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 "MPEG4Extractor" |
| 18 | #include <utils/Log.h> |
| 19 | |
Andreas Huber | 57515f3 | 2009-10-23 09:55:10 -0700 | [diff] [blame] | 20 | #include "include/MPEG4Extractor.h" |
Andreas Huber | bd7b43b | 2009-10-13 10:22:55 -0700 | [diff] [blame] | 21 | #include "include/SampleTable.h" |
| 22 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 23 | #include <arpa/inet.h> |
| 24 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 25 | #include <ctype.h> |
| 26 | #include <stdint.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <string.h> |
| 29 | |
Andreas Huber | 31dc911 | 2010-11-04 11:50:27 -0700 | [diff] [blame] | 30 | #include <media/stagefright/foundation/ADebug.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 31 | #include <media/stagefright/DataSource.h> |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 32 | #include "include/ESDS.h" |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 33 | #include <media/stagefright/MediaBuffer.h> |
| 34 | #include <media/stagefright/MediaBufferGroup.h> |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 35 | #include <media/stagefright/MediaDefs.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 36 | #include <media/stagefright/MediaSource.h> |
| 37 | #include <media/stagefright/MetaData.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 38 | #include <media/stagefright/Utils.h> |
| 39 | #include <utils/String8.h> |
| 40 | |
| 41 | namespace android { |
| 42 | |
| 43 | class MPEG4Source : public MediaSource { |
| 44 | public: |
| 45 | // Caller retains ownership of both "dataSource" and "sampleTable". |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 46 | MPEG4Source(const sp<MetaData> &format, |
| 47 | const sp<DataSource> &dataSource, |
Andreas Huber | fa8de75 | 2009-10-08 10:07:49 -0700 | [diff] [blame] | 48 | int32_t timeScale, |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 49 | const sp<SampleTable> &sampleTable); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 50 | |
| 51 | virtual status_t start(MetaData *params = NULL); |
| 52 | virtual status_t stop(); |
| 53 | |
| 54 | virtual sp<MetaData> getFormat(); |
| 55 | |
| 56 | virtual status_t read( |
| 57 | MediaBuffer **buffer, const ReadOptions *options = NULL); |
| 58 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 59 | protected: |
| 60 | virtual ~MPEG4Source(); |
| 61 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 62 | private: |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 63 | Mutex mLock; |
| 64 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 65 | sp<MetaData> mFormat; |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 66 | sp<DataSource> mDataSource; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 67 | int32_t mTimescale; |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 68 | sp<SampleTable> mSampleTable; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 69 | uint32_t mCurrentSampleIndex; |
| 70 | |
| 71 | bool mIsAVC; |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 72 | size_t mNALLengthSize; |
| 73 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 74 | bool mStarted; |
| 75 | |
| 76 | MediaBufferGroup *mGroup; |
| 77 | |
| 78 | MediaBuffer *mBuffer; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 79 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 80 | bool mWantsNALFragments; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 81 | |
Andreas Huber | 8a43277 | 2009-07-28 10:03:13 -0700 | [diff] [blame] | 82 | uint8_t *mSrcBuffer; |
| 83 | |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 84 | size_t parseNALSize(const uint8_t *data) const; |
| 85 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 86 | MPEG4Source(const MPEG4Source &); |
| 87 | MPEG4Source &operator=(const MPEG4Source &); |
| 88 | }; |
| 89 | |
Andreas Huber | affa99c | 2010-01-28 14:27:37 -0800 | [diff] [blame] | 90 | // This custom data source wraps an existing one and satisfies requests |
| 91 | // falling entirely within a cached range from the cache while forwarding |
| 92 | // all remaining requests to the wrapped datasource. |
| 93 | // This is used to cache the full sampletable metadata for a single track, |
| 94 | // possibly wrapping multiple times to cover all tracks, i.e. |
| 95 | // Each MPEG4DataSource caches the sampletable metadata for a single track. |
| 96 | |
| 97 | struct MPEG4DataSource : public DataSource { |
| 98 | MPEG4DataSource(const sp<DataSource> &source); |
| 99 | |
| 100 | virtual status_t initCheck() const; |
| 101 | virtual ssize_t readAt(off_t offset, void *data, size_t size); |
| 102 | virtual status_t getSize(off_t *size); |
| 103 | virtual uint32_t flags(); |
| 104 | |
| 105 | status_t setCachedRange(off_t offset, size_t size); |
| 106 | |
| 107 | protected: |
| 108 | virtual ~MPEG4DataSource(); |
| 109 | |
| 110 | private: |
| 111 | Mutex mLock; |
| 112 | |
| 113 | sp<DataSource> mSource; |
| 114 | off_t mCachedOffset; |
| 115 | size_t mCachedSize; |
| 116 | uint8_t *mCache; |
| 117 | |
| 118 | void clearCache(); |
| 119 | |
| 120 | MPEG4DataSource(const MPEG4DataSource &); |
| 121 | MPEG4DataSource &operator=(const MPEG4DataSource &); |
| 122 | }; |
| 123 | |
| 124 | MPEG4DataSource::MPEG4DataSource(const sp<DataSource> &source) |
| 125 | : mSource(source), |
| 126 | mCachedOffset(0), |
| 127 | mCachedSize(0), |
| 128 | mCache(NULL) { |
| 129 | } |
| 130 | |
| 131 | MPEG4DataSource::~MPEG4DataSource() { |
| 132 | clearCache(); |
| 133 | } |
| 134 | |
| 135 | void MPEG4DataSource::clearCache() { |
| 136 | if (mCache) { |
| 137 | free(mCache); |
| 138 | mCache = NULL; |
| 139 | } |
| 140 | |
| 141 | mCachedOffset = 0; |
| 142 | mCachedSize = 0; |
| 143 | } |
| 144 | |
| 145 | status_t MPEG4DataSource::initCheck() const { |
| 146 | return mSource->initCheck(); |
| 147 | } |
| 148 | |
| 149 | ssize_t MPEG4DataSource::readAt(off_t offset, void *data, size_t size) { |
| 150 | Mutex::Autolock autoLock(mLock); |
| 151 | |
| 152 | if (offset >= mCachedOffset |
| 153 | && offset + size <= mCachedOffset + mCachedSize) { |
| 154 | memcpy(data, &mCache[offset - mCachedOffset], size); |
| 155 | return size; |
| 156 | } |
| 157 | |
| 158 | return mSource->readAt(offset, data, size); |
| 159 | } |
| 160 | |
| 161 | status_t MPEG4DataSource::getSize(off_t *size) { |
| 162 | return mSource->getSize(size); |
| 163 | } |
| 164 | |
| 165 | uint32_t MPEG4DataSource::flags() { |
| 166 | return mSource->flags(); |
| 167 | } |
| 168 | |
| 169 | status_t MPEG4DataSource::setCachedRange(off_t offset, size_t size) { |
| 170 | Mutex::Autolock autoLock(mLock); |
| 171 | |
| 172 | clearCache(); |
| 173 | |
| 174 | mCache = (uint8_t *)malloc(size); |
| 175 | |
| 176 | if (mCache == NULL) { |
| 177 | return -ENOMEM; |
| 178 | } |
| 179 | |
| 180 | mCachedOffset = offset; |
| 181 | mCachedSize = size; |
| 182 | |
| 183 | ssize_t err = mSource->readAt(mCachedOffset, mCache, mCachedSize); |
| 184 | |
| 185 | if (err < (ssize_t)size) { |
| 186 | clearCache(); |
| 187 | |
| 188 | return ERROR_IO; |
| 189 | } |
| 190 | |
| 191 | return OK; |
| 192 | } |
| 193 | |
| 194 | //////////////////////////////////////////////////////////////////////////////// |
| 195 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 196 | static void hexdump(const void *_data, size_t size) { |
| 197 | const uint8_t *data = (const uint8_t *)_data; |
| 198 | size_t offset = 0; |
| 199 | while (offset < size) { |
| 200 | printf("0x%04x ", offset); |
| 201 | |
| 202 | size_t n = size - offset; |
| 203 | if (n > 16) { |
| 204 | n = 16; |
| 205 | } |
| 206 | |
| 207 | for (size_t i = 0; i < 16; ++i) { |
| 208 | if (i == 8) { |
| 209 | printf(" "); |
| 210 | } |
| 211 | |
| 212 | if (offset + i < size) { |
| 213 | printf("%02x ", data[offset + i]); |
| 214 | } else { |
| 215 | printf(" "); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | printf(" "); |
| 220 | |
| 221 | for (size_t i = 0; i < n; ++i) { |
| 222 | if (isprint(data[offset + i])) { |
| 223 | printf("%c", data[offset + i]); |
| 224 | } else { |
| 225 | printf("."); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | printf("\n"); |
| 230 | |
| 231 | offset += 16; |
| 232 | } |
| 233 | } |
| 234 | |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 235 | static const char *FourCC2MIME(uint32_t fourcc) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 236 | switch (fourcc) { |
| 237 | case FOURCC('m', 'p', '4', 'a'): |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 238 | return MEDIA_MIMETYPE_AUDIO_AAC; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 239 | |
| 240 | case FOURCC('s', 'a', 'm', 'r'): |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 241 | return MEDIA_MIMETYPE_AUDIO_AMR_NB; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 242 | |
Andreas Huber | 2a65117 | 2009-09-09 16:32:59 -0700 | [diff] [blame] | 243 | case FOURCC('s', 'a', 'w', 'b'): |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 244 | return MEDIA_MIMETYPE_AUDIO_AMR_WB; |
Andreas Huber | 2a65117 | 2009-09-09 16:32:59 -0700 | [diff] [blame] | 245 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 246 | case FOURCC('m', 'p', '4', 'v'): |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 247 | return MEDIA_MIMETYPE_VIDEO_MPEG4; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 248 | |
| 249 | case FOURCC('s', '2', '6', '3'): |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 250 | return MEDIA_MIMETYPE_VIDEO_H263; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 251 | |
