diff options
Diffstat (limited to 'ffmpeg/libavcodec/cavsdec.c')
| -rw-r--r-- | ffmpeg/libavcodec/cavsdec.c | 1238 |
1 files changed, 0 insertions, 1238 deletions
diff --git a/ffmpeg/libavcodec/cavsdec.c b/ffmpeg/libavcodec/cavsdec.c deleted file mode 100644 index 44d0ec0..0000000 --- a/ffmpeg/libavcodec/cavsdec.c +++ /dev/null @@ -1,1238 +0,0 @@ -/* - * 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 - */ - -/** - * @file - * Chinese AVS video (AVS1-P2, JiZhun profile) decoder - * @author Stefan Gehrer <stefan.gehrer@gmx.de> - */ - -#include "libavutil/avassert.h" -#include "avcodec.h" -#include "get_bits.h" -#include "golomb.h" -#include "cavs.h" -#include "internal.h" -#include "mpeg12data.h" -#include "mpegvideo.h" - -static const uint8_t mv_scan[4] = { - MV_FWD_X0, MV_FWD_X1, - MV_FWD_X2, MV_FWD_X3 -}; - -static const uint8_t cbp_tab[64][2] = { - { 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 } -}; - -static const uint8_t scan3x3[4] = { 4, 5, 7, 8 }; - -static const uint8_t cavs_chroma_qp[64] = { - 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 -}; - -static const uint8_t dequant_shift[64] = { - 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 -}; - -static const uint16_t dequant_mul[64] = { - 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 -}; - -#define EOB 0, 0, 0 - -static const struct dec_2dvlc intra_dec[7] = { - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - } -}; - -static const struct dec_2dvlc inter_dec[7] = { - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - } -}; - -static const struct dec_2dvlc chroma_dec[5] = { - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - }, - { - { //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 - } -}; - -#undef EOB - -/***************************************************************************** - * - * motion vector prediction - * - ****************************************************************************/ - -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]; -} - -static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw, - cavs_vector *col_mv) -{ - cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS; - 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 */ - 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); - m = col_mv->y >> 31; - 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); -} - -static inline void mv_pred_sym(AVSContext *h, cavs_vector *src, - enum cavs_block size) -{ - cavs_vector *dst = src + MV_BWD_OFFS; - - /* 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 */ -static inline int get_ue_code(GetBitContext *gb, int order) -{ - 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; - } - if (order) { - return (ret<<order) + get_bits(gb, order); - } - return ret; -} - -static inline int dequant(AVSContext *h, int16_t *level_buf, uint8_t *run_buf, - int16_t *dst, int mul, int shift, int coeff_num) -{ - int round = 1 << (shift - 1); - int pos = -1; - const uint8_t *scantab = h->scantable.permutated; - - /* inverse scan and dequantization */ - while (--coeff_num >= 0) { - pos += run_buf[coeff_num]; - if (pos > 63) { - av_log(h->avctx, AV_LOG_ERROR, - "position out of block bounds at pic %d MB(%d,%d)\n", - h->cur.poc, h->mbx, h->mby); - return AVERROR_INVALIDDATA; - } - dst[scantab[pos]] = (level_buf[coeff_num] * mul + round) >> shift; - } - return 0; -} - -/** - * 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, - const struct dec_2dvlc *r, int esc_golomb_order, - int qp, uint8_t *dst, int stride) -{ - int i, esc_code, level, mask, ret; - unsigned int level_code, run; - int16_t level_buf[65]; - uint8_t run_buf[65]; - int16_t *block = h->block; - - for (i = 0; i < 65; i++) { - level_code = get_ue_code(gb, r->golomb_order); - if (level_code >= ESCAPE_CODE) { - run = ((level_code - ESCAPE_CODE) >> 1) + 1; - if(run > 64) { - av_log(h->avctx, AV_LOG_ERROR, "run %d is too large\n", run); - return AVERROR_INVALIDDATA; - } - 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) - r++; - mask = -(level_code & 1); - level = (level ^ mask) - mask; - } else { - level = r->rltab[level_code][0]; - if (!level) //end of block signal - break; - run = r->rltab[level_code][1]; - r += r->rltab[level_code][2]; - } - level_buf[i] = level; - run_buf[i] = run; - } - if ((ret = dequant(h, level_buf, run_buf, block, dequant_mul[qp], - dequant_shift[qp], i)) < 0) - return ret; - h->cdsp.cavs_idct8_add(dst, block, stride); - h->dsp.clear_block(block); - return 0; -} - - -static inline void decode_residual_chroma(AVSContext *h) -{ - if (h->cbp & (1 << 4)) - decode_residual_block(h, &h->gb, chroma_dec, 0, - cavs_chroma_qp[h->qp], h->cu, h->c_stride); - if (h->cbp & (1 << 5)) - decode_residual_block(h, &h->gb, chroma_dec, 0, - cavs_chroma_qp[h->qp], h->cv, h->c_stride); -} - -static inline int decode_residual_inter(AVSContext *h) -{ - int block; - - /* get coded block pattern */ - int cbp = get_ue_golomb(&h->gb); - if (cbp > 63U) { - av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp %d\n", cbp); - return AVERROR_INVALIDDATA; - } - h->cbp = cbp_tab[cbp][1]; - - /* get quantizer */ - if (h->cbp && !h->qp_fixed) - h->qp = (h->qp + get_se_golomb(&h->gb)) & 63; - for (block = 0; block < 4; block++) - if (h->cbp & (1 << block)) - decode_residual_block(h, &h->gb, inter_dec, 0, h->qp, - h->cy + h->luma_scan[block], h->l_stride); - decode_residual_chroma(h); - - return 0; -} - -/***************************************************************************** - * - * macroblock level - * - ****************************************************************************/ - -static inline void set_mv_intra(AVSContext *h) -{ - 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); - if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) - h->col_type_base[h->mbidx] = I_8X8; -} - -static int decode_mb_i(AVSContext *h, int cbp_code) -{ - GetBitContext *gb = &h->gb; - unsigned pred_mode_uv; - int block; - uint8_t top[18]; - uint8_t *left = NULL; - uint8_t *d; - - ff_cavs_init_mb(h); - - /* get intra prediction modes from stream */ - for (block = 0; block < 4; block++) { - int nA, nB, predpred; - int pos = scan3x3[block]; - - 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 - predpred = INTRA_L_LP; - if (!get_bits1(gb)) { - int rem_mode = get_bits(gb, 2); - predpred = rem_mode + (rem_mode >= predpred); - } - h->pred_mode_Y[pos] = predpred; - } - pred_mode_uv = get_ue_golomb(gb); - if (pred_mode_uv > 6) { - av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n"); - return AVERROR_INVALIDDATA; - } - ff_cavs_modify_mb_i(h, &pred_mode_uv); - - /* get coded block pattern */ - if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) - cbp_code = get_ue_golomb(gb); - if (cbp_code > 63U) { - av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\n"); - return AVERROR_INVALIDDATA; - } - h->cbp = cbp_tab[cbp_code][0]; - if (h->cbp && !h->qp_fixed) - h->qp = (h->qp + get_se_golomb(gb)) & 63; //qp_delta - - /* luma intra prediction interleaved with residual decode/transform/add */ - for (block = 0; block < 4; block++) { - d = h->cy + h->luma_scan[block]; - ff_cavs_load_intra_pred_luma(h, top, &left, block); - h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]] - (d, top, left, h->l_stride); - if (h->cbp & (1<<block)) - decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride); - } - - /* chroma intra prediction */ - ff_cavs_load_intra_pred_chroma(h); - h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx * 10], - h->left_border_u, h->c_stride); - h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx * 10], - h->left_border_v, h->c_stride); - - decode_residual_chroma(h); - ff_cavs_filter(h, I_8X8); - set_mv_intra(h); - return 0; -} - -static inline void set_intra_mode_default(AVSContext *h) -{ - if (h->stream_revision > 0) { - h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL; - h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = NOT_AVAIL; - } else { - h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP; - h->top_pred_Y[h->mbx * 2 + 0] = h->top_pred_Y[h->mbx * 2 + 1] = INTRA_L_LP; - } -} - -static void decode_mb_p(AVSContext *h, enum cavs_mb mb_type) -{ - GetBitContext *gb = &h->gb; - int ref[4]; - - ff_cavs_init_mb(h); - switch (mb_type) { - 