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gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12dxgicapture.cpp
Seungha Yang abeccdd6bc d3d12: Make resource getter methods consistent 
Returns COM pointer directly everywhere

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6494>
2024-04-01 10:37:49 +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_3.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 MoveRectData
{
RECT src_rect;
RECT dst_rect;
D3D12_BOX box;
};
struct VERTEX
{
XMFLOAT3 Pos;
XMFLOAT2 TexCoord;
};
class DesktopDupCtx
{
public:
DesktopDupCtx () {}
GstFlowReturn Init (HMONITOR monitor)
{
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());
}
static const D3D_FEATURE_LEVEL feature_levels[] = {
D3D_FEATURE_LEVEL_11_1,
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
};
hr = D3D11CreateDevice (adapter.Get (), D3D_DRIVER_TYPE_UNKNOWN, nullptr,
D3D11_CREATE_DEVICE_BGRA_SUPPORT, feature_levels,
G_N_ELEMENTS (feature_levels), D3D11_SDK_VERSION, &device_, nullptr,
nullptr);
if (FAILED (hr)) {
hr = D3D11CreateDevice (adapter.Get (), D3D_DRIVER_TYPE_UNKNOWN, nullptr,
D3D11_CREATE_DEVICE_BGRA_SUPPORT, &feature_levels[1],
G_N_ELEMENTS (feature_levels) - 1, D3D11_SDK_VERSION, &device_,
nullptr, nullptr);
}
if (FAILED (hr)) {
GST_ERROR ("Couldn't create d3d11 device");
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);
}
dupl_->GetDesc (&output_desc_);
return GST_FLOW_OK;
}
void ReleaseFrame ()
{
if (acquired_frame_) {
acquired_frame_ = nullptr;
dupl_->ReleaseFrame ();
}
}
GstFlowReturn AcquireNextFrame (IDXGIResource ** resource)
{
HRESULT hr;
move_rect_.clear ();
dirty_rect_.clear ();
dirty_vertex_.clear ();
if (acquired_frame_) {
acquired_frame_ = nullptr;
dupl_->ReleaseFrame ();
}
hr = dupl_->AcquireNextFrame(0, &frame_info_, &acquired_frame_);
if (hr == DXGI_ERROR_WAIT_TIMEOUT)
return GST_FLOW_OK;
if (FAILED (hr)) {
GST_WARNING ("AcquireNextFrame failed with 0x%x", (guint) hr);
return flow_return_from_hr (device_.Get (), hr, FrameInfoExpectedErrors);
}
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);
buildMoveRects (move_count);
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);
buildDirtyVertex ((RECT *) dirty_rects, dirty_count);
}
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 ();
}
}
*resource = acquired_frame_.Get ();
(*resource)->AddRef ();
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_;
}
UINT GetMoveCount ()
{
return move_rect_.size ();
}
const std::vector<MoveRectData> & GetMoveRects ()
{
return move_rect_;
}
UINT GetDirtyCount ()
{
return dirty_rect_.size ();
}
const std::vector<RECT> & GetDirtyRects ()
{
return dirty_rect_;
}
const std::vector<VERTEX> & GetDirtyVertex ()
{
return dirty_vertex_;
}
const PtrInfo & GetPointerInfo ()
{
return ptr_info_;
}
private:
void buildMoveRects (UINT move_count)
{
INT width = (INT) output_desc_.ModeDesc.Width;
INT height = (INT) output_desc_.ModeDesc.Height;
for (UINT i = 0; i < move_count; i++) {
DXGI_OUTDUPL_MOVE_RECT *move_rect =
((DXGI_OUTDUPL_MOVE_RECT *) metadata_buffer_.data ()) + i;
RECT src_rect;
RECT dst_rect;
switch (output_desc_.Rotation) {
case DXGI_MODE_ROTATION_UNSPECIFIED:
case DXGI_MODE_ROTATION_IDENTITY:
src_rect.left = move_rect->SourcePoint.x;
src_rect.top = move_rect->SourcePoint.y;
src_rect.right = move_rect->SourcePoint.x +
move_rect->DestinationRect.right - move_rect->DestinationRect.left;
src_rect.bottom = move_rect->SourcePoint.y +
move_rect->DestinationRect.bottom - move_rect->DestinationRect.top;
dst_rect = move_rect->DestinationRect;
break;
