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