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avcodec/atrac3plus: Make tables used to initialize VLCs smaller 

The ATRAC3+ decoder currently uses ff_init_vlc_sparse() to initialize
several VLCs; sometimes a symbols table is used, sometimes not; some of
the codes tables are uint16_t, some are uint8_t. Because of these two
latter facts it makes sense to switch to ff_init_vlc_from_lengths()
because it allows to remove the codes at the cost of adding symbols
tables of type uint8_t in the cases where there were none before.

Notice that sometimes the same codes and lengths tables were reused with
two different symbols tables; this could have been preserved (meaning
one could use a lengths table twice), but hasn't, because this allows
to use only one pointer to both the symbols and lengths instead of two
pointers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-01 17:01:53 +01:00
parent cfc473ef10
commit e27466d7e5
2 changed files with 116 additions and 166 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
libavcodec/atrac3plus.c
View File

@ -79,47 +79,24 @@ av_cold void ff_atrac3p_init_vlcs(void)
static const uint8_t wl_nb_bits[4] = { 2, 3, 5, 5 };
static const uint8_t wl_nb_codes[4] = { 3, 5, 8, 8 };
static const uint8_t * const wl_bits[4] = {
atrac3p_wl_huff_bits1, atrac3p_wl_huff_bits2,
atrac3p_wl_huff_bits3, atrac3p_wl_huff_bits4
};
static const uint8_t * const wl_codes[4] = {
atrac3p_wl_huff_code1, atrac3p_wl_huff_code2,
atrac3p_wl_huff_code3, atrac3p_wl_huff_code4
};
static const uint8_t * const wl_xlats[4] = {
atrac3p_wl_huff_xlat1, atrac3p_wl_huff_xlat2, NULL, NULL
static const uint8_t (*const wl_huffs[4])[2] = {
atrac3p_wl_huff1, atrac3p_wl_huff2,
atrac3p_wl_huff3, atrac3p_wl_huff4
};
static const uint8_t ct_nb_bits[4] = { 3, 4, 4, 4 };
static const uint8_t ct_nb_codes[4] = { 4, 8, 8, 8 };
static const uint8_t * const ct_bits[4] = {
atrac3p_ct_huff_bits1, atrac3p_ct_huff_bits2,
atrac3p_ct_huff_bits2, atrac3p_ct_huff_bits3
};
static const uint8_t * const ct_codes[4] = {
atrac3p_ct_huff_code1, atrac3p_ct_huff_code2,
atrac3p_ct_huff_code2, atrac3p_ct_huff_code3
};
static const uint8_t * const ct_xlats[4] = {
NULL, NULL, atrac3p_ct_huff_xlat1, NULL
static const uint8_t (*const ct_huffs[4])[2] = {
atrac3p_ct_huff1, atrac3p_ct_huff2,
atrac3p_ct_huff3, atrac3p_ct_huff4
};
static const uint8_t sf_nb_bits[8] = { 9, 9, 9, 9, 6, 6, 7, 7 };
