#include "internal.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h264.h"
#include "h264data.h"
#include "h264_mvpred.h"
#include "golomb.h"
#include <assert.h>
Go to the source code of this file.
Defines | |
| #define | CABAC 0 |
| #define | UNCHECKED_BITSTREAM_READER 1 |
| #define | LEVEL_TAB_BITS 8 |
| #define | CHROMA_DC_COEFF_TOKEN_VLC_BITS 8 |
| #define | CHROMA422_DC_COEFF_TOKEN_VLC_BITS 13 |
| #define | COEFF_TOKEN_VLC_BITS 8 |
| #define | TOTAL_ZEROS_VLC_BITS 9 |
| #define | CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3 |
| #define | CHROMA422_DC_TOTAL_ZEROS_VLC_BITS 5 |
| #define | RUN_VLC_BITS 3 |
| #define | RUN7_VLC_BITS 6 |
| #define | STORE_BLOCK(type) |
Functions | |
| static int | pred_non_zero_count (H264Context *h, int n) |
| gets the predicted number of non-zero coefficients. | |
| static av_cold void | init_cavlc_level_tab (void) |
| av_cold void | ff_h264_decode_init_vlc (void) |
| static int | get_level_prefix (GetBitContext *gb) |
| static int | decode_residual (H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff) |
| decodes a residual block. | |
| static av_always_inline int | decode_luma_residual (H264Context *h, GetBitContext *gb, const uint8_t *scan, const uint8_t *scan8x8, int pixel_shift, int mb_type, int cbp, int p) |
| int | ff_h264_decode_mb_cavlc (H264Context *h) |
| Decode a macroblock. | |
Variables | |
| static const uint8_t | golomb_to_inter_cbp_gray [16] |
| static const uint8_t | golomb_to_intra4x4_cbp_gray [16] |
| static const uint8_t | chroma_dc_coeff_token_len [4 *5] |
| static const uint8_t | chroma_dc_coeff_token_bits [4 *5] |
| static const uint8_t | chroma422_dc_coeff_token_len [4 *9] |
| static const uint8_t | chroma422_dc_coeff_token_bits [4 *9] |
| static const uint8_t | coeff_token_len [4][4 *17] |
| static const uint8_t | coeff_token_bits [4][4 *17] |
| static const uint8_t | total_zeros_len [16][16] |
| static const uint8_t | total_zeros_bits [16][16] |
| static const uint8_t | chroma_dc_total_zeros_len [3][4] |
| static const uint8_t | chroma_dc_total_zeros_bits [3][4] |
| static const uint8_t | chroma422_dc_total_zeros_len [7][8] |
| static const uint8_t | chroma422_dc_total_zeros_bits [7][8] |
| static const uint8_t | run_len [7][16] |
| static const uint8_t | run_bits [7][16] |
| static VLC | coeff_token_vlc [4] |
| static VLC_TYPE | coeff_token_vlc_tables [520+332+280+256][2] |
| static const int | coeff_token_vlc_tables_size [4] = {520,332,280,256} |
| static VLC | chroma_dc_coeff_token_vlc |
| static VLC_TYPE | chroma_dc_coeff_token_vlc_table [256][2] |
| static const int | chroma_dc_coeff_token_vlc_table_size = 256 |
| static VLC | chroma422_dc_coeff_token_vlc |
| static VLC_TYPE | chroma422_dc_coeff_token_vlc_table [8192][2] |
| static const int | chroma422_dc_coeff_token_vlc_table_size = 8192 |
| static VLC | total_zeros_vlc [15] |
| static VLC_TYPE | total_zeros_vlc_tables [15][512][2] |
| static const int | total_zeros_vlc_tables_size = 512 |
| static VLC | chroma_dc_total_zeros_vlc [3] |
| static VLC_TYPE | chroma_dc_total_zeros_vlc_tables [3][8][2] |
| static const int | chroma_dc_total_zeros_vlc_tables_size = 8 |
| static VLC | chroma422_dc_total_zeros_vlc [7] |
| static VLC_TYPE | chroma422_dc_total_zeros_vlc_tables [7][32][2] |
| static const int | chroma422_dc_total_zeros_vlc_tables_size = 32 |
| static VLC | run_vlc [6] |
| static VLC_TYPE | run_vlc_tables [6][8][2] |
| static const int | run_vlc_tables_size = 8 |
| static VLC | run7_vlc |
| static VLC_TYPE | run7_vlc_table [96][2] |
| static const int | run7_vlc_table_size = 96 |
| static int8_t | cavlc_level_tab [7][1<< LEVEL_TAB_BITS][2] |
Definition in file h264_cavlc.c.
| #define CABAC 0 |
Definition at line 28 of file h264_cavlc.c.
| #define CHROMA422_DC_COEFF_TOKEN_VLC_BITS 13 |
Definition at line 276 of file h264_cavlc.c.
