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71 lines
2.4 KiB
71 lines
2.4 KiB
4 months ago
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/*
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* Copyright 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_IDATASOURCE_H
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#define ANDROID_IDATASOURCE_H
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#include <binder/IInterface.h>
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#include <media/stagefright/foundation/ABase.h>
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#include <utils/Errors.h>
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#include <utils/String8.h>
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namespace android {
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class IMemory;
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class DecryptHandle;
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// A binder interface for implementing a stagefright DataSource remotely.
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class IDataSource : public IInterface {
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public:
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DECLARE_META_INTERFACE(DataSource);
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// Get the memory that readAt writes into.
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virtual sp<IMemory> getIMemory() = 0;
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// Read up to |size| bytes into the memory returned by getIMemory(). Returns
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// the number of bytes read, or negative value on error (eg.
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// ERROR_END_OF_STREAM indicating EOS. This is needed by CallbackDataSource
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// to properly handle reading of last chunk). |size| must not be larger than
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// the buffer.
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virtual ssize_t readAt(off64_t offset, size_t size) = 0;
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// Get the size, or -1 if the size is unknown.
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virtual status_t getSize(off64_t* size) = 0;
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// This should be called before deleting |this|. The other methods may
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// return errors if they're called after calling close().
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virtual void close() = 0;
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// Get the flags of the source.
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// Refer to DataSource:Flags for the definition of the flags.
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virtual uint32_t getFlags() = 0;
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// get a description of the source, e.g. the url or filename it is based on
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virtual String8 toString() = 0;
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private:
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DISALLOW_EVIL_CONSTRUCTORS(IDataSource);
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};
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// ----------------------------------------------------------------------------
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class BnDataSource : public BnInterface<IDataSource> {
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public:
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virtual status_t onTransact(uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags = 0);
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};
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}; // namespace android
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#endif // ANDROID_IDATASOURCE_H
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