#include <stddef.h>
#include "libavutil/macros.h"
#include "dcadata.h"
#include "dcahuff.h"

Macros
#define	SCALES_VLC_BITS 9

#define	DCA_INIT_VLC(vlc, nb_bits, nb_codes, entry_offset)

#define	LBR_INIT_VLC(vlc, nb_bits, nb_codes, entry_offset)

Functions
av_cold void	ff_dca_init_vlcs (void)

Variables
static const uint8_t	bitalloc_12_vlc_bits [DCA_BITALLOC_12_COUNT]

static const uint8_t	tnl_grp_sizes [] = { 37, 34, 31, 28, 23 }

const uint8_t	ff_dca_bitalloc_sizes [DCA_CODE_BOOKS]

const int8_t	ff_dca_bitalloc_offsets [DCA_CODE_BOOKS]

static const uint8_t	bitalloc_maxbits [DCA_CODE_BOOKS][7]

const uint8_t	ff_dca_vlc_src_tables [][2]

VLC	ff_dca_vlc_bit_allocation [5]

VLC	ff_dca_vlc_transition_mode [4]

VLC	ff_dca_vlc_scale_factor [5]

VLC	ff_dca_vlc_quant_index [DCA_CODE_BOOKS][7]

VLC	ff_dca_vlc_tnl_grp [5]

VLC	ff_dca_vlc_tnl_scf

VLC	ff_dca_vlc_damp

VLC	ff_dca_vlc_dph

VLC	ff_dca_vlc_fst_rsd_amp

VLC	ff_dca_vlc_rsd_apprx

VLC	ff_dca_vlc_rsd_amp

VLC	ff_dca_vlc_avg_g3

VLC	ff_dca_vlc_st_grid

VLC	ff_dca_vlc_grid_2

VLC	ff_dca_vlc_grid_3

VLC	ff_dca_vlc_rsd

Macro Definition Documentation

◆ SCALES_VLC_BITS

#define SCALES_VLC_BITS 9

Definition at line 34 of file dcahuff.c.

◆ DCA_INIT_VLC

#define DCA_INIT_VLC	(	vlc,
		nb_bits,
		nb_codes,
		entry_offset
	)

Value:

    do {                                                                    \
        vlc.table           = &dca_table[offset];                           \
        vlc.table_allocated = FF_ARRAY_ELEMS(dca_table) - offset;           \
        ff_init_vlc_from_lengths(&vlc, nb_bits, nb_codes, &src_table[0][1], 2, \
                                 &src_table[0][0], 2, 1, entry_offset,      \
                                 INIT_VLC_STATIC_OVERLONG, NULL);           \
        offset += vlc.table_size;                                           \
        src_table += nb_codes;                                              \
    } while (0)

◆ LBR_INIT_VLC

#define LBR_INIT_VLC	(	vlc,
		nb_bits,
		nb_codes,
		entry_offset
	)

Value:

    do {                                                                \
        vlc.table           = &dca_table[offset];                       \
        vlc.table_allocated = FF_ARRAY_ELEMS(dca_table) - offset;       \
        ff_init_vlc_from_lengths(&vlc, nb_bits, nb_codes, &src_table[0][1], 2, \
                                 &src_table[0][0], 2, 1, entry_offset,  \
                                 INIT_VLC_STATIC_OVERLONG | INIT_VLC_LE,\
                                 NULL);                                 \
        offset += vlc.table_size;                                       \
        src_table += nb_codes;                                          \
    } while (0)

Function Documentation

◆ ff_dca_init_vlcs()

av_cold void ff_dca_init_vlcs ( void )

Definition at line 789 of file dcahuff.c.

Referenced by dcadec_init_static().

Variable Documentation

◆ bitalloc_12_vlc_bits

const uint8_t bitalloc_12_vlc_bits[DCA_BITALLOC_12_COUNT]

static

Initial value:

= {
    9, 7, 7, 9, 9
}

Definition at line 30 of file dcahuff.c.

Referenced by ff_dca_init_vlcs().

◆ tnl_grp_sizes

const uint8_t tnl_grp_sizes[] = { 37, 34, 31, 28, 23 }

static

Definition at line 35 of file dcahuff.c.

Referenced by ff_dca_init_vlcs().

◆ ff_dca_bitalloc_sizes

const uint8_t ff_dca_bitalloc_sizes[DCA_CODE_BOOKS]

Initial value:

= {
    3, 5, 7, 9, 13, 17, 25, 33, 65, 129
}

Definition at line 37 of file dcahuff.c.

Referenced by dcaenc_init_static_tables(), and ff_dca_init_vlcs().

◆ ff_dca_bitalloc_offsets

const int8_t ff_dca_bitalloc_offsets[DCA_CODE_BOOKS]

Initial value:

= {
    -1, -2, -3, -4, -6, -8, -12, -16, -32, -64
}

Definition at line 41 of file dcahuff.c.

Referenced by dcaenc_init_static_tables(), and ff_dca_init_vlcs().

◆ bitalloc_maxbits

const uint8_t bitalloc_maxbits[DCA_CODE_BOOKS][7]

static

Initial value:

= {
    { 2 },
    { 4, 3, 3 },
    { 5, 5, 4 },
    { 6, 5, 6 },
    { 7, 6, 5 },
    { 9, 8, 7, 9, 8, 8, 8 },
    { 9, 9, 8, 9, 8, 9, 9 },
    { 9, 9, 9, 9, 9, 9, 9 },
    { 9, 9, 9, 9, 9, 9, 9 },
    { 9, 9, 9, 9, 9, 9, 9 }
}