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Text File | 2007-07-18 | 7KB | 195 lines

/*
 *  PAPER    ON   ERVIS  NPAPER ISION  PE  IS ON  PERVI IO  APER  SI  PA
 *  AP  VI  ONPA  RV  IO PA     SI  PA ER  SI NP PE     ON AP  VI ION AP
 *  PERVI  ON  PE VISIO  APER   IONPA  RV  IO PA  RVIS  NP PE  IS ONPAPE
 *  ER     NPAPER IS     PE     ON  PE  ISIO  AP     IO PA ER  SI NP PER
 *  RV     PA  RV SI     ERVISI NP  ER   IO   PE VISIO  AP  VISI  PA  RV3D
 *  ______________________________________________________________________
 *  papervision3d.org • blog.papervision3d.org • osflash.org/papervision3d
 */

/*
 * Copyright 2006 (c) Carlos Ulloa Matesanz, noventaynueve.com.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

 /**
 * @author Patrick Pietens
 * @author John Grden
 * @author Carlos Ulloa
 *
 * @note Special thanks to Patrick Pietens for putting this together and flushing it out!
 */

// __________________________________________________________________________ VIDEO MATERIAL

package org.papervision3d.materials
{
    import flash.display.BitmapData;
    import flash.events.NetStatusEvent;
    import flash.geom.Matrix;
    import flash.media.Video;
    import flash.net.NetStream;

    /*
    * The VideoMaterial class creates a texture from an existing Video instance and is for use with a Video and NetStream objects with an RTMP stream.
    * <p/>
    * The texture can be animated and/or transparent.
    * <p/>
    * Materials collects data about how objects appear when rendered.
    */
    public class VideoStreamMaterial extends MovieMaterial
    {
        // ______________________________________________________________________ PUBLIC

        /**
         * The NetStream and Vdeo that are used as a texture.
         */
        public var stream:NetStream;
        public var video:Video;


        // ______________________________________________________________________ NEW

        /**
        * The MovieMaterial class creates a texture from an existing Video instance.
        *
        * @param    video            A video object that display the FLV file
        * @param    stream            Stream that is used to play the FLV file
        * @param    initObject        [optional] - An object that contains additional properties with which to populate the newly created material.
        */
        public function VideoStreamMaterial ( video:Video=null, stream:NetStream=null, initObject:Object=null )
        {
            // store the values
            this.stream = stream;
            this.video = video;

            // init the material with a listener for the NS object
            initMaterial ( video, stream );

            super ( video, initObject );
        }


        // ______________________________________________________________________ INITIALISE

        /**
         * Executes when the VideoMaterial is instantiated
         */
        private function initMaterial ( video:Video, stream:NetStream ):void
        {
            stream.addEventListener ( NetStatusEvent.NET_STATUS, onStreamStatus );
        }


        // ______________________________________________________________________ CREATE BITMAP

        /**
         * Creates the bitmap that is used as a texture
         *
         * @param The asset that is used as a texture.
         */
        protected override function createBitmap( asset:* ):BitmapData
        {
            // Dispose of previous bitmap
            if( this.bitmap ) this.bitmap.dispose();

            // Create new bitmap
            this.bitmap = correctBitmap( new BitmapData( asset.width, asset.height, this.movieTransparent ), true );

            // Draw bitmap
            this.updateBitmap();

            return this.bitmap;
        }


        // ______________________________________________________________________ UPDATE

        /**
        * Updates Video Bitmap
        *
        * Draws the current Video frame onto bitmap.
        */
        public override function updateBitmap ():void
        {
            // copies the scale properties of the video
            var myMatrix:Matrix = new Matrix();
            myMatrix.scale( this.video.scaleX, this.video.scaleY );

            // Fills the rectangle with a background color
            this.bitmap.fillRect ( this.bitmap.rect, this.fillColor );

            // Due to security reasons the BitmapData cannot access RTMP content like a NetStream using a FMS server.
            // The next three lines are a simple but effective workaround to get pass Flash its security sandbox.
            this.video.attachNetStream ( null );
            this.bitmap.draw( this.video, myMatrix, this.video.transform.colorTransform );
            this.video.attachNetStream ( this.stream );
        }


        // ______________________________________________________________________ STREAM STATUS

        /**
        * Executes when the status of the NetStream object changes
        *
        * @param Event that invoked the handler
        */
        private function onStreamStatus ( event:NetStatusEvent ):void
        {
            switch ( event.info.code )
            {
                case "NetStream.Play.Start":
                    animated = true;
                    break;
                case "NetStream.Unpause.Notify":
                    animated = true;
                    break;
                case "NetStream.Play.Failed":
                    animated = false;
                    break;
                case "NetStream.Play.Stop":
                    animated = false;
                    break;
                case "NetStream.Play.StreamNotFound":
                    animated = false;
                    break;
                case "NetStream.Pause.Notify":
                    animated = false;
                    break;
            }
        }

        // ______________________________________________________________________ TO STRING

        /**
        * Returns a string value representing the material properties in the specified VideoMaterial object.
        *
        * @return    A string.
        */
        public override function toString():String
        {
            return 'Texture:' + this.texture;
        }
    }
}