WIP: new image_header struct is used and enable used of cstr_info

[openjpeg.git] / libopenjpeg / mct.c

diff --git a/libopenjpeg/mct.c b/libopenjpeg/mct.c
index 870993b06d250b01f4a8163b960dd00934190224..828b42d1f257e70da3c0120f3ab9192c5f5601b9 100644 (file)
--- a/libopenjpeg/mct.c
+++ b/libopenjpeg/mct.c
@@ -188,3 +188,58 @@ void mct_decode_real(
 double mct_getnorm_real(int compno) {
        return mct_norms_real[compno];
 }
+
+
+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;
+}