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Update reverb and vocoder examples.

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This commit is contained in:
David Reid
2026-04-29 13:08:50 +10:00
parent ab15b24065
commit 1129061e19
2 changed files with 32 additions and 23 deletions
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extras/nodes/ma_vocoder_node/ma_vocoder_node_example.c
+20 -15
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@@ -11,15 +11,15 @@ effect.
#include <stdio.h>
#define DEVICE_FORMAT ma_format_f32 /* Must always be f32 for this example because the node graph system only works with this. */
#define DEVICE_CHANNELS 1 /* For this example, always set to 1. */
#define DEVICE_FORMAT ma_format_f32 /* Must always be f32 for this example because the node graph system only works with this. */
#define DEVICE_CHANNELS 1 /* For this example, always set to 1. */
static ma_waveform g_sourceData; /* The underlying data source of the excite node. */
static ma_audio_buffer_ref g_exciteData; /* The underlying data source of the source 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. */
static ma_node_graph g_nodeGraph;
static ma_waveform g_sourceData; /* The underlying data source of the excite node. */
static ma_audio_ring_buffer g_exciteData; /* The underlying data source of the source 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. */
static ma_node_graph g_nodeGraph;
void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount)
{
@@ -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_ring_buffer_write_pcm_frames(&g_exciteData, pInput, frameCount, NULL);
/* 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_ring_buffer_config ringBufferConfig;
deviceConfig = ma_device_config_init(ma_device_type_duplex);
deviceConfig.capture.pDeviceID = NULL;
@@ -100,7 +101,7 @@ int main(int argc, char** argv)
result = ma_waveform_init(&waveformConfig, &g_sourceData);
if (result != MA_SUCCESS) {
printf("Failed to initialize waveform for excite node.");
goto done3;
goto done2;
}
sourceNodeConfig = ma_data_source_node_config_init(&g_sourceData);
@@ -115,10 +116,12 @@ 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);
ringBufferConfig = ma_audio_ring_buffer_config_init(device.capture.format, device.capture.channels, device.sampleRate, device.capture.internalPeriodSizeInFrames * 3);
result = ma_audio_ring_buffer_init(&ringBufferConfig, &g_exciteData);
if (result != MA_SUCCESS) {
printf("Failed to initialize audio buffer for source.");
goto done2;
goto done4;
}
exciteNodeConfig = ma_data_source_node_config_init(&g_exciteData);
@@ -126,7 +129,7 @@ int main(int argc, char** argv)
result = ma_data_source_node_init(&g_nodeGraph, &exciteNodeConfig, NULL, &g_exciteNode);
if (result != MA_SUCCESS) {
printf("Failed to initialize source node.");
goto done2;
goto done5;
}
ma_node_attach_output_bus(&g_exciteNode, 0, &g_vocoderNode, 1);
@@ -140,8 +143,10 @@ int main(int argc, char** argv)
/* It's important that we stop the device first or else we'll uninitialize the graph from under the device. */
ma_device_stop(&device);
/*done4:*/ ma_data_source_node_uninit(&g_exciteNode, NULL);
done3: ma_data_source_node_uninit(&g_sourceNode, NULL);
/*done6:*/ ma_data_source_node_uninit(&g_exciteNode, NULL);
done5: ma_audio_ring_buffer_uninit(&g_exciteData);
done4: ma_data_source_node_uninit(&g_sourceNode, NULL);
done3: ma_waveform_uninit(&g_sourceData);
done2: ma_vocoder_node_uninit(&g_vocoderNode, NULL);
done1: ma_node_graph_uninit(&g_nodeGraph);
done0: ma_device_uninit(&device);