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 | |
Andreas Huber | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 26 | #include <media/stagefright/foundation/ADebug.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 27 | #include <media/stagefright/DataSource.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 | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 43 | struct SampleTable::CompositionDeltaLookup { |
| 44 | CompositionDeltaLookup(); |
| 45 | |
| 46 | void setEntries( |
| 47 | const uint32_t *deltaEntries, size_t numDeltaEntries); |
| 48 | |
| 49 | uint32_t getCompositionTimeOffset(uint32_t sampleIndex); |
| 50 | |
| 51 | private: |
| 52 | Mutex mLock; |
| 53 | |
| 54 | const uint32_t *mDeltaEntries; |
| 55 | size_t mNumDeltaEntries; |
| 56 | |
| 57 | size_t mCurrentDeltaEntry; |
| 58 | size_t mCurrentEntrySampleIndex; |
| 59 | |
| 60 | DISALLOW_EVIL_CONSTRUCTORS(CompositionDeltaLookup); |
| 61 | }; |
| 62 | |
| 63 | SampleTable::CompositionDeltaLookup::CompositionDeltaLookup() |
| 64 | : mDeltaEntries(NULL), |
| 65 | mNumDeltaEntries(0), |
| 66 | mCurrentDeltaEntry(0), |
| 67 | mCurrentEntrySampleIndex(0) { |
| 68 | } |
| 69 | |
| 70 | void SampleTable::CompositionDeltaLookup::setEntries( |
| 71 | const uint32_t *deltaEntries, size_t numDeltaEntries) { |
| 72 | Mutex::Autolock autolock(mLock); |
| 73 | |
| 74 | mDeltaEntries = deltaEntries; |
| 75 | mNumDeltaEntries = numDeltaEntries; |
| 76 | mCurrentDeltaEntry = 0; |
| 77 | mCurrentEntrySampleIndex = 0; |
| 78 | } |
| 79 | |
| 80 | uint32_t SampleTable::CompositionDeltaLookup::getCompositionTimeOffset( |
| 81 | uint32_t sampleIndex) { |
| 82 | Mutex::Autolock autolock(mLock); |
| 83 | |
| 84 | if (mDeltaEntries == NULL) { |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | if (sampleIndex < mCurrentEntrySampleIndex) { |
| 89 | mCurrentDeltaEntry = 0; |
| 90 | mCurrentEntrySampleIndex = 0; |
| 91 | } |
| 92 | |
| 93 | while (mCurrentDeltaEntry < mNumDeltaEntries) { |
| 94 | uint32_t sampleCount = mDeltaEntries[2 * mCurrentDeltaEntry]; |
| 95 | if (sampleIndex < mCurrentEntrySampleIndex + sampleCount) { |
| 96 | return mDeltaEntries[2 * mCurrentDeltaEntry + 1]; |
| 97 | } |
| 98 | |
| 99 | mCurrentEntrySampleIndex += sampleCount; |
| 100 | ++mCurrentDeltaEntry; |
| 101 | } |
| 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | //////////////////////////////////////////////////////////////////////////////// |
| 107 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 108 | SampleTable::SampleTable(const sp<DataSource> &source) |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 109 | : mDataSource(source), |
| 110 | mChunkOffsetOffset(-1), |
| 111 | mChunkOffsetType(0), |
| 112 | mNumChunkOffsets(0), |
| 113 | mSampleToChunkOffset(-1), |
| 114 | mNumSampleToChunkOffsets(0), |
| 115 | mSampleSizeOffset(-1), |
| 116 | mSampleSizeFieldSize(0), |
| 117 | mDefaultSampleSize(0), |
| 118 | mNumSampleSizes(0), |
| 119 | mTimeToSampleCount(0), |
| 120 | mTimeToSample(NULL), |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 121 | mSampleTimeEntries(NULL), |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 122 | mCompositionTimeDeltaEntries(NULL), |
| 123 | mNumCompositionTimeDeltaEntries(0), |
Andreas Huber | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 124 | mCompositionDeltaLookup(new CompositionDeltaLookup), |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 125 | mSyncSampleOffset(-1), |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 126 | mNumSyncSamples(0), |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 127 | mSyncSamples(NULL), |
| 128 | mLastSyncSampleIndex(0), |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 129 | mSampleToChunkEntries(NULL) { |
| 130 | mSampleIterator = new SampleIterator(this); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | SampleTable::~SampleTable() { |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 134 | delete[] mSampleToChunkEntries; |
