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1 // Copyright 2013 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_VIDEO_ENCODER_H_ | |
6 #define MEDIA_CAST_VIDEO_SENDER_VIDEO_ENCODER_H_ | |
7 | |
8 #include "base/callback.h" | |
9 #include "base/memory/ref_counted.h" | |
10 #include "base/memory/scoped_ptr.h" | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "base/time/time.h" | |
13 #include "media/base/video_frame.h" | |
14 #include "media/cast/cast_config.h" | |
15 #include "media/cast/cast_environment.h" | |
16 | |
17 namespace media { | |
18 namespace cast { | |
19 | |
20 // All these functions are called from the main cast thread. | |
21 class VideoEncoder { | |
22 public: | |
23 typedef base::Callback<void(scoped_ptr<transport::EncodedFrame>)> | |
24 FrameEncodedCallback; | |
25 | |
26 virtual ~VideoEncoder() {} | |
27 | |
28 // The video_frame must be valid until the closure callback is called. | |
29 // The closure callback is called from the video encoder thread as soon as | |
30 // the encoder is done with the frame; it does not mean that the encoded frame | |
31 // has been sent out. | |
32 // Once the encoded frame is ready the frame_encoded_callback is called. | |
33 virtual bool EncodeVideoFrame( | |
34 const scoped_refptr<media::VideoFrame>& video_frame, | |
35 const base::TimeTicks& capture_time, | |
36 const FrameEncodedCallback& frame_encoded_callback) = 0; | |
37 | |
38 // Inform the encoder about the new target bit rate. | |
39 virtual void SetBitRate(int new_bit_rate) = 0; | |
40 | |
41 // Inform the encoder to encode the next frame as a key frame. | |
42 virtual void GenerateKeyFrame() = 0; | |
43 | |
44 // Inform the encoder to only reference frames older or equal to frame_id; | |
45 virtual void LatestFrameIdToReference(uint32 frame_id) = 0; | |
46 }; | |
47 | |
48 } // namespace cast | |
49 } // namespace media | |
50 | |
51 #endif // MEDIA_CAST_VIDEO_SENDER_VIDEO_ENCODER_H_ | |
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