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>

1 files changed, 9 insertions, 2 deletions

diff --git a/qemu-edid.c b/qemu-edid.c
index 46eef70..1db3372 100644
--- a/qemu-edid.c
+++ b/qemu-edid.c
@@ -9,7 +9,10 @@
 #include "qemu/cutils.h"
 #include "hw/display/edid.h"
 
-static qemu_edid_info info;
+static qemu_edid_info info = (qemu_edid_info) {
+    .prefx = 1024,
+    .prefy = 768,
+};
 
 static void usage(FILE *out)
 {
@@ -39,6 +42,7 @@ int main(int argc, char *argv[])
 {
     FILE *outfile = NULL;
     uint8_t blob[256];
+    uint32_t dpi = 100;
     int rc;
 
     for (;;) {
@@ -83,7 +87,7 @@ int main(int argc, char *argv[])
             }
             break;
         case 'd':
-            if (qemu_strtoui(optarg, NULL, 10, &info.dpi) < 0) {
+            if (qemu_strtoui(optarg, NULL, 10, &dpi) < 0) {
                 fprintf(stderr, "not a number: %s\n", optarg);
                 exit(1);
             }
@@ -110,6 +114,9 @@ int main(int argc, char *argv[])
         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);