865a5a003d
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@2584 fc73d0e0-1445-4013-8a0c-d673dee63da5
263 lines
6 KiB
C
263 lines
6 KiB
C
#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/shm.h>
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#include <sys/wait.h>
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#include <sys/soundcard.h>
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#include <stdio.h>
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#include "quakedef.h"
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static int tryrates[] = { 11025, 22051, 44100, 8000 };
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static void OSS_SetUnderWater(soundcardinfo_t *sc, qboolean underwater) //simply a stub. Any ideas how to actually implement this properly?
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{
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}
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static unsigned int OSS_GetDMAPos(soundcardinfo_t *sc)
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{
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struct count_info count;
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if (ioctl(sc->audio_fd, SNDCTL_DSP_GETOPTR, &count)==-1)
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{
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perror("/dev/dsp");
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Con_Printf("Uh, sound dead.\n");
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close(sc->audio_fd);
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return 0;
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}
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// shm->samplepos = (count.bytes / (shm->samplebits / 8)) & (shm->samples-1);
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// fprintf(stderr, "%d \r", count.ptr);
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sc->sn.samplepos = count.ptr / (sc->sn.samplebits / 8);
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return sc->sn.samplepos;
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}
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static void OSS_Shutdown(soundcardinfo_t *sc)
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{
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if (sc->sn.buffer) //close it properly, so we can go and restart it later.
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munmap(sc->sn.buffer, sc->sn.samples * (sc->sn.samplebits/8));
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if (sc->audio_fd)
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close(sc->audio_fd);
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*sc->name = '\0';
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}
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static void OSS_Submit(soundcardinfo_t *sc)
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{
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}
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static void *OSS_Lock(soundcardinfo_t *sc)
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{
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return sc->sn.buffer;
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}
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static void OSS_Unlock(soundcardinfo_t *sc, void *buffer)
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{
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}
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static int OSS_InitCard(soundcardinfo_t *sc, int cardnum)
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{ //FIXME: implement snd_multipledevices somehow.
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int rc;
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int fmt;
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int tmp;
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int i;
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struct audio_buf_info info;
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int caps;
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char *snddev = NULL;
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cvar_t *devname;
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devname = Cvar_Get(va("snd_devicename%i", cardnum+1), cardnum?"":"/dev/dsp", 0, "Sound controls");
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snddev = devname->string;
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if (!*snddev)
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return 2;
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sc->inactive_sound = true; //linux sound devices always play sound, even when we're not the active app...
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// open the sound device, confirm capability to mmap, and get size of dma buffer
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Con_Printf("Initing OSS sound device %s\n", snddev);
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sc->audio_fd = open(snddev, O_RDWR | O_NONBLOCK); //try the primary device
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if (sc->audio_fd < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not open %s\n", snddev);
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OSS_Shutdown(sc);
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return 0;
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}
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Q_strncpyz(sc->name, snddev, sizeof(sc->name));
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rc = ioctl(sc->audio_fd, SNDCTL_DSP_RESET, 0);
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if (rc < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not reset %s\n", snddev);
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OSS_Shutdown(sc);
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return 0;
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}
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if (ioctl(sc->audio_fd, SNDCTL_DSP_GETCAPS, &caps)==-1)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Sound driver too old\n");
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OSS_Shutdown(sc);
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return 0;
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}
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if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP))
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{
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Con_Printf(S_ERROR "OSS: Sorry but your soundcard can't do this\n");
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OSS_Shutdown(sc);
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return 0;
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}
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if (ioctl(sc->audio_fd, SNDCTL_DSP_GETOSPACE, &info)==-1)
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{
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perror("GETOSPACE");
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Con_Printf(S_ERROR "OSS: Um, can't do GETOSPACE?\n");
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OSS_Shutdown(sc);
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return 0;
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}
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// set sample bits & speed
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ioctl(sc->audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
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if (!(fmt & AFMT_S16_LE) && sc->sn.samplebits > 8)
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sc->sn.samplebits = 8;
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else if (!(fmt & AFMT_U8))
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{
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Con_Printf(S_ERROR "OSS: No needed sample formats supported\n");
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OSS_Shutdown(sc);
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return 0;
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}
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//use the default - menu set value.
