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-rw-r--r--libavformat/x11grab.c529
1 files changed, 0 insertions, 529 deletions
diff --git a/libavformat/x11grab.c b/libavformat/x11grab.c
deleted file mode 100644
index 61c14355aa..0000000000
--- a/libavformat/x11grab.c
+++ /dev/null
@@ -1,529 +0,0 @@
-/*
- * X11 video grab interface
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg integration:
- * Copyright (C) 2006 Clemens Fruhwirth <clemens@endorphin.org>
- * Edouard Gomez <ed.gomez@free.fr>
- *
- * This file contains code from grab.c:
- * Copyright (c) 2000-2001 Fabrice Bellard
- *
- * This file contains code from the xvidcap project:
- * Copyright (C) 1997-1998 Rasca, Berlin
- * 2003-2004 Karl H. Beckers, Frankfurt
- *
- * FFmpeg is free software; you can redistribute it and/or modify
- * 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.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * 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.
- *
- * 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
- */
-
-/**
- * @file x11grab.c
- * X11 frame device demuxer by Clemens Fruhwirth <clemens@endorphin.org>
- * and Edouard Gomez <ed.gomez@free.fr>.
- */
-
-#include "avformat.h"
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-#define _LINUX_TIME_H 1
-#include <time.h>
-#include <X11/X.h>
-#include <X11/Xlib.h>
-#include <X11/Xlibint.h>
-#include <X11/Xproto.h>
-#include <X11/Xutil.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <X11/extensions/XShm.h>
-
-/**
- * X11 Device Demuxer context
- */
-typedef struct x11_grab_s
-{
- int frame_size; /**< Size in bytes of a grabbed frame */
- AVRational time_base; /**< Time base */
- int64_t time_frame; /**< Current time */
-
- int height; /**< Height of the grab frame */
- int width; /**< Width of the grab frame */
- 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 */
- int mouse_warning_shown;
-} x11_grab_t;
-
-/**
- * Initializes the x11 grab device demuxer (public device demuxer API).
- *
- * @param s1 Context from avformat core
- * @param ap Parameters from avformat core
- * @return <ul>
- * <li>AVERROR(ENOMEM) no memory left</li>
- * <li>AVERROR(EIO) other failure case</li>
- * <li>0 success</li>
- * </ul>
- */
-static int
-x11grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
-{
- x11_grab_t *x11grab = s1->priv_data;
- Display *dpy;
- AVStream *st = NULL;
- int input_pixfmt;
- XImage *image;
- int x_off = 0;
- int y_off = 0;
- int use_shm;
- char *param, *offset;
-
- param = av_strdup(s1->filename);
- offset = strchr(param, '+');
- if (offset) {
- sscanf(offset, "%d,%d", &x_off, &y_off);
- *offset= 0;
- }
-
- av_log(s1, AV_LOG_INFO, "device: %s -> display: %s x: %d y: %d width: %d height: %d\n", s1->filename, param, x_off, y_off, ap->width, ap->height);
-
- dpy = XOpenDisplay(param);
- if(!dpy) {
- av_log(s1, AV_LOG_ERROR, "Could not open X display.\n");
- return AVERROR(EIO);
- }
-
- if (!ap || ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
- av_log(s1, AV_LOG_ERROR, "AVParameters don't have any video size. Use -s.\n");
- return AVERROR(EIO);
- }
-
- st = av_new_stream(s1, 0);
- if (!st) {
- return AVERROR(ENOMEM);
- }
- av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
