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
+
+typedef struct portable_samplepair_s
{
- int left;
- int right;
-} portable_samplepair_t;
+ int sample[SND_LISTENERS];
+} portable_sampleframe_t;
// LordHavoc: was 512, expanded to 2048
#define PAINTBUFFER_SIZE 2048
-portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE];
+portable_sampleframe_t paintbuffer[PAINTBUFFER_SIZE];
+
-// FIXME: this desyncs with the video too easily
-extern qboolean cl_capturevideo_active;
-extern void SCR_CaptureVideo_SoundFrame(qbyte *bufstereo16le, size_t length, int rate);
-void S_CaptureAVISound(portable_samplepair_t *buf, size_t length)
+extern void SCR_CaptureVideo_SoundFrame(unsigned char *bufstereo16le, size_t length, int rate);
+static void S_CaptureAVISound(size_t length)
{
- int n;
size_t i;
- qbyte out[PAINTBUFFER_SIZE * 4];
- if (!cl_capturevideo_active)
+ unsigned char out[PAINTBUFFER_SIZE * 4];
+ unsigned char* out_ptr;
+
+ if (!cls.capturevideo.active)
return;
+
// write the sound buffer as little endian 16bit interleaved stereo
- for(i = 0;i < length;i++)
+ for(i = 0, out_ptr = out; i < length; i++, out_ptr += 4)
{
- n = buf[i].left;
- n = bound(-32768, n, 32767);
- out[i*4+0] = n & 0xFF;
- out[i*4+1] = (n >> 8) & 0xFF;
- n = buf[i].right;
- n = bound(-32768, n, 32767);
- out[i*4+2] = n & 0xFF;
- out[i*4+3] = (n >> 8) & 0xFF;
+ int n0, n1;
+
+ n0 = paintbuffer[i].sample[0];
+ n0 = bound(-32768, n0, 32767);
+ out_ptr[0] = (unsigned char)n0;
+ out_ptr[1] = (unsigned char)(n0 >> 8);
+
+ n1 = paintbuffer[i].sample[1];
+ n1 = bound(-32768, n1, 32767);
+ out_ptr[2] = (unsigned char)n1;
+ out_ptr[3] = (unsigned char)(n1 >> 8);
}
- SCR_CaptureVideo_SoundFrame(out, length, shm->format.speed);
+ SCR_CaptureVideo_SoundFrame(out, length, snd_renderbuffer->format.speed);
}
-// TODO: rewrite this function
-void S_TransferPaintBuffer(int endtime)
+static unsigned int S_TransferPaintBuffer(snd_ringbuffer_t* rb, unsigned int starttime, unsigned int endtime)
{
- void *pbuf;
- if ((pbuf = S_LockBuffer()))
+ unsigned int partialend;
+
+ // Lock submitbuffer
+ if (!simsound && !SndSys_LockRenderBuffer())
+ return 0;
+
+ partialend = starttime;
+ while (partialend < endtime) // handle recirculating buffer issues
{
- int i;
- int *snd_p;
- int lpaintedtime;
- int snd_linear_count;
+ unsigned int startoffset, maxframes, nbframes, i;
+ void *rb_ptr;
+ portable_sampleframe_t *painted_ptr;
int val;
- snd_p = (int *) paintbuffer;
- lpaintedtime = paintedtime;
- if (shm->format.width == 2)
+
+ startoffset = partialend % rb->maxframes;
+ maxframes = rb->maxframes - startoffset;
+ nbframes = endtime - partialend;
+ if (nbframes > maxframes)
+ nbframes = maxframes;
+
+ rb_ptr = &rb->ring[startoffset * rb->format.width * rb->format.channels];
+ painted_ptr = &paintbuffer[partialend - starttime];
+
+ if (rb->format.width == 2) // 16bit
{
- // 16bit
- short *snd_out;
- if (shm->format.channels == 2)
+ short *snd_out = (short*)rb_ptr;
+ if (rb->format.channels == 8) // 7.1 surround
{
- // 16bit 2 channels (stereo)
- while (lpaintedtime < endtime)
+ for (i = 0;i < nbframes;i++, painted_ptr++)
{
- // 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)
- {
- 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)
- {
- 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;
- lpaintedtime += (snd_linear_count >> 1);
+ *snd_out++ = bound(-32768, painted_ptr->sample[0], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[1], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[2], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[3], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[4], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[5], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[6], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[7], 32767);
