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249 lines
9.0 KiB
249 lines
9.0 KiB
/*
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* Copyright (C) 2019 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_NDEBUG 0
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#define LOG_TAG "C2AllocatorBlob"
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#include <set>
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#include <C2AllocatorBlob.h>
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#include <C2PlatformSupport.h>
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#include <android/hardware/graphics/common/1.2/types.h>
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#include <utils/Log.h>
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namespace android {
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using ::android::hardware::graphics::common::V1_2::PixelFormat;
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constexpr uint32_t kLinearBufferHeight = 1u;
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constexpr uint32_t kLinearBufferFormat = static_cast<uint32_t>(PixelFormat::BLOB);
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namespace {
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c2_status_t GetCapacityFromHandle(const C2Handle* const grallocHandle, size_t* capacity) {
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uint32_t width, height, format, stride, generation, igbp_slot;
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uint64_t usage, igbp_id;
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_UnwrapNativeCodec2GrallocMetadata(grallocHandle, &width, &height, &format, &usage, &stride,
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&generation, &igbp_id, &igbp_slot);
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if (height != kLinearBufferHeight || format != kLinearBufferFormat) {
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return C2_BAD_VALUE;
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}
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*capacity = width;
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return C2_OK;
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}
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} // namespace
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// C2AllocationBlob is a wrapper for C2AllocationGralloc allocated by C2AllocatorGralloc.
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// C2AllocationBlob::handle() delegates to the backed C2AllocationGralloc::handle().
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class C2AllocationBlob : public C2LinearAllocation {
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public:
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C2AllocationBlob(std::shared_ptr<C2GraphicAllocation> graphicAllocation, size_t capacity,
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C2Allocator::id_t allocatorId);
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~C2AllocationBlob() override;
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c2_status_t map(size_t offset, size_t size, C2MemoryUsage usage, C2Fence* fence,
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void** addr /* nonnull */) override;
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c2_status_t unmap(void* addr, size_t size, C2Fence* fenceFd) override;
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id_t getAllocatorId() const override { return mAllocatorId; }
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const C2Handle* handle() const override { return mGraphicAllocation->handle(); }
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bool equals(const std::shared_ptr<C2LinearAllocation>& other) const override {
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return other && other->handle() == handle();
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}
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private:
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const std::shared_ptr<C2GraphicAllocation> mGraphicAllocation;
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const C2Allocator::id_t mAllocatorId;
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std::mutex mMapLock;
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std::multiset<std::pair<size_t, size_t>> mMappedOffsetSize;
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uint8_t *mMappedAddr;
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};
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C2AllocationBlob::C2AllocationBlob(
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std::shared_ptr<C2GraphicAllocation> graphicAllocation, size_t capacity,
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C2Allocator::id_t allocatorId)
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: C2LinearAllocation(capacity),
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mGraphicAllocation(std::move(graphicAllocation)),
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mAllocatorId(allocatorId),
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mMappedAddr(nullptr) {}
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C2AllocationBlob::~C2AllocationBlob() {
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if (mMappedAddr) {
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C2Rect rect(capacity(), kLinearBufferHeight);
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mGraphicAllocation->unmap(&mMappedAddr, rect, nullptr);
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}
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}
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c2_status_t C2AllocationBlob::map(size_t offset, size_t size, C2MemoryUsage usage,
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C2Fence* fence, void** addr /* nonnull */) {
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*addr = nullptr;
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if (size > capacity() || offset > capacity() || offset > capacity() - size) {
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ALOGV("C2AllocationBlob: map: bad offset / size: offset=%zu size=%zu capacity=%u",
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offset, size, capacity());
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return C2_BAD_VALUE;
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}
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std::unique_lock<std::mutex> lock(mMapLock);
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if (mMappedAddr) {
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*addr = mMappedAddr + offset;
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mMappedOffsetSize.insert({offset, size});
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ALOGV("C2AllocationBlob: mapped from existing mapping: offset=%zu size=%zu capacity=%u",
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offset, size, capacity());
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return C2_OK;
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}
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C2PlanarLayout layout;
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C2Rect rect = C2Rect(capacity(), kLinearBufferHeight);
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c2_status_t err = mGraphicAllocation->map(rect, usage, fence, &layout, &mMappedAddr);
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if (err != C2_OK) {
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ALOGV("C2AllocationBlob: map failed: offset=%zu size=%zu capacity=%u err=%d",
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offset, size, capacity(), err);
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mMappedAddr = nullptr;
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return err;
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}
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*addr = mMappedAddr + offset;
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mMappedOffsetSize.insert({offset, size});
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ALOGV("C2AllocationBlob: new map succeeded: offset=%zu size=%zu capacity=%u",
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offset, size, capacity());
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return C2_OK;
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}
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c2_status_t C2AllocationBlob::unmap(void* addr, size_t size, C2Fence* fenceFd) {
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std::unique_lock<std::mutex> lock(mMapLock);
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uint8_t *u8Addr = static_cast<uint8_t *>(addr);
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if (u8Addr < mMappedAddr || mMappedAddr + capacity() < u8Addr + size) {
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ALOGV("C2AllocationBlob: unmap: Bad addr / size: addr=%p size=%zu capacity=%u",
