Retire snd_mix.c and incorporate it into the SDL backend
This commit is contained in:
Yamagi Burmeister
parent
35ba5b0de1
commit
3989ff73b2
1
Makefile
1
Makefile
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@ -550,7 +550,6 @@ CLIENT_OBJS_ := \
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src/client/sound/snd_al.o \
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src/client/sound/snd_dma.o \
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src/client/sound/snd_mem.o \
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src/client/sound/snd_mix.o \
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src/client/sound/snd_vorbis.o \
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src/client/sound/snd_wav.o \
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src/common/argproc.o \
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@ -30,6 +30,7 @@
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* =======================================================================
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*/
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/* SDL includes */
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#ifdef _WIN32
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#include <SDL/SDL.h>
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#elif defined(__APPLE__)
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@ -38,18 +39,404 @@
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#include <SDL.h>
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#endif
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/* Local includes */
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#include "../../client/header/client.h"
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#include "../../client/sound/header/local.h"
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/* Defines */
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#define SDL_PAINTBUFFER_SIZE 2048
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#define SDL_FULLVOLUME 80
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#define SDL_LOOPATTENUATE 0.003
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/* Global stuff */
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int snd_inited = 0;
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/* Globals */
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cvar_t *s_sdldriver;
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int *snd_p;
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static dma_t *dmabackend;
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static portable_samplepair_t paintbuffer[SDL_PAINTBUFFER_SIZE];
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static int dmapos = 0;
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static int dmasize = 0;
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static dma_t *dmabackend;
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cvar_t *s_sdldriver;
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static int snd_inited = 0;
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static int snd_scaletable[32][256];
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static int snd_vol;
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/* ------------------------------------------------------------------ */
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/*
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* Transfers a mixed "paint buffer" to
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* the SDL output buffer and places it
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* at the appropriate position.
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*/
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void
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SDL_TransferPaintBuffer(int endtime)
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{
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int i;
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int lpos;
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int ls_paintedtime;
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int out_idx;
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int count;
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int out_mask;
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int *p;
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int snd_linear_count;
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int step;
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int val;
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short *snd_out;
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unsigned char *pbuf;
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pbuf = dma.buffer;
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if (s_testsound->value)
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{
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int i;
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int count;
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/* write a fixed sine wave */
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count = (endtime - paintedtime);
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for (i = 0; i < count; i++)
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{
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paintbuffer[i].left = paintbuffer[i].right =
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(int)((float)sin((paintedtime + i) * 0.1f) * 20000 * 256);
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}
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}
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if ((dma.samplebits == 16) && (dma.channels == 2))
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{
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snd_p = (int *)paintbuffer;
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ls_paintedtime = paintedtime;
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while (ls_paintedtime < endtime)
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{
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lpos = ls_paintedtime & ((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 (ls_paintedtime + snd_linear_count > endtime)
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{
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snd_linear_count = endtime - ls_paintedtime;
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}
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snd_linear_count <<= 1;
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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)
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{
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snd_out[i] = 0x7fff;
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}
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else if (val < -32768)
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{
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snd_out[i] = -32768;
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}
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else
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{
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snd_out[i] = val;
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}
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val = snd_p[i + 1] >> 8;
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if (val > 0x7fff)
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{
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snd_out[i + 1] = 0x7fff;
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}
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else if (val < -32768)
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{
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snd_out[i + 1] = -32768;
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}
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else
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{
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snd_out[i + 1] = val;
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}
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}
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snd_p += snd_linear_count;
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ls_paintedtime += (snd_linear_count >> 1);
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}
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}
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else
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{
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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)
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{
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val = 0x7fff;
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}
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else if (val < -32768)
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{
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val = -32768;
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}
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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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unsigned char *out = (unsigned char *)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)
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{
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val = 0x7fff;
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}
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else if (val < -32768)
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{
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val = -32768;
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}
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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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}
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}
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}
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/*
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* Mixes an 8 bit sample into a channel.
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*/
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void
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SDL_PaintChannelFrom8(channel_t *ch, sfxcache_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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unsigned char *sfx;
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int i;
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portable_samplepair_t *samp;
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if (ch->leftvol > 255)
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{
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ch->leftvol = 255;
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}
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if (ch->rightvol > 255)
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{
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ch->rightvol = 255;
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}
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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 = sc->data + 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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}
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ch->pos += count;
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}
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/*
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* Mixes an 16 bit sample into a channel
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*/
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void
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SDL_PaintChannelFrom16(channel_t *ch, sfxcache_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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int i;
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portable_samplepair_t *samp;
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leftvol = ch->leftvol * snd_vol;
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rightvol = ch->rightvol * snd_vol;
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sfx = (signed short *)sc->data + 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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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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}
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ch->pos += count;
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}
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/*
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* Mixes all pending sounds into
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* the available output channels.
