void digi_set_max_channels(int n)
{
OSErr err;
song_resource *song;
digi_max_channels = n;
if ( digi_max_channels < 1 )
digi_max_channels = 1;
if ( digi_max_channels > MAX_SOUND_CHANNELS )
digi_max_channels = MAX_SOUND_CHANNELS;
if ( !digi_initialized ) return;
if (digi_midi_song_playing)
digi_stop_current_song();
if (midi_volume <= 0)
ChangeSystemVoices(0, digi_max_channels/2, digi_max_channels);
else
ChangeSystemVoices(MAX_MUSIC_CHANNELS, 4 + (digi_max_channels/2), digi_max_channels);
if (digi_last_midi_song != 0)
digi_play_midi_song(digi_last_midi_song, digi_last_midi_song_loop);
digi_reset_digi_sounds();
}
void digi_set_midi_volume(int n)
{
int old_volume = midi_volume;
if (!digi_initialized) return;
if (n < 0)
midi_volume = 0;
else if (n > 255)
midi_volume = 255;
else
midi_volume = n;
#ifdef MAC_SHAREWARE
SetSongVolume(midi_volume);
#else
redbook_set_volume(midi_volume);
#endif
if (!old_volume && midi_volume) {
#ifdef MAC_SHAREWARE
ChangeSystemVoices(MAX_MUSIC_CHANNELS, 4 + (digi_max_channels/2), digi_max_channels);
#endif
digi_play_midi_song(digi_last_midi_song, digi_last_midi_song_loop);
} else if (old_volume && !midi_volume) {
digi_stop_current_song();
#ifndef MAC_SHAREWARE
digi_cd_started = 0;
#else
ChangeSystemVoices(0, digi_max_channels/2, digi_max_channels);
#endif
}
}
/* Shut down audio */
void digi_close()
{
if (!Digi_initialized) return;
digi_stop_current_song();
Digi_initialized = 0;
#ifdef __MINGW32__
SDL_Delay(500); // CloseAudio hangs if it's called too soon after opening?
#endif
Mix_CloseAudio();
}
void digi_play_midi_song(int songnum, int loop )
{
OSErr err;
song_resource *song;
ushort midi_id;
if (!digi_initialized) return;
digi_last_midi_song = songnum;
digi_last_midi_song_loop = loop;
#ifndef MAC_SHAREWARE
if ( !have_descent_cd ) {
if ( !cd_playing && !digi_cd_started )
redbook_start_play();
digi_cd_started = 1;
return;
}
#endif
digi_stop_current_song();
if (midi_volume < 1)
return;
#ifdef MAC_SHAREWARE
Song_handle = GetResource('SONG', songnum);
if (!Song_handle)
return;
song = (song_resource *)(*Song_handle);
midi_id = song->midi_id;
Midi_handle = GetResource('Midi', midi_id);
if (!Midi_handle) {
ReleaseResource(Song_handle);
return;
}
song->sound_voices = digi_max_channels;
song->norm_voices = 4 + (digi_max_channels/2);
err = BeginSongFromMemory(songnum, Song_handle, Midi_handle, loop);
if (err != noErr)
return;
#else
play_redbook_track(songnum, loop);
#endif
digi_midi_song_playing = 1;
}
void digi_play_midi_song( char * filename, char * melodic_bank, char * drum_bank, int loop )
{
if (!digi_initialised) return;
digi_stop_current_song();
//added on 5/20/99 by Victor Rachels to fix crash/etc
if(filename == NULL) return;
if(midi_volume < 1) return;
//end this section addition - VR
if ((hmp = hmp_open(filename))) {
hmp_play(hmp);
digi_midi_song_playing = 1;
digi_set_midi_volume(midi_volume);
}
else
printf("hmp_open failed\n");
}
void digi_audio_play_midi_song( char * filename, char * melodic_bank, char * drum_bank, int loop )
{
#ifdef _WIN32
if (GameArg.SndNoMusic)
return;
digi_stop_current_song();
if (filename == NULL)
return;
if ((hmp = hmp_open(filename)))
{
hmp_play(hmp,loop);
digi_midi_song_playing = 1;
digi_set_midi_volume(midi_volume);
}
#endif
}
void digi_close()
{
int i, sound_num;
if (!digi_initialized)
return;
digi_stop_current_song();
SetMasterVolume(master_save);
// free the sounds that we have registered.
for (i = 0; i < num_sounds; i++) {
sound_num = digi_xlat_sound(i);
if (sound_num != -1)
FreeSound(i);
}
ReleaseRegisteredSounds();
FinisSoundMusicSystem();
digi_initialized = 0;
}
//stop any songs - midi or redbook - that are currently playing
void songs_stop_all(void)
{
digi_stop_current_song(); // Stop midi song, if playing
songs_stop_redbook(); // Stop CD, if playing
}
