_samples / (double)file_info->sample_rate * 1000.0 + 0.5);
FLAC__uint64 l = (FLAC__uint64)((double)(FLAC__int64)stream_data->total_samples / (double)stream_data->sample_rate * 1000.0 + 0.5);
if (l > INT_MAX)
l = INT_MAX;
file_info->length_in_msec = (int)l;
stream_data->length_in_msec = (int)l;
}
}
else if (metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
@@ -90,71 +90,68 @@ static void metadata_callback(const FLAC__FileDecoder *decoder, const FLAC__Stre
double gain, peak;
if (grabbag__replaygain_load_from_vorbiscomment(metadata, cfg.replaygain.album_mode, /*strict=*/false, &gain, &peak))
{
file_info->has_replaygain = true;
file_info->replay_scale = grabbag__replaygain_compute_scale_factor(peak, gain, (double)cfg.replaygain.preamp, !cfg.replaygain.hard_limit);
stream_data->has_replaygain = true;
stream_data->replay_scale = grabbag__replaygain_compute_scale_factor(peak, gain, (double)cfg.replaygain.preamp, !cfg.replaygain.hard_limit);
}
}
}
static void error_callback(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
static void error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
{
file_info_struct *file_info = (file_info_struct*)client_data;
stream_data_struct *stream_data = (stream_data_struct*)client_data;
(void)decoder;
if (cfg.misc.stop_err || status!=FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC)
file_info->abort_flag = true;
stream_data->abort_flag = true;
}
/*
* init/delete
*/
FLAC__bool FLAC_plugin__decoder_init(FLAC__FileDecoder *decoder, const char *filename, FLAC__int64 filesize, file_info_struct *file_info, output_config_t *config)
FLAC__bool FLAC_plugin__decoder_init(FLAC__StreamDecoder *decoder, const char *filename, FLAC__int64 filesize, stream_data_struct *stream_data, output_config_t *config)
{
FLAC__StreamDecoderInitStatus init_status;
FLAC__ASSERT(decoder);
FLAC_plugin__decoder_finish(decoder);
/* init decoder */
FLAC__file_decoder_set_md5_checking(decoder, false);
FLAC__file_decoder_set_filename(decoder, filename);
FLAC__file_decoder_set_metadata_ignore_all(decoder);
FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
FLAC__file_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback);
FLAC__file_decoder_set_write_callback(decoder, write_callback);
FLAC__file_decoder_set_error_callback(decoder, error_callback);
FLAC__file_decoder_set_client_data(decoder, file_info);
FLAC__stream_decoder_set_md5_checking(decoder, false);
FLAC__stream_decoder_set_metadata_ignore_all(decoder);
FLAC__stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_STREAMINFO);
FLAC__stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT);
if (FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK)
if ((init_status = FLAC__stream_decoder_init_file(decoder, filename, write_callback, metadata_callback, error_callback, /*client_data=*/stream_data)) != FLAC__STREAM_DECODER_INIT_STATUS_OK)
{
FLAC_plugin__show_error("Error while initializing decoder (%s).", FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder)]);
FLAC_plugin__show_error("Error while initializing decoder (%s [%s]).", FLAC__StreamDecoderInitStatusString[init_status], FLAC__stream_decoder_get_resolved_state_string(decoder));
return false;
}
/* process */
cfg = *config;
wide_samples_in_reservoir_ = 0;
file_info->is_playing = false;
file_info->abort_flag = false;
file_info->has_replaygain = false;
stream_data->is_playing = false;
stream_data->abort_flag = false;
stream_data->has_replaygain = false;
if (!FLAC__file_decoder_process_until_end_of_metadata(decoder))
if (!FLAC__stream_decoder_process_until_end_of_metadata(decoder))
{
FLAC_plugin__show_error("Error while processing metadata (%s).", FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder)]);
FLAC_plugin__show_error("Error while processing metadata (%s).", FLAC__stream_decoder_get_resolved_state_string(decoder));
return false;
}
/* check results */
if (file_info->abort_flag) return false; /* metadata callback already popped up the error dialog */
if (stream_data->abort_flag) return false; /* metadata callback already popped up the error dialog */
/* init replaygain */
file_info->output_bits_per_sample = file_info->has_replaygain && cfg.replaygain.enable ?
stream_data->output_bits_per_sample = stream_data->has_replaygain && cfg.replaygain.enable ?
