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Deal with multichannel WavPack files

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This commit is contained in:
Luciano Iam 2022-09-29 09:08:32 +02:00 • committed by Paul Ferrand
parent 2e388848d3
commit d1158bae66
1 changed files with 19 additions and 10 deletions
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29
external/st_audiofile/src/st_audiofile.c vendored
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@ -498,11 +498,12 @@ uint64_t st_read_s16(st_audio_file* af, int16_t* buffer, uint64_t count)
break;
case st_audio_file_wv:
{
int32_t* buf_i32 = (int32_t*)malloc(4 * count);
uint32_t channels = af->cache.wv.channels;
int32_t* buf_i32 = (int32_t*)malloc(4 * channels * count);
if (!buf_i32) {
return 0;
}
count = WavpackUnpackSamples(af->wv, buf_i32, (uint32_t)count);
count = channels * WavpackUnpackSamples(af->wv, buf_i32, (uint32_t)count);
if (af->cache.wv.mode & MODE_FLOAT) {
drwav_f32_to_s16((drwav_int16*)buffer, (float*)buf_i32, (size_t)count);
} else {
@ -544,15 +545,23 @@ uint64_t st_read_f32(st_audio_file* af, float* buffer, uint64_t count)
count = drmp3_read_pcm_frames_f32(af->mp3, count, buffer);
break;
case st_audio_file_wv:
count = WavpackUnpackSamples(af->wv, (int32_t*)buffer, (uint32_t)count);
if (!(af->cache.wv.mode & MODE_FLOAT)) {
if (af->cache.wv.bitrate < 32) {
int d = 32 - af->cache.wv.bitrate;
for (uint64_t i = 0; i < count; i++) {
((int32_t*)buffer)[i] <<= d;
}
{
uint32_t channels = af->cache.wv.channels;
int32_t* buf_i32 = (int32_t*)malloc(4 * channels * count);
if (!buf_i32) {
return 0;
}
drwav_s32_to_f32(buffer, (drwav_int32*)buffer, (size_t)count);
count = channels * WavpackUnpackSamples(af->wv, buf_i32, (uint32_t)count);
if (!(af->cache.wv.mode & MODE_FLOAT)) {
if (af->cache.wv.bitrate < 32) {
int d = 32 - af->cache.wv.bitrate;
for (uint64_t i = 0; i < count; i++) {
buf_i32[i] <<= d;
}
}
drwav_s32_to_f32(buffer, (drwav_int32*)buf_i32, (size_t)count);
}
free(buf_i32);
}
break;
}