| 135 | mSampleToChunkEntries = NULL; |
| 136 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 137 | delete[] mSyncSamples; |
| 138 | mSyncSamples = NULL; |
| 139 | |
Andreas Huber | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 140 | delete mCompositionDeltaLookup; |
| 141 | mCompositionDeltaLookup = NULL; |
| 142 | |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 143 | delete[] mCompositionTimeDeltaEntries; |
| 144 | mCompositionTimeDeltaEntries = NULL; |
| 145 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 146 | delete[] mSampleTimeEntries; |
| 147 | mSampleTimeEntries = NULL; |
| 148 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 149 | delete[] mTimeToSample; |
| 150 | mTimeToSample = NULL; |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 151 | |
| 152 | delete mSampleIterator; |
| 153 | mSampleIterator = NULL; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 154 | } |
| 155 | |
Andreas Huber | 987cb2e | 2011-08-17 13:03:51 -0700 | [diff] [blame] | 156 | bool SampleTable::isValid() const { |
| 157 | return mChunkOffsetOffset >= 0 |
| 158 | && mSampleToChunkOffset >= 0 |
| 159 | && mSampleSizeOffset >= 0 |
| 160 | && mTimeToSample != NULL; |
| 161 | } |
| 162 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 163 | status_t SampleTable::setChunkOffsetParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 164 | uint32_t type, off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 165 | if (mChunkOffsetOffset >= 0) { |
| 166 | return ERROR_MALFORMED; |
| 167 | } |
| 168 | |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 169 | CHECK(type == kChunkOffsetType32 || type == kChunkOffsetType64); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 170 | |
| 171 | mChunkOffsetOffset = data_offset; |
| 172 | mChunkOffsetType = type; |
| 173 | |
| 174 | if (data_size < 8) { |
| 175 | return ERROR_MALFORMED; |
| 176 | } |
| 177 | |
| 178 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 179 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 180 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 181 | return ERROR_IO; |
| 182 | } |
| 183 | |
| 184 | if (U32_AT(header) != 0) { |
| 185 | // Expected version = 0, flags = 0. |
| 186 | return ERROR_MALFORMED; |
| 187 | } |
| 188 | |
| 189 | mNumChunkOffsets = U32_AT(&header[4]); |
| 190 | |
| 191 | if (mChunkOffsetType == kChunkOffsetType32) { |
| 192 | if (data_size < 8 + mNumChunkOffsets * 4) { |
| 193 | return ERROR_MALFORMED; |
| 194 | } |
| 195 | } else { |
| 196 | if (data_size < 8 + mNumChunkOffsets * 8) { |
| 197 | return ERROR_MALFORMED; |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | return OK; |
| 202 | } |
| 203 | |
| 204 | status_t SampleTable::setSampleToChunkParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 205 | off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 206 | if (mSampleToChunkOffset >= 0) { |
| 207 | return ERROR_MALFORMED; |
| 208 | } |
| 209 | |
| 210 | mSampleToChunkOffset = data_offset; |
| 211 | |
| 212 | if (data_size < 8) { |
| 213 | return ERROR_MALFORMED; |
| 214 | } |
| 215 | |
| 216 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 217 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 218 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 219 | return ERROR_IO; |
| 220 | } |
| 221 | |
| 222 | if (U32_AT(header) != 0) { |
| 223 | // Expected version = 0, flags = 0. |
| 224 | return ERROR_MALFORMED; |
| 225 | } |
| 226 | |
| 227 | mNumSampleToChunkOffsets = U32_AT(&header[4]); |
| 228 | |
| 229 | if (data_size < 8 + mNumSampleToChunkOffsets * 12) { |
| 230 | return ERROR_MALFORMED; |
| 231 | } |
| 232 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 233 | mSampleToChunkEntries = |
| 234 | new SampleToChunkEntry[mNumSampleToChunkOffsets]; |
| 235 | |
| 236 | for (uint32_t i = 0; i < mNumSampleToChunkOffsets; ++i) { |
| 237 | uint8_t buffer[12]; |