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*/
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void
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SDL_PaintChannels(int endtime)
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{
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int i;
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int end;
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channel_t *ch;
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sfxcache_t *sc;
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int ltime, count;
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playsound_t *ps;
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snd_vol = (int)(s_volume->value * 256);
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while (paintedtime < endtime)
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{
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/* if paintbuffer is smaller than DMA buffer */
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end = endtime;
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if (endtime - paintedtime > SDL_PAINTBUFFER_SIZE)
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{
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end = paintedtime + SDL_PAINTBUFFER_SIZE;
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}
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/* start any playsounds */
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for ( ; ; )
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{
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ps = s_pendingplays.next;
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if (ps == NULL)
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{
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break;
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}
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if (ps == &s_pendingplays)
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{
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break; /* no more pending sounds */
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}
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if (ps->begin <= paintedtime)
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{
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S_IssuePlaysound(ps);
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continue;
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}
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if (ps->begin < end)
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{
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end = ps->begin; /* stop here */
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}
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break;
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}
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/* clear the paint buffer */
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if (s_rawend < paintedtime)
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{
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memset(paintbuffer, 0, (end - paintedtime)
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* sizeof(portable_samplepair_t));
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}
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else
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{
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/* copy from the streaming sound source */
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int s;
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int stop;
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stop = (end < s_rawend) ? end : s_rawend;
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for (i = paintedtime; i < stop; i++)
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{
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s = i & (MAX_RAW_SAMPLES - 1);
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paintbuffer[i - paintedtime] = s_rawsamples[s];
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}
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for ( ; i < end; i++)
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{
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memset(&paintbuffer[i - paintedtime], 0,
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sizeof(paintbuffer[i - paintedtime]));
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}
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}
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/* paint in the channels. */
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ch = channels;
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for (i = 0; i < s_numchannels; i++, ch++)
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{
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ltime = paintedtime;
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while (ltime < end)
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{
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if (!ch->sfx || (!ch->leftvol && !ch->rightvol))
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{
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break;
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}
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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)
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{
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count = ch->end - ltime;
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}
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sc = S_LoadSound(ch->sfx);
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if (!sc)
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{
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break;
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}
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if ((count > 0) && ch->sfx)
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{
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if (sc->width == 1)
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{
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SDL_PaintChannelFrom8(ch, sc, count, ltime - paintedtime);
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}
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else
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{
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SDL_PaintChannelFrom16(ch, sc, count, ltime - paintedtime);
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}
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ltime += count;
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}
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/* if at end of loop, restart */
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if (ltime >= ch->end)
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{
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if (ch->autosound)
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{
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/* autolooping sounds always go back to start */
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ch->pos = 0;
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ch->end = ltime + sc->length;
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}
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else if (sc->loopstart >= 0)
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{
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ch->pos = sc->loopstart;
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ch->end = ltime + sc->length - ch->pos;
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}
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else
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{
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/* channel just stopped */
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ch->sfx = NULL;
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}
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}
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}
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}
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/* transfer out according to DMA format */
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SDL_TransferPaintBuffer(end);
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paintedtime = end;
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}
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}
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/* ------------------------------------------------------------------ */
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@ -375,6 +762,38 @@ SDL_UpdateSoundtime(void)
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soundtime = buffers * fullsamples + dmapos / dma.channels;
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}
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/*
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* Updates the volume scale table
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* based on current volume setting.
