]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - snd_mix.c
restructured parts of explosion code
[xonotic/darkplaces.git] / snd_mix.c
index 1da0fcf6f29bf8b9f08c697e9496213642fc6f10..29e319f890d56932444e5c06cb44c7d054889df2 100644 (file)
--- a/snd_mix.c
+++ b/snd_mix.c
@@ -8,7 +8,7 @@ of the License, or (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 See the GNU General Public License for more details.
 
@@ -21,252 +21,237 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "quakedef.h"
 
-#ifdef _WIN32
-#include "winquake.h"
-#else
-#define DWORD  unsigned long
-#endif
+typedef struct
+{
+       int left;
+       int right;
+} portable_samplepair_t;
 
-#define        PAINTBUFFER_SIZE        512
+// LordHavoc: was 512, expanded to 2048
+#define        PAINTBUFFER_SIZE 2048
 portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE];
-int            snd_scaletable[32][256];
-int    *snd_p, snd_linear_count, snd_vol;
-short  *snd_out;
-
-void Snd_WriteLinearBlastStereo16 (void);
+int snd_scaletable[32][256];
 
-extern cvar_t snd_swapstereo;
-void Snd_WriteLinearBlastStereo16 (void)
+/*
+// LordHavoc: disabled this because it desyncs with the video too easily
+extern cvar_t cl_avidemo;
+static FILE *cl_avidemo_soundfile = NULL;
+void S_CaptureAVISound(portable_samplepair_t *buf, int length)
 {
-       int             i;
-       int             val;
+       int i, n;
+       qbyte out[PAINTBUFFER_SIZE * 4];
+       char filename[MAX_OSPATH];
 
