+
+
+opj_bool mct_encode_custom(
+ // MCT data
+ OPJ_BYTE * pCodingdata,
+ // size of components
+ OPJ_UINT32 n,
+ // components
+ OPJ_BYTE ** pData,
+ // nb of components (i.e. size of pData)
+ OPJ_UINT32 pNbComp,
+ // tells if the data is signed
+ OPJ_UINT32 isSigned)
+{
+ OPJ_FLOAT32 * lMct = (OPJ_FLOAT32 *) pCodingdata;
+ OPJ_UINT32 i;
+ OPJ_UINT32 j;
+ OPJ_UINT32 k;
+ OPJ_UINT32 lNbMatCoeff = pNbComp * pNbComp;
+ OPJ_INT32 * lCurrentData = 00;
+ OPJ_INT32 * lCurrentMatrix = 00;
+ OPJ_INT32 ** lData = (OPJ_INT32 **) pData;
+ OPJ_UINT32 lMultiplicator = 1 << 13;
+ OPJ_INT32 * lMctPtr;
+
+ lCurrentData = (OPJ_INT32 *) opj_malloc((pNbComp + lNbMatCoeff) * sizeof(OPJ_INT32));
+ if (! lCurrentData) {
+ return OPJ_FALSE;
+ }
+
+ lCurrentMatrix = lCurrentData + pNbComp;
+
+ for (i =0;i<lNbMatCoeff;++i) {
+ lCurrentMatrix[i] = (OPJ_INT32) (*(lMct++) * lMultiplicator);
+ }
+
+ for (i = 0; i < n; ++i) {
+ lMctPtr = lCurrentMatrix;
+ for (j=0;j<pNbComp;++j) {
+ lCurrentData[j] = (*(lData[j]));
+ }
+
+ for (j=0;j<pNbComp;++j) {
+ *(lData[j]) = 0;
+ for (k=0;k<pNbComp;++k) {
+ *(lData[j]) += fix_mul(*lMctPtr, lCurrentData[k]);
+ ++lMctPtr;
+ }
+
+ ++lData[j];
+ }
+ }
+
+ opj_free(lCurrentData);
+
+ return OPJ_TRUE;
+}
+
+opj_bool mct_decode_custom(
+ /* MCT data */
+ OPJ_BYTE * pDecodingData,
+ /* size of components */
+ OPJ_UINT32 n,
+ /* components */
+ OPJ_BYTE ** pData,
+ /* nb of components (i.e. size of pData) */
+ OPJ_UINT32 pNbComp,
+ /* tells if the data is signed */
+ OPJ_UINT32 isSigned)
+{
+ OPJ_FLOAT32 * lMct;
+ OPJ_UINT32 i;
+ OPJ_UINT32 j;
+ OPJ_UINT32 k;
+
+ OPJ_FLOAT32 * lCurrentData = 00;
+ OPJ_FLOAT32 * lCurrentResult = 00;
+ OPJ_FLOAT32 ** lData = (OPJ_FLOAT32 **) pData;
+
+ lCurrentData = (OPJ_FLOAT32 *) opj_malloc (2 * pNbComp * sizeof(OPJ_FLOAT32));
+ if
+ (! lCurrentData)
+ {
+ return OPJ_FALSE;
+ }
+ lCurrentResult = lCurrentData + pNbComp;
+
+ for
+ (i = 0; i < n; ++i)
+ {
+ lMct = (OPJ_FLOAT32 *) pDecodingData;
+ for
+ (j=0;j<pNbComp;++j)
+ {
+ lCurrentData[j] = (OPJ_FLOAT32) (*(lData[j]));
+ }
+ for
+ (j=0;j<pNbComp;++j)
+ {
+ lCurrentResult[j] = 0;
+ for
+ (k=0;k<pNbComp;++k)
+ {
+ lCurrentResult[j] += *(lMct++) * lCurrentData[k];
+ }
+ *(lData[j]++) = (OPJ_FLOAT32) (lCurrentResult[j]);
+ }
+ }
+ opj_free(lCurrentData);
+ return OPJ_TRUE;
+}
+
+void opj_calculate_norms( OPJ_FLOAT64 * pNorms,
+ OPJ_UINT32 pNbComps,
+ OPJ_FLOAT32 * pMatrix)
+{
+ OPJ_UINT32 i,j,lIndex;
+ OPJ_FLOAT32 lCurrentValue;
+ OPJ_FLOAT64 * lNorms = (OPJ_FLOAT64 *) pNorms;
+ OPJ_FLOAT32 * lMatrix = (OPJ_FLOAT32 *) pMatrix;
+
+ for (i=0;i<pNbComps;++i) {
+ lNorms[i] = 0;
+ lIndex = i;
+
+ for (j=0;j<pNbComps;++j) {
+ lCurrentValue = lMatrix[lIndex];
+ lIndex += pNbComps;
+ lNorms[i] += lCurrentValue * lCurrentValue;
+ }
+ lNorms[i] = sqrt(lNorms[i]);
+ }
+}