static const uint8_t sf_nb_codes[8] = { 64, 64, 64, 64, 16, 16, 16, 16 };
static const uint8_t * const sf_bits[8] = {
atrac3p_sf_huff_bits1, atrac3p_sf_huff_bits1, atrac3p_sf_huff_bits2,
atrac3p_sf_huff_bits3, atrac3p_sf_huff_bits4, atrac3p_sf_huff_bits4,
atrac3p_sf_huff_bits5, atrac3p_sf_huff_bits6
};
static const uint16_t * const sf_codes[8] = {
atrac3p_sf_huff_code1, atrac3p_sf_huff_code1, atrac3p_sf_huff_code2,
atrac3p_sf_huff_code3, atrac3p_sf_huff_code4, atrac3p_sf_huff_code4,
atrac3p_sf_huff_code5, atrac3p_sf_huff_code6
};
static const uint8_t * const sf_xlats[8] = {
atrac3p_sf_huff_xlat1, atrac3p_sf_huff_xlat2, NULL, NULL,
atrac3p_sf_huff_xlat4, atrac3p_sf_huff_xlat5, NULL, NULL
static const uint8_t sf_nb_codes[8] = { 64, 64, 64, 64, 15, 15, 15, 15 };
static const uint8_t (*const sf_huffs[8])[2] = {
atrac3p_sf_huff1, atrac3p_sf_huff2, atrac3p_sf_huff3,
atrac3p_sf_huff4, atrac3p_sf_huff5, atrac3p_sf_huff6,
atrac3p_sf_huff7, atrac3p_sf_huff8
};
static const uint8_t * const gain_cbs[11] = {
@ -156,17 +133,15 @@ av_cold void ff_atrac3p_init_vlcs(void)
ct_vlc_tabs[i].table = &tables_data[ct_vlc_offs];
ct_vlc_tabs[i].table_allocated = 1 << ct_nb_bits[i];
ff_init_vlc_sparse(&wl_vlc_tabs[i], wl_nb_bits[i], wl_nb_codes[i],
wl_bits[i], 1, 1,
wl_codes[i], 1, 1,
wl_xlats[i], 1, 1,
INIT_VLC_USE_NEW_STATIC);
ff_init_vlc_from_lengths(&wl_vlc_tabs[i], wl_nb_bits[i], wl_nb_codes[i],
&wl_huffs[i][0][1], 2,
&wl_huffs[i][0][0], 2, 1,
0, INIT_VLC_USE_NEW_STATIC, NULL);
ff_init_vlc_sparse(&ct_vlc_tabs[i], ct_nb_bits[i], ct_nb_codes[i],
ct_bits[i], 1, 1,
ct_codes[i], 1, 1,
ct_xlats[i], 1, 1,
INIT_VLC_USE_NEW_STATIC);
ff_init_vlc_from_lengths(&ct_vlc_tabs[i], ct_nb_bits[i], ct_nb_codes[i],
&ct_huffs[i][0][1], 2,
&ct_huffs[i][0][0], 2, 1,
0, INIT_VLC_USE_NEW_STATIC, NULL);
wl_vlc_offs += wl_vlc_tabs[i].table_allocated;
ct_vlc_offs += ct_vlc_tabs[i].table_allocated;
@ -176,11 +151,10 @@ av_cold void ff_atrac3p_init_vlcs(void)
sf_vlc_tabs[i].table = &tables_data[sf_vlc_offs];
sf_vlc_tabs[i].table_allocated = 1 << sf_nb_bits[i];
ff_init_vlc_sparse(&sf_vlc_tabs[i], sf_nb_bits[i], sf_nb_codes[i],
sf_bits[i], 1, 1,
sf_codes[i], 2, 2,
sf_xlats[i], 1, 1,
INIT_VLC_USE_NEW_STATIC);
ff_init_vlc_from_lengths(&sf_vlc_tabs[i], sf_nb_bits[i], sf_nb_codes[i],
&sf_huffs[i][0][1], 2,
&sf_huffs[i][0][0], 2, 1,
