ffmpeg / libavcodec / h264_cavlc.c @ ce5e49b0
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/*
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* H.26L/H.264/AVC/JVT/14496-10/... cavlc bitstream decoding
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* H.264 / AVC / MPEG4 part10 cavlc bitstream decoding.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#define CABAC 0 |
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#include "internal.h" |
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#include "avcodec.h" |
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#include "mpegvideo.h" |
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#include "h264.h" |
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#include "h264data.h" // FIXME FIXME FIXME |
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#include "h264_mvpred.h" |
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#include "golomb.h" |
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//#undef NDEBUG
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#include <assert.h> |
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static const uint8_t golomb_to_inter_cbp_gray[16]={ |
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0, 1, 2, 4, 8, 3, 5,10,12,15, 7,11,13,14, 6, 9, |
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}; |
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|
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static const uint8_t golomb_to_intra4x4_cbp_gray[16]={ |
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15, 0, 7,11,13,14, 3, 5,10,12, 1, 2, 4, 8, 6, 9, |
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}; |
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static const uint8_t chroma_dc_coeff_token_len[4*5]={ |
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2, 0, 0, 0, |
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6, 1, 0, 0, |
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6, 6, 3, 0, |
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6, 7, 7, 6, |
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6, 8, 8, 7, |
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}; |
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|
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static const uint8_t chroma_dc_coeff_token_bits[4*5]={ |
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1, 0, 0, 0, |
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7, 1, 0, 0, |
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4, 6, 1, 0, |
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3, 3, 2, 5, |
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2, 3, 2, 0, |
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}; |
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static const uint8_t coeff_token_len[4][4*17]={ |
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{
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1, 0, 0, 0, |
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6, 2, 0, 0, 8, 6, 3, 0, 9, 8, 7, 5, 10, 9, 8, 6, |
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11,10, 9, 7, 13,11,10, 8, 13,13,11, 9, 13,13,13,10, |
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14,14,13,11, 14,14,14,13, 15,15,14,14, 15,15,15,14, |
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16,15,15,15, 16,16,16,15, 16,16,16,16, 16,16,16,16, |
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}, |
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{
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2, 0, 0, 0, |
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6, 2, 0, 0, 6, 5, 3, 0, 7, 6, 6, 4, 8, 6, 6, 4, |
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8, 7, 7, 5, 9, 8, 8, 6, 11, 9, 9, 6, 11,11,11, 7, |
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12,11,11, 9, 12,12,12,11, 12,12,12,11, 13,13,13,12, |
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13,13,13,13, 13,14,13,13, 14,14,14,13, 14,14,14,14, |
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}, |
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{
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4, 0, 0, 0, |
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6, 4, 0, 0, 6, 5, 4, 0, 6, 5, 5, 4, 7, 5, 5, 4, |
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7, 5, 5, 4, 7, 6, 6, 4, 7, 6, 6, 4, 8, 7, 7, 5, |
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8, 8, 7, 6, 9, 8, 8, 7, 9, 9, 8, 8, 9, 9, 9, 8, |
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10, 9, 9, 9, 10,10,10,10, 10,10,10,10, 10,10,10,10, |
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}, |
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{
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6, 0, 0, 0, |
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6, 6, 0, 0, 6, 6, 6, 0, 6, 6, 6, 6, 6, 6, 6, 6, |
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
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} |
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}; |
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static const uint8_t coeff_token_bits[4][4*17]={ |
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{
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1, 0, 0, 0, |
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5, 1, 0, 0, 7, 4, 1, 0, 7, 6, 5, 3, 7, 6, 5, 3, |
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7, 6, 5, 4, 15, 6, 5, 4, 11,14, 5, 4, 8,10,13, 4, |
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15,14, 9, 4, 11,10,13,12, 15,14, 9,12, 11,10,13, 8, |
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15, 1, 9,12, 11,14,13, 8, 7,10, 9,12, 4, 6, 5, 8, |
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}, |
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{
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3, 0, 0, 0, |
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11, 2, 0, 0, 7, 7, 3, 0, 7,10, 9, 5, 7, 6, 5, 4, |
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4, 6, 5, 6, 7, 6, 5, 8, 15, 6, 5, 4, 11,14,13, 4, |
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15,10, 9, 4, 11,14,13,12, 8,10, 9, 8, 15,14,13,12, |
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11,10, 9,12, 7,11, 6, 8, 9, 8,10, 1, 7, 6, 5, 4, |
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}, |
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{
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15, 0, 0, 0, |
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15,14, 0, 0, 11,15,13, 0, 8,12,14,12, 15,10,11,11, |
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11, 8, 9,10, 9,14,13, 9, 8,10, 9, 8, 15,14,13,13, |
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11,14,10,12, 15,10,13,12, 11,14, 9,12, 8,10,13, 8, |
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13, 7, 9,12, 9,12,11,10, 5, 8, 7, 6, 1, 4, 3, 2, |
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}, |
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{
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3, 0, 0, 0, |
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0, 1, 0, 0, 4, 5, 6, 0, 8, 9,10,11, 12,13,14,15, |
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16,17,18,19, 20,21,22,23, 24,25,26,27, 28,29,30,31, |
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32,33,34,35, 36,37,38,39, 40,41,42,43, 44,45,46,47, |
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48,49,50,51, 52,53,54,55, 56,57,58,59, 60,61,62,63, |
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} |
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}; |
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static const uint8_t total_zeros_len[16][16]= { |
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{1,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9},
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{3,3,3,3,3,4,4,4,4,5,5,6,6,6,6},
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{4,3,3,3,4,4,3,3,4,5,5,6,5,6},
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{5,3,4,4,3,3,3,4,3,4,5,5,5},
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{4,4,4,3,3,3,3,3,4,5,4,5},
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{6,5,3,3,3,3,3,3,4,3,6},
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{6,5,3,3,3,2,3,4,3,6},
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{6,4,5,3,2,2,3,3,6},
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{6,6,4,2,2,3,2,5},
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{5,5,3,2,2,2,4},
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{4,4,3,3,1,3},
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{4,4,2,1,3},
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{3,3,1,2},
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{2,2,1},
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{1,1},
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}; |
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static const uint8_t total_zeros_bits[16][16]= { |
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{1,3,2,3,2,3,2,3,2,3,2,3,2,3,2,1},
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{7,6,5,4,3,5,4,3,2,3,2,3,2,1,0},
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{5,7,6,5,4,3,4,3,2,3,2,1,1,0},
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{3,7,5,4,6,5,4,3,3,2,2,1,0},
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{5,4,3,7,6,5,4,3,2,1,1,0},
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{1,1,7,6,5,4,3,2,1,1,0},
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{1,1,5,4,3,3,2,1,1,0},
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{1,1,1,3,3,2,2,1,0},
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{1,0,1,3,2,1,1,1},
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{1,0,1,3,2,1,1},
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{0,1,1,2,1,3},
