1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef REMOTING_CLIENT_FRAME_PRODUCER_H_ 6 #define REMOTING_CLIENT_FRAME_PRODUCER_H_ 7 8 #include "base/callback_forward.h" 9 #include "third_party/skia/include/core/SkRect.h" 10 #include "third_party/skia/include/core/SkRegion.h" 11 #include "third_party/skia/include/core/SkSize.h" 12 13 namespace webrtc { 14 class DesktopFrame; 15 } // namespace webrtc 16 17 namespace remoting { 18 19 class FrameProducer { 20 public: 21 FrameProducer() {} 22 23 // Adds an image buffer to the pool of pending buffers for subsequent drawing. 24 // Once drawing is completed the buffer will be returned to the consumer via 25 // the FrameConsumer::ApplyBuffer() call. Alternatively an empty buffer could 26 // be returned via the FrameConsumer::ReturnBuffer() call. 27 // 28 // The passed buffer must be large enough to hold the whole clipping area. 29 virtual void DrawBuffer(webrtc::DesktopFrame* buffer) = 0; 30 31 // Requests repainting of the specified |region| of the frame as soon as 32 // possible. |region| is specified in output coordinates relative to 33 // the beginning of the frame. 34 virtual void InvalidateRegion(const SkRegion& region) = 0; 35 36 // Requests returing of all pending buffers to the consumer via 37 // FrameConsumer::ReturnBuffer() calls. 38 virtual void RequestReturnBuffers(const base::Closure& done) = 0; 39 40 // Notifies the producer of changes to the output view size or clipping area. 41 // Implementations must cope with empty |view_size| or |clip_area|. 42 virtual void SetOutputSizeAndClip(const SkISize& view_size, 43 const SkIRect& clip_area) = 0; 44 45 // Returns a reference to the shape of the most recently drawn buffer. 46 virtual const SkRegion* GetBufferShape() = 0; 47 48 protected: 49 virtual ~FrameProducer() {} 50 51 private: 52 DISALLOW_COPY_AND_ASSIGN(FrameProducer); 53 }; 54 55 } // namespace remoting 56 57 #endif // REMOTING_CLIENT_FRAME_PRODUCER_H_ 58
