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lavd/x11grab: check 32-bits color masks.

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The X11 servers by VNC, at 32-bits depths, has the following masks:
R:0x000007ff G:0x003ff800 B:0xffc00000
This is not compatible with AV_PIX_FMT_0RGB32, and the result
is success with completely wrong colors.
This commit is contained in:
Nicolas George 2014-07-15 16:04:49 +02:00
parent 36fbe3c789
commit 16c6795465
1 changed files with 10 additions and 1 deletions
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11
libavdevice/x11grab.c
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@ -308,7 +308,16 @@ x11grab_read_header(AVFormatContext *s1)
}
break;
case 32:
input_pixfmt = AV_PIX_FMT_0RGB32;
if ( image->red_mask == 0xff0000 &&
image->green_mask == 0x00ff00 &&
image->blue_mask == 0x0000ff ) {
input_pixfmt = AV_PIX_FMT_0RGB32;
} else {
av_log(s1, AV_LOG_ERROR,"rgb ordering at image depth %i not supported ... aborting\n", image->bits_per_pixel);
av_log(s1, AV_LOG_ERROR, "color masks: r 0x%.6lx g 0x%.6lx b 0x%.6lx\n", image->red_mask, image->green_mask, image->blue_mask);
ret = AVERROR_PATCHWELCOME;
goto out;
}
break;
default:
av_log(s1, AV_LOG_ERROR, "image depth %i not supported ... aborting\n", image->bits_per_pixel);