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{0,1,1,1,1},
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{0,1,1,1},
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{0,1,1},
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{0,1},
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}; |
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static const uint8_t chroma_dc_total_zeros_len[3][4]= { |
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{ 1, 2, 3, 3,},
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{ 1, 2, 2, 0,},
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{ 1, 1, 0, 0,},
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}; |
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static const uint8_t chroma_dc_total_zeros_bits[3][4]= { |
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{ 1, 1, 1, 0,},
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{ 1, 1, 0, 0,},
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{ 1, 0, 0, 0,},
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}; |
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static const uint8_t run_len[7][16]={ |
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{1,1},
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{1,2,2},
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{2,2,2,2},
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{2,2,2,3,3},
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{2,2,3,3,3,3},
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{2,3,3,3,3,3,3},
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{3,3,3,3,3,3,3,4,5,6,7,8,9,10,11},
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}; |
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static const uint8_t run_bits[7][16]={ |
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{1,0},
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{1,1,0},
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{3,2,1,0},
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{3,2,1,1,0},
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{3,2,3,2,1,0},
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{3,0,1,3,2,5,4},
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{7,6,5,4,3,2,1,1,1,1,1,1,1,1,1},
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}; |
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static VLC coeff_token_vlc[4]; |
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static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2]; |
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static const int coeff_token_vlc_tables_size[4]={520,332,280,256}; |
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static VLC chroma_dc_coeff_token_vlc;
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static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2]; |
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static const int chroma_dc_coeff_token_vlc_table_size = 256; |
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static VLC total_zeros_vlc[15]; |
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static VLC_TYPE total_zeros_vlc_tables[15][512][2]; |
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static const int total_zeros_vlc_tables_size = 512; |
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static VLC chroma_dc_total_zeros_vlc[3]; |
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static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2]; |
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static const int chroma_dc_total_zeros_vlc_tables_size = 8; |
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static VLC run_vlc[6]; |
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static VLC_TYPE run_vlc_tables[6][8][2]; |
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static const int run_vlc_tables_size = 8; |
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static VLC run7_vlc;
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static VLC_TYPE run7_vlc_table[96][2]; |
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static const int run7_vlc_table_size = 96; |
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#define LEVEL_TAB_BITS 8 |
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static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2]; |
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/**
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* gets the predicted number of non-zero coefficients.
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* @param n block index
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*/
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static inline int pred_non_zero_count(H264Context *h, int n){ |
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const int index8= scan8[n]; |
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const int left= h->non_zero_count_cache[index8 - 1]; |
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const int top = h->non_zero_count_cache[index8 - 8]; |
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int i= left + top;
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if(i<64) i= (i+1)>>1; |
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tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31); |
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return i&31; |
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} |
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static av_cold void init_cavlc_level_tab(void){ |
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int suffix_length, mask;
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unsigned int i; |
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for(suffix_length=0; suffix_length<7; suffix_length++){ |
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for(i=0; i<(1<<LEVEL_TAB_BITS); i++){ |
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int prefix= LEVEL_TAB_BITS - av_log2(2*i); |
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int level_code= (prefix<<suffix_length) + (i>>(LEVEL_TAB_BITS-prefix-1-suffix_length)) - (1<<suffix_length); |
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mask= -(level_code&1);
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level_code= (((2+level_code)>>1) ^ mask) - mask; |
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if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){ |
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cavlc_level_tab[suffix_length][i][0]= level_code;
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cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length; |
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}else if(prefix + 1 <= LEVEL_TAB_BITS){ |
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cavlc_level_tab[suffix_length][i][0]= prefix+100; |
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cavlc_level_tab[suffix_length][i][1]= prefix + 1; |
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}else{
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cavlc_level_tab[suffix_length][i][0]= LEVEL_TAB_BITS+100; |
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cavlc_level_tab[suffix_length][i][1]= LEVEL_TAB_BITS;
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} |
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} |
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} |
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} |
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|
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av_cold void ff_h264_decode_init_vlc(void){ |
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static int done = 0; |
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if (!done) {
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int i;
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int offset;
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done = 1;
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chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table; |
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chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size; |
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init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5, |
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&chroma_dc_coeff_token_len [0], 1, 1, |
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&chroma_dc_coeff_token_bits[0], 1, 1, |
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INIT_VLC_USE_NEW_STATIC); |
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offset = 0;
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for(i=0; i<4; i++){ |
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coeff_token_vlc[i].table = coeff_token_vlc_tables+offset; |
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coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i]; |
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init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17, |
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&coeff_token_len [i][0], 1, 1, |
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&coeff_token_bits[i][0], 1, 1, |
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INIT_VLC_USE_NEW_STATIC); |
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offset += coeff_token_vlc_tables_size[i]; |
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} |
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/*
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* This is a one time safety check to make sure that
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* the packed static coeff_token_vlc table sizes
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* were initialized correctly.
