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Diffstat (limited to 'sys/v4l2/gstv4l2videooverlay.c')
-rw-r--r--sys/v4l2/gstv4l2videooverlay.c492
1 files changed, 0 insertions, 492 deletions
diff --git a/sys/v4l2/gstv4l2videooverlay.c b/sys/v4l2/gstv4l2videooverlay.c
deleted file mode 100644
index 66d2109be..000000000
--- a/sys/v4l2/gstv4l2videooverlay.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/* GStreamer
- * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
- * 2006 Edgard Lima <edgard.lima@indt.org.br>
- *
- * gstv4l2video_overlay.c: X-based overlay interface implementation for V4L2
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <string.h>
-#include <gst/gst.h>
-#include <X11/X.h>
-#include <X11/Xlib.h>
-#include <X11/extensions/Xv.h>
-#include <X11/extensions/Xvlib.h>
-#include <sys/stat.h>
-/* for XkbKeycodeToKeysym */
-#include <X11/XKBlib.h>
-
-#include <gst/video/navigation.h>
-
-#include "gstv4l2videooverlay.h"
-#include "gstv4l2object.h"
-#include "v4l2_calls.h"
-
-#include "gst/gst-i18n-plugin.h"
-#include <gst/glib-compat-private.h>
-
-struct _GstV4l2Xv
-{
- Display *dpy;
- gint port, idle_id, event_id;
- GMutex mutex; /* to serialize calls to X11 */
-};
-
-GST_DEBUG_CATEGORY_STATIC (v4l2xv_debug);
-#define GST_CAT_DEFAULT v4l2xv_debug
-
-void
-gst_v4l2_video_overlay_interface_init (GstVideoOverlayInterface * iface)
-{
- GST_DEBUG_CATEGORY_INIT (v4l2xv_debug, "v4l2xv", 0,
- "V4L2 GstVideoOverlay interface debugging");
-}
-
-static void
-gst_v4l2_video_overlay_open (GstV4l2Object * v4l2object)
-{
- struct stat s;
- GstV4l2Xv *v4l2xv;
- const gchar *name = g_getenv ("DISPLAY");
- unsigned int ver, rel, req, ev, err, anum;
- int i, id = 0, first_id = 0, min;
- XvAdaptorInfo *ai;
- Display *dpy;
-
- /* we need a display, obviously */
- if (!name || !(dpy = XOpenDisplay (name))) {
- GST_WARNING_OBJECT (v4l2object->element,
- "No $DISPLAY set or failed to open - no overlay");
- return;
- }
-
- /* First let's check that XVideo extension is available */
- if (!XQueryExtension (dpy, "XVideo", &i, &i, &i)) {
- GST_WARNING_OBJECT (v4l2object->element,
- "Xv extension not available - no overlay");
- XCloseDisplay (dpy);
- return;
- }
-
- /* find port that belongs to this device */
- if (XvQueryExtension (dpy, &ver, &rel, &req, &ev, &err) != Success) {
- GST_WARNING_OBJECT (v4l2object->element,
- "Xv extension not supported - no overlay");
- XCloseDisplay (dpy);
- return;
- }
- if (XvQueryAdaptors (dpy, DefaultRootWindow (dpy), &anum, &ai) != Success) {
- GST_WARNING_OBJECT (v4l2object->element, "Failed to query Xv adaptors");
- XCloseDisplay (dpy);
- return;
- }
- if (fstat (v4l2object->video_fd, &s) < 0) {
- GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, NOT_FOUND,
- (_("Cannot identify device '%s'."), v4l2object->videodev),
- GST_ERROR_SYSTEM);
- XCloseDisplay (dpy);
- return;
- }
- min = s.st_rdev & 0xff;
- for (i = 0; i < anum; i++) {
- GST_DEBUG_OBJECT (v4l2object->element, "found adapter: %s", ai[i].name);
- if (!strcmp (ai[i].name, "video4linux2") ||
- !strcmp (ai[i].name, "video4linux")) {
- if (first_id == 0)
- first_id = ai[i].base_id;
-
- GST_DEBUG_OBJECT (v4l2object->element,
- "first_id=%d, base_id=%lu, min=%d", first_id, ai[i].base_id, min);
-
- /* hmm... */
- if (first_id != 0 && ai[i].base_id == first_id + min)
- id = ai[i].base_id;
- }
- }
- XvFreeAdaptorInfo (ai);
-
- if (id == 0) {
- GST_WARNING_OBJECT (v4l2object->element,
- "Did not find XvPortID for device - no overlay");
