static status_t
add_to_message(TReadHelper& source, BMessage& target, tiff_tag& tag,
const char* name, type_code type)
{
type_code defaultType = B_INT32_TYPE;
double doubleValue = 0.0;
int32 intValue = 0;
switch (tag.type) {
case TIFF_STRING_TYPE:
{
if (type != B_ANY_TYPE && type != B_STRING_TYPE)
return B_BAD_VALUE;
char* buffer = (char*)malloc(tag.length);
if (buffer == NULL)
return B_NO_MEMORY;
source(buffer, tag.length);
// remove trailing spaces
int32 i = tag.length;
while ((--i > 0 && isspace(buffer[i])) || !buffer[i]) {
buffer[i] = '\0';
}
status_t status = target.AddString(name, buffer);
free(buffer);
return status;
}
case TIFF_UNDEFINED_TYPE:
{
if (type != B_ANY_TYPE && type != B_STRING_TYPE && type != B_RAW_TYPE)
return B_BAD_VALUE;
char* buffer = (char*)malloc(tag.length);
if (buffer == NULL)
return B_NO_MEMORY;
source(buffer, tag.length);
status_t status;
if (type == B_STRING_TYPE)
status = target.AddString(name, buffer);
else
status = target.AddData(name, B_RAW_TYPE, buffer, tag.length);
free(buffer);
return status;
}
// unsigned
case TIFF_UINT8_TYPE:
intValue = source.Next<uint8>();
break;
case TIFF_UINT16_TYPE:
defaultType = B_INT32_TYPE;
intValue = source.Next<uint16>();
break;
case TIFF_UINT32_TYPE:
defaultType = B_INT32_TYPE;
intValue = source.Next<uint32>();
break;
case TIFF_UFRACTION_TYPE:
{
defaultType = B_DOUBLE_TYPE;
double value = source.Next<uint32>();
doubleValue = value / source.Next<uint32>();
break;
}
// signed
case TIFF_INT8_TYPE:
intValue = source.Next<int8>();
break;
case TIFF_INT16_TYPE:
intValue = source.Next<int16>();
break;
case TIFF_INT32_TYPE:
intValue = source.Next<int32>();
break;
case TIFF_FRACTION_TYPE:
{
defaultType = B_DOUBLE_TYPE;
double value = source.Next<int32>();
doubleValue = value / source.Next<int32>();
break;
}
// floating point
case TIFF_FLOAT_TYPE:
defaultType = B_FLOAT_TYPE;
doubleValue = source.Next<float>();
break;
case TIFF_DOUBLE_TYPE:
defaultType = B_DOUBLE_TYPE;
doubleValue = source.Next<double>();
break;
default:
return B_BAD_VALUE;
}
if (defaultType == B_INT32_TYPE)
doubleValue = intValue;
else
intValue = int32(doubleValue + 0.5);
if (type == B_ANY_TYPE)
type = defaultType;
switch (type) {
case B_INT32_TYPE:
return target.AddInt32(name, intValue);
case B_FLOAT_TYPE:
return target.AddFloat(name, doubleValue);
case B_DOUBLE_TYPE:
return target.AddDouble(name, doubleValue);
default:
return B_BAD_VALUE;
}
}
status_t add_rel_time(BMessage& msg, const char* name, AmTime timeVal)
{
return msg.AddDouble(name, double(timeVal)/PPQN);
}