Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_TAG "SampleTable" |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 18 | //#define LOG_NDEBUG 0 |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 19 | #include <utils/Log.h> |
| 20 | |
Andreas Huber | bd7b43b | 2009-10-13 10:22:55 -0700 | [diff] [blame] | 21 | #include "include/SampleTable.h" |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 22 | #include "include/SampleIterator.h" |
Andreas Huber | bd7b43b | 2009-10-13 10:22:55 -0700 | [diff] [blame] | 23 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 24 | #include <arpa/inet.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 25 | |
| 26 | #include <media/stagefright/DataSource.h> |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 27 | #include <media/stagefright/MediaDebug.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 28 | #include <media/stagefright/Utils.h> |
| 29 | |
| 30 | namespace android { |
| 31 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 32 | // static |
| 33 | const uint32_t SampleTable::kChunkOffsetType32 = FOURCC('s', 't', 'c', 'o'); |
| 34 | // static |
| 35 | const uint32_t SampleTable::kChunkOffsetType64 = FOURCC('c', 'o', '6', '4'); |
| 36 | // static |
| 37 | const uint32_t SampleTable::kSampleSizeType32 = FOURCC('s', 't', 's', 'z'); |
| 38 | // static |
| 39 | const uint32_t SampleTable::kSampleSizeTypeCompact = FOURCC('s', 't', 'z', '2'); |
| 40 | |
| 41 | //////////////////////////////////////////////////////////////////////////////// |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 42 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 43 | SampleTable::SampleTable(const sp<DataSource> &source) |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 44 | : mDataSource(source), |
| 45 | mChunkOffsetOffset(-1), |
| 46 | mChunkOffsetType(0), |
| 47 | mNumChunkOffsets(0), |
| 48 | mSampleToChunkOffset(-1), |
| 49 | mNumSampleToChunkOffsets(0), |
| 50 | mSampleSizeOffset(-1), |
| 51 | mSampleSizeFieldSize(0), |
| 52 | mDefaultSampleSize(0), |
| 53 | mNumSampleSizes(0), |
| 54 | mTimeToSampleCount(0), |
| 55 | mTimeToSample(NULL), |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 56 | mSampleTimeEntries(NULL), |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 57 | mCompositionTimeDeltaEntries(NULL), |
| 58 | mNumCompositionTimeDeltaEntries(0), |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 59 | mSyncSampleOffset(-1), |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 60 | mNumSyncSamples(0), |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 61 | mSyncSamples(NULL), |
| 62 | mLastSyncSampleIndex(0), |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 63 | mSampleToChunkEntries(NULL) { |
| 64 | mSampleIterator = new SampleIterator(this); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | SampleTable::~SampleTable() { |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 68 | delete[] mSampleToChunkEntries; |
| 69 | mSampleToChunkEntries = NULL; |
| 70 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 71 | delete[] mSyncSamples; |
| 72 | mSyncSamples = NULL; |
| 73 | |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 74 | delete[] mCompositionTimeDeltaEntries; |
| 75 | mCompositionTimeDeltaEntries = NULL; |
| 76 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 77 | delete[] mSampleTimeEntries; |
| 78 | mSampleTimeEntries = NULL; |
| 79 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 80 | delete[] mTimeToSample; |
| 81 | mTimeToSample = NULL; |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 82 | |
| 83 | delete mSampleIterator; |
| 84 | mSampleIterator = NULL; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | status_t SampleTable::setChunkOffsetParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 88 | uint32_t type, off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 89 | if (mChunkOffsetOffset >= 0) { |
| 90 | return ERROR_MALFORMED; |
| 91 | } |
