Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-// snd_mix.c -- portable code to mix sounds
#include "quakedef.h"
#include "snd_main.h"
-typedef struct portable_samplepair_s
-{
- int sample[SND_LISTENERS];
-} portable_sampleframe_t;
+extern cvar_t snd_softclip;
+
+static portable_sampleframe_t paintbuffer[PAINTBUFFER_SIZE];
+static portable_sampleframe_t paintbuffer_unswapped[PAINTBUFFER_SIZE];
-// LordHavoc: was 512, expanded to 2048
-#define PAINTBUFFER_SIZE 2048
-portable_sampleframe_t paintbuffer[PAINTBUFFER_SIZE];
+extern speakerlayout_t snd_speakerlayout; // for querying the listeners
-// FIXME: this desyncs with the video too easily
-extern void SCR_CaptureVideo_SoundFrame(unsigned char *bufstereo16le, size_t length, int rate);
-void S_CaptureAVISound(portable_sampleframe_t *buf, size_t length)
+#ifdef CONFIG_VIDEO_CAPTURE
+static void S_CaptureAVISound(const portable_sampleframe_t *paintbuffer, size_t length)
{
- int n;
size_t i;
- unsigned char out[PAINTBUFFER_SIZE * 4];
- if (!cls.capturevideo_active)
+ unsigned int j;
+
+ if (!cls.capturevideo.active)
return;
- // write the sound buffer as little endian 16bit interleaved stereo
- for(i = 0;i < length;i++)
+
+ // undo whatever swapping the channel layout (swapstereo, ALSA) did
+ for(j = 0; j < snd_speakerlayout.channels; ++j)
{
- n = buf[i].sample[0];
- n = bound(-32768, n, 32767);
- out[i*4+0] = n & 0xFF;
- out[i*4+1] = (n >> 8) & 0xFF;
- n = buf[i].sample[1];
- n = bound(-32768, n, 32767);
- out[i*4+2] = n & 0xFF;
- out[i*4+3] = (n >> 8) & 0xFF;
+ unsigned int j0 = snd_speakerlayout.listeners[j].channel_unswapped;
+ for(i = 0; i < length; ++i)
+ paintbuffer_unswapped[i].sample[j0] = paintbuffer[i].sample[j];
}
- SCR_CaptureVideo_SoundFrame(out, length, shm->format.speed);
+
+ SCR_CaptureVideo_SoundFrame(paintbuffer_unswapped, length);
}
+#endif
+
+extern cvar_t snd_softclip;
-// TODO: rewrite this function
-void S_TransferPaintBuffer(int endtime)
+static void S_SoftClipPaintBuffer(portable_sampleframe_t *painted_ptr, int nbframes, int width, int nchannels)
{
- void *pbuf;
int i;
- portable_sampleframe_t *snd_p;
- int lpaintedtime;
- int snd_frames;
- int val;
- if ((pbuf = S_LockBuffer()))
+
+ if((snd_softclip.integer == 1 && width <= 2) || snd_softclip.integer > 1)
{
- snd_p = paintbuffer;
- lpaintedtime = paintedtime;
- for (lpaintedtime = paintedtime;lpaintedtime < endtime;lpaintedtime += snd_frames)
+ portable_sampleframe_t *p = painted_ptr;
+
+#if 0
+/* Soft clipping, the sound of a dream, thanks to Jon Wattes
+ post to Musicdsp.org */
+#define SOFTCLIP(x) (x) = sin(bound(-M_PI/2, (x), M_PI/2)) * 0.25
+#endif
+
+ // let's do a simple limiter instead, seems to sound better
+ static float maxvol = 0;
+ maxvol = max(1.0f, maxvol * (1.0f - nbframes / (0.4f * snd_renderbuffer->format.speed)));
+#define SOFTCLIP(x) if(fabs(x)>maxvol) maxvol=fabs(x); (x) /= maxvol;
+
+ if (nchannels == 8) // 7.1 surround
{
- // handle recirculating buffer issues
- i = lpaintedtime & (shm->sampleframes - 1);
- snd_frames = shm->sampleframes - i;
- if (snd_frames > endtime - lpaintedtime)
- snd_frames = endtime - lpaintedtime;
- if (shm->format.width == 2)
+ for (i = 0;i < nbframes;i++, p++)
{
- // 16bit
- short *snd_out = (short *) pbuf + i * shm->format.channels;
- if (shm->format.channels == 8)
- {
- // 7.1 surround
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[3], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[2], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[4], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[5], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[6], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[7], 32767);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[2], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[3], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[4], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[5], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[6], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[7], 32767);
- }
- }
- }
- else if (shm->format.channels == 6)
- {
- // 5.1 surround
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[3], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[2], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[4], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[5], 32767);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[2], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[3], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[4], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[5], 32767);