0, INIT_VLC_USE_NEW_STATIC, NULL);
sf_vlc_offs += sf_vlc_tabs[i].table_allocated;
}

210
libavcodec/atrac3plus_data.h
View File

@ -27,148 +27,124 @@
#include <stdint.h>
/** VLC tables for wordlen */
static const uint8_t atrac3p_wl_huff_code1[3] = { 0, 2, 3 };
static const uint8_t atrac3p_wl_huff_bits1[3] = { 1, 2, 2 };
static const uint8_t atrac3p_wl_huff_xlat1[3] = { 0, 1, 7 };
static const uint8_t atrac3p_wl_huff_code2[5] = { 0, 4, 5, 6, 7 };
static const uint8_t atrac3p_wl_huff_bits2[5] = { 1, 3, 3, 3, 3 };
static const uint8_t atrac3p_wl_huff_xlat2[5] = { 0, 1, 2, 6, 7 };
static const uint8_t atrac3p_wl_huff_code3[8] = {
0, 4, 0xC, 0x1E, 0x1F, 0xD, 0xE, 5
static const uint8_t atrac3p_wl_huff1[3][2] = {
{ 0, 1 }, { 1, 2 }, { 7, 2 },
};
static const uint8_t atrac3p_wl_huff_bits3[8] = { 1, 3, 4, 5, 5, 4, 4, 3 };
static const uint8_t atrac3p_wl_huff_code4[8] = {
0, 4, 0xC, 0xD, 0x1E, 0x1F, 0xE, 5
static const uint8_t atrac3p_wl_huff2[5][2] = {
{ 0, 1 }, { 1, 3 }, { 2, 3 }, { 6, 3 }, { 7, 3 },
};
static const uint8_t atrac3p_wl_huff_bits4[8] = { 1, 3, 4, 4, 5, 5, 4, 3 };
static const uint8_t atrac3p_wl_huff3[8][2] = {
{ 0, 1 }, { 1, 3 }, { 7, 3 }, { 2, 4 }, { 5, 4 }, { 6, 4 }, { 3, 5 },
{ 4, 5 },
};
static const uint8_t atrac3p_wl_huff4[8][2] = {
{ 0, 1 }, { 1, 3 }, { 7, 3 }, { 2, 4 }, { 3, 4 }, { 6, 4 }, { 4, 5 },
{ 5, 5 },
};
/** VLC tables for scale factor indexes */
static const uint16_t atrac3p_sf_huff_code1[64] = {
0, 2, 3, 4, 5, 0xC, 0xD, 0xE0,
0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0x1CE, 0x1CF,
0x1D0, 0x1D1, 0x1D2, 0x1D3, 0x1D4, 0x1D5, 0x1D6, 0x1D7,
0x1D8, 0x1D9, 0x1DA, 0x1DB, 0x1DC, 0x1DD, 0x1DE, 0x1DF,
0x1E0, 0x1E1, 0x1E2, 0x1E3, 0x1E4, 0x1E5, 0x1E6, 0x1E7,
0x1E8, 0x1E9, 0x1EA, 0x1EB, 0x1EC, 0x1ED, 0x1EE, 0x1EF,
0x1F0, 0x1F1, 0x1F2, 0x1F3, 0x1F4, 0x1F5, 0x1F6, 0x1F7,
0x1F8, 0x1F9, 0x1FA, 0x1FB, 0x1FC, 0x1FD, 0x1FE, 0x1FF
static const uint8_t atrac3p_sf_huff1[64][2] = {
{ 0, 2 }, { 1, 3 }, { 61, 3 }, { 62, 3 }, { 63, 3 }, { 2, 4 },
{ 60, 4 }, { 3, 8 }, { 4, 8 }, { 5, 8 }, { 6, 8 }, { 57, 8 },
{ 58, 8 }, { 59, 8 }, { 7, 9 }, { 8, 9 }, { 9, 9 }, { 10, 9 },
{ 11, 9 }, { 12, 9 }, { 13, 9 }, { 14, 9 }, { 15, 9 }, { 16, 9 },
{ 17, 9 }, { 18, 9 }, { 19, 9 }, { 20, 9 }, { 21, 9 }, { 22, 9 },
{ 23, 9 }, { 24, 9 }, { 25, 9 }, { 26, 9 }, { 27, 9 }, { 28, 9 },
{ 29, 9 }, { 30, 9 }, { 31, 9 }, { 32, 9 }, { 33, 9 }, { 34, 9 },
