valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

Turn off speaker faster. More aggressive premixing.

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2403
This commit is contained in:
Peter Veenstra 2005-12-05 12:04:40 +00:00
parent 90d6d74f99
commit 3ecebe3887
2 changed files with 18 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/hardware/mixer.cpp
View file

@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: mixer.cpp,v 1.34 2005-07-19 19:45:32 qbix79 Exp $ */
/* $Id: mixer.cpp,v 1.35 2005-12-05 12:04:40 qbix79 Exp $ */
/*
Remove the sdl code from here and have it handeld in the sdlmain.
@ -198,6 +198,7 @@ INLINE void MixerChannel::AddSamples(Bitu len,void * data) {
Bitu mixpos=mixer.pos+done;
freq_index&=MIXER_REMAIN;
Bitu pos=0;Bitu new_pos;
goto thestart;
while (1) {
new_pos=freq_index >> MIXER_SHIFT;
@ -347,9 +348,9 @@ static void MIXER_Mix_NoSound(void) {
static void MIXER_CallBack(void * userdata, Uint8 *stream, int len) {
Bitu need=(Bitu)len/MIXER_SSIZE;
if (need>mixer.done) {
// LOG_MSG("Buffer underrun");
//LOG_MSG("%d Buffer underrun %d done and %d needed",count++,mixer.done,need);
return;
}
}//else LOG_MSG("%d Buffer regular run %d done and %d needed",count++,mixer.done,need);
/* Reduce done count in all channels */
for (MixerChannel * chan=mixer.channels;chan;chan=chan->next) {
if (chan->done>need) chan->done-=need;
@ -357,12 +358,12 @@ static void MIXER_CallBack(void * userdata, Uint8 *stream, int len) {
}
mixer.done-=need;
mixer.needed-=need;
if (mixer.done>mixer.min_needed) {
if (mixer.done > mixer.min_needed) {
Bitu diff=mixer.done-mixer.min_needed;
mixer.tick_add=((mixer.freq-(diff>>2)) << MIXER_SHIFT)/1000;
mixer.tick_add = ((mixer.freq-(diff/5)) << MIXER_SHIFT)/1000;
} else {
Bitu diff=mixer.needed-mixer.done;
mixer.tick_add=((mixer.freq+diff*3) << MIXER_SHIFT)/1000;
Bitu diff = ((mixer.min_needed>mixer.needed)?mixer.min_needed:mixer.needed) - mixer.done;
mixer.tick_add = ((mixer.freq+(diff*3)) << MIXER_SHIFT)/1000;
}
Bit16s * output=(Bit16s *)stream;
Bits sample;