| 844d9012 |
/*
* Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
* Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/** |
| ba87f080 |
* @file |
| 844d9012 |
* Chinese AVS video (AVS1-P2, JiZhun profile) decoder
* @author Stefan Gehrer <stefan.gehrer@gmx.de>
*/
|
| 5a9fa845 |
#include "libavutil/avassert.h" |
| 844d9012 |
#include "avcodec.h" |
| 9106a698 |
#include "get_bits.h" |
| 844d9012 |
#include "golomb.h"
#include "cavs.h" |
| 594d4d5d |
#include "internal.h" |
| 7d848264 |
#include "mpeg12data.h"
#include "mpegvideo.h" |
| 844d9012 |
static const uint8_t mv_scan[4] = { |
| 185c2ef8 |
MV_FWD_X0, MV_FWD_X1,
MV_FWD_X2, MV_FWD_X3 |
| 844d9012 |
};
static const uint8_t cbp_tab[64][2] = { |
| 185c2ef8 |
{ 63, 0 }, { 15, 15 }, { 31, 63 }, { 47, 31 }, { 0, 16 }, { 14, 32 }, { 13, 47 }, { 11, 13 },
{ 7, 14 }, { 5, 11 }, { 10, 12 }, { 8, 5 }, { 12, 10 }, { 61, 7 }, { 4, 48 }, { 55, 3 },
{ 1, 2 }, { 2, 8 }, { 59, 4 }, { 3, 1 }, { 62, 61 }, { 9, 55 }, { 6, 59 }, { 29, 62 },
{ 45, 29 }, { 51, 27 }, { 23, 23 }, { 39, 19 }, { 27, 30 }, { 46, 28 }, { 53, 9 }, { 30, 6 },
{ 43, 60 }, { 37, 21 }, { 60, 44 }, { 16, 26 }, { 21, 51 }, { 28, 35 }, { 19, 18 }, { 35, 20 },
{ 42, 24 }, { 26, 53 }, { 44, 17 }, { 32, 37 }, { 58, 39 }, { 24, 45 }, { 20, 58 }, { 17, 43 },
{ 18, 42 }, { 48, 46 }, { 22, 36 }, { 33, 33 }, { 25, 34 }, { 49, 40 }, { 40, 52 }, { 36, 49 },
{ 34, 50 }, { 50, 56 }, { 52, 25 }, { 54, 22 }, { 41, 54 }, { 56, 57 }, { 38, 41 }, { 57, 38 } |
| 844d9012 |
};
|
| ef07ac1e |
static const uint8_t scan3x3[4] = { 4, 5, 7, 8 };
static const uint8_t cavs_chroma_qp[64] = { |
| 185c2ef8 |
0, 1, 2, 3, 4, 5, 6, 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, 42, 43, 43, 44, 44,
45, 45, 46, 46, 47, 47, 48, 48, 48, 49, 49, 49, 50, 50, 50, 51 |
| ef07ac1e |
};
static const uint8_t dequant_shift[64] = { |
| 185c2ef8 |
14, 14, 14, 14, 14, 14, 14, 14,
13, 13, 13, 13, 13, 13, 13, 13,
13, 12, 12, 12, 12, 12, 12, 12,
11, 11, 11, 11, 11, 11, 11, 11,
11, 10, 10, 10, 10, 10, 10, 10,
10, 9, 9, 9, 9, 9, 9, 9,
9, 8, 8, 8, 8, 8, 8, 8,
7, 7, 7, 7, 7, 7, 7, 7 |
| ef07ac1e |
};
static const uint16_t dequant_mul[64] = { |
| 185c2ef8 |
32768, 36061, 38968, 42495, 46341, 50535, 55437, 60424,
32932, 35734, 38968, 42495, 46177, 50535, 55109, 59933,
65535, 35734, 38968, 42577, 46341, 50617, 55027, 60097,
32809, 35734, 38968, 42454, 46382, 50576, 55109, 60056,
65535, 35734, 38968, 42495, 46320, 50515, 55109, 60076,
65535, 35744, 38968, 42495, 46341, 50535, 55099, 60087,
65535, 35734, 38973, 42500, 46341, 50535, 55109, 60097,
32771, 35734, 38965, 42497, 46341, 50535, 55109, 60099 |
| ef07ac1e |
};
|
| 185c2ef8 |
#define EOB 0, 0, 0 |
| ef07ac1e |
static const struct dec_2dvlc intra_dec[7] = { |
| 185c2ef8 |
{
{ //level / run / table_inc
{ 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 },
{ 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 },
{ 1, 7, 1 }, { -1, 7, 1 }, { 1, 8, 1 }, { -1, 8, 1 }, { 1, 9, 1 }, { -1, 9, 1 },
{ 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, { 2, 1, 2 }, { -2, 1, 2 },
{ 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 },
{ 1, 15, 1 }, { -1, 15, 1 }, { 2, 2, 2 }, { -2, 2, 2 }, { 1, 16, 1 }, { -1, 16, 1 },
{ 1, 17, 1 }, { -1, 17, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 18, 1 }, { -1, 18, 1 },
{ 1, 19, 1 }, { -1, 19, 1 }, { 2, 3, 2 }, { -2, 3, 2 }, { 1, 20, 1 }, { -1, 20, 1 },
{ 1, 21, 1 }, { -1, 21, 1 }, { 2, 4, 2 }, { -2, 4, 2 }, { 1, 22, 1 }, { -1, 22, 1 },
{ 2, 5, 2 }, { -2, 5, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { EOB }
},
//level_add
{ 0, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1 },
2, //golomb_order
0, //inc_limit
23, //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 }, { -2, 1, 1 },
{ 1, 3, 0 }, { -1, 3, 0 }, { EOB }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 },
{ -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 2, 2, 1 },
{ -2, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 1, 9, 0 },
{ -1, 9, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 4, 1, 2 }, { -4, 1, 2 }, { 1, 10, 0 },
{ -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 2, 4, 1 }, { -2, 4, 1 }, { 3, 2, 2 },
{ -3, 2, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 2, 5, 1 }, { -2, 5, 1 }, { 5, 1, 3 },
{ -5, 1, 3 }, { 1, 13, 0 }, { -1, 13, 0 }, { 2, 6, 1 }, { -2, 6, 1 }, { 1, 14, 0 },
{ -1, 14, 0 }, { 2, 7, 1 }, { -2, 7, 1 }, { 2, 8, 1 }, { -2, 8, 1 }, { 3, 3, 2 },
{ -3, 3, 2 }, { 6, 1, 3 }, { -6, 1, 3 }, { 1, 15, 0 }, { -1, 15, 0 }
},
//level_add
{ 0, 7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
1, //inc_limit
15, //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 },
{ 3, 1, 1 }, { -3, 1, 1 }, { EOB }, { 1, 3, 0 }, { -1, 3, 0 }, { 2, 2, 0 },
{ -2, 2, 0 }, { 4, 1, 1 }, { -4, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 },
{ -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 },
{ -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 2, 4, 0 },
{ -2, 4, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 7, 1, 2 },
{ -7, 1, 2 }, { 3, 3, 1 }, { -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 },
{ -1, 8, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 3 }, { -8, 1, 3 }, { 1, 9, 0 },
{ -1, 9, 0 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 }, { 2, 7, 0 },
{ -2, 7, 0 }, { 9, 1, 3 }, { -9, 1, 3 }, { 1, 10, 0 }, { -1, 10, 0 }
},
//level_add
{ 0, 10, 6, 4, 4, 3, 3, 3, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
2, //inc_limit
10, //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 },
{ 1, 2, 0 }, { -1, 2, 0 }, { EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 1 },
{ -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 6, 1, 1 },
{ -6, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 1, 4, 0 },
{ -1, 4, 0 }, { 8, 1, 2 }, { -8, 1, 2 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 2, 0 },
{ -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 9, 1, 2 }, { -9, 1, 2 }, { 5, 2, 1 },