{ 35, 9 }, { 36, 9 }, { 37, 9 }, { 38, 9 }, { 39, 9 }, { 40, 9 },
{ 41, 9 }, { 42, 9 }, { 43, 9 }, { 44, 9 }, { 45, 9 }, { 46, 9 },
{ 47, 9 }, { 48, 9 }, { 49, 9 }, { 50, 9 }, { 51, 9 }, { 52, 9 },
{ 53, 9 }, { 54, 9 }, { 55, 9 }, { 56, 9 },
};
static const uint8_t atrac3p_sf_huff_bits1[64] = {
2, 3, 3, 3, 3, 4, 4, 8, 8, 8, 8, 8, 8, 8, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9
static const uint8_t atrac3p_sf_huff2[64][2] = {
{ 0, 2 }, { 1, 3 }, { 2, 3 }, { 62, 3 }, { 63, 3 }, { 3, 4 },
{ 61, 4 }, { 4, 8 }, { 5, 8 }, { 6, 8 }, { 57, 8 }, { 58, 8 },
{ 59, 8 }, { 60, 8 }, { 7, 9 }, { 8, 9 }, { 9, 9 }, { 10, 9 },
{ 11, 9 }, { 12, 9 }, { 13, 9 }, { 14, 9 }, { 15, 9 }, { 16, 9 },
{ 17, 9 }, { 18, 9 }, { 19, 9 }, { 20, 9 }, { 21, 9 }, { 22, 9 },
{ 23, 9 }, { 24, 9 }, { 25, 9 }, { 26, 9 }, { 27, 9 }, { 28, 9 },
{ 29, 9 }, { 30, 9 }, { 31, 9 }, { 32, 9 }, { 33, 9 }, { 34, 9 },
{ 35, 9 }, { 36, 9 }, { 37, 9 }, { 38, 9 }, { 39, 9 }, { 40, 9 },
{ 41, 9 }, { 42, 9 }, { 43, 9 }, { 44, 9 }, { 45, 9 }, { 46, 9 },
{ 47, 9 }, { 48, 9 }, { 49, 9 }, { 50, 9 }, { 51, 9 }, { 52, 9 },
{ 53, 9 }, { 54, 9 }, { 55, 9 }, { 56, 9 },
};
static const uint8_t atrac3p_sf_huff_xlat1[64] = {
0, 1, 61, 62, 63, 2, 60, 3, 4, 5, 6, 57, 58, 59, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56
static const uint8_t atrac3p_sf_huff3[64][2] = {
{ 0, 1 }, { 1, 3 }, { 63, 3 }, { 2, 5 }, { 3, 5 }, { 61, 5 },
{ 62, 5 }, { 4, 7 }, { 60, 7 }, { 59, 8 }, { 5, 9 }, { 6, 9 },
{ 7, 9 }, { 8, 9 }, { 9, 9 }, { 10, 9 }, { 11, 9 }, { 12, 9 },
{ 13, 9 }, { 14, 9 }, { 15, 9 }, { 16, 9 }, { 17, 9 }, { 18, 9 },
{ 19, 9 }, { 20, 9 }, { 21, 9 }, { 22, 9 }, { 23, 9 }, { 24, 9 },
{ 25, 9 }, { 26, 9 }, { 27, 9 }, { 28, 9 }, { 29, 9 }, { 30, 9 },
{ 31, 9 }, { 32, 9 }, { 33, 9 }, { 34, 9 }, { 35, 9 }, { 36, 9 },
{ 37, 9 }, { 38, 9 }, { 39, 9 }, { 40, 9 }, { 41, 9 }, { 42, 9 },
{ 43, 9 }, { 44, 9 }, { 45, 9 }, { 46, 9 }, { 47, 9 }, { 48, 9 },
{ 49, 9 }, { 50, 9 }, { 51, 9 }, { 52, 9 }, { 53, 9 }, { 54, 9 },
{ 55, 9 }, { 56, 9 }, { 57, 9 }, { 58, 9 },
};
static const uint8_t atrac3p_sf_huff_xlat2[64] = {
0, 1, 2, 62, 63, 3, 61, 4, 5, 6, 57, 58, 59, 60, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56
static const uint8_t atrac3p_sf_huff4[64][2] = {
{ 0, 2 }, { 1, 3 }, { 2, 3 }, { 62, 3 }, { 63, 3 }, { 3, 5 },
{ 4, 5 }, { 60, 5 }, { 61, 5 }, { 5, 7 }, { 58, 7 }, { 59, 7 },