| 252 | case FOURCC('a', 'v', 'c', '1'): |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 253 | return MEDIA_MIMETYPE_VIDEO_AVC; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 254 | |
| 255 | default: |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 256 | CHECK(!"should not be here."); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 257 | return NULL; |
| 258 | } |
| 259 | } |
| 260 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 261 | MPEG4Extractor::MPEG4Extractor(const sp<DataSource> &source) |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 262 | : mDataSource(source), |
| 263 | mHaveMetadata(false), |
Andreas Huber | 1cb02bf | 2010-01-13 11:25:10 -0800 | [diff] [blame] | 264 | mHasVideo(false), |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 265 | mFirstTrack(NULL), |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 266 | mLastTrack(NULL), |
| 267 | mFileMetaData(new MetaData) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | MPEG4Extractor::~MPEG4Extractor() { |
| 271 | Track *track = mFirstTrack; |
| 272 | while (track) { |
| 273 | Track *next = track->next; |
| 274 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 275 | delete track; |
| 276 | track = next; |
| 277 | } |
| 278 | mFirstTrack = mLastTrack = NULL; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 279 | } |
| 280 | |
Andreas Huber | 1cb02bf | 2010-01-13 11:25:10 -0800 | [diff] [blame] | 281 | sp<MetaData> MPEG4Extractor::getMetaData() { |
Andreas Huber | 1cb02bf | 2010-01-13 11:25:10 -0800 | [diff] [blame] | 282 | status_t err; |
| 283 | if ((err = readMetaData()) != OK) { |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 284 | return new MetaData; |
Andreas Huber | 1cb02bf | 2010-01-13 11:25:10 -0800 | [diff] [blame] | 285 | } |
| 286 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 287 | return mFileMetaData; |
Andreas Huber | 1cb02bf | 2010-01-13 11:25:10 -0800 | [diff] [blame] | 288 | } |
| 289 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 290 | size_t MPEG4Extractor::countTracks() { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 291 | status_t err; |
| 292 | if ((err = readMetaData()) != OK) { |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 293 | return 0; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 294 | } |
| 295 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 296 | size_t n = 0; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 297 | Track *track = mFirstTrack; |
| 298 | while (track) { |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 299 | ++n; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 300 | track = track->next; |
| 301 | } |
| 302 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 303 | return n; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 304 | } |
| 305 | |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 306 | sp<MetaData> MPEG4Extractor::getTrackMetaData( |
| 307 | size_t index, uint32_t flags) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 308 | status_t err; |
| 309 | if ((err = readMetaData()) != OK) { |
| 310 | return NULL; |
| 311 | } |
| 312 | |
| 313 | Track *track = mFirstTrack; |
| 314 | while (index > 0) { |
| 315 | if (track == NULL) { |
| 316 | return NULL; |
| 317 | } |
| 318 | |
| 319 | track = track->next; |
| 320 | --index; |
| 321 | } |
| 322 | |
Andreas Huber | 2a65117 | 2009-09-09 16:32:59 -0700 | [diff] [blame] | 323 | if (track == NULL) { |
| 324 | return NULL; |
| 325 | } |
| 326 | |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 327 | if ((flags & kIncludeExtensiveMetaData) |
| 328 | && !track->includes_expensive_metadata) { |
| 329 | track->includes_expensive_metadata = true; |
| 330 | |
| 331 | const char *mime; |
| 332 | CHECK(track->meta->findCString(kKeyMIMEType, &mime)); |
| 333 | if (!strncasecmp("video/", mime, 6)) { |
| 334 | uint32_t sampleIndex; |
| 335 | uint32_t sampleTime; |
| 336 | if (track->sampleTable->findThumbnailSample(&sampleIndex) == OK |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 337 | && track->sampleTable->getMetaDataForSample( |
| 338 | sampleIndex, NULL /* offset */, NULL /* size */, |
| 339 | &sampleTime) == OK) { |
Andreas Huber | e981c33 | 2009-10-22 13:49:30 -0700 | [diff] [blame] | 340 | track->meta->setInt64( |
| 341 | kKeyThumbnailTime, |
| 342 | ((int64_t)sampleTime * 1000000) / track->timescale); |
| 343 | } |
| 344 | } |
| 345 | } |
| 346 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 347 | return track->meta; |
| 348 | } |
| 349 | |
| 350 | status_t MPEG4Extractor::readMetaData() { |
| 351 | if (mHaveMetadata) { |
| 352 | return OK; |
| 353 | } |
| 354 | |
| 355 | off_t offset = 0; |
| 356 | status_t err; |
| 357 | while ((err = parseChunk(&offset, 0)) == OK) { |
| 358 | } |
Andreas Huber | 1cb02bf | 2010-01-13 11:25:10 -0800 | [diff] [blame] | 359 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 360 | if (mHaveMetadata) { |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 361 | if (mHasVideo) { |
| 362 | mFileMetaData->setCString(kKeyMIMEType, "video/mp4"); |
| 363 | } else { |
| 364 | mFileMetaData->setCString(kKeyMIMEType, "audio/mp4"); |
| 365 | } |
| 366 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 367 | return OK; |
| 368 | } |
| 369 | |
| 370 | return err; |
| 371 | } |
| 372 | |
| 373 | static void MakeFourCCString(uint32_t x, char *s) { |
| 374 | s[0] = x >> 24; |
| 375 | s[1] = (x >> 16) & 0xff; |
| 376 | s[2] = (x >> 8) & 0xff; |
| 377 | s[3] = x & 0xff; |
| 378 | s[4] = '\0'; |
| 379 | } |
| 380 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 381 | struct PathAdder { |
| 382 | PathAdder(Vector<uint32_t> *path, uint32_t chunkType) |
| 383 | : mPath(path) { |
| 384 | mPath->push(chunkType); |
| 385 | } |
| 386 | |
| 387 | ~PathAdder() { |
| 388 | mPath->pop(); |
| 389 | } |
| 390 | |
| 391 | private: |
| 392 | Vector<uint32_t> *mPath; |
| 393 | |
| 394 | PathAdder(const PathAdder &); |
| 395 | PathAdder &operator=(const PathAdder &); |
| 396 | }; |
| 397 | |
| 398 | static bool underMetaDataPath(const Vector<uint32_t> &path) { |
| 399 | return path.size() >= 5 |
| 400 | && path[0] == FOURCC('m', 'o', 'o', 'v') |
| 401 | && path[1] == FOURCC('u', 'd', 't', 'a') |
| 402 | && path[2] == FOURCC('m', 'e', 't', 'a') |
| 403 | && path[3] == FOURCC('i', 'l', 's', 't'); |
| 404 | } |
| 405 | |
| 406 | // Given a time in seconds since Jan 1 1904, produce a human-readable string. |
| 407 | static void convertTimeToDate(int64_t time_1904, String8 *s) { |
| 408 | time_t time_1970 = time_1904 - (((66 * 365 + 17) * 24) * 3600); |
| 409 | |
| 410 | char tmp[32]; |
| 411 | strftime(tmp, sizeof(tmp), "%Y%m%dT%H%M%S.000Z", gmtime(&time_1970)); |
| 412 | |
| 413 | s->setTo(tmp); |
| 414 | } |
| 415 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 416 | status_t MPEG4Extractor::parseChunk(off_t *offset, int depth) { |
| 417 | uint32_t hdr[2]; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 418 | if (mDataSource->readAt(*offset, hdr, 8) < 8) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 419 | return ERROR_IO; |
| 420 | } |
| 421 | uint64_t chunk_size = ntohl(hdr[0]); |
| 422 | uint32_t chunk_type = ntohl(hdr[1]); |
| 423 | off_t data_offset = *offset + 8; |
| 424 | |
| 425 | if (chunk_size == 1) { |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 426 | if (mDataSource->readAt(*offset + 8, &chunk_size, 8) < 8) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 427 | return ERROR_IO; |
| 428 | } |
| 429 | chunk_size = ntoh64(chunk_size); |
| 430 | data_offset += 8; |
Andreas Huber | 736c22d | 2010-06-24 12:16:25 -0700 | [diff] [blame] | 431 | |
| 432 | if (chunk_size < 16) { |
| 433 | // The smallest valid chunk is 16 bytes long in this case. |
| 434 | return ERROR_MALFORMED; |
| 435 | } |
| 436 | } else if (chunk_size < 8) { |
| 437 | // The smallest valid chunk is 8 bytes long. |
| 438 | return ERROR_MALFORMED; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | char chunk[5]; |
| 442 | MakeFourCCString(chunk_type, chunk); |
| 443 | |
| 444 | #if 0 |
| 445 | static const char kWhitespace[] = " "; |
| 446 | const char *indent = &kWhitespace[sizeof(kWhitespace) - 1 - 2 * depth]; |
| 447 | printf("%sfound chunk '%s' of size %lld\n", indent, chunk, chunk_size); |
| 448 | |
| 449 | char buffer[256]; |
Andreas Huber | dfb8eee | 2010-02-25 15:59:24 -0800 | [diff] [blame] | 450 | size_t n = chunk_size; |
| 451 | if (n > sizeof(buffer)) { |
| 452 | n = sizeof(buffer); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 453 | } |
Andreas Huber | dfb8eee | 2010-02-25 15:59:24 -0800 | [diff] [blame] | 454 | if (mDataSource->readAt(*offset, buffer, n) |
| 455 | < (ssize_t)n) { |
| 456 | return ERROR_IO; |
| 457 | } |
| 458 | |
| 459 | hexdump(buffer, n); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 460 | #endif |
| 461 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 462 | PathAdder autoAdder(&mPath, chunk_type); |
| 463 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 464 | off_t chunk_data_size = *offset + chunk_size - data_offset; |
| 465 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 466 | if (chunk_type != FOURCC('c', 'p', 'r', 't') |
| 467 | && mPath.size() == 5 && underMetaDataPath(mPath)) { |
| 468 | off_t stop_offset = *offset + chunk_size; |
| 469 | *offset = data_offset; |
| 470 | while (*offset < stop_offset) { |
| 471 | status_t err = parseChunk(offset, depth + 1); |
| 472 | if (err != OK) { |
| 473 | return err; |
| 474 | } |
| 475 | } |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 476 | |
