1 /* 2 * Copyright (C) 2012 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef WebExternalTextureLayerClient_h 27 #define WebExternalTextureLayerClient_h 28 29 #include "WebCommon.h" 30 #include "WebSize.h" 31 32 namespace blink { 33 34 class WebGraphicsContext3D; 35 class WebExternalBitmap; 36 struct WebExternalTextureMailbox; 37 38 class BLINK_PLATFORM_EXPORT WebExternalTextureLayerClient { 39 public: 40 // Returns true and provides a mailbox if a new frame is available. If the WebExternalBitmap 41 // isn't 0, then it should also be filled in with the contents of this frame. 42 // Returns false if no new data is available and the old mailbox and bitmap are to be reused. 43 virtual bool prepareMailbox(WebExternalTextureMailbox*, WebExternalBitmap* = 0) = 0; 44 45 // Notifies the client when a mailbox is no longer in use by the compositor and provides 46 // a sync point to wait on before the mailbox could be consumes again by the client. 47 virtual void mailboxReleased(const WebExternalTextureMailbox&) = 0; 48 49 protected: ~WebExternalTextureLayerClient()50 virtual ~WebExternalTextureLayerClient() { } 51 }; 52 53 } // namespace blink 54 55 #endif // WebExternalTextureLayerClient_h 56