media/cast/sender/software_video_encoder.h

   1 // Copyright 2014 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 MEDIA_CAST_SENDER_SOFTWARE_VIDEO_ENCODER_H_
   6 #define MEDIA_CAST_SENDER_SOFTWARE_VIDEO_ENCODER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10
  11 namespace media {
  12 class VideoFrame;
  13 }
  14
  15 namespace media {
  16 namespace cast {
  17 struct EncodedFrame;
  18
  19 class SoftwareVideoEncoder {
  20  public:
  21   virtual ~SoftwareVideoEncoder() {}
  22
  23   // Initialize the encoder before Encode() can be called. This method
  24   // must be called on the thread that Encode() is called.
  25   virtual void Initialize() = 0;
  26
  27   // Encode a raw image (as a part of a video stream).
  28   virtual bool Encode(const scoped_refptr<media::VideoFrame>& video_frame,
  29                       EncodedFrame* encoded_image) = 0;
  30
  31   // Update the encoder with a new target bit rate.
  32   virtual void UpdateRates(uint32 new_bitrate) = 0;
  33
  34   // Set the next frame to be a key frame.
  35   virtual void GenerateKeyFrame() = 0;
  36
  37   // Set the last frame to reference.
  38   virtual void LatestFrameIdToReference(uint32 frame_id) = 0;
  39 };
  40
  41 }  // namespace cast
  42 }  // namespace media
  43
  44 #endif  // MEDIA_CAST_SENDER_SOFTWARE_VIDEO_ENCODER_H_