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/*
* Copyright 2015 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 ANDROID_IDATASOURCE_H
#define ANDROID_IDATASOURCE_H
#include <binder/IInterface.h>
#include <media/stagefright/foundation/ABase.h>
#include <utils/Errors.h>
namespace android {
class IMemory;
// A binder interface for implementing a stagefright DataSource remotely.
class IDataSource : public IInterface {
public:
DECLARE_META_INTERFACE(DataSource);
// Get the memory that readAt writes into.
virtual sp<IMemory> getIMemory() = 0;
// Read up to |size| bytes into the memory returned by getIMemory(). Returns
// the number of bytes read, or -1 on error. |size| must not be larger than
// the buffer.
virtual ssize_t readAt(off64_t offset, size_t size) = 0;
// Get the size, or -1 if the size is unknown.
virtual status_t getSize(off64_t* size) = 0;
// This should be called before deleting |this|. The other methods may
// return errors if they're called after calling close().
virtual void close() = 0;
private:
DISALLOW_EVIL_CONSTRUCTORS(IDataSource);
};
// ----------------------------------------------------------------------------
class BnDataSource : public BnInterface<IDataSource> {
public:
virtual status_t onTransact(uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
}; // namespace android
#endif // ANDROID_IDATASOURCE_H
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