f58f4ce1 |
/*
* X11 video grab interface |
2909f177 |
* |
ef84bf04 |
* This file is part of FFmpeg. |
f58f4ce1 |
* |
ef84bf04 |
* FFmpeg integration:
* Copyright (C) 2006 Clemens Fruhwirth <clemens@endorphin.org>
* Edouard Gomez <ed.gomez@free.fr> |
f58f4ce1 |
* |
ef84bf04 |
* This file contains code from grab.c: |
aac105fc |
* Copyright (c) 2000-2001 Fabrice Bellard |
f58f4ce1 |
*
* This file contains code from the xvidcap project: |
ef84bf04 |
* Copyright (C) 1997-1998 Rasca, Berlin
* 2003-2004 Karl H. Beckers, Frankfurt |
f58f4ce1 |
* |
ef84bf04 |
* FFmpeg is free software; you can redistribute it and/or modify |
f58f4ce1 |
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* |
ef84bf04 |
* FFmpeg is distributed in the hope that it will be useful, |
f58f4ce1 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* |
e5a389a1 |
* You should have received a copy of the GNU General Public License
* along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
f58f4ce1 |
*/ |
2909f177 |
|
6e71a18e |
/** |
ba87f080 |
* @file |
e873c03a |
* X11 frame device demuxer
* @author Clemens Fruhwirth <clemens@endorphin.org>
* @author Edouard Gomez <ed.gomez@free.fr> |
6e71a18e |
*/
|
b0067549 |
#include "config.h" |
c3f9ebf7 |
#include "libavformat/internal.h" |
724a900c |
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h" |
c4ef6a3e |
#include "libavutil/time.h" |
f58f4ce1 |
#include <time.h> |
469a65b1 |
#include <X11/cursorfont.h> |
f58f4ce1 |
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xlibint.h>
#include <X11/Xproto.h> |
ef84bf04 |
#include <X11/Xutil.h> |
f58f4ce1 |
#include <sys/shm.h> |
1442d295 |
#include <X11/extensions/shape.h> |
f58f4ce1 |
#include <X11/extensions/XShm.h> |
781c1aa6 |
#include <X11/extensions/Xfixes.h> |
6b899e16 |
#include "avdevice.h" |
f58f4ce1 |
|
6e71a18e |
/**
* X11 Device Demuxer context
*/ |
24f8961f |
struct x11grab { |
724a900c |
const AVClass *class; /**< Class for private options. */ |
6e71a18e |
int frame_size; /**< Size in bytes of a grabbed frame */
AVRational time_base; /**< Time base */
int64_t time_frame; /**< Current time */
int width; /**< Width of the grab frame */ |
5732f40e |
int height; /**< Height of the grab frame */ |
6e71a18e |
int x_off; /**< Horizontal top-left corner coordinate */
int y_off; /**< Vertical top-left corner coordinate */
Display *dpy; /**< X11 display from which x11grab grabs frames */
XImage *image; /**< X11 image holding the grab */
int use_shm; /**< !0 when using XShm extension */
XShmSegmentInfo shminfo; /**< When using XShm, keeps track of XShm infos */ |
ce558c8f |
int draw_mouse; /**< Set by a private option. */ |
085791a9 |
int follow_mouse; /**< Set by a private option. */ |
1442d295 |
int show_region; /**< set by a private option. */ |
0addc828 |
AVRational framerate; /**< Set by a private option. */ |
f60c3a7c |
int palette_changed;
uint32_t palette[256]; |
1442d295 |
|
