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mpv/stream/tvi_bsdbt848.c

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/*
* *BSD (hopefully, requires working driver!) BrookTree capture support.
*
* Still in (active) development!
*
* v1.1 Mar 13 2002 Fully functional, need to move ring buffer to
* the kernel driver.
* v1.0 Feb 19 2002 First Release, need to add support for changing
* audio parameters.
*
* Copyright (C) 2002 Charles R. Henrich (henrich@msu.edu)
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#define RINGSIZE 8
#define FRAGSIZE 4096 /* (2^12 see SETFRAGSIZE below) */
#define TRUE (1==1)
#define FALSE (1==0)
#define PAL_WIDTH 768
#define PAL_HEIGHT 576
#define PAL_FPS 25
#define NTSC_WIDTH 640
#define NTSC_HEIGHT 480
#define NTSC_FPS 29.97
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/filio.h>
#include <sys/time.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
#include <sys/param.h>
#ifdef CONFIG_SUN_AUDIO
#include <sys/audioio.h>
#endif
#ifdef IOCTL_METEOR_H_NAME
#include IOCTL_METEOR_H_NAME
#endif
#ifdef IOCTL_BT848_H_NAME
#include IOCTL_BT848_H_NAME
#endif
#ifdef HAVE_SYS_SOUNDCARD_H
#include <sys/soundcard.h>
#else
#ifdef HAVE_SOUNDCARD_H
#include <soundcard.h>
#else
#include <machine/soundcard.h>
#endif
#endif
#include "libaf/af_format.h"
#include "libmpcodecs/img_format.h"
#include "tv.h"
#include "help_mp.h"
#include "mp_msg.h"
static tvi_handle_t *tvi_init_bsdbt848(tv_param_t* tv_param);
/* information about this file */
const tvi_info_t tvi_info_bsdbt848 = {
tvi_init_bsdbt848,
"Brooktree848 Support",
"bsdbt848",
"Charles Henrich",
"in development"
};
typedef struct {
int dirty;
double timestamp;
char *buf;
} RBFRAME;
/* private data's */
typedef struct {
/* Audio */
char *dspdev;
int dspready;
int dspfd;
int dspsamplesize;
int dspstereo;
int dspspeed;
int dspfmt;
int dspframesize;
int dsprate;
long long dspbytesread;
/* Video */
char *btdev;
int videoready;
int btfd;
int source;
float maxfps;
float fps;
int iformat;
int maxheight;
int maxwidth;
struct meteor_geomet geom;
struct meteor_capframe capframe;
/* Frame Buffer */
int framebufsize;
float timestamp;
int curpaintframe;
int curbufframe;
unsigned char *livebuf;
RBFRAME framebuf[RINGSIZE];
/* Inputs */
int input;
/* Tuner */
char *tunerdev;
int tunerfd;
int tunerready;
u_long tunerfreq;
struct bktr_chnlset cset;
/* Other */
int immediatemode;
double starttime;
tv_param_t *tv_param;
} priv_t;
#include "tvi_def.h"
static priv_t *G_private=NULL;
static int getinput(int innumber);
static void processframe(int signal)
{
struct timeval curtime;
if(G_private->immediatemode == TRUE) return;
gettimeofday(&curtime, NULL);
if(G_private->framebuf[G_private->curpaintframe].dirty == TRUE)
{
memcpy(G_private->framebuf[G_private->curpaintframe].buf,
G_private->livebuf, G_private->framebufsize);
G_private->framebuf[G_private->curpaintframe].dirty = FALSE;
G_private->framebuf[G_private->curpaintframe].timestamp =
curtime.tv_sec + curtime.tv_usec*.000001;
G_private->curpaintframe++;
