/*
==================
S_ClearSoundBuffer
If we are about to perform file access, clear the buffer
so sound doesn't stutter.
==================
*/
void S_ClearSoundBuffer( void ) {
int clear;
if (!s_soundStarted)
return;
// stop looping sounds
Com_Memset(loopSounds, 0, MAX_GENTITIES*sizeof(loopSound_t));
Com_Memset(loop_channels, 0, MAX_CHANNELS*sizeof(channel_t));
numLoopChannels = 0;
S_ChannelSetup();
s_rawend = 0;
if (dma.samplebits == 8)
clear = 0x80;
else
clear = 0;
SNDDMA_BeginPainting ();
if (dma.buffer)
// TTimo: due to a particular bug workaround in linux sound code,
// have to optionally use a custom C implementation of Com_Memset
// not affecting win32, we have #define Snd_Memset Com_Memset
// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=371
Snd_Memset(dma.buffer, clear, dma.samples * dma.samplebits/8);
SNDDMA_Submit ();
}
/*
==================
S_ClearBuffer
==================
*/
static void S_ClearBuffer (void)
{
int clear;
if (!sound_started)
return;
#ifdef USE_OPENAL
if (alSound)
return;
#endif
s_rawend = 0;
if (dma.samplebits == 8)
clear = 0x80;
else
clear = 0;
SNDDMA_BeginPainting ();
if (dma.buffer)
Snd_Memset(dma.buffer, clear, dma.samples * dma.samplebits/8);
SNDDMA_Submit ();
}
void S_DMAClearBuffer( void ) {
int clear;
if (!dmaInit)
return;
/* Clear the active channels and loops */
Com_Memset( dmaLoops, 0, sizeof( dmaLoops ));
Com_Memset( dmaChannels, 0, sizeof( dmaChannels ));
Com_Memset( &dmaEffect, 0, sizeof( &dmaEffect ));
if (dma.samplebits == 8)
clear = 0x80;
else
clear = 0;
/* Fill the dma buffer */
SNDDMA_BeginPainting ();
if (dma.buffer)
Snd_Memset(dma.buffer, clear, dma.samples * dma.samplebits/8);
SNDDMA_Submit ();
}
