2010-04-21 22:00:00 +02:00
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//=======================================================================
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// Copyright XashXT Group 2009 <20>
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// s_mix.c - portable code to mix sounds
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//=======================================================================
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2009-10-02 22:00:00 +02:00
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#include "sound.h"
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2010-07-21 22:00:00 +02:00
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#include "byteorder.h"
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2009-10-02 22:00:00 +02:00
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2010-06-28 22:00:00 +02:00
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#define PAINTBUFFER_SIZE 512
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2009-10-11 22:00:00 +02:00
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portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE];
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int snd_scaletable[32][256];
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int *snd_p, snd_linear_count, snd_vol;
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short *snd_out;
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2009-10-02 22:00:00 +02:00
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void S_WriteLinearBlastStereo16( void )
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{
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int i, val;
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for( i = 0; i < snd_linear_count; i += 2 )
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{
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val = snd_p[i]>>8;
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if( val > 0x7fff ) snd_out[i] = 0x7fff;
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else if( val < (short)0x8000 )
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snd_out[i] = (short)0x8000;
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else snd_out[i] = val;
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val = snd_p[i+1]>>8;
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if( val > 0x7fff ) snd_out[i+1] = 0x7fff;
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else if( val < (short)0x8000 )
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snd_out[i+1] = (short)0x8000;
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else snd_out[i+1] = val;
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}
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}
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2010-06-27 22:00:00 +02:00
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void S_TransferStereo16( dword *pbuf, int endtime )
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2009-10-02 22:00:00 +02:00
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{
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int lpos, lpaintedtime;
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2009-10-11 22:00:00 +02:00
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snd_p = (int *)paintbuffer;
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2009-10-02 22:00:00 +02:00
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lpaintedtime = paintedtime;
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while( lpaintedtime < endtime )
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{
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// handle recirculating buffer issues
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lpos = lpaintedtime & ((dma.samples >> 1) - 1);
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snd_out = (short *) pbuf + (lpos << 1);
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snd_linear_count = (dma.samples>>1) - lpos;
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if( lpaintedtime + snd_linear_count > endtime )
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snd_linear_count = endtime - lpaintedtime;
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snd_linear_count <<= 1;
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// write a linear blast of samples
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S_WriteLinearBlastStereo16();
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snd_p += snd_linear_count;
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lpaintedtime += (snd_linear_count >> 1);
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}
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}
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/*
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===================
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S_TransferPaintBuffer
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===================
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*/
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void S_TransferPaintBuffer( int endtime )
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{
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int out_idx, count;
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int step, val;
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int *p, out_mask;
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dword *pbuf;
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pbuf = (dword *)dma.buffer;
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2009-10-11 22:00:00 +02:00
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if( dma.samplebits == 16 && dma.channels == 2 )
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{
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// optimized case
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S_TransferStereo16( pbuf, endtime );
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}
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else
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{
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// general case
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p = (int *)paintbuffer;
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count = (endtime - paintedtime) * dma.channels;
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out_mask = dma.samples - 1;
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out_idx = paintedtime * dma.channels & out_mask;
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step = 3 - dma.channels;
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if( dma.samplebits == 16 )
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{
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short *out = (short *)pbuf;
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while( count-- )
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{
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val = *p >> 8;
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p += step;
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if( val > 0x7fff ) val = 0x7fff;
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else if( val < (short)0x8000 )
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val = (short)0x8000;
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out[out_idx] = val;
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out_idx = (out_idx + 1) & out_mask;
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}
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}
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else if( dma.samplebits == 8 )
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{
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byte *out = (byte *)pbuf;
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2010-06-27 22:00:00 +02:00
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while( count-- )
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{
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val = *p >> 8;
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p += step;
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if( val > 0x7fff ) val = 0x7fff;
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else if( val < (short)0x8000 )
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val = (short)0x8000;
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out[out_idx] = (val>>8) + 128;
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out_idx = (out_idx + 1) & out_mask;
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}
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2009-10-02 22:00:00 +02:00
