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75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
/*
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* Copyright 2013 Antti Palosaari <crope@iki.fi>
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_KERNEL_LIBV4L2_X_IMPL_H
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#define INCLUDED_KERNEL_LIBV4L2_X_IMPL_H
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#include <string.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <uapi/linux/videodev2.h>
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#include "/usr/local/include/libv4l2.h"
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#include "fcntl.h"
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#include <sys/mman.h>
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namespace kernel {
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// v4l2_mmap
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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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class v4l //: public v4l
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{
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private:
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// v4l2 device file handle
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int fd;
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// stream / sample format
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uint32_t pixelformat;
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struct buffer *buffers;
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unsigned int n_buffers;
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// for processing mmap buffer
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void *recebuf_ptr;
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unsigned int recebuf_len;
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unsigned int recebuf_mmap_index;
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public:
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v4l(const char *filename);
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~v4l();
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void set_samp_rate(double samp_rate);
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void set_center_freq(double freq);
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void set_bandwidth(double bandwidth);
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void set_tuner_gain(double gain);
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// Where all the action really happens
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int work(int noutput_items,
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void* input_items,
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void* output_items);
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};
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} // namespace kernel
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#endif /* INCLUDED_KERNEL_LIBV4L2_X_IMPL_H */
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