LXR qemu/qemu-edid.c

   1/*
   2 * QEMU EDID test tool.
   3 *
   4 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   5 * See the COPYING file in the top-level directory.
   6 */
   7#include "qemu/osdep.h"
   8#include "qemu-common.h"
   9#include "qemu/bswap.h"
  10#include "qemu/cutils.h"
  11#include "hw/display/edid.h"
  12
  13static qemu_edid_info info;
  14
  15static void usage(FILE *out)
  16{
  17    fprintf(out,
  18            "\n"
  19            "This is a test tool for the qemu edid generator.\n"
  20            "\n"
  21            "Typically you'll pipe the output into edid-decode\n"
  22            "to check if the generator works correctly.\n"
  23            "\n"
  24            "usage: qemu-edid <options>\n"
  25            "options:\n"
  26            "    -h             print this text\n"
  27            "    -o <file>      set output file (stdout by default)\n"
  28            "    -v <vendor>    set monitor vendor (three letters)\n"
  29            "    -n <name>      set monitor name\n"
  30            "    -s <serial>    set monitor serial\n"
  31            "    -d <dpi>       set display resolution\n"
  32            "    -x <prefx>     set preferred width\n"
  33            "    -y <prefy>     set preferred height\n"
  34            "    -X <maxx>      set maximum width\n"
  35            "    -Y <maxy>      set maximum height\n"
  36            "\n");
  37}
  38
  39int main(int argc, char *argv[])
  40{
  41    FILE *outfile = NULL;
  42    uint8_t blob[256];
  43    int rc;
  44
  45    for (;;) {
  46        rc = getopt(argc, argv, "ho:x:y:X:Y:d:v:n:s:");
  47        if (rc == -1) {
  48            break;
  49        }
  50        switch (rc) {
  51        case 'o':
  52            if (outfile) {
  53                fprintf(stderr, "outfile specified twice\n");
  54                exit(1);
  55            }
  56            outfile = fopen(optarg, "w");
  57            if (outfile == NULL) {
  58                fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
  59                exit(1);
  60            }
  61            break;
  62        case 'x':
  63            if (qemu_strtoui(optarg, NULL, 10, &info.prefx) < 0) {
  64                fprintf(stderr, "not a number: %s\n", optarg);
  65                exit(1);
  66            }
  67            break;
  68        case 'y':
  69            if (qemu_strtoui(optarg, NULL, 10, &info.prefy) < 0) {
  70                fprintf(stderr, "not a number: %s\n", optarg);
  71                exit(1);
  72            }
  73            break;
  74        case 'X':
  75            if (qemu_strtoui(optarg, NULL, 10, &info.maxx) < 0) {
  76                fprintf(stderr, "not a number: %s\n", optarg);
  77                exit(1);
  78            }
  79            break;
  80        case 'Y':
  81            if (qemu_strtoui(optarg, NULL, 10, &info.maxy) < 0) {
  82                fprintf(stderr, "not a number: %s\n", optarg);
  83                exit(1);
  84            }
  85            break;
  86        case 'd':
  87            if (qemu_strtoui(optarg, NULL, 10, &info.dpi) < 0) {
  88                fprintf(stderr, "not a number: %s\n", optarg);
  89                exit(1);
  90            }
  91            break;
  92        case 'v':
  93            info.vendor = optarg;
  94            break;
  95        case 'n':
  96            info.name = optarg;
  97            break;
  98        case 's':
  99            info.serial = optarg;
 100            break;
 101        case 'h':
 102            usage(stdout);
 103            exit(0);
 104        default:
 105            usage(stderr);
 106            exit(1);
 107        }
 108    }
 109
 110    if (outfile == NULL) {
 111        outfile = stdout;
 112    }
 113
 114    memset(blob, 0, sizeof(blob));
 115    qemu_edid_generate(blob, sizeof(blob), &info);
 116    fwrite(blob, sizeof(blob), 1, outfile);
 117    fflush(outfile);
 118
 119    exit(0);
 120}
 121