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 #ifndef HTTP_BASE_H_ 18 19 #define HTTP_BASE_H_ 20 21 #include <media/stagefright/foundation/ABase.h> 22 #include <media/stagefright/DataSource.h> 23 #include <media/stagefright/MediaErrors.h> 24 #include <utils/threads.h> 25 26 namespace android { 27 28 struct HTTPBase : public DataSource { 29 enum Flags { 30 // Don't log any URLs. 31 kFlagIncognito = 1 32 }; 33 34 HTTPBase(); 35 36 virtual status_t connect( 37 const char *uri, 38 const KeyedVector<String8, String8> *headers = NULL, 39 off64_t offset = 0) = 0; 40 41 virtual void disconnect() = 0; 42 43 // Returns true if bandwidth could successfully be estimated, 44 // false otherwise. 45 virtual bool estimateBandwidth(int32_t *bandwidth_bps); 46 47 virtual status_t getEstimatedBandwidthKbps(int32_t *kbps); 48 49 virtual status_t setBandwidthStatCollectFreq(int32_t freqMs); 50 51 static status_t UpdateProxyConfig( 52 const char *host, int32_t port, const char *exclusionList); 53 54 void setUID(uid_t uid); 55 bool getUID(uid_t *uid) const; 56 57 static sp<HTTPBase> Create(uint32_t flags = 0); 58 59 static void RegisterSocketUserTag(int sockfd, uid_t uid, uint32_t kTag); 60 static void UnRegisterSocketUserTag(int sockfd); 61 62 protected: 63 void addBandwidthMeasurement(size_t numBytes, int64_t delayUs); 64 65 private: 66 struct BandwidthEntry { 67 int64_t mDelayUs; 68 size_t mNumBytes; 69 }; 70 71 Mutex mLock; 72 73 List<BandwidthEntry> mBandwidthHistory; 74 size_t mNumBandwidthHistoryItems; 75 int64_t mTotalTransferTimeUs; 76 size_t mTotalTransferBytes; 77 78 enum { 79 kMinBandwidthCollectFreqMs = 1000, // 1 second 80 kMaxBandwidthCollectFreqMs = 60000, // one minute 81 }; 82 83 int64_t mPrevBandwidthMeasureTimeUs; 84 int32_t mPrevEstimatedBandWidthKbps; 85 int32_t mBandWidthCollectFreqMs; 86 87 bool mUIDValid; 88 uid_t mUID; 89 90 DISALLOW_EVIL_CONSTRUCTORS(HTTPBase); 91 }; 92 93 } // namespace android 94 95 #endif // HTTP_BASE_H_ 96