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gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12dxgicapture.cpp
Seungha Yang 2a14793ee1 d3d12converter: Add support for GPU-side external fence waiting 
Ideally, GPU waiting should be scheduled just before executing command list.
But handling the case outside of converter is a bit complicated.
Under an assumption that constructed command list will be executed
immediately, schedules GPU-side waiting inside of conversion method
to simplify the flow.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6749>
2024-04-28 12:49:07 +00:00

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/* GStreamer
* Copyright (C) 2024 Seungha Yang <seungha@centricular.com>
*
* 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 <d3d11_4.h>
#include <directx/d3dx12.h>
#include <string.h>
#include <mutex>
#include <vector>
#include <memory>
#include <future>
#include <wrl.h>
#include <gst/d3dshader/gstd3dshader.h>
#define _XM_NO_INTRINSICS_
#include <DirectXMath.h>
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<HRESULT>(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<HRESULT>(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<BYTE> 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<BYTE> texture_;
std::vector<BYTE> xor_texture_;
UINT64 token_ = 0;
};
struct VERTEX
{
XMFLOAT3 Pos;
XMFLOAT2 TexCoord;
};
class DesktopDupCtx
{
public:
DesktopDupCtx () {}
GstFlowReturn Init (HMONITOR monitor, HANDLE fence_handle)
{
ComPtr<IDXGIAdapter1> adapter;
ComPtr<IDXGIOutput> output;
ComPtr<IDXGIOutput1> 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<ID3D11Device> device;
ComPtr<ID3D11DeviceContext> 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<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(height));
vert[1].TexCoord =
XMFLOAT2(dirty->left / static_cast<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(height));
vert[2].TexCoord =
XMFLOAT2(dirty->right / static_cast<FLOAT>(width),
dirty->top / static_cast<FLOAT>(height));
vert[5].TexCoord =
XMFLOAT2(dirty->left / static_cast<FLOAT>(width),
dirty->top / static_cast<FLOAT>(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<FLOAT>(width),
dirty->top / static_cast<FLOAT>(height));
vert[1].TexCoord =
XMFLOAT2(dirty->right / static_cast<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(height));
vert[2].TexCoord =
XMFLOAT2(dirty->left / static_cast<FLOAT>(width),
dirty->top / static_cast<FLOAT>(height));
vert[5].TexCoord =
XMFLOAT2(dirty->left / static_cast<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(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<FLOAT>(width),
dirty->top / static_cast<FLOAT>(height));
vert[1].TexCoord =
XMFLOAT2(dirty->right / static_cast<FLOAT>(width),
dirty->top / static_cast<FLOAT>(height));
vert[2].TexCoord =
XMFLOAT2(dirty->left / static_cast<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(height));
vert[5].TexCoord =
XMFLOAT2(dirty->right / static_cast<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(height));
break;
case DXGI_MODE_ROTATION_UNSPECIFIED:
case DXGI_MODE_ROTATION_IDENTITY:
default:
vert[0].TexCoord =
XMFLOAT2(dirty->left / static_cast<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(height));
vert[1].TexCoord =
XMFLOAT2(dirty->left / static_cast<FLOAT>(width),
dirty->top / static_cast<FLOAT>(height));
vert[2].TexCoord =
XMFLOAT2(dirty->right / static_cast<FLOAT>(width),
dirty->bottom / static_cast<FLOAT>(height));
vert[5].TexCoord =
XMFLOAT2(dirty->right / static_cast<FLOAT>(width),
dirty->top / static_cast<FLOAT>(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<ID3D11ShaderResourceView> 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<IDXGIResource> 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<ID3D11Texture2D> 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<IDXGIOutputDuplication> dupl_;
ComPtr<ID3D11Device5> device_;
ComPtr<ID3D11DeviceContext4> context_;
ComPtr<ID3D11Fence> shared_fence_;
ComPtr<ID3D11Texture2D> texture_;
ComPtr<ID3D11Texture2D> move_texture_;
ComPtr<ID3D11RenderTargetView> rtv_;
ComPtr<ID3D11SamplerState> sampler_;
ComPtr<ID3D11PixelShader> ps_;
ComPtr<ID3D11VertexShader> vs_;
ComPtr<ID3D11InputLayout> layout_;
ComPtr<ID3D11Buffer> vertex_buf_;
UINT vertext_buf_size_ = 0;
D3D11_VIEWPORT viewport_ = { };
std::vector<VERTEX> dirty_vertex_;
/* frame metadata */
std::vector<BYTE> 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<DesktopDupCtx> ctx;
ComPtr<IDXGIOutput1> output;
GstD3D12CommandAllocatorPool *ca_pool = nullptr;
GstD3D12FenceDataPool *fence_data_pool;
ComPtr<ID3D12GraphicsCommandList> cl;
ComPtr<ID3D12Fence> 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;
}
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