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}
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}
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}
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/*
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===============================================================================
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CHANNEL MIXING
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===============================================================================
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*/
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void S_PaintChannelFrom8( channel_t *ch, wavdata_t *sc, int count, int offset )
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{
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int data;
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int *lscale, *rscale;
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byte *sfx;
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portable_samplepair_t *samp;
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int i;
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2010-04-24 22:00:00 +02:00
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if( ch->leftvol > 255 ) ch->leftvol = 255;
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if( ch->rightvol > 255 ) ch->rightvol = 255;
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lscale = snd_scaletable[ch->leftvol>>3];
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rscale = snd_scaletable[ch->rightvol>>3];
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sfx = (signed char *)sc->buffer + ch->pos;
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samp = &paintbuffer[offset];
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for( i = 0; i < count; i++, samp++ )
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{
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data = sfx[i];
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samp->left += lscale[data];
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samp->right += rscale[data];
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2009-10-02 22:00:00 +02:00
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}
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ch->pos += count;
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}
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2010-07-21 22:00:00 +02:00
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void S_PaintStereoFrom8( channel_t *ch, wavdata_t *sc, int count, int offset )
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{
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int *lscale, *rscale;
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uint left, right;
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unsigned short *data;
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portable_samplepair_t *samp;
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int i;
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if( ch->leftvol > 255 ) ch->leftvol = 255;
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if( ch->rightvol > 255 ) ch->rightvol = 255;
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lscale = snd_scaletable[ch->leftvol>>3];
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rscale = snd_scaletable[ch->rightvol>>3];
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data = (unsigned short *)sc->buffer + ch->pos;
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samp = &paintbuffer[offset];
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for( i = 0; i < count; i++, samp++, data++ )
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{
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left = (byte)((*data & 0x00FF));
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right = (byte)((*data & 0xFF00) >> 8);
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samp->left += lscale[left];
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samp->right += rscale[right];
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}
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ch->pos += count;
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}
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2010-06-27 22:00:00 +02:00
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void S_PaintChannelFrom16( channel_t *ch, wavdata_t *sc, int count, int offset )
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{
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int data;
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int left, right;
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int leftvol, rightvol;
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signed short *sfx;
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portable_samplepair_t *samp;
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int i;
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leftvol = ch->leftvol * snd_vol;
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rightvol = ch->rightvol * snd_vol;
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2010-04-20 22:00:00 +02:00
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sfx = (signed short *)sc->buffer + ch->pos;
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2010-06-27 22:00:00 +02:00
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samp = &paintbuffer[offset];
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for( i = 0; i < count; i++, samp++ )
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{
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data = sfx[i];
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left = ( data * leftvol ) >> 8;
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right = (data * rightvol) >> 8;
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samp->left += left;
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samp->right += right;
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2009-10-02 22:00:00 +02:00
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}
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ch->pos += count;
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}
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2010-07-21 22:00:00 +02:00
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void S_PaintStereoFrom16( channel_t *ch, wavdata_t *sc, int count, int offset )
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{
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uint *data;
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int leftvol, rightvol;
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int left, right;
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portable_samplepair_t *samp;
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int i;
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data = (uint *)sc->buffer + ch->pos;
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samp = &paintbuffer[offset];
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leftvol = ch->leftvol * snd_vol;
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rightvol = ch->rightvol * snd_vol;
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for( i = 0; i < count; i++, samp++, data++ )
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{
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left = (signed short)((*data & 0x0000FFFF));
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right = (signed short)((*data & 0xFFFF0000) >> 16);
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left = (left * leftvol ) >> 8;
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right = (right * rightvol) >> 8;
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samp->left += left;
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samp->right += right;
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}
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ch->pos += count;
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}
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2009-10-11 22:00:00 +02:00
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void S_MixAllChannels( int endtime, int end )
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{
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channel_t *ch;
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wavdata_t *sc;
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int i, count = 0;
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int ltime;
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2009-10-11 22:00:00 +02:00
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// paint in the channels.