-       if (snd_swapstereo.value)
+       if (cl_avidemo.value >= 0.1f)
        {
-               for (i=0 ; i<snd_linear_count ; i+=2)
+               if (cl_avidemo_soundfile == NULL)
                {
-                       val = (snd_p[i+1]*snd_vol)>>8;
-                       if (val > 0x7fff)
-                               snd_out[i] = 0x7fff;
-                       else if (val < (short)0x8000)
-                               snd_out[i] = (short)0x8000;
-                       else
-                               snd_out[i] = val;
-
-                       val = (snd_p[i]*snd_vol)>>8;
-                       if (val > 0x7fff)
-                               snd_out[i+1] = 0x7fff;
-                       else if (val < (short)0x8000)
-                               snd_out[i+1] = (short)0x8000;
-                       else
-                               snd_out[i+1] = val;
+                       cl_avidemo_soundfile = FS_Open ("dpavi.wav", "wb", false);
+                       memset(out, 0, 44);
+                       fwrite(out, 1, 44, cl_avidemo_soundfile);
+                       // header will be filled out when file is closed
                }
-       }
-       else
-       {
-               for (i=0 ; i<snd_linear_count ; i+=2)
+               fseek(cl_avidemo_soundfile, 0, SEEK_END);
+               // write the sound buffer as little endian 16bit interleaved stereo
+               for(i = 0;i < length;i++)
                {
-                       val = (snd_p[i]*snd_vol)>>8;
-                       if (val > 0x7fff)
-                               snd_out[i] = 0x7fff;
-                       else if (val < (short)0x8000)
-                               snd_out[i] = (short)0x8000;
-                       else
-                               snd_out[i] = val;
-
-                       val = (snd_p[i+1]*snd_vol)>>8;
-                       if (val > 0x7fff)
-                               snd_out[i+1] = 0x7fff;
-                       else if (val < (short)0x8000)
-                               snd_out[i+1] = (short)0x8000;
-                       else
-                               snd_out[i+1] = val;
+                       n = buf[i].left >> 2; // quiet enough to prevent clipping most of the time
+                       n = bound(-32768, n, 32767);
+                       out[i*4+0] = n & 0xFF;
+                       out[i*4+1] = (n >> 8) & 0xFF;
+                       n = buf[i].right >> 2; // quiet enough to prevent clipping most of the time
+                       n = bound(-32768, n, 32767);
+                       out[i*4+2] = n & 0xFF;
+                       out[i*4+3] = (n >> 8) & 0xFF;
                }
-       }
-}
-
-void S_TransferStereo16 (int endtime)
-{
-       int             lpos;
-       int             lpaintedtime;
-       DWORD   *pbuf;
-#ifdef _WIN32
-       int             reps;
-       DWORD   dwSize,dwSize2;
-       DWORD   *pbuf2;
-       HRESULT hresult;
-#endif
-       
-       snd_vol = volume.value*256;
-
-       snd_p = (int *) paintbuffer;
-       lpaintedtime = paintedtime;
-
-#ifdef _WIN32
-       if (pDSBuf)
-       {
-               reps = 0;
-
-               while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &pbuf, &dwSize, 
-                                                                          &pbuf2, &dwSize2, 0)) != DS_OK)
+               if (fwrite(out, 4, length, cl_avidemo_soundfile) < length)
                {
-                       if (hresult != DSERR_BUFFERLOST)
-                       {
-                               Con_Printf ("S_TransferStereo16: DS::Lock Sound Buffer Failed\n");
-                               S_Shutdown ();
-                               S_Startup ();
-                               return;
-                       }
-
-                       if (++reps > 10000)
-                       {
-                               Con_Printf ("S_TransferStereo16: DS: couldn't restore buffer\n");
-                               S_Shutdown ();
-                               S_Startup ();
-                               return;
-                       }
+                       Cvar_SetValueQuick(&cl_avidemo, 0);
+                       Con_Print("avi saving sound failed, out of disk space?  stopping avi demo capture.\n");
                }
        }
-       else
-#endif
+       else if (cl_avidemo_soundfile)
        {
-               pbuf = (DWORD *)shm->buffer;
+               // file has not been closed yet, close it
+               fseek(cl_avidemo_soundfile, 0, SEEK_END);
+               i = ftell(cl_avidemo_soundfile);
+
+               //"RIFF", (int) unknown (chunk size), "WAVE",
+               //"fmt ", (int) 16 (chunk size), (short) format 1 (uncompressed PCM), (short) 2 channels, (int) unknown rate, (int) unknown bytes per second, (short) 4 bytes per sample (channels * bytes per channel), (short) 16 bits per channel
+               //"data", (int) unknown (chunk size)
+               memcpy(out, "RIFF****WAVEfmt \x10\x00\x00\x00\x01\x00\x02\x00********\x04\x00\x10\x00data****", 44);
+               // the length of the whole RIFF chunk
+               n = i - 8;
+               out[4] = (n) & 0xFF;
+               out[5] = (n >> 8) & 0xFF;
+               out[6] = (n >> 16) & 0xFF;
+               out[7] = (n >> 24) & 0xFF;
+               // rate
+               n = shm->speed;
+               out[24] = (n) & 0xFF;
+               out[25] = (n >> 8) & 0xFF;
+               out[26] = (n >> 16) & 0xFF;
+               out[27] = (n >> 24) & 0xFF;
+               // bytes per second (rate * channels * bytes per channel)
+               n = shm->speed * 4;
+               out[28] = (n) & 0xFF;
+               out[29] = (n >> 8) & 0xFF;
+               out[30] = (n >> 16) & 0xFF;
+               out[31] = (n >> 24) & 0xFF;
+               // the length of the data chunk
+               n = i - 44;
+               out[40] = (n) & 0xFF;
+               out[41] = (n >> 8) & 0xFF;
+               out[42] = (n >> 16) & 0xFF;
+               out[43] = (n >> 24) & 0xFF;
+
+               fseek(cl_avidemo_soundfile, 0, SEEK_SET);
+               fwrite(out, 1, 44, cl_avidemo_soundfile);
+               fclose(cl_avidemo_soundfile);
+               cl_avidemo_soundfile = NULL;
        }
-
-       while (lpaintedtime < endtime)
-       {
-       // handle recirculating buffer issues
-               lpos = lpaintedtime & ((shm->samples>>1)-1);
-
-               snd_out = (short *) pbuf + (lpos<<1);
-
-               snd_linear_count = (shm->samples>>1) - lpos;
-               if (lpaintedtime + snd_linear_count > endtime)
-                       snd_linear_count = endtime - lpaintedtime;
-
-               snd_linear_count <<= 1;
-
-       // write a linear blast of samples
-               Snd_WriteLinearBlastStereo16 ();
-
-               snd_p += snd_linear_count;
-               lpaintedtime += (snd_linear_count>>1);
-       }
-
-#ifdef _WIN32
-       if (pDSBuf)
-               pDSBuf->lpVtbl->Unlock(pDSBuf, pbuf, dwSize, NULL, 0);
-#endif
 }
+*/
 
