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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1007 lines
30 KiB
C++
1007 lines
30 KiB
C++
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/* 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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/**
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* SECTION:element-d3d12screencapturesrc
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* @title: d3d12screencapturesrc
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*
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* Direct3D12 screen capture element
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*
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* ## Example launch line
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* ```
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* gst-launch-1.0 d3d12screencapturesrc ! queue ! d3d12videosink
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* ```
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*
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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 "gstd3d12screencapturesrc.h"
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#include "gstd3d12dxgicapture.h"
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#include "gstd3d12pluginutils.h"
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#include <mutex>
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#include <wrl.h>
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#include <string.h>
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/* *INDENT-OFF* */
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using namespace Microsoft::WRL;
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/* *INDENT-ON* */
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GST_DEBUG_CATEGORY (gst_d3d12_screen_capture_debug);
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#define GST_CAT_DEFAULT gst_d3d12_screen_capture_debug
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enum
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{
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PROP_0,
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PROP_MONITOR_INDEX,
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PROP_MONITOR_HANDLE,
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PROP_SHOW_CURSOR,
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PROP_CROP_X,
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PROP_CROP_Y,
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PROP_CROP_WIDTH,
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PROP_CROP_HEIGHT,
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};
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#define DEFAULT_MONITOR_INDEX -1
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#define DEFAULT_SHOW_CURSOR FALSE
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static GstStaticPadTemplate src_template =
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GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY, "BGRA")
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", pixel-aspect-ratio = 1/1, colorimetry = (string) sRGB; "
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GST_VIDEO_CAPS_MAKE ("BGRA") ", pixel-aspect-ratio = 1/1, "
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"colorimetry = (string) sRGB"));
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struct GstD3D12ScreenCaptureSrcPrivate
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{
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~GstD3D12ScreenCaptureSrcPrivate ()
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{
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if (pool) {
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gst_buffer_pool_set_active (pool, FALSE);
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gst_clear_object (&pool);
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}
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gst_clear_object (&capture);
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}
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guint64 last_frame_no = 0;
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GstClockID clock_id = nullptr;
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GstVideoInfo video_info;
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GstD3D12ScreenCapture *capture = nullptr;
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GstBufferPool *pool = nullptr;
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gint64 adapter_luid = 0;
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gint monitor_index = DEFAULT_MONITOR_INDEX;
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HMONITOR monitor_handle = nullptr;
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gboolean show_cursor = DEFAULT_SHOW_CURSOR;