- }
- }
- }
- else if (shm->format.channels == 4)
- {
- // 4.0 surround
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[3], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[2], 32767);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[2], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[3], 32767);
- }
- }
- }
- else if (shm->format.channels == 2)
- {
- // 2.0 stereo
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- *snd_out++ = bound(-32768, snd_p->sample[0], 32767);
- *snd_out++ = bound(-32768, snd_p->sample[1], 32767);
- }
- }
- }
- else if (shm->format.channels == 1)
- {
- // 1.0 mono
- for (i = 0;i < snd_frames;i++, snd_p++)
- *snd_out++ = bound(-32768, (snd_p->sample[0] + snd_p->sample[1]) >> 1, 32767);
- }
+ SOFTCLIP(p->sample[0]);
+ SOFTCLIP(p->sample[1]);
+ SOFTCLIP(p->sample[2]);
+ SOFTCLIP(p->sample[3]);
+ SOFTCLIP(p->sample[4]);
+ SOFTCLIP(p->sample[5]);
+ SOFTCLIP(p->sample[6]);
+ SOFTCLIP(p->sample[7]);
}
- else
+ }
+ else if (nchannels == 6) // 5.1 surround
+ {
+ for (i = 0; i < nbframes; i++, p++)
{
- // 8bit
- unsigned char *snd_out = (unsigned char *) pbuf + i * shm->format.channels;
- if (shm->format.channels == 8)
- {
- // 7.1 surround
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[3] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[2] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[4] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[5] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[6] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[7] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[2] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[3] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[4] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[5] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[6] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[7] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- }
- else if (shm->format.channels == 6)
- {
- // 5.1 surround
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[3] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[2] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[4] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[5] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[2] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[3] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[4] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[5] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- }
- else if (shm->format.channels == 4)
- {
- // 4.0 surround
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[3] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[2] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[2] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[3] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- }
- else if (shm->format.channels == 2)
- {
- // 2.0 stereo
- if (snd_swapstereo.value)
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- else
- {
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = (snd_p->sample[0] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- val = (snd_p->sample[1] >> 8) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
- }
- else if (shm->format.channels == 1)
- {
- // 1.0 mono
- for (i = 0;i < snd_frames;i++, snd_p++)
- {
- val = ((snd_p->sample[0]+snd_p->sample[1]) >> 9) + 128;*snd_out++ = bound(0, val, 255);
- }
- }
+ SOFTCLIP(p->sample[0]);
+ SOFTCLIP(p->sample[1]);
+ SOFTCLIP(p->sample[2]);
+ SOFTCLIP(p->sample[3]);
+ SOFTCLIP(p->sample[4]);
+ SOFTCLIP(p->sample[5]);
}
}
- S_UnlockBuffer();
- }
-}
-
-
-/*
-===============================================================================
-
-CHANNEL MIXING
-
-===============================================================================
-*/
-
-qboolean SND_PaintChannel (channel_t *ch, int endtime);
-
-void S_PaintChannels(int endtime)
-{
- unsigned int i, j;
- int end;
- channel_t *ch;
- sfx_t *sfx;
- int ltime, count;
-
- while (paintedtime < endtime)
- {
- // 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 (paintbuffer[0]));
-
- // paint in the channels.