| 238 | if (mDataSource->readAt( |
| 239 | mSampleToChunkOffset + 8 + i * 12, buffer, sizeof(buffer)) |
| 240 | != (ssize_t)sizeof(buffer)) { |
| 241 | return ERROR_IO; |
| 242 | } |
| 243 | |
| 244 | CHECK(U32_AT(buffer) >= 1); // chunk index is 1 based in the spec. |
| 245 | |
| 246 | // We want the chunk index to be 0-based. |
| 247 | mSampleToChunkEntries[i].startChunk = U32_AT(buffer) - 1; |
| 248 | mSampleToChunkEntries[i].samplesPerChunk = U32_AT(&buffer[4]); |
| 249 | mSampleToChunkEntries[i].chunkDesc = U32_AT(&buffer[8]); |
| 250 | } |
| 251 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 252 | return OK; |
| 253 | } |
| 254 | |
| 255 | status_t SampleTable::setSampleSizeParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 256 | uint32_t type, off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 257 | if (mSampleSizeOffset >= 0) { |
| 258 | return ERROR_MALFORMED; |
| 259 | } |
| 260 | |
Andreas Huber | b5ceb9e | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 261 | CHECK(type == kSampleSizeType32 || type == kSampleSizeTypeCompact); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 262 | |
| 263 | mSampleSizeOffset = data_offset; |
| 264 | |
| 265 | if (data_size < 12) { |
| 266 | return ERROR_MALFORMED; |
| 267 | } |
| 268 | |
| 269 | uint8_t header[12]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 270 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 271 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 272 | return ERROR_IO; |
| 273 | } |
| 274 | |
| 275 | if (U32_AT(header) != 0) { |
| 276 | // Expected version = 0, flags = 0. |
| 277 | return ERROR_MALFORMED; |
| 278 | } |
| 279 | |
| 280 | mDefaultSampleSize = U32_AT(&header[4]); |
| 281 | mNumSampleSizes = U32_AT(&header[8]); |
| 282 | |
| 283 | if (type == kSampleSizeType32) { |
| 284 | mSampleSizeFieldSize = 32; |
| 285 | |
| 286 | if (mDefaultSampleSize != 0) { |
| 287 | return OK; |
| 288 | } |
| 289 | |
| 290 | if (data_size < 12 + mNumSampleSizes * 4) { |
| 291 | return ERROR_MALFORMED; |
| 292 | } |
| 293 | } else { |
| 294 | if ((mDefaultSampleSize & 0xffffff00) != 0) { |
| 295 | // The high 24 bits are reserved and must be 0. |
| 296 | return ERROR_MALFORMED; |
| 297 | } |
| 298 | |
Andreas Huber | 0a6f09e | 2011-05-12 13:38:20 -0700 | [diff] [blame] | 299 | mSampleSizeFieldSize = mDefaultSampleSize & 0xff; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 300 | mDefaultSampleSize = 0; |
| 301 | |
| 302 | if (mSampleSizeFieldSize != 4 && mSampleSizeFieldSize != 8 |
| 303 | && mSampleSizeFieldSize != 16) { |
| 304 | return ERROR_MALFORMED; |
| 305 | } |
| 306 | |
| 307 | if (data_size < 12 + (mNumSampleSizes * mSampleSizeFieldSize + 4) / 8) { |
| 308 | return ERROR_MALFORMED; |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | return OK; |
| 313 | } |
| 314 | |
| 315 | status_t SampleTable::setTimeToSampleParams( |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 316 | off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 317 | if (mTimeToSample != NULL || data_size < 8) { |
| 318 | return ERROR_MALFORMED; |
| 319 | } |
| 320 | |
| 321 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 322 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 323 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 324 | return ERROR_IO; |
| 325 | } |
| 326 | |
| 327 | if (U32_AT(header) != 0) { |
| 328 | // Expected version = 0, flags = 0. |
| 329 | return ERROR_MALFORMED; |
| 330 | } |
| 331 | |
| 332 | mTimeToSampleCount = U32_AT(&header[4]); |
| 333 | mTimeToSample = new uint32_t[mTimeToSampleCount * 2]; |
| 334 | |
| 335 | size_t size = sizeof(uint32_t) * mTimeToSampleCount * 2; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 336 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 337 | data_offset + 8, mTimeToSample, size) < (ssize_t)size) { |
| 338 | return ERROR_IO; |
| 339 | } |
| 340 | |
| 341 | for (uint32_t i = 0; i < mTimeToSampleCount * 2; ++i) { |
