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112 lines
1.9 KiB
C
112 lines
1.9 KiB
C
/*
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* Print out timing statistics from a QuickCam scan run yes, this is ugly,
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* it's just for simple analysis of driver timing. This is not normally
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* part of the system.
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*
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* Paul Traina, Feburary 1996
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/fcntl.h>
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#include <paths.h>
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#include <nlist.h>
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#include <machine/qcam.h>
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int kmem = -1;
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struct nlist names[] = {
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{"_qcam_rsbhigh"},
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{"_qcam_rsblow"}
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};
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#define MAX_SYMBOLS 2
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#define FBUFSIZE (QC_MAX_XSIZE*QC_MAX_YSIZE)+50
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static u_short high_times[FBUFSIZE];
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static u_short low_times[FBUFSIZE];
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void
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getaddrs(void)
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{
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int i;
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if (kmem < 0) {
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if ((kmem = open(_PATH_KMEM, 0, 0)) < 0) {
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perror("open kmem");
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exit(1);
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}
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(void) fcntl(kmem, F_SETFD, 1);
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for (i = 0; i < MAX_SYMBOLS; i++) {
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if (nlist("/kernel", &names[i]) < 0) {
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perror("nlist");
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exit(1);
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}
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if (names[i].n_value == 0) {
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fprintf(stderr, "couldn't find names[%d]\n", i);
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exit(1);
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}
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}
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}
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}
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void
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getdata(void)
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{
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if (lseek(kmem, (off_t) names[0].n_value, SEEK_SET) < 0) {
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perror("lseek high");
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exit(1);
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}
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if (read(kmem, (u_short *) high_times, sizeof(high_times)) < 0) {
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perror("read high");
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exit(1);
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}
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if (lseek(kmem, (off_t) names[1].n_value, SEEK_SET) < 0) {
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perror("lseek low");
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exit(1);
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}
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if (read(kmem, (u_short *) low_times, sizeof(low_times)) < 0) {
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perror("read low");
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exit(1);
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}
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}
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/*
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* slow and stupid, who cares? we're just learning about the camera's
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* behavior
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*/
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int
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printdata(u_short * p, int length)
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{
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int i, j, non_zero;
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for (i = 0; i < length;) {
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non_zero = 0;
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for (j = 0; j < 16; j++)
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if (p[j])
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non_zero++;
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if (non_zero) {
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printf("%8d:", i);
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for (j = 0; j < 16; j++) {
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printf(" %d", *p++);
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i++;
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}
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printf("\n");
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} else
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i += 16;
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}
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}
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void
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main(void)
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{
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getaddrs();
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getdata();
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printdata(high_times, FBUFSIZE);
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printdata(low_times, FBUFSIZE);
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}
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