Converting a document containing RGB images to CMYK (with a profile)

Question

Hi,
I am trying to use PDDocColorConvertPage to convert all RGB images in a PDF document to CMYK (with a color profile).
I can see the API is performing some changes to the PDF however it is not performing the conversion in the same way as Photoshop or Acrobat.
Has anyone tried to do this before? Am I doing it the correct way?
Thanks
Please see additional details below:
Input image:
Converted pdf: http://www.fallenempires.net/misc/out.pdf
Path = ASFileSysCreatePathFromCString (NULL, CMYK_PROFILE);
    err = ASFileSysOpenFile (NULL, Path, ASFILE_READ, &Profile);
    if (err)
        fprintf (stderr, "Unable to open the CMYK profile, \"%s\".\n", CMYK_PROFILE);
        exit (-1);
    ASFileSysReleasePath (NULL, Path);
    ProfileSize = ASFileGetEOF (Profile);
    ProfileBuffer = (ASUns8 *)ASmalloc (ProfileSize);
    ASFileRead (Profile, (char *)ProfileBuffer, ProfileSize);
    ASFileClose (Profile);
    ACMakeBufferProfile (&CMYKProfile, ProfileBuffer, ProfileSize);
    ASfree (ProfileBuffer);
colorConvertAction[0].mMatchAttributesAny = -1;//kColorConvObj_AnyObject;
    colorConvertAction[0].mMatchSpaceTypeAny = -1;//kColorConvAnySpace;
    colorConvertAction[0].mMatchIntent= AC_UseProfileIntent;
    colorConvertAction[0].mConvertIntent = AC_UseProfileIntent;
    colorConvertAction[0].mConvertProfile=CMYKProfile;;
    colorConvertAction[0].mEmbed = true;
    colorConvertAction[0].mPreserveBlack = true;
    colorConvertAction[0].mUseBlackPointCompensation= true;
    colorConvertAction[0].mAction = kColorConvConvert;
    colorConvertAction[0].mIsProcessColor = false;
    colorParams->mActions = colorConvertAction;
    colorParams->mNumActions = 1;
    colorParams->mInks = NULL;
    colorParams->mNumInks = 0;
    pageChanged = false;
    PDDocColorConvertPage( pdDoc , colorParams , 0 , NULL , NULL , 0 , NULL , &pageChanged );

Answer 1

In that case am I using incorrect parameters in the code snippet? The code below does not convert the RGB->CMYK properly.
    inPath = ASFileSysCreatePathFromDIPath( NULL, argv[1] , NULL );
    pdDoc = PDDocOpen( inPath , ASGetDefaultFileSys() , NULL , false );
    ASFileSysReleasePath( NULL , inPath );
    PDColorConvertParams colorParams = (PDColorConvertParams) calloc( 1 , sizeof(PDColorConvertParamsRec) );
    PDColorConvertAction colorConvertAction = (PDColorConvertAction) calloc( 1 , sizeof( PDColorConvertActionRec ) );
    ASBool pageChanged = false;
    AC_Profile  workingProfile;
    ACGetWorkingSpaceProfile  (kACWorkingCMYK, &workingProfile);
    //Populate the PDColorConvertAction data members
    colorConvertAction[0].mMatchAttributesAny = -1;//kColorConvObj_AnyObject;
    colorConvertAction[0].mMatchSpaceTypeAny = -1;//kColorConvAnySpace;
    colorConvertAction[0].mMatchIntent= AC_UseProfileIntent;
    colorConvertAction[0].mConvertIntent = AC_UseProfileIntent;
    colorConvertAction[0].mConvertProfile= workingProfile;
    colorConvertAction[0].mEmbed = true;
    colorConvertAction[0].mPreserveBlack = true;
    colorConvertAction[0].mUseBlackPointCompensation= true;
    colorConvertAction[0].mAction = kColorConvConvert;
    colorConvertAction[0].mIsProcessColor = false;
    colorParams->mActions = colorConvertAction;
    colorParams->mNumActions = 1;
    colorParams->mInks = NULL;
    colorParams->mNumInks = 0;
    pageChanged = false;
    PDDocColorConvertPage( pdDoc , colorParams , 0 , NULL , NULL , 0 , NULL , &pageChanged );
    printf( "page changed to CMYK\n" );
    /* save document to a file */
    outPath = ASFileSysCreatePathFromDIPath( NULL, argv[2] , NULL );
    PDDocSave(pdDoc, PDSaveFull | PDSaveLinearized, outPath, ASGetDefaultFileSys(), NULL, NULL);
    printf( "File saved\n" );