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// Copyright 2013 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_ENCODER_VPX_H_
#define REMOTING_CODEC_VIDEO_ENCODER_VPX_H_
#include "base/callback.h"
#include "base/time/time.h"
#include "remoting/codec/scoped_vpx_codec.h"
#include "remoting/codec/video_encoder.h"
#include "remoting/codec/video_encoder_helper.h"
typedef struct vpx_image vpx_image_t;
namespace webrtc {
class DesktopRegion;
class DesktopSize;
} // namespace webrtc
namespace remoting {
class VideoEncoderVpx : public VideoEncoder {
public:
// Create encoder for the specified protocol.
static scoped_ptr<VideoEncoderVpx> CreateForVP8();
static scoped_ptr<VideoEncoderVpx> CreateForVP9();
virtual ~VideoEncoderVpx();
// VideoEncoder interface.
virtual void SetLosslessEncode(bool want_lossless) OVERRIDE;
virtual void SetLosslessColor(bool want_lossless) OVERRIDE;
virtual scoped_ptr<VideoPacket> Encode(
const webrtc::DesktopFrame& frame) OVERRIDE;
private:
explicit VideoEncoderVpx(bool use_vp9);
// Initializes the codec for frames of |size|. Returns true if successful.
bool Initialize(const webrtc::DesktopSize& size);
// Prepares |image_| for encoding. Writes updated rectangles into
// |updated_region|.
void PrepareImage(const webrtc::DesktopFrame& frame,
webrtc::DesktopRegion* updated_region);
// Updates the active map according to |updated_region|. Active map is then
// given to the encoder to speed up encoding.
void PrepareActiveMap(const webrtc::DesktopRegion& updated_region);
// True if the encoder should generate VP9, false for VP8.
bool use_vp9_;
// Options controlling VP9 encode quantization and color space.
// These are always off (false) for VP8.
bool lossless_encode_;
bool lossless_color_;
ScopedVpxCodec codec_;
base::TimeTicks timestamp_base_;
// VPX image and buffer to hold the actual YUV planes.
scoped_ptr<vpx_image_t> image_;
scoped_ptr<uint8[]> image_buffer_;
// Active map used to optimize out processing of un-changed macroblocks.
scoped_ptr<uint8[]> active_map_;
int active_map_width_;
int active_map_height_;
// Used to help initialize VideoPackets from DesktopFrames.
VideoEncoderHelper helper_;
DISALLOW_COPY_AND_ASSIGN(VideoEncoderVpx);
};
} // namespace remoting
#endif // REMOTING_CODEC_VIDEO_ENCODER_VP8_H_
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