| /* |
| * H.26L/H.264/AVC/JVT/14496-10/... cavlc bitstream decoding |
| * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * 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 |
| * H.264 / AVC / MPEG-4 part10 cavlc bitstream decoding. |
| * @author Michael Niedermayer <michaelni@gmx.at> |
| */ |
| |
| #define CABAC(h) 0 |
| #define UNCHECKED_BITSTREAM_READER 1 |
| |
| #include "internal.h" |
| #include "avcodec.h" |
| #include "h264dec.h" |
| #include "h264_mvpred.h" |
| #include "h264data.h" |
| #include "golomb.h" |
| #include "mpegutils.h" |
| #include "libavutil/avassert.h" |
| |
| |
| static const uint8_t golomb_to_inter_cbp_gray[16]={ |
| 0, 1, 2, 4, 8, 3, 5,10,12,15, 7,11,13,14, 6, 9, |
| }; |
| |
| static const uint8_t golomb_to_intra4x4_cbp_gray[16]={ |
| 15, 0, 7,11,13,14, 3, 5,10,12, 1, 2, 4, 8, 6, 9, |
| }; |
| |
| static const uint8_t chroma_dc_coeff_token_len[4*5]={ |
| 2, 0, 0, 0, |
| 6, 1, 0, 0, |
| 6, 6, 3, 0, |
| 6, 7, 7, 6, |
| 6, 8, 8, 7, |
| }; |
| |
| static const uint8_t chroma_dc_coeff_token_bits[4*5]={ |
| 1, 0, 0, 0, |
| 7, 1, 0, 0, |
| 4, 6, 1, 0, |
| 3, 3, 2, 5, |
| 2, 3, 2, 0, |
| }; |
| |
| static const uint8_t chroma422_dc_coeff_token_len[4*9]={ |
| 1, 0, 0, 0, |
| 7, 2, 0, 0, |
| 7, 7, 3, 0, |
| 9, 7, 7, 5, |
| 9, 9, 7, 6, |
| 10, 10, 9, 7, |
| 11, 11, 10, 7, |
| 12, 12, 11, 10, |
| 13, 12, 12, 11, |
| }; |
| |
| static const uint8_t chroma422_dc_coeff_token_bits[4*9]={ |
| 1, 0, 0, 0, |
| 15, 1, 0, 0, |
| 14, 13, 1, 0, |
| 7, 12, 11, 1, |
| 6, 5, 10, 1, |
| 7, 6, 4, 9, |
| 7, 6, 5, 8, |
| 7, 6, 5, 4, |
| 7, 5, 4, 4, |
| }; |
| |
| static const uint8_t coeff_token_len[4][4*17]={ |
| { |
| 1, 0, 0, 0, |
| 6, 2, 0, 0, 8, 6, 3, 0, 9, 8, 7, 5, 10, 9, 8, 6, |
| 11,10, 9, 7, 13,11,10, 8, 13,13,11, 9, 13,13,13,10, |
| 14,14,13,11, 14,14,14,13, 15,15,14,14, 15,15,15,14, |
| 16,15,15,15, 16,16,16,15, 16,16,16,16, 16,16,16,16, |
| }, |
| { |
| 2, 0, 0, 0, |
| 6, 2, 0, 0, 6, 5, 3, 0, 7, 6, 6, 4, 8, 6, 6, 4, |
| 8, 7, 7, 5, 9, 8, 8, 6, 11, 9, 9, 6, 11,11,11, 7, |
| 12,11,11, 9, 12,12,12,11, 12,12,12,11, 13,13,13,12, |
| 13,13,13,13, 13,14,13,13, 14,14,14,13, 14,14,14,14, |
| }, |
| { |
| 4, 0, 0, 0, |
| 6, 4, 0, 0, 6, 5, 4, 0, 6, 5, 5, 4, 7, 5, 5, 4, |
| 7, 5, 5, 4, 7, 6, 6, 4, 7, 6, 6, 4, 8, 7, 7, 5, |
| 8, 8, 7, 6, 9, 8, 8, 7, 9, 9, 8, 8, 9, 9, 9, 8, |
| 10, 9, 9, 9, 10,10,10,10, 10,10,10,10, 10,10,10,10, |
| }, |
| { |
| 6, 0, 0, 0, |
| 6, 6, 0, 0, 6, 6, 6, 0, 6, 6, 6, 6, 6, 6, 6, 6, |
| 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| } |
| }; |
| |
| static const uint8_t coeff_token_bits[4][4*17]={ |
| { |
| 1, 0, 0, 0, |
| 5, 1, 0, 0, 7, 4, 1, 0, 7, 6, 5, 3, 7, 6, 5, 3, |
| 7, 6, 5, 4, 15, 6, 5, 4, 11,14, 5, 4, 8,10,13, 4, |
| 15,14, 9, 4, 11,10,13,12, 15,14, 9,12, 11,10,13, 8, |
| 15, 1, 9,12, 11,14,13, 8, 7,10, 9,12, 4, 6, 5, 8, |
| }, |
| { |
| 3, 0, 0, 0, |
| 11, 2, 0, 0, 7, 7, 3, 0, 7,10, 9, 5, 7, 6, 5, 4, |
| 4, 6, 5, 6, 7, 6, 5, 8, 15, 6, 5, 4, 11,14,13, 4, |
| 15,10, 9, 4, 11,14,13,12, 8,10, 9, 8, 15,14,13,12, |
| 11,10, 9,12, 7,11, 6, 8, 9, 8,10, 1, 7, 6, 5, 4, |
| }, |
| { |
| 15, 0, 0, 0, |
| 15,14, 0, 0, 11,15,13, 0, 8,12,14,12, 15,10,11,11, |
| 11, 8, 9,10, 9,14,13, 9, 8,10, 9, 8, 15,14,13,13, |
| 11,14,10,12, 15,10,13,12, 11,14, 9,12, 8,10,13, 8, |
| 13, 7, 9,12, 9,12,11,10, 5, 8, 7, 6, 1, 4, 3, 2, |
| }, |
| { |
| 3, 0, 0, 0, |
| 0, 1, 0, 0, 4, 5, 6, 0, 8, 9,10,11, 12,13,14,15, |
| 16,17,18,19, 20,21,22,23, 24,25,26,27, 28,29,30,31, |
| 32,33,34,35, 36,37,38,39, 40,41,42,43, 44,45,46,47, |
| 48,49,50,51, 52,53,54,55, 56,57,58,59, 60,61,62,63, |
| } |
| }; |
| |
| static const uint8_t total_zeros_len[16][16]= { |
| {1,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9}, |
| {3,3,3,3,3,4,4,4,4,5,5,6,6,6,6}, |
| {4,3,3,3,4,4,3,3,4,5,5,6,5,6}, |
| {5,3,4,4,3,3,3,4,3,4,5,5,5}, |
| {4,4,4,3,3,3,3,3,4,5,4,5}, |
| {6,5,3,3,3,3,3,3,4,3,6}, |
| {6,5,3,3,3,2,3,4,3,6}, |
| {6,4,5,3,2,2,3,3,6}, |
| {6,6,4,2,2,3,2,5}, |
| {5,5,3,2,2,2,4}, |
| {4,4,3,3,1,3}, |
| {4,4,2,1,3}, |
| {3,3,1,2}, |
| {2,2,1}, |
| {1,1}, |
| }; |
| |
| static const uint8_t total_zeros_bits[16][16]= { |
| {1,3,2,3,2,3,2,3,2,3,2,3,2,3,2,1}, |
| {7,6,5,4,3,5,4,3,2,3,2,3,2,1,0}, |
| {5,7,6,5,4,3,4,3,2,3,2,1,1,0}, |
| {3,7,5,4,6,5,4,3,3,2,2,1,0}, |
| {5,4,3,7,6,5,4,3,2,1,1,0}, |
| {1,1,7,6,5,4,3,2,1,1,0}, |
| {1,1,5,4,3,3,2,1,1,0}, |
| {1,1,1,3,3,2,2,1,0}, |
| {1,0,1,3,2,1,1,1}, |
| {1,0,1,3,2,1,1}, |
| {0,1,1,2,1,3}, |
| {0,1,1,1,1}, |
| {0,1,1,1}, |
| {0,1,1}, |
| {0,1}, |
| }; |
| |