- ch = channels;
- for (i=0; i<total_channels ; i++, ch++)
+ else if (nchannels == 4) // 4.0 surround
{
- sfx = ch->sfx;
- if (!sfx)
- continue;
- for (j = 0;j < SND_LISTENERS;j++)
- if (ch->listener_volume[j])
- break;
- if (j == SND_LISTENERS)
- continue;
- if (!S_LoadSound (sfx, true))
- continue;
-
- // if the channel is paused
- if (ch->flags & CHANNELFLAG_PAUSED)
+ for (i = 0; i < nbframes; i++, p++)
{
- int pausedtime = end - paintedtime;
- ch->lastptime += pausedtime;
- ch->end += pausedtime;
- continue;
+ SOFTCLIP(p->sample[0]);
+ SOFTCLIP(p->sample[1]);
+ SOFTCLIP(p->sample[2]);
+ SOFTCLIP(p->sample[3]);
}
-
- // if the sound hasn't been painted last time, update his position
- if (ch->lastptime < paintedtime)
+ }
+ else if (nchannels == 2) // 2.0 stereo
+ {
+ for (i = 0; i < nbframes; i++, p++)
{
- 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;
- }
+ SOFTCLIP(p->sample[0]);
+ SOFTCLIP(p->sample[1]);
}
-
- ltime = paintedtime;
- while (ltime < end)
+ }
+ else if (nchannels == 1) // 1.0 mono
+ {
+ for (i = 0; i < nbframes; i++, p++)
{
- qboolean stop_paint;
-
- // paint up to end
- if (ch->end < end)
- count = (int)ch->end - ltime;
- else
- count = end - ltime;
-
- if (count > 0)
- {
- for (j = 0;j < SND_LISTENERS;j++)
- ch->listener_volume[j] = bound(0, ch->listener_volume[j], 255);
-
- stop_paint = !SND_PaintChannel (ch, count);
-
- if (!stop_paint)
- {
- ltime += count;
- ch->lastptime = ltime;
- }
- }
- else
- stop_paint = false;
-
- if (ltime >= ch->end)
- {
- // if at end of loop, restart
- if ((sfx->loopstart >= 0 || (ch->flags & CHANNELFLAG_FORCELOOP)) && !stop_paint)
- {
- 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;
- }
+ SOFTCLIP(p->sample[0]);
}
}
-
- // transfer out according to DMA format
- S_CaptureAVISound (paintbuffer, end - paintedtime);
- S_TransferPaintBuffer(end);
- paintedtime = end;
+#undef SOFTCLIP
}
}
-
-qboolean SND_PaintChannel (channel_t *ch, int count)
+static void S_ConvertPaintBuffer(portable_sampleframe_t *painted_ptr, void *rb_ptr, int nbframes, int width, int nchannels)
{
- int snd_vol, vol[SND_LISTENERS];
- const sfxbuffer_t *sb;
- int i;
-
- // 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 = ch->sfx->fetcher->getsb (ch, ch->pos, count);
- if (sb == NULL)
- return false;
+ int i, val;
-#if SND_LISTENERS != 8
-#error this code only supports up to 8 channels, update it
-#endif
-
- if (ch->sfx->format.width == 1)
+ // FIXME: add 24bit and 32bit float formats
+ // FIXME: optimize with SSE intrinsics?
