1 /* 2 * Copyright (C) 2011 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 "HTTPBase" 19 #include <utils/Log.h> 20 21 #include "include/HTTPBase.h" 22 23 #if CHROMIUM_AVAILABLE 24 #include "include/ChromiumHTTPDataSource.h" 25 #endif 26 27 #include <media/stagefright/foundation/ADebug.h> 28 #include <media/stagefright/foundation/ALooper.h> 29 30 #include <cutils/properties.h> 31 #include <cutils/qtaguid.h> 32 33 namespace android { 34 35 HTTPBase::HTTPBase() 36 : mNumBandwidthHistoryItems(0), 37 mTotalTransferTimeUs(0), 38 mTotalTransferBytes(0), 39 mPrevBandwidthMeasureTimeUs(0), 40 mPrevEstimatedBandWidthKbps(0), 41 mBandWidthCollectFreqMs(5000), 42 mUIDValid(false), 43 mUID(0) { 44 } 45 46 // static 47 sp<HTTPBase> HTTPBase::Create(uint32_t flags) { 48 #if CHROMIUM_AVAILABLE 49 return new ChromiumHTTPDataSource(flags); 50 #endif 51 { 52 TRESPASS(); 53 54 return NULL; 55 } 56 } 57 58 void HTTPBase::addBandwidthMeasurement( 59 size_t numBytes, int64_t delayUs) { 60 Mutex::Autolock autoLock(mLock); 61 62 BandwidthEntry entry; 63 entry.mDelayUs = delayUs; 64 entry.mNumBytes = numBytes; 65 mTotalTransferTimeUs += delayUs; 66 mTotalTransferBytes += numBytes; 67 68 mBandwidthHistory.push_back(entry); 69 if (++mNumBandwidthHistoryItems > 100) { 70 BandwidthEntry *entry = &*mBandwidthHistory.begin(); 71 mTotalTransferTimeUs -= entry->mDelayUs; 72 mTotalTransferBytes -= entry->mNumBytes; 73 mBandwidthHistory.erase(mBandwidthHistory.begin()); 74 --mNumBandwidthHistoryItems; 75 76 int64_t timeNowUs = ALooper::GetNowUs(); 77 if (timeNowUs - mPrevBandwidthMeasureTimeUs >= 78 mBandWidthCollectFreqMs * 1000LL) { 79 80 if (mPrevBandwidthMeasureTimeUs != 0) { 81 mPrevEstimatedBandWidthKbps = 82 (mTotalTransferBytes * 8E3 / mTotalTransferTimeUs); 83 } 84 mPrevBandwidthMeasureTimeUs = timeNowUs; 85 } 86 } 87 88 } 89 90 bool HTTPBase::estimateBandwidth(int32_t *bandwidth_bps) { 91 Mutex::Autolock autoLock(mLock); 92 93 if (mNumBandwidthHistoryItems < 2) { 94 return false; 95 } 96 97 *bandwidth_bps = ((double)mTotalTransferBytes * 8E6 / mTotalTransferTimeUs); 98 99 return true; 100 } 101 102 status_t HTTPBase::getEstimatedBandwidthKbps(int32_t *kbps) { 103 Mutex::Autolock autoLock(mLock); 104 *kbps = mPrevEstimatedBandWidthKbps; 105 return OK; 106 } 107 108 status_t HTTPBase::setBandwidthStatCollectFreq(int32_t freqMs) { 109 Mutex::Autolock autoLock(mLock); 110 111 if (freqMs < kMinBandwidthCollectFreqMs 112 || freqMs > kMaxBandwidthCollectFreqMs) { 113 114 ALOGE("frequency (%d ms) is out of range [1000, 60000]", freqMs); 115 return BAD_VALUE; 116 } 117 118 ALOGI("frequency set to %d ms", freqMs); 119 mBandWidthCollectFreqMs = freqMs; 120 return OK; 121 } 122 123 void HTTPBase::setUID(uid_t uid) { 124 mUIDValid = true; 125 mUID = uid; 126 } 127 128 bool HTTPBase::getUID(uid_t *uid) const { 129 if (!mUIDValid) { 130 return false; 131 } 132 133 *uid = mUID; 134 135 return true; 136 } 137 138 // static 139 void HTTPBase::RegisterSocketUserTag(int sockfd, uid_t uid, uint32_t kTag) { 140 int res = qtaguid_tagSocket(sockfd, kTag, uid); 141 if (res != 0) { 142 ALOGE("Failed tagging socket %d for uid %d (My UID=%d)", sockfd, uid, geteuid()); 143 } 144 } 145 146 // static 147 void HTTPBase::UnRegisterSocketUserTag(int sockfd) { 148 int res = qtaguid_untagSocket(sockfd); 149 if (res != 0) { 150 ALOGE("Failed untagging socket %d (My UID=%d)", sockfd, geteuid()); 151 } 152 } 153 154 } // namespace android 155