{ -5, 2, 1 }, { 2, 4, 0 }, { -2, 4, 0 }, { 10, 1, 2 }, {-10, 1, 2 }, { 3, 3, 0 },
{ -3, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 11, 1, 3 }, {-11, 1, 3 }, { 6, 2, 1 },
{ -6, 2, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 2, 5, 0 }, { -2, 5, 0 }, { 3, 4, 0 },
{ -3, 4, 0 }, { 12, 1, 3 }, {-12, 1, 3 }, { 4, 3, 0 }, { -4, 3, 0 }
},
//level_add
{ 0, 13, 7, 5, 4, 3, 2, 2, -1, -1, -1 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
4, //inc_limit
7, //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 }, { -3, 1, 0 },
{ EOB }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 },
{ -6, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 1 },
{ -8, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 9, 1, 1 }, { -9, 1, 1 }, { 10, 1, 1 },
{-10, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 11, 1, 2 },
{-11, 1, 2 }, { 4, 2, 0 }, { -4, 2, 0 }, { 12, 1, 2 }, {-12, 1, 2 }, { 13, 1, 2 },
{-13, 1, 2 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 },
{ -2, 3, 0 }, { 14, 1, 2 }, {-14, 1, 2 }, { 6, 2, 0 }, { -6, 2, 0 }, { 15, 1, 2 },
{-15, 1, 2 }, { 16, 1, 2 }, {-16, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 1, 5, 0 },
{ -1, 5, 0 }, { 7, 2, 0 }, { -7, 2, 0 }, { 17, 1, 2 }, {-17, 1, 2 }
},
//level_add
{ 0,18, 8, 4, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
7, //inc_limit
5, //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 },
{ -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 },
{ -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 },
{ -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 11, 1, 1 },
{-11, 1, 1 }, { 12, 1, 1 }, {-12, 1, 1 }, { 13, 1, 1 }, {-13, 1, 1 }, { 2, 2, 0 },
{ -2, 2, 0 }, { 14, 1, 1 }, {-14, 1, 1 }, { 15, 1, 1 }, {-15, 1, 1 }, { 3, 2, 0 },
{ -3, 2, 0 }, { 16, 1, 1 }, {-16, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 17, 1, 1 },
{-17, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 18, 1, 1 }, {-18, 1, 1 }, { 5, 2, 0 },
{ -5, 2, 0 }, { 19, 1, 1 }, {-19, 1, 1 }, { 20, 1, 1 }, {-20, 1, 1 }, { 6, 2, 0 },
{ -6, 2, 0 }, { 21, 1, 1 }, {-21, 1, 1 }, { 2, 3, 0 }, { -2, 3, 0 }
},
//level_add
{ 0, 22, 7, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
10, //inc_limit
3, //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 },
{ -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 },
{ -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 9, 1, 0 },
{ -9, 1, 0 }, { 10, 1, 0 }, {-10, 1, 0 }, { 11, 1, 0 }, {-11, 1, 0 }, { 12, 1, 0 },
{-12, 1, 0 }, { 13, 1, 0 }, {-13, 1, 0 }, { 14, 1, 0 }, {-14, 1, 0 }, { 15, 1, 0 },
{-15, 1, 0 }, { 16, 1, 0 }, {-16, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 17, 1, 0 },
{-17, 1, 0 }, { 18, 1, 0 }, {-18, 1, 0 }, { 19, 1, 0 }, {-19, 1, 0 }, { 20, 1, 0 },
{-20, 1, 0 }, { 21, 1, 0 }, {-21, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 22, 1, 0 },
{-22, 1, 0 }, { 23, 1, 0 }, {-23, 1, 0 }, { 24, 1, 0 }, {-24, 1, 0 }, { 25, 1, 0 },
{-25, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 26, 1, 0 }, {-26, 1, 0 }
},
//level_add
{ 0, 27, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
INT_MAX, //inc_limit
2, //max_run
} |
| ef07ac1e |
};
static const struct dec_2dvlc inter_dec[7] = { |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 },
{ 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 },
{ 1, 7, 1 }, { -1, 7, 1 }, { 1, 8, 1 }, { -1, 8, 1 }, { 1, 9, 1 }, { -1, 9, 1 },
{ 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 }, { 1, 12, 1 }, { -1, 12, 1 },
{ 1, 13, 1 }, { -1, 13, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, { 1, 14, 1 }, { -1, 14, 1 },
{ 1, 15, 1 }, { -1, 15, 1 }, { 1, 16, 1 }, { -1, 16, 1 }, { 1, 17, 1 }, { -1, 17, 1 },
{ 1, 18, 1 }, { -1, 18, 1 }, { 1, 19, 1 }, { -1, 19, 1 }, { 3, 1, 3 }, { -3, 1, 3 },
{ 1, 20, 1 }, { -1, 20, 1 }, { 1, 21, 1 }, { -1, 21, 1 }, { 2, 2, 2 }, { -2, 2, 2 },
{ 1, 22, 1 }, { -1, 22, 1 }, { 1, 23, 1 }, { -1, 23, 1 }, { 1, 24, 1 }, { -1, 24, 1 },
{ 1, 25, 1 }, { -1, 25, 1 }, { 1, 26, 1 }, { -1, 26, 1 }, { EOB }
},
//level_add
{ 0, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
3, //golomb_order
0, //inc_limit
26 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 1, 2, 0 }, { -1, 2, 0 }, { 1, 3, 0 },
{ -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 1, 6, 0 },
{ -1, 6, 0 }, { 2, 1, 1 }, { -2, 1, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 1, 8, 0 },
{ -1, 8, 0 }, { 1, 9, 0 }, { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 2, 2, 1 },
{ -2, 2, 1 }, { 1, 11, 0 }, { -1, 11, 0 }, { 1, 12, 0 }, { -1, 12, 0 }, { 3, 1, 2 },
{ -3, 1, 2 }, { 1, 13, 0 }, { -1, 13, 0 }, { 1, 14, 0 }, { -1, 14, 0 }, { 2, 3, 1 },
{ -2, 3, 1 }, { 1, 15, 0 }, { -1, 15, 0 }, { 2, 4, 1 }, { -2, 4, 1 }, { 1, 16, 0 },
{ -1, 16, 0 }, { 2, 5, 1 }, { -2, 5, 1 }, { 1, 17, 0 }, { -1, 17, 0 }, { 4, 1, 3 },
{ -4, 1, 3 }, { 2, 6, 1 }, { -2, 6, 1 }, { 1, 18, 0 }, { -1, 18, 0 }, { 1, 19, 0 },
{ -1, 19, 0 }, { 2, 7, 1 }, { -2, 7, 1 }, { 3, 2, 2 }, { -3, 2, 2 }
},
//level_add
{ 0, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
1, //inc_limit
19 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 0 },
{ -2, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 3, 1, 1 },
{ -3, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 1, 6, 0 },
{ -1, 6, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 1, 2 },
{ -4, 1, 2 }, { 1, 8, 0 }, { -1, 8, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 4, 0 },
{ -2, 4, 0 }, { 1, 9, 0 }, { -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 5, 1, 2 },
{ -5, 1, 2 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 2, 6, 0 },
{ -2, 6, 0 }, { 1, 12, 0 }, { -1, 12, 0 }, { 3, 3, 1 }, { -3, 3, 1 }, { 6, 1, 2 },
{ -6, 1, 2 }, { 4, 2, 2 }, { -4, 2, 2 }, { 1, 13, 0 }, { -1, 13, 0 }, { 2, 7, 0 },
{ -2, 7, 0 }, { 3, 4, 1 }, { -3, 4, 1 }, { 1, 14, 0 }, { -1, 14, 0 }
},
//level_add