+ if (width == 2) // 16bit
{
- const signed char *sfx = (signed char *)sb->data + (ch->pos - sb->offset) * ch->sfx->format.channels;
- // Stereo sound support
- if (ch->sfx->format.channels == 2)
+ short *snd_out = (short*)rb_ptr;
+ if (nchannels == 8) // 7.1 surround
{
- if (vol[6] + vol[7] > 0)
- {
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 8;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 8;
- paintbuffer[i].sample[3] += (sfx[1] * vol[3]) >> 8;
- paintbuffer[i].sample[4] += ((sfx[0]+sfx[1]) * vol[4]) >> 9;
- paintbuffer[i].sample[5] += ((sfx[0]+sfx[1]) * vol[5]) >> 9;
- paintbuffer[i].sample[6] += (sfx[0] * vol[6]) >> 8;
- paintbuffer[i].sample[7] += (sfx[1] * vol[7]) >> 8;
- sfx += 2;
- }
- }
- else if (vol[4] + vol[5] > 0)
- {
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 8;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 8;
- paintbuffer[i].sample[3] += (sfx[1] * vol[3]) >> 8;
- paintbuffer[i].sample[4] += ((sfx[0]+sfx[1]) * vol[4]) >> 9;
- paintbuffer[i].sample[5] += ((sfx[0]+sfx[1]) * vol[5]) >> 9;
- sfx += 2;
- }
- }
- else if (vol[2] + vol[3] > 0)
- {
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 8;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 8;
- paintbuffer[i].sample[3] += (sfx[1] * vol[3]) >> 8;
- sfx += 2;
- }
- }
- else if (vol[0] + vol[1] > 0)
+ for (i = 0;i < nbframes;i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 8;
- sfx += 2;
- }
+ val = (int)(painted_ptr->sample[0] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[1] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[2] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[3] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[4] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[5] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[6] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[7] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
}
}
- else if (ch->sfx->format.channels == 1)
+ else if (nchannels == 6) // 5.1 surround
{
- if (vol[6] + vol[7] > 0)
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 8;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 8;
- paintbuffer[i].sample[3] += (sfx[0] * vol[3]) >> 8;
- paintbuffer[i].sample[4] += (sfx[0] * vol[4]) >> 8;
- paintbuffer[i].sample[5] += (sfx[0] * vol[5]) >> 8;
- paintbuffer[i].sample[6] += (sfx[0] * vol[6]) >> 8;
- paintbuffer[i].sample[7] += (sfx[0] * vol[7]) >> 8;
- sfx += 1;
- }
+ val = (int)(painted_ptr->sample[0] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[1] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[2] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[3] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[4] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[5] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
}
- else if (vol[4] + vol[5] > 0)
+ }
+ else if (nchannels == 4) // 4.0 surround
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 8;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 8;
- paintbuffer[i].sample[3] += (sfx[0] * vol[3]) >> 8;
- paintbuffer[i].sample[4] += (sfx[0] * vol[4]) >> 8;
- paintbuffer[i].sample[5] += (sfx[0] * vol[5]) >> 8;
- sfx += 1;
- }
+ val = (int)(painted_ptr->sample[0] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[1] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[2] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[3] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
}
- else if (vol[2] + vol[3] > 0)
+ }
+ else if (nchannels == 2) // 2.0 stereo
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 8;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 8;
- paintbuffer[i].sample[3] += (sfx[0] * vol[3]) >> 8;
- sfx += 1;
- }
+ val = (int)(painted_ptr->sample[0] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
+ val = (int)(painted_ptr->sample[1] * 32768.0f);*snd_out++ = bound(-32768, val, 32767);
}
- else if (vol[0] + vol[1] > 0)
+ }
+ else if (nchannels == 1) // 1.0 mono
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 8;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 8;
- sfx += 1;
- }
+ val = (int)((painted_ptr->sample[0] + painted_ptr->sample[1]) * 16384.0f);*snd_out++ = bound(-32768, val, 32767);
}
}
- else
- return true; // unsupported number of channels in sound
+
+ // noise is really really annoying
+ if (cls.timedemo)
+ memset(rb_ptr, 0, nbframes * nchannels * width);
}
- else if (ch->sfx->format.width == 2)
+ else // 8bit
{
- const signed short *sfx = (signed short *)sb->data + (ch->pos - sb->offset) * ch->sfx->format.channels;
- // Stereo sound support
- if (ch->sfx->format.channels == 2)
+ unsigned char *snd_out = (unsigned char*)rb_ptr;
