1 /* 2 Copyright (c) 2011 Stanislav Vitvitskiy 3 4 Permission is hereby granted, free of charge, to any person obtaining a copy of this 5 software and associated documentation files (the "Software"), to deal in the Software 6 without restriction, including without limitation the rights to use, copy, modify, 7 merge, publish, distribute, sublicense, and/or sell copies of the Software, and to 8 permit persons to whom the Software is furnished to do so, subject to the following 9 conditions: 10 11 The above copyright notice and this permission notice shall be included in all copies or 12 substantial portions of the Software. 13 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 15 INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 16 PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 17 FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 18 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 19 OR OTHER DEALINGS IN THE SOFTWARE. 20 */ 21 package com.googlecode.mp4parser.h264.model; 22 23 import com.googlecode.mp4parser.h264.read.CAVLCReader; 24 import com.googlecode.mp4parser.h264.write.CAVLCWriter; 25 26 import java.io.ByteArrayInputStream; 27 import java.io.IOException; 28 import java.io.InputStream; 29 import java.io.OutputStream; 30 import java.util.Arrays; 31 32 /** 33 * Picture Parameter Set entity of H264 bitstream 34 * <p/> 35 * capable to serialize / deserialize with CAVLC bitstream 36 * 37 * @author Stanislav Vitvitskiy 38 */ 39 public class PictureParameterSet extends BitstreamElement { 40 41 public static class PPSExt { 42 public boolean transform_8x8_mode_flag; 43 public ScalingMatrix scalindMatrix = new ScalingMatrix(); 44 public int second_chroma_qp_index_offset; 45 public boolean[] pic_scaling_list_present_flag; 46 47 @Override 48 public String toString() { 49 return "PPSExt{" + 50 "transform_8x8_mode_flag=" + transform_8x8_mode_flag + 51 ", scalindMatrix=" + scalindMatrix + 52 ", second_chroma_qp_index_offset=" + second_chroma_qp_index_offset + 53 ", pic_scaling_list_present_flag=" + pic_scaling_list_present_flag + 54 '}'; 55 } 56 } 57 58 public boolean entropy_coding_mode_flag; 59 public int num_ref_idx_l0_active_minus1; 60 public int num_ref_idx_l1_active_minus1; 61 public int slice_group_change_rate_minus1; 62 public int pic_parameter_set_id; 63 public int seq_parameter_set_id; 64 public boolean pic_order_present_flag; 65 public int num_slice_groups_minus1; 66 public int slice_group_map_type; 67 public boolean weighted_pred_flag; 68 public int weighted_bipred_idc; 69 public int pic_init_qp_minus26; 70 public int pic_init_qs_minus26; 71 public int chroma_qp_index_offset; 72 public boolean deblocking_filter_control_present_flag; 73 public boolean constrained_intra_pred_flag; 74 public boolean redundant_pic_cnt_present_flag; 75 public int[] top_left; 76 public int[] bottom_right; 77 public int[] run_length_minus1; 78 public boolean slice_group_change_direction_flag; 79 public int[] slice_group_id; 80 public PPSExt extended; 81 82 public static PictureParameterSet read(byte[] b) throws IOException { 83 return read(new ByteArrayInputStream(b)); 84 } 85 86 public static PictureParameterSet read(InputStream is) throws IOException { 87 CAVLCReader reader = new CAVLCReader(is); 88 PictureParameterSet pps = new PictureParameterSet(); 