ENH: Adding the jasper lib to support jpeg2000...and painfully remove tabs

[gdcm.git] / src / gdcmPixelReadConvert.cxx

diff --git a/src/gdcmPixelReadConvert.cxx b/src/gdcmPixelReadConvert.cxx
index d3dfec5b671e7b81d405601c1fdff1fb8490829a..66bcbfdeaad67b93616528281824a9b9730fbe7a 100644 (file)
--- a/src/gdcmPixelReadConvert.cxx
+++ b/src/gdcmPixelReadConvert.cxx
@@ -3,8 +3,8 @@
   Program:   gdcm
   Module:    $RCSfile: gdcmPixelReadConvert.cxx,v $
   Language:  C++
-  Date:      $Date: 2005/02/23 09:54:59 $
-  Version:   $Revision: 1.53 $
+  Date:      $Date: 2005/05/21 18:43:53 $
+  Version:   $Revision: 1.56 $
                                                                                 
   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
   l'Image). All rights reserved. See Doc/License.txt or
@@ -30,6 +30,8 @@
 
 namespace gdcm
 {
+
+extern bool ReadMPEGFile (std::ifstream *fp, void *image_buffer);
 //-----------------------------------------------------------------------------
 #define str2num(str, typeNum) *((typeNum *)(str))
 
@@ -115,6 +117,7 @@ void PixelReadConvert::GrabInformationsFromFile( File *file )
      || Global::GetTS()->GetSpecialTransferSyntax(ts) == TS::ExplicitVRBigEndian
      || Global::GetTS()->GetSpecialTransferSyntax(ts) == TS::DeflatedExplicitVRLittleEndian;
 
+   IsMPEG          = Global::GetTS()->IsMPEG(ts);
    IsJPEG2000      = Global::GetTS()->IsJPEG2000(ts);
    IsJPEGLS        = Global::GetTS()->IsJPEGLS(ts);
    IsJPEGLossy     = Global::GetTS()->IsJPEGLossy(ts);
@@ -250,6 +253,13 @@ bool PixelReadConvert::ReadAndDecompressPixelData( std::ifstream *fp )
          return false;
       }
    }
+   else if ( IsMPEG )
+   {
+      //gdcmWarningMacro( "Sorry, MPEG not yet taken into account" );
+      //return false;
+      ReadMPEGFile(fp, Raw); // fp has already been seek to start of mpeg
+      return true;
+   }
    else
    {
       // Default case concerns JPEG family
@@ -796,10 +806,10 @@ void PixelReadConvert::ConvertYcBcRPlanesToRGBPixels()
    int l        = XSize * YSize;
    int nbFrames = ZSize;
 
-   uint8_t *a = copyRaw;
+   uint8_t *a = copyRaw + 0;
    uint8_t *b = copyRaw + l;
-   uint8_t *c = copyRaw + l + l;
-   double R, G, B;
+   uint8_t *c = copyRaw + l+ l;
+   int32_t R, G, B;
 
    /// \todo : Replace by the 'well known' integer computation
    ///         counterpart. Refer to
@@ -810,16 +820,20 @@ void PixelReadConvert::ConvertYcBcRPlanesToRGBPixels()
    {
       for ( int j = 0; j < l; j++ )
       {
-         R = 1.164 *(*a-16) + 1.596 *(*c -128) + 0.5;
-         G = 1.164 *(*a-16) - 0.813 *(*c -128) - 0.392 *(*b -128) + 0.5;
-         B = 1.164 *(*a-16) + 2.017 *(*b -128) + 0.5;
-
-         if (R < 0.0)   R = 0.0;
-         if (G < 0.0)   G = 0.0;
-         if (B < 0.0)   B = 0.0;
-         if (R > 255.0) R = 255.0;
-         if (G > 255.0) G = 255.0;
-         if (B > 255.0) B = 255.0;
+         R = 38142 *(*a-16) + 52298 *(*c -128);
+         G = 38142 *(*a-16) - 26640 *(*c -128) - 12845 *(*b -128);
+         B = 38142 *(*a-16) + 66093 *(*b -128);
+
+         R = (R+16384)>>15;
+         G = (G+16384)>>15;
+         B = (B+16384)>>15;
+
+         if (R < 0)   R = 0;
+         if (G < 0)   G = 0;
+         if (B < 0)   B = 0;
+         if (R > 255) R = 255;
+         if (G > 255) G = 255;
+         if (B > 255) B = 255;
 
          *(localRaw++) = (uint8_t)R;
          *(localRaw++) = (uint8_t)G;