SDPLoader.cpp revision a8b8488f703bb6bda039d7d98f87e4f9d845664d
1/* 2 * Copyright (C) 2012 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 "SDPLoader" 19#include <utils/Log.h> 20 21#include "SDPLoader.h" 22 23#include "ASessionDescription.h" 24#include "HTTPBase.h" 25 26#include <media/stagefright/foundation/ABuffer.h> 27#include <media/stagefright/foundation/ADebug.h> 28 29#define DEFAULT_SDP_SIZE 100000 30 31namespace android { 32 33SDPLoader::SDPLoader(const sp<AMessage> ¬ify, uint32_t flags, bool uidValid, uid_t uid) 34 : mNotify(notify), 35 mFlags(flags), 36 mUIDValid(uidValid), 37 mUID(uid), 38 mNetLooper(new ALooper), 39 mCancelled(false), 40 mHTTPDataSource( 41 HTTPBase::Create( 42 (mFlags & kFlagIncognito) 43 ? HTTPBase::kFlagIncognito 44 : 0)) { 45 if (mUIDValid) { 46 mHTTPDataSource->setUID(mUID); 47 } 48 49 mNetLooper->setName("sdp net"); 50 mNetLooper->start(false /* runOnCallingThread */, 51 false /* canCallJava */, 52 PRIORITY_HIGHEST); 53} 54 55void SDPLoader::load(const char *url, const KeyedVector<String8, String8> *headers) { 56 mNetLooper->registerHandler(this); 57 58 sp<AMessage> msg = new AMessage(kWhatLoad, id()); 59 msg->setString("url", url); 60 61 if (headers != NULL) { 62 msg->setPointer( 63 "headers", 64 new KeyedVector<String8, String8>(*headers)); 65 } 66 67 msg->post(); 68} 69 70void SDPLoader::cancel() { 71 mCancelled = true; 72 sp<HTTPBase> HTTPDataSource = mHTTPDataSource; 73 HTTPDataSource->disconnect(); 74} 75 76void SDPLoader::onMessageReceived(const sp<AMessage> &msg) { 77 switch (msg->what()) { 78 case kWhatLoad: 79 onLoad(msg); 80 break; 81 82 default: 83 TRESPASS(); 84 break; 85 } 86} 87 88void SDPLoader::onLoad(const sp<AMessage> &msg) { 89 status_t err = OK; 90 sp<ASessionDescription> desc = NULL; 91 AString url; 92 CHECK(msg->findString("url", &url)); 93 94 KeyedVector<String8, String8> *headers = NULL; 95 msg->findPointer("headers", (void **)&headers); 96 97 if (!(mFlags & kFlagIncognito)) { 98 ALOGV("onLoad '%s'", url.c_str()); 99 } else { 100 ALOGI("onLoad <URL suppressed>"); 101 } 102 103 if (!mCancelled) { 104 err = mHTTPDataSource->connect(url.c_str(), headers); 105 106 if (err != OK) { 107 ALOGE("connect() returned %d", err); 108 } 109 } 110 111 if (headers != NULL) { 112 delete headers; 113 headers = NULL; 114 } 115 116 off64_t sdpSize; 117 if (err == OK && !mCancelled) { 118 err = mHTTPDataSource->getSize(&sdpSize); 119 120 if (err != OK) { 121 //We did not get the size of the sdp file, default to a large value 122 sdpSize = DEFAULT_SDP_SIZE; 123 err = OK; 124 } 125 } 126 127 sp<ABuffer> buffer = new ABuffer(sdpSize); 128 129 if (err == OK && !mCancelled) { 130 ssize_t readSize = mHTTPDataSource->readAt(0, buffer->data(), sdpSize); 131 132 if (readSize < 0) { 133 ALOGE("Failed to read SDP, error code = %ld", readSize); 134 err = UNKNOWN_ERROR; 135 } else { 136 desc = new ASessionDescription; 137 138 if (desc == NULL || !desc->setTo(buffer->data(), (size_t)readSize)) { 139 err = UNKNOWN_ERROR; 140 ALOGE("Failed to parse SDP"); 141 } 142 } 143 } 144 145 mHTTPDataSource.clear(); 146 147 sp<AMessage> notify = mNotify->dup(); 148 notify->setInt32("what", kWhatSDPLoaded); 149 notify->setInt32("result", err); 150 notify->setObject("description", desc); 151 notify->post(); 152} 153 154} // namespace android 155