if(G_private->curpaintframe >= RINGSIZE) G_private->curpaintframe = 0;
}
return;
}
/* handler creator - entry point ! */
static tvi_handle_t *tvi_init_bsdbt848(tv_param_t* tv_param)
{
char* sep ;
tvi_handle_t* tvh;
priv_t* priv;
tvh=new_handle();
if(!tvh)
return NULL;
priv=(priv_t*)tvh->priv;
/*
if user needs to specify both /dev/bktr<n> and /dev/tuner<n>
it can do this with "-tv device=/dev/bktr1,/dev/tuner1"
*/
/* set video device name */
if (!tv_param->device){
priv->btdev = strdup("/dev/bktr0");
priv->tunerdev = strdup("/dev/tuner0");
}else{
sep = strchr(tv_param->device,',');
priv->btdev = strdup(tv_param->device);
if(sep){
// tuner device is also passed
priv->tunerdev = strdup(sep+1);
priv->btdev[sep - tv_param->device] = 0;
}else{
priv->tunerdev = strdup("/dev/tuner0");
}
}
/* set audio device name */
if (!tv_param->adevice)
#ifdef CONFIG_SUN_AUDIO
priv->dspdev = strdup("/dev/sound");
#else
priv->dspdev = strdup("/dev/dsp");
#endif
else
priv->dspdev = strdup(tv_param->adevice);
priv->tv_param=tv_param;
return tvh;
}
static int control(priv_t *priv, int cmd, void *arg)
{
switch(cmd)
{
/* Tuner Controls */
case TVI_CONTROL_IS_TUNER:
if(priv->tunerready == FALSE) return TVI_CONTROL_FALSE;
return TVI_CONTROL_TRUE;
case TVI_CONTROL_TUN_GET_FREQ:
{
if(ioctl(priv->tunerfd, TVTUNER_GETFREQ, &priv->tunerfreq) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "TVTUNER_GETFREQ", strerror(errno));
return TVI_CONTROL_FALSE;
}
*(int *)arg = priv->tunerfreq;
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_TUN_SET_FREQ:
{
priv->tunerfreq = *(int *)arg;
if(ioctl(priv->tunerfd, TVTUNER_SETFREQ, &priv->tunerfreq) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "TVTUNER_SETFREQ", strerror(errno));
return 0;
}
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_TUN_GET_SIGNAL:
{
int status;
if(ioctl(priv->tunerfd, TVTUNER_GETSTATUS, &status) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "GETSTATUS", strerror(errno));
return 0;
}
*(int*)arg=(status & 0x02)? 100 : 0;
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_TUN_GET_TUNER:
case TVI_CONTROL_TUN_SET_TUNER:
/* Inputs */
case TVI_CONTROL_SPC_GET_INPUT:
{
if(ioctl(priv->btfd, METEORGINPUT, &priv->input) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORGINPUT", strerror(errno));
return TVI_CONTROL_FALSE;
}
*(int *)arg = priv->input;
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_SPC_SET_INPUT:
{
priv->input = getinput(*(int *)arg);
if(ioctl(priv->btfd, METEORSINPUT, &priv->input) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSINPUT", strerror(errno));
return 0;
}
return TVI_CONTROL_TRUE;
}
/* Audio Controls */
case TVI_CONTROL_IS_AUDIO:
if(priv->dspready == FALSE) return TVI_CONTROL_FALSE;
return TVI_CONTROL_TRUE;
case TVI_CONTROL_AUD_GET_FORMAT:
{
*(int *)arg = AF_FORMAT_S16_LE;
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_AUD_GET_CHANNELS:
{
*(int *)arg = 2;
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_AUD_SET_SAMPLERATE:
{
int dspspeed = *(int *)arg;
if(ioctl(priv->dspfd, SNDCTL_DSP_SPEED, &dspspeed) == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848InvalidAudioRate, strerror(errno));