case DXGI_MODE_ROTATION_ROTATE90:
src_rect.left = height - (move_rect->SourcePoint.y +
move_rect->DestinationRect.bottom - move_rect->DestinationRect.top);
src_rect.top = move_rect->SourcePoint.x;
src_rect.right = height - move_rect->SourcePoint.y;
src_rect.bottom = move_rect->SourcePoint.x +
move_rect->DestinationRect.right - move_rect->DestinationRect.left;
dst_rect.left = height - move_rect->DestinationRect.bottom;
dst_rect.top = move_rect->DestinationRect.left;
dst_rect.right = height - move_rect->DestinationRect.top;
dst_rect.bottom = move_rect->DestinationRect.right;
break;
case DXGI_MODE_ROTATION_ROTATE180:
src_rect.left = width - (move_rect->SourcePoint.x +
move_rect->DestinationRect.right - move_rect->DestinationRect.left);
src_rect.top = height - (move_rect->SourcePoint.y +
move_rect->DestinationRect.bottom - move_rect->DestinationRect.top);
src_rect.right = width - move_rect->SourcePoint.x;
src_rect.bottom = height - move_rect->SourcePoint.y;
dst_rect.left = width - move_rect->DestinationRect.right;
dst_rect.top = height - move_rect->DestinationRect.bottom;
dst_rect.right = width - move_rect->DestinationRect.left;
dst_rect.bottom = height - move_rect->DestinationRect.top;
break;
case DXGI_MODE_ROTATION_ROTATE270:
src_rect.left = move_rect->SourcePoint.x;
src_rect.top = width - (move_rect->SourcePoint.x +
move_rect->DestinationRect.right - move_rect->DestinationRect.left);
src_rect.right = move_rect->SourcePoint.y +
move_rect->DestinationRect.bottom - move_rect->DestinationRect.top;
src_rect.bottom = width - move_rect->SourcePoint.x;
dst_rect.left = move_rect->DestinationRect.top;
dst_rect.top = width - move_rect->DestinationRect.right;
dst_rect.right = move_rect->DestinationRect.bottom;
dst_rect.bottom = width - move_rect->DestinationRect.left;
break;
default:
continue;
}
MoveRectData rect_data = { };
rect_data.src_rect = src_rect;
rect_data.dst_rect = dst_rect;
rect_data.box.left = src_rect.left;
rect_data.box.top = src_rect.top;
rect_data.box.right = src_rect.right;
rect_data.box.bottom = src_rect.bottom;
rect_data.box.front = 0;
rect_data.box.back = 1;
move_rect_.push_back (rect_data);
}
}
void buildDirtyVertex (RECT * rects, UINT num_rect)
{
if (num_rect == 0)
return;
dirty_vertex_.resize (num_rect * 6);
FLOAT width = output_desc_.ModeDesc.Width;
FLOAT height = output_desc_.ModeDesc.Height;
FLOAT center_x = width / 2.0f;
FLOAT center_y = height / 2.0f;
for (UINT i = 0; i < num_rect; i++) {
RECT dirty = rects[i];
RECT dest_dirty = dirty;
UINT base = i * 6;
dirty_rect_.push_back (dirty);
switch (output_desc_.Rotation) {
case DXGI_MODE_ROTATION_ROTATE90:
dest_dirty.left = width - dirty.bottom;
dest_dirty.top = dirty.left;
dest_dirty.right = width - dirty.top;
dest_dirty.bottom = dirty.right;
dirty_vertex_[base].TexCoord = XMFLOAT2 (
dirty.right / width, dirty.bottom / height);
dirty_vertex_[base + 1].TexCoord = XMFLOAT2 (
dirty.left / width, dirty.bottom / height);
dirty_vertex_[base + 2].TexCoord = XMFLOAT2 (
dirty.right / width, dirty.top / height);
dirty_vertex_[base + 5].TexCoord = XMFLOAT2(
dirty.left / width, dirty.top / height);
break;
case DXGI_MODE_ROTATION_ROTATE180:
dest_dirty.left = width - dirty.right;
dest_dirty.top = height - dirty.bottom;
dest_dirty.right = width - dirty.left;
dest_dirty.bottom = height - dirty.top;
dirty_vertex_[base].TexCoord = XMFLOAT2(
dirty.right / width, dirty.top / height);
dirty_vertex_[base + 1].TexCoord = XMFLOAT2 (
dirty.right / width, dirty.bottom / height);
dirty_vertex_[base + 2].TexCoord = XMFLOAT2 (
dirty.left / width, dirty.top / height);
