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Attempting to fix gb's mmap-related oss4 crash by reordering the entire function. Not tested it, so probably won't compile.

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/branches/wip@3567 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2010-07-28 20:36:54 +00:00
parent c07cef9555
commit 1711a05852
1 changed files with 62 additions and 59 deletions
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121
engine/client/snd_linux.c
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@ -10,7 +10,7 @@
#include <stdio.h> #include <stdio.h>
#include "quakedef.h" #include "quakedef.h"
static int tryrates[] = { 11025, 22051, 44100, 8000 }; static int tryrates[] = { 11025, 22051, 44100, 8000, 48000 };
static void OSS_SetUnderWater(soundcardinfo_t *sc, qboolean underwater) //simply a stub. Any ideas how to actually implement this properly? static void OSS_SetUnderWater(soundcardinfo_t *sc, qboolean underwater) //simply a stub. Any ideas how to actually implement this properly?
{ {
@ -90,6 +90,7 @@ static int OSS_InitCard(soundcardinfo_t *sc, int cardnum)
} }
Q_strncpyz(sc->name, snddev, sizeof(sc->name)); Q_strncpyz(sc->name, snddev, sizeof(sc->name));
//reset it
rc = ioctl(sc->audio_fd, SNDCTL_DSP_RESET, 0); rc = ioctl(sc->audio_fd, SNDCTL_DSP_RESET, 0);
if (rc < 0) if (rc < 0)
{ {
@ -99,6 +100,7 @@ static int OSS_InitCard(soundcardinfo_t *sc, int cardnum)
return 0; return 0;
} }
//check its general capabilities, we need trigger+mmap
if (ioctl(sc->audio_fd, SNDCTL_DSP_GETCAPS, &caps)==-1) if (ioctl(sc->audio_fd, SNDCTL_DSP_GETCAPS, &caps)==-1)
{ {
perror(snddev); perror(snddev);
@ -106,7 +108,6 @@ static int OSS_InitCard(soundcardinfo_t *sc, int cardnum)
OSS_Shutdown(sc); OSS_Shutdown(sc);
return 0; return 0;
} }
if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP)) if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP))
{ {
Con_Printf(CON_ERROR "OSS: Sorry but your soundcard can't do this\n"); Con_Printf(CON_ERROR "OSS: Sorry but your soundcard can't do this\n");
@ -114,61 +115,19 @@ static int OSS_InitCard(soundcardinfo_t *sc, int cardnum)
return 0; return 0;
} }
if (ioctl(sc->audio_fd, SNDCTL_DSP_GETOSPACE, &info)==-1) //choose channels
{ #ifdef SNDCTL_DSP_CHANNELS /*I'm paranoid, okay?*/
perror("GETOSPACE"); tmp = sc->sn.numchannels;
Con_Printf(CON_ERROR "OSS: Um, can't do GETOSPACE?\n"); rc = ioctl(sc->audio_fd, SNDCTL_DSP_CHANNELS, &tmp);
OSS_Shutdown(sc); if (rc < 0)
return 0;
}
// set sample bits & speed
ioctl(sc->audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
if (!(fmt & AFMT_S16_LE) && sc->sn.samplebits > 8)
sc->sn.samplebits = 8; // they asked for 16bit (the default) but their card does not support it
if (!(fmt & AFMT_U8) && sc->sn.samplebits == 8)
{ //their card doesn't support 8bit which we're trying to use.
Con_Printf(CON_ERROR "OSS: No needed sample formats supported\n");
OSS_Shutdown(sc);
return 0;
}
//use the default - menu set value.
if (ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &sc->sn.speed))
{ //humph, default didn't work. Go for random preset ones that should work.
