Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-// snd_mix.c -- portable code to mix sounds for snd_dma.c
+// snd_mix.c -- portable code to mix sounds
#include "quakedef.h"
+#include "snd_main.h"
typedef struct
{
// LordHavoc: was 512, expanded to 2048
#define PAINTBUFFER_SIZE 2048
portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE];
-int snd_scaletable[32][256];
// FIXME: it desyncs with the video too easily
extern cvar_t cl_avidemo;
}
}
+// TODO: rewrite this function
void S_TransferPaintBuffer(int endtime)
{
void *pbuf;
{
int i;
int *snd_p;
- int snd_vol;
int lpaintedtime;
int snd_linear_count;
int val;
snd_p = (int *) paintbuffer;
- snd_vol = volume.value*256;
lpaintedtime = paintedtime;
if (shm->format.width == 2)
{
{
for (i = 0;i < snd_linear_count;i += 2)
{
- val = (snd_p[i + 1] * snd_vol) >> 8;
- snd_out[i ] = bound(-32768, val, 32767);
- val = (snd_p[i ] * snd_vol) >> 8;
- snd_out[i + 1] = bound(-32768, val, 32767);
+ snd_out[i ] = bound(-32768, snd_p[i + 1], 32767);
+ snd_out[i + 1] = bound(-32768, snd_p[i ], 32767);
}
}
else
{
for (i = 0;i < snd_linear_count;i += 2)
{
- val = (snd_p[i ] * snd_vol) >> 8;
- snd_out[i ] = bound(-32768, val, 32767);
- val = (snd_p[i + 1] * snd_vol) >> 8;
- snd_out[i + 1] = bound(-32768, val, 32767);
+ snd_out[i ] = bound(-32768, snd_p[i ], 32767);
+ snd_out[i + 1] = bound(-32768, snd_p[i + 1], 32767);
}
}
snd_p += snd_linear_count;
snd_linear_count = endtime - lpaintedtime;
for (i = 0;i < snd_linear_count;i++)
{
- val = ((snd_p[i * 2 + 0] + snd_p[i * 2 + 1]) * snd_vol) >> 9;
+ val = (snd_p[i * 2 + 0] + snd_p[i * 2 + 1]) >> 1;
snd_out[i] = bound(-32768, val, 32767);
}
snd_p += snd_linear_count << 1;
{
for (i = 0;i < snd_linear_count;i += 2)
{
- val = ((snd_p[i + 1] * snd_vol) >> 16) + 128;
+ val = (snd_p[i + 1] >> 8) + 128;
snd_out[i ] = bound(0, val, 255);
- val = ((snd_p[i ] * snd_vol) >> 16) + 128;
+ val = (snd_p[i ] >> 8) + 128;
snd_out[i + 1] = bound(0, val, 255);
}
}
{
for (i = 0;i < snd_linear_count;i += 2)
{
- val = ((snd_p[i ] * snd_vol) >> 16) + 128;
+ val = (snd_p[i ] >> 8) + 128;
snd_out[i ] = bound(0, val, 255);
- val = ((snd_p[i + 1] * snd_vol) >> 16) + 128;
+ val = (snd_p[i + 1] >> 8) + 128;
snd_out[i + 1] = bound(0, val, 255);
}
}
snd_linear_count = endtime - lpaintedtime;
for (i = 0;i < snd_linear_count;i++)
{
- val = (((snd_p[i * 2] + snd_p[i * 2 + 1]) * snd_vol) >> 17) + 128;
+ val = ((snd_p[i * 2] + snd_p[i * 2 + 1]) >> 9) + 128;
snd_out[i ] = bound(0, val, 255);
}
snd_p += snd_linear_count << 1;
// If the sound is looped
if (loopstart >= 0)
ch->pos = (ch->pos - sfx->total_length) % (sfx->total_length - loopstart) + loopstart;
- else
+ else
ch->pos = sfx->total_length;
ch->end = paintedtime + sfx->total_length - ch->pos;
}
ch->rightvol = 255;
if (sfx->format.width == 1)
- stop_paint = !SND_PaintChannelFrom8(ch, count);
+ stop_paint = !SND_PaintChannelFrom8 (ch, count);
else