{ 0, 7, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
2, //inc_limit
14 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 },
{ -1, 2, 0 }, { 3, 1, 0 }, { -3, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 2, 2, 0 },
{ -2, 2, 0 }, { 4, 1, 1 }, { -4, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 1 },
{ -5, 1, 1 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 2, 3, 0 },
{ -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 1 }, { -6, 1, 1 }, { 2, 4, 0 },
{ -2, 4, 0 }, { 1, 7, 0 }, { -1, 7, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 7, 1, 2 },
{ -7, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 2, 5, 0 },
{ -2, 5, 0 }, { 8, 1, 2 }, { -8, 1, 2 }, { 1, 9, 0 }, { -1, 9, 0 }, { 3, 4, 0 },
{ -3, 4, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 5, 2, 1 }, { -5, 2, 1 }, { 1, 10, 0 },
{ -1, 10, 0 }, { 9, 1, 2 }, { -9, 1, 2 }, { 4, 3, 1 }, { -4, 3, 1 }
},
//level_add
{ 0,10, 6, 5, 4, 3, 3, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
3, //inc_limit
10 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 },
{ -3, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 },
{ -5, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 6, 1, 0 },
{ -6, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 1, 4, 0 },
{ -1, 4, 0 }, { 8, 1, 1 }, { -8, 1, 1 }, { 2, 3, 0 }, { -2, 3, 0 }, { 4, 2, 0 },
{ -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 9, 1, 1 }, { -9, 1, 1 }, { 5, 2, 0 },
{ -5, 2, 0 }, { 2, 4, 0 }, { -2, 4, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 10, 1, 2 },
{-10, 1, 2 }, { 3, 3, 0 }, { -3, 3, 0 }, { 11, 1, 2 }, {-11, 1, 2 }, { 1, 7, 0 },
{ -1, 7, 0 }, { 6, 2, 0 }, { -6, 2, 0 }, { 3, 4, 0 }, { -3, 4, 0 }, { 2, 5, 0 },
{ -2, 5, 0 }, { 12, 1, 2 }, {-12, 1, 2 }, { 4, 3, 0 }, { -4, 3, 0 }
},
//level_add
{ 0, 13, 7, 5, 4, 3, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
6, //inc_limit
7 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 },
{ -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 1, 2, 0 },
{ -1, 2, 0 }, { 6, 1, 0 }, { -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 },
{ -8, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 1, 3, 0 },
{ -1, 3, 0 }, { 10, 1, 1 }, { -10, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 11, 1, 1 },
{ -11, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 12, 1, 1 }, { -12, 1, 1 }, { 1, 4, 0 },
{ -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 13, 1, 1 }, { -13, 1, 1 }, { 5, 2, 0 },
{ -5, 2, 0 }, { 14, 1, 1 }, { -14, 1, 1 }, { 6, 2, 0 }, { -6, 2, 0 }, { 1, 5, 0 },
{ -1, 5, 0 }, { 15, 1, 1 }, { -15, 1, 1 }, { 3, 3, 0 }, { -3, 3, 0 }, { 16, 1, 1 },
{ -16, 1, 1 }, { 2, 4, 0 }, { -2, 4, 0 }, { 7, 2, 0 }, { -7, 2, 0 }
},
//level_add
{ 0, 17, 8, 4, 3, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
9, //inc_limit
5 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 },
{ -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 },
{ -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 8, 1, 0 },
{ -8, 1, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 10, 1, 0 }, { -10, 1, 0 }, { 11, 1, 0 },
{ -11, 1, 0 }, { 12, 1, 0 }, { -12, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 13, 1, 0 },
{ -13, 1, 0 }, { 1, 3, 0 }, { -1, 3, 0 }, { 14, 1, 0 }, { -14, 1, 0 }, { 15, 1, 0 },
{ -15, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 16, 1, 0 }, { -16, 1, 0 }, { 17, 1, 0 },
{ -17, 1, 0 }, { 18, 1, 0 }, { -18, 1, 0 }, { 4, 2, 0 }, { -4, 2, 0 }, { 19, 1, 0 },
{ -19, 1, 0 }, { 20, 1, 0 }, { -20, 1, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 1, 4, 0 },
{ -1, 4, 0 }, { 5, 2, 0 }, { -5, 2, 0 }, { 21, 1, 0 }, { -21, 1, 0 }
},
//level_add
{ 0, 22, 6, 3, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
2, //golomb_order
INT_MAX, //inc_limit
4 //max_run
} |
| ef07ac1e |
};
static const struct dec_2dvlc chroma_dec[5] = { |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 1 }, { -1, 1, 1 }, { 1, 2, 1 }, { -1, 2, 1 }, { 1, 3, 1 }, { -1, 3, 1 },
{ 1, 4, 1 }, { -1, 4, 1 }, { 1, 5, 1 }, { -1, 5, 1 }, { 1, 6, 1 }, { -1, 6, 1 },
{ 1, 7, 1 }, { -1, 7, 1 }, { 2, 1, 2 }, { -2, 1, 2 }, { 1, 8, 1 }, { -1, 8, 1 },
{ 1, 9, 1 }, { -1, 9, 1 }, { 1, 10, 1 }, { -1, 10, 1 }, { 1, 11, 1 }, { -1, 11, 1 },
{ 1, 12, 1 }, { -1, 12, 1 }, { 1, 13, 1 }, { -1, 13, 1 }, { 1, 14, 1 }, { -1, 14, 1 },
{ 1, 15, 1 }, { -1, 15, 1 }, { 3, 1, 3 }, { -3, 1, 3 }, { 1, 16, 1 }, { -1, 16, 1 },
{ 1, 17, 1 }, { -1, 17, 1 }, { 1, 18, 1 }, { -1, 18, 1 }, { 1, 19, 1 }, { -1, 19, 1 },
{ 1, 20, 1 }, { -1, 20, 1 }, { 1, 21, 1 }, { -1, 21, 1 }, { 1, 22, 1 }, { -1, 22, 1 },
{ 2, 2, 2 }, { -2, 2, 2 }, { 1, 23, 1 }, { -1, 23, 1 }, { 1, 24, 1 }, { -1, 24, 1 },
{ 1, 25, 1 }, { -1, 25, 1 }, { 4, 1, 3 }, { -4, 1, 3 }, { EOB }
},
//level_add
{ 0, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1 },
2, //golomb_order
0, //inc_limit
25 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 2, 1, 1 },
{ -2, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 1, 5, 0 },
{ -1, 5, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 3, 1, 2 }, { -3, 1, 2 }, { 1, 7, 0 },
{ -1, 7, 0 }, { 1, 8, 0 }, { -1, 8, 0 }, { 2, 2, 1 }, { -2, 2, 1 }, { 1, 9, 0 },
{ -1, 9, 0 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 4, 1, 2 },
{ -4, 1, 2 }, { 1, 12, 0 }, { -1, 12, 0 }, { 1, 13, 0 }, { -1, 13, 0 }, { 1, 14, 0 },
{ -1, 14, 0 }, { 2, 3, 1 }, { -2, 3, 1 }, { 1, 15, 0 }, { -1, 15, 0 }, { 2, 4, 1 },
{ -2, 4, 1 }, { 5, 1, 3 }, { -5, 1, 3 }, { 3, 2, 2 }, { -3, 2, 2 }, { 1, 16, 0 },
{ -1, 16, 0 }, { 1, 17, 0 }, { -1, 17, 0 }, { 1, 18, 0 }, { -1, 18, 0 }, { 2, 5, 1 },
{ -2, 5, 1 }, { 1, 19, 0 }, { -1, 19, 0 }, { 1, 20, 0 }, { -1, 20, 0 }
},
//level_add
{ 0, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1 },
0, //golomb_order
1, //inc_limit
20 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ 1, 1, 0 }, { -1, 1, 0 }, { EOB }, { 2, 1, 0 }, { -2, 1, 0 }, { 1, 2, 0 },
{ -1, 2, 0 }, { 3, 1, 1 }, { -3, 1, 1 }, { 1, 3, 0 }, { -1, 3, 0 }, { 4, 1, 1 },
