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modify read access to not start if captureStart is not called

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MPR 2014-11-08 18:13:15 +00:00
parent 2d582d5e7c
commit 8bf1eba206
1 changed files with 7 additions and 4 deletions
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11
inc/V4l2ReadCapture.h
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@ -22,13 +22,16 @@ class V4l2ReadCapture : public V4l2Capture
static V4l2ReadCapture* createNew(V4L2DeviceParameters params); static V4l2ReadCapture* createNew(V4L2DeviceParameters params);
protected: protected:
V4l2ReadCapture(V4L2DeviceParameters params) : V4l2Capture(params) {}; V4l2ReadCapture(V4L2DeviceParameters params) : V4l2Capture(params), m_counter(0) {};
public: public:
virtual bool captureStart() { return true; }; virtual bool captureStart() { m_counter=1; return true; };
virtual size_t read(char* buffer, size_t bufferSize); virtual size_t read(char* buffer, size_t bufferSize);
virtual bool captureStop() { return true; }; virtual bool captureStop() { m_counter=0; return true; };
virtual bool isReady() { return m_fd != -1; }; virtual bool isReady() { return ((m_fd != -1) && (m_counter>0)); };
protected:
int m_counter;
}; };
#endif #endif