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guint crop_x = 0;
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guint crop_y = 0;
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guint crop_w = 0;
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guint crop_h = 0;
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D3D12_BOX crop_box = { };
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gboolean flushing = FALSE;
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GstClockTime latency = GST_CLOCK_TIME_NONE;
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gboolean downstream_supports_d3d12 = FALSE;
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std::recursive_mutex lock;
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std::mutex flush_lock;
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};
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struct _GstD3D12ScreenCaptureSrc
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{
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GstBaseSrc src;
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GstD3D12Device *device;
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GstD3D12ScreenCaptureSrcPrivate *priv;
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};
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static void gst_d3d12_screen_capture_src_finalize (GObject * object);
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static void gst_d3d12_screen_capture_src_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_d3d12_screen_capture_src_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstClock *gst_d3d12_screen_capture_src_provide_clock (GstElement *
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element);
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static void gst_d3d12_screen_capture_src_set_context (GstElement * element,
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GstContext * context);
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static GstCaps *gst_d3d12_screen_capture_src_get_caps (GstBaseSrc * bsrc,
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GstCaps * filter);
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static GstCaps *gst_d3d12_screen_capture_src_fixate (GstBaseSrc * bsrc,
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GstCaps * caps);
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static gboolean gst_d3d12_screen_capture_src_set_caps (GstBaseSrc * bsrc,
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GstCaps * caps);
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static gboolean gst_d3d12_screen_capture_src_decide_allocation (GstBaseSrc *
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bsrc, GstQuery * query);
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static gboolean gst_d3d12_screen_capture_src_start (GstBaseSrc * bsrc);
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static gboolean gst_d3d12_screen_capture_src_stop (GstBaseSrc * bsrc);
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static gboolean gst_d3d12_screen_capture_src_unlock (GstBaseSrc * bsrc);
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static gboolean gst_d3d12_screen_capture_src_unlock_stop (GstBaseSrc * bsrc);
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static gboolean
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gst_d3d12_screen_capture_src_src_query (GstBaseSrc * bsrc, GstQuery * query);
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static GstFlowReturn gst_d3d12_screen_capture_src_create (GstBaseSrc * bsrc,
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guint64 offset, guint size, GstBuffer ** buf);
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#define gst_d3d12_screen_capture_src_parent_class parent_class
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G_DEFINE_TYPE (GstD3D12ScreenCaptureSrc, gst_d3d12_screen_capture_src,
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GST_TYPE_BASE_SRC);
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static void
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gst_d3d12_screen_capture_src_class_init (GstD3D12ScreenCaptureSrcClass * klass)
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{
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auto object_class = G_OBJECT_CLASS (klass);
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auto element_class = GST_ELEMENT_CLASS (klass);
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auto basesrc_class = GST_BASE_SRC_CLASS (klass);
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object_class->finalize = gst_d3d12_screen_capture_src_finalize;
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object_class->set_property = gst_d3d12_screen_capture_src_set_property;
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object_class->get_property = gst_d3d12_screen_capture_src_get_property;