1ee8fadb |
Cursor c; |
1442d295 |
Window region_win; /**< This is used by show_region option. */ |
616deed2 |
}; |
6e71a18e |
|
1442d295 |
#define REGION_WIN_BORDER 3
/**
* Draw grabbing region window
* |
24f8961f |
* @param s x11grab context |
1442d295 |
*/
static void |
24f8961f |
x11grab_draw_region_win(struct x11grab *s) |
1442d295 |
{
Display *dpy = s->dpy;
int screen;
Window win = s->region_win;
GC gc;
screen = DefaultScreen(dpy);
gc = XCreateGC(dpy, win, 0, 0);
XSetForeground(dpy, gc, WhitePixel(dpy, screen));
XSetBackground(dpy, gc, BlackPixel(dpy, screen));
XSetLineAttributes(dpy, gc, REGION_WIN_BORDER, LineDoubleDash, 0, 0);
XDrawRectangle(dpy, win, gc,
1, 1,
(s->width + REGION_WIN_BORDER * 2) - 1 * 2 - 1,
(s->height + REGION_WIN_BORDER * 2) - 1 * 2 - 1);
XFreeGC(dpy, gc);
}
/**
* Initialize grabbing region window
* |
24f8961f |
* @param s x11grab context |
1442d295 |
*/
static void |
24f8961f |
x11grab_region_win_init(struct x11grab *s) |
1442d295 |
{
Display *dpy = s->dpy;
int screen;
XSetWindowAttributes attribs;
XRectangle rect;
screen = DefaultScreen(dpy);
attribs.override_redirect = True;
s->region_win = XCreateWindow(dpy, RootWindow(dpy, screen),
s->x_off - REGION_WIN_BORDER,
s->y_off - REGION_WIN_BORDER,
s->width + REGION_WIN_BORDER * 2,
s->height + REGION_WIN_BORDER * 2,
0, CopyFromParent,
InputOutput, CopyFromParent,
CWOverrideRedirect, &attribs);
rect.x = 0;
rect.y = 0;
rect.width = s->width;
rect.height = s->height;
XShapeCombineRectangles(dpy, s->region_win,
ShapeBounding, REGION_WIN_BORDER, REGION_WIN_BORDER,
&rect, 1, ShapeSubtract, 0);
XMapWindow(dpy, s->region_win);
XSelectInput(dpy, s->region_win, ExposureMask | StructureNotifyMask);
x11grab_draw_region_win(s);
}
|
6e71a18e |
/** |
49bd8e4b |
* Initialize the x11 grab device demuxer (public device demuxer API). |
6e71a18e |
*
* @param s1 Context from avformat core
* @return <ul> |
5632e568 |
* <li>AVERROR(ENOMEM) no memory left</li> |
6f3e0b21 |
* <li>AVERROR(EIO) other failure case</li> |
6e71a18e |
* <li>0 success</li>
* </ul>
*/ |
2909f177 |
static int |
6e9651d1 |
x11grab_read_header(AVFormatContext *s1) |
f58f4ce1 |
{ |
24f8961f |
struct x11grab *x11grab = s1->priv_data; |
aac105fc |
Display *dpy;
AVStream *st = NULL; |
716d413c |
enum AVPixelFormat input_pixfmt; |
aac105fc |
XImage *image; |
6e71a18e |
int x_off = 0;
int y_off = 0; |
085791a9 |
int screen; |
aac105fc |
int use_shm; |
44a8b0dd |
char *dpyname, *offset; |
3102fb03 |
int ret = 0; |
f60c3a7c |
Colormap color_map;
XColor color[256];
int i; |
aac105fc |
|
44a8b0dd |
dpyname = av_strdup(s1->filename); |
967bdb85 |
if (!dpyname) |
d3958ab4 |
goto out;
|
44a8b0dd |
offset = strchr(dpyname, '+'); |
0cd4faf9 |
if (offset) {
sscanf(offset, "%d,%d", &x_off, &y_off); |
4270d8c0 |
if (strstr(offset, "nomouse")) {
av_log(s1, AV_LOG_WARNING,
"'nomouse' specification in argument is deprecated: "
"use 'draw_mouse' option with value 0 instead\n");
