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#include "include/MP3Extractor.h" 19#include "include/MPEG4Extractor.h" 20#include "include/WAVExtractor.h" 21#include "include/OggExtractor.h" 22#include "include/MPEG2PSExtractor.h" 23#include "include/MPEG2TSExtractor.h" 24#include "include/NuCachedSource2.h" 25#include "include/HTTPBase.h" 26#include "include/DRMExtractor.h" 27#include "include/FLACExtractor.h" 28#include "include/AACExtractor.h" 29 30#include "matroska/MatroskaExtractor.h" 31 32#include <media/stagefright/foundation/AMessage.h> 33#include <media/stagefright/DataSource.h> 34#include <media/stagefright/FileSource.h> 35#include <media/stagefright/MediaErrors.h> 36#include <utils/String8.h> 37 38#include <cutils/properties.h> 39 40namespace android { 41 42bool DataSource::getUInt16(off64_t offset, uint16_t *x) { 43 *x = 0; 44 45 uint8_t byte[2]; 46 if (readAt(offset, byte, 2) != 2) { 47 return false; 48 } 49 50 *x = (byte[0] << 8) | byte[1]; 51 52 return true; 53} 54 55status_t DataSource::getSize(off64_t *size) { 56 *size = 0; 57 58 return ERROR_UNSUPPORTED; 59} 60 61//////////////////////////////////////////////////////////////////////////////// 62 63Mutex DataSource::gSnifferMutex; 64List<DataSource::SnifferFunc> DataSource::gSniffers; 65 66bool DataSource::sniff( 67 String8 *mimeType, float *confidence, sp<AMessage> *meta) { 68 *mimeType = ""; 69 *confidence = 0.0f; 70 meta->clear(); 71 72 Mutex::Autolock autoLock(gSnifferMutex); 73 for (List<SnifferFunc>::iterator it = gSniffers.begin(); 74 it != gSniffers.end(); ++it) { 75 String8 newMimeType; 76 float newConfidence; 77 sp<AMessage> newMeta; 78 if ((*it)(this, &newMimeType, &newConfidence, &newMeta)) { 79 if (newConfidence > *confidence) { 80 *mimeType = newMimeType; 81 *confidence = newConfidence; 82 *meta = newMeta; 83 } 84 } 85 } 86 87 return *confidence > 0.0; 88} 89 90// static 91void DataSource::RegisterSniffer(SnifferFunc func) { 92 Mutex::Autolock autoLock(gSnifferMutex); 93 94 for (List<SnifferFunc>::iterator it = gSniffers.begin(); 95 it != gSniffers.end(); ++it) { 96 if (*it == func) { 97 return; 98 } 99 } 100 101 gSniffers.push_back(func); 102} 103 104// static 105void DataSource::RegisterDefaultSniffers() { 106 RegisterSniffer(SniffMPEG4); 107 RegisterSniffer(SniffMatroska); 108 RegisterSniffer(SniffOgg); 109 RegisterSniffer(SniffWAV); 110 RegisterSniffer(SniffFLAC); 111 RegisterSniffer(SniffAMR); 112 RegisterSniffer(SniffMPEG2TS); 113 RegisterSniffer(SniffMP3); 114 RegisterSniffer(SniffAAC); 115 RegisterSniffer(SniffMPEG2PS); 116 117 char value[PROPERTY_VALUE_MAX]; 118 if (property_get("drm.service.enabled", value, NULL) 119 && (!strcmp(value, "1") || !strcasecmp(value, "true"))) { 120 RegisterSniffer(SniffDRM); 121 } 122} 123 124// static 125sp<DataSource> DataSource::CreateFromURI( 126 const char *uri, const KeyedVector<String8, String8> *headers) { 127 sp<DataSource> source; 128 if (!strncasecmp("file://", uri, 7)) { 129 source = new FileSource(uri + 7); 130 } else if (!strncasecmp("http://", uri, 7) 131 || !strncasecmp("https://", uri, 8)) { 132 sp<HTTPBase> httpSource = HTTPBase::Create(); 133 if (httpSource->connect(uri, headers) != OK) { 134 return NULL; 135 } 136 source = new NuCachedSource2(httpSource); 137 } else { 138 // Assume it's a filename. 139 source = new FileSource(uri); 140 } 141 142 if (source == NULL || source->initCheck() != OK) { 143 return NULL; 144 } 145 146 return source; 147} 148 149String8 DataSource::getMIMEType() const { 150 return String8("application/octet-stream"); 151} 152 153} // namespace android 154