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.
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
#include <sys/mman.h>
#include <sys/shm.h>
#include <sys/wait.h>
-#include <linux/soundcard.h>
+#include <sys/soundcard.h>
#include <stdio.h>
#include "quakedef.h"
int audio_fd;
int snd_inited;
-static int tryrates[] = { 11025, 22051, 44100, 8000 };
+static int tryrates[] = {44100, 22050, 11025, 8000};
qboolean SNDDMA_Init(void)
{
-
int rc;
- int fmt;
+ int fmt;
int tmp;
- int i;
- char *s;
+ int i;
+ char *s;
struct audio_buf_info info;
int caps;
+ int format16bit;
+#if BYTE_ORDER == BIG_ENDIAN
+ format16bit = AFMT_S16_BE;
+#else
+ format16bit = AFMT_S16_LE;
+#endif
snd_inited = 0;
-// open /dev/dsp, confirm capability to mmap, and get size of dma buffer
-
+ // open /dev/dsp, confirm capability to mmap, and get size of dma buffer
audio_fd = open("/dev/dsp", O_RDWR);
- if (audio_fd < 0)
+ if (audio_fd < 0)
{
perror("/dev/dsp");
- Con_Printf("Could not open /dev/dsp\n");
+ Con_Print("Could not open /dev/dsp\n");
return 0;
}
- rc = ioctl(audio_fd, SNDCTL_DSP_RESET, 0);
- if (rc < 0)
+ if (ioctl(audio_fd, SNDCTL_DSP_RESET, 0) < 0)
{
perror("/dev/dsp");
- Con_Printf("Could not reset /dev/dsp\n");
+ Con_Print("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");
+ Con_Print("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");
+ Con_Print("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");
+ if (ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &info)==-1)
+ {
+ perror("GETOSPACE");
+ Con_Print("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);
+ // set sample bits & speed
+ s = getenv("QUAKE_SOUND_SAMPLEBITS");
+ if (s)
+ shm->format.width = atoi(s) / 8;
+// COMMANDLINEOPTION: -sndbits <bits> chooses 8 bit or 16 bit sound output
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;
+ shm->format.width = atoi(com_argv[i+1]) / 8;
+
+ if (shm->format.width != 2 && shm->format.width != 1)
+ {
+ ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
+ if (fmt & format16bit)
+ shm->format.width = 2;
+ else if (fmt & AFMT_U8)
+ shm->format.width = 1;
}
- s = getenv("QUAKE_SOUND_SPEED");
- if (s) shm->speed = atoi(s);
+ s = getenv("QUAKE_SOUND_SPEED");
+ if (s)
+ shm->format.speed = atoi(s);
+// COMMANDLINEOPTION: -sndspeed <hz> chooses 44100 hz, 22100 hz, or 11025 hz sound output rate
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];
+ shm->format.speed = atoi(com_argv[i+1]);
+ else
+ {
+ for (i = 0;i < (int) sizeof(tryrates) / 4;i++)
+ if (!ioctl(audio_fd, SNDCTL_DSP_SPEED, &tryrates[i]))
+ break;
+
+ shm->format.speed = tryrates[i];
}
- s = getenv("QUAKE_SOUND_CHANNELS");
- if (s) shm->channels = atoi(s);
+ s = getenv("QUAKE_SOUND_CHANNELS");
+ if (s)
+ shm->format.channels = atoi(s);
+// COMMANDLINEOPTION: -sndmono sets sound output to mono
else if ((i = COM_CheckParm("-sndmono")) != 0)
- shm->channels = 1;
+ shm->format.channels = 1;
+// COMMANDLINEOPTION: -sndstereo sets sound output to stereo
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;
+ shm->format.channels = 2;
+ else
+ shm->format.channels = 2;
-// memory map the dma buffer
+ shm->samples = info.fragstotal * info.fragsize / shm->format.width;
- shm->buffer = (unsigned char *) mmap(NULL, info.fragstotal