dirty_vertex_[base + 5].TexCoord = XMFLOAT2 (
dirty.left / width, dirty.bottom / height);
break;
case DXGI_MODE_ROTATION_ROTATE270:
dest_dirty.left = dirty.top;
dest_dirty.top = height - dirty.right;
dest_dirty.right = dirty.bottom;
dest_dirty.bottom = height - dirty.left;
dirty_vertex_[base].TexCoord = XMFLOAT2 (
dirty.left / width, dirty.top / height);
dirty_vertex_[base + 1].TexCoord = XMFLOAT2 (
dirty.right / width, dirty.top / height);
dirty_vertex_[base + 2].TexCoord = XMFLOAT2 (
dirty.left / width, dirty.bottom / height);
dirty_vertex_[base + 5].TexCoord = XMFLOAT2 (
dirty.right / width, dirty.bottom / height);
break;
case DXGI_MODE_ROTATION_UNSPECIFIED:
case DXGI_MODE_ROTATION_IDENTITY:
default:
dirty_vertex_[base].TexCoord = XMFLOAT2 (
dirty.left / width, dirty.bottom / height);
dirty_vertex_[base + 1].TexCoord = XMFLOAT2 (
dirty.left / width, dirty.top / height);
dirty_vertex_[base + 2].TexCoord = XMFLOAT2 (
dirty.right / width, dirty.bottom / height);
dirty_vertex_[base + 5].TexCoord = XMFLOAT2 (
dirty.right / width, dirty.top / height);
break;
}
/* Set positions */
dirty_vertex_[base].Pos = XMFLOAT3 (
(dest_dirty.left - center_x) / center_x,
-1 * (dest_dirty.bottom - center_y) / center_y, 0.0f);
dirty_vertex_[base + 1].Pos = XMFLOAT3 (
(dest_dirty.left - center_x) / center_x,
-1 * (dest_dirty.top - center_y) / center_y, 0.0f);
dirty_vertex_[base + 2].Pos = XMFLOAT3 (
(dest_dirty.right - center_x) / center_x,
-1 * (dest_dirty.bottom - center_y) / center_y, 0.0f);
dirty_vertex_[base + 3].Pos = dirty_vertex_[base + 2].Pos;
dirty_vertex_[base + 4].Pos = dirty_vertex_[base + 1].Pos;
dirty_vertex_[base + 5].Pos = XMFLOAT3 (
(dest_dirty.right - center_x) / center_x,
-1 * (dest_dirty.top - center_y) / center_y, 0.0f);
dirty_vertex_[base + 3].TexCoord = dirty_vertex_[base + 2].TexCoord;
dirty_vertex_[base + 4].TexCoord = dirty_vertex_[base + 1].TexCoord;
}
}
private:
PtrInfo ptr_info_;
DXGI_OUTDUPL_DESC output_desc_;
DXGI_OUTDUPL_FRAME_INFO frame_info_;
ComPtr<IDXGIOutputDuplication> dupl_;
ComPtr<ID3D11Device> device_;
ComPtr<IDXGIResource> acquired_frame_;
std::vector<MoveRectData> move_rect_;
std::vector<VERTEX> dirty_vertex_;
std::vector<RECT> dirty_rect_;
/* 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 ()
{
if (device) {
auto fence_to_wait = MAX (fence_val, mouse_fence_val);
gst_d3d12_device_fence_wait (device, D3D12_COMMAND_LIST_TYPE_DIRECT,
fence_to_wait, event_handle);
}
CloseHandle (event_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);
}
GstD3D12Device *device = nullptr;
std::unique_ptr<DesktopDupCtx> ctx;
ComPtr<IDXGIOutput1> output;
ComPtr<IDXGIResource> last_resource;
ComPtr<ID3D12Resource> shared_resource;
ComPtr<ID3D12Resource> move_frame;
ComPtr<ID3D12Resource> processed_frame;
ComPtr<ID3D12RootSignature> rs;
ComPtr<ID3D12PipelineState> pso;
GstD3D12CommandAllocatorPool *ca_pool = nullptr;
GstD3D12FenceDataPool *fence_data_pool;
GstD3D12FenceData *mouse_fence_data = nullptr;
ComPtr<ID3D12GraphicsCommandList> cl;
ComPtr<ID3D12GraphicsCommandList> mouse_cl;
ComPtr<ID3D12DescriptorHeap> srv_heap;
ComPtr<ID3D12DescriptorHeap> rtv_heap;
ComPtr<ID3D12Resource> dirty_vertex_buf;
UINT dirty_vertex_size = 0;
GstBuffer *mouse_buf = nullptr;
GstBuffer *mouse_xor_buf = nullptr;
D3D12_VIEWPORT viewport;
D3D12_RECT scissor_rect;
D3D12_RESOURCE_STATES resource_state = D3D12_RESOURCE_STATE_COMMON;
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_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)
{
const D3D12_ROOT_SIGNATURE_FLAGS rs_flags =
