Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [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 "ARTPWriter" |
| 19 | #include <utils/Log.h> |
| 20 | |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 21 | #include "ARTPWriter.h" |
| 22 | |
| 23 | #include <fcntl.h> |
| 24 | |
| 25 | #include <media/stagefright/foundation/ABuffer.h> |
| 26 | #include <media/stagefright/foundation/ADebug.h> |
| 27 | #include <media/stagefright/foundation/AMessage.h> |
| 28 | #include <media/stagefright/foundation/hexdump.h> |
| 29 | #include <media/stagefright/MediaBuffer.h> |
| 30 | #include <media/stagefright/MediaDefs.h> |
| 31 | #include <media/stagefright/MediaSource.h> |
| 32 | #include <media/stagefright/MetaData.h> |
| 33 | #include <utils/ByteOrder.h> |
| 34 | |
| 35 | #define PT 97 |
| 36 | #define PT_STR "97" |
| 37 | |
| 38 | namespace android { |
| 39 | |
| 40 | // static const size_t kMaxPacketSize = 65507; // maximum payload in UDP over IP |
| 41 | static const size_t kMaxPacketSize = 1500; |
| 42 | |
| 43 | static int UniformRand(int limit) { |
| 44 | return ((double)rand() * limit) / RAND_MAX; |
| 45 | } |
| 46 | |
| 47 | ARTPWriter::ARTPWriter(int fd) |
| 48 | : mFlags(0), |
James Dong | 2747e0e | 2010-11-18 20:59:13 -0800 | [diff] [blame] | 49 | mFd(dup(fd)), |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 50 | mLooper(new ALooper), |
| 51 | mReflector(new AHandlerReflector<ARTPWriter>(this)) { |
| 52 | CHECK_GE(fd, 0); |
| 53 | |
Andreas Huber | c4e0b70 | 2010-08-27 15:21:07 -0700 | [diff] [blame] | 54 | mLooper->setName("rtp writer"); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 55 | mLooper->registerHandler(mReflector); |
| 56 | mLooper->start(); |
| 57 | |
| 58 | mSocket = socket(AF_INET, SOCK_DGRAM, 0); |
| 59 | CHECK_GE(mSocket, 0); |
| 60 | |
| 61 | memset(mRTPAddr.sin_zero, 0, sizeof(mRTPAddr.sin_zero)); |
| 62 | mRTPAddr.sin_family = AF_INET; |
| 63 | |
| 64 | #if 1 |
| 65 | mRTPAddr.sin_addr.s_addr = INADDR_ANY; |
| 66 | #else |
Andreas Huber | 00237b7 | 2010-08-12 10:58:24 -0700 | [diff] [blame] | 67 | mRTPAddr.sin_addr.s_addr = inet_addr("172.19.18.246"); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 68 | #endif |
| 69 | |
| 70 | mRTPAddr.sin_port = htons(5634); |
| 71 | CHECK_EQ(0, ntohs(mRTPAddr.sin_port) & 1); |
| 72 | |
| 73 | mRTCPAddr = mRTPAddr; |
| 74 | mRTCPAddr.sin_port = htons(ntohs(mRTPAddr.sin_port) | 1); |
| 75 | |
| 76 | #if LOG_TO_FILES |
| 77 | mRTPFd = open( |
| 78 | "/data/misc/rtpout.bin", |
| 79 | O_WRONLY | O_CREAT | O_TRUNC, |
| 80 | 0644); |
| 81 | CHECK_GE(mRTPFd, 0); |
| 82 | |
| 83 | mRTCPFd = open( |
| 84 | "/data/misc/rtcpout.bin", |
| 85 | O_WRONLY | O_CREAT | O_TRUNC, |
| 86 | 0644); |
| 87 | CHECK_GE(mRTCPFd, 0); |
| 88 | #endif |
| 89 | } |
| 90 | |
| 91 | ARTPWriter::~ARTPWriter() { |
| 92 | #if LOG_TO_FILES |
| 93 | close(mRTCPFd); |
| 94 | mRTCPFd = -1; |
| 95 | |
| 96 | close(mRTPFd); |
| 97 | mRTPFd = -1; |
| 98 | #endif |
| 99 | |
| 100 | close(mSocket); |
| 101 | mSocket = -1; |
| 102 | |
| 103 | close(mFd); |
| 104 | mFd = -1; |
| 105 | } |
| 106 | |
| 107 | status_t ARTPWriter::addSource(const sp<MediaSource> &source) { |
| 108 | mSource = source; |
| 109 | return OK; |
| 110 | } |
| 111 | |
| 112 | bool ARTPWriter::reachedEOS() { |
| 113 | Mutex::Autolock autoLock(mLock); |
| 114 | return (mFlags & kFlagEOS) != 0; |
| 115 | } |
| 116 | |
| 117 | status_t ARTPWriter::start(MetaData *params) { |
| 118 | Mutex::Autolock autoLock(mLock); |
| 119 | if (mFlags & kFlagStarted) { |
| 120 | return INVALID_OPERATION; |
| 121 | } |
| 122 | |
| 123 | mFlags &= ~kFlagEOS; |
| 124 | mSourceID = rand(); |
| 125 | mSeqNo = UniformRand(65536); |
| 126 | mRTPTimeBase = rand(); |
| 127 | mNumRTPSent = 0; |
| 128 | mNumRTPOctetsSent = 0; |
| 129 | mLastRTPTime = 0; |
| 130 | mLastNTPTime = 0; |
| 131 | mNumSRsSent = 0; |
| 132 | |
| 133 | const char *mime; |
| 134 | CHECK(mSource->getFormat()->findCString(kKeyMIMEType, &mime)); |
| 135 | |
| 136 | mMode = INVALID; |
| 137 | if (!strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_AVC)) { |
| 138 | mMode = H264; |
| 139 | } else if (!strcasecmp(mime, MEDIA_MIMETYPE_VIDEO_H263)) { |
| 140 | mMode = H263; |
| 141 | } else if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AMR_NB)) { |
| 142 | mMode = AMR_NB; |
| 143 | } else if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AMR_WB)) { |
| 144 | mMode = AMR_WB; |
| 145 | } else { |
| 146 | TRESPASS(); |
| 147 | } |
| 148 | |
| 149 | (new AMessage(kWhatStart, mReflector->id()))->post(); |
| 150 | |
| 151 | while (!(mFlags & kFlagStarted)) { |
| 152 | mCondition.wait(mLock); |
| 153 | } |
| 154 | |
| 155 | return OK; |
| 156 | } |
| 157 | |
James Dong | d036662 | 2010-08-18 19:10:39 -0700 | [diff] [blame] | 158 | status_t ARTPWriter::stop() { |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 159 | Mutex::Autolock autoLock(mLock); |
| 160 | if (!(mFlags & kFlagStarted)) { |
James Dong | d036662 | 2010-08-18 19:10:39 -0700 | [diff] [blame] | 161 | return OK; |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | (new AMessage(kWhatStop, mReflector->id()))->post(); |
| 165 | |
| 166 | while (mFlags & kFlagStarted) { |
| 167 | mCondition.wait(mLock); |
| 168 | } |
James Dong | d036662 | 2010-08-18 19:10:39 -0700 | [diff] [blame] | 169 | return OK; |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 170 | } |
| 171 | |
James Dong | d036662 | 2010-08-18 19:10:39 -0700 | [diff] [blame] | 172 | status_t ARTPWriter::pause() { |
| 173 | return OK; |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | static void StripStartcode(MediaBuffer *buffer) { |
| 177 | if (buffer->range_length() < 4) { |
| 178 | return; |
| 179 | } |
| 180 | |
| 181 | const uint8_t *ptr = |
| 182 | (const uint8_t *)buffer->data() + buffer->range_offset(); |
| 183 | |
| 184 | if (!memcmp(ptr, "\x00\x00\x00\x01", 4)) { |
| 185 | buffer->set_range( |
| 186 | buffer->range_offset() + 4, buffer->range_length() - 4); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | void ARTPWriter::onMessageReceived(const sp<AMessage> &msg) { |
| 191 | switch (msg->what()) { |
| 192 | case kWhatStart: |
| 193 | { |
| 194 | CHECK_EQ(mSource->start(), (status_t)OK); |
| 195 | |
| 196 | #if 0 |
| 197 | if (mMode == H264) { |
| 198 | MediaBuffer *buffer; |
| 199 | CHECK_EQ(mSource->read(&buffer), (status_t)OK); |
| 200 | |
| 201 | StripStartcode(buffer); |
| 202 | makeH264SPropParamSets(buffer); |
| 203 | buffer->release(); |
| 204 | buffer = NULL; |
| 205 | } |
| 206 | |
| 207 | dumpSessionDesc(); |
| 208 | #endif |
| 209 | |
| 210 | { |
| 211 | Mutex::Autolock autoLock(mLock); |
| 212 | mFlags |= kFlagStarted; |
| 213 | mCondition.signal(); |
| 214 | } |
| 215 | |
| 216 | (new AMessage(kWhatRead, mReflector->id()))->post(); |
| 217 | (new AMessage(kWhatSendSR, mReflector->id()))->post(); |
| 218 | break; |
| 219 | } |
| 220 | |
| 221 | case kWhatStop: |
| 222 | { |
| 223 | CHECK_EQ(mSource->stop(), (status_t)OK); |
| 224 | |
| 225 | sendBye(); |
| 226 | |
| 227 | { |
| 228 | Mutex::Autolock autoLock(mLock); |
| 229 | mFlags &= ~kFlagStarted; |
| 230 | mCondition.signal(); |
| 231 | } |
| 232 | break; |
| 233 | } |
| 234 | |
| 235 | case kWhatRead: |
| 236 | { |
| 237 | { |
| 238 | Mutex::Autolock autoLock(mLock); |
| 239 | if (!(mFlags & kFlagStarted)) { |
| 240 | break; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | onRead(msg); |
| 245 | break; |
| 246 | } |
| 247 | |
| 248 | case kWhatSendSR: |
| 249 | { |
| 250 | { |
| 251 | Mutex::Autolock autoLock(mLock); |
| 252 | if (!(mFlags & kFlagStarted)) { |
| 253 | break; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | onSendSR(msg); |
| 258 | break; |
| 259 | } |
| 260 | |
| 261 | default: |
| 262 | TRESPASS(); |
| 263 | break; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | void ARTPWriter::onRead(const sp<AMessage> &msg) { |
| 268 | MediaBuffer *mediaBuf; |
| 269 | status_t err = mSource->read(&mediaBuf); |
| 270 | |
| 271 | if (err != OK) { |
Steve Block | 6215d3f | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 272 | ALOGI("reached EOS."); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 273 | |
| 274 | Mutex::Autolock autoLock(mLock); |
| 275 | mFlags |= kFlagEOS; |
| 276 | return; |
| 277 | } |
| 278 | |
| 279 | if (mediaBuf->range_length() > 0) { |
Steve Block | 71f2cf1 | 2011-10-20 11:56:00 +0100 | [diff] [blame] | 280 | ALOGV("read buffer of size %d", mediaBuf->range_length()); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 281 | |
| 282 | if (mMode == H264) { |
| 283 | StripStartcode(mediaBuf); |
| 284 | sendAVCData(mediaBuf); |
| 285 | } else if (mMode == H263) { |
| 286 | sendH263Data(mediaBuf); |
| 287 | } else if (mMode == AMR_NB || mMode == AMR_WB) { |
| 288 | sendAMRData(mediaBuf); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | mediaBuf->release(); |
| 293 | mediaBuf = NULL; |
| 294 | |
| 295 | msg->post(); |
| 296 | } |
| 297 | |
| 298 | void ARTPWriter::onSendSR(const sp<AMessage> &msg) { |
| 299 | sp<ABuffer> buffer = new ABuffer(65536); |
| 300 | buffer->setRange(0, 0); |
| 301 | |
| 302 | addSR(buffer); |
| 303 | addSDES(buffer); |
| 304 | |
| 305 | send(buffer, true /* isRTCP */); |
| 306 | |
| 307 | ++mNumSRsSent; |
| 308 | msg->post(3000000); |
| 309 | } |
| 310 | |
| 311 | void ARTPWriter::send(const sp<ABuffer> &buffer, bool isRTCP) { |
| 312 | ssize_t n = sendto( |
| 313 | mSocket, buffer->data(), buffer->size(), 0, |
| 314 | (const struct sockaddr *)(isRTCP ? &mRTCPAddr : &mRTPAddr), |
| 315 | sizeof(mRTCPAddr)); |
| 316 | |
| 317 | CHECK_EQ(n, (ssize_t)buffer->size()); |
| 318 | |
| 319 | #if LOG_TO_FILES |
| 320 | int fd = isRTCP ? mRTCPFd : mRTPFd; |
| 321 | |
| 322 | uint32_t ms = tolel(ALooper::GetNowUs() / 1000ll); |
| 323 | uint32_t length = tolel(buffer->size()); |
| 324 | write(fd, &ms, sizeof(ms)); |
| 325 | write(fd, &length, sizeof(length)); |
| 326 | write(fd, buffer->data(), buffer->size()); |
| 327 | #endif |
| 328 | } |
| 329 | |
| 330 | void ARTPWriter::addSR(const sp<ABuffer> &buffer) { |
| 331 | uint8_t *data = buffer->data() + buffer->size(); |
| 332 | |
| 333 | data[0] = 0x80 | 0; |
| 334 | data[1] = 200; // SR |
| 335 | data[2] = 0; |
| 336 | data[3] = 6; |
| 337 | data[4] = mSourceID >> 24; |
| 338 | data[5] = (mSourceID >> 16) & 0xff; |
| 339 | data[6] = (mSourceID >> 8) & 0xff; |
| 340 | data[7] = mSourceID & 0xff; |
| 341 | |
| 342 | data[8] = mLastNTPTime >> (64 - 8); |
| 343 | data[9] = (mLastNTPTime >> (64 - 16)) & 0xff; |
| 344 | data[10] = (mLastNTPTime >> (64 - 24)) & 0xff; |
| 345 | data[11] = (mLastNTPTime >> 32) & 0xff; |
| 346 | data[12] = (mLastNTPTime >> 24) & 0xff; |
| 347 | data[13] = (mLastNTPTime >> 16) & 0xff; |
| 348 | data[14] = (mLastNTPTime >> 8) & 0xff; |
| 349 | data[15] = mLastNTPTime & 0xff; |
| 350 | |
| 351 | data[16] = (mLastRTPTime >> 24) & 0xff; |
| 352 | data[17] = (mLastRTPTime >> 16) & 0xff; |
| 353 | data[18] = (mLastRTPTime >> 8) & 0xff; |
| 354 | data[19] = mLastRTPTime & 0xff; |
| 355 | |
| 356 | data[20] = mNumRTPSent >> 24; |
| 357 | data[21] = (mNumRTPSent >> 16) & 0xff; |
| 358 | data[22] = (mNumRTPSent >> 8) & 0xff; |
| 359 | data[23] = mNumRTPSent & 0xff; |
| 360 | |
| 361 | data[24] = mNumRTPOctetsSent >> 24; |
| 362 | data[25] = (mNumRTPOctetsSent >> 16) & 0xff; |
| 363 | data[26] = (mNumRTPOctetsSent >> 8) & 0xff; |
| 364 | data[27] = mNumRTPOctetsSent & 0xff; |
| 365 | |
| 366 | buffer->setRange(buffer->offset(), buffer->size() + 28); |
| 367 | } |
| 368 | |
| 369 | void ARTPWriter::addSDES(const sp<ABuffer> &buffer) { |
| 370 | uint8_t *data = buffer->data() + buffer->size(); |
| 371 | data[0] = 0x80 | 1; |
| 372 | data[1] = 202; // SDES |
| 373 | data[4] = mSourceID >> 24; |
| 374 | data[5] = (mSourceID >> 16) & 0xff; |
| 375 | data[6] = (mSourceID >> 8) & 0xff; |
| 376 | data[7] = mSourceID & 0xff; |
| 377 | |
| 378 | size_t offset = 8; |
| 379 | |
| 380 | data[offset++] = 1; // CNAME |
| 381 | |
| 382 | static const char *kCNAME = "someone@somewhere"; |
| 383 | data[offset++] = strlen(kCNAME); |
| 384 | |
| 385 | memcpy(&data[offset], kCNAME, strlen(kCNAME)); |
| 386 | offset += strlen(kCNAME); |
| 387 | |
| 388 | data[offset++] = 7; // NOTE |
| 389 | |
| 390 | static const char *kNOTE = "Hell's frozen over."; |
| 391 | data[offset++] = strlen(kNOTE); |
| 392 | |
| 393 | memcpy(&data[offset], kNOTE, strlen(kNOTE)); |
| 394 | offset += strlen(kNOTE); |
| 395 | |
| 396 | data[offset++] = 0; |
| 397 | |
| 398 | if ((offset % 4) > 0) { |
| 399 | size_t count = 4 - (offset % 4); |
| 400 | switch (count) { |
| 401 | case 3: |
| 402 | data[offset++] = 0; |
| 403 | case 2: |
| 404 | data[offset++] = 0; |
| 405 | case 1: |
| 406 | data[offset++] = 0; |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | size_t numWords = (offset / 4) - 1; |
| 411 | data[2] = numWords >> 8; |
| 412 | data[3] = numWords & 0xff; |
| 413 | |
| 414 | buffer->setRange(buffer->offset(), buffer->size() + offset); |
| 415 | } |
| 416 | |
| 417 | // static |
| 418 | uint64_t ARTPWriter::GetNowNTP() { |
| 419 | uint64_t nowUs = ALooper::GetNowUs(); |
| 420 | |
| 421 | nowUs += ((70ll * 365 + 17) * 24) * 60 * 60 * 1000000ll; |
| 422 | |
| 423 | uint64_t hi = nowUs / 1000000ll; |
| 424 | uint64_t lo = ((1ll << 32) * (nowUs % 1000000ll)) / 1000000ll; |
| 425 | |
| 426 | return (hi << 32) | lo; |
| 427 | } |
| 428 | |
| 429 | void ARTPWriter::dumpSessionDesc() { |
| 430 | AString sdp; |
| 431 | sdp = "v=0\r\n"; |
| 432 | |
| 433 | sdp.append("o=- "); |
| 434 | |
| 435 | uint64_t ntp = GetNowNTP(); |
| 436 | sdp.append(ntp); |
| 437 | sdp.append(" "); |
| 438 | sdp.append(ntp); |
| 439 | sdp.append(" IN IP4 127.0.0.0\r\n"); |
| 440 | |
| 441 | sdp.append( |
| 442 | "s=Sample\r\n" |
| 443 | "i=Playing around\r\n" |
| 444 | "c=IN IP4 "); |
| 445 | |
| 446 | struct in_addr addr; |
| 447 | addr.s_addr = ntohl(INADDR_LOOPBACK); |
| 448 | |
| 449 | sdp.append(inet_ntoa(addr)); |
| 450 | |
| 451 | sdp.append( |
| 452 | "\r\n" |
| 453 | "t=0 0\r\n" |
| 454 | "a=range:npt=now-\r\n"); |
| 455 | |
| 456 | sp<MetaData> meta = mSource->getFormat(); |
| 457 | |
| 458 | if (mMode == H264 || mMode == H263) { |
| 459 | sdp.append("m=video "); |
| 460 | } else { |
| 461 | sdp.append("m=audio "); |
| 462 | } |
| 463 | |
| 464 | sdp.append(StringPrintf("%d", ntohs(mRTPAddr.sin_port))); |
| 465 | sdp.append( |
| 466 | " RTP/AVP " PT_STR "\r\n" |
| 467 | "b=AS 320000\r\n" |
| 468 | "a=rtpmap:" PT_STR " "); |
| 469 | |
| 470 | if (mMode == H264) { |
| 471 | sdp.append("H264/90000"); |
| 472 | } else if (mMode == H263) { |
| 473 | sdp.append("H263-1998/90000"); |
| 474 | } else if (mMode == AMR_NB || mMode == AMR_WB) { |
| 475 | int32_t sampleRate, numChannels; |
| 476 | CHECK(mSource->getFormat()->findInt32(kKeySampleRate, &sampleRate)); |
| 477 | CHECK(mSource->getFormat()->findInt32(kKeyChannelCount, &numChannels)); |
| 478 | |
| 479 | CHECK_EQ(numChannels, 1); |
| 480 | CHECK_EQ(sampleRate, (mMode == AMR_NB) ? 8000 : 16000); |
| 481 | |
| 482 | sdp.append(mMode == AMR_NB ? "AMR" : "AMR-WB"); |
| 483 | sdp.append(StringPrintf("/%d/%d", sampleRate, numChannels)); |
| 484 | } else { |
| 485 | TRESPASS(); |
| 486 | } |
| 487 | |
| 488 | sdp.append("\r\n"); |
| 489 | |
| 490 | if (mMode == H264 || mMode == H263) { |
| 491 | int32_t width, height; |
| 492 | CHECK(meta->findInt32(kKeyWidth, &width)); |
| 493 | CHECK(meta->findInt32(kKeyHeight, &height)); |
| 494 | |
| 495 | sdp.append("a=cliprect 0,0,"); |
| 496 | sdp.append(height); |
| 497 | sdp.append(","); |
| 498 | sdp.append(width); |
| 499 | sdp.append("\r\n"); |
| 500 | |
| 501 | sdp.append( |
| 502 | "a=framesize:" PT_STR " "); |
| 503 | sdp.append(width); |
| 504 | sdp.append("-"); |
| 505 | sdp.append(height); |
| 506 | sdp.append("\r\n"); |
| 507 | } |
| 508 | |
| 509 | if (mMode == H264) { |
| 510 | sdp.append( |
| 511 | "a=fmtp:" PT_STR " profile-level-id="); |
| 512 | sdp.append(mProfileLevel); |
| 513 | sdp.append(";sprop-parameter-sets="); |
| 514 | |
| 515 | sdp.append(mSeqParamSet); |
| 516 | sdp.append(","); |
| 517 | sdp.append(mPicParamSet); |
| 518 | sdp.append(";packetization-mode=1\r\n"); |
| 519 | } else if (mMode == AMR_NB || mMode == AMR_WB) { |
| 520 | sdp.append("a=fmtp:" PT_STR " octed-align\r\n"); |
| 521 | } |
| 522 | |
Steve Block | 6215d3f | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 523 | ALOGI("%s", sdp.c_str()); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | void ARTPWriter::makeH264SPropParamSets(MediaBuffer *buffer) { |
| 527 | static const char kStartCode[] = "\x00\x00\x00\x01"; |
| 528 | |
| 529 | const uint8_t *data = |
| 530 | (const uint8_t *)buffer->data() + buffer->range_offset(); |
| 531 | size_t size = buffer->range_length(); |
| 532 | |
| 533 | CHECK_GE(size, 0u); |
| 534 | |
| 535 | size_t startCodePos = 0; |
| 536 | while (startCodePos + 3 < size |
| 537 | && memcmp(kStartCode, &data[startCodePos], 4)) { |
| 538 | ++startCodePos; |
| 539 | } |
| 540 | |
| 541 | CHECK_LT(startCodePos + 3, size); |
| 542 | |
| 543 | CHECK_EQ((unsigned)data[0], 0x67u); |
| 544 | |
| 545 | mProfileLevel = |
| 546 | StringPrintf("%02X%02X%02X", data[1], data[2], data[3]); |
| 547 | |
| 548 | encodeBase64(data, startCodePos, &mSeqParamSet); |
| 549 | |
| 550 | encodeBase64(&data[startCodePos + 4], size - startCodePos - 4, |
| 551 | &mPicParamSet); |
| 552 | } |
| 553 | |
| 554 | void ARTPWriter::sendBye() { |
| 555 | sp<ABuffer> buffer = new ABuffer(8); |
| 556 | uint8_t *data = buffer->data(); |
| 557 | *data++ = (2 << 6) | 1; |
| 558 | *data++ = 203; |
| 559 | *data++ = 0; |
| 560 | *data++ = 1; |
| 561 | *data++ = mSourceID >> 24; |
| 562 | *data++ = (mSourceID >> 16) & 0xff; |
| 563 | *data++ = (mSourceID >> 8) & 0xff; |
| 564 | *data++ = mSourceID & 0xff; |
| 565 | buffer->setRange(0, 8); |
| 566 | |
| 567 | send(buffer, true /* isRTCP */); |
| 568 | } |
| 569 | |
| 570 | void ARTPWriter::sendAVCData(MediaBuffer *mediaBuf) { |
| 571 | // 12 bytes RTP header + 2 bytes for the FU-indicator and FU-header. |
| 572 | CHECK_GE(kMaxPacketSize, 12u + 2u); |
| 573 | |
| 574 | int64_t timeUs; |
| 575 | CHECK(mediaBuf->meta_data()->findInt64(kKeyTime, &timeUs)); |
| 576 | |
| 577 | uint32_t rtpTime = mRTPTimeBase + (timeUs * 9 / 100ll); |
| 578 | |
| 579 | const uint8_t *mediaData = |
| 580 | (const uint8_t *)mediaBuf->data() + mediaBuf->range_offset(); |
| 581 | |
| 582 | sp<ABuffer> buffer = new ABuffer(kMaxPacketSize); |
| 583 | if (mediaBuf->range_length() + 12 <= buffer->capacity()) { |
| 584 | // The data fits into a single packet |
| 585 | uint8_t *data = buffer->data(); |
| 586 | data[0] = 0x80; |
| 587 | data[1] = (1 << 7) | PT; // M-bit |
| 588 | data[2] = (mSeqNo >> 8) & 0xff; |
| 589 | data[3] = mSeqNo & 0xff; |
| 590 | data[4] = rtpTime >> 24; |
| 591 | data[5] = (rtpTime >> 16) & 0xff; |
| 592 | data[6] = (rtpTime >> 8) & 0xff; |
| 593 | data[7] = rtpTime & 0xff; |
| 594 | data[8] = mSourceID >> 24; |
| 595 | data[9] = (mSourceID >> 16) & 0xff; |
| 596 | data[10] = (mSourceID >> 8) & 0xff; |
| 597 | data[11] = mSourceID & 0xff; |
| 598 | |
| 599 | memcpy(&data[12], |
| 600 | mediaData, mediaBuf->range_length()); |
| 601 | |
| 602 | buffer->setRange(0, mediaBuf->range_length() + 12); |
| 603 | |
| 604 | send(buffer, false /* isRTCP */); |
| 605 | |
| 606 | ++mSeqNo; |
| 607 | ++mNumRTPSent; |
| 608 | mNumRTPOctetsSent += buffer->size() - 12; |
| 609 | } else { |
| 610 | // FU-A |
| 611 | |
| 612 | unsigned nalType = mediaData[0]; |
| 613 | size_t offset = 1; |
| 614 | |
| 615 | bool firstPacket = true; |
| 616 | while (offset < mediaBuf->range_length()) { |
| 617 | size_t size = mediaBuf->range_length() - offset; |
| 618 | bool lastPacket = true; |
| 619 | if (size + 12 + 2 > buffer->capacity()) { |
| 620 | lastPacket = false; |
| 621 | size = buffer->capacity() - 12 - 2; |
| 622 | } |
| 623 | |
| 624 | uint8_t *data = buffer->data(); |
| 625 | data[0] = 0x80; |
| 626 | data[1] = (lastPacket ? (1 << 7) : 0x00) | PT; // M-bit |
| 627 | data[2] = (mSeqNo >> 8) & 0xff; |
| 628 | data[3] = mSeqNo & 0xff; |
| 629 | data[4] = rtpTime >> 24; |
| 630 | data[5] = (rtpTime >> 16) & 0xff; |
| 631 | data[6] = (rtpTime >> 8) & 0xff; |
| 632 | data[7] = rtpTime & 0xff; |
| 633 | data[8] = mSourceID >> 24; |
| 634 | data[9] = (mSourceID >> 16) & 0xff; |
| 635 | data[10] = (mSourceID >> 8) & 0xff; |
| 636 | data[11] = mSourceID & 0xff; |
| 637 | |
| 638 | data[12] = 28 | (nalType & 0xe0); |
| 639 | |
| 640 | CHECK(!firstPacket || !lastPacket); |
| 641 | |
| 642 | data[13] = |
| 643 | (firstPacket ? 0x80 : 0x00) |
| 644 | | (lastPacket ? 0x40 : 0x00) |
| 645 | | (nalType & 0x1f); |
| 646 | |
| 647 | memcpy(&data[14], &mediaData[offset], size); |
| 648 | |
| 649 | buffer->setRange(0, 14 + size); |
| 650 | |
| 651 | send(buffer, false /* isRTCP */); |
| 652 | |
| 653 | ++mSeqNo; |
| 654 | ++mNumRTPSent; |
| 655 | mNumRTPOctetsSent += buffer->size() - 12; |
| 656 | |
| 657 | firstPacket = false; |
| 658 | offset += size; |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | mLastRTPTime = rtpTime; |
| 663 | mLastNTPTime = GetNowNTP(); |
| 664 | } |
| 665 | |
| 666 | void ARTPWriter::sendH263Data(MediaBuffer *mediaBuf) { |
| 667 | CHECK_GE(kMaxPacketSize, 12u + 2u); |
| 668 | |
| 669 | int64_t timeUs; |
| 670 | CHECK(mediaBuf->meta_data()->findInt64(kKeyTime, &timeUs)); |
| 671 | |
| 672 | uint32_t rtpTime = mRTPTimeBase + (timeUs * 9 / 100ll); |
| 673 | |
| 674 | const uint8_t *mediaData = |
| 675 | (const uint8_t *)mediaBuf->data() + mediaBuf->range_offset(); |
| 676 | |
| 677 | // hexdump(mediaData, mediaBuf->range_length()); |
| 678 | |
| 679 | CHECK_EQ((unsigned)mediaData[0], 0u); |
| 680 | CHECK_EQ((unsigned)mediaData[1], 0u); |
| 681 | |
| 682 | size_t offset = 2; |
| 683 | size_t size = mediaBuf->range_length(); |
| 684 | |
| 685 | while (offset < size) { |
| 686 | sp<ABuffer> buffer = new ABuffer(kMaxPacketSize); |
| 687 | // CHECK_LE(mediaBuf->range_length() -2 + 14, buffer->capacity()); |
| 688 | |
| 689 | size_t remaining = size - offset; |
| 690 | bool lastPacket = (remaining + 14 <= buffer->capacity()); |
| 691 | if (!lastPacket) { |
| 692 | remaining = buffer->capacity() - 14; |
| 693 | } |
| 694 | |
| 695 | uint8_t *data = buffer->data(); |
| 696 | data[0] = 0x80; |
| 697 | data[1] = (lastPacket ? 0x80 : 0x00) | PT; // M-bit |
| 698 | data[2] = (mSeqNo >> 8) & 0xff; |
| 699 | data[3] = mSeqNo & 0xff; |
| 700 | data[4] = rtpTime >> 24; |
| 701 | data[5] = (rtpTime >> 16) & 0xff; |
| 702 | data[6] = (rtpTime >> 8) & 0xff; |
| 703 | data[7] = rtpTime & 0xff; |
| 704 | data[8] = mSourceID >> 24; |
| 705 | data[9] = (mSourceID >> 16) & 0xff; |
| 706 | data[10] = (mSourceID >> 8) & 0xff; |
| 707 | data[11] = mSourceID & 0xff; |
| 708 | |
| 709 | data[12] = (offset == 2) ? 0x04 : 0x00; // P=?, V=0 |
| 710 | data[13] = 0x00; // PLEN = PEBIT = 0 |
| 711 | |
| 712 | memcpy(&data[14], &mediaData[offset], remaining); |
| 713 | offset += remaining; |
| 714 | |
| 715 | buffer->setRange(0, remaining + 14); |
| 716 | |
| 717 | send(buffer, false /* isRTCP */); |
| 718 | |
| 719 | ++mSeqNo; |
| 720 | ++mNumRTPSent; |
| 721 | mNumRTPOctetsSent += buffer->size() - 12; |
| 722 | } |
| 723 | |
| 724 | mLastRTPTime = rtpTime; |
| 725 | mLastNTPTime = GetNowNTP(); |
| 726 | } |
| 727 | |
| 728 | static size_t getFrameSize(bool isWide, unsigned FT) { |
| 729 | static const size_t kFrameSizeNB[8] = { |
| 730 | 95, 103, 118, 134, 148, 159, 204, 244 |
| 731 | }; |
| 732 | static const size_t kFrameSizeWB[9] = { |
| 733 | 132, 177, 253, 285, 317, 365, 397, 461, 477 |
| 734 | }; |
| 735 | |
| 736 | size_t frameSize = isWide ? kFrameSizeWB[FT] : kFrameSizeNB[FT]; |
| 737 | |
| 738 | // Round up bits to bytes and add 1 for the header byte. |
| 739 | frameSize = (frameSize + 7) / 8 + 1; |
| 740 | |
| 741 | return frameSize; |
| 742 | } |
| 743 | |
| 744 | void ARTPWriter::sendAMRData(MediaBuffer *mediaBuf) { |
| 745 | const uint8_t *mediaData = |
| 746 | (const uint8_t *)mediaBuf->data() + mediaBuf->range_offset(); |
| 747 | |
| 748 | size_t mediaLength = mediaBuf->range_length(); |
| 749 | |
| 750 | CHECK_GE(kMaxPacketSize, 12u + 1u + mediaLength); |
| 751 | |
| 752 | const bool isWide = (mMode == AMR_WB); |
| 753 | |
| 754 | int64_t timeUs; |
| 755 | CHECK(mediaBuf->meta_data()->findInt64(kKeyTime, &timeUs)); |
| 756 | uint32_t rtpTime = mRTPTimeBase + (timeUs / (isWide ? 250 : 125)); |
| 757 | |
| 758 | // hexdump(mediaData, mediaLength); |
| 759 | |
| 760 | Vector<uint8_t> tableOfContents; |
| 761 | size_t srcOffset = 0; |
| 762 | while (srcOffset < mediaLength) { |
| 763 | uint8_t toc = mediaData[srcOffset]; |
| 764 | |
| 765 | unsigned FT = (toc >> 3) & 0x0f; |
| 766 | CHECK((isWide && FT <= 8) || (!isWide && FT <= 7)); |
| 767 | |
| 768 | tableOfContents.push(toc); |
| 769 | srcOffset += getFrameSize(isWide, FT); |
| 770 | } |
| 771 | CHECK_EQ(srcOffset, mediaLength); |
| 772 | |
| 773 | sp<ABuffer> buffer = new ABuffer(kMaxPacketSize); |
| 774 | CHECK_LE(mediaLength + 12 + 1, buffer->capacity()); |
| 775 | |
| 776 | // The data fits into a single packet |
| 777 | uint8_t *data = buffer->data(); |
| 778 | data[0] = 0x80; |
| 779 | data[1] = PT; |
| 780 | if (mNumRTPSent == 0) { |
| 781 | // Signal start of talk-spurt. |
| 782 | data[1] |= 0x80; // M-bit |
| 783 | } |
| 784 | data[2] = (mSeqNo >> 8) & 0xff; |
| 785 | data[3] = mSeqNo & 0xff; |
| 786 | data[4] = rtpTime >> 24; |
| 787 | data[5] = (rtpTime >> 16) & 0xff; |
| 788 | data[6] = (rtpTime >> 8) & 0xff; |
| 789 | data[7] = rtpTime & 0xff; |
| 790 | data[8] = mSourceID >> 24; |
| 791 | data[9] = (mSourceID >> 16) & 0xff; |
| 792 | data[10] = (mSourceID >> 8) & 0xff; |
| 793 | data[11] = mSourceID & 0xff; |
| 794 | |
| 795 | data[12] = 0xf0; // CMR=15, RR=0 |
| 796 | |
| 797 | size_t dstOffset = 13; |
| 798 | |
| 799 | for (size_t i = 0; i < tableOfContents.size(); ++i) { |
| 800 | uint8_t toc = tableOfContents[i]; |
| 801 | |
| 802 | if (i + 1 < tableOfContents.size()) { |
| 803 | toc |= 0x80; |
| 804 | } else { |
| 805 | toc &= ~0x80; |
| 806 | } |
| 807 | |
| 808 | data[dstOffset++] = toc; |
| 809 | } |
| 810 | |
| 811 | srcOffset = 0; |
| 812 | for (size_t i = 0; i < tableOfContents.size(); ++i) { |
| 813 | uint8_t toc = tableOfContents[i]; |
| 814 | unsigned FT = (toc >> 3) & 0x0f; |
| 815 | size_t frameSize = getFrameSize(isWide, FT); |
| 816 | |
| 817 | ++srcOffset; // skip toc |
| 818 | memcpy(&data[dstOffset], &mediaData[srcOffset], frameSize - 1); |
| 819 | srcOffset += frameSize - 1; |
| 820 | dstOffset += frameSize - 1; |
| 821 | } |
| 822 | |
| 823 | buffer->setRange(0, dstOffset); |
| 824 | |
| 825 | send(buffer, false /* isRTCP */); |
| 826 | |
| 827 | ++mSeqNo; |
| 828 | ++mNumRTPSent; |
| 829 | mNumRTPOctetsSent += buffer->size() - 12; |
| 830 | |
| 831 | mLastRTPTime = rtpTime; |
| 832 | mLastNTPTime = GetNowNTP(); |
| 833 | } |
| 834 | |
| 835 | } // namespace android |
| 836 | |