89 90 pps.pic_parameter_set_id = reader.readUE("PPS: pic_parameter_set_id"); 91 pps.seq_parameter_set_id = reader.readUE("PPS: seq_parameter_set_id"); 92 pps.entropy_coding_mode_flag = reader 93 .readBool("PPS: entropy_coding_mode_flag"); 94 pps.pic_order_present_flag = reader 95 .readBool("PPS: pic_order_present_flag"); 96 pps.num_slice_groups_minus1 = reader 97 .readUE("PPS: num_slice_groups_minus1"); 98 if (pps.num_slice_groups_minus1 > 0) { 99 pps.slice_group_map_type = reader 100 .readUE("PPS: slice_group_map_type"); 101 pps.top_left = new int[pps.num_slice_groups_minus1 + 1]; 102 pps.bottom_right = new int[pps.num_slice_groups_minus1 + 1]; 103 pps.run_length_minus1 = new int[pps.num_slice_groups_minus1 + 1]; 104 if (pps.slice_group_map_type == 0) 105 for (int iGroup = 0; iGroup <= pps.num_slice_groups_minus1; iGroup++) 106 pps.run_length_minus1[iGroup] = reader 107 .readUE("PPS: run_length_minus1"); 108 else if (pps.slice_group_map_type == 2) 109 for (int iGroup = 0; iGroup < pps.num_slice_groups_minus1; iGroup++) { 110 pps.top_left[iGroup] = reader.readUE("PPS: top_left"); 111 pps.bottom_right[iGroup] = reader 112 .readUE("PPS: bottom_right"); 113 } 114 else if (pps.slice_group_map_type == 3 115 || pps.slice_group_map_type == 4 116 || pps.slice_group_map_type == 5) { 117 pps.slice_group_change_direction_flag = reader 118 .readBool("PPS: slice_group_change_direction_flag"); 119 pps.slice_group_change_rate_minus1 = reader 120 .readUE("PPS: slice_group_change_rate_minus1"); 121 } else if (pps.slice_group_map_type == 6) { 122 int NumberBitsPerSliceGroupId; 123 if (pps.num_slice_groups_minus1 + 1 > 4) 124 NumberBitsPerSliceGroupId = 3; 125 else if (pps.num_slice_groups_minus1 + 1 > 2) 126 NumberBitsPerSliceGroupId = 2; 127 else 128 NumberBitsPerSliceGroupId = 1; 129 int pic_size_in_map_units_minus1 = reader 130 .readUE("PPS: pic_size_in_map_units_minus1"); 131 pps.slice_group_id = new int[pic_size_in_map_units_minus1 + 1]; 132 for (int i = 0; i <= pic_size_in_map_units_minus1; i++) { 133 pps.slice_group_id[i] = reader.readU( 134 NumberBitsPerSliceGroupId, "PPS: slice_group_id [" 135 + i + "]f"); 136 } 137 } 138 } 139 pps.num_ref_idx_l0_active_minus1 = reader 140 .readUE("PPS: num_ref_idx_l0_active_minus1"); 141 pps.num_ref_idx_l1_active_minus1 = reader 142 .readUE("PPS: num_ref_idx_l1_active_minus1"); 143 pps.weighted_pred_flag = reader.readBool("PPS: weighted_pred_flag"); 144 pps.weighted_bipred_idc = (int) reader.readNBit(2, 145 "PPS: weighted_bipred_idc"); 146 pps.pic_init_qp_minus26 = reader.readSE("PPS: pic_init_qp_minus26"); 147 pps.pic_init_qs_minus26 = reader.readSE("PPS: pic_init_qs_minus26"); 148 pps.chroma_qp_index_offset = reader 149 .readSE("PPS: chroma_qp_index_offset"); 150 pps.deblocking_filter_control_present_flag = reader 151 .readBool("PPS: deblocking_filter_control_present_flag"); 152 pps.constrained_intra_pred_flag = reader 153 .readBool("PPS: constrained_intra_pred_flag"); 154 pps.redundant_pic_cnt_present_flag = reader 155 .readBool("PPS: redundant_pic_cnt_present_flag"); 156 if (reader.moreRBSPData()) { 157 pps.extended = new PictureParameterSet.PPSExt(); 158 pps.extended.transform_8x8_mode_flag = reader 159 .readBool("PPS: transform_8x8_mode_flag"); 160 boolean pic_scaling_matrix_present_flag = reader 161 .readBool("PPS: pic_scaling_matrix_present_flag"); 162 if (pic_scaling_matrix_present_flag) { 163 for (int i = 0; i < 6 + 2 * (pps.extended.transform_8x8_mode_flag ? 