actuellement en game jame j'aimerais savoir de quelle maniére je pouvais récuperer le son d'un microphone banché a l'ordinateur et obtenir l'intensité sonore ainsi que la fréqence actuelle.
Je comptais utiliser SDL avec OpenAudioDevice mais ... j'ai du mal a comprendre l'ensemble.
merci beaucoup je compte sur vous !
PS j'utilise actuellement ce bout de code mais je ne sais pas exactement quoi récuperer pour le traiter
#include <stdio.h>
#include <SANDAL2/SANDAL2.h>
#include <stdlib.h>
#ifdef __EMSCRIPTEN__
#include <emscripten/emscripten.h>
#endif
static SDL_Window *window = NULL;
static SDL_Renderer *renderer = NULL;
static SDL_AudioSpec spec;
static SDL_AudioSpec spec2;
static SDL_AudioDeviceID devid_in = 0;
static SDL_AudioDeviceID devid_out = 0;
static void
loop()
{
SDL_bool please_quit = SDL_FALSE;
SDL_Event e;
while (SDL_PollEvent(&e)) {
if (e.type == SDL_QUIT) {
please_quit = SDL_TRUE;
} else if (e.type == SDL_KEYDOWN) {
if (e.key.keysym.sym == SDLK_ESCAPE) {
please_quit = SDL_TRUE;
}
} else if (e.type == SDL_MOUSEBUTTONDOWN) {
if (e.button.button == 1) {
SDL_PauseAudioDevice(devid_out, 1);
SDL_PauseAudioDevice(devid_in, 0);
}
} else if (e.type == SDL_MOUSEBUTTONUP) {
if (e.button.button == 1) {
SDL_PauseAudioDevice(devid_in, 1);
SDL_PauseAudioDevice(devid_out, 0);
}
}
}
if (SDL_GetAudioDeviceStatus(devid_in) == SDL_AUDIO_PLAYING) {
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
} else {
SDL_SetRenderDrawColor(renderer, 222, 0, 100, 255);
}
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
if (please_quit) {
/* stop playing back, quit. */
SDL_Log("Shutting down.\n");
SDL_PauseAudioDevice(devid_in, 1);
SDL_CloseAudioDevice(devid_in);
SDL_PauseAudioDevice(devid_out, 1);
SDL_CloseAudioDevice(devid_out);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
#ifdef __EMSCRIPTEN__
emscripten_cancel_main_loop();
#endif
exit(0);
}
/*
while (SDL_TRUE) {
Uint8 buf[1024];
SDL_Log("queue size %d: ", SDL_GetQueuedAudioSize(devid_in));
const Uint32 br = SDL_DequeueAudio(devid_in, buf, sizeof (buf));
SDL_QueueAudio(devid_out, buf, br);
if (br < sizeof (buf)) {
break;
}
}
*/
}
static void _sdl_cb(void * userdata, unsigned char * pcm, int len){
if (SDL_GetAudioDeviceStatus(devid_in) == SDL_AUDIO_PLAYING) {
SDL_QueueAudio(devid_out, pcm, len);
}
}
int
main(int argc, char **argv)
{
/* (argv[1] == NULL means "open default device.") */
const char *devname = argv[1];
SDL_AudioSpec wanted;
int devcount;
int i;
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
/* Load the SDL library */
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return (1);
}
window = SDL_CreateWindow("testaudiocapture", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 320, 240, 0);
renderer = SDL_CreateRenderer(window, -1, 0);
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
devcount = SDL_GetNumAudioDevices(SDL_TRUE);
for (i = 0; i < devcount; i++) {
SDL_Log(" Capture device #%d: '%s'\n", i, SDL_GetAudioDeviceName(i, SDL_TRUE));
}
SDL_zero(wanted);
wanted.freq = 44100;
wanted.format = AUDIO_F32SYS;
wanted.channels = 1;
wanted.samples = 960;
wanted.callback = NULL;
SDL_zero(spec);
/* DirectSound can fail in some instances if you open the same hardware
for both capture and output and didn't open the output end first,
according to the docs, so if you're doing something like this, always
open your capture devices second in case you land in those bizarre
circumstances. */
SDL_Log("Opening default playback device...\n");
devid_out = SDL_OpenAudioDevice(NULL, SDL_FALSE, &wanted, &spec, SDL_AUDIO_ALLOW_ANY_CHANGE);
if (!devid_out) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open an audio device for playback: %s!\n", SDL_GetError());
SDL_Quit();
exit(1);
}
spec2 = spec;
spec2.callback = _sdl_cb;
SDL_Log("Opening capture device %s%s%s...\n",
devname ? "'" : "",
devname ? devname : "[[default]]",
devname ? "'" : "");
devid_in = SDL_OpenAudioDevice(argv[1], SDL_TRUE, &spec2, &spec2, 0);
if (!devid_in) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open an audio device for capture: %s!\n", SDL_GetError());
SDL_Quit();
exit(1);
}
SDL_Log("Ready! Hold down mouse or finger to record!\n");
#ifdef __EMSCRIPTEN__
emscripten_set_main_loop(loop, 0, 1);
#else
while (1) { loop(); SDL_Delay(16); }
#endif
return 0;
}
- Edité par Mechaick 4 mai 2019 à 16:35:06
Capture et traitement microphone [SDL2]
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