- stop_paint = !SND_PaintChannelFrom16(ch, count);
+ stop_paint = !SND_PaintChannelFrom16 (ch, count);
if (!stop_paint)
{
}
}
-void SND_InitScaletable (void)
-{
- int i, j;
-
- for (i = 0;i < 32;i++)
- for (j = 0;j < 256;j++)
- snd_scaletable[i][j] = ((signed char)j) * i * 8;
-}
-
+// TODO: Try to merge SND_PaintChannelFrom8 and SND_PaintChannelFrom16
qboolean SND_PaintChannelFrom8 (channel_t *ch, int count)
{
- int *lscale, *rscale;
- unsigned char *sfx;
+ int snd_vol, leftvol, rightvol;
+ const signed char *sfx;
const sfxbuffer_t *sb;
- int i, n;
+ int i;
+
+ // If this channel manages its own volume
+ if (ch->flags & CHANNELFLAG_FULLVOLUME)
+ snd_vol = 256;
+ else
+ snd_vol = volume.value * 256;
- lscale = snd_scaletable[ch->leftvol >> 3];
- rscale = snd_scaletable[ch->rightvol >> 3];
+ leftvol = ch->leftvol * snd_vol;
+ rightvol = ch->rightvol * snd_vol;
sb = ch->sfx->fetcher->getsb (ch, ch->pos, count);
if (sb == NULL)
return false;
+ // Stereo sound support
if (ch->sfx->format.channels == 2)
{
- // LordHavoc: stereo sound support, and optimizations
- sfx = (unsigned char *)sb->data + (ch->pos - sb->offset) * 2;
+ sfx = sb->data + (ch->pos - sb->offset) * 2;
for (i = 0;i < count;i++)
{
- paintbuffer[i].left += lscale[*sfx++];
- paintbuffer[i].right += rscale[*sfx++];
+ paintbuffer[i].left += (*sfx++ * leftvol) >> 8;
+ paintbuffer[i].right += (*sfx++ * rightvol) >> 8;
}
}
else
{
- sfx = (unsigned char *)sb->data + ch->pos - sb->offset;
+ sfx = sb->data + ch->pos - sb->offset;
for (i = 0;i < count;i++)
{
- n = *sfx++;
- paintbuffer[i].left += lscale[n];
- paintbuffer[i].right += rscale[n];
+ paintbuffer[i].left += (*sfx * leftvol) >> 8;
+ paintbuffer[i].right += (*sfx++ * rightvol) >> 8;
}
}
qboolean SND_PaintChannelFrom16 (channel_t *ch, int count)
{
- int leftvol, rightvol;
+ int snd_vol, leftvol, rightvol;
signed short *sfx;
const sfxbuffer_t *sb;
int i;
- leftvol = ch->leftvol;
- rightvol = ch->rightvol;
+ // If this channel manages its own volume
+ if (ch->flags & CHANNELFLAG_FULLVOLUME)
+ snd_vol = 256;
+ else
+ snd_vol = volume.value * 256;
+
+ leftvol = ch->leftvol * snd_vol;
+ rightvol = ch->rightvol * snd_vol;
sb = ch->sfx->fetcher->getsb (ch, ch->pos, count);
if (sb == NULL)
return false;
+ // Stereo sound support
if (ch->sfx->format.channels == 2)
{
- // LordHavoc: stereo sound support, and optimizations
sfx = (signed short *)sb->data + (ch->pos - sb->offset) * 2;
for (i=0 ; i<count ; i++)
{
- paintbuffer[i].left += (*sfx++ * leftvol) >> 8;
- paintbuffer[i].right += (*sfx++ * rightvol) >> 8;
+ paintbuffer[i].left += (*sfx++ * leftvol) >> 16;
+ paintbuffer[i].right += (*sfx++ * rightvol) >> 16;
}
}
else
for (i=0 ; i<count ; i++)
{
- paintbuffer[i].left += (*sfx * leftvol) >> 8;
- paintbuffer[i].right += (*sfx++ * rightvol) >> 8;
+ paintbuffer[i].left += (*sfx * leftvol) >> 16;
+ paintbuffer[i].right += (*sfx++ * rightvol) >> 16;
}
}
projects / xonotic / darkplaces.git / blobdiff