DSP Context

DSP Context. More...

Data Structures
struct	gavl_dsp_funcs_t
	Function table. More...
Modules
	DSP Utilities
	DSP Utilities.
Typedefs
typedef struct gavl_dsp_context_s	gavl_dsp_context_t
	Opaque DSP context.
Functions
GAVL_PUBLIC gavl_dsp_context_t *	gavl_dsp_context_create ()
	Create a DSP context.
GAVL_PUBLIC void	gavl_dsp_context_set_quality (gavl_dsp_context_t *ctx, int q)
	Set the quality for a DSP context.
GAVL_PUBLIC void	gavl_dsp_context_set_accel_flags (gavl_dsp_context_t *ctx, int flags)
	Set the acceleration flags for a DSP context.
GAVL_PUBLIC gavl_dsp_funcs_t *	gavl_dsp_context_get_funcs (gavl_dsp_context_t *ctx)
	Get the functions.
GAVL_PUBLIC void	gavl_dsp_context_destroy (gavl_dsp_context_t *ctx)
	Destroy a DSP context.

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Detailed Description

DSP Context.

In addition to the higher level gavl converters, gavl provides some low-level dsp routines. They can be used for writing filters or codecs. The DSP context is initialized with a quality parameter (see Quality settings), which selects among various versions of a function.

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Typedef Documentation

typedef struct gavl_dsp_context_s gavl_dsp_context_t

Opaque DSP context.

You don't want to know, what's inside here.

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Function Documentation

GAVL_PUBLIC gavl_dsp_context_t* gavl_dsp_context_create

(

)

Create a DSP context.

Returns:

A newly allocated DSP context

This initialized a DSP context with all functions chosen according to the default quality value.

GAVL_PUBLIC void gavl_dsp_context_set_quality	(	gavl_dsp_context_t *	ctx,
		int	q
	)

Set the quality for a DSP context.

Parameters:

	ctx	A DSP context
	q	A quality level

See Quality settings.

GAVL_PUBLIC void gavl_dsp_context_set_accel_flags	(	gavl_dsp_context_t *	ctx,
		int	flags
	)

Set the acceleration flags for a DSP context.

Parameters:

	ctx	A DSP context
	flags	Flags

By default the flags are detected automatically and functions are chosen based on the quality

GAVL_PUBLIC gavl_dsp_funcs_t* gavl_dsp_context_get_funcs

(

gavl_dsp_context_t *

ctx

)

Get the functions.

Parameters:

ctx

A DSP context

Returns:

The function table

The address of the table itself won't change by a call to gavl_dsp_context_set_quality, but the contained functions will.

GAVL_PUBLIC void gavl_dsp_context_destroy

(

gavl_dsp_context_t *

ctx

)

Destroy a DSP context.

Parameters:

ctx

A DSP context