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1 // Copyright (c) 2011 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_FILTERS_RTC_VIDEO_DECODER_H_ | |
6 #define MEDIA_FILTERS_RTC_VIDEO_DECODER_H_ | |
7 | |
8 #include <deque> | |
9 #include <string> | |
10 | |
11 #include "base/gtest_prod_util.h" | |
12 #include "base/time.h" | |
13 #include "media/base/filters.h" | |
14 #include "media/base/video_frame.h" | |
15 #include "media/filters/decoder_base.h" | |
16 | |
17 // TODO(ronghuawu) ExternalRenderer should be defined in WebRtc | |
18 class ExternalRenderer { | |
19 public: | |
20 virtual int FrameSizeChange(unsigned int width, | |
21 unsigned int height, | |
22 unsigned int number_of_streams) = 0; | |
23 virtual int DeliverFrame(unsigned char* buffer, int buffer_size) = 0; | |
24 | |
25 protected: | |
26 virtual ~ExternalRenderer() {} | |
27 }; | |
28 | |
29 namespace media { | |
30 | |
31 class RTCVideoDecoder : public VideoDecoder, | |
32 public ExternalRenderer { | |
33 public: | |
34 RTCVideoDecoder(MessageLoop* message_loop, const std::string& url); | |
35 virtual ~RTCVideoDecoder(); | |
36 | |
37 // Filter implementation. | |
38 virtual void Play(FilterCallback* callback); | |
39 virtual void Seek(base::TimeDelta time, const FilterStatusCB& cb); | |
40 virtual void Pause(FilterCallback* callback); | |
41 virtual void Stop(FilterCallback* callback); | |
42 | |
43 // Decoder implementation. | |
44 virtual void Initialize(DemuxerStream* demuxer_stream, | |
45 FilterCallback* filter_callback, | |
46 StatisticsCallback* stat_callback); | |
47 virtual const MediaFormat& media_format(); | |
48 virtual void ProduceVideoFrame(scoped_refptr<VideoFrame> video_frame); | |
49 virtual bool ProvidesBuffer(); | |
50 | |
51 // ExternalRenderer implementation | |
52 virtual int FrameSizeChange(unsigned int width, | |
53 unsigned int height, | |
54 unsigned int number_of_streams); | |
55 | |
56 virtual int DeliverFrame(unsigned char* buffer, | |
57 int buffer_size); | |
58 | |
59 // TODO(ronghuawu): maybe move this function to a | |
60 // base class (RawVideoDecoder) so that the camera preview may share this. | |
61 static bool IsUrlSupported(const std::string& url); | |
62 | |
63 private: | |
64 friend class RTCVideoDecoderTest; | |
65 FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, Initialize_Successful); | |
66 FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, DoSeek); | |
67 FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, DoDeliverFrame); | |
68 FRIEND_TEST_ALL_PREFIXES(RTCVideoDecoderTest, DoFrameSizeChange); | |
69 | |
70 enum DecoderState { | |
71 kUnInitialized, | |
72 kNormal, | |
73 kSeeking, | |
74 kPaused, | |
75 kStopped | |
76 }; | |
77 | |
78 MessageLoop* message_loop_; | |
79 size_t width_; | |
80 size_t height_; | |
81 std::string url_; | |
82 DecoderState state_; | |
83 MediaFormat media_format_; | |
84 std::deque<scoped_refptr<VideoFrame> > frame_queue_available_; | |
85 // Used for accessing frame queue from another thread. | |
86 base::Lock lock_; | |
87 | |
88 DISALLOW_COPY_AND_ASSIGN(RTCVideoDecoder); | |
89 }; | |
90 | |
91 } // namespace media | |
92 | |
93 #endif // MEDIA_FILTERS_RTC_VIDEO_DECODER_H_ | |
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