+ if (nchannels == 8) // 7.1 surround
{
- if (vol[6] + vol[7] > 0)
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 16;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 16;
- paintbuffer[i].sample[3] += (sfx[1] * vol[3]) >> 16;
- paintbuffer[i].sample[4] += ((sfx[0]+sfx[1]) * vol[4]) >> 17;
- paintbuffer[i].sample[5] += ((sfx[0]+sfx[1]) * vol[5]) >> 17;
- paintbuffer[i].sample[6] += (sfx[0] * vol[6]) >> 16;
- paintbuffer[i].sample[7] += (sfx[1] * vol[7]) >> 16;
- sfx += 2;
- }
+ val = (int)(painted_ptr->sample[0] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[1] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[2] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[3] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[4] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[5] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[6] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[7] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
}
- else if (vol[4] + vol[5] > 0)
+ }
+ else if (nchannels == 6) // 5.1 surround
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 16;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 16;
- paintbuffer[i].sample[3] += (sfx[1] * vol[3]) >> 16;
- paintbuffer[i].sample[4] += ((sfx[0]+sfx[1]) * vol[4]) >> 17;
- paintbuffer[i].sample[5] += ((sfx[0]+sfx[1]) * vol[5]) >> 17;
- sfx += 2;
- }
+ val = (int)(painted_ptr->sample[0] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[1] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[2] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[3] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[4] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[5] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
}
- else if (vol[2] + vol[3] > 0)
+ }
+ else if (nchannels == 4) // 4.0 surround
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 16;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 16;
- paintbuffer[i].sample[3] += (sfx[1] * vol[3]) >> 16;
- sfx += 2;
- }
+ val = (int)(painted_ptr->sample[0] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[1] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[2] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[3] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
}
- else if (vol[0] + vol[1] > 0)
+ }
+ else if (nchannels == 2) // 2.0 stereo
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[1] * vol[1]) >> 16;
- sfx += 2;
- }
+ val = (int)(painted_ptr->sample[0] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
+ val = (int)(painted_ptr->sample[1] * 128.0f) + 128; *snd_out++ = bound(0, val, 255);
}
}
- else if (ch->sfx->format.channels == 1)
+ else if (nchannels == 1) // 1.0 mono
{
- if (vol[6] + vol[7] > 0)
+ for (i = 0;i < nbframes;i++, painted_ptr++)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 16;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 16;
- paintbuffer[i].sample[3] += (sfx[0] * vol[3]) >> 16;
- paintbuffer[i].sample[4] += (sfx[0] * vol[4]) >> 16;
- paintbuffer[i].sample[5] += (sfx[0] * vol[5]) >> 16;
- paintbuffer[i].sample[6] += (sfx[0] * vol[6]) >> 16;
- paintbuffer[i].sample[7] += (sfx[0] * vol[7]) >> 16;
- sfx += 1;
- }
+ val = (int)((painted_ptr->sample[0] + painted_ptr->sample[1]) * 64.0f) + 128; *snd_out++ = bound(0, val, 255);
}
- else if (vol[4] + vol[5] > 0)
+ }
+
+ // noise is really really annoying
+ if (cls.timedemo)
+ memset(rb_ptr, 128, nbframes * nchannels);
+ }
+}
+
+
+/*
+===============================================================================
+
+CHANNEL MIXING
+
+===============================================================================
+*/
+
+void S_MixToBuffer(void *stream, unsigned int bufferframes)
+{
+ int channelindex;
+ channel_t *ch;
+ int totalmixframes;
+ unsigned char *outbytes = (unsigned char *) stream;
+ sfx_t *sfx;
+ portable_sampleframe_t *paint;
+ int wantframes;
+ int i;
+ int count;
+ int fetched;
+ int fetch;
+ int istartframe;
+ int iendframe;
+ int ilengthframes;
+ int totallength;
+ int loopstart;
+ int indexfrac;
+ int indexfracstep;
+#define S_FETCHBUFFERSIZE 4096
+ float fetchsampleframes[S_FETCHBUFFERSIZE*2];
+ const float *fetchsampleframe;
+ float vol[SND_LISTENERS];
+ float lerp[2];
+ float sample[3];
+ double posd;
+ double speedd;
+ float maxvol;
+ qboolean looping;
+ qboolean silent;
+
+ // mix as many times as needed to fill the requested buffer
+ while (bufferframes)
+ {
+ // limit to the size of the paint buffer
+ totalmixframes = min(bufferframes, PAINTBUFFER_SIZE);
+
+ // clear the paint buffer
+ memset(paintbuffer, 0, totalmixframes * sizeof(paintbuffer[0]));
+
+ // paint in the channels.
