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);
}