mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GLContext.h"
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#include "mozilla/unused.h"
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#include "nsXULAppAPI.h"
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#include "FenceUtilsGonk.h"
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using namespace android;
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using namespace base;
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using namespace mozilla::layers;
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namespace IPC {
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void
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ParamTraits<FenceHandle>::Write(Message* aMsg,
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const paramType& aParam)
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{
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#if ANDROID_VERSION >= 19
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sp<Fence> flattenable = aParam.mFence;
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#else
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Flattenable *flattenable = aParam.mFence.get();
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#endif
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size_t nbytes = flattenable->getFlattenedSize();
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size_t nfds = flattenable->getFdCount();
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char data[nbytes];
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int fds[nfds];
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#if ANDROID_VERSION >= 19
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// Make a copy of "data" and "fds" for flatten() to avoid casting problem
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void *pdata = (void *)data;
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int *pfds = fds;
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flattenable->flatten(pdata, nbytes, pfds, nfds);
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// In Kitkat, flatten() will change the value of nbytes and nfds, which dues
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// to multiple parcelable object consumption. The actual size and fd count
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// which returned by getFlattenedSize() and getFdCount() are not changed.
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// So we change nbytes and nfds back by call corresponding calls.
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nbytes = flattenable->getFlattenedSize();
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nfds = flattenable->getFdCount();
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#else
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flattenable->flatten(data, nbytes, fds, nfds);
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#endif
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aMsg->WriteSize(nbytes);
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aMsg->WriteSize(nfds);
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aMsg->WriteBytes(data, nbytes);
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for (size_t n = 0; n < nfds; ++n) {
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// These buffers can't die in transit because they're created
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// synchonously and the parent-side buffer can only be dropped if
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// there's a crash.
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aMsg->WriteFileDescriptor(FileDescriptor(fds[n], false));
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}
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}
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bool
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ParamTraits<FenceHandle>::Read(const Message* aMsg,
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void** aIter, paramType* aResult)
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{
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size_t nbytes;
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size_t nfds;
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const char* data;
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if (!aMsg->ReadSize(aIter, &nbytes) ||
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!aMsg->ReadSize(aIter, &nfds) ||
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!aMsg->ReadBytes(aIter, &data, nbytes)) {
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return false;
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}
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int fds[nfds];
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for (size_t n = 0; n < nfds; ++n) {
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FileDescriptor fd;
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if (!aMsg->ReadFileDescriptor(aIter, &fd)) {
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return false;
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}
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// If the GraphicBuffer was shared cross-process, SCM_RIGHTS does
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// the right thing and dup's the fd. If it's shared cross-thread,
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// SCM_RIGHTS doesn't dup the fd. That's surprising, but we just
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// deal with it here. NB: only the "default" (master) process can
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// alloc gralloc buffers.
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bool sameProcess = (XRE_GetProcessType() == GeckoProcessType_Default);
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int dupFd = sameProcess ? dup(fd.fd) : fd.fd;
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fds[n] = dupFd;
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}
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sp<Fence> buffer(new Fence());
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#if ANDROID_VERSION >= 19
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// Make a copy of "data" and "fds" for unflatten() to avoid casting problem
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void const *pdata = (void const *)data;
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int const *pfds = fds;
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if (NO_ERROR == buffer->unflatten(pdata, nbytes, pfds, nfds)) {
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#else
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Flattenable *flattenable = buffer.get();
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if (NO_ERROR == flattenable->unflatten(data, nbytes, fds, nfds)) {
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#endif
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aResult->mFence = buffer;
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return true;
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}
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return false;
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}
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} // namespace IPC
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namespace mozilla {
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namespace layers {
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FenceHandle::FenceHandle(const sp<Fence>& aFence)
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: mFence(aFence)
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{
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}
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} // namespace layers
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} // namespace mozilla
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