| 342 | mTimeToSample[i] = ntohl(mTimeToSample[i]); |
| 343 | } |
| 344 | |
| 345 | return OK; |
| 346 | } |
| 347 | |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 348 | status_t SampleTable::setCompositionTimeToSampleParams( |
| 349 | off64_t data_offset, size_t data_size) { |
Steve Block | 6215d3f | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 350 | ALOGI("There are reordered frames present."); |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 351 | |
| 352 | if (mCompositionTimeDeltaEntries != NULL || data_size < 8) { |
| 353 | return ERROR_MALFORMED; |
| 354 | } |
| 355 | |
| 356 | uint8_t header[8]; |
| 357 | if (mDataSource->readAt( |
| 358 | data_offset, header, sizeof(header)) |
| 359 | < (ssize_t)sizeof(header)) { |
| 360 | return ERROR_IO; |
| 361 | } |
| 362 | |
| 363 | if (U32_AT(header) != 0) { |
| 364 | // Expected version = 0, flags = 0. |
| 365 | return ERROR_MALFORMED; |
| 366 | } |
| 367 | |
| 368 | size_t numEntries = U32_AT(&header[4]); |
| 369 | |
| 370 | if (data_size != (numEntries + 1) * 8) { |
| 371 | return ERROR_MALFORMED; |
| 372 | } |
| 373 | |
| 374 | mNumCompositionTimeDeltaEntries = numEntries; |
| 375 | mCompositionTimeDeltaEntries = new uint32_t[2 * numEntries]; |
| 376 | |
| 377 | if (mDataSource->readAt( |
| 378 | data_offset + 8, mCompositionTimeDeltaEntries, numEntries * 8) |
| 379 | < (ssize_t)numEntries * 8) { |
| 380 | delete[] mCompositionTimeDeltaEntries; |
| 381 | mCompositionTimeDeltaEntries = NULL; |
| 382 | |
| 383 | return ERROR_IO; |
| 384 | } |
| 385 | |
| 386 | for (size_t i = 0; i < 2 * numEntries; ++i) { |
| 387 | mCompositionTimeDeltaEntries[i] = ntohl(mCompositionTimeDeltaEntries[i]); |
| 388 | } |
| 389 | |
Andreas Huber | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 390 | mCompositionDeltaLookup->setEntries( |
| 391 | mCompositionTimeDeltaEntries, mNumCompositionTimeDeltaEntries); |
| 392 | |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 393 | return OK; |
| 394 | } |
| 395 | |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 396 | status_t SampleTable::setSyncSampleParams(off64_t data_offset, size_t data_size) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 397 | if (mSyncSampleOffset >= 0 || data_size < 8) { |
| 398 | return ERROR_MALFORMED; |
| 399 | } |
| 400 | |
| 401 | mSyncSampleOffset = data_offset; |
| 402 | |
| 403 | uint8_t header[8]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 404 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 405 | data_offset, header, sizeof(header)) < (ssize_t)sizeof(header)) { |
| 406 | return ERROR_IO; |
| 407 | } |
| 408 | |
| 409 | if (U32_AT(header) != 0) { |
| 410 | // Expected version = 0, flags = 0. |
| 411 | return ERROR_MALFORMED; |
| 412 | } |
| 413 | |
| 414 | mNumSyncSamples = U32_AT(&header[4]); |
| 415 | |
| 416 | if (mNumSyncSamples < 2) { |
Steve Block | 71f2cf1 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 417 | ALOGV("Table of sync samples is empty or has only a single entry!"); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 418 | } |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 419 | |
| 420 | mSyncSamples = new uint32_t[mNumSyncSamples]; |
| 421 | size_t size = mNumSyncSamples * sizeof(uint32_t); |
| 422 | if (mDataSource->readAt(mSyncSampleOffset + 8, mSyncSamples, size) |
| 423 | != (ssize_t)size) { |
| 424 | return ERROR_IO; |
| 425 | } |
| 426 | |
| 427 | for (size_t i = 0; i < mNumSyncSamples; ++i) { |
| 428 | mSyncSamples[i] = ntohl(mSyncSamples[i]) - 1; |
| 429 | } |
| 430 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 431 | return OK; |
| 432 | } |
| 433 | |
| 434 | uint32_t SampleTable::countChunkOffsets() const { |
| 435 | return mNumChunkOffsets; |
| 436 | } |
| 437 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 438 | uint32_t SampleTable::countSamples() const { |
| 439 | return mNumSampleSizes; |
| 440 | } |
