1 /****************************************************************************** 2 * 3 * Copyright (C) 2015 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 #include "ih264_typedefs.h" 21 #include "ih264_macros.h" 22 #include "ih264_platform_macros.h" 23 #include "ih264d_bitstrm.h" 24 #include "ih264d_structs.h" 25 #include "ih264d_parse_cavlc.h" 26 #include "ih264d_defs.h" 27 #include "ih264d_defs.h" 28 #include "ih264d_defs.h" 29 30 #include "ih264d_parse_slice.h" 31 #include "ih264d_tables.h" 32 #include "ih264d_utils.h" 33 #include "ih264d_nal.h" 34 #include "ih264d_deblocking.h" 35 36 #include "ih264d_mem_request.h" 37 #include "ih264d_debug.h" 38 39 #include "ih264d_error_handler.h" 40 #include "ih264d_mb_utils.h" 41 #include "ih264d_sei.h" 42 #include "ih264d_vui.h" 43 #include "ih264d_tables.h" 44 45 #define IDCT_BLOCK_WIDTH8X8 8 46 47 void ih264d_scaling_list(WORD16 *pi2_scaling_list, 48 WORD32 i4_size_of_scalinglist, 49 UWORD8 *pu1_use_default_scaling_matrix_flag, 50 dec_bit_stream_t *ps_bitstrm) 51 { 52 WORD32 i4_j, i4_delta_scale, i4_lastScale = 8, i4_nextScale = 8; 53 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; 54 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; 55 56 *pu1_use_default_scaling_matrix_flag = 0; 57 58 for(i4_j = 0; i4_j < i4_size_of_scalinglist; i4_j++) 59 { 60 if(i4_nextScale != 0) 61 { 62 i4_delta_scale = ih264d_sev(pu4_bitstrm_ofst, 63 pu4_bitstrm_buf); 64 65 i4_nextScale = ((i4_lastScale + i4_delta_scale + 256) & 0xff); 66 67 *pu1_use_default_scaling_matrix_flag = ((i4_j == 0) 68 && (i4_nextScale == 0)); 69 70 } 71 pi2_scaling_list[i4_j] = 72 (i4_nextScale == 0) ? (i4_lastScale) : (i4_nextScale); 73 i4_lastScale = pi2_scaling_list[i4_j]; 74 } 75 } 76 77 void ih264d_form_default_scaling_matrix(dec_struct_t *ps_dec) 78 { 79 80 /*************************************************************************/ 81 /* perform the inverse scanning for the frame and field scaling matrices */ 82 /*************************************************************************/ 83 { 84 UWORD8 *pu1_inv_scan; 85 WORD32 i4_i, i4_j; 86 87 pu1_inv_scan = (UWORD8 *)gau1_ih264d_inv_scan; 88 89 /* for all 4x4 matrices */ 90 for(i4_i = 0; i4_i < 6; i4_i++) 91 { 92 for(i4_j = 0; i4_j < 16; i4_j++) 93 { 94 ps_dec->s_high_profile.i2_scalinglist4x4[i4_i][pu1_inv_scan[i4_j]] = 95 16; 96 97 } 98 } 99 100 /* for all 8x8 matrices */ 101 for(i4_i = 0; i4_i < 2; i4_i++) 102 { 103 for(i4_j = 0; i4_j < 64; i4_j++) 104 { 105 ps_dec->s_high_profile.i2_scalinglist8x8[i4_i][gau1_ih264d_inv_scan_prog8x8_cabac[i4_j]] = 106 16; 107 108 } 109 } 110 } 111 } 112 113 void ih264d_form_scaling_matrix_picture(dec_seq_params_t *ps_seq, 114 dec_pic_params_t *ps_pic, 115 dec_struct_t *ps_dec) 116 { 117 /* default scaling matrices */ 118 WORD32 i4_i; 119 120 /* check the SPS first */ 121 if(ps_seq->i4_seq_scaling_matrix_present_flag) 122 { 123 for(i4_i = 0; i4_i < 8; i4_i++) 124 { 125 if(i4_i < 6) 126 { 127 /* fall-back rule A */ 128 if(!ps_seq->u1_seq_scaling_list_present_flag[i4_i]) 129 { 130 if((i4_i == 0) || (i4_i == 3)) 131 { 132 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 133 (i4_i == 0) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 134 } 135 else 136 { 137 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 138 ps_dec->s_high_profile.pi2_scale_mat[i4_i 139 - 1]; 140 } 141 } 142 else 143 { 144 if(ps_seq->u1_use_default_scaling_matrix_flag[i4_i]) 145 { 146 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 147 (i4_i < 3) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 148 } 149 else 150 { 151 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 152 ps_seq->i2_scalinglist4x4[i4_i]; 153 } 154 } 155 156 } 157 else 158 { 159 /* fall-back rule A */ 160 if((!ps_seq->u1_seq_scaling_list_present_flag[i4_i]) 161 || (ps_seq->u1_use_default_scaling_matrix_flag[i4_i])) 162 { 163 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 164 (i4_i == 6) ? ((WORD16*)gai2_ih264d_default_intra8x8) : ((WORD16*)gai2_ih264d_default_inter8x8); 165 } 166 else 167 { 168 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 169 ps_seq->i2_scalinglist8x8[i4_i - 6]; 170 } 171 } 172 } 173 } 174 175 /* checking for the PPS */ 176 177 if(ps_pic->i4_pic_scaling_matrix_present_flag) 178 { 179 for(i4_i = 0; i4_i < 8; i4_i++) 180 { 181 if(i4_i < 6) 182 { 183 /* fall back rule B */ 184 if(!ps_pic->u1_pic_scaling_list_present_flag[i4_i]) 185 { 186 if((i4_i == 0) || (i4_i == 3)) 187 { 188 if(!ps_seq->i4_seq_scaling_matrix_present_flag) 189 { 190 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 191 (i4_i == 0) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 192 } 193 } 194 else 195 { 196 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 197 ps_dec->s_high_profile.pi2_scale_mat[i4_i 198 - 1]; 199 } 200 } 201 else 202 { 203 if(ps_pic->u1_pic_use_default_scaling_matrix_flag[i4_i]) 204 { 205 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 206 (i4_i < 3) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 207 } 208 else 209 { 210 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 211 ps_pic->i2_pic_scalinglist4x4[i4_i]; 212 } 213 } 214 } 215 else 216 { 217 if(!ps_pic->u1_pic_scaling_list_present_flag[i4_i]) 218 { 219 if(!ps_seq->u1_seq_scaling_list_present_flag[i4_i]) 220 { 221 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 222 (i4_i == 6) ? ((WORD16*)gai2_ih264d_default_intra8x8) : ((WORD16*)gai2_ih264d_default_inter8x8); 223 } 224 } 225 else 226 { 227 if(ps_pic->u1_pic_use_default_scaling_matrix_flag[i4_i]) 228 { 229 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 230 (i4_i == 6) ? (WORD16 *)(gai2_ih264d_default_intra8x8) : (WORD16 *)(gai2_ih264d_default_inter8x8); 231 } 232 else 233 { 234 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 235 ps_pic->i2_pic_scalinglist8x8[i4_i - 6]; 236 } 237 } 238 } 239 } 240 } 241 242 /*************************************************************************/ 243 /* perform the inverse scanning for the frame and field scaling matrices */ 244 /*************************************************************************/ 245 { 246 UWORD8 *pu1_inv_scan_4x4; 247 WORD32 i4_i, i4_j; 248 249 pu1_inv_scan_4x4 = (UWORD8 *)gau1_ih264d_inv_scan; 250 251 /* for all 4x4 matrices */ 252 for(i4_i = 0; i4_i < 6; i4_i++) 253 { 254 for(i4_j = 0; i4_j < 16; i4_j++) 255 { 256 ps_dec->s_high_profile.i2_scalinglist4x4[i4_i][pu1_inv_scan_4x4[i4_j]] = 257 ps_dec->s_high_profile.pi2_scale_mat[i4_i][i4_j]; 258 259 } 260 } 261 262 /* for all 8x8 matrices */ 263 for(i4_i = 0; i4_i < 2; i4_i++) 264 { 265 for(i4_j = 0; i4_j < 64; i4_j++) 266 { 267 ps_dec->s_high_profile.i2_scalinglist8x8[i4_i][gau1_ih264d_inv_scan_prog8x8_cabac[i4_j]] = 268 ps_dec->s_high_profile.pi2_scale_mat[i4_i + 6][i4_j]; 269 270 } 271 } 272 } 273 } 274 275