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*/
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assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables)); |
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for(i=0; i<3; i++){ |
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chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i]; |
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chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size; |
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init_vlc(&chroma_dc_total_zeros_vlc[i], |
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CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
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&chroma_dc_total_zeros_len [i][0], 1, 1, |
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&chroma_dc_total_zeros_bits[i][0], 1, 1, |
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INIT_VLC_USE_NEW_STATIC); |
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} |
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for(i=0; i<15; i++){ |
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total_zeros_vlc[i].table = total_zeros_vlc_tables[i]; |
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total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size; |
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init_vlc(&total_zeros_vlc[i], |
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TOTAL_ZEROS_VLC_BITS, 16,
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&total_zeros_len [i][0], 1, 1, |
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&total_zeros_bits[i][0], 1, 1, |
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INIT_VLC_USE_NEW_STATIC); |
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} |
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|
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for(i=0; i<6; i++){ |
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run_vlc[i].table = run_vlc_tables[i]; |
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run_vlc[i].table_allocated = run_vlc_tables_size; |
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init_vlc(&run_vlc[i], |
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RUN_VLC_BITS, 7,
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&run_len [i][0], 1, 1, |
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&run_bits[i][0], 1, 1, |
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INIT_VLC_USE_NEW_STATIC); |
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} |
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run7_vlc.table = run7_vlc_table, |
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run7_vlc.table_allocated = run7_vlc_table_size; |
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init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
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&run_len [6][0], 1, 1, |
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&run_bits[6][0], 1, 1, |
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INIT_VLC_USE_NEW_STATIC); |
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|
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init_cavlc_level_tab(); |
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} |
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} |
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|
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/**
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*
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*/
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static inline int get_level_prefix(GetBitContext *gb){ |
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unsigned int buf; |
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int log;
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|
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OPEN_READER(re, gb); |
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UPDATE_CACHE(re, gb); |
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buf=GET_CACHE(re, gb); |
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log= 32 - av_log2(buf);
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#ifdef TRACE
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print_bin(buf>>(32-log), log);
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av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__); |
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#endif
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|
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LAST_SKIP_BITS(re, gb, log); |
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CLOSE_READER(re, gb); |
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return log-1; |
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} |
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|
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/**
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* decodes a residual block.
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* @param n block index
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* @param scantable scantable
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* @param max_coeff number of coefficients in the block
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* @return <0 if an error occurred
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*/
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static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){ |
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MpegEncContext * const s = &h->s;
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static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3}; |
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int level[16]; |
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int zeros_left, coeff_token, total_coeff, i, trailing_ones, run_before;
|
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|