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g_object_class_install_property (object_class, PROP_MONITOR_INDEX,
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g_param_spec_int ("monitor-index", "Monitor Index",
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"Zero-based index for monitor to capture (-1 = primary monitor)",
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-1, G_MAXINT, DEFAULT_MONITOR_INDEX,
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(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
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G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (object_class, PROP_MONITOR_HANDLE,
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g_param_spec_uint64 ("monitor-handle", "Monitor Handle",
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"A HMONITOR handle of monitor to capture",
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0, G_MAXUINT64, 0,
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(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
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G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (object_class, PROP_SHOW_CURSOR,
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g_param_spec_boolean ("show-cursor",
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"Show Mouse Cursor", "Whether to show mouse cursor",
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DEFAULT_SHOW_CURSOR,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (object_class, PROP_CROP_X,
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g_param_spec_uint ("crop-x", "Crop X",
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"Horizontal coordinate of top left corner for the screen capture area",
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0, G_MAXUINT, 0,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (object_class, PROP_CROP_Y,
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g_param_spec_uint ("crop-y", "Crop Y",
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"Vertical coordinate of top left corner for the screen capture area",
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0, G_MAXUINT, 0,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (object_class, PROP_CROP_WIDTH,
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g_param_spec_uint ("crop-width", "Crop Width",
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"Width of screen capture area (0 = maximum)",
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0, G_MAXUINT, 0,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (object_class, PROP_CROP_HEIGHT,
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g_param_spec_uint ("crop-height", "Crop Height",
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"Height of screen capture area (0 = maximum)",
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0, G_MAXUINT, 0,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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element_class->provide_clock =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_provide_clock);
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element_class->set_context =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_set_context);
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gst_element_class_set_static_metadata (element_class,
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"Direct3D12 Screen Capture Source", "Source/Video",
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"Captures desktop screen", "Seungha Yang <seungha@centricular.com>");
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gst_element_class_add_static_pad_template (element_class, &src_template);
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basesrc_class->get_caps =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_get_caps);
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basesrc_class->fixate =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_fixate);
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basesrc_class->set_caps =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_set_caps);
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basesrc_class->decide_allocation =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_decide_allocation);
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basesrc_class->start = GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_start);
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basesrc_class->stop = GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_stop);
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basesrc_class->unlock =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_unlock);
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basesrc_class->unlock_stop =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_unlock_stop);