| 477 | if (*offset != stop_offset) { |
| 478 | return ERROR_MALFORMED; |
| 479 | } |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 480 | |
| 481 | return OK; |
| 482 | } |
| 483 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 484 | switch(chunk_type) { |
| 485 | case FOURCC('m', 'o', 'o', 'v'): |
| 486 | case FOURCC('t', 'r', 'a', 'k'): |
| 487 | case FOURCC('m', 'd', 'i', 'a'): |
| 488 | case FOURCC('m', 'i', 'n', 'f'): |
| 489 | case FOURCC('d', 'i', 'n', 'f'): |
| 490 | case FOURCC('s', 't', 'b', 'l'): |
| 491 | case FOURCC('m', 'v', 'e', 'x'): |
| 492 | case FOURCC('m', 'o', 'o', 'f'): |
| 493 | case FOURCC('t', 'r', 'a', 'f'): |
| 494 | case FOURCC('m', 'f', 'r', 'a'): |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 495 | case FOURCC('u', 'd', 't', 'a'): |
| 496 | case FOURCC('i', 'l', 's', 't'): |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 497 | { |
Andreas Huber | affa99c | 2010-01-28 14:27:37 -0800 | [diff] [blame] | 498 | if (chunk_type == FOURCC('s', 't', 'b', 'l')) { |
| 499 | LOGV("sampleTable chunk is %d bytes long.", (size_t)chunk_size); |
| 500 | |
Andreas Huber | 6da2ae1 | 2010-10-15 08:38:49 -0700 | [diff] [blame] | 501 | if (mDataSource->flags() |
| 502 | & (DataSource::kWantsPrefetching |
| 503 | | DataSource::kIsCachingDataSource)) { |
Andreas Huber | affa99c | 2010-01-28 14:27:37 -0800 | [diff] [blame] | 504 | sp<MPEG4DataSource> cachedSource = |
| 505 | new MPEG4DataSource(mDataSource); |
| 506 | |
| 507 | if (cachedSource->setCachedRange(*offset, chunk_size) == OK) { |
| 508 | mDataSource = cachedSource; |
| 509 | } |
| 510 | } |
Andreas Huber | eb9128f | 2010-05-14 15:28:51 -0700 | [diff] [blame] | 511 | |
| 512 | mLastTrack->sampleTable = new SampleTable(mDataSource); |
Andreas Huber | affa99c | 2010-01-28 14:27:37 -0800 | [diff] [blame] | 513 | } |
| 514 | |
Andreas Huber | 4d60fc5 | 2010-03-12 16:15:53 -0800 | [diff] [blame] | 515 | bool isTrack = false; |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 516 | if (chunk_type == FOURCC('t', 'r', 'a', 'k')) { |
Andreas Huber | 4d60fc5 | 2010-03-12 16:15:53 -0800 | [diff] [blame] | 517 | isTrack = true; |
| 518 | |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 519 | Track *track = new Track; |
| 520 | track->next = NULL; |
| 521 | if (mLastTrack) { |
| 522 | mLastTrack->next = track; |
| 523 | } else { |
| 524 | mFirstTrack = track; |
| 525 | } |
| 526 | mLastTrack = track; |
| 527 | |
| 528 | track->meta = new MetaData; |
| 529 | track->includes_expensive_metadata = false; |
Andreas Huber | 4d60fc5 | 2010-03-12 16:15:53 -0800 | [diff] [blame] | 530 | track->skipTrack = false; |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 531 | track->timescale = 0; |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 532 | track->meta->setCString(kKeyMIMEType, "application/octet-stream"); |
| 533 | } |
| 534 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 535 | off_t stop_offset = *offset + chunk_size; |
| 536 | *offset = data_offset; |
| 537 | while (*offset < stop_offset) { |
| 538 | status_t err = parseChunk(offset, depth + 1); |
| 539 | if (err != OK) { |
| 540 | return err; |
| 541 | } |
| 542 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 543 | |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 544 | if (*offset != stop_offset) { |
| 545 | return ERROR_MALFORMED; |
| 546 | } |
| 547 | |
Andreas Huber | 4d60fc5 | 2010-03-12 16:15:53 -0800 | [diff] [blame] | 548 | if (isTrack) { |
| 549 | if (mLastTrack->skipTrack) { |
| 550 | Track *cur = mFirstTrack; |
| 551 | |
| 552 | if (cur == mLastTrack) { |
| 553 | delete cur; |
| 554 | mFirstTrack = mLastTrack = NULL; |
| 555 | } else { |
| 556 | while (cur && cur->next != mLastTrack) { |
| 557 | cur = cur->next; |
| 558 | } |
| 559 | cur->next = NULL; |
| 560 | delete mLastTrack; |
| 561 | mLastTrack = cur; |
| 562 | } |
| 563 | |
| 564 | return OK; |
| 565 | } |
| 566 | |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 567 | status_t err = verifyTrack(mLastTrack); |
| 568 | |
| 569 | if (err != OK) { |
| 570 | return err; |
| 571 | } |
| 572 | } else if (chunk_type == FOURCC('m', 'o', 'o', 'v')) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 573 | mHaveMetadata = true; |
| 574 | |
| 575 | return UNKNOWN_ERROR; // Return a dummy error. |
| 576 | } |
| 577 | break; |
| 578 | } |
| 579 | |
| 580 | case FOURCC('t', 'k', 'h', 'd'): |
| 581 | { |
Andreas Huber | 31dc911 | 2010-11-04 11:50:27 -0700 | [diff] [blame] | 582 | status_t err; |
| 583 | if ((err = parseTrackHeader(data_offset, chunk_data_size)) != OK) { |
| 584 | return err; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 585 | } |
| 586 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 587 | *offset += chunk_size; |
| 588 | break; |
| 589 | } |
| 590 | |
| 591 | case FOURCC('m', 'd', 'h', 'd'): |
| 592 | { |
| 593 | if (chunk_data_size < 4) { |
| 594 | return ERROR_MALFORMED; |
| 595 | } |
| 596 | |
| 597 | uint8_t version; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 598 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 599 | data_offset, &version, sizeof(version)) |
| 600 | < (ssize_t)sizeof(version)) { |
| 601 | return ERROR_IO; |
| 602 | } |
| 603 | |
| 604 | off_t timescale_offset; |
| 605 | |
| 606 | if (version == 1) { |
| 607 | timescale_offset = data_offset + 4 + 16; |
| 608 | } else if (version == 0) { |
| 609 | timescale_offset = data_offset + 4 + 8; |
| 610 | } else { |
| 611 | return ERROR_IO; |
| 612 | } |
| 613 | |
| 614 | uint32_t timescale; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 615 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 616 | timescale_offset, ×cale, sizeof(timescale)) |
| 617 | < (ssize_t)sizeof(timescale)) { |
| 618 | return ERROR_IO; |
| 619 | } |
| 620 | |
| 621 | mLastTrack->timescale = ntohl(timescale); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 622 | |
| 623 | int64_t duration; |
| 624 | if (version == 1) { |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 625 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 626 | timescale_offset + 4, &duration, sizeof(duration)) |
| 627 | < (ssize_t)sizeof(duration)) { |
| 628 | return ERROR_IO; |
| 629 | } |
| 630 | duration = ntoh64(duration); |
| 631 | } else { |
| 632 | int32_t duration32; |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 633 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 634 | timescale_offset + 4, &duration32, sizeof(duration32)) |
| 635 | < (ssize_t)sizeof(duration32)) { |
| 636 | return ERROR_IO; |
| 637 | } |
| 638 | duration = ntohl(duration32); |
| 639 | } |
Andreas Huber | fa8de75 | 2009-10-08 10:07:49 -0700 | [diff] [blame] | 640 | mLastTrack->meta->setInt64( |
| 641 | kKeyDuration, (duration * 1000000) / mLastTrack->timescale); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 642 | |
| 643 | *offset += chunk_size; |
| 644 | break; |
| 645 | } |
| 646 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 647 | case FOURCC('s', 't', 's', 'd'): |
| 648 | { |
| 649 | if (chunk_data_size < 8) { |
| 650 | return ERROR_MALFORMED; |
| 651 | } |
| 652 | |
| 653 | uint8_t buffer[8]; |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 654 | if (chunk_data_size < (off_t)sizeof(buffer)) { |
| 655 | return ERROR_MALFORMED; |
| 656 | } |
| 657 | |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 658 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 659 | data_offset, buffer, 8) < 8) { |
| 660 | return ERROR_IO; |
| 661 | } |
| 662 | |
| 663 | if (U32_AT(buffer) != 0) { |
| 664 | // Should be version 0, flags 0. |
| 665 | return ERROR_MALFORMED; |
| 666 | } |
| 667 | |
| 668 | uint32_t entry_count = U32_AT(&buffer[4]); |
| 669 | |
| 670 | if (entry_count > 1) { |
| 671 | // For now we only support a single type of media per track. |
Andreas Huber | 4d60fc5 | 2010-03-12 16:15:53 -0800 | [diff] [blame] | 672 | |
| 673 | mLastTrack->skipTrack = true; |
| 674 | *offset += chunk_size; |
| 675 | break; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 676 | } |
| 677 | |
| 678 | off_t stop_offset = *offset + chunk_size; |
| 679 | *offset = data_offset + 8; |
| 680 | for (uint32_t i = 0; i < entry_count; ++i) { |
| 681 | status_t err = parseChunk(offset, depth + 1); |
| 682 | if (err != OK) { |
| 683 | return err; |
| 684 | } |
| 685 | } |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 686 | |
| 687 | if (*offset != stop_offset) { |
| 688 | return ERROR_MALFORMED; |
| 689 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 690 | break; |
| 691 | } |
| 692 | |
| 693 | case FOURCC('m', 'p', '4', 'a'): |
| 694 | case FOURCC('s', 'a', 'm', 'r'): |
Andreas Huber | 2a65117 | 2009-09-09 16:32:59 -0700 | [diff] [blame] | 695 | case FOURCC('s', 'a', 'w', 'b'): |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 696 | { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 697 | uint8_t buffer[8 + 20]; |
| 698 | if (chunk_data_size < (ssize_t)sizeof(buffer)) { |
| 699 | // Basic AudioSampleEntry size. |
| 700 | return ERROR_MALFORMED; |
| 701 | } |
| 702 | |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 703 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 704 | data_offset, buffer, sizeof(buffer)) < (ssize_t)sizeof(buffer)) { |
| 705 | return ERROR_IO; |
| 706 | } |
| 707 | |
| 708 | uint16_t data_ref_index = U16_AT(&buffer[6]); |
| 709 | uint16_t num_channels = U16_AT(&buffer[16]); |
| 710 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 711 | uint16_t sample_size = U16_AT(&buffer[18]); |
| 712 | uint32_t sample_rate = U32_AT(&buffer[24]) >> 16; |
| 713 | |
