AMR gain decoding functions

Functions
static float	fixed_gain_smooth (AMRContext *p, const float *lsf, const float *lsf_avg, const enum Mode mode)
	fixed gain smoothing Note that where the spec specifies the "spectrum in the q domain" in section 6.1.4, in fact frequencies should be used.
static void	decode_gains (AMRContext *p, const AMRNBSubframe *amr_subframe, const enum Mode mode, const int subframe, float *fixed_gain_factor)
	Decode pitch gain and fixed gain factor (part of section 6.1.3).

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Function Documentation

static void decode_gains	(	AMRContext *	p,
		const AMRNBSubframe *	amr_subframe,
		const enum Mode	mode,
		const int	subframe,
		float *	fixed_gain_factor
	)		[static]

Decode pitch gain and fixed gain factor (part of section 6.1.3).

Parameters:

p	the context
amr_subframe	unpacked amr subframe
mode	mode of the current frame
subframe	current subframe number
fixed_gain_factor	decoded gain correction factor

Definition at line 635 of file amrnbdec.c.

Referenced by amrnb_decode_frame().

static float fixed_gain_smooth	(	AMRContext *	p,
		const float *	lsf,
		const float *	lsf_avg,
		const enum Mode	mode
	)		[static]

fixed gain smoothing Note that where the spec specifies the "spectrum in the q domain" in section 6.1.4, in fact frequencies should be used.

Parameters:

p	the context
lsf	LSFs for the current subframe, in the range [0,1]
lsf_avg	averaged LSFs
mode	mode of the current frame

Returns:

fixed gain smoothed

Definition at line 593 of file amrnbdec.c.

Referenced by amrnb_decode_frame().