| static const uint8_t chroma_dc_total_zeros_len[3][4]= { |
| { 1, 2, 3, 3,}, |
| { 1, 2, 2, 0,}, |
| { 1, 1, 0, 0,}, |
| }; |
| |
| static const uint8_t chroma_dc_total_zeros_bits[3][4]= { |
| { 1, 1, 1, 0,}, |
| { 1, 1, 0, 0,}, |
| { 1, 0, 0, 0,}, |
| }; |
| |
| static const uint8_t chroma422_dc_total_zeros_len[7][8]= { |
| { 1, 3, 3, 4, 4, 4, 5, 5 }, |
| { 3, 2, 3, 3, 3, 3, 3 }, |
| { 3, 3, 2, 2, 3, 3 }, |
| { 3, 2, 2, 2, 3 }, |
| { 2, 2, 2, 2 }, |
| { 2, 2, 1 }, |
| { 1, 1 }, |
| }; |
| |
| static const uint8_t chroma422_dc_total_zeros_bits[7][8]= { |
| { 1, 2, 3, 2, 3, 1, 1, 0 }, |
| { 0, 1, 1, 4, 5, 6, 7 }, |
| { 0, 1, 1, 2, 6, 7 }, |
| { 6, 0, 1, 2, 7 }, |
| { 0, 1, 2, 3 }, |
| { 0, 1, 1 }, |
| { 0, 1 }, |
| }; |
| |
| static const uint8_t run_len[7][16]={ |
| {1,1}, |
| {1,2,2}, |
| {2,2,2,2}, |
| {2,2,2,3,3}, |
| {2,2,3,3,3,3}, |
| {2,3,3,3,3,3,3}, |
| {3,3,3,3,3,3,3,4,5,6,7,8,9,10,11}, |
| }; |
| |
| static const uint8_t run_bits[7][16]={ |
| {1,0}, |
| {1,1,0}, |
| {3,2,1,0}, |
| {3,2,1,1,0}, |
| {3,2,3,2,1,0}, |
| {3,0,1,3,2,5,4}, |
| {7,6,5,4,3,2,1,1,1,1,1,1,1,1,1}, |
| }; |
| |
| static VLC coeff_token_vlc[4]; |
| static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2]; |
| static const int coeff_token_vlc_tables_size[4]={520,332,280,256}; |
| |
| static VLC chroma_dc_coeff_token_vlc; |
| static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2]; |
| static const int chroma_dc_coeff_token_vlc_table_size = 256; |
| |
| static VLC chroma422_dc_coeff_token_vlc; |
| static VLC_TYPE chroma422_dc_coeff_token_vlc_table[8192][2]; |
| static const int chroma422_dc_coeff_token_vlc_table_size = 8192; |
| |
| static VLC total_zeros_vlc[15+1]; |
| static VLC_TYPE total_zeros_vlc_tables[15][512][2]; |
| static const int total_zeros_vlc_tables_size = 512; |
| |
| static VLC chroma_dc_total_zeros_vlc[3+1]; |
| static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2]; |
| static const int chroma_dc_total_zeros_vlc_tables_size = 8; |
| |
| static VLC chroma422_dc_total_zeros_vlc[7+1]; |
| static VLC_TYPE chroma422_dc_total_zeros_vlc_tables[7][32][2]; |
| static const int chroma422_dc_total_zeros_vlc_tables_size = 32; |
| |
| static VLC run_vlc[6+1]; |
| static VLC_TYPE run_vlc_tables[6][8][2]; |
| static const int run_vlc_tables_size = 8; |
| |
| static VLC run7_vlc; |
| static VLC_TYPE run7_vlc_table[96][2]; |
| static const int run7_vlc_table_size = 96; |
| |
| #define LEVEL_TAB_BITS 8 |
| static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2]; |
| |
| #define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8 |
| #define CHROMA422_DC_COEFF_TOKEN_VLC_BITS 13 |
| #define COEFF_TOKEN_VLC_BITS 8 |
| #define TOTAL_ZEROS_VLC_BITS 9 |
| #define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3 |
| #define CHROMA422_DC_TOTAL_ZEROS_VLC_BITS 5 |
| #define RUN_VLC_BITS 3 |
| #define RUN7_VLC_BITS 6 |
| |
| /** |
| * Get the predicted number of non-zero coefficients. |
| * @param n block index |
| */ |
| static inline int pred_non_zero_count(const H264Context *h, H264SliceContext *sl, int n) |
| { |
| const int index8= scan8[n]; |
| const int left = sl->non_zero_count_cache[index8 - 1]; |
| const int top = sl->non_zero_count_cache[index8 - 8]; |
| int i= left + top; |
| |
| if(i<64) i= (i+1)>>1; |
| |
| ff_tlog(h->avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31); |
| |
| return i&31; |
| } |
| |
| static av_cold void init_cavlc_level_tab(void){ |
| int suffix_length; |
| unsigned int i; |
| |
| for(suffix_length=0; suffix_length<7; suffix_length++){ |
| for(i=0; i<(1<<LEVEL_TAB_BITS); i++){ |
| int prefix= LEVEL_TAB_BITS - av_log2(2*i); |
| |
| if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){ |
| int level_code = (prefix << suffix_length) + |
| (i >> (av_log2(i) - suffix_length)) - (1 << suffix_length); |
| int mask = -(level_code&1); |
| level_code = (((2 + level_code) >> 1) ^ mask) - mask; |
| cavlc_level_tab[suffix_length][i][0]= level_code; |
| cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length; |
| }else if(prefix + 1 <= LEVEL_TAB_BITS){ |
| cavlc_level_tab[suffix_length][i][0]= prefix+100; |
| cavlc_level_tab[suffix_length][i][1]= prefix + 1; |
| }else{ |
| cavlc_level_tab[suffix_length][i][0]= LEVEL_TAB_BITS+100; |
| cavlc_level_tab[suffix_length][i][1]= LEVEL_TAB_BITS; |
| } |
| } |
| } |
| } |
| |
| av_cold void ff_h264_decode_init_vlc(void){ |
| static int done = 0; |
| |
| if (!done) { |
| int i; |
| int offset; |
| done = 1; |
| |
| chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table; |
| chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size; |
| init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5, |
| &chroma_dc_coeff_token_len [0], 1, 1, |
| &chroma_dc_coeff_token_bits[0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| |
| chroma422_dc_coeff_token_vlc.table = chroma422_dc_coeff_token_vlc_table; |
| chroma422_dc_coeff_token_vlc.table_allocated = chroma422_dc_coeff_token_vlc_table_size; |
| init_vlc(&chroma422_dc_coeff_token_vlc, CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 4*9, |
| &chroma422_dc_coeff_token_len [0], 1, 1, |
| &chroma422_dc_coeff_token_bits[0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| |
| offset = 0; |
| for(i=0; i<4; i++){ |
| coeff_token_vlc[i].table = coeff_token_vlc_tables+offset; |
| coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i]; |
| init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17, |
| &coeff_token_len [i][0], 1, 1, |
| &coeff_token_bits[i][0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| offset += coeff_token_vlc_tables_size[i]; |
| } |
| /* |
| * This is a one time safety check to make sure that |
| * the packed static coeff_token_vlc table sizes |
| * were initialized correctly. |
| */ |
| av_assert0(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables)); |
| |
| for(i=0; i<3; i++){ |
| chroma_dc_total_zeros_vlc[i+1].table = chroma_dc_total_zeros_vlc_tables[i]; |
| chroma_dc_total_zeros_vlc[i+1].table_allocated = chroma_dc_total_zeros_vlc_tables_size; |
| init_vlc(&chroma_dc_total_zeros_vlc[i+1], |
| CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4, |
| &chroma_dc_total_zeros_len [i][0], 1, 1, |
| &chroma_dc_total_zeros_bits[i][0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| } |
| |
| for(i=0; i<7; i++){ |
| chroma422_dc_total_zeros_vlc[i+1].table = chroma422_dc_total_zeros_vlc_tables[i]; |
| chroma422_dc_total_zeros_vlc[i+1].table_allocated = chroma422_dc_total_zeros_vlc_tables_size; |
| init_vlc(&chroma422_dc_total_zeros_vlc[i+1], |
| CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 8, |
| &chroma422_dc_total_zeros_len [i][0], 1, 1, |
| &chroma422_dc_total_zeros_bits[i][0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| } |
| |
| for(i=0; i<15; i++){ |
| total_zeros_vlc[i+1].table = total_zeros_vlc_tables[i]; |
| total_zeros_vlc[i+1].table_allocated = total_zeros_vlc_tables_size; |
| init_vlc(&total_zeros_vlc[i+1], |
| TOTAL_ZEROS_VLC_BITS, 16, |
| &total_zeros_len [i][0], 1, 1, |
| &total_zeros_bits[i][0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| } |
| |
| for(i=0; i<6; i++){ |
| run_vlc[i+1].table = run_vlc_tables[i]; |
| run_vlc[i+1].table_allocated = run_vlc_tables_size; |
| init_vlc(&run_vlc[i+1], |
| RUN_VLC_BITS, 7, |
| &run_len [i][0], 1, 1, |
| &run_bits[i][0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| } |
| run7_vlc.table = run7_vlc_table, |
| run7_vlc.table_allocated = run7_vlc_table_size; |
| init_vlc(&run7_vlc, RUN7_VLC_BITS, 16, |
| &run_len [6][0], 1, 1, |
| &run_bits[6][0], 1, 1, |
| INIT_VLC_USE_NEW_STATIC); |
| |
| init_cavlc_level_tab(); |
| } |
| } |
| |
| static inline int get_level_prefix(GetBitContext *gb){ |
| unsigned int buf; |
| int log; |
| |
| OPEN_READER(re, gb); |
| UPDATE_CACHE(re, gb); |
| buf=GET_CACHE(re, gb); |
| |
| log= 32 - av_log2(buf); |
| |
| LAST_SKIP_BITS(re, gb, log); |
| CLOSE_READER(re, gb); |
| |
| return log-1; |
| } |
| |
| /** |
| * Decode a residual block. |
| * @param n block index |
| * @param scantable scantable |
| * @param max_coeff number of coefficients in the block |
| * @return <0 if an error occurred |
| */ |
| static int decode_residual(const H264Context *h, H264SliceContext *sl, |
| GetBitContext *gb, int16_t *block, int n, |
| const uint8_t *scantable, const uint32_t *qmul, |
| int max_coeff) |
| { |
| 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}; |
| int level[16]; |
| int zeros_left, coeff_token, total_coeff, i, trailing_ones, run_before; |
| |
| //FIXME put trailing_onex into the context |
| |
| if(max_coeff <= 8){ |
| if (max_coeff == 4) |
| coeff_token = get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1); |
| else |
| coeff_token = get_vlc2(gb, chroma422_dc_coeff_token_vlc.table, CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 1); |
| total_coeff= coeff_token>>2; |
| }else{ |
| if(n >= LUMA_DC_BLOCK_INDEX){ |
| total_coeff= pred_non_zero_count(h, sl, (n - LUMA_DC_BLOCK_INDEX)*16); |
| coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2); |
| total_coeff= coeff_token>>2; |