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); - ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, ref[0]); - 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); - 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]); - 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); - if (mb_type != P_SKIP) - decode_residual_inter(h); - ff_cavs_filter(h, mb_type); - h->col_type_base[h->mbidx] = mb_type; -} - -static int decode_mb_b(AVSContext *h, enum cavs_mb mb_type) -{ - int block; - enum cavs_sub_mb sub_type[4]; - int flags; - - ff_cavs_init_mb(h); - - /* 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); - switch (mb_type) { - case B_SKIP: - case B_DIRECT: - if (!h->col_type_base[h->mbidx]) { - /* 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 */ - for (block = 0; block < 4; block++) - mv_pred_direct(h, &h->mv[mv_scan[block]], - &h->col_mv[h->mbidx * 4 + block]); - 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: - for (block = 0; block < 4; block++) - sub_type[block] = get_bits(&h->gb, 2); - for (block = 0; block < 4; block++) { - switch (sub_type[block]) { - case B_SUB_DIRECT: - if (!h->col_type_base[h->mbidx]) { - /* intra MB at co-location, do in-plane prediction */ - 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); - } else - mv_pred_direct(h, &h->mv[mv_scan[block]], - &h->col_mv[h->mbidx * 4 + block]); - break; - case B_SUB_FWD: - ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, - MV_PRED_MEDIAN, BLK_8X8, 1); - break; - case B_SUB_SYM: - ff_cavs_mv(h, mv_scan[block], mv_scan[block] - 3, - MV_PRED_MEDIAN, BLK_8X8, 1); - mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8); - break; - } - } - 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); - } - break; - default: - if (mb_type <= B_SYM_16X16) { - av_log(h->avctx, AV_LOG_ERROR, "Invalid mb_type %d in B frame\n", mb_type); - return AVERROR_INVALIDDATA; - } - av_assert2(mb_type < B_8X8); - flags = ff_cavs_partition_flags[mb_type]; - if (mb_type & 1) { /* 16x8 macroblock types */ - if (flags & FWD0) - ff_cavs_mv(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1); - if (flags & SYM0) - mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8); - if (flags & FWD1) - ff_cavs_mv(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1); - if (flags & SYM1) - mv_pred_sym(h, &h->mv[MV_FWD_X2], BLK_16X8); - if (flags & BWD0) - ff_cavs_mv(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0); - if (flags & BWD1) - ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0); - } else { /* 8x16 macroblock types */ - if (flags & FWD0) - ff_cavs_mv(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1); - if (flags & SYM0) - mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16); - if (flags & FWD1) - ff_cavs_mv(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 1); - if (flags & SYM1) - mv_pred_sym(h, &h->mv[MV_FWD_X1], BLK_8X16); - if (flags & BWD0) - ff_cavs_mv(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0); - if (flags & BWD1) - ff_cavs_mv(h, MV_BWD_X1, MV_BWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, 0); - } - } - ff_cavs_inter(h, mb_type); - set_intra_mode_default(h); - if (mb_type != B_SKIP) - decode_residual_inter(h); - ff_cavs_filter(h, mb_type); - - return 0; -} - -/***************************************************************************** - * - * slice level - * - ****************************************************************************/ - -static inline int decode_slice_header(AVSContext *h, GetBitContext *gb) -{ - if (h->stc > 0xAF) - av_log(h->avctx, AV_LOG_ERROR, "unexpected start code 0x%02x\n", h->stc); - - if (h->stc >= h->mb_height) { - av_log(h->avctx, AV_LOG_ERROR, "stc 0x%02x is too large\n", h->stc); - return AVERROR_INVALIDDATA; - } - - h->mby = h->stc; - h->mbidx = h->mby * h->mb_width; - - /* mark top macroblocks as unavailable */ - h->flags &= ~(B_AVAIL | C_AVAIL); - if ((h->mby == 0) && (!h->qp_fixed)) { - h->qp_fixed = get_bits1(gb); - h->qp = get_bits(gb, 6); - } - /* inter frame or second slice can have weighting params */ - if ((h->cur.f->pict_type != AV_PICTURE_TYPE_I) || - (!h->pic_structure && h->mby >= h->mb_width / 2)) - if (get_bits1(gb)) { //slice_weighting_flag - av_log(h->avctx, AV_LOG_ERROR, - "weighted prediction not yet supported\n"); - } - return 0; -} - -static inline int check_for_slice(AVSContext *h) -{ - GetBitContext *gb = &h->gb; - int align; - - if (h->mbx) - return 0; - align = (-get_bits_count(gb)) & 7; - /* check for stuffing byte */ - if (!align && (show_bits(gb, 8) == 0x80)) - align = 8; - if ((show_bits_long(gb, 24 + align) & 0xFFFFFF) == 0x000001) { - skip_bits_long(gb, 24 + align); - h->stc = get_bits(gb, 8); - if (h->stc >= h->mb_height) - return 0; - decode_slice_header(h, gb); - return 1; - } - return 0; -} - -/***************************************************************************** - * - * frame level - * - ****************************************************************************/ - -static int decode_pic(AVSContext *h) -{ - int skip_count = -1; - int ret; - enum cavs_mb mb_type; - - if (!h->top_qp) { - av_log(h->avctx, AV_LOG_ERROR, "No sequence header decoded yet\n"); - return AVERROR_INVALIDDATA; - } - - av_frame_unref(h->cur.f); - - skip_bits(&h->gb, 16);//bbv_dwlay - if (h->stc == PIC_PB_START_CODE) { - h->cur.f->pict_type = get_bits(&h->gb, 2) + AV_PICTURE_TYPE_I; - if (h->cur.f->pict_type > AV_PICTURE_TYPE_B) { - av_log(h->avctx, AV_LOG_ERROR, "illegal picture type\n"); - return AVERROR_INVALIDDATA; - } - /* make sure we have the reference frames we need */ - if (!h->DPB[0].f->data[0] || - (!h->DPB[1].f->data[0] && h->cur.f->pict_type == AV_PICTURE_TYPE_B)) - return AVERROR_INVALIDDATA; - } else { - h->cur.f->pict_type = AV_PICTURE_TYPE_I; - if (get_bits1(&h->gb)) - skip_bits(&h->gb, 24);//time_code - /* old sample clips were all progressive and no low_delay, - bump stream revision if detected otherwise */ - if (h->low_delay || !(show_bits(&h->gb, 9) & 1)) - h->stream_revision = 1; - /* similarly test top_field_first and repeat_first_field */ - else if (show_bits(&h->gb, 11) & 3) - h->stream_revision = 1; - if (h->stream_revision > 0) - skip_bits(&h->gb, 1); //marker_bit - } - - if ((ret = ff_get_buffer(h->avctx, h->cur.f, - h->cur.f->pict_type == AV_PICTURE_TYPE_B ? - 0 : AV_GET_BUFFER_FLAG_REF)) < 0) - return ret; - - 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); - } - - if ((ret = ff_cavs_init_pic(h)) < 0) - return ret; - h->cur.poc = get_bits(&h->gb, 8) * 2; - - /* get temporal distances and MV scaling factors */ - if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { - h->dist[0] = (h->cur.poc - h->DPB[0].poc + 512) % 512; - } else { - h->dist[0] = (h->DPB[0].poc - h->cur.poc + 512) % 512; - } - h->dist[1] = (h->cur.poc - h->DPB[1].poc + 512) % 512; - h->scale_den[0] = h->dist[0] ? 512/h->dist[0] : 0; - h->scale_den[1] = h->dist[1] ? 512/h->dist[1] : 0; - if (h->cur.f->pict_type == AV_PICTURE_TYPE_B) { - h->sym_factor = h->dist[0] * h->scale_den[1]; - } else { - h->direct_den[0] = h->dist[0] ? 16384 / h->dist[0] : 0; - h->direct_den[1] = h->dist[1] ? 16384 / h->dist[1] : 0; - } - - if (h->low_delay) - get_ue_golomb(&h->gb); //bbv_check_times - h->progressive = get_bits1(&h->gb); - h->pic_structure = 1; - if (!h->progressive) - h->pic_structure = get_bits1(&h->gb); - if (!h->pic_structure && h->stc == PIC_PB_START_CODE) - 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); - if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { - if (!h->progressive && !h->pic_structure) - skip_bits1(&h->gb);//what is this? - skip_bits(&h->gb, 4); //reserved bits - } else { - if (!