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 WORD32 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 return OK; 112 } 113 114 WORD32 ih264d_form_scaling_matrix_picture(dec_seq_params_t *ps_seq, 115 dec_pic_params_t *ps_pic, 116 dec_struct_t *ps_dec) 117 { 118 /* default scaling matrices */ 119 WORD32 i4_i; 120 121 /* check the SPS first */ 122 if(ps_seq->i4_seq_scaling_matrix_present_flag) 123 { 124 for(i4_i = 0; i4_i < 8; i4_i++) 125 { 126 if(i4_i < 6) 127 { 128 /* fall-back rule A */ 129 if(!ps_seq->u1_seq_scaling_list_present_flag[i4_i]) 130 { 131 if((i4_i == 0) || (i4_i == 3)) 132 { 133 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 134 (i4_i == 0) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 135 } 136 else 137 { 138 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 139 ps_dec->s_high_profile.pi2_scale_mat[i4_i 140 - 1]; 141 } 142 } 143 else 144 { 145 if(ps_seq->u1_use_default_scaling_matrix_flag[i4_i]) 146 { 147 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 148 (i4_i < 3) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 149 } 150 else 151 { 152 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 153 ps_seq->i2_scalinglist4x4[i4_i]; 154 } 155 } 156 157 } 158 else 159 { 160 /* fall-back rule A */ 161 if((!ps_seq->u1_seq_scaling_list_present_flag[i4_i]) 162 || (ps_seq->u1_use_default_scaling_matrix_flag[i4_i])) 163 { 164 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 165 (i4_i == 6) ? ((WORD16*)gai2_ih264d_default_intra8x8) : ((WORD16*)gai2_ih264d_default_inter8x8); 166 } 167 else 168 { 169 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 170 ps_seq->i2_scalinglist8x8[i4_i - 6]; 171 } 172 } 173 } 174 } 175 176 /* checking for the PPS */ 177 178 if(ps_pic->i4_pic_scaling_matrix_present_flag) 179 { 180 for(i4_i = 0; i4_i < 8; i4_i++) 181 { 182 if(i4_i < 6) 183 { 184 /* fall back rule B */ 185 if(!ps_pic->u1_pic_scaling_list_present_flag[i4_i]) 186 { 187 if((i4_i == 0) || (i4_i == 3)) 188 { 189 if(!ps_seq->i4_seq_scaling_matrix_present_flag) 190 { 191 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 192 (i4_i == 0) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 193 } 194 } 195 else 196 { 197 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 198 ps_dec->s_high_profile.pi2_scale_mat[i4_i 199 - 1]; 200 } 201 } 202 else 203 { 204 if(ps_pic->u1_pic_use_default_scaling_matrix_flag[i4_i]) 205 { 206 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 207 (i4_i < 3) ? (WORD16 *)(gai2_ih264d_default_intra4x4) : (WORD16 *)(gai2_ih264d_default_inter4x4); 208 } 209 else 210 { 211 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 212 ps_pic->i2_pic_scalinglist4x4[i4_i]; 213 } 214 } 215 } 216 else 217 { 218 if(!ps_pic->u1_pic_scaling_list_present_flag[i4_i]) 219 { 220 if(!ps_seq->i4_seq_scaling_matrix_present_flag) 221 { 222 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 223 (i4_i == 6) ? ((WORD16*)gai2_ih264d_default_intra8x8) : ((WORD16*)gai2_ih264d_default_inter8x8); 224 } 225 } 226 else 227 { 228 if(ps_pic->u1_pic_use_default_scaling_matrix_flag[i4_i]) 229 { 230 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 231 (i4_i == 6) ? (WORD16 *)(gai2_ih264d_default_intra8x8) : (WORD16 *)(gai2_ih264d_default_inter8x8); 232 } 233 else 234 { 235 ps_dec->s_high_profile.pi2_scale_mat[i4_i] = 236 ps_pic->i2_pic_scalinglist8x8[i4_i - 6]; 237 } 238 } 239 } 240 } 241 } 242 243 /*************************************************************************/ 244 /* perform the inverse scanning for the frame and field scaling matrices */ 245 /*************************************************************************/ 246 { 247 UWORD8 *pu1_inv_scan_4x4; 248 WORD32 i4_i, i4_j; 249 250 pu1_inv_scan_4x4 = (UWORD8 *)gau1_ih264d_inv_scan; 251 252 /* for all 4x4 matrices */ 253 for(i4_i = 0; i4_i < 6; i4_i++) 254 { 255 if(ps_dec->s_high_profile.pi2_scale_mat[i4_i] == NULL) 256 return ERROR_CORRUPTED_SLICE; 257 258 for(i4_j = 0; i4_j < 16; i4_j++) 259 { 260 ps_dec->s_high_profile.i2_scalinglist4x4[i4_i][pu1_inv_scan_4x4[i4_j]] = 261 ps_dec->s_high_profile.pi2_scale_mat[i4_i][i4_j]; 262 263 } 264 } 265 266 /* for all 8x8 matrices */ 267 for(i4_i = 0; i4_i < 2; i4_i++) 268 { 269 if(ps_dec->s_high_profile.pi2_scale_mat[i4_i + 6] == NULL) 270 return ERROR_CORRUPTED_SLICE; 271 272 for(i4_j = 0; i4_j < 64; i4_j++) 273 { 274 ps_dec->s_high_profile.i2_scalinglist8x8[i4_i][gau1_ih264d_inv_scan_prog8x8_cabac[i4_j]] = 275 ps_dec->s_high_profile.pi2_scale_mat[i4_i + 6][i4_j]; 276 277 } 278 } 279 } 280 return OK; 281 } 282 283