-
- use_shm = XShmQueryExtension(dpy);
- av_log(s1, AV_LOG_INFO, "shared memory extension %s found\n", use_shm ? "" : "not");
-
- if(use_shm) {
- int scr = XDefaultScreen(dpy);
- image = XShmCreateImage(dpy,
- DefaultVisual(dpy, scr),
- DefaultDepth(dpy, scr),
- ZPixmap,
- NULL,
- &x11grab->shminfo,
- ap->width, ap->height);
- 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");
- return AVERROR(ENOMEM);
- }
- 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 :) */
- return AVERROR(EIO);
- }
- } else {
- image = XGetImage(dpy, RootWindow(dpy, DefaultScreen(dpy)),
- x_off,y_off,
- ap->width,ap->height,
- AllPlanes, ZPixmap);
- }
-
- switch (image->bits_per_pixel) {
- case 8:
- av_log (s1, AV_LOG_DEBUG, "8 bit palette\n");
- input_pixfmt = PIX_FMT_PAL8;
- break;
- case 16:
- if ( image->red_mask == 0xf800 &&
- image->green_mask == 0x07e0 &&
- image->blue_mask == 0x001f ) {
- av_log (s1, AV_LOG_DEBUG, "16 bit RGB565\n");
- input_pixfmt = PIX_FMT_RGB565;
- } else if (image->red_mask == 0x7c00 &&
- image->green_mask == 0x03e0 &&
- image->blue_mask == 0x001f ) {
- av_log(s1, AV_LOG_DEBUG, "16 bit RGB555\n");
- input_pixfmt = PIX_FMT_RGB555;
- } 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);
- return AVERROR(EIO);
- }
- break;
- case 24:
- if ( image->red_mask == 0xff0000 &&
- image->green_mask == 0x00ff00 &&
- image->blue_mask == 0x0000ff ) {
- input_pixfmt = PIX_FMT_BGR24;
- } else if ( image->red_mask == 0x0000ff &&
- image->green_mask == 0x00ff00 &&
- image->blue_mask == 0xff0000 ) {
- input_pixfmt = PIX_FMT_RGB24;
- } 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);
- return AVERROR(EIO);
- }
- break;
- case 32:
-#if 0
- GetColorInfo (image, &c_info);
- if ( c_info.alpha_mask == 0xff000000 && image->green_mask == 0x0000ff00) {
- /* byte order is relevant here, not endianness
- * endianness is handled by avcodec, but atm no such thing
- * as having ABGR, instead of ARGB in a word. Since we
- * need this for Solaris/SPARC, but need to do the conversion
- * for every frame we do it outside of this loop, cf. below
- * this matches both ARGB32 and ABGR32 */
- input_pixfmt = PIX_FMT_ARGB32;
- } else {
- av_log(s1, AV_LOG_ERROR,"image depth %i not supported ... aborting\n", image->bits_per_pixel);
- return AVERROR(EIO);
- }
-#endif
- input_pixfmt = PIX_FMT_RGB32;
- break;
- default:
- av_log(s1, AV_LOG_ERROR, "image depth %i not supported ... aborting\n", image->bits_per_pixel);
- return -1;
- }
-
- x11grab->frame_size = ap->width * ap->height * image->bits_per_pixel/8;
- x11grab->dpy = dpy;
- x11grab->width = ap->width;
- x11grab->height = ap->height;
- x11grab->time_base = ap->time_base;
- x11grab->time_frame = av_gettime() / av_q2d(ap->time_base);
- x11grab->x_off = x_off;
- x11grab->y_off = y_off;
- x11grab->image = image;
- x11grab->use_shm = use_shm;
- x11grab->mouse_warning_shown = 0;
-
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_RAWVIDEO;
- st->codec->width = ap->width;
- st->codec->height = ap->height;
- st->codec->pix_fmt = input_pixfmt;
- st->codec->time_base = ap->time_base;
- st->codec->bit_rate = x11grab->frame_size * 1/av_q2d(ap->time_base) * 8;
-
- return 0;
-}
-
-/**
- * Get pointer coordinates from X11.
