tvi_bsdbt848.c

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        }
    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 USE_SUN_AUDIO
struct audio_info auinf;
#endif

if(priv->dspready == FALSE) return 0;

#ifdef USE_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;
}