| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MEDIA_CAST_TEST_RECEIVER_VIDEO_DECODER_H_ |
| #define MEDIA_CAST_TEST_RECEIVER_VIDEO_DECODER_H_ |
| |
| #include <memory> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "media/base/video_frame.h" |
| #include "media/cast/constants.h" |
| #include "media/cast/net/cast_transport_config.h" |
| |
| namespace media { |
| namespace cast { |
| |
| class CastEnvironment; |
| |
| class VideoDecoder { |
| public: |
| // Callback passed to DecodeFrame, to deliver a decoded video frame from the |
| // decoder. |frame| can be NULL when errors occur. |is_continuous| is |
| // normally true, but will be false if the decoder has detected a frame skip |
| // since the last decode operation; and the client might choose to take steps |
| // to smooth/interpolate video discontinuities in this case. |
| typedef base::RepeatingCallback<void(scoped_refptr<VideoFrame> frame, |
| bool is_continuous)> |
| DecodeFrameCallback; |
| |
| VideoDecoder(const scoped_refptr<CastEnvironment>& cast_environment, |
| Codec codec); |
| |
| VideoDecoder(const VideoDecoder&) = delete; |
| VideoDecoder& operator=(const VideoDecoder&) = delete; |
| |
| virtual ~VideoDecoder(); |
| |
| // Returns STATUS_INITIALIZED if the decoder was successfully constructed. If |
| // this method returns any other value, calls to DecodeFrame() will not |
| // succeed. |
| OperationalStatus InitializationResult() const; |
| |
| // Decode the payload in |encoded_frame| asynchronously. |callback| will be |
| // invoked on the CastEnvironment::MAIN thread with the result. |
| // |
| // In the normal case, |encoded_frame->frame_id| will be |
| // monotonically-increasing by 1 for each successive call to this method. |
| // When it is not, the decoder will assume one or more frames have been |
| // dropped (e.g., due to packet loss), and will perform recovery actions. |
| void DecodeFrame(std::unique_ptr<EncodedFrame> encoded_frame, |
| const DecodeFrameCallback& callback); |
| |
| private: |
| class FakeImpl; |
| class ImplBase; |
| class Vp8Impl; |
| |
| const scoped_refptr<CastEnvironment> cast_environment_; |
| scoped_refptr<ImplBase> impl_; |
| }; |
| |
| } // namespace cast |
| } // namespace media |
| |
| #endif // MEDIA_CAST_TEST_RECEIVER_VIDEO_DECODER_H_ |