}
}
- else
+ else if (rb->format.channels == 6) // 5.1 surround
{
- // 16bit 1 channel (mono)
- while (lpaintedtime < endtime)
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- // 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]) >> 1;
- snd_out[i] = bound(-32768, val, 32767);
- }
- snd_p += snd_linear_count << 1;
- lpaintedtime += snd_linear_count;
+ *snd_out++ = bound(-32768, painted_ptr->sample[0], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[1], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[2], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[3], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[4], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[5], 32767);
+ }
+ }
+ else if (rb->format.channels == 4) // 4.0 surround
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
+ {
+ *snd_out++ = bound(-32768, painted_ptr->sample[0], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[1], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[2], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[3], 32767);
+ }
+ }
+ else if (rb->format.channels == 2) // 2.0 stereo
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
+ {
+ *snd_out++ = bound(-32768, painted_ptr->sample[0], 32767);
+ *snd_out++ = bound(-32768, painted_ptr->sample[1], 32767);
+ }
+ }
+ else if (rb->format.channels == 1) // 1.0 mono
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
+ {
+ val = (painted_ptr->sample[0] + painted_ptr->sample[1]) >> 1;
+ *snd_out++ = bound(-32768, val, 32767);
}
}
}
- else
+ else // 8bit
{
- // 8bit
- unsigned char *snd_out;
- if (shm->format.channels == 2)
+ unsigned char *snd_out = (unsigned char*)rb_ptr;
+ if (rb->format.channels == 8) // 7.1 surround
{
- // 8bit 2 channels (stereo)
- while (lpaintedtime < endtime)
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- // 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] >> 8) + 128;
- snd_out[i ] = bound(0, val, 255);
- val = (snd_p[i ] >> 8) + 128;
- snd_out[i + 1] = bound(0, val, 255);
- }
- }
- else
- {
- for (i = 0;i < snd_linear_count;i += 2)
- {
- val = (snd_p[i ] >> 8) + 128;
- snd_out[i ] = bound(0, val, 255);
- val = (snd_p[i + 1] >> 8) + 128;
- snd_out[i + 1] = bound(0, val, 255);
- }
- }
- snd_p += snd_linear_count;
- lpaintedtime += (snd_linear_count >> 1);
+ val = (painted_ptr->sample[0] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[1] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[2] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[3] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[4] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[5] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[6] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[7] >> 8) + 128; *snd_out++ = bound(0, val, 255);
}
}
- else
+ else if (rb->format.channels == 6) // 5.1 surround
{
- // 8bit 1 channel (mono)
- while (lpaintedtime < endtime)
+ for (i = 0; i < nbframes; i++, painted_ptr++)
{
- // 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]) >> 9) + 128;
- snd_out[i ] = bound(0, val, 255);
- }
- snd_p += snd_linear_count << 1;
- lpaintedtime += snd_linear_count;
+ val = (painted_ptr->sample[0] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[1] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[2] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[3] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[4] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[5] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ }
+ }
+ else if (rb->format.channels == 4) // 4.0 surround
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
+ {
+ val = (painted_ptr->sample[0] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[1] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[2] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[3] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ }
+ }
+ else if (rb->format.channels == 2) // 2.0 stereo
+ {
+ for (i = 0; i < nbframes; i++, painted_ptr++)
+ {
+ val = (painted_ptr->sample[0] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ val = (painted_ptr->sample[1] >> 8) + 128; *snd_out++ = bound(0, val, 255);
+ }
+ }
+ else if (rb->format.channels == 1) // 1.0 mono
+ {
+ for (i = 0;i < nbframes;i++, painted_ptr++)
+ {
+ val = ((painted_ptr->sample[0] + painted_ptr->sample[1]) >> 9) + 128;
+ *snd_out++ = bound(0, val, 255);
}
}
}
- S_UnlockBuffer();
+ partialend += nbframes;
}
+
+ rb->endframe = endtime;
+
+ // Remove outdated samples from the ring buffer, if any
+ if (rb->startframe < soundtime)
+ rb->startframe = soundtime;
+
+ if (!simsound)
+ SndSys_UnlockRenderBuffer();
+
+ return endtime - starttime;
}
===============================================================================
*/
-qboolean SND_PaintChannelFrom8 (channel_t *ch, int endtime);
-qboolean SND_PaintChannelFrom16 (channel_t *ch, int endtime);
-
-void S_PaintChannels(int endtime)
+static qboolean SND_PaintChannel (channel_t *ch, unsigned int count)
{
- unsigned int i;
- int end;
- channel_t *ch;
- sfx_t *sfx;
- int ltime, count;
+ int snd_vol, vol[SND_LISTENERS];
+ const snd_buffer_t *sb;
+ unsigned int i, sb_offset;
- while (paintedtime < endtime)
+ // If this channel manages its own volume
+ if (ch->flags & CHANNELFLAG_FULLVOLUME)
+ snd_vol = 256;
+ else
+ snd_vol = (int)(volume.value * 256);
+
+ // calculate mixing volumes based on channel volumes and volume cvar
+ // also limit the volumes to values that won't clip
+ for (i = 0;i < SND_LISTENERS;i++)
{
- // if paintbuffer is smaller than DMA buffer
- end = endtime;
- if (endtime - paintedtime > PAINTBUFFER_SIZE)
- end = paintedtime + PAINTBUFFER_SIZE;
+ vol[i] = ch->listener_volume[i] * snd_vol;
+ vol[i] = bound(0, vol[i], 65536);
+ }
- // clear the paint buffer
- memset (&paintbuffer, 0, (end - paintedtime) * sizeof (paintbuffer[0]));
+ // if volumes are all zero, just return
+ for (i = 0;i < SND_LISTENERS;i++)
+ if (vol[i])
+ break;
+ if (i == SND_LISTENERS)
+ return false;
- // paint in the channels.
- ch = channels;
- for (i=0; i<total_channels ; i++, ch++)
+ sb_offset = ch->pos;
+ sb = ch->sfx->fetcher->getsb (ch->sfx->fetcher_data, &ch->fetcher_data, &sb_offset, count);
+ if (sb == NULL)
+ {
+ Con_DPrintf("SND_PaintChannel: ERROR: can't get sound buffer from sfx \"%s\"\n",
+ ch->sfx->name); // , count); // or add this? FIXME
+ return false;
+ }
+ else
+ {
+#if SND_LISTENERS != 8
+# error the following code only supports up to 8 channels, update it
+#endif
+ if (sb->format.width == 1)
{
- sfx = ch->sfx;
- if (!sfx)
- continue;
- if (!ch->leftvol && !ch->rightvol)
- continue;
- if (!S_LoadSound (sfx, true))
- continue;
+ const signed char *samples = (signed char*)sb->samples + (ch->pos - sb_offset) * sb->format.channels;
- // if the channel is paused
- if (ch->flags & CHANNELFLAG_PAUSED)
+ // Stereo sound support
+ if (sb->format.channels == 2)
{
- size_t pausedtime;
-
- pausedtime = end - paintedtime;
- ch->lastptime += pausedtime;
- ch->end += pausedtime;
- continue;
+ 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;
+ }
+ }
}
-
- // if the sound hasn't been painted last time, update his position
- if (ch->lastptime < paintedtime)
+ else if (sb->format.channels == 1)
{
- ch->pos += paintedtime - ch->lastptime;
-
- // If the sound should have ended by then
- if ((unsigned int)ch->pos > sfx->total_length)
+ if (vol[6] + vol[7] > 0)
{
- 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;
+ 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;
- ltime = paintedtime;
- while (ltime < end)
+ // Stereo sound support
+ if (sb->format.channels == 2)
{
