diff options
Diffstat (limited to 'sys/v4l2/gstv4l2videooverlay.c')
-rw-r--r-- | sys/v4l2/gstv4l2videooverlay.c | 492 |
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); - } -} |