return TVI_CONTROL_FALSE;
}
priv->dspspeed = dspspeed;
priv->dspframesize = priv->dspspeed*priv->dspsamplesize/8/
priv->fps * (priv->dspstereo+1);
priv->dsprate = priv->dspspeed * priv->dspsamplesize/8*
(priv->dspstereo+1);
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_AUD_GET_SAMPLERATE:
{
*(int *)arg = priv->dspspeed;
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_AUD_GET_SAMPLESIZE:
{
*(int *)arg = priv->dspsamplesize/8;
return TVI_CONTROL_TRUE;
}
/* Video Controls */
case TVI_CONTROL_IS_VIDEO:
if(priv->videoready == FALSE) return TVI_CONTROL_FALSE;
return TVI_CONTROL_TRUE;
case TVI_CONTROL_TUN_SET_NORM:
{
int req_mode = *(int *)arg;
u_short tmp_fps;
priv->iformat = METEOR_FMT_AUTOMODE;
if(req_mode == TV_NORM_PAL)
{
priv->iformat = METEOR_FMT_PAL;
priv->maxheight = PAL_HEIGHT;
priv->maxwidth = PAL_WIDTH;
priv->maxfps = PAL_FPS;
priv->fps = PAL_FPS;
if(priv->fps > priv->maxfps) priv->fps = priv->maxfps;
if(priv->geom.rows > priv->maxheight)
{
priv->geom.rows = priv->maxheight;
}
if(priv->geom.columns > priv->maxwidth)
{
priv->geom.columns = priv->maxwidth;
}
}
if(req_mode == TV_NORM_NTSC)
{
priv->iformat = METEOR_FMT_NTSC;
priv->maxheight = NTSC_HEIGHT;
priv->maxwidth = NTSC_WIDTH;
priv->maxfps = NTSC_FPS;
priv->fps = NTSC_FPS;
priv->dspframesize = priv->dspspeed*priv->dspsamplesize/8/
priv->fps * (priv->dspstereo+1);
priv->dsprate = priv->dspspeed * priv->dspsamplesize/8 *
(priv->dspstereo+1);
if(priv->fps > priv->maxfps) priv->fps = priv->maxfps;
if(priv->geom.rows > priv->maxheight)
{
priv->geom.rows = priv->maxheight;
}
if(priv->geom.columns > priv->maxwidth)
{
priv->geom.columns = priv->maxwidth;
}
}
if(req_mode == TV_NORM_SECAM) priv->iformat = METEOR_FMT_SECAM;
if(ioctl(priv->btfd, METEORSFMT, &priv->iformat) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSFMT", strerror(errno));
return TVI_CONTROL_FALSE;
}
if(ioctl(priv->btfd, METEORSETGEO, &priv->geom) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSETGEO", strerror(errno));
return 0;
}
tmp_fps = priv->fps;
if(ioctl(priv->btfd, METEORSFPS, &tmp_fps) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSFPS", strerror(errno));
return 0;
}
#ifdef BT848_SAUDIO
if(priv->tunerready == TRUE &&
ioctl(priv->tunerfd, BT848_SAUDIO, &priv->tv_param->audio_id) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "BT848_SAUDIO", strerror(errno));
}
#endif
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_VID_GET_FORMAT:
*(int *)arg = IMGFMT_UYVY;
return TVI_CONTROL_TRUE;
case TVI_CONTROL_VID_SET_FORMAT:
{
int req_fmt = *(int *)arg;
if(req_fmt != IMGFMT_UYVY) return TVI_CONTROL_FALSE;
return TVI_CONTROL_TRUE;
}
case TVI_CONTROL_VID_SET_WIDTH:
priv->geom.columns = *(int *)arg;
if(priv->geom.columns > priv->maxwidth)
{
priv->geom.columns = priv->maxwidth;
}
if(ioctl(priv->btfd, METEORSETGEO, &priv->geom) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848ErrorSettingWidth, strerror(errno));
return 0;
}
return TVI_CONTROL_TRUE;
case TVI_CONTROL_VID_GET_WIDTH:
