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; 110 111 bool DataSource::sniff( 112 String8 *mimeType, float *confidence, sp<AMessage> *meta) { 113 *mimeType = ""; 114 *confidence = 0.0f; 115 meta->clear(); 116 117 Mutex::Autolock autoLock(gSnifferMutex); 118 for (List<SnifferFunc>::iterator it = gSniffers.begin(); 119 it != gSniffers.end(); ++it) { 120 String8 newMimeType; 121 float newConfidence; 122 sp<AMessage> newMeta; 123 if ((*it)(this, &newMimeType, &newConfidence, &newMeta)) { 124 if (newConfidence > *confidence) { 125 *mimeType = newMimeType; 126 *confidence = newConfidence; 127 *meta = newMeta; 128 } 129 } 130 } 131 132 return *confidence > 0.0; 133 } 134 135 // static 136 void DataSource::RegisterSniffer(SnifferFunc func) { 137 Mutex::Autolock autoLock(gSnifferMutex); 138 139 for (List<SnifferFunc>::iterator it = gSniffers.begin(); 140 it != gSniffers.end(); ++it) { 141 if (*it == func) { 142 return; 143 } 144 } 145 146 gSniffers.push_back(func); 147 } 148 149 // static 150 void DataSource::RegisterDefaultSniffers() { 151 RegisterSniffer(SniffMPEG4); 152 RegisterSniffer(SniffMatroska); 153 RegisterSniffer(SniffOgg); 154 RegisterSniffer(SniffWAV); 155 RegisterSniffer(SniffFLAC); 156 RegisterSniffer(SniffAMR); 157 RegisterSniffer(SniffMPEG2TS); 158 RegisterSniffer(SniffMP3); 159 RegisterSniffer(SniffAAC); 160 RegisterSniffer(SniffMPEG2PS); 161 RegisterSniffer(SniffWVM); 162 163 char value[PROPERTY_VALUE_MAX]; 164 if (property_get("drm.service.enabled", value, NULL) 165 && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 166 RegisterSniffer(SniffDRM); 167 } 168 } 169 170 // static 171 sp<DataSource> DataSource::CreateFromURI( 172 const char *uri, const KeyedVector<String8, String8> *headers) { 173 bool isWidevine = !strncasecmp("widevine://", uri, 11); 174 175 sp<DataSource> source; 176 if (!strncasecmp("file://", uri, 7)) { 177 source = new FileSource(uri + 7); 178 } else if (!strncasecmp("http://", uri, 7) 179 || !strncasecmp("https://", uri, 8) 180 || isWidevine) { 181 sp<HTTPBase> httpSource = HTTPBase::Create(); 182 183 String8 tmp; 184 if (isWidevine) { 185 tmp = String8("http://"); 186 tmp.append(uri + 11); 187 188 uri = tmp.string(); 189 } 190 191 if (httpSource->connect(uri, headers) != OK) { 192 return NULL; 193 } 194 195 if (!isWidevine) { 196 String8 cacheConfig; 197 bool disconnectAtHighwatermark; 198 if (headers != NULL) { 199 KeyedVector<String8, String8> copy = *headers; 200 NuCachedSource2::RemoveCacheSpecificHeaders( 201 ©, &cacheConfig, &disconnectAtHighwatermark); 202 } 203 204 source = new NuCachedSource2( 205 httpSource, 206 cacheConfig.isEmpty() ? NULL : cacheConfig.string()); 207 } else { 208 // We do not want that prefetching, caching, datasource wrapper 209 // in the widevine:// case. 210 source = httpSource; 211 } 212 213 # if CHROMIUM_AVAILABLE 214 } else if (!strncasecmp("data:", uri, 5)) { 215 source = createDataUriSource(uri); 216 #endif 217 } else { 218 // Assume it's a filename. 219 source = new FileSource(uri); 220 } 221 222 if (source == NULL || source->initCheck() != OK) { 223 return NULL; 224 } 225 226 return source; 227 } 228 229 String8 DataSource::getMIMEType() const { 230 return String8("application/octet-stream"); 231 } 232 233 } // namespace android 234