 void S_TransferPaintBuffer(int endtime)
 {
-       int     out_idx;
-       int     count;
-       int     out_mask;
-       int     *p;
-       int     step;
-       int             val;
-       int             snd_vol;
-       DWORD   *pbuf;
-#ifdef _WIN32
-       int             reps;
-       DWORD   dwSize,dwSize2;
-       DWORD   *pbuf2;
-       HRESULT hresult;
-#endif
-
-       if (shm->samplebits == 16 && shm->channels == 2)
+       void *pbuf;
+       if ((pbuf = S_LockBuffer()))
        {
-               S_TransferStereo16 (endtime);
-               return;
-       }
-       
-       p = (int *) paintbuffer;
-       count = (endtime - paintedtime) * shm->channels;
-       out_mask = shm->samples - 1; 
-       out_idx = paintedtime * shm->channels & out_mask;
-       step = 3 - shm->channels;
-       snd_vol = volume.value*256;
-
-#ifdef _WIN32
-       if (pDSBuf)
-       {
-               reps = 0;
-
-               while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &pbuf, &dwSize, 
-                                                                          &pbuf2,&dwSize2, 0)) != DS_OK)
+               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)
                {
-                       if (hresult != DSERR_BUFFERLOST)
+                       // 16bit
+                       short *snd_out;
+                       if (shm->format.channels == 2)
                        {
-                               Con_Printf ("S_TransferPaintBuffer: DS::Lock Sound Buffer Failed\n");
-                               S_Shutdown ();
-                               S_Startup ();
-                               return;
+                               // 16bit 2 channels (stereo)
+                               while (lpaintedtime < endtime)
+                               {
+                                       // handle recirculating buffer issues
+                                       i = lpaintedtime & ((shm->samples >> 1) - 1);
+                                       snd_out = (short *) pbuf + (i << 1);
+                                       snd_linear_count = (shm->samples >> 1) - i;
+                                       if (snd_linear_count > endtime - lpaintedtime)
+                                               snd_linear_count = endtime - lpaintedtime;
+                                       snd_linear_count <<= 1;
+                                       if (snd_swapstereo.value)
+                                       {
+                                               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);
+                                               }
+                                       }
+                                       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_p += snd_linear_count;
+                                       lpaintedtime += (snd_linear_count >> 1);
+                               }
                        }
-
-                       if (++reps > 10000)
+                       else
                        {
-                               Con_Printf ("S_TransferPaintBuffer: DS: couldn't restore buffer\n");
-                               S_Shutdown ();
-                               S_Startup ();
-                               return;
+                               // 16bit 1 channel (mono)
+                               while (lpaintedtime < endtime)
+                               {
+                                       // handle recirculating buffer issues
+                                       i = lpaintedtime & (shm->samples - 1);
+                                       snd_out = (short *) pbuf + i;
+                                       snd_linear_count = shm->samples - i;
+                                       if (snd_linear_count > endtime - lpaintedtime)
+                                               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;
+                                               snd_out[i] = bound(-32768, val, 32767);
+                                       }
+                                       snd_p += snd_linear_count << 1;
+                                       lpaintedtime += snd_linear_count;
+                               }
                        }
                }
-       }
-       else
-#endif
-       {
-               pbuf = (DWORD *)shm->buffer;
-       }
-
-       if (shm->samplebits == 16)
-       {
-               short *out = (short *) pbuf;
-               while (count--)
-               {
-                       val = (*p * snd_vol) >> 8;
-                       p+= step;
-                       if (val > 0x7fff)
-                               val = 0x7fff;
-                       else if (val < (short)0x8000)
-                               val = (short)0x8000;
-                       out[out_idx] = val;
-                       out_idx = (out_idx + 1) & out_mask;
-               }
-       }
-       else if (shm->samplebits == 8)
-       {
-               unsigned char *out = (unsigned char *) pbuf;
-               while (count--)
+               else
                {
-                       val = (*p * snd_vol) >> 8;
-                       p+= step;
-                       if (val > 0x7fff)
-                               val = 0x7fff;
-                       else if (val < (short)0x8000)
-                               val = (short)0x8000;
-                       out[out_idx] = (val>>8) + 128;
-                       out_idx = (out_idx + 1) & out_mask;
+                       // 8bit
+                       unsigned char *snd_out;
+                       if (shm->format.channels == 2)
+                       {
+                               // 8bit 2 channels (stereo)
+                               while (lpaintedtime < endtime)
+                               {
+                                       // handle recirculating buffer issues
+                                       i = lpaintedtime & ((shm->samples >> 1) - 1);
+                                       snd_out = (unsigned char *) pbuf + (i << 1);
+                                       snd_linear_count = (shm->samples >> 1) - i;
+                                       if (snd_linear_count > endtime - lpaintedtime)
+                                               snd_linear_count = endtime - lpaintedtime;
+                                       snd_linear_count <<= 1;
+                                       if (snd_swapstereo.value)
+                                       {
+                                               for (i = 0;i < snd_linear_count;i += 2)
+                                               {
+                                                       val = ((snd_p[i + 1] * snd_vol) >> 16) + 128;
+                                                       snd_out[i    ] = bound(0, val, 255);
+                                                       val = ((snd_p[i    ] * snd_vol) >> 16) + 128;
+                                                       snd_out[i + 1] = bound(0, val, 255);
+                                               }
+                                       }
+                                       else
+                                       {
+                                               for (i = 0;i < snd_linear_count;i += 2)
+                                               {
+                                                       val = ((snd_p[i    ] * snd_vol) >> 16) + 128;
+                                                       snd_out[i    ] = bound(0, val, 255);
+                                                       val = ((snd_p[i + 1] * snd_vol) >> 16) + 128;
+                                                       snd_out[i + 1] = bound(0, val, 255);
+                                               }
+                                       }
+                                       snd_p += snd_linear_count;
+                                       lpaintedtime += (snd_linear_count >> 1);
+                               }
+                       }
+                       else
+                       {
+                               // 8bit 1 channel (mono)
+                               while (lpaintedtime < endtime)
+                               {
+                                       // handle recirculating buffer issues
+                                       i = lpaintedtime & (shm->samples - 1);
+                                       snd_out = (unsigned char *) pbuf + i;
+                                       snd_linear_count = shm->samples - i;
+                                       if (snd_linear_count > endtime - lpaintedtime)
+                                               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;
+                                               snd_out[i    ] = bound(0, val, 255);
+                                       }
+                                       snd_p += snd_linear_count << 1;
+                                       lpaintedtime += snd_linear_count;
+                               }
+                       }
                }
-       }
-
-#ifdef _WIN32
-       if (pDSBuf) {
-               DWORD dwNewpos, dwWrite;
-               int il = paintedtime;
-               int ir = endtime - paintedtime;
-               
-               ir += il;
 
