/*
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* Copyright (C) 2007 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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#define LOG_TAG "GraphicBuffer"
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
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#include <ui/GraphicBuffer.h>
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#include <cutils/atomic.h>
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#include <grallocusage/GrallocUsageConversion.h>
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#ifndef LIBUI_IN_VNDK
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#include <ui/BufferHubBuffer.h>
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#endif // LIBUI_IN_VNDK
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#include <ui/Gralloc2.h>
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#include <ui/GraphicBufferAllocator.h>
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#include <ui/GraphicBufferMapper.h>
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#include <utils/Trace.h>
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namespace android {
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// ===========================================================================
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// Buffer and implementation of ANativeWindowBuffer
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// ===========================================================================
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static uint64_t getUniqueId() {
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static volatile int32_t nextId = 0;
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uint64_t id = static_cast<uint64_t>(getpid()) << 32;
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id |= static_cast<uint32_t>(android_atomic_inc(&nextId));
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return id;
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}
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sp<GraphicBuffer> GraphicBuffer::from(ANativeWindowBuffer* anwb) {
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return static_cast<GraphicBuffer *>(anwb);
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}
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GraphicBuffer* GraphicBuffer::fromAHardwareBuffer(AHardwareBuffer* buffer) {
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return reinterpret_cast<GraphicBuffer*>(buffer);
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}
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GraphicBuffer const* GraphicBuffer::fromAHardwareBuffer(AHardwareBuffer const* buffer) {
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return reinterpret_cast<GraphicBuffer const*>(buffer);
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}
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AHardwareBuffer* GraphicBuffer::toAHardwareBuffer() {
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return reinterpret_cast<AHardwareBuffer*>(this);
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}
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AHardwareBuffer const* GraphicBuffer::toAHardwareBuffer() const {
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return reinterpret_cast<AHardwareBuffer const*>(this);
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}
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GraphicBuffer::GraphicBuffer()
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: BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
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mInitCheck(NO_ERROR), mId(getUniqueId()), mGenerationNumber(0)
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{
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width =
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height =
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stride =
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format =
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usage_deprecated = 0;
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usage = 0;
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layerCount = 0;
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handle = nullptr;
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}
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// deprecated
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GraphicBuffer::GraphicBuffer(uint32_t inWidth, uint32_t inHeight,
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PixelFormat inFormat, uint32_t inUsage, std::string requestorName)
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: GraphicBuffer(inWidth, inHeight, inFormat, 1, static_cast<uint64_t>(inUsage), requestorName)
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{
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}
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GraphicBuffer::GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
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uint32_t inLayerCount, uint64_t inUsage, std::string requestorName)
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: GraphicBuffer() {
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mInitCheck = initWithSize(inWidth, inHeight, inFormat, inLayerCount, inUsage,
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std::move(requestorName));
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}
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// deprecated
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GraphicBuffer::GraphicBuffer(uint32_t inWidth, uint32_t inHeight,
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PixelFormat inFormat, uint32_t inLayerCount, uint32_t inUsage,
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uint32_t inStride, native_handle_t* inHandle, bool keepOwnership)
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: GraphicBuffer(inHandle, keepOwnership ? TAKE_HANDLE : WRAP_HANDLE,
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inWidth, inHeight, inFormat, inLayerCount, static_cast<uint64_t>(inUsage),
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inStride)
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{
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}
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GraphicBuffer::GraphicBuffer(const native_handle_t* inHandle, HandleWrapMethod method,
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uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
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uint32_t inLayerCount, uint64_t inUsage, uint32_t inStride)
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: GraphicBuffer() {
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mInitCheck = initWithHandle(inHandle, method, inWidth, inHeight, inFormat, inLayerCount,
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inUsage, inStride);
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}
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#ifndef LIBUI_IN_VNDK
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GraphicBuffer::GraphicBuffer(std::unique_ptr<BufferHubBuffer> buffer) : GraphicBuffer() {
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if (buffer == nullptr) {
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mInitCheck = BAD_VALUE;
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return;
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}
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mInitCheck = initWithHandle(buffer->duplicateHandle(), /*method=*/TAKE_UNREGISTERED_HANDLE,
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buffer->desc().width, buffer->desc().height,
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static_cast<PixelFormat>(buffer->desc().format),
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buffer->desc().layers, buffer->desc().usage, buffer->desc().stride);