| 92 | |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 93 | CHECK(type == kChunkOffsetType32 || type == kChunkOffsetType64); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 94 | |
| 95 | mChunkOffsetOffset = data_offset; |
| 96 | mChunkOffsetType = type; |
| 97 | |
| 98 | if (data_size < 8) { |
| 99 | return ERROR_MALFORMED; |
| 100 | } |
| 101 | |
| 102 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 103 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 104 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 105 | return ERROR_IO; |
| 106 | } |
| 107 | |
| 108 | if (U32_AT(header) != 0) { |
| 109 | // Expected version = 0, flags = 0. |
| 110 | return ERROR_MALFORMED; |
| 111 | } |
| 112 | |
| 113 | mNumChunkOffsets = U32_AT(&header[4]); |
| 114 | |
| 115 | if (mChunkOffsetType == kChunkOffsetType32) { |
| 116 | if (data_size < 8 + mNumChunkOffsets * 4) { |
| 117 | return ERROR_MALFORMED; |
| 118 | } |
| 119 | } else { |
| 120 | if (data_size < 8 + mNumChunkOffsets * 8) { |
| 121 | return ERROR_MALFORMED; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | return OK; |
| 126 | } |
| 127 | |
| 128 | status_t SampleTable::setSampleToChunkParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 129 | off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 130 | if (mSampleToChunkOffset >= 0) { |
| 131 | return ERROR_MALFORMED; |
| 132 | } |
| 133 | |
| 134 | mSampleToChunkOffset = data_offset; |
| 135 | |
| 136 | if (data_size < 8) { |
| 137 | return ERROR_MALFORMED; |
| 138 | } |
| 139 | |
| 140 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 141 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 142 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 143 | return ERROR_IO; |
| 144 | } |
| 145 | |
| 146 | if (U32_AT(header) != 0) { |
| 147 | // Expected version = 0, flags = 0. |
| 148 | return ERROR_MALFORMED; |
| 149 | } |
| 150 | |
| 151 | mNumSampleToChunkOffsets = U32_AT(&header[4]); |
| 152 | |
| 153 | if (data_size < 8 + mNumSampleToChunkOffsets * 12) { |
| 154 | return ERROR_MALFORMED; |
| 155 | } |
| 156 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 157 | mSampleToChunkEntries = |
| 158 | new SampleToChunkEntry[mNumSampleToChunkOffsets]; |
| 159 | |
| 160 | for (uint32_t i = 0; i < mNumSampleToChunkOffsets; ++i) { |
| 161 | uint8_t buffer[12]; |
| 162 | if (mDataSource->readAt( |
| 163 | mSampleToChunkOffset + 8 + i * 12, buffer, sizeof(buffer)) |
| 164 | != (ssize_t)sizeof(buffer)) { |
| 165 | return ERROR_IO; |
| 166 | } |
| 167 | |
| 168 | CHECK(U32_AT(buffer) >= 1); // chunk index is 1 based in the spec. |
| 169 | |
| 170 | // We want the chunk index to be 0-based. |
| 171 | mSampleToChunkEntries[i].startChunk = U32_AT(buffer) - 1; |
| 172 | mSampleToChunkEntries[i].samplesPerChunk = U32_AT(&buffer[4]); |
| 173 | mSampleToChunkEntries[i].chunkDesc = U32_AT(&buffer[8]); |
| 174 | } |
| 175 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 176 | return OK; |
| 177 | } |
| 178 | |
| 179 | status_t SampleTable::setSampleSizeParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 180 | uint32_t type, off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 181 | if (mSampleSizeOffset >= 0) { |
| 182 | return ERROR_MALFORMED; |
| 183 | } |
| 184 | |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 185 | CHECK(type == kSampleSizeType32 || type == kSampleSizeTypeCompact); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 186 | |
| 187 | mSampleSizeOffset = data_offset; |
| 188 | |
| 189 | if (data_size < 12) { |
| 190 | return ERROR_MALFORMED; |
| 191 | } |
| 192 | |
| 193 | uint8_t header[12]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 194 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 195 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 196 | return ERROR_IO; |
| 197 | } |
| 198 | |
| 199 | if (U32_AT(header) != 0) { |
| 200 | // Expected version = 0, flags = 0. |
| 201 | return ERROR_MALFORMED; |
| 202 | } |
| 203 | |
| 204 | mDefaultSampleSize = U32_AT(&header[4]); |