Referenced by decode_residual(), and ff_h264_decode_init_vlc().
| #define CHROMA422_DC_TOTAL_ZEROS_VLC_BITS 5 |
Definition at line 280 of file h264_cavlc.c.
Referenced by decode_residual(), and ff_h264_decode_init_vlc().
| #define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8 |
Definition at line 275 of file h264_cavlc.c.
Referenced by decode_residual(), and ff_h264_decode_init_vlc().
| #define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3 |
Definition at line 279 of file h264_cavlc.c.
Referenced by decode_residual(), and ff_h264_decode_init_vlc().
| #define COEFF_TOKEN_VLC_BITS 8 |
Definition at line 277 of file h264_cavlc.c.
Referenced by decode_residual(), and ff_h264_decode_init_vlc().
| #define LEVEL_TAB_BITS 8 |
Definition at line 272 of file h264_cavlc.c.
Referenced by decode_residual(), and init_cavlc_level_tab().
| #define RUN7_VLC_BITS 6 |
| #define RUN_VLC_BITS 3 |
| #define STORE_BLOCK | ( | type | ) |
| #define TOTAL_ZEROS_VLC_BITS 9 |
Definition at line 278 of file h264_cavlc.c.
Referenced by decode_residual(), and ff_h264_decode_init_vlc().
| #define UNCHECKED_BITSTREAM_READER 1 |
Definition at line 29 of file h264_cavlc.c.
| static av_always_inline int decode_luma_residual | ( | H264Context * | h, | |
| GetBitContext * | gb, | |||
| const uint8_t * | scan, | |||
| const uint8_t * | scan8x8, | |||
| int | pixel_shift, | |||
| int | mb_type, | |||
| int | cbp, | |||
| int | p | |||
| ) | [static] |
| static int decode_residual | ( | H264Context * | h, | |
| GetBitContext * | gb, | |||
| DCTELEM * | block, | |||
| int | n, | |||
| const uint8_t * | scantable, | |||
| const uint32_t * | qmul, | |||
| int | max_coeff | |||
| ) | [static] |
decodes a residual block.
| n | block index | |
| scantable | scantable | |
| max_coeff | number of coefficients in the block |
Definition at line 446 of file h264_cavlc.c.
Referenced by decode_luma_residual(), and ff_h264_decode_mb_cavlc().
| av_cold void ff_h264_decode_init_vlc | ( | void | ) |
| int ff_h264_decode_mb_cavlc | ( | H264Context * | h | ) |
Decode a macroblock.
Definition at line 695 of file h264_cavlc.c.
Referenced by decode_slice().
| static int get_level_prefix | ( | GetBitContext * | gb | ) | [inline, static] |
| static av_cold void init_cavlc_level_tab | ( | void | ) | [static] |
| static int pred_non_zero_count | ( | H264Context * | h, | |
| int | n | |||
| ) | [inline, static] |
gets the predicted number of non-zero coefficients.
| n | block index |
Definition at line 288 of file h264_cavlc.c.
Referenced by decode_residual().
int8_t cavlc_level_tab[7][1<< LEVEL_TAB_BITS][2] [static] |
Definition at line 273 of file h264_cavlc.c.
Referenced by decode_residual(), and init_cavlc_level_tab().
const uint8_t chroma422_dc_coeff_token_bits[4 *9] [static] |
Initial value:
{
1, 0, 0, 0,
15, 1, 0, 0,
14, 13, 1, 0,
7, 12, 11, 1,
6, 5, 10, 1,
7, 6, 4, 9,
7, 6, 5, 8,
7, 6, 5, 4,
7, 5, 4, 4,
}
Definition at line 78 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
const uint8_t chroma422_dc_coeff_token_len[4 *9] [static] |
Initial value:
{
1, 0, 0, 0,
7, 2, 0, 0,
7, 7, 3, 0,
9, 7, 7, 5,
9, 9, 7, 6,
10, 10, 9, 7,
11, 11, 10, 7,
12, 12, 11, 10,
13, 12, 12, 11,
}
Definition at line 66 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
VLC chroma422_dc_coeff_token_vlc [static] |
Definition at line 248 of file h264_cavlc.c.
