_rti_iterator_arg_callback_init()

static int _rti_iterator_arg_callback_init ( _rti_iterator_arg  _param )

static

Definition at line 700 of file rt_mapalgebra.c.

References _rti_iterator_arg_t::arg, _rti_iterator_arg_t::columns, rt_iterator_arg_t::columns, _rti_iterator_arg_t::count, _rti_iterator_arg_t::dimension, rt_iterator_arg_t::dst_pixel, rt_iterator_arg_t::nodata, rt_iterator_arg_t::rasters, _rti_iterator_arg_t::rows, rt_iterator_arg_t::rows, rtalloc(), rterror(), rt_iterator_arg_t::src_pixel, and rt_iterator_arg_t::values.

Referenced by rt_raster_iterator().

                                                          {
        int i = 0;

        _param->arg = rtalloc(sizeof(struct rt_iterator_arg_t));
        if (_param->arg == NULL) {
                rterror("_rti_iterator_arg_callback_init: Could not allocate memory for rt_iterator_arg");
                return 0;
        }

        _param->arg->values = NULL;
        _param->arg->nodata = NULL;
        _param->arg->src_pixel = NULL;

        /* initialize argument components */
        _param->arg->values = rtalloc(sizeof(double **) * _param->count);
        _param->arg->nodata = rtalloc(sizeof(int **) * _param->count);
        _param->arg->src_pixel = rtalloc(sizeof(int *) * _param->count);
        if (_param->arg->values == NULL || _param->arg->nodata == NULL || _param->arg->src_pixel == NULL) {
                rterror("_rti_iterator_arg_callback_init: Could not allocate memory for element of rt_iterator_arg");
                return 0;
        }
        memset(_param->arg->values, 0, sizeof(double **) * _param->count);
        memset(_param->arg->nodata, 0, sizeof(int **) * _param->count);

        /* initialize pos */
        for (i = 0; i < _param->count; i++) {

                _param->arg->src_pixel[i] = rtalloc(sizeof(int) * 2);
                if (_param->arg->src_pixel[i] == NULL) {
                        rterror("_rti_iterator_arg_callback_init: Could not allocate memory for position elements of rt_iterator_arg");
                        return 0;
                }
                memset(_param->arg->src_pixel[i], 0, sizeof(int) * 2);
        }

        _param->arg->rasters = _param->count;
        _param->arg->rows = _param->dimension.rows;
        _param->arg->columns = _param->dimension.columns;

        _param->arg->dst_pixel[0] = 0;
        _param->arg->dst_pixel[1] = 0;

        return 1;
}

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