Пример #1
0
/* Free a music chunk previously loaded */
void Mix_FreeMusic(Mix_Music *music)
{
	if ( music ) {
		/* Stop the music if it's currently playing */
		SDL_LockAudio();
		if ( music == music_playing ) {
			/* Wait for any fade out to finish */
			while ( music->fading == MIX_FADING_OUT ) {
				SDL_UnlockAudio();
				SDL_Delay(100);
				SDL_LockAudio();
			}
			if ( music == music_playing ) {
				music_internal_halt();
			}
		}
		SDL_UnlockAudio();
		switch (music->type) {
#ifdef CMD_MUSIC
			case MUS_CMD:
				MusicCMD_FreeSong(music->data.cmd);
				break;
#endif
#ifdef WAV_MUSIC
			case MUS_WAV:
				WAVStream_FreeSong(music->data.wave);
				break;
#endif
#ifdef MODPLUG_MUSIC
			case MUS_MODPLUG:
				modplug_delete(music->data.modplug);
				break;
#endif
#ifdef MOD_MUSIC
			case MUS_MOD:
				MOD_delete(music->data.module);
				break;
#endif
#ifdef MID_MUSIC
			case MUS_MID:
#ifdef USE_NATIVE_MIDI
  				if ( native_midi_ok ) {
					native_midi_freesong(music->data.nativemidi);
					goto skip;
				}
#endif
#ifdef USE_FLUIDSYNTH_MIDI
				if ( fluidsynth_ok ) {
					fluidsynth_freesong(music->data.fluidsynthmidi);
					goto skip;
				}
#endif
#ifdef USE_TIMIDITY_MIDI
				if ( timidity_ok ) {
					Timidity_FreeSong(music->data.midi);
					goto skip;
				}
#endif
				break;
#endif
#ifdef OGG_MUSIC
			case MUS_OGG:
				OGG_delete(music->data.ogg);
				break;
#endif
#ifdef FLAC_MUSIC
			case MUS_FLAC:
				FLAC_delete(music->data.flac);
				break;
#endif
#ifdef MP3_MUSIC
			case MUS_MP3:
				smpeg.SMPEG_delete(music->data.mp3);
				break;
#endif
#ifdef MP3_MAD_MUSIC
			case MUS_MP3_MAD:
				mad_closeFile(music->data.mp3_mad);
				break;
#endif
			default:
				/* Unknown music type?? */
				break;
		}

    skip:
		SDL_free(music);
	}
}
Пример #2
0
SDL_AudioSpec *Mix_LoadMP3_RW(SDL_RWops *src, int freesrc, SDL_AudioSpec *spec, Uint8 **audio_buf, Uint32 *audio_len)
{
	/* note: spec is initialized to mixer spec */

#if defined(MP3_MUSIC)
	SMPEG* mp3 = 0;
	SMPEG_Info info;
#elif defined(MP3_MAD_MUSIC)
	mad_data *mp3_mad;
#endif
	long samplesize;
	int read_len;
	const Uint32 chunk_len = 4096;
	int err = 0;

	if ((!src) || (!spec) || (!audio_buf) || (!audio_len))
	{
		return NULL;
	}

	if (!err)
	{
		*audio_len = 0;
		*audio_buf = (Uint8*) SDL_malloc(chunk_len);
		err = (*audio_buf == NULL);
	}

	if (!err)
	{
		err = ((Mix_Init(MIX_INIT_MP3) & MIX_INIT_MP3) == 0);
	}

	if (!err)
	{
#if defined(MP3_MUSIC)
		mp3 = smpeg.SMPEG_new_rwops(src, &info, freesrc, 0);
		err = (mp3 == NULL);
#elif defined(MP3_MAD_MUSIC)
        mp3_mad = mad_openFileRW(src, spec, freesrc);
		err = (mp3_mad == NULL);
#endif
	}

#if defined(MP3_MUSIC)
	if (!err)
	{
		err = !info.has_audio;
	}
#endif

	if (!err)
	{
#if defined(MP3_MUSIC)

		smpeg.SMPEG_actualSpec(mp3, spec);

		smpeg.SMPEG_enableaudio(mp3, 1);
		smpeg.SMPEG_enablevideo(mp3, 0);

		smpeg.SMPEG_play(mp3);

		/* read once for audio length */
		while ((read_len = smpeg.SMPEG_playAudio(mp3, *audio_buf, chunk_len)) > 0)
		{
			*audio_len += read_len;
		}

		smpeg.SMPEG_stop(mp3);

#elif defined(MP3_MAD_MUSIC)

        mad_start(mp3_mad);

		/* read once for audio length */
		while ((read_len = mad_getSamples(mp3_mad, *audio_buf, chunk_len)) > 0)
		{
			*audio_len += read_len;
		}

		mad_stop(mp3_mad);

#endif

		err = (read_len < 0);
	}

	if (!err)
	{
		/* reallocate, if needed */
		if ((*audio_len > 0) && (*audio_len != chunk_len))
		{
			*audio_buf = (Uint8*) SDL_realloc(*audio_buf, *audio_len);
			err = (*audio_buf == NULL);
		}
	}

	if (!err)
	{
		/* read again for audio buffer, if needed */
		if (*audio_len > chunk_len)
		{
#if defined(MP3_MUSIC)
			smpeg.SMPEG_rewind(mp3);
			smpeg.SMPEG_play(mp3);
			err = (*audio_len != smpeg.SMPEG_playAudio(mp3, *audio_buf, *audio_len));
			smpeg.SMPEG_stop(mp3);
#elif defined(MP3_MAD_MUSIC)
			mad_seek(mp3_mad, 0);
			mad_start(mp3_mad);
			err = (*audio_len != mad_getSamples(mp3_mad, *audio_buf, *audio_len));
			mad_stop(mp3_mad);
#endif
		}
	}

	if (!err)
	{
		/* Don't return a buffer that isn't a multiple of samplesize */
		samplesize = ((spec->format & 0xFF)/8)*spec->channels;
		*audio_len &= ~(samplesize-1);
	}

#if defined(MP3_MUSIC)
	if (mp3)
	{
		smpeg.SMPEG_delete(mp3); mp3 = NULL;
		/* Deleting the MP3 closed the source if desired */
		freesrc = SDL_FALSE;
	}
#elif defined(MP3_MAD_MUSIC)
	if (mp3_mad)
	{
		mad_closeFile(mp3_mad); mp3_mad = NULL;
		/* Deleting the MP3 closed the source if desired */
		freesrc = SDL_FALSE;
	}
#endif

	if (freesrc)
	{
		SDL_RWclose(src); src = NULL;
	}

	/* handle error */
	if (err)
	{
		if (*audio_buf != NULL)
		{
			SDL_free(*audio_buf); *audio_buf = NULL;
		}
		*audio_len = 0;
		spec = NULL;
	}

	return spec;
}