share/examples/meteor/test-n.c

   1 /* A simple program to test the communication between the matrox meteor
   2  * driver and an user application in the continous sync capture mode.
   3  *
   4  * First the driver clears the mask and decrements the counter like it
   5  * would in a normal application. Then it purpose does not handle these
   6  * responsibilities to simulate an application falling behind. I use
   7  * the HUP signal to work as if the some of the  buffers were removed
   8  * (the second couter is used to cleared the correct bits.
   9  *
  10  *      build kernel with at least:
  11  *
  12  *              options "METEOR_ALLOC_PAGES=301"
  13  *
  14  */
  15 /* Copyright (c) 1995 Mark Tinguely and Jim Lowe
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions
  20  * are met:
  21  * 1. Redistributions of source code must retain the above copyright
  22  *    notice, this list of conditions and the following disclaimer.
  23  * 2. Redistributions in binary form must reproduce the above copyright
  24  *    notice, this list of conditions and the following disclaimer in the
  25  *    documentation and/or other materials provided with the distribution.
  26  * 3. All advertising materials mentioning features or use of this software
  27  *    must display the following acknowledgement:
  28  *      This product includes software developed by Mark Tinguely and Jim Lowe
  29  * 4. The name of the author may not be used to endorse or promote products
  30  *    derived from this software without specific prior written permission.
  31  *
  32  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  33  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  34  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  35  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  36  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  37  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  38  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  41  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  42  * POSSIBILITY OF SUCH DAMAGE.
  43  */
  44
  45 #include <sys/types.h>
  46 #include <sys/mman.h>
  47 #include <sys/fcntl.h>
  48 /*#include <machine/ioctl_meteor.h> */
  49 #include "/sys/i386/include/ioctl_meteor.h"
  50
  51 typedef unsigned char uint8;
  52 typedef signed char int8;
  53
  54 int i;
  55 static uint8 *y;
  56 extern int errno;
  57 struct meteor_mem *common_mem;
  58 int sig_cnt;
  59 int sig_cnt2;
  60
  61 void
  62 hup_catcher()
  63 {
  64         /* clear 4 oldest active bits */
  65         common_mem->active &= ~(1 << (sig_cnt2++ % 32));
  66         common_mem->active &= ~(1 << (sig_cnt2++ % 32));
  67         common_mem->active &= ~(1 << (sig_cnt2++ % 32));
  68         common_mem->active &= ~(1 << (sig_cnt2++ % 32));
  69         /* lowat is low enough that I will need 2 hups to start saving again */
  70         common_mem->num_active_bufs -= 4;
  71         puts("hup caught");
  72 }
  73
  74 void
  75 usr2_catcher()
  76 {
  77         int j;
  78         struct meteor_capframe capframe;
  79
  80         printf("active %3d = %08x ", sig_cnt,common_mem->active);
  81         printf("# act  %3d = %d\n", sig_cnt, common_mem->num_active_bufs);
  82
  83         if (sig_cnt < 80) {
  84                 common_mem->active &= ~(1 << (sig_cnt % 32));
  85                 common_mem->num_active_bufs--;
  86                 sig_cnt2++;
  87         }
  88
  89         printf("data %08x\n", *((u_long *) (y + (sig_cnt % 32) *
  90                                                 common_mem->frame_size)));
  91         if (++sig_cnt >= 200) {
  92                 capframe.command=METEOR_CAP_STOP_FRAMES;
  93
  94                 if (ioctl(i, METEORCAPFRM, &capframe) < 0) {
  95                         printf("METEORCAPFRM failed %d\n", errno);
  96                         exit(1);
  97                 }
  98                 exit (0);
  99         }
 100 }
 101
 102 main()
 103 {
 104         struct meteor_geomet geo;
 105         int height, width, depth, frames, size;
 106         struct meteor_capframe capframe;
 107
 108         if ((i = open("/dev/meteor", O_RDONLY)) < 0) {
 109                 printf("open failed\n");
 110                 exit(1);
 111         }
 112         printf("test %d %d\n", errno, i);
 113
 114         height = geo.rows = 120;
 115         width= geo.columns = 160;
 116         frames = geo.frames = 32;
 117         depth = 2;                      /* 2 bytes per pixel */
 118
 119         printf("ioctl %d %d\n", errno, i);
 120
 121         geo.oformat = METEOR_GEO_RGB16;
 122
 123         if (ioctl(i, METEORSETGEO, &geo) < 0) {
 124                 printf("METEORSETGEO failed %d\n", errno);
 125                 exit(1);
 126         }
 127
 128         printf("mmap %d %d\n", errno, i);
 129         size = ((width*height*depth*frames+4095)/4096)*4096;
 130         y=(uint8 *) mmap((caddr_t)0, size + 4096, PROT_READ |PROT_WRITE,MAP_SHARED, i, (off_t)0);
 131
 132         if (y == (uint8 *) MAP_FAILED) return (0);
 133
 134         common_mem = (struct meteor_mem *) (y + size);
 135
 136         signal(1, hup_catcher);
 137         signal(31, usr2_catcher);
 138
 139         capframe.command=METEOR_CAP_N_FRAMES;
 140         capframe.signal=31;
 141         capframe.lowat=25;
 142         capframe.hiwat=30;
 143
 144         printf("ioctl %d %d\n", errno, i);
 145         if (ioctl(i, METEORCAPFRM, &capframe) < 0) {
 146                 printf("METEORCAPFRM failed %d\n", errno);
 147                 exit(1);
 148         }
 149
 150         printf("signal = %d\n", common_mem->signal);
 151         printf("frame size = %d\n", common_mem->frame_size);
 152         printf("buffers = %d\n", common_mem->num_bufs);
 153         printf("hiwater = %d\n", common_mem->hiwat);
 154         printf("lowater = %d\n", common_mem->lowat);
 155         printf("active = %08x\n", common_mem->active);
 156         printf("# active = %d\n", common_mem->num_active_bufs);
 157
 158         printf("sleep loop\n", errno, i);
 159         while (1) {
 160                 sleep (60);
 161         }
 162 }