media/cast/video_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_VIDEO_SENDER_SOFTWARE_VIDEO_ENCODER_H_
   6 #define MEDIA_CAST_VIDEO_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 namespace transport {
  18 struct EncodedVideoFrame;
  19 }  // namespace transport
  20
  21 class SoftwareVideoEncoder {
  22  public:
  23   virtual ~SoftwareVideoEncoder() {}
  24
  25   // Initialize the encoder before Encode() can be called. This method
  26   // must be called on the thread that Encode() is called.
  27   virtual void Initialize() = 0;
  28
  29   // Encode a raw image (as a part of a video stream).
  30   virtual bool Encode(const scoped_refptr<media::VideoFrame>& video_frame,
  31                       transport::EncodedVideoFrame* encoded_image) = 0;
  32
  33   // Update the encoder with a new target bit rate.
  34   virtual void UpdateRates(uint32 new_bitrate) = 0;
  35
  36   // Set the next frame to be a key frame.
  37   virtual void GenerateKeyFrame() = 0;
  38
  39   // Set the last frame to reference.
  40   virtual void LatestFrameIdToReference(uint32 frame_id) = 0;
  41 };
  42
  43 }  // namespace cast
  44 }  // namespace media
  45
  46 #endif  // MEDIA_CAST_VIDEO_SENDER_SOFTWARE_VIDEO_ENCODER_H_