PNG_USER_TRANSFORM 1062 pngrtran.c        png_ptr->transformations |= PNG_USER_TRANSFORM;
PNG_USER_TRANSFORM 2097 pngrtran.c        if (png_ptr->transformations & PNG_USER_TRANSFORM)
PNG_USER_TRANSFORM 4962 pngrtran.c        if (png_ptr->transformations & PNG_USER_TRANSFORM)
PNG_USER_TRANSFORM 4356 pngrutil.c        if (png_ptr->transformations & PNG_USER_TRANSFORM)
PNG_USER_TRANSFORM 1539 pngwrite.c        png_ptr->transformations |= PNG_USER_TRANSFORM;
PNG_USER_TRANSFORM  508 pngwtran.c        if (png_ptr->transformations & PNG_USER_TRANSFORM)