x11grab->draw_mouse = 0;
} |
0cd4faf9 |
*offset= 0;
}
|
724a900c |
av_log(s1, AV_LOG_INFO, "device: %s -> display: %s x: %d y: %d width: %d height: %d\n", |
8381ab14 |
s1->filename, dpyname, x_off, y_off, x11grab->width, x11grab->height); |
0cd4faf9 |
|
44a8b0dd |
dpy = XOpenDisplay(dpyname);
av_freep(&dpyname); |
0cd4faf9 |
if(!dpy) {
av_log(s1, AV_LOG_ERROR, "Could not open X display.\n"); |
3102fb03 |
ret = AVERROR(EIO);
goto out; |
0cd4faf9 |
} |
aac105fc |
|
3b3bbdd3 |
st = avformat_new_stream(s1, NULL); |
aac105fc |
if (!st) { |
3102fb03 |
ret = AVERROR(ENOMEM);
goto out; |
aac105fc |
} |
c3f9ebf7 |
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ |
aac105fc |
|
085791a9 |
screen = DefaultScreen(dpy);
if (x11grab->follow_mouse) {
int screen_w, screen_h;
Window w;
screen_w = DisplayWidth(dpy, screen);
screen_h = DisplayHeight(dpy, screen);
XQueryPointer(dpy, RootWindow(dpy, screen), &w, &w, &x_off, &y_off, &ret, &ret, &ret);
x_off -= x11grab->width / 2;
y_off -= x11grab->height / 2;
x_off = FFMIN(FFMAX(x_off, 0), screen_w - x11grab->width);
y_off = FFMIN(FFMAX(y_off, 0), screen_h - x11grab->height);
av_log(s1, AV_LOG_INFO, "followmouse is enabled, resetting grabbing region to x: %d y: %d\n", x_off, y_off);
}
|
aac105fc |
use_shm = XShmQueryExtension(dpy); |
9af20971 |
av_log(s1, AV_LOG_INFO, "shared memory extension%s found\n", use_shm ? "" : " not"); |
aac105fc |
if(use_shm) {
int scr = XDefaultScreen(dpy);
image = XShmCreateImage(dpy,
DefaultVisual(dpy, scr),
DefaultDepth(dpy, scr),
ZPixmap,
NULL,
&x11grab->shminfo, |
724a900c |
x11grab->width, x11grab->height); |
aac105fc |
x11grab->shminfo.shmid = shmget(IPC_PRIVATE,
image->bytes_per_line * image->height,
IPC_CREAT|0777);
if (x11grab->shminfo.shmid == -1) {
av_log(s1, AV_LOG_ERROR, "Fatal: Can't get shared memory!\n"); |
3102fb03 |
ret = AVERROR(ENOMEM);
goto out; |
aac105fc |
}
x11grab->shminfo.shmaddr = image->data = shmat(x11grab->shminfo.shmid, 0, 0);
x11grab->shminfo.readOnly = False;
if (!XShmAttach(dpy, &x11grab->shminfo)) {
av_log(s1, AV_LOG_ERROR, "Fatal: Failed to attach shared memory!\n");
/* needs some better error subroutine :) */ |
3102fb03 |
ret = AVERROR(EIO);
goto out; |
aac105fc |
}
} else { |
085791a9 |
image = XGetImage(dpy, RootWindow(dpy, screen), |
aac105fc |
x_off,y_off, |
724a900c |
x11grab->width, x11grab->height, |
aac105fc |
AllPlanes, ZPixmap);
}
switch (image->bits_per_pixel) {
case 8: |
6187b8bd |
av_log (s1, AV_LOG_DEBUG, "8 bit palette\n"); |
716d413c |
input_pixfmt = AV_PIX_FMT_PAL8; |
f60c3a7c |
color_map = DefaultColormap(dpy, screen);
for (i = 0; i < 256; ++i)
color[i].pixel = i;
XQueryColors(dpy, color_map, color, 256);
for (i = 0; i < 256; ++i)
x11grab->palette[i] = (color[i].red & 0xFF00) << 8 |
(color[i].green & 0xFF00) |
(color[i].blue & 0xFF00) >> 8;
x11grab->palette_changed = 1; |
aac105fc |
break;
case 16: |
6e71a18e |
