Cast: Reshuffle files under media/cast

media/cast/video_sender/codecs/vp8/vp8_encoder.h

-// 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 MEDIA_CAST_VIDEO_SENDER_CODECS_VP8_VP8_ENCODER_H_
-#define MEDIA_CAST_VIDEO_SENDER_CODECS_VP8_VP8_ENCODER_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "base/time/time.h"
-#include "media/cast/cast_config.h"
-#include "media/cast/video_sender/software_video_encoder.h"
-#include "third_party/libvpx/source/libvpx/vpx/vpx_encoder.h"
-
-namespace media {
-class VideoFrame;
-}
-
-// VPX forward declaration.
-typedef struct vpx_codec_ctx vpx_enc_ctx_t;
-
-namespace media {
-namespace cast {
-
-const int kNumberOfVp8VideoBuffers = 3;
-
-class Vp8Encoder : public SoftwareVideoEncoder {
- public:
-  Vp8Encoder(const VideoSenderConfig& video_config, int max_unacked_frames);
-
-  virtual ~Vp8Encoder();
-
-  // Initialize the encoder before Encode() can be called. This method
-  // must be called on the thread that Encode() is called.
-  virtual void Initialize() OVERRIDE;
-
-  // Encode a raw image (as a part of a video stream).
-  virtual bool Encode(const scoped_refptr<media::VideoFrame>& video_frame,
-                      transport::EncodedFrame* encoded_image) OVERRIDE;
-
-  // Update the encoder with a new target bit rate.
-  virtual void UpdateRates(uint32 new_bitrate) OVERRIDE;
-
-  // Set the next frame to be a key frame.
-  virtual void GenerateKeyFrame() OVERRIDE;
-
-  virtual void LatestFrameIdToReference(uint32 frame_id) OVERRIDE;
-
- private:
-  enum Vp8Buffers {
-    kAltRefBuffer = 0,
-    kGoldenBuffer = 1,
-    kLastBuffer = 2,
-    kNoBuffer = 3  // Note: must be last.
-  };
-
-  void InitEncode(int number_of_cores);
-
-  // Calculate the max target in % for a keyframe.
-  uint32 MaxIntraTarget(uint32 optimal_buffer_size) const;
-
-  // Calculate which next Vp8 buffers to update with the next frame.
-  Vp8Buffers GetNextBufferToUpdate();
-
-  // Calculate which previous frame to reference.
-  uint32 GetLatestFrameIdToReference();
-
-  // Get encoder flags for our referenced encoder buffers.
-  void GetCodecReferenceFlags(vpx_codec_flags_t* flags);
-
-  // Get encoder flags for our encoder buffers to update with next frame.
-  void GetCodecUpdateFlags(Vp8Buffers buffer_to_update,
-                           vpx_codec_flags_t* flags);
-
-  const VideoSenderConfig cast_config_;
-  const bool use_multiple_video_buffers_;
-  const int max_number_of_repeated_buffers_in_a_row_;
-
-  // VP8 internal objects.
-  scoped_ptr<vpx_codec_enc_cfg_t> config_;
-  scoped_ptr<vpx_enc_ctx_t> encoder_;
-  vpx_image_t* raw_image_;
-
-  bool key_frame_requested_;
-  bool first_frame_received_;
-  base::TimeDelta first_frame_timestamp_;
-  uint32 last_encoded_frame_id_;
-  uint32 used_buffers_frame_id_[kNumberOfVp8VideoBuffers];
-  bool acked_frame_buffers_[kNumberOfVp8VideoBuffers];
-  Vp8Buffers last_used_vp8_buffer_;
-  int number_of_repeated_buffers_;
-
-  // This is bound to the thread where Initialize() is called.
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(Vp8Encoder);
-};
-
-}  // namespace cast
-}  // namespace media
-
-#endif  // MEDIA_CAST_VIDEO_SENDER_CODECS_VP8_VP8_ENCODER_H_