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for( i = 0, ch = channels; i < total_channels; i++, ch++ )
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{
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2010-04-21 22:00:00 +02:00
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if( !ch->sfx ) continue;
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2010-06-30 22:00:00 +02:00
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if( !ch->leftvol && !ch->rightvol && !ch->isSentence )
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{
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// sentences must be playing even if not hearing
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continue;
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}
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2010-06-28 22:00:00 +02:00
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2010-04-21 22:00:00 +02:00
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sc = S_LoadSound( ch->sfx );
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if( !sc ) continue;
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2010-07-24 22:00:00 +02:00
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if( s_listener.inmenu && !ch->localsound )
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{
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// play only local sounds, keep pause for other
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ch->end = paintedtime + sc->samples - ch->pos;
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continue;
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}
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else if( !s_listener.inmenu && !s_listener.active && !ch->staticsound )
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{
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// play only ambient sounds, keep pause for other
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ch->end = paintedtime + sc->samples - ch->pos;
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continue;
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}
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else if( s_listener.paused )
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{
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// play only ambient sounds, keep pause for other
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ch->end = paintedtime + sc->samples - ch->pos;
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continue;
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}
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2009-10-11 22:00:00 +02:00
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ltime = paintedtime;
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while( ltime < end )
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{
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2010-06-27 22:00:00 +02:00
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// max painting is to the end of the buffer
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count = end - ltime;
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// might be stopped by running out of data
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if( ch->end - ltime < count ) count = ch->end - ltime;
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if( count > 0 )
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{
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if( sc->channels == 1 )
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{
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if( sc->width == 1 )
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S_PaintChannelFrom8( ch, sc, count, ltime - paintedtime );
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else S_PaintChannelFrom16( ch, sc, count, ltime - paintedtime );
