xcommon.c

uclinux 下的vlc播放器源代码

                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 2;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;

                case Button3:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 4;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;

                case Button4:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 8;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;

                case Button5:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int |= 16;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;
            }
        }
        /* Mouse release */
        else if( xevent.type == ButtonRelease )
        {
            switch( ((XButtonEvent *)&xevent)->button )
            {
                case Button1:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int &= ~1;
                    var_Set( p_vout, "mouse-button-down", val );

                    val.b_bool = VLC_TRUE;
                    var_Set( p_vout, "mouse-clicked", val );
                    break;

                case Button2:
                    {
                        playlist_t *p_playlist;

                        var_Get( p_vout, "mouse-button-down", &val );
                        val.i_int &= ~2;
                        var_Set( p_vout, "mouse-button-down", val );

                        p_playlist = vlc_object_find( p_vout,
                                                      VLC_OBJECT_PLAYLIST,
                                                      FIND_ANYWHERE );
                        if( p_playlist != NULL )
                        {
                            vlc_value_t val;
                            var_Get( p_playlist, "intf-show", &val );
                            val.b_bool = !val.b_bool;
                            var_Set( p_playlist, "intf-show", val );
                            vlc_object_release( p_playlist );
                        }
                    }
                    break;

                case Button3:
                    {
                        intf_thread_t *p_intf;
                        playlist_t *p_playlist;

                        var_Get( p_vout, "mouse-button-down", &val );
                        val.i_int &= ~4;
                        var_Set( p_vout, "mouse-button-down", val );
                        p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
                                                          FIND_ANYWHERE );
                        if( p_intf )
                        {
                            p_intf->b_menu_change = 1;
                            vlc_object_release( p_intf );
                        }

                        p_playlist = vlc_object_find( p_vout,
                                                      VLC_OBJECT_PLAYLIST,
                                                      FIND_ANYWHERE );
                        if( p_playlist != NULL )
                        {
                            vlc_value_t val; val.b_bool = VLC_TRUE;
                            var_Set( p_playlist, "intf-popupmenu", val );
                            vlc_object_release( p_playlist );
                        }
                    }
                    break;

                case Button4:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int &= ~8;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;

                case Button5:
                    var_Get( p_vout, "mouse-button-down", &val );
                    val.i_int &= ~16;
                    var_Set( p_vout, "mouse-button-down", val );
                    break;

            }
        }
        /* Mouse move */
        else if( xevent.type == MotionNotify )
        {
            unsigned int i_width, i_height, i_x, i_y;
            vlc_value_t val;

            /* somewhat different use for vout_PlacePicture:
             * here the values are needed to give to mouse coordinates
             * in the original picture space */
            vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
                               p_vout->p_sys->p_win->i_height,
                               &i_x, &i_y, &i_width, &i_height );

            val.i_int = ( xevent.xmotion.x - i_x ) *
                p_vout->fmt_in.i_visible_width / i_width +
                p_vout->fmt_in.i_x_offset;
            var_Set( p_vout, "mouse-x", val );
            val.i_int = ( xevent.xmotion.y - i_y ) *
                p_vout->fmt_in.i_visible_height / i_height +
                p_vout->fmt_in.i_y_offset;
            var_Set( p_vout, "mouse-y", val );

            val.b_bool = VLC_TRUE;
            var_Set( p_vout, "mouse-moved", val );

            p_vout->p_sys->i_time_mouse_last_moved = mdate();
            if( ! p_vout->p_sys->b_mouse_pointer_visible )
            {
                ToggleCursor( p_vout );
            }
        }
        else if( xevent.type == ReparentNotify /* XXX: why do we get this? */
                  || xevent.type == MapNotify
                  || xevent.type == UnmapNotify )
        {
            /* Ignore these events */
        }
        else /* Other events */
        {
            msg_Warn( p_vout, "unhandled event %d received", xevent.type );
        }
    }

    /* Handle events for video output sub-window */
    while( XCheckWindowEvent( p_vout->p_sys->p_display,
                              p_vout->p_sys->p_win->video_window,
                              ExposureMask, &xevent ) == True )
    {
        /* Window exposed (only handled if stream playback is paused) */
        if( xevent.type == Expose )
        {
            if( ((XExposeEvent *)&xevent)->count == 0 )
            {
                /* (if this is the last a collection of expose events...) */
#if 0
                if( p_vout->p_vlc->p_input_bank->pp_input[0] != NULL )
                {
                    if( PAUSE_S == p_vout->p_vlc->p_input_bank->pp_input[0]
                                                   ->stream.control.i_status )
                    {
                        /* XVideoDisplay( p_vout )*/;
                    }
                }
#endif
            }
        }
    }

    /* ClientMessage event - only WM_PROTOCOLS with WM_DELETE_WINDOW data
     * are handled - according to the man pages, the format is always 32
     * in this case */
    while( XCheckTypedEvent( p_vout->p_sys->p_display,
                             ClientMessage, &xevent ) )
    {
        if( (xevent.xclient.message_type == p_vout->p_sys->p_win->wm_protocols)
               && ((Atom)xevent.xclient.data.l[0]
                     == p_vout->p_sys->p_win->wm_delete_window ) )
        {
            /* the user wants to close the window */
            playlist_t * p_playlist =
                (playlist_t *)vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
                                               FIND_ANYWHERE );
            if( p_playlist != NULL )
            {
                playlist_Stop( p_playlist );
                vlc_object_release( p_playlist );
            }
        }
    }

