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Enable the 'synth.audio-channels' setting for the CoreAudio driver.

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This commit is contained in:
Matt Taylor 2022-04-15 12:07:53 -06:00
parent 5dcae73657
commit 49a3b410f0
1 changed files with 21 additions and 35 deletions
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56
src/drivers/fluid_coreaudio.c
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@ -52,7 +52,7 @@ typedef struct
fluid_audio_func_t callback;
void *data;
unsigned int buffer_size;
float *buffers[2];
float **buffers;
double phase;
} fluid_core_audio_driver_t;
@ -171,7 +171,7 @@ new_fluid_core_audio_driver2(fluid_settings_t *settings, fluid_audio_func_t func
{
char *devname = NULL;
fluid_core_audio_driver_t *dev = NULL;
int period_size, periods;
int period_size, periods, audio_channels = 1;
double sample_rate;
OSStatus status;
UInt32 size;
@ -245,10 +245,14 @@ new_fluid_core_audio_driver2(fluid_settings_t *settings, fluid_audio_func_t func
goto error_recovery;
}
fluid_settings_getint(settings, "synth.audio-channels", &audio_channels);
fluid_settings_getnum(settings, "synth.sample-rate", &sample_rate);
fluid_settings_getint(settings, "audio.periods", &periods);
fluid_settings_getint(settings, "audio.period-size", &period_size);
/* audio channels are in stereo, with a minimum of one pair */
audio_channels = (audio_channels > 0) ? (2 * audio_channels) : 2;
/* get the selected device name. if none is specified, use NULL for the default device. */
if(fluid_settings_dupstr(settings, "audio.coreaudio.device", &devname) == FLUID_OK /* alloc device name */
&& devname && strlen(devname) > 0)
@ -303,11 +307,11 @@ new_fluid_core_audio_driver2(fluid_settings_t *settings, fluid_audio_func_t func
// necessary from our format to the device's format.
dev->format.mSampleRate = sample_rate; // sample rate of the audio stream
dev->format.mFormatID = kAudioFormatLinearPCM; // encoding type of the audio stream
dev->format.mFormatFlags = kLinearPCMFormatFlagIsFloat;
dev->format.mBytesPerPacket = 2 * sizeof(float);
dev->format.mFormatFlags = kLinearPCMFormatFlagIsFloat | kAudioFormatFlagIsNonInterleaved;
dev->format.mBytesPerPacket = sizeof(float);
dev->format.mFramesPerPacket = 1;
dev->format.mBytesPerFrame = 2 * sizeof(float);
dev->format.mChannelsPerFrame = 2;
dev->format.mBytesPerFrame = sizeof(float);
dev->format.mChannelsPerFrame = audio_channels;
dev->format.mBitsPerChannel = 8 * sizeof(float);
FLUID_LOG(FLUID_DBG, "mSampleRate %g", dev->format.mSampleRate);
@ -346,10 +350,9 @@ new_fluid_core_audio_driver2(fluid_settings_t *settings, fluid_audio_func_t func
FLUID_LOG(FLUID_DBG, "MaximumFramesPerSlice = %d", dev->buffer_size);
dev->buffers[0] = FLUID_ARRAY(float, dev->buffer_size);
dev->buffers[1] = FLUID_ARRAY(float, dev->buffer_size);
dev->buffers = FLUID_ARRAY(float *, audio_channels);
if(dev->buffers[0] == NULL || dev->buffers[1] == NULL)
if(dev->buffers == NULL)
{
FLUID_LOG(FLUID_ERR, "Out of memory.");
goto error_recovery;
@ -396,14 +399,9 @@ delete_fluid_core_audio_driver(fluid_audio_driver_t *p)
AudioComponentInstanceDispose(dev->outputUnit);
#endif
if(dev->buffers[0])
if(dev->buffers != NULL)
{
FLUID_FREE(dev->buffers[0]);
}
if(dev->buffers[1])
{
FLUID_FREE(dev->buffers[1]);
FLUID_FREE(dev->buffers);
}
FLUID_FREE(dev);
@ -417,30 +415,18 @@ fluid_core_audio_callback(void *data,
UInt32 inNumberFrames,
AudioBufferList *ioData)
{
int i, k;
fluid_core_audio_driver_t *dev = (fluid_core_audio_driver_t *) data;
int len = inNumberFrames;
float *buffer = ioData->mBuffers[0].mData;
UInt32 i, nBuffers = ioData->mNumberBuffers;
fluid_audio_func_t callback = (dev->callback != NULL) ? dev->callback : (fluid_audio_func_t) fluid_synth_process;
if(dev->callback)
for(i = 0; i < ioData->mNumberBuffers; i++)
{
float *left = dev->buffers[0];
float *right = dev->buffers[1];
FLUID_MEMSET(left, 0, len * sizeof(float));
FLUID_MEMSET(right, 0, len * sizeof(float));
(*dev->callback)(dev->data, len, 0, NULL, 2, dev->buffers);
for(i = 0, k = 0; i < len; i++)
{
buffer[k++] = left[i];
buffer[k++] = right[i];
}
dev->buffers[i] = ioData->mBuffers[i].mData;
FLUID_MEMSET(dev->buffers[i], 0, len * sizeof(float));
}
else
fluid_synth_write_float((fluid_synth_t *) dev->data, len, buffer, 0, 2,
buffer, 1, 2);
callback(dev->data, len, nBuffers, dev->buffers, nBuffers, dev->buffers);
return noErr;
}