| 441 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 442 | status_t SampleTable::getMaxSampleSize(size_t *max_size) { |
| 443 | Mutex::Autolock autoLock(mLock); |
| 444 | |
| 445 | *max_size = 0; |
| 446 | |
| 447 | for (uint32_t i = 0; i < mNumSampleSizes; ++i) { |
| 448 | size_t sample_size; |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 449 | status_t err = getSampleSize_l(i, &sample_size); |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 450 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 451 | if (err != OK) { |
| 452 | return err; |
| 453 | } |
| 454 | |
| 455 | if (sample_size > *max_size) { |
| 456 | *max_size = sample_size; |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | return OK; |
| 461 | } |
| 462 | |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 463 | uint32_t abs_difference(uint32_t time1, uint32_t time2) { |
| 464 | return time1 > time2 ? time1 - time2 : time2 - time1; |
| 465 | } |
| 466 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 467 | // static |
| 468 | int SampleTable::CompareIncreasingTime(const void *_a, const void *_b) { |
| 469 | const SampleTimeEntry *a = (const SampleTimeEntry *)_a; |
| 470 | const SampleTimeEntry *b = (const SampleTimeEntry *)_b; |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 471 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 472 | if (a->mCompositionTime < b->mCompositionTime) { |
| 473 | return -1; |
| 474 | } else if (a->mCompositionTime > b->mCompositionTime) { |
| 475 | return 1; |
| 476 | } |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 477 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 478 | return 0; |
| 479 | } |
| 480 | |
| 481 | void SampleTable::buildSampleEntriesTable() { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 482 | Mutex::Autolock autoLock(mLock); |
| 483 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 484 | if (mSampleTimeEntries != NULL) { |
| 485 | return; |
| 486 | } |
| 487 | |
| 488 | mSampleTimeEntries = new SampleTimeEntry[mNumSampleSizes]; |
| 489 | |
| 490 | uint32_t sampleIndex = 0; |
| 491 | uint32_t sampleTime = 0; |
| 492 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 493 | for (uint32_t i = 0; i < mTimeToSampleCount; ++i) { |
| 494 | uint32_t n = mTimeToSample[2 * i]; |
| 495 | uint32_t delta = mTimeToSample[2 * i + 1]; |
| 496 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 497 | for (uint32_t j = 0; j < n; ++j) { |
Andreas Huber | 727863d2 | 2011-06-21 11:38:01 -0700 | [diff] [blame] | 498 | if (sampleIndex < mNumSampleSizes) { |
| 499 | // Technically this should always be the case if the file |
| 500 | // is well-formed, but you know... there's (gasp) malformed |
| 501 | // content out there. |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 502 | |
Andreas Huber | 727863d2 | 2011-06-21 11:38:01 -0700 | [diff] [blame] | 503 | mSampleTimeEntries[sampleIndex].mSampleIndex = sampleIndex; |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 504 | |
Andreas Huber | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 505 | uint32_t compTimeDelta = |
| 506 | mCompositionDeltaLookup->getCompositionTimeOffset( |
| 507 | sampleIndex); |
| 508 | |
Andreas Huber | 727863d2 | 2011-06-21 11:38:01 -0700 | [diff] [blame] | 509 | mSampleTimeEntries[sampleIndex].mCompositionTime = |
Andreas Huber | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 510 | sampleTime + compTimeDelta; |
Andreas Huber | 727863d2 | 2011-06-21 11:38:01 -0700 | [diff] [blame] | 511 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 512 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 513 | ++sampleIndex; |
| 514 | sampleTime += delta; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 515 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 516 | } |
| 517 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 518 | qsort(mSampleTimeEntries, mNumSampleSizes, sizeof(SampleTimeEntry), |
| 519 | CompareIncreasingTime); |
