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 base {
  12 class TimeTicks;
  13 }
  14
  15 namespace media {
  16 class VideoFrame;
  17 }
  18
  19 namespace media {
  20 namespace cast {
  21 struct EncodedFrame;
  22
  23 class SoftwareVideoEncoder {
  24  public:
  25   virtual ~SoftwareVideoEncoder() {}
  26
  27   // Initialize the encoder before Encode() can be called. This method
  28   // must be called on the thread that Encode() is called.
  29   virtual void Initialize() = 0;
  30
  31   // Encode a raw image (as a part of a video stream).
  32   virtual void Encode(const scoped_refptr<media::VideoFrame>& video_frame,
  33                       const base::TimeTicks& reference_time,
  34                       EncodedFrame* encoded_frame) = 0;
  35
  36   // Update the encoder with a new target bit rate.
  37   virtual void UpdateRates(uint32 new_bitrate) = 0;
  38
  39   // Set the next frame to be a key frame.
  40   virtual void GenerateKeyFrame() = 0;
  41
  42   // Set the last frame to reference.
  43   virtual void LatestFrameIdToReference(uint32 frame_id) = 0;
  44 };
  45
  46 }  // namespace cast
  47 }  // namespace media
  48
  49 #endif  // MEDIA_CAST_SENDER_SOFTWARE_VIDEO_ENCODER_H_