| 205 | mNumSampleSizes = U32_AT(&header[8]); |
| 206 | |
| 207 | if (type == kSampleSizeType32) { |
| 208 | mSampleSizeFieldSize = 32; |
| 209 | |
| 210 | if (mDefaultSampleSize != 0) { |
| 211 | return OK; |
| 212 | } |
| 213 | |
| 214 | if (data_size < 12 + mNumSampleSizes * 4) { |
| 215 | return ERROR_MALFORMED; |
| 216 | } |
| 217 | } else { |
| 218 | if ((mDefaultSampleSize & 0xffffff00) != 0) { |
| 219 | // The high 24 bits are reserved and must be 0. |
| 220 | return ERROR_MALFORMED; |
| 221 | } |
| 222 | |
Andreas Huber | 0a6f09e | 2011-05-12 13:38:20 -0700 | [diff] [blame] | 223 | mSampleSizeFieldSize = mDefaultSampleSize & 0xff; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 224 | mDefaultSampleSize = 0; |
| 225 | |
| 226 | if (mSampleSizeFieldSize != 4 && mSampleSizeFieldSize != 8 |
| 227 | && mSampleSizeFieldSize != 16) { |
| 228 | return ERROR_MALFORMED; |
| 229 | } |
| 230 | |
| 231 | if (data_size < 12 + (mNumSampleSizes * mSampleSizeFieldSize + 4) / 8) { |
| 232 | return ERROR_MALFORMED; |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | return OK; |
| 237 | } |
| 238 | |
| 239 | status_t SampleTable::setTimeToSampleParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 240 | off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 241 | if (mTimeToSample != NULL || data_size < 8) { |
| 242 | return ERROR_MALFORMED; |
| 243 | } |
| 244 | |
| 245 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 246 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 247 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 248 | return ERROR_IO; |
| 249 | } |
| 250 | |
| 251 | if (U32_AT(header) != 0) { |
| 252 | // Expected version = 0, flags = 0. |
| 253 | return ERROR_MALFORMED; |
| 254 | } |
| 255 | |
| 256 | mTimeToSampleCount = U32_AT(&header[4]); |
| 257 | mTimeToSample = new uint32_t[mTimeToSampleCount * 2]; |
| 258 | |
| 259 | size_t size = sizeof(uint32_t) * mTimeToSampleCount * 2; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 260 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 261 | data_offset + 8, mTimeToSample, size) < (ssize_t)size) { |
| 262 | return ERROR_IO; |
| 263 | } |
| 264 | |
| 265 | for (uint32_t i = 0; i < mTimeToSampleCount * 2; ++i) { |
| 266 | mTimeToSample[i] = ntohl(mTimeToSample[i]); |
| 267 | } |
| 268 | |
| 269 | return OK; |
| 270 | } |
| 271 | |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 272 | status_t SampleTable::setCompositionTimeToSampleParams( |
| 273 | off64_t data_offset, size_t data_size) { |
| 274 | LOGI("There are reordered frames present."); |
| 275 | |
| 276 | if (mCompositionTimeDeltaEntries != NULL || data_size < 8) { |
| 277 | return ERROR_MALFORMED; |
| 278 | } |
| 279 | |
| 280 | uint8_t header[8]; |
| 281 | if (mDataSource->readAt( |
| 282 | data_offset, header, sizeof(header)) |
| 283 | < (ssize_t)sizeof(header)) { |
| 284 | return ERROR_IO; |
| 285 | } |
| 286 | |
| 287 | if (U32_AT(header) != 0) { |
| 288 | // Expected version = 0, flags = 0. |
| 289 | return ERROR_MALFORMED; |
| 290 | } |
| 291 | |
| 292 | size_t numEntries = U32_AT(&header[4]); |
| 293 | |
| 294 | if (data_size != (numEntries + 1) * 8) { |
| 295 | return ERROR_MALFORMED; |
| 296 | } |
| 297 | |
| 298 | mNumCompositionTimeDeltaEntries = numEntries; |
| 299 | mCompositionTimeDeltaEntries = new uint32_t[2 * numEntries]; |
| 300 | |
| 301 | if (mDataSource->readAt( |
| 302 | data_offset + 8, mCompositionTimeDeltaEntries, numEntries * 8) |
| 303 | < (ssize_t)numEntries * 8) { |
| 304 | delete[] mCompositionTimeDeltaEntries; |
| 305 | mCompositionTimeDeltaEntries = NULL; |
| 306 | |
| 307 | return ERROR_IO; |
| 308 | } |
| 309 | |
| 310 | for (size_t i = 0; i < 2 * numEntries; ++i) { |
| 311 | mCompositionTimeDeltaEntries[i] = ntohl(mCompositionTimeDeltaEntries[i]); |
| 312 | } |
| 313 | |
| 314 | return OK; |
| 315 | } |
| 316 | |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 317 | status_t SampleTable::setSyncSampleParams(off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 318 | if (mSyncSampleOffset >= 0 || data_size < 8) { |
