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52 lines
1.7 KiB
52 lines
1.7 KiB
// Copyright (C) 2016 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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#pragma once
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#include "IOStream.h"
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#include "RenderChannelImpl.h"
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#include <memory>
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namespace emugl {
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// An IOStream instance that can be used by the host RenderThread to
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// wrap a RenderChannelImpl channel.
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class ChannelStream final : public IOStream {
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public:
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ChannelStream(RenderChannelImpl* channel, size_t bufSize);
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void forceStop();
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int writeFully(const void* buf, size_t len) override;
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const unsigned char *readFully( void *buf, size_t len) override;
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protected:
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virtual void* allocBuffer(size_t minSize) override final;
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virtual int commitBuffer(size_t size) override final;
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virtual const unsigned char* readRaw(void* buf, size_t* inout_len)
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override final;
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virtual void* getDmaForReading(uint64_t guest_paddr) override final;
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virtual void unlockDma(uint64_t guest_paddr) override final;
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void onSave(android::base::Stream* stream) override;
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unsigned char* onLoad(android::base::Stream* stream) override;
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private:
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RenderChannelImpl* mChannel;
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RenderChannel::Buffer mWriteBuffer;
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RenderChannel::Buffer mReadBuffer;
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size_t mReadBufferLeft = 0;
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};
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} // namespace emugl
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