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//FIXME put trailing_onex into the context
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|
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if(n >= CHROMA_DC_BLOCK_INDEX){
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coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
|
| 376 |
total_coeff= coeff_token>>2;
|
| 377 |
}else{
|
| 378 |
if(n == LUMA_DC_BLOCK_INDEX){
|
| 379 |
total_coeff= pred_non_zero_count(h, 0);
|
| 380 |
coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
|
| 381 |
total_coeff= coeff_token>>2;
|
| 382 |
}else{
|
| 383 |
total_coeff= pred_non_zero_count(h, n); |
| 384 |
coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
|
| 385 |
total_coeff= coeff_token>>2;
|
| 386 |
} |
| 387 |
} |
| 388 |
h->non_zero_count_cache[ scan8[n] ]= total_coeff; |
| 389 |
|
| 390 |
//FIXME set last_non_zero?
|
| 391 |
|
| 392 |
if(total_coeff==0) |
| 393 |
return 0; |
| 394 |
if(total_coeff > (unsigned)max_coeff) { |
| 395 |
av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
|
| 396 |
return -1; |
| 397 |
} |
| 398 |
|
| 399 |
trailing_ones= coeff_token&3;
|
| 400 |
tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
|
| 401 |
assert(total_coeff<=16);
|
| 402 |
|
| 403 |
i = show_bits(gb, 3);
|
| 404 |
skip_bits(gb, trailing_ones); |
| 405 |
level[0] = 1-((i&4)>>1); |
| 406 |
level[1] = 1-((i&2) ); |
| 407 |
level[2] = 1-((i&1)<<1); |
| 408 |
|
| 409 |
if(trailing_ones<total_coeff) {
|
| 410 |
int mask, prefix;
|
| 411 |
int suffix_length = total_coeff > 10 & trailing_ones < 3; |
| 412 |
int bitsi= show_bits(gb, LEVEL_TAB_BITS);
|
| 413 |
int level_code= cavlc_level_tab[suffix_length][bitsi][0]; |
| 414 |
|
| 415 |
skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
|
| 416 |
if(level_code >= 100){ |
| 417 |
prefix= level_code - 100;
|
| 418 |
if(prefix == LEVEL_TAB_BITS)
|
| 419 |
prefix += get_level_prefix(gb); |
| 420 |
|
| 421 |
//first coefficient has suffix_length equal to 0 or 1
|
| 422 |
if(prefix<14){ //FIXME try to build a large unified VLC table for all this |
| 423 |
if(suffix_length)
|
| 424 |
level_code= (prefix<<1) + get_bits1(gb); //part |
| 425 |
else
|
| 426 |
level_code= prefix; //part
|
| 427 |
}else if(prefix==14){ |
| 428 |
if(suffix_length)
|
| 429 |
level_code= (prefix<<1) + get_bits1(gb); //part |
| 430 |
else
|
| 431 |
level_code= prefix + get_bits(gb, 4); //part |
| 432 |
}else{
|
| 433 |
level_code= 30 + get_bits(gb, prefix-3); //part |
| 434 |
if(prefix>=16){ |
| 435 |
if(prefix > 25+3){ |
| 436 |
av_log(h->s.avctx, AV_LOG_ERROR, "Invalid level prefix\n");
|
| 437 |
return -1; |
| 438 |
} |
| 439 |
level_code += (1<<(prefix-3))-4096; |
| 440 |
} |
| 441 |
} |
| 442 |
|
| 443 |
if(trailing_ones < 3) level_code += 2; |
| 444 |
|
| 445 |
suffix_length = 2;
|
| 446 |
mask= -(level_code&1);
|
| 447 |
level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask; |
| 448 |
}else{
|
| 449 |
level_code += ((level_code>>31)|1) & -(trailing_ones < 3); |
| 450 |
|
| 451 |
suffix_length = 1 + (level_code + 3U > 6U); |
| 452 |
level[trailing_ones]= level_code; |
| 453 |
} |
| 454 |
|
| 455 |
//remaining coefficients have suffix_length > 0
|
| 456 |
for(i=trailing_ones+1;i<total_coeff;i++) { |
| 457 |
static const unsigned int suffix_limit[7] = {0,3,6,12,24,48,INT_MAX }; |
| 458 |
int bitsi= show_bits(gb, LEVEL_TAB_BITS);
|
| 459 |
level_code= cavlc_level_tab[suffix_length][bitsi][0];
|
| 460 |
|
| 461 |
skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
|
| 462 |
if(level_code >= 100){ |
| 463 |
prefix= level_code - 100;
|
| 464 |
if(prefix == LEVEL_TAB_BITS){
|
| 465 |
prefix += get_level_prefix(gb); |
| 466 |
} |
| 467 |
if(prefix<15){ |
| 468 |
level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length); |
| 469 |
}else{
|
| 470 |
level_code = (15<<suffix_length) + get_bits(gb, prefix-3); |
| 471 |
if(prefix>=16) |
| 472 |
level_code += (1<<(prefix-3))-4096; |
| 473 |
} |
| 474 |
mask= -(level_code&1);
|
| 475 |
level_code= (((2+level_code)>>1) ^ mask) - mask; |
| 476 |
} |
| 477 |
level[i]= level_code; |
| 478 |
suffix_length+= suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length];
|
| 479 |
} |
| 480 |
} |
| 481 |
|
| 482 |
if(total_coeff == max_coeff)
|
| 483 |
zeros_left=0;
|
| 484 |
else{
|
| 485 |
if(n >= CHROMA_DC_BLOCK_INDEX)
|
| 486 |
zeros_left= get_vlc2(gb, (chroma_dc_total_zeros_vlc-1)[ total_coeff ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1); |
| 487 |
else
|
| 488 |
zeros_left= get_vlc2(gb, (total_zeros_vlc-1)[ total_coeff ].table, TOTAL_ZEROS_VLC_BITS, 1); |
| 489 |
} |
| 490 |
|
| 491 |
#define STORE_BLOCK(type) \
|
| 492 |
scantable += zeros_left + total_coeff - 1; \
|
| 493 |
if(n >= LUMA_DC_BLOCK_INDEX){ \
|
| 494 |
((type*)block)[*scantable] = level[0]; \
|
| 495 |
for(i=1;i<total_coeff && zeros_left > 0;i++) { \ |
| 496 |
if(zeros_left < 7) \ |
| 497 |
run_before= get_vlc2(gb, (run_vlc-1)[zeros_left].table, RUN_VLC_BITS, 1); \ |
| 498 |
else \
|
| 499 |
run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \
|
| 500 |
zeros_left -= run_before; \ |
| 501 |
scantable -= 1 + run_before; \
|
| 502 |
((type*)block)[*scantable]= level[i]; \ |
| 503 |
} \ |
| 504 |
for(;i<total_coeff;i++) { \
|
| 505 |
scantable--; \ |
| 506 |
((type*)block)[*scantable]= level[i]; \ |
| 507 |
} \ |
| 508 |
}else{ \
|
| 509 |
((type*)block)[*scantable] = ((int)(level[0] * qmul[*scantable] + 32))>>6; \ |
| 510 |
for(i=1;i<total_coeff && zeros_left > 0;i++) { \ |
| 511 |
if(zeros_left < 7) \ |
| 512 |
run_before= get_vlc2(gb, (run_vlc-1)[zeros_left].table, RUN_VLC_BITS, 1); \ |
| 513 |
else \
|
| 514 |
run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \
|
| 515 |
zeros_left -= run_before; \ |
| 516 |
scantable -= 1 + run_before; \
|
| 517 |
((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \ |
| 518 |
} \ |
| 519 |
for(;i<total_coeff;i++) { \
|
| 520 |
scantable--; \ |
| 521 |
((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \ |
| 522 |
} \ |
| 523 |
} |
