qemu/qemu-edid.c
Marc-André Lureau fd36eade01 edid: use physical dimensions if available
Replace dpi with width_mm/height_mm in qemu_edid_info.

Use it when set (non-zero) to compute the DPI and generate the EDID.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200927145751.365446-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-09-29 10:08:25 +02:00

127 lines
3.6 KiB
C

/*
* QEMU EDID test tool.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/bswap.h"
#include "qemu/cutils.h"
#include "hw/display/edid.h"
static qemu_edid_info info = (qemu_edid_info) {
.prefx = 1024,
.prefy = 768,
};
static void usage(FILE *out)
{
fprintf(out,
"\n"
"This is a test tool for the qemu edid generator.\n"
"\n"
"Typically you'll pipe the output into edid-decode\n"
"to check if the generator works correctly.\n"
"\n"
"usage: qemu-edid <options>\n"
"options:\n"
" -h print this text\n"
" -o <file> set output file (stdout by default)\n"
" -v <vendor> set monitor vendor (three letters)\n"
" -n <name> set monitor name\n"
" -s <serial> set monitor serial\n"
" -d <dpi> set display resolution\n"
" -x <prefx> set preferred width\n"
" -y <prefy> set preferred height\n"
" -X <maxx> set maximum width\n"
" -Y <maxy> set maximum height\n"
"\n");
}
int main(int argc, char *argv[])
{
FILE *outfile = NULL;
uint8_t blob[256];
uint32_t dpi = 100;
int rc;
for (;;) {
rc = getopt(argc, argv, "ho:x:y:X:Y:d:v:n:s:");
if (rc == -1) {
break;
}
switch (rc) {
case 'o':
if (outfile) {
fprintf(stderr, "outfile specified twice\n");
exit(1);
}
outfile = fopen(optarg, "w");
if (outfile == NULL) {
fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
exit(1);
}
break;
case 'x':
if (qemu_strtoui(optarg, NULL, 10, &info.prefx) < 0) {
fprintf(stderr, "not a number: %s\n", optarg);
exit(1);
}
break;
case 'y':
if (qemu_strtoui(optarg, NULL, 10, &info.prefy) < 0) {
fprintf(stderr, "not a number: %s\n", optarg);
exit(1);
}
break;
case 'X':
if (qemu_strtoui(optarg, NULL, 10, &info.maxx) < 0) {
fprintf(stderr, "not a number: %s\n", optarg);
exit(1);
}
break;
case 'Y':
if (qemu_strtoui(optarg, NULL, 10, &info.maxy) < 0) {
fprintf(stderr, "not a number: %s\n", optarg);
exit(1);
}
break;
case 'd':
if (qemu_strtoui(optarg, NULL, 10, &dpi) < 0) {
fprintf(stderr, "not a number: %s\n", optarg);
exit(1);
}
break;
case 'v':
info.vendor = optarg;
break;
case 'n':
info.name = optarg;
break;
case 's':
info.serial = optarg;
break;
case 'h':
usage(stdout);
exit(0);
default:
usage(stderr);
exit(1);
}
}
if (outfile == NULL) {
outfile = stdout;
}
info.width_mm = qemu_edid_dpi_to_mm(dpi, info.prefx);
info.height_mm = qemu_edid_dpi_to_mm(dpi, info.prefy);
memset(blob, 0, sizeof(blob));
qemu_edid_generate(blob, sizeof(blob), &info);
fwrite(blob, sizeof(blob), 1, outfile);
fflush(outfile);
exit(0);
}