    /*
     * Fullscreen Change
     */
    if ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
    {
        vlc_value_t val;

        /* Update the object variable and trigger callback */
        val.b_bool = !p_vout->b_fullscreen;

        /*
         * FIXME FIXME FIXME FIXME: EXPLICIT HACK.
         * On the one hand, we cannot hold the lock while triggering a
         * callback, as it causes a deadlock with video-on-top handling.
         * On the other hand, we have to lock while triggering the
         * callback to:
         *  1/ make sure video-on-top remains in sync with fullscreen
         *    (i.e. unlocking creates a race condition if fullscreen is
         *     switched on and off VERY FAST).
         *  2/ avoid possible corruption bugs if another thread gets the
         *     mutex and modifies our data in-between.
         *
         * This is obviously contradictory. Correct solutions may include:
         *  - putting the fullscreen NAND video-on-top logic out of libvlc,
         *    back into the video output plugins (ugly code duplication...),
         *  - serializing fullscreen and video-on-top handling properly
         *    instead of doing it via the fullscreen callback. That's got to
         *    be the correct one.
         */
#ifdef MODULE_NAME_IS_xvmc
        xvmc_context_reader_unlock( &p_vout->p_sys->xvmc_lock );
#endif
        vlc_mutex_unlock( &p_vout->p_sys->lock );

        var_Set( p_vout, "fullscreen", val );

        vlc_mutex_lock( &p_vout->p_sys->lock );
#ifdef MODULE_NAME_IS_xvmc
        xvmc_context_reader_lock( &p_vout->p_sys->xvmc_lock );
#endif

        ToggleFullScreen( p_vout );
        p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
    }

    if( p_vout->i_changes & VOUT_CROP_CHANGE ||
        p_vout->i_changes & VOUT_ASPECT_CHANGE )
    {
        p_vout->i_changes &= ~VOUT_CROP_CHANGE;
        p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;

        p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
        p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
        p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
        p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
        p_vout->fmt_out.i_aspect = p_vout->fmt_in.i_aspect;
        p_vout->fmt_out.i_sar_num = p_vout->fmt_in.i_sar_num;
        p_vout->fmt_out.i_sar_den = p_vout->fmt_in.i_sar_den;
        p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;

        p_vout->i_changes |= VOUT_SIZE_CHANGE;
    }

    /*
     * Size change
     *
     * (Needs to be placed after VOUT_FULLSREEN_CHANGE because we can activate
     *  the size flag inside the fullscreen routine)
     */
    if( p_vout->i_changes & VOUT_SIZE_CHANGE )
    {
        unsigned int i_width, i_height, i_x, i_y;

        p_vout->i_changes &= ~VOUT_SIZE_CHANGE;

#ifdef MODULE_NAME_IS_x11
        /* We need to signal the vout thread about the size change because it
         * is doing the rescaling */
        p_vout->i_changes |= VOUT_SIZE_CHANGE;
#endif

        vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
                           p_vout->p_sys->p_win->i_height,
                           &i_x, &i_y, &i_width, &i_height );

        XMoveResizeWindow( p_vout->p_sys->p_display,
                           p_vout->p_sys->p_win->video_window,
                           i_x, i_y, i_width, i_height );
    }

    /* Autohide Cursour */
    if( mdate() - p_vout->p_sys->i_time_mouse_last_moved > 2000000 )
    {
        /* Hide the mouse automatically */
        if( p_vout->p_sys->b_mouse_pointer_visible )
        {
            ToggleCursor( p_vout );
        }
    }

    vlc_mutex_unlock( &p_vout->p_sys->lock );

    return 0;
}

/*****************************************************************************
 * EndVideo: terminate X11 video thread output method
 *****************************************************************************
 * Destroy the X11 XImages created by Init. It is called at the end of
 * the thread, but also each time the window is resized.
 *****************************************************************************/
static void EndVideo( vout_thread_t *p_vout )
{
    int i_index;

    /* Free the direct buffers we allocated */
    for( i_index = I_OUTPUTPICTURES ; i_index ; )
    {
        i_index--;
        FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
    }
}

/* following functions are local */

/*****************************************************************************
 * CreateWindow: open and set-up X11 main window
 *****************************************************************************/
static int CreateWindow( vout_thread_t *p_vout, x11_window_t *p_win )
{
    XSizeHints              xsize_hints;
    XSetWindowAttributes    xwindow_attributes;
    XGCValues               xgcvalues;
    XEvent                  xevent;

    vlc_bool_t              b_expose = VLC_FALSE;
    vlc_bool_t              b_configure_notify = VLC_FALSE;
    vlc_bool_t              b_map_notify = VLC_FALSE;
    vlc_value_t             val;

    /* Prepare window manager hints and properties */
    p_win->wm_protocols =
             XInternAtom( p_vout->p_sys->p_display, "WM_PROTOCOLS", True );
    p_win->wm_delete_window =
             XInternAtom( p_vout->p_sys->p_display, "WM_DELETE_WINDOW", True );

    /* Never have a 0-pixel-wide window */
    xsize_hints.min_width = 2;
    xsize_hints.min_height = 1;

    /* Prepare window attributes */
    xwindow_attributes.backing_store = Always;       /* save the hidden part */