Andreas Huber | d0332ad | 2010-04-12 16:05:57 -0700 | [diff] [blame] | 714 | if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_NB, |
| 715 | FourCC2MIME(chunk_type))) { |
| 716 | // AMR NB audio is always mono, 8kHz |
| 717 | num_channels = 1; |
| 718 | sample_rate = 8000; |
| 719 | } else if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_WB, |
| 720 | FourCC2MIME(chunk_type))) { |
| 721 | // AMR WB audio is always mono, 16kHz |
| 722 | num_channels = 1; |
| 723 | sample_rate = 16000; |
| 724 | } |
| 725 | |
| 726 | #if 0 |
| 727 | printf("*** coding='%s' %d channels, size %d, rate %d\n", |
| 728 | chunk, num_channels, sample_size, sample_rate); |
| 729 | #endif |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 730 | |
| 731 | mLastTrack->meta->setCString(kKeyMIMEType, FourCC2MIME(chunk_type)); |
| 732 | mLastTrack->meta->setInt32(kKeyChannelCount, num_channels); |
| 733 | mLastTrack->meta->setInt32(kKeySampleRate, sample_rate); |
| 734 | |
| 735 | off_t stop_offset = *offset + chunk_size; |
| 736 | *offset = data_offset + sizeof(buffer); |
| 737 | while (*offset < stop_offset) { |
| 738 | status_t err = parseChunk(offset, depth + 1); |
| 739 | if (err != OK) { |
| 740 | return err; |
| 741 | } |
| 742 | } |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 743 | |
| 744 | if (*offset != stop_offset) { |
| 745 | return ERROR_MALFORMED; |
| 746 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 747 | break; |
| 748 | } |
| 749 | |
| 750 | case FOURCC('m', 'p', '4', 'v'): |
| 751 | case FOURCC('s', '2', '6', '3'): |
| 752 | case FOURCC('a', 'v', 'c', '1'): |
| 753 | { |
Andreas Huber | 1cb02bf | 2010-01-13 11:25:10 -0800 | [diff] [blame] | 754 | mHasVideo = true; |
| 755 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 756 | uint8_t buffer[78]; |
| 757 | if (chunk_data_size < (ssize_t)sizeof(buffer)) { |
| 758 | // Basic VideoSampleEntry size. |
| 759 | return ERROR_MALFORMED; |
| 760 | } |
| 761 | |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 762 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 763 | data_offset, buffer, sizeof(buffer)) < (ssize_t)sizeof(buffer)) { |
| 764 | return ERROR_IO; |
| 765 | } |
| 766 | |
| 767 | uint16_t data_ref_index = U16_AT(&buffer[6]); |
| 768 | uint16_t width = U16_AT(&buffer[6 + 18]); |
| 769 | uint16_t height = U16_AT(&buffer[6 + 20]); |
| 770 | |
Andreas Huber | 2ea14e2 | 2009-12-16 09:30:55 -0800 | [diff] [blame] | 771 | // printf("*** coding='%s' width=%d height=%d\n", |
| 772 | // chunk, width, height); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 773 | |
| 774 | mLastTrack->meta->setCString(kKeyMIMEType, FourCC2MIME(chunk_type)); |
| 775 | mLastTrack->meta->setInt32(kKeyWidth, width); |
| 776 | mLastTrack->meta->setInt32(kKeyHeight, height); |
| 777 | |
| 778 | off_t stop_offset = *offset + chunk_size; |
| 779 | *offset = data_offset + sizeof(buffer); |
| 780 | while (*offset < stop_offset) { |
| 781 | status_t err = parseChunk(offset, depth + 1); |
| 782 | if (err != OK) { |
| 783 | return err; |
| 784 | } |
| 785 | } |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 786 | |
| 787 | if (*offset != stop_offset) { |
| 788 | return ERROR_MALFORMED; |
| 789 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 790 | break; |
| 791 | } |
| 792 | |
| 793 | case FOURCC('s', 't', 'c', 'o'): |
| 794 | case FOURCC('c', 'o', '6', '4'): |
| 795 | { |
| 796 | status_t err = |
| 797 | mLastTrack->sampleTable->setChunkOffsetParams( |
| 798 | chunk_type, data_offset, chunk_data_size); |
| 799 | |
| 800 | if (err != OK) { |
| 801 | return err; |
| 802 | } |
| 803 | |
| 804 | *offset += chunk_size; |
| 805 | break; |
| 806 | } |
| 807 | |
| 808 | case FOURCC('s', 't', 's', 'c'): |
| 809 | { |
| 810 | status_t err = |
| 811 | mLastTrack->sampleTable->setSampleToChunkParams( |
| 812 | data_offset, chunk_data_size); |
| 813 | |
| 814 | if (err != OK) { |
| 815 | return err; |
| 816 | } |
| 817 | |
| 818 | *offset += chunk_size; |
| 819 | break; |
| 820 | } |
| 821 | |
| 822 | case FOURCC('s', 't', 's', 'z'): |
| 823 | case FOURCC('s', 't', 'z', '2'): |
| 824 | { |
| 825 | status_t err = |
| 826 | mLastTrack->sampleTable->setSampleSizeParams( |
| 827 | chunk_type, data_offset, chunk_data_size); |
| 828 | |
| 829 | if (err != OK) { |
| 830 | return err; |
| 831 | } |
| 832 | |
Andreas Huber | 1bceff9 | 2009-11-23 14:03:32 -0800 | [diff] [blame] | 833 | size_t max_size; |
Andreas Huber | d7f2225 | 2010-09-09 10:10:15 -0700 | [diff] [blame] | 834 | err = mLastTrack->sampleTable->getMaxSampleSize(&max_size); |
| 835 | |
| 836 | if (err != OK) { |
| 837 | return err; |
| 838 | } |
Andreas Huber | 1bceff9 | 2009-11-23 14:03:32 -0800 | [diff] [blame] | 839 | |
| 840 | // Assume that a given buffer only contains at most 10 fragments, |
| 841 | // each fragment originally prefixed with a 2 byte length will |
| 842 | // have a 4 byte header (0x00 0x00 0x00 0x01) after conversion, |
| 843 | // and thus will grow by 2 bytes per fragment. |
| 844 | mLastTrack->meta->setInt32(kKeyMaxInputSize, max_size + 10 * 2); |
| 845 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 846 | *offset += chunk_size; |
| 847 | break; |
| 848 | } |
| 849 | |
| 850 | case FOURCC('s', 't', 't', 's'): |
| 851 | { |
| 852 | status_t err = |
| 853 | mLastTrack->sampleTable->setTimeToSampleParams( |
| 854 | data_offset, chunk_data_size); |
| 855 | |
| 856 | if (err != OK) { |
| 857 | return err; |
| 858 | } |
| 859 | |
| 860 | *offset += chunk_size; |
| 861 | break; |
| 862 | } |
| 863 | |
| 864 | case FOURCC('s', 't', 's', 's'): |
| 865 | { |
| 866 | status_t err = |
| 867 | mLastTrack->sampleTable->setSyncSampleParams( |
| 868 | data_offset, chunk_data_size); |
| 869 | |
| 870 | if (err != OK) { |
| 871 | return err; |
| 872 | } |
| 873 | |
| 874 | *offset += chunk_size; |
| 875 | break; |
| 876 | } |
| 877 | |
| 878 | case FOURCC('e', 's', 'd', 's'): |
| 879 | { |
| 880 | if (chunk_data_size < 4) { |
| 881 | return ERROR_MALFORMED; |
| 882 | } |
| 883 | |
| 884 | uint8_t buffer[256]; |
| 885 | if (chunk_data_size > (off_t)sizeof(buffer)) { |
| 886 | return ERROR_BUFFER_TOO_SMALL; |
| 887 | } |
| 888 | |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 889 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 890 | data_offset, buffer, chunk_data_size) < chunk_data_size) { |
| 891 | return ERROR_IO; |
| 892 | } |
| 893 | |
| 894 | if (U32_AT(buffer) != 0) { |
| 895 | // Should be version 0, flags 0. |
| 896 | return ERROR_MALFORMED; |
| 897 | } |
| 898 | |
| 899 | mLastTrack->meta->setData( |
| 900 | kKeyESDS, kTypeESDS, &buffer[4], chunk_data_size - 4); |
| 901 | |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 902 | if (mPath.size() >= 2 |
| 903 | && mPath[mPath.size() - 2] == FOURCC('m', 'p', '4', 'a')) { |
| 904 | // Information from the ESDS must be relied on for proper |
| 905 | // setup of sample rate and channel count for MPEG4 Audio. |
| 906 | // The generic header appears to only contain generic |
| 907 | // information... |
| 908 | |
| 909 | status_t err = updateAudioTrackInfoFromESDS_MPEG4Audio( |
| 910 | &buffer[4], chunk_data_size - 4); |
| 911 | |
| 912 | if (err != OK) { |
| 913 | return err; |
| 914 | } |
| 915 | } |
| 916 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 917 | *offset += chunk_size; |
| 918 | break; |
| 919 | } |
| 920 | |
| 921 | case FOURCC('a', 'v', 'c', 'C'): |
| 922 | { |
| 923 | char buffer[256]; |
| 924 | if (chunk_data_size > (off_t)sizeof(buffer)) { |
| 925 | return ERROR_BUFFER_TOO_SMALL; |
| 926 | } |
| 927 | |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 928 | if (mDataSource->readAt( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 929 | data_offset, buffer, chunk_data_size) < chunk_data_size) { |
| 930 | return ERROR_IO; |
| 931 | } |
| 932 | |
| 933 | mLastTrack->meta->setData( |
| 934 | kKeyAVCC, kTypeAVCC, buffer, chunk_data_size); |
| 935 | |
| 936 | *offset += chunk_size; |
| 937 | break; |
| 938 | } |
| 939 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 940 | case FOURCC('m', 'e', 't', 'a'): |
| 941 | { |
| 942 | uint8_t buffer[4]; |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 943 | if (chunk_data_size < (off_t)sizeof(buffer)) { |
| 944 | return ERROR_MALFORMED; |
| 945 | } |
| 946 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 947 | if (mDataSource->readAt( |
| 948 | data_offset, buffer, 4) < 4) { |
| 949 | return ERROR_IO; |
| 950 | } |
| 951 | |
| 952 | if (U32_AT(buffer) != 0) { |
| 953 | // Should be version 0, flags 0. |
Andreas Huber | dfb8eee | 2010-02-25 15:59:24 -0800 | [diff] [blame] | 954 | |
| 955 | // If it's not, let's assume this is one of those |
| 956 | // apparently malformed chunks that don't have flags |
| 957 | // and completely different semantics than what's |
| 958 | // in the MPEG4 specs and skip it. |
| 959 | *offset += chunk_size; |
| 960 | return OK; |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 961 | } |
| 962 | |
| 963 | off_t stop_offset = *offset + chunk_size; |
| 964 | *offset = data_offset + sizeof(buffer); |
| 965 | while (*offset < stop_offset) { |
| 966 | status_t err = parseChunk(offset, depth + 1); |
| 967 | if (err != OK) { |
| 968 | return err; |
| 969 | } |
| 970 | } |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 971 | |
| 972 | if (*offset != stop_offset) { |
| 973 | return ERROR_MALFORMED; |
| 974 | } |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 975 | break; |
| 976 | } |
| 977 | |
| 978 | case FOURCC('d', 'a', 't', 'a'): |
| 979 | { |
