102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
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/* capture a PPM file using 24 bit RGB image and read() */
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/* Copyright (c) 1995 Mark Tinguely and Jim Lowe
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Tinguely and Jim Lowe
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/fcntl.h>
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/*#include <machine/ioctl_meteor.h>*/
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#include "/sys/i386/include/ioctl_meteor.h"
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extern int errno;
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#define ROWS 300
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#define COLS 400
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#define SIZE (ROWS * COLS * 4)
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main()
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{
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struct meteor_geomet geo;
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char buf[SIZE],b[4],header[16],*p;
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int i,o,c;
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if ((i = open("/dev/meteor", O_RDONLY)) < 0) {
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printf("open failed: %d\n", errno);
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exit(1);
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}
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/* set up the capture type and size */
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geo.rows = ROWS;
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geo.columns = COLS;
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geo.frames = 1;
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geo.oformat = METEOR_GEO_RGB24 ;
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if (ioctl(i, METEORSETGEO, &geo) < 0) {
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printf("ioctl failed: %d\n", errno);
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exit(1);
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}
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c = METEOR_FMT_NTSC;
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if (ioctl(i, METEORSFMT, &c) < 0) {
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printf("ioctl failed: %d\n", errno);
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exit(1);
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}
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c = METEOR_INPUT_DEV0;
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if (ioctl(i, METEORSINPUT, &c) < 0) {
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printf("ioctl failed: %d\n", errno);
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exit(1);
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}
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if ((c=read(i, &buf[0], SIZE)) < SIZE) {
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printf("read failed %d %d %d\n", c, i, errno);
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close(i);
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exit(1);
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}
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close(i);
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if ((o = open("rgb24.ppm", O_WRONLY | O_CREAT, 0644)) < 0) {
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printf("ppm open failed: %d\n", errno);
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exit(1);
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}
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/* make PPM header and save to file */
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strcpy(&header[0], "P6 400 300 255 ");
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header[2] = header[6] = header[10] = header[14] = '\n';
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write (o, &header[0], 15);
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/* save the RGB data to PPM file */
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for (p = &buf[0]; p < &buf[SIZE]; ) {
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b[2] = *p++; /* blue */
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b[1] = *p++; /* green */
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b[0] = *p++; /* red */
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*p++; /* NULL byte */
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write(o,&b[0], 3); /* not very efficient */
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}
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close(o);
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exit(0);
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}
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