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Remove unnecessary example.

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The delay node is demonstrated in the engine_effects example.
This commit is contained in:
David Reid
2025-02-22 14:36:46 +10:00
parent 9f10bc7540
commit 37b95f0f42
1 changed files with 0 additions and 120 deletions
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extras/nodes/ma_delay_node/ma_delay_node_example.c
-120
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@@ -1,120 +0,0 @@
#include "../../../miniaudio.c"
#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 2
#define DEVICE_SAMPLE_RATE 48000
static ma_audio_buffer_ref g_dataSupply; /* The underlying data source of the source node. */
static ma_data_source_node g_dataSupplyNode; /* The node that will sit at the root level. Will be reading data from g_dataSupply. */
static ma_delay_node g_delayNode; /* The delay node. */
static ma_node_graph g_nodeGraph; /* The main node graph that we'll be feeding data through. */
void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount)
{
/*
This example assumes the playback and capture sides use the same format and channel count. The
format must be f32.
*/
if (pDevice->capture.format != DEVICE_FORMAT || pDevice->playback.format != DEVICE_FORMAT || pDevice->capture.channels != pDevice->playback.channels) {
return;
}
/*
The node graph system is a pulling style of API. At the lowest level of the chain will be a
node acting as a data source for the purpose of delivering the initial audio data. In our case,
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_dataSupply, 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);
}
int main(int argc, char** argv)
{
ma_result result;
ma_device_config deviceConfig;
ma_device device;
ma_node_graph_config nodeGraphConfig;
ma_delay_node_config delayNodeConfig;
ma_data_source_node_config dataSupplyNodeConfig;
deviceConfig = ma_device_config_init(ma_device_type_duplex);
deviceConfig.capture.pDeviceID = NULL;
deviceConfig.capture.format = DEVICE_FORMAT;
deviceConfig.capture.channels = DEVICE_CHANNELS;
deviceConfig.capture.shareMode = ma_share_mode_shared;
deviceConfig.playback.pDeviceID = NULL;
deviceConfig.playback.format = DEVICE_FORMAT;
deviceConfig.playback.channels = DEVICE_CHANNELS;
deviceConfig.dataCallback = data_callback;
result = ma_device_init(NULL, &deviceConfig, &device);
if (result != MA_SUCCESS) {
return result;
}
/* Node graph. */
nodeGraphConfig = ma_node_graph_config_init(device.capture.channels);
result = ma_node_graph_init(&nodeGraphConfig, NULL, &g_nodeGraph);
if (result != MA_SUCCESS) {
printf("Failed to initialize node graph.");
goto done0;
}
/* Delay. Attached straight to the endpoint. */
delayNodeConfig = ma_delay_node_config_init(device.capture.channels, device.sampleRate, (100 * device.sampleRate) / 1000, 0.5f);
result = ma_delay_node_init(&g_nodeGraph, &delayNodeConfig, NULL, &g_delayNode);
if (result != MA_SUCCESS) {
printf("Failed to initialize delay node.");
goto done1;
}
ma_node_attach_output_bus(&g_delayNode, 0, ma_node_graph_get_endpoint(&g_nodeGraph), 0);
/* Data supply. Attached to input bus 0 of the delay node. */
result = ma_audio_buffer_ref_init(device.capture.format, device.capture.channels, NULL, 0, &g_dataSupply);
if (result != MA_SUCCESS) {
printf("Failed to initialize audio buffer for source.");
goto done2;
}
dataSupplyNodeConfig = ma_data_source_node_config_init(&g_dataSupply);
result = ma_data_source_node_init(&g_nodeGraph, &dataSupplyNodeConfig, NULL, &g_dataSupplyNode);
if (result != MA_SUCCESS) {
printf("Failed to initialize source node.");
goto done2;
}
ma_node_attach_output_bus(&g_dataSupplyNode, 0, &g_delayNode, 0);
ma_device_start(&device);
printf("Press Enter to quit...\n");
getchar();
/* It's important that we stop the device first or else we'll uninitialize the graph from under the device. */
ma_device_stop(&device);
/*done3:*/ ma_data_source_node_uninit(&g_dataSupplyNode, NULL);
done2: ma_delay_node_uninit(&g_delayNode, NULL);
done1: ma_node_graph_uninit(&g_nodeGraph, NULL);
done0: ma_device_uninit(&device);
(void)argc;
(void)argv;
return 0;
}