| 524 |
|
| 525 |
if (h->pixel_shift) {
|
| 526 |
STORE_BLOCK(int32_t) |
| 527 |
} else {
|
| 528 |
STORE_BLOCK(int16_t) |
| 529 |
} |
| 530 |
|
| 531 |
if(zeros_left<0){ |
| 532 |
av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
|
| 533 |
return -1; |
| 534 |
} |
| 535 |
|
| 536 |
return 0; |
| 537 |
} |
| 538 |
|
| 539 |
int ff_h264_decode_mb_cavlc(H264Context *h){
|
| 540 |
MpegEncContext * const s = &h->s;
|
| 541 |
int mb_xy;
|
| 542 |
int partition_count;
|
| 543 |
unsigned int mb_type, cbp; |
| 544 |
int dct8x8_allowed= h->pps.transform_8x8_mode;
|
| 545 |
|
| 546 |
mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride; |
| 547 |
|
| 548 |
tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
|
| 549 |
cbp = 0; /* avoid warning. FIXME: find a solution without slowing |
| 550 |
down the code */
|
| 551 |
if(h->slice_type_nos != AV_PICTURE_TYPE_I){
|
| 552 |
if(s->mb_skip_run==-1) |
| 553 |
s->mb_skip_run= get_ue_golomb(&s->gb); |
| 554 |
|
| 555 |
if (s->mb_skip_run--) {
|
| 556 |
if(FRAME_MBAFF && (s->mb_y&1) == 0){ |
| 557 |
if(s->mb_skip_run==0) |
| 558 |
h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb); |
| 559 |
} |
| 560 |
decode_mb_skip(h); |
| 561 |
return 0; |
| 562 |
} |
| 563 |
} |
| 564 |
if(FRAME_MBAFF){
|
| 565 |
if( (s->mb_y&1) == 0 ) |
| 566 |
h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb); |
| 567 |
} |
| 568 |
|
| 569 |
h->prev_mb_skipped= 0;
|
| 570 |
|
| 571 |
mb_type= get_ue_golomb(&s->gb); |
| 572 |
if(h->slice_type_nos == AV_PICTURE_TYPE_B){
|
| 573 |
if(mb_type < 23){ |
| 574 |
partition_count= b_mb_type_info[mb_type].partition_count; |
| 575 |
mb_type= b_mb_type_info[mb_type].type; |
| 576 |
}else{
|
| 577 |
mb_type -= 23;
|
| 578 |
goto decode_intra_mb;
|
| 579 |
} |
| 580 |
}else if(h->slice_type_nos == AV_PICTURE_TYPE_P){ |
| 581 |
if(mb_type < 5){ |
| 582 |
partition_count= p_mb_type_info[mb_type].partition_count; |
| 583 |
mb_type= p_mb_type_info[mb_type].type; |
| 584 |
}else{
|
| 585 |
mb_type -= 5;
|
| 586 |
goto decode_intra_mb;
|
| 587 |
} |
| 588 |
}else{
|
| 589 |
assert(h->slice_type_nos == AV_PICTURE_TYPE_I); |
| 590 |
if(h->slice_type == AV_PICTURE_TYPE_SI && mb_type)
|
| 591 |
mb_type--; |
| 592 |
decode_intra_mb:
|
| 593 |
if(mb_type > 25){ |
| 594 |
av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(h->slice_type), s->mb_x, s->mb_y);
|
| 595 |
return -1; |
| 596 |
} |
| 597 |
partition_count=0;
|
| 598 |
cbp= i_mb_type_info[mb_type].cbp; |
| 599 |
h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode; |
| 600 |
mb_type= i_mb_type_info[mb_type].type; |
| 601 |
} |
| 602 |
|
| 603 |
if(MB_FIELD)
|
| 604 |
mb_type |= MB_TYPE_INTERLACED; |
| 605 |
|
| 606 |
h->slice_table[ mb_xy ]= h->slice_num; |
| 607 |
|
| 608 |
if(IS_INTRA_PCM(mb_type)){
|
| 609 |
unsigned int x; |
| 610 |
|
| 611 |
// We assume these blocks are very rare so we do not optimize it.
|
| 612 |
align_get_bits(&s->gb); |
| 613 |
|
| 614 |
// The pixels are stored in the same order as levels in h->mb array.
|
| 615 |
for(x=0; x < (CHROMA ? 384 : 256)*h->sps.bit_depth_luma/8; x++){ |
| 616 |
((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
|
| 617 |
} |
| 618 |
|
| 619 |
// In deblocking, the quantizer is 0
|
| 620 |
s->current_picture.qscale_table[mb_xy]= 0;
|
| 621 |
// All coeffs are present
|
| 622 |
memset(h->non_zero_count[mb_xy], 16, 32); |
| 623 |
|
| 624 |
s->current_picture.mb_type[mb_xy]= mb_type; |
| 625 |
return 0; |
| 626 |
} |
| 627 |
|
| 628 |
if(MB_MBAFF){
|
| 629 |
h->ref_count[0] <<= 1; |
| 630 |
h->ref_count[1] <<= 1; |
| 631 |
} |
| 632 |
|
| 633 |
fill_decode_neighbors(h, mb_type); |
| 634 |
fill_decode_caches(h, mb_type); |
| 635 |
|
| 636 |
//mb_pred
|
| 637 |
if(IS_INTRA(mb_type)){
|
| 638 |
int pred_mode;
|
| 639 |
// init_top_left_availability(h);
|
| 640 |
if(IS_INTRA4x4(mb_type)){
|
| 641 |
int i;
|
| 642 |
int di = 1; |
| 643 |
if(dct8x8_allowed && get_bits1(&s->gb)){
|
| 644 |
mb_type |= MB_TYPE_8x8DCT; |
| 645 |
di = 4;
|
| 646 |
} |
| 647 |
|
| 648 |
// fill_intra4x4_pred_table(h);
|
| 649 |
for(i=0; i<16; i+=di){ |
| 650 |
int mode= pred_intra_mode(h, i);
|
| 651 |
|
| 652 |
if(!get_bits1(&s->gb)){
|
| 653 |
const int rem_mode= get_bits(&s->gb, 3); |
| 654 |
mode = rem_mode + (rem_mode >= mode); |
| 655 |
} |
| 656 |
|
| 657 |
if(di==4) |
| 658 |
fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 ); |
| 659 |
else
|
| 660 |
h->intra4x4_pred_mode_cache[ scan8[i] ] = mode; |
| 661 |
} |
| 662 |
ff_h264_write_back_intra_pred_mode(h); |
| 663 |
if( ff_h264_check_intra4x4_pred_mode(h) < 0) |
| 664 |
return -1; |
| 665 |
}else{
|
| 666 |
h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode(h, h->intra16x16_pred_mode); |
| 667 |
if(h->intra16x16_pred_mode < 0) |
| 668 |
return -1; |
| 669 |
} |
| 670 |
if(CHROMA){
|
| 671 |
pred_mode= ff_h264_check_intra_pred_mode(h, get_ue_golomb_31(&s->gb)); |
| 672 |
if(pred_mode < 0) |
| 673 |
return -1; |
| 674 |
h->chroma_pred_mode= pred_mode; |
| 675 |
} else {
|
| 676 |
h->chroma_pred_mode = DC_128_PRED8x8; |
| 677 |
} |
| 678 |
}else if(partition_count==4){ |
| 679 |
int i, j, sub_partition_count[4], list, ref[2][4]; |
| 680 |
|
| 681 |
if(h->slice_type_nos == AV_PICTURE_TYPE_B){
|
| 682 |
for(i=0; i<4; i++){ |
| 683 |
h->sub_mb_type[i]= get_ue_golomb_31(&s->gb); |
| 684 |
if(h->sub_mb_type[i] >=13){ |
| 685 |
av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
|
| 686 |
return -1; |
| 687 |
} |
| 688 |
sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; |
| 689 |
h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type; |
| 690 |
} |
| 691 |
if( IS_DIRECT(h->sub_mb_type[0]|h->sub_mb_type[1]|h->sub_mb_type[2]|h->sub_mb_type[3])) { |
| 692 |
ff_h264_pred_direct_motion(h, &mb_type); |
| 693 |
h->ref_cache[0][scan8[4]] = |
| 694 |
h->ref_cache[1][scan8[4]] = |
| 695 |
h->ref_cache[0][scan8[12]] = |
| 696 |
h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE; |
| 697 |
} |
| 698 |
}else{
|
| 699 |
assert(h->slice_type_nos == AV_PICTURE_TYPE_P); //FIXME SP correct ?
