FFmpeg: libavcodec/gsmdec_template.c File Reference

FFmpeg 4.0

libavcodec

GSM decoder. More...

#include "get_bits.h"
#include "gsm.h"
#include "gsmdec_data.h"

Go to the source code of this file.

Functions
static void	apcm_dequant_add (GetBitContext gb, int16_t dst, const int *frame_bits)

static int	gsm_mult (int a, int b)

static void	long_term_synth (int16_t *dst, int lag, int gain_idx)

static int	decode_log_area (int coded, int factor, int offset)

static av_noinline int	get_rrp (int filtered)

static int	filter_value (int in, int rrp[8], int v[9])

static void	short_term_synth (GSMContext ctx, int16_t dst, const int16_t *src)

static int	postprocess (int16_t *data, int msr)

static int	gsm_decode_block (AVCodecContext avctx, int16_t samples, GetBitContext *gb, int mode)

Detailed Description

GSM decoder.

Definition in file gsmdec_template.c.

Function Documentation

◆ apcm_dequant_add()

static void apcm_dequant_add	(	GetBitContext *	gb,
		int16_t *	dst,
		const int *	frame_bits
	)

static

Definition at line 31 of file gsmdec_template.c.

Referenced by gsm_decode_block().

◆ gsm_mult()

static int gsm_mult	(	int	a,
		int	b
	)

inlinestatic

Definition at line 42 of file gsmdec_template.c.

Referenced by decode_log_area(), filter_value(), long_term_synth(), and postprocess().

◆ long_term_synth()

static void long_term_synth	(	int16_t *	dst,
		int	lag,
		int	gain_idx
	)

static

Definition at line 47 of file gsmdec_template.c.

Referenced by gsm_decode_block().

◆ decode_log_area()

static int decode_log_area	(	int	coded,
		int	factor,
		int	offset
	)

inlinestatic

Definition at line 56 of file gsmdec_template.c.

Referenced by gsm_decode_block().

◆ get_rrp()

static av_noinline int get_rrp ( int filtered )

static

Definition at line 63 of file gsmdec_template.c.

Referenced by short_term_synth().

◆ filter_value()

static int filter_value	(	int	in,
		int	rrp[8],
		int	v[9]
	)

static

Definition at line 72 of file gsmdec_template.c.

Referenced by short_term_synth(), vp3_h_loop_filter_c(), and vp3_v_loop_filter_c().

◆ short_term_synth()

static void short_term_synth	(	GSMContext *	ctx,
		int16_t *	dst,
		const int16_t *	src
	)

static

Definition at line 83 of file gsmdec_template.c.

Referenced by gsm_decode_block().

◆ postprocess()

static int postprocess	(	int16_t *	data,
		int	msr
	)

static

Definition at line 112 of file gsmdec_template.c.

Referenced by gsm_decode_block().

◆ gsm_decode_block()

static int gsm_decode_block	(	AVCodecContext *	avctx,
		int16_t *	samples,
		GetBitContext *	gb,
		int	mode
	)

static

Definition at line 122 of file gsmdec_template.c.

Referenced by ff_msgsm_decode_block(), and gsm_decode_frame().