+static qboolean SND_PaintChannel (channel_t *ch, unsigned int count)
+{
+ int snd_vol, vol[SND_LISTENERS];
+ const snd_buffer_t *sb;
+ unsigned int i, sb_offset;
+
+ // If this channel manages its own volume
+ if (ch->flags & CHANNELFLAG_FULLVOLUME)
+ snd_vol = 256;
+ else
+ snd_vol = (int)(volume.value * 256);
+
+ for (i = 0;i < SND_LISTENERS;i++)
+ vol[i] = ch->listener_volume[i] * snd_vol;
+
+ sb_offset = ch->pos;
+ sb = ch->sfx->fetcher->getsb (ch, &sb_offset, count);
+ if (sb == NULL)
+ {
+ Con_DPrintf("SND_PaintChannel: ERROR: can't get sound buffer from sfx \"%s\"\n",
+ ch->sfx->name, count);
+ }
+ else
+ {
+#if SND_LISTENERS != 8
+# error the following code only supports up to 8 channels, update it
+#endif
+ if (sb->format.width == 1)
+ {
+ const signed char *samples = (signed char*)sb->samples + (ch->pos - sb_offset) * sb->format.channels;
+
+ // Stereo sound support
+ if (sb->format.channels == 2)
+ {
+ if (vol[6] + vol[7] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 8;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 8;
+ paintbuffer[i].sample[3] += (samples[1] * vol[3]) >> 8;
+ paintbuffer[i].sample[4] += ((samples[0] + samples[1]) * vol[4]) >> 9;
+ paintbuffer[i].sample[5] += ((samples[0] + samples[1]) * vol[5]) >> 9;
+ paintbuffer[i].sample[6] += (samples[0] * vol[6]) >> 8;
+ paintbuffer[i].sample[7] += (samples[1] * vol[7]) >> 8;
+ samples += 2;
+ }
+ }
+ else if (vol[4] + vol[5] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 8;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 8;
+ paintbuffer[i].sample[3] += (samples[1] * vol[3]) >> 8;
+ paintbuffer[i].sample[4] += ((samples[0] + samples[1]) * vol[4]) >> 9;
+ paintbuffer[i].sample[5] += ((samples[0] + samples[1]) * vol[5]) >> 9;
+ samples += 2;
+ }
+ }
+ else if (vol[2] + vol[3] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 8;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 8;
+ paintbuffer[i].sample[3] += (samples[1] * vol[3]) >> 8;
+ samples += 2;
+ }
+ }
+ else if (vol[0] + vol[1] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 8;
+ samples += 2;
+ }
+ }
+ }
+ else if (sb->format.channels == 1)
+ {
+ if (vol[6] + vol[7] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 8;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 8;
+ paintbuffer[i].sample[3] += (samples[0] * vol[3]) >> 8;
+ paintbuffer[i].sample[4] += (samples[0] * vol[4]) >> 8;
+ paintbuffer[i].sample[5] += (samples[0] * vol[5]) >> 8;
+ paintbuffer[i].sample[6] += (samples[0] * vol[6]) >> 8;
+ paintbuffer[i].sample[7] += (samples[0] * vol[7]) >> 8;
+ samples += 1;
+ }
+ }
+ else if (vol[4] + vol[5] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 8;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 8;
+ paintbuffer[i].sample[3] += (samples[0] * vol[3]) >> 8;
+ paintbuffer[i].sample[4] += (samples[0] * vol[4]) >> 8;
+ paintbuffer[i].sample[5] += (samples[0] * vol[5]) >> 8;
+ samples += 1;
+ }
+ }
+ else if (vol[2] + vol[3] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 8;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 8;
+ paintbuffer[i].sample[3] += (samples[0] * vol[3]) >> 8;
+ samples += 1;
+ }
+ }
+ else if (vol[0] + vol[1] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 8;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 8;
+ samples += 1;
+ }
+ }
+ }
+ else
+ return false; // unsupported number of channels in sound
+ }
+ else if (sb->format.width == 2)
+ {
+ const signed short *samples = (signed short*)sb->samples + (ch->pos - sb_offset) * sb->format.channels;