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119 lines
3.0 KiB
C++
119 lines
3.0 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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** main.cpp
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**
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** test V4L2 capture device
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**
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** -------------------------------------------------------------------------*/
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <signal.h>
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#include "logger.h"
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#include "V4l2Capture.h"
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int stop=0;
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/* ---------------------------------------------------------------------------
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** SIGINT handler
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** -------------------------------------------------------------------------*/
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void sighandler(int)
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{
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printf("SIGINT\n");
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stop =1;
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}
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/* ---------------------------------------------------------------------------
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** main
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** -------------------------------------------------------------------------*/
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int main(int argc, char* argv[])
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{
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int verbose = 0;
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const char *in_devname = "/dev/video0";
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V4l2IoType ioTypeIn = IOTYPE_MMAP;
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int format = 0;
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int width = 0;
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int height = 0;
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int fps = 0;
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int c = 0;
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while ((c = getopt (argc, argv, "hv:" "G:f:r")) != -1)
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{
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switch (c)
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{
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case 'v': verbose = 1; if (optarg && *optarg=='v') verbose++; break;
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case 'r': ioTypeIn = IOTYPE_READWRITE ; break;
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case 'G': sscanf(optarg,"%dx%dx%d", &width, &height, &fps) ; break;
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case 'f': format = V4l2Device::fourcc(optarg) ; break;
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case 'h':
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{
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std::cout << argv[0] << " [-v[v]] [-G <width>x<height>x<fps>] [-f format] [device] [-r]" << std::endl;
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std::cout << "\t -v : verbose " << std::endl;
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std::cout << "\t -vv : very verbose " << std::endl;
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std::cout << "\t -r : V4L2 capture using read interface (default use memory mapped buffers)" << std::endl;
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std::cout << "\t device : V4L2 capture device (default "<< in_devname << ")" << std::endl;
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exit(0);
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}
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}
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}
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if (optind<argc)
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{
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in_devname = argv[optind];
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optind++;
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}
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// initialize log4cpp
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initLogger(verbose);
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// init V4L2 capture interface
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V4L2DeviceParameters param(in_devname, format, width, height, fps, ioTypeIn, verbose);
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V4l2Capture* videoCapture = V4l2Capture::create(param);
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if (videoCapture == NULL)
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{
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LOG(WARN) << "Cannot reading from V4L2 capture interface for device:" << in_devname;
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}
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else
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{
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timeval tv;
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LOG(NOTICE) << "Start reading from " << in_devname;
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signal(SIGINT,sighandler);
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while (!stop)
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{
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tv.tv_sec=1;
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tv.tv_usec=0;
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int ret = videoCapture->isReadable(&tv);
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if (ret == 1)
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{
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char buffer[videoCapture->getBufferSize()];
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int rsize = videoCapture->read(buffer, sizeof(buffer));
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if (rsize == -1)
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{
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LOG(NOTICE) << "stop " << strerror(errno);
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stop=1;
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}
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else
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{
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LOG(NOTICE) << "size:" << rsize;
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}
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}
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else if (ret == -1)
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{
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LOG(NOTICE) << "stop " << strerror(errno);
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stop=1;
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}
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}
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delete videoCapture;
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}
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return 0;
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}
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