{ -4, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 1, 4, 0 }, { -1, 4, 0 }, { 5, 1, 2 },
{ -5, 1, 2 }, { 1, 5, 0 }, { -1, 5, 0 }, { 3, 2, 1 }, { -3, 2, 1 }, { 2, 3, 0 },
{ -2, 3, 0 }, { 1, 6, 0 }, { -1, 6, 0 }, { 6, 1, 2 }, { -6, 1, 2 }, { 1, 7, 0 },
{ -1, 7, 0 }, { 2, 4, 0 }, { -2, 4, 0 }, { 7, 1, 2 }, { -7, 1, 2 }, { 1, 8, 0 },
{ -1, 8, 0 }, { 4, 2, 1 }, { -4, 2, 1 }, { 1, 9, 0 }, { -1, 9, 0 }, { 3, 3, 1 },
{ -3, 3, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 2, 6, 0 }, { -2, 6, 0 }, { 8, 1, 2 },
{ -8, 1, 2 }, { 1, 10, 0 }, { -1, 10, 0 }, { 1, 11, 0 }, { -1, 11, 0 }, { 9, 1, 2 },
{ -9, 1, 2 }, { 5, 2, 2 }, { -5, 2, 2 }, { 3, 4, 1 }, { -3, 4, 1 },
},
//level_add
{ 0,10, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
1, //golomb_order
2, //inc_limit
11 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 },
{ -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 1, 2, 0 }, { -1, 2, 0 }, { 5, 1, 1 },
{ -5, 1, 1 }, { 2, 2, 0 }, { -2, 2, 0 }, { 6, 1, 1 }, { -6, 1, 1 }, { 1, 3, 0 },
{ -1, 3, 0 }, { 7, 1, 1 }, { -7, 1, 1 }, { 3, 2, 0 }, { -3, 2, 0 }, { 8, 1, 1 },
{ -8, 1, 1 }, { 1, 4, 0 }, { -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 9, 1, 1 },
{ -9, 1, 1 }, { 4, 2, 0 }, { -4, 2, 0 }, { 1, 5, 0 }, { -1, 5, 0 }, { 10, 1, 1 },
{-10, 1, 1 }, { 3, 3, 0 }, { -3, 3, 0 }, { 5, 2, 1 }, { -5, 2, 1 }, { 2, 4, 0 },
{ -2, 4, 0 }, { 11, 1, 1 }, {-11, 1, 1 }, { 1, 6, 0 }, { -1, 6, 0 }, { 12, 1, 1 },
{-12, 1, 1 }, { 1, 7, 0 }, { -1, 7, 0 }, { 6, 2, 1 }, { -6, 2, 1 }, { 13, 1, 1 },
{-13, 1, 1 }, { 2, 5, 0 }, { -2, 5, 0 }, { 1, 8, 0 }, { -1, 8, 0 },
},
//level_add
{ 0, 14, 7, 4, 3, 3, 2, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
1, //golomb_order
4, //inc_limit
8 //max_run |
| ef07ac1e |
}, |
| 185c2ef8 |
{
{ //level / run
{ EOB }, { 1, 1, 0 }, { -1, 1, 0 }, { 2, 1, 0 }, { -2, 1, 0 }, { 3, 1, 0 },
{ -3, 1, 0 }, { 4, 1, 0 }, { -4, 1, 0 }, { 5, 1, 0 }, { -5, 1, 0 }, { 6, 1, 0 },
{ -6, 1, 0 }, { 7, 1, 0 }, { -7, 1, 0 }, { 8, 1, 0 }, { -8, 1, 0 }, { 1, 2, 0 },
{ -1, 2, 0 }, { 9, 1, 0 }, { -9, 1, 0 }, { 10, 1, 0 }, { -10, 1, 0 }, { 11, 1, 0 },
{ -11, 1, 0 }, { 2, 2, 0 }, { -2, 2, 0 }, { 12, 1, 0 }, { -12, 1, 0 }, { 13, 1, 0 },
{ -13, 1, 0 }, { 3, 2, 0 }, { -3, 2, 0 }, { 14, 1, 0 }, { -14, 1, 0 }, { 1, 3, 0 },
{ -1, 3, 0 }, { 15, 1, 0 }, { -15, 1, 0 }, { 4, 2, 0 }, { -4, 2, 0 }, { 16, 1, 0 },
{ -16, 1, 0 }, { 17, 1, 0 }, { -17, 1, 0 }, { 5, 2, 0 }, { -5, 2, 0 }, { 1, 4, 0 },
{ -1, 4, 0 }, { 2, 3, 0 }, { -2, 3, 0 }, { 18, 1, 0 }, { -18, 1, 0 }, { 6, 2, 0 },
{ -6, 2, 0 }, { 19, 1, 0 }, { -19, 1, 0 }, { 1, 5, 0 }, { -1, 5, 0 },
},
//level_add
{ 0, 20, 7, 3, 2, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
0, //golomb_order
INT_MAX, //inc_limit
5, //max_run
} |
| ef07ac1e |
};
#undef EOB
|
| 844d9012 |
/*****************************************************************************
*
* motion vector prediction
*
****************************************************************************/
|
| 185c2ef8 |
static inline void store_mvs(AVSContext *h)
{
h->col_mv[h->mbidx * 4 + 0] = h->mv[MV_FWD_X0];
h->col_mv[h->mbidx * 4 + 1] = h->mv[MV_FWD_X1];
h->col_mv[h->mbidx * 4 + 2] = h->mv[MV_FWD_X2];
h->col_mv[h->mbidx * 4 + 3] = h->mv[MV_FWD_X3]; |
| 844d9012 |
}
|
| e685e8ea |
static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw, |
| 185c2ef8 |
cavs_vector *col_mv)
{ |
| e685e8ea |
cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS; |
| 844d9012 |
int den = h->direct_den[col_mv->ref];
int m = col_mv->x >> 31;
pmv_fw->dist = h->dist[1];
pmv_bw->dist = h->dist[0];
pmv_fw->ref = 1;
pmv_bw->ref = 0;
/* scale the co-located motion vector according to its temporal span */ |
| 185c2ef8 |
pmv_fw->x = (((den + (den * col_mv->x * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m;
pmv_bw->x = m - (((den + (den * col_mv->x * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); |
| 844d9012 |
m = col_mv->y >> 31; |
| 185c2ef8 |
pmv_fw->y = (((den + (den * col_mv->y * pmv_fw->dist ^ m) - m - 1) >> 14) ^ m) - m;
pmv_bw->y = m - (((den + (den * col_mv->y * pmv_bw->dist ^ m) - m - 1) >> 14) ^ m); |
| 844d9012 |
}
|
| 185c2ef8 |
static inline void mv_pred_sym(AVSContext *h, cavs_vector *src,
enum cavs_block size)
{ |
| e685e8ea |
cavs_vector *dst = src + MV_BWD_OFFS; |
| 844d9012 |
/* backward mv is the scaled and negated forward mv */
dst->x = -((src->x * h->sym_factor + 256) >> 9);
dst->y = -((src->y * h->sym_factor + 256) >> 9);
dst->ref = 0;
dst->dist = h->dist[0];
set_mvs(dst, size);
}
/*****************************************************************************
*
* residual data decoding
*
****************************************************************************/
/** kth-order exponential golomb code */ |
| 185c2ef8 |
static inline int get_ue_code(GetBitContext *gb, int order)
{ |
| cf48b006 |
unsigned ret = get_ue_golomb(gb);
if (ret >= ((1U<<31)>>order)) {
av_log(NULL, AV_LOG_ERROR, "get_ue_code: value too larger\n");
return AVERROR_INVALIDDATA;
} |
| 185c2ef8 |
if (order) { |
| cf48b006 |
return (ret<<order) + get_bits(gb, order); |
| 844d9012 |
} |
| cf48b006 |
return ret; |
| 844d9012 |
}
|
| 88bd7fdc |
static inline int dequant(AVSContext *h, int16_t *level_buf, uint8_t *run_buf,
int16_t *dst, int mul, int shift, int coeff_num) |
| 185c2ef8 |
{ |
| a6d9f9e6 |
int round = 1 << (shift - 1);
int pos = -1;
const uint8_t *scantab = h->scantable.permutated;
/* inverse scan and dequantization */ |
| 185c2ef8 |
while (--coeff_num >= 0) { |
| a6d9f9e6 |
pos += run_buf[coeff_num]; |
| 185c2ef8 |
if (pos > 63) { |
| 7d848264 |
av_log(h->avctx, AV_LOG_ERROR, |
| 185c2ef8 |
"position out of block bounds at pic %d MB(%d,%d)\n", |
| 7d848264 |
h->cur.poc, h->mbx, h->mby); |
| a6d9f9e6 |
return -1;
} |
| 185c2ef8 |
dst[scantab[pos]] = (level_buf[coeff_num] * mul + round) >> shift; |
| a6d9f9e6 |
}
return 0;
}
|
| 844d9012 |
/**
