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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.
*/
#ifndef DATA_SOURCE_H_
#define DATA_SOURCE_H_
#include <sys/types.h>
#include <android/IDataSource.h>
#include <media/stagefright/MediaErrors.h>
#include <media/stagefright/DataSourceBase.h>
#include <media/MediaExtractorPluginApi.h>
#include <utils/Errors.h>
#include <utils/RefBase.h>
#include <utils/threads.h>
namespace android {
class String8;
class DataSource : public DataSourceBase, public virtual RefBase {
public:
DataSource() : mWrapper(NULL) {}
// returns a pointer to IDataSource if it is wrapped.
virtual sp<IDataSource> getIDataSource() const {
return nullptr;
}
virtual String8 toString() {
return String8("<unspecified>");
}
virtual status_t reconnectAtOffset(off64_t /*offset*/) {
return ERROR_UNSUPPORTED;
}
////////////////////////////////////////////////////////////////////////////
virtual String8 getUri() {
return String8();
}
virtual bool getUri(char *uriString, size_t bufferSize) final {
int ret = snprintf(uriString, bufferSize, "%s", getUri().c_str());
return ret >= 0 && static_cast<size_t>(ret) < bufferSize;
}
virtual String8 getMIMEType() const {
return String8("application/octet-stream");
}
CDataSource *wrap() {
if (mWrapper) {
return mWrapper;
}
mWrapper = new CDataSource();
mWrapper->handle = this;
mWrapper->readAt = [](void *handle, off64_t offset, void *data, size_t size) -> ssize_t {
return ((DataSource*)handle)->readAt(offset, data, size);
};
mWrapper->getSize = [](void *handle, off64_t *size) -> status_t {
return ((DataSource*)handle)->getSize(size);
};
mWrapper->flags = [](void *handle) -> uint32_t {
return ((DataSource*)handle)->flags();
};
mWrapper->getUri = [](void *handle, char *uriString, size_t bufferSize) -> bool {
return ((DataSource*)handle)->getUri(uriString, bufferSize);
};
return mWrapper;
}
protected:
virtual ~DataSource() {
delete mWrapper;
}
private:
CDataSource *mWrapper;
DataSource(const DataSource &);
DataSource &operator=(const DataSource &);
};
} // namespace android
#endif // DATA_SOURCE_H_