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StreamConsumer.h
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28 
29 #ifndef STREAM_CONSUMER_H
30 #define STREAM_CONSUMER_H
31 
32 #include <EGL/egl.h>
33 #include <EGL/eglext.h>
34 
35 namespace ArgusSamples
36 {
37 
38 /**
39  * The stream consumer is connecting to a EGL stream and consumes the frames into a GL texture.
40  */
42 {
43 public:
44  explicit StreamConsumer(EGLStreamKHR eglStream);
46 
47  bool initialize();
48  bool shutdown();
49 
50  bool isEGLStream(EGLStreamKHR eglStream) const;
51  uint32_t getStreamTextureID() const;
52 
53  bool setStreamAspectRatio(float aspectRatio);
54  float getStreamAspectRatio() const;
55 
56  /**
57  * @returns the cached stream state
58  */
59  EGLint getStreamState() const
60  {
61  return m_streamState;
62  }
63 
64  /**
65  * Check the stream state and acquire a new frame if available
66  *
67  * @param acquiredNewFrame [out] set to true if a new frame had been acquired
68  */
69  bool acquire(bool *acquiredNewFrame);
70 
71 private:
73  EGLStreamKHR m_eglStream;
74  EGLint m_streamState; ///< cached stream state
75  uint32_t m_streamTexture;
76  float m_aspectRatio; ///< aspect ration of the images transported by the stream
77 
78  /**
79  * Hide default constructor
80  */
82 };
83 
84 }; // namespace ArgusSamples
85 
86 #endif // STREAM_CONSUMER_H