add ALSA support
authortaniwha <taniwha@d7cf8633-e32d-0410-b094-e92efae38249>
Sat, 16 Sep 2000 19:53:55 +0000 (19:53 +0000)
committertaniwha <taniwha@d7cf8633-e32d-0410-b094-e92efae38249>
Sat, 16 Sep 2000 19:53:55 +0000 (19:53 +0000)
git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@31 d7cf8633-e32d-0410-b094-e92efae38249

makefile
snd_alsa.c [new file with mode: 0644]

index e878223..8563f13 100644 (file)
--- a/makefile
+++ b/makefile
@@ -1,10 +1,12 @@
-OBJECTS= cd_linux.o chase.o cl_demo.o cl_input.o cl_main.o cl_parse.o cl_tent.o cmd.o common.o console.o cpu_noasm.o crc.o cvar.o fractalnoise.o gl_draw.o gl_poly.o gl_refrag.o gl_rmain.o gl_rmisc.o gl_rsurf.o gl_screen.o gl_warp.o host.o host_cmd.o image.o keys.o mathlib.o menu.o model_alias.o model_brush.o model_shared.o model_sprite.o net_bsd.o net_udp.o net_dgrm.o net_loop.o net_main.o net_vcr.o pr_cmds.o pr_edict.o pr_exec.o r_light.o r_part.o sbar.o snd_dma.o snd_mem.o snd_mix.o snd_linux.o sv_main.o sv_move.o sv_phys.o sv_user.o sys_linux.o transform.o view.o wad.o world.o zone.o vid_shared.o
+SND=snd_alsa.o
+OBJECTS= cd_linux.o chase.o cl_demo.o cl_input.o cl_main.o cl_parse.o cl_tent.o cmd.o common.o console.o cpu_noasm.o crc.o cvar.o fractalnoise.o gl_draw.o gl_poly.o gl_refrag.o gl_rmain.o gl_rmisc.o gl_rsurf.o gl_screen.o gl_warp.o host.o host_cmd.o image.o keys.o mathlib.o menu.o model_alias.o model_brush.o model_shared.o model_sprite.o net_bsd.o net_udp.o net_dgrm.o net_loop.o net_main.o net_vcr.o pr_cmds.o pr_edict.o pr_exec.o r_light.o r_part.o sbar.o snd_dma.o snd_mem.o snd_mix.o $(SND) sv_main.o sv_move.o sv_phys.o sv_user.o sys_linux.o transform.o view.o wad.o world.o zone.o vid_shared.o
 
 OPTIMIZATIONS= -O6 -ffast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations
 
 CFLAGS= -Wall -Werror -I/usr/X11R6/include -I/usr/include/glide $(OPTIMIZATIONS)
 #CFLAGS= -Wall -Werror -I/usr/X11/include -ggdb $(OPTIMIZATIONS)
-LDFLAGS= -L/usr/X11R6/lib -lm -lX11 -lXext -lXIE -lXxf86dga -lXxf86vm -lGL -ldl
+#LDFLAGS= -L/usr/X11R6/lib -lm -lX11 -lXext -lXIE -lXxf86dga -lXxf86vm -lGL -ldl
+LDFLAGS= -L/usr/X11R6/lib -lm -lX11 -lXext -lXIE -lXxf86dga -lXxf86vm -lGL -ldl -lasound
 
 all: darkplaces-glx darkplaces-3dfx
 
diff --git a/snd_alsa.c b/snd_alsa.c
new file mode 100644 (file)
index 0000000..3f95758
--- /dev/null
@@ -0,0 +1,302 @@
+/*
+       snd_alsa.c
+
+       (description)
+
+       Copyright (C) 1999,2000  contributors of the QuakeForge project
+       Please see the file "AUTHORS" for a list of contributors
+
+       This program is free software; you can redistribute it and/or
+       modify it under the terms of the GNU General Public License
+       as published by the Free Software Foundation; either version 2
+       of the License, or (at your option) any later version.
+
+       This program is distributed in the hope that it will be useful,
+       but WITHOUT ANY WARRANTY; without even the implied warranty of
+       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+       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:
+
+               Free Software Foundation, Inc.
+               59 Temple Place - Suite 330
+               Boston, MA  02111-1307, USA
+
+       $Id$
+*/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "quakedef.h"
+
+#include <sys/soundcard.h>
+#include <linux/soundcard.h>
+#include <sys/asoundlib.h>
+
+#ifndef MAP_FAILED
+# define MAP_FAILED ((void*)-1)
+#endif
+
+extern int soundtime;
+
+static int snd_inited;
+
+static snd_pcm_t *pcm_handle;
+static struct snd_pcm_channel_info cinfo;
+static struct snd_pcm_channel_params params;
+static struct snd_pcm_channel_setup setup;
+static snd_pcm_mmap_control_t *mmap_control = NULL;
+static char *mmap_data = NULL;
+static int card=-1,dev=-1;
+
+int check_card(int card)
+{
+       snd_ctl_t *handle;
+       snd_ctl_hw_info_t info;
+       int rc;
+
+       if ((rc = snd_ctl_open(&handle, card)) < 0) {
+               Con_Printf("Error: control open (%i): %s\n", card, snd_strerror(rc));
+               return rc;
+       }
+       if ((rc = snd_ctl_hw_info(handle, &info)) < 0) {
+               Con_Printf("Error: control hardware info (%i): %s\n", card,
+                                  snd_strerror(rc));
+               snd_ctl_close(handle);
+               return rc;
+       }
+       snd_ctl_close(handle);
+       if (dev==-1) {
+               for (dev = 0; dev < info.pcmdevs; dev++) {
+                       if ((rc=snd_pcm_open(&pcm_handle,card,dev,
+                                                                SND_PCM_OPEN_PLAYBACK
+                                                                | SND_PCM_OPEN_NONBLOCK))==0) {
+                               return 0;
+                       }
+               }
+       } else {
+               if (dev>=0 && dev <info.pcmdevs) {
+                       if ((rc=snd_pcm_open(&pcm_handle,card,dev,
+                                                                SND_PCM_OPEN_PLAYBACK
+                                                                | SND_PCM_OPEN_NONBLOCK))==0) {
+                               return 0;
+                       }
+               }
+       }
+       return 1;
+}
+
+qboolean SNDDMA_Init(void)
+{
+       int rc=0,i;
+       char *err_msg="";
+       int rate,format,bps,stereo,frag_size;
+       unsigned int mask;
+
+       mask = snd_cards_mask();
+       if (!mask) {
+               Con_Printf("No sound cards detected\n");
+               return 0;
+       }
+       if ((i=COM_CheckParm("-sndcard"))!=0) {
+               card=atoi(com_argv[i+1]);
+       }
+       if ((i=COM_CheckParm("-snddev"))!=0) {
+               dev=atoi(com_argv[i+1]);
+       }
+       if (card==-1) {
+               for (card=0; card<SND_CARDS; card++) {
+                       if (!(mask & (1<<card)))
+                               continue;
+                       rc=check_card(card);
+                       if (rc<0)
+                               return 0;
+                       if (!rc)
+                               goto dev_openned;
+               }
+       } else {
+               if (dev==-1) {
+                       rc=check_card(card);
+                       if (rc<0)
+                               return 0;
+                       if (!rc)
+                               goto dev_openned;
+               } else {
+                       if ((rc=snd_pcm_open(&pcm_handle,card,dev,
+                                                                SND_PCM_OPEN_PLAYBACK
+                                                                | SND_PCM_OPEN_NONBLOCK))<0) {
+                               Con_Printf("Error: audio open error: %s\n", snd_strerror(rc));
+                               return 0;
+                       }
+                       goto dev_openned;
+               }
+       }
+       Con_Printf("Error: audio open error: %s\n", snd_strerror(rc));
+       return 0;
+
+ dev_openned:
+       Con_Printf("Using card %d, device %d.\n", card, dev);
+       memset(&cinfo, 0, sizeof(cinfo));
+       cinfo.channel = SND_PCM_CHANNEL_PLAYBACK;
+       snd_pcm_channel_info(pcm_handle, &cinfo);
+       Con_Printf("%08x %08x %08x\n",cinfo.flags,cinfo.formats,cinfo.rates);
+       if (cinfo.rates & SND_PCM_RATE_44100) {
+               rate=44100;
+               frag_size=512;  /* assuming stereo 8 bit */
+       } else if (cinfo.rates & SND_PCM_RATE_22050) {
+               rate=22050;
+               frag_size=256;  /* assuming stereo 8 bit */
