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// Copyright (c) 2011 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_BASE_DECODER_VP8_H_
#define REMOTING_BASE_DECODER_VP8_H_
#include "remoting/base/decoder.h"
typedef struct vpx_codec_ctx vpx_codec_ctx_t;
typedef struct vpx_image vpx_image_t;
namespace remoting {
class DecoderVp8 : public Decoder {
public:
DecoderVp8();
virtual ~DecoderVp8();
// Decoder implementations.
virtual void Initialize(scoped_refptr<media::VideoFrame> frame);
virtual DecodeResult DecodePacket(const VideoPacket* packet);
virtual void GetUpdatedRects(UpdatedRects* rects);
virtual bool IsReadyForData();
virtual void Reset();
virtual VideoPacketFormat::Encoding Encoding();
virtual void SetScaleRatios(double horizontal_ratio, double vertical_ratio);
virtual void SetClipRect(const gfx::Rect& clip_rect);
virtual void RefreshRects(const std::vector<gfx::Rect>& rects);
private:
enum State {
kUninitialized,
kReady,
kError,
};
// Return true if scaling is enabled
bool DoScaling() const;
// Perform color space conversion on the specified rectangles.
// Write the updated rectangles to |output_rects|.
void ConvertRects(const UpdatedRects& rects,
UpdatedRects* output_rects);
// Perform scaling and color space conversion on the specified
// rectangles.
// Write the updated rectangles to |output_rects|.
void ScaleAndConvertRects(const UpdatedRects& rects,
UpdatedRects* output_rects);
// The internal state of the decoder.
State state_;
// The video frame to write to.
scoped_refptr<media::VideoFrame> frame_;
vpx_codec_ctx_t* codec_;
// Pointer to the last decoded image.
vpx_image_t* last_image_;
// Record the updated rects in the last decode.
UpdatedRects updated_rects_;
// Clipping rect for the output of the decoder.
gfx::Rect clip_rect_;
// Scale factors of the decoded output.
double horizontal_scale_ratio_;
double vertical_scale_ratio_;
DISALLOW_COPY_AND_ASSIGN(DecoderVp8);
};
} // namespace remoting
#endif // REMOTING_BASE_DECODER_VP8_H_
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