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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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