1 164 : 0); i++) { 165 boolean pic_scaling_list_present_flag = reader 166 .readBool("PPS: pic_scaling_list_present_flag"); 167 if (pic_scaling_list_present_flag) { 168 pps.extended.scalindMatrix.ScalingList4x4 = new ScalingList[8]; 169 pps.extended.scalindMatrix.ScalingList8x8 = new ScalingList[8]; 170 if (i < 6) { 171 pps.extended.scalindMatrix.ScalingList4x4[i] = ScalingList 172 .read(reader, 16); 173 } else { 174 pps.extended.scalindMatrix.ScalingList8x8[i - 6] = ScalingList 175 .read(reader, 64); 176 } 177 } 178 } 179 } 180 pps.extended.second_chroma_qp_index_offset = reader 181 .readSE("PPS: second_chroma_qp_index_offset"); 182 } 183 184 reader.readTrailingBits(); 185 186 return pps; 187 } 188 189 public void write(OutputStream out) throws IOException { 190 CAVLCWriter writer = new CAVLCWriter(out); 191 192 writer.writeUE(pic_parameter_set_id, "PPS: pic_parameter_set_id"); 193 writer.writeUE(seq_parameter_set_id, "PPS: seq_parameter_set_id"); 194 writer.writeBool(entropy_coding_mode_flag, 195 "PPS: entropy_coding_mode_flag"); 196 writer.writeBool(pic_order_present_flag, "PPS: pic_order_present_flag"); 197 writer.writeUE(num_slice_groups_minus1, "PPS: num_slice_groups_minus1"); 198 if (num_slice_groups_minus1 > 0) { 199 writer.writeUE(slice_group_map_type, "PPS: slice_group_map_type"); 200 int[] top_left = new int[1]; 201 int[] bottom_right = new int[1]; 202 int[] run_length_minus1 = new int[1]; 203 if (slice_group_map_type == 0) { 204 for (int iGroup = 0; iGroup <= num_slice_groups_minus1; iGroup++) { 205 writer.writeUE(run_length_minus1[iGroup], "PPS: "); 206 } 207 } else if (slice_group_map_type == 2) { 208 for (int iGroup = 0; iGroup < num_slice_groups_minus1; iGroup++) { 209 writer.writeUE(top_left[iGroup], "PPS: "); 210 writer.writeUE(bottom_right[iGroup], "PPS: "); 211 } 212 } else if (slice_group_map_type == 3 || slice_group_map_type == 4 213 || slice_group_map_type == 5) { 214 writer.writeBool(slice_group_change_direction_flag, 215 "PPS: slice_group_change_direction_flag"); 216 writer.writeUE(slice_group_change_rate_minus1, 217 "PPS: slice_group_change_rate_minus1"); 218 } else if (slice_group_map_type == 6) { 219 int NumberBitsPerSliceGroupId; 220 if (num_slice_groups_minus1 + 1 > 4) 221 NumberBitsPerSliceGroupId = 3; 222 else if (num_slice_groups_minus1 + 1 > 2) 223 NumberBitsPerSliceGroupId = 2; 224 else 225 NumberBitsPerSliceGroupId = 1; 226 writer.writeUE(slice_group_id.length, "PPS: "); 227 for (int i = 0; i <= slice_group_id.length; i++) { 228 writer.writeU(slice_group_id[i], NumberBitsPerSliceGroupId); 229 } 230 } 231 } 232 writer.writeUE(num_ref_idx_l0_active_minus1, 233 "PPS: num_ref_idx_l0_active_minus1"); 234 writer.writeUE(num_ref_idx_l1_active_minus1, 235 "PPS: num_ref_idx_l1_active_minus1"); 236 writer.writeBool(weighted_pred_flag, "PPS: weighted_pred_flag"); 237 writer.writeNBit(weighted_bipred_idc, 2, "PPS: weighted_bipred_idc"); 238 writer.writeSE(pic_init_qp_minus26, "PPS: pic_init_qp_minus26"); 239 writer.writeSE(pic_init_qs_minus26, "PPS: pic_init_qs_minus26"); 240 writer.writeSE(chroma_qp_index_offset, "PPS: chroma_qp_index_offset"); 241 