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mBufferId = buffer->id();
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mBufferHubBuffer = std::move(buffer);
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}
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#endif // LIBUI_IN_VNDK
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GraphicBuffer::~GraphicBuffer()
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{
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ATRACE_CALL();
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if (handle) {
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free_handle();
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}
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for (auto& [callback, context] : mDeathCallbacks) {
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callback(context, mId);
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}
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}
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void GraphicBuffer::free_handle()
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{
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if (mOwner == ownHandle) {
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mBufferMapper.freeBuffer(handle);
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} else if (mOwner == ownData) {
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GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
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allocator.free(handle);
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}
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handle = nullptr;
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}
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status_t GraphicBuffer::initCheck() const {
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return static_cast<status_t>(mInitCheck);
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}
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void GraphicBuffer::dumpAllocationsToSystemLog()
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{
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GraphicBufferAllocator::dumpToSystemLog();
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}
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ANativeWindowBuffer* GraphicBuffer::getNativeBuffer() const
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{
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return static_cast<ANativeWindowBuffer*>(
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const_cast<GraphicBuffer*>(this));
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}
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status_t GraphicBuffer::reallocate(uint32_t inWidth, uint32_t inHeight,
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PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage)
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{
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if (mOwner != ownData)
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return INVALID_OPERATION;
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if (handle &&
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static_cast<int>(inWidth) == width &&
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static_cast<int>(inHeight) == height &&
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inFormat == format &&
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inLayerCount == layerCount &&
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inUsage == usage)
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return NO_ERROR;
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if (handle) {
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GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
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allocator.free(handle);
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handle = nullptr;
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}
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return initWithSize(inWidth, inHeight, inFormat, inLayerCount, inUsage, "[Reallocation]");
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}
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bool GraphicBuffer::needsReallocation(uint32_t inWidth, uint32_t inHeight,
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PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage)
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{
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if (static_cast<int>(inWidth) != width) return true;
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if (static_cast<int>(inHeight) != height) return true;
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if (inFormat != format) return true;
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if (inLayerCount != layerCount) return true;
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if ((usage & inUsage) != inUsage) return true;
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if ((usage & USAGE_PROTECTED) != (inUsage & USAGE_PROTECTED)) return true;
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return false;
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}
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status_t GraphicBuffer::initWithSize(uint32_t inWidth, uint32_t inHeight,
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PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage,
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std::string requestorName)
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{
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GraphicBufferAllocator& allocator = GraphicBufferAllocator::get();
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uint32_t outStride = 0;
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status_t err = allocator.allocate(inWidth, inHeight, inFormat, inLayerCount,
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inUsage, &handle, &outStride, mId,
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std::move(requestorName));
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if (err == NO_ERROR) {
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mBufferMapper.getTransportSize(handle, &mTransportNumFds, &mTransportNumInts);
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width = static_cast<int>(inWidth);
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height = static_cast<int>(inHeight);
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format = inFormat;
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layerCount = inLayerCount;
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usage = inUsage;
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usage_deprecated = int(usage);
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stride = static_cast<int>(outStride);
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}
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return err;
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}
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status_t GraphicBuffer::initWithHandle(const native_handle_t* inHandle, HandleWrapMethod method,
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uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
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uint32_t inLayerCount, uint64_t inUsage, uint32_t inStride) {
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ANativeWindowBuffer::width = static_cast<int>(inWidth);
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ANativeWindowBuffer::height = static_cast<int>(inHeight);
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ANativeWindowBuffer::stride = static_cast<int>(inStride);
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ANativeWindowBuffer::format = inFormat;
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ANativeWindowBuffer::usage = inUsage;