| 319 | return ERROR_MALFORMED; |
| 320 | } |
| 321 | |
| 322 | mSyncSampleOffset = data_offset; |
| 323 | |
| 324 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 325 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 326 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 327 | return ERROR_IO; |
| 328 | } |
| 329 | |
| 330 | if (U32_AT(header) != 0) { |
| 331 | // Expected version = 0, flags = 0. |
| 332 | return ERROR_MALFORMED; |
| 333 | } |
| 334 | |
| 335 | mNumSyncSamples = U32_AT(&header[4]); |
| 336 | |
| 337 | if (mNumSyncSamples < 2) { |
Andreas Huber | c69b9d3 | 2010-10-27 10:25:44 -0700 | [diff] [blame] | 338 | LOGV("Table of sync samples is empty or has only a single entry!"); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 339 | } |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 340 | |
| 341 | mSyncSamples = new uint32_t[mNumSyncSamples]; |
| 342 | size_t size = mNumSyncSamples * sizeof(uint32_t); |
| 343 | if (mDataSource->readAt(mSyncSampleOffset + 8, mSyncSamples, size) |
| 344 | != (ssize_t)size) { |
| 345 | return ERROR_IO; |
| 346 | } |
| 347 | |
| 348 | for (size_t i = 0; i < mNumSyncSamples; ++i) { |
| 349 | mSyncSamples[i] = ntohl(mSyncSamples[i]) - 1; |
| 350 | } |
| 351 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 352 | return OK; |
| 353 | } |
| 354 | |
| 355 | uint32_t SampleTable::countChunkOffsets() const { |
| 356 | return mNumChunkOffsets; |
| 357 | } |
| 358 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 359 | uint32_t SampleTable::countSamples() const { |
| 360 | return mNumSampleSizes; |
| 361 | } |
| 362 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 363 | status_t SampleTable::getMaxSampleSize(size_t *max_size) { |
| 364 | Mutex::Autolock autoLock(mLock); |
| 365 | |
| 366 | *max_size = 0; |
| 367 | |
| 368 | for (uint32_t i = 0; i < mNumSampleSizes; ++i) { |
| 369 | size_t sample_size; |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 370 | status_t err = getSampleSize_l(i, &sample_size); |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 371 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 372 | if (err != OK) { |
| 373 | return err; |
| 374 | } |
| 375 | |
| 376 | if (sample_size > *max_size) { |
| 377 | *max_size = sample_size; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | return OK; |
| 382 | } |
| 383 | |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 384 | uint32_t abs_difference(uint32_t time1, uint32_t time2) { |
| 385 | return time1 > time2 ? time1 - time2 : time2 - time1; |
| 386 | } |
| 387 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 388 | // static |
| 389 | int SampleTable::CompareIncreasingTime(const void *_a, const void *_b) { |
| 390 | const SampleTimeEntry *a = (const SampleTimeEntry *)_a; |
| 391 | const SampleTimeEntry *b = (const SampleTimeEntry *)_b; |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 392 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 393 | if (a->mCompositionTime < b->mCompositionTime) { |
| 394 | return -1; |
| 395 | } else if (a->mCompositionTime > b->mCompositionTime) { |
| 396 | return 1; |
| 397 | } |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 398 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | void SampleTable::buildSampleEntriesTable() { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 403 | Mutex::Autolock autoLock(mLock); |
| 404 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 405 | if (mSampleTimeEntries != NULL) { |
| 406 | return; |
| 407 | } |
| 408 | |
| 409 | mSampleTimeEntries = new SampleTimeEntry[mNumSampleSizes]; |
| 410 | |
| 411 | uint32_t sampleIndex = 0; |
| 412 | uint32_t sampleTime = 0; |
| 413 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 414 | for (uint32_t i = 0; i < mTimeToSampleCount; ++i) { |
| 415 | uint32_t n = mTimeToSample[2 * i]; |
| 416 | uint32_t delta = mTimeToSample[2 * i + 1]; |
| 417 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 418 | for (uint32_t j = 0; j < n; ++j) { |
| 419 | CHECK(sampleIndex < mNumSampleSizes); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 420 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 421 | mSampleTimeEntries[sampleIndex].mSampleIndex = sampleIndex; |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 422 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 423 | mSampleTimeEntries[sampleIndex].mCompositionTime = |
| 424 | sampleTime + getCompositionTimeOffset(sampleIndex); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 425 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 426 | ++sampleIndex; |
| 427 | sampleTime += delta; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 428 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 429 | } |
| 430 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 431 | qsort(mSampleTimeEntries, mNumSampleSizes, sizeof(SampleTimeEntry), |
| 432 | CompareIncreasingTime); |
| 433 | } |
| 434 | |
| 435 | status_t SampleTable::findSampleAtTime( |
| 436 | uint32_t req_time, uint32_t *sample_index, uint32_t flags) { |
| 437 | buildSampleEntriesTable(); |
| 438 | |
| 439 | uint32_t left = 0; |
| 440 | uint32_t right = mNumSampleSizes; |
| 441 | while (left < right) { |
| 442 | uint32_t center = (left + right) / 2; |
| 443 | uint32_t centerTime = mSampleTimeEntries[center].mCompositionTime; |
| 444 | |
| 445 | if (req_time < centerTime) { |
| 446 | right = center; |
| 447 | } else if (req_time > centerTime) { |
| 448 | left = center + 1; |
| 449 | } else { |
| 450 | left = center; |
| 451 | break; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | if (left == mNumSampleSizes) { |
Andreas Huber | e23a392 | 2011-04-27 15:00:29 -0700 | [diff] [blame] | 456 | if (flags == kFlagAfter) { |
| 457 | return ERROR_OUT_OF_RANGE; |
| 458 | } |
| 459 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 460 | --left; |
| 461 | } |
| 462 | |
| 463 | uint32_t closestIndex = left; |
| 464 | |
| 465 | switch (flags) { |
| 466 | case kFlagBefore: |
| 467 | { |
| 468 | while (closestIndex > 0 |
| 469 | && mSampleTimeEntries[closestIndex].mCompositionTime |
| 470 | > req_time) { |
| 471 | --closestIndex; |
| 472 | } |
| 473 | break; |
| 474 | } |
| 475 | |
| 476 | case kFlagAfter: |
| 477 | { |
| 478 | while (closestIndex + 1 < mNumSampleSizes |
| 479 | && mSampleTimeEntries[closestIndex].mCompositionTime |
| 480 | < req_time) { |
| 481 | ++closestIndex; |
| 482 | } |
| 483 | break; |
| 484 | } |
| 485 | |
| 486 | default: |
| 487 | { |
| 488 | CHECK(flags == kFlagClosest); |
| 489 | |
| 490 | if (closestIndex > 0) { |
| 491 | // Check left neighbour and pick closest. |
| 492 | uint32_t absdiff1 = |
| 493 | abs_difference( |
| 494 | mSampleTimeEntries[closestIndex].mCompositionTime, |
| 495 | req_time); |
| 496 | |
| 497 | uint32_t absdiff2 = |
| 498 | abs_difference( |
| 499 | mSampleTimeEntries[closestIndex - 1].mCompositionTime, |
| 500 | req_time); |
| 501 | |
| 502 | if (absdiff1 > absdiff2) { |
| 503 | closestIndex = closestIndex - 1; |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | break; |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | *sample_index = mSampleTimeEntries[closestIndex].mSampleIndex; |
| 512 | |
| 513 | return OK; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 514 | } |
| 515 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 516 | status_t SampleTable::findSyncSampleNear( |
| 517 | uint32_t start_sample_index, uint32_t *sample_index, uint32_t flags) { |
| 518 | Mutex::Autolock autoLock(mLock); |
| 519 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 520 | *sample_index = 0; |
| 521 | |
| 522 | if (mSyncSampleOffset < 0) { |
| 523 | // All samples are sync-samples. |
| 524 | *sample_index = start_sample_index; |
| 525 | return OK; |
| 526 | } |
| 527 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 528 | if (mNumSyncSamples == 0) { |
| 529 | *sample_index = 0; |
