Raster Library - Raster allocation routines. More...

#include <math.h>
#include <grass/gis.h>
#include <grass/raster.h>
#include <grass/glocale.h>

Include dependency graph for alloc_cell.c:

Macros
#define	F2I(map_type) (map_type == CELL_TYPE ? 0 : (map_type == FCELL_TYPE ? 1 : 2))

Functions
size_t	Rast_cell_size (RASTER_MAP_TYPE data_type)
	Returns size of a raster cell in bytes. More...

void *	Rast_allocate_buf (RASTER_MAP_TYPE data_type)
	Allocate memory for a raster map of given type. More...

CELL *	Rast_allocate_c_buf (void)
	Allocate memory for a CELL type raster map. More...

FCELL *	Rast_allocate_f_buf (void)
	Allocates memory for a raster map of type FCELL. More...

DCELL *	Rast_allocate_d_buf (void)
	Allocates memory for a raster map of type DCELL. More...

char *	Rast_allocate_null_buf (void)
	Allocates memory for a null buffer. More...

unsigned char *	Rast__allocate_null_bits (int cols)
	Allocates memory for null bits. More...

int	Rast__null_bitstream_size (int cols)
	Determines null bitstream size. More...

void *	Rast_allocate_input_buf (RASTER_MAP_TYPE data_type)

CELL *	Rast_allocate_c_input_buf (void)

FCELL *	Rast_allocate_f_input_buf (void)

DCELL *	Rast_allocate_d_input_buf (void)

char *	Rast_allocate_null_input_buf (void)

void *	Rast_allocate_output_buf (RASTER_MAP_TYPE data_type)

CELL *	Rast_allocate_c_output_buf (void)

FCELL *	Rast_allocate_f_output_buf (void)

DCELL *	Rast_allocate_d_output_buf (void)

char *	Rast_allocate_null_output_buf (void)

Detailed Description

Raster Library - Raster allocation routines.

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author: Original author CERL

Definition in file alloc_cell.c.

Macro Definition Documentation

◆ F2I

#define F2I ( map_type ) (map_type == CELL_TYPE ? 0 : (map_type == FCELL_TYPE ? 1 : 2))

Definition at line 21 of file alloc_cell.c.

Function Documentation

◆ Rast__allocate_null_bits()

unsigned char* Rast__allocate_null_bits ( int cols )

Allocates memory for null bits.

Allocates an array of unsigned char based on cols.

Parameters

cols	number of columns in region

Returns: pointer to allocated buffer

Definition at line 134 of file alloc_cell.c.

References G_calloc, and Rast__null_bitstream_size().

◆ Rast__null_bitstream_size()

int Rast__null_bitstream_size ( int cols )

Determines null bitstream size.

Parameters

cols	number of columns

Returns: size of null bitstream

Definition at line 147 of file alloc_cell.c.

References _, and G_fatal_error().

Referenced by Rast__allocate_null_bits(), Rast__convert_01_flags(), Rast__convert_flags_01(), Rast__init_null_bits(), and Rast__write_null_bits().

◆ Rast_allocate_buf()

void* Rast_allocate_buf ( RASTER_MAP_TYPE data_type )

Allocate memory for a raster map of given type.

Allocate an array of CELL, FCELL, or DCELL (depending on data_type) based on the number of columns in the current region.

Parameters

data_type raster type (CELL, FCELL, DCELL)

Returns: pointer to allocated buffer

Definition at line 54 of file alloc_cell.c.

References G_calloc, Rast_cell_size(), and Rast_window_cols().

◆ Rast_allocate_c_buf()

CELL* Rast_allocate_c_buf ( void )

Allocate memory for a CELL type raster map.

Allocate an array of CELL based on the number of columns in the current region.

This routine allocates a buffer of type CELL just large enough to hold one row of raster data based on the number of columns in the active region.

CELL *cell;

cell = Rast_allocate_c_buf();

Rast_allocate_c_buf

CELL * Rast_allocate_c_buf(void)

Allocate memory for a CELL type raster map.

Definition: alloc_cell.c:81

CELL

int CELL

Definition: gis.h:628

If larger buffers are required, the routine G_malloc() can be used. The routine is generally used with each open cell file.

Prints error message and calls exit() on error.

Returns: pointer to allocated buffer

Definition at line 81 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

Referenced by IL_create_bitmask(), and open_band_files().

◆ Rast_allocate_c_input_buf()

CELL* Rast_allocate_c_input_buf ( void )

Definition at line 161 of file alloc_cell.c.

