Function msApplyOutputFormat

mapoutput.c:639–722

/************************************************************************/

void msApplyOutputFormat( outputFormatObj **target, 
                          outputFormatObj *format,
                          int transparent, 
                          int interlaced, 
                          int imagequality )

{
    int       change_needed = MS_FALSE;
    int       old_imagequality, old_interlaced;
    outputFormatObj *formatToFree = NULL;

    assert( target != NULL );
    
    if( *target != NULL && --((*target)->refcount) < 1 )
    {
        formatToFree = *target;
        *target = NULL;
    }

    if( format == NULL )
    {
        if( formatToFree )
            msFreeOutputFormat( formatToFree );
        return;
    }

    msOutputFormatValidate( format, MS_FALSE );

/* -------------------------------------------------------------------- */
/*      Do we need to change any values?  If not, then just apply       */
/*      and return.                                                     */
/* -------------------------------------------------------------------- */
    if( transparent != MS_NOOVERRIDE && !format->transparent != !transparent )
        change_needed = MS_TRUE;

    old_imagequality = atoi(msGetOutputFormatOption( format, "QUALITY", "75"));
    if( imagequality != MS_NOOVERRIDE && old_imagequality != imagequality )
        change_needed = MS_TRUE;

    old_interlaced = 
        strcasecmp(msGetOutputFormatOption( format, "INTERLACE", "ON"),
                   "OFF") != 0;
    if( interlaced != MS_NOOVERRIDE && !interlaced != !old_interlaced )
        change_needed = MS_TRUE;

    if( change_needed )
    {
        char new_value[128];

        if( format->refcount > 0 )
            format = msCloneOutputFormat( format );

        if( transparent != MS_NOOVERRIDE )
        {
            format->transparent = transparent;
            if( format->imagemode == MS_IMAGEMODE_RGB )
                format->imagemode = MS_IMAGEMODE_RGBA;
        }