|
| 700 |
for(i=0; i<4; i++){ |
| 701 |
h->sub_mb_type[i]= get_ue_golomb_31(&s->gb); |
| 702 |
if(h->sub_mb_type[i] >=4){ |
| 703 |
av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
|
| 704 |
return -1; |
| 705 |
} |
| 706 |
sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; |
| 707 |
h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type; |
| 708 |
} |
| 709 |
} |
| 710 |
|
| 711 |
for(list=0; list<h->list_count; list++){ |
| 712 |
int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list]; |
| 713 |
for(i=0; i<4; i++){ |
| 714 |
if(IS_DIRECT(h->sub_mb_type[i])) continue; |
| 715 |
if(IS_DIR(h->sub_mb_type[i], 0, list)){ |
| 716 |
unsigned int tmp; |
| 717 |
if(ref_count == 1){ |
| 718 |
tmp= 0;
|
| 719 |
}else if(ref_count == 2){ |
| 720 |
tmp= get_bits1(&s->gb)^1;
|
| 721 |
}else{
|
| 722 |
tmp= get_ue_golomb_31(&s->gb); |
| 723 |
if(tmp>=ref_count){
|
| 724 |
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
|
| 725 |
return -1; |
| 726 |
} |
| 727 |
} |
| 728 |
ref[list][i]= tmp; |
| 729 |
}else{
|
| 730 |
//FIXME
|
| 731 |
ref[list][i] = -1;
|
| 732 |
} |
| 733 |
} |
| 734 |
} |
| 735 |
|
| 736 |
if(dct8x8_allowed)
|
| 737 |
dct8x8_allowed = get_dct8x8_allowed(h); |
| 738 |
|
| 739 |
for(list=0; list<h->list_count; list++){ |
| 740 |
for(i=0; i<4; i++){ |
| 741 |
if(IS_DIRECT(h->sub_mb_type[i])) {
|
| 742 |
h->ref_cache[list][ scan8[4*i] ] = h->ref_cache[list][ scan8[4*i]+1 ]; |
| 743 |
continue;
|
| 744 |
} |
| 745 |
h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]= |
| 746 |
h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i]; |
| 747 |
|
| 748 |
if(IS_DIR(h->sub_mb_type[i], 0, list)){ |
| 749 |
const int sub_mb_type= h->sub_mb_type[i]; |
| 750 |
const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1; |
| 751 |
for(j=0; j<sub_partition_count[i]; j++){ |
| 752 |
int mx, my;
|
| 753 |
const int index= 4*i + block_width*j; |
| 754 |
int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
|
| 755 |
pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my); |
| 756 |
mx += get_se_golomb(&s->gb); |
| 757 |
my += get_se_golomb(&s->gb); |
| 758 |
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
|
| 759 |
|
| 760 |
if(IS_SUB_8X8(sub_mb_type)){
|
| 761 |
mv_cache[ 1 ][0]= |
| 762 |
mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx; |
| 763 |
mv_cache[ 1 ][1]= |
| 764 |
mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my; |
| 765 |
}else if(IS_SUB_8X4(sub_mb_type)){ |
| 766 |
mv_cache[ 1 ][0]= mx; |
| 767 |
mv_cache[ 1 ][1]= my; |
| 768 |
}else if(IS_SUB_4X8(sub_mb_type)){ |
| 769 |
mv_cache[ 8 ][0]= mx; |
| 770 |
mv_cache[ 8 ][1]= my; |
| 771 |
} |
| 772 |
mv_cache[ 0 ][0]= mx; |
| 773 |
mv_cache[ 0 ][1]= my; |
| 774 |
} |
| 775 |
}else{
|
| 776 |
uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0]; |
| 777 |
p[0] = p[1]= |
| 778 |
p[8] = p[9]= 0; |
| 779 |
} |
| 780 |
} |
| 781 |
} |
| 782 |
}else if(IS_DIRECT(mb_type)){ |
| 783 |
ff_h264_pred_direct_motion(h, &mb_type); |
| 784 |
dct8x8_allowed &= h->sps.direct_8x8_inference_flag; |
| 785 |
}else{
|
| 786 |
int list, mx, my, i;
|
| 787 |
//FIXME we should set ref_idx_l? to 0 if we use that later ...