- qboolean stop_paint;
-
- // paint up to end
- if (ch->end < end)
- count = ch->end - ltime;
- else
- count = end - ltime;
-
- if (count > 0)
+ if (vol[6] + vol[7] > 0)
{
- if (ch->leftvol > 255)
- ch->leftvol = 255;
- if (ch->rightvol > 255)
- ch->rightvol = 255;
-
- if (sfx->format.width == 1)
- stop_paint = !SND_PaintChannelFrom8 (ch, count);
- else
- stop_paint = !SND_PaintChannelFrom16 (ch, count);
-
- if (!stop_paint)
+ for (i = 0;i < count;i++)
{
- ltime += count;
- ch->lastptime = ltime;
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 16;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 16;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 16;
+ paintbuffer[i].sample[3] += (samples[1] * vol[3]) >> 16;
+ paintbuffer[i].sample[4] += ((samples[0] + samples[1]) * vol[4]) >> 17;
+ paintbuffer[i].sample[5] += ((samples[0] + samples[1]) * vol[5]) >> 17;
+ paintbuffer[i].sample[6] += (samples[0] * vol[6]) >> 16;
+ paintbuffer[i].sample[7] += (samples[1] * vol[7]) >> 16;
+ samples += 2;
}
}
- else
- stop_paint = false;
-
- if (ltime >= ch->end)
+ else if (vol[4] + vol[5] > 0)
{
- // if at end of loop, restart
- if ((sfx->loopstart >= 0 || (ch->flags & CHANNELFLAG_FORCELOOP)) && !stop_paint)
+ for (i = 0;i < count;i++)
{
- ch->pos = bound(0, sfx->loopstart, (int)sfx->total_length - 1);
- ch->end = ltime + sfx->total_length - ch->pos;
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 16;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 16;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 16;
+ paintbuffer[i].sample[3] += (samples[1] * vol[3]) >> 16;
+ paintbuffer[i].sample[4] += ((samples[0] + samples[1]) * vol[4]) >> 17;
+ paintbuffer[i].sample[5] += ((samples[0] + samples[1]) * vol[5]) >> 17;
+ samples += 2;
}
- // channel just stopped
- else
- stop_paint = true;
}
-
- if (stop_paint)
+ else if (vol[2] + vol[3] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 16;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 16;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 16;
+ paintbuffer[i].sample[3] += (samples[1] * vol[3]) >> 16;
+ samples += 2;
+ }
+ }
+ else if (vol[0] + vol[1] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 16;
+ paintbuffer[i].sample[1] += (samples[1] * vol[1]) >> 16;
+ 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]) >> 16;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 16;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 16;
+ paintbuffer[i].sample[3] += (samples[0] * vol[3]) >> 16;
+ paintbuffer[i].sample[4] += (samples[0] * vol[4]) >> 16;
+ paintbuffer[i].sample[5] += (samples[0] * vol[5]) >> 16;
+ paintbuffer[i].sample[6] += (samples[0] * vol[6]) >> 16;
+ paintbuffer[i].sample[7] += (samples[0] * vol[7]) >> 16;
+ samples += 1;
+ }
+ }
+ else if (vol[4] + vol[5] > 0)
{
- S_StopChannel (ch - channels);
- break;
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 16;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 16;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 16;
+ paintbuffer[i].sample[3] += (samples[0] * vol[3]) >> 16;
+ paintbuffer[i].sample[4] += (samples[0] * vol[4]) >> 16;
+ paintbuffer[i].sample[5] += (samples[0] * vol[5]) >> 16;
+ samples += 1;
+ }
+ }
+ else if (vol[2] + vol[3] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 16;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 16;
+ paintbuffer[i].sample[2] += (samples[0] * vol[2]) >> 16;
+ paintbuffer[i].sample[3] += (samples[0] * vol[3]) >> 16;
+ samples += 1;
+ }
+ }
+ else if (vol[0] + vol[1] > 0)
+ {
+ for (i = 0;i < count;i++)
+ {
+ paintbuffer[i].sample[0] += (samples[0] * vol[0]) >> 16;
+ paintbuffer[i].sample[1] += (samples[0] * vol[1]) >> 16;
+ samples += 1;
+ }
}
}
+ else
+ return false; // unsupported number of channels in sound
}
-
- // transfer out according to DMA format