D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_AMPLIFICATION_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_MESH_SHADER_ROOT_ACCESS;
const D3D12_STATIC_SAMPLER_DESC static_sampler_desc = {
D3D12_FILTER_MIN_MAG_LINEAR_MIP_POINT,
D3D12_TEXTURE_ADDRESS_MODE_CLAMP,
D3D12_TEXTURE_ADDRESS_MODE_CLAMP,
D3D12_TEXTURE_ADDRESS_MODE_CLAMP,
0,
1,
D3D12_COMPARISON_FUNC_ALWAYS,
D3D12_STATIC_BORDER_COLOR_OPAQUE_BLACK,
0,
D3D12_FLOAT32_MAX,
0,
0,
D3D12_SHADER_VISIBILITY_PIXEL
};
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);
CD3DX12_ROOT_PARAMETER param;
D3D12_DESCRIPTOR_RANGE range;
std::vector < D3D12_ROOT_PARAMETER > param_list;
range = CD3DX12_DESCRIPTOR_RANGE (D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 0);
param.InitAsDescriptorTable (1, &range, D3D12_SHADER_VISIBILITY_PIXEL);
param_list.push_back (param);
D3D12_VERSIONED_ROOT_SIGNATURE_DESC rs_desc = { };
CD3DX12_VERSIONED_ROOT_SIGNATURE_DESC::Init_1_0 (rs_desc,
param_list.size (), param_list.data (),
1, &static_sampler_desc, rs_flags);
ComPtr < ID3DBlob > rs_blob;
ComPtr < ID3DBlob > error_blob;
hr = D3DX12SerializeVersionedRootSignature (&rs_desc,
D3D_ROOT_SIGNATURE_VERSION_1_1, &rs_blob, &error_blob);
if (!gst_d3d12_result (hr, self->device)) {
const gchar *error_msg = nullptr;
if (error_blob)
error_msg = (const gchar *) error_blob->GetBufferPointer ();
GST_ERROR_OBJECT (self, "Couldn't serialize root signature, error: %s",
GST_STR_NULL (error_msg));
return FALSE;
}
hr = device->CreateRootSignature (0, rs_blob->GetBufferPointer (),
rs_blob->GetBufferSize (), IID_PPV_ARGS (&priv->rs));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create root signature");
return FALSE;
}
D3D12_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 = D3D12_APPEND_ALIGNED_ELEMENT;
input_desc[0].InputSlotClass = D3D12_INPUT_CLASSIFICATION_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 = D3D12_APPEND_ALIGNED_ELEMENT;
input_desc[1].InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA;
input_desc[1].InstanceDataStepRate = 0;
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_OBJECT (self, "Couldn't get vs bytecode");
return FALSE;
}
if (!gst_d3d_plugin_shader_get_ps_blob (GST_D3D_PLUGIN_PS_SAMPLE,
GST_D3D_SM_5_0, &ps_code)) {
GST_ERROR_OBJECT (self, "Couldn't get ps bytecode");
return FALSE;
}
D3D12_GRAPHICS_PIPELINE_STATE_DESC pso_desc = { };
pso_desc.pRootSignature = priv->rs.Get ();
pso_desc.VS.BytecodeLength = vs_code.byte_code_len;
pso_desc.VS.pShaderBytecode = vs_code.byte_code;
pso_desc.PS.BytecodeLength = ps_code.byte_code_len;
pso_desc.PS.pShaderBytecode = ps_code.byte_code;
pso_desc.BlendState = CD3DX12_BLEND_DESC (D3D12_DEFAULT);
pso_desc.SampleMask = UINT_MAX;
pso_desc.RasterizerState = CD3DX12_RASTERIZER_DESC (D3D12_DEFAULT);
pso_desc.RasterizerState.CullMode = D3D12_CULL_MODE_NONE;
pso_desc.DepthStencilState.DepthEnable = FALSE;
pso_desc.DepthStencilState.StencilEnable = FALSE;
pso_desc.InputLayout.pInputElementDescs = input_desc;
pso_desc.InputLayout.NumElements = G_N_ELEMENTS (input_desc);
pso_desc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
pso_desc.NumRenderTargets = 1;
pso_desc.RTVFormats[0] = DXGI_FORMAT_B8G8R8A8_UNORM;
pso_desc.SampleDesc.Count = 1;
hr = device->CreateGraphicsPipelineState (&pso_desc,
IID_PPV_ARGS (&priv->pso));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create pso");
return FALSE;
}
/* 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);
D3D12_DESCRIPTOR_HEAP_DESC heap_desc = { };
heap_desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
heap_desc.NumDescriptors = 1;