(h->cur.f->pict_type == AV_PICTURE_TYPE_B && h->pic_structure == 1)) - h->ref_flag = get_bits1(&h->gb); - skip_bits(&h->gb, 4); //reserved bits - h->skip_mode_flag = get_bits1(&h->gb); - } - 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); - } else { - h->alpha_offset = h->beta_offset = 0; - } - if (h->cur.f->pict_type == AV_PICTURE_TYPE_I) { - do { - check_for_slice(h); - decode_mb_i(h, 0); - } while (ff_cavs_next_mb(h)); - } else if (h->cur.f->pict_type == AV_PICTURE_TYPE_P) { - do { - if (check_for_slice(h)) - skip_count = -1; - if (h->skip_mode_flag && (skip_count < 0)) - skip_count = get_ue_golomb(&h->gb); - if (h->skip_mode_flag && skip_count--) { - decode_mb_p(h, P_SKIP); - } else { - mb_type = get_ue_golomb(&h->gb) + P_SKIP + h->skip_mode_flag; - if (mb_type > P_8X8) - decode_mb_i(h, mb_type - P_8X8 - 1); - else - decode_mb_p(h, mb_type); - } - } while (ff_cavs_next_mb(h)); - } else { /* AV_PICTURE_TYPE_B */ - do { - if (check_for_slice(h)) - skip_count = -1; - if (h->skip_mode_flag && (skip_count < 0)) - skip_count = get_ue_golomb(&h->gb); - if (h->skip_mode_flag && skip_count--) { - decode_mb_b(h, B_SKIP); - } else { - mb_type = get_ue_golomb(&h->gb) + B_SKIP + h->skip_mode_flag; - if (mb_type > B_8X8) - decode_mb_i(h, mb_type - B_8X8 - 1); - else - decode_mb_b(h, mb_type); - } - } while (ff_cavs_next_mb(h)); - } - if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { - av_frame_unref(h->DPB[1].f); - FFSWAP(AVSFrame, h->cur, h->DPB[1]); - FFSWAP(AVSFrame, h->DPB[0], h->DPB[1]); - } - return 0; -} - -/***************************************************************************** - * - * headers and interface - * - ****************************************************************************/ - -static int decode_seq_header(AVSContext *h) -{ - int frame_rate_code; - int width, height; - - h->profile = get_bits(&h->gb, 8); - h->level = get_bits(&h->gb, 8); - skip_bits1(&h->gb); //progressive sequence - - width = get_bits(&h->gb, 14); - height = get_bits(&h->gb, 14); - if ((h->width || h->height) && (h->width != width || h->height != height)) { - avpriv_report_missing_feature(h->avctx, - "Width/height changing in CAVS"); - return AVERROR_PATCHWELCOME; - } - if (width <= 0 || height <= 0) { - av_log(h->avctx, AV_LOG_ERROR, "Dimensions invalid\n"); - return AVERROR_INVALIDDATA; - } - 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; - if (!h->top_qp) - ff_cavs_init_top_lines(h); - return 0; -} - -static void cavs_flush(AVCodecContext * avctx) -{ - AVSContext *h = avctx->priv_data; - h->got_keyframe = 0; -} - -static int cavs_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, - AVPacket *avpkt) -{ - AVSContext *h = avctx->priv_data; - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - uint32_t stc = -1; - int input_size, ret; - const uint8_t *buf_end; - const uint8_t *buf_ptr; - - if (buf_size == 0) { - if (!h->low_delay && h->DPB[0].f->data[0]) { - *got_frame = 1; - av_frame_move_ref(data, h->DPB[0].f); - } - return 0; - } - - h->stc = 0; - - buf_ptr = buf; - buf_end = buf + buf_size; - for(;;) { - buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &stc); - if ((stc & 0xFFFFFE00) || buf_ptr == buf_end) { - if (!h->stc) - av_log(h->avctx, AV_LOG_WARNING, "no frame decoded\n"); - return FFMAX(0, buf_ptr - buf); - } - input_size = (buf_end - buf_ptr) * 8; - switch (stc) { - case CAVS_START_CODE: - init_get_bits(&h->gb, buf_ptr, input_size); - decode_seq_header(h); - break; - case PIC_I_START_CODE: - if (!h->got_keyframe) { - av_frame_unref(h->DPB[0].f); - av_frame_unref(h->DPB[1].f); - h->got_keyframe = 1; - } - case PIC_PB_START_CODE: - *got_frame = 0; - if (!h->got_keyframe) - break; - init_get_bits(&h->gb, buf_ptr, input_size); - h->stc = stc; - if (decode_pic(h)) - break; - *got_frame = 1; - if (h->cur.f->pict_type != AV_PICTURE_TYPE_B) { - if (h->DPB[1].f->data[0]) { - if ((ret = av_frame_ref(data, h->DPB[1].f)) < 0) - return ret; - } else { - *got_frame = 0; - } - } else { - av_frame_move_ref(data, h->cur.f); - } - break; - case EXT_START_CODE: - //mpeg_decode_extension(avctx, buf_ptr, input_size); - break; - case USER_START_CODE: - //mpeg_decode_user_data(avctx, buf_ptr, input_size); - break; - default: - if (stc <= SLICE_MAX_START_CODE) { - init_get_bits(&h->gb, buf_ptr, input_size); - decode_slice_header(h, &h->gb); - } - break; - } - } -} - -AVCodec ff_cavs_decoder = { - .name = "cavs", - .long_name = NULL_IF_CONFIG_SMALL("Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_CAVS, - .priv_data_size = sizeof(AVSContext), - .init = ff_cavs_init, - .close = ff_cavs_end, - .decode = cavs_decode_frame, - .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY, - .flush = cavs_flush, -}; |