/* GStreamer * Copyright (C) 2024 Seungha Yang * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /* * The MIT License (MIT) * * Copyright (c) Microsoft Corporation * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstd3d12dxgicapture.h" #include "gstd3d12pluginutils.h" #include #include #include #include #include #include #include #include #include #define _XM_NO_INTRINSICS_ #include GST_DEBUG_CATEGORY_EXTERN (gst_d3d12_screen_capture_debug); #define GST_CAT_DEFAULT gst_d3d12_screen_capture_debug /* *INDENT-OFF* */ using namespace Microsoft::WRL; using namespace DirectX; /* List of GstD3D12DxgiCapture weakref */ static std::mutex g_g_dupl_list_lock; static GList *g_dupl_list = nullptr; /* Below implementation were taken from Microsoft sample * https://github.com/microsoft/Windows-classic-samples/tree/master/Samples/DXGIDesktopDuplication */ /* These are the errors we expect from IDXGIOutput1::DuplicateOutput * due to a transition */ static HRESULT CreateDuplicationExpectedErrors[] = { DXGI_ERROR_DEVICE_REMOVED, static_cast(E_ACCESSDENIED), DXGI_ERROR_SESSION_DISCONNECTED, S_OK }; /* These are the errors we expect from IDXGIOutputDuplication methods * due to a transition */ static HRESULT FrameInfoExpectedErrors[] = { DXGI_ERROR_DEVICE_REMOVED, DXGI_ERROR_ACCESS_LOST, S_OK }; static GstFlowReturn flow_return_from_hr (ID3D11Device * device, HRESULT hr, HRESULT * expected_errors = nullptr) { HRESULT translated_hr = hr; /* On an error check if the DX device is lost */ if (device) { HRESULT remove_reason = device->GetDeviceRemovedReason (); switch (remove_reason) { case DXGI_ERROR_DEVICE_REMOVED: case DXGI_ERROR_DEVICE_RESET: case static_cast(E_OUTOFMEMORY): /* Our device has been stopped due to an external event on the GPU so * map them all to device removed and continue processing the condition */ translated_hr = DXGI_ERROR_DEVICE_REMOVED; break; case S_OK: /* Device is not removed so use original error */ break; default: /* Device is removed but not a error we want to remap */ translated_hr = remove_reason; break; } } /* Check if this error was expected or not */ if (expected_errors) { HRESULT* rst = expected_errors; while (*rst != S_OK) { if (*rst == translated_hr) return GST_D3D12_SCREEN_CAPTURE_FLOW_EXPECTED_ERROR; rst++; } } return GST_FLOW_ERROR; } struct PtrInfo { PtrInfo () { LastTimeStamp.QuadPart = 0; position_info.Visible = FALSE; } void buildMonochrom () { width_ = shape_info.Width; height_ = shape_info.Height / 2; stride_ = width_ * 4; UINT pstride = 4; auto size = height_ * stride_; texture_.resize (size); xor_texture_.resize (size); const BYTE black[] = { 0, 0, 0, 0xff }; const BYTE white[] = { 0xff, 0xff, 0xff, 0xff }; const BYTE transparent[] = { 0, 0, 0, 0 }; for (UINT row = 0; row < height_; row++) { for (UINT col = 0; col < width_; col++) { auto src_pos = (row * shape_info.Pitch) + (col / 8); auto and_mask = (shape_buffer[src_pos] >> (7 - (col % 8))) & 0x1; auto xor_mask = (shape_buffer[src_pos + size] >> (7 - (col % 8))) & 0x1; auto dst_pos = (row * stride_) + (col * pstride); if (and_mask) { memcpy (texture_.data () + dst_pos, transparent, sizeof (transparent)); if (xor_mask) { memcpy (xor_texture_.data () + dst_pos, white, sizeof (white)); } else { memcpy (xor_texture_.data () + dst_pos, transparent, sizeof (transparent)); } } else { memcpy (texture_.data () + dst_pos, black, sizeof (black)); memcpy (xor_texture_.data () + dst_pos, transparent, sizeof (transparent)); } } } } void buildMaskedColor () { width_ = shape_info.Width; height_ = shape_info.Height; stride_ = shape_info.Pitch; auto size = height_ * stride_; UINT pstride = 4; texture_.resize (size); xor_texture_.resize (size); memcpy (texture_.data (), shape_buffer.data (), size); memcpy (xor_texture_.data (), shape_buffer.data (), size); for (UINT row = 0; row < height_; row++) { for (UINT col = 0; col < width_; col++) { auto mask_pos = row * stride_ + col * pstride + 3; texture_[mask_pos] = shape_buffer[mask_pos] ? 0 : 0xff; xor_texture_[mask_pos] = shape_buffer[mask_pos] ? 0xff : 0; } } } void BuildTexture () { texture_.clear (); xor_texture_.clear (); width_ = 0; height_ = 0; stride_ = 0; switch (shape_info.Type) { case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR: { width_ = shape_info.Width; height_ = shape_info.Height; stride_ = shape_info.Pitch; auto size = stride_ * height_; texture_.resize (size); memcpy (texture_.data (), shape_buffer.data (), size); break; } case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME: buildMonochrom (); break; case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR: buildMaskedColor (); break; default: GST_WARNING ("Unexpected shape type %u", shape_info.Type); break; } token_++; } std::vector shape_buffer; DXGI_OUTDUPL_POINTER_SHAPE_INFO shape_info; DXGI_OUTDUPL_POINTER_POSITION position_info; LARGE_INTEGER LastTimeStamp; UINT width_ = 0; UINT height_ = 0; UINT stride_ = 0; std::vector texture_; std::vector xor_texture_; UINT64 token_ = 0; }; struct