From 1733fc4a6b62d7d0d4311699dec23bfeda025fe3 Mon Sep 17 00:00:00 2001 From: Michael Benjamin Date: Fri, 15 Sep 2006 11:17:41 +0000 Subject: [PATCH] Add support for 8-bit grayscale to V4L grabber 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 --- libavformat/grab.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/libavformat/grab.c b/libavformat/grab.c index 5b3c49a..15c1c5d 100644 --- a/libavformat/grab.c +++ b/libavformat/grab.c @@ -173,7 +173,11 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap) 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; } } } @@ -256,6 +260,10 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap) 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; } -- 2.7.4