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66 lines
1.9 KiB
66 lines
1.9 KiB
/*
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* Copyright (C) 2020 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 STAGEFRIGHT_CODEC2_ALLOCATION_ION_H_
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#define STAGEFRIGHT_CODEC2_ALLOCATION_ION_H_
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#include <C2Buffer.h>
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namespace android {
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struct C2HandleIon : public C2Handle {
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// ion handle owns ionFd(!) and bufferFd
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C2HandleIon(int bufferFd, size_t size)
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: C2Handle(cHeader),
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mFds{ bufferFd },
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mInts{ int(size & 0xFFFFFFFF), int((uint64_t(size) >> 32) & 0xFFFFFFFF), kMagic } { }
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static bool IsValid(const C2Handle * const o);
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// deprecated
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static bool isValid(const C2Handle * const o) { return IsValid(o); }
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int bufferFd() const { return mFds.mBuffer; }
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size_t size() const {
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return size_t(unsigned(mInts.mSizeLo))
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| size_t(uint64_t(unsigned(mInts.mSizeHi)) << 32);
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}
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protected:
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struct {
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int mBuffer; // shared ion buffer
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} mFds;
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struct {
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int mSizeLo; // low 32-bits of size
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int mSizeHi; // high 32-bits of size
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int mMagic;
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} mInts;
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private:
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typedef C2HandleIon _type;
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enum {
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kMagic = '\xc2io\x00',
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numFds = sizeof(mFds) / sizeof(int),
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numInts = sizeof(mInts) / sizeof(int),
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version = sizeof(C2Handle)
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};
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//constexpr static C2Handle cHeader = { version, numFds, numInts, {} };
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const static C2Handle cHeader;
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};
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} // namespace android
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#endif // STAGEFRIGHT_CODEC2_ALLOCATION_ION_H_
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