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main.c, Sample file showcasing issue

main.c (text/x-c), 1012 bytes, created by Gabriel Marcano on 2015-07-25 03:29:34 UTC

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Description:

Filename:

MIME Type:

Creator: Gabriel Marcano

Created: 2015-07-25 03:29:34 UTC

Size: 1012 bytes

patch

obsolete

>#include <SDL2/SDL.h>
>#include <unistd.h>
>#include <stdint.h>
>
>int16_t sound_buffer[2048];
>
>void generate_samples(size_t len)
>{
>	static size_t counter = 0;
>	size_t frequency = 1000;
>	size_t period_in_samples = 48000/frequency;
>
>	for (size_t i = 0; i < len; i+=2)
>	{
>		int16_t sign = counter < period_in_samples/2 ? 1 : -1;
>		sound_buffer[i] = sign * 28000;
>		sound_buffer[i+1] = sign * 28000;
>		if (++counter >= period_in_samples)
>		{
>			counter -= period_in_samples;
>		}
>	}
>}
>
>void fill_audio(void *udata, Uint8 *stream, int len)
>{
>	//generate_samples(len/2);
>	generate_samples(len);
>	memcpy(stream, &sound_buffer, len);
>}
>
>int main()
>{
>	SDL_AudioSpec wanted;
>	wanted.freq = 48000;
>	wanted.format = AUDIO_S16SYS;
>	wanted.channels = 1;
>	wanted.samples = 2048;
>	wanted.callback = fill_audio;
>
>	SDL_Init(SDL_INIT_AUDIO);
>	
>	int dev = SDL_OpenAudioDevice(NULL, 0, &wanted, NULL, 0);
>
>	SDL_PauseAudioDevice(dev, 0);
>	sleep(1);
>	SDL_PauseAudioDevice(dev, 1);
>	
>	SDL_CloseAudioDevice(dev);
>	SDL_Quit();
>
>	return 0;
>}
>

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Attachments on bug 3073: 2228

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.