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ANativeWindowBuffer::usage_deprecated = int(inUsage);
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ANativeWindowBuffer::layerCount = inLayerCount;
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mOwner = (method == WRAP_HANDLE) ? ownNone : ownHandle;
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if (method == TAKE_UNREGISTERED_HANDLE || method == CLONE_HANDLE) {
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buffer_handle_t importedHandle;
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status_t err = mBufferMapper.importBuffer(inHandle, inWidth, inHeight, inLayerCount,
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inFormat, inUsage, inStride, &importedHandle);
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if (err != NO_ERROR) {
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initWithHandle(nullptr, WRAP_HANDLE, 0, 0, 0, 0, 0, 0);
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return err;
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}
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if (method == TAKE_UNREGISTERED_HANDLE) {
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native_handle_close(inHandle);
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native_handle_delete(const_cast<native_handle_t*>(inHandle));
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}
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inHandle = importedHandle;
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mBufferMapper.getTransportSize(inHandle, &mTransportNumFds, &mTransportNumInts);
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}
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ANativeWindowBuffer::handle = inHandle;
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return NO_ERROR;
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}
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status_t GraphicBuffer::lock(uint32_t inUsage, void** vaddr, int32_t* outBytesPerPixel,
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int32_t* outBytesPerStride) {
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const Rect lockBounds(width, height);
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status_t res = lock(inUsage, lockBounds, vaddr, outBytesPerPixel, outBytesPerStride);
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return res;
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}
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status_t GraphicBuffer::lock(uint32_t inUsage, const Rect& rect, void** vaddr,
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int32_t* outBytesPerPixel, int32_t* outBytesPerStride) {
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if (rect.left < 0 || rect.right > width ||
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rect.top < 0 || rect.bottom > height) {
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ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
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rect.left, rect.top, rect.right, rect.bottom,
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width, height);
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return BAD_VALUE;
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}
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status_t res = getBufferMapper().lock(handle, inUsage, rect, vaddr, outBytesPerPixel,
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outBytesPerStride);
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return res;
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}
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status_t GraphicBuffer::lockYCbCr(uint32_t inUsage, android_ycbcr* ycbcr)
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{
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const Rect lockBounds(width, height);
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status_t res = lockYCbCr(inUsage, lockBounds, ycbcr);
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return res;
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}
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status_t GraphicBuffer::lockYCbCr(uint32_t inUsage, const Rect& rect,
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android_ycbcr* ycbcr)
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{
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if (rect.left < 0 || rect.right > width ||
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rect.top < 0 || rect.bottom > height) {
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ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
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rect.left, rect.top, rect.right, rect.bottom,
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width, height);
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return BAD_VALUE;
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}
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status_t res = getBufferMapper().lockYCbCr(handle, inUsage, rect, ycbcr);
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return res;
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}
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status_t GraphicBuffer::unlock()
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{
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status_t res = getBufferMapper().unlock(handle);
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return res;
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}
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status_t GraphicBuffer::lockAsync(uint32_t inUsage, void** vaddr, int fenceFd,
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int32_t* outBytesPerPixel, int32_t* outBytesPerStride) {
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const Rect lockBounds(width, height);
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status_t res =
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lockAsync(inUsage, lockBounds, vaddr, fenceFd, outBytesPerPixel, outBytesPerStride);
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return res;
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}
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status_t GraphicBuffer::lockAsync(uint32_t inUsage, const Rect& rect, void** vaddr, int fenceFd,
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int32_t* outBytesPerPixel, int32_t* outBytesPerStride) {
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return lockAsync(inUsage, inUsage, rect, vaddr, fenceFd, outBytesPerPixel, outBytesPerStride);
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}
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status_t GraphicBuffer::lockAsync(uint64_t inProducerUsage, uint64_t inConsumerUsage,
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const Rect& rect, void** vaddr, int fenceFd,
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int32_t* outBytesPerPixel, int32_t* outBytesPerStride) {
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if (rect.left < 0 || rect.right > width ||
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rect.top < 0 || rect.bottom > height) {
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ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
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rect.left, rect.top, rect.right, rect.bottom,
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width, height);
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return BAD_VALUE;
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}
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status_t res = getBufferMapper().lockAsync(handle, inProducerUsage, inConsumerUsage, rect,
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vaddr, fenceFd, outBytesPerPixel, outBytesPerStride);
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return res;
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}