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basesrc_class->query =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_src_query);
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basesrc_class->create =
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GST_DEBUG_FUNCPTR (gst_d3d12_screen_capture_src_create);
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GST_DEBUG_CATEGORY_INIT (gst_d3d12_screen_capture_debug,
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"d3d12screencapturesrc", 0, "d3d12screencapturesrc");
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}
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static void
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gst_d3d12_screen_capture_src_init (GstD3D12ScreenCaptureSrc * self)
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{
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gst_base_src_set_live (GST_BASE_SRC (self), TRUE);
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gst_base_src_set_format (GST_BASE_SRC (self), GST_FORMAT_TIME);
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self->priv = new GstD3D12ScreenCaptureSrcPrivate ();
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GST_OBJECT_FLAG_SET (self, GST_ELEMENT_FLAG_PROVIDE_CLOCK);
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GST_OBJECT_FLAG_SET (self, GST_ELEMENT_FLAG_REQUIRE_CLOCK);
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}
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static void
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gst_d3d12_screen_capture_src_finalize (GObject * object)
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{
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auto self = GST_D3D12_SCREEN_CAPTURE_SRC (object);
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delete self->priv;
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gst_clear_object (&self->device);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_d3d12_screen_capture_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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auto self = GST_D3D12_SCREEN_CAPTURE_SRC (object);
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auto priv = self->priv;
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std::lock_guard < std::recursive_mutex > lk (priv->lock);
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switch (prop_id) {
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case PROP_MONITOR_INDEX:
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priv->monitor_index = g_value_get_int (value);
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break;
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case PROP_MONITOR_HANDLE:
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priv->monitor_handle = (HMONITOR) g_value_get_uint64 (value);
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break;
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case PROP_SHOW_CURSOR:
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priv->show_cursor = g_value_get_boolean (value);
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break;
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case PROP_CROP_X:
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priv->crop_x = g_value_get_uint (value);
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break;
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case PROP_CROP_Y:
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priv->crop_y = g_value_get_uint (value);
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break;
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case PROP_CROP_WIDTH:
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priv->crop_w = g_value_get_uint (value);
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break;
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case PROP_CROP_HEIGHT:
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priv->crop_h = g_value_get_uint (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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};
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}
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static void
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gst_d3d12_screen_capture_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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auto self = GST_D3D12_SCREEN_CAPTURE_SRC (object);
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auto priv = self->priv;
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std::lock_guard < std::recursive_mutex > lk (priv->lock);
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switch (prop_id) {
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case PROP_MONITOR_INDEX:
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g_value_set_int (value, priv->monitor_index);
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break;