| 980 | if (mPath.size() == 6 && underMetaDataPath(mPath)) { |
| 981 | status_t err = parseMetaData(data_offset, chunk_data_size); |
| 982 | |
| 983 | if (err != OK) { |
| 984 | return err; |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | *offset += chunk_size; |
| 989 | break; |
| 990 | } |
| 991 | |
| 992 | case FOURCC('m', 'v', 'h', 'd'): |
| 993 | { |
| 994 | if (chunk_data_size < 12) { |
| 995 | return ERROR_MALFORMED; |
| 996 | } |
| 997 | |
| 998 | uint8_t header[12]; |
| 999 | if (mDataSource->readAt( |
| 1000 | data_offset, header, sizeof(header)) |
| 1001 | < (ssize_t)sizeof(header)) { |
| 1002 | return ERROR_IO; |
| 1003 | } |
| 1004 | |
| 1005 | int64_t creationTime; |
| 1006 | if (header[0] == 1) { |
| 1007 | creationTime = U64_AT(&header[4]); |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 1008 | } else if (header[0] != 0) { |
| 1009 | return ERROR_MALFORMED; |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1010 | } else { |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1011 | creationTime = U32_AT(&header[4]); |
| 1012 | } |
| 1013 | |
| 1014 | String8 s; |
| 1015 | convertTimeToDate(creationTime, &s); |
| 1016 | |
| 1017 | mFileMetaData->setCString(kKeyDate, s.string()); |
| 1018 | |
| 1019 | *offset += chunk_size; |
| 1020 | break; |
| 1021 | } |
| 1022 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1023 | default: |
| 1024 | { |
| 1025 | *offset += chunk_size; |
| 1026 | break; |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | return OK; |
| 1031 | } |
| 1032 | |
Andreas Huber | 31dc911 | 2010-11-04 11:50:27 -0700 | [diff] [blame] | 1033 | status_t MPEG4Extractor::parseTrackHeader( |
| 1034 | off_t data_offset, off_t data_size) { |
| 1035 | if (data_size < 4) { |
| 1036 | return ERROR_MALFORMED; |
| 1037 | } |
| 1038 | |
| 1039 | uint8_t version; |
| 1040 | if (mDataSource->readAt(data_offset, &version, 1) < 1) { |
| 1041 | return ERROR_IO; |
| 1042 | } |
| 1043 | |
| 1044 | size_t dynSize = (version == 1) ? 36 : 24; |
| 1045 | |
| 1046 | uint8_t buffer[36 + 60]; |
| 1047 | |
| 1048 | if (data_size != (off_t)dynSize + 60) { |
| 1049 | return ERROR_MALFORMED; |
| 1050 | } |
| 1051 | |
| 1052 | if (mDataSource->readAt( |
| 1053 | data_offset, buffer, data_size) < (ssize_t)data_size) { |
| 1054 | return ERROR_IO; |
| 1055 | } |
| 1056 | |
| 1057 | uint64_t ctime, mtime, duration; |
| 1058 | int32_t id; |
| 1059 | |
| 1060 | if (version == 1) { |
| 1061 | ctime = U64_AT(&buffer[4]); |
| 1062 | mtime = U64_AT(&buffer[12]); |
| 1063 | id = U32_AT(&buffer[20]); |
| 1064 | duration = U64_AT(&buffer[28]); |
| 1065 | } else if (version == 0) { |
| 1066 | ctime = U32_AT(&buffer[4]); |
| 1067 | mtime = U32_AT(&buffer[8]); |
| 1068 | id = U32_AT(&buffer[12]); |
| 1069 | duration = U32_AT(&buffer[20]); |
| 1070 | } |
| 1071 | |
| 1072 | size_t matrixOffset = dynSize + 16; |
| 1073 | int32_t a00 = U32_AT(&buffer[matrixOffset]); |
| 1074 | int32_t a01 = U32_AT(&buffer[matrixOffset + 4]); |
| 1075 | int32_t dx = U32_AT(&buffer[matrixOffset + 8]); |
| 1076 | int32_t a10 = U32_AT(&buffer[matrixOffset + 12]); |
| 1077 | int32_t a11 = U32_AT(&buffer[matrixOffset + 16]); |
| 1078 | int32_t dy = U32_AT(&buffer[matrixOffset + 20]); |
| 1079 | |
| 1080 | #if 0 |
| 1081 | LOGI("x' = %.2f * x + %.2f * y + %.2f", |
| 1082 | a00 / 65536.0f, a01 / 65536.0f, dx / 65536.0f); |
| 1083 | LOGI("y' = %.2f * x + %.2f * y + %.2f", |
| 1084 | a10 / 65536.0f, a11 / 65536.0f, dy / 65536.0f); |
| 1085 | #endif |
| 1086 | |
| 1087 | uint32_t rotationDegrees; |
| 1088 | |
| 1089 | static const int32_t kFixedOne = 0x10000; |
| 1090 | if (a00 == kFixedOne && a01 == 0 && a10 == 0 && a11 == kFixedOne) { |
| 1091 | // Identity, no rotation |
| 1092 | rotationDegrees = 0; |
| 1093 | } else if (a00 == 0 && a01 == kFixedOne && a10 == -kFixedOne && a11 == 0) { |
| 1094 | rotationDegrees = 90; |
| 1095 | } else if (a00 == 0 && a01 == -kFixedOne && a10 == kFixedOne && a11 == 0) { |
| 1096 | rotationDegrees = 270; |
| 1097 | } else if (a00 == -kFixedOne && a01 == 0 && a10 == 0 && a11 == -kFixedOne) { |
| 1098 | rotationDegrees = 180; |
| 1099 | } else { |
| 1100 | LOGW("We only support 0,90,180,270 degree rotation matrices"); |
| 1101 | rotationDegrees = 0; |
| 1102 | } |
| 1103 | |
| 1104 | if (rotationDegrees != 0) { |
| 1105 | mLastTrack->meta->setInt32(kKeyRotation, rotationDegrees); |
| 1106 | } |
| 1107 | |
| 1108 | #if 0 |
| 1109 | uint32_t width = U32_AT(&buffer[dynSize + 52]); |
| 1110 | uint32_t height = U32_AT(&buffer[dynSize + 56]); |
| 1111 | #endif |
| 1112 | |
| 1113 | return OK; |
| 1114 | } |
| 1115 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1116 | status_t MPEG4Extractor::parseMetaData(off_t offset, size_t size) { |
| 1117 | if (size < 4) { |
| 1118 | return ERROR_MALFORMED; |
| 1119 | } |
| 1120 | |
| 1121 | uint8_t *buffer = new uint8_t[size + 1]; |
| 1122 | if (mDataSource->readAt( |
| 1123 | offset, buffer, size) != (ssize_t)size) { |
| 1124 | delete[] buffer; |
| 1125 | buffer = NULL; |
| 1126 | |
| 1127 | return ERROR_IO; |
| 1128 | } |
| 1129 | |
| 1130 | uint32_t flags = U32_AT(buffer); |
| 1131 | |
| 1132 | uint32_t metadataKey = 0; |
| 1133 | switch (mPath[4]) { |
| 1134 | case FOURCC(0xa9, 'a', 'l', 'b'): |
| 1135 | { |
| 1136 | metadataKey = kKeyAlbum; |
| 1137 | break; |
| 1138 | } |
| 1139 | case FOURCC(0xa9, 'A', 'R', 'T'): |
| 1140 | { |
| 1141 | metadataKey = kKeyArtist; |
| 1142 | break; |
| 1143 | } |
Marco Nelissen | c5d5ee3 | 2010-02-11 13:31:44 -0800 | [diff] [blame] | 1144 | case FOURCC('a', 'A', 'R', 'T'): |
| 1145 | { |
| 1146 | metadataKey = kKeyAlbumArtist; |
| 1147 | break; |
| 1148 | } |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1149 | case FOURCC(0xa9, 'd', 'a', 'y'): |
| 1150 | { |
| 1151 | metadataKey = kKeyYear; |
| 1152 | break; |
| 1153 | } |
| 1154 | case FOURCC(0xa9, 'n', 'a', 'm'): |
| 1155 | { |
| 1156 | metadataKey = kKeyTitle; |
| 1157 | break; |
| 1158 | } |
| 1159 | case FOURCC(0xa9, 'w', 'r', 't'): |
| 1160 | { |
| 1161 | metadataKey = kKeyWriter; |
| 1162 | break; |
| 1163 | } |
| 1164 | case FOURCC('c', 'o', 'v', 'r'): |
| 1165 | { |
| 1166 | metadataKey = kKeyAlbumArt; |
| 1167 | break; |
| 1168 | } |
| 1169 | case FOURCC('g', 'n', 'r', 'e'): |
| 1170 | { |
| 1171 | metadataKey = kKeyGenre; |
| 1172 | break; |
| 1173 | } |
Marco Nelissen | fe3b8e9 | 2010-02-09 14:02:16 -0800 | [diff] [blame] | 1174 | case FOURCC(0xa9, 'g', 'e', 'n'): |
| 1175 | { |
| 1176 | metadataKey = kKeyGenre; |
| 1177 | break; |
| 1178 | } |
Marco Nelissen | ba77a3f | 2011-01-06 11:12:17 -0800 | [diff] [blame] | 1179 | case FOURCC('c', 'p', 'i', 'l'): |
| 1180 | { |
| 1181 | if (size == 9 && flags == 21) { |
| 1182 | char tmp[16]; |
| 1183 | sprintf(tmp, "%d", |
| 1184 | (int)buffer[size - 1]); |
| 1185 | |
| 1186 | mFileMetaData->setCString(kKeyCompilation, tmp); |
| 1187 | } |
| 1188 | break; |
| 1189 | } |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1190 | case FOURCC('t', 'r', 'k', 'n'): |
| 1191 | { |
| 1192 | if (size == 16 && flags == 0) { |
| 1193 | char tmp[16]; |
| 1194 | sprintf(tmp, "%d/%d", |
| 1195 | (int)buffer[size - 5], (int)buffer[size - 3]); |
| 1196 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1197 | mFileMetaData->setCString(kKeyCDTrackNumber, tmp); |
| 1198 | } |
| 1199 | break; |
| 1200 | } |
Marco Nelissen | fe3b8e9 | 2010-02-09 14:02:16 -0800 | [diff] [blame] | 1201 | case FOURCC('d', 'i', 's', 'k'): |
| 1202 | { |
| 1203 | if (size == 14 && flags == 0) { |
| 1204 | char tmp[16]; |
| 1205 | sprintf(tmp, "%d/%d", |
| 1206 | (int)buffer[size - 3], (int)buffer[size - 1]); |
| 1207 | |
| 1208 | mFileMetaData->setCString(kKeyDiscNumber, tmp); |
| 1209 | } |
| 1210 | break; |
| 1211 | } |
| 1212 | |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1213 | default: |
| 1214 | break; |
| 1215 | } |
| 1216 | |
| 1217 | if (size >= 8 && metadataKey) { |
| 1218 | if (metadataKey == kKeyAlbumArt) { |
| 1219 | mFileMetaData->setData( |
| 1220 | kKeyAlbumArt, MetaData::TYPE_NONE, |
| 1221 | buffer + 8, size - 8); |
| 1222 | } else if (metadataKey == kKeyGenre) { |
| 1223 | if (flags == 0) { |
Marco Nelissen | fe3b8e9 | 2010-02-09 14:02:16 -0800 | [diff] [blame] | 1224 | // uint8_t genre code, iTunes genre codes are |
| 1225 | // the standard id3 codes, except they start |
| 1226 | // at 1 instead of 0 (e.g. Pop is 14, not 13) |
| 1227 | // We use standard id3 numbering, so subtract 1. |
| 1228 | int genrecode = (int)buffer[size - 1]; |
| 1229 | genrecode--; |
| 1230 | if (genrecode < 0) { |
| 1231 | genrecode = 255; // reserved for 'unknown genre' |
| 1232 | } |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1233 | char genre[10]; |
Marco Nelissen | fe3b8e9 | 2010-02-09 14:02:16 -0800 | [diff] [blame] | 1234 | sprintf(genre, "%d", genrecode); |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1235 | |
| 1236 | mFileMetaData->setCString(metadataKey, genre); |
Marco Nelissen | fe3b8e9 | 2010-02-09 14:02:16 -0800 | [diff] [blame] | 1237 | } else if (flags == 1) { |
| 1238 | // custom genre string |
| 1239 | buffer[size] = '\0'; |
| 1240 | |
| 1241 | mFileMetaData->setCString( |
| 1242 | metadataKey, (const char *)buffer + 8); |
Andreas Huber | c2c9dd3 | 2010-01-19 16:43:53 -0800 | [diff] [blame] | 1243 | } |
| 1244 | } else { |
| 1245 | buffer[size] = '\0'; |
| 1246 | |
| 1247 | mFileMetaData->setCString( |
| 1248 | metadataKey, (const char *)buffer + 8); |
| 1249 | } |
| 1250 | } |
| 1251 | |
| 1252 | delete[] buffer; |
| 1253 | buffer = NULL; |
| 1254 | |
| 1255 | return OK; |
| 1256 | } |