if ( image->red_mask == 0xf800 &&
image->green_mask == 0x07e0 &&
image->blue_mask == 0x001f ) { |
aac105fc |
av_log (s1, AV_LOG_DEBUG, "16 bit RGB565\n"); |
716d413c |
input_pixfmt = AV_PIX_FMT_RGB565; |
6e71a18e |
} else if (image->red_mask == 0x7c00 &&
image->green_mask == 0x03e0 &&
image->blue_mask == 0x001f ) { |
aac105fc |
av_log(s1, AV_LOG_DEBUG, "16 bit RGB555\n"); |
716d413c |
input_pixfmt = AV_PIX_FMT_RGB555; |
aac105fc |
} 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); |
3102fb03 |
ret = AVERROR(EIO);
goto out; |
aac105fc |
}
break;
case 24: |
6e71a18e |
if ( image->red_mask == 0xff0000 &&
image->green_mask == 0x00ff00 &&
image->blue_mask == 0x0000ff ) { |
716d413c |
input_pixfmt = AV_PIX_FMT_BGR24; |
6e71a18e |
} else if ( image->red_mask == 0x0000ff &&
image->green_mask == 0x00ff00 &&
image->blue_mask == 0xff0000 ) { |
716d413c |
input_pixfmt = AV_PIX_FMT_RGB24; |
aac105fc |
} 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); |
3102fb03 |
ret = AVERROR(EIO);
goto out; |
aac105fc |
}
break;
case 32: |
ac627b3d |
input_pixfmt = AV_PIX_FMT_0RGB32; |
aac105fc |
break;
default:
av_log(s1, AV_LOG_ERROR, "image depth %i not supported ... aborting\n", image->bits_per_pixel); |
3102fb03 |
ret = AVERROR(EINVAL);
goto out; |
aac105fc |
}
|
724a900c |
x11grab->frame_size = x11grab->width * x11grab->height * image->bits_per_pixel/8; |
aac105fc |
x11grab->dpy = dpy; |
0addc828 |
x11grab->time_base = av_inv_q(x11grab->framerate); |
ff494cbd |
x11grab->time_frame = av_gettime() / av_q2d(x11grab->time_base); |
aac105fc |
x11grab->x_off = x_off;
x11grab->y_off = y_off;
x11grab->image = image;
x11grab->use_shm = use_shm;
|
72415b2a |
st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
36ef5369 |
st->codec->codec_id = AV_CODEC_ID_RAWVIDEO; |
724a900c |
st->codec->width = x11grab->width;
st->codec->height = x11grab->height; |
aac105fc |
st->codec->pix_fmt = input_pixfmt; |
ff494cbd |
st->codec->time_base = x11grab->time_base;
st->codec->bit_rate = x11grab->frame_size * 1/av_q2d(x11grab->time_base) * 8; |
aac105fc |
|
3102fb03 |
out: |
50d67d95 |
av_free(dpyname); |
3102fb03 |
return ret; |
f58f4ce1 |
}
|
6e71a18e |
/** |
49bd8e4b |
* Paint a mouse pointer in an X11 image. |
6e71a18e |
* |
bd107136 |
* @param image image to paint the mouse pointer to |
6e71a18e |
* @param s context used to retrieve original grabbing rectangle
* coordinates
*/ |
2909f177 |
static void |
24f8961f |
paint_mouse_pointer(XImage *image, struct x11grab *s) |
2909f177 |
{ |
aac105fc |
int x_off = s->x_off;
int y_off = s->y_off;
int width = s->width;
int height = s->height; |
781c1aa6 |
Display *dpy = s->dpy;
XFixesCursorImage *xcim;
int x, y;
int line, column;
int to_line, to_column; |
8ce803db |
int pixstride = image->bits_per_pixel >> 3;
/* Warning: in its insanity, xlib provides unsigned image data through a
* char* pointer, so we have to make it uint8_t to make things not break.