VERTEX { XMFLOAT3 Pos; XMFLOAT2 TexCoord; }; class DesktopDupCtx { public: DesktopDupCtx () {} GstFlowReturn Init (HMONITOR monitor, HANDLE fence_handle) { ComPtr adapter; ComPtr output; ComPtr output1; HRESULT hr = gst_d3d12_screen_capture_find_output_for_monitor (monitor, &adapter, &output); if (FAILED (hr)) { GST_ERROR ("Couldn't get adapter and output for monitor"); return GST_FLOW_ERROR; } hr = output.As (&output1); if (FAILED (hr)) { GST_ERROR ("Couldn't get IDXGIOutput1 interface, hr 0x%x", (guint) hr); return GST_FLOW_ERROR; } HDESK hdesk = OpenInputDesktop (0, FALSE, GENERIC_ALL); if (hdesk) { if (!SetThreadDesktop (hdesk)) { GST_WARNING ("SetThreadDesktop() failed, error %lu", GetLastError()); } CloseDesktop (hdesk); } else { GST_WARNING ("OpenInputDesktop() failed, error %lu", GetLastError()); } D3D_FEATURE_LEVEL feature_level = D3D_FEATURE_LEVEL_11_1; ComPtr device; ComPtr context; hr = D3D11CreateDevice (adapter.Get (), D3D_DRIVER_TYPE_UNKNOWN, nullptr, D3D11_CREATE_DEVICE_BGRA_SUPPORT, &feature_level, 1, D3D11_SDK_VERSION, &device, nullptr, &context); if (FAILED (hr)) { GST_ERROR ("Couldn't create d3d11 device"); return GST_FLOW_ERROR; } hr = device.As (&device_); if (FAILED (hr)) { GST_ERROR ("ID3D11Device5 interface unavilable"); return GST_FLOW_ERROR; } hr = context.As (&context_); if (FAILED (hr)) { GST_ERROR ("ID3D11DeviceContext4 interface unavilable"); return GST_FLOW_ERROR; } /* FIXME: Use DuplicateOutput1 to avoid potentail color conversion */ hr = output1->DuplicateOutput(device_.Get(), &dupl_); if (FAILED (hr)) { if (hr == DXGI_ERROR_NOT_CURRENTLY_AVAILABLE) { GST_ERROR ("Hit the max allowed number of Desktop Duplication session"); return GST_FLOW_ERROR; } /* Seems to be one limitation of Desktop Duplication API design * See * https://docs.microsoft.com/en-US/troubleshoot/windows-client/shell-experience/error-when-dda-capable-app-is-against-gpu */ if (hr == DXGI_ERROR_UNSUPPORTED) { GST_WARNING ("IDXGIOutput1::DuplicateOutput returned " "DXGI_ERROR_UNSUPPORTED, possiblely application is run against a " "discrete GPU"); return GST_D3D12_SCREEN_CAPTURE_FLOW_UNSUPPORTED; } return flow_return_from_hr (device_.Get(), hr, CreateDuplicationExpectedErrors); } hr = device_->OpenSharedFence (fence_handle, IID_PPV_ARGS (&shared_fence_)); if (FAILED (hr)) { GST_ERROR ("Couldn't create fence"); return GST_FLOW_ERROR; } dupl_->GetDesc (&output_desc_); D3D11_TEXTURE2D_DESC desc = { }; desc.Width = output_desc_.ModeDesc.Width; desc.Height = output_desc_.ModeDesc.Height; desc.MipLevels = 1; desc.ArraySize = 1; desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM; desc.SampleDesc.Count = 1; desc.Usage = D3D11_USAGE_DEFAULT; desc.BindFlags = D3D11_BIND_RENDER_TARGET; hr = device_->CreateTexture2D (&desc, nullptr, &texture_); if (FAILED (hr)) { GST_ERROR ("Couldn't create texture"); return GST_FLOW_ERROR; } hr = device_->CreateRenderTargetView (texture_.Get (), nullptr, &rtv_); if (FAILED (hr)) { GST_ERROR ("Couldn't create render target view"); return GST_FLOW_ERROR; } viewport_.TopLeftX = 0; viewport_.TopLeftY = 0; viewport_.MinDepth = 0; viewport_.MaxDepth = 1; viewport_.Width = desc.Width; viewport_.Height = desc.Height; GstD3DShaderByteCode vs_code; GstD3DShaderByteCode ps_code; if (!gst_d3d_plugin_shader_get_vs_blob (GST_D3D_PLUGIN_VS_COORD, GST_D3D_SM_5_0, &vs_code)) { GST_ERROR ("Couldn't get vs bytecode"); return GST_FLOW_ERROR; } if (!gst_d3d_plugin_shader_get_ps_blob (GST_D3D_PLUGIN_PS_SAMPLE, GST_D3D_SM_5_0, &ps_code)) { GST_ERROR ("Couldn't get ps bytecode"); return GST_FLOW_ERROR; } D3D11_INPUT_ELEMENT_DESC input_desc[2] = { }; input_desc[0].SemanticName = "POSITION"; input_desc[0].SemanticIndex = 0; input_desc[0].Format = DXGI_FORMAT_R32G32B32_FLOAT; input_desc[0].InputSlot = 0; input_desc[0].AlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT; input_desc[0].InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA; input_desc[0].InstanceDataStepRate = 0; input_desc[1].SemanticName = "TEXCOORD"; input_desc[1].SemanticIndex = 0; input_desc[1].Format = DXGI_FORMAT_R32G32_FLOAT; input_desc[1].InputSlot = 0; input_desc[1].AlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT; input_desc[1].InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA; input_desc[1].InstanceDataStepRate = 0; hr = device_->CreateVertexShader (vs_code.byte_code, vs_code.byte_code_len, nullptr, &vs_); if (FAILED (hr)) { GST_ERROR ("Couldn't create vertex shader"); return GST_FLOW_ERROR; } hr = device_->CreateInputLayout (input_desc, 2, vs_code.byte_code, vs_code.byte_code_len, &layout_); if (FAILED (hr)) { GST_ERROR ("Couldn't create input layout"); return GST_FLOW_ERROR; } hr = device_->CreatePixelShader (ps_code.byte_code, ps_code.byte_code_len, nullptr, &ps_); if (FAILED (hr)) { GST_ERROR ("Couldn't create pixel shader"); return GST_FLOW_ERROR; } D3D11_SAMPLER_DESC sampler_desc = { }; sampler_desc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT; sampler_desc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP; sampler_desc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP; sampler_desc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP; sampler_desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS; sampler_desc.MaxLOD = D3D11_FLOAT32_MAX; hr = device_->CreateSamplerState (&sampler_desc, &sampler_); if (FAILED (hr)) { GST_ERROR ("Couldn't create sampler state"); return GST_FLOW_ERROR; } return GST_FLOW_OK; } void setMoveRect (DXGI_OUTDUPL_MOVE_RECT * move_rect, DXGI_MODE_ROTATION rotation, INT width, INT height, RECT * src, RECT * dst) { switch (rotation) { case DXGI_MODE_ROTATION_ROTATE90: src->left = height - (move_rect->SourcePoint.y + move_rect->DestinationRect.bottom - move_rect->DestinationRect.top); src->top = move_rect->SourcePoint.x; src->right = height - move_rect->SourcePoint.y; src->bottom = move_rect->SourcePoint.x + move_rect->DestinationRect.right - move_rect->DestinationRect.left; dst->left = height - move_rect->DestinationRect.bottom; dst->top = move_rect->DestinationRect.left; dst->right = height - move_rect->DestinationRect.top; dst->bottom = move_rect->DestinationRect.right; break; case DXGI_MODE_ROTATION_ROTATE180: src->left = width - (move_rect->SourcePoint.x + move_rect->DestinationRect.right - move_rect->DestinationRect.left); src->top = height - (move_rect->SourcePoint.y + move_rect->DestinationRect.bottom - move_rect->DestinationRect.top); src->right = width - move_rect->SourcePoint.x; src->bottom = height - move_rect->SourcePoint.y; dst->left = width - move_rect->DestinationRect.right; dst->top = height - move_rect->DestinationRect.bottom; dst->right = width - move_rect->DestinationRect.left; dst->bottom = height - move_rect->DestinationRect.top; break; case DXGI_MODE_ROTATION_ROTATE270: src->left = move_rect->SourcePoint.x; src->top = width - (move_rect->SourcePoint.x + move_rect->DestinationRect.right - move_rect->DestinationRect.left); src->right = move_rect->SourcePoint.y + move_rect->DestinationRect.bottom - move_rect->DestinationRect.top; src->bottom = width - move_rect->SourcePoint.x; dst->left = move_rect->DestinationRect.top; dst->top = width - move_rect->DestinationRect.right; dst->right = move_rect->DestinationRect.bottom; dst->bottom = width - move_rect->DestinationRect.left; break; case DXGI_MODE_ROTATION_UNSPECIFIED: case DXGI_MODE_ROTATION_IDENTITY: default: src->left = move_rect->SourcePoint.x; src->top = move_rect->SourcePoint.y; src->right = move_rect->SourcePoint.x + move_rect->DestinationRect.right - move_rect->DestinationRect.left; src->bottom = move_rect->SourcePoint.y + move_rect->DestinationRect.bottom - move_rect->DestinationRect.top; *dst = move_rect->DestinationRect; break; } } GstFlowReturn copyMoveRects (ID3D11Texture2D * src, DXGI_OUTDUPL_MOVE_RECT * rects, UINT move_count) { if (!move_texture_) { D3D11_TEXTURE2D_DESC desc; src->GetDesc (&desc); desc.BindFlags = 0; desc.MiscFlags = 0; auto hr = device_->CreateTexture2D (&desc, nullptr, &move_texture_); if (FAILED (hr)) { GST_ERROR ("Couldn't create move texture"); return GST_FLOW_ERROR; } } for (UINT i = 0; i < move_count; i++) { RECT src; RECT dst; setMoveRect (&rects[i], output_desc_.Rotation, output_desc_.ModeDesc.Width, output_desc_.ModeDesc.Height, &src, &dst); D3D11_BOX src_box = { }; src_box.front = 0; src_box.back = 1; src_box.left = src.left; src_box.top = src.top; src_box.right = src.right; src_box.bottom = src.bottom; context_->CopySubresourceRegion(move_texture_.Get(), 0, src.left, src.top, 0, texture_.Get (), 0, &src_box); context_->CopySubresourceRegion (texture_.Get (), 0, dst.left, dst.top, 0, move_texture_.Get (), 0, &src_box); } return GST_FLOW_OK; } void setDirtyVert (RECT * dirty, DXGI_MODE_ROTATION rotation, INT width, INT height, VERTEX * vert) { FLOAT center_x = width / 2.0; FLOAT center_y = height / 2.0; RECT dst = *dirty; switch (rotation) { case DXGI_MODE_ROTATION_ROTATE90: dst.left = width - dirty->bottom; dst.top = dirty->left; dst.right = width - dirty->top; dst.bottom = dirty->right; vert[0].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->bottom / static_cast(height)); vert[1].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->bottom / static_cast(height)); vert[2].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->top / static_cast(height)); vert[5].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->top / static_cast(height)); break; case DXGI_MODE_ROTATION_ROTATE180: dst.left = width - dirty->right; dst.top = height - dirty->bottom; dst.right = width - dirty->left; dst.bottom = height - dirty->top; vert[0].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->top / static_cast(height)); vert[1].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->bottom / static_cast(height)); vert[2].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->top / static_cast(height)); vert[5].