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case PROP_MONITOR_HANDLE:
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g_value_set_uint64 (value, (guint64) priv->monitor_handle);
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break;
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case PROP_SHOW_CURSOR:
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g_value_set_boolean (value, priv->show_cursor);
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break;
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case PROP_CROP_X:
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g_value_set_uint (value, priv->crop_x);
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break;
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case PROP_CROP_Y:
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g_value_set_uint (value, priv->crop_y);
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break;
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case PROP_CROP_WIDTH:
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g_value_set_uint (value, priv->crop_w);
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break;
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case PROP_CROP_HEIGHT:
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g_value_set_uint (value, priv->crop_h);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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};
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}
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static GstClock *
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gst_d3d12_screen_capture_src_provide_clock (GstElement * element)
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{
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return gst_system_clock_obtain ();
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}
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static void
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gst_d3d12_screen_capture_src_set_context (GstElement * element,
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GstContext * context)
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{
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auto self = GST_D3D12_SCREEN_CAPTURE_SRC (element);
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auto priv = self->priv;
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{
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std::lock_guard < std::recursive_mutex > lk (priv->lock);
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gst_d3d12_handle_set_context_for_adapter_luid (element,
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context, priv->adapter_luid, &self->device);
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}
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GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
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}
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static void
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gst_d3d12_screen_capture_src_get_crop_box (GstD3D12ScreenCaptureSrc * self,
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D3D12_BOX & box)
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{
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auto priv = self->priv;
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guint screen_width, screen_height;
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box.front = 0;
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box.back = 1;
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gst_d3d12_screen_capture_get_size (priv->capture, &screen_width,
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&screen_height);
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if ((priv->crop_x + priv->crop_w) > screen_width ||
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(priv->crop_y + priv->crop_h) > screen_height) {
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GST_WARNING ("Capture region outside of the screen bounds; ignoring.");
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box.left = 0;
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box.top = 0;
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box.right = screen_width;
|
||
|
box.bottom = screen_height;
|
||
|
} else {
|
||
|
box.left = priv->crop_x;
|
||
|
box.top = priv->crop_y;
|
||
|
box.right = priv->crop_w ? (priv->crop_x + priv->crop_w) : screen_width;
|
||
|
box.bottom = priv->crop_h ? (priv->crop_y + priv->crop_h) : screen_height;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static GstCaps *
|
||
|
gst_d3d12_screen_capture_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
guint width, height;
|
||
|
|
||
|
std::lock_guard < std::recursive_mutex > lk (priv->lock);
|
||
|
if (!priv->capture) {
|
||
|