-               pDSBuf->lpVtbl->Unlock(pDSBuf, pbuf, dwSize, NULL, 0);
-
-               pDSBuf->lpVtbl->GetCurrentPosition(pDSBuf, &dwNewpos, &dwWrite);
-
-//             if ((dwNewpos >= il) && (dwNewpos <= ir))
-//                     Con_Printf("%d-%d p %d c\n", il, ir, dwNewpos);
+               S_UnlockBuffer();
        }
-#endif
 }
 
 
@@ -278,77 +263,126 @@ CHANNEL MIXING
 ===============================================================================
 */
 
-void SND_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int endtime);
-void SND_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int endtime);
+qboolean SND_PaintChannelFrom8 (channel_t *ch, int endtime);
+qboolean SND_PaintChannelFrom16 (channel_t *ch, int endtime);
 
 void S_PaintChannels(int endtime)
 {
-       int     i;
-       int     end;
+       unsigned int i;
+       int end;
        channel_t *ch;
-       sfxcache_t      *sc;
-       int             ltime, count;
+       sfx_t *sfx;
+       int ltime, count;
 
        while (paintedtime < endtime)
        {
-       // if paintbuffer is smaller than DMA buffer
+               // if paintbuffer is smaller than DMA buffer
                end = endtime;
                if (endtime - paintedtime > PAINTBUFFER_SIZE)
                        end = paintedtime + PAINTBUFFER_SIZE;
 