* Anyone who performs further investigation of the xlib API likely risks
* permanent brain damage. */
uint8_t *pix = image->data; |
11d695d1 |
Window w;
XSetWindowAttributes attr; |
8ce803db |
/* Code doesn't currently support 16-bit or PAL8 */
if (image->bits_per_pixel != 24 && image->bits_per_pixel != 32)
return; |
aac105fc |
|
1ee8fadb |
if(!s->c)
s->c = XCreateFontCursor(dpy, XC_left_ptr); |
11d695d1 |
w = DefaultRootWindow(dpy); |
1ee8fadb |
attr.cursor = s->c; |
469a65b1 |
XChangeWindowAttributes(dpy, w, CWCursor, &attr);
|
33e7febd |
xcim = XFixesGetCursorImage(dpy); |
aac105fc |
|
781c1aa6 |
x = xcim->x - xcim->xhot;
y = xcim->y - xcim->yhot;
to_line = FFMIN((y + xcim->height), (height + y_off));
to_column = FFMIN((x + xcim->width), (width + x_off));
for (line = FFMAX(y, y_off); line < to_line; line++) {
for (column = FFMAX(x, x_off); column < to_column; column++) { |
8ce803db |
int xcim_addr = (line - y) * xcim->width + column - x;
int image_addr = ((line - y_off) * width + column - x_off) * pixstride;
int r = (uint8_t)(xcim->pixels[xcim_addr] >> 0);
int g = (uint8_t)(xcim->pixels[xcim_addr] >> 8);
int b = (uint8_t)(xcim->pixels[xcim_addr] >> 16);
int a = (uint8_t)(xcim->pixels[xcim_addr] >> 24);
if (a == 255) {
pix[image_addr+0] = r;
pix[image_addr+1] = g;
pix[image_addr+2] = b;
} else if (a) {
/* pixel values from XFixesGetCursorImage come premultiplied by alpha */
pix[image_addr+0] = r + (pix[image_addr+0]*(255-a) + 255/2) / 255;
pix[image_addr+1] = g + (pix[image_addr+1]*(255-a) + 255/2) / 255;
pix[image_addr+2] = b + (pix[image_addr+2]*(255-a) + 255/2) / 255; |
0235a311 |
} |
aac105fc |
}
} |
781c1aa6 |
XFree(xcim);
xcim = NULL; |
f58f4ce1 |
}
|
6e71a18e |
/** |
49bd8e4b |
* Read new data in the image structure. |
6e71a18e |
*
* @param dpy X11 display to grab from |
05f3b6ab |
* @param d |
6e71a18e |
* @param image Image where the grab will be put
* @param x Top-Left grabbing rectangle horizontal coordinate
* @param y Top-Left grabbing rectangle vertical coordinate
* @return 0 if error, !0 if successful |
f58f4ce1 |
*/
static int |
6e71a18e |
xget_zpixmap(Display *dpy, Drawable d, XImage *image, int x, int y) |
f58f4ce1 |
{ |
aac105fc |
xGetImageReply rep;
xGetImageReq *req;
long nbytes;
if (!image) { |
6e71a18e |
return 0; |
aac105fc |
}
LockDisplay(dpy);
GetReq(GetImage, req);
/* First set up the standard stuff in the request */
req->drawable = d;
req->x = x;
req->y = y;
req->width = image->width;
req->height = image->height;
req->planeMask = (unsigned int)AllPlanes;
req->format = ZPixmap;
|
6e71a18e |
if (!_XReply(dpy, (xReply *)&rep, 0, xFalse) || !rep.length) { |
aac105fc |
UnlockDisplay(dpy);
SyncHandle(); |
6e71a18e |
return 0; |
aac105fc |
}
nbytes = (long)rep.length << 2;
_XReadPad(dpy, image->data, nbytes);
UnlockDisplay(dpy);
SyncHandle(); |
6e71a18e |
return 1; |
f58f4ce1 |
}
|
6e71a18e |
/** |
49bd8e4b |