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->bottom / static_cast(height)); break; case DXGI_MODE_ROTATION_ROTATE270: dst.left = dirty->top; dst.top = height - dirty->right; dst.right = dirty->bottom; dst.bottom = height - dirty->left; vert[0].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->top / static_cast(height)); vert[1].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->top / static_cast(height)); vert[2].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->bottom / static_cast(height)); vert[5].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->bottom / static_cast(height)); break; case DXGI_MODE_ROTATION_UNSPECIFIED: case DXGI_MODE_ROTATION_IDENTITY: default: vert[0].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->bottom / static_cast(height)); vert[1].TexCoord = XMFLOAT2(dirty->left / static_cast(width), dirty->top / static_cast(height)); vert[2].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->bottom / static_cast(height)); vert[5].TexCoord = XMFLOAT2(dirty->right / static_cast(width), dirty->top / static_cast(height)); break; } vert[0].Pos = XMFLOAT3( (dst.left - center_x) / center_x, -1 * (dst.bottom - center_y) / center_y, 0.0f); vert[1].Pos = XMFLOAT3( (dst.left - center_x) / center_x, -1 * (dst.top - center_y) / center_y, 0.0f); vert[2].Pos = XMFLOAT3( (dst.right - center_x) / center_x, -1 * (dst.bottom - center_y) / center_y, 0.0f); vert[3].Pos = vert[2].Pos; vert[4].Pos = vert[1].Pos; vert[5].Pos = XMFLOAT3( (dst.right - center_x) / center_x, -1 * (dst.top - center_y) / center_y, 0.0f); vert[3].TexCoord = vert[2].TexCoord; vert[4].TexCoord = vert[1].TexCoord; } GstFlowReturn copyDirtyRects (ID3D11Texture2D * src, RECT * dirty_rects, UINT dirty_count) { if (dirty_count == 0) return GST_FLOW_OK; ComPtr cur_srv; auto hr = device_->CreateShaderResourceView (src, nullptr, &cur_srv); if (FAILED (hr)) { GST_ERROR ("Couldn't create shader resource view"); return GST_FLOW_ERROR; } auto byte_needed = sizeof (VERTEX) * 6 * dirty_count; dirty_vertex_.resize (dirty_count * 6); VERTEX *vert_data = dirty_vertex_.data (); for (guint i = 0; i < dirty_count; i++, vert_data += 6) { setDirtyVert (&dirty_rects[i], output_desc_.Rotation, output_desc_.ModeDesc.Width, output_desc_.ModeDesc.Height, vert_data); } if (byte_needed > vertext_buf_size_) vertex_buf_ = nullptr; if (!vertex_buf_) { vertext_buf_size_ = byte_needed; D3D11_BUFFER_DESC buf_desc = { }; D3D11_SUBRESOURCE_DATA subresource = { }; buf_desc.Usage = D3D11_USAGE_DYNAMIC; buf_desc.ByteWidth = byte_needed; buf_desc.BindFlags = D3D11_BIND_VERTEX_BUFFER; buf_desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; subresource.pSysMem = dirty_vertex_.data (); subresource.SysMemPitch = byte_needed; hr = device_->CreateBuffer (&buf_desc, &subresource, &vertex_buf_); if (FAILED (hr)) { GST_ERROR ("Couldn't create vertex buffer"); return GST_FLOW_ERROR; } } else { D3D11_MAPPED_SUBRESOURCE mapped; hr = context_->Map (vertex_buf_.Get (), 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped); if (FAILED (hr)) { GST_ERROR ("Couldn't map vertex buffer"); return GST_FLOW_ERROR; } memcpy (mapped.pData, dirty_vertex_.data (), byte_needed); context_->Unmap (vertex_buf_.Get (), 0); } UINT stride = sizeof (VERTEX); UINT offset = 0; ID3D11Buffer *vert[] = { vertex_buf_.Get () }; context_->IASetVertexBuffers (0, 1, vert, &stride, &offset); context_->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); context_->IASetInputLayout(layout_.Get()); context_->VSSetShader(vs_.Get(), nullptr, 0); context_->PSSetShader(ps_.Get(), nullptr, 0); ID3D11ShaderResourceView *srv[] = { cur_srv.Get () }; context_->PSSetShaderResources(0, 1, srv); ID3D11SamplerState *sampler[] = { sampler_.Get () }; context_->PSSetSamplers(0, 1, sampler); context_->RSSetViewports (1, &viewport_); ID3D11RenderTargetView *rtv[] = { rtv_.Get () }; context_->OMSetRenderTargets(1, rtv, nullptr); context_->OMSetBlendState(nullptr, nullptr, 0xFFFFFFFF); context_->Draw (6 * dirty_count, 0); srv[0] = nullptr; rtv[0] = nullptr; context_->PSSetShaderResources(0, 1, srv); context_->OMSetRenderTargets(1, rtv, nullptr); return GST_FLOW_OK; } GstFlowReturn Execute (ID3D11Texture2D * dest, D3D11_BOX * src_box, UINT64 fence_val) { ComPtr resource; auto hr = dupl_->AcquireNextFrame(0, &frame_info_, &resource); if (hr != DXGI_ERROR_WAIT_TIMEOUT) { if (FAILED (hr)) { GST_WARNING ("AcquireNextFrame failed with 0x%x", (guint) hr); return flow_return_from_hr (device_.Get (), hr, FrameInfoExpectedErrors); } ComPtr cur_texture; resource.As (&cur_texture); if (!cur_texture) { GST_ERROR ("Couldn't get texture interface"); return GST_FLOW_ERROR; } metadata_buffer_.resize (frame_info_.TotalMetadataBufferSize); if (frame_info_.TotalMetadataBufferSize > 0) { UINT buf_size = frame_info_.TotalMetadataBufferSize; hr = dupl_->GetFrameMoveRects (buf_size, (DXGI_OUTDUPL_MOVE_RECT *) metadata_buffer_.data (), &buf_size); if (FAILED (hr)) { GST_ERROR ("Couldn't get move rect, hr: 0x%x", (guint) hr); return flow_return_from_hr (device_.Get (), hr, FrameInfoExpectedErrors); } auto