hvirtual/libmpeg3/audio/layer2.c File Reference

#include "mpeg3private.h"
#include "mpeg3protos.h"
#include "tables.h"

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Functions
static int	select_table (mpeg3_layer_t *audio)
static int	step_one (mpeg3_layer_t *audio, unsigned int *bit_alloc, int *scale)
static int	step_two (mpeg3_layer_t *audio, unsigned int *bit_alloc, float fraction[2][4][SBLIMIT], int *scale, int x1)
int	mpeg3audio_dolayer2 (mpeg3_layer_t *audio, char *frame, int frame_size, float **output, int render)
Variables
static struct al_table	alloc_0 []
static struct al_table	alloc_1 []
static struct al_table	alloc_2 []
static struct al_table	alloc_3 []
static struct al_table	alloc_4 []

---

Function Documentation

int mpeg3audio_dolayer2	(	mpeg3_layer_t *	audio,
		char *	frame,
		int	frame_size,
		float **	output,
		int	render
	)

Definition at line 375 of file layer2.c.

References bit_alloc(), mpeg3_layer_t::channels, mpeg3_layer_t::error_protection, mpeg3_layer_t::II_sblimit, mpeg3_layer_t::jsbound, mpeg3_layer_t::mode, mpeg3_layer_t::mode_ext, mpeg3audio_synth_stereo(), mpeg3bits_getbits(), mpeg3bits_use_ptr(), MPG_MD_JOINT_STEREO, SBLIMIT, SCALE_BLOCK, select_table(), mpeg3_layer_t::single, step_one(), step_two(), and mpeg3_layer_t::stream.

Referenced by read_frame().

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static int select_table

(

mpeg3_layer_t *

audio

)

[static]

Definition at line 159 of file layer2.c.

References mpeg3_layer_t::alloc, mpeg3_layer_t::bitrate_index, mpeg3_layer_t::channels, mpeg3_layer_t::II_sblimit, mpeg3_layer_t::lsf, mpeg3_layer_t::sampling_frequency_code, and tables.

Referenced by mpeg3audio_dolayer2().

static int step_one	(	mpeg3_layer_t *	audio,
		unsigned int *	bit_alloc,
		int *	scale
	)			[static]

Definition at line 184 of file layer2.c.

References mpeg3_layer_t::alloc, mpeg3_layer_t::channels, mpeg3_layer_t::II_sblimit, mpeg3_layer_t::jsbound, mpeg3_layer_t::layer2_scfsi_buf, mpeg3bits_getbits(), step, and mpeg3_layer_t::stream.

Referenced by mpeg3audio_dolayer2().

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static int step_two	(	mpeg3_layer_t *	audio,
		unsigned int *	bit_alloc,
		float	fraction[2][4][SBLIMIT],
		int *	scale,
		int	x1
	)			[static]

Definition at line 267 of file layer2.c.

References mpeg3_layer_t::alloc, bits, mpeg3_layer_t::channels, cm, al_table::d, mpeg3_layer_t::II_sblimit, mpeg3_layer_t::jsbound, mpeg3_grp_3tab, mpeg3_grp_5tab, mpeg3_grp_9tab, mpeg3_muls, mpeg3bits_getbits(), step, and mpeg3_layer_t::stream.

Referenced by mpeg3audio_dolayer2().

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Variable Documentation

struct al_table alloc_0[] [static]

Definition at line 11 of file layer2.c.

struct al_table alloc_1[] [static]

Definition at line 51 of file layer2.c.

struct al_table alloc_2[] [static]

Initial value:

 {
        {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
        {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
        {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
        {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} }

Definition at line 94 of file layer2.c.

struct al_table alloc_3[] [static]

Initial value:

 {
        {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
        {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
        {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},
        {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},
        {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} }

Definition at line 106 of file layer2.c.

struct al_table alloc_4[] [static]

Definition at line 122 of file layer2.c.