| 1257 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 1258 | sp<MediaSource> MPEG4Extractor::getTrack(size_t index) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1259 | status_t err; |
| 1260 | if ((err = readMetaData()) != OK) { |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 1261 | return NULL; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | Track *track = mFirstTrack; |
| 1265 | while (index > 0) { |
| 1266 | if (track == NULL) { |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 1267 | return NULL; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | track = track->next; |
| 1271 | --index; |
| 1272 | } |
| 1273 | |
Andreas Huber | 2a65117 | 2009-09-09 16:32:59 -0700 | [diff] [blame] | 1274 | if (track == NULL) { |
| 1275 | return NULL; |
| 1276 | } |
| 1277 | |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 1278 | return new MPEG4Source( |
Andreas Huber | fa8de75 | 2009-10-08 10:07:49 -0700 | [diff] [blame] | 1279 | track->meta, mDataSource, track->timescale, track->sampleTable); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1280 | } |
| 1281 | |
Andreas Huber | 5ee0bce | 2010-02-23 10:12:02 -0800 | [diff] [blame] | 1282 | // static |
| 1283 | status_t MPEG4Extractor::verifyTrack(Track *track) { |
| 1284 | const char *mime; |
| 1285 | CHECK(track->meta->findCString(kKeyMIMEType, &mime)); |
| 1286 | |
| 1287 | uint32_t type; |
| 1288 | const void *data; |
| 1289 | size_t size; |
| 1290 | if (!strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_AVC)) { |
| 1291 | if (!track->meta->findData(kKeyAVCC, &type, &data, &size) |
| 1292 | || type != kTypeAVCC) { |
| 1293 | return ERROR_MALFORMED; |
| 1294 | } |
| 1295 | } else if (!strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_MPEG4) |
| 1296 | || !strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AAC)) { |
| 1297 | if (!track->meta->findData(kKeyESDS, &type, &data, &size) |
| 1298 | || type != kTypeESDS) { |
| 1299 | return ERROR_MALFORMED; |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | return OK; |
| 1304 | } |
| 1305 | |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 1306 | status_t MPEG4Extractor::updateAudioTrackInfoFromESDS_MPEG4Audio( |
| 1307 | const void *esds_data, size_t esds_size) { |
| 1308 | ESDS esds(esds_data, esds_size); |
Andreas Huber | d0332ad | 2010-04-12 16:05:57 -0700 | [diff] [blame] | 1309 | |
| 1310 | uint8_t objectTypeIndication; |
| 1311 | if (esds.getObjectTypeIndication(&objectTypeIndication) != OK) { |
| 1312 | return ERROR_MALFORMED; |
| 1313 | } |
| 1314 | |
| 1315 | if (objectTypeIndication == 0xe1) { |
| 1316 | // This isn't MPEG4 audio at all, it's QCELP 14k... |
| 1317 | mLastTrack->meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_QCELP); |
| 1318 | return OK; |
| 1319 | } |
| 1320 | |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 1321 | const uint8_t *csd; |
| 1322 | size_t csd_size; |
| 1323 | if (esds.getCodecSpecificInfo( |
| 1324 | (const void **)&csd, &csd_size) != OK) { |
| 1325 | return ERROR_MALFORMED; |
| 1326 | } |
| 1327 | |
| 1328 | #if 0 |
| 1329 | printf("ESD of size %d\n", csd_size); |
| 1330 | hexdump(csd, csd_size); |
| 1331 | #endif |
| 1332 | |
Andreas Huber | 08c94b2 | 2010-08-18 09:58:30 -0700 | [diff] [blame] | 1333 | if (csd_size == 0) { |
| 1334 | // There's no further information, i.e. no codec specific data |
| 1335 | // Let's assume that the information provided in the mpeg4 headers |
| 1336 | // is accurate and hope for the best. |
| 1337 | |
| 1338 | return OK; |
| 1339 | } |
| 1340 | |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 1341 | if (csd_size < 2) { |
| 1342 | return ERROR_MALFORMED; |
| 1343 | } |
| 1344 | |
| 1345 | uint32_t objectType = csd[0] >> 3; |
| 1346 | |
| 1347 | if (objectType == 31) { |
| 1348 | return ERROR_UNSUPPORTED; |
| 1349 | } |
| 1350 | |
| 1351 | uint32_t freqIndex = (csd[0] & 7) << 1 | (csd[1] >> 7); |
| 1352 | int32_t sampleRate = 0; |
| 1353 | int32_t numChannels = 0; |
| 1354 | if (freqIndex == 15) { |
| 1355 | if (csd_size < 5) { |
| 1356 | return ERROR_MALFORMED; |
| 1357 | } |
| 1358 | |
| 1359 | sampleRate = (csd[1] & 0x7f) << 17 |
| 1360 | | csd[2] << 9 |
| 1361 | | csd[3] << 1 |
| 1362 | | (csd[4] >> 7); |
| 1363 | |
| 1364 | numChannels = (csd[4] >> 3) & 15; |
| 1365 | } else { |
Andreas Huber | cc14a83 | 2010-07-20 09:21:17 -0700 | [diff] [blame] | 1366 | static uint32_t kSamplingRate[] = { |
| 1367 | 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, |
| 1368 | 16000, 12000, 11025, 8000, 7350 |
| 1369 | }; |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 1370 | |
| 1371 | if (freqIndex == 13 || freqIndex == 14) { |
| 1372 | return ERROR_MALFORMED; |
| 1373 | } |
| 1374 | |
| 1375 | sampleRate = kSamplingRate[freqIndex]; |
| 1376 | numChannels = (csd[1] >> 3) & 15; |
| 1377 | } |
| 1378 | |
| 1379 | if (numChannels == 0) { |
| 1380 | return ERROR_UNSUPPORTED; |
| 1381 | } |
| 1382 | |
| 1383 | int32_t prevSampleRate; |
| 1384 | CHECK(mLastTrack->meta->findInt32(kKeySampleRate, &prevSampleRate)); |
| 1385 | |
| 1386 | if (prevSampleRate != sampleRate) { |
Andreas Huber | 4a9375e | 2010-02-09 11:54:33 -0800 | [diff] [blame] | 1387 | LOGV("mpeg4 audio sample rate different from previous setting. " |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 1388 | "was: %d, now: %d", prevSampleRate, sampleRate); |
| 1389 | } |
| 1390 | |
| 1391 | mLastTrack->meta->setInt32(kKeySampleRate, sampleRate); |
| 1392 | |
| 1393 | int32_t prevChannelCount; |
| 1394 | CHECK(mLastTrack->meta->findInt32(kKeyChannelCount, &prevChannelCount)); |
| 1395 | |
| 1396 | if (prevChannelCount != numChannels) { |
Andreas Huber | 4a9375e | 2010-02-09 11:54:33 -0800 | [diff] [blame] | 1397 | LOGV("mpeg4 audio channel count different from previous setting. " |
Andreas Huber | d231596 | 2010-01-29 14:46:59 -0800 | [diff] [blame] | 1398 | "was: %d, now: %d", prevChannelCount, numChannels); |
| 1399 | } |
| 1400 | |
| 1401 | mLastTrack->meta->setInt32(kKeyChannelCount, numChannels); |
| 1402 | |
| 1403 | return OK; |
| 1404 | } |
| 1405 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1406 | //////////////////////////////////////////////////////////////////////////////// |
| 1407 | |
| 1408 | MPEG4Source::MPEG4Source( |
| 1409 | const sp<MetaData> &format, |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 1410 | const sp<DataSource> &dataSource, |
Andreas Huber | fa8de75 | 2009-10-08 10:07:49 -0700 | [diff] [blame] | 1411 | int32_t timeScale, |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 1412 | const sp<SampleTable> &sampleTable) |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1413 | : mFormat(format), |
| 1414 | mDataSource(dataSource), |
Andreas Huber | fa8de75 | 2009-10-08 10:07:49 -0700 | [diff] [blame] | 1415 | mTimescale(timeScale), |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1416 | mSampleTable(sampleTable), |
| 1417 | mCurrentSampleIndex(0), |
| 1418 | mIsAVC(false), |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1419 | mNALLengthSize(0), |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1420 | mStarted(false), |
| 1421 | mGroup(NULL), |
| 1422 | mBuffer(NULL), |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1423 | mWantsNALFragments(false), |
Andreas Huber | 8a43277 | 2009-07-28 10:03:13 -0700 | [diff] [blame] | 1424 | mSrcBuffer(NULL) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1425 | const char *mime; |
| 1426 | bool success = mFormat->findCString(kKeyMIMEType, &mime); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1427 | CHECK(success); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1428 | |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 1429 | mIsAVC = !strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_AVC); |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1430 | |
| 1431 | if (mIsAVC) { |
| 1432 | uint32_t type; |
| 1433 | const void *data; |
| 1434 | size_t size; |
| 1435 | CHECK(format->findData(kKeyAVCC, &type, &data, &size)); |
| 1436 | |
| 1437 | const uint8_t *ptr = (const uint8_t *)data; |
| 1438 | |
| 1439 | CHECK(size >= 7); |
Andreas Huber | 31dc911 | 2010-11-04 11:50:27 -0700 | [diff] [blame] | 1440 | CHECK_EQ((unsigned)ptr[0], 1u); // configurationVersion == 1 |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1441 | |
| 1442 | // The number of bytes used to encode the length of a NAL unit. |
| 1443 | mNALLengthSize = 1 + (ptr[4] & 3); |
| 1444 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1445 | } |
| 1446 | |
| 1447 | MPEG4Source::~MPEG4Source() { |
| 1448 | if (mStarted) { |
| 1449 | stop(); |
| 1450 | } |
| 1451 | } |
| 1452 | |
| 1453 | status_t MPEG4Source::start(MetaData *params) { |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1454 | Mutex::Autolock autoLock(mLock); |
| 1455 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1456 | CHECK(!mStarted); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1457 | |
| 1458 | int32_t val; |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1459 | if (params && params->findInt32(kKeyWantsNALFragments, &val) |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1460 | && val != 0) { |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1461 | mWantsNALFragments = true; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1462 | } else { |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1463 | mWantsNALFragments = false; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1464 | } |
| 1465 | |
| 1466 | mGroup = new MediaBufferGroup; |
| 1467 | |