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addr, size, capacity());
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return C2_BAD_VALUE;
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}
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auto it = mMappedOffsetSize.find(std::make_pair(u8Addr - mMappedAddr, size));
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if (it == mMappedOffsetSize.end()) {
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ALOGV("C2AllocationBlob: unrecognized map: addr=%p size=%zu capacity=%u",
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addr, size, capacity());
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return C2_BAD_VALUE;
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}
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mMappedOffsetSize.erase(it);
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if (!mMappedOffsetSize.empty()) {
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ALOGV("C2AllocationBlob: still maintain mapping: addr=%p size=%zu capacity=%u",
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addr, size, capacity());
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return C2_OK;
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}
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C2Rect rect(capacity(), kLinearBufferHeight);
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c2_status_t err = mGraphicAllocation->unmap(&mMappedAddr, rect, fenceFd);
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ALOGV("C2AllocationBlob: last unmap: addr=%p size=%zu capacity=%u err=%d",
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addr, size, capacity(), err);
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mMappedAddr = nullptr;
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return err;
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}
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/* ====================================== BLOB ALLOCATOR ====================================== */
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C2AllocatorBlob::C2AllocatorBlob(id_t id) {
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C2MemoryUsage minUsage = {0, 0};
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C2MemoryUsage maxUsage = {C2MemoryUsage::CPU_READ | C2MemoryUsage::READ_PROTECTED,
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C2MemoryUsage::CPU_WRITE};
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Traits traits = {"android.allocator.blob", id, LINEAR, minUsage, maxUsage};
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mTraits = std::make_shared<C2Allocator::Traits>(traits);
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auto allocatorStore = GetCodec2PlatformAllocatorStore();
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allocatorStore->fetchAllocator(C2PlatformAllocatorStore::GRALLOC, &mC2AllocatorGralloc);
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if (!mC2AllocatorGralloc) {
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ALOGE("Failed to obtain C2AllocatorGralloc as backed allocator");
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}
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}
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C2AllocatorBlob::~C2AllocatorBlob() {}
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c2_status_t C2AllocatorBlob::newLinearAllocation(
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uint32_t capacity, C2MemoryUsage usage, std::shared_ptr<C2LinearAllocation>* allocation) {
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if (allocation == nullptr) {
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return C2_BAD_VALUE;
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}
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allocation->reset();
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if (!mC2AllocatorGralloc) {
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return C2_CORRUPTED;
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}
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// Note: the BLOB allocator does not support padding as this functionality is expected
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// to be provided by the gralloc implementation.
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std::shared_ptr<C2GraphicAllocation> graphicAllocation;
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c2_status_t status = mC2AllocatorGralloc->newGraphicAllocation(
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capacity, kLinearBufferHeight, kLinearBufferFormat, usage, &graphicAllocation);
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if (status != C2_OK) {
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ALOGE("Failed newGraphicAllocation");
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return status;
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}
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allocation->reset(new C2AllocationBlob(std::move(graphicAllocation),
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static_cast<size_t>(capacity), mTraits->id));
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return C2_OK;
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}
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c2_status_t C2AllocatorBlob::priorLinearAllocation(
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const C2Handle* handle, std::shared_ptr<C2LinearAllocation>* allocation) {
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if (allocation == nullptr) {
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return C2_BAD_VALUE;
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}
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allocation->reset();
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if (!mC2AllocatorGralloc) {
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return C2_CORRUPTED;
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}
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std::shared_ptr<C2GraphicAllocation> graphicAllocation;
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c2_status_t status = mC2AllocatorGralloc->priorGraphicAllocation(handle, &graphicAllocation);
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if (status != C2_OK) {
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ALOGE("Failed priorGraphicAllocation");
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return status;
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}
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const C2Handle* const grallocHandle = graphicAllocation->handle();
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size_t capacity = 0;
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status = GetCapacityFromHandle(grallocHandle, &capacity);
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if (status != C2_OK) {
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ALOGE("Failed to extract capacity from Handle");
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return status;
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}
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allocation->reset(new C2AllocationBlob(std::move(graphicAllocation), capacity, mTraits->id));
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return C2_OK;
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}
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id_t C2AllocatorBlob::getId() const {
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return mTraits->id;
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}
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C2String C2AllocatorBlob::getName() const {
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return mTraits->name;
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}
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std::shared_ptr<const C2Allocator::Traits> C2AllocatorBlob::getTraits() const {
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return mTraits;
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}
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// static
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bool C2AllocatorBlob::CheckHandle(const C2Handle* const o) {
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size_t capacity;
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// Distinguish C2Handle purely allocated by C2AllocatorGralloc, or one allocated through
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// C2AllocatorBlob, by checking the handle's height is 1, and its format is
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// PixelFormat::BLOB by GetCapacityFromHandle().
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return C2AllocatorGralloc::CheckHandle(o) && GetCapacityFromHandle(o, &capacity) == C2_OK;
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}
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} // namespace android
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