Rh9 for linux video capture

Rh9 supports linux video capture. In rh9, linux videos are captured in bmp format. /*************************************** * ************ // * V4lgrab. h *//**//******************************** * ******************/# ifndef _ V4LGRAB_H __# define _ V4LGRAB_H _ # include <stdio. h> // typedef enum {FALSE = 0, TRUE = 1, OK = 2} BOOL; // # define SWAP_HL_WORD (x) {(x) = (x) <8) | (x)> 8);} // # define SWAP_HL_DWORD (x) {(x) = (x) <24) | (x)> 24) | (x) & 0xff0000)> 8) | (x) & 0xff00) <8 );} # Define FREE (x) if (x) {free (x); (x) = NULL;} typedef unsigned char BYTE; typedef unsigned into word; typedef unsigned long DWORD;/* www.2cto.com # pragma pack (1) typedef struct tagBITMAPFILEHEADER {WORDbfType; // the flag of bmp, value is "BM" DWORD bfSize; // size BMP file, unit is bytes DWORD bfReserved; // 0 DWORD bfOffBits; // must be 54} BITMAPFILEHEADER; typedef struct tagBITMAPINFOHEADER {DWOR D biSize; // must be 0x28 DWORD biWidth; // DWORD biHeight; // WORDbiPlanes; // must be 1 WORDbiBitCount; // DWORD biCompression; // DWORD biSizeImage; // DWORD biXPelsPerMeter; // DWORD biYPelsPerMeter; // DWORD biClrUsed; // DWORD break; //} BITMAPINFOHEADER; typedef struct break {BYTE rgbBlue; BYTErgbGreen; BYTErgbRed ;} RGBQUAD; */# if defined (_ cplusplus) extern "C" {/* Make sure we have C-declarations in C ++ programs */# endif // if successful return 1, or else return 0int openVideo (); int closeVideo (); // data space used to store data. size Space void getVideoData (unsigned char * data, int size); # if defined (_ cplusplus )} # endif/_ V4LGRAB_H ___ www.2cto.com /**************************** * ************************ // * v4lgrab. c *//**//******************************** ***** * **************/# Include <unistd. h> # include <sys/types. h> # include <sys/stat. h> # include <fcntl. h> # include <stdio. h> # include <sys/ioctl. h> # include <stdlib. h> # include <linux/types. h> # include <linux/videodev. h> # include "v4lgrab. h "# define TRUE 1 # define FALSE 0 # define WIDTHBYTES (I) (I + 31)/32*4) # define FILE_VIDEO "/dev/video0" // # define BMP "image.bmp" # define IMAGEWIDTH 176 # define IMAGEHEIGHT 144 stat Ic int fd; static struct video_capability cap; static struct video_window win; static struct video_picture vpic; int openVideo () {www.2cto.com // Open video device fd = open (FILE_VIDEO, O_RDONLY ); if (fd <0) {perror (FILE_VIDEO); return (FALSE);} // Get capabilities if (ioctl (fd, VIDIOCGCAP, & cap) <0) {perror ("VIDIOGCAP"); printf ("(" FILE_VIDEO "not a video4linux device ?) /N "); close (fd); return (FALSE);} // Get the video overlay window if (ioctl (fd, VIDIOCGWIN, & win) <0) {perror ("VIDIOCGWIN"); close (fd); return (FALSE);} // Set the video overlay window win. width = IMAGEWIDTH; win. height = IMAGEHEIGHT; if (ioctl (fd, VIDIOCSWIN, & win) <0) {perror ("VIDIOCSWIN"); close (fd); return (FALSE );;} // Get picture properties if (ioctl (fd, VIDIOCGPICT, & vpic) <0) {perror ("V IDIOCGPICT "); close (fd); return (FALSE);} // if (cap. type & VID_TYPE_MONOCHROME) {//} else {vpic. depth = 24; vpic. palette = VIDEO_PALETTE_RGB24; if (ioctl (fd, VIDIOCSPICT, & vpic) <0) {printf ("Unable to find a supported capture format. /n "); return (FALSE);} www.2cto.com //} return (TRUE);} int closeVideo () {if (fd! =-1) {close (fd); return (TRUE);} return (FALSE);} void getVideoData (unsigned char * data, int size) {size = read (fd, data, size);}/* int main (int argc, char ** argv) {FILE * fp; BITMAPFILEHEADER bf; BITMAPINFOHEADER bi; unsigned char * buffer; int I; fp = fopen (BMP, "wb"); if (! Fp) {perror (BMP); exit (1) ;}if (openVideo () = FALSE) {return (-1) ;}www.2cto.com // Set BITMAPINFOHEADER bi. biSize = 40; bi. biWidth = win. width; bi. biHeight = win. height; bi. biPlanes = 1; bi. biBitCount = 24; bi. biCompression = 0; bi. biSizeImage = WIDTHBYTES (bi. biWidth * bi. biBitCount) * bi. biHeight; bi. biXPelsPerMeter = 0; bi. biYPelsPerMeter = 0; bi. biClrUsed = 0; bi. biClrImportant = 0; // Set BITM APFILEHEADER bf. bfType = 0x4d42; bf. bfSize = 54 + bi. biSizeImage; bf. bfReserved = 0; bf. bfOffBits = 54; buffer = malloc (bi. biSizeImage); if (! Buffer) {printf ("Out of memory. /n "); exit (1) ;}for (I = 0; I <20; I ++) getVideoData (buffer, bi. biSizeImage); fwrite (& bf, 14, 1, fp); fwrite (& bi, 40, 1, fp); fwrite (buffer, bi. biSizeImage, 1, fp); printf ("get bmp form video/t [OK]/n"); fclose (fp); closeVideo (); return 0 ;} */author fengyv