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triple: implement cVideo::getBlank()

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another hack :-) make the "blank" still-mpg 24fps and then check in
getBlank() if the framerate is still 24fps, which means that no video
has been decoded since blanking
This commit is contained in:
Stefan Seyfried
2012-07-14 18:13:55 +02:00
parent 618d1d6525
commit ca32114863
1 changed files with 14 additions and 2 deletions
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16
libtriple/video_td.cpp
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@@ -108,6 +108,11 @@ cVideo::cVideo(int, void *, void *)
free(blank_data[i]); /* don't leak... */
blank_data[i] = NULL;
}
else
{ /* set framerate to 24fps... see getBlank() */
((char *)blank_data[i])[7] &= 0xF0;
((char *)blank_data[i])[7] += 2;
}
}
close(blankfd);
}
@@ -497,8 +502,15 @@ void cVideo::Standby(unsigned int bOn)
int cVideo::getBlank(void)
{
lt_debug("%s\n", __FUNCTION__);
return 0;
VIDEOINFO v;
memset(&v, 0, sizeof(v));
ioctl(fd, MPEG_VID_GET_V_INFO, &v);
/* HACK HACK HACK :-)
* setBlank() puts a 24fps black mpeg into the decoder...
* regular broadcast does not have 24fps, so if it is still
* there, video did not decode... */
lt_debug("%s: %hu (blank = 2)\n", __func__, v.frame_rate);
return (v.frame_rate == 2);
}
/* set zoom in percent (100% == 1:1) */