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+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef REMOTING_CODEC_VIDEO_DECODER_VERBATIM_H_
+#define REMOTING_CODEC_VIDEO_DECODER_VERBATIM_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "remoting/codec/video_decoder.h"
+
+namespace remoting {
+
+// Video decoder implementations that decodes video packet encoded by
+// VideoEncoderVerbatim. It just copies data from incoming packets to the
+// video frames.
+class VideoDecoderVerbatim : public VideoDecoder {
+ public:
+ virtual ~VideoDecoderVerbatim();
+
+ VideoDecoderVerbatim();
+
+ // VideoDecoder implementation.
+ virtual bool IsReadyForData() OVERRIDE;
+ virtual void Initialize(const SkISize& screen_size) OVERRIDE;
+ virtual DecodeResult DecodePacket(const VideoPacket* packet) OVERRIDE;
+ virtual VideoPacketFormat::Encoding Encoding() OVERRIDE;
+ virtual void Invalidate(const SkISize& view_size,
+ const SkRegion& region) OVERRIDE;
+ virtual void RenderFrame(const SkISize& view_size,
+ const SkIRect& clip_area,
+ uint8* image_buffer,
+ int image_stride,
+ SkRegion* output_region) OVERRIDE;
+
+ private:
+ enum State {
+ kUninitialized,
+ kReady,
+ kProcessing,
+ kPartitionDone,
+ kDone,
+ kError,
+ };
+
+ // Helper method. Called from DecodePacket to updated state of the decoder.
+ void UpdateStateForPacket(const VideoPacket* packet);
+
+ // The internal state of the decoder.
+ State state_;
+
+ // Keeps track of the updating rect.
+ SkIRect clip_;
+
+ // The position in the row that we are updating.
+ int row_pos_;
+
+ // The current row in the rect that we are updaing.
+ int row_y_;
+
+ // The region updated that hasn't been copied to the screen yet.
+ SkRegion updated_region_;
+
+ // Size of the remote screen.
+ SkISize screen_size_;
+
+ // The bitmap holding the remote screen bits.
+ scoped_array<uint8> screen_buffer_;
+
+ DISALLOW_COPY_AND_ASSIGN(VideoDecoderVerbatim);
+};
+
+} // namespace remoting
+
+#endif // REMOTING_CODEC_VIDEO_DECODER_VERBATIM_H_