hdmi fallback

README.md

@@ -51,6 +51,8 @@ echo "dtoverlay=dwc2" >> /boot/config.txt
 
 echo "dtoverlay=gpio-poweroff,gpiopin=5,active_low" >> /boot/config.txt
 
+sed -i /boot/config.txt -e "s/^hdmi_force_hotplug=1$/hdmi_force_hotplug=1$/"
+
 echo "libcomposite" >> /etc/modules
 
 apt purge plymouth

raspberry-environment/display.py

@@ -214,12 +214,14 @@ if __name__ == '__main__':
     #os_echo(g+"functions/rndis.usb0/os_desc/interface.rndis/compatible_id", "RNDIS")
     #os_echo(g+"functions/rndis.usb0/os_desc/interface.rndis/sub_compatible_id", "5162001")
 
-#    subprocess.run(['tvservice', '-p'], shell=False, check=False)
-#    subprocess.run(['fbset', '-fb', '/dev/fb0', '-depth', '16'], shell=False, check=False)
+    fallback_str = b'state 0x12000a [HDMI DMT (4) RGB full 4:3], 640x480 @ 60.00Hz, progressive\n'
+    p = subprocess.Popen(['tvservice', '-s'], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    _stdout, _stderr = p.communicate()
+    if (len(_stdout) > 0 and _stdout == fallback_str):
+      subprocess.run(['tvservice', '--explicit="CEA 16 HDMI"'], shell=False, check=False)
+      subprocess.run(['fbset', '-fb', '/dev/fb0', '-depth', '16'], shell=False, check=False)
+      subprocess.run(['fbset', '-fb', '/dev/fb0', '-depth', '32'], shell=False, check=False)
 
-#tvservice -p
-# tvservice -e "DMT 82"
-# fbset -g 1920 1080 1920 1080 16
 
     def callback(paths):
 #      if paths:

windows-snapshot-tool/src/main.cpp

@@ -274,8 +274,8 @@ void doScreenshot()
         CaptureImage(Hwnd, L"screenshot.png");
     } else {
         WCHAR filename[128];
-        wcsncpy(filename, path, sizeof(filename));
-        wcsncpy(filename, L"screenshot.png", sizeof(filename));
+        wcsncpy(filename, path, _countof(filename)-1);
+        wcsncat(filename, L"screenshot.png", _countof(filename) - wcslen(filename) -1);
         CaptureImage(Hwnd, filename);
     }
 
@@ -321,7 +321,7 @@ void getRaspiStorage(LPWSTR out) {
 		    if (GetVolumeInformationW(drive, volumeName, ARRAYSIZE(volumeName), &serialNumber, &maxComponentLen, &fileSystemFlags, fileSystemName, ARRAYSIZE(fileSystemName)))
 		    {
 			if (wcscmp(L"SCREENSHOTS", volumeName)==0) { // ToDo
-				wcsncpy(out, drive, sizeof(out));
+				wcsncpy(out, drive, 10); // ToDo
 			}
 		    }
 		}