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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_VIDEO_ENCODER_IMPL_H_ | |
6 #define MEDIA_CAST_VIDEO_SENDER_VIDEO_ENCODER_IMPL_H_ | |
7 | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "media/cast/cast_config.h" | |
10 #include "media/cast/cast_environment.h" | |
11 #include "media/cast/video_sender/software_video_encoder.h" | |
12 #include "media/cast/video_sender/video_encoder.h" | |
13 | |
14 namespace media { | |
15 class VideoFrame; | |
16 | |
17 namespace cast { | |
18 | |
19 // This object is called external from the main cast thread and internally from | |
20 // the video encoder thread. | |
21 class VideoEncoderImpl : public VideoEncoder { | |
22 public: | |
23 struct CodecDynamicConfig { | |
24 bool key_frame_requested; | |
25 uint32 latest_frame_id_to_reference; | |
26 int bit_rate; | |
27 }; | |
28 | |
29 typedef base::Callback<void(scoped_ptr<transport::EncodedFrame>)> | |
30 FrameEncodedCallback; | |
31 | |
32 VideoEncoderImpl(scoped_refptr<CastEnvironment> cast_environment, | |
33 const VideoSenderConfig& video_config, | |
34 int max_unacked_frames); | |
35 | |
36 virtual ~VideoEncoderImpl(); | |
37 | |
38 // Called from the main cast thread. This function post the encode task to the | |
39 // video encoder thread; | |
40 // The video_frame must be valid until the closure callback is called. | |
41 // The closure callback is called from the video encoder thread as soon as | |
42 // the encoder is done with the frame; it does not mean that the encoded frame | |
43 // has been sent out. | |
44 // Once the encoded frame is ready the frame_encoded_callback is called. | |
45 virtual bool EncodeVideoFrame( | |
46 const scoped_refptr<media::VideoFrame>& video_frame, | |
47 const base::TimeTicks& capture_time, | |
48 const FrameEncodedCallback& frame_encoded_callback) OVERRIDE; | |
49 | |
50 // The following functions are called from the main cast thread. | |
51 virtual void SetBitRate(int new_bit_rate) OVERRIDE; | |
52 virtual void GenerateKeyFrame() OVERRIDE; | |
53 virtual void LatestFrameIdToReference(uint32 frame_id) OVERRIDE; | |
54 | |
55 private: | |
56 scoped_refptr<CastEnvironment> cast_environment_; | |
57 CodecDynamicConfig dynamic_config_; | |
58 | |
59 // This member belongs to the video encoder thread. It must not be | |
60 // dereferenced on the main thread. We manage the lifetime of this member | |
61 // manually because it needs to be initialize, used and destroyed on the | |
62 // video encoder thread and video encoder thread can out-live the main thread. | |
63 scoped_ptr<SoftwareVideoEncoder> encoder_; | |
64 | |
65 DISALLOW_COPY_AND_ASSIGN(VideoEncoderImpl); | |
66 }; | |
67 | |
68 } // namespace cast | |
69 } // namespace media | |
70 | |
71 #endif // MEDIA_CAST_VIDEO_SENDER_VIDEO_ENCODER_IMPL_H_ | |
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