/*
======================
S_StartBackgroundTrack
======================
*/
void S_Base_StartBackgroundTrack( const char *intro, const char *loop, float volume, float loopVolume ) {
if ( !intro ) {
intro = "";
}
if ( !loop || !loop[0] ) {
loop = intro;
}
Com_DPrintf( "S_StartBackgroundTrack( %s, %s, %f, %f )\n", intro, loop, volume, loopVolume );
if(!*intro)
{
S_Base_StopBackgroundTrack();
return;
}
s_backgroundVolume = Com_Clamp(0, 10, volume);
s_backgroundLoopVolume = Com_Clamp(0, 10, loopVolume);
if( !loop ) {
s_backgroundLoop[0] = 0;
} else {
Q_strncpyz( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
}
S_OpenBackgroundStream( intro );
}
/*
======================
S_Base_StartBackgroundTrack
======================
*/
static void S_Base_StartBackgroundTrack( const char *intro, const char *loop ){
if ( !intro ) {
intro = "";
}
if ( !loop || !loop[0] ) {
loop = intro;
}
//Com_DPrintf( "S_StartBackgroundTrack( %s, %s )\n", intro, loop );
//Com_Printf( "S_StartBackgroundTrack( %s, %s )\n", intro, loop );
if(!*intro)
{
S_Base_StopBackgroundTrack();
return;
}
Q_strncpyz( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
S_OpenBackgroundStream( intro );
}
/*
======================
S_StartBackgroundTrack
======================
*/
void S_Base_StartBackgroundTrack( const char *intro, const char *loop ){
if ( !intro ) {
intro = "";
}
if ( !loop || !loop[0] ) {
loop = intro;
}
Com_DPrintf( "S_StartBackgroundTrack( %s, %s )\n", intro, loop );
if ( !intro[0] ) {
return;
}
if( !loop ) {
s_backgroundLoop[0] = 0;
} else {
Q_strncpyz( s_backgroundLoop, loop, sizeof( s_backgroundLoop ) );
}
S_OpenBackgroundStream( intro );
}
/*
======================
S_UpdateBackgroundTrack
======================
*/
void S_UpdateBackgroundTrack( void ) {
int bufferSamples;
int fileSamples;
byte raw[30000]; // just enough to fit in a mac stack frame
int fileBytes;
int r;
static float musicVolume = 0.5f;
if(!s_backgroundStream) {
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 < s_soundtime ) {
s_rawend = s_soundtime;
}
while ( s_rawend < s_soundtime + MAX_RAW_SAMPLES ) {
bufferSamples = MAX_RAW_SAMPLES - (s_rawend - s_soundtime);
// decide how much data needs to be read from the file
fileSamples = (bufferSamples * dma.speed) / s_backgroundStream->info.rate;
// our max buffer size
fileBytes = fileSamples * (s_backgroundStream->info.width * s_backgroundStream->info.channels);
if ( fileBytes > sizeof(raw) ) {
fileBytes = sizeof(raw);
fileSamples = fileBytes / (s_backgroundStream->info.width * s_backgroundStream->info.channels);
}
// Read
r = S_CodecReadStream(s_backgroundStream, fileBytes, raw);
if(r < fileBytes)
{
fileBytes = r;
fileSamples = r / (s_backgroundStream->info.width * s_backgroundStream->info.channels);
}
if(r > 0)
{
// add to raw buffer
S_Base_RawSamples( fileSamples, s_backgroundStream->info.rate,
s_backgroundStream->info.width, s_backgroundStream->info.channels, raw, musicVolume );
}
else
{
// loop
if(s_backgroundLoop[0])
{
S_OpenBackgroundStream( s_backgroundLoop );
if(!s_backgroundStream)
return;
}
else
{
S_Base_StopBackgroundTrack();
return;
}
}
}
}