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*/
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void
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SDL_UpdateScaletable(void)
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{
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int i, j;
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int scale;
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if (s_volume->value > 2.0f)
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{
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Cvar_Set("s_volume", "2");
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}
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else if (s_volume->value < 0)
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{
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Cvar_Set("s_volume", "0");
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}
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s_volume->modified = false;
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for (i = 0; i < 32; i++)
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{
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scale = (int)(i * 8 * 256 * s_volume->value);
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for (j = 0; j < 256; j++)
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{
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snd_scaletable[i][j] = ((j < 128) ? j : j - 0xff) * scale;
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}
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}
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}
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/* ------------------------------------------------------------------ */
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/*
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@ -581,10 +1000,9 @@ SDL_BackendInit(void)
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dmabackend->speed = obtained.freq;
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dmasize = (dmabackend->samples * (dmabackend->samplebits / 8));
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dmabackend->buffer = calloc(1, dmasize);
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s_numchannels = MAX_CHANNELS;
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S_InitScaletable();
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SDL_UpdateScaletable();
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SDL_PauseAudio(0);
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Com_Printf("SDL audio initialized.\n");
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@ -170,10 +170,10 @@ extern cvar_t *s_testsound;
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extern cvar_t *s_ambient;
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wavinfo_t GetWavinfo(char *name, byte *wav, int wavlength);
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void S_InitScaletable(void);
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void SDL_UpdateScaletable(void);
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sfxcache_t *S_LoadSound(sfx_t *s);
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void S_IssuePlaysound(playsound_t *ps);
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void S_PaintChannels(int endtime);
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void SDL_PaintChannels(int endtime);
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/* picks a channel based on priorities, empty slots, number of channels */
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channel_t *S_PickChannel(int entnum, int entchannel);
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|
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@ -1016,7 +1016,7 @@ S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
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/* rebuild scale tables if volume is modified */
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if (s_volume->modified)
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{
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S_InitScaletable();
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SDL_UpdateScaletable();
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}
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/* update spatialization for dynamic sounds */
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@ -1112,7 +1112,7 @@ S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
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endtime = soundtime + samps;
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}
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S_PaintChannels(endtime);
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SDL_PaintChannels(endtime);
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SDL_Submit();
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}
