// Initialize music subsystem
dboolean I_InitMusic(void)
{
// If SDL_mixer is not initialized, we have to initialize it
// and have the responsibility to shut it down later on.
if (!SDLIsInitialized())
if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0)
I_Error("Unable to set up sound: %s", SDL_GetError());
else if (Mix_OpenAudio(snd_samplerate, MIX_DEFAULT_FORMAT, CHANNELS,
SAMPLECOUNT * snd_samplerate / 11025) < 0)
{
SDL_QuitSubSystem(SDL_INIT_AUDIO);
I_Error("Error initializing SDL2_mixer: %s", Mix_GetError());
}
SDL_PauseAudio(0);
tempmusicfilename = M_TempFile(PACKAGE".mid");
sdl_was_initialized = true;
music_initialized = true;
// Once initialization is complete, the temporary Timidity config
// file can be removed.
RemoveTimidityConfig();
return music_initialized;
}
// Initialize music subsystem
static boolean I_SDL_InitMusic(void)
{
// If SDL_mixer is not initialized, we have to initialize it
// and have the responsibility to shut it down later on.
if (SDLIsInitialized())
{
music_initialized = true;
}
else
{
if (SDL_Init(SDL_INIT_AUDIO) < 0)
{
fprintf(stderr, "Unable to set up sound.\n");
}
else if (Mix_OpenAudio(snd_samplerate, AUDIO_S16SYS, 2, 1024) < 0)
{
fprintf(stderr, "Error initializing SDL_mixer: %s\n",
Mix_GetError());
SDL_QuitSubSystem(SDL_INIT_AUDIO);
}
else
{
SDL_PauseAudio(0);
sdl_was_initialized = true;
music_initialized = true;
}
}
#if defined(SDL_MIXER_VERSION_ATLEAST)
#if SDL_MIXER_VERSION_ATLEAST(2,0,2)
// Initialize SDL_Mixer for MIDI music playback
Mix_Init(MIX_INIT_MID | MIX_INIT_FLAC | MIX_INIT_OGG | MIX_INIT_MP3); // [crispy] initialize some more audio formats
#endif
#endif
// Once initialization is complete, the temporary Timidity config
// file can be removed.
RemoveTimidityConfig();
// If snd_musiccmd is set, we need to call Mix_SetMusicCMD to
// configure an external music playback program.
if (strlen(snd_musiccmd) > 0)
{
Mix_SetMusicCMD(snd_musiccmd);
}
#if defined(_WIN32)
// [AM] Start up midiproc to handle playing MIDI music.
I_MidiPipe_InitServer();
#endif
return music_initialized;
}
static int OPL_SDL_Init(unsigned int port_base)
{
// Check if SDL_mixer has been opened already
// If not, we must initialize it now
if (!SDLIsInitialized())
{
if (SDL_Init(SDL_INIT_AUDIO) < 0)
{
fprintf(stderr, "Unable to set up sound.\n");
return 0;
}
if (Mix_OpenAudio(opl_sample_rate, AUDIO_S16SYS, 2, GetSliceSize()) < 0)
{
fprintf(stderr, "Error initialising SDL_mixer: %s\n", Mix_GetError());
SDL_QuitSubSystem(SDL_INIT_AUDIO);
return 0;
}
SDL_PauseAudio(0);
// When this module shuts down, it has the responsibility to
// shut down SDL.
sdl_was_initialized = 1;
}
else
{
sdl_was_initialized = 0;
}
opl_sdl_paused = 0;
pause_offset = 0;
// Queue structure of callbacks to invoke.
callback_queue = OPL_Queue_Create();
current_time = 0;
// Get the mixer frequency, format and number of channels.
Mix_QuerySpec(&mixing_freq, &mixing_format, &mixing_channels);
// Only supports AUDIO_S16SYS
if (mixing_format != AUDIO_S16SYS || mixing_channels != 2)
{
fprintf(stderr,
"OPL_SDL only supports native signed 16-bit LSB, "
"stereo format!\n");
OPL_SDL_Shutdown();
return 0;
}
// Mix buffer:
mix_buffer = malloc(mixing_freq * sizeof(uint32_t));
// Create the emulator structure:
DBOPL_InitTables();
Chip__Chip(&opl_chip);
Chip__Setup(&opl_chip, mixing_freq);
callback_mutex = SDL_CreateMutex();
callback_queue_mutex = SDL_CreateMutex();
// TODO: This should be music callback? or-?
Mix_HookMusic(OPL_Mix_Callback, NULL);
return 1;
}
