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.

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

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

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

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

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

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

int	Rast__null_bitstream_size (int cols)
	Determines null bitstream size.

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 133 of file alloc_cell.c.

References G_calloc, and Rast__null_bitstream_size().

Referenced by Rast__open_null_write(), and Rast__open_old().

◆ 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 146 of file alloc_cell.c.

References _, and G_fatal_error().

Referenced by G__set_flags_from_01_random(), Rast__allocate_null_bits(), Rast__convert_01_flags(), Rast__convert_flags_01(), Rast__init_null_bits(), Rast__read_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 53 of file alloc_cell.c.

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

Referenced by N_read_rast_to_array_2d(), N_write_array_2d_to_rast(), and P_Aux_to_Raster().

◆ 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:80

CELL

int CELL

Definition gis.h:634

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 80 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

Referenced by create_raster(), Gs_get_cat_label(), I_compute_scatts(), IL_create_bitmask(), open_band_files(), and Rast_map_to_img_str().

◆ Rast_allocate_c_input_buf()

CELL * Rast_allocate_c_input_buf ( void )

Definition at line 160 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 185 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 106 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

Referenced by Gs_get_cat_label(), Rast_get_sample_bilinear(), Rast_get_sample_cubic(), Rast_get_sample_nearest(), and Rast_map_to_img_str().

◆ Rast_allocate_d_input_buf()

DCELL * Rast_allocate_d_input_buf ( void )

Definition at line 170 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 195 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 93 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

Referenced by IL_output_2d(), and Rast_map_to_img_str().

◆ Rast_allocate_f_input_buf()

FCELL * Rast_allocate_f_input_buf ( void )

Definition at line 165 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 190 of file alloc_cell.c.

References G_calloc, and Rast_output_window_cols().

Referenced by IL_resample_output_2d().

◆ Rast_allocate_input_buf()

void * Rast_allocate_input_buf ( RASTER_MAP_TYPE data_type )

Definition at line 155 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 119 of file alloc_cell.c.

References G_calloc, and Rast_window_cols().

Referenced by I_compute_scatts(), and I_insert_patch_to_cat_rast().

◆ Rast_allocate_null_input_buf()

char * Rast_allocate_null_input_buf ( void )

Definition at line 175 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 200 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 180 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 37 of file alloc_cell.c.

References F2I.

Referenced by D_draw_raster_RGB(), f_median(), f_nmedian(), N_read_rast_to_array_2d(), P_Aux_to_Raster(), Rast__lookup_colors(), Rast__set_null_value(), Rast_allocate_buf(), Rast_allocate_input_buf(), Rast_allocate_output_buf(), Rast_get_row_colors(), Rast_get_vrt_row(), Rast_mark_cats(), 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()