- XCloseDisplay (dpy);
- return;
- }
-
- v4l2xv = g_new0 (GstV4l2Xv, 1);
- v4l2xv->dpy = dpy;
- v4l2xv->port = id;
- g_mutex_init (&v4l2xv->mutex);
- v4l2xv->idle_id = 0;
- v4l2xv->event_id = 0;
- v4l2object->xv = v4l2xv;
-
- if (v4l2object->xwindow_id) {
- gst_v4l2_video_overlay_set_window_handle (v4l2object,
- v4l2object->xwindow_id);
- }
-}
-
-static void
-gst_v4l2_video_overlay_close (GstV4l2Object * v4l2object)
-{
- GstV4l2Xv *v4l2xv = v4l2object->xv;
-
- if (!v4l2object->xv)
- return;
-
- if (v4l2object->xwindow_id) {
- gst_v4l2_video_overlay_set_window_handle (v4l2object, 0);
- }
-
- XCloseDisplay (v4l2xv->dpy);
- g_mutex_clear (&v4l2xv->mutex);
- if (v4l2xv->idle_id)
- g_source_remove (v4l2xv->idle_id);
- if (v4l2xv->event_id)
- g_source_remove (v4l2xv->event_id);
- g_free (v4l2xv);
- v4l2object->xv = NULL;
-}
-
-void
-gst_v4l2_video_overlay_start (GstV4l2Object * v4l2object)
-{
- if (v4l2object->xwindow_id) {
- gst_v4l2_video_overlay_open (v4l2object);
- }
-}
-
-void
-gst_v4l2_video_overlay_stop (GstV4l2Object * v4l2object)
-{
- gst_v4l2_video_overlay_close (v4l2object);
-}
-
-/* should be called with mutex held */
-static gboolean
-get_render_rect (GstV4l2Object * v4l2object, GstVideoRectangle * rect)
-{
- GstV4l2Xv *v4l2xv = v4l2object->xv;
- if (v4l2xv && v4l2xv->dpy && v4l2object->xwindow_id) {
- XWindowAttributes attr;
- XGetWindowAttributes (v4l2xv->dpy, v4l2object->xwindow_id, &attr);
- /* this is where we'd add support to maintain aspect ratio */
- rect->x = 0;
- rect->y = 0;
- rect->w = attr.width;
- rect->h = attr.height;
- return TRUE;
- } else {
- return FALSE;
- }
-}
-
-gboolean
-gst_v4l2_video_overlay_get_render_rect (GstV4l2Object * v4l2object,
- GstVideoRectangle * rect)
-{
- GstV4l2Xv *v4l2xv = v4l2object->xv;
- gboolean ret = FALSE;
- if (v4l2xv) {
- g_mutex_lock (&v4l2xv->mutex);
- ret = get_render_rect (v4l2object, rect);
- g_mutex_unlock (&v4l2xv->mutex);
- }
- return ret;
-}
-
-static void
-update_geometry (GstV4l2Object * v4l2object)
-{
- GstV4l2Xv *v4l2xv = v4l2object->xv;
- GstVideoRectangle rect;
- if (!get_render_rect (v4l2object, &rect))
- return;
- /* note: we don't pass in valid video x/y/w/h.. currently the xserver
- * doesn't need to know these, as they come from v4l2 by setting the
- * crop..
- */
- XvPutVideo (v4l2xv->dpy, v4l2xv->port, v4l2object->xwindow_id,
- DefaultGC (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy)),
- 0, 0, rect.w, rect.h, rect.x, rect.y, rect.w, rect.h);
-}
-
-static gboolean
-idle_refresh (gpointer data)
-{
- GstV4l2Object *v4l2object = GST_V4L2_OBJECT (data);
- GstV4l2Xv *v4l2xv = v4l2object->xv;
-
- GST_LOG_OBJECT (v4l2object->element, "idle refresh");
-
- if (v4l2xv) {
- g_mutex_lock (&v4l2xv->mutex);
-
- update_geometry (v4l2object);
-
- v4l2xv->idle_id = 0;
- g_mutex_unlock (&v4l2xv->mutex);
- }
-
- /* once */
- return FALSE;
-}
-
-
-static gboolean
-event_refresh (gpointer data)
-{
- GstV4l2Object *v4l2object = GST_V4L2_OBJECT (data);
- GstV4l2Xv *v4l2xv = v4l2object->xv;
-
- GST_LOG_OBJECT (v4l2object->element, "event refresh");
-
- if (v4l2xv) {
- XEvent e;
-
- g_mutex_lock (&v4l2xv->mutex);
-
- /* If the element supports navigation, collect the relavent input
- * events and push them upstream as navigation events
- */
- if (GST_IS_NAVIGATION (v4l2object->element)) {
- guint pointer_x = 0, pointer_y = 0;
- gboolean pointer_moved = FALSE;
-
- /* We get all pointer motion events, only the last position is
- * interesting.