| 520 | } |
| 521 | |
| 522 | status_t SampleTable::findSampleAtTime( |
| 523 | uint32_t req_time, uint32_t *sample_index, uint32_t flags) { |
| 524 | buildSampleEntriesTable(); |
| 525 | |
| 526 | uint32_t left = 0; |
| 527 | uint32_t right = mNumSampleSizes; |
| 528 | while (left < right) { |
| 529 | uint32_t center = (left + right) / 2; |
| 530 | uint32_t centerTime = mSampleTimeEntries[center].mCompositionTime; |
| 531 | |
| 532 | if (req_time < centerTime) { |
| 533 | right = center; |
| 534 | } else if (req_time > centerTime) { |
| 535 | left = center + 1; |
| 536 | } else { |
| 537 | left = center; |
| 538 | break; |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | if (left == mNumSampleSizes) { |
Andreas Huber | e23a392 | 2011-04-27 15:00:29 -0700 | [diff] [blame] | 543 | if (flags == kFlagAfter) { |
| 544 | return ERROR_OUT_OF_RANGE; |
| 545 | } |
| 546 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 547 | --left; |
| 548 | } |
| 549 | |
| 550 | uint32_t closestIndex = left; |
| 551 | |
| 552 | switch (flags) { |
| 553 | case kFlagBefore: |
| 554 | { |
| 555 | while (closestIndex > 0 |
| 556 | && mSampleTimeEntries[closestIndex].mCompositionTime |
| 557 | > req_time) { |
| 558 | --closestIndex; |
| 559 | } |
| 560 | break; |
| 561 | } |
| 562 | |
| 563 | case kFlagAfter: |
| 564 | { |
| 565 | while (closestIndex + 1 < mNumSampleSizes |
| 566 | && mSampleTimeEntries[closestIndex].mCompositionTime |
| 567 | < req_time) { |
| 568 | ++closestIndex; |
| 569 | } |
| 570 | break; |
| 571 | } |
| 572 | |
| 573 | default: |
| 574 | { |
| 575 | CHECK(flags == kFlagClosest); |
| 576 | |
| 577 | if (closestIndex > 0) { |
| 578 | // Check left neighbour and pick closest. |
| 579 | uint32_t absdiff1 = |
| 580 | abs_difference( |
| 581 | mSampleTimeEntries[closestIndex].mCompositionTime, |
| 582 | req_time); |
| 583 | |
| 584 | uint32_t absdiff2 = |
| 585 | abs_difference( |
| 586 | mSampleTimeEntries[closestIndex - 1].mCompositionTime, |
| 587 | req_time); |
| 588 | |
| 589 | if (absdiff1 > absdiff2) { |
| 590 | closestIndex = closestIndex - 1; |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | break; |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | *sample_index = mSampleTimeEntries[closestIndex].mSampleIndex; |
| 599 | |
| 600 | return OK; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 601 | } |
| 602 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 603 | status_t SampleTable::findSyncSampleNear( |
| 604 | uint32_t start_sample_index, uint32_t *sample_index, uint32_t flags) { |
| 605 | Mutex::Autolock autoLock(mLock); |
| 606 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 607 | *sample_index = 0; |
| 608 | |
| 609 | if (mSyncSampleOffset < 0) { |
| 610 | // All samples are sync-samples. |
| 611 | *sample_index = start_sample_index; |
| 612 | return OK; |
| 613 | } |
| 614 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 615 | if (mNumSyncSamples == 0) { |
| 616 | *sample_index = 0; |
| 617 | return OK; |
| 618 | } |
Andreas Huber | 140d4ed | 2010-01-14 11:36:45 -0800 | [diff] [blame] | 619 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 620 | uint32_t left = 0; |
Andreas Huber | 43b2829 | 2011-11-07 11:38:14 -0800 | [diff] [blame] | 621 | uint32_t right = mNumSyncSamples; |
| 622 | while (left < right) { |
| 623 | uint32_t center = left + (right - left) / 2; |
| 624 | uint32_t x = mSyncSamples[center]; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 625 | |
Andreas Huber | 43b2829 | 2011-11-07 11:38:14 -0800 | [diff] [blame] | 626 | if (start_sample_index < x) { |
| 627 | right = center; |
| 628 | } else if (start_sample_index > x) { |
| 629 | left = center + 1; |
| 630 | } else { |
| 631 | left = center; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 632 | break; |
| 633 | } |
James Dong | 0950b4b | 2010-11-19 18:24:48 -0800 | [diff] [blame] | 634 | } |