GST_DEBUG_OBJECT (self, "capture object is not configured yet");
|
||
|
return gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (bsrc));
|
||
|
}
|
||
|
|
||
|
gst_d3d12_screen_capture_src_get_crop_box (self, priv->crop_box);
|
||
|
width = priv->crop_box.right - priv->crop_box.left;
|
||
|
height = priv->crop_box.bottom - priv->crop_box.top;
|
||
|
|
||
|
auto caps = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (bsrc));
|
||
|
caps = gst_caps_make_writable (caps);
|
||
|
|
||
|
gst_caps_set_simple (caps, "width", G_TYPE_INT, width, "height",
|
||
|
G_TYPE_INT, height, nullptr);
|
||
|
|
||
|
if (filter) {
|
||
|
auto tmp = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
|
||
|
gst_caps_unref (caps);
|
||
|
|
||
|
caps = tmp;
|
||
|
}
|
||
|
|
||
|
return caps;
|
||
|
}
|
||
|
|
||
|
static GstCaps *
|
||
|
gst_d3d12_screen_capture_src_fixate (GstBaseSrc * bsrc, GstCaps * caps)
|
||
|
{
|
||
|
GstCaps *d3d12_caps = nullptr;
|
||
|
|
||
|
caps = gst_caps_make_writable (caps);
|
||
|
auto size = gst_caps_get_size (caps);
|
||
|
|
||
|
for (guint i = 0; i < size; i++) {
|
||
|
auto s = gst_caps_get_structure (caps, i);
|
||
|
gst_structure_fixate_field_nearest_fraction (s, "framerate", 30, 1);
|
||
|
|
||
|
if (!d3d12_caps) {
|
||
|
auto features = gst_caps_get_features (caps, i);
|
||
|
|
||
|
if (gst_caps_features_contains (features,
|
||
|
GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
|
||
|
d3d12_caps = gst_caps_new_empty ();
|
||
|
gst_caps_append_structure (d3d12_caps, gst_structure_copy (s));
|
||
|
|
||
|
gst_caps_set_features (d3d12_caps, 0,
|
||
|
gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY,
|
||
|
nullptr));
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (d3d12_caps) {
|
||
|
gst_caps_unref (caps);
|
||
|
caps = d3d12_caps;
|
||
|
}
|
||
|
|
||
|
return gst_caps_fixate (caps);
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_d3d12_screen_capture_src_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
|
||
|
GST_DEBUG_OBJECT (self, "Set caps %" GST_PTR_FORMAT, caps);
|
||
|
|
||
|
auto features = gst_caps_get_features (caps, 0);
|
||
|
if (gst_caps_features_contains (features,
|
||
|
GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
|
||
|
priv->downstream_supports_d3d12 = TRUE;
|
||
|
} else {
|
||
|
priv->downstream_supports_d3d12 = FALSE;
|
||
|
}
|
||
|
|
||
|
gst_video_info_from_caps (&priv->video_info, caps);
|
||
|
gst_base_src_set_blocksize (bsrc, GST_VIDEO_INFO_SIZE (&priv->video_info));
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_d3d12_screen_capture_src_decide_allocation (GstBaseSrc * bsrc,
|
||
|
GstQuery * query)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
GstBufferPool *pool = nullptr;
|
||
|
GstStructure *config;
|
||
|
GstCaps *caps;
|
||
|
guint min, max, size;
|
||
|
gboolean update_pool;
|
||
|
GstVideoInfo vinfo;
|
||
|
|
||
|
if (priv->pool) {
|
||
|
gst_buffer_pool_set_active (priv->pool, FALSE);
|
||
|
gst_clear_object (&priv->pool);
|
||
|
}
|
||
|
|
||
|
gst_query_parse_allocation (query, &caps, nullptr);
|
||
|
|
||
|
if (!caps) {
|
||
|
GST_ERROR_OBJECT (self, "No output caps");
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
gst_video_info_from_caps (&vinfo, caps);
|
||
|
|
||
|
if (gst_query_get_n_allocation_pools (query) > 0) {
|
||
|
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
|
||
|
update_pool = TRUE;
|
||
|
} else {
|
||
|
size = GST_VIDEO_INFO_SIZE (&vinfo);
|
||
|
|
||
|
min = max = 0;
|
||
|
update_pool = FALSE;
|
||
|
}
|
||
|
|
||
|
if (pool && priv->downstream_supports_d3d12) {
|
||
|
if (!GST_IS_D3D12_BUFFER_POOL (pool)) {
|
||
|
gst_clear_object (&pool);
|
||
|
} else {
|
||
|
auto dpool = GST_D3D12_BUFFER_POOL (pool);
|
||
|
if (dpool->device != self->device)
|
||
|
gst_clear_object (&pool);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (!pool) {
|
||
|
if (priv->downstream_supports_d3d12)
|
||
|
pool = gst_d3d12_buffer_pool_new (self->device);
|
||
|
else
|
||
|
pool = gst_video_buffer_pool_new ();
|
||
|
}
|
||
|
|
||
|
config = gst_buffer_pool_get_config (pool);
|
||
|
|
||
|
gst_buffer_pool_config_set_params (config, caps, size, min, max);
|
||
|
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
|
||
|
|
||
|
if (priv->downstream_supports_d3d12) {
|
||
|
D3D12_RESOURCE_FLAGS resource_flags =
|
||
|
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS |
|
||
|
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
|
||
|
|
||
|
auto params = gst_buffer_pool_config_get_d3d12_allocation_params (config);
|
||
|
if (!params) {
|
||
|
params = gst_d3d12_allocation_params_new (self->device, &vinfo,
|
||
|
GST_D3D12_ALLOCATION_FLAG_DEFAULT, resource_flags);
|
||
|
} else {
|
||
|
gst_d3d12_allocation_params_set_resource_flags (params, resource_flags);
|
||
|
gst_d3d12_allocation_params_unset_resource_flags (params,
|
||
|
D3D12_RESOURCE_FLAG_DENY_SHADER_RESOURCE);
|
||
|
}
|
||
|
|
||
|
