gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12screencapture.h

/* 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.
 */

#pragma once

#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/d3d12/gstd3d12.h>

G_BEGIN_DECLS

#define GST_TYPE_D3D12_SCREEN_CAPTURE             (gst_d3d12_screen_capture_get_type())
#define GST_D3D12_SCREEN_CAPTURE(obj)             (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_D3D12_SCREEN_CAPTURE,GstD3D12ScreenCapture))
#define GST_D3D12_SCREEN_CAPTURE_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_D3D12_SCREEN_CAPTURE,GstD3D12ScreenCaptureClass))
#define GST_D3D12_SCREEN_CAPTURE_GET_CLASS(obj)   (GST_D3D12_SCREEN_CAPTURE_CLASS(G_OBJECT_GET_CLASS(obj)))
#define GST_IS_D3D12_SCREEN_CAPTURE(obj)          (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_D3D12_SCREEN_CAPTURE))
#define GST_IS_D3D12_SCREEN_CAPTURE_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_D3D12_SCREEN_CAPTURE))
#define GST_D3D12_SCREEN_CAPTURE_CAST(obj)        ((GstD3D12ScreenCapture*)(obj))

typedef struct _GstD3D12ScreenCapture GstD3D12ScreenCapture;
typedef struct _GstD3D12ScreenCaptureClass GstD3D12ScreenCaptureClass;

#define GST_D3D12_SCREEN_CAPTURE_FLOW_EXPECTED_ERROR GST_FLOW_CUSTOM_SUCCESS
#define GST_D3D12_SCREEN_CAPTURE_FLOW_SIZE_CHANGED GST_FLOW_CUSTOM_SUCCESS_1
#define GST_D3D12_SCREEN_CAPTURE_FLOW_UNSUPPORTED GST_FLOW_CUSTOM_ERROR

struct CaptureCropRect
{
  guint crop_x;
  guint crop_y;
  guint crop_w;
  guint crop_h;
};

struct _GstD3D12ScreenCapture
{
  GstObject parent;
};

struct _GstD3D12ScreenCaptureClass
{
  GstObjectClass parent_class;

  GstFlowReturn (*prepare) (GstD3D12ScreenCapture * capture);

  gboolean      (*get_size) (GstD3D12ScreenCapture * capture,
                             guint * width,
                             guint * height);

  gboolean      (*unlock)          (GstD3D12ScreenCapture * capture);

  gboolean      (*unlock_stop)     (GstD3D12ScreenCapture * capture);
};

GType           gst_d3d12_screen_capture_get_type (void);

GstFlowReturn   gst_d3d12_screen_capture_prepare (GstD3D12ScreenCapture * capture);

gboolean        gst_d3d12_screen_capture_get_size (GstD3D12ScreenCapture * capture,
                                                   guint * width,
                                                   guint * height);

gboolean        gst_d3d12_screen_capture_unlock      (GstD3D12ScreenCapture * capture);

gboolean        gst_d3d12_screen_capture_unlock_stop (GstD3D12ScreenCapture * capture);

HRESULT         gst_d3d12_screen_capture_find_output_for_monitor (HMONITOR monitor,
                                                                  IDXGIAdapter1 ** adapter,
                                                                  IDXGIOutput ** output);

HRESULT         gst_d3d12_screen_capture_find_primary_monitor (HMONITOR * monitor,
                                                               IDXGIAdapter1 ** adapter,
                                                               IDXGIOutput ** output);

HRESULT         gst_d3d12_screen_capture_find_nth_monitor (guint index,
                                                           HMONITOR * monitor,
                                                           IDXGIAdapter1 ** adapter,
                                                           IDXGIOutput ** output);

G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstD3D12ScreenCapture, gst_object_unref)

G_END_DECLS