References G_calloc, and Rast_input_window_cols().

◆ Rast_allocate_c_output_buf()

CELL* Rast_allocate_c_output_buf ( void )

Definition at line 186 of file alloc_cell.c.

References G_calloc, and Rast_output_window_cols().

◆ Rast_allocate_d_buf()

DCELL* Rast_allocate_d_buf ( void )

Allocates memory for a raster map of type DCELL.

Allocate an array of DCELL based on the number of columns in the current region.

Returns: pointer to allocated buffer

Definition at line 107 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

◆ Rast_allocate_d_input_buf()

DCELL* Rast_allocate_d_input_buf ( void )

Definition at line 171 of file alloc_cell.c.

References G_calloc, and Rast_input_window_cols().

◆ Rast_allocate_d_output_buf()

DCELL* Rast_allocate_d_output_buf ( void )

Definition at line 196 of file alloc_cell.c.

References G_calloc, and Rast_output_window_cols().

◆ Rast_allocate_f_buf()

FCELL* Rast_allocate_f_buf ( void )

Allocates memory for a raster map of type FCELL.

Allocate an array of FCELL based on the number of columns in the current region.

Returns: pointer to allocated buffer

Definition at line 94 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

◆ Rast_allocate_f_input_buf()

FCELL* Rast_allocate_f_input_buf ( void )

Definition at line 166 of file alloc_cell.c.

References G_calloc, and Rast_input_window_cols().

◆ Rast_allocate_f_output_buf()

FCELL* Rast_allocate_f_output_buf ( void )

Definition at line 191 of file alloc_cell.c.

References G_calloc, and Rast_output_window_cols().

◆ Rast_allocate_input_buf()

void* Rast_allocate_input_buf ( RASTER_MAP_TYPE data_type )

Definition at line 156 of file alloc_cell.c.

References G_calloc, Rast_cell_size(), and Rast_input_window_cols().

Referenced by Rast_get_vrt_row().

◆ Rast_allocate_null_buf()

char* Rast_allocate_null_buf ( void )

Allocates memory for a null buffer.

Allocate an array of char based on the number of columns in the current region.

Returns: pointer to allocated buffer

Definition at line 120 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

◆ Rast_allocate_null_input_buf()

char* Rast_allocate_null_input_buf ( void )

Definition at line 176 of file alloc_cell.c.

References G_calloc, and Rast_input_window_cols().

◆ Rast_allocate_null_output_buf()

char* Rast_allocate_null_output_buf ( void )

Definition at line 201 of file alloc_cell.c.

References G_calloc, and Rast_output_window_cols().

◆ Rast_allocate_output_buf()

void* Rast_allocate_output_buf ( RASTER_MAP_TYPE data_type )

Definition at line 181 of file alloc_cell.c.

References G_calloc, Rast_cell_size(), and Rast_output_window_cols().

◆ Rast_cell_size()

size_t Rast_cell_size ( RASTER_MAP_TYPE data_type )

Returns size of a raster cell in bytes.

If data_type is CELL_TYPE, returns sizeof(CELL)
If data_type is FCELL_TYPE, returns sizeof(FCELL)
If data_type is DCELL_TYPE, returns sizeof(DCELL)

Parameters

data_type raster type (CELL, FCELL, DCELL)

Returns: raster type size

Definition at line 38 of file alloc_cell.c.

Referenced by f_median(), f_nmedian(), Rast__set_null_value(), Rast_allocate_buf(), Rast_allocate_input_buf(), Rast_allocate_output_buf(), Rast_get_vrt_row(), Rast_raster_cpy(), Rast_row_update_fp_range(), Rast_zero_buf(), Rast_zero_input_buf(), and Rast_zero_output_buf().

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ F2I

Function Documentation

◆ Rast__allocate_null_bits()

◆ Rast__null_bitstream_size()

◆ Rast_allocate_buf()

◆ Rast_allocate_c_buf()

◆ Rast_allocate_c_input_buf()

◆ Rast_allocate_c_output_buf()

◆ Rast_allocate_d_buf()

◆ Rast_allocate_d_input_buf()

◆ Rast_allocate_d_output_buf()

◆ Rast_allocate_f_buf()

◆ Rast_allocate_f_input_buf()

◆ Rast_allocate_f_output_buf()

◆ Rast_allocate_input_buf()

◆ Rast_allocate_null_buf()

◆ Rast_allocate_null_input_buf()

◆ Rast_allocate_null_output_buf()

◆ Rast_allocate_output_buf()

◆ Rast_cell_size()