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

Fx nosound mode and wave recording

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1923
This commit is contained in:
Sjoerd van der Berg 2004-08-24 10:52:06 +00:00
parent 0da2fd2d36
commit 3641ea7beb
1 changed files with 36 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

44
src/hardware/mixer.cpp
View file

@ -266,6 +266,22 @@ static void MIXER_MixData(Bitu needed) {
chan->Mix(needed);
chan=chan->next;
}
if (mixer.wave.handle) {
Bitu added=needed-mixer.done;
Bitu readpos=(mixer.pos+mixer.done-added)&MIXER_BUFMASK;
while (added--) {
Bits sample=mixer.work[readpos][0] >> MIXER_VOLSHIFT;
mixer.wave.buf[mixer.wave.used][0]=MIXER_CLIP(sample);
sample=mixer.work[readpos][1] >> MIXER_VOLSHIFT;
mixer.wave.buf[mixer.wave.used][1]=MIXER_CLIP(sample);
readpos=(readpos+1)&MIXER_BUFMASK;
if (++mixer.wave.used==MIXER_WAVESIZE) {
mixer.wave.length+=MIXER_WAVESIZE*MIXER_SSIZE;
mixer.wave.used=0;
fwrite(mixer.wave.buf,MIXER_WAVESIZE*MIXER_SSIZE,1,mixer.wave.handle);
}
}
}
mixer.done=needed;
}
@ -279,11 +295,23 @@ static void MIXER_Mix(void) {
}
static void MIXER_Mix_NoSound(void) {
mixer.done=0;
MIXER_MixData(mixer.needed);
/* Clear piece we've just generated */
for (Bitu i=0;i<mixer.needed;i++) {
mixer.work[mixer.pos][0]=0;
mixer.work[mixer.pos][1]=0;
mixer.pos=(mixer.pos+1)&MIXER_BUFMASK;
}
/* Reduce count in channels */
for (MixerChannel * chan=mixer.channels;chan;chan=chan->next) {
if (chan->done>mixer.needed) chan->done-=mixer.needed;
else chan->done=0;
}
/* Set values for next tick */
mixer.tick_remain+=mixer.tick_add;
Bitu count=mixer.tick_remain>>MIXER_SHIFT;
mixer.needed=mixer.tick_remain>>MIXER_SHIFT;
mixer.tick_remain&=MIXER_REMAIN;
MIXER_MixData(count);
mixer.done=0;
}
@ -309,11 +337,11 @@ static void MIXER_CallBack(void * userdata, Uint8 *stream, int len) {
}
Bit16s * output=(Bit16s *)stream;
while (need--) {
mixer.work[mixer.pos][0]>>=MIXER_VOLSHIFT;
*output++=MIXER_CLIP(mixer.work[mixer.pos][0]);
Bits sample=mixer.work[mixer.pos][0]>>MIXER_VOLSHIFT;
*output++=MIXER_CLIP(sample);
mixer.work[mixer.pos][0]=0;
mixer.work[mixer.pos][1]>>=MIXER_VOLSHIFT;
*output++=MIXER_CLIP(mixer.work[mixer.pos][1]);
sample=mixer.work[mixer.pos][1]>>MIXER_VOLSHIFT;
*output++=MIXER_CLIP(sample);
mixer.work[mixer.pos][1]=0;
mixer.pos=(mixer.pos+1)&MIXER_BUFMASK;
}
@ -454,7 +482,7 @@ void MIXER_Init(Section* sec) {
mixer.min_needed=section->Get_int("prebuffer");
if (mixer.min_needed>100) mixer.min_needed=100;
mixer.min_needed=(mixer.freq*mixer.min_needed)/1000;
mixer.needed=mixer.min_needed+1;
MAPPER_AddHandler(MIXER_WaveEvent,MK_f6,MMOD1,"recwave","Rec Wave");
PROGRAMS_MakeFile("MIXER.COM",MIXER_ProgramStart);
}