remoting/codec/video_decoder_vp8.h

   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_CODEC_VIDEO_DECODER_VP8_H_
   6 #define REMOTING_CODEC_VIDEO_DECODER_VP8_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "remoting/codec/video_decoder.h"
  10
  11 typedef struct vpx_codec_ctx vpx_codec_ctx_t;
  12 typedef struct vpx_image vpx_image_t;
  13
  14 namespace remoting {
  15
  16 class VideoDecoderVp8 : public VideoDecoder {
  17  public:
  18   VideoDecoderVp8();
  19   virtual ~VideoDecoderVp8();
  20
  21   // VideoDecoder implementations.
  22   virtual void Initialize(const SkISize& screen_size) OVERRIDE;
  23   virtual DecodeResult DecodePacket(const VideoPacket* packet) OVERRIDE;
  24   virtual bool IsReadyForData() OVERRIDE;
  25   virtual VideoPacketFormat::Encoding Encoding() OVERRIDE;
  26   virtual void Invalidate(const SkISize& view_size,
  27                           const SkRegion& region) OVERRIDE;
  28   virtual void RenderFrame(const SkISize& view_size,
  29                            const SkIRect& clip_area,
  30                            uint8* image_buffer,
  31                            int image_stride,
  32                            SkRegion* output_region) OVERRIDE;
  33
  34  private:
  35   enum State {
  36     kUninitialized,
  37     kReady,
  38     kError,
  39   };
  40
  41   // The internal state of the decoder.
  42   State state_;
  43
  44   vpx_codec_ctx_t* codec_;
  45
  46   // Pointer to the last decoded image.
  47   vpx_image_t* last_image_;
  48
  49   // The region updated that hasn't been copied to the screen yet.
  50   SkRegion updated_region_;
  51
  52   // Output dimensions.
  53   SkISize screen_size_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(VideoDecoderVp8);
  56 };
  57
  58 }  // namespace remoting
  59
  60 #endif  // REMOTING_CODEC_VIDEO_DECODER_VP8_H_