- *
- * @param x Integer where horizontal coordinate will be returned
- * @param y Integer where vertical coordinate will be returned
- * @param dpy X11 display from where pointer coordinates are retrieved
- * @param s1 Context used for logging errors if necessary
- */
-static void
-get_pointer_coordinates(int *x, int *y, Display *dpy, AVFormatContext *s1)
-{
- Window mrootwindow, childwindow;
- int dummy;
-
- mrootwindow = DefaultRootWindow(dpy);
-
- if (XQueryPointer(dpy, mrootwindow, &mrootwindow, &childwindow,
- x, y, &dummy, &dummy, (unsigned int*)&dummy)) {
- } else {
- x11_grab_t *s = s1->priv_data;
- if (!s->mouse_warning_shown) {
- av_log(s1, AV_LOG_INFO, "couldn't find mouse pointer\n");
- s->mouse_warning_shown = 1;
- }
- *x = -1;
- *y = -1;
- }
-}
-
-/**
- * Mouse painting helper function that applies an 'and' and 'or' mask pair to
- * '*dst' pixel. It actually draws a mouse pointer pixel to grabbed frame.
- *
- * @param dst Destination pixel
- * @param and Part of the mask that must be applied using a bitwise 'and'
- * operator
- * @param or Part of the mask that must be applied using a bitwise 'or'
- * operator
- * @param bits_per_pixel Bits per pixel used in the grabbed image
- */
-static void inline
-apply_masks(uint8_t *dst, int and, int or, int bits_per_pixel)
-{
- switch (bits_per_pixel) {
- case 32:
- *(uint32_t*)dst = (*(uint32_t*)dst & and) | or;
- break;
- case 16:
- *(uint16_t*)dst = (*(uint16_t*)dst & and) | or;
- break;
- case 8:
- *dst = !!or;
- break;
- }
-}
-
-/**
- * Paints a mouse pointer in an X11 image.
- *
- * @param image Image where to paint the mouse pointer
- * @param s context used to retrieve original grabbing rectangle
- * coordinates
- * @param x Mouse pointer coordinate
- * @param y Mouse pointer coordinate
- */
-static void
-paint_mouse_pointer(XImage *image, x11_grab_t *s, int x, int y)
-{
- /* 16x20x1bpp bitmap for the black channel of the mouse pointer */
- static const uint16_t const mousePointerBlack[] =
- {
- 0x0000, 0x0003, 0x0005, 0x0009, 0x0011,
- 0x0021, 0x0041, 0x0081, 0x0101, 0x0201,
- 0x03c1, 0x0049, 0x0095, 0x0093, 0x0120,
- 0x0120, 0x0240, 0x0240, 0x0380, 0x0000
- };
-
- /* 16x20x1bpp bitmap for the white channel of the mouse pointer */
- static const uint16_t const mousePointerWhite[] =
- {
- 0x0000, 0x0000, 0x0002, 0x0006, 0x000e,
- 0x001e, 0x003e, 0x007e, 0x00fe, 0x01fe,
- 0x003e, 0x0036, 0x0062, 0x0060, 0x00c0,
- 0x00c0, 0x0180, 0x0180, 0x0000, 0x0000
- };
-
- int x_off = s->x_off;
- int y_off = s->y_off;
- int width = s->width;
- int height = s->height;
-
- if ( x - x_off >= 0 && x < width + x_off
- && y - y_off >= 0 && y < height + y_off) {
- uint8_t *im_data = (uint8_t*)image->data;
- int bytes_per_pixel;
- int line;
- int masks;
-
- /* Select correct masks and pixel size */
- if (image->bits_per_pixel == 8) {
- masks = 1;
- } else {
- masks = (image->red_mask|image->green_mask|image->blue_mask);
- }
- bytes_per_pixel = image->bits_per_pixel>>3;
-
- /* Shift to right line */
- im_data += image->bytes_per_line * (y - y_off);
- /* Shift to right pixel in the line */
- im_data += bytes_per_pixel * (x - x_off);
-
- /* Draw the cursor - proper loop */
- for (line = 0; line < FFMIN(20, (y_off + height) - y); line++) {
- uint8_t *cursor = im_data;
- int column;
- uint16_t bm_b;
- uint16_t bm_w;
-
- bm_b = mousePointerBlack[line];
- bm_w = mousePointerWhite[line];
-
- for (column = 0; column < FFMIN(16, (x_off + width) - x); column++) {
- apply_masks(cursor, ~(masks*(bm_b&1)), masks*(bm_w&1),
- image->bits_per_pixel);
- cursor += bytes_per_pixel;
- bm_b >>= 1;
- bm_w >>= 1;
- }
- im_data += image->bytes_per_line;
- }
- }
-}
-
-
-/**
- * Reads new data in the image structure.
