/* $Id: sound.c,v 1.1 2003/05/26 20:35:43 stpohle Exp $ */
/* sound */

#include "sound.h"

_snd snd;

/* play an soundsample SND_* */
void
snd_play (int samplenr)
{
#if HAVE_SDL_MIXER
    if (samplenr < SND_max && snd.inited && snd.sample[samplenr] != NULL)
        Mix_PlayChannel (-1, snd.sample[samplenr], 0);
#endif
};


/* start playing music */
void
snd_music_start ()
{
#if HAVE_SDL_MIXER
    if (snd.inited && snd.music != NULL)
        Mix_PlayMusic (snd.music, -1);
#endif
};

/* stop playing music */
void
snd_music_stop ()
{
#if HAVE_SDL_MIXER
    if (snd.inited)
        Mix_HaltMusic ();
#endif
};

/* init audio, sdl_mixer */
void
snd_init ()
{
#if HAVE_SDL_MIXER
    int audio_rate = 22050;
    Uint16 audio_format = AUDIO_S16;
    int audio_channels = 2;

    if (Mix_OpenAudio (audio_rate, audio_format, audio_channels, 1024) < 0) {
        d_printf ("Couldn't open audio mixer: %s\n", SDL_GetError ());
        snd.inited = 0;
        return;
    }

    Mix_QuerySpec (&audio_rate, &audio_format, &audio_channels);
    d_printf ("Opened audio at %d Hz %d bit %s\n",
              audio_rate, (audio_format & 0xFF), (audio_channels > 1 ? "stereo" : "mono"));

    Mix_Volume (-1, 96);
    Mix_VolumeMusic (48);

    snd.inited = 1;
#endif
    return;
};


/* load the audio files */
void
snd_load (char *tilesetname)
{
#if HAVE_SDL_MIXER
    char fullname[LEN_PATHFILENAME];
    char filename[LEN_FILENAME];

    int i;

    // load samples
    d_printf ("Loading Audioset\n");

    for (i = 0; i < SND_max; i++) {
        switch (i) {
        case (SND_dead):
            sprintf (filename, "dead.wav");
            break;
        case (SND_explode):
            sprintf (filename, "explode.wav");
            break;
        default:
            sprintf (filename, "drop.wav");
            break;
        }

        /* try loading the sample from the tileset or the default */
        sprintf (fullname, "%s/tileset/%s/%s", bman.datapath, tilesetname, filename);
        if ((snd.sample[i] = Mix_LoadWAV (fullname)) == NULL) {
            sprintf (fullname, "%s/tileset/default/%s", bman.datapath, filename);
            if ((snd.sample[i] = Mix_LoadWAV (fullname)) == NULL)
                d_printf ("Couldn't load %s: %s\n", fullname, SDL_GetError ());
        }
    }

    /* try loading the music from the tileset or the default */
    sprintf (fullname, "%s/tileset/%s/music.ogg", bman.datapath, tilesetname);
    if ((snd.music = Mix_LoadMUS (fullname)) == NULL) {
        sprintf (fullname, "%s/tileset/default/music.ogg", bman.datapath);
        if ((snd.music = Mix_LoadMUS (fullname)) == NULL)
            d_printf ("Couldn't load %s: %s\n", fullname, SDL_GetError ());
    }

#endif
    return;
};


void
snd_free ()
{
#if HAVE_SDL_MIXER
    int i;

    for (i = 0; i < SND_max; i++)
        if (snd.sample[i] != NULL)
            Mix_FreeChunk (snd.sample[i]);

    if (snd.music != NULL)
        Mix_FreeMusic (snd.music);
#endif
};