heap_desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
hr = device->CreateDescriptorHeap (&heap_desc,
IID_PPV_ARGS (&priv->srv_heap));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create descriptor heap");
return FALSE;
}
heap_desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
heap_desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
hr = device->CreateDescriptorHeap (&heap_desc,
IID_PPV_ARGS (&priv->rtv_heap));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create descriptor heap");
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);
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->viewport.TopLeftX = 0;
priv->viewport.TopLeftY = 0;
priv->viewport.Width = priv->cached_width;
priv->viewport.Height = priv->cached_height;
priv->viewport.MinDepth = 0;
priv->viewport.MaxDepth = 1;
priv->scissor_rect.left = 0;
priv->scissor_rect.top = 0;
priv->scissor_rect.right = priv->cached_width;
priv->scissor_rect.bottom = priv->cached_height;
ComPtr < ID3D12Resource > processed_frame;
D3D12_CLEAR_VALUE clear_value = { };
clear_value.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
clear_value.Color[0] = 0.0f;
clear_value.Color[1] = 0.0f;
clear_value.Color[2] = 0.0f;
clear_value.Color[3] = 1.0f;
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,
priv->cached_width, priv->cached_height, 1, 1, 1, 0,
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET |
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS);
auto device = gst_d3d12_device_get_device_handle (self->device);
auto hr = device->CreateCommittedResource (&heap_prop, D3D12_HEAP_FLAG_NONE,
&resource_desc, D3D12_RESOURCE_STATE_COMMON, &clear_value,
IID_PPV_ARGS (&processed_frame));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create texture");
return GST_FLOW_ERROR;
}
D3D12_RENDER_TARGET_VIEW_DESC rtv_desc = { };
rtv_desc.ViewDimension = D3D12_RTV_DIMENSION_TEXTURE2D;
rtv_desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
rtv_desc.Texture2D.PlaneSlice = 0;
device->CreateRenderTargetView (processed_frame.Get (), &rtv_desc,
GetCPUDescriptorHandleForHeapStart (priv->rtv_heap));
priv->ctx = std::move (ctx);
priv->processed_frame = processed_frame;
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_copy_move_rects (GstD3D12DxgiCapture * self,
ID3D12GraphicsCommandList * cl)
{
auto priv = self->priv;
HRESULT hr;
auto device = gst_d3d12_device_get_device_handle (self->device);
GST_LOG_OBJECT (self, "Rendering move rects");
std::vector < D3D12_RESOURCE_BARRIER > barriers;
if (!priv->move_frame) {
D3D12_HEAP_PROPERTIES heap_prop =
CD3DX12_HEAP_PROPERTIES (D3D12_HEAP_TYPE_DEFAULT);
D3D12_RESOURCE_DESC resource_desc = GetDesc (priv->processed_frame);
resource_desc.Flags = D3D12_RESOURCE_FLAG_NONE;
hr = device->CreateCommittedResource (&heap_prop,
D3D12_HEAP_FLAG_NONE, &resource_desc, D3D12_RESOURCE_STATE_COPY_DEST,
nullptr, IID_PPV_ARGS (&priv->move_frame));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create move texture");
return FALSE;
}
}
D3D12_TEXTURE_COPY_LOCATION move_frame =
CD3DX12_TEXTURE_COPY_LOCATION (priv->move_frame.Get ());
D3D12_TEXTURE_COPY_LOCATION processed_frame =
CD3DX12_TEXTURE_COPY_LOCATION (priv->processed_frame.Get ());
const auto & data = priv->ctx->GetMoveRects ();
for (size_t i = 0; i < data.size (); i++) {
const auto & rect = data[i];
cl->CopyTextureRegion (&move_frame, rect.src_rect.left, rect.src_rect.top,
0, &processed_frame, &rect.box);
}
priv->resource_state = D3D12_RESOURCE_STATE_COPY_DEST;
barriers.clear ();
barriers.
push_back (CD3DX12_RESOURCE_BARRIER::Transition (priv->processed_frame.
