CTCaer/RetroArch
1
0
Fork 0
mirror of https://github.com/CTCaer/RetroArch.git synced 2024-12-25 20:25:42 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

allocate enough memory for resampler, always put two channels into buffers

Browse Source
This commit is contained in:
Brad Parker 2017-01-26 00:59:53 -05:00
parent f8ad1c6622
commit 6a79a81e4d
2 changed files with 48 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
libretro-common/audio/audio_mix.c
View File

@ -129,7 +129,7 @@ audio_chunk_t* audio_mix_load_wav_file(const char *path, int sample_rate)
return NULL;
}
chunk->upsample_buf = (int16_t*)memalign_alloc_aligned(chunk->rwav->numsamples * chunk->rwav->numchannels * sizeof(int16_t));
chunk->upsample_buf = (int16_t*)memalign_alloc_aligned(chunk->rwav->numsamples * 2 * sizeof(int16_t));
sample_size = chunk->rwav->bitspersample / 8;
@ -139,18 +139,34 @@ audio_chunk_t* audio_mix_load_wav_file(const char *path, int sample_rate)
for (i = 0; i < chunk->rwav->numsamples; i++)
{
unsigned channel;
uint8_t *sample = ((uint8_t*)chunk->rwav->samples) +
(sample_size * i * chunk->rwav->numchannels);
(i * chunk->rwav->numchannels);
for (channel = 0; channel < chunk->rwav->numchannels; channel++)
{
chunk->upsample_buf[i] = (int16_t)((sample[channel] - 128) << 8);
}
chunk->upsample_buf[i * 2] = (int16_t)((sample[0] - 128) << 8);
if (chunk->rwav->numchannels == 1)
chunk->upsample_buf[(i * 2) + 1] = (int16_t)((sample[0] - 128) << 8);
else if (chunk->rwav->numchannels == 2)
chunk->upsample_buf[(i * 2) + 1] = (int16_t)((sample[1] - 128) << 8);
}
}
else if (sample_size == 2)
memcpy(chunk->upsample_buf, chunk->rwav->samples, chunk->rwav->subchunk2size);
{
if (chunk->rwav->numchannels == 1)
{
unsigned i;
for (i = 0; i < chunk->rwav->numsamples; i++)
{
uint16_t *sample = ((uint16_t*)chunk->rwav->samples) + i;
chunk->upsample_buf[i * 2] = (int16_t)((sample[0] - 128) << 8);
chunk->upsample_buf[(i * 2) + 1] = (int16_t)((sample[0] - 128) << 8);
}
}
else if (chunk->rwav->numchannels == 2)
memcpy(chunk->upsample_buf, chunk->rwav->samples, chunk->rwav->subchunk2size);
}
else if (sample_size != 2)
{
/* we don't support any other sample size besides 8 and 16-bit yet */
@ -173,8 +189,8 @@ audio_chunk_t* audio_mix_load_wav_file(const char *path, int sample_rate)
{
struct resampler_data info = {0};
chunk->float_buf = (float*)memalign_alloc_aligned(chunk->rwav->numsamples * chunk->rwav->numchannels * sizeof(float));
chunk->float_resample_buf = (float*)memalign_alloc_aligned(chunk->rwav->numsamples * 2 * chunk->ratio * chunk->rwav->numchannels * sizeof(float));
chunk->float_buf = (float*)memalign_alloc_aligned(chunk->rwav->numsamples * 2 * chunk->ratio * chunk->rwav->numchannels * sizeof(float));
chunk->float_resample_buf = (float*)memalign_alloc_aligned(chunk->rwav->numsamples * 3 * chunk->ratio * chunk->rwav->numchannels * sizeof(float));
convert_s16_to_float(chunk->float_buf, chunk->upsample_buf, chunk->rwav->numsamples * chunk->rwav->numchannels, 1.0);
@ -255,6 +271,26 @@ int16_t audio_mix_get_chunk_sample(audio_chunk_t *chunk, unsigned channel, size_
}
}
int16_t* audio_mix_get_chunk_samples(audio_chunk_t *chunk)
{
if (!chunk)
return 0;
if (chunk->rwav)
{
int16_t *sample;
if (chunk->resample)
sample = chunk->resample_buf;
else
sample = chunk->upsample_buf;
return sample;
}
return NULL;
}
int audio_mix_get_chunk_num_channels(audio_chunk_t *chunk)
{
if (!chunk)

2
libretro-common/include/audio/audio_mix.h
View File

@ -80,6 +80,8 @@ size_t audio_mix_get_chunk_num_samples(audio_chunk_t *chunk);
**/
int16_t audio_mix_get_chunk_sample(audio_chunk_t *chunk, unsigned channel, size_t sample);
int16_t* audio_mix_get_chunk_samples(audio_chunk_t *chunk);
int audio_mix_get_chunk_num_channels(audio_chunk_t *chunk);
RETRO_END_DECLS