| }else{ |
| total_coeff= pred_non_zero_count(h, sl, n); |
| coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2); |
| total_coeff= coeff_token>>2; |
| } |
| } |
| sl->non_zero_count_cache[scan8[n]] = total_coeff; |
| |
| //FIXME set last_non_zero? |
| |
| if(total_coeff==0) |
| return 0; |
| if(total_coeff > (unsigned)max_coeff) { |
| av_log(h->avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", sl->mb_x, sl->mb_y, total_coeff); |
| return -1; |
| } |
| |
| trailing_ones= coeff_token&3; |
| ff_tlog(h->avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff); |
| av_assert2(total_coeff<=16); |
| |
| i = show_bits(gb, 3); |
| skip_bits(gb, trailing_ones); |
| level[0] = 1-((i&4)>>1); |
| level[1] = 1-((i&2) ); |
| level[2] = 1-((i&1)<<1); |
| |
| if(trailing_ones<total_coeff) { |
| int mask, prefix; |
| int suffix_length = total_coeff > 10 & trailing_ones < 3; |
| int bitsi= show_bits(gb, LEVEL_TAB_BITS); |
| int level_code= cavlc_level_tab[suffix_length][bitsi][0]; |
| |
| skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]); |
| if(level_code >= 100){ |
| prefix= level_code - 100; |
| if(prefix == LEVEL_TAB_BITS) |
| prefix += get_level_prefix(gb); |
| |
| //first coefficient has suffix_length equal to 0 or 1 |
| if(prefix<14){ //FIXME try to build a large unified VLC table for all this |
| if(suffix_length) |
| level_code= (prefix<<1) + get_bits1(gb); //part |
| else |
| level_code= prefix; //part |
| }else if(prefix==14){ |
| if(suffix_length) |
| level_code= (prefix<<1) + get_bits1(gb); //part |
| else |
| level_code= prefix + get_bits(gb, 4); //part |
| }else{ |
| level_code= 30; |
| if(prefix>=16){ |
| if(prefix > 25+3){ |
| av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n"); |
| return -1; |
| } |
| level_code += (1<<(prefix-3))-4096; |
| } |
| level_code += get_bits(gb, prefix-3); //part |
| } |
| |
| if(trailing_ones < 3) level_code += 2; |
| |
| suffix_length = 2; |
| mask= -(level_code&1); |
| level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask; |
| }else{ |
| level_code += ((level_code>>31)|1) & -(trailing_ones < 3); |
| |
| suffix_length = 1 + (level_code + 3U > 6U); |
| level[trailing_ones]= level_code; |
| } |
| |
| //remaining coefficients have suffix_length > 0 |
| for(i=trailing_ones+1;i<total_coeff;i++) { |
| static const unsigned int suffix_limit[7] = {0,3,6,12,24,48,INT_MAX }; |
| int bitsi= show_bits(gb, LEVEL_TAB_BITS); |
| level_code= cavlc_level_tab[suffix_length][bitsi][0]; |
| |
| skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]); |
| if(level_code >= 100){ |
| prefix= level_code - 100; |
| if(prefix == LEVEL_TAB_BITS){ |
| prefix += get_level_prefix(gb); |
| } |
| if(prefix<15){ |
| level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length); |
| }else{ |
| level_code = 15<<suffix_length; |
| if (prefix>=16) { |
| if(prefix > 25+3){ |
| av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| level_code += (1<<(prefix-3))-4096; |
| } |
| level_code += get_bits(gb, prefix-3); |
| } |
| mask= -(level_code&1); |
| level_code= (((2+level_code)>>1) ^ mask) - mask; |
| } |
| level[i]= level_code; |
| suffix_length+= suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length]; |
| } |
| } |
| |
| if(total_coeff == max_coeff) |
| zeros_left=0; |
| else{ |
| if (max_coeff <= 8) { |
| if (max_coeff == 4) |
| zeros_left = get_vlc2(gb, chroma_dc_total_zeros_vlc[total_coeff].table, |
| CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1); |
| else |
| zeros_left = get_vlc2(gb, chroma422_dc_total_zeros_vlc[total_coeff].table, |
| CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 1); |
| } else { |
| zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff ].table, TOTAL_ZEROS_VLC_BITS, 1); |
| } |
| } |
| |
| #define STORE_BLOCK(type) \ |
| scantable += zeros_left + total_coeff - 1; \ |
| if(n >= LUMA_DC_BLOCK_INDEX){ \ |
| ((type*)block)[*scantable] = level[0]; \ |
| for(i=1;i<total_coeff && zeros_left > 0;i++) { \ |
| if(zeros_left < 7) \ |
| run_before= get_vlc2(gb, run_vlc[zeros_left].table, RUN_VLC_BITS, 1); \ |
| else \ |
| run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \ |
| zeros_left -= run_before; \ |
| scantable -= 1 + run_before; \ |
| ((type*)block)[*scantable]= level[i]; \ |
| } \ |
| for(;i<total_coeff;i++) { \ |
| scantable--; \ |
| ((type*)block)[*scantable]= level[i]; \ |
| } \ |
| }else{ \ |
| ((type*)block)[*scantable] = ((int)(level[0] * qmul[*scantable] + 32))>>6; \ |
| for(i=1;i<total_coeff && zeros_left > 0;i++) { \ |
