204 lines
7.6 KiB
C++
204 lines
7.6 KiB
C++
// Copyright 2021 The Dawn Authors
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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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#include <fcntl.h>
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#include <gbm.h>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include "VideoViewsTests.h"
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#include "dawn/common/Assert.h"
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#include "dawn/native/VulkanBackend.h"
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// "linux-chromeos-rel"'s gbm.h is too old to compile, missing this change at least:
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// https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/1963001/10/gbm.h#244
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#ifndef MINIGBM
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#define GBM_BO_USE_TEXTURING (1 << 5)
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#define GBM_BO_USE_SW_WRITE_RARELY (1 << 12)
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#define GBM_BO_USE_HW_VIDEO_DECODER (1 << 13)
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#endif
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class PlatformTextureGbm : public VideoViewsTestBackend::PlatformTexture {
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public:
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PlatformTextureGbm(wgpu::Texture&& texture, gbm_bo* gbmBo)
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: PlatformTexture(std::move(texture)), mGbmBo(gbmBo) {}
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~PlatformTextureGbm() override = default;
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// TODO(chromium:1258986): Add DISJOINT vkImage support for multi-plannar formats.
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bool CanWrapAsWGPUTexture() override {
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ASSERT(mGbmBo != nullptr);
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// Checks if all plane handles of a multi-planar gbm_bo are same.
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gbm_bo_handle plane0Handle = gbm_bo_get_handle_for_plane(mGbmBo, 0);
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for (int plane = 1; plane < gbm_bo_get_plane_count(mGbmBo); ++plane) {
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if (gbm_bo_get_handle_for_plane(mGbmBo, plane).u32 != plane0Handle.u32) {
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return false;
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}
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}
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return true;
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}
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gbm_bo* GetGbmBo() { return mGbmBo; }
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private:
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gbm_bo* mGbmBo = nullptr;
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};
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class VideoViewsTestBackendGbm : public VideoViewsTestBackend {
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public:
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void OnSetUp(WGPUDevice device) override {
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mWGPUDevice = device;
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mGbmDevice = CreateGbmDevice();
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}
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void OnTearDown() override { gbm_device_destroy(mGbmDevice); }
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private:
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gbm_device* CreateGbmDevice() {
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// Render nodes [1] are the primary interface for communicating with the GPU on
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// devices that support DRM. The actual filename of the render node is
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// implementation-specific, so we must scan through all possible filenames to find
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// one that we can use [2].
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//
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// [1] https://dri.freedesktop.org/docs/drm/gpu/drm-uapi.html#render-nodes
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// [2]
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// https://cs.chromium.org/chromium/src/ui/ozone/platform/wayland/gpu/drm_render_node_path_finder.cc
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const uint32_t kRenderNodeStart = 128;
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const uint32_t kRenderNodeEnd = kRenderNodeStart + 16;
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const std::string kRenderNodeTemplate = "/dev/dri/renderD";
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int renderNodeFd = -1;
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for (uint32_t i = kRenderNodeStart; i < kRenderNodeEnd; i++) {
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std::string renderNode = kRenderNodeTemplate + std::to_string(i);
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renderNodeFd = open(renderNode.c_str(), O_RDWR);
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if (renderNodeFd >= 0) {
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break;
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}
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}
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ASSERT(renderNodeFd > 0);
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gbm_device* gbmDevice = gbm_create_device(renderNodeFd);
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ASSERT(gbmDevice != nullptr);
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return gbmDevice;
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}
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static uint32_t GetGbmBoFormat(wgpu::TextureFormat format) {
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switch (format) {
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case wgpu::TextureFormat::R8BG8Biplanar420Unorm:
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return GBM_FORMAT_NV12;
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default:
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UNREACHABLE();
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}
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}
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WGPUTextureFormat ToWGPUTextureFormat(wgpu::TextureFormat format) {
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switch (format) {
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case wgpu::TextureFormat::R8BG8Biplanar420Unorm:
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return WGPUTextureFormat_R8BG8Biplanar420Unorm;