for (i=0 ; i<sizeof(tryrates)/4 ; i++)
if (!ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &tryrates[i])) break;
if (i == (sizeof(tryrates)/4))
{
perror(snddev);
Con_Printf(CON_ERROR "OSS: Failed to obtain a suitable rate\n");
OSS_Shutdown(sc);
return 0;
}
sc->sn.speed = tryrates[i];
}
if (sc->sn.samples > (info.fragstotal * info.fragsize * 4))
{
Con_Printf(CON_NOTICE "OSS: Enabling bigfoot's mmap hack! Hope you know what you're doing!\n");
sc->sn.samples = info.fragstotal * info.fragsize * 4;
}
sc->sn.samples = info.fragstotal * info.fragsize;
// memory map the dma buffer
sc->sn.buffer = (unsigned char *) mmap(NULL, sc->sn.samples, PROT_WRITE, MAP_FILE|MAP_SHARED, sc->audio_fd, 0);
if (!sc->sn.buffer)
{ {
perror(snddev); perror(snddev);
Con_Printf(CON_ERROR "OSS: Could not mmap %s\n", snddev); Con_Printf(CON_ERROR "OSS: Could not set %s to channels=%d\n", snddev, sc->sn.numchannels);
OSS_Shutdown(sc); OSS_Shutdown(sc);
return 0; return 0;
} }
sc->sn.numchannels = tmp;
sc->sn.samples /= (sc->sn.samplebits/8); #else
tmp = 0; tmp = 0;
if (sc->sn.numchannels == 2) if (sc->sn.numchannels == 2)
tmp = 1; tmp = 1;
@ -184,16 +143,19 @@ static int OSS_InitCard(soundcardinfo_t *sc, int cardnum)
sc->sn.numchannels = 2; sc->sn.numchannels = 2;
else else
sc->sn.numchannels = 1; sc->sn.numchannels = 1;
#endif
rc = ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &sc->sn.speed); //choose bits
if (rc < 0) // ask the device what it supports
{ ioctl(sc->audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
perror(snddev); if (!(fmt & AFMT_S16_LE) && sc->sn.samplebits > 8)
Con_Printf(CON_ERROR "OSS: Could not set %s speed to %d\n", snddev, sc->sn.speed); sc->sn.samplebits = 8; // they asked for 16bit (the default) but their card does not support it
if (!(fmt & AFMT_U8) && sc->sn.samplebits == 8)
{ //their card doesn't support 8bit which we're trying to use.
Con_Printf(CON_ERROR "OSS: No needed sample formats supported\n");
OSS_Shutdown(sc); OSS_Shutdown(sc);
return 0; return 0;
} }
if (sc->sn.samplebits == 16) if (sc->sn.samplebits == 16)
{ {
rc = AFMT_S16_LE; rc = AFMT_S16_LE;
@ -226,8 +188,49 @@ static int OSS_InitCard(soundcardinfo_t *sc, int cardnum)
return 0; return 0;
} }
// toggle the trigger & start her up //choose speed
//use the default - menu set value.
tmp = sc->sn.speed;
if (ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &tmp) != 0)
{ //humph, default didn't work. Go for random preset ones that should work.
for (i=0 ; i<sizeof(tryrates)/4 ; i++)
{
tmp = tryrates[i];
if (!ioctl(sc->audio_fd, SNDCTL_DSP_SPEED, &tmp)) break;
}
if (i == (sizeof(tryrates)/4))
{
perror(snddev);
Con_Printf(CON_ERROR "OSS: Failed to obtain a suitable rate\n");
OSS_Shutdown(sc);
return 0;
}
}
sc->sn.speed = tmp;
//figure out buffer size
if (ioctl(sc->audio_fd, SNDCTL_DSP_GETOSPACE, &info)==-1)
{
perror("GETOSPACE");
Con_Printf(CON_ERROR "OSS: Um, can't do GETOSPACE?\n");
OSS_Shutdown(sc);
return 0;
}
sc->sn.samples = info.fragstotal * info.fragsize;
sc->sn.samples /= (sc->sn.samplebits/8);
/*samples is the number of samples*channels */
// memory map the dma buffer
sc->sn.buffer = (unsigned char *) mmap(NULL, sc->sn.samples*(sc->sn.samplebits/8), PROT_WRITE, MAP_FILE|MAP_SHARED, sc->audio_fd, 0);
if (!sc->sn.buffer)
{
perror(snddev);
Con_Printf(CON_ERROR "OSS: Could not mmap %s\n", snddev);
OSS_Shutdown(sc);
return 0;
}
// toggle the trigger & start her up
tmp = 0; tmp = 0;
rc = ioctl(sc->audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp); rc = ioctl(sc->audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp);
if (rc < 0) if (rc < 0)