cfg.resolution.replaygain.bps_out :
cfg.resolution.normal.dither_24_to_16 ? min(file_info->bits_per_sample, 16) : file_info->bits_per_sample;
cfg.resolution.normal.dither_24_to_16 ? min(stream_data->bits_per_sample, 16) : stream_data->bits_per_sample;
if (file_info->has_replaygain && cfg.replaygain.enable && cfg.resolution.replaygain.dither)
FLAC__replaygain_synthesis__init_dither_context(&file_info->dither_context, file_info->bits_per_sample, cfg.resolution.replaygain.noise_shaping);
if (stream_data->has_replaygain && cfg.replaygain.enable && cfg.resolution.replaygain.dither)
FLAC__replaygain_synthesis__init_dither_context(&stream_data->dither_context, stream_data->bits_per_sample, cfg.resolution.replaygain.noise_shaping);
/* more inits */
file_info->eof = false;
file_info->seek_to = -1;
file_info->is_playing = true;
file_info->average_bps = (unsigned)(filesize / (125.*(double)(FLAC__int64)file_info->total_samples/(double)file_info->sample_rate));
stream_data->eof = false;
stream_data->seek_to = -1;
stream_data->is_playing = true;
stream_data->average_bps = (unsigned)(filesize / (125.*(double)(FLAC__int64)stream_data->total_samples/(double)stream_data->sample_rate));
bh_index_last_w = 0;
bh_index_last_o = BITRATE_HIST_SIZE;
@@ -165,18 +162,18 @@ FLAC__bool FLAC_plugin__decoder_init(FLAC__FileDecoder *decoder, const char *fil
return true;
}
void FLAC_plugin__decoder_finish(FLAC__FileDecoder *decoder)
void FLAC_plugin__decoder_finish(FLAC__StreamDecoder *decoder)
{
if (decoder && FLAC__file_decoder_get_state(decoder)!=FLAC__FILE_DECODER_UNINITIALIZED)
FLAC__file_decoder_finish(decoder);
if (decoder && FLAC__stream_decoder_get_state(decoder) != FLAC__STREAM_DECODER_UNINITIALIZED)
FLAC__stream_decoder_finish(decoder);
}
void FLAC_plugin__decoder_delete(FLAC__FileDecoder *decoder)
void FLAC_plugin__decoder_delete(FLAC__StreamDecoder *decoder)
{
if (decoder)
{
FLAC_plugin__decoder_finish(decoder);
FLAC__file_decoder_delete(decoder);
FLAC__stream_decoder_delete(decoder);
}
}
@@ -184,68 +181,75 @@ void FLAC_plugin__decoder_delete(FLAC__FileDecoder *decoder)
* decode
*/
int FLAC_plugin__seek(FLAC__FileDecoder *decoder, file_info_struct *file_info)
int FLAC_plugin__seek(FLAC__StreamDecoder *decoder, stream_data_struct *stream_data)
{
int pos;
const FLAC__uint64 target_sample = file_info->total_samples * file_info->seek_to / file_info->length_in_msec;
FLAC__uint64 target_sample = stream_data->total_samples * stream_data->seek_to / stream_data->length_in_msec;
if (!FLAC__file_decoder_seek_absolute(decoder, target_sample))
return -1;
if (stream_data->total_samples > 0 && target_sample >= stream_data->total_samples && target_sample > 0)
target_sample = stream_data->total_samples - 1;
file_info->seek_to = -1;
file_info->eof = false;
/* even if the seek fails we have to reset these so that we don't repeat the seek */
stream_data->seek_to = -1;
stream_data->eof = false;
wide_samples_in_reservoir_ = 0;
pos = (int)(target_sample*1000 / file_info->sample_rate);
pos = (int)(target_sample*1000 / stream_data->sample_rate);
if (!FLAC__stream_decoder_seek_absolute(decoder, target_sample)) {
if(FLAC__stream_decoder_get_state(decoder) == FLAC__STREAM_DECODER_SEEK_ERROR)
FLAC__stream_decoder_flush(decoder);
pos = -1;
}
bh_index_last_o = bh_index_last_w = (pos/BITRATE_HIST_SEGMENT_MSEC) % BITRATE_HIST_SIZE;
if (!FLAC__file_decoder_get_decode_position(decoder, &decode_position))
if (!FLAC__stream_decoder_get_decode_position(decoder, &decode_position))
decode_position = 0;
return pos;
}
unsigned FLAC_plugin__decode(FLAC__FileDecoder *decoder, file_info_struct *file_info, char *sample_buffer)
unsigned FLAC_plugin__decode(FLAC__StreamDecoder *decoder, stream_data_struct *stream_data, char *sample_buffer)
{
/* fill reservoir */
while (wide_samples_in_reservoir_ < SAMPLES_PER_WRITE)
{
if (FLAC__file_decoder_get_state(decoder) == FLAC__FILE_DECODER_END_OF_FILE)
if (FLAC__stream_decoder_get_state(decoder) == FLAC__STREAM_DECODER_END_OF_STREAM)
{
file_info->eof = true;
stream_data->eof = true;
break;
}
else if (!FLAC__file_decoder_process_single(decoder))
else if (!FLAC__stream_decoder_process_single(decoder))
