public static boolean beginLiveView(final EdsCameraRef camera) { EdsError err = EdsError.EDS_ERR_OK; NativeLongByReference number = new NativeLongByReference(new NativeLong(1)); Pointer data = number.getPointer(); err = CanonUtils.setPropertyData( camera, EdsPropertyID.kEdsPropID_Evf_Mode, 0, NativeLong.SIZE, data); if (err != EdsError.EDS_ERR_OK) { System.err.println( "Could not start live view (set image mode) (error " + err.value() + ": " + err.name() + " - " + err.description() + ")"); return false; } number = new NativeLongByReference( new NativeLong(EdsEvfOutputDevice.kEdsEvfOutputDevice_PC.value())); data = number.getPointer(); err = CanonUtils.setPropertyData( camera, EdsPropertyID.kEdsPropID_Evf_OutputDevice, 0, NativeLong.SIZE, data); if (err != EdsError.EDS_ERR_OK) { System.err.println( "Could not start live view (set output device) (error " + err.value() + ": " + err.name() + " - " + err.description() + ")"); return false; } return true; }
public static boolean endLiveView(final EdsCameraRef camera) { EdsError err = EdsError.EDS_ERR_OK; NativeLongByReference number = new NativeLongByReference( new NativeLong(EdsEvfOutputDevice.kEdsEvfOutputDevice_TFT.value())); Pointer data = number.getPointer(); err = CanonUtils.setPropertyData( camera, EdsPropertyID.kEdsPropID_Evf_OutputDevice, 0, NativeLong.SIZE, data); if (err != EdsError.EDS_ERR_OK) { /* * System.err.println( "Could not end live view (error " + * err.value() + ": " + err.name() + " - " + * err.description() + ")" ); */ return false; } // TODO: decide whether skip deactivating the live view system. Canon's EOS Utility leaves it // enabled, so should consider leaving it enabled as well. number = new NativeLongByReference(new NativeLong(0)); data = number.getPointer(); err = CanonUtils.setPropertyData( camera, EdsPropertyID.kEdsPropID_Evf_Mode, 0, NativeLong.SIZE, data); if (err != EdsError.EDS_ERR_OK) { /* * System.err.println( "Could not end live view (error " + * err.value() + ": " + err.name() + " - " + * err.description() + ")" ); */ return false; } return true; }
// TODO: this method isn't very safe to leave public, perhaps some // setPropertyData[String/UInt32/etc.] methods would be better public static EdsError setPropertyDataAdvanced( final EdsBaseRef ref, final EdsPropertyID property, final long param, final Object value) throws IllegalStateException { final EdsDataType type = CanonUtils.getPropertyType(ref, property, param); final Pointer pointer; final int size; switch (type) { case kEdsDataType_String: { // EdsChar[] final String string = (String) value; size = string.length() + 1; pointer = new Memory(size); pointer.setString(0, string); break; } case kEdsDataType_Int8: // EdsInt8 case kEdsDataType_UInt8: { // EdsUInt8 size = 1; pointer = new Memory(size); pointer.setByte(0, (Byte) value); break; } case kEdsDataType_Int16: // EdsInt16 case kEdsDataType_UInt16: { // EdsUInt16 size = 2; pointer = new Memory(size); pointer.setShort(0, (Short) value); break; } case kEdsDataType_Int32: // EdsInt32 case kEdsDataType_UInt32: { // EdsUInt32 size = 4; pointer = new Memory(size); pointer.setNativeLong(0, new NativeLong((Long) value)); break; } case kEdsDataType_Int64: // EdsInt64 case kEdsDataType_UInt64: { // EdsUInt64 size = 8; pointer = new Memory(size); pointer.setLong(0, (Long) value); break; } case kEdsDataType_Float: { // EdsFloat size = 4; pointer = new Memory(size); pointer.setFloat(0, (Float) value); break; } case kEdsDataType_Double: { // EdsDouble size = 8; pointer = new Memory(size); pointer.setDouble(0, (Double) value); break; } case kEdsDataType_ByteBlock: { // Byte Block // TODO: According to API, is either EdsInt8[] or EdsUInt32[], but perhaps // former is a typo or an old value final int[] array = (int[]) value; size = 4 * array.length; pointer = new Memory(size); pointer.write(0, array, 0, array.length); break; } case kEdsDataType_Rational: // EdsRational case kEdsDataType_Point: // EdsPoint case kEdsDataType_Rect: // EdsRect case kEdsDataType_Time: // EdsTime case kEdsDataType_FocusInfo: // EdsFocusInfo case kEdsDataType_PictureStyleDesc: { // EdsPictureStyleDesc final Structure structure = (Structure) value; structure.write(); pointer = structure.getPointer(); size = structure.size(); break; } case kEdsDataType_Int8_Array: // EdsInt8[] case kEdsDataType_UInt8_Array: { // EdsUInt8[] final byte[] array = (byte[]) value; size = array.length; pointer = new Memory(size); pointer.write(0, array, 0, array.length); break; } case kEdsDataType_Int16_Array: // EdsInt16[] case kEdsDataType_UInt16_Array: { // EdsUInt16[] final short[] array = (short[]) value; size = 2 * array.length; pointer = new Memory(size); pointer.write(0, array, 0, array.length); break; } case kEdsDataType_Int32_Array: // EdsInt32[] case kEdsDataType_UInt32_Array: { // EdsUInt32[] final int[] array = (int[]) value; size = 4 * array.length; pointer = new Memory(size); pointer.write(0, array, 0, array.length); break; } case kEdsDataType_Bool: // EdsBool // TODO: implement case kEdsDataType_Bool_Array: // EdsBool[] // TODO: implement case kEdsDataType_Rational_Array: // EdsRational[] // TODO: implement case kEdsDataType_Unknown: // Unknown default: throw new IllegalStateException( type.description() + " (" + type.name() + ") is not currently supported by GetPropertyCommand"); } return CanonUtils.setPropertyData(ref, property, param, size, pointer); }