VLC_TYPE chroma422_dc_coeff_token_vlc_table[8192][2] [static] |
const int chroma422_dc_coeff_token_vlc_table_size = 8192 [static] |
const uint8_t chroma422_dc_total_zeros_bits[7][8] [static] |
Initial value:
{
{ 1, 2, 3, 2, 3, 1, 1, 0 },
{ 0, 1, 1, 4, 5, 6, 7 },
{ 0, 1, 1, 2, 6, 7 },
{ 6, 0, 1, 2, 7 },
{ 0, 1, 2, 3 },
{ 0, 1, 1 },
{ 0, 1 },
}
Definition at line 210 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
const uint8_t chroma422_dc_total_zeros_len[7][8] [static] |
Initial value:
{
{ 1, 3, 3, 4, 4, 4, 5, 5 },
{ 3, 2, 3, 3, 3, 3, 3 },
{ 3, 3, 2, 2, 3, 3 },
{ 3, 2, 2, 2, 3 },
{ 2, 2, 2, 2 },
{ 2, 2, 1 },
{ 1, 1 },
}
Definition at line 200 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
VLC chroma422_dc_total_zeros_vlc[7] [static] |
Definition at line 260 of file h264_cavlc.c.
VLC_TYPE chroma422_dc_total_zeros_vlc_tables[7][32][2] [static] |
const int chroma422_dc_total_zeros_vlc_tables_size = 32 [static] |
const uint8_t chroma_dc_coeff_token_bits[4 *5] [static] |
Initial value:
{
1, 0, 0, 0,
7, 1, 0, 0,
4, 6, 1, 0,
3, 3, 2, 5,
2, 3, 2, 0,
}
Definition at line 58 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
const uint8_t chroma_dc_coeff_token_len[4 *5] [static] |
Initial value:
{
2, 0, 0, 0,
6, 1, 0, 0,
6, 6, 3, 0,
6, 7, 7, 6,
6, 8, 8, 7,
}
Definition at line 50 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
VLC chroma_dc_coeff_token_vlc [static] |
Definition at line 244 of file h264_cavlc.c.
VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2] [static] |
const int chroma_dc_coeff_token_vlc_table_size = 256 [static] |
const uint8_t chroma_dc_total_zeros_bits[3][4] [static] |
Initial value:
{
{ 1, 1, 1, 0,},
{ 1, 1, 0, 0,},
{ 1, 0, 0, 0,},
}
Definition at line 194 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
const uint8_t chroma_dc_total_zeros_len[3][4] [static] |
Initial value:
{
{ 1, 2, 3, 3,},
{ 1, 2, 2, 0,},
{ 1, 1, 0, 0,},
}
Definition at line 188 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
VLC chroma_dc_total_zeros_vlc[3] [static] |
Definition at line 256 of file h264_cavlc.c.
VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2] [static] |
const int chroma_dc_total_zeros_vlc_tables_size = 8 [static] |
const uint8_t coeff_token_bits[4][4 *17] [static] |
Initial value:
{
{
1, 0, 0, 0,
5, 1, 0, 0, 7, 4, 1, 0, 7, 6, 5, 3, 7, 6, 5, 3,
7, 6, 5, 4, 15, 6, 5, 4, 11,14, 5, 4, 8,10,13, 4,
15,14, 9, 4, 11,10,13,12, 15,14, 9,12, 11,10,13, 8,
15, 1, 9,12, 11,14,13, 8, 7,10, 9,12, 4, 6, 5, 8,
},
{
3, 0, 0, 0,
11, 2, 0, 0, 7, 7, 3, 0, 7,10, 9, 5, 7, 6, 5, 4,
4, 6, 5, 6, 7, 6, 5, 8, 15, 6, 5, 4, 11,14,13, 4,
15,10, 9, 4, 11,14,13,12, 8,10, 9, 8, 15,14,13,12,
11,10, 9,12, 7,11, 6, 8, 9, 8,10, 1, 7, 6, 5, 4,
},
{
15, 0, 0, 0,
15,14, 0, 0, 11,15,13, 0, 8,12,14,12, 15,10,11,11,
11, 8, 9,10, 9,14,13, 9, 8,10, 9, 8, 15,14,13,13,
11,14,10,12, 15,10,13,12, 11,14, 9,12, 8,10,13, 8,
13, 7, 9,12, 9,12,11,10, 5, 8, 7, 6, 1, 4, 3, 2,
},
{
3, 0, 0, 0,
0, 1, 0, 0, 4, 5, 6, 0, 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, 56,57,58,59, 60,61,62,63,
}
}
Definition at line 121 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
const uint8_t coeff_token_len[4][4 *17] [static] |
Initial value:
{
{
1, 0, 0, 0,
6, 2, 0, 0, 8, 6, 3, 0, 9, 8, 7, 5, 10, 9, 8, 6,
11,10, 9, 7, 13,11,10, 8, 13,13,11, 9, 13,13,13,10,
14,14,13,11, 14,14,14,13, 15,15,14,14, 15,15,15,14,
16,15,15,15, 16,16,16,15, 16,16,16,16, 16,16,16,16,
},
{
2, 0, 0, 0,
6, 2, 0, 0, 6, 5, 3, 0, 7, 6, 6, 4, 8, 6, 6, 4,
8, 7, 7, 5, 9, 8, 8, 6, 11, 9, 9, 6, 11,11,11, 7,
12,11,11, 9, 12,12,12,11, 12,12,12,11, 13,13,13,12,
13,13,13,13, 13,14,13,13, 14,14,14,13, 14,14,14,14,
},
{
4, 0, 0, 0,
6, 4, 0, 0, 6, 5, 4, 0, 6, 5, 5, 4, 7, 5, 5, 4,
7, 5, 5, 4, 7, 6, 6, 4, 7, 6, 6, 4, 8, 7, 7, 5,
8, 8, 7, 6, 9, 8, 8, 7, 9, 9, 8, 8, 9, 9, 9, 8,
10, 9, 9, 9, 10,10,10,10, 10,10,10,10, 10,10,10,10,
},
{
6, 0, 0, 0,
6, 6, 0, 0, 6, 6, 6, 0, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
}
}
Definition at line 90 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
VLC coeff_token_vlc[4] [static] |
Definition at line 240 of file h264_cavlc.c.
VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2] [static] |
const int coeff_token_vlc_tables_size[4] = {520,332,280,256} [static] |
const uint8_t golomb_to_inter_cbp_gray[16] [static] |
Initial value:
{
0, 1, 2, 4, 8, 3, 5,10,12,15, 7,11,13,14, 6, 9,
}
Definition at line 42 of file h264_cavlc.c.
Referenced by ff_h264_decode_mb_cavlc().
const uint8_t golomb_to_intra4x4_cbp_gray[16] [static] |
Initial value:
{
15, 0, 7,11,13,14, 3, 5,10,12, 1, 2, 4, 8, 6, 9,
}
Definition at line 46 of file h264_cavlc.c.
Referenced by ff_h264_decode_mb_cavlc().
Definition at line 268 of file h264_cavlc.c.
VLC_TYPE run7_vlc_table[96][2] [static] |
const int run7_vlc_table_size = 96 [static] |
const uint8_t run_bits[7][16] [static] |
Initial value:
{
{1,0},
{1,1,0},
{3,2,1,0},
{3,2,1,1,0},
{3,2,3,2,1,0},
{3,0,1,3,2,5,4},
{7,6,5,4,3,2,1,1,1,1,1,1,1,1,1},
}
Definition at line 230 of file h264_cavlc.c.
Referenced by codebook_trellis_rate(), encode_window_bands_info(), and ff_h264_decode_init_vlc().
const uint8_t run_len[7][16] [static] |
Initial value:
{
{1,1},
{1,2,2},
{2,2,2,2},
{2,2,2,3,3},
{2,2,3,3,3,3},
{2,3,3,3,3,3,3},
{3,3,3,3,3,3,3,4,5,6,7,8,9,10,11},
}
Definition at line 220 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
Definition at line 264 of file h264_cavlc.c.
VLC_TYPE run_vlc_tables[6][8][2] [static] |
const int run_vlc_tables_size = 8 [static] |
const uint8_t total_zeros_bits[16][16] [static] |
Initial value:
{
{1,3,2,3,2,3,2,3,2,3,2,3,2,3,2,1},
{7,6,5,4,3,5,4,3,2,3,2,3,2,1,0},
{5,7,6,5,4,3,4,3,2,3,2,1,1,0},
{3,7,5,4,6,5,4,3,3,2,2,1,0},
{5,4,3,7,6,5,4,3,2,1,1,0},
{1,1,7,6,5,4,3,2,1,1,0},
{1,1,5,4,3,3,2,1,1,0},
{1,1,1,3,3,2,2,1,0},
{1,0,1,3,2,1,1,1},
{1,0,1,3,2,1,1},
{0,1,1,2,1,3},
{0,1,1,1,1},
{0,1,1,1},
{0,1,1},
{0,1},
}
Definition at line 170 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
const uint8_t total_zeros_len[16][16] [static] |
Initial value:
{
{1,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9},
{3,3,3,3,3,4,4,4,4,5,5,6,6,6,6},
{4,3,3,3,4,4,3,3,4,5,5,6,5,6},
{5,3,4,4,3,3,3,4,3,4,5,5,5},
{4,4,4,3,3,3,3,3,4,5,4,5},
{6,5,3,3,3,3,3,3,4,3,6},
{6,5,3,3,3,2,3,4,3,6},
{6,4,5,3,2,2,3,3,6},
{6,6,4,2,2,3,2,5},
{5,5,3,2,2,2,4},
{4,4,3,3,1,3},
{4,4,2,1,3},
{3,3,1,2},
{2,2,1},
{1,1},
}
Definition at line 152 of file h264_cavlc.c.
Referenced by ff_h264_decode_init_vlc().
VLC total_zeros_vlc[15] [static] |
Definition at line 252 of file h264_cavlc.c.
VLC_TYPE total_zeros_vlc_tables[15][512][2] [static] |
const int total_zeros_vlc_tables_size = 512 [static] |
1.5.8