* Grab a frame from x11 (public device demuxer API). |
6e71a18e |
*
* @param s1 Context from avformat core
* @param pkt Packet holding the brabbed frame
* @return frame size in bytes
*/ |
0235a311 |
static int
x11grab_read_packet(AVFormatContext *s1, AVPacket *pkt) |
f58f4ce1 |
{ |
24f8961f |
struct x11grab *s = s1->priv_data; |
aac105fc |
Display *dpy = s->dpy;
XImage *image = s->image;
int x_off = s->x_off;
int y_off = s->y_off;
|
085791a9 |
int screen;
Window root;
int follow_mouse = s->follow_mouse;
|
aac105fc |
int64_t curtime, delay;
struct timespec ts;
/* Calculate the time of the next frame */ |
ba78f9d4 |
s->time_frame += INT64_C(1000000); |
aac105fc |
/* wait based on the frame rate */
for(;;) {
curtime = av_gettime(); |
6e71a18e |
delay = s->time_frame * av_q2d(s->time_base) - curtime; |
aac105fc |
if (delay <= 0) { |
ba78f9d4 |
if (delay < INT64_C(-1000000) * av_q2d(s->time_base)) {
s->time_frame += INT64_C(1000000); |
aac105fc |
}
break;
}
ts.tv_sec = delay / 1000000;
ts.tv_nsec = (delay % 1000000) * 1000;
nanosleep(&ts, NULL);
}
|
39530272 |
av_init_packet(pkt);
pkt->data = image->data;
pkt->size = s->frame_size; |
6e71a18e |
pkt->pts = curtime; |
f60c3a7c |
if (s->palette_changed) {
uint8_t *pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE,
AVPALETTE_SIZE);
if (!pal) {
av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
} else {
memcpy(pal, s->palette, AVPALETTE_SIZE);
s->palette_changed = 0;
}
} |
aac105fc |
|
085791a9 |
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
if (follow_mouse) {
int screen_w, screen_h;
int pointer_x, pointer_y, _;
Window w;
screen_w = DisplayWidth(dpy, screen);
screen_h = DisplayHeight(dpy, screen);
XQueryPointer(dpy, root, &w, &w, &pointer_x, &pointer_y, &_, &_, &_);
if (follow_mouse == -1) {
// follow the mouse, put it at center of grabbing region
x_off += pointer_x - s->width / 2 - x_off;
y_off += pointer_y - s->height / 2 - y_off;
} else {
// follow the mouse, but only move the grabbing region when mouse
// reaches within certain pixels to the edge.
if (pointer_x > x_off + s->width - follow_mouse) {
x_off += pointer_x - (x_off + s->width - follow_mouse);
} else if (pointer_x < x_off + follow_mouse)
x_off -= (x_off + follow_mouse) - pointer_x;
if (pointer_y > y_off + s->height - follow_mouse) {
y_off += pointer_y - (y_off + s->height - follow_mouse);
} else if (pointer_y < y_off + follow_mouse)
y_off -= (y_off + follow_mouse) - pointer_y;
}
// adjust grabbing region position if it goes out of screen.
s->x_off = x_off = FFMIN(FFMAX(x_off, 0), screen_w - s->width);
s->y_off = y_off = FFMIN(FFMAX(y_off, 0), screen_h - s->height); |
1442d295 |
if (s->show_region && s->region_win)
XMoveWindow(dpy, s->region_win,
s->x_off - REGION_WIN_BORDER,
s->y_off - REGION_WIN_BORDER);
}
if (s->show_region) {
if (s->region_win) {
XEvent evt;
// clean up the events, and do the initinal draw or redraw.
