| // 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_VP8_H_ |
| #define REMOTING_CODEC_VIDEO_DECODER_VP8_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "remoting/codec/video_decoder.h" |
| |
| typedef struct vpx_codec_ctx vpx_codec_ctx_t; |
| typedef struct vpx_image vpx_image_t; |
| |
| namespace remoting { |
| |
| class VideoDecoderVp8 : public VideoDecoder { |
| public: |
| VideoDecoderVp8(); |
| virtual ~VideoDecoderVp8(); |
| |
| // VideoDecoder implementations. |
| virtual void Initialize(const SkISize& screen_size) OVERRIDE; |
| virtual DecodeResult DecodePacket(const VideoPacket* packet) OVERRIDE; |
| virtual bool IsReadyForData() 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; |
| virtual const SkRegion* GetImageShape() OVERRIDE; |
| |
| private: |
| enum State { |
| kUninitialized, |
| kReady, |
| kError, |
| }; |
| |
| // Fills the rectangle |rect| with the given ARGB color |color| in |buffer|. |
| void FillRect(uint8* buffer, int stride, const SkIRect& rect, uint32 color); |
| |
| // Calculates the difference between the desktop shape regions in two |
| // consecutive frames and updates |updated_region_| and |transparent_region_| |
| // accordingly. |
| void UpdateImageShapeRegion(SkRegion* new_desktop_shape); |
| |
| // The internal state of the decoder. |
| State state_; |
| |
| vpx_codec_ctx_t* codec_; |
| |
| // Pointer to the last decoded image. |
| vpx_image_t* last_image_; |
| |
| // The region updated that hasn't been copied to the screen yet. |
| SkRegion updated_region_; |
| |
| // Output dimensions. |
| SkISize screen_size_; |
| |
| // The region occupied by the top level windows. |
| SkRegion desktop_shape_; |
| |
| // The region that should be make transparent. |
| SkRegion transparent_region_; |
| |
| DISALLOW_COPY_AND_ASSIGN(VideoDecoderVp8); |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_CODEC_VIDEO_DECODER_VP8_H_ |