Implement vflip and mirror for OV cameras

[sebromero]

This PR adds support for vertical flipping and horizontal mirroring on OV7670 and OV7675. You can test it by calling:

cam.setVerticalFlip(true);
cam.setHorizontalMirror(true);

[aliphys]

When the two lines are included in the sketch, compilation errors occur.

cam.setVerticalFlip(true);
cam.setHorizontalMirror(true);

Compilation error occurs when compiling for Nicla Vision.

:\Users\user\AppData\Local\Temp\arduino\sketches\334D5B34F33FF8D6C860A353CEE525B2\sketch\CameraCaptureRawBytes.ino.cpp.o: In function `loop':
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024017-13792-tvczgx.wihpc\CameraCaptureRawBytes/CameraCaptureRawBytes.ino:72: undefined reference to `Camera::setVerticalFlip(bool)'
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024017-13792-tvczgx.wihpc\CameraCaptureRawBytes/CameraCaptureRawBytes.ino:73: undefined reference to `Camera::setHorizontalMirror(bool)'
collect2.exe: error: ld returned 1 exit status

Using library arducam_dvp at version 1.0.0 in folder: D:\Users\user\Documents\Arduino\libraries\arducam_dvp 
Using library Wire in folder: C:\Users\user\AppData\Local\Arduino15\packages\arduino\hardware\mbed_nicla\4.1.0\libraries\Wire (legacy)
exit status 1

Compilation error: exit status 1

And Giga R1

"C:\\Users\\user\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\arm-none-eabi-gcc\\7-2017q4/bin/arm-none-eabi-g++" -E -P -x c -DCM4_BINARY_START=0x60000000 -DCM4_BINARY_END=0x60040000 -DCM4_RAM_END=0x60080000 "C:\\Users\\user\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.1.0\\variants\\GIGA/linker_script.ld" -o "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2/linker_script.ld"
"C:\\Users\\user\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\arm-none-eabi-gcc\\7-2017q4/bin/arm-none-eabi-g++" "-LC:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2" -Wl,--gc-sections -w -Wl,--as-needed -DCM4_BINARY_START=0x60000000 -DCM4_BINARY_END=0x60040000 -DCM4_RAM_END=0x60080000 "@C:\\Users\\user\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.1.0\\variants\\GIGA/ldflags.txt" "-TC:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2/linker_script.ld" "-Wl,-Map,C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2/CameraCaptureRawBytes.ino.map" --specs=nosys.specs -o "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2/CameraCaptureRawBytes.ino.elf" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\sketch\\CameraCaptureRawBytes.ino.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\libraries\\arducam_dvp\\GC2145\\gc2145.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\libraries\\arducam_dvp\\Himax_HM01B0\\himax.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\libraries\\arducam_dvp\\Himax_HM0360\\hm0360.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\libraries\\arducam_dvp\\OV7670\\ov7670.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\libraries\\arducam_dvp\\arducam_dvp.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\libraries\\Wire\\Wire.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\core\\pure_analog_pins.cpp.o" "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2\\core\\variant.cpp.o" -Wl,--whole-archive "C:\\Users\\user\\AppData\\Local\\Temp\\arduino\\sketches\\334D5B34F33FF8D6C860A353CEE525B2/..\\..\\cores\\arduino_mbed_giga_giga_split_100_0,target_core_cm7_f2191a3dd3ab0896ed020ac7d65676e2\\core.a" "C:\\Users\\user\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.1.0\\variants\\GIGA/libs/libmbed.a" -Wl,--no-whole-archive -Wl,--start-group -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys -Wl,--end-group
C:\Users\user\AppData\Local\Temp\arduino\sketches\334D5B34F33FF8D6C860A353CEE525B2\sketch\CameraCaptureRawBytes.ino.cpp.o: In function `setup':
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024017-13792-tvczgx.wihpc\CameraCaptureRawBytes/CameraCaptureRawBytes.ino:53: undefined reference to `Camera::setVerticalFlip(bool)'
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024017-13792-tvczgx.wihpc\CameraCaptureRawBytes/CameraCaptureRawBytes.ino:54: undefined reference to `Camera::setHorizontalMirror(bool)'
collect2.exe: error: ld returned 1 exit status

Using library arducam_dvp at version 1.0.0 in folder: D:\Users\user\Documents\Arduino\libraries\arducam_dvp 
Using library Wire in folder: C:\Users\user\AppData\Local\Arduino15\packages\arduino\hardware\mbed_giga\4.1.0\libraries\Wire (legacy)
exit status 1

Compilation error: exit status 1

The modified OV7670.cpp file is as follows. mbed core on 4.1.0 staging used

---

No compilation errors occur when the modified ov7670.cpp in this PR is used without calling the two methods.

[sebromero]

@aliphys The idea is to use the sketch from our core, not the one from the Arducam library.

[sebromero]

I just got confirmation from @karlsoderby that this works. Will merge it now.