1 /* 2 * Copyright (C) 2009 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 //#define LOG_NDEBUG 0 17 #define LOG_TAG "DataSource" 18 19 #include "include/CallbackDataSource.h" 20 #include "include/HTTPBase.h" 21 #include "include/NuCachedSource2.h" 22 23 #include <media/IDataSource.h> 24 #include <media/IMediaHTTPConnection.h> 25 #include <media/IMediaHTTPService.h> 26 #include <media/stagefright/foundation/ADebug.h> 27 #include <media/stagefright/foundation/AMessage.h> 28 #include <media/stagefright/DataSource.h> 29 #include <media/stagefright/DataURISource.h> 30 #include <media/stagefright/FileSource.h> 31 #include <media/stagefright/MediaErrors.h> 32 #include <media/stagefright/MediaHTTP.h> 33 #include <media/stagefright/RemoteDataSource.h> 34 #include <media/stagefright/Utils.h> 35 #include <utils/String8.h> 36 37 #include <cutils/properties.h> 38 39 #include <private/android_filesystem_config.h> 40 41 namespace android { 42 43 bool DataSource::getUInt16(off64_t offset, uint16_t *x) { 44 *x = 0; 45 46 uint8_t byte[2]; 47 if (readAt(offset, byte, 2) != 2) { 48 return false; 49 } 50 51 *x = (byte[0] << 8) | byte[1]; 52 53 return true; 54 } 55 56 bool DataSource::getUInt24(off64_t offset, uint32_t *x) { 57 *x = 0; 58 59 uint8_t byte[3]; 60 if (readAt(offset, byte, 3) != 3) { 61 return false; 62 } 63 64 *x = (byte[0] << 16) | (byte[1] << 8) | byte[2]; 65 66 return true; 67 } 68 69 bool DataSource::getUInt32(off64_t offset, uint32_t *x) { 70 *x = 0; 71 72 uint32_t tmp; 73 if (readAt(offset, &tmp, 4) != 4) { 74 return false; 75 } 76 77 *x = ntohl(tmp); 78 79 return true; 80 } 81 82 bool DataSource::getUInt64(off64_t offset, uint64_t *x) { 83 *x = 0; 84 85 uint64_t tmp; 86 if (readAt(offset, &tmp, 8) != 8) { 87 return false; 88 } 89 90 *x = ntoh64(tmp); 91 92 return true; 93 } 94 95 status_t DataSource::getSize(off64_t *size) { 96 *size = 0; 97 98 return ERROR_UNSUPPORTED; 99 } 100 101 sp<IDataSource> DataSource::getIDataSource() const { 102 return nullptr; 103 } 104 105 //////////////////////////////////////////////////////////////////////////////// 106 107 // static 108 sp<DataSource> DataSource::CreateFromURI( 109 const sp<IMediaHTTPService> &httpService, 110 const char *uri, 111 const KeyedVector<String8, String8> *headers, 112 String8 *contentType, 113 HTTPBase *httpSource) { 114 if (contentType != NULL) { 115 *contentType = ""; 116 } 117 118 sp<DataSource> source; 119 if (!strncasecmp("file://", uri, 7)) { 120 source = new FileSource(uri + 7); 121 } else if (!strncasecmp("http://", uri, 7) || !strncasecmp("https://", uri, 8)) { 122 if (httpService == NULL) { 123 ALOGE("Invalid http service!"); 124 return NULL; 125 } 126 127 if (httpSource == NULL) { 128 sp<IMediaHTTPConnection> conn = httpService->makeHTTPConnection(); 129 if (conn == NULL) { 130 ALOGE("Failed to make http connection from http service!"); 131 return NULL; 132 } 133 httpSource = new MediaHTTP(conn); 134 } 135 136 String8 cacheConfig; 137 bool disconnectAtHighwatermark = false; 138 KeyedVector<String8, String8> nonCacheSpecificHeaders; 139 if (headers != NULL) { 140 nonCacheSpecificHeaders = *headers; 141 NuCachedSource2::RemoveCacheSpecificHeaders( 142 &nonCacheSpecificHeaders, 143 &cacheConfig, 144 &disconnectAtHighwatermark); 145 } 146 147 if (httpSource->connect(uri, &nonCacheSpecificHeaders) != OK) { 148 ALOGE("Failed to connect http source!"); 149 return NULL; 150 } 151 152 if (contentType != NULL) { 153 *contentType = httpSource->getMIMEType(); 154 } 155 156 source = NuCachedSource2::Create( 157 httpSource, 158 cacheConfig.isEmpty() ? NULL : cacheConfig.string(), 159 disconnectAtHighwatermark); 160 } else if (!strncasecmp("data:", uri, 5)) { 161 source = DataURISource::Create(uri); 162 } else { 163 // Assume it's a filename. 164 source = new FileSource(uri); 165 } 166 167 if (source == NULL || source->initCheck() != OK) { 168 return NULL; 169 } 170 171 return source; 172 } 173 174 sp<DataSource> DataSource::CreateFromFd(int fd, int64_t offset, int64_t length) { 175 sp<FileSource> source = new FileSource(fd, offset, length); 176 return source->initCheck() != OK ? nullptr : source; 177 } 178 179 sp<DataSource> DataSource::CreateMediaHTTP(const sp<IMediaHTTPService> &httpService) { 180 if (httpService == NULL) { 181 return NULL; 182 } 183 184 sp<IMediaHTTPConnection> conn = httpService->makeHTTPConnection(); 185 if (conn == NULL) { 186 return NULL; 187 } else { 188 return new MediaHTTP(conn); 189 } 190 } 191 192 sp<DataSource> DataSource::CreateFromIDataSource(const sp<IDataSource> &source) { 193 return new TinyCacheSource(new CallbackDataSource(source)); 194 } 195 196 String8 DataSource::getMIMEType() const { 197 return String8("application/octet-stream"); 198 } 199 200 sp<IDataSource> DataSource::asIDataSource() { 201 return RemoteDataSource::wrap(sp<DataSource>(this)); 202 } 203 204 } // namespace android 205