patch by Michael Benjamin % neuroptik AH gmail.com %
Original thread:
Date: Aug 24, 2006 5:40 PM
Subject: [Ffmpeg-devel] V4L grab.c patch for Grayscale
Originally committed as revision 6259 to svn://svn.ffmpeg.org/ffmpeg/trunk
pict.depth=24;
ret = ioctl(video_fd, VIDIOCSPICT, &pict);
if (ret < 0)
- goto fail1;
+ pict.palette=VIDEO_PALETTE_GREY;
+ pict.depth=8;
+ ret = ioctl(video_fd, VIDIOCSPICT, &pict);
+ if (ret < 0)
+ goto fail1;
}
}
}
frame_size = width * height * 3;
st->codec->pix_fmt = PIX_FMT_BGR24; /* NOTE: v4l uses BGR24, not RGB24 ! */
break;
+ case VIDEO_PALETTE_GREY:
+ frame_size = width * height * 1;
+ st->codec->pix_fmt = PIX_FMT_GRAY8;
+ break;
default:
goto fail;
}