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47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
/* ---------------------------------------------------------------------------
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** This software is in the public domain, furnished "as is", without technical
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** support, and with no warranty, express or implied, as to its usefulness for
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** any purpose.
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**
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** V4l2MmapCapture.h
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**
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** V4L2 source using mmap API
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**
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** -------------------------------------------------------------------------*/
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#ifndef V4L2_MMAP_CAPTURE
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#define V4L2_MMAP_CAPTURE
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// project
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#include "V4l2Capture.h"
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#define V4L2MMAP_NBBUFFER 10
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class V4l2MmapCapture : public V4l2Capture
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{
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public:
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static V4l2MmapCapture* createNew(V4L2DeviceParameters params);
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protected:
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V4l2MmapCapture(V4L2DeviceParameters params) : V4l2Capture(params), n_buffers(0) {};
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public:
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virtual bool captureStart();
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virtual size_t read(char* buffer, size_t bufferSize);
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virtual bool captureStop();
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virtual bool isReady() { return ((m_fd != -1)&& (n_buffers != 0)); };
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protected:
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unsigned int n_buffers;
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struct buffer
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{
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void * start;
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size_t length;
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};
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buffer m_buffer[V4L2MMAP_NBBUFFER];
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};
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#endif
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