{
FLAC_plugin__show_error("Error while processing frame (%s).", FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder)]);
file_info->eof = true;
FLAC_plugin__show_error("Error while processing frame (%s).", FLAC__stream_decoder_get_resolved_state_string(decoder));
stream_data->eof = true;
break;
}
if (!FLAC__file_decoder_get_decode_position(decoder, &decode_position))
if (!FLAC__stream_decoder_get_decode_position(decoder, &decode_position))
decode_position = 0;
}
/* output samples */
if (wide_samples_in_reservoir_ > 0)
{
const unsigned n = min(wide_samples_in_reservoir_, SAMPLES_PER_WRITE);
const unsigned channels = file_info->channels;
const unsigned channels = stream_data->channels;
unsigned i;
int bytes;
if (cfg.replaygain.enable && file_info->has_replaygain)
if (cfg.replaygain.enable && stream_data->has_replaygain)
{
bytes = FLAC__replaygain_synthesis__apply_gain(
sample_buffer,
true, /* little_endian_data_out */
file_info->output_bits_per_sample == 8, /* unsigned_data_out */
stream_data->output_bits_per_sample == 8, /* unsigned_data_out */
reservoir__,
n,
channels,
file_info->bits_per_sample,
file_info->output_bits_per_sample,
file_info->replay_scale,
stream_data->bits_per_sample,
stream_data->output_bits_per_sample,
stream_data->replay_scale,
cfg.replaygain.hard_limit,
cfg.resolution.replaygain.dither,
&file_info->dither_context
&stream_data->dither_context
);
}
else
@@ -255,8 +259,8 @@ unsigned FLAC_plugin__decode(FLAC__FileDecoder *decoder, file_info_struct *file_
reservoir__,
n,
channels,
file_info->bits_per_sample,
file_info->output_bits_per_sample
stream_data->bits_per_sample,
stream_data->output_bits_per_sample
);
}
@@ -268,12 +272,12 @@ unsigned FLAC_plugin__decode(FLAC__FileDecoder *decoder, file_info_struct *file_
}
else
{
file_info->eof = true;
stream_data->eof = true;
return 0;
}
}
int FLAC_plugin__get_rate(unsigned written_time, unsigned output_time, file_info_struct *file_info)
int FLAC_plugin__get_rate(unsigned written_time, unsigned output_time, stream_data_struct *stream_data)
{
static int bitrate_history_[BITRATE_HIST_SIZE];
unsigned bh_index_w = (written_time/BITRATE_HIST_SEGMENT_MSEC) % BITRATE_HIST_SIZE;
@@ -285,7 +289,7 @@ int FLAC_plugin__get_rate(unsigned written_time, unsigned output_time, file_info
bitrate_history_[(bh_index_w + BITRATE_HIST_SIZE-1)%BITRATE_HIST_SIZE] =
decode_position>decode_position_last && written_time > written_time_last ?
(unsigned)(8000*(decode_position - decode_position_last)/(written_time - written_time_last)) :
file_info->average_bps;
stream_data->average_bps;
bh_index_last_w = bh_index_w;
written_time_last = written_time;

14
src/plugin_winamp2/playback.h
View File

@@ -48,7 +48,7 @@ typedef struct {
FLAC__bool has_replaygain;
double replay_scale;
DitherContext dither_context;
} file_info_struct;
} stream_data_struct;
typedef struct {
@@ -77,13 +77,13 @@ typedef struct {
* protopytes
*/
FLAC__bool FLAC_plugin__decoder_init(FLAC__FileDecoder *decoder, const char *filename, FLAC__int64 filesize, file_info_struct *file_info, output_config_t *config);
void FLAC_plugin__decoder_finish(FLAC__FileDecoder *decoder);
void FLAC_plugin__decoder_delete(FLAC__FileDecoder *decoder);
FLAC__bool FLAC_plugin__decoder_init(FLAC__StreamDecoder *decoder, const char *filename, FLAC__int64 filesize, stream_data_struct *stream_data, output_config_t *config);
void FLAC_plugin__decoder_finish(FLAC__StreamDecoder *decoder);
void FLAC_plugin__decoder_delete(FLAC__StreamDecoder *decoder);
int FLAC_plugin__seek(FLAC__FileDecoder *decoder, file_info_struct *file_info);
unsigned FLAC_plugin__decode(FLAC__FileDecoder *decoder, file_info_struct *file_info, char *sample_buffer);
int FLAC_plugin__get_rate(unsigned written_time, unsigned output_time, file_info_struct *file_info);
int FLAC_plugin__seek(FLAC__StreamDecoder *decoder, stream_data_struct *stream_data);
unsigned FLAC_plugin__decode(FLAC__StreamDecoder *decoder, stream_data_struct *stream_data, char *sample_buffer);
int FLAC_plugin__get_rate(unsigned written_time, unsigned output_time, stream_data_struct *stream_data);
/*
* these should be defined in plug-in