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status_t GraphicBuffer::lockAsyncYCbCr(uint32_t inUsage, android_ycbcr* ycbcr,
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int fenceFd)
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{
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const Rect lockBounds(width, height);
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status_t res = lockAsyncYCbCr(inUsage, lockBounds, ycbcr, fenceFd);
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return res;
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}
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status_t GraphicBuffer::lockAsyncYCbCr(uint32_t inUsage, const Rect& rect,
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android_ycbcr* ycbcr, int fenceFd)
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{
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if (rect.left < 0 || rect.right > width ||
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rect.top < 0 || rect.bottom > height) {
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ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
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rect.left, rect.top, rect.right, rect.bottom,
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width, height);
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return BAD_VALUE;
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}
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status_t res = getBufferMapper().lockAsyncYCbCr(handle, inUsage, rect, ycbcr, fenceFd);
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return res;
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}
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status_t GraphicBuffer::unlockAsync(int *fenceFd)
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{
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status_t res = getBufferMapper().unlockAsync(handle, fenceFd);
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return res;
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}
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status_t GraphicBuffer::isSupported(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
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uint32_t inLayerCount, uint64_t inUsage,
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bool* outSupported) const {
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return mBufferMapper.isSupported(inWidth, inHeight, inFormat, inLayerCount, inUsage,
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outSupported);
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}
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size_t GraphicBuffer::getFlattenedSize() const {
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#ifndef LIBUI_IN_VNDK
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if (mBufferHubBuffer != nullptr) {
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return 48;
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}
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#endif
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return static_cast<size_t>(13 + (handle ? mTransportNumInts : 0)) * sizeof(int);
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}
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size_t GraphicBuffer::getFdCount() const {
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#ifndef LIBUI_IN_VNDK
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if (mBufferHubBuffer != nullptr) {
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return 0;
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}
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#endif
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return static_cast<size_t>(handle ? mTransportNumFds : 0);
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}
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status_t GraphicBuffer::flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const {
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#ifndef LIBUI_IN_VNDK
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if (mBufferHubBuffer != nullptr) {
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return flattenBufferHubBuffer(buffer, size);
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}
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#endif
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size_t sizeNeeded = GraphicBuffer::getFlattenedSize();
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if (size < sizeNeeded) return NO_MEMORY;
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size_t fdCountNeeded = GraphicBuffer::getFdCount();
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if (count < fdCountNeeded) return NO_MEMORY;
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int32_t* buf = static_cast<int32_t*>(buffer);
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buf[0] = 'GB01';
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buf[1] = width;
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buf[2] = height;
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buf[3] = stride;
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buf[4] = format;
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buf[5] = static_cast<int32_t>(layerCount);
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buf[6] = int(usage); // low 32-bits
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buf[7] = static_cast<int32_t>(mId >> 32);
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buf[8] = static_cast<int32_t>(mId & 0xFFFFFFFFull);
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buf[9] = static_cast<int32_t>(mGenerationNumber);
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buf[10] = 0;
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buf[11] = 0;
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buf[12] = int(usage >> 32); // high 32-bits
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if (handle) {
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buf[10] = int32_t(mTransportNumFds);
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buf[11] = int32_t(mTransportNumInts);
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memcpy(fds, handle->data, static_cast<size_t>(mTransportNumFds) * sizeof(int));
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memcpy(buf + 13, handle->data + handle->numFds,
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static_cast<size_t>(mTransportNumInts) * sizeof(int));
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}
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buffer = static_cast<void*>(static_cast<uint8_t*>(buffer) + sizeNeeded);
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size -= sizeNeeded;
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if (handle) {
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fds += mTransportNumFds;
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count -= static_cast<size_t>(mTransportNumFds);
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}
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return NO_ERROR;
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}
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status_t GraphicBuffer::unflatten(void const*& buffer, size_t& size, int const*& fds,
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size_t& count) {
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// Check if size is not smaller than buf[0] is supposed to take.
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if (size < sizeof(int)) {
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return NO_MEMORY;
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}
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int const* buf = static_cast<int const*>(buffer);
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// NOTE: it turns out that some media code generates a flattened GraphicBuffer manually!!!!!
