mirror of https://github.com/mackron/miniaudio.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/*
|
|
Demonstrates duplex mode which is where data is captured from a microphone and then output to a speaker device.
|
|
|
|
This example captures audio from the default microphone and then outputs it straight to the default playback device
|
|
without any kind of modification. If you wanted to, you could also apply filters and effects to the input stream
|
|
before outputting to the playback device.
|
|
|
|
Note that the microphone and playback device must run in lockstep. Any kind of timing deviation will result in audible
|
|
glitching which the backend may not be able to recover from. For this reason, miniaudio forces you to use the same
|
|
sample rate for both capture and playback. If internally the native sample rates differ, miniaudio will perform the
|
|
sample rate conversion for you automatically.
|
|
*/
|
|
#define MINIAUDIO_IMPLEMENTATION
|
|
#include "../miniaudio.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
#ifdef __EMSCRIPTEN__
|
|
void main_loop__em()
|
|
{
|
|
}
|
|
#endif
|
|
|
|
void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount)
|
|
{
|
|
MA_ASSERT(pDevice->capture.format == pDevice->playback.format);
|
|
MA_ASSERT(pDevice->capture.channels == pDevice->playback.channels);
|
|
|
|
/* In this example the format and channel count are the same for both input and output which means we can just memcpy(). */
|
|
MA_COPY_MEMORY(pOutput, pInput, frameCount * ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels));
|
|
}
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
ma_result result;
|
|
ma_device_config deviceConfig;
|
|
ma_device device;
|
|
|
|
deviceConfig = ma_device_config_init(ma_device_type_duplex);
|
|
deviceConfig.capture.pDeviceID = NULL;
|
|
deviceConfig.capture.format = ma_format_s16;
|
|
deviceConfig.capture.channels = 2;
|
|
deviceConfig.capture.shareMode = ma_share_mode_shared;
|
|
deviceConfig.playback.pDeviceID = NULL;
|
|
deviceConfig.playback.format = ma_format_s16;
|
|
deviceConfig.playback.channels = 2;
|
|
deviceConfig.dataCallback = data_callback;
|
|
result = ma_device_init(NULL, &deviceConfig, &device);
|
|
if (result != MA_SUCCESS) {
|
|
return result;
|
|
}
|
|
|
|
#ifdef __EMSCRIPTEN__
|
|
getchar();
|
|
#endif
|
|
|
|
ma_device_start(&device);
|
|
|
|
#ifdef __EMSCRIPTEN__
|
|
emscripten_set_main_loop(main_loop__em, 0, 1);
|
|
#else
|
|
printf("Press Enter to quit...\n");
|
|
getchar();
|
|
#endif
|
|
|
|
ma_device_uninit(&device);
|
|
|
|
(void)argc;
|
|
(void)argv;
|
|
return 0;
|
|
}
|