Hong Teng | a76f626 | 2011-12-15 16:56:49 -0800 | [diff] [blame] | 635 | if (left == mNumSyncSamples) { |
| 636 | if (flags == kFlagAfter) { |
Steve Block | 3762c31 | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 637 | ALOGE("tried to find a sync frame after the last one: %d", left); |
Hong Teng | a76f626 | 2011-12-15 16:56:49 -0800 | [diff] [blame] | 638 | return ERROR_OUT_OF_RANGE; |
| 639 | } |
| 640 | left = left - 1; |
| 641 | } |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 642 | |
Andreas Huber | 43b2829 | 2011-11-07 11:38:14 -0800 | [diff] [blame] | 643 | // Now ssi[left] is the sync sample index just before (or at) |
| 644 | // start_sample_index. |
| 645 | // Also start_sample_index < ssi[left + 1], if left + 1 < mNumSyncSamples. |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 646 | |
Andreas Huber | 43b2829 | 2011-11-07 11:38:14 -0800 | [diff] [blame] | 647 | uint32_t x = mSyncSamples[left]; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 648 | |
| 649 | if (left + 1 < mNumSyncSamples) { |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 650 | uint32_t y = mSyncSamples[left + 1]; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 651 | |
| 652 | // our sample lies between sync samples x and y. |
| 653 | |
| 654 | status_t err = mSampleIterator->seekTo(start_sample_index); |
| 655 | if (err != OK) { |
| 656 | return err; |
| 657 | } |
| 658 | |
| 659 | uint32_t sample_time = mSampleIterator->getSampleTime(); |
| 660 | |
| 661 | err = mSampleIterator->seekTo(x); |
| 662 | if (err != OK) { |
| 663 | return err; |
| 664 | } |
| 665 | uint32_t x_time = mSampleIterator->getSampleTime(); |
| 666 | |
| 667 | err = mSampleIterator->seekTo(y); |
| 668 | if (err != OK) { |
| 669 | return err; |
| 670 | } |
| 671 | |
| 672 | uint32_t y_time = mSampleIterator->getSampleTime(); |
| 673 | |
| 674 | if (abs_difference(x_time, sample_time) |
| 675 | > abs_difference(y_time, sample_time)) { |
| 676 | // Pick the sync sample closest (timewise) to the start-sample. |
| 677 | x = y; |
| 678 | ++left; |
| 679 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 680 | } |
| 681 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 682 | switch (flags) { |
| 683 | case kFlagBefore: |
| 684 | { |
| 685 | if (x > start_sample_index) { |
| 686 | CHECK(left > 0); |
| 687 | |
Andreas Huber | 43b2829 | 2011-11-07 11:38:14 -0800 | [diff] [blame] | 688 | x = mSyncSamples[left - 1]; |
| 689 | |
| 690 | if (x > start_sample_index) { |
| 691 | // The table of sync sample indices was not sorted |
| 692 | // properly. |
| 693 | return ERROR_MALFORMED; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 694 | } |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 695 | } |
| 696 | break; |
| 697 | } |
| 698 | |
| 699 | case kFlagAfter: |
| 700 | { |
| 701 | if (x < start_sample_index) { |
| 702 | if (left + 1 >= mNumSyncSamples) { |
| 703 | return ERROR_OUT_OF_RANGE; |
| 704 | } |
| 705 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 706 | x = mSyncSamples[left + 1]; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 707 | |
Andreas Huber | 43b2829 | 2011-11-07 11:38:14 -0800 | [diff] [blame] | 708 | if (x < start_sample_index) { |
| 709 | // The table of sync sample indices was not sorted |
| 710 | // properly. |
| 711 | return ERROR_MALFORMED; |
| 712 | } |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | break; |
| 716 | } |
| 717 | |
| 718 | default: |
| 719 | break; |
| 720 | } |
| 721 | |
| 722 | *sample_index = x; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 723 | |
| 724 | return OK; |
| 725 | } |
| 726 | |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 727 | status_t SampleTable::findThumbnailSample(uint32_t *sample_index) { |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 728 | Mutex::Autolock autoLock(mLock); |
| 729 | |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 730 | if (mSyncSampleOffset < 0) { |
| 731 | // All samples are sync-samples. |
