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| 2 | #ifndef HEADER_GUARD_OSGFFMPEG_FFMPEG_IMAGE_STREAM_H |
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| 3 | #define HEADER_GUARD_OSGFFMPEG_FFMPEG_IMAGE_STREAM_H |
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| 4 | |
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| 5 | #include <osg/ImageStream> |
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| 6 | |
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| 7 | #include <OpenThreads/Condition> |
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| 8 | #include <OpenThreads/Thread> |
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| 9 | |
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| 10 | |
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| 11 | #ifdef _WIN32 |
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| 12 | #if defined OSG_LIBRARY_STATIC |
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| 13 | #define OSGFFMPEG_EXPORT_API |
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| 14 | #elif defined OSG_LIBRARY || defined osgFFmpeg_EXPORTS |
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| 15 | #define OSGFFMPEG_EXPORT_API __declspec(dllexport) |
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| 16 | #else |
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| 17 | #define OSGFFMPEG_EXPORT_API __declspec(dllimport); |
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| 18 | #endif |
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| 19 | #else |
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| 20 | #define OSGFFMPEG_EXPORT_API |
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| 21 | #endif |
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| 22 | |
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| 23 | |
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| 24 | |
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| 25 | namespace osgFFmpeg |
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| 26 | { |
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| 27 | |
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| 28 | class FFmpegDecoder; |
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| 29 | class FFmpegDecoderAudio; |
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| 30 | class FFmpegDecoderVideo; |
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| 31 | |
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| 32 | template <class T> |
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| 33 | class MessageQueue; |
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| 34 | |
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| 35 | |
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| 36 | class OSGFFMPEG_EXPORT_API FFmpegImageStream : public osg::ImageStream, public OpenThreads::Thread |
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| 37 | { |
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| 38 | public: |
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| 39 | |
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| 40 | FFmpegImageStream(); |
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| 41 | FFmpegImageStream(const FFmpegImageStream & image, const osg::CopyOp & copyop = osg::CopyOp::SHALLOW_COPY); |
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| 42 | |
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| 43 | META_Object(osgFFmpeg, FFmpegImageStream); |
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| 44 | |
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| 45 | bool open(const std::string & filename); |
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| 46 | |
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| 47 | virtual void play(); |
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| 48 | virtual void pause(); |
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| 49 | virtual void rewind(); |
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| 50 | virtual void quit(bool waitForThreadToExit = true); |
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| 51 | |
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| 52 | virtual void setAudioSink(osg::AudioSinkInterface* audio_sink); |
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| 53 | |
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| 54 | void consumeAudioBuffer(void * const buffer, const size_t size); |
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| 55 | |
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| 56 | bool audioStream() const; |
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| 57 | int audioFrequency() const; |
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| 58 | int audioNbChannels() const; |
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| 59 | osg::AudioStream::SampleFormat audioSampleFormat() const; |
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| 60 | |
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| 61 | double duration() const; |
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| 62 | |
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| 63 | bool videoAlphaChannel() const; |
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| 64 | double videoAspectRatio() const; |
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| 65 | double videoFrameRate() const; |
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| 66 | |
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| 67 | |
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| 68 | private: |
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| 69 | |
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| 70 | enum Command |
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| 71 | { |
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| 72 | CMD_PLAY, |
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| 73 | CMD_PAUSE, |
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| 74 | CMD_STOP, |
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| 75 | CMD_REWIND |
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| 76 | }; |
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| 77 | |
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| 78 | typedef MessageQueue<Command> CommandQueue; |
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| 79 | typedef OpenThreads::Mutex Mutex; |
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| 80 | typedef OpenThreads::Condition Condition; |
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| 81 | |
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| 82 | virtual ~FFmpegImageStream(); |
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| 83 | virtual void run(); |
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| 84 | virtual void applyLoopingMode(); |
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| 85 | |
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| 86 | bool handleCommand(Command cmd); |
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| 87 | |
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| 88 | void cmdPlay(); |
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| 89 | void cmdPause(); |
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| 90 | void cmdRewind(); |
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| 91 | |
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| 92 | static void publishNewFrame(const FFmpegDecoderVideo &, void * user_data); |
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| 93 | |
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| 94 | FFmpegDecoder * m_decoder; |
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| 95 | CommandQueue * m_commands; |
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| 96 | |
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| 97 | Mutex m_mutex; |
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| 98 | Condition m_frame_published_cond; |
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| 99 | bool m_frame_published_flag; |
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| 100 | }; |
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| 101 | |
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| 102 | } |
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| 103 | |
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| 104 | |
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| 105 | |
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| 106 | #endif // HEADER_GUARD_OSGFFMPEG_FFMPEG_IMAGE_STREAM_H |
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