+       } else if (cinfo.rates & SND_PCM_RATE_11025) {
+               rate=11025;
+               frag_size=128;  /* assuming stereo 8 bit */
+       } else {
+               Con_Printf("ALSA: desired rates not supported\n");
+               goto error_2;
+       }
+       if (cinfo.formats & SND_PCM_FMT_S16_LE) {
+               format=SND_PCM_SFMT_S16_LE;
+               bps=16;
+               frag_size*=2;
+       } else if (cinfo.formats & SND_PCM_FMT_U8) {
+               format=SND_PCM_SFMT_U8;
+               bps=8;
+       } else {
+               Con_Printf("ALSA: desired formats not supported\n");
+               goto error_2;
+       }
+       if (cinfo.max_voices>=2) {
+               stereo=1;
+       } else {
+               stereo=0;
+               frag_size/=2;
+       }
+
+//     err_msg="audio flush";
+//     if ((rc=snd_pcm_channel_flush(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
+//             goto error;
+       err_msg="audio munmap";
+       if ((rc=snd_pcm_munmap(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
+               goto error;
+
+       memset(&params, 0, sizeof(params));
+       params.channel = SND_PCM_CHANNEL_PLAYBACK;
+       params.mode = SND_PCM_MODE_BLOCK;
+       params.format.interleave=1;
+       params.format.format=format;
+       params.format.rate=rate;
+       params.format.voices=stereo+1;
+       params.start_mode = SND_PCM_START_GO;
+       params.stop_mode = SND_PCM_STOP_ROLLOVER;
+       params.buf.block.frag_size=frag_size;
+       params.buf.block.frags_min=1;
+       params.buf.block.frags_max=-1;
+//     err_msg="audio flush";
+//     if ((rc=snd_pcm_channel_flush(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
+//             goto error;
+       err_msg="audio params";
+       if ((rc=snd_pcm_channel_params(pcm_handle, &params))<0)
+               goto error;
+
+       err_msg="audio mmap";
+       if ((rc=snd_pcm_mmap(pcm_handle, SND_PCM_CHANNEL_PLAYBACK, &mmap_control, (void **)&mmap_data))<0)
+               goto error;
+       err_msg="audio prepare";
+       if ((rc=snd_pcm_plugin_prepare(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0)
+               goto error;
+
+       memset(&setup, 0, sizeof(setup));
+       setup.mode = SND_PCM_MODE_BLOCK;
+       setup.channel = SND_PCM_CHANNEL_PLAYBACK;
+       err_msg="audio setup";
+       if ((rc=snd_pcm_channel_setup(pcm_handle, &setup))<0)
+               goto error;
+
+       shm=&sn;
+       memset((dma_t*)shm,0,sizeof(*shm));
+    shm->splitbuffer = 0;
+       shm->channels=setup.format.voices;
+       shm->submission_chunk=128;                                      // don't mix less than this #
+       shm->samplepos=0;                                                       // in mono samples
+       shm->samplebits=setup.format.format==SND_PCM_SFMT_S16_LE?16:8;
+       shm->samples=setup.buf.block.frags*setup.buf.block.frag_size/(shm->samplebits/8);       // mono samples in buffer
+       shm->speed=setup.format.rate;
+       shm->buffer=(unsigned char*)mmap_data;
+    Con_Printf("%5d stereo\n", shm->channels - 1);
+    Con_Printf("%5d samples\n", shm->samples);
+    Con_Printf("%5d samplepos\n", shm->samplepos);
+    Con_Printf("%5d samplebits\n", shm->samplebits);
+    Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
+    Con_Printf("%5d speed\n", shm->speed);
+    Con_Printf("0x%x dma buffer\n", (int)shm->buffer);
+       Con_Printf("%5d total_channels\n", total_channels);
+
+       snd_inited=1;
+       return 1;
+ error:
+       Con_Printf("Error: %s: %s\n", err_msg, snd_strerror(rc));
+ error_2:
+       snd_pcm_close(pcm_handle);
+       return 0;
+}
+
+int SNDDMA_GetDMAPos(void)
+{
+       if (!snd_inited) return 0;
+       shm->samplepos=(mmap_control->status.frag_io+1)*setup.buf.block.frag_size/(shm->samplebits/8);
+       return shm->samplepos;
+}
+
+void SNDDMA_Shutdown(void)
+{
+       if (snd_inited)
+       {
+               snd_pcm_close(pcm_handle);
+               snd_inited = 0;
+       }
+}
+
+/*
+==============
+SNDDMA_Submit
+
+Send sound to device if buffer isn't really the dma buffer
+===============
+*/
+void SNDDMA_Submit(void)
+{
+       int count=paintedtime-soundtime;
+       int i,s,e;
+       int rc;
+
+       count+=setup.buf.block.frag_size-1;
+       count/=setup.buf.block.frag_size;
+       s=soundtime/setup.buf.block.frag_size;
+       e=s+count;
+       for (i=s; i<e; i++)
+               mmap_control->fragments[i % setup.buf.block.frags].data=1;
+       switch (mmap_control->status.status) {
+       case SND_PCM_STATUS_PREPARED:
+               if ((rc=snd_pcm_channel_go(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0) {
+                       fprintf(stderr, "unable to start playback. %s\n",
+                                       snd_strerror(rc));
+                       exit(1);
+               }
+               break;
+       case SND_PCM_STATUS_RUNNING:
+               break;
+       case SND_PCM_STATUS_UNDERRUN:
+               if ((rc=snd_pcm_plugin_prepare(pcm_handle, SND_PCM_CHANNEL_PLAYBACK))<0) {
+                       fprintf(stderr, "underrun: playback channel prepare error. %s\n",
+                                       snd_strerror(rc));
+                       exit(1);
+               }
+               break;
+       default:
+               break;
+       }
+}
+