Andreas Huber | 1bceff9 | 2009-11-23 14:03:32 -0800 | [diff] [blame] | 1468 | int32_t max_size; |
| 1469 | CHECK(mFormat->findInt32(kKeyMaxInputSize, &max_size)); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1470 | |
Andreas Huber | 1bceff9 | 2009-11-23 14:03:32 -0800 | [diff] [blame] | 1471 | mGroup->add_buffer(new MediaBuffer(max_size)); |
Andreas Huber | 8a43277 | 2009-07-28 10:03:13 -0700 | [diff] [blame] | 1472 | |
| 1473 | mSrcBuffer = new uint8_t[max_size]; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1474 | |
| 1475 | mStarted = true; |
| 1476 | |
| 1477 | return OK; |
| 1478 | } |
| 1479 | |
| 1480 | status_t MPEG4Source::stop() { |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1481 | Mutex::Autolock autoLock(mLock); |
| 1482 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1483 | CHECK(mStarted); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1484 | |
| 1485 | if (mBuffer != NULL) { |
| 1486 | mBuffer->release(); |
| 1487 | mBuffer = NULL; |
| 1488 | } |
| 1489 | |
Andreas Huber | 8a43277 | 2009-07-28 10:03:13 -0700 | [diff] [blame] | 1490 | delete[] mSrcBuffer; |
| 1491 | mSrcBuffer = NULL; |
| 1492 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1493 | delete mGroup; |
| 1494 | mGroup = NULL; |
| 1495 | |
| 1496 | mStarted = false; |
| 1497 | mCurrentSampleIndex = 0; |
| 1498 | |
| 1499 | return OK; |
| 1500 | } |
| 1501 | |
| 1502 | sp<MetaData> MPEG4Source::getFormat() { |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1503 | Mutex::Autolock autoLock(mLock); |
| 1504 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1505 | return mFormat; |
| 1506 | } |
| 1507 | |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1508 | size_t MPEG4Source::parseNALSize(const uint8_t *data) const { |
| 1509 | switch (mNALLengthSize) { |
| 1510 | case 1: |
| 1511 | return *data; |
| 1512 | case 2: |
| 1513 | return U16_AT(data); |
| 1514 | case 3: |
| 1515 | return ((size_t)data[0] << 16) | U16_AT(&data[1]); |
| 1516 | case 4: |
| 1517 | return U32_AT(data); |
| 1518 | } |
| 1519 | |
| 1520 | // This cannot happen, mNALLengthSize springs to life by adding 1 to |
| 1521 | // a 2-bit integer. |
| 1522 | CHECK(!"Should not be here."); |
| 1523 | |
| 1524 | return 0; |
| 1525 | } |
| 1526 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1527 | status_t MPEG4Source::read( |
| 1528 | MediaBuffer **out, const ReadOptions *options) { |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1529 | Mutex::Autolock autoLock(mLock); |
| 1530 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1531 | CHECK(mStarted); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1532 | |
| 1533 | *out = NULL; |
| 1534 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1535 | int64_t targetSampleTimeUs = -1; |
| 1536 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1537 | int64_t seekTimeUs; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1538 | ReadOptions::SeekMode mode; |
| 1539 | if (options && options->getSeekTo(&seekTimeUs, &mode)) { |
| 1540 | uint32_t findFlags = 0; |
| 1541 | switch (mode) { |
| 1542 | case ReadOptions::SEEK_PREVIOUS_SYNC: |
| 1543 | findFlags = SampleTable::kFlagBefore; |
| 1544 | break; |
| 1545 | case ReadOptions::SEEK_NEXT_SYNC: |
| 1546 | findFlags = SampleTable::kFlagAfter; |
| 1547 | break; |
| 1548 | case ReadOptions::SEEK_CLOSEST_SYNC: |
| 1549 | case ReadOptions::SEEK_CLOSEST: |
| 1550 | findFlags = SampleTable::kFlagClosest; |
| 1551 | break; |
| 1552 | default: |
| 1553 | CHECK(!"Should not be here."); |
| 1554 | break; |
| 1555 | } |
| 1556 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1557 | uint32_t sampleIndex; |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1558 | status_t err = mSampleTable->findSampleAtTime( |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1559 | seekTimeUs * mTimescale / 1000000, |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1560 | &sampleIndex, findFlags); |
| 1561 | |
| 1562 | if (mode == ReadOptions::SEEK_CLOSEST) { |
| 1563 | // We found the closest sample already, now we want the sync |
| 1564 | // sample preceding it (or the sample itself of course), even |
| 1565 | // if the subsequent sync sample is closer. |
| 1566 | findFlags = SampleTable::kFlagBefore; |
| 1567 | } |
| 1568 | |
| 1569 | uint32_t syncSampleIndex; |
| 1570 | if (err == OK) { |
| 1571 | err = mSampleTable->findSyncSampleNear( |
| 1572 | sampleIndex, &syncSampleIndex, findFlags); |
| 1573 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1574 | |
| 1575 | if (err != OK) { |
Andreas Huber | d7d22eb | 2010-02-23 13:45:33 -0800 | [diff] [blame] | 1576 | if (err == ERROR_OUT_OF_RANGE) { |
| 1577 | // An attempt to seek past the end of the stream would |
| 1578 | // normally cause this ERROR_OUT_OF_RANGE error. Propagating |
| 1579 | // this all the way to the MediaPlayer would cause abnormal |
| 1580 | // termination. Legacy behaviour appears to be to behave as if |
| 1581 | // we had seeked to the end of stream, ending normally. |
| 1582 | err = ERROR_END_OF_STREAM; |
| 1583 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1584 | return err; |
| 1585 | } |
| 1586 | |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1587 | uint32_t sampleTime; |
Andreas Huber | 31dc911 | 2010-11-04 11:50:27 -0700 | [diff] [blame] | 1588 | CHECK_EQ((status_t)OK, mSampleTable->getMetaDataForSample( |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1589 | sampleIndex, NULL, NULL, &sampleTime)); |
| 1590 | |
| 1591 | if (mode == ReadOptions::SEEK_CLOSEST) { |
| 1592 | targetSampleTimeUs = (sampleTime * 1000000ll) / mTimescale; |
| 1593 | } |
| 1594 | |
| 1595 | #if 0 |
| 1596 | uint32_t syncSampleTime; |
| 1597 | CHECK_EQ(OK, mSampleTable->getMetaDataForSample( |
| 1598 | syncSampleIndex, NULL, NULL, &syncSampleTime)); |
| 1599 | |
| 1600 | LOGI("seek to time %lld us => sample at time %lld us, " |
| 1601 | "sync sample at time %lld us", |
| 1602 | seekTimeUs, |
| 1603 | sampleTime * 1000000ll / mTimescale, |
| 1604 | syncSampleTime * 1000000ll / mTimescale); |
| 1605 | #endif |
| 1606 | |
| 1607 | mCurrentSampleIndex = syncSampleIndex; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1608 | if (mBuffer != NULL) { |
| 1609 | mBuffer->release(); |
| 1610 | mBuffer = NULL; |
| 1611 | } |
| 1612 | |
| 1613 | // fall through |
| 1614 | } |
| 1615 | |
Andreas Huber | 8a43277 | 2009-07-28 10:03:13 -0700 | [diff] [blame] | 1616 | off_t offset; |
| 1617 | size_t size; |
Andreas Huber | 8a43277 | 2009-07-28 10:03:13 -0700 | [diff] [blame] | 1618 | uint32_t dts; |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 1619 | bool isSyncSample; |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1620 | bool newBuffer = false; |
| 1621 | if (mBuffer == NULL) { |
| 1622 | newBuffer = true; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1623 | |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 1624 | status_t err = |
| 1625 | mSampleTable->getMetaDataForSample( |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 1626 | mCurrentSampleIndex, &offset, &size, &dts, &isSyncSample); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1627 | |
| 1628 | if (err != OK) { |
| 1629 | return err; |
| 1630 | } |
| 1631 | |
| 1632 | err = mGroup->acquire_buffer(&mBuffer); |
Andreas Huber | 1faa92a | 2010-01-19 10:39:21 -0800 | [diff] [blame] | 1633 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1634 | if (err != OK) { |
Andreas Huber | 31dc911 | 2010-11-04 11:50:27 -0700 | [diff] [blame] | 1635 | CHECK(mBuffer == NULL); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1636 | return err; |
| 1637 | } |
Andreas Huber | 8a43277 | 2009-07-28 10:03:13 -0700 | [diff] [blame] | 1638 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1639 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1640 | if (!mIsAVC || mWantsNALFragments) { |
| 1641 | if (newBuffer) { |
| 1642 | ssize_t num_bytes_read = |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 1643 | mDataSource->readAt(offset, (uint8_t *)mBuffer->data(), size); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1644 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1645 | if (num_bytes_read < (ssize_t)size) { |
| 1646 | mBuffer->release(); |
| 1647 | mBuffer = NULL; |
| 1648 | |
| 1649 | return ERROR_IO; |
| 1650 | } |
| 1651 | |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1652 | CHECK(mBuffer != NULL); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1653 | mBuffer->set_range(0, size); |
| 1654 | mBuffer->meta_data()->clear(); |
Andreas Huber | fa8de75 | 2009-10-08 10:07:49 -0700 | [diff] [blame] | 1655 | mBuffer->meta_data()->setInt64( |
| 1656 | kKeyTime, ((int64_t)dts * 1000000) / mTimescale); |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1657 | |
| 1658 | if (targetSampleTimeUs >= 0) { |
| 1659 | mBuffer->meta_data()->setInt64( |
| 1660 | kKeyTargetTime, targetSampleTimeUs); |
| 1661 | } |
| 1662 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 1663 | if (isSyncSample) { |
| 1664 | mBuffer->meta_data()->setInt32(kKeyIsSyncFrame, 1); |
| 1665 | } |
| 1666 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1667 | ++mCurrentSampleIndex; |
| 1668 | } |
| 1669 | |
| 1670 | if (!mIsAVC) { |
| 1671 | *out = mBuffer; |
| 1672 | mBuffer = NULL; |
| 1673 | |
| 1674 | return OK; |
| 1675 | } |
| 1676 | |
| 1677 | // Each NAL unit is split up into its constituent fragments and |
| 1678 | // each one of them returned in its own buffer. |
| 1679 | |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1680 | CHECK(mBuffer->range_length() >= mNALLengthSize); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1681 | |
| 1682 | const uint8_t *src = |
| 1683 | (const uint8_t *)mBuffer->data() + mBuffer->range_offset(); |
| 1684 | |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1685 | size_t nal_size = parseNALSize(src); |
Andreas Huber | 909255a | 2010-01-14 14:13:15 -0800 | [diff] [blame] | 1686 | if (mBuffer->range_length() < mNALLengthSize + nal_size) { |
| 1687 | LOGE("incomplete NAL unit."); |
| 1688 | |
| 1689 | mBuffer->release(); |
| 1690 | mBuffer = NULL; |
| 1691 | |
| 1692 | return ERROR_MALFORMED; |
| 1693 | } |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1694 | |
| 1695 | MediaBuffer *clone = mBuffer->clone(); |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1696 | CHECK(clone != NULL); |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1697 | clone->set_range(mBuffer->range_offset() + mNALLengthSize, nal_size); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1698 | |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1699 | CHECK(mBuffer != NULL); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1700 | mBuffer->set_range( |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1701 | mBuffer->range_offset() + mNALLengthSize + nal_size, |
| 1702 | mBuffer->range_length() - mNALLengthSize - nal_size); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1703 | |
| 1704 | if (mBuffer->range_length() == 0) { |
| 1705 | mBuffer->release(); |
| 1706 | mBuffer = NULL; |
| 1707 | } |
| 1708 | |
| 1709 | *out = clone; |
| 1710 | |
| 1711 | return OK; |
| 1712 | } else { |
| 1713 | // Whole NAL units are returned but each fragment is prefixed by |
| 1714 | // the start code (0x00 00 00 01). |
| 1715 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1716 | ssize_t num_bytes_read = |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 1717 | mDataSource->readAt(offset, mSrcBuffer, size); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1718 | |
| 1719 | if (num_bytes_read < (ssize_t)size) { |
| 1720 | mBuffer->release(); |
| 1721 | mBuffer = NULL; |
| 1722 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1723 | return ERROR_IO; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1724 | } |
| 1725 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1726 | uint8_t *dstData = (uint8_t *)mBuffer->data(); |
| 1727 | size_t srcOffset = 0; |
| 1728 | size_t dstOffset = 0; |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1729 | |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1730 | while (srcOffset < size) { |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1731 | CHECK(srcOffset + mNALLengthSize <= size); |
| 1732 | size_t nalLength = parseNALSize(&mSrcBuffer[srcOffset]); |
| 1733 | srcOffset += mNALLengthSize; |
Andreas Huber | 909255a | 2010-01-14 14:13:15 -0800 | [diff] [blame] | 1734 | |
| 1735 | if (srcOffset + nalLength > size) { |
| 1736 | mBuffer->release(); |
| 1737 | mBuffer = NULL; |
| 1738 | |
| 1739 | return ERROR_MALFORMED; |
| 1740 | } |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1741 | |
| 1742 | if (nalLength == 0) { |
| 1743 | continue; |
| 1744 | } |
| 1745 | |
| 1746 | CHECK(dstOffset + 4 <= mBuffer->size()); |
| 1747 | |
| 1748 | dstData[dstOffset++] = 0; |
| 1749 | dstData[dstOffset++] = 0; |
| 1750 | dstData[dstOffset++] = 0; |
| 1751 | dstData[dstOffset++] = 1; |
| 1752 | memcpy(&dstData[dstOffset], &mSrcBuffer[srcOffset], nalLength); |
| 1753 | srcOffset += nalLength; |
| 1754 | dstOffset += nalLength; |
| 1755 | } |
Andreas Huber | db5d662 | 2010-01-12 16:30:44 -0800 | [diff] [blame] | 1756 | CHECK_EQ(srcOffset, size); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1757 | |
Andreas Huber | ba7ec91 | 2010-02-12 10:42:02 -0800 | [diff] [blame] | 1758 | CHECK(mBuffer != NULL); |
Andreas Huber | 4f5e602 | 2009-08-19 09:29:34 -0700 | [diff] [blame] | 1759 | mBuffer->set_range(0, dstOffset); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1760 | mBuffer->meta_data()->clear(); |
Andreas Huber | fa8de75 | 2009-10-08 10:07:49 -0700 | [diff] [blame] | 1761 | mBuffer->meta_data()->setInt64( |
| 1762 | kKeyTime, ((int64_t)dts * 1000000) / mTimescale); |
Andreas Huber | 6624c9f | 2010-07-20 15:04:28 -0700 | [diff] [blame] | 1763 | |
| 1764 | if (targetSampleTimeUs >= 0) { |
| 1765 | mBuffer->meta_data()->setInt64( |
| 1766 | kKeyTargetTime, targetSampleTimeUs); |
| 1767 | } |
| 1768 | |
Andreas Huber | ad98d38 | 2010-08-06 14:13:10 -0700 | [diff] [blame] | 1769 | if (isSyncSample) { |
| 1770 | mBuffer->meta_data()->setInt32(kKeyIsSyncFrame, 1); |
| 1771 | } |
| 1772 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1773 | ++mCurrentSampleIndex; |
| 1774 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1775 | *out = mBuffer; |
| 1776 | mBuffer = NULL; |
| 1777 | |
| 1778 | return OK; |
| 1779 | } |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1780 | } |
| 1781 | |
Andreas Huber | 261eb0c | 2010-05-27 09:59:54 -0700 | [diff] [blame] | 1782 | static bool LegacySniffMPEG4( |
Andreas Huber | be06d26 | 2009-08-14 14:37:10 -0700 | [diff] [blame] | 1783 | const sp<DataSource> &source, String8 *mimeType, float *confidence) { |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1784 | uint8_t header[8]; |
| 1785 | |
Andreas Huber | 9a12baf | 2009-10-23 10:22:30 -0700 | [diff] [blame] | 1786 | ssize_t n = source->readAt(4, header, sizeof(header)); |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1787 | if (n < (ssize_t)sizeof(header)) { |
| 1788 | return false; |
| 1789 | } |
| 1790 | |
| 1791 | if (!memcmp(header, "ftyp3gp", 7) || !memcmp(header, "ftypmp42", 8) |
James Dong | e113066 | 2010-04-13 15:06:41 -0700 | [diff] [blame] | 1792 | || !memcmp(header, "ftyp3gr6", 8) || !memcmp(header, "ftyp3gs6", 8) |
| 1793 | || !memcmp(header, "ftyp3ge6", 8) || !memcmp(header, "ftyp3gg6", 8) |
Andreas Huber | 6bce6d8 | 2009-11-03 16:00:58 -0800 | [diff] [blame] | 1794 | || !memcmp(header, "ftypisom", 8) || !memcmp(header, "ftypM4V ", 8) |
Andreas Huber | dfb8eee | 2010-02-25 15:59:24 -0800 | [diff] [blame] | 1795 | || !memcmp(header, "ftypM4A ", 8) || !memcmp(header, "ftypf4v ", 8) |
Andreas Huber | eea1eef | 2010-04-01 11:42:50 -0700 | [diff] [blame] | 1796 | || !memcmp(header, "ftypkddi", 8) || !memcmp(header, "ftypM4VP", 8)) { |
Andreas Huber | e6c4096 | 2009-09-10 14:13:30 -0700 | [diff] [blame] | 1797 | *mimeType = MEDIA_MIMETYPE_CONTAINER_MPEG4; |
Andreas Huber | efdd088 | 2010-08-25 11:09:41 -0700 | [diff] [blame] | 1798 | *confidence = 0.4; |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1799 | |
| 1800 | return true; |
| 1801 | } |
| 1802 | |
| 1803 | return false; |
| 1804 | } |
| 1805 | |
Andreas Huber | 261eb0c | 2010-05-27 09:59:54 -0700 | [diff] [blame] | 1806 | static bool isCompatibleBrand(uint32_t fourcc) { |
| 1807 | static const uint32_t kCompatibleBrands[] = { |
| 1808 | FOURCC('i', 's', 'o', 'm'), |
| 1809 | FOURCC('i', 's', 'o', '2'), |
| 1810 | FOURCC('a', 'v', 'c', '1'), |
| 1811 | FOURCC('3', 'g', 'p', '4'), |
| 1812 | FOURCC('m', 'p', '4', '1'), |
| 1813 | FOURCC('m', 'p', '4', '2'), |
| 1814 | }; |
| 1815 | |
| 1816 | for (size_t i = 0; |
| 1817 | i < sizeof(kCompatibleBrands) / sizeof(kCompatibleBrands[0]); |
| 1818 | ++i) { |
| 1819 | if (kCompatibleBrands[i] == fourcc) { |
| 1820 | return true; |
| 1821 | } |
| 1822 | } |
| 1823 | |
| 1824 | return false; |
| 1825 | } |
| 1826 | |
| 1827 | // Attempt to actually parse the 'ftyp' atom and determine if a suitable |
| 1828 | // compatible brand is present. |
| 1829 | static bool BetterSniffMPEG4( |
| 1830 | const sp<DataSource> &source, String8 *mimeType, float *confidence) { |
| 1831 | uint8_t header[12]; |
| 1832 | if (source->readAt(0, header, 12) != 12 |
| 1833 | || memcmp("ftyp", &header[4], 4)) { |
| 1834 | return false; |
| 1835 | } |
| 1836 | |
| 1837 | size_t atomSize = U32_AT(&header[0]); |
| 1838 | if (atomSize < 16 || (atomSize % 4) != 0) { |
| 1839 | return false; |
| 1840 | } |
| 1841 | |
| 1842 | bool success = false; |
| 1843 | if (isCompatibleBrand(U32_AT(&header[8]))) { |
| 1844 | success = true; |
| 1845 | } else { |
| 1846 | size_t numCompatibleBrands = (atomSize - 16) / 4; |
| 1847 | for (size_t i = 0; i < numCompatibleBrands; ++i) { |
| 1848 | uint8_t tmp[4]; |
| 1849 | if (source->readAt(16 + i * 4, tmp, 4) != 4) { |
| 1850 | return false; |
| 1851 | } |
| 1852 | |
| 1853 | if (isCompatibleBrand(U32_AT(&tmp[0]))) { |
| 1854 | success = true; |
| 1855 | break; |
| 1856 | } |
| 1857 | } |
| 1858 | } |
| 1859 | |
| 1860 | if (!success) { |
| 1861 | return false; |
| 1862 | } |
| 1863 | |
| 1864 | *mimeType = MEDIA_MIMETYPE_CONTAINER_MPEG4; |
Andreas Huber | efdd088 | 2010-08-25 11:09:41 -0700 | [diff] [blame] | 1865 | *confidence = 0.4f; |
Andreas Huber | 261eb0c | 2010-05-27 09:59:54 -0700 | [diff] [blame] | 1866 | |
| 1867 | return true; |
| 1868 | } |
| 1869 | |
| 1870 | bool SniffMPEG4( |
Andreas Huber | efdd088 | 2010-08-25 11:09:41 -0700 | [diff] [blame] | 1871 | const sp<DataSource> &source, String8 *mimeType, float *confidence, |
| 1872 | sp<AMessage> *) { |
Andreas Huber | 261eb0c | 2010-05-27 09:59:54 -0700 | [diff] [blame] | 1873 | if (BetterSniffMPEG4(source, mimeType, confidence)) { |
| 1874 | return true; |
| 1875 | } |
| 1876 | |
| 1877 | if (LegacySniffMPEG4(source, mimeType, confidence)) { |
| 1878 | LOGW("Identified supported mpeg4 through LegacySniffMPEG4."); |
| 1879 | return true; |
| 1880 | } |
| 1881 | |
| 1882 | return false; |
| 1883 | } |
| 1884 | |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1885 | } // namespace android |
| 1886 | |