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if (ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &sc->sn.speed))
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{ //humph, default didn't work. Go for random preset ones that should work.
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for (i=0 ; i<sizeof(tryrates)/4 ; i++)
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if (!ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &tryrates[i])) break;
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if (i == (sizeof(tryrates)/4))
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Failed to obtain a suitable rate\n");
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OSS_Shutdown(sc);
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return 0;
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}
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sc->sn.speed = tryrates[i];
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}
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if (sc->sn.samples > (info.fragstotal * info.fragsize * 4))
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{
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Con_Printf(S_NOTICE "OSS: Enabling bigfoot's mmap hack! Hope you know what you're doing!\n");
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sc->sn.samples = info.fragstotal * info.fragsize * 4;
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}
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sc->sn.samples = info.fragstotal * info.fragsize;
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// memory map the dma buffer
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sc->sn.buffer = (unsigned char *) mmap(NULL, sc->sn.samples, PROT_WRITE, MAP_FILE|MAP_SHARED, sc->audio_fd, 0);
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if (!sc->sn.buffer)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not mmap %s\n", snddev);
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OSS_Shutdown(sc);
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return 0;
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}
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sc->sn.samples /= (sc->sn.samplebits/8);
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tmp = 0;
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if (sc->sn.numchannels == 2)
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tmp = 1;
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rc = ioctl(sc->audio_fd, SNDCTL_DSP_STEREO, &tmp);
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if (rc < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not set %s to stereo=%d\n", snddev, sc->sn.numchannels);
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OSS_Shutdown(sc);
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return 0;
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}
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if (tmp)
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sc->sn.numchannels = 2;
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else
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sc->sn.numchannels = 1;
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rc = ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &sc->sn.speed);
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if (rc < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not set %s speed to %d\n", snddev, sc->sn.speed);
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OSS_Shutdown(sc);
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return 0;
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}
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if (sc->sn.samplebits == 16)
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{
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rc = AFMT_S16_LE;
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rc = ioctl(sc->audio_fd, SNDCTL_DSP_SETFMT, &rc);
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if (rc < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not support 16-bit data. Try 8-bit.\n");
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OSS_Shutdown(sc);
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return 0;
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}
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}
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else if (sc->sn.samplebits == 8)
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{
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rc = AFMT_U8;
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rc = ioctl(sc->audio_fd, SNDCTL_DSP_SETFMT, &rc);
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if (rc < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not support 8-bit data.\n");
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OSS_Shutdown(sc);
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return 0;
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}
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}
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else
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: %d-bit sound not supported.\n", sc->sn.samplebits);
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OSS_Shutdown(sc);
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return 0;
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}
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// toggle the trigger & start her up
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tmp = 0;
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rc = ioctl(sc->audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
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if (rc < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not toggle.\n");
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OSS_Shutdown(sc);
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return 0;
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}
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tmp = PCM_ENABLE_OUTPUT;
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rc = ioctl(sc->audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
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if (rc < 0)
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{
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perror(snddev);
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Con_Printf(S_ERROR "OSS: Could not toggle.\n");
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OSS_Shutdown(sc);
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return 0;
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}
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sc->sn.samplepos = 0;
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sc->Lock = OSS_Lock;
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sc->Unlock = OSS_Unlock;
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sc->SetWaterDistortion = OSS_SetUnderWater;
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sc->Submit = OSS_Submit;
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sc->Shutdown = OSS_Shutdown;
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sc->GetDMAPos = OSS_GetDMAPos;
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return 1;
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}
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int (*pOSS_InitCard) (soundcardinfo_t *sc, int cardnum) = &OSS_InitCard;
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