24 #define VLC_TYPE int16_t 38 #define init_vlc(vlc, nb_bits, nb_codes, \ 39 bits, bits_wrap, bits_size, \ 40 codes, codes_wrap, codes_size, \ 42 ff_init_vlc_sparse(vlc, nb_bits, nb_codes, \ 43 bits, bits_wrap, bits_size, \ 44 codes, codes_wrap, codes_size, \ 48 const void *
bits,
int bits_wrap,
int bits_size,
49 const void *codes,
int codes_wrap,
int codes_size,
50 const void *symbols,
int symbols_wrap,
int symbols_size,
83 const int8_t *lens,
int lens_wrap,
84 const void *symbols,
int symbols_wrap,
int symbols_size,
91 #define INIT_VLC_INPUT_LE 2 93 #define INIT_VLC_OUTPUT_LE 8 94 #define INIT_VLC_LE (INIT_VLC_INPUT_LE | INIT_VLC_OUTPUT_LE) 95 #define INIT_VLC_USE_NEW_STATIC 4 96 #define INIT_VLC_STATIC_OVERLONG (1 | INIT_VLC_USE_NEW_STATIC) 98 #define INIT_CUSTOM_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, \ 99 h, i, j, flags, static_size) \ 101 static VLC_TYPE table[static_size][2]; \ 102 (vlc)->table = table; \ 103 (vlc)->table_allocated = static_size; \ 104 ff_init_vlc_sparse(vlc, bits, a, b, c, d, e, f, g, h, i, j, \ 105 flags | INIT_VLC_USE_NEW_STATIC); \ 108 #define INIT_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, h, i, j, static_size) \ 109 INIT_CUSTOM_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, \ 110 h, i, j, 0, static_size) 112 #define INIT_LE_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, h, i, j, static_size) \ 113 INIT_CUSTOM_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, \ 114 h, i, j, INIT_VLC_LE, static_size) 116 #define INIT_CUSTOM_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, flags, static_size) \ 117 INIT_CUSTOM_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, \ 118 NULL, 0, 0, flags, static_size) 120 #define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \ 121 INIT_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, NULL, 0, 0, static_size) 123 #define INIT_LE_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \ 124 INIT_LE_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, NULL, 0, 0, static_size) 126 #define INIT_VLC_STATIC_FROM_LENGTHS(vlc, bits, nb_codes, lens, len_wrap, \ 127 symbols, symbols_wrap, symbols_size, \ 128 offset, flags, static_size) \ 130 static VLC_TYPE table[static_size][2]; \ 131 (vlc)->table = table; \ 132 (vlc)->table_allocated = static_size; \ 133 ff_init_vlc_from_lengths(vlc, bits, nb_codes, lens, len_wrap, \ 134 symbols, symbols_wrap, symbols_size, \ 135 offset, flags | INIT_VLC_USE_NEW_STATIC, \ void ff_free_vlc(VLC *vlc)
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, const void *symbols, int symbols_wrap, int symbols_size, int flags)
int ff_init_vlc_from_lengths(VLC *vlc, int nb_bits, int nb_codes, const int8_t *lens, int lens_wrap, const void *symbols, int symbols_wrap, int symbols_size, int offset, int flags, void *logctx)
Build VLC decoding tables suitable for use with get_vlc2()
#define flags(name, subs,...)
VLC_TYPE(* table)[2]
code, bits