+ // channels with zero volumes still advance in time but don't paint.
+ ch = channels; // cppcheck complains here but it is wrong, channels is a channel_t[MAX_CHANNELS] and not an int
+ for (channelindex = 0;channelindex < (int)total_channels;channelindex++, ch++)
+ {
+ sfx = ch->sfx;
+ if (sfx == NULL)
+ continue;
+ if (!S_LoadSound (sfx, true))
+ continue;
+ if (ch->flags & CHANNELFLAG_PAUSED)
+ continue;
+ if (!sfx->total_length)
+ continue;
+
+ // copy the channel information to the stack for reference, otherwise the
+ // values might change during a mix if the spatializer is updating them
+ // (note: this still may get some old and some new values!)
+ posd = ch->position;
+ speedd = ch->mixspeed * sfx->format.speed / snd_renderbuffer->format.speed;
+ for (i = 0;i < SND_LISTENERS;i++)
+ vol[i] = ch->volume[i];
+
+ // check total volume level, because we can skip some code on silent sounds but other code must still run (position updates mainly)
+ maxvol = 0;
+ for (i = 0;i < SND_LISTENERS;i++)
+ if(vol[i] > maxvol)
+ maxvol = vol[i];
+ switch(snd_renderbuffer->format.width)
{
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 16;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 16;
- paintbuffer[i].sample[3] += (sfx[0] * vol[3]) >> 16;
- paintbuffer[i].sample[4] += (sfx[0] * vol[4]) >> 16;
- paintbuffer[i].sample[5] += (sfx[0] * vol[5]) >> 16;
- sfx += 1;
- }
+ case 1: // 8bpp
+ silent = maxvol < (1.0f / (256.0f));
+ // so silent it has zero effect
+ break;
+ case 2: // 16bpp
+ silent = maxvol < (1.0f / (65536.0f));
+ // so silent it has zero effect
+ break;
+ default: // floating point
+ silent = maxvol < 1.0e-13f;
+ // 130 dB is difference between hearing
+ // threshold and a jackhammer from
+ // working distance.
+ // therefore, anyone who turns up
+ // volume so much they notice this
+ // cutoff, likely already has their
+ // ear-drums blown out anyway.