* decode coefficients from one 8x8 block, dequantize, inverse transform
* and add them to sample block
* @param r pointer to 2D VLC table
* @param esc_golomb_order escape codes are k-golomb with this order k
* @param qp quantizer
* @param dst location of sample block
* @param stride line stride in frame buffer
*/
static int decode_residual_block(AVSContext *h, GetBitContext *gb, |
| 9506090d |
const struct dec_2dvlc *r, int esc_golomb_order, |
| 185c2ef8 |
int qp, uint8_t *dst, int stride)
{ |
| 6481a360 |
int i, esc_code, level, mask;
unsigned int level_code, run; |
| 88bd7fdc |
int16_t level_buf[65]; |
| 6138ed77 |
uint8_t run_buf[65]; |
| 88bd7fdc |
int16_t *block = h->block; |
| 844d9012 |
|
| 6ddda83c |
for (i = 0; i < 65; i++) { |
| 185c2ef8 |
level_code = get_ue_code(gb, r->golomb_order);
if (level_code >= ESCAPE_CODE) {
run = ((level_code - ESCAPE_CODE) >> 1) + 1; |
| 961a1a81 |
if(run > 64)
return -1; |
| 185c2ef8 |
esc_code = get_ue_code(gb, esc_golomb_order);
level = esc_code + (run > r->max_run ? 1 : r->level_add[run]);
while (level > r->inc_limit) |
| 844d9012 |
r++; |
| 185c2ef8 |
mask = -(level_code & 1);
level = (level ^ mask) - mask; |
| 844d9012 |
} else {
level = r->rltab[level_code][0]; |
| 185c2ef8 |
if (!level) //end of block signal |
| 844d9012 |
break; |
| 185c2ef8 |
run = r->rltab[level_code][1];
r += r->rltab[level_code][2]; |
| 844d9012 |
}
level_buf[i] = level; |
| 185c2ef8 |
run_buf[i] = run; |
| 844d9012 |
} |
| ef07ac1e |
if (dequant(h, level_buf, run_buf, block, dequant_mul[qp],
dequant_shift[qp], i)) |
| 844d9012 |
return -1; |
| 185c2ef8 |
h->cdsp.cavs_idct8_add(dst, block, stride); |
| 7d848264 |
h->dsp.clear_block(block); |
| 844d9012 |
return 0;
}
|
| 185c2ef8 |
static inline void decode_residual_chroma(AVSContext *h)
{
if (h->cbp & (1 << 4)) |
| 7d848264 |
decode_residual_block(h, &h->gb, chroma_dec, 0, |
| ef07ac1e |
cavs_chroma_qp[h->qp], h->cu, h->c_stride); |
| 185c2ef8 |
if (h->cbp & (1 << 5)) |
| 7d848264 |
decode_residual_block(h, &h->gb, chroma_dec, 0, |
| ef07ac1e |
cavs_chroma_qp[h->qp], h->cv, h->c_stride); |
| 844d9012 |
}
|
| 185c2ef8 |
static inline int decode_residual_inter(AVSContext *h)
{ |
| 844d9012 |
int block;
/* get coded block pattern */ |
| 7d848264 |
int cbp = get_ue_golomb(&h->gb); |
| 6ddda83c |
if (cbp > 63U) { |
| 7d848264 |
av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp\n"); |
| 844d9012 |
return -1;
}
h->cbp = cbp_tab[cbp][1];
/* get quantizer */ |
| 185c2ef8 |
if (h->cbp && !h->qp_fixed) |
| 7d848264 |
h->qp = (h->qp + get_se_golomb(&h->gb)) & 63; |
| 185c2ef8 |
for (block = 0; block < 4; block++)
if (h->cbp & (1 << block)) |
| 7d848264 |
decode_residual_block(h, &h->gb, inter_dec, 0, h->qp, |
| 844d9012 |
h->cy + h->luma_scan[block], h->l_stride);
decode_residual_chroma(h);
return 0;
}
/*****************************************************************************
*
* macroblock level
*
****************************************************************************/
|
| 185c2ef8 |
static inline void set_mv_intra(AVSContext *h)
{ |
| a6d9f9e6 |
h->mv[MV_FWD_X0] = ff_cavs_intra_mv;
set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
h->mv[MV_BWD_X0] = ff_cavs_intra_mv;
set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); |
| fb0cb11f |
if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) |
| a6d9f9e6 |
h->col_type_base[h->mbidx] = I_8X8;
}
|
| 185c2ef8 |
static int decode_mb_i(AVSContext *h, int cbp_code)
{ |
| 7d848264 |
GetBitContext *gb = &h->gb; |
| 4a71da0f |
unsigned pred_mode_uv;
int block; |
| 844d9012 |
uint8_t top[18];
uint8_t *left = NULL;
uint8_t *d;
|
| 5d2b15b8 |
ff_cavs_init_mb(h); |
| 844d9012 |
/* get intra prediction modes from stream */ |
| 185c2ef8 |
for (block = 0; block < 4; block++) {
int nA, nB, predpred; |
| ef07ac1e |
int pos = scan3x3[block]; |
| 844d9012 |
|
| 185c2ef8 |
nA = h->pred_mode_Y[pos - 1];
nB = h->pred_mode_Y[pos - 3];
predpred = FFMIN(nA, nB);
if (predpred == NOT_AVAIL) // if either is not available |
| 844d9012 |
predpred = INTRA_L_LP; |
| 185c2ef8 |
if (!get_bits1(gb)) {
int rem_mode = get_bits(gb, 2);
predpred = rem_mode + (rem_mode >= predpred); |
| 844d9012 |
}
h->pred_mode_Y[pos] = predpred;
}
pred_mode_uv = get_ue_golomb(gb); |
| 185c2ef8 |
if (pred_mode_uv > 6) { |
| 7d848264 |
av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n"); |
| 844d9012 |
return -1;
} |
| 5d2b15b8 |
ff_cavs_modify_mb_i(h, &pred_mode_uv); |
| 844d9012 |
/* get coded block pattern */ |
| fb0cb11f |
if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) |
| 844d9012 |
cbp_code = get_ue_golomb(gb); |
| 6ddda83c |
if (cbp_code > 63U) { |
| 7d848264 |
av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\n"); |
| 844d9012 |
return -1;
}
h->cbp = cbp_tab[cbp_code][0]; |
| 185c2ef8 |
if (h->cbp && !h->qp_fixed) |
| 844d9012 |
h->qp = (h->qp + get_se_golomb(gb)) & 63; //qp_delta
/* luma intra prediction interleaved with residual decode/transform/add */ |
| 185c2ef8 |
for (block = 0; block < 4; block++) { |
| 844d9012 |
d = h->cy + h->luma_scan[block]; |
| 5d2b15b8 |
ff_cavs_load_intra_pred_luma(h, top, &left, block); |
| ef07ac1e |
h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]] |
| 844d9012 |
(d, top, left, h->l_stride); |
| 185c2ef8 |
if (h->cbp & (1<<block)) |
| ef07ac1e |
decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride); |
| 844d9012 |
}
/* chroma intra prediction */ |
| 5d2b15b8 |
ff_cavs_load_intra_pred_chroma(h); |
| 185c2ef8 |
h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx * 10], |
| 844d9012 |
h->left_border_u, h->c_stride); |
| 185c2ef8 |
h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx * 10], |
| 844d9012 |
h->left_border_v, h->c_stride);
decode_residual_chroma(h); |
| 185c2ef8 |
ff_cavs_filter(h, I_8X8); |
| 844d9012 |
set_mv_intra(h);
return 0;
}
|
| 185c2ef8 |
static inline void set_intra_mode_default(AVSContext *h)
{