for (evt.type = NoEventMask; XCheckMaskEvent(dpy, ExposureMask | StructureNotifyMask, &evt); );
if (evt.type)
x11grab_draw_region_win(s);
} else {
x11grab_region_win_init(s);
} |
085791a9 |
}
|
aac105fc |
if(s->use_shm) { |
085791a9 |
if (!XShmGetImage(dpy, root, image, x_off, y_off, AllPlanes)) { |
aac105fc |
av_log (s1, AV_LOG_INFO, "XShmGetImage() failed\n");
}
} else { |
085791a9 |
if (!xget_zpixmap(dpy, root, image, x_off, y_off)) { |
aac105fc |
av_log (s1, AV_LOG_INFO, "XGetZPixmap() failed\n");
}
}
|
ce558c8f |
if (s->draw_mouse) { |
781c1aa6 |
paint_mouse_pointer(image, s); |
aac105fc |
}
return s->frame_size; |
f58f4ce1 |
}
|
6e71a18e |
/** |
49bd8e4b |
* Close x11 frame grabber (public device demuxer API). |
6e71a18e |
*
* @param s1 Context from avformat core
* @return 0 success, !0 failure
*/ |
0235a311 |
static int
x11grab_read_close(AVFormatContext *s1) |
f58f4ce1 |
{ |
24f8961f |
struct x11grab *x11grab = s1->priv_data; |
aac105fc |
/* Detach cleanly from shared mem */
if (x11grab->use_shm) {
XShmDetach(x11grab->dpy, &x11grab->shminfo);
shmdt(x11grab->shminfo.shmaddr);
shmctl(x11grab->shminfo.shmid, IPC_RMID, NULL);
}
/* Destroy X11 image */
if (x11grab->image) {
XDestroyImage(x11grab->image);
x11grab->image = NULL;
}
|
1442d295 |
if (x11grab->region_win) {
XDestroyWindow(x11grab->dpy, x11grab->region_win);
}
|
aac105fc |
/* Free X11 display */
XCloseDisplay(x11grab->dpy);
return 0; |
f58f4ce1 |
}
|
24f8961f |
#define OFFSET(x) offsetof(struct x11grab, x) |
724a900c |
#define DEC AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = { |
d46c1c72 |
{ "draw_mouse", "draw the mouse pointer", OFFSET(draw_mouse), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, DEC }, |
c93b796c |
{ "follow_mouse", "move the grabbing region when the mouse pointer reaches within specified amount of pixels to the edge of region", |
d46c1c72 |
OFFSET(follow_mouse), AV_OPT_TYPE_INT, {.i64 = 0}, -1, INT_MAX, DEC, "follow_mouse" }, |
c93b796c |
{ "centered", "keep the mouse pointer at the center of grabbing region when following", |
d5f65e9d |
0, AV_OPT_TYPE_CONST, {.i64 = -1}, INT_MIN, INT_MAX, DEC, "follow_mouse" }, |
c93b796c |
|
0addc828 |
{ "framerate", "set video frame rate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "ntsc"}, 0, 0, DEC }, |
d46c1c72 |
{ "show_region", "show the grabbing region", OFFSET(show_region), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC }, |
c93b796c |
{ "video_size", "set video frame size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = "vga"}, 0, 0, DEC }, |
724a900c |
{ NULL },
};
static const AVClass x11_class = {
.class_name = "X11grab indev",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
|
6e71a18e |
/** x11 grabber device demuxer declaration */ |
24f8961f |
AVInputFormat ff_x11grab_demuxer = { |
30b4ee79 |
.name = "x11grab",
.long_name = NULL_IF_CONFIG_SMALL("X11grab"), |
24f8961f |
.priv_data_size = sizeof(struct x11grab), |
30b4ee79 |
.read_header = x11grab_read_header,
.read_packet = x11grab_read_packet,
.read_close = x11grab_read_close,
.flags = AVFMT_NOFILE,
.priv_class = &x11_class, |
f58f4ce1 |
}; |