*(int *)arg = priv->geom.columns;
return TVI_CONTROL_TRUE;
case TVI_CONTROL_VID_SET_HEIGHT:
priv->geom.rows = *(int *)arg;
if(priv->geom.rows > priv->maxheight)
{
priv->geom.rows = priv->maxheight;
}
if(priv->geom.rows <= priv->maxheight / 2)
{
priv->geom.oformat |= METEOR_GEO_EVEN_ONLY;
}
if(ioctl(priv->btfd, METEORSETGEO, &priv->geom) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848ErrorSettingWidth, strerror(errno));
return 0;
}
return TVI_CONTROL_TRUE;
case TVI_CONTROL_VID_GET_HEIGHT:
*(int *)arg = priv->geom.rows;
return TVI_CONTROL_TRUE;
case TVI_CONTROL_VID_GET_FPS:
*(float *)arg = priv->fps;
return TVI_CONTROL_TRUE;
/*
case TVI_CONTROL_VID_SET_FPS:
priv->fps = *(int *)arg;
if(priv->fps > priv->maxfps) priv->fps = priv->maxfps;
if(ioctl(priv->btfd, METEORSFPS, &priv->fps) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSFPS", strerror(errno));
return 0;
}
return TVI_CONTROL_TRUE;
*/
case TVI_CONTROL_VID_CHK_WIDTH:
case TVI_CONTROL_VID_CHK_HEIGHT:
return TVI_CONTROL_TRUE;
case TVI_CONTROL_IMMEDIATE:
priv->immediatemode = TRUE;
return TVI_CONTROL_TRUE;
}
return TVI_CONTROL_UNKNOWN;
}
static int init(priv_t *priv)
{
int marg;
int count;
u_short tmp_fps;
G_private = priv; /* Oooh, sick */
/* Video Configuration */
priv->videoready = TRUE;
priv->immediatemode = FALSE;
priv->iformat = METEOR_FMT_PAL;
priv->maxheight = PAL_HEIGHT;
priv->maxwidth = PAL_WIDTH;
priv->maxfps = PAL_FPS;
priv->source = METEOR_INPUT_DEV0;
priv->fps = priv->maxfps;
priv->starttime=0;
priv->curpaintframe=0;
priv->curbufframe=0;
priv->geom.columns = priv->maxwidth;
priv->geom.rows = priv->maxheight;
priv->geom.frames = 1;
priv->geom.oformat = METEOR_GEO_YUV_PACKED;
priv->btfd = open(priv->btdev, O_RDONLY);
if(priv->btfd < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848ErrorOpeningBktrDev, strerror(errno));
priv->videoready = FALSE;
}
if(priv->videoready == TRUE &&
ioctl(priv->btfd, METEORSFMT, &priv->iformat) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "SETEORSFMT", strerror(errno));
}
if(priv->videoready == TRUE &&
ioctl(priv->btfd, METEORSINPUT, &priv->source) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSINPUT", strerror(errno));
}
tmp_fps = priv->fps;
if(priv->videoready == TRUE &&
ioctl(priv->btfd, METEORSFPS, &tmp_fps) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSFPS", strerror(errno));
}
if(priv->videoready == TRUE &&
ioctl(priv->btfd, METEORSETGEO, &priv->geom) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSGEQ", strerror(errno));
}
if(priv->videoready == TRUE)
{
priv->framebufsize = (priv->geom.columns * priv->geom.rows * 2);
priv->livebuf = (u_char *)mmap((caddr_t)0, priv->framebufsize, PROT_READ,
MAP_SHARED, priv->btfd, (off_t)0);
if(priv->livebuf == (u_char *) MAP_FAILED)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848MmapFailed, strerror(errno));
priv->videoready = FALSE;
}
for(count=0;count<RINGSIZE;count++)
{
priv->framebuf[count].buf = malloc(priv->framebufsize);
if(priv->framebuf[count].buf == NULL)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848FrameBufAllocFailed, strerror(errno));
