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    .prefx = 1024,
  14    .prefy = 768,
  15};
  16
  17static void usage(FILE *out)
  18{
  19    fprintf(out,
  20            "\n"
  21            "This is a test tool for the qemu edid generator.\n"
  22            "\n"
  23            "Typically you'll pipe the output into edid-decode\n"
  24            "to check if the generator works correctly.\n"
  25            "\n"
  26            "usage: qemu-edid <options>\n"
  27            "options:\n"
  28            "    -h             print this text\n"
  29            "    -o <file>      set output file (stdout by default)\n"
  30            "    -v <vendor>    set monitor vendor (three letters)\n"
  31            "    -n <name>      set monitor name\n"
  32            "    -s <serial>    set monitor serial\n"
  33            "    -d <dpi>       set display resolution\n"
  34            "    -x <prefx>     set preferred width\n"
  35            "    -y <prefy>     set preferred height\n"
  36            "    -X <maxx>      set maximum width\n"
  37            "    -Y <maxy>      set maximum height\n"
  38            "\n");
  39}
  40
  41int main(int argc, char *argv[])
  42{
  43    FILE *outfile = NULL;
  44    uint8_t blob[256];
  45    uint32_t dpi = 100;
  46    int rc;
  47
  48    for (;;) {
  49        rc = getopt(argc, argv, "ho:x:y:X:Y:d:v:n:s:");
  50        if (rc == -1) {
  51            break;
  52        }
  53        switch (rc) {
  54        case 'o':
  55            if (outfile) {
  56                fprintf(stderr, "outfile specified twice\n");
  57                exit(1);
  58            }
  59            outfile = fopen(optarg, "w");
  60            if (outfile == NULL) {
  61                fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
  62                exit(1);
  63            }
  64            break;
  65        case 'x':
  66            if (qemu_strtoui(optarg, NULL, 10, &info.prefx) < 0) {
  67                fprintf(stderr, "not a number: %s\n", optarg);
  68                exit(1);
  69            }
  70            break;
  71        case 'y':
  72            if (qemu_strtoui(optarg, NULL, 10, &info.prefy) < 0) {
  73                fprintf(stderr, "not a number: %s\n", optarg);
  74                exit(1);
  75            }
  76            break;
  77        case 'X':
  78            if (qemu_strtoui(optarg, NULL, 10, &info.maxx) < 0) {
  79                fprintf(stderr, "not a number: %s\n", optarg);
  80                exit(1);
  81            }
  82            break;
  83        case 'Y':
  84            if (qemu_strtoui(optarg, NULL, 10, &info.maxy) < 0) {
  85                fprintf(stderr, "not a number: %s\n", optarg);
  86                exit(1);
  87            }
  88            break;
  89        case 'd':
  90            if (qemu_strtoui(optarg, NULL, 10, &dpi) < 0) {
  91                fprintf(stderr, "not a number: %s\n", optarg);
  92                exit(1);
  93            }
  94            break;
  95        case 'v':
  96            info.vendor = optarg;
  97            break;
  98        case 'n':
  99            info.name = optarg;
 100            break;
 101        case 's':
 102            info.serial = optarg;
 103            break;
 104        case 'h':
 105            usage(stdout);
 106            exit(0);
 107        default:
 108            usage(stderr);
 109            exit(1);
 110        }
 111    }
 112
 113    if (outfile == NULL) {
 114        outfile = stdout;
 115    }
 116
 117    info.width_mm = qemu_edid_dpi_to_mm(dpi, info.prefx);
 118    info.height_mm = qemu_edid_dpi_to_mm(dpi, info.prefy);
 119
 120    memset(blob, 0, sizeof(blob));
 121    qemu_edid_generate(blob, sizeof(blob), &info);
 122    fwrite(blob, sizeof(blob), 1, outfile);
 123    fflush(outfile);
 124
 125    exit(0);
 126}
 127