SDL_dummyaudio.c File Reference

#include "../../SDL_internal.h"
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_dummyaudio.h"

Include dependency graph for SDL_dummyaudio.c:

Go to the source code of this file.

Functions
static int	DUMMYAUDIO_OpenDevice (_THIS, void *handle, const char *devname, int iscapture)
static int	DUMMYAUDIO_CaptureFromDevice (_THIS, void *buffer, int buflen)
static int	DUMMYAUDIO_Init (SDL_AudioDriverImpl *impl)

Variables
AudioBootStrap	DUMMYAUDIO_bootstrap

Function Documentation

static int DUMMYAUDIO_CaptureFromDevice ( _THIS  , void *  buffer, int  buflen  )

static

Definition at line 37 of file SDL_dummyaudio.c.

References SDL_AudioSpec::samples, SDL_Delay, SDL_memset, SDL_AudioSpec::silence, and spec.

Referenced by DUMMYAUDIO_Init().

{
    /* Delay to make this sort of simulate real audio input. */
    SDL_Delay((this->spec.samples * 1000) / this->spec.freq);

    /* always return a full buffer of silence. */
    SDL_memset(buffer, this->spec.silence, buflen);
    return buflen;
}

static int DUMMYAUDIO_Init ( SDL_AudioDriverImpl *  impl )

static

Definition at line 48 of file SDL_dummyaudio.c.

References SDL_AudioDriverImpl::CaptureFromDevice, DUMMYAUDIO_CaptureFromDevice(), DUMMYAUDIO_OpenDevice(), SDL_AudioDriverImpl::HasCaptureSupport, SDL_AudioDriverImpl::OnlyHasDefaultCaptureDevice, SDL_AudioDriverImpl::OnlyHasDefaultOutputDevice, SDL_AudioDriverImpl::OpenDevice, and SDL_TRUE.

{
    /* Set the function pointers */
    impl->OpenDevice = DUMMYAUDIO_OpenDevice;
    impl->CaptureFromDevice = DUMMYAUDIO_CaptureFromDevice;

    impl->OnlyHasDefaultOutputDevice = 1;
    impl->OnlyHasDefaultCaptureDevice = 1;
    impl->HasCaptureSupport = SDL_TRUE;

    return 1;   /* this audio target is available. */
}

static int DUMMYAUDIO_OpenDevice ( _THIS  , void *  handle, const char *  devname, int  iscapture  )

static

Definition at line 31 of file SDL_dummyaudio.c.

Referenced by DUMMYAUDIO_Init().

{
    return 0;                   /* always succeeds. */
}

Variable Documentation

AudioBootStrap DUMMYAUDIO_bootstrap

Initial value:

 {
    "dummy", "SDL dummy audio driver", DUMMYAUDIO_Init, 1
}

Definition at line 61 of file SDL_dummyaudio.c.