if (h->stream_revision > 0) { |
| a6d9f9e6 |
h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL; |
| 185c2ef8 |
h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = NOT_AVAIL; |
| a6d9f9e6 |
} else {
h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP; |
| 185c2ef8 |
h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = INTRA_L_LP; |
| a6d9f9e6 |
}
}
|
| 185c2ef8 |
static void decode_mb_p(AVSContext *h, enum cavs_mb mb_type)
{ |
| 7d848264 |
GetBitContext *gb = &h->gb; |
| 844d9012 |
int ref[4];
|
| 5d2b15b8 |
ff_cavs_init_mb(h); |
| 185c2ef8 |
switch (mb_type) { |
| 844d9012 |
case P_SKIP:
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_PSKIP, BLK_16X16, 0);
break;
case P_16X16:
ref[0] = h->ref_flag ? 0 : get_bits1(gb); |
| 185c2ef8 |
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, ref[0]); |
| 844d9012 |
break;
case P_16X8:
ref[0] = h->ref_flag ? 0 : get_bits1(gb);
ref[2] = h->ref_flag ? 0 : get_bits1(gb);
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, ref[0]);
ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, ref[2]);
break;
case P_8X16:
ref[0] = h->ref_flag ? 0 : get_bits1(gb);
ref[1] = h->ref_flag ? 0 : get_bits1(gb); |
| 185c2ef8 |
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, ref[0]);
ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, ref[1]); |
| 844d9012 |
break;
case P_8X8:
ref[0] = h->ref_flag ? 0 : get_bits1(gb);
ref[1] = h->ref_flag ? 0 : get_bits1(gb);
ref[2] = h->ref_flag ? 0 : get_bits1(gb);
ref[3] = h->ref_flag ? 0 : get_bits1(gb);
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_MEDIAN, BLK_8X8, ref[0]);
ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_MEDIAN, BLK_8X8, ref[1]);
ff_cavs_mv(h, MV_FWD_X2, MV_FWD_X1, MV_PRED_MEDIAN, BLK_8X8, ref[2]);
ff_cavs_mv(h, MV_FWD_X3, MV_FWD_X0, MV_PRED_MEDIAN, BLK_8X8, ref[3]);
}
ff_cavs_inter(h, mb_type);
set_intra_mode_default(h);
store_mvs(h); |
| 185c2ef8 |
if (mb_type != P_SKIP) |
| 844d9012 |
decode_residual_inter(h); |
| 185c2ef8 |
ff_cavs_filter(h, mb_type); |
| 6847ab43 |
h->col_type_base[h->mbidx] = mb_type; |
| 844d9012 |
}
|
| 6ddda83c |
static int decode_mb_b(AVSContext *h, enum cavs_mb mb_type) |
| 185c2ef8 |
{ |
| 844d9012 |
int block; |
| bef01ca0 |
enum cavs_sub_mb sub_type[4]; |
| 844d9012 |
int flags;
|
| 5d2b15b8 |
ff_cavs_init_mb(h); |
| 844d9012 |
/* reset all MVs */
h->mv[MV_FWD_X0] = ff_cavs_dir_mv;
set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
h->mv[MV_BWD_X0] = ff_cavs_dir_mv;
set_mvs(&h->mv[MV_BWD_X0], BLK_16X16); |
| 185c2ef8 |
switch (mb_type) { |
| 844d9012 |
case B_SKIP:
case B_DIRECT: |
| 185c2ef8 |
if (!h->col_type_base[h->mbidx]) { |
| 844d9012 |
/* intra MB at co-location, do in-plane prediction */
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_BSKIP, BLK_16X16, 1);
ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_BSKIP, BLK_16X16, 0);
} else
/* direct prediction from co-located P MB, block-wise */ |
| 185c2ef8 |
for (block = 0; block < 4; block++)
mv_pred_direct(h, &h->mv[mv_scan[block]],
&h->col_mv[h->mbidx * 4 + block]); |
| 844d9012 |
break;
case B_FWD_16X16:
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1);
break;
case B_SYM_16X16:
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1);
mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X16);
break;
case B_BWD_16X16:
ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_MEDIAN, BLK_16X16, 0);
break;
case B_8X8: |
| 185c2ef8 |
for (block = 0; block < 4; block++) |
| 7d848264 |
sub_type[block] = get_bits(&h->gb, 2); |
| 185c2ef8 |
for (block = 0; block < 4; block++) {
switch (sub_type[block]) { |
| 844d9012 |
case B_SUB_DIRECT: |
| 185c2ef8 |
if (!h->col_type_base[h->mbidx]) { |
| 844d9012 |
/* intra MB at co-location, do in-plane prediction */ |
| 185c2ef8 |
ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3,
MV_PRED_BSKIP, BLK_8X8, 1);
ff_cavs_mv(h, mv_scan[block] + MV_BWD_OFFS,
mv_scan[block] - 3 + MV_BWD_OFFS,
MV_PRED_BSKIP, BLK_8X8, 0); |
| 844d9012 |
} else |
| 185c2ef8 |
mv_pred_direct(h, &h->mv[mv_scan[block]],
&h->col_mv[h->mbidx * 4 + block]); |
| 844d9012 |
break;
case B_SUB_FWD: |
| 185c2ef8 |
ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3,
MV_PRED_MEDIAN, BLK_8X8, 1); |
| 844d9012 |
break;
case B_SUB_SYM: |
| 185c2ef8 |
ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3,
MV_PRED_MEDIAN, BLK_8X8, 1); |
| 844d9012 |
mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8);
break;
}
} |
| 185c2ef8 |
for (block = 0; block < 4; block++) {
if (sub_type[block] == B_SUB_BWD)
ff_cavs_mv(h, mv_scan[block] + MV_BWD_OFFS,
mv_scan[block] + MV_BWD_OFFS - 3,
MV_PRED_MEDIAN, BLK_8X8, 0); |
| 844d9012 |
}
break;
default: |
| 7ea5dbcb |
if (mb_type <= B_SYM_16X16) { |
| ca95d1b3 |
av_log(h->avctx, AV_LOG_ERROR, "Invalid mb_type %d in B frame\n", mb_type); |
| 7ea5dbcb |
return AVERROR_INVALIDDATA;
}
av_assert2(mb_type < B_8X8); |
| 844d9012 |
flags = ff_cavs_partition_flags[mb_type]; |
| 185c2ef8 |
if (mb_type & 1) { /* 16x8 macroblock types */
if (flags & FWD0) |
| 844d9012 |
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1); |
| 185c2ef8 |
if (flags & SYM0) |
| 844d9012 |
mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8); |
| 185c2ef8 |
if (flags & FWD1) |
| 844d9012 |
ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1); |
| 185c2ef8 |
if (flags & SYM1) |
| 844d9012 |
mv_pred_sym(h, &h->mv[MV_FWD_X2], BLK_16X8); |
| 185c2ef8 |
if (flags & BWD0) |
| 844d9012 |
ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0); |
| 185c2ef8 |
if (flags & BWD1) |
| 844d9012 |
ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0);
} else { /* 8x16 macroblock types */ |
| 185c2ef8 |
if (flags & FWD0) |
| 844d9012 |
ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1); |
| 185c2ef8 |
if (flags & SYM0) |
| 844d9012 |
mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16); |
| 185c2ef8 |
if (flags & FWD1)
ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 1);
