Incidentally `-y` also collides with avconv global options. Update x11grab to match and document the option.
CC: [email protected] --- doc/indevs.texi | 10 ++++++++++ libavdevice/x11grab.c | 2 ++ libavdevice/xcbgrab.c | 2 ++ 3 files changed, 14 insertions(+) diff --git a/doc/indevs.texi b/doc/indevs.texi index 8ff64a7..e514b63 100644 --- a/doc/indevs.texi +++ b/doc/indevs.texi @@ -359,4 +359,14 @@ avconv -f x11grab -show_region 1 -r 25 -s cif -i :0.0+10,20 out.mpg avconv -f x11grab -follow_mouse centered -show_region 1 -r 25 -s cif -i :0.0 out.mpg @end example +@subsection @var{grab_x} @var{grab_y} AVOption + +The syntax is: +@example +-grab_x @var{x_offset} -grab_y @var{y_offset} +@end example + +Set the grabing region coordinates. The are expressed as offset from the top left +corner of the X11 window. The default value is 0. + @c man end INPUT DEVICES diff --git a/libavdevice/x11grab.c b/libavdevice/x11grab.c index 3aa4294..bb5d09d 100644 --- a/libavdevice/x11grab.c +++ b/libavdevice/x11grab.c @@ -614,6 +614,8 @@ static int x11grab_read_close(AVFormatContext *s1) #define OFFSET(x) offsetof(X11GrabContext, x) #define DEC AV_OPT_FLAG_DECODING_PARAM static const AVOption options[] = { + { "grab_x", "Initial x coordinate.", OFFSET(x_off), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D }, + { "grab_y", "Initial y coordinate.", OFFSET(y_off), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D }, { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "vga"}, 0, 0, DEC }, { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC }, { "draw_mouse", "Draw the mouse pointer.", OFFSET(draw_mouse), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, DEC }, diff --git a/libavdevice/xcbgrab.c b/libavdevice/xcbgrab.c index 7e9f258..032bbcc 100644 --- a/libavdevice/xcbgrab.c +++ b/libavdevice/xcbgrab.c @@ -77,6 +77,8 @@ typedef struct XCBGrabContext { static const AVOption options[] = { { "x", "Initial x coordinate.", OFFSET(x), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D }, { "y", "Initial y coordinate.", OFFSET(y), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D }, + { "grab_x", "Initial x coordinate.", OFFSET(x), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D }, + { "grab_y", "Initial y coordinate.", OFFSET(y), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D }, { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "vga" }, 0, 0, D }, { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc" }, 0, 0, D }, { "draw_mouse", "Draw the mouse pointer.", OFFSET(draw_mouse), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, D }, -- 2.1.0 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
