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Fix FSB vorbis looping

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This commit is contained in:
bnnm 2017-03-25 19:05:18 +01:00
parent 003e48e88c
commit ab05279629
1 changed files with 15 additions and 13 deletions
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20
src/coding/fsb_vorbis_decoder.c
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@ -3,7 +3,7 @@
#ifdef VGM_USE_VORBIS
#include <vorbis/codec.h>
#define FSB_VORBIS_ON 0 //todo recompile libvorbis and remove
#define FSB_VORBIS_ON 0 //todo recompile libvorbis with vorbis_* and remove
#define FSB_VORBIS_DEFAULT_BUFFER_SIZE 0x8000 /* should be at least the size of the setup header, ~0x2000 */
@ -90,13 +90,10 @@ void decode_fsb_vorbis(VGMSTREAM * vgmstream, sample * outbuf, int32_t samples_t
/* extra EOF check for edge cases */
if (stream->offset > stream_size) {
//todo e_o_s on eof?
memset(outbuf + samples_done * channels, 0, (samples_to_do - samples_done) * sizeof(sample));
break;
}
//todo discard samples
if (data->samples_full) { /* read more samples */
int samples_to_get;
@ -109,17 +106,23 @@ void decode_fsb_vorbis(VGMSTREAM * vgmstream, sample * outbuf, int32_t samples_t
continue;
}
if (data->samples_to_discard) {
/* discard samples for looping */
if (samples_to_get > data->samples_to_discard)
samples_to_get = data->samples_to_discard;
data->samples_to_discard -= samples_to_get;
}
else {
/* get max samples and convert from Vorbis float pcm to 16bit pcm */
if (samples_to_get > samples_to_do - samples_done)
samples_to_get = samples_to_do - samples_done;
samples_done += samples_to_get;
pcm_convert_float_to_16(data, outbuf + samples_done * channels, samples_to_get, pcm);
}
/* mark consumed samples from the buffer
* (non-consumed samples are returned in next vorbis_synthesis_pcmout calls) */
vorbis_synthesis_read(&data->vd, samples_to_get);
samples_done += samples_to_get;
}
else { /* read more data */
int rc;
@ -181,8 +184,6 @@ static void pcm_convert_float_to_16(vorbis_codec_data * data, sample * outbuf, i
float *mono = pcm[i];
for (j = 0; j < samples_to_do; j++) {
int val = floor(mono[j] * 32767.f + .5f);
//int val=mono[j]*32767.f+drand48()-0.5f; /* optional dither */
if (val > 32767) val = 32767;
if (val < -32768) val = -32768;
@ -326,6 +327,7 @@ void seek_fsb_vorbis(VGMSTREAM *vgmstream, int32_t num_sample) {
* To avoid having to parse different formats we'll just discard until the expected sample */
vorbis_synthesis_restart(&data->vd);
data->samples_to_discard = num_sample;
vgmstream->loop_ch[0].offset = vgmstream->loop_ch[0].channel_start_offset;
#endif
}