if (flags & SYM1) |
| 844d9012 |
mv_pred_sym(h, &h->mv[MV_FWD_X1], BLK_8X16); |
| 185c2ef8 |
if (flags & BWD0) |
| 844d9012 |
ff_cavs_mv(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0); |
| 185c2ef8 |
if (flags & BWD1)
ff_cavs_mv(h, MV_BWD_X1, MV_BWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 0); |
| 844d9012 |
}
}
ff_cavs_inter(h, mb_type);
set_intra_mode_default(h); |
| 185c2ef8 |
if (mb_type != B_SKIP) |
| 844d9012 |
decode_residual_inter(h); |
| 185c2ef8 |
ff_cavs_filter(h, mb_type); |
| ba9e9605 |
return 0; |
| 844d9012 |
}
/*****************************************************************************
*
* slice level
*
****************************************************************************/
|
| 185c2ef8 |
static inline int decode_slice_header(AVSContext *h, GetBitContext *gb)
{
if (h->stc > 0xAF) |
| 7d848264 |
av_log(h->avctx, AV_LOG_ERROR, "unexpected start code 0x%02x\n", h->stc); |
| 71e78e1f |
if (h->stc >= h->mb_height)
return -1;
|
| 185c2ef8 |
h->mby = h->stc;
h->mbidx = h->mby * h->mb_width; |
| b9fce052 |
/* mark top macroblocks as unavailable */ |
| 185c2ef8 |
h->flags &= ~(B_AVAIL | C_AVAIL);
if ((h->mby == 0) && (!h->qp_fixed)) { |
| 844d9012 |
h->qp_fixed = get_bits1(gb); |
| 185c2ef8 |
h->qp = get_bits(gb, 6); |
| 844d9012 |
}
/* inter frame or second slice can have weighting params */ |
| fb0cb11f |
if ((h->cur.f->pict_type != AV_PICTURE_TYPE_I) || |
| 185c2ef8 |
(!h->pic_structure && h->mby >= h->mb_width / 2))
if (get_bits1(gb)) { //slice_weighting_flag |
| 7d848264 |
av_log(h->avctx, AV_LOG_ERROR, |
| 844d9012 |
"weighted prediction not yet supported\n");
}
return 0;
}
|
| 185c2ef8 |
static inline int check_for_slice(AVSContext *h)
{ |
| 7d848264 |
GetBitContext *gb = &h->gb; |
| 844d9012 |
int align; |
| b9fce052 |
|
| 185c2ef8 |
if (h->mbx) |
| 88db5551 |
return 0; |
| 844d9012 |
align = (-get_bits_count(gb)) & 7; |
| cd3356ff |
/* check for stuffing byte */ |
| 185c2ef8 |
if (!align && (show_bits(gb, 8) == 0x80)) |
| 470de55a |
align = 8; |
| 185c2ef8 |
if ((show_bits_long(gb, 24 + align) & 0xFFFFFF) == 0x000001) {
skip_bits_long(gb, 24 + align);
h->stc = get_bits(gb, 8); |
| 4a71da0f |
if (h->stc >= h->mb_height)
return 0; |
| 185c2ef8 |
decode_slice_header(h, gb); |
| 88db5551 |
return 1; |
| 844d9012 |
} |
| 88db5551 |
return 0; |
| 844d9012 |
}
/*****************************************************************************
*
* frame level
*
****************************************************************************/
|
| 185c2ef8 |
static int decode_pic(AVSContext *h)
{
int skip_count = -1; |
| eee8c94f |
int ret; |
| bef01ca0 |
enum cavs_mb mb_type; |
| 844d9012 |
|
| 7d848264 |
skip_bits(&h->gb, 16);//bbv_dwlay |
| 185c2ef8 |
if (h->stc == PIC_PB_START_CODE) { |
| fb0cb11f |
h->cur.f->pict_type = get_bits(&h->gb, 2) + AV_PICTURE_TYPE_I;
if (h->cur.f->pict_type > AV_PICTURE_TYPE_B) { |
| 7d848264 |
av_log(h->avctx, AV_LOG_ERROR, "illegal picture type\n"); |
| 844d9012 |
return -1;
}
/* make sure we have the reference frames we need */ |
| 7d848264 |
if (!h->DPB[0].f->data[0] || |
| fb0cb11f |
(!h->DPB[1].f->data[0] && h->cur.f->pict_type == AV_PICTURE_TYPE_B)) |
| 844d9012 |
return -1;
} else { |
| fb0cb11f |
h->cur.f->pict_type = AV_PICTURE_TYPE_I; |
| 7d848264 |
if (get_bits1(&h->gb))
skip_bits(&h->gb, 24);//time_code |
| 35122bd9 |
/* old sample clips were all progressive and no low_delay,
bump stream revision if detected otherwise */ |
| 7d848264 |
if (h->low_delay || !(show_bits(&h->gb, 9) & 1)) |
| 35122bd9 |
h->stream_revision = 1;
/* similarly test top_field_first and repeat_first_field */ |
| 7d848264 |
else if (show_bits(&h->gb, 11) & 3) |
| 35122bd9 |
h->stream_revision = 1; |
| 185c2ef8 |
if (h->stream_revision > 0) |
| 7d848264 |
skip_bits(&h->gb, 1); //marker_bit |
| 844d9012 |
}
/* release last B frame */ |
| 7d848264 |
if (h->cur.f->data[0])
h->avctx->release_buffer(h->avctx, h->cur.f); |
| 844d9012 |
|
| ca95d1b3 |
if ((ret = ff_get_buffer(h->avctx, h->cur.f)) < 0) |
| eee8c94f |
return ret; |
| 7d848264 |
if (!h->edge_emu_buffer) {
int alloc_size = FFALIGN(FFABS(h->cur.f->linesize[0]) + 32, 32);
h->edge_emu_buffer = av_mallocz(alloc_size * 2 * 24);
if (!h->edge_emu_buffer)
return AVERROR(ENOMEM);
} |
| 844d9012 |
|
| 642a655f |
if ((ret = ff_cavs_init_pic(h)) < 0)
return ret; |
| 7d848264 |
h->cur.poc = get_bits(&h->gb, 8) * 2; |
| 844d9012 |
/* get temporal distances and MV scaling factors */ |
| fb0cb11f |
if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
| 7d848264 |
h->dist[0] = (h->cur.poc - h->DPB[0].poc + 512) % 512; |
| 844d9012 |
} else { |
| 7d848264 |
h->dist[0] = (h->DPB[0].poc - h->cur.poc + 512) % 512; |
| 844d9012 |
} |
| 7d848264 |
h->dist[1] = (h->cur.poc - h->DPB[1].poc + 512) % 512; |
| 844d9012 |
h->scale_den[0] = h->dist[0] ? 512/h->dist[0] : 0;
h->scale_den[1] = h->dist[1] ? 512/h->dist[1] : 0; |
| fb0cb11f |
if (h->cur.f->pict_type == AV_PICTURE_TYPE_B) { |
| 185c2ef8 |
h->sym_factor = h->dist[0] * h->scale_den[1]; |
| 844d9012 |
} else { |
| 185c2ef8 |
h->direct_den[0] = h->dist[0] ? 16384 / h->dist[0] : 0;
h->direct_den[1] = h->dist[1] ? 16384 / h->dist[1] : 0; |
| 844d9012 |
}
|
| 7d848264 |
if (h->low_delay)
get_ue_golomb(&h->gb); //bbv_check_times
h->progressive = get_bits1(&h->gb); |
| 4ca6f4b2 |
h->pic_structure = 1; |
| 185c2ef8 |
if (!h->progressive) |
| 7d848264 |
h->pic_structure = get_bits1(&h->gb); |
| 185c2ef8 |
if (!h->pic_structure && h->stc == PIC_PB_START_CODE) |
| 7d848264 |
skip_bits1(&h->gb); //advanced_pred_mode_disable
skip_bits1(&h->gb); //top_field_first
skip_bits1(&h->gb); //repeat_first_field
h->qp_fixed = get_bits1(&h->gb);
h->qp = get_bits(&h->gb, 6); |
| fb0cb11f |
if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { |
| 185c2ef8 |
if (!h->progressive && !h->pic_structure) |
| 7d848264 |
skip_bits1(&h->gb);//what is this?
