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Diffstat (limited to 'apps/plugins/sdl/progs/quake/snd_linux.c')
-rw-r--r--apps/plugins/sdl/progs/quake/snd_linux.c269
1 files changed, 269 insertions, 0 deletions
diff --git a/apps/plugins/sdl/progs/quake/snd_linux.c b/apps/plugins/sdl/progs/quake/snd_linux.c
new file mode 100644
index 0000000..4579e40
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/snd_linux.c
@@ -0,0 +1,269 @@
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+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 the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/shm.h>
+#include <sys/wait.h>
+#include <linux/soundcard.h>
+#include <stdio.h>
+#include "quakedef.h"
+
+int audio_fd;
+int snd_inited;
+
+static int tryrates[] = { 11025, 22051, 44100, 8000 };
+
+qboolean SNDDMA_Init(void)
+{
+
+ int rc;
+ int fmt;
+ int tmp;
+ int i;
+ char *s;
+ struct audio_buf_info info;
+ int caps;
+
+ snd_inited = 0;
+
+// open /dev/dsp, confirm capability to mmap, and get size of dma buffer
+
+ audio_fd = open("/dev/dsp", O_RDWR);
+ if (audio_fd < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not open /dev/dsp\n");
+ return 0;
+ }
+
+ rc = ioctl(audio_fd, SNDCTL_DSP_RESET, 0);
+ if (rc < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not reset /dev/dsp\n");
+ close(audio_fd);
+ return 0;
+ }
+
+ if (ioctl(audio_fd, SNDCTL_DSP_GETCAPS, &caps)==-1)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Sound driver too old\n");
+ close(audio_fd);
+ return 0;
+ }
+
+ if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP))
+ {
+ Con_Printf("Sorry but your soundcard can't do this\n");
+ close(audio_fd);
+ return 0;
+ }
+
+ if (ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &info)==-1)
+ {
+ perror("GETOSPACE");
+ Con_Printf("Um, can't do GETOSPACE?\n");
+ close(audio_fd);
+ return 0;
+ }
+
+ shm = &sn;
+ shm->splitbuffer = 0;
+
+// set sample bits & speed
+
+ s = getenv("QUAKE_SOUND_SAMPLEBITS");
+ if (s) shm->samplebits = atoi(s);
+ else if ((i = COM_CheckParm("-sndbits")) != 0)
+ shm->samplebits = atoi(com_argv[i+1]);
+ if (shm->samplebits != 16 && shm->samplebits != 8)
+ {
+ ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
+ if (fmt & AFMT_S16_LE) shm->samplebits = 16;
+ else if (fmt & AFMT_U8) shm->samplebits = 8;
+ }
+
+ s = getenv("QUAKE_SOUND_SPEED");
+ if (s) shm->speed = atoi(s);
+ else if ((i = COM_CheckParm("-sndspeed")) != 0)
+ shm->speed = atoi(com_argv[i+1]);
+ else
+ {
+ for (i=0 ; i<sizeof(tryrates)/4 ; i++)
+ if (!ioctl(audio_fd, SNDCTL_DSP_SPEED, &tryrates[i])) break;
+ shm->speed = tryrates[i];
+ }
+
+ s = getenv("QUAKE_SOUND_CHANNELS");
+ if (s) shm->channels = atoi(s);
+ else if ((i = COM_CheckParm("-sndmono")) != 0)
+ shm->channels = 1;
+ else if ((i = COM_CheckParm("-sndstereo")) != 0)
+ shm->channels = 2;
+ else shm->channels = 2;
+
+ shm->samples = info.fragstotal * info.fragsize / (shm->samplebits/8);
+ shm->submission_chunk = 1;
+
+// memory map the dma buffer
+
+ shm->buffer = (unsigned char *) mmap(NULL, info.fragstotal
+ * info.fragsize, PROT_WRITE, MAP_FILE|MAP_SHARED, audio_fd, 0);
+ if (!shm->buffer || shm->buffer == (unsigned char *)-1)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not mmap /dev/dsp\n");
+ close(audio_fd);
+ return 0;
+ }
+
+ tmp = 0;
+ if (shm->channels == 2)
+ tmp = 1;
+ rc = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
+ if (rc < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not set /dev/dsp to stereo=%d", shm->channels);
+ close(audio_fd);
+ return 0;
+ }
+ if (tmp)
+ shm->channels = 2;
+ else
+ shm->channels = 1;
+
+ rc = ioctl(audio_fd, SNDCTL_DSP_SPEED, &shm->speed);
+ if (rc < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not set /dev/dsp speed to %d", shm->speed);
+ close(audio_fd);
+ return 0;
+ }
+
+ if (shm->samplebits == 16)
+ {
+ rc = AFMT_S16_LE;
+ rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc);
+ if (rc < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not support 16-bit data. Try 8-bit.\n");
+ close(audio_fd);
+ return 0;
+ }
+ }
+ else if (shm->samplebits == 8)
+ {
+ rc = AFMT_U8;
+ rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc);
+ if (rc < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not support 8-bit data.\n");
+ close(audio_fd);
+ return 0;
+ }
+ }
+ else
+ {
+ perror("/dev/dsp");
+ Con_Printf("%d-bit sound not supported.", shm->samplebits);
+ close(audio_fd);
+ return 0;
+ }
+
+// toggle the trigger & start her up
+
+ tmp = 0;
+ rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
+ if (rc < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not toggle.\n");
+ close(audio_fd);
+ return 0;
+ }
+ tmp = PCM_ENABLE_OUTPUT;
+ rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
+ if (rc < 0)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Could not toggle.\n");
+ close(audio_fd);
+ return 0;
+ }
+
+ shm->samplepos = 0;
+
+ snd_inited = 1;
+ return 1;
+
+}
+
+int SNDDMA_GetDMAPos(void)
+{
+
+ struct count_info count;
+
+ if (!snd_inited) return 0;
+
+ if (ioctl(audio_fd, SNDCTL_DSP_GETOPTR, &count)==-1)
+ {
+ perror("/dev/dsp");
+ Con_Printf("Uh, sound dead.\n");
+ close(audio_fd);
+ snd_inited = 0;
+ return 0;
+ }
+// shm->samplepos = (count.bytes / (shm->samplebits / 8)) & (shm->samples-1);
+// fprintf(stderr, "%d \r", count.ptr);
+ shm->samplepos = count.ptr / (shm->samplebits / 8);
+
+ return shm->samplepos;
+
+}
+
+void SNDDMA_Shutdown(void)
+{
+ if (snd_inited)
+ {
+ close(audio_fd);
+ snd_inited = 0;
+ }
+}
+
+/*
+==============
+SNDDMA_Submit
+
+Send sound to device if buffer isn't really the dma buffer
+===============
+*/
+void SNDDMA_Submit(void)
+{
+}
+
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