void S_CheckLerpingState( void )
{
wavdata_t *info;
s_listener.lerping = false;
if( !s_bgTrack.stream ) return;
info = FS_StreamInfo( s_bgTrack.stream );
if( info && ((float)info->rate / SOUND_DMA_SPEED ) >= 1.0f )
s_listener.lerping = s_lerping->integer;
}
/*
=================
S_StreamBackgroundTrack
=================
*/
void S_StreamBackgroundTrack( void )
{
int bufferSamples;
int fileSamples;
byte raw[MAX_RAW_SAMPLES];
int r, fileBytes;
float musicVolume = 0.5f;
if( !s_bgTrack.stream ) return;
// graeme see if this is OK
musicVolume = ( musicVolume + ( s_musicvolume->value * 2 )) / 4.0f;
// don't bother playing anything if musicvolume is 0
if( musicVolume <= 0 ) 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 * info->rate / dma.speed;
// 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
// FIXME: apply musicVolume
S_StreamRawSamples( fileSamples, info->rate, info->width, info->channels, raw );
}
else
{
// loop
if( s_bgTrack.loopName[0] )
{
FS_CloseStream( s_bgTrack.stream );
s_bgTrack.stream = NULL;
S_StartBackgroundTrack( s_bgTrack.loopName, s_bgTrack.loopName );
if( !s_bgTrack.stream ) return;
}
else
{
S_StopBackgroundTrack();
return;
}
}
}
}
/*
=================
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;
}
}
}
}