| 732 | *sample_index = 0; |
| 733 | return OK; |
| 734 | } |
| 735 | |
| 736 | uint32_t bestSampleIndex = 0; |
| 737 | size_t maxSampleSize = 0; |
| 738 | |
| 739 | static const size_t kMaxNumSyncSamplesToScan = 20; |
| 740 | |
| 741 | // Consider the first kMaxNumSyncSamplesToScan sync samples and |
| 742 | // pick the one with the largest (compressed) size as the thumbnail. |
| 743 | |
| 744 | size_t numSamplesToScan = mNumSyncSamples; |
| 745 | if (numSamplesToScan > kMaxNumSyncSamplesToScan) { |
| 746 | numSamplesToScan = kMaxNumSyncSamplesToScan; |
| 747 | } |
| 748 | |
| 749 | for (size_t i = 0; i < numSamplesToScan; ++i) { |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 750 | uint32_t x = mSyncSamples[i]; |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 751 | |
| 752 | // Now x is a sample index. |
| 753 | size_t sampleSize; |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 754 | status_t err = getSampleSize_l(x, &sampleSize); |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 755 | if (err != OK) { |
| 756 | return err; |
| 757 | } |
| 758 | |
| 759 | if (i == 0 || sampleSize > maxSampleSize) { |
| 760 | bestSampleIndex = x; |
| 761 | maxSampleSize = sampleSize; |
| 762 | } |
| 763 | } |
| 764 | |
| 765 | *sample_index = bestSampleIndex; |
| 766 | |
| 767 | return OK; |
| 768 | } |
| 769 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 770 | status_t SampleTable::getSampleSize_l( |
| 771 | uint32_t sampleIndex, size_t *sampleSize) { |
| 772 | return mSampleIterator->getSampleSizeDirect( |
| 773 | sampleIndex, sampleSize); |
| 774 | } |
| 775 | |
| 776 | status_t SampleTable::getMetaDataForSample( |
| 777 | uint32_t sampleIndex, |
James Dong | b1262a8 | 2010-11-16 14:04:54 -0800 | [diff] [blame] | 778 | off64_t *offset, |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 779 | size_t *size, |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 780 | uint32_t *compositionTime, |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 781 | bool *isSyncSample) { |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 782 | Mutex::Autolock autoLock(mLock); |
| 783 | |
| 784 | status_t err; |
| 785 | if ((err = mSampleIterator->seekTo(sampleIndex)) != OK) { |
| 786 | return err; |
| 787 | } |
| 788 | |
| 789 | if (offset) { |
| 790 | *offset = mSampleIterator->getSampleOffset(); |
| 791 | } |
| 792 | |
| 793 | if (size) { |
| 794 | *size = mSampleIterator->getSampleSize(); |
| 795 | } |
| 796 | |
Andreas Huber | 44fdac0 | 2011-04-15 11:52:29 -0700 | [diff] [blame] | 797 | if (compositionTime) { |
| 798 | *compositionTime = mSampleIterator->getSampleTime(); |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 799 | } |
| 800 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 801 | if (isSyncSample) { |
| 802 | *isSyncSample = false; |
| 803 | if (mSyncSampleOffset < 0) { |
| 804 | // Every sample is a sync sample. |
| 805 | *isSyncSample = true; |
| 806 | } else { |
| 807 | size_t i = (mLastSyncSampleIndex < mNumSyncSamples) |
| 808 | && (mSyncSamples[mLastSyncSampleIndex] <= sampleIndex) |
| 809 | ? mLastSyncSampleIndex : 0; |
| 810 | |
| 811 | while (i < mNumSyncSamples && mSyncSamples[i] < sampleIndex) { |
| 812 | ++i; |
| 813 | } |
| 814 | |
| 815 | if (i < mNumSyncSamples && mSyncSamples[i] == sampleIndex) { |
| 816 | *isSyncSample = true; |
| 817 | } |
| 818 | |
| 819 | mLastSyncSampleIndex = i; |
| 820 | } |
| 821 | } |
| 822 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 823 | return OK; |
| 824 | } |
| 825 | |
Andreas Huber | abc63e7 | 2011-09-19 12:18:47 -0700 | [diff] [blame] | 826 | uint32_t SampleTable::getCompositionTimeOffset(uint32_t sampleIndex) { |
| 827 | return mCompositionDeltaLookup->getCompositionTimeOffset(sampleIndex); |
Andreas Huber | bd352c3 | 2011-02-03 13:18:16 -0800 | [diff] [blame] | 828 | } |
| 829 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 830 | } // namespace android |
| 831 | |