+ break;
}
- else if (vol[2] + vol[3] > 0)
+
+ // when doing prologic mixing, some channels invert one side
+ if (ch->prologic_invert == -1)
+ vol[1] *= -1.0f;
+
+ // get some sfx info in a consistent form
+ totallength = sfx->total_length;
+ loopstart = (int)sfx->loopstart < totallength ? (int)sfx->loopstart : ((ch->flags & CHANNELFLAG_FORCELOOP) ? 0 : totallength);
+ looping = loopstart < totallength;
+
+ // do the actual paint now (may skip work if silent)
+ paint = paintbuffer;
+ istartframe = 0;
+ for (wantframes = totalmixframes;wantframes > 0;posd += count * speedd, wantframes -= count)
{
- for (i = 0;i < count;i++)
+ // check if this is a delayed sound
+ if (posd < 0)
{
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 16;
- paintbuffer[i].sample[2] += (sfx[0] * vol[2]) >> 16;
- paintbuffer[i].sample[3] += (sfx[0] * vol[3]) >> 16;
- sfx += 1;
+ // for a delayed sound we have to eat into the delay first
+ count = (int)floor(-posd / speedd) + 1;
+ count = bound(1, count, wantframes);
+ // let the for loop iterator apply the skip
+ continue;
}
- }
- else if (vol[0] + vol[1] > 0)
- {
- for (i = 0;i < count;i++)
+
+ // compute a fetch size that won't overflow our buffer
+ count = wantframes;
+ for (;;)
{
- paintbuffer[i].sample[0] += (sfx[0] * vol[0]) >> 16;
- paintbuffer[i].sample[1] += (sfx[0] * vol[1]) >> 16;
- sfx += 1;
+ istartframe = (int)floor(posd);
+ iendframe = (int)floor(posd + (count-1) * speedd);
+ ilengthframes = count > 1 ? (iendframe - istartframe + 2) : 2;
+ if (ilengthframes <= S_FETCHBUFFERSIZE)
+ break;
+ // reduce count by 25% and try again
+ count -= count >> 2;
+ }
+
+ // zero whole fetch buffer for safety
+ // (floating point noise from uninitialized memory = HORRIBLE)
+ // otherwise we would only need to clear the excess
+ if (!silent)
+ memset(fetchsampleframes, 0, ilengthframes*sfx->format.channels*sizeof(fetchsampleframes[0]));
+
+ // if looping, do multiple fetches
+ fetched = 0;
+ for (;;)
+ {
+ fetch = min(ilengthframes - fetched, totallength - istartframe);
+ if (fetch > 0)
+ {
+ if (!silent)
+ sfx->fetcher->getsamplesfloat(ch, sfx, istartframe, fetch, fetchsampleframes + fetched*sfx->format.channels);
+ istartframe += fetch;
+ fetched += fetch;
+ }
+ if (istartframe == totallength && looping && fetched < ilengthframes)
+ {
+ // loop and fetch some more
+ posd += loopstart - totallength;
+ istartframe = loopstart;
+ }
+ else
+ {
+ break;
+ }
+ }
+
+ // set up our fixedpoint resampling variables (float to int conversions are expensive so do not do one per sampleframe)
+ fetchsampleframe = fetchsampleframes;
+ indexfrac = (int)floor((posd - floor(posd)) * 65536.0);
+ indexfracstep = (int)floor(speedd * 65536.0);
+ if (!silent)
+ {
+ if (sfx->format.channels == 2)
+ {
+ // music is stereo
+#if SND_LISTENERS != 8
+#error the following code only supports up to 8 channels, update it
+#endif
+ if (snd_speakerlayout.channels > 2)
+ {
+ // surround mixing
+ for (i = 0;i < count;i++, paint++)
+ {
+ lerp[1] = indexfrac * (1.0f / 65536.0f);
+ lerp[0] = 1.0f - lerp[1];
+ sample[0] = fetchsampleframe[0] * lerp[0] + fetchsampleframe[2] * lerp[1];