- */
- while (XCheckWindowEvent (v4l2xv->dpy, v4l2object->xwindow_id,
- PointerMotionMask, &e)) {
- switch (e.type) {
- case MotionNotify:
- pointer_x = e.xmotion.x;
- pointer_y = e.xmotion.y;
- pointer_moved = TRUE;
- break;
- default:
- break;
- }
- }
- if (pointer_moved) {
- GST_DEBUG_OBJECT (v4l2object->element,
- "pointer moved over window at %d,%d", pointer_x, pointer_y);
- g_mutex_unlock (&v4l2xv->mutex);
- gst_navigation_send_mouse_event (GST_NAVIGATION (v4l2object->element),
- "mouse-move", 0, e.xbutton.x, e.xbutton.y);
- g_mutex_lock (&v4l2xv->mutex);
- }
-
- /* We get all events on our window to throw them upstream
- */
- while (XCheckWindowEvent (v4l2xv->dpy, v4l2object->xwindow_id,
- KeyPressMask | KeyReleaseMask |
- ButtonPressMask | ButtonReleaseMask, &e)) {
- KeySym keysym;
- const char *key_str = NULL;
-
- g_mutex_unlock (&v4l2xv->mutex);
-
- switch (e.type) {
- case ButtonPress:
- GST_DEBUG_OBJECT (v4l2object->element,
- "button %d pressed over window at %d,%d",
- e.xbutton.button, e.xbutton.x, e.xbutton.y);
- gst_navigation_send_mouse_event (GST_NAVIGATION
- (v4l2object->element), "mouse-button-press", e.xbutton.button,
- e.xbutton.x, e.xbutton.y);
- break;
- case ButtonRelease:
- GST_DEBUG_OBJECT (v4l2object->element,
- "button %d released over window at %d,%d",
- e.xbutton.button, e.xbutton.x, e.xbutton.y);
- gst_navigation_send_mouse_event (GST_NAVIGATION
- (v4l2object->element), "mouse-button-release", e.xbutton.button,
- e.xbutton.x, e.xbutton.y);
- break;
- case KeyPress:
- case KeyRelease:
- g_mutex_lock (&v4l2xv->mutex);
- keysym = XkbKeycodeToKeysym (v4l2xv->dpy, e.xkey.keycode, 0, 0);
- if (keysym != NoSymbol) {
- key_str = XKeysymToString (keysym);
- } else {
- key_str = "unknown";
- }
- g_mutex_unlock (&v4l2xv->mutex);
- GST_DEBUG_OBJECT (v4l2object->element,
- "key %d pressed over window at %d,%d (%s)",
- e.xkey.keycode, e.xkey.x, e.xkey.y, key_str);
- gst_navigation_send_key_event (GST_NAVIGATION (v4l2object->element),
- e.type == KeyPress ? "key-press" : "key-release", key_str);
- break;
- default:
- GST_DEBUG_OBJECT (v4l2object->element,
- "unhandled X event (%d)", e.type);
- }
-
- g_mutex_lock (&v4l2xv->mutex);
- }
- }
-
- /* Handle ConfigureNotify */
- while (XCheckWindowEvent (v4l2xv->dpy, v4l2object->xwindow_id,
- StructureNotifyMask, &e)) {
- switch (e.type) {
- case ConfigureNotify:
- update_geometry (v4l2object);
- break;
- default:
- break;
- }
- }
- g_mutex_unlock (&v4l2xv->mutex);
- }
-
- /* repeat */
- return TRUE;
-}
-
-void
-gst_v4l2_video_overlay_set_window_handle (GstV4l2Object * v4l2object,
- guintptr id)
-{
- GstV4l2Xv *v4l2xv;
- XID xwindow_id = id;
- gboolean change = (v4l2object->xwindow_id != xwindow_id);
-
- GST_LOG_OBJECT (v4l2object->element, "Setting XID to %lx",
- (gulong) xwindow_id);
-
- if (!v4l2object->xv && GST_V4L2_IS_OPEN (v4l2object))
- gst_v4l2_video_overlay_open (v4l2object);
-
- v4l2xv = v4l2object->xv;
-
- if (v4l2xv)
- g_mutex_lock (&v4l2xv->mutex);
-
- if (change) {
- if (v4l2object->xwindow_id && v4l2xv) {