| if(zeros_left < 7) \ |
| run_before= get_vlc2(gb, run_vlc[zeros_left].table, RUN_VLC_BITS, 1); \ |
| else \ |
| run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \ |
| zeros_left -= run_before; \ |
| scantable -= 1 + run_before; \ |
| ((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \ |
| } \ |
| for(;i<total_coeff;i++) { \ |
| scantable--; \ |
| ((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \ |
| } \ |
| } |
| |
| if (h->pixel_shift) { |
| STORE_BLOCK(int32_t) |
| } else { |
| STORE_BLOCK(int16_t) |
| } |
| |
| if(zeros_left<0){ |
| av_log(h->avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static av_always_inline |
| int decode_luma_residual(const H264Context *h, H264SliceContext *sl, |
| GetBitContext *gb, const uint8_t *scan, |
| const uint8_t *scan8x8, int pixel_shift, |
| int mb_type, int cbp, int p) |
| { |
| int i4x4, i8x8; |
| int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1]; |
| if(IS_INTRA16x16(mb_type)){ |
| AV_ZERO128(sl->mb_luma_dc[p]+0); |
| AV_ZERO128(sl->mb_luma_dc[p]+8); |
| AV_ZERO128(sl->mb_luma_dc[p]+16); |
| AV_ZERO128(sl->mb_luma_dc[p]+24); |
| if (decode_residual(h, sl, gb, sl->mb_luma_dc[p], LUMA_DC_BLOCK_INDEX + p, scan, NULL, 16) < 0) { |
| return -1; //FIXME continue if partitioned and other return -1 too |
| } |
| |
| av_assert2((cbp&15) == 0 || (cbp&15) == 15); |
| |
| if(cbp&15){ |
| for(i8x8=0; i8x8<4; i8x8++){ |
| for(i4x4=0; i4x4<4; i4x4++){ |
| const int index= i4x4 + 4*i8x8 + p*16; |
| if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift), |
| index, scan + 1, h->ps.pps->dequant4_coeff[p][qscale], 15) < 0 ){ |
| return -1; |
| } |
| } |
| } |
| return 0xf; |
| }else{ |
| fill_rectangle(&sl->non_zero_count_cache[scan8[p*16]], 4, 4, 8, 0, 1); |
| return 0; |
| } |
| }else{ |
| int cqm = (IS_INTRA( mb_type ) ? 0:3)+p; |
| /* For CAVLC 4:4:4, we need to keep track of the luma 8x8 CBP for deblocking nnz purposes. */ |
| int new_cbp = 0; |
| for(i8x8=0; i8x8<4; i8x8++){ |
| if(cbp & (1<<i8x8)){ |
| if(IS_8x8DCT(mb_type)){ |
| int16_t *buf = &sl->mb[64*i8x8+256*p << pixel_shift]; |
| uint8_t *nnz; |
| for(i4x4=0; i4x4<4; i4x4++){ |
| const int index= i4x4 + 4*i8x8 + p*16; |
| if( decode_residual(h, sl, gb, buf, index, scan8x8+16*i4x4, |
| h->ps.pps->dequant8_coeff[cqm][qscale], 16) < 0 ) |
| return -1; |
| } |
| nnz = &sl->non_zero_count_cache[scan8[4 * i8x8 + p * 16]]; |
| nnz[0] += nnz[1] + nnz[8] + nnz[9]; |
| new_cbp |= !!nnz[0] << i8x8; |
| }else{ |
| for(i4x4=0; i4x4<4; i4x4++){ |
| const int index= i4x4 + 4*i8x8 + p*16; |
| if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift), index, |
| scan, h->ps.pps->dequant4_coeff[cqm][qscale], 16) < 0 ){ |
| return -1; |
| } |
| new_cbp |= sl->non_zero_count_cache[scan8[index]] << i8x8; |
| } |
| } |
| }else{ |
| uint8_t * const nnz = &sl->non_zero_count_cache[scan8[4 * i8x8 + p * 16]]; |
| nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0; |
| } |
| } |
| return new_cbp; |
| } |
| } |
| |
| int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl) |
| { |
| int mb_xy; |
| int partition_count; |
| unsigned int mb_type, cbp; |
| int dct8x8_allowed = h->ps.pps->transform_8x8_mode; |
| const int decode_chroma = h->ps.sps->chroma_format_idc == 1 || h->ps.sps->chroma_format_idc == 2; |
| const int pixel_shift = h->pixel_shift; |
| |
| mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride; |
| |
| ff_tlog(h->avctx, "pic:%d mb:%d/%d\n", h->poc.frame_num, sl->mb_x, sl->mb_y); |
| cbp = 0; /* avoid warning. FIXME: find a solution without slowing |
| down the code */ |
| if (sl->slice_type_nos != AV_PICTURE_TYPE_I) { |
| if (sl->mb_skip_run == -1) |
| sl->mb_skip_run = get_ue_golomb_long(&sl->gb); |
| |
| if (sl->mb_skip_run--) { |
| if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 0) { |
| if (sl->mb_skip_run == 0) |
| sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb); |
| } |
| decode_mb_skip(h, sl); |
| return 0; |
| } |
| } |
| if (FRAME_MBAFF(h)) { |
| if ((sl->mb_y & 1) == 0) |
| sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb); |
| } |
| |
| sl->prev_mb_skipped = 0; |
| |
| mb_type= get_ue_golomb(&sl->gb); |
| if (sl->slice_type_nos == AV_PICTURE_TYPE_B) { |
| if(mb_type < 23){ |
| partition_count = ff_h264_b_mb_type_info[mb_type].partition_count; |
| mb_type = ff_h264_b_mb_type_info[mb_type].type; |
| }else{ |
| mb_type -= 23; |
| goto decode_intra_mb; |
| } |
| } else if (sl->slice_type_nos == AV_PICTURE_TYPE_P) { |
| if(mb_type < 5){ |
