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4db7eb0290
Adding support for window and monitor capturing by using Windows Graphics Capture API. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6256>
251 lines
6.1 KiB
C++
251 lines
6.1 KiB
C++
/* GStreamer
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* Copyright (C) 2024 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstd3d12screencapture.h"
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#include "gstd3d12pluginutils.h"
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#include <string.h>
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#include <wrl.h>
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GST_DEBUG_CATEGORY_EXTERN (gst_d3d12_screen_capture_debug);
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#define GST_CAT_DEFAULT gst_d3d12_screen_capture_debug
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/* *INDENT-OFF* */
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using namespace Microsoft::WRL;
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/* *INDENT-ON* */
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#define gst_d3d12_screen_capture_parent_class parent_class
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G_DEFINE_ABSTRACT_TYPE (GstD3D12ScreenCapture, gst_d3d12_screen_capture,
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GST_TYPE_OBJECT);
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static void
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gst_d3d12_screen_capture_class_init (GstD3D12ScreenCaptureClass * klass)
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{
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}
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static void
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gst_d3d12_screen_capture_init (GstD3D12ScreenCapture * self)
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{
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}
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GstFlowReturn
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gst_d3d12_screen_capture_prepare (GstD3D12ScreenCapture * capture)
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{
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g_return_val_if_fail (GST_IS_D3D12_SCREEN_CAPTURE (capture), GST_FLOW_ERROR);
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auto klass = GST_D3D12_SCREEN_CAPTURE_GET_CLASS (capture);
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g_assert (klass->prepare);
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return klass->prepare (capture);
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}
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gboolean
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gst_d3d12_screen_capture_get_size (GstD3D12ScreenCapture * capture,
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guint * width, guint * height)
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{
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g_return_val_if_fail (GST_IS_D3D12_SCREEN_CAPTURE (capture), FALSE);
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g_return_val_if_fail (width != nullptr, FALSE);
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g_return_val_if_fail (height != nullptr, FALSE);
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auto klass = GST_D3D12_SCREEN_CAPTURE_GET_CLASS (capture);
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g_assert (klass->get_size);
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return klass->get_size (capture, width, height);
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}
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gboolean
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gst_d3d12_screen_capture_unlock (GstD3D12ScreenCapture * capture)
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{
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g_return_val_if_fail (GST_IS_D3D12_SCREEN_CAPTURE (capture), FALSE);
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auto klass = GST_D3D12_SCREEN_CAPTURE_GET_CLASS (capture);
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if (klass->unlock)
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return klass->unlock (capture);
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return TRUE;
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}
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gboolean
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gst_d3d12_screen_capture_unlock_stop (GstD3D12ScreenCapture * capture)
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{
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g_return_val_if_fail (GST_IS_D3D12_SCREEN_CAPTURE (capture), FALSE);
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auto klass = GST_D3D12_SCREEN_CAPTURE_GET_CLASS (capture);
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if (klass->unlock_stop)
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return klass->unlock_stop (capture);
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return TRUE;
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}
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HRESULT
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gst_d3d12_screen_capture_find_output_for_monitor (HMONITOR monitor,
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IDXGIAdapter1 ** adapter, IDXGIOutput ** output)
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{
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ComPtr < IDXGIFactory1 > factory;
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HRESULT hr = S_OK;
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g_return_val_if_fail (monitor != nullptr, E_INVALIDARG);
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hr = CreateDXGIFactory1 (IID_PPV_ARGS (&factory));
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if (FAILED (hr))
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return hr;
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for (UINT adapter_idx = 0;; adapter_idx++) {
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ComPtr < IDXGIAdapter1 > adapter_tmp;
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hr = factory->EnumAdapters1 (adapter_idx, &adapter_tmp);
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if (FAILED (hr))
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break;
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for (UINT output_idx = 0;; output_idx++) {
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ComPtr < IDXGIOutput > output_tmp;
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DXGI_OUTPUT_DESC desc;
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hr = adapter_tmp->EnumOutputs (output_idx, &output_tmp);
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if (FAILED (hr))
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break;
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hr = output_tmp->GetDesc (&desc);
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if (FAILED (hr))
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continue;
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if (desc.Monitor == monitor) {
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if (adapter)
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*adapter = adapter_tmp.Detach ();
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if (output)
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*output = output_tmp.Detach ();
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return S_OK;
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}
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}
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}
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return E_FAIL;
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}
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HRESULT
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gst_d3d12_screen_capture_find_primary_monitor (HMONITOR * monitor,
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IDXGIAdapter1 ** adapter, IDXGIOutput ** output)
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{
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ComPtr < IDXGIFactory1 > factory;
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HRESULT hr = S_OK;
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hr = CreateDXGIFactory1 (IID_PPV_ARGS (&factory));
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if (FAILED (hr))
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return hr;
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for (UINT adapter_idx = 0;; adapter_idx++) {
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ComPtr < IDXGIAdapter1 > adapter_tmp;
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hr = factory->EnumAdapters1 (adapter_idx, &adapter_tmp);
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if (FAILED (hr))
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break;
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for (UINT output_idx = 0;; output_idx++) {
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ComPtr < IDXGIOutput > output_tmp;
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DXGI_OUTPUT_DESC desc;
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MONITORINFOEXW minfo;
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hr = adapter_tmp->EnumOutputs (output_idx, &output_tmp);
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if (FAILED (hr))
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break;
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hr = output_tmp->GetDesc (&desc);
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if (FAILED (hr))
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continue;
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minfo.cbSize = sizeof (MONITORINFOEXW);
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if (!GetMonitorInfoW (desc.Monitor, &minfo))
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continue;
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if ((minfo.dwFlags & MONITORINFOF_PRIMARY) != 0) {
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if (monitor)
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*monitor = desc.Monitor;
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if (adapter)
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*adapter = adapter_tmp.Detach ();
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if (output)
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*output = output_tmp.Detach ();
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return S_OK;
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}
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}
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}
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return E_FAIL;
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}
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HRESULT
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gst_d3d12_screen_capture_find_nth_monitor (guint index, HMONITOR * monitor,
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IDXGIAdapter1 ** adapter, IDXGIOutput ** output)
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{
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ComPtr < IDXGIFactory1 > factory;
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HRESULT hr = S_OK;
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guint num_found = 0;
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hr = CreateDXGIFactory1 (IID_PPV_ARGS (&factory));
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if (FAILED (hr))
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return hr;
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for (UINT adapter_idx = 0;; adapter_idx++) {
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ComPtr < IDXGIAdapter1 > adapter_tmp;
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hr = factory->EnumAdapters1 (adapter_idx, &adapter_tmp);
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if (FAILED (hr))
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break;
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for (UINT output_idx = 0;; output_idx++) {
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ComPtr < IDXGIOutput > output_tmp;
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DXGI_OUTPUT_DESC desc;
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MONITORINFOEXW minfo;
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hr = adapter_tmp->EnumOutputs (output_idx, &output_tmp);
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if (FAILED (hr))
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break;
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hr = output_tmp->GetDesc (&desc);
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if (FAILED (hr))
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continue;
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minfo.cbSize = sizeof (MONITORINFOEXW);
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if (!GetMonitorInfoW (desc.Monitor, &minfo))
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continue;
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if (num_found == index) {
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if (monitor)
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*monitor = desc.Monitor;
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if (adapter)
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*adapter = adapter_tmp.Detach ();
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if (output)
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*output = output_tmp.Detach ();
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return S_OK;
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}
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num_found++;
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}
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}
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return E_FAIL;
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}
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