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
|
||
|
gst_d3d12_allocation_params_free (params);
|
||
|
}
|
||
|
|
||
|
if (!gst_buffer_pool_set_config (pool, config)) {
|
||
|
GST_ERROR_OBJECT (self, "Failed to set config");
|
||
|
gst_clear_object (&pool);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
/* d3d12 buffer pool will update buffer size based on allocated texture,
|
||
|
* get size from config again */
|
||
|
config = gst_buffer_pool_get_config (pool);
|
||
|
gst_buffer_pool_config_get_params (config, nullptr, &size, nullptr, nullptr);
|
||
|
gst_structure_free (config);
|
||
|
|
||
|
if (!priv->downstream_supports_d3d12) {
|
||
|
priv->pool = gst_d3d12_buffer_pool_new (self->device);
|
||
|
|
||
|
config = gst_buffer_pool_get_config (priv->pool);
|
||
|
|
||
|
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
|
||
|
gst_buffer_pool_config_add_option (config,
|
||
|
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
||
|
|
||
|
D3D12_RESOURCE_FLAGS resource_flags =
|
||
|
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS |
|
||
|
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
|
||
|
|
||
|
auto params = gst_d3d12_allocation_params_new (self->device, &vinfo,
|
||
|
GST_D3D12_ALLOCATION_FLAG_DEFAULT, resource_flags);
|
||
|
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
|
||
|
gst_d3d12_allocation_params_free (params);
|
||
|
|
||
|
if (!gst_buffer_pool_set_config (priv->pool, config)) {
|
||
|
GST_ERROR_OBJECT (self, "Failed to set config for internal pool");
|
||
|
gst_clear_object (&priv->pool);
|
||
|
gst_clear_object (&pool);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if (!gst_buffer_pool_set_active (priv->pool, TRUE)) {
|
||
|
GST_ERROR_OBJECT (self, "Failed to activate internal pool");
|
||
|
gst_clear_object (&pool);
|
||
|
return FALSE;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (update_pool)
|
||
|
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
|
||
|
else
|
||
|
gst_query_add_allocation_pool (query, pool, size, min, max);
|
||
|
|
||
|
gst_object_unref (pool);
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_d3d12_screen_capture_src_start (GstBaseSrc * bsrc)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
GstFlowReturn ret;
|
||
|
HMONITOR monitor = priv->monitor_handle;
|
||
|
ComPtr < IDXGIAdapter1 > adapter;
|
||
|
DXGI_ADAPTER_DESC desc;
|
||
|
GstD3D12ScreenCapture *capture = nullptr;
|
||
|
HRESULT hr;
|
||
|
|
||
|
if (monitor) {
|
||
|
hr = gst_d3d12_screen_capture_find_output_for_monitor (monitor,
|
||
|
&adapter, nullptr);
|
||
|
} else if (priv->monitor_index < 0) {
|
||
|
hr = gst_d3d12_screen_capture_find_primary_monitor (&monitor,
|
||
|
&adapter, nullptr);
|
||
|
} else {
|
||
|
hr = gst_d3d12_screen_capture_find_nth_monitor (priv->monitor_index,
|
||
|
&monitor, &adapter, nullptr);
|
||
|
}
|
||
|
|
||
|
if (FAILED (hr)) {
|
||
|
GST_ERROR_OBJECT (self, "Couldn't get monitor handle");
|
||
|
goto error;
|
||
|
}
|
||
|
|
||
|
adapter->GetDesc (&desc);
|
||
|
{
|
||
|
std::lock_guard < std::recursive_mutex > lk (priv->lock);
|
||
|
priv->adapter_luid = gst_d3d12_luid_to_int64 (&desc.AdapterLuid);
|
||
|
gst_clear_object (&self->device);
|
||
|
|
||
|
gst_d3d12_ensure_element_data_for_adapter_luid (GST_ELEMENT_CAST (self),
|
||
|
priv->adapter_luid, &self->device);
|
||
|
}
|
||
|
|
||
|
if (!self->device) {
|
||
|
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
|
||
|
("D3D12 device is not available"), (nullptr));
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
capture = gst_d3d12_dxgi_capture_new (self->device, monitor);
|
||
|
if (!capture) {
|
||
|
GST_ERROR_OBJECT (self, "Couldn't create capture object");
|
||
|
goto error;
|
||
|
}
|
||
|
|
||
|
/* Check if we can open device */
|
||
|
ret = gst_d3d12_screen_capture_prepare (capture);
|
||
|
switch (ret) {
|
||
|
case GST_D3D12_SCREEN_CAPTURE_FLOW_EXPECTED_ERROR:
|
||
|
case GST_FLOW_OK:
|
||
|
break;
|
||
|
case GST_D3D12_SCREEN_CAPTURE_FLOW_UNSUPPORTED:
|
||
|
goto unsupported;
|
||
|
default:
|
||
|
goto error;
|
||
|
}
|
||
|
|
||
|
priv->last_frame_no = -1;
|
||
|
priv->latency = GST_CLOCK_TIME_NONE;
|
||
|
priv->capture = capture;
|
||
|
|
||
|
return TRUE;
|
||
|
|
||
|
error:
|
||
|
{
|
||
|
gst_clear_object (&capture);
|
||
|
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
|
||
|
("Failed to prepare capture object with given configuration, "
|
||
|
"monitor-index: %d, monitor-handle: %p",
|
||
|
priv->monitor_index, priv->monitor_handle), (nullptr));
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
unsupported:
|
||
|
{
|
||
|
gst_clear_object (&capture);
|
||
|
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ,
|
||
|
("Failed to prepare capture object with given configuration, "
|
||
|
"monitor-index: %d, monitor-handle: %p",
|
||
|
priv->monitor_index, priv->monitor_handle),
|
||
|
("Try run the application on the integrated GPU"));
|
||
|
