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Diffstat (limited to 'remoting/codec/video_decoder_verbatim.h')
-rw-r--r-- | remoting/codec/video_decoder_verbatim.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/remoting/codec/video_decoder_verbatim.h b/remoting/codec/video_decoder_verbatim.h new file mode 100644 index 0000000..8c25013 --- /dev/null +++ b/remoting/codec/video_decoder_verbatim.h @@ -0,0 +1,75 @@ +// 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_ |