- * info.fragsize, PROT_WRITE, MAP_FILE|MAP_SHARED, audio_fd, 0);
+ // memory map the dma buffer
+ shm->bufferlength = info.fragstotal * info.fragsize;
+ shm->buffer = (unsigned char *) mmap(NULL, shm->bufferlength, PROT_READ|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");
+ Con_Print("Could not mmap /dev/dsp\n");
close(audio_fd);
return 0;
}
tmp = 0;
- if (shm->channels == 2)
+ if (shm->format.channels == 2)
tmp = 1;
- rc = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
- if (rc < 0)
- {
+
+ 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);
+ Con_Printf("Could not set /dev/dsp to stereo=%d\n", shm->format.channels);
close(audio_fd);
- return 0;
- }
+ return 0;
+ }
if (tmp)
- shm->channels = 2;
+ shm->format.channels = 2;
else
- shm->channels = 1;
+ shm->format.channels = 1;
- rc = ioctl(audio_fd, SNDCTL_DSP_SPEED, &shm->speed);
- if (rc < 0)
- {
+ rc = ioctl(audio_fd, SNDCTL_DSP_SPEED, &shm->format.speed);
+ if (rc < 0)
+ {
perror("/dev/dsp");
- Con_Printf("Could not set /dev/dsp speed to %d", shm->speed);
+ Con_Printf("Could not set /dev/dsp speed to %d\n", shm->format.speed);
close(audio_fd);
- return 0;
- }
+ return 0;
+ }
- if (shm->samplebits == 16)
- {
- rc = AFMT_S16_LE;
- rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc);
- if (rc < 0)
+ if (shm->format.width == 2)
+ {
+ rc = format16bit;
+ 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");
+ Con_Print("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)
+ }
+ else if (shm->format.width == 1)
+ {
+ 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");
+ Con_Print("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);
+ Con_Printf("%d-bit sound not supported.\n", shm->format.width * 8);
close(audio_fd);
return 0;
}
-// toggle the trigger & start her up
-
- tmp = 0;
- rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
+ // 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");
+ Con_Print("Could not toggle.\n");
close(audio_fd);
return 0;
}
- tmp = PCM_ENABLE_OUTPUT;
- rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
+ tmp = PCM_ENABLE_OUTPUT;
+ rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
if (rc < 0)
{
perror("/dev/dsp");
- Con_Printf("Could not toggle.\n");
+ Con_Print("Could not toggle.\n");
close(audio_fd);
return 0;
}
snd_inited = 1;
return 1;
-
}
int SNDDMA_GetDMAPos(void)
if (ioctl(audio_fd, SNDCTL_DSP_GETOPTR, &count)==-1)
{
perror("/dev/dsp");
- Con_Printf("Uh, sound dead.\n");
+ Con_Print("Uh, sound dead.\n");
close(audio_fd);
snd_inited = 0;
return 0;
}
-// shm->samplepos = (count.bytes / (shm->samplebits / 8)) & (shm->samples-1);
-// Qprintf(stderr, "%d \r", count.ptr);
- shm->samplepos = count.ptr / (shm->samplebits / 8);
+ shm->samplepos = count.ptr / shm->format.width;
return shm->samplepos;
-
}
void SNDDMA_Shutdown(void)
{
+ int tmp;
if (snd_inited)
{
+ // unmap the memory
+ munmap(shm->buffer, shm->bufferlength);
+ // stop the sound
+ tmp = 0;
+ ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
+ ioctl(audio_fd, SNDCTL_DSP_RESET, 0);
+ // close the device
close(audio_fd);
+ audio_fd = -1;
snd_inited = 0;
}
}
{
}
+void *S_LockBuffer(void)
+{
+ return shm->buffer;
+}
+
+void S_UnlockBuffer(void)
+{
+}
+
projects / xonotic / darkplaces.git / blobdiff