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|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if( sc->width == 1 )
|
|
|
|
|
S_PaintStereoFrom8( ch, sc, count, ltime - paintedtime );
|
|
|
|
|
else S_PaintStereoFrom16( ch, sc, count, ltime - paintedtime );
|
|
|
|
|
}
|
2009-10-11 22:00:00 +02:00
|
|
|
|
ltime += count;
|
|
|
|
|
}
|
|
|
|
|
|
2010-06-27 22:00:00 +02:00
|
|
|
|
if( si.GetClientEdict( ch->entnum ) && ( ch->entchannel == CHAN_VOICE ))
|
|
|
|
|
{
|
2010-06-28 22:00:00 +02:00
|
|
|
|
SND_MoveMouth8( ch, sc, count );
|
2010-06-27 22:00:00 +02:00
|
|
|
|
}
|
|
|
|
|
|
2009-10-11 22:00:00 +02:00
|
|
|
|
// if at end of loop, restart
|
|
|
|
|
if( ltime >= ch->end )
|
|
|
|
|
{
|
2010-06-27 22:00:00 +02:00
|
|
|
|
if( ch->isSentence )
|
|
|
|
|
{
|
2010-06-28 22:00:00 +02:00
|
|
|
|
sc = VOX_LoadNextWord( ch );
|
|
|
|
|
if( !sc ) break; // sentence is finished
|
2010-06-27 22:00:00 +02:00
|
|
|
|
}
|
|
|
|
|
else if( sc->loopStart >= 0 && ch->use_loop )
|
2009-10-11 22:00:00 +02:00
|
|
|
|
{
|
2010-04-20 22:00:00 +02:00
|
|
|
|
ch->pos = sc->loopStart;
|
|
|
|
|
ch->end = ltime + sc->samples - ch->pos;
|
2009-10-11 22:00:00 +02:00
|
|
|
|
}
|
2010-04-21 22:00:00 +02:00
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
// channel just stopped
|
2010-06-28 22:00:00 +02:00
|
|
|
|
S_FreeChannel( ch );
|
2010-04-21 22:00:00 +02:00
|
|
|
|
break;
|
|
|
|
|
}
|
2009-10-11 22:00:00 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
2009-10-10 22:00:00 +02:00
|
|
|
|
|
2009-10-11 22:00:00 +02:00
|
|
|
|
void S_PaintChannels( int endtime )
|
|
|
|
|
{
|
2010-04-21 22:00:00 +02:00
|
|
|
|
int end;
|
2009-10-11 22:00:00 +02:00
|
|
|
|
|
2009-12-06 22:00:00 +01:00
|
|
|
|
snd_vol = S_GetMasterVolume () * 256;
|
2009-10-10 22:00:00 +02:00
|
|
|
|
|
2009-10-02 22:00:00 +02:00
|
|
|
|
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
|
2010-06-27 22:00:00 +02:00
|
|
|
|
if( s_rawend < paintedtime )
|
2009-10-02 22:00:00 +02:00
|
|
|
|
{
|
2009-10-11 22:00:00 +02:00
|
|
|
|
Mem_Set( paintbuffer, 0, (end - paintedtime) * sizeof( portable_samplepair_t ));
|
2009-10-02 22:00:00 +02:00
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
2010-04-21 22:00:00 +02:00
|
|
|
|
int i, stop;
|
2009-10-02 22:00:00 +02:00
|
|
|
|
|
|
|
|
|
// copy from the streaming sound source
|
2010-06-27 22:00:00 +02:00
|
|
|
|
stop = (end < s_rawend) ? end : s_rawend;
|
2009-10-02 22:00:00 +02:00
|
|
|
|
|
|
|
|
|
for( i = paintedtime; i < stop; i++ )
|
2010-06-27 22:00:00 +02:00
|
|
|
|
paintbuffer[i - paintedtime] = s_rawsamples[i & (MAX_RAW_SAMPLES - 1)];
|
2009-10-02 22:00:00 +02:00
|
|
|
|
|
|
|
|
|
for( ; i < end; i++ )
|
|
|
|
|
paintbuffer[i-paintedtime].left = paintbuffer[i-paintedtime].right = 0;
|
|
|
|
|
}
|
|
|
|
|
|
2009-10-11 22:00:00 +02:00
|
|
|
|
S_MixAllChannels( endtime, end );
|
2009-10-02 22:00:00 +02:00
|
|
|
|
|
2010-06-27 22:00:00 +02:00
|
|
|
|
// SX_RoomFX( endtime, true, true );
|
2009-10-10 22:00:00 +02:00
|
|
|
|
|
2009-10-02 22:00:00 +02:00
|
|
|
|
// transfer out according to DMA format
|
|
|
|
|
S_TransferPaintBuffer( end );
|
|
|
|
|
paintedtime = end;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2010-06-27 22:00:00 +02:00
|
|
|
|
void S_InitScaletable( void )
|
2009-10-02 22:00:00 +02:00
|
|
|
|
{
|
|
|
|
|
int i, j;
|
2009-10-11 22:00:00 +02:00
|
|
|
|
int scale;
|
2009-10-02 22:00:00 +02:00
|
|
|
|
|
2009-10-11 22:00:00 +02:00
|
|
|
|
for( i = 0; i < 32; i++ )
|
|
|
|
|
{
|
2009-12-06 22:00:00 +01:00
|
|
|
|
scale = i * 8 * 256 * S_GetMasterVolume();
|
2010-06-27 22:00:00 +02:00
|
|
|
|
for( j = 0; j < 256; j++ ) snd_scaletable[i][j] = ((signed char)j) * scale;
|
2009-10-11 22:00:00 +02:00
|
|
|
|
}
|
2010-06-27 22:00:00 +02:00
|
|
|
|
s_volume->modified = false;
|
2009-10-11 22:00:00 +02:00
|
|
|
|
}
|