mirror of
https://github.com/hyperion-project/hyperion.ng.git
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e474c90fcd
Former-commit-id: eec49d94ffbb0e1be0639e9cbbebba5955c79f4d
63 lines
938 B
C++
63 lines
938 B
C++
#pragma once
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// stl includes
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#include <string>
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#include <vector>
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/// Capture class for V4L2 devices
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///
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/// @see http://linuxtv.org/downloads/v4l-dvb-apis/capture-example.html
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class V4L2Grabber
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{
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public:
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V4L2Grabber();
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virtual ~V4L2Grabber();
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void start();
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private:
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void open_device();
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void close_device();
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void init_read(unsigned int buffer_size);
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void init_mmap();
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void init_userp(unsigned int buffer_size);
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void init_device();
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void uninit_device();
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void start_capturing();
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void stop_capturing();
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int read_frame();
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void process_image(const void *p, int size);
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int xioctl(int request, void *arg);
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void errno_exit(const char *s);
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private:
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enum io_method {
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IO_METHOD_READ,
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IO_METHOD_MMAP,
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IO_METHOD_USERPTR
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};
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struct buffer {
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void *start;
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size_t length;
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};
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private:
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const std::string _deviceName;
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const io_method _ioMethod;
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int _fileDescriptor;
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std::vector<buffer> _buffers;
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};
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