mirror/miniaudio
1
0
Fork 0
mirror of https://github.com/mackron/miniaudio.git synced 2026-04-22 00:06:59 +02:00
Code Issues Packages Projects Releases Wiki Activity

Update the hilo_interop example to use the new ring buffer.

Browse Source
This commit is contained in:
David Reid
2026-01-25 18:46:25 +10:00
parent ca6afd1f49
commit 5a7bfd7c2c
1 changed files with 7 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files
examples/hilo_interop.c
+7 -39
View File
@@ -17,43 +17,18 @@ may be updated to make use of a more advanced data source that handles all of th
*/
#include "../miniaudio.c"
static ma_pcm_rb rb;
static ma_audio_ring_buffer rb;
static ma_device device;
static ma_engine engine;
static ma_sound sound; /* The sound will be the playback of the capture side. */
void capture_data_callback(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
ma_result result;
ma_uint32 framesWritten;
(void)pFramesOut;
(void)pDevice;
/* We need to write to the ring buffer. Need to do this in a loop. */
framesWritten = 0;
while (framesWritten < frameCount) {
void* pMappedBuffer;
ma_uint32 framesToWrite = frameCount - framesWritten;
result = ma_pcm_rb_acquire_write(&rb, &framesToWrite, &pMappedBuffer);
if (result != MA_SUCCESS) {
break;
}
if (framesToWrite == 0) {
break;
}
/* Copy the data from the capture buffer to the ring buffer. */
ma_copy_pcm_frames(pMappedBuffer, ma_offset_pcm_frames_const_ptr_f32((const float*)pFramesIn, framesWritten, pDevice->capture.channels), framesToWrite, pDevice->capture.format, pDevice->capture.channels);
result = ma_pcm_rb_commit_write(&rb, framesToWrite);
if (result != MA_SUCCESS) {
break;
}
framesWritten += framesToWrite;
}
/* We need to write to the ring buffer. */
ma_audio_ring_buffer_write_pcm_frames(&rb, pFramesIn, frameCount, NULL);
}
int main(int argc, char** argv)
@@ -83,20 +58,13 @@ int main(int argc, char** argv)
return -1;
}
/* Initialize the ring buffer. */
result = ma_pcm_rb_init(device.capture.format, device.capture.channels, device.capture.internalPeriodSizeInFrames * 5, NULL, NULL, &rb);
/* Initialize the ring buffer. Make sure the sample rate is set so the engine can resample it if necessary. */
result = ma_audio_ring_buffer_init(device.capture.format, device.capture.channels, device.sampleRate, device.capture.internalPeriodSizeInFrames * 3, NULL, &rb);
if (result != MA_SUCCESS) {
printf("Failed to initialize the ring buffer.");
return -1;
}
/*
Ring buffers don't require a sample rate for their normal operation, but we can associate it
with a sample rate. We'll want to do this so the engine can resample if necessary.
*/
ma_pcm_rb_set_sample_rate(&rb, device.sampleRate);
/*
At this point the capture side is set up and we can now set up the playback side. Here we are
@@ -137,7 +105,7 @@ int main(int argc, char** argv)
ma_sound_uninit(&sound);
ma_engine_uninit(&engine);
ma_device_uninit(&device);
ma_pcm_rb_uninit(&rb);
ma_audio_ring_buffer_uninit(&rb);
(void)argc;