Return the error-counter from the decoding

[ingfra]

@msva
For auto-detecting the best illumination of the barcode-image (by the "business" S/W) it would be nice to return the error-counter from the decoding, eg (and removing the non-used argument "fix"):

• dmtxreedsol.c

extern DmtxPassFail 
//RsDecode(unsigned char *code, int sizeIdx, int fix)
RsDecode(unsigned char *code, int sizeIdx, int* errorCount )
...
         repairable = RsFindErrorLocatorPoly(&elp, &syn, blockErrorWords, blockMaxCorrectable, errorCount );

-> where:

static DmtxBoolean
RsFindErrorLocatorPoly(DmtxByteList *elpOut, const DmtxByteList *syn, int errorWordCount, int maxCorrectable, int* errors )
...
   // The number of error codewords aded as an output parameter
   *errors = lambda;

   return (lambda <= maxCorrectable) ? DmtxTrue : DmtxFalse;
}

[ingfra]

Maybe keeping the API and just "wrap" with a new function, eg:

extern DmtxPassFail 
RsDecode(unsigned char *code, int sizeIdx, int fix)
{
    return RsDecodeX(code, sizeIdx, null);
}
extern DmtxPassFail 
RsDecodeX(unsigned char *code, int sizeIdx, int* errorCount )
{
...
         repairable = RsFindErrorLocatorPoly(&elp, &syn, blockErrorWords, blockMaxCorrectable, errorCount );
:::
static DmtxBoolean
RsFindErrorLocatorPoly(DmtxByteList *elpOut, const DmtxByteList *syn, int errorWordCount, int maxCorrectable, int* errors )
...
   // The number of error codewords aded as an output parameter
  if (errors != null) 
     *errors = lambda;
:::