-       // clear the paint buffer
-               memset(paintbuffer, 0, (end - paintedtime) * sizeof(portable_samplepair_t));
+               // clear the paint buffer, filling it with data from rawsamples (music/video/whatever)
+               S_RawSamples_Dequeue(&paintbuffer->left, end - paintedtime);
 
-       // paint in the channels.
+               // paint in the channels.
                ch = channels;
                for (i=0; i<total_channels ; i++, ch++)
                {
-                       if (!ch->sfx)
+                       sfx = ch->sfx;
+                       if (!sfx)
                                continue;
                        if (!ch->leftvol && !ch->rightvol)
                                continue;
-                       sc = S_LoadSound (ch->sfx);
-                       if (!sc)
+                       if (!S_LoadSound (sfx, true))
                                continue;
 
-                       ltime = paintedtime;
+                       // if the channel is paused
+                       if (ch->flags & CHANNELFLAG_PAUSED)
+                       {
+                               size_t pausedtime;
+
+                               pausedtime = end - paintedtime;
+                               ch->lastptime += pausedtime;
+                               ch->end += pausedtime;
+                               continue;
+                       }
+
+                       // if the sound hasn't been painted last time, update his position
+                       if (ch->lastptime < paintedtime)
+                       {
+                               ch->pos += paintedtime - ch->lastptime;
+
+                               // If the sound should have ended by then
+                               if ((unsigned int)ch->pos > sfx->total_length)
+                               {
+                                       int loopstart;
 
+                                       if (ch->flags & CHANNELFLAG_FORCELOOP)
+                                               loopstart = 0;
+                                       else
+                                               loopstart = -1;
+                                       if (sfx->loopstart >= 0)
+                                               loopstart = sfx->loopstart;
+
+                                       // If the sound is looped
+                                       if (loopstart >= 0)
+                                               ch->pos = (ch->pos - sfx->total_length) % (sfx->total_length - loopstart) + loopstart;
+                                       else 
+                                               ch->pos = sfx->total_length;
+                                       ch->end = paintedtime + sfx->total_length - ch->pos;
+                               }
+                       }
+
+                       ltime = paintedtime;
                        while (ltime < end)
-                       {       // paint up to end
+                       {
+                               qboolean stop_paint;
+
+                               // paint up to end
                                if (ch->end < end)
                                        count = ch->end - ltime;
                                else
                                        count = end - ltime;
 
                                if (count > 0)
-                               {       
-                                       if (sc->width == 1)
-                                               SND_PaintChannelFrom8(ch, sc, count);
+                               {
+                                       if (sfx->format.width == 1)
+                                               stop_paint = !SND_PaintChannelFrom8(ch, count);
                                        else
-                                               SND_PaintChannelFrom16(ch, sc, count);
-       
-                                       ltime += count;
+                                               stop_paint = !SND_PaintChannelFrom16(ch, count);
+
+                                       if (!stop_paint)
+                                       {
+                                               ltime += count;
+                                               ch->lastptime = ltime;
+                                       }
                                }
+                               else
+                                       stop_paint = false;
 
-                       // if at end of loop, restart
                                if (ltime >= ch->end)
                                {
-                                       if (sc->loopstart >= 0)
+                                       // if at end of loop, restart
+                                       if ((sfx->loopstart >= 0 || (ch->flags & CHANNELFLAG_FORCELOOP)) && !stop_paint)
                                        {
-                                               ch->pos = sc->loopstart;
-                                               ch->end = ltime + sc->length - ch->pos;
-                                       }
-                                       else                            
-                                       {       // channel just stopped
-                                               ch->sfx = NULL;
-                                               break;
+                                               ch->pos = bound(0, sfx->loopstart, (int)sfx->total_length - 1);
+                                               ch->end = ltime + sfx->total_length - ch->pos;
                                        }
+                                       // channel just stopped
+                                       else
+                                               stop_paint = true;
+                               }
+
+                               if (stop_paint)
+                               {
+                                       S_StopChannel (ch - channels);
+                                       break;
                                }
                        }
-                                                                                                                         
                }
 
