dvdata.c File Reference

Constants for DV codec. More...

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

Go to the source code of this file.

Variables
const uint8_t	ff_dv_zigzag248_direct [64]
const uint8_t	ff_dv_quant_shifts [22][4]
const uint8_t	ff_dv_quant_offset [4] = { 6, 3, 0, 1 }
const int	ff_dv_iweight_88 [64]
const int	ff_dv_iweight_248 [64]
const int	ff_dv_iweight_1080_y [64]
	The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
const int	ff_dv_iweight_1080_c [64]
const int	ff_dv_iweight_720_y [64]
const int	ff_dv_iweight_720_c [64]
const uint16_t	ff_dv_vlc_bits [NB_DV_VLC]
const uint8_t	ff_dv_vlc_len [NB_DV_VLC]
const uint8_t	ff_dv_vlc_run [NB_DV_VLC]
const uint8_t	ff_dv_vlc_level [NB_DV_VLC]

Detailed Description

Constants for DV codec.

Definition in file dvdata.c.

Variable Documentation

const uint8_t ff_dv_zigzag248_direct[64]

Initial value:

= {
     0,  8,  1,  9, 16, 24,  2, 10,
    17, 25, 32, 40, 48, 56, 33, 41,
    18, 26,  3, 11,  4, 12, 19, 27,
    34, 42, 49, 57, 50, 58, 35, 43,
    20, 28,  5, 13,  6, 14, 21, 29,
    36, 44, 51, 59, 52, 60, 37, 45,
    22, 30,  7, 15, 23, 31, 38, 46,
    53, 61, 54, 62, 39, 47, 55, 63,
}

Definition at line 33 of file dvdata.c.

Referenced by dv_init_enc_block(), and dvvideo_decode_init().

const uint8_t ff_dv_quant_shifts[22][4]

Initial value:

= {
    { 3, 3, 4, 4 },
    { 3, 3, 4, 4 },
    { 2, 3, 3, 4 },
    { 2, 3, 3, 4 },
    { 2, 2, 3, 3 },
    { 2, 2, 3, 3 },
    { 1, 2, 2, 3 },
    { 1, 2, 2, 3 },
    { 1, 1, 2, 2 },
    { 1, 1, 2, 2 },
    { 0, 1, 1, 2 },
    { 0, 1, 1, 2 },
    { 0, 0, 1, 1 },
    { 0, 0, 1, 1 },
    { 0, 0, 0, 1 },
    { 0, 0, 0, 0 },
    { 0, 0, 0, 0 },
    { 0, 0, 0, 0 },
    { 0, 0, 0, 0 },
    { 0, 0, 0, 0 },
    { 0, 0, 0, 0 },
    { 0, 0, 0, 0 },
}

Definition at line 45 of file dvdata.c.

Referenced by dv_guess_qnos(), and ff_dv_init_dynamic_tables().

const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 }

Definition at line 70 of file dvdata.c.

Referenced by dv_decode_video_segment(), and dv_guess_qnos().

const int ff_dv_iweight_88[64]

Initial value:

= {
    32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,
    18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,
    19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,
    20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,
    20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,
    21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,
    24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,
    25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,
}

Definition at line 72 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_248[64]

Initial value:

= {
    32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,
    19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,
    20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,
    17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,
    21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,
    18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,
    24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,
    22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,
}

Definition at line 82 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_1080_y[64]

Initial value:

= {
    128,  16,  16,  17,  17,  17,  18,  18,
     18,  18,  18,  18,  19,  18,  18,  19,
     19,  19,  19,  19,  19,  42,  38,  40,
     40,  40,  38,  42,  44,  43,  41,  41,
     41,  41,  43,  44,  45,  45,  42,  42,
     42,  45,  45,  48,  46,  43,  43,  46,
     48,  49,  48,  44,  48,  49, 101,  98,
     98, 101, 104, 109, 104, 116, 116, 123,
}

The "inverse" DV100 weights are actually just the spec weights (zig-zagged).

Definition at line 96 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_1080_c[64]

Initial value:

= {
    128,  16,  16,  17,  17,  17,  25,  25,
     25,  25,  26,  25,  26,  25,  26,  26,
     26,  27,  27,  26,  26,  42,  38,  40,
     40,  40,  38,  42,  44,  43,  41,  41,
     41,  41,  43,  44,  91,  91,  84,  84,
     84,  91,  91,  96,  93,  86,  86,  93,
     96, 197, 191, 177, 191, 197, 203, 197,
    197, 203, 209, 219, 209, 232, 232, 246,
}

Definition at line 106 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_720_y[64]

Initial value:

= {
    128,  16,  16,  17,  17,  17,  18,  18,
     18,  18,  18,  18,  19,  18,  18,  19,
     19,  19,  19,  19,  19,  42,  38,  40,
     40,  40,  38,  42,  44,  43,  41,  41,
     41,  41,  43,  44,  68,  68,  63,  63,
     63,  68,  68,  96,  92,  86,  86,  92,
     96,  98,  96,  88,  96,  98, 202, 196,
    196, 202, 208, 218, 208, 232, 232, 246,
}

Definition at line 116 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_720_c[64]

Initial value:

= {
    128,  24,  24,  26,  26,  26,  36,  36,
     36,  36,  36,  36,  38,  36,  36,  38,
     38,  38,  38,  38,  38,  84,  76,  80,
     80,  80,  76,  84,  88,  86,  82,  82,
     82,  82,  86,  88, 182, 182, 168, 168,
    168, 182, 182, 192, 186, 192, 172, 186,
    192, 394, 382, 354, 382, 394, 406, 394,
    394, 406, 418, 438, 418, 464, 464, 492,
}

Definition at line 126 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const uint16_t ff_dv_vlc_bits[NB_DV_VLC]

Definition at line 142 of file dvdata.c.

Referenced by dv_vlc_map_tableinit(), and ff_dvvideo_init().

const uint8_t ff_dv_vlc_len[NB_DV_VLC]

Definition at line 197 of file dvdata.c.

Referenced by dv_vlc_map_tableinit(), and ff_dvvideo_init().

const uint8_t ff_dv_vlc_run[NB_DV_VLC]

Definition at line 252 of file dvdata.c.

Referenced by dv_vlc_map_tableinit(), and ff_dvvideo_init().

const uint8_t ff_dv_vlc_level[NB_DV_VLC]

Definition at line 307 of file dvdata.c.

Referenced by dv_vlc_map_tableinit(), and ff_dvvideo_init().