| partition_count = ff_h264_p_mb_type_info[mb_type].partition_count; |
| mb_type = ff_h264_p_mb_type_info[mb_type].type; |
| }else{ |
| mb_type -= 5; |
| goto decode_intra_mb; |
| } |
| }else{ |
| av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_I); |
| if (sl->slice_type == AV_PICTURE_TYPE_SI && mb_type) |
| mb_type--; |
| decode_intra_mb: |
| if(mb_type > 25){ |
| av_log(h->avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(sl->slice_type), sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| partition_count=0; |
| cbp = ff_h264_i_mb_type_info[mb_type].cbp; |
| sl->intra16x16_pred_mode = ff_h264_i_mb_type_info[mb_type].pred_mode; |
| mb_type = ff_h264_i_mb_type_info[mb_type].type; |
| } |
| |
| if (MB_FIELD(sl)) |
| mb_type |= MB_TYPE_INTERLACED; |
| |
| h->slice_table[mb_xy] = sl->slice_num; |
| |
| if(IS_INTRA_PCM(mb_type)){ |
| const int mb_size = ff_h264_mb_sizes[h->ps.sps->chroma_format_idc] * |
| h->ps.sps->bit_depth_luma; |
| |
| // We assume these blocks are very rare so we do not optimize it. |
| sl->intra_pcm_ptr = align_get_bits(&sl->gb); |
| if (get_bits_left(&sl->gb) < mb_size) { |
| av_log(h->avctx, AV_LOG_ERROR, "Not enough data for an intra PCM block.\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| skip_bits_long(&sl->gb, mb_size); |
| |
| // In deblocking, the quantizer is 0 |
| h->cur_pic.qscale_table[mb_xy] = 0; |
| // All coeffs are present |
| memset(h->non_zero_count[mb_xy], 16, 48); |
| |
| h->cur_pic.mb_type[mb_xy] = mb_type; |
| return 0; |
| } |
| |
| fill_decode_neighbors(h, sl, mb_type); |
| fill_decode_caches(h, sl, mb_type); |
| |
| //mb_pred |
| if(IS_INTRA(mb_type)){ |
| int pred_mode; |
| // init_top_left_availability(h); |
| if(IS_INTRA4x4(mb_type)){ |
| int i; |
| int di = 1; |
| if(dct8x8_allowed && get_bits1(&sl->gb)){ |
| mb_type |= MB_TYPE_8x8DCT; |
| di = 4; |
| } |
| |
| // fill_intra4x4_pred_table(h); |
| for(i=0; i<16; i+=di){ |
| int mode = pred_intra_mode(h, sl, i); |
| |
| if(!get_bits1(&sl->gb)){ |
| const int rem_mode= get_bits(&sl->gb, 3); |
| mode = rem_mode + (rem_mode >= mode); |
| } |
| |
| if(di==4) |
| fill_rectangle(&sl->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1); |
| else |
| sl->intra4x4_pred_mode_cache[scan8[i]] = mode; |
| } |
| write_back_intra_pred_mode(h, sl); |
| if (ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache, h->avctx, |
| sl->top_samples_available, sl->left_samples_available) < 0) |
| return -1; |
| }else{ |
| sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available, |
| sl->left_samples_available, sl->intra16x16_pred_mode, 0); |
| if (sl->intra16x16_pred_mode < 0) |
| return -1; |
| } |
| if(decode_chroma){ |
| pred_mode= ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available, |
| sl->left_samples_available, get_ue_golomb_31(&sl->gb), 1); |
| if(pred_mode < 0) |
| return -1; |
| sl->chroma_pred_mode = pred_mode; |
| } else { |
| sl->chroma_pred_mode = DC_128_PRED8x8; |
| } |
| }else if(partition_count==4){ |
| int i, j, sub_partition_count[4], list, ref[2][4]; |
| |
| if (sl->slice_type_nos == AV_PICTURE_TYPE_B) { |
| for(i=0; i<4; i++){ |
| sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb); |
| if(sl->sub_mb_type[i] >=13){ |
| av_log(h->avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| sub_partition_count[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].partition_count; |
| sl->sub_mb_type[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].type; |
| } |
| if( IS_DIRECT(sl->sub_mb_type[0]|sl->sub_mb_type[1]|sl->sub_mb_type[2]|sl->sub_mb_type[3])) { |
| ff_h264_pred_direct_motion(h, sl, &mb_type); |
| sl->ref_cache[0][scan8[4]] = |
| sl->ref_cache[1][scan8[4]] = |
| sl->ref_cache[0][scan8[12]] = |
| sl->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE; |
| } |
| }else{ |
| av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_P); //FIXME SP correct ? |
| for(i=0; i<4; i++){ |
| sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb); |
| if(sl->sub_mb_type[i] >=4){ |
| av_log(h->avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| sub_partition_count[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].partition_count; |
| sl->sub_mb_type[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].type; |
| } |
| } |
| |
| for (list = 0; list < sl->list_count; list++) { |
| int ref_count = IS_REF0(mb_type) ? 1 : sl->ref_count[list] << MB_MBAFF(sl); |
| for(i=0; i<4; i++){ |
| if(IS_DIRECT(sl->sub_mb_type[i])) continue; |
| if(IS_DIR(sl->sub_mb_type[i], 0, list)){ |
| unsigned int tmp; |