+ sample[1] = fetchsampleframe[1] * lerp[0] + fetchsampleframe[3] * lerp[1];
+ sample[2] = (sample[0] + sample[1]) * 0.5f;
+ paint->sample[0] += sample[0] * vol[0];
+ paint->sample[1] += sample[1] * vol[1];
+ paint->sample[2] += sample[0] * vol[2];
+ paint->sample[3] += sample[1] * vol[3];
+ paint->sample[4] += sample[2] * vol[4];
+ paint->sample[5] += sample[2] * vol[5];
+ paint->sample[6] += sample[0] * vol[6];
+ paint->sample[7] += sample[1] * vol[7];
+ indexfrac += indexfracstep;
+ fetchsampleframe += 2 * (indexfrac >> 16);
+ indexfrac &= 0xFFFF;
+ }
+ }
+ else
+ {
+ // stereo mixing
+ for (i = 0;i < count;i++, paint++)
+ {
+ lerp[1] = indexfrac * (1.0f / 65536.0f);
+ lerp[0] = 1.0f - lerp[1];
+ sample[0] = fetchsampleframe[0] * lerp[0] + fetchsampleframe[2] * lerp[1];
+ sample[1] = fetchsampleframe[1] * lerp[0] + fetchsampleframe[3] * lerp[1];
+ paint->sample[0] += sample[0] * vol[0];
+ paint->sample[1] += sample[1] * vol[1];
+ indexfrac += indexfracstep;
+ fetchsampleframe += 2 * (indexfrac >> 16);
+ indexfrac &= 0xFFFF;
+ }
+ }
+ }
+ else if (sfx->format.channels == 1)
+ {
+ // most sounds are mono
+#if SND_LISTENERS != 8
+#error the following code only supports up to 8 channels, update it
+#endif
+ if (snd_speakerlayout.channels > 2)
+ {
+ // surround mixing
+ for (i = 0;i < count;i++, paint++)
+ {
+ lerp[1] = indexfrac * (1.0f / 65536.0f);
+ lerp[0] = 1.0f - lerp[1];
+ sample[0] = fetchsampleframe[0] * lerp[0] + fetchsampleframe[1] * lerp[1];
+ paint->sample[0] += sample[0] * vol[0];
+ paint->sample[1] += sample[0] * vol[1];
+ paint->sample[2] += sample[0] * vol[2];
+ paint->sample[3] += sample[0] * vol[3];
+ paint->sample[4] += sample[0] * vol[4];
+ paint->sample[5] += sample[0] * vol[5];
+ paint->sample[6] += sample[0] * vol[6];
+ paint->sample[7] += sample[0] * vol[7];
+ indexfrac += indexfracstep;
+ fetchsampleframe += (indexfrac >> 16);
+ indexfrac &= 0xFFFF;
+ }
+ }
+ else
+ {
+ // stereo mixing
+ for (i = 0;i < count;i++, paint++)
+ {
+ lerp[1] = indexfrac * (1.0f / 65536.0f);
+ lerp[0] = 1.0f - lerp[1];
+ sample[0] = fetchsampleframe[0] * lerp[0] + fetchsampleframe[1] * lerp[1];
+ paint->sample[0] += sample[0] * vol[0];
+ paint->sample[1] += sample[0] * vol[1];
+ indexfrac += indexfracstep;
+ fetchsampleframe += (indexfrac >> 16);
+ indexfrac &= 0xFFFF;
+ }
+ }
+ }
}
}
+ ch->position = posd;
+ if (!looping && istartframe == totallength)
+ S_StopChannel(ch - channels, false, false);
}
- else
- return true; // unsupported number of channels in sound
+
+ S_SoftClipPaintBuffer(paintbuffer, totalmixframes, snd_renderbuffer->format.width, snd_renderbuffer->format.channels);
+
+#ifdef CONFIG_VIDEO_CAPTURE
+ if (!snd_usethreadedmixing)
+ S_CaptureAVISound(paintbuffer, totalmixframes);
+#endif
+
+ S_ConvertPaintBuffer(paintbuffer, outbytes, totalmixframes, snd_renderbuffer->format.width, snd_renderbuffer->format.channels);
+
+ // advance the output pointer
+ outbytes += totalmixframes * snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
+ bufferframes -= totalmixframes;
}
- ch->pos += count;
- return true;
}
-
projects / xonotic / darkplaces.git / blobdiff