writer.writeBool(deblocking_filter_control_present_flag, 242 "PPS: deblocking_filter_control_present_flag"); 243 writer.writeBool(constrained_intra_pred_flag, 244 "PPS: constrained_intra_pred_flag"); 245 writer.writeBool(redundant_pic_cnt_present_flag, 246 "PPS: redundant_pic_cnt_present_flag"); 247 if (extended != null) { 248 writer.writeBool(extended.transform_8x8_mode_flag, 249 "PPS: transform_8x8_mode_flag"); 250 writer.writeBool(extended.scalindMatrix != null, 251 "PPS: scalindMatrix"); 252 if (extended.scalindMatrix != null) { 253 for (int i = 0; i < 6 + 2 * (extended.transform_8x8_mode_flag ? 1 254 : 0); i++) { 255 if (i < 6) { 256 writer 257 .writeBool( 258 extended.scalindMatrix.ScalingList4x4[i] != null, 259 "PPS: "); 260 if (extended.scalindMatrix.ScalingList4x4[i] != null) { 261 extended.scalindMatrix.ScalingList4x4[i] 262 .write(writer); 263 } 264 265 } else { 266 writer 267 .writeBool( 268 extended.scalindMatrix.ScalingList8x8[i - 6] != null, 269 "PPS: "); 270 if (extended.scalindMatrix.ScalingList8x8[i - 6] != null) { 271 extended.scalindMatrix.ScalingList8x8[i - 6] 272 .write(writer); 273 } 274 } 275 } 276 } 277 writer.writeSE(extended.second_chroma_qp_index_offset, "PPS: "); 278 } 279 280 writer.writeTrailingBits(); 281 } 282 283 @Override 284 public int hashCode() { 285 final int prime = 31; 286 int result = 1; 287 result = prime * result + Arrays.hashCode(bottom_right); 288 result = prime * result + chroma_qp_index_offset; 289 result = prime * result + (constrained_intra_pred_flag ? 1231 : 1237); 290 result = prime * result 291 + (deblocking_filter_control_present_flag ? 1231 : 1237); 292 result = prime * result + (entropy_coding_mode_flag ? 1231 : 1237); 293 result = prime * result 294 + ((extended == null) ? 0 : extended.hashCode()); 295 result = prime * result + num_ref_idx_l0_active_minus1; 296 result = prime * result + num_ref_idx_l1_active_minus1; 297 result = prime * result + num_slice_groups_minus1; 298 result = prime * result + pic_init_qp_minus26; 299 result = prime * result + pic_init_qs_minus26; 300 result = prime * result + (pic_order_present_flag ? 1231 : 1237); 301 result = prime * result + pic_parameter_set_id; 302 result = prime * result 303 + (redundant_pic_cnt_present_flag ? 1231 : 1237); 304 result = prime * result + Arrays.hashCode(run_length_minus1); 305 result = prime * result + seq_parameter_set_id; 306 result = prime * result 307 + (slice_group_change_direction_flag ? 1231 : 1237); 308 result = prime * result + slice_group_change_rate_minus1; 309 result = prime * result + Arrays.hashCode(slice_group_id); 310 result = prime * result + slice_group_map_type; 311 result = prime * result + Arrays.hashCode(top_left); 312 result = prime * result + weighted_bipred_idc; 313 result = prime * result + (weighted_pred_flag ? 1231 : 1237); 314 return result; 315 } 316 317 @Override 318 public boolean equals(Object obj) { 319 if (this == obj) 320 return true; 321 if (obj == null) 322 return false; 323 if (getClass() != obj.getClass()) 324 return false; 325 PictureParameterSet other = (PictureParameterSet) obj; 326 if (!Arrays.equals(bottom_right, other.bottom_right)) 327 return false; 328 if (chroma_qp_index_offset != other.chroma_qp_index_offset) 329 return false; 330 if (constrained_intra_pred_flag != other.constrained_intra_pred_flag) 