| 530 | return OK; |
| 531 | } |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 532 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 533 | uint32_t left = 0; |
| 534 | while (left < mNumSyncSamples) { |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 535 | uint32_t x = mSyncSamples[left]; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 536 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 537 | if (x >= start_sample_index) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 538 | break; |
| 539 | } |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 540 | |
| 541 | ++left; |
| 542 | } |
James Dong | 0950b4b | 2010-11-19 18:24:48 -0800 | [diff] [blame] | 543 | if (left > 0) { |
| 544 | --left; |
| 545 | } |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 546 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 547 | uint32_t x; |
| 548 | if (mDataSource->readAt( |
| 549 | mSyncSampleOffset + 8 + left * 4, &x, 4) != 4) { |
| 550 | return ERROR_IO; |
| 551 | } |
| 552 | |
| 553 | x = ntohl(x); |
| 554 | --x; |
| 555 | |
| 556 | if (left + 1 < mNumSyncSamples) { |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 557 | uint32_t y = mSyncSamples[left + 1]; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 558 | |
| 559 | // our sample lies between sync samples x and y. |
| 560 | |
| 561 | status_t err = mSampleIterator->seekTo(start_sample_index); |
| 562 | if (err != OK) { |
| 563 | return err; |
| 564 | } |
| 565 | |
| 566 | uint32_t sample_time = mSampleIterator->getSampleTime(); |
| 567 | |
| 568 | err = mSampleIterator->seekTo(x); |
| 569 | if (err != OK) { |
| 570 | return err; |
| 571 | } |
| 572 | uint32_t x_time = mSampleIterator->getSampleTime(); |
| 573 | |
| 574 | err = mSampleIterator->seekTo(y); |
| 575 | if (err != OK) { |
| 576 | return err; |
| 577 | } |
| 578 | |
| 579 | uint32_t y_time = mSampleIterator->getSampleTime(); |
| 580 | |
| 581 | if (abs_difference(x_time, sample_time) |
| 582 | > abs_difference(y_time, sample_time)) { |
| 583 | // Pick the sync sample closest (timewise) to the start-sample. |
| 584 | x = y; |
| 585 | ++left; |
| 586 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 587 | } |
| 588 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 589 | switch (flags) { |
| 590 | case kFlagBefore: |
| 591 | { |
| 592 | if (x > start_sample_index) { |
| 593 | CHECK(left > 0); |
| 594 | |
| 595 | if (mDataSource->readAt( |
| 596 | mSyncSampleOffset + 8 + (left - 1) * 4, &x, 4) != 4) { |
| 597 | return ERROR_IO; |
| 598 | } |
| 599 | |
| 600 | x = ntohl(x); |
| 601 | --x; |
| 602 | |
| 603 | CHECK(x <= start_sample_index); |
| 604 | } |
| 605 | break; |
| 606 | } |
| 607 | |
| 608 | case kFlagAfter: |
| 609 | { |
| 610 | if (x < start_sample_index) { |
| 611 | if (left + 1 >= mNumSyncSamples) { |
| 612 | return ERROR_OUT_OF_RANGE; |
| 613 | } |
| 614 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 615 | x = mSyncSamples[left + 1]; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 616 | |
| 617 | CHECK(x >= start_sample_index); |
| 618 | } |
| 619 | |
| 620 | break; |
| 621 | } |
| 622 | |
| 623 | default: |
| 624 | break; |
| 625 | } |
| 626 | |
| 627 | *sample_index = x; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 628 | |
| 629 | return OK; |
| 630 | } |
| 631 | |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 632 | status_t SampleTable::findThumbnailSample(uint32_t *sample_index) { |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 633 | Mutex::Autolock autoLock(mLock); |
| 634 | |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 635 | if (mSyncSampleOffset < 0) { |
| 636 | // All samples are sync-samples. |
| 637 | *sample_index = 0; |
| 638 | return OK; |
| 639 | } |
| 640 | |
| 641 | uint32_t bestSampleIndex = 0; |
| 642 | size_t maxSampleSize = 0; |
| 643 | |
| 644 | static const size_t kMaxNumSyncSamplesToScan = 20; |
| 645 | |
| 646 | // Consider the first kMaxNumSyncSamplesToScan sync samples and |
