mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-21 02:45:52 +01:00
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
|
#include "../vgmstream.h"
|
||
|
|
|
||
|
|
void decode_hca(hca_codec_data * data, sample * outbuf, int32_t samples_to_do, int channels) {
|
||
|
|
int samples_done = 0;
|
||
|
|
|
||
|
|
int32_t samples_remain = clHCA_samplesPerBlock - data->sample_ptr;
|
||
|
|
|
||
|
|
void *hca_data = NULL;
|
||
|
|
|
||
|
|
clHCA *hca;
|
||
|
|
|
||
|
|
if ( data->samples_discard ) {
|
||
|
|
if ( samples_remain <= data->samples_discard ) {
|
||
|
|
data->samples_discard -= samples_remain;
|
||
|
|
samples_remain = 0;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
samples_remain -= data->samples_discard;
|
||
|
|
data->sample_ptr += data->samples_discard;
|
||
|
|
data->samples_discard = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( samples_remain > samples_to_do ) samples_remain = samples_to_do;
|
||
|
|
|
||
|
|
memcpy( outbuf, data->sample_buffer + data->sample_ptr * data->info.channelCount, samples_remain * data->info.channelCount * sizeof(sample) );
|
||
|
|
|
||
|
|
outbuf += samples_remain * data->info.channelCount;
|
||
|
|
|
||
|
|
data->sample_ptr += samples_remain;
|
||
|
|
|
||
|
|
samples_done += samples_remain;
|
||
|
|
|
||
|
|
hca_data = malloc( data->info.blockSize );
|
||
|
|
|
||
|
|
if ( !hca_data ) return;
|
||
|
|
|
||
|
|
hca = (clHCA *)(data + 1);
|
||
|
|
|
||
|
|
while ( samples_done < samples_to_do ) {
|
||
|
|
const unsigned int blockSize = data->info.blockSize;
|
||
|
|
const unsigned int channelCount = data->info.channelCount;
|
||
|
|
const unsigned int address = data->info.dataOffset + data->curblock * blockSize;
|
||
|
|
|
||
|
|
if (data->curblock >= data->info.blockCount) {
|
||
|
|
memset(outbuf, 0, (samples_to_do - samples_done) * channelCount * sizeof(sample));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( read_streamfile((uint8_t*) hca_data, data->start + address, blockSize, data->streamfile) != blockSize )
|
||
|
|
break;
|
||
|
|
|
||
|
|
if ( clHCA_Decode( hca, hca_data, blockSize, address ) < 0 )
|
||
|
|
break;
|
||
|
|
|
||
|
|
++data->curblock;
|
||
|
|
|
||
|
|
clHCA_DecodeSamples16( hca, data->sample_buffer );
|
||
|
|
|
||
|
|
samples_remain = clHCA_samplesPerBlock;
|
||
|
|
data->sample_ptr = 0;
|
||
|
|
if ( data->samples_discard ) {
|
||
|
|
if ( samples_remain <= data->samples_discard ) {
|
||
|
|
data->samples_discard -= samples_remain;
|
||
|
|
samples_remain = 0;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
samples_remain -= data->samples_discard;
|
||
|
|
data->sample_ptr = data->samples_discard;
|
||
|
|
data->samples_discard = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( samples_remain > samples_to_do - samples_done ) samples_remain = samples_to_do - samples_done;
|
||
|
|
memcpy( outbuf, data->sample_buffer, samples_remain * channelCount * sizeof(sample) );
|
||
|
|
samples_done += samples_remain;
|
||
|
|
outbuf += samples_remain * channelCount;
|
||
|
|
data->sample_ptr = samples_remain;
|
||
|
|
}
|
||
|
|
|
||
|
|
free( hca_data );
|
||
|
|
}
|