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|
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@ -1,427 +0,0 @@
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/*
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* Copyright (C) 1997-2001 Id Software, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
|
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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||||
* See the GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*
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* =======================================================================
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*
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* This code mixes two or more sound samples into one. It also
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* implements the calls to sample rate changing and per channel extraction.
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* It's called by the upper level sound framework, snd_dma.c
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*
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* =======================================================================
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*/
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#include "../header/client.h"
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#include "header/local.h"
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#define PAINTBUFFER_SIZE 2048
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|
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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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void
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S_TransferPaintBuffer(int endtime)
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{
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int i;
|
||||
int lpos;
|
||||
int ls_paintedtime;
|
||||
int out_idx;
|
||||
int count;
|
||||
int out_mask;
|
||||
int *p;
|
||||
int step;
|
||||
int val;
|
||||
unsigned char *pbuf;
|
||||
|
||||
pbuf = dma.buffer;
|
||||
|
||||
if (s_testsound->value)
|
||||
{
|
||||
int i;
|
||||
int count;
|
||||
|
||||
/* write a fixed sine wave */
|
||||
count = (endtime - paintedtime);
|
||||
|
||||
for (i = 0; i < count; i++)
|
||||
{
|
||||
paintbuffer[i].left = paintbuffer[i].right =
|
||||
(int)((float)sin((paintedtime + i) * 0.1f) * 20000 * 256);
|
||||
}
|
||||
}
|
||||
|
||||
if ((dma.samplebits == 16) && (dma.channels == 2))
|
||||
{
|
||||
snd_p = (int *)paintbuffer;
|
||||
ls_paintedtime = paintedtime;
|
||||
|
||||
while (ls_paintedtime < endtime)
|
||||
{
|
||||
lpos = ls_paintedtime & ((dma.samples >> 1) - 1);
|
||||
|
||||
snd_out = (short *)pbuf + (lpos << 1);
|
||||
|
||||
snd_linear_count = (dma.samples >> 1) - lpos;
|
||||
|
||||
if (ls_paintedtime + snd_linear_count > endtime)
|
||||
{
|
||||
snd_linear_count = endtime - ls_paintedtime;
|
||||
}
|
||||
|
||||
snd_linear_count <<= 1;
|
||||
|
||||
for (i = 0; i < snd_linear_count; i += 2)
|
||||
{
|
||||
val = snd_p[i] >> 8;
|
||||
|
||||
if (val > 0x7fff)
|
||||
{
|
||||
snd_out[i] = 0x7fff;
|
||||
}
|
||||
else if (val < -32768)
|
||||
{
|
||||
snd_out[i] = -32768;
|
||||
}
|
||||
else
|
||||
{
|
||||
snd_out[i] = val;
|
||||
}
|
||||
|
||||
val = snd_p[i + 1] >> 8;
|
||||
|
||||
if (val > 0x7fff)
|
||||
{
|
||||
snd_out[i + 1] = 0x7fff;
|
||||
}
|
||||
else if (val < -32768)
|
||||
{
|
||||
snd_out[i + 1] = -32768;
|
||||
}
|
||||
else
|
||||
{
|
||||
snd_out[i + 1] = val;
|
||||
}
|
||||
}
|
||||
|
||||
snd_p += snd_linear_count;
|
||||
ls_paintedtime += (snd_linear_count >> 1);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
p = (int *)paintbuffer;
|
||||
count = (endtime - paintedtime) * dma.channels;
|
||||
out_mask = dma.samples - 1;
|
||||
out_idx = paintedtime * dma.channels & out_mask;
|
||||
step = 3 - dma.channels;
|
||||
|
||||
if (dma.samplebits == 16)
|
||||
{
|
||||
short *out = (short *)pbuf;
|
||||
|
||||
while (count--)
|
||||
{
|
||||
val = *p >> 8;
|
||||
p += step;
|
||||
|
||||
if (val > 0x7fff)
|
||||
{
|
||||
val = 0x7fff;
|
||||
}
|
||||
|
||||
else if (val < -32768)
|
||||
{
|
||||
val = -32768;
|
||||
}
|
||||
|
||||
out[out_idx] = val;
|
||||
out_idx = (out_idx + 1) & out_mask;
|
||||
}
|
||||
}
|
||||
else if (dma.samplebits == 8)
|
||||
{
|
||||
unsigned char *out = (unsigned char *)pbuf;
|
||||
|
||||
while (count--)
|
||||
{
|
||||
val = *p >> 8;
|
||||
p += step;
|
||||
|
||||
if (val > 0x7fff)
|
||||
{
|
||||
val = 0x7fff;
|
||||
}
|
||||
|
||||
else if (val < -32768)
|
||||
{
|
||||
val = -32768;
|
||||
}
|
||||
|
||||
out[out_idx] = (val >> 8) + 128;
|
||||
out_idx = (out_idx + 1) & out_mask;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
S_PaintChannelFrom8(channel_t *ch, sfxcache_t *sc, int count, int offset)
|
||||
{
|
||||
int data;
|
||||
int *lscale, *rscale;
|
||||
unsigned char *sfx;
