AT1SUCtx Struct Reference

Sound unit struct, one unit is used per channel. More...

Data Fields
int	log2_block_count [AT1_QMF_BANDS]
	log2 number of blocks in a band More...
int	num_bfus
	number of Block Floating Units More...
float *	spectrum [2]
float	spec1 [AT1_SU_SAMPLES]
	mdct buffer More...
float	spec2 [AT1_SU_SAMPLES]
	mdct buffer More...
float	fst_qmf_delay [46]
	delay line for the 1st stacked QMF filter More...
float	snd_qmf_delay [46]
	delay line for the 2nd stacked QMF filter More...
float	last_qmf_delay [256+39]
	delay line for the last stacked QMF filter More...

Detailed Description

Sound unit struct, one unit is used per channel.

Definition at line 60 of file atrac1.c.

Field Documentation

log2_block_count

int AT1SUCtx::log2_block_count[AT1_QMF_BANDS]

log2 number of blocks in a band

Definition at line 61 of file atrac1.c.

Referenced by at1_imdct_block(), at1_unpack_dequant(), and atrac1_decode_frame().

num_bfus

int AT1SUCtx::num_bfus

number of Block Floating Units

Definition at line 62 of file atrac1.c.

Referenced by at1_unpack_dequant().

spectrum

float* AT1SUCtx::spectrum[2]

Definition at line 63 of file atrac1.c.

Referenced by at1_imdct_block(), and atrac1_decode_init().

spec1

float AT1SUCtx::spec1[AT1_SU_SAMPLES]

mdct buffer

Definition at line 64 of file atrac1.c.

Referenced by atrac1_decode_init().

spec2

float AT1SUCtx::spec2[AT1_SU_SAMPLES]

mdct buffer

Definition at line 65 of file atrac1.c.

Referenced by atrac1_decode_init().

fst_qmf_delay

float AT1SUCtx::fst_qmf_delay[46]

delay line for the 1st stacked QMF filter

Definition at line 66 of file atrac1.c.

Referenced by at1_subband_synthesis().

snd_qmf_delay

float AT1SUCtx::snd_qmf_delay[46]

delay line for the 2nd stacked QMF filter

Definition at line 67 of file atrac1.c.

Referenced by at1_subband_synthesis().

last_qmf_delay

float AT1SUCtx::last_qmf_delay[256+39]

delay line for the last stacked QMF filter

Definition at line 68 of file atrac1.c.

Referenced by at1_subband_synthesis().

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The documentation for this struct was generated from the following file:

• libavcodec/atrac1.c