| 647 | // pick the one with the largest (compressed) size as the thumbnail. |
| 648 | |
| 649 | size_t numSamplesToScan = mNumSyncSamples; |
| 650 | if (numSamplesToScan > kMaxNumSyncSamplesToScan) { |
| 651 | numSamplesToScan = kMaxNumSyncSamplesToScan; |
| 652 | } |
| 653 | |
| 654 | for (size_t i = 0; i < numSamplesToScan; ++i) { |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 655 | uint32_t x = mSyncSamples[i]; |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 656 | |
| 657 | // Now x is a sample index. |
| 658 | size_t sampleSize; |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 659 | status_t err = getSampleSize_l(x, &sampleSize); |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 660 | if (err != OK) { |
| 661 | return err; |
| 662 | } |
| 663 | |
| 664 | if (i == 0 || sampleSize > maxSampleSize) { |
| 665 | bestSampleIndex = x; |
| 666 | maxSampleSize = sampleSize; |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | *sample_index = bestSampleIndex; |
| 671 | |
| 672 | return OK; |
| 673 | } |
| 674 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 675 | status_t SampleTable::getSampleSize_l( |
| 676 | uint32_t sampleIndex, size_t *sampleSize) { |
| 677 | return mSampleIterator->getSampleSizeDirect( |
| 678 | sampleIndex, sampleSize); |
| 679 | } |
| 680 | |
| 681 | status_t SampleTable::getMetaDataForSample( |
| 682 | uint32_t sampleIndex, |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 683 | off64_t *offset, |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 684 | size_t *size, |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 685 | uint32_t *compositionTime, |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 686 | bool *isSyncSample) { |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 687 | Mutex::Autolock autoLock(mLock); |
| 688 | |
| 689 | status_t err; |
| 690 | if ((err = mSampleIterator->seekTo(sampleIndex)) != OK) { |
| 691 | return err; |
| 692 | } |
| 693 | |
| 694 | if (offset) { |
| 695 | *offset = mSampleIterator->getSampleOffset(); |
| 696 | } |
| 697 | |
| 698 | if (size) { |
| 699 | *size = mSampleIterator->getSampleSize(); |
| 700 | } |
| 701 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 702 | if (compositionTime) { |
| 703 | *compositionTime = mSampleIterator->getSampleTime(); |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 704 | } |
| 705 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 706 | if (isSyncSample) { |
| 707 | *isSyncSample = false; |
| 708 | if (mSyncSampleOffset < 0) { |
| 709 | // Every sample is a sync sample. |
| 710 | *isSyncSample = true; |
| 711 | } else { |
| 712 | size_t i = (mLastSyncSampleIndex < mNumSyncSamples) |
| 713 | && (mSyncSamples[mLastSyncSampleIndex] <= sampleIndex) |
| 714 | ? mLastSyncSampleIndex : 0; |
| 715 | |
| 716 | while (i < mNumSyncSamples && mSyncSamples[i] < sampleIndex) { |
| 717 | ++i; |
| 718 | } |
| 719 | |
| 720 | if (i < mNumSyncSamples && mSyncSamples[i] == sampleIndex) { |
| 721 | *isSyncSample = true; |
| 722 | } |
| 723 | |
| 724 | mLastSyncSampleIndex = i; |
| 725 | } |
| 726 | } |
| 727 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 728 | return OK; |
| 729 | } |
| 730 | |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 731 | uint32_t SampleTable::getCompositionTimeOffset(uint32_t sampleIndex) const { |
| 732 | if (mCompositionTimeDeltaEntries == NULL) { |
| 733 | return 0; |
| 734 | } |
| 735 | |
| 736 | uint32_t curSample = 0; |
| 737 | for (size_t i = 0; i < mNumCompositionTimeDeltaEntries; ++i) { |
| 738 | uint32_t sampleCount = mCompositionTimeDeltaEntries[2 * i]; |
| 739 | |
| 740 | if (sampleIndex < curSample + sampleCount) { |
| 741 | uint32_t sampleDelta = mCompositionTimeDeltaEntries[2 * i + 1]; |
| 742 | |
| 743 | return sampleDelta; |
| 744 | } |
| 745 | |
| 746 | curSample += sampleCount; |
| 747 | } |
| 748 | |
| 749 | return 0; |
| 750 | } |
| 751 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 752 | } // namespace android |
| 753 | |