| if(ref_count == 1){ |
| tmp= 0; |
| }else if(ref_count == 2){ |
| tmp= get_bits1(&sl->gb)^1; |
| }else{ |
| tmp= get_ue_golomb_31(&sl->gb); |
| if(tmp>=ref_count){ |
| av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp); |
| return -1; |
| } |
| } |
| ref[list][i]= tmp; |
| }else{ |
| //FIXME |
| ref[list][i] = -1; |
| } |
| } |
| } |
| |
| if(dct8x8_allowed) |
| dct8x8_allowed = get_dct8x8_allowed(h, sl); |
| |
| for (list = 0; list < sl->list_count; list++) { |
| for(i=0; i<4; i++){ |
| if(IS_DIRECT(sl->sub_mb_type[i])) { |
| sl->ref_cache[list][ scan8[4*i] ] = sl->ref_cache[list][ scan8[4*i]+1 ]; |
| continue; |
| } |
| sl->ref_cache[list][ scan8[4*i] ]=sl->ref_cache[list][ scan8[4*i]+1 ]= |
| sl->ref_cache[list][ scan8[4*i]+8 ]=sl->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i]; |
| |
| if(IS_DIR(sl->sub_mb_type[i], 0, list)){ |
| const int sub_mb_type= sl->sub_mb_type[i]; |
| const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1; |
| for(j=0; j<sub_partition_count[i]; j++){ |
| int mx, my; |
| const int index= 4*i + block_width*j; |
| int16_t (* mv_cache)[2]= &sl->mv_cache[list][ scan8[index] ]; |
| pred_motion(h, sl, index, block_width, list, sl->ref_cache[list][ scan8[index] ], &mx, &my); |
| mx += get_se_golomb(&sl->gb); |
| my += get_se_golomb(&sl->gb); |
| ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| |
| if(IS_SUB_8X8(sub_mb_type)){ |
| mv_cache[ 1 ][0]= |
| mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx; |
| mv_cache[ 1 ][1]= |
| mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my; |
| }else if(IS_SUB_8X4(sub_mb_type)){ |
| mv_cache[ 1 ][0]= mx; |
| mv_cache[ 1 ][1]= my; |
| }else if(IS_SUB_4X8(sub_mb_type)){ |
| mv_cache[ 8 ][0]= mx; |
| mv_cache[ 8 ][1]= my; |
| } |
| mv_cache[ 0 ][0]= mx; |
| mv_cache[ 0 ][1]= my; |
| } |
| }else{ |
| uint32_t *p= (uint32_t *)&sl->mv_cache[list][ scan8[4*i] ][0]; |
| p[0] = p[1]= |
| p[8] = p[9]= 0; |
| } |
| } |
| } |
| }else if(IS_DIRECT(mb_type)){ |
| ff_h264_pred_direct_motion(h, sl, &mb_type); |
| dct8x8_allowed &= h->ps.sps->direct_8x8_inference_flag; |
| }else{ |
| int list, mx, my, i; |
| //FIXME we should set ref_idx_l? to 0 if we use that later ... |
| if(IS_16X16(mb_type)){ |
| for (list = 0; list < sl->list_count; list++) { |
| unsigned int val; |
| if(IS_DIR(mb_type, 0, list)){ |
| unsigned rc = sl->ref_count[list] << MB_MBAFF(sl); |
| if (rc == 1) { |
| val= 0; |
| } else if (rc == 2) { |
| val= get_bits1(&sl->gb)^1; |
| }else{ |
| val= get_ue_golomb_31(&sl->gb); |
| if (val >= rc) { |
| av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val); |
| return -1; |
| } |
| } |
| fill_rectangle(&sl->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1); |
| } |
| } |
| for (list = 0; list < sl->list_count; list++) { |
| if(IS_DIR(mb_type, 0, list)){ |
| pred_motion(h, sl, 0, 4, list, sl->ref_cache[list][ scan8[0] ], &mx, &my); |
| mx += get_se_golomb(&sl->gb); |
| my += get_se_golomb(&sl->gb); |
| ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| |
| fill_rectangle(sl->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4); |
| } |
| } |
| } |
| else if(IS_16X8(mb_type)){ |
| for (list = 0; list < sl->list_count; list++) { |
| for(i=0; i<2; i++){ |
| unsigned int val; |
| if(IS_DIR(mb_type, i, list)){ |
| unsigned rc = sl->ref_count[list] << MB_MBAFF(sl); |
| if (rc == 1) { |
| val= 0; |
| } else if (rc == 2) { |
| val= get_bits1(&sl->gb)^1; |
| }else{ |
| val= get_ue_golomb_31(&sl->gb); |
| if (val >= rc) { |
| av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val); |
| return -1; |
| } |
| } |
| }else |
| val= LIST_NOT_USED&0xFF; |
| fill_rectangle(&sl->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1); |
| } |
| } |
| for (list = 0; list < sl->list_count; list++) { |
| for(i=0; i<2; i++){ |
| unsigned int val; |
| if(IS_DIR(mb_type, i, list)){ |
| pred_16x8_motion(h, sl, 8*i, list, sl->ref_cache[list][scan8[0] + 16*i], &mx, &my); |
| mx += get_se_golomb(&sl->gb); |
| my += get_se_golomb(&sl->gb); |
| ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| |
| val= pack16to32(mx,my); |
| }else |
| val=0; |
| fill_rectangle(sl->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4); |
| } |
| } |
| }else{ |
| av_assert2(IS_8X16(mb_type)); |
| for (list = 0; list < sl->list_count; list++) { |
| for(i=0; i<2; i++){ |
| unsigned int val; |
| if(IS_DIR(mb_type, i, list)){ //FIXME optimize |
| unsigned rc = sl->ref_count[list] << MB_MBAFF(sl); |
| if (rc == 1) { |
| val= 0; |
| } else if (rc == 2) { |
