include/gau_file.h File Reference

Gaussian parameter file functions. More...

#include <prim_type.h>
#include <cmd_ln.h>
#include <mmio.h>

Go to the source code of this file.

Data Structures
struct	gau_file_s
Defines
#define	gau_file_set_flag(g, f)   ((g)->flags |= (f))
#define	gau_file_clear_flag(g, f)   ((g)->flags &= ~(f))
#define	gau_file_get_flag(g, f)   ((g)->flags & (f))
Typedefs
typedef struct gau_file_s	gau_file_t
Enumerations
enum	gau_fmt_e {   GAU_FLOAT32 = 0, GAU_FLOAT64 = 1, GAU_INT16 = 2, GAU_INT32 = 3,   GAU_UINT8 = 4, GAU_UINT16 = 5, GAU_UINT32 = 6 }
	Gaussian parameter formats.
enum	gau_file_flags_e { GAU_FILE_MMAP = (1<<0), GAU_FILE_PRECOMP = (1<<1), GAU_FILE_TRANSPOSED = (1<<2), GAU_FILE_NEGATIVE = (1<<3) }
	Values for gau_file_t->flags. More...
enum	gau_file_dimension_e { GAU_FILE_MEAN = 4, GAU_FILE_VAR = 4, GAU_FILE_NORM = 3, GAU_FILE_MIXW = 3 }
	Values for ndim in gau_file_read.
Functions
gau_file_t *	gau_file_read (cmd_ln_t *config, const char *file_name, int ndim)
	Read a Gaussian parameter file.
int	gau_file_write (gau_file_t *gau, const char *file_name, int byteswap)
	Write a Gaussian parameter file.
void	gau_file_free (gau_file_t *gau)
	Release a Gaussian parameter file and associated memory.
size_t	gau_file_get_shape (gau_file_t *gau, int *out_n_gau, int *out_n_feat, int *out_n_density, const int **out_veclen)
	Retrieve the dimensionality of a Gaussian parameter file and number of elements.
void	gau_file_get_size (gau_file_t *gau, size_t *out_nelem, size_t *out_width)
	Retrieve the number of elements in a Gaussian parameter file and their size.
int	gau_file_compatible (gau_file_t *a, gau_file_t *b)
	Verify that two Gaussian parameter files have the same shape.
void *	gau_file_get_data (gau_file_t *gau)
	Get the raw data pointer for a Gaussian parameter file.
void	gau_file_dequantize_float32 (gau_file_t *file, float32 *outmem, float32 outscale)
	Expand quantized data to linear float32.
void	gau_file_dequantize_int32 (gau_file_t *file, int32 *outmem, float32 outscale)
	Expand quantized data to linear int32.
void	gau_file_dequantize_log (gau_file_t *file, int32 *outptr, float32 outscale, float32 logbase)
	Expand quantized data to logarithmic int32.

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Detailed Description

Gaussian parameter file functions.

This is currently a private interface, as it is subject to change.

Definition in file gau_file.h.

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Enumeration Type Documentation

enum gau_file_flags_e

Values for gau_file_t->flags.

Enumerator:

GAU_FILE_MMAP	File uses memory-mapped I/O.
GAU_FILE_PRECOMP	Variance file contains 1/2sigma^2.
GAU_FILE_TRANSPOSED	Dimensions are "transposed", i.e. they go (feature, component, codebook) rather than (codebook, feature, component)
GAU_FILE_NEGATIVE	Unsigned values are negative.

Definition at line 90 of file gau_file.h.

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Function Documentation

void* gau_file_get_data

(

gau_file_t *

gau

)

Get the raw data pointer for a Gaussian parameter file.

Do not assume that this pointer is writable!