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// see H2BGraphicBufferProducer.cpp
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uint32_t flattenWordCount = 0;
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if (buf[0] == 'GB01') {
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// new version with 64-bits usage bits
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flattenWordCount = 13;
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} else if (buf[0] == 'GBFR') {
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// old version, when usage bits were 32-bits
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flattenWordCount = 12;
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} else if (buf[0] == 'BHBB') { // BufferHub backed buffer.
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#ifndef LIBUI_IN_VNDK
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return unflattenBufferHubBuffer(buffer, size);
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#else
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return BAD_TYPE;
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#endif
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} else {
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return BAD_TYPE;
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}
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if (size < 12 * sizeof(int)) {
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android_errorWriteLog(0x534e4554, "114223584");
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return NO_MEMORY;
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}
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const size_t numFds = static_cast<size_t>(buf[10]);
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const size_t numInts = static_cast<size_t>(buf[11]);
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// Limit the maxNumber to be relatively small. The number of fds or ints
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// should not come close to this number, and the number itself was simply
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// chosen to be high enough to not cause issues and low enough to prevent
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// overflow problems.
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const size_t maxNumber = 4096;
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if (numFds >= maxNumber || numInts >= (maxNumber - flattenWordCount)) {
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width = height = stride = format = usage_deprecated = 0;
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layerCount = 0;
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usage = 0;
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handle = nullptr;
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ALOGE("unflatten: numFds or numInts is too large: %zd, %zd", numFds, numInts);
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return BAD_VALUE;
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}
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const size_t sizeNeeded = (flattenWordCount + numInts) * sizeof(int);
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if (size < sizeNeeded) return NO_MEMORY;
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size_t fdCountNeeded = numFds;
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if (count < fdCountNeeded) return NO_MEMORY;
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if (handle) {
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// free previous handle if any
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free_handle();
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}
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if (numFds || numInts) {
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width = buf[1];
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height = buf[2];
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stride = buf[3];
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format = buf[4];
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layerCount = static_cast<uintptr_t>(buf[5]);
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usage_deprecated = buf[6];
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if (flattenWordCount == 13) {
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usage = (uint64_t(buf[12]) << 32) | uint32_t(buf[6]);
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} else {
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usage = uint64_t(usage_deprecated);
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}
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native_handle* h =
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native_handle_create(static_cast<int>(numFds), static_cast<int>(numInts));
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if (!h) {
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width = height = stride = format = usage_deprecated = 0;
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layerCount = 0;
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usage = 0;
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handle = nullptr;
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ALOGE("unflatten: native_handle_create failed");
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return NO_MEMORY;
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}
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memcpy(h->data, fds, numFds * sizeof(int));
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memcpy(h->data + numFds, buf + flattenWordCount, numInts * sizeof(int));
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handle = h;
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} else {
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width = height = stride = format = usage_deprecated = 0;
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layerCount = 0;
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usage = 0;
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handle = nullptr;
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}
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mId = static_cast<uint64_t>(buf[7]) << 32;
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mId |= static_cast<uint32_t>(buf[8]);
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mGenerationNumber = static_cast<uint32_t>(buf[9]);
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mOwner = ownHandle;
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if (handle != nullptr) {
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buffer_handle_t importedHandle;
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status_t err = mBufferMapper.importBuffer(handle, uint32_t(width), uint32_t(height),
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uint32_t(layerCount), format, usage, uint32_t(stride), &importedHandle);
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if (err != NO_ERROR) {
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width = height = stride = format = usage_deprecated = 0;
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layerCount = 0;
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usage = 0;
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handle = nullptr;
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ALOGE("unflatten: registerBuffer failed: %s (%d)", strerror(-err), err);
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return err;
|
}
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native_handle_close(handle);
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native_handle_delete(const_cast<native_handle_t*>(handle));
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handle = importedHandle;
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mBufferMapper.getTransportSize(handle, &mTransportNumFds, &mTransportNumInts);
|
}
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buffer = static_cast<void const*>(static_cast<uint8_t const*>(buffer) + sizeNeeded);
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size -= sizeNeeded;
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fds += numFds;
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count -= numFds;
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return NO_ERROR;
|
}
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|
void GraphicBuffer::addDeathCallback(GraphicBufferDeathCallback deathCallback, void* context) {
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mDeathCallbacks.emplace_back(deathCallback, context);
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}
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#ifndef LIBUI_IN_VNDK
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status_t GraphicBuffer::flattenBufferHubBuffer(void*& buffer, size_t& size) const {
|
sp<NativeHandle> tokenHandle = mBufferHubBuffer->duplicate();
|
if (tokenHandle == nullptr || tokenHandle->handle() == nullptr ||
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tokenHandle->handle()->numFds != 0) {
|
return BAD_VALUE;
|
}
|
|
// Size needed for one label, one number of ints inside the token, one generation number and
|
// the token itself.
|
int numIntsInToken = tokenHandle->handle()->numInts;
|
const size_t sizeNeeded = static_cast<size_t>(3 + numIntsInToken) * sizeof(int);
|
if (size < sizeNeeded) {
|
ALOGE("%s: needed size %d, given size %d. Not enough memory.", __FUNCTION__,
|
static_cast<int>(sizeNeeded), static_cast<int>(size));
|
return NO_MEMORY;
|
}
|
size -= sizeNeeded;
|
|
int* buf = static_cast<int*>(buffer);
|
buf[0] = 'BHBB';
|
buf[1] = numIntsInToken;
|
memcpy(buf + 2, tokenHandle->handle()->data, static_cast<size_t>(numIntsInToken) * sizeof(int));
|
buf[2 + numIntsInToken] = static_cast<int32_t>(mGenerationNumber);
|
|
return NO_ERROR;
|
}
|
|
status_t GraphicBuffer::unflattenBufferHubBuffer(void const*& buffer, size_t& size) {
|
const int* buf = static_cast<const int*>(buffer);
|
int numIntsInToken = buf[1];
|
// Size needed for one label, one number of ints inside the token, one generation number and
|
// the token itself.
|
const size_t sizeNeeded = static_cast<size_t>(3 + numIntsInToken) * sizeof(int);
|
if (size < sizeNeeded) {
|
ALOGE("%s: needed size %d, given size %d. Not enough memory.", __FUNCTION__,
|
static_cast<int>(sizeNeeded), static_cast<int>(size));
|
return NO_MEMORY;
|
}
|
size -= sizeNeeded;
|
native_handle_t* importToken = native_handle_create(/*numFds=*/0, /*numInts=*/numIntsInToken);
|
memcpy(importToken->data, buf + 2, static_cast<size_t>(buf[1]) * sizeof(int));
|
sp<NativeHandle> importTokenHandle = NativeHandle::create(importToken, /*ownHandle=*/true);
|
std::unique_ptr<BufferHubBuffer> bufferHubBuffer = BufferHubBuffer::import(importTokenHandle);
|
if (bufferHubBuffer == nullptr || bufferHubBuffer.get() == nullptr) {
|
return BAD_VALUE;
|
}
|
// Reconstruct this GraphicBuffer object using the new BufferHubBuffer object.
|
if (handle) {
|
free_handle();
|
}
|
mId = 0;
|
mGenerationNumber = static_cast<uint32_t>(buf[2 + numIntsInToken]);
|
mInitCheck =
|
initWithHandle(bufferHubBuffer->duplicateHandle(), /*method=*/TAKE_UNREGISTERED_HANDLE,
|
bufferHubBuffer->desc().width, bufferHubBuffer->desc().height,
|
static_cast<PixelFormat>(bufferHubBuffer->desc().format),
|
bufferHubBuffer->desc().layers, bufferHubBuffer->desc().usage,
|
bufferHubBuffer->desc().stride);
|
mBufferId = bufferHubBuffer->id();
|
mBufferHubBuffer.reset(std::move(bufferHubBuffer.get()));
|
|
return NO_ERROR;
|
}
|
|
bool GraphicBuffer::isBufferHubBuffer() const {
|
return mBufferHubBuffer != nullptr;
|
}
|
#endif // LIBUI_IN_VNDK
|
|
// ---------------------------------------------------------------------------
|
|
}; // namespace android
|