- S_CaptureAVISound (paintbuffer, end - paintedtime);
- S_TransferPaintBuffer(end);
- paintedtime = end;
}
+ return true;
}
-
-// TODO: Try to merge SND_PaintChannelFrom8 and SND_PaintChannelFrom16
-qboolean SND_PaintChannelFrom8 (channel_t *ch, int count)
+void S_PaintChannels (snd_ringbuffer_t* rb, unsigned int starttime, unsigned int endtime)
{
- int snd_vol, leftvol, rightvol;
- const signed char *sfx;
- const sfxbuffer_t *sb;
- int i;
-
- // If this channel manages its own volume
- if (ch->flags & CHANNELFLAG_FULLVOLUME)
- snd_vol = 256;
- else
- snd_vol = volume.value * 256;
+ unsigned int paintedtime;
- 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)
- {
- sfx = 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;
- }
- }
- else
+ paintedtime = starttime;
+ while (paintedtime < endtime)
{
- sfx = sb->data + ch->pos - sb->offset;
- for (i = 0;i < count;i++)
- {
- paintbuffer[i].left += (*sfx * leftvol) >> 8;
- paintbuffer[i].right += (*sfx++ * rightvol) >> 8;
- }
+ unsigned int partialend, i, framecount;
+ channel_t *ch;
- }
- ch->pos += count;
- return true;
-}
+ // if paintbuffer is too small
+ if (endtime > paintedtime + PAINTBUFFER_SIZE)
+ partialend = paintedtime + PAINTBUFFER_SIZE;
+ else
+ partialend = endtime;
-qboolean SND_PaintChannelFrom16 (channel_t *ch, int count)
-{
- int snd_vol, leftvol, rightvol;
- signed short *sfx;
- const sfxbuffer_t *sb;
- int i;
+ // clear the paint buffer
+ memset (paintbuffer, 0, (partialend - paintedtime) * sizeof (paintbuffer[0]));
- // If this channel manages its own volume
- if (ch->flags & CHANNELFLAG_FULLVOLUME)
- snd_vol = 256;
- else
- snd_vol = volume.value * 256;
+ // paint in the channels.
+ // channels with zero volumes still advance in time but don't paint.
+ ch = channels;
+ for (i = 0; i < total_channels ; i++, ch++)
+ {
+ sfx_t *sfx;
+ unsigned int ltime;
+ unsigned int count;
- leftvol = ch->leftvol * snd_vol;
- rightvol = ch->rightvol * snd_vol;
+ sfx = ch->sfx;
+ if (sfx == NULL)
+ continue;
+ if (!S_LoadSound (sfx, true))
+ continue;
+ if (ch->flags & CHANNELFLAG_PAUSED)
+ continue;
- sb = ch->sfx->fetcher->getsb (ch, ch->pos, count);
- if (sb == NULL)
- return false;
+ ltime = paintedtime;
+ if (ch->pos < 0)
+ {
+ count = -ch->pos;
+ count = min(count, partialend - ltime);
+ ch->pos += count;
+ ltime += count;
+ }
- // Stereo sound support
- if (ch->sfx->format.channels == 2)
- {
- sfx = (signed short *)sb->data + (ch->pos - sb->offset) * 2;
+ while (ltime < partialend)
+ {
+ // paint up to end of buffer or of input, whichever is lower
+ count = sfx->total_length - ch->pos;
+ count = bound(0, count, partialend - ltime);
+ if (count)
+ {
+ SND_PaintChannel (ch, count);
+ ch->pos += count;
+ ltime += count;
+ }
- for (i=0 ; i<count ; i++)
- {
- paintbuffer[i].left += (*sfx++ * leftvol) >> 16;
- paintbuffer[i].right += (*sfx++ * rightvol) >> 16;
+ // if at end of sfx, loop or stop the channel
+ if (ch->pos >= (int)sfx->total_length)
+ {
+ if (sfx->loopstart < sfx->total_length)
+ ch->pos = sfx->loopstart;
+ else if (ch->flags & CHANNELFLAG_FORCELOOP)
+ ch->pos = 0;
+ else
+ {
+ S_StopChannel (ch - channels);
+ break;
+ }
+ }
+ }
}
- }
- else
- {
- sfx = (signed short *)sb->data + ch->pos - sb->offset;
- for (i=0 ; i<count ; i++)
+ S_CaptureAVISound (partialend - paintedtime);
+ framecount = S_TransferPaintBuffer (rb, paintedtime, partialend);
+ paintedtime += framecount;
+
+ // If there was not enough free space in the sound buffer, stop here
+ if (paintedtime != partialend)
{
- paintbuffer[i].left += (*sfx * leftvol) >> 16;
- paintbuffer[i].right += (*sfx++ * rightvol) >> 16;
+ Con_DPrintf(">> S_PaintChannels: Not enough free space in the sound buffer ( %u != %u)\n", paintedtime, partialend);
+ break;
}
}
-
- ch->pos += count;
- return true;
}
-