skip_bits(&h->gb, 4); //reserved bits |
| 844d9012 |
} else { |
| fb0cb11f |
if (!(h->cur.f->pict_type == AV_PICTURE_TYPE_B && h->pic_structure == 1)) |
| 7d848264 |
h->ref_flag = get_bits1(&h->gb);
skip_bits(&h->gb, 4); //reserved bits
h->skip_mode_flag = get_bits1(&h->gb); |
| 844d9012 |
} |
| 7d848264 |
h->loop_filter_disable = get_bits1(&h->gb);
if (!h->loop_filter_disable && get_bits1(&h->gb)) {
h->alpha_offset = get_se_golomb(&h->gb);
h->beta_offset = get_se_golomb(&h->gb); |
| 844d9012 |
} else {
h->alpha_offset = h->beta_offset = 0;
} |
| fb0cb11f |
if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { |
| 844d9012 |
do { |
| b9fce052 |
check_for_slice(h); |
| 844d9012 |
decode_mb_i(h, 0); |
| 185c2ef8 |
} while (ff_cavs_next_mb(h)); |
| fb0cb11f |
} else if (h->cur.f->pict_type == AV_PICTURE_TYPE_P) { |
| 844d9012 |
do { |
| 185c2ef8 |
if (check_for_slice(h)) |
| 88db5551 |
skip_count = -1; |
| 185c2ef8 |
if (h->skip_mode_flag && (skip_count < 0)) |
| 7d848264 |
skip_count = get_ue_golomb(&h->gb); |
| 185c2ef8 |
if (h->skip_mode_flag && skip_count--) {
decode_mb_p(h, P_SKIP); |
| 88db5551 |
} else { |
| 7d848264 |
mb_type = get_ue_golomb(&h->gb) + P_SKIP + h->skip_mode_flag; |
| 185c2ef8 |
if (mb_type > P_8X8) |
| 88db5551 |
decode_mb_i(h, mb_type - P_8X8 - 1);
else |
| 185c2ef8 |
decode_mb_p(h, mb_type); |
| 88db5551 |
} |
| 185c2ef8 |
} while (ff_cavs_next_mb(h)); |
| ce5e49b0 |
} else { /* AV_PICTURE_TYPE_B */ |
| 844d9012 |
do { |
| 185c2ef8 |
if (check_for_slice(h)) |
| 88db5551 |
skip_count = -1; |
| 185c2ef8 |
if (h->skip_mode_flag && (skip_count < 0)) |
| 7d848264 |
skip_count = get_ue_golomb(&h->gb); |
| 185c2ef8 |
if (h->skip_mode_flag && skip_count--) {
decode_mb_b(h, B_SKIP); |
| 88db5551 |
} else { |
| 7d848264 |
mb_type = get_ue_golomb(&h->gb) + B_SKIP + h->skip_mode_flag; |
| 185c2ef8 |
if (mb_type > B_8X8) |
| 88db5551 |
decode_mb_i(h, mb_type - B_8X8 - 1);
else |
| 185c2ef8 |
decode_mb_b(h, mb_type); |
| 88db5551 |
} |
| 185c2ef8 |
} while (ff_cavs_next_mb(h)); |
| 844d9012 |
} |
| fb0cb11f |
if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
| 7d848264 |
if (h->DPB[1].f->data[0])
h->avctx->release_buffer(h->avctx, h->DPB[1].f);
FFSWAP(AVSFrame, h->cur, h->DPB[1]);
FFSWAP(AVSFrame, h->DPB[0], h->DPB[1]); |
| 844d9012 |
}
return 0;
}
/*****************************************************************************
*
* headers and interface
*
****************************************************************************/
|
| 185c2ef8 |
static int decode_seq_header(AVSContext *h)
{ |
| 844d9012 |
int frame_rate_code; |
| 25715064 |
int width, height; |
| 844d9012 |
|
| 7d848264 |
h->profile = get_bits(&h->gb, 8);
h->level = get_bits(&h->gb, 8);
skip_bits1(&h->gb); //progressive sequence |
| c20a6963 |
|
| 7d848264 |
width = get_bits(&h->gb, 14);
height = get_bits(&h->gb, 14);
if ((h->width || h->height) && (h->width != width || h->height != height)) {
av_log_missing_feature(h->avctx, "Width/height changing in CAVS", 0); |
| c20a6963 |
return AVERROR_PATCHWELCOME; |
| 25715064 |
} |
| f9505923 |
if (width <= 0 || height <= 0) { |
| ca95d1b3 |
av_log(h->avctx, AV_LOG_ERROR, "Dimensions invalid\n"); |
| f9505923 |
return AVERROR_INVALIDDATA;
} |
| 7d848264 |
h->width = width;
h->height = height;
skip_bits(&h->gb, 2); //chroma format
skip_bits(&h->gb, 3); //sample_precision
h->aspect_ratio = get_bits(&h->gb, 4);
frame_rate_code = get_bits(&h->gb, 4);
skip_bits(&h->gb, 18); //bit_rate_lower
skip_bits1(&h->gb); //marker_bit
skip_bits(&h->gb, 12); //bit_rate_upper
h->low_delay = get_bits1(&h->gb);
h->mb_width = (h->width + 15) >> 4;
h->mb_height = (h->height + 15) >> 4;
h->avctx->time_base.den = ff_mpeg12_frame_rate_tab[frame_rate_code].num;
h->avctx->time_base.num = ff_mpeg12_frame_rate_tab[frame_rate_code].den;
h->avctx->width = h->width;
h->avctx->height = h->height; |
| 185c2ef8 |
if (!h->top_qp) |
| 844d9012 |
ff_cavs_init_top_lines(h);
return 0;
}
|
| 185c2ef8 |
static void cavs_flush(AVCodecContext * avctx)
{ |
| 844d9012 |
AVSContext *h = avctx->priv_data;
h->got_keyframe = 0;
}
|
| df9b9567 |
static int cavs_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
| 185c2ef8 |
AVPacket *avpkt)
{
AVSContext *h = avctx->priv_data; |
| 7a00bbad |
const uint8_t *buf = avpkt->data; |
| 185c2ef8 |
int buf_size = avpkt->size;
AVFrame *picture = data;
uint32_t stc = -1; |
| 844d9012 |
int input_size;
const uint8_t *buf_end;
const uint8_t *buf_ptr;
if (buf_size == 0) { |
| 7d848264 |
if (!h->low_delay && h->DPB[0].f->data[0]) { |
| df9b9567 |
*got_frame = 1; |
| 7d848264 |
*picture = *h->DPB[0].f;
if (h->cur.f->data[0])
avctx->release_buffer(avctx, h->cur.f);
FFSWAP(AVSFrame, h->cur, h->DPB[0]); |
| 844d9012 |
}
return 0;
}
buf_ptr = buf;
buf_end = buf + buf_size;
for(;;) { |
| 185c2ef8 |
buf_ptr = avpriv_mpv_find_start_code(buf_ptr, buf_end, &stc);
if ((stc & 0xFFFFFE00) || buf_ptr == buf_end) |
| 7d848264 |
return FFMAX(0, buf_ptr - buf); |
| 185c2ef8 |
input_size = (buf_end - buf_ptr) * 8;
switch (stc) { |
| 844d9012 |
case CAVS_START_CODE: |
| 7d848264 |
init_get_bits(&h->gb, buf_ptr, input_size); |
| 844d9012 |
decode_seq_header(h);
break;
case PIC_I_START_CODE: |
| 185c2ef8 |
if (!h->got_keyframe) { |
| 7d848264 |
if(h->DPB[0].f->data[0])
avctx->release_buffer(avctx, h->DPB[0].f);
if(h->DPB[1].f->data[0])
avctx->release_buffer(avctx, h->DPB[1].f); |
| 844d9012 |
h->got_keyframe = 1;
}
case PIC_PB_START_CODE: |
| df9b9567 |
*got_frame = 0; |
| 185c2ef8 |
if (!h->got_keyframe) |
| 844d9012 |
break; |
| ec0965be |
if(!h->top_qp)
break; |
| 7d848264 |
init_get_bits(&h->gb, buf_ptr, input_size); |
| 844d9012 |
h->stc = stc; |
| 185c2ef8 |
if (decode_pic(h)) |
| 844d9012 |
break; |
| df9b9567 |
*got_frame = 1; |
| fb0cb11f |
if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { |
| 7d848264 |
if (h->DPB[1].f->data[0]) {
*picture = *h->DPB[1].f; |
| 844d9012 |
} else { |
| df9b9567 |
*got_frame = 0; |
| 844d9012 |
}
} else |
| 7d848264 |
*picture = *h->cur.f; |
| 844d9012 |
break;
case EXT_START_CODE: |
| 185c2ef8 |
//mpeg_decode_extension(avctx, buf_ptr, input_size); |
| 844d9012 |
break;
case USER_START_CODE: |
| 185c2ef8 |
//mpeg_decode_user_data(avctx, buf_ptr, input_size); |
| 844d9012 |
break;
default: |
| d934de5c |
if (stc <= SLICE_MAX_START_CODE) { |
| 7d848264 |
init_get_bits(&h->gb, buf_ptr, input_size);
decode_slice_header(h, &h->gb); |
| 844d9012 |
}
break;
}
}
}
|
| e7e2df27 |
AVCodec ff_cavs_decoder = { |
| ec6402b7 |
.name = "cavs",
.type = AVMEDIA_TYPE_VIDEO, |
| 36ef5369 |
.id = AV_CODEC_ID_CAVS, |
| ec6402b7 |
.priv_data_size = sizeof(AVSContext),
.init = ff_cavs_init,
.close = ff_cavs_end,
.decode = cavs_decode_frame,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY, |
| 00c3b67b |
.flush = cavs_flush, |
| 0177b7d2 |
.long_name = NULL_IF_CONFIG_SMALL("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"), |
| 844d9012 |
}; |