Add integer conversion that can take care of sign extension

BZ: 163707

When using signed integers of size 8 or 16, the bit of sign needs to
be propagated if the API called by the plugin wait for "int" type

Add the virtual toInteger function in CTypeElement for each parameter
type to take care of conversion to "int". Specialize this function in
the class CIntegerParameterType to take care of sign extension.

Change-Id: I41183dccbcc21212299d1dde86b3ad4ba8432ce4
Signed-off-by: Guillaume Denneulin <guillaume.denneulin@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/parameter/SubsystemObject.h b/parameter/SubsystemObject.h
index ca52df8..1c6690d 100644..100755
--- a/parameter/SubsystemObject.h
+++ b/parameter/SubsystemObject.h
@@ -56,6 +56,17 @@ protected:
     static uint32_t asInteger(const string& strValue);
     static string asString(uint32_t uiValue);
 
+    /**
+     * Conversion of int8, int16, int32 to int (taking care of sign extension)
+     *
+     * @param[in] instanceConfigurableElement pointer to configurable element instance
+     * @param[in] sizeOptimizedData data to convert
+     *
+     * @return the data converted to int
+     */
+    int toPlainInteger(const CInstanceConfigurableElement *instanceConfigurableElement,
+                       int sizeOptimizedData);
+
     // Sync to/from HW
     virtual bool sendToHW(string& strError);
     virtual bool receiveFromHW(string& strError);