-       // transfer out according to DMA format
+               // transfer out according to DMA format
+               //S_CaptureAVISound(paintbuffer, end - paintedtime);
                S_TransferPaintBuffer(end);
                paintedtime = end;
        }
@@ -356,84 +390,95 @@ void S_PaintChannels(int endtime)
 
 void SND_InitScaletable (void)
 {
-       int             i, j;
-       
-       for (i=0 ; i<32 ; i++)
-               for (j=0 ; j<256 ; j++)
+       int i, j;
+
+       for (i = 0;i < 32;i++)
+               for (j = 0;j < 256;j++)
                        snd_scaletable[i][j] = ((signed char)j) * i * 8;
 }
 
 
-void SND_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int count)
+qboolean SND_PaintChannelFrom8 (channel_t *ch, int count)
 {
-//     int     data;
-       int             *lscale, *rscale;
+       int *lscale, *rscale;
        unsigned char *sfx;
-       int             i;
+       const sfxbuffer_t *sb;
+       int i, n;
 
        if (ch->leftvol > 255)
                ch->leftvol = 255;
        if (ch->rightvol > 255)
                ch->rightvol = 255;
-               
+
        lscale = snd_scaletable[ch->leftvol >> 3];
        rscale = snd_scaletable[ch->rightvol >> 3];
-       if (sc->stereo) // LordHavoc: stereo sound support, and optimizations
-       {
-               sfx = (unsigned char *)sc->data + ch->pos * 2;
 
-               for (i=0 ; i<count ; i++)
+       sb = ch->sfx->fetcher->getsb (ch, ch->pos, count);
+       if (sb == NULL)
+               return false;
+
+       if (ch->sfx->format.channels == 2)
+       {
+               // LordHavoc: stereo sound support, and optimizations
+               sfx = (unsigned char *)sb->data + (ch->pos - sb->offset) * 2;
+               for (i = 0;i < count;i++)
                {
                        paintbuffer[i].left += lscale[*sfx++];
                        paintbuffer[i].right += rscale[*sfx++];
                }
-               
        }
        else
        {
-               sfx = (unsigned char *)sc->data + ch->pos;
-
-               for (i=0 ; i<count ; i++)
+               sfx = (unsigned char *)sb->data + ch->pos - sb->offset;
+               for (i = 0;i < count;i++)
                {
-                       paintbuffer[i].left += lscale[*sfx];
-                       paintbuffer[i].right += rscale[*sfx++];
+                       n = *sfx++;
+                       paintbuffer[i].left += lscale[n];
+                       paintbuffer[i].right += rscale[n];
                }
-               
+
        }
        ch->pos += count;
+       return true;
 }
 
-void SND_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int count)
+qboolean SND_PaintChannelFrom16 (channel_t *ch, int count)
 {
-//     int data;
-//     int left, right;
        int leftvol, rightvol;
        signed short *sfx;
-       int     i;
+       const sfxbuffer_t *sb;
+       int i;
 
        leftvol = ch->leftvol;
        rightvol = ch->rightvol;
-       if (sc->stereo) // LordHavoc: stereo sound support, and optimizations
+
+       sb = ch->sfx->fetcher->getsb (ch, ch->pos, count);
+       if (sb == NULL)
+               return false;
+
+       if (ch->sfx->format.channels == 2)
        {
-               sfx = (signed short *)sc->data + ch->pos * 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 += (short) ((int) (*sfx++ * leftvol) >> 8);
-                       paintbuffer[i].right += (short) ((int) (*sfx++ * rightvol) >> 8);
+                       paintbuffer[i].left += (*sfx++ * leftvol) >> 8;
+                       paintbuffer[i].right += (*sfx++ * rightvol) >> 8;
                }
        }
        else
        {
-               sfx = (signed short *)sc->data + ch->pos;
+               sfx = (signed short *)sb->data + ch->pos - sb->offset;
 
                for (i=0 ; i<count ; i++)
                {
-                       paintbuffer[i].left += (short) ((int) (*sfx * leftvol) >> 8);
-                       paintbuffer[i].right += (short) ((int) (*sfx++ * rightvol) >> 8);
+                       paintbuffer[i].left += (*sfx * leftvol) >> 8;
+                       paintbuffer[i].right += (*sfx++ * rightvol) >> 8;
                }
        }
 
        ch->pos += count;
+       return true;
 }