331 return false; 332 if (deblocking_filter_control_present_flag != other.deblocking_filter_control_present_flag) 333 return false; 334 if (entropy_coding_mode_flag != other.entropy_coding_mode_flag) 335 return false; 336 if (extended == null) { 337 if (other.extended != null) 338 return false; 339 } else if (!extended.equals(other.extended)) 340 return false; 341 if (num_ref_idx_l0_active_minus1 != other.num_ref_idx_l0_active_minus1) 342 return false; 343 if (num_ref_idx_l1_active_minus1 != other.num_ref_idx_l1_active_minus1) 344 return false; 345 if (num_slice_groups_minus1 != other.num_slice_groups_minus1) 346 return false; 347 if (pic_init_qp_minus26 != other.pic_init_qp_minus26) 348 return false; 349 if (pic_init_qs_minus26 != other.pic_init_qs_minus26) 350 return false; 351 if (pic_order_present_flag != other.pic_order_present_flag) 352 return false; 353 if (pic_parameter_set_id != other.pic_parameter_set_id) 354 return false; 355 if (redundant_pic_cnt_present_flag != other.redundant_pic_cnt_present_flag) 356 return false; 357 if (!Arrays.equals(run_length_minus1, other.run_length_minus1)) 358 return false; 359 if (seq_parameter_set_id != other.seq_parameter_set_id) 360 return false; 361 if (slice_group_change_direction_flag != other.slice_group_change_direction_flag) 362 return false; 363 if (slice_group_change_rate_minus1 != other.slice_group_change_rate_minus1) 364 return false; 365 if (!Arrays.equals(slice_group_id, other.slice_group_id)) 366 return false; 367 if (slice_group_map_type != other.slice_group_map_type) 368 return false; 369 if (!Arrays.equals(top_left, other.top_left)) 370 return false; 371 if (weighted_bipred_idc != other.weighted_bipred_idc) 372 return false; 373 if (weighted_pred_flag != other.weighted_pred_flag) 374 return false; 375 return true; 376 } 377 378 @Override 379 public String toString() { 380 return "PictureParameterSet{" + 381 "\n entropy_coding_mode_flag=" + entropy_coding_mode_flag + 382 ",\n num_ref_idx_l0_active_minus1=" + num_ref_idx_l0_active_minus1 + 383 ",\n num_ref_idx_l1_active_minus1=" + num_ref_idx_l1_active_minus1 + 384 ",\n slice_group_change_rate_minus1=" + slice_group_change_rate_minus1 + 385 ",\n pic_parameter_set_id=" + pic_parameter_set_id + 386 ",\n seq_parameter_set_id=" + seq_parameter_set_id + 387 ",\n pic_order_present_flag=" + pic_order_present_flag + 388 ",\n num_slice_groups_minus1=" + num_slice_groups_minus1 + 389 ",\n slice_group_map_type=" + slice_group_map_type + 390 ",\n weighted_pred_flag=" + weighted_pred_flag + 391 ",\n weighted_bipred_idc=" + weighted_bipred_idc + 392 ",\n pic_init_qp_minus26=" + pic_init_qp_minus26 + 393 ",\n pic_init_qs_minus26=" + pic_init_qs_minus26 + 394 ",\n chroma_qp_index_offset=" + chroma_qp_index_offset + 395 ",\n deblocking_filter_control_present_flag=" + deblocking_filter_control_present_flag + 396 ",\n constrained_intra_pred_flag=" + constrained_intra_pred_flag + 397 ",\n redundant_pic_cnt_present_flag=" + redundant_pic_cnt_present_flag + 398 ",\n top_left=" + top_left + 399 ",\n bottom_right=" + bottom_right + 400 ",\n run_length_minus1=" + run_length_minus1 + 401 ",\n slice_group_change_direction_flag=" + slice_group_change_direction_flag + 402 ",\n slice_group_id=" + slice_group_id + 403 ",\n extended=" + extended + 404 '}'; 405 } 406 } 407
