dcaenc.h File Reference

#include <stdint.h>
#include "dcamath.h"

Go to the source code of this file.

Data Structures
struct	softfloat

Functions
static int32_t	quantize_value (int32_t value, softfloat quant)

Variables
static const int	sample_rates []
static const uint8_t	bitstream_sfreq [] = { 1, 2, 3, 6, 7, 8, 11, 12, 13 }
static const uint16_t	fc []
static const uint16_t	erb []
static const softfloat	stepsize_inv [27]
static const softfloat	scalefactor_inv [128]
static const int	bit_consumption [27]
static const int8_t	lfe_index [16]
static const int8_t	channel_reorder_lfe [16][9]
static const int8_t	channel_reorder_nolfe [16][9]

Function Documentation

static int32_t quantize_value ( int32_t  value, softfloat  quant  )

inlinestatic

Definition at line 149 of file dcaenc.h.

Referenced by calc_one_scale(), ff_dcaadpcm_do_real(), put_subframe(), and quantize_pcm().

Variable Documentation

const int sample_rates[]

static

Initial value:

= {
    8000, 16000, 32000, 11025, 22050, 44100, 12000, 24000, 48000, 0,
}

Definition at line 34 of file dcaenc.h.

const uint8_t bitstream_sfreq[] = { 1, 2, 3, 6, 7, 8, 11, 12, 13 }

static

Definition at line 38 of file dcaenc.h.

Referenced by put_frame_header().

const uint16_t fc[]

static

Initial value:

= {
    50, 150, 250, 350, 450, 570, 700, 840, 1000, 1170, 1370, 1600, 1850, 2150,
    2500, 2900, 3400, 4000, 4800, 5800, 7000, 8500, 10500, 13500, 17000
}

Definition at line 43 of file dcaenc.h.

Referenced by create_vorbis_context(), decode_frame(), ff_lzw_decode(), format_to_name(), gammafilter(), imlt_window_float(), nut_write_packet(), opt_default(), and vorbis_encode_frame().

const uint16_t erb[]

static

Initial value:

= {
    80, 100, 100, 100, 110, 120, 140, 150, 160, 190, 210, 240, 280,
    320, 380, 450, 550, 700, 900, 1100, 1300, 1800, 2500, 3500, 4500
}

Definition at line 48 of file dcaenc.h.

Referenced by gammafilter().

const softfloat stepsize_inv[27]

static

Initial value:

= {
    {0, 0}, {1342177360, 21}, {2147483647, 21}, {1342177360, 20},
    {1819901661, 20}, {2147483647, 20}, {1278263843, 19}, {1579032492, 19},
    {1412817763, 18}, {1220162327, 17}, {1118482133, 16}, {1917391412, 16},
    {1766017772, 15}, {1525212826, 14}, {1290553940, 13}, {2097179000, 13},
    {1677683200, 12}, {1497972244, 11}, {1310893147, 10}, {1165354136, 9},
    {1748031204, 9}, {1542092044, 8}, {1636178017, 7}, {1636178017, 6},
    {1636178017, 5}, {1636178017, 4}, {1636178017, 3},
}

Definition at line 53 of file dcaenc.h.

Referenced by calc_one_scale().

const softfloat scalefactor_inv[128]

static

Definition at line 63 of file dcaenc.h.

Referenced by calc_one_scale().

const int bit_consumption[27]

static

Initial value:

= {
    -8, 28, 40, 48, 52, 60, 68, 76, 80, 96,
    112, 128, 144, 160, 176, 192, 208, 224, 240, 256,
    272, 288, 304, 320, 336, 352, 368,
}

Definition at line 101 of file dcaenc.h.

Referenced by init_quantization_noise(), and put_subframe_samples().

const int8_t lfe_index[16]

static

Initial value:

= {
    1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 1, 3, 2, 3
}

Definition at line 107 of file dcaenc.h.

const int8_t channel_reorder_lfe[16][9]

static

Initial value:

= {
    { 0, -1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1, -1, -1, -1, -1, -1, -1 },
    { 0,  1,  3, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  4, -1, -1, -1, -1, -1 },
    { 0,  1,  3,  4, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  4,  5, -1, -1, -1, -1 },
    { 3,  4,  0,  1,  5,  6, -1, -1, -1 },
    { 2,  0,  1,  4,  5,  6, -1, -1, -1 },
    { 0,  6,  4,  5,  2,  3, -1, -1, -1 },
    { 4,  2,  5,  0,  1,  6,  7, -1, -1 },
    { 5,  6,  0,  1,  7,  3,  8,  4, -1 },
    { 4,  2,  5,  0,  1,  6,  8,  7, -1 },
}

Definition at line 111 of file dcaenc.h.

const int8_t channel_reorder_nolfe[16][9]

static

Initial value:

= {
    { 0, -1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1, -1, -1, -1, -1, -1, -1 },
    { 0,  1,  2, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  3, -1, -1, -1, -1, -1 },
    { 0,  1,  2,  3, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  3,  4, -1, -1, -1, -1 },
    { 2,  3,  0,  1,  4,  5, -1, -1, -1 },
    { 2,  0,  1,  3,  4,  5, -1, -1, -1 },
    { 0,  5,  3,  4,  1,  2, -1, -1, -1 },
    { 3,  2,  4,  0,  1,  5,  6, -1, -1 },
    { 4,  5,  0,  1,  6,  2,  7,  3, -1 },
    { 3,  2,  4,  0,  1,  5,  7,  6, -1 },
}

Definition at line 130 of file dcaenc.h.