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Test program showing the bug

sdltest.cpp (text/x-csrc), 1.85 KB, created by Giovanni Bajo on 2018-05-19 09:03:46 UTC

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Description:

Filename:

MIME Type:

Creator: Giovanni Bajo

Created: 2018-05-19 09:03:46 UTC

Size: 1.85 KB

patch

obsolete

>#include "SDL2/SDL.h" 
>#include <stdio.h>
>
>char buf[4096];
>
>int main( int argc, char* args[] ) 
>{ 
>  SDL_Window     *window;
>
>  SDL_version compiled;
>  SDL_version linked;
>
>  SDL_VERSION(&compiled);
>  SDL_GetVersion(&linked);
>  printf("We compiled against SDL version %d.%d.%d ...\n",
>       compiled.major, compiled.minor, compiled.patch);
>  printf("But we are linking against SDL version %d.%d.%d.\n",
>       linked.major, linked.minor, linked.patch);
>
>  SDL_Init(SDL_INIT_AUDIO);
>  /*
>    int n = SDL_GetNumAudioDrivers();
>    if (n == 0) {
>        SDL_Log("No built-in audio drivers\n\n");
>    } else {
>        int i;
>        SDL_Log("Built-in audio drivers:\n");
>        for (i = 0; i < n; ++i) {
>            SDL_Log("  %d: %s\n", i, SDL_GetAudioDriver(i));
>        }
>        SDL_Log("Select a driver with the SDL_AUDIODRIVER environment variable.\n");
>    }
>  */
>  SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
>
>  SDL_AudioSpec want;
>  SDL_zero(want);
>  want.freq = 44100;
>  want.format = AUDIO_S16;
>  want.channels = 2;
>  want.samples = 2048;
>
>  SDL_AudioDeviceID deviceId = SDL_OpenAudioDevice(NULL, 0, &want, NULL, SDL_AUDIO_ALLOW_FORMAT_CHANGE);
>  if (deviceId == 0) {
>    SDL_Log("Failed to open audio: %s", SDL_GetError());
>  }
>  SDL_PauseAudioDevice(deviceId, 0);
>
>  Uint32 base = SDL_GetQueuedAudioSize(deviceId);
>  for (int i=0;i<16;i++) {  	
>    printf("Initial buffer: %d\n", base);
>    SDL_Delay(1);
>  }
>
>  // Queue some audio
>  for (int i=0;i<128;i++) {  	
>  	SDL_QueueAudio(deviceId, buf, 512);
>  }
>
>  for (int i=0;i<16;i++) {  	
>  	Uint32 size = SDL_GetQueuedAudioSize(deviceId);
> 	printf("%d\n", size);
> 	SDL_Delay(20);
>  }
>
>  for (int i=0;i<16;i++) {  	
>  	Uint32 size = SDL_GetQueuedAudioSize(deviceId);
> 	printf("%d\n", size);
> 	SDL_Delay(1);
>  }
>
>  SDL_Quit(); 
>
>  return 0;   
>}

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Attachments on bug 4171: 3247 | 3292 | 3293

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.