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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "include/AMRExtractor.h"
#include "include/MP3Extractor.h"
#include "include/MPEG4Extractor.h"
#include "include/WAVExtractor.h"
#include "include/OggExtractor.h"
#include "include/MPEG2TSExtractor.h"
#include "include/NuCachedSource2.h"
#include "include/NuHTTPDataSource.h"
#include "matroska/MatroskaExtractor.h"
#include <media/stagefright/DataSource.h>
#include <media/stagefright/FileSource.h>
#include <media/stagefright/MediaErrors.h>
#include <utils/String8.h>
namespace android {
bool DataSource::getUInt16(off_t offset, uint16_t *x) {
*x = 0;
uint8_t byte[2];
if (readAt(offset, byte, 2) != 2) {
return false;
}
*x = (byte[0] << 8) | byte[1];
return true;
}
status_t DataSource::getSize(off_t *size) {
*size = 0;
return ERROR_UNSUPPORTED;
}
////////////////////////////////////////////////////////////////////////////////
Mutex DataSource::gSnifferMutex;
List<DataSource::SnifferFunc> DataSource::gSniffers;
bool DataSource::sniff(String8 *mimeType, float *confidence) {
*mimeType = "";
*confidence = 0.0f;
Mutex::Autolock autoLock(gSnifferMutex);
for (List<SnifferFunc>::iterator it = gSniffers.begin();
it != gSniffers.end(); ++it) {
String8 newMimeType;
float newConfidence;
if ((*it)(this, &newMimeType, &newConfidence)) {
if (newConfidence > *confidence) {
*mimeType = newMimeType;
*confidence = newConfidence;
}
}
}
return *confidence > 0.0;
}
// static
void DataSource::RegisterSniffer(SnifferFunc func) {
Mutex::Autolock autoLock(gSnifferMutex);
for (List<SnifferFunc>::iterator it = gSniffers.begin();
it != gSniffers.end(); ++it) {
if (*it == func) {
return;
}
}
gSniffers.push_back(func);
}
// static
void DataSource::RegisterDefaultSniffers() {
RegisterSniffer(SniffMP3);
RegisterSniffer(SniffMPEG4);
RegisterSniffer(SniffAMR);
RegisterSniffer(SniffWAV);
RegisterSniffer(SniffOgg);
RegisterSniffer(SniffMatroska);
RegisterSniffer(SniffMPEG2TS);
}
// static
sp<DataSource> DataSource::CreateFromURI(
const char *uri, const KeyedVector<String8, String8> *headers) {
sp<DataSource> source;
if (!strncasecmp("file://", uri, 7)) {
source = new FileSource(uri + 7);
} else if (!strncasecmp("http://", uri, 7)) {
sp<NuHTTPDataSource> httpSource = new NuHTTPDataSource;
if (httpSource->connect(uri, headers) != OK) {
return NULL;
}
source = new NuCachedSource2(httpSource);
} else {
// Assume it's a filename.
source = new FileSource(uri);
}
if (source == NULL || source->initCheck() != OK) {
return NULL;
}
return source;
}
} // namespace android
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