move_count = buf_size / sizeof (DXGI_OUTDUPL_MOVE_RECT); if (move_count > 0) { auto ret = copyMoveRects (cur_texture.Get (), (DXGI_OUTDUPL_MOVE_RECT *) metadata_buffer_.data (), move_count); if (ret != GST_FLOW_OK) return ret; } auto dirty_rects = metadata_buffer_.data () + buf_size; buf_size = frame_info_.TotalMetadataBufferSize - buf_size; hr = dupl_->GetFrameDirtyRects (buf_size, (RECT *) dirty_rects, &buf_size); if (FAILED (hr)) { GST_ERROR ("Couldn't get dirty rect, hr: 0x%x", (guint) hr); return flow_return_from_hr (device_.Get (), hr, FrameInfoExpectedErrors); } auto dirty_count = buf_size / sizeof (RECT); if (dirty_count > 0) { auto ret = copyDirtyRects (cur_texture.Get (), (RECT *) dirty_rects, dirty_count); if (ret != GST_FLOW_OK) return ret; } } if (frame_info_.LastMouseUpdateTime.QuadPart != 0) { ptr_info_.position_info = frame_info_.PointerPosition; ptr_info_.LastTimeStamp = frame_info_.LastMouseUpdateTime; if (frame_info_.PointerShapeBufferSize > 0) { UINT buf_size; ptr_info_.shape_buffer.resize (frame_info_.PointerShapeBufferSize); hr = dupl_->GetFramePointerShape (frame_info_.PointerShapeBufferSize, (void *) ptr_info_.shape_buffer.data (), &buf_size, &ptr_info_.shape_info); if (FAILED (hr)) { return flow_return_from_hr(device_.Get (), hr, FrameInfoExpectedErrors); } ptr_info_.BuildTexture (); } } dupl_->ReleaseFrame (); } context_->CopySubresourceRegion (dest, 0, 0, 0, 0, texture_.Get (), 0, src_box); context_->Signal (shared_fence_.Get(), fence_val); return GST_FLOW_OK; } void GetSize (guint * width, guint * height) { *width = output_desc_.ModeDesc.Width; *height = output_desc_.ModeDesc.Height; } DXGI_OUTDUPL_DESC GetDesc () { return output_desc_; } const PtrInfo & GetPointerInfo () { return ptr_info_; } ID3D11Fence * GetFence () { return shared_fence_.Get (); } ID3D11Device * GetDevice () { return device_.Get (); } private: PtrInfo ptr_info_; DXGI_OUTDUPL_DESC output_desc_; DXGI_OUTDUPL_FRAME_INFO frame_info_; ComPtr dupl_; ComPtr device_; ComPtr context_; ComPtr shared_fence_; ComPtr texture_; ComPtr move_texture_; ComPtr rtv_; ComPtr sampler_; ComPtr ps_; ComPtr vs_; ComPtr layout_; ComPtr vertex_buf_; UINT vertext_buf_size_ = 0; D3D11_VIEWPORT viewport_ = { }; std::vector dirty_vertex_; /* frame metadata */ std::vector metadata_buffer_; }; struct GstD3D12DxgiCapturePrivate { GstD3D12DxgiCapturePrivate () { event_handle = CreateEventEx (nullptr, nullptr, 0, EVENT_ALL_ACCESS); fence_data_pool = gst_d3d12_fence_data_pool_new (); } ~GstD3D12DxgiCapturePrivate () { WaitGPU (); CloseHandle (event_handle); if (shared_fence_handle) CloseHandle (shared_fence_handle); gst_clear_buffer (&mouse_buf); gst_clear_buffer (&mouse_xor_buf); gst_clear_object (&ca_pool); gst_clear_object (&fence_data_pool); gst_clear_object (&mouse_blend); gst_clear_object (&mouse_xor_blend); gst_clear_object (&device); } void WaitGPU () { if (shared_fence) { auto completed = shared_fence->GetCompletedValue (); if (completed < fence_val) { auto hr = shared_fence->SetEventOnCompletion (fence_val, event_handle); if (SUCCEEDED (hr)) WaitForSingleObject (event_handle, INFINITE); } } } GstD3D12Device *device = nullptr; std::unique_ptr ctx; ComPtr output; GstD3D12CommandAllocatorPool *ca_pool = nullptr; GstD3D12FenceDataPool *fence_data_pool; ComPtr cl; ComPtr shared_fence; HANDLE shared_fence_handle = nullptr; GstBuffer *mouse_buf = nullptr; GstBuffer *mouse_xor_buf = nullptr; GstD3D12Converter *mouse_blend = nullptr; GstD3D12Converter *mouse_xor_blend = nullptr; HMONITOR monitor_handle = nullptr; RECT desktop_coordinates = { }; guint cached_width = 0; guint cached_height = 0; HANDLE event_handle; guint64 fence_val = 0; guint64 mouse_token = 0; std::mutex lock; }; /* *INDENT-ON* */ struct _GstD3D12DxgiCapture { GstD3D12ScreenCapture parent; GstD3D12Device *device; GstD3D12DxgiCapturePrivate *priv; }; static void gst_d3d12_dxgi_capture_finalize (GObject * object); static GstFlowReturn gst_d3d12_dxgi_capture_prepare (GstD3D12ScreenCapture * capture); static gboolean gst_d3d12_dxgi_capture_get_size (GstD3D12ScreenCapture * capture, guint * width, guint * height); #define gst_d3d12_dxgi_capture_parent_class parent_class G_DEFINE_TYPE (GstD3D12DxgiCapture, gst_d3d12_dxgi_capture, GST_TYPE_D3D12_SCREEN_CAPTURE); static void gst_d3d12_dxgi_capture_class_init (GstD3D12DxgiCaptureClass * klass) { auto object_class = G_OBJECT_CLASS (klass); auto capture_class = GST_D3D12_SCREEN_CAPTURE_CLASS (klass); object_class->finalize = gst_d3d12_dxgi_capture_finalize; capture_class->prepare = GST_DEBUG_FUNCPTR (gst_d3d12_dxgi_capture_prepare); capture_class->get_size = GST_DEBUG_FUNCPTR (gst_d3d12_dxgi_capture_get_size); } static void gst_d3d12_dxgi_capture_init (GstD3D12DxgiCapture * self) { self->priv = new GstD3D12DxgiCapturePrivate (); } static void gst_d3d12_dxgi_capture_finalize (GObject * object) { auto self = GST_D3D12_DXGI_CAPTURE (object); delete self->priv; gst_clear_object (&self->device); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_d3d12_dxgi_capture_weak_ref_notify (gpointer data, GstD3D12DxgiCapture * dupl) { std::lock_guard < std::mutex > lk (g_g_dupl_list_lock); g_dupl_list = g_list_remove (g_dupl_list, dupl); } static gboolean gst_d3d12_dxgi_capture_open (GstD3D12DxgiCapture * self, HMONITOR monitor_handle) { auto priv = self->priv; priv->monitor_handle = monitor_handle; ComPtr < IDXGIOutput > output; auto hr = gst_d3d12_screen_capture_find_output_for_monitor (monitor_handle, nullptr, &output); if (!gst_d3d12_result (hr, self->device)) { GST_WARNING_OBJECT (self, "Failed to find associated adapter for monitor %p", monitor_handle); return FALSE; } hr = output.As (&priv->output); if (!gst_d3d12_result (hr, self->device)) { GST_WARNING_OBJECT (self, "IDXGIOutput1 interface unavailable"); return FALSE; } DXGI_OUTPUT_DESC output_desc; hr = output->GetDesc (&output_desc); if (!gst_d3d12_result (hr, self->device)) { GST_WARNING_OBJECT (self, "Couldn't get output desc"); return FALSE; } /* DesktopCoordinates will not report actual texture size in case that * application is running without dpi-awareness. To get actual monitor size, * we need to use Win32 API... */ MONITORINFOEXW monitor_info; DEVMODEW dev_mode; monitor_info.cbSize = sizeof (MONITORINFOEXW); if (!GetMonitorInfoW (output_desc.Monitor, (LPMONITORINFO) & monitor_info)) { GST_WARNING_OBJECT (self, "Couldn't get monitor info"); return FALSE; } dev_mode.dmSize = sizeof (DEVMODEW); dev_mode.dmDriverExtra = sizeof (POINTL); dev_mode.dmFields = DM_POSITION; if (!EnumDisplaySettingsW (monitor_info.szDevice, ENUM_CURRENT_SETTINGS, &dev_mode)) { GST_WARNING_OBJECT (self, "Couldn't enumerate display settings"); return FALSE; } priv->desktop_coordinates.left = dev_mode.dmPosition.x; priv->desktop_coordinates.top = dev_mode.dmPosition.y; priv->desktop_coordinates.right = dev_mode.dmPosition.x + dev_mode.dmPelsWidth; priv->desktop_coordinates.bottom = dev_mode.dmPosition.y + dev_mode.dmPelsHeight; priv->cached_width = priv->desktop_coordinates.right - priv->desktop_coordinates.left; priv->cached_height = priv->desktop_coordinates.bottom - priv->desktop_coordinates.top; GST_DEBUG_OBJECT (self, "Desktop coordinates left:top:right:bottom = %ld:%ld:%ld:%ld (%dx%d)", priv->desktop_coordinates.left, priv->desktop_coordinates.top, priv->desktop_coordinates.right, priv->desktop_coordinates.bottom, priv->cached_width, priv->cached_height); auto device = gst_d3d12_device_get_device_handle (self->device); /* size will be updated later */ GstVideoInfo info; gst_video_info_set_format (&info, GST_VIDEO_FORMAT_BGRA, priv->cached_width, priv->cached_height); D3D12_BLEND_DESC blend_desc = CD3DX12_BLEND_DESC (D3D12_DEFAULT); blend_desc.RenderTarget[0].BlendEnable = TRUE; blend_desc.RenderTarget[0].LogicOpEnable = FALSE; blend_desc.RenderTarget[0].SrcBlend = D3D12_BLEND_SRC_ALPHA; blend_desc.RenderTarget[0].DestBlend = D3D12_BLEND_INV_SRC_ALPHA; blend_desc.RenderTarget[0].BlendOp = D3D12_BLEND_OP_ADD; blend_desc.RenderTarget[0].SrcBlendAlpha = D3D12_BLEND_ZERO; blend_desc.RenderTarget[0].DestBlendAlpha = D3D12_BLEND_ONE; blend_desc.RenderTarget[0].BlendOpAlpha = D3D12_BLEND_OP_ADD; blend_desc.RenderTarget[0].LogicOp = D3D12_LOGIC_OP_NOOP; blend_desc.RenderTarget[0].RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL; priv->mouse_blend = gst_d3d12_converter_new (self->device, &info, &info, &blend_desc, nullptr, nullptr); blend_desc.RenderTarget[0].SrcBlend = D3D12_BLEND_INV_DEST_COLOR; blend_desc.RenderTarget[0].DestBlend = D3D12_BLEND_INV_SRC_COLOR; priv->mouse_xor_blend = gst_d3d12_converter_new (self->device, &info, &info, &blend_desc, nullptr, nullptr); hr = device->CreateFence (0, D3D12_FENCE_FLAG_SHARED, IID_PPV_ARGS (&priv->shared_fence)); if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't create shared fence"); return FALSE; } hr = device->CreateSharedHandle (priv->shared_fence.Get (), nullptr, GENERIC_ALL, nullptr, &priv->shared_fence_handle); if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't create shared fence handle"); return FALSE; } priv->ca_pool = gst_d3d12_command_allocator_pool_new (device, D3D12_COMMAND_LIST_TYPE_DIRECT); priv->device = (GstD3D12Device *) gst_object_ref (self->device); return TRUE; } GstD3D12ScreenCapture * gst_d3d12_dxgi_capture_new (GstD3D12Device * device, HMONITOR monitor_handle) { GList *iter; g_return_val_if_fail (GST_IS_D3D12_DEVICE (device), nullptr); /* Check if we have dup object corresponding to monitor_handle, * and if there is already configured capture object, reuse it. * This is because of the limitation of desktop duplication API * (i.e., in a process, only one duplication object can exist). * See also * https://docs.microsoft.com/en-us/windows/win32/api/dxgi1_2/nf-dxgi1_2-idxgioutput1-duplicateoutput#remarks */ std::lock_guard < std::mutex > lk (g_g_dupl_list_lock); for (iter = g_dupl_list; iter; iter = g_list_next (iter)) { auto capture = (GstD3D12DxgiCapture *) iter->data; auto priv = capture->priv; if (priv->monitor_handle == monitor_handle) { GST_DEBUG ("Found configured desktop dup object for monitor handle %p", monitor_handle); gst_object_ref (capture); return GST_D3D12_SCREEN_CAPTURE_CAST (capture); } } auto self = (GstD3D12DxgiCapture *) g_object_new (GST_TYPE_D3D12_DXGI_CAPTURE, nullptr); self->device = (GstD3D12Device *) gst_object_ref (device); gst_object_ref_sink (self); if (!gst_d3d12_dxgi_capture_open (self, monitor_handle)) { gst_object_unref (self); return nullptr; } g_object_weak_ref (G_OBJECT (self), (GWeakNotify) gst_d3d12_dxgi_capture_weak_ref_notify, nullptr); g_dupl_list = g_list_append (g_dupl_list, self); return GST_D3D12_SCREEN_CAPTURE_CAST (self); } static GstFlowReturn gst_d3d12_dxgi_capture_prepare_unlocked (GstD3D12DxgiCapture * self) { auto priv = self->priv; if (priv->ctx) { GST_DEBUG_OBJECT (self, "Already prepared"); return GST_FLOW_OK; } auto ctx = std::make_unique < DesktopDupCtx > (); auto ret = ctx->Init (priv->monitor_handle, priv->shared_fence_handle); if (ret != GST_FLOW_OK) { GST_WARNING_OBJECT (self, "Couldn't prepare capturing, %sexpected failure", ret == GST_D3D12_SCREEN_CAPTURE_FLOW_EXPECTED_ERROR ? "" : "un"); return ret; } ctx->GetSize (&priv->cached_width, &priv->cached_height); priv->ctx = std::move (ctx); return GST_FLOW_OK; } static GstFlowReturn gst_d3d12_dxgi_capture_prepare (GstD3D12ScreenCapture * capture) { auto self = GST_D3D12_DXGI_CAPTURE (capture); auto priv = self->priv; std::lock_guard < std::mutex > lk (priv->lock); return gst_d3d12_dxgi_capture_prepare_unlocked (self); } static gboolean gst_d3d12_dxgi_capture_get_size_unlocked (GstD3D12DxgiCapture * self, guint * width, guint * height) { auto priv = self->priv; *width = 0; *height = 0; if (priv->ctx) priv->ctx->GetSize (&priv->cached_width, &priv->cached_height); *width = priv->cached_width; *height = priv->cached_height; return TRUE; } static gboolean gst_d3d12_dxgi_capture_get_size (GstD3D12ScreenCapture * capture, guint * width, guint * height) { auto self = GST_D3D12_DXGI_CAPTURE (capture); auto priv = self->priv; std::lock_guard < std::mutex > lk (priv->lock); return gst_d3d12_dxgi_capture_get_size_unlocked (self, width, height); } static gboolean gst_d3d12_dxgi_capture_draw_mouse (GstD3D12DxgiCapture * self, GstBuffer * buffer, const D3D12_BOX * crop_box) { auto priv = self->priv; const auto & info = priv->ctx->GetPointerInfo (); HRESULT hr; if (!info.position_info.Visible) return TRUE; if (!info.width_ || !info.height_) return TRUE; if (static_cast < INT > (info.position_info.Position.x + info.width_) < static_cast < INT > (crop_box->left) || static_cast < INT > (info.position_info.Position.x) > static_cast < INT > (crop_box->right) || static_cast < INT > (info.position_info.Position.y + info.height_) < static_cast < INT > (crop_box->top) || static_cast < INT > (info.position_info.Position.y) > static_cast < INT > (crop_box->bottom)) { return TRUE; } if (info.token_ != priv->mouse_token) { gst_clear_buffer (&priv->mouse_buf); gst_clear_buffer (&priv->mouse_xor_buf); priv->mouse_token = info.token_; } auto device = gst_d3d12_device_get_device_handle (self->device); if (!priv->mouse_buf) { ComPtr < ID3D12Resource > mouse_texture; ComPtr < ID3D12Resource > mouse_xor_texture; D3D12_HEAP_PROPERTIES heap_prop = CD3DX12_HEAP_PROPERTIES (D3D12_HEAP_TYPE_DEFAULT); D3D12_RESOURCE_DESC resource_desc = CD3DX12_RESOURCE_DESC::Tex2D (DXGI_FORMAT_B8G8R8A8_UNORM, info.width_, info.height_, 1, 1, 1, 0, D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS); hr = device->CreateCommittedResource (&heap_prop, D3D12_HEAP_FLAG_NONE, &resource_desc, D3D12_RESOURCE_STATE_COMMON, nullptr, IID_PPV_ARGS (&mouse_texture)); if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't create mouse texture"); return FALSE; } if (!info.xor_texture_.empty ()) { hr = device->CreateCommittedResource (&heap_prop, D3D12_HEAP_FLAG_NONE, &resource_desc, D3D12_RESOURCE_STATE_COMMON, nullptr, IID_PPV_ARGS (&mouse_xor_texture)); if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't create mouse texture"); return FALSE; } } priv->mouse_buf = gst_buffer_new (); auto mem = gst_d3d12_allocator_alloc_wrapped (nullptr, self->device, mouse_texture.Get (), 0, nullptr, nullptr); gst_buffer_append_memory (priv->mouse_buf, mem); if (mouse_xor_texture) { priv->mouse_xor_buf = gst_buffer_new (); auto mem = gst_d3d12_allocator_alloc_wrapped (nullptr, self->device, mouse_xor_texture.Get (), 0, nullptr, nullptr); gst_buffer_append_memory (priv->mouse_xor_buf, mem); } D3D12_PLACED_SUBRESOURCE_FOOTPRINT layout; UINT64 buffer_size; device->GetCopyableFootprints (&resource_desc, 0, 1, 0, &layout, nullptr, nullptr, &buffer_size); GstMapInfo map_info; gst_buffer_map (priv->mouse_buf, &map_info, GST_MAP_WRITE); auto src = info.texture_.data (); auto dst = (guint8 *) map_info.data; for (UINT i = 0; i < info.height_; i++) { memcpy (dst, src, info.width_ * 4); src += info.stride_; dst += layout.Footprint.RowPitch; } gst_buffer_unmap (priv->mouse_buf, &map_info); if (priv->mouse_xor_buf) { gst_buffer_map (priv->mouse_xor_buf, &map_info, GST_MAP_WRITE); auto src = info.xor_texture_.data (); auto dst = (guint8 *) map_info.data; for (UINT i = 0; i < info.height_; i++) { memcpy (dst, src, info.width_ * 4); src += info.stride_; dst += layout.Footprint.RowPitch; } gst_buffer_unmap (priv->mouse_xor_buf, &map_info); } } GstD3D12FenceData *fence_data = nullptr; gst_d3d12_fence_data_pool_acquire (priv->fence_data_pool, &fence_data); GstD3D12CommandAllocator *gst_ca = nullptr; if (!gst_d3d12_command_allocator_pool_acquire (priv->ca_pool, &gst_ca)) { GST_ERROR_OBJECT (self, "Couldn't acquire command allocator"); gst_d3d12_fence_data_unref (fence_data); return FALSE; } gst_d3d12_fence_data_add_notify_mini_object (fence_data, gst_ca); auto ca = gst_d3d12_command_allocator_get_handle (gst_ca); hr = ca->Reset (); if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't reset command allocator"); gst_d3d12_fence_data_unref (fence_data); return FALSE; } if (!priv->cl) { hr = device->CreateCommandList (0, D3D12_COMMAND_LIST_TYPE_DIRECT, ca, nullptr, IID_PPV_ARGS (&priv->cl)); } else { hr = priv->cl->Reset (ca, nullptr); } if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't reset command list"); gst_d3d12_fence_data_unref (fence_data); return FALSE; } auto cl = priv->cl; gint ptr_x = info.position_info.Position.x - crop_box->left; gint ptr_y = info.position_info.Position.y - crop_box->top; gint ptr_w = info.width_; gint ptr_h = info.height_; g_object_set (priv->mouse_blend, "src-x", 0, "src-y", 0, "src-width", ptr_w, "src-height", ptr_h, "dest-x", ptr_x, "dest-y", ptr_y, "dest-width", ptr_w, "dest-height", ptr_h, nullptr); auto cq = gst_d3d12_device_get_command_queue (priv->device, D3D12_COMMAND_LIST_TYPE_DIRECT); auto cq_handle = gst_d3d12_command_queue_get_handle (cq); if (!gst_d3d12_converter_convert_buffer (priv->mouse_blend, priv->mouse_buf, buffer, fence_data, cl.Get (), cq_handle)) { GST_ERROR_OBJECT (self, "Couldn't build mouse blend command"); gst_d3d12_fence_data_unref (fence_data); return FALSE; } if (priv->mouse_xor_buf) { g_object_set (priv->mouse_xor_blend, "src-x", 0, "src-y", 0, "src-width", ptr_w, "src-height", ptr_h, "dest-x", ptr_x, "dest-y", ptr_y, "dest-width", ptr_w, "dest-height", ptr_h, nullptr); if (!gst_d3d12_converter_convert_buffer (priv->mouse_xor_blend, priv->mouse_xor_buf, buffer, fence_data, cl.Get (), nullptr)) { GST_ERROR_OBJECT (self, "Couldn't build mouse blend command"); gst_d3d12_fence_data_unref (fence_data); return FALSE; } } hr = cl->Close (); if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't close command list"); gst_d3d12_fence_data_unref (fence_data); return FALSE; } ID3D12CommandList *cmd_list[] = { cl.Get () }; guint64 fence_val = 0; hr = gst_d3d12_command_queue_execute_command_lists (cq, 1, cmd_list, &fence_val); if (!gst_d3d12_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't execute command list"); gst_d3d12_fence_data_unref (fence_data); return FALSE; } gst_d3d12_command_queue_set_notify (cq, fence_val, fence_data, (GDestroyNotify) gst_d3d12_fence_data_unref); gst_d3d12_buffer_after_write (buffer, fence_val); return TRUE; } GstFlowReturn gst_d3d12_dxgi_capture_do_capture (GstD3D12DxgiCapture * capture, GstBuffer * buffer, const D3D12_BOX * crop_box, gboolean draw_mouse) { auto self = GST_D3D12_DXGI_CAPTURE (capture); auto priv = self->priv; GstFlowReturn ret = GST_FLOW_OK; guint width, height; std::lock_guard < std::mutex > lk (priv->lock); if (!priv->ctx) { ret = gst_d3d12_dxgi_capture_prepare_unlocked (self); if (ret != GST_FLOW_OK) { GST_WARNING_OBJECT (self, "We are not prepared"); return ret; } } gst_d3d12_dxgi_capture_get_size_unlocked (self, &width, &height); if (crop_box->left > width || crop_box->right > width || crop_box->top > height || crop_box->bottom > height) { GST_INFO_OBJECT (self, "Capture area (%u, %u, %u, %u) doesn't fit into screen size %ux%u", crop_box->left, crop_box->right, crop_box->top, crop_box->bottom, width, height); return GST_D3D12_SCREEN_CAPTURE_FLOW_SIZE_CHANGED; } auto dmem = (GstD3D12Memory *) gst_buffer_peek_memory (buffer, 0); auto texture = gst_d3d12_memory_get_d3d11_texture (dmem, priv->ctx->GetDevice ()); if (!texture) { GST_ERROR_OBJECT (self, "Couldn't get d3d11 texture"); return GST_FLOW_ERROR; } priv->fence_val++; ret = priv->ctx->Execute (texture, (D3D11_BOX *) crop_box, priv->fence_val); if (ret != GST_FLOW_OK) { priv->WaitGPU (); priv->ctx = nullptr; if (ret == GST_D3D12_SCREEN_CAPTURE_FLOW_EXPECTED_ERROR) { GST_WARNING_OBJECT (self, "Couldn't capture frame, but expected failure"); } else { GST_ERROR_OBJECT (self, "Unexpected failure during capture"); } return ret; } gst_d3d12_memory_set_external_fence (dmem, priv->shared_fence.Get (), priv->fence_val); if (draw_mouse && !gst_d3d12_dxgi_capture_draw_mouse (self, buffer, crop_box)) { priv->WaitGPU (); return GST_FLOW_ERROR; } return GST_FLOW_OK; }