| val= get_bits1(&sl->gb)^1; |
| }else{ |
| val= get_ue_golomb_31(&sl->gb); |
| if (val >= rc) { |
| av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val); |
| return -1; |
| } |
| } |
| }else |
| val= LIST_NOT_USED&0xFF; |
| fill_rectangle(&sl->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1); |
| } |
| } |
| for (list = 0; list < sl->list_count; list++) { |
| for(i=0; i<2; i++){ |
| unsigned int val; |
| if(IS_DIR(mb_type, i, list)){ |
| pred_8x16_motion(h, sl, i*4, list, sl->ref_cache[list][ scan8[0] + 2*i ], &mx, &my); |
| mx += get_se_golomb(&sl->gb); |
| my += get_se_golomb(&sl->gb); |
| ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| |
| val= pack16to32(mx,my); |
| }else |
| val=0; |
| fill_rectangle(sl->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4); |
| } |
| } |
| } |
| } |
| |
| if(IS_INTER(mb_type)) |
| write_back_motion(h, sl, mb_type); |
| |
| if(!IS_INTRA16x16(mb_type)){ |
| cbp= get_ue_golomb(&sl->gb); |
| |
| if(decode_chroma){ |
| if(cbp > 47){ |
| av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| if (IS_INTRA4x4(mb_type)) |
| cbp = ff_h264_golomb_to_intra4x4_cbp[cbp]; |
| else |
| cbp = ff_h264_golomb_to_inter_cbp[cbp]; |
| }else{ |
| if(cbp > 15){ |
| av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp]; |
| else cbp= golomb_to_inter_cbp_gray[cbp]; |
| } |
| } else { |
| if (!decode_chroma && cbp>15) { |
| av_log(h->avctx, AV_LOG_ERROR, "gray chroma\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| |
| if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){ |
| mb_type |= MB_TYPE_8x8DCT*get_bits1(&sl->gb); |
| } |
| sl->cbp= |
| h->cbp_table[mb_xy]= cbp; |
| h->cur_pic.mb_type[mb_xy] = mb_type; |
| |
| if(cbp || IS_INTRA16x16(mb_type)){ |
| int i4x4, i8x8, chroma_idx; |
| int dquant; |
| int ret; |
| GetBitContext *gb = &sl->gb; |
| const uint8_t *scan, *scan8x8; |
| const int max_qp = 51 + 6 * (h->ps.sps->bit_depth_luma - 8); |
| |
| dquant= get_se_golomb(&sl->gb); |
| |
| sl->qscale += (unsigned)dquant; |
| |
| if (((unsigned)sl->qscale) > max_qp){ |
| if (sl->qscale < 0) sl->qscale += max_qp + 1; |
| else sl->qscale -= max_qp+1; |
| if (((unsigned)sl->qscale) > max_qp){ |
| av_log(h->avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, sl->mb_x, sl->mb_y); |
| return -1; |
| } |
| } |
| |
| sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale); |
| sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale); |
| |
| if(IS_INTERLACED(mb_type)){ |
| scan8x8 = sl->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0; |
| scan = sl->qscale ? h->field_scan : h->field_scan_q0; |
| }else{ |
| scan8x8 = sl->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0; |
| scan = sl->qscale ? h->zigzag_scan : h->zigzag_scan_q0; |
| } |
| |
| if ((ret = decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 0)) < 0 ) { |
| return -1; |
| } |
| h->cbp_table[mb_xy] |= ret << 12; |
| if (CHROMA444(h)) { |
| if (decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 1) < 0 ) { |
| return -1; |
| } |
| if (decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 2) < 0 ) { |
| return -1; |
| } |
| } else { |
| const int num_c8x8 = h->ps.sps->chroma_format_idc; |
| |
| if(cbp&0x30){ |
| for(chroma_idx=0; chroma_idx<2; chroma_idx++) |
| if (decode_residual(h, sl, gb, sl->mb + ((256 + 16*16*chroma_idx) << pixel_shift), |
| CHROMA_DC_BLOCK_INDEX + chroma_idx, |
| CHROMA422(h) ? ff_h264_chroma422_dc_scan : ff_h264_chroma_dc_scan, |
| NULL, 4 * num_c8x8) < 0) { |
| return -1; |
| } |
| } |
| |
| if(cbp&0x20){ |
| for(chroma_idx=0; chroma_idx<2; chroma_idx++){ |
| const uint32_t *qmul = h->ps.pps->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[chroma_idx]]; |
| int16_t *mb = sl->mb + (16*(16 + 16*chroma_idx) << pixel_shift); |
| for (i8x8 = 0; i8x8<num_c8x8; i8x8++) { |
| for (i4x4 = 0; i4x4 < 4; i4x4++) { |
| const int index = 16 + 16*chroma_idx + 8*i8x8 + i4x4; |
| if (decode_residual(h, sl, gb, mb, index, scan + 1, qmul, 15) < 0) |
| return -1; |
| mb += 16 << pixel_shift; |
| } |
| } |
| } |
| }else{ |
| fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1); |
| fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1); |
| } |
| } |
| }else{ |
| fill_rectangle(&sl->non_zero_count_cache[scan8[ 0]], 4, 4, 8, 0, 1); |
| fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1); |
| fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1); |
| } |
| h->cur_pic.qscale_table[mb_xy] = sl->qscale; |
| write_back_non_zero_count(h, sl); |
| |
| return 0; |
| } |
