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 17 #include "include/AMRExtractor.h" 18 19 #if CHROMIUM_AVAILABLE 20 #include "include/chromium_http_stub.h" 21 #endif 22 23 #include "include/AACExtractor.h" 24 #include "include/DRMExtractor.h" 25 #include "include/FLACExtractor.h" 26 #include "include/HTTPBase.h" 27 #include "include/MP3Extractor.h" 28 #include "include/MPEG2PSExtractor.h" 29 #include "include/MPEG2TSExtractor.h" 30 #include "include/MPEG4Extractor.h" 31 #include "include/NuCachedSource2.h" 32 #include "include/OggExtractor.h" 33 #include "include/WAVExtractor.h" 34 #include "include/WVMExtractor.h" 35 36 #include "matroska/MatroskaExtractor.h" 37 38 #include <media/stagefright/foundation/AMessage.h> 39 #include <media/stagefright/DataSource.h> 40 #include <media/stagefright/FileSource.h> 41 #include <media/stagefright/MediaErrors.h> 42 #include <utils/String8.h> 43 44 #include <cutils/properties.h> 45 46 namespace android { 47 48 bool DataSource::getUInt16(off64_t offset, uint16_t *x) { 49 *x = 0; 50 51 uint8_t byte[2]; 52 if (readAt(offset, byte, 2) != 2) { 53 return false; 54 } 55 56 *x = (byte[0] << 8) | byte[1]; 57 58 return true; 59 } 60 61 bool DataSource::getUInt24(off64_t offset, uint32_t *x) { 62 *x = 0; 63 64 uint8_t byte[3]; 65 if (readAt(offset, byte, 3) != 3) { 66 return false; 67 } 68 69 *x = (byte[0] << 16) | (byte[1] << 8) | byte[2]; 70 71 return true; 72 } 73 74 bool DataSource::getUInt32(off64_t offset, uint32_t *x) { 75 *x = 0; 76 77 uint32_t tmp; 78 if (readAt(offset, &tmp, 4) != 4) { 79 return false; 80 } 81 82 *x = ntohl(tmp); 83 84 return true; 85 } 86 87 bool DataSource::getUInt64(off64_t offset, uint64_t *x) { 88 *x = 0; 89 90 uint64_t tmp; 91 if (readAt(offset, &tmp, 8) != 8) { 92 return false; 93 } 94 95 *x = ntoh64(tmp); 96 97 return true; 98 } 99 100 status_t DataSource::getSize(off64_t *size) { 101 *size = 0; 102 103 return ERROR_UNSUPPORTED; 104 } 105 106 //////////////////////////////////////////////////////////////////////////////// 107 108 Mutex DataSource::gSnifferMutex; 109 List<DataSource::SnifferFunc> DataSource::gSniffers; 110 bool DataSource::gSniffersRegistered = false; 111 112 bool DataSource::sniff( 113 String8 *mimeType, float *confidence, sp<AMessage> *meta) { 114 *mimeType = ""; 115 *confidence = 0.0f; 116 meta->clear(); 117 118 { 119 Mutex::Autolock autoLock(gSnifferMutex); 120 if (!gSniffersRegistered) { 121 return false; 122 } 123 } 124 125 for (List<SnifferFunc>::iterator it = gSniffers.begin(); 126 it != gSniffers.end(); ++it) { 127 String8 newMimeType; 128 float newConfidence; 129 sp<AMessage> newMeta; 130 if ((*it)(this, &newMimeType, &newConfidence, &newMeta)) { 131 if (newConfidence > *confidence) { 132 *mimeType = newMimeType; 133 *confidence = newConfidence; 134 *meta = newMeta; 135 } 136 } 137 } 138 139 return *confidence > 0.0; 140 } 141 142 // static 143 void DataSource::RegisterSniffer_l(SnifferFunc func) { 144 for (List<SnifferFunc>::iterator it = gSniffers.begin(); 145 it != gSniffers.end(); ++it) { 146 if (*it == func) { 147 return; 148 } 149 } 150 151 gSniffers.push_back(func); 152 } 153 154 // static 155 void DataSource::RegisterDefaultSniffers() { 156 Mutex::Autolock autoLock(gSnifferMutex); 157 if (gSniffersRegistered) { 158 return; 159 } 160 161 RegisterSniffer_l(SniffMPEG4); 162 RegisterSniffer_l(SniffMatroska); 163 RegisterSniffer_l(SniffOgg); 164 RegisterSniffer_l(SniffWAV); 165 RegisterSniffer_l(SniffFLAC); 166 RegisterSniffer_l(SniffAMR); 167 RegisterSniffer_l(SniffMPEG2TS); 168 RegisterSniffer_l(SniffMP3); 169 RegisterSniffer_l(SniffAAC); 170 RegisterSniffer_l(SniffMPEG2PS); 171 RegisterSniffer_l(SniffWVM); 172 173 char value[PROPERTY_VALUE_MAX]; 174 if (property_get("drm.service.enabled", value, NULL) 175 && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 176 RegisterSniffer_l(SniffDRM); 177 } 178 gSniffersRegistered = true; 179 } 180 181 // static 182 sp<DataSource> DataSource::CreateFromURI( 183 const char *uri, const KeyedVector<String8, String8> *headers) { 184 bool isWidevine = !strncasecmp("widevine://", uri, 11); 185 186 sp<DataSource> source; 187 if (!strncasecmp("file://", uri, 7)) { 188 source = new FileSource(uri + 7); 189 } else if (!strncasecmp("http://", uri, 7) 190 || !strncasecmp("https://", uri, 8) 191 || isWidevine) { 192 sp<HTTPBase> httpSource = HTTPBase::Create(); 193 194 String8 tmp; 195 if (isWidevine) { 196 tmp = String8("http://"); 197 tmp.append(uri + 11); 198 199 uri = tmp.string(); 200 } 201 202 if (httpSource->connect(uri, headers) != OK) { 203 return NULL; 204 } 205 206 if (!isWidevine) { 207 String8 cacheConfig; 208 bool disconnectAtHighwatermark; 209 if (headers != NULL) { 210 KeyedVector<String8, String8> copy = *headers; 211 NuCachedSource2::RemoveCacheSpecificHeaders( 212 ©, &cacheConfig, &disconnectAtHighwatermark); 213 } 214 215 source = new NuCachedSource2( 216 httpSource, 217 cacheConfig.isEmpty() ? NULL : cacheConfig.string()); 218 } else { 219 // We do not want that prefetching, caching, datasource wrapper 220 // in the widevine:// case. 221 source = httpSource; 222 } 223 224 # if CHROMIUM_AVAILABLE 225 } else if (!strncasecmp("data:", uri, 5)) { 226 source = createDataUriSource(uri); 227 #endif 228 } else { 229 // Assume it's a filename. 230 source = new FileSource(uri); 231 } 232 233 if (source == NULL || source->initCheck() != OK) { 234 return NULL; 235 } 236 237 return source; 238 } 239 240 String8 DataSource::getMIMEType() const { 241 return String8("application/octet-stream"); 242 } 243 244 } // namespace android 245
