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Initial work on the audio queue data source.

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Public issue https://github.com/mackron/miniaudio/issues/744
This commit is contained in:
David Reid
2026-01-22 11:29:53 +10:00
parent ba963e46b5
commit 8a43271555
2 changed files with 327 additions and 3 deletions
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examples/duplex_effect.c
+6 -3
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@@ -15,7 +15,7 @@ effect.
#define DEVICE_CHANNELS 1 /* For this example, always set to 1. */
static ma_waveform g_sourceData; /* The underlying data source of the source node. */
static ma_audio_buffer_ref g_exciteData; /* The underlying data source of the excite node. */
static ma_audio_queue g_exciteData; /* The underlying data source of the excite node. */
static ma_data_source_node g_sourceNode; /* A data source node containing the source data we'll be sending through to the vocoder. This will be routed into the first bus of the vocoder node. */
static ma_data_source_node g_exciteNode; /* A data source node containing the excite data we'll be sending through to the vocoder. This will be routed into the second bus of the vocoder node. */
static ma_vocoder_node g_vocoderNode; /* The vocoder node. */
@@ -37,7 +37,7 @@ void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uin
the data source is our `pInput` buffer. We need to update the underlying data source so that it
read data from `pInput`.
*/
ma_audio_buffer_ref_set_data(&g_exciteData, pInput, frameCount);
ma_audio_queue_push_pcm_frames(&g_exciteData, pInput, frameCount);
/* With the source buffer configured we can now read directly from the node graph. */
ma_node_graph_read_pcm_frames(&g_nodeGraph, pOutput, frameCount, NULL);
@@ -53,6 +53,7 @@ int main(int argc, char** argv)
ma_data_source_node_config sourceNodeConfig;
ma_data_source_node_config exciteNodeConfig;
ma_waveform_config waveformConfig;
ma_audio_queue_config audioQueueConfig;
deviceConfig = ma_device_config_init(ma_device_type_duplex);
deviceConfig.capture.pDeviceID = NULL;
@@ -115,7 +116,9 @@ int main(int argc, char** argv)
/* Excite/modulator. Attached to input bus 1 of the vocoder node. */
result = ma_audio_buffer_ref_init(device.capture.format, device.capture.channels, device.sampleRate, NULL, 0, &g_exciteData);
audioQueueConfig = ma_audio_queue_config_init(device.capture.format, device.capture.channels, device.sampleRate, 0);
result = ma_audio_queue_init(&audioQueueConfig, &g_exciteData);
if (result != MA_SUCCESS) {
printf("Failed to initialize audio buffer for source.");
goto done2;