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default:
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UNREACHABLE();
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}
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}
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WGPUTextureUsage ToWGPUTextureUsage(wgpu::TextureUsage usage) {
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switch (usage) {
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case wgpu::TextureUsage::TextureBinding:
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return WGPUTextureUsage_TextureBinding;
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default:
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UNREACHABLE();
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}
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}
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std::unique_ptr<VideoViewsTestBackend::PlatformTexture> CreateVideoTextureForTest(
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wgpu::TextureFormat format,
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wgpu::TextureUsage usage,
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bool isCheckerboard) override {
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uint32_t flags = GBM_BO_USE_SCANOUT | GBM_BO_USE_TEXTURING | GBM_BO_USE_HW_VIDEO_DECODER |
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GBM_BO_USE_SW_WRITE_RARELY;
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gbm_bo* gbmBo = gbm_bo_create(mGbmDevice, VideoViewsTests::kYUVImageDataWidthInTexels,
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VideoViewsTests::kYUVImageDataHeightInTexels,
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GetGbmBoFormat(format), flags);
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if (gbmBo == nullptr) {
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return nullptr;
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}
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void* mapHandle = nullptr;
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uint32_t strideBytes = 0;
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void* addr = gbm_bo_map(gbmBo, 0, 0, VideoViewsTests::kYUVImageDataWidthInTexels,
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VideoViewsTests::kYUVImageDataHeightInTexels, GBM_BO_TRANSFER_WRITE,
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&strideBytes, &mapHandle);
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EXPECT_NE(addr, nullptr);
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std::vector<uint8_t> initialData =
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VideoViewsTests::GetTestTextureData(format, isCheckerboard);
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std::memcpy(addr, initialData.data(), initialData.size());
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gbm_bo_unmap(gbmBo, mapHandle);
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wgpu::TextureDescriptor textureDesc;
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textureDesc.format = format;
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textureDesc.dimension = wgpu::TextureDimension::e2D;
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textureDesc.usage = usage;
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textureDesc.size = {VideoViewsTests::kYUVImageDataWidthInTexels,
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VideoViewsTests::kYUVImageDataHeightInTexels, 1};
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wgpu::DawnTextureInternalUsageDescriptor internalDesc;
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internalDesc.internalUsage = wgpu::TextureUsage::CopySrc;
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textureDesc.nextInChain = &internalDesc;
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dawn::native::vulkan::ExternalImageDescriptorDmaBuf descriptor = {};
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descriptor.cTextureDescriptor =
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reinterpret_cast<const WGPUTextureDescriptor*>(&textureDesc);
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descriptor.isInitialized = true;
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descriptor.memoryFD = gbm_bo_get_fd(gbmBo);
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descriptor.stride = gbm_bo_get_stride(gbmBo);
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descriptor.drmModifier = gbm_bo_get_modifier(gbmBo);
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descriptor.waitFDs = {};
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return std::make_unique<PlatformTextureGbm>(
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wgpu::Texture::Acquire(dawn::native::vulkan::WrapVulkanImage(mWGPUDevice, &descriptor)),
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gbmBo);
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}
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void DestroyVideoTextureForTest(
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std::unique_ptr<VideoViewsTestBackend::PlatformTexture>&& platformTexture) override {
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// Exports the signal and ignores it.
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dawn::native::vulkan::ExternalImageExportInfoDmaBuf exportInfo;
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dawn::native::vulkan::ExportVulkanImage(platformTexture->wgpuTexture.Get(),
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VK_IMAGE_LAYOUT_GENERAL, &exportInfo);
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for (int fd : exportInfo.semaphoreHandles) {
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ASSERT_NE(fd, -1);
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close(fd);
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}
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gbm_bo* gbmBo = static_cast<PlatformTextureGbm*>(platformTexture.get())->GetGbmBo();
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ASSERT_NE(gbmBo, nullptr);
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gbm_bo_destroy(gbmBo);
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}
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WGPUDevice mWGPUDevice = nullptr;
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gbm_device* mGbmDevice = nullptr;
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};
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// static
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BackendTestConfig VideoViewsTestBackend::Backend() {
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return VulkanBackend();
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}
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// static
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std::unique_ptr<VideoViewsTestBackend> VideoViewsTestBackend::Create() {
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return std::make_unique<VideoViewsTestBackendGbm>();
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}
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