{ 6, 9 }, { 7, 9 }, { 8, 9 }, { 9, 9 }, { 10, 9 }, { 11, 9 },
{ 12, 9 }, { 13, 9 }, { 14, 9 }, { 15, 9 }, { 16, 9 }, { 17, 9 },
{ 18, 9 }, { 19, 9 }, { 20, 9 }, { 21, 9 }, { 22, 9 }, { 23, 9 },
{ 24, 9 }, { 25, 9 }, { 26, 9 }, { 27, 9 }, { 28, 9 }, { 29, 9 },
{ 30, 9 }, { 31, 9 }, { 32, 9 }, { 33, 9 }, { 34, 9 }, { 35, 9 },
{ 36, 9 }, { 37, 9 }, { 38, 9 }, { 39, 9 }, { 40, 9 }, { 41, 9 },
{ 42, 9 }, { 43, 9 }, { 44, 9 }, { 45, 9 }, { 46, 9 }, { 47, 9 },
{ 48, 9 }, { 49, 9 }, { 50, 9 }, { 51, 9 }, { 52, 9 }, { 53, 9 },
{ 54, 9 }, { 55, 9 }, { 56, 9 }, { 57, 9 },
};
static const uint16_t atrac3p_sf_huff_code2[64] = {
0, 4, 0x18, 0x19, 0x70, 0x1CA, 0x1CB, 0x1CC,
0x1CD, 0x1CE, 0x1CF, 0x1D0, 0x1D1, 0x1D2, 0x1D3, 0x1D4,
0x1D5, 0x1D6, 0x1D7, 0x1D8, 0x1D9, 0x1DA, 0x1DB, 0x1DC,
0x1DD, 0x1DE, 0x1DF, 0x1E0, 0x1E1, 0x1E2, 0x1E3, 0x1E4,
0x1E5, 0x1E6, 0x1E7, 0x1E8, 0x1E9, 0x1EA, 0x1EB, 0x1EC,
0x1ED, 0x1EE, 0x1EF, 0x1F0, 0x1F1, 0x1F2, 0x1F3, 0x1F4,
0x1F5, 0x1F6, 0x1F7, 0x1F8, 0x1F9, 0x1FA, 0x1FB, 0x1FC,
0x1FD, 0x1FE, 0x1FF, 0xE4, 0x71, 0x1A, 0x1B, 5
static const uint8_t atrac3p_sf_huff5[15][2] = {
{ 0, 2 }, { 1, 3 }, { 13, 3 }, { 14, 3 }, { 15, 3 }, { 2, 4 },
{ 12, 4 }, { 3, 6 }, { 4, 6 }, { 5, 6 }, { 6, 6 }, { 7, 6 },
{ 9, 6 }, { 10, 6 }, { 11, 6 },
};
static const uint8_t atrac3p_sf_huff_bits2[64] = {
1, 3, 5, 5, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 5, 5, 3
static const uint8_t atrac3p_sf_huff6[15][2] = {
{ 0, 2 }, { 1, 3 }, { 2, 3 }, { 14, 3 }, { 15, 3 }, { 3, 4 },
{ 13, 4 }, { 4, 6 }, { 5, 6 }, { 6, 6 }, { 7, 6 }, { 9, 6 },
{ 10, 6 }, { 11, 6 }, { 12, 6 },
};
static const uint16_t atrac3p_sf_huff_code3[64] = {
0, 2, 3, 0x18, 0x19, 0x70, 0x1CC, 0x1CD,
0x1CE, 0x1CF, 0x1D0, 0x1D1, 0x1D2, 0x1D3, 0x1D4, 0x1D5,
0x1D6, 0x1D7, 0x1D8, 0x1D9, 0x1DA, 0x1DB, 0x1DC, 0x1DD,
0x1DE, 0x1DF, 0x1E0, 0x1E1, 0x1E2, 0x1E3, 0x1E4, 0x1E5,
0x1E6, 0x1E7, 0x1E8, 0x1E9, 0x1EA, 0x1EB, 0x1EC, 0x1ED,
0x1EE, 0x1EF, 0x1F0, 0x1F1, 0x1F2, 0x1F3, 0x1F4, 0x1F5,
0x1F6, 0x1F7, 0x1F8, 0x1F9, 0x1FA, 0x1FB, 0x1FC, 0x1FD,
0x1FE, 0x1FF, 0x71, 0x72, 0x1A, 0x1B, 4, 5
static const uint8_t atrac3p_sf_huff7[15][2] = {
{ 0, 1 }, { 1, 3 }, { 15, 3 }, { 2, 4 }, { 14, 4 }, { 3, 5 },
{ 13, 5 }, { 4, 7 }, { 5, 7 }, { 6, 7 }, { 7, 7 }, { 9, 7 },
{ 10, 7 }, { 11, 7 }, { 12, 7 },
};
static const uint8_t atrac3p_sf_huff_bits3[64] = {
