/*
=================
S_StartBackgroundTrack
=================
*/
void S_StartBackgroundTrack( const char *introTrack, const char *mainTrack, int position )
{
S_StopBackgroundTrack();
if( !dma.initialized ) return;
// check for special symbols
if( introTrack && *introTrack == '*' )
introTrack = NULL;
if( mainTrack && *mainTrack == '*' )
mainTrack = NULL;
if(( !introTrack || !*introTrack ) && ( !mainTrack || !*mainTrack ))
return;
if( !introTrack ) introTrack = mainTrack;
if( !*introTrack ) return;
if( !mainTrack || !*mainTrack ) s_bgTrack.loopName[0] = '\0';
else Q_strncpy( s_bgTrack.loopName, mainTrack, sizeof( s_bgTrack.loopName ));
// open stream
s_bgTrack.stream = FS_OpenStream( va( "media/%s", introTrack ));
Q_strncpy( s_bgTrack.current, introTrack, sizeof( s_bgTrack.current ));
Q_memset( &musicfade, 0, sizeof( musicfade )); // clear any soundfade
s_bgTrack.source = cls.key_dest;
if( position != 0 )
{
// restore message, update song position
FS_SetStreamPos( s_bgTrack.stream, position );
}
S_CheckLerpingState();
}
/*
=================
S_StartBackgroundTrack
=================
*/
void S_StartBackgroundTrack( const char *introTrack, const char *mainTrack )
{
S_StopBackgroundTrack();
if(( !introTrack || !*introTrack ) && ( !mainTrack || !*mainTrack ))
return;
if( !introTrack )
{
introTrack = "";
}
if( !mainTrack || !*mainTrack )
{
mainTrack = introTrack;
}
if( !*introTrack ) return;
if( mainTrack )
{
com.snprintf( s_bgTrack.loopName, sizeof( s_bgTrack.loopName ), "media/%s", mainTrack );
}
else s_bgTrack.loopName[0] = 0;
S_StartStreaming();
// close the background track, but DON'T reset s_rawend
// if restarting the same back ground track
if( s_bgTrack.stream )
{
FS_CloseStream( s_bgTrack.stream );
s_bgTrack.stream = NULL;
}
// open stream
s_bgTrack.stream = FS_OpenStream( va( "media/%s", introTrack ));
}
/*
=================
S_StreamBackgroundTrack
=================
*/
void S_StreamBackgroundTrack( void )
{
int bufferSamples;
int fileSamples;
byte raw[MAX_RAW_SAMPLES];
int r, fileBytes;
if( !dma.initialized ) return;
if( !s_bgTrack.stream ) return;
if( s_listener.streaming ) return; // we are playing movie or somewhat
// don't bother playing anything if musicvolume is 0
if( !s_musicvolume->value || s_listener.paused || s_listener.stream_paused )
return;
if( !cl.background )
{
// pause music by source type
if( s_bgTrack.source == key_game && cls.key_dest == key_menu ) return;
if( s_bgTrack.source == key_menu && cls.key_dest != key_menu ) return;
}
else if( cls.key_dest == key_console )
return;
// see how many samples should be copied into the raw buffer
if( s_rawend < soundtime )
s_rawend = soundtime;
while( s_rawend < soundtime + MAX_RAW_SAMPLES )
{
wavdata_t *info = FS_StreamInfo( s_bgTrack.stream );
bufferSamples = MAX_RAW_SAMPLES - (s_rawend - soundtime);
// decide how much data needs to be read from the file
fileSamples = bufferSamples * ((float)info->rate / SOUND_DMA_SPEED );
if( fileSamples <= 1 ) return; // no more samples need
// our max buffer size
fileBytes = fileSamples * ( info->width * info->channels );
if( fileBytes > sizeof( raw ))
{
fileBytes = sizeof( raw );
fileSamples = fileBytes / ( info->width * info->channels );
}
// read
r = FS_ReadStream( s_bgTrack.stream, fileBytes, raw );
if( r < fileBytes )
{
fileBytes = r;
fileSamples = r / ( info->width * info->channels );
}
if( r > 0 )
{
// add to raw buffer
S_StreamRawSamples( fileSamples, info->rate, info->width, info->channels, raw );
}
else
{
// loop
if( s_bgTrack.loopName[0] )
{
FS_FreeStream( s_bgTrack.stream );
s_bgTrack.stream = FS_OpenStream( va( "media/%s", s_bgTrack.loopName ));
Q_strncpy( s_bgTrack.current, s_bgTrack.loopName, sizeof( s_bgTrack.current ));
if( !s_bgTrack.stream ) return;
S_CheckLerpingState();
}
else
{
S_StopBackgroundTrack();
return;
}
}
}
}