priv->videoready = FALSE;
break;
}
priv->framebuf[count].dirty = TRUE;
priv->framebuf[count].timestamp = 0;
}
}
/* Tuner Configuration */
priv->tunerready = TRUE;
priv->tunerfd = open(priv->tunerdev, O_RDONLY);
if(priv->tunerfd < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848ErrorOpeningTunerDev, strerror(errno));
priv->tunerready = FALSE;
}
/* Audio Configuration */
priv->dspready = TRUE;
priv->dspsamplesize = 16;
priv->dspstereo = 1;
priv->dspspeed = 44100;
priv->dspfmt = AFMT_S16_LE;
priv->dspbytesread = 0;
priv->dsprate = priv->dspspeed * priv->dspsamplesize/8*(priv->dspstereo+1);
priv->dspframesize = priv->dspspeed*priv->dspsamplesize/8/priv->fps *
(priv->dspstereo+1);
if((priv->dspfd = open (priv->dspdev, O_RDONLY, 0)) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848ErrorOpeningDspDev, strerror(errno));
priv->dspready = FALSE;
}
marg = (256 << 16) | 12;
if (ioctl(priv->dspfd, SNDCTL_DSP_SETFRAGMENT, &marg ) < 0 )
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "SNDCTL_DSP_SETFRAGMENT", strerror(errno));
priv->dspready = FALSE;
}
if((priv->dspready == TRUE) &&
((ioctl(priv->dspfd, SNDCTL_DSP_SAMPLESIZE, &priv->dspsamplesize) == -1) ||
(ioctl(priv->dspfd, SNDCTL_DSP_STEREO, &priv->dspstereo) == -1) ||
(ioctl(priv->dspfd, SNDCTL_DSP_SPEED, &priv->dspspeed) == -1) ||
(ioctl(priv->dspfd, SNDCTL_DSP_SETFMT, &priv->dspfmt) == -1)))
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848ErrorConfiguringDsp, strerror(errno));
close(priv->dspfd);
priv->dspready = FALSE;
}
return 1;
}
/* that's the real start, we'got the format parameters (checked with control) */
static int start(priv_t *priv)
{
int tmp;
struct timeval curtime;
int marg;
fprintf(stderr,"START\n");
if(priv->videoready == FALSE) return 0;
signal(SIGUSR1, processframe);
signal(SIGALRM, processframe);
marg = SIGUSR1;
if(ioctl(priv->btfd, METEORSSIGNAL, &marg) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSSIGNAL", strerror(errno));
return 0;
}
read(priv->dspfd, &tmp, 2);
gettimeofday(&curtime, NULL);
priv->starttime = curtime.tv_sec + (curtime.tv_usec *.000001);
marg = METEOR_CAP_CONTINOUS;
if(ioctl(priv->btfd, METEORCAPTUR, &marg) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORCAPTUR", strerror(errno));
return 0;
}
return 1;
}
static int uninit(priv_t *priv)
{
int marg;
if(priv->videoready == FALSE) return 0;
marg = METEOR_SIG_MODE_MASK;
if(ioctl( priv->btfd, METEORSSIGNAL, &marg) < 0 )
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "METEORSSIGNAL", strerror(errno));
return 0;
}
marg = METEOR_CAP_STOP_CONT;
if(ioctl(priv->btfd, METEORCAPTUR, &marg) < 0 )
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848UnableToStopCapture, strerror(errno));
return 0;
}
close(priv->btfd);
close(priv->dspfd);
priv->dspfd = -1;
priv->btfd = -1;
priv->dspready = priv->videoready = FALSE;
return 1;
}
static double grabimmediate_video_frame(priv_t *priv, char *buffer, int len)
{
sigset_t sa_mask;
if(priv->videoready == FALSE) return 0;
alarm(1);
sigfillset(&sa_mask);
sigdelset(&sa_mask,SIGINT);
