static SDL_AudioDevice *Audio_CreateDevice(int devindex) { SDL_AudioDevice *this; /* Initialize all variables that we clean on shutdown */ LoadESDLibrary(); this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice)); if ( this ) { memset(this, 0, (sizeof *this)); this->hidden = (struct SDL_PrivateAudioData *) malloc((sizeof *this->hidden)); } if ( (this == NULL) || (this->hidden == NULL) ) { SDL_OutOfMemory(); if ( this ) { free(this); } return(0); } memset(this->hidden, 0, (sizeof *this->hidden)); audio_fd = -1; /* Set the function pointers */ this->OpenAudio = ESD_OpenAudio; this->WaitAudio = ESD_WaitAudio; this->PlayAudio = ESD_PlayAudio; this->GetAudioBuf = ESD_GetAudioBuf; this->CloseAudio = ESD_CloseAudio; this->free = Audio_DeleteDevice; return this; }
static int ESD_Init(SDL_AudioDriverImpl * impl) { if (LoadESDLibrary() < 0) { return 0; } else { int connection = 0; /* Don't start ESD if it's not running */ SDL_setenv("ESD_NO_SPAWN", "1", 0); connection = SDL_NAME(esd_open_sound) (NULL); if (connection < 0) { UnloadESDLibrary(); SDL_SetError("ESD: esd_open_sound failed (no audio server?)"); return 0; } SDL_NAME(esd_close) (connection); } /* Set the function pointers */ impl->OpenDevice = ESD_OpenDevice; impl->PlayDevice = ESD_PlayDevice; impl->WaitDevice = ESD_WaitDevice; impl->GetDeviceBuf = ESD_GetDeviceBuf; impl->CloseDevice = ESD_CloseDevice; impl->Deinitialize = ESD_Deinitialize; impl->OnlyHasDefaultOutputDevice = 1; return 1; /* this audio target is available. */ }
static int Audio_Available(void) { int connection; int available; available = 0; if ( LoadESDLibrary() < 0 ) { return available; } connection = SDL_NAME(esd_open_sound)(NULL); if ( connection >= 0 ) { available = 1; SDL_NAME(esd_close)(connection); } UnloadESDLibrary(); return(available); }