diff options
Diffstat (limited to 'usr.sbin/qcamcontrol/qcamcontrol.c')
| -rw-r--r-- | usr.sbin/qcamcontrol/qcamcontrol.c | 95 |
1 files changed, 37 insertions, 58 deletions
diff --git a/usr.sbin/qcamcontrol/qcamcontrol.c b/usr.sbin/qcamcontrol/qcamcontrol.c index e174d63..b52cca5 100644 --- a/usr.sbin/qcamcontrol/qcamcontrol.c +++ b/usr.sbin/qcamcontrol/qcamcontrol.c @@ -30,6 +30,12 @@ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#ifndef lint +static const char rcsid[] = + "$Id$"; +#endif /* not lint */ + +#include <err.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> @@ -56,6 +62,7 @@ void print_data(struct qcam *data) data->qc_contrast); } +static void usage(void) { fprintf(stderr, "usage: qcamcontrol [-p port] [-x xsize] [-y ysize] " @@ -65,6 +72,7 @@ usage(void) exit(2); } +int main(int argc, char **argv) { struct qcam info; @@ -92,68 +100,50 @@ main(int argc, char **argv) case 'x': x_size = atoi(optarg); - if (x_size > QC_MAX_XSIZE) { - fprintf(stderr, "x size too large (max %d)\n", - QC_MAX_XSIZE); - exit(2); - } + if (x_size > QC_MAX_XSIZE) + errx(2, "x size too large (max %d)", QC_MAX_XSIZE); break; case 'y': y_size = atoi(optarg); - if (y_size > QC_MAX_YSIZE) { - fprintf(stderr, "x size too large (max %d)\n", - QC_MAX_YSIZE); - exit(2); - } + if (y_size > QC_MAX_YSIZE) + errx(2, "x size too large (max %d)", QC_MAX_YSIZE); break; case 'z': zoom = atoi(optarg); - if (zoom > QC_ZOOM_200) { - fprintf(stderr, "zoom too large (max %d)\n", QC_ZOOM_200); - exit(2); - } + if (zoom > QC_ZOOM_200) + errx(2, "zoom too large (max %d)", QC_ZOOM_200); break; case 'd': depth = atoi(optarg); - if (depth != 4 && depth != 6) { - fprintf(stderr, "invalid depth (4 or 6)\n"); - exit(2); - } + if (depth != 4 && depth != 6) + errx(2, "invalid depth (4 or 6)"); break; case 'b': brightness = atoi(optarg); - if (brightness > 255) { - fprintf(stderr, "bad brightness (max 255)\n"); - exit(2); - } + if (brightness > 255) + errx(2, "bad brightness (max 255)"); break; case 'w': whitebalance = atoi(optarg); - if (whitebalance > 255) { - fprintf(stderr, "bad white balance (max 255)\n"); - exit(2); - } + if (whitebalance > 255) + errx(2, "bad white balance (max 255)"); break; case 'c': contrast = atoi(optarg); - if (contrast > 255) { - fprintf(stderr, "bad contrast (max 255)\n"); - exit(2); - } + if (contrast > 255) + errx(2, "bad contrast (max 255)"); break; case 'e': exposure = atoi(optarg); - if (exposure < 100) { - fprintf(stderr, "bad exposure (min 100)\n"); - exit(2); - } + if (exposure < 100) + errx(2, "bad exposure (min 100)"); break; default: @@ -164,17 +154,13 @@ main(int argc, char **argv) argv += optind; /* open device */ - if ((fd = open(port, O_RDONLY)) < 0) { - perror("open"); - exit(1); - } + if ((fd = open(port, O_RDONLY)) < 0) + err(1, "open"); - if (ioctl(fd, QC_GET, &info) < 0) { /* read in default info */ - perror("ioctl(QC_GET)"); - exit(1); - } + if (ioctl(fd, QC_GET, &info) < 0) /* read in default info */ + err(1, "ioctl(QC_GET)"); if (x_size > -1) info.qc_xsize = x_size; @@ -199,18 +185,14 @@ main(int argc, char **argv) */ info.qc_version = QC_IOCTL_VERSION; - if (ioctl(fd, QC_SET, &info) < 0) { - perror("ioctl(QC_SET)"); - exit(1); - } + if (ioctl(fd, QC_SET, &info) < 0) + err(1, "ioctl(QC_SET)"); /* * Tell us what the kernel thinks we're asking for */ - if (ioctl(fd, QC_GET, &info) < 0) { - perror("ioctl(QC_SET)"); - exit(1); - } + if (ioctl(fd, QC_GET, &info) < 0) + err(1, "ioctl(QC_SET)"); print_data(&info); @@ -221,10 +203,8 @@ main(int argc, char **argv) len = info.qc_xsize * info.qc_ysize; while (len) { bytes = read(fd, buffer, len); - if (bytes < 0) { - perror("read"); - exit(1); - } + if (bytes < 0) + err(1, "read"); len -= bytes; if (bytes == 0) @@ -238,8 +218,7 @@ main(int argc, char **argv) info.qc_xsize, info.qc_ysize, (1<<info.qc_bpp) - 1); fflush(stdout); - if (write(1, buffer, info.qc_xsize * info.qc_ysize) < 0) { - perror("write"); - exit(1); - } + if (write(1, buffer, info.qc_xsize * info.qc_ysize) < 0) + err(1, "write"); + return(0); } |