sigdelset(&sa_mask,SIGUSR1);
sigdelset(&sa_mask,SIGALRM);
sigsuspend(&sa_mask);
alarm(0);
memcpy(buffer, priv->livebuf, len);
/* PTS = 0, show the frame NOW, this routine is only used in playback mode
without audio capture .. */
return 0;
}
static double grab_video_frame(priv_t *priv, char *buffer, int len)
{
double timestamp=0;
sigset_t sa_mask;
if(priv->videoready == FALSE) return 0;
if(priv->immediatemode == TRUE)
{
return grabimmediate_video_frame(priv, buffer, len);
}
while(priv->framebuf[priv->curbufframe].dirty == TRUE)
{
alarm(1);
sigemptyset(&sa_mask);
sigsuspend(&sa_mask);
alarm(0);
}
memcpy(buffer, priv->framebuf[priv->curbufframe].buf, len);
timestamp = priv->framebuf[priv->curbufframe].timestamp;
priv->framebuf[priv->curbufframe].dirty = TRUE;
priv->curbufframe++;
if(priv->curbufframe >= RINGSIZE) priv->curbufframe = 0;
return timestamp-priv->starttime;
}
static int get_video_framesize(priv_t *priv)
{
return priv->geom.columns * priv->geom.rows * 16 / 8;
}
static double grab_audio_frame(priv_t *priv, char *buffer, int len)
{
struct timeval curtime;
double curpts;
double timeskew;
int bytesread;
int ret;
if(priv->dspready == FALSE) return 0;
gettimeofday(&curtime, NULL);
/* Get exactly one frame of audio, which forces video sync to audio.. */
bytesread=read(priv->dspfd, buffer, len);
while(bytesread < len)
{
ret=read(priv->dspfd, &buffer[bytesread], len-bytesread);
if(ret == -1)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848ErrorReadingAudio, strerror(errno));
return 0;
}
bytesread+=ret;
}
priv->dspbytesread += bytesread;
curpts = curtime.tv_sec + curtime.tv_usec * .000001;
timeskew = priv->dspbytesread * 1.0 / priv->dsprate - (curpts-priv->starttime);
if(timeskew > .125/priv->fps)
{
priv->starttime -= timeskew;
}
else
{
if(timeskew < -.125/priv->fps)
{
priv->starttime -= timeskew;
}
}
return priv->dspbytesread * 1.0 / priv->dsprate;
}
static int get_audio_framesize(priv_t *priv)
{
int bytesavail;
#ifdef CONFIG_SUN_AUDIO
struct audio_info auinf;
#endif
if(priv->dspready == FALSE) return 0;
#ifdef CONFIG_SUN_AUDIO
if(ioctl(priv->dspfd, AUDIO_GETINFO, &auinf) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "AUDIO_GETINFO", strerror(errno));
return TVI_CONTROL_FALSE;
}
else
bytesavail = auinf.record.seek; /* *priv->dspsamplesize; */
#else
if(ioctl(priv->dspfd, FIONREAD, &bytesavail) < 0)
{
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_Bt848IoctlFailed, "FIONREAD", strerror(errno));
return TVI_CONTROL_FALSE;
}
#endif
/* When mencoder wants audio data, it wants data..
it won't go do anything else until it gets it :( */
if(bytesavail == 0) return FRAGSIZE;
return bytesavail;
}
static int getinput(int innumber)
{
switch(innumber)
{
case 0: return METEOR_INPUT_DEV0; /* RCA */
case 1: return METEOR_INPUT_DEV1; /* Tuner */
case 2: return METEOR_INPUT_DEV2; /* In 1 */
case 3: return METEOR_INPUT_DEV3; /* In 2 */
case 4: return METEOR_INPUT_DEV_RGB; /* RGB */
case 5: return METEOR_INPUT_DEV_SVIDEO; /* SVid */
}
return 0;
}
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