static DWORD WINAPI DecodeThread(void *unused)
{
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 (stream_data_.is_playing)
{
/* seek needed */
if (stream_data_.seek_to != -1)
{
const int pos = FLAC_plugin__seek(decoder_, &stream_data_);
if (pos != -1) mod_.outMod->Flush(pos);
}
/* stream ended */
else if (stream_data_.eof)
{
if (!mod_.outMod->IsPlaying())
{
PostMessage(mod_.hMainWindow, WM_WA_MPEG_EOF, 0, 0);
return 0;
}
Sleep(10);
}
/* decode */
else
{
/* decode samples */
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);
/* dsp */
if (mod_.dsp_isactive())
bytes = mod_.dsp_dosamples((short*)sample_buffer_, n, target_bps, channels, sample_rate) * fact;
/* output */
while (mod_.outMod->CanWrite()<bytes && stream_data_.is_playing && stream_data_.seek_to==-1)
Sleep(20);
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(), &stream_data_);
if (rate) mod_.SetInfo(rate/1000, stream_data_.sample_rate/1000, stream_data_.channels, 1);
}
}
}
return 0;
}
DWORD WINAPI __stdcall DecodeThread(void *b)
{
int done = 0;
while(! *((int *)b) ) {
const unsigned channels = file_info_.channels;
const unsigned bits_per_sample = file_info_.bits_per_sample;
#ifdef FLAC__DO_DITHER
const unsigned target_bps = min(bits_per_sample, 16);
#else
const unsigned target_bps = bits_per_sample;
#endif
const unsigned sample_rate = file_info_.sample_rate;
if(seek_needed_ != -1) {
const double distance = (double)seek_needed_ / (double)getlength();
const unsigned target_sample = (unsigned)(distance * (double)file_info_.total_samples);
if(FLAC__file_decoder_seek_absolute(decoder_, (FLAC__uint64)target_sample)) {
decode_pos_ms_ = (int)(distance * (double)getlength());
seek_needed_ = -1;
done = 0;
mod_.outMod->Flush(decode_pos_ms_);
}
}
if(done) {
if(!mod_.outMod->IsPlaying()) {
PostMessage(mod_.hMainWindow, WM_WA_MPEG_EOF, 0, 0);
return 0;
}
Sleep(10);
}
else if(mod_.outMod->CanWrite() >= ((int)(SAMPLES_PER_WRITE*channels*((target_bps+7)/8)) << (mod_.dsp_isactive()?1:0))) {
while(wide_samples_in_reservoir_ < SAMPLES_PER_WRITE) {
if(FLAC__file_decoder_get_state(decoder_) == FLAC__FILE_DECODER_END_OF_FILE) {
done = 1;
break;
}
else if(!FLAC__file_decoder_process_single(decoder_)) {
MessageBox(mod_.hMainWindow, FLAC__FileDecoderStateString[FLAC__file_decoder_get_state(decoder_)], "READ ERROR processing frame", 0);
done = 1;
break;
}
}
if(wide_samples_in_reservoir_ == 0) {
done = 1;
}
else {
const unsigned n = min(wide_samples_in_reservoir_, SAMPLES_PER_WRITE);
const unsigned delta = n * channels;
int bytes = (int)FLAC__plugin_common__pack_pcm_signed_little_endian(sample_buffer_, reservoir_, n, channels, bits_per_sample, target_bps);
unsigned i;
for(i = delta; i < wide_samples_in_reservoir_ * channels; i++)
reservoir_[i-delta] = reservoir_[i];
wide_samples_in_reservoir_ -= n;
do_vis((char *)sample_buffer_, channels, target_bps, decode_pos_ms_, n);
decode_pos_ms_ += (n*1000 + sample_rate/2)/sample_rate;
if(mod_.dsp_isactive())
bytes = mod_.dsp_dosamples((short *)sample_buffer_, n, target_bps, channels, sample_rate) * (channels*target_bps/8);
mod_.outMod->Write(sample_buffer_, bytes);
}
}
else Sleep(20);
}
return 0;
}