|
| 788 |
if(IS_16X16(mb_type)){
|
| 789 |
for(list=0; list<h->list_count; list++){ |
| 790 |
unsigned int val; |
| 791 |
if(IS_DIR(mb_type, 0, list)){ |
| 792 |
if(h->ref_count[list]==1){ |
| 793 |
val= 0;
|
| 794 |
}else if(h->ref_count[list]==2){ |
| 795 |
val= get_bits1(&s->gb)^1;
|
| 796 |
}else{
|
| 797 |
val= get_ue_golomb_31(&s->gb); |
| 798 |
if(val >= h->ref_count[list]){
|
| 799 |
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
|
| 800 |
return -1; |
| 801 |
} |
| 802 |
} |
| 803 |
fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1); |
| 804 |
} |
| 805 |
} |
| 806 |
for(list=0; list<h->list_count; list++){ |
| 807 |
if(IS_DIR(mb_type, 0, list)){ |
| 808 |
pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my); |
| 809 |
mx += get_se_golomb(&s->gb); |
| 810 |
my += get_se_golomb(&s->gb); |
| 811 |
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
|
| 812 |
|
| 813 |
fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4); |
| 814 |
} |
| 815 |
} |
| 816 |
} |
| 817 |
else if(IS_16X8(mb_type)){ |
| 818 |
for(list=0; list<h->list_count; list++){ |
| 819 |
for(i=0; i<2; i++){ |
| 820 |
unsigned int val; |
| 821 |
if(IS_DIR(mb_type, i, list)){
|
| 822 |
if(h->ref_count[list] == 1){ |
| 823 |
val= 0;
|
| 824 |
}else if(h->ref_count[list] == 2){ |
| 825 |
val= get_bits1(&s->gb)^1;
|
| 826 |
}else{
|
| 827 |
val= get_ue_golomb_31(&s->gb); |
| 828 |
if(val >= h->ref_count[list]){
|
| 829 |
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
|
| 830 |
return -1; |
| 831 |
} |
| 832 |
} |
| 833 |
}else
|
| 834 |
val= LIST_NOT_USED&0xFF;
|
| 835 |
fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1); |
| 836 |
} |
| 837 |
} |
| 838 |
for(list=0; list<h->list_count; list++){ |
| 839 |
for(i=0; i<2; i++){ |
| 840 |
unsigned int val; |
| 841 |
if(IS_DIR(mb_type, i, list)){
|
| 842 |
pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my); |
| 843 |
mx += get_se_golomb(&s->gb); |
| 844 |
my += get_se_golomb(&s->gb); |
| 845 |
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
|
| 846 |
|
| 847 |
val= pack16to32(mx,my); |
| 848 |
}else
|
| 849 |
val=0;
|
| 850 |
fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4); |
| 851 |
} |
| 852 |
} |
| 853 |
}else{
|
| 854 |
assert(IS_8X16(mb_type)); |
| 855 |
for(list=0; list<h->list_count; list++){ |
| 856 |
for(i=0; i<2; i++){ |
| 857 |
unsigned int val; |
| 858 |
if(IS_DIR(mb_type, i, list)){ //FIXME optimize |
| 859 |
if(h->ref_count[list]==1){ |
| 860 |
val= 0;
|
| 861 |
}else if(h->ref_count[list]==2){ |
| 862 |
val= get_bits1(&s->gb)^1;
|
| 863 |
}else{
|
| 864 |
val= get_ue_golomb_31(&s->gb); |
| 865 |
if(val >= h->ref_count[list]){
|
| 866 |
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
|
| 867 |
return -1; |
| 868 |
} |
| 869 |
} |
| 870 |
}else
|
| 871 |
val= LIST_NOT_USED&0xFF;
|
| 872 |
fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1); |
| 873 |
} |
| 874 |
} |
| 875 |
for(list=0; list<h->list_count; list++){ |
| 876 |
for(i=0; i<2; i++){ |
| 877 |
unsigned int val; |
| 878 |
if(IS_DIR(mb_type, i, list)){
|
| 879 |
pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my); |
| 880 |
mx += get_se_golomb(&s->gb); |
| 881 |
my += get_se_golomb(&s->gb); |
| 882 |
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
|
| 883 |
|
| 884 |
val= pack16to32(mx,my); |
| 885 |
}else
|
| 886 |
val=0;
|
| 887 |
fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4); |
| 888 |
} |
| 889 |
} |
| 890 |
} |
| 891 |
} |
| 892 |
|
| 893 |
if(IS_INTER(mb_type))
|
| 894 |
write_back_motion(h, mb_type); |
| 895 |
|
| 896 |
if(!IS_INTRA16x16(mb_type)){
|
| 897 |
cbp= get_ue_golomb(&s->gb); |
| 898 |
if(cbp > 47){ |
| 899 |
av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, s->mb_x, s->mb_y);
|
| 900 |
return -1; |
| 901 |
} |
| 902 |
|
| 903 |
if(CHROMA){
|
| 904 |
if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp];
|
| 905 |
else cbp= golomb_to_inter_cbp [cbp];
|
| 906 |
}else{
|
| 907 |
if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
|
| 908 |
else cbp= golomb_to_inter_cbp_gray[cbp];
|
| 909 |
} |
| 910 |
} |
| 911 |
|
| 912 |
if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){ |
| 913 |
mb_type |= MB_TYPE_8x8DCT*get_bits1(&s->gb); |
| 914 |
} |
| 915 |
h->cbp= |
| 916 |
h->cbp_table[mb_xy]= cbp; |
| 917 |
s->current_picture.mb_type[mb_xy]= mb_type; |
| 918 |
|
| 919 |
if(cbp || IS_INTRA16x16(mb_type)){
|
| 920 |
int i8x8, i4x4, chroma_idx;
|
| 921 |
int dquant;
|
| 922 |
GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr; |
| 923 |
const uint8_t *scan, *scan8x8;
|
| 924 |
const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8); |
| 925 |
|
| 926 |
if(IS_INTERLACED(mb_type)){
|
| 927 |
scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0; |
| 928 |
scan= s->qscale ? h->field_scan : h->field_scan_q0; |
| 929 |
}else{
|
| 930 |
scan8x8= s->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0; |
| 931 |
scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0; |
| 932 |
} |
| 933 |
|
| 934 |
dquant= get_se_golomb(&s->gb); |
| 935 |
|
| 936 |
s->qscale += dquant; |
| 937 |
|
| 938 |
if(((unsigned)s->qscale) > max_qp){ |
| 939 |
if(s->qscale<0) s->qscale+= max_qp+1; |
| 940 |
else s->qscale-= max_qp+1; |
| 941 |
if(((unsigned)s->qscale) > max_qp){ |
| 942 |
av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
|
| 943 |
return -1; |
| 944 |
} |
| 945 |
} |
| 946 |
|
| 947 |
h->chroma_qp[0]= get_chroma_qp(h, 0, s->qscale); |
| 948 |
h->chroma_qp[1]= get_chroma_qp(h, 1, s->qscale); |
| 949 |
if(IS_INTRA16x16(mb_type)){
|
| 950 |
AV_ZERO128(h->mb_luma_dc+0);
|
| 951 |
AV_ZERO128(h->mb_luma_dc+8);
|
| 952 |
AV_ZERO128(h->mb_luma_dc+16);
|
| 953 |
AV_ZERO128(h->mb_luma_dc+24);
|
| 954 |
if( decode_residual(h, h->intra_gb_ptr, h->mb_luma_dc, LUMA_DC_BLOCK_INDEX, scan, h->dequant4_coeff[0][s->qscale], 16) < 0){ |
| 955 |
return -1; //FIXME continue if partitioned and other return -1 too |
| 956 |
} |
| 957 |
|
| 958 |
assert((cbp&15) == 0 || (cbp&15) == 15); |
| 959 |
|
| 960 |
if(cbp&15){ |
| 961 |
for(i8x8=0; i8x8<4; i8x8++){ |
| 962 |
for(i4x4=0; i4x4<4; i4x4++){ |
| 963 |
const int index= i4x4 + 4*i8x8; |
| 964 |
if( decode_residual(h, h->intra_gb_ptr, h->mb + (16*index<<h->pixel_shift), index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){ |
| 965 |
return -1; |
| 966 |
} |
| 967 |
} |
| 968 |
} |
| 969 |
}else{
|
| 970 |
fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1); |
| 971 |
} |
| 972 |
}else{
|
| 973 |
for(i8x8=0; i8x8<4; i8x8++){ |
| 974 |
if(cbp & (1<<i8x8)){ |
| 975 |
if(IS_8x8DCT(mb_type)){
|
| 976 |
DCTELEM *buf = &h->mb[64*i8x8<<h->pixel_shift];
|
| 977 |
uint8_t *nnz; |
| 978 |
for(i4x4=0; i4x4<4; i4x4++){ |
| 979 |
if( decode_residual(h, gb, buf, i4x4+4*i8x8, scan8x8+16*i4x4, |
| 980 |
h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 ) |
| 981 |
return -1; |
| 982 |
} |
| 983 |
nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
|
| 984 |
nnz[0] += nnz[1] + nnz[8] + nnz[9]; |
| 985 |
}else{
|
| 986 |
for(i4x4=0; i4x4<4; i4x4++){ |
| 987 |
const int index= i4x4 + 4*i8x8; |
| 988 |
|
| 989 |
if( decode_residual(h, gb, h->mb + (16*index<<h->pixel_shift), index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){ |
| 990 |
return -1; |
| 991 |
} |
| 992 |
} |
| 993 |
} |
| 994 |
}else{
|
| 995 |
uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ]; |
| 996 |
nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0; |
| 997 |
} |
| 998 |
} |
| 999 |
} |
| 1000 |
|
| 1001 |
if(cbp&0x30){ |
| 1002 |
for(chroma_idx=0; chroma_idx<2; chroma_idx++) |
| 1003 |
if( decode_residual(h, gb, h->mb + ((256 + 16*4*chroma_idx)<<h->pixel_shift), CHROMA_DC_BLOCK_INDEX+chroma_idx, chroma_dc_scan, NULL, 4) < 0){ |
| 1004 |
return -1; |
| 1005 |
} |
| 1006 |
} |
| 1007 |
|
| 1008 |
if(cbp&0x20){ |
| 1009 |
for(chroma_idx=0; chroma_idx<2; chroma_idx++){ |
| 1010 |
const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]]; |
| 1011 |
for(i4x4=0; i4x4<4; i4x4++){ |
| 1012 |
const int index= 16 + 4*chroma_idx + i4x4; |
| 1013 |
if( decode_residual(h, gb, h->mb + (16*index<<h->pixel_shift), index, scan + 1, qmul, 15) < 0){ |
| 1014 |
return -1; |
| 1015 |
} |
| 1016 |
} |
| 1017 |
} |
| 1018 |
}else{
|
| 1019 |
uint8_t * const nnz= &h->non_zero_count_cache[0]; |
| 1020 |
nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = |
| 1021 |
nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; |
| 1022 |
} |
| 1023 |
}else{
|
| 1024 |
uint8_t * const nnz= &h->non_zero_count_cache[0]; |
| 1025 |
fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1); |
| 1026 |
nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = |
| 1027 |
nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; |
| 1028 |
} |
| 1029 |
s->current_picture.qscale_table[mb_xy]= s->qscale; |
| 1030 |
write_back_non_zero_count(h); |
| 1031 |
|
| 1032 |
if(MB_MBAFF){
|
| 1033 |
h->ref_count[0] >>= 1; |
| 1034 |
h->ref_count[1] >>= 1; |
| 1035 |
} |
| 1036 |
|
| 1037 |
return 0; |
| 1038 |
} |
| 1039 |
|