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flycast
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Merge branch 'master' of https://github.com/flyinghead/flycast

This commit is contained in:
Flyinghead 2020-11-17 17:53:55 +01:00
parent 6280ed1507 643961f9e6
commit 03e5988397
1 changed files with 18 additions and 1 deletions
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19
core/oslib/audiobackend_coreaudio.cpp
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@ -40,6 +40,7 @@ static OSStatus coreaudio_callback(void* ctx, AudioUnitRenderActionFlags* flags,
for (int i = 0; i < abl->mNumberBuffers; i++)
{
u32 buf_size = abl->mBuffers[i].mDataByteSize;
u8* out_buffer = reinterpret_cast<u8*>(abl->mBuffers[i].mData);
if ((samples_wptr - samples_rptr + BUFSIZE) % BUFSIZE < buf_size)
{
//printf("Core Audio: buffer underrun");
@ -47,8 +48,24 @@ static OSStatus coreaudio_callback(void* ctx, AudioUnitRenderActionFlags* flags,
}
else
{
memcpy(abl->mBuffers[i].mData, samples_temp + samples_rptr, buf_size);
if (samples_rptr + buf_size > BUFSIZE)
{
// The data wraps around the buffer, so we need to do 2 copies
int size1 = BUFSIZE - samples_rptr;
int size2 = buf_size - size1;
memcpy(out_buffer, samples_temp + samples_rptr, size1);
memcpy(out_buffer + size1, samples_temp, size2);
}
else
{
memcpy(out_buffer, samples_temp + samples_rptr, buf_size);
}
// Increment the read pointer
samples_rptr = (samples_rptr + buf_size) % BUFSIZE;
// Set the mutex to allow writing
bufferEmpty.Set();
}
}