2, 3, 3, 5, 5, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3
};
static const uint16_t atrac3p_sf_huff_code4[16] = {
0, 2, 3, 4, 5, 0xC, 0xD, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0, 0x3D, 0x3E, 0x3F
};
static const uint8_t atrac3p_sf_huff_bits4[16] = {
2, 3, 3, 3, 3, 4, 4, 6, 6, 6, 6, 6, 0, 6, 6, 6
};
static const uint8_t atrac3p_sf_huff_xlat4[16] = {
0, 1, 13, 14, 15, 2, 12, 3, 4, 5, 6, 7, 8, 9, 10, 11
};
static const uint8_t atrac3p_sf_huff_xlat5[16] = {
0, 1, 2, 14, 15, 3, 13, 4, 5, 6, 7, 9, 8, 10, 11, 12
};
static const uint16_t atrac3p_sf_huff_code5[16] = {
0, 4, 0xC, 0x1C, 0x78, 0x79, 0x7A, 0x7B,
0, 0x7C, 0x7D, 0x7E, 0x7F, 0x1D, 0xD, 5
};
static const uint8_t atrac3p_sf_huff_bits5[16] = {
1, 3, 4, 5, 7, 7, 7, 7, 0, 7, 7, 7, 7, 5, 4, 3
};
static const uint16_t atrac3p_sf_huff_code6[16] = {
0, 2, 3, 0xC, 0x1C, 0x3C, 0x7C, 0x7D, 0, 0x7E, 0x7F, 0x3D, 0x1D, 0xD, 4, 5
};
static const uint8_t atrac3p_sf_huff_bits6[16] = {
2, 3, 3, 4, 5, 6, 7, 7, 0, 7, 7, 6, 5, 4, 3, 3
static const uint8_t atrac3p_sf_huff8[15][2] = {
{ 0, 2 }, { 1, 3 }, { 2, 3 }, { 14, 3 }, { 15, 3 }, { 3, 4 },
{ 13, 4 }, { 4, 5 }, { 12, 5 }, { 5, 6 }, { 11, 6 }, { 6, 7 },
{ 7, 7 }, { 9, 7 }, { 10, 7 },
};
/** VLC tables for code table indexes */
static const uint8_t atrac3p_ct_huff_code1[4] = { 0, 2, 6, 7 };
static const uint8_t atrac3p_ct_huff_bits1[4] = { 1, 2, 3, 3 };
static const uint8_t atrac3p_ct_huff_code2[8] = { 0, 2, 3, 4, 5, 6, 0xE, 0xF };
static const uint8_t atrac3p_ct_huff_bits2[8] = { 2, 3, 3, 3, 3, 3, 4, 4 };
static const uint8_t atrac3p_ct_huff_xlat1[8] = { 0, 1, 2, 3, 6, 7, 4, 5 };
static const uint8_t atrac3p_ct_huff_code3[8] = {
0, 4, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF
static const uint8_t atrac3p_ct_huff1[4][2] = {
{ 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 3 },
};
static const uint8_t atrac3p_ct_huff_bits3[8] = { 1, 3, 4, 4, 4, 4, 4, 4 };
static const uint8_t atrac3p_ct_huff2[8][2] = {
{ 0, 2 }, { 1, 3 }, { 2, 3 }, { 3, 3 }, { 4, 3 }, { 5, 3 }, { 6, 4 },
{ 7, 4 },
};
static const uint8_t atrac3p_ct_huff3[8][2] = {
{ 0, 2 }, { 1, 3 }, { 2, 3 }, { 3, 3 }, { 6, 3 }, { 7, 3 }, { 4, 4 },
{ 5, 4 },
};
static const uint8_t atrac3p_ct_huff4[8][2] = {
{ 0, 1 }, { 1, 3 }, { 2, 4 }, { 3, 4 }, { 4, 4 }, { 5, 4 }, { 6, 4 },
{ 7, 4 },
};
/* weights for quantized word lengths */
static const int8_t atrac3p_wl_weights[6][32] = {