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lavd/xv: add window id param

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Device is able to use existing window, that can be a
part of existing GUI - instead of newly created one.

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
This commit is contained in:
Lukasz Marek 2014-04-19 01:53:20 +02:00
parent 5053897b6a
commit 9fcdfac894
2 changed files with 14 additions and 2 deletions
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9
doc/outdevs.texi
View File

@ -388,19 +388,26 @@ For example, @code{dual-headed:0.1} would specify screen 1 of display
Check the X11 specification for more detailed information about the
display name format.
@item window_id
When set to non-zero value then device doesn't create new window,
but uses existing one with provided @var{window_id}. By default
this options is set to zero and device creates its own window.
@item window_size
Set the created window size, can be a string of the form
@var{width}x@var{height} or a video size abbreviation. If not
specified it defaults to the size of the input video.
Ignored when @var{window_id} is set.
@item window_x
@item window_y
Set the X and Y window offsets for the created window. They are both
set to 0 by default. The values may be ignored by the window manager.
Ignored when @var{window_id} is set.
@item window_title
Set the window title, if not specified default to the filename
specified for the output device.
specified for the output device. Ignored when @var{window_id} is set.
@end table
For more information about XVideo see @url{http://www.x.org/}.

7
libavdevice/xv.c
View File

@ -24,7 +24,6 @@
*
* TODO:
* - add support to more formats
* - add support to window id specification
*/
#include <X11/Xlib.h>
@ -44,6 +43,7 @@ typedef struct {
GC gc;
Window window;
int64_t window_id;
char *window_title;
int window_width, window_height;
int window_x, window_y;
@ -144,6 +144,8 @@ static int xv_write_header(AVFormatContext *s)
xv->window_height = av_rescale(xv->window_height, sar.den, sar.num);
}
}
if (!xv->window_id) {
//TODO: reident
xv->window = XCreateSimpleWindow(xv->display, DefaultRootWindow(xv->display),
xv->window_x, xv->window_y,
xv->window_width, xv->window_height,
@ -156,6 +158,8 @@ static int xv_write_header(AVFormatContext *s)
}
XStoreName(xv->display, xv->window, xv->window_title);
XMapWindow(xv->display, xv->window);
} else
xv->window = xv->window_id;
if (XvQueryAdaptors(xv->display, DefaultRootWindow(xv->display), &num_adaptors, &ai) != Success) {
ret = AVERROR_EXTERNAL;
@ -315,6 +319,7 @@ static int xv_write_frame(AVFormatContext *s, int stream_index, AVFrame **frame,
#define OFFSET(x) offsetof(XVContext, x)
static const AVOption options[] = {
{ "display_name", "set display name", OFFSET(display_name), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_id", "set existing window id", OFFSET(window_id), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_size", "set window forced size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_title", "set window title", OFFSET(window_title), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
{ "window_x", "set window x offset", OFFSET(window_x), AV_OPT_TYPE_INT, {.i64 = 0 }, -INT_MAX, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },