HTTPLiveSource.cpp revision 84333e0475bc911adc16417f4ca327c975cf6c36
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 "HTTPLiveSource" 19#include <utils/Log.h> 20 21#include "HTTPLiveSource.h" 22 23#include "AnotherPacketSource.h" 24#include "LiveDataSource.h" 25#include "LiveSession.h" 26 27#include <media/IMediaHTTPService.h> 28#include <media/stagefright/foundation/ABuffer.h> 29#include <media/stagefright/foundation/ADebug.h> 30#include <media/stagefright/foundation/AMessage.h> 31#include <media/stagefright/MediaErrors.h> 32#include <media/stagefright/MetaData.h> 33 34namespace android { 35 36NuPlayer::HTTPLiveSource::HTTPLiveSource( 37 const sp<AMessage> ¬ify, 38 const sp<IMediaHTTPService> &httpService, 39 const char *url, 40 const KeyedVector<String8, String8> *headers) 41 : Source(notify), 42 mHTTPService(httpService), 43 mURL(url), 44 mFlags(0), 45 mFinalResult(OK), 46 mOffset(0), 47 mFetchSubtitleDataGeneration(0) { 48 if (headers) { 49 mExtraHeaders = *headers; 50 51 ssize_t index = 52 mExtraHeaders.indexOfKey(String8("x-hide-urls-from-log")); 53 54 if (index >= 0) { 55 mFlags |= kFlagIncognito; 56 57 mExtraHeaders.removeItemsAt(index); 58 } 59 } 60} 61 62NuPlayer::HTTPLiveSource::~HTTPLiveSource() { 63 if (mLiveSession != NULL) { 64 mLiveSession->disconnect(); 65 mLiveSession.clear(); 66 67 mLiveLooper->stop(); 68 mLiveLooper.clear(); 69 } 70} 71 72void NuPlayer::HTTPLiveSource::prepareAsync() { 73 mLiveLooper = new ALooper; 74 mLiveLooper->setName("http live"); 75 mLiveLooper->start(); 76 77 sp<AMessage> notify = new AMessage(kWhatSessionNotify, id()); 78 79 mLiveSession = new LiveSession( 80 notify, 81 (mFlags & kFlagIncognito) ? LiveSession::kFlagIncognito : 0, 82 mHTTPService); 83 84 mLiveLooper->registerHandler(mLiveSession); 85 86 mLiveSession->connectAsync( 87 mURL.c_str(), mExtraHeaders.isEmpty() ? NULL : &mExtraHeaders); 88} 89 90void NuPlayer::HTTPLiveSource::start() { 91} 92 93sp<AMessage> NuPlayer::HTTPLiveSource::getFormat(bool audio) { 94 sp<AMessage> format; 95 status_t err = mLiveSession->getStreamFormat( 96 audio ? LiveSession::STREAMTYPE_AUDIO 97 : LiveSession::STREAMTYPE_VIDEO, 98 &format); 99 100 if (err != OK) { 101 return NULL; 102 } 103 104 return format; 105} 106 107status_t NuPlayer::HTTPLiveSource::feedMoreTSData() { 108 return OK; 109} 110 111status_t NuPlayer::HTTPLiveSource::dequeueAccessUnit( 112 bool audio, sp<ABuffer> *accessUnit) { 113 return mLiveSession->dequeueAccessUnit( 114 audio ? LiveSession::STREAMTYPE_AUDIO 115 : LiveSession::STREAMTYPE_VIDEO, 116 accessUnit); 117} 118 119status_t NuPlayer::HTTPLiveSource::getDuration(int64_t *durationUs) { 120 return mLiveSession->getDuration(durationUs); 121} 122 123status_t NuPlayer::HTTPLiveSource::getTrackInfo(Parcel *reply) const { 124 return mLiveSession->getTrackInfo(reply); 125} 126 127status_t NuPlayer::HTTPLiveSource::selectTrack(size_t trackIndex, bool select) { 128 status_t err = mLiveSession->selectTrack(trackIndex, select); 129 130 if (err == OK) { 131 mFetchSubtitleDataGeneration++; 132 if (select) { 133 sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id()); 134 msg->setInt32("generation", mFetchSubtitleDataGeneration); 135 msg->post(); 136 } 137 } 138 139 // LiveSession::selectTrack returns BAD_VALUE when selecting the currently 140 // selected track, or unselecting a non-selected track. In this case it's an 141 // no-op so we return OK. 142 return (err == OK || err == BAD_VALUE) ? (status_t)OK : err; 143} 144 145status_t NuPlayer::HTTPLiveSource::seekTo(int64_t seekTimeUs) { 146 return mLiveSession->seekTo(seekTimeUs); 147} 148 149void NuPlayer::HTTPLiveSource::onMessageReceived(const sp<AMessage> &msg) { 150 switch (msg->what()) { 151 case kWhatSessionNotify: 152 { 153 onSessionNotify(msg); 154 break; 155 } 156 157 case kWhatFetchSubtitleData: 158 { 159 int32_t generation; 160 CHECK(msg->findInt32("generation", &generation)); 161 162 if (generation != mFetchSubtitleDataGeneration) { 163 // stale 164 break; 165 } 166 167 sp<ABuffer> buffer; 168 if (mLiveSession->dequeueAccessUnit( 169 LiveSession::STREAMTYPE_SUBTITLES, &buffer) == OK) { 170 sp<AMessage> notify = dupNotify(); 171 notify->setInt32("what", kWhatSubtitleData); 172 notify->setBuffer("buffer", buffer); 173 notify->post(); 174 175 int64_t timeUs, baseUs, durationUs, delayUs; 176 CHECK(buffer->meta()->findInt64("baseUs", &baseUs)); 177 CHECK(buffer->meta()->findInt64("timeUs", &timeUs)); 178 CHECK(buffer->meta()->findInt64("durationUs", &durationUs)); 179 delayUs = baseUs + timeUs - ALooper::GetNowUs(); 180 181 msg->post(delayUs > 0ll ? delayUs : 0ll); 182 } else { 183 // try again in 1 second 184 msg->post(1000000ll); 185 } 186 187 break; 188 } 189 190 default: 191 Source::onMessageReceived(msg); 192 break; 193 } 194} 195 196void NuPlayer::HTTPLiveSource::onSessionNotify(const sp<AMessage> &msg) { 197 int32_t what; 198 CHECK(msg->findInt32("what", &what)); 199 200 switch (what) { 201 case LiveSession::kWhatPrepared: 202 { 203 // notify the current size here if we have it, otherwise report an initial size of (0,0) 204 sp<AMessage> format = getFormat(false /* audio */); 205 int32_t width; 206 int32_t height; 207 if (format != NULL && 208 format->findInt32("width", &width) && format->findInt32("height", &height)) { 209 notifyVideoSizeChanged(width, height); 210 } else { 211 notifyVideoSizeChanged(0, 0); 212 } 213 214 uint32_t flags = FLAG_CAN_PAUSE; 215 if (mLiveSession->isSeekable()) { 216 flags |= FLAG_CAN_SEEK; 217 flags |= FLAG_CAN_SEEK_BACKWARD; 218 flags |= FLAG_CAN_SEEK_FORWARD; 219 } 220 221 if (mLiveSession->hasDynamicDuration()) { 222 flags |= FLAG_DYNAMIC_DURATION; 223 } 224 225 notifyFlagsChanged(flags); 226 227 notifyPrepared(); 228 break; 229 } 230 231 case LiveSession::kWhatPreparationFailed: 232 { 233 status_t err; 234 CHECK(msg->findInt32("err", &err)); 235 236 notifyPrepared(err); 237 break; 238 } 239 240 case LiveSession::kWhatStreamsChanged: 241 { 242 uint32_t changedMask; 243 CHECK(msg->findInt32( 244 "changedMask", (int32_t *)&changedMask)); 245 246 bool audio = changedMask & LiveSession::STREAMTYPE_AUDIO; 247 bool video = changedMask & LiveSession::STREAMTYPE_VIDEO; 248 249 sp<AMessage> reply; 250 CHECK(msg->findMessage("reply", &reply)); 251 252 sp<AMessage> notify = dupNotify(); 253 notify->setInt32("what", kWhatQueueDecoderShutdown); 254 notify->setInt32("audio", audio); 255 notify->setInt32("video", video); 256 notify->setMessage("reply", reply); 257 notify->post(); 258 break; 259 } 260 261 case LiveSession::kWhatError: 262 { 263 break; 264 } 265 266 default: 267 TRESPASS(); 268 } 269} 270 271} // namespace android 272 273