return FALSE;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_d3d12_screen_capture_src_stop (GstBaseSrc * bsrc)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
|
||
|
if (priv->pool) {
|
||
|
gst_buffer_pool_set_active (priv->pool, FALSE);
|
||
|
gst_clear_object (&priv->pool);
|
||
|
}
|
||
|
|
||
|
gst_clear_object (&priv->capture);
|
||
|
gst_clear_object (&self->device);
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_d3d12_screen_capture_src_unlock (GstBaseSrc * bsrc)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
|
||
|
std::lock_guard < std::mutex > lk (priv->flush_lock);
|
||
|
if (priv->clock_id) {
|
||
|
GST_DEBUG_OBJECT (self, "Waking up waiting clock");
|
||
|
gst_clock_id_unschedule (priv->clock_id);
|
||
|
}
|
||
|
priv->flushing = TRUE;
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_d3d12_screen_capture_src_unlock_stop (GstBaseSrc * bsrc)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
|
||
|
std::lock_guard < std::mutex > lk (priv->flush_lock);
|
||
|
priv->flushing = FALSE;
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static gboolean
|
||
|
gst_d3d12_screen_capture_src_src_query (GstBaseSrc * bsrc, GstQuery * query)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
|
||
|
switch (GST_QUERY_TYPE (query)) {
|
||
|
case GST_QUERY_CONTEXT:
|
||
|
{
|
||
|
std::lock_guard < std::recursive_mutex > lk (priv->lock);
|
||
|
if (gst_d3d12_handle_context_query (GST_ELEMENT_CAST (self), query,
|
||
|
self->device)) {
|
||
|
return TRUE;
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
case GST_QUERY_LATENCY:
|
||
|
{
|
||
|
std::lock_guard < std::recursive_mutex > lk (priv->lock);
|
||
|
if (GST_CLOCK_TIME_IS_VALID (priv->latency)) {
|
||
|
gst_query_set_latency (query, TRUE, priv->latency, GST_CLOCK_TIME_NONE);
|
||
|
return TRUE;
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
|
||
|
}
|
||
|
|
||
|
static GstFlowReturn
|
||
|
gst_d3d12_screen_capture_src_create (GstBaseSrc * bsrc, guint64 offset,
|
||
|
guint size, GstBuffer ** buf)
|
||
|
{
|
||
|
auto self = GST_D3D12_SCREEN_CAPTURE_SRC (bsrc);
|
||
|
auto priv = self->priv;
|
||
|
gint fps_n, fps_d;
|
||
|
GstFlowReturn ret = GST_FLOW_OK;
|
||
|
GstClockTime base_time;
|
||
|
GstClockTime next_capture_ts;
|
||
|
GstClockTime latency;
|
||
|
GstClockTime dur;
|
||
|
guint64 next_frame_no;
|
||
|
gboolean draw_mouse;
|
||
|
/* Just magic number... */
|
||
|
gint unsupported_retry_count = 100;
|
||
|
GstBuffer *buffer = nullptr;
|
||
|
D3D12_BOX crop_box;
|
||
|
|
||
|
if (!priv->capture) {
|
||
|
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ,
|
||
|
("Couldn't configure capture object"), (nullptr));
|
||
|
return GST_FLOW_NOT_NEGOTIATED;
|
||
|
}
|
||
|
|
||
|
fps_n = GST_VIDEO_INFO_FPS_N (&priv->video_info);
|
||
|
fps_d = GST_VIDEO_INFO_FPS_D (&priv->video_info);
|
||
|
|
||
|
if (fps_n <= 0 || fps_d <= 0)
|
||
|
return GST_FLOW_NOT_NEGOTIATED;
|
||
|
|
||
|
{
|
||
|
std::lock_guard < std::recursive_mutex > lk (priv->lock);
|
||
|
draw_mouse = priv->show_cursor;
|
||
|
gst_d3d12_screen_capture_src_get_crop_box (self, crop_box);
|
||
|
if (crop_box.left != priv->crop_box.left ||
|
||
|
crop_box.right != priv->crop_box.right ||
|
||
|
crop_box.top != priv->crop_box.top ||
|
||
|
crop_box.bottom != priv->crop_box.bottom) {
|
||
|
GST_INFO_OBJECT (self, "Capture area changed, need negotiation");
|
||
|
if (!gst_base_src_negotiate (bsrc)) {
|
||
|
GST_ERROR_OBJECT (self, "Failed to negotiate with new capture area");
|
||
|
return GST_FLOW_NOT_NEGOTIATED;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
again:
|
||
|
auto clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
|
||
|
|
||
|
/* Check flushing before waiting clock because we are might be doing
|
||
|
* retry */
|
||
|
{
|
||
|
std::unique_lock < std::mutex > lk (priv->flush_lock);
|
||
|
if (priv->flushing) {
|
||
|
gst_clear_object (&clock);
|
||
|
return GST_FLOW_FLUSHING;
|
||
|
}
|
||
|
|
||
|
base_time = GST_ELEMENT_CAST (self)->base_time;
|
||
|
next_capture_ts = gst_clock_get_time (clock);
|
||
|
next_capture_ts -= base_time;
|
||
|
|
||
|
next_frame_no = gst_util_uint64_scale (next_capture_ts,
|
||
|
fps_n, GST_SECOND * fps_d);
|
||
|
|
||
|
if (next_frame_no == priv->last_frame_no) {
|
||
|
GstClockID id;
|
||
|
GstClockReturn clock_ret;
|
||
|
|
||
|
/* Need to wait for the next frame */
|
||
|
next_frame_no += 1;
|
||
|
|
||
|
/* Figure out what the next frame time is */
|
||
|
next_capture_ts = gst_util_uint64_scale (next_frame_no,
|
||
|
fps_d * GST_SECOND, fps_n);
|
||
|
|
||
|
id = gst_clock_new_single_shot_id (GST_ELEMENT_CLOCK (self),
|
||
|
next_capture_ts + base_time);
|
||
|
priv->clock_id = id;
|
||
|
|
||
|
/* release the object lock while waiting */
|
||
|
lk.unlock ();
|
||
|
|
||
|
GST_LOG_OBJECT (self, "Waiting for next frame time %" GST_TIME_FORMAT,
|
||
|
GST_TIME_ARGS (next_capture_ts));
|
||
|
clock_ret = gst_clock_id_wait (id, nullptr);
|