- *
- * @param dpy X11 display to grab from
- * @param d
- * @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
- */
-static int
-xget_zpixmap(Display *dpy, Drawable d, XImage *image, int x, int y)
-{
- xGetImageReply rep;
- xGetImageReq *req;
- long nbytes;
-
- if (!image) {
- return 0;
- }
-
- 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;
-
- if (!_XReply(dpy, (xReply *)&rep, 0, xFalse) || !rep.length) {
- UnlockDisplay(dpy);
- SyncHandle();
- return 0;
- }
-
- nbytes = (long)rep.length << 2;
- _XReadPad(dpy, image->data, nbytes);
-
- UnlockDisplay(dpy);
- SyncHandle();
- return 1;
-}
-
-/**
- * Grabs a frame from x11 (public device demuxer API).
- *
- * @param s1 Context from avformat core
- * @param pkt Packet holding the brabbed frame
- * @return frame size in bytes
- */
-static int
-x11grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
-{
- x11_grab_t *s = s1->priv_data;
- Display *dpy = s->dpy;
- XImage *image = s->image;
- int x_off = s->x_off;
- int y_off = s->y_off;
-
- int64_t curtime, delay;
- struct timespec ts;
-
- /* Calculate the time of the next frame */
- s->time_frame += INT64_C(1000000);
-
- /* wait based on the frame rate */
- for(;;) {
- curtime = av_gettime();
- delay = s->time_frame * av_q2d(s->time_base) - curtime;
- if (delay <= 0) {
- if (delay < INT64_C(-1000000) * av_q2d(s->time_base)) {
- s->time_frame += INT64_C(1000000);
- }
- break;
- }
- ts.tv_sec = delay / 1000000;
- ts.tv_nsec = (delay % 1000000) * 1000;
- nanosleep(&ts, NULL);
- }
-
- if (av_new_packet(pkt, s->frame_size) < 0) {
- return AVERROR(EIO);
- }
-
- pkt->pts = curtime;
-
- if(s->use_shm) {
- if (!XShmGetImage(dpy, RootWindow(dpy, DefaultScreen(dpy)), image, x_off, y_off, AllPlanes)) {
- av_log (s1, AV_LOG_INFO, "XShmGetImage() failed\n");
- }
- } else {
- if (!xget_zpixmap(dpy, RootWindow(dpy, DefaultScreen(dpy)), image, x_off, y_off)) {
- av_log (s1, AV_LOG_INFO, "XGetZPixmap() failed\n");
- }
- }
-
- {
- int pointer_x, pointer_y;
- get_pointer_coordinates(&pointer_x, &pointer_y, dpy, s1);
- paint_mouse_pointer(image, s, pointer_x, pointer_y);
- }
-
-
- /* XXX: avoid memcpy */
- memcpy(pkt->data, image->data, s->frame_size);
- return s->frame_size;
-}
-
-/**
- * Closes x11 frame grabber (public device demuxer API).
- *
- * @param s1 Context from avformat core
- * @return 0 success, !0 failure
- */
-static int
-x11grab_read_close(AVFormatContext *s1)
-{
- x11_grab_t *x11grab = s1->priv_data;
-
- /* 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;
- }
-
- /* Free X11 display */
- XCloseDisplay(x11grab->dpy);
- return 0;
-}
-
-/** x11 grabber device demuxer declaration */
-AVInputFormat x11_grab_device_demuxer =
-{
- "x11grab",
- "X11grab",
- sizeof(x11_grab_t),
- NULL,
- x11grab_read_header,
- x11grab_read_packet,
- x11grab_read_close,
- .flags = AVFMT_NOFILE,
-};
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