|
||||
int i;
|
||||
portable_samplepair_t *samp;
|
||||
|
||||
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];
|
||||
sfx = sc->data + ch->pos;
|
||||
|
||||
samp = &paintbuffer[offset];
|
||||
|
||||
for (i = 0; i < count; i++, samp++)
|
||||
{
|
||||
data = sfx[i];
|
||||
samp->left += lscale[data];
|
||||
samp->right += rscale[data];
|
||||
}
|
||||
|
||||
ch->pos += count;
|
||||
}
|
||||
|
||||
void
|
||||
S_PaintChannelFrom16(channel_t *ch, sfxcache_t *sc, int count, int offset)
|
||||
{
|
||||
int data;
|
||||
int left, right;
|
||||
int leftvol, rightvol;
|
||||
signed short *sfx;
|
||||
int i;
|
||||
portable_samplepair_t *samp;
|
||||
|
||||
leftvol = ch->leftvol * snd_vol;
|
||||
rightvol = ch->rightvol * snd_vol;
|
||||
sfx = (signed short *)sc->data + ch->pos;
|
||||
|
||||
samp = &paintbuffer[offset];
|
||||
|
||||
for (i = 0; i < count; i++, samp++)
|
||||
{
|
||||
data = sfx[i];
|
||||
left = (data * leftvol) >> 8;
|
||||
right = (data * rightvol) >> 8;
|
||||
samp->left += left;
|
||||
samp->right += right;
|
||||
}
|
||||
|
||||
ch->pos += count;
|
||||
}
|
||||
|
||||
void
|
||||
S_PaintChannels(int endtime)
|
||||
{
|
||||
int i;
|
||||
int end;
|
||||
channel_t *ch;
|
||||
sfxcache_t *sc;
|
||||
int ltime, count;
|
||||
playsound_t *ps;
|
||||
|
||||
snd_vol = (int)(s_volume->value * 256);
|
||||
|
||||
while (paintedtime < endtime)
|
||||
{
|
||||
/* if paintbuffer is smaller than DMA buffer */
|
||||
end = endtime;
|
||||
|
||||
if (endtime - paintedtime > PAINTBUFFER_SIZE)
|
||||
{
|
||||
end = paintedtime + PAINTBUFFER_SIZE;
|
||||
}
|
||||
|
||||
/* start any playsounds */
|
||||
for ( ; ; )
|
||||
{
|
||||
ps = s_pendingplays.next;
|
||||
|
||||
if (ps == NULL)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
if (ps == &s_pendingplays)
|
||||
{
|
||||
break; /* no more pending sounds */
|
||||
}
|
||||
|
||||
if (ps->begin <= paintedtime)
|
||||
{
|
||||
S_IssuePlaysound(ps);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (ps->begin < end)
|
||||
{
|
||||
end = ps->begin; /* stop here */
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
/* clear the paint buffer */
|
||||
if (s_rawend < paintedtime)
|
||||
{
|
||||
memset(paintbuffer, 0,
|
||||
(end - paintedtime) * sizeof(portable_samplepair_t));
|
||||
}
|
||||
else
|
||||
{
|
||||
/* copy from the streaming sound source */
|
||||
int s;
|
||||
int stop;
|
||||
|
||||
stop = (end < s_rawend) ? end : s_rawend;
|
||||
|
||||
for (i = paintedtime; i < stop; i++)
|
||||
{
|
||||
s = i & (MAX_RAW_SAMPLES - 1);
|
||||
paintbuffer[i - paintedtime] = s_rawsamples[s];
|
||||
}
|
||||
|
||||
for ( ; i < end; i++)
|
||||
{
|
||||
memset(&paintbuffer[i - paintedtime], 0,
|
||||
sizeof(paintbuffer[i - paintedtime]));
|
||||
}
|
||||
}
|
||||
|
||||
/* paint in the channels. */
|
||||
ch = channels;
|
||||
|
||||
for (i = 0; i < s_numchannels; i++, ch++)
|
||||
{
|
||||
ltime = paintedtime;
|
||||
|
||||
while (ltime < end)
|
||||
{
|
||||
if (!ch->sfx || (!ch->leftvol && !ch->rightvol))
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
/* max painting is to the end of the buffer */
|
||||
count = end - ltime;
|
||||
|
||||
/* might be stopped by running out of data */
|
||||
if (ch->end - ltime < count)
|
||||
{
|
||||
count = ch->end - ltime;
|
||||
}
|
||||
|
||||
sc = S_LoadSound(ch->sfx);
|
||||
|
||||
if (!sc)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
if ((count > 0) && ch->sfx)
|
||||
{
|
||||
if (sc->width == 1)
|
||||
{
|
||||
S_PaintChannelFrom8(ch, sc, count, ltime - paintedtime);
|
||||
}
|
||||
|
||||
else
|
||||
{
|
||||
S_PaintChannelFrom16(ch, sc, count, ltime - paintedtime);
|
||||
}
|
||||
|
||||
ltime += count;
|
||||
}
|
||||
|
||||
/* if at end of loop, restart */
|
||||
if (ltime >= ch->end)
|
||||
{
|
||||
if (ch->autosound)
|
||||
{
|
||||
/* autolooping sounds always go back to start */
|
||||
ch->pos = 0;
|
||||
ch->end = ltime + sc->length;
|
||||
}
|
||||
else if (sc->loopstart >= 0)
|
||||
{
|
||||
ch->pos = sc->loopstart;
|
||||
ch->end = ltime + sc->length - ch->pos;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* channel just stopped */
|
||||
ch->sfx = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* transfer out according to DMA format */
|
||||
S_TransferPaintBuffer(end);
|
||||
paintedtime = end;
|
||||
}
|
||||
}
|
||||
|
||||
/* This is called from snd_dma.c */
|
||||
void
|
||||
S_InitScaletable(void)
|
||||
{
|
||||
int i, j;
|
||||
int scale;
|
||||
|
||||
if (s_volume->value > 2.0f)
|
||||
{
|
||||
Cvar_Set("s_volume", "2");
|
||||
}
|
||||
else if (s_volume->value < 0)
|
||||
{
|
||||
Cvar_Set("s_volume", "0");
|
||||
}
|
||||
|
||||
s_volume->modified = false;
|
||||
|
||||
for (i = 0; i < 32; i++)
|
||||
{
|
||||
scale = (int)(i * 8 * 256 * s_volume->value);
|
||||
|
||||
for (j = 0; j < 256; j++)
|
||||
{
|
||||
snd_scaletable[i][j] = ((j < 128) ? j : j - 0xff) * scale;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue