Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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_NDEBUG 0 |
| 18 | #define LOG_TAG "LiveSession" |
| 19 | #include <utils/Log.h> |
| 20 | |
| 21 | #include "include/LiveSession.h" |
| 22 | |
| 23 | #include "LiveDataSource.h" |
| 24 | |
| 25 | #include "include/M3UParser.h" |
Andreas Huber | 1156dc9 | 2011-03-08 15:59:28 -0800 | [diff] [blame] | 26 | #include "include/HTTPBase.h" |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 27 | |
| 28 | #include <cutils/properties.h> |
| 29 | #include <media/stagefright/foundation/hexdump.h> |
| 30 | #include <media/stagefright/foundation/ABuffer.h> |
| 31 | #include <media/stagefright/foundation/ADebug.h> |
| 32 | #include <media/stagefright/foundation/AMessage.h> |
| 33 | #include <media/stagefright/DataSource.h> |
| 34 | #include <media/stagefright/FileSource.h> |
| 35 | #include <media/stagefright/MediaErrors.h> |
| 36 | |
| 37 | #include <ctype.h> |
| 38 | #include <openssl/aes.h> |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 39 | #include <openssl/md5.h> |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 40 | |
| 41 | namespace android { |
| 42 | |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 43 | LiveSession::LiveSession( |
| 44 | const sp<AMessage> ¬ify, uint32_t flags, bool uidValid, uid_t uid) |
| 45 | : mNotify(notify), |
| 46 | mFlags(flags), |
Andreas Huber | 9b80c2b | 2011-06-30 15:47:02 -0700 | [diff] [blame] | 47 | mUIDValid(uidValid), |
| 48 | mUID(uid), |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 49 | mInPreparationPhase(true), |
Andreas Huber | 7314fa1 | 2011-02-24 14:42:48 -0800 | [diff] [blame] | 50 | mDataSource(new LiveDataSource), |
| 51 | mHTTPDataSource( |
Andreas Huber | 1156dc9 | 2011-03-08 15:59:28 -0800 | [diff] [blame] | 52 | HTTPBase::Create( |
Andreas Huber | 7314fa1 | 2011-02-24 14:42:48 -0800 | [diff] [blame] | 53 | (mFlags & kFlagIncognito) |
Andreas Huber | 1156dc9 | 2011-03-08 15:59:28 -0800 | [diff] [blame] | 54 | ? HTTPBase::kFlagIncognito |
Andreas Huber | 7314fa1 | 2011-02-24 14:42:48 -0800 | [diff] [blame] | 55 | : 0)), |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 56 | mPrevBandwidthIndex(-1), |
| 57 | mLastPlaylistFetchTimeUs(-1), |
| 58 | mSeqNumber(-1), |
| 59 | mSeekTimeUs(-1), |
| 60 | mNumRetries(0), |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 61 | mStartOfPlayback(true), |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 62 | mDurationUs(-1), |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 63 | mDurationFixed(false), |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 64 | mSeekDone(false), |
Andreas Huber | ab8a0ba | 2011-01-31 16:18:49 -0800 | [diff] [blame] | 65 | mDisconnectPending(false), |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 66 | mMonitorQueueGeneration(0), |
| 67 | mRefreshState(INITIAL_MINIMUM_RELOAD_DELAY) { |
Andreas Huber | 9b80c2b | 2011-06-30 15:47:02 -0700 | [diff] [blame] | 68 | if (mUIDValid) { |
| 69 | mHTTPDataSource->setUID(mUID); |
| 70 | } |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | LiveSession::~LiveSession() { |
| 74 | } |
| 75 | |
| 76 | sp<DataSource> LiveSession::getDataSource() { |
| 77 | return mDataSource; |
| 78 | } |
| 79 | |
Andreas Huber | ad0d9c9 | 2011-04-19 11:50:27 -0700 | [diff] [blame] | 80 | void LiveSession::connect( |
| 81 | const char *url, const KeyedVector<String8, String8> *headers) { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 82 | sp<AMessage> msg = new AMessage(kWhatConnect, id()); |
| 83 | msg->setString("url", url); |
Andreas Huber | ad0d9c9 | 2011-04-19 11:50:27 -0700 | [diff] [blame] | 84 | |
| 85 | if (headers != NULL) { |
| 86 | msg->setPointer( |
| 87 | "headers", |
| 88 | new KeyedVector<String8, String8>(*headers)); |
| 89 | } |
| 90 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 91 | msg->post(); |
| 92 | } |
| 93 | |
| 94 | void LiveSession::disconnect() { |
Andreas Huber | ab8a0ba | 2011-01-31 16:18:49 -0800 | [diff] [blame] | 95 | Mutex::Autolock autoLock(mLock); |
| 96 | mDisconnectPending = true; |
| 97 | |
| 98 | mHTTPDataSource->disconnect(); |
| 99 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 100 | (new AMessage(kWhatDisconnect, id()))->post(); |
| 101 | } |
| 102 | |
| 103 | void LiveSession::seekTo(int64_t timeUs) { |
| 104 | Mutex::Autolock autoLock(mLock); |
| 105 | mSeekDone = false; |
| 106 | |
| 107 | sp<AMessage> msg = new AMessage(kWhatSeek, id()); |
| 108 | msg->setInt64("timeUs", timeUs); |
| 109 | msg->post(); |
| 110 | |
| 111 | while (!mSeekDone) { |
| 112 | mCondition.wait(mLock); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | void LiveSession::onMessageReceived(const sp<AMessage> &msg) { |
| 117 | switch (msg->what()) { |
| 118 | case kWhatConnect: |
| 119 | onConnect(msg); |
| 120 | break; |
| 121 | |
| 122 | case kWhatDisconnect: |
| 123 | onDisconnect(); |
| 124 | break; |
| 125 | |
| 126 | case kWhatMonitorQueue: |
| 127 | { |
| 128 | int32_t generation; |
| 129 | CHECK(msg->findInt32("generation", &generation)); |
| 130 | |
| 131 | if (generation != mMonitorQueueGeneration) { |
| 132 | // Stale event |
| 133 | break; |
| 134 | } |
| 135 | |
| 136 | onMonitorQueue(); |
| 137 | break; |
| 138 | } |
| 139 | |
| 140 | case kWhatSeek: |
| 141 | onSeek(msg); |
| 142 | break; |
| 143 | |
| 144 | default: |
| 145 | TRESPASS(); |
| 146 | break; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | // static |
| 151 | int LiveSession::SortByBandwidth(const BandwidthItem *a, const BandwidthItem *b) { |
| 152 | if (a->mBandwidth < b->mBandwidth) { |
| 153 | return -1; |
| 154 | } else if (a->mBandwidth == b->mBandwidth) { |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | return 1; |
| 159 | } |
| 160 | |
| 161 | void LiveSession::onConnect(const sp<AMessage> &msg) { |
| 162 | AString url; |
| 163 | CHECK(msg->findString("url", &url)); |
| 164 | |
Andreas Huber | ad0d9c9 | 2011-04-19 11:50:27 -0700 | [diff] [blame] | 165 | KeyedVector<String8, String8> *headers = NULL; |
| 166 | if (!msg->findPointer("headers", (void **)&headers)) { |
| 167 | mExtraHeaders.clear(); |
| 168 | } else { |
| 169 | mExtraHeaders = *headers; |
| 170 | |
| 171 | delete headers; |
| 172 | headers = NULL; |
| 173 | } |
| 174 | |
James Dong | 53ae164 | 2012-08-17 13:41:59 -0700 | [diff] [blame] | 175 | ALOGI("onConnect <URL suppressed>"); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 176 | |
| 177 | mMasterURL = url; |
| 178 | |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 179 | bool dummy; |
| 180 | sp<M3UParser> playlist = fetchPlaylist(url.c_str(), &dummy); |
Andreas Huber | ab8a0ba | 2011-01-31 16:18:49 -0800 | [diff] [blame] | 181 | |
| 182 | if (playlist == NULL) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 183 | ALOGE("unable to fetch master playlist '%s'.", url.c_str()); |
Andreas Huber | ab8a0ba | 2011-01-31 16:18:49 -0800 | [diff] [blame] | 184 | |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 185 | signalEOS(ERROR_IO); |
Andreas Huber | ab8a0ba | 2011-01-31 16:18:49 -0800 | [diff] [blame] | 186 | return; |
| 187 | } |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 188 | |
| 189 | if (playlist->isVariantPlaylist()) { |
| 190 | for (size_t i = 0; i < playlist->size(); ++i) { |
| 191 | BandwidthItem item; |
| 192 | |
| 193 | sp<AMessage> meta; |
| 194 | playlist->itemAt(i, &item.mURI, &meta); |
| 195 | |
| 196 | unsigned long bandwidth; |
| 197 | CHECK(meta->findInt32("bandwidth", (int32_t *)&item.mBandwidth)); |
| 198 | |
| 199 | mBandwidthItems.push(item); |
| 200 | } |
| 201 | |
| 202 | CHECK_GT(mBandwidthItems.size(), 0u); |
| 203 | |
| 204 | mBandwidthItems.sort(SortByBandwidth); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | postMonitorQueue(); |
| 208 | } |
| 209 | |
| 210 | void LiveSession::onDisconnect() { |
Steve Block | df64d15 | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 211 | ALOGI("onDisconnect"); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 212 | |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 213 | signalEOS(ERROR_END_OF_STREAM); |
Andreas Huber | ab8a0ba | 2011-01-31 16:18:49 -0800 | [diff] [blame] | 214 | |
| 215 | Mutex::Autolock autoLock(mLock); |
| 216 | mDisconnectPending = false; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 217 | } |
| 218 | |
Andreas Huber | 2aa4cc0 | 2011-08-08 11:20:53 -0700 | [diff] [blame] | 219 | status_t LiveSession::fetchFile( |
| 220 | const char *url, sp<ABuffer> *out, |
| 221 | int64_t range_offset, int64_t range_length) { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 222 | *out = NULL; |
| 223 | |
| 224 | sp<DataSource> source; |
| 225 | |
| 226 | if (!strncasecmp(url, "file://", 7)) { |
| 227 | source = new FileSource(url + 7); |
Andreas Huber | 8cb0c41 | 2011-02-17 13:35:08 -0800 | [diff] [blame] | 228 | } else if (strncasecmp(url, "http://", 7) |
| 229 | && strncasecmp(url, "https://", 8)) { |
Andreas Huber | df42f94 | 2010-12-21 14:36:19 -0800 | [diff] [blame] | 230 | return ERROR_UNSUPPORTED; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 231 | } else { |
Andreas Huber | ab8a0ba | 2011-01-31 16:18:49 -0800 | [diff] [blame] | 232 | { |
| 233 | Mutex::Autolock autoLock(mLock); |
| 234 | |
| 235 | if (mDisconnectPending) { |
| 236 | return ERROR_IO; |
| 237 | } |
| 238 | } |
| 239 | |
Andreas Huber | 2aa4cc0 | 2011-08-08 11:20:53 -0700 | [diff] [blame] | 240 | KeyedVector<String8, String8> headers = mExtraHeaders; |
| 241 | if (range_offset > 0 || range_length >= 0) { |
| 242 | headers.add( |
| 243 | String8("Range"), |
| 244 | String8( |
| 245 | StringPrintf( |
| 246 | "bytes=%lld-%s", |
| 247 | range_offset, |
| 248 | range_length < 0 |
| 249 | ? "" : StringPrintf("%lld", range_offset + range_length - 1).c_str()).c_str())); |
| 250 | } |
| 251 | status_t err = mHTTPDataSource->connect(url, &headers); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 252 | |
| 253 | if (err != OK) { |
| 254 | return err; |
| 255 | } |
| 256 | |
| 257 | source = mHTTPDataSource; |
| 258 | } |
| 259 | |
| 260 | off64_t size; |
| 261 | status_t err = source->getSize(&size); |
| 262 | |
| 263 | if (err != OK) { |
| 264 | size = 65536; |
| 265 | } |
| 266 | |
| 267 | sp<ABuffer> buffer = new ABuffer(size); |
| 268 | buffer->setRange(0, 0); |
| 269 | |
| 270 | for (;;) { |
| 271 | size_t bufferRemaining = buffer->capacity() - buffer->size(); |
| 272 | |
| 273 | if (bufferRemaining == 0) { |
| 274 | bufferRemaining = 32768; |
| 275 | |
Steve Block | 3856b09 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 276 | ALOGV("increasing download buffer to %d bytes", |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 277 | buffer->size() + bufferRemaining); |
| 278 | |
| 279 | sp<ABuffer> copy = new ABuffer(buffer->size() + bufferRemaining); |
| 280 | memcpy(copy->data(), buffer->data(), buffer->size()); |
| 281 | copy->setRange(0, buffer->size()); |
| 282 | |
| 283 | buffer = copy; |
| 284 | } |
| 285 | |
Andreas Huber | 2aa4cc0 | 2011-08-08 11:20:53 -0700 | [diff] [blame] | 286 | size_t maxBytesToRead = bufferRemaining; |
| 287 | if (range_length >= 0) { |
| 288 | int64_t bytesLeftInRange = range_length - buffer->size(); |
| 289 | if (bytesLeftInRange < maxBytesToRead) { |
| 290 | maxBytesToRead = bytesLeftInRange; |
| 291 | |
| 292 | if (bytesLeftInRange == 0) { |
| 293 | break; |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 298 | ssize_t n = source->readAt( |
| 299 | buffer->size(), buffer->data() + buffer->size(), |
Andreas Huber | 2aa4cc0 | 2011-08-08 11:20:53 -0700 | [diff] [blame] | 300 | maxBytesToRead); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 301 | |
| 302 | if (n < 0) { |
Andreas Huber | 20ad3a3 | 2011-01-06 17:32:00 -0800 | [diff] [blame] | 303 | return n; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | if (n == 0) { |
| 307 | break; |
| 308 | } |
| 309 | |
| 310 | buffer->setRange(0, buffer->size() + (size_t)n); |
| 311 | } |
| 312 | |
| 313 | *out = buffer; |
| 314 | |
| 315 | return OK; |
| 316 | } |
| 317 | |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 318 | sp<M3UParser> LiveSession::fetchPlaylist(const char *url, bool *unchanged) { |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 319 | ALOGV("fetchPlaylist '%s'", url); |
| 320 | |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 321 | *unchanged = false; |
| 322 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 323 | sp<ABuffer> buffer; |
| 324 | status_t err = fetchFile(url, &buffer); |
| 325 | |
| 326 | if (err != OK) { |
| 327 | return NULL; |
| 328 | } |
| 329 | |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 330 | // MD5 functionality is not available on the simulator, treat all |
| 331 | // playlists as changed. |
| 332 | |
| 333 | #if defined(HAVE_ANDROID_OS) |
| 334 | uint8_t hash[16]; |
| 335 | |
| 336 | MD5_CTX m; |
| 337 | MD5_Init(&m); |
| 338 | MD5_Update(&m, buffer->data(), buffer->size()); |
| 339 | |
| 340 | MD5_Final(hash, &m); |
| 341 | |
| 342 | if (mPlaylist != NULL && !memcmp(hash, mPlaylistHash, 16)) { |
| 343 | // playlist unchanged |
| 344 | |
| 345 | if (mRefreshState != THIRD_UNCHANGED_RELOAD_ATTEMPT) { |
| 346 | mRefreshState = (RefreshState)(mRefreshState + 1); |
| 347 | } |
| 348 | |
| 349 | *unchanged = true; |
| 350 | |
Steve Block | 3856b09 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 351 | ALOGV("Playlist unchanged, refresh state is now %d", |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 352 | (int)mRefreshState); |
| 353 | |
| 354 | return NULL; |
| 355 | } |
| 356 | |
| 357 | memcpy(mPlaylistHash, hash, sizeof(hash)); |
| 358 | |
| 359 | mRefreshState = INITIAL_MINIMUM_RELOAD_DELAY; |
| 360 | #endif |
| 361 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 362 | sp<M3UParser> playlist = |
| 363 | new M3UParser(url, buffer->data(), buffer->size()); |
| 364 | |
| 365 | if (playlist->initCheck() != OK) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 366 | ALOGE("failed to parse .m3u8 playlist"); |
Andreas Huber | 9067e30 | 2011-06-21 11:55:34 -0700 | [diff] [blame] | 367 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 368 | return NULL; |
| 369 | } |
| 370 | |
| 371 | return playlist; |
| 372 | } |
| 373 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 374 | int64_t LiveSession::getSegmentStartTimeUs(int32_t seqNumber) const { |
| 375 | CHECK(mPlaylist != NULL); |
| 376 | |
| 377 | int32_t firstSeqNumberInPlaylist; |
| 378 | if (mPlaylist->meta() == NULL || !mPlaylist->meta()->findInt32( |
| 379 | "media-sequence", &firstSeqNumberInPlaylist)) { |
| 380 | firstSeqNumberInPlaylist = 0; |
| 381 | } |
| 382 | |
| 383 | int32_t lastSeqNumberInPlaylist = |
| 384 | firstSeqNumberInPlaylist + (int32_t)mPlaylist->size() - 1; |
| 385 | |
| 386 | CHECK_GE(seqNumber, firstSeqNumberInPlaylist); |
| 387 | CHECK_LE(seqNumber, lastSeqNumberInPlaylist); |
| 388 | |
| 389 | int64_t segmentStartUs = 0ll; |
| 390 | for (int32_t index = 0; |
| 391 | index < seqNumber - firstSeqNumberInPlaylist; ++index) { |
| 392 | sp<AMessage> itemMeta; |
| 393 | CHECK(mPlaylist->itemAt( |
| 394 | index, NULL /* uri */, &itemMeta)); |
| 395 | |
| 396 | int64_t itemDurationUs; |
| 397 | CHECK(itemMeta->findInt64("durationUs", &itemDurationUs)); |
| 398 | |
| 399 | segmentStartUs += itemDurationUs; |
| 400 | } |
| 401 | |
| 402 | return segmentStartUs; |
| 403 | } |
| 404 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 405 | static double uniformRand() { |
| 406 | return (double)rand() / RAND_MAX; |
| 407 | } |
| 408 | |
| 409 | size_t LiveSession::getBandwidthIndex() { |
| 410 | if (mBandwidthItems.size() == 0) { |
| 411 | return 0; |
| 412 | } |
| 413 | |
| 414 | #if 1 |
| 415 | int32_t bandwidthBps; |
| 416 | if (mHTTPDataSource != NULL |
| 417 | && mHTTPDataSource->estimateBandwidth(&bandwidthBps)) { |
Steve Block | 3856b09 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 418 | ALOGV("bandwidth estimated at %.2f kbps", bandwidthBps / 1024.0f); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 419 | } else { |
Steve Block | 3856b09 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 420 | ALOGV("no bandwidth estimate."); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 421 | return 0; // Pick the lowest bandwidth stream by default. |
| 422 | } |
| 423 | |
| 424 | char value[PROPERTY_VALUE_MAX]; |
| 425 | if (property_get("media.httplive.max-bw", value, NULL)) { |
| 426 | char *end; |
| 427 | long maxBw = strtoul(value, &end, 10); |
| 428 | if (end > value && *end == '\0') { |
| 429 | if (maxBw > 0 && bandwidthBps > maxBw) { |
Steve Block | 3856b09 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 430 | ALOGV("bandwidth capped to %ld bps", maxBw); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 431 | bandwidthBps = maxBw; |
| 432 | } |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | // Consider only 80% of the available bandwidth usable. |
| 437 | bandwidthBps = (bandwidthBps * 8) / 10; |
| 438 | |
| 439 | // Pick the highest bandwidth stream below or equal to estimated bandwidth. |
| 440 | |
| 441 | size_t index = mBandwidthItems.size() - 1; |
| 442 | while (index > 0 && mBandwidthItems.itemAt(index).mBandwidth |
| 443 | > (size_t)bandwidthBps) { |
| 444 | --index; |
| 445 | } |
| 446 | #elif 0 |
| 447 | // Change bandwidth at random() |
| 448 | size_t index = uniformRand() * mBandwidthItems.size(); |
| 449 | #elif 0 |
| 450 | // There's a 50% chance to stay on the current bandwidth and |
| 451 | // a 50% chance to switch to the next higher bandwidth (wrapping around |
| 452 | // to lowest) |
| 453 | const size_t kMinIndex = 0; |
| 454 | |
| 455 | size_t index; |
| 456 | if (mPrevBandwidthIndex < 0) { |
| 457 | index = kMinIndex; |
| 458 | } else if (uniformRand() < 0.5) { |
| 459 | index = (size_t)mPrevBandwidthIndex; |
| 460 | } else { |
| 461 | index = mPrevBandwidthIndex + 1; |
| 462 | if (index == mBandwidthItems.size()) { |
| 463 | index = kMinIndex; |
| 464 | } |
| 465 | } |
| 466 | #elif 0 |
| 467 | // Pick the highest bandwidth stream below or equal to 1.2 Mbit/sec |
| 468 | |
| 469 | size_t index = mBandwidthItems.size() - 1; |
| 470 | while (index > 0 && mBandwidthItems.itemAt(index).mBandwidth > 1200000) { |
| 471 | --index; |
| 472 | } |
| 473 | #else |
| 474 | size_t index = mBandwidthItems.size() - 1; // Highest bandwidth stream |
| 475 | #endif |
| 476 | |
| 477 | return index; |
| 478 | } |
| 479 | |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 480 | bool LiveSession::timeToRefreshPlaylist(int64_t nowUs) const { |
| 481 | if (mPlaylist == NULL) { |
| 482 | CHECK_EQ((int)mRefreshState, (int)INITIAL_MINIMUM_RELOAD_DELAY); |
| 483 | return true; |
| 484 | } |
| 485 | |
| 486 | int32_t targetDurationSecs; |
| 487 | CHECK(mPlaylist->meta()->findInt32("target-duration", &targetDurationSecs)); |
| 488 | |
| 489 | int64_t targetDurationUs = targetDurationSecs * 1000000ll; |
| 490 | |
| 491 | int64_t minPlaylistAgeUs; |
| 492 | |
| 493 | switch (mRefreshState) { |
| 494 | case INITIAL_MINIMUM_RELOAD_DELAY: |
| 495 | { |
| 496 | size_t n = mPlaylist->size(); |
| 497 | if (n > 0) { |
| 498 | sp<AMessage> itemMeta; |
| 499 | CHECK(mPlaylist->itemAt(n - 1, NULL /* uri */, &itemMeta)); |
| 500 | |
| 501 | int64_t itemDurationUs; |
| 502 | CHECK(itemMeta->findInt64("durationUs", &itemDurationUs)); |
| 503 | |
| 504 | minPlaylistAgeUs = itemDurationUs; |
| 505 | break; |
| 506 | } |
| 507 | |
| 508 | // fall through |
| 509 | } |
| 510 | |
| 511 | case FIRST_UNCHANGED_RELOAD_ATTEMPT: |
| 512 | { |
| 513 | minPlaylistAgeUs = targetDurationUs / 2; |
| 514 | break; |
| 515 | } |
| 516 | |
| 517 | case SECOND_UNCHANGED_RELOAD_ATTEMPT: |
| 518 | { |
| 519 | minPlaylistAgeUs = (targetDurationUs * 3) / 2; |
| 520 | break; |
| 521 | } |
| 522 | |
| 523 | case THIRD_UNCHANGED_RELOAD_ATTEMPT: |
| 524 | { |
| 525 | minPlaylistAgeUs = targetDurationUs * 3; |
| 526 | break; |
| 527 | } |
| 528 | |
| 529 | default: |
| 530 | TRESPASS(); |
| 531 | break; |
| 532 | } |
| 533 | |
| 534 | return mLastPlaylistFetchTimeUs + minPlaylistAgeUs <= nowUs; |
| 535 | } |
| 536 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 537 | void LiveSession::onDownloadNext() { |
| 538 | size_t bandwidthIndex = getBandwidthIndex(); |
| 539 | |
Andreas Huber | aea5aff | 2011-01-06 16:32:05 -0800 | [diff] [blame] | 540 | rinse_repeat: |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 541 | int64_t nowUs = ALooper::GetNowUs(); |
| 542 | |
| 543 | if (mLastPlaylistFetchTimeUs < 0 |
| 544 | || (ssize_t)bandwidthIndex != mPrevBandwidthIndex |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 545 | || (!mPlaylist->isComplete() && timeToRefreshPlaylist(nowUs))) { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 546 | AString url; |
| 547 | if (mBandwidthItems.size() > 0) { |
| 548 | url = mBandwidthItems.editItemAt(bandwidthIndex).mURI; |
| 549 | } else { |
| 550 | url = mMasterURL; |
| 551 | } |
| 552 | |
Andreas Huber | 8dae4ca | 2011-07-15 16:53:31 -0700 | [diff] [blame] | 553 | if ((ssize_t)bandwidthIndex != mPrevBandwidthIndex) { |
| 554 | // If we switch bandwidths, do not pay any heed to whether |
| 555 | // playlists changed since the last time... |
| 556 | mPlaylist.clear(); |
| 557 | } |
| 558 | |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 559 | bool unchanged; |
| 560 | sp<M3UParser> playlist = fetchPlaylist(url.c_str(), &unchanged); |
| 561 | if (playlist == NULL) { |
| 562 | if (unchanged) { |
| 563 | // We succeeded in fetching the playlist, but it was |
| 564 | // unchanged from the last time we tried. |
| 565 | } else { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 566 | ALOGE("failed to load playlist at url '%s'", url.c_str()); |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 567 | signalEOS(ERROR_IO); |
| 568 | |
Andreas Huber | 7e43a5a | 2011-07-15 11:30:16 -0700 | [diff] [blame] | 569 | return; |
| 570 | } |
| 571 | } else { |
| 572 | mPlaylist = playlist; |
Andreas Huber | 6e6b1ca | 2010-12-16 11:31:13 -0800 | [diff] [blame] | 573 | } |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 574 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 575 | if (!mDurationFixed) { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 576 | Mutex::Autolock autoLock(mLock); |
| 577 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 578 | if (!mPlaylist->isComplete() && !mPlaylist->isEvent()) { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 579 | mDurationUs = -1; |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 580 | mDurationFixed = true; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 581 | } else { |
Andreas Huber | 0f30bd9 | 2011-06-30 16:52:33 -0700 | [diff] [blame] | 582 | mDurationUs = 0; |
| 583 | for (size_t i = 0; i < mPlaylist->size(); ++i) { |
| 584 | sp<AMessage> itemMeta; |
| 585 | CHECK(mPlaylist->itemAt( |
| 586 | i, NULL /* uri */, &itemMeta)); |
| 587 | |
| 588 | int64_t itemDurationUs; |
| 589 | CHECK(itemMeta->findInt64("durationUs", &itemDurationUs)); |
| 590 | |
| 591 | mDurationUs += itemDurationUs; |
| 592 | } |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 593 | |
| 594 | mDurationFixed = mPlaylist->isComplete(); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 595 | } |
| 596 | } |
| 597 | |
| 598 | mLastPlaylistFetchTimeUs = ALooper::GetNowUs(); |
| 599 | } |
| 600 | |
| 601 | int32_t firstSeqNumberInPlaylist; |
| 602 | if (mPlaylist->meta() == NULL || !mPlaylist->meta()->findInt32( |
| 603 | "media-sequence", &firstSeqNumberInPlaylist)) { |
| 604 | firstSeqNumberInPlaylist = 0; |
| 605 | } |
| 606 | |
Andreas Huber | 20f725e | 2011-07-22 09:36:24 -0700 | [diff] [blame] | 607 | bool seekDiscontinuity = false; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 608 | bool explicitDiscontinuity = false; |
Andreas Huber | 22fc52f | 2011-01-05 16:24:27 -0800 | [diff] [blame] | 609 | bool bandwidthChanged = false; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 610 | |
| 611 | if (mSeekTimeUs >= 0) { |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 612 | if (mPlaylist->isComplete() || mPlaylist->isEvent()) { |
Andreas Huber | 0f30bd9 | 2011-06-30 16:52:33 -0700 | [diff] [blame] | 613 | size_t index = 0; |
| 614 | int64_t segmentStartUs = 0; |
| 615 | while (index < mPlaylist->size()) { |
| 616 | sp<AMessage> itemMeta; |
| 617 | CHECK(mPlaylist->itemAt( |
| 618 | index, NULL /* uri */, &itemMeta)); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 619 | |
Andreas Huber | 0f30bd9 | 2011-06-30 16:52:33 -0700 | [diff] [blame] | 620 | int64_t itemDurationUs; |
| 621 | CHECK(itemMeta->findInt64("durationUs", &itemDurationUs)); |
| 622 | |
| 623 | if (mSeekTimeUs < segmentStartUs + itemDurationUs) { |
| 624 | break; |
| 625 | } |
| 626 | |
| 627 | segmentStartUs += itemDurationUs; |
| 628 | ++index; |
| 629 | } |
| 630 | |
| 631 | if (index < mPlaylist->size()) { |
Andreas Huber | 43c3e6c | 2011-01-05 12:17:08 -0800 | [diff] [blame] | 632 | int32_t newSeqNumber = firstSeqNumberInPlaylist + index; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 633 | |
Andreas Huber | 43c3e6c | 2011-01-05 12:17:08 -0800 | [diff] [blame] | 634 | if (newSeqNumber != mSeqNumber) { |
Steve Block | df64d15 | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 635 | ALOGI("seeking to seq no %d", newSeqNumber); |
Andreas Huber | 43c3e6c | 2011-01-05 12:17:08 -0800 | [diff] [blame] | 636 | |
| 637 | mSeqNumber = newSeqNumber; |
| 638 | |
| 639 | mDataSource->reset(); |
| 640 | |
Andreas Huber | 22fc52f | 2011-01-05 16:24:27 -0800 | [diff] [blame] | 641 | // reseting the data source will have had the |
| 642 | // side effect of discarding any previously queued |
| 643 | // bandwidth change discontinuity. |
Andreas Huber | 20f725e | 2011-07-22 09:36:24 -0700 | [diff] [blame] | 644 | // Therefore we'll need to treat these seek |
Andreas Huber | 22fc52f | 2011-01-05 16:24:27 -0800 | [diff] [blame] | 645 | // discontinuities as involving a bandwidth change |
| 646 | // even if they aren't directly. |
Andreas Huber | 20f725e | 2011-07-22 09:36:24 -0700 | [diff] [blame] | 647 | seekDiscontinuity = true; |
Andreas Huber | 22fc52f | 2011-01-05 16:24:27 -0800 | [diff] [blame] | 648 | bandwidthChanged = true; |
Andreas Huber | 43c3e6c | 2011-01-05 12:17:08 -0800 | [diff] [blame] | 649 | } |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 650 | } |
| 651 | } |
| 652 | |
| 653 | mSeekTimeUs = -1; |
| 654 | |
| 655 | Mutex::Autolock autoLock(mLock); |
| 656 | mSeekDone = true; |
| 657 | mCondition.broadcast(); |
| 658 | } |
| 659 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 660 | const int32_t lastSeqNumberInPlaylist = |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 661 | firstSeqNumberInPlaylist + (int32_t)mPlaylist->size() - 1; |
| 662 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 663 | if (mSeqNumber < 0) { |
| 664 | if (mPlaylist->isComplete()) { |
| 665 | mSeqNumber = firstSeqNumberInPlaylist; |
| 666 | } else { |
| 667 | // If this is a live session, start 3 segments from the end. |
| 668 | mSeqNumber = lastSeqNumberInPlaylist - 3; |
| 669 | if (mSeqNumber < firstSeqNumberInPlaylist) { |
| 670 | mSeqNumber = firstSeqNumberInPlaylist; |
| 671 | } |
| 672 | } |
| 673 | } |
| 674 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 675 | if (mSeqNumber < firstSeqNumberInPlaylist |
| 676 | || mSeqNumber > lastSeqNumberInPlaylist) { |
Andreas Huber | 88b7ad4 | 2011-01-19 11:30:43 -0800 | [diff] [blame] | 677 | if (mPrevBandwidthIndex != (ssize_t)bandwidthIndex) { |
Andreas Huber | aea5aff | 2011-01-06 16:32:05 -0800 | [diff] [blame] | 678 | // Go back to the previous bandwidth. |
| 679 | |
Steve Block | df64d15 | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 680 | ALOGI("new bandwidth does not have the sequence number " |
Andreas Huber | aea5aff | 2011-01-06 16:32:05 -0800 | [diff] [blame] | 681 | "we're looking for, switching back to previous bandwidth"); |
| 682 | |
| 683 | mLastPlaylistFetchTimeUs = -1; |
| 684 | bandwidthIndex = mPrevBandwidthIndex; |
| 685 | goto rinse_repeat; |
| 686 | } |
| 687 | |
Andreas Huber | 6801b4d | 2011-08-04 12:02:47 -0700 | [diff] [blame] | 688 | if (!mPlaylist->isComplete() && mNumRetries < kMaxNumRetries) { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 689 | ++mNumRetries; |
| 690 | |
Andreas Huber | 6801b4d | 2011-08-04 12:02:47 -0700 | [diff] [blame] | 691 | if (mSeqNumber > lastSeqNumberInPlaylist) { |
| 692 | mLastPlaylistFetchTimeUs = -1; |
| 693 | postMonitorQueue(3000000ll); |
| 694 | return; |
| 695 | } |
| 696 | |
| 697 | // we've missed the boat, let's start from the lowest sequence |
| 698 | // number available and signal a discontinuity. |
| 699 | |
Steve Block | df64d15 | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 700 | ALOGI("We've missed the boat, restarting playback."); |
Andreas Huber | 6801b4d | 2011-08-04 12:02:47 -0700 | [diff] [blame] | 701 | mSeqNumber = lastSeqNumberInPlaylist; |
| 702 | explicitDiscontinuity = true; |
| 703 | |
| 704 | // fall through |
| 705 | } else { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 706 | ALOGE("Cannot find sequence number %d in playlist " |
Andreas Huber | 6801b4d | 2011-08-04 12:02:47 -0700 | [diff] [blame] | 707 | "(contains %d - %d)", |
| 708 | mSeqNumber, firstSeqNumberInPlaylist, |
| 709 | firstSeqNumberInPlaylist + mPlaylist->size() - 1); |
| 710 | |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 711 | signalEOS(ERROR_END_OF_STREAM); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 712 | return; |
| 713 | } |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | mNumRetries = 0; |
| 717 | |
| 718 | AString uri; |
| 719 | sp<AMessage> itemMeta; |
| 720 | CHECK(mPlaylist->itemAt( |
| 721 | mSeqNumber - firstSeqNumberInPlaylist, |
| 722 | &uri, |
| 723 | &itemMeta)); |
| 724 | |
| 725 | int32_t val; |
| 726 | if (itemMeta->findInt32("discontinuity", &val) && val != 0) { |
| 727 | explicitDiscontinuity = true; |
| 728 | } |
| 729 | |
Andreas Huber | 2aa4cc0 | 2011-08-08 11:20:53 -0700 | [diff] [blame] | 730 | int64_t range_offset, range_length; |
| 731 | if (!itemMeta->findInt64("range-offset", &range_offset) |
| 732 | || !itemMeta->findInt64("range-length", &range_length)) { |
| 733 | range_offset = 0; |
| 734 | range_length = -1; |
| 735 | } |
| 736 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 737 | ALOGV("fetching segment %d from (%d .. %d)", |
| 738 | mSeqNumber, firstSeqNumberInPlaylist, lastSeqNumberInPlaylist); |
| 739 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 740 | sp<ABuffer> buffer; |
Andreas Huber | 2aa4cc0 | 2011-08-08 11:20:53 -0700 | [diff] [blame] | 741 | status_t err = fetchFile(uri.c_str(), &buffer, range_offset, range_length); |
Andreas Huber | 6e6b1ca | 2010-12-16 11:31:13 -0800 | [diff] [blame] | 742 | if (err != OK) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 743 | ALOGE("failed to fetch .ts segment at url '%s'", uri.c_str()); |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 744 | signalEOS(err); |
Andreas Huber | 6e6b1ca | 2010-12-16 11:31:13 -0800 | [diff] [blame] | 745 | return; |
| 746 | } |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 747 | |
Andreas Huber | 43c3e6c | 2011-01-05 12:17:08 -0800 | [diff] [blame] | 748 | CHECK(buffer != NULL); |
| 749 | |
Andreas Huber | 88b3489 | 2011-01-19 11:24:39 -0800 | [diff] [blame] | 750 | err = decryptBuffer(mSeqNumber - firstSeqNumberInPlaylist, buffer); |
| 751 | |
| 752 | if (err != OK) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 753 | ALOGE("decryptBuffer failed w/ error %d", err); |
Andreas Huber | 88b3489 | 2011-01-19 11:24:39 -0800 | [diff] [blame] | 754 | |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 755 | signalEOS(err); |
Andreas Huber | 88b3489 | 2011-01-19 11:24:39 -0800 | [diff] [blame] | 756 | return; |
| 757 | } |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 758 | |
| 759 | if (buffer->size() == 0 || buffer->data()[0] != 0x47) { |
| 760 | // Not a transport stream??? |
| 761 | |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 762 | ALOGE("This doesn't look like a transport stream..."); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 763 | |
Andreas Huber | bc7f5b2 | 2011-01-21 10:15:23 -0800 | [diff] [blame] | 764 | mBandwidthItems.removeAt(bandwidthIndex); |
| 765 | |
| 766 | if (mBandwidthItems.isEmpty()) { |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 767 | signalEOS(ERROR_UNSUPPORTED); |
Andreas Huber | bc7f5b2 | 2011-01-21 10:15:23 -0800 | [diff] [blame] | 768 | return; |
| 769 | } |
| 770 | |
Steve Block | df64d15 | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 771 | ALOGI("Retrying with a different bandwidth stream."); |
Andreas Huber | bc7f5b2 | 2011-01-21 10:15:23 -0800 | [diff] [blame] | 772 | |
| 773 | mLastPlaylistFetchTimeUs = -1; |
| 774 | bandwidthIndex = getBandwidthIndex(); |
| 775 | mPrevBandwidthIndex = bandwidthIndex; |
| 776 | mSeqNumber = -1; |
| 777 | |
| 778 | goto rinse_repeat; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 779 | } |
| 780 | |
Andreas Huber | 22fc52f | 2011-01-05 16:24:27 -0800 | [diff] [blame] | 781 | if ((size_t)mPrevBandwidthIndex != bandwidthIndex) { |
| 782 | bandwidthChanged = true; |
| 783 | } |
| 784 | |
| 785 | if (mPrevBandwidthIndex < 0) { |
| 786 | // Don't signal a bandwidth change at the very beginning of |
| 787 | // playback. |
| 788 | bandwidthChanged = false; |
| 789 | } |
Andreas Huber | 3831a06 | 2010-12-21 10:22:33 -0800 | [diff] [blame] | 790 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 791 | if (mStartOfPlayback) { |
| 792 | seekDiscontinuity = true; |
| 793 | mStartOfPlayback = false; |
| 794 | } |
| 795 | |
Andreas Huber | 20f725e | 2011-07-22 09:36:24 -0700 | [diff] [blame] | 796 | if (seekDiscontinuity || explicitDiscontinuity || bandwidthChanged) { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 797 | // Signal discontinuity. |
| 798 | |
Steve Block | df64d15 | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 799 | ALOGI("queueing discontinuity (seek=%d, explicit=%d, bandwidthChanged=%d)", |
Andreas Huber | 20f725e | 2011-07-22 09:36:24 -0700 | [diff] [blame] | 800 | seekDiscontinuity, explicitDiscontinuity, bandwidthChanged); |
Andreas Huber | 43c3e6c | 2011-01-05 12:17:08 -0800 | [diff] [blame] | 801 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 802 | sp<ABuffer> tmp = new ABuffer(188); |
| 803 | memset(tmp->data(), 0, tmp->size()); |
Andreas Huber | 20f725e | 2011-07-22 09:36:24 -0700 | [diff] [blame] | 804 | |
| 805 | // signal a 'hard' discontinuity for explicit or bandwidthChanged. |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 806 | uint8_t type = (explicitDiscontinuity || bandwidthChanged) ? 1 : 0; |
| 807 | |
| 808 | if (mPlaylist->isComplete() || mPlaylist->isEvent()) { |
| 809 | // If this was a live event this made no sense since |
| 810 | // we don't have access to all the segment before the current |
| 811 | // one. |
| 812 | int64_t segmentStartTimeUs = getSegmentStartTimeUs(mSeqNumber); |
| 813 | memcpy(tmp->data() + 2, &segmentStartTimeUs, sizeof(segmentStartTimeUs)); |
| 814 | |
| 815 | type |= 2; |
| 816 | } |
| 817 | |
| 818 | tmp->data()[1] = type; |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 819 | |
| 820 | mDataSource->queueBuffer(tmp); |
| 821 | } |
| 822 | |
| 823 | mDataSource->queueBuffer(buffer); |
| 824 | |
| 825 | mPrevBandwidthIndex = bandwidthIndex; |
| 826 | ++mSeqNumber; |
| 827 | |
| 828 | postMonitorQueue(); |
| 829 | } |
| 830 | |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 831 | void LiveSession::signalEOS(status_t err) { |
| 832 | if (mInPreparationPhase && mNotify != NULL) { |
| 833 | sp<AMessage> notify = mNotify->dup(); |
| 834 | |
| 835 | notify->setInt32( |
| 836 | "what", |
| 837 | err == ERROR_END_OF_STREAM |
| 838 | ? kWhatPrepared : kWhatPreparationFailed); |
| 839 | |
| 840 | if (err != ERROR_END_OF_STREAM) { |
| 841 | notify->setInt32("err", err); |
| 842 | } |
| 843 | |
| 844 | notify->post(); |
| 845 | |
| 846 | mInPreparationPhase = false; |
| 847 | } |
| 848 | |
| 849 | mDataSource->queueEOS(err); |
| 850 | } |
| 851 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 852 | void LiveSession::onMonitorQueue() { |
| 853 | if (mSeekTimeUs >= 0 |
| 854 | || mDataSource->countQueuedBuffers() < kMaxNumQueuedFragments) { |
| 855 | onDownloadNext(); |
| 856 | } else { |
Andreas Huber | 0df36ec | 2013-02-06 10:44:39 -0800 | [diff] [blame^] | 857 | if (mInPreparationPhase) { |
| 858 | if (mNotify != NULL) { |
| 859 | sp<AMessage> notify = mNotify->dup(); |
| 860 | notify->setInt32("what", kWhatPrepared); |
| 861 | notify->post(); |
| 862 | } |
| 863 | |
| 864 | mInPreparationPhase = false; |
| 865 | } |
| 866 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 867 | postMonitorQueue(1000000ll); |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | status_t LiveSession::decryptBuffer( |
| 872 | size_t playlistIndex, const sp<ABuffer> &buffer) { |
| 873 | sp<AMessage> itemMeta; |
| 874 | bool found = false; |
| 875 | AString method; |
| 876 | |
| 877 | for (ssize_t i = playlistIndex; i >= 0; --i) { |
| 878 | AString uri; |
| 879 | CHECK(mPlaylist->itemAt(i, &uri, &itemMeta)); |
| 880 | |
| 881 | if (itemMeta->findString("cipher-method", &method)) { |
| 882 | found = true; |
| 883 | break; |
| 884 | } |
| 885 | } |
| 886 | |
| 887 | if (!found) { |
| 888 | method = "NONE"; |
| 889 | } |
| 890 | |
| 891 | if (method == "NONE") { |
| 892 | return OK; |
| 893 | } else if (!(method == "AES-128")) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 894 | ALOGE("Unsupported cipher method '%s'", method.c_str()); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 895 | return ERROR_UNSUPPORTED; |
| 896 | } |
| 897 | |
| 898 | AString keyURI; |
| 899 | if (!itemMeta->findString("cipher-uri", &keyURI)) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 900 | ALOGE("Missing key uri"); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 901 | return ERROR_MALFORMED; |
| 902 | } |
| 903 | |
| 904 | ssize_t index = mAESKeyForURI.indexOfKey(keyURI); |
| 905 | |
| 906 | sp<ABuffer> key; |
| 907 | if (index >= 0) { |
| 908 | key = mAESKeyForURI.valueAt(index); |
| 909 | } else { |
| 910 | key = new ABuffer(16); |
| 911 | |
Andreas Huber | 1156dc9 | 2011-03-08 15:59:28 -0800 | [diff] [blame] | 912 | sp<HTTPBase> keySource = |
| 913 | HTTPBase::Create( |
| 914 | (mFlags & kFlagIncognito) |
| 915 | ? HTTPBase::kFlagIncognito |
| 916 | : 0); |
| 917 | |
Andreas Huber | 9b80c2b | 2011-06-30 15:47:02 -0700 | [diff] [blame] | 918 | if (mUIDValid) { |
| 919 | keySource->setUID(mUID); |
| 920 | } |
| 921 | |
Andreas Huber | d6a46a6 | 2011-07-19 15:04:53 -0700 | [diff] [blame] | 922 | status_t err = |
| 923 | keySource->connect( |
| 924 | keyURI.c_str(), |
| 925 | mExtraHeaders.isEmpty() ? NULL : &mExtraHeaders); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 926 | |
| 927 | if (err == OK) { |
| 928 | size_t offset = 0; |
| 929 | while (offset < 16) { |
| 930 | ssize_t n = keySource->readAt( |
| 931 | offset, key->data() + offset, 16 - offset); |
| 932 | if (n <= 0) { |
| 933 | err = ERROR_IO; |
| 934 | break; |
| 935 | } |
| 936 | |
| 937 | offset += n; |
| 938 | } |
| 939 | } |
| 940 | |
| 941 | if (err != OK) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 942 | ALOGE("failed to fetch cipher key from '%s'.", keyURI.c_str()); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 943 | return ERROR_IO; |
| 944 | } |
| 945 | |
| 946 | mAESKeyForURI.add(keyURI, key); |
| 947 | } |
| 948 | |
| 949 | AES_KEY aes_key; |
| 950 | if (AES_set_decrypt_key(key->data(), 128, &aes_key) != 0) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 951 | ALOGE("failed to set AES decryption key."); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 952 | return UNKNOWN_ERROR; |
| 953 | } |
| 954 | |
| 955 | unsigned char aes_ivec[16]; |
| 956 | |
| 957 | AString iv; |
| 958 | if (itemMeta->findString("cipher-iv", &iv)) { |
| 959 | if ((!iv.startsWith("0x") && !iv.startsWith("0X")) |
| 960 | || iv.size() != 16 * 2 + 2) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 961 | ALOGE("malformed cipher IV '%s'.", iv.c_str()); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 962 | return ERROR_MALFORMED; |
| 963 | } |
| 964 | |
| 965 | memset(aes_ivec, 0, sizeof(aes_ivec)); |
| 966 | for (size_t i = 0; i < 16; ++i) { |
| 967 | char c1 = tolower(iv.c_str()[2 + 2 * i]); |
| 968 | char c2 = tolower(iv.c_str()[3 + 2 * i]); |
| 969 | if (!isxdigit(c1) || !isxdigit(c2)) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 970 | ALOGE("malformed cipher IV '%s'.", iv.c_str()); |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 971 | return ERROR_MALFORMED; |
| 972 | } |
| 973 | uint8_t nibble1 = isdigit(c1) ? c1 - '0' : c1 - 'a' + 10; |
| 974 | uint8_t nibble2 = isdigit(c2) ? c2 - '0' : c2 - 'a' + 10; |
| 975 | |
| 976 | aes_ivec[i] = nibble1 << 4 | nibble2; |
| 977 | } |
| 978 | } else { |
| 979 | memset(aes_ivec, 0, sizeof(aes_ivec)); |
| 980 | aes_ivec[15] = mSeqNumber & 0xff; |
| 981 | aes_ivec[14] = (mSeqNumber >> 8) & 0xff; |
| 982 | aes_ivec[13] = (mSeqNumber >> 16) & 0xff; |
| 983 | aes_ivec[12] = (mSeqNumber >> 24) & 0xff; |
| 984 | } |
| 985 | |
| 986 | AES_cbc_encrypt( |
| 987 | buffer->data(), buffer->data(), buffer->size(), |
| 988 | &aes_key, aes_ivec, AES_DECRYPT); |
| 989 | |
| 990 | // hexdump(buffer->data(), buffer->size()); |
| 991 | |
| 992 | size_t n = buffer->size(); |
| 993 | CHECK_GT(n, 0u); |
| 994 | |
| 995 | size_t pad = buffer->data()[n - 1]; |
| 996 | |
| 997 | CHECK_GT(pad, 0u); |
| 998 | CHECK_LE(pad, 16u); |
| 999 | CHECK_GE((size_t)n, pad); |
| 1000 | for (size_t i = 0; i < pad; ++i) { |
| 1001 | CHECK_EQ((unsigned)buffer->data()[n - 1 - i], pad); |
| 1002 | } |
| 1003 | |
| 1004 | n -= pad; |
| 1005 | |
| 1006 | buffer->setRange(buffer->offset(), n); |
| 1007 | |
| 1008 | return OK; |
| 1009 | } |
| 1010 | |
| 1011 | void LiveSession::postMonitorQueue(int64_t delayUs) { |
| 1012 | sp<AMessage> msg = new AMessage(kWhatMonitorQueue, id()); |
| 1013 | msg->setInt32("generation", ++mMonitorQueueGeneration); |
| 1014 | msg->post(delayUs); |
| 1015 | } |
| 1016 | |
| 1017 | void LiveSession::onSeek(const sp<AMessage> &msg) { |
| 1018 | int64_t timeUs; |
| 1019 | CHECK(msg->findInt64("timeUs", &timeUs)); |
| 1020 | |
| 1021 | mSeekTimeUs = timeUs; |
| 1022 | postMonitorQueue(); |
| 1023 | } |
| 1024 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 1025 | status_t LiveSession::getDuration(int64_t *durationUs) const { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 1026 | Mutex::Autolock autoLock(mLock); |
| 1027 | *durationUs = mDurationUs; |
| 1028 | |
| 1029 | return OK; |
| 1030 | } |
| 1031 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 1032 | bool LiveSession::isSeekable() const { |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 1033 | int64_t durationUs; |
| 1034 | return getDuration(&durationUs) == OK && durationUs >= 0; |
| 1035 | } |
| 1036 | |
Andreas Huber | b7c8e91 | 2012-11-27 15:02:53 -0800 | [diff] [blame] | 1037 | bool LiveSession::hasDynamicDuration() const { |
| 1038 | return !mDurationFixed; |
| 1039 | } |
| 1040 | |
Andreas Huber | a44153c | 2010-12-03 16:12:25 -0800 | [diff] [blame] | 1041 | } // namespace android |
| 1042 | |