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/chromium_http_stub.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 33namespace android { 34 35HTTPBase::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 47sp<HTTPBase> HTTPBase::Create(uint32_t flags) { 48#if CHROMIUM_AVAILABLE 49 HTTPBase *dataSource = createChromiumHTTPDataSource(flags); 50 if (dataSource) { 51 return dataSource; 52 } 53#endif 54 { 55 TRESPASS(); 56 57 return NULL; 58 } 59} 60 61void HTTPBase::addBandwidthMeasurement( 62 size_t numBytes, int64_t delayUs) { 63 Mutex::Autolock autoLock(mLock); 64 65 BandwidthEntry entry; 66 entry.mDelayUs = delayUs; 67 entry.mNumBytes = numBytes; 68 mTotalTransferTimeUs += delayUs; 69 mTotalTransferBytes += numBytes; 70 71 mBandwidthHistory.push_back(entry); 72 if (++mNumBandwidthHistoryItems > 100) { 73 BandwidthEntry *entry = &*mBandwidthHistory.begin(); 74 mTotalTransferTimeUs -= entry->mDelayUs; 75 mTotalTransferBytes -= entry->mNumBytes; 76 mBandwidthHistory.erase(mBandwidthHistory.begin()); 77 --mNumBandwidthHistoryItems; 78 79 int64_t timeNowUs = ALooper::GetNowUs(); 80 if (timeNowUs - mPrevBandwidthMeasureTimeUs >= 81 mBandWidthCollectFreqMs * 1000LL) { 82 83 if (mPrevBandwidthMeasureTimeUs != 0) { 84 mPrevEstimatedBandWidthKbps = 85 (mTotalTransferBytes * 8E3 / mTotalTransferTimeUs); 86 } 87 mPrevBandwidthMeasureTimeUs = timeNowUs; 88 } 89 } 90 91} 92 93bool HTTPBase::estimateBandwidth(int32_t *bandwidth_bps) { 94 Mutex::Autolock autoLock(mLock); 95 96 if (mNumBandwidthHistoryItems < 2) { 97 return false; 98 } 99 100 *bandwidth_bps = ((double)mTotalTransferBytes * 8E6 / mTotalTransferTimeUs); 101 102 return true; 103} 104 105status_t HTTPBase::getEstimatedBandwidthKbps(int32_t *kbps) { 106 Mutex::Autolock autoLock(mLock); 107 *kbps = mPrevEstimatedBandWidthKbps; 108 return OK; 109} 110 111status_t HTTPBase::setBandwidthStatCollectFreq(int32_t freqMs) { 112 Mutex::Autolock autoLock(mLock); 113 114 if (freqMs < kMinBandwidthCollectFreqMs 115 || freqMs > kMaxBandwidthCollectFreqMs) { 116 117 ALOGE("frequency (%d ms) is out of range [1000, 60000]", freqMs); 118 return BAD_VALUE; 119 } 120 121 ALOGI("frequency set to %d ms", freqMs); 122 mBandWidthCollectFreqMs = freqMs; 123 return OK; 124} 125 126void HTTPBase::setUID(uid_t uid) { 127 mUIDValid = true; 128 mUID = uid; 129} 130 131bool HTTPBase::getUID(uid_t *uid) const { 132 if (!mUIDValid) { 133 return false; 134 } 135 136 *uid = mUID; 137 138 return true; 139} 140 141// static 142void HTTPBase::RegisterSocketUserTag(int sockfd, uid_t uid, uint32_t kTag) { 143 int res = qtaguid_tagSocket(sockfd, kTag, uid); 144 if (res != 0) { 145 ALOGE("Failed tagging socket %d for uid %d (My UID=%d)", sockfd, uid, geteuid()); 146 } 147} 148 149// static 150void HTTPBase::UnRegisterSocketUserTag(int sockfd) { 151 int res = qtaguid_untagSocket(sockfd); 152 if (res != 0) { 153 ALOGE("Failed untagging socket %d (My UID=%d)", sockfd, geteuid()); 154 } 155} 156 157} // namespace android 158