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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 CHROMECAST_MEDIA_CMA_IPC_STREAMER_CODED_FRAME_PROVIDER_HOST_H_ | |
6 #define CHROMECAST_MEDIA_CMA_IPC_STREAMER_CODED_FRAME_PROVIDER_HOST_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/callback.h" | |
11 #include "base/macros.h" | |
12 #include "base/memory/weak_ptr.h" | |
13 #include "base/threading/thread_checker.h" | |
14 #include "chromecast/media/cma/base/coded_frame_provider.h" | |
15 #include "media/base/audio_decoder_config.h" | |
16 #include "media/base/video_decoder_config.h" | |
17 | |
18 namespace chromecast { | |
19 namespace media { | |
20 class MediaMessageFifo; | |
21 | |
22 // CodedFrameProviderHost is a frame provider that gets the frames | |
23 // from a media message fifo. | |
24 class CodedFrameProviderHost : public CodedFrameProvider { | |
25 public: | |
26 // Note: if the media message fifo is located into shared memory, | |
27 // the caller must make sure the shared memory segment is valid | |
28 // during the whole lifetime of this object. | |
29 explicit CodedFrameProviderHost( | |
30 std::unique_ptr<MediaMessageFifo> media_message_fifo); | |
31 ~CodedFrameProviderHost() override; | |
32 | |
33 // CodedFrameProvider implementation. | |
34 void Read(const ReadCB& read_cb) override; | |
35 void Flush(const base::Closure& flush_cb) override; | |
36 | |
37 // Invoked when some data has been written into the fifo. | |
38 void OnFifoWriteEvent(); | |
39 base::Closure GetFifoWriteEventCb(); | |
40 | |
41 private: | |
42 void ReadMessages(); | |
43 | |
44 base::ThreadChecker thread_checker_; | |
45 | |
46 // Fifo holding the frames. | |
47 std::unique_ptr<MediaMessageFifo> fifo_; | |
48 | |
49 ReadCB read_cb_; | |
50 | |
51 // Audio/video configuration for the next A/V buffer. | |
52 ::media::AudioDecoderConfig audio_config_; | |
53 ::media::VideoDecoderConfig video_config_; | |
54 | |
55 base::WeakPtr<CodedFrameProviderHost> weak_this_; | |
56 base::WeakPtrFactory<CodedFrameProviderHost> weak_factory_; | |
57 | |
58 DISALLOW_COPY_AND_ASSIGN(CodedFrameProviderHost); | |
59 }; | |
60 | |
61 } // namespace media | |
62 } // namespace chromecast | |
63 | |
64 #endif // CHROMECAST_MEDIA_CMA_IPC_STREAMER_CODED_FRAME_PROVIDER_HOST_H_ | |
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