Get (), D3D12_RESOURCE_STATE_COPY_SOURCE,
D3D12_RESOURCE_STATE_COPY_DEST));
barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (priv->
move_frame.Get (), D3D12_RESOURCE_STATE_COPY_DEST,
D3D12_RESOURCE_STATE_COPY_SOURCE));
cl->ResourceBarrier (barriers.size (), barriers.data ());
for (size_t i = 0; i < data.size (); i++) {
const auto & rect = data[i];
cl->CopyTextureRegion (&processed_frame, rect.dst_rect.left,
rect.dst_rect.top, 0, &move_frame, &rect.box);
}
barriers.clear ();
barriers.push_back (CD3DX12_RESOURCE_BARRIER::Transition (priv->
move_frame.Get (), D3D12_RESOURCE_STATE_COPY_SOURCE,
D3D12_RESOURCE_STATE_COPY_DEST));
cl->ResourceBarrier (barriers.size (), barriers.data ());
return TRUE;
}
static gboolean
gst_d3d12_dxgi_capture_copy_dirty_rects (GstD3D12DxgiCapture * self,
IDXGIResource * resource, ID3D12GraphicsCommandList * cl)
{
auto priv = self->priv;
HRESULT hr;
auto device = gst_d3d12_device_get_device_handle (self->device);
GST_LOG_OBJECT (self, "Rendering dirty rects");
if (!priv->shared_resource) {
ComPtr < IDXGIResource1 > resource1;
hr = resource->QueryInterface (IID_PPV_ARGS (&resource1));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "IDXGIResource1 interface unavailable");
return FALSE;
}
HANDLE shared_handle;
hr = resource1->CreateSharedHandle (nullptr, DXGI_SHARED_RESOURCE_READ,
nullptr, &shared_handle);
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create shared handle");
return FALSE;
}
hr = device->OpenSharedHandle (shared_handle,
IID_PPV_ARGS (&priv->shared_resource));
CloseHandle (shared_handle);
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't open shared resource");
return FALSE;
}
D3D12_SHADER_RESOURCE_VIEW_DESC srv_desc = { };
srv_desc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
srv_desc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
srv_desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
srv_desc.Texture2D.PlaneSlice = 0;
srv_desc.Texture2D.MipLevels = 1;
device->CreateShaderResourceView (priv->shared_resource.Get (), &srv_desc,
GetCPUDescriptorHandleForHeapStart (priv->srv_heap));
}
auto desc = priv->ctx->GetDesc ();
if (desc.Rotation == DXGI_MODE_ROTATION_UNSPECIFIED ||
desc.Rotation == DXGI_MODE_ROTATION_IDENTITY) {
const auto & rects = priv->ctx->GetDirtyRects ();
D3D12_TEXTURE_COPY_LOCATION src =
CD3DX12_TEXTURE_COPY_LOCATION (priv->shared_resource.Get ());
D3D12_TEXTURE_COPY_LOCATION dst =
CD3DX12_TEXTURE_COPY_LOCATION (priv->processed_frame.Get ());
D3D12_BOX box;
box.front = 0;
box.back = 1;
GST_LOG_OBJECT (self, "Perform copy");
for (size_t i = 0; i < rects.size (); i++) {
const auto & rect = rects[i];
box.left = rect.left;
box.right = rect.right;
box.top = rect.top;
box.bottom = rect.bottom;
cl->CopyTextureRegion (&dst, box.left, box.top, 0, &src, &box);
}
if (priv->resource_state == D3D12_RESOURCE_STATE_COMMON)
priv->resource_state = D3D12_RESOURCE_STATE_COPY_DEST;
} else {
GST_LOG_OBJECT (self, "Perform draw");
if (priv->resource_state != D3D12_RESOURCE_STATE_COMMON) {
D3D12_RESOURCE_BARRIER barrier =
CD3DX12_RESOURCE_BARRIER::Transition (priv->processed_frame.Get (),
priv->resource_state, D3D12_RESOURCE_STATE_RENDER_TARGET);
priv->cl->ResourceBarrier (1, &barrier);
}
cl->SetGraphicsRootSignature (priv->rs.Get ());
cl->IASetPrimitiveTopology (D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
cl->RSSetViewports (1, &priv->viewport);
cl->RSSetScissorRects (1, &priv->scissor_rect);
D3D12_CPU_DESCRIPTOR_HANDLE rtv_heaps[] = {
GetCPUDescriptorHandleForHeapStart (priv->rtv_heap)
};
cl->OMSetRenderTargets (1, rtv_heaps, FALSE, nullptr);
const auto & vertex = priv->ctx->GetDirtyVertex ();
UINT buf_size = vertex.size () * sizeof (VERTEX);
if (priv->dirty_vertex_size < buf_size)
priv->dirty_vertex_buf = nullptr;
if (!priv->dirty_vertex_buf) {
D3D12_HEAP_PROPERTIES heap_prop =
CD3DX12_HEAP_PROPERTIES (D3D12_HEAP_TYPE_UPLOAD);
D3D12_RESOURCE_DESC buffer_desc =
CD3DX12_RESOURCE_DESC::Buffer (buf_size);
hr = device->CreateCommittedResource (&heap_prop,
D3D12_HEAP_FLAG_CREATE_NOT_ZEROED, &buffer_desc,
D3D12_RESOURCE_STATE_GENERIC_READ, nullptr,
IID_PPV_ARGS (&priv->dirty_vertex_buf));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create vertex buffer");
return FALSE;
}
priv->dirty_vertex_size = buf_size;
}
CD3DX12_RANGE range (0, 0);
void *data;
hr = priv->dirty_vertex_buf->Map (0, &range, &data);
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't map buffer");
return FALSE;
}
memcpy (data, vertex.data (), buf_size);
priv->dirty_vertex_buf->Unmap (0, nullptr);
D3D12_VERTEX_BUFFER_VIEW vbv = { };
vbv.BufferLocation = priv->dirty_vertex_buf->GetGPUVirtualAddress ();
vbv.SizeInBytes = buf_size;
vbv.StrideInBytes = sizeof (VERTEX);
ID3D12DescriptorHeap *heaps[] = { priv->srv_heap.Get () };
cl->SetDescriptorHeaps (1, heaps);
cl->SetGraphicsRootDescriptorTable (0,
GetGPUDescriptorHandleForHeapStart (priv->srv_heap));
cl->IASetVertexBuffers (0, 1, &vbv);
cl->DrawInstanced (vertex.size (), 1, 0, 0);
if (priv->resource_state == D3D12_RESOURCE_STATE_COMMON)
priv->resource_state = D3D12_RESOURCE_STATE_RENDER_TARGET;
}
return TRUE;
}
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);
}
}
gst_d3d12_fence_data_pool_acquire (priv->fence_data_pool,
&priv->mouse_fence_data);
auto fence_data = priv->mouse_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");
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");
return FALSE;
}
if (!priv->mouse_cl) {
hr = device->CreateCommandList (0, D3D12_COMMAND_LIST_TYPE_DIRECT,
ca, nullptr, IID_PPV_ARGS (&priv->mouse_cl));
} else {
hr = priv->mouse_cl->Reset (ca, nullptr);
}
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't reset command list");
return FALSE;
}
auto cl = priv->mouse_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);
if (!gst_d3d12_converter_convert_buffer (priv->mouse_blend,
priv->mouse_buf, buffer, fence_data, cl.Get ())) {
GST_ERROR_OBJECT (self, "Couldn't build mouse blend command");
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 ())) {
GST_ERROR_OBJECT (self, "Couldn't build mouse blend command");
return FALSE;
}
}
hr = cl->Close ();
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't close command list");
return FALSE;
}
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;
GstD3D12Memory *dmem;
ID3D12Resource *out_resource;
D3D12_TEXTURE_COPY_LOCATION src, dst;
ID3D12CommandList *cmd_list[1];
GstD3D12FenceData *fence_data = nullptr;
GstD3D12CommandAllocator *gst_ca = nullptr;
ID3D12CommandAllocator *ca = nullptr;
HRESULT hr;
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;
}
ComPtr < IDXGIResource > resource;
ret = priv->ctx->AcquireNextFrame (&resource);
if (ret != GST_FLOW_OK) {
priv->ctx = nullptr;
priv->processed_frame = nullptr;
priv->move_frame = 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;
}
if (resource) {
if (resource != priv->last_resource)
priv->shared_resource = nullptr;
priv->last_resource = resource;
}
GST_LOG_OBJECT (self, "Capture done");
bool have_move_rect = false;
if (priv->ctx->GetMoveCount () > 0)
have_move_rect = true;
bool have_dirty_rect = false;
if ((priv->ctx->GetDirtyCount () > 0) && resource)
have_dirty_rect = true;
std::future < gboolean > mouse_blend_ret;
if (draw_mouse) {
/* Build mouse draw command from other thread */
mouse_blend_ret = std::async (std::launch::async,
gst_d3d12_dxgi_capture_draw_mouse, self, buffer, crop_box);
}
auto device = gst_d3d12_device_get_device_handle (self->device);
if (!gst_d3d12_command_allocator_pool_acquire (priv->ca_pool, &gst_ca)) {
GST_ERROR_OBJECT (self, "Couldn't acquire command allocator");
goto error;
}
gst_d3d12_fence_data_pool_acquire (priv->fence_data_pool, &fence_data);
gst_d3d12_fence_data_add_notify_mini_object (fence_data, gst_ca);
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");
goto error;
}
if (!priv->cl) {
hr = device->CreateCommandList (0, D3D12_COMMAND_LIST_TYPE_DIRECT,
ca, priv->pso.Get (), IID_PPV_ARGS (&priv->cl));
} else {
hr = priv->cl->Reset (ca, priv->pso.Get ());
}
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't reset command list");
goto error;
}
priv->resource_state = D3D12_RESOURCE_STATE_COMMON;
if (have_move_rect &&
!gst_d3d12_dxgi_capture_copy_move_rects (self, priv->cl.Get ())) {
GST_ERROR_OBJECT (self, "Couldn't copy move rects");
goto error;
}
if (have_dirty_rect &&
!gst_d3d12_dxgi_capture_copy_dirty_rects (self, resource.Get (),
priv->cl.Get ())) {
GST_ERROR_OBJECT (self, "Couldn't copy dirty rects");
goto error;
}
dmem = (GstD3D12Memory *) gst_buffer_peek_memory (buffer, 0);
out_resource = gst_d3d12_memory_get_resource_handle (dmem);
src = CD3DX12_TEXTURE_COPY_LOCATION (priv->processed_frame.Get ());
dst = CD3DX12_TEXTURE_COPY_LOCATION (out_resource);
if (priv->resource_state != D3D12_RESOURCE_STATE_COMMON) {
D3D12_RESOURCE_BARRIER barrier =
CD3DX12_RESOURCE_BARRIER::Transition (priv->processed_frame.Get (),
priv->resource_state, D3D12_RESOURCE_STATE_COPY_SOURCE);
priv->cl->ResourceBarrier (1, &barrier);
}
priv->cl->CopyTextureRegion (&dst, 0, 0, 0, &src, crop_box);
hr = priv->cl->Close ();
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't close command list");
goto error;
}
cmd_list[0] = priv->cl.Get ();
if (!gst_d3d12_device_execute_command_lists (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, 1, cmd_list, &priv->fence_val)) {
GST_ERROR_OBJECT (self, "Couldn't execute command list");
goto error;
}
gst_d3d12_device_set_fence_notify (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, priv->fence_val, fence_data);
gst_d3d12_buffer_after_write (buffer, priv->fence_val);
if (draw_mouse) {
auto blend_ret = mouse_blend_ret.get ();
if (!blend_ret) {
GST_ERROR_OBJECT (self, "Couldn't build mouse draw command");
goto error;
}
if (priv->mouse_fence_data && priv->mouse_cl) {
cmd_list[0] = priv->mouse_cl.Get ();
if (!gst_d3d12_device_execute_command_lists (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, 1, cmd_list,
&priv->mouse_fence_val)) {
GST_ERROR_OBJECT (self, "Couldn't execute command list");
goto error;
}
gst_d3d12_device_set_fence_notify (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, priv->mouse_fence_val,
priv->mouse_fence_data);
priv->mouse_fence_data = nullptr;
gst_d3d12_buffer_after_write (buffer, priv->mouse_fence_val);
}
}
if (have_dirty_rect) {
gst_d3d12_device_fence_wait (self->device, D3D12_COMMAND_LIST_TYPE_DIRECT,
priv->fence_val, priv->event_handle);
}
priv->ctx->ReleaseFrame ();
return GST_FLOW_OK;
error:
if (mouse_blend_ret.valid ())
mouse_blend_ret.get ();
gst_clear_d3d12_fence_data (&priv->mouse_fence_data);
gst_clear_d3d12_fence_data (&fence_data);
gst_clear_buffer (&priv->mouse_buf);
gst_clear_buffer (&priv->mouse_xor_buf);
resource = nullptr;
priv->last_resource = nullptr;
priv->shared_resource = nullptr;
priv->processed_frame = nullptr;
priv->move_frame = nullptr;
priv->ctx = nullptr;
return GST_FLOW_ERROR;
}
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