- GST_DEBUG_OBJECT (v4l2object->element,
- "Deactivating old port %lx", v4l2object->xwindow_id);
-
- XvSelectPortNotify (v4l2xv->dpy, v4l2xv->port, 0);
- XvSelectVideoNotify (v4l2xv->dpy, v4l2object->xwindow_id, 0);
- XvStopVideo (v4l2xv->dpy, v4l2xv->port, v4l2object->xwindow_id);
- }
-
- v4l2object->xwindow_id = xwindow_id;
- }
-
- if (!v4l2xv || xwindow_id == 0) {
- if (v4l2xv)
- g_mutex_unlock (&v4l2xv->mutex);
- return;
- }
-
- if (change) {
- GST_DEBUG_OBJECT (v4l2object->element, "Activating new port %lx",
- xwindow_id);
-
- /* draw */
- XvSelectPortNotify (v4l2xv->dpy, v4l2xv->port, 1);
- XvSelectVideoNotify (v4l2xv->dpy, v4l2object->xwindow_id, 1);
- }
-
- update_geometry (v4l2object);
-
- if (v4l2xv->idle_id)
- g_source_remove (v4l2xv->idle_id);
- v4l2xv->idle_id = g_idle_add (idle_refresh, v4l2object);
- g_mutex_unlock (&v4l2xv->mutex);
-}
-
-/**
- * gst_v4l2_video_overlay_prepare_window_handle:
- * @v4l2object: the v4l2object
- * @required: %TRUE if display is required (ie. TRUE for v4l2sink, but
- * FALSE for any other element with optional overlay capabilities)
- *
- * Helper function to create a windo if none is set from the application.
- */
-void
-gst_v4l2_video_overlay_prepare_window_handle (GstV4l2Object * v4l2object,
- gboolean required)
-{
- GstVideoOverlay *overlay;
-
- if (!GST_V4L2_IS_OVERLAY (v4l2object))
- return;
-
- overlay = GST_VIDEO_OVERLAY (v4l2object->element);
- gst_video_overlay_prepare_window_handle (overlay);
-
- if (required && !v4l2object->xwindow_id) {
- GstV4l2Xv *v4l2xv;
- Window win;
- int width, height;
- long event_mask;
-
- if (!v4l2object->xv && GST_V4L2_IS_OPEN (v4l2object))
- gst_v4l2_video_overlay_open (v4l2object);
-
- v4l2xv = v4l2object->xv;
-
- /* if video_overlay is not supported, just bail */
- if (!v4l2xv)
- return;
-
- /* video_overlay is supported, but we don't have a window.. so create one */
- GST_DEBUG_OBJECT (v4l2object->element, "creating window");
-
- g_mutex_lock (&v4l2xv->mutex);
-
- width = XDisplayWidth (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy));
- height = XDisplayHeight (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy));
- GST_DEBUG_OBJECT (v4l2object->element, "dpy=%p", v4l2xv->dpy);
-
- win = XCreateSimpleWindow (v4l2xv->dpy,
- DefaultRootWindow (v4l2xv->dpy),
- 0, 0, width, height, 0, 0,
- XBlackPixel (v4l2xv->dpy, DefaultScreen (v4l2xv->dpy)));
-
- GST_DEBUG_OBJECT (v4l2object->element, "win=%lu", win);
-
- event_mask = ExposureMask | StructureNotifyMask;
- if (GST_IS_NAVIGATION (v4l2object->element)) {
- event_mask |= PointerMotionMask |
- KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask;
- }
- XSelectInput (v4l2xv->dpy, win, event_mask);
- v4l2xv->event_id = g_timeout_add (45, event_refresh, v4l2object);
-
- XMapRaised (v4l2xv->dpy, win);
-
- XSync (v4l2xv->dpy, FALSE);
-
- g_mutex_unlock (&v4l2xv->mutex);
-
- GST_DEBUG_OBJECT (v4l2object->element, "got window");
-
- gst_v4l2_video_overlay_set_window_handle (v4l2object, win);
- }
-}
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