1 /* 2 * libjingle 3 * Copyright 2004 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_MEDIA_BASE_VIDEORENDERER_H_ 29 #define TALK_MEDIA_BASE_VIDEORENDERER_H_ 30 31 #if !defined(NDEBUG) 32 #include <string> 33 #endif 34 35 #include "webrtc/base/sigslot.h" 36 37 namespace cricket { 38 39 class VideoFrame; 40 41 // Abstract interface for rendering VideoFrames. 42 class VideoRenderer { 43 public: ~VideoRenderer()44 virtual ~VideoRenderer() {} 45 // Called when the video has changed size. 46 // TODO(nisse): This method is not really used, and should be 47 // deleted. Provide a default do-nothing implementation, to easy the 48 // transition as the method is deleted in subclasses, in particular, 49 // chrome's MockVideoRenderer class. SetSize(int width,int height,int reserved)50 virtual bool SetSize(int width, int height, int reserved) { return true; }; 51 // Called when a new frame is available for display. 52 virtual bool RenderFrame(const VideoFrame *frame) = 0; 53 54 #if !defined(NDEBUG) 55 // Allow renderer dumping out rendered frames. SetDumpPath(const std::string & path)56 virtual bool SetDumpPath(const std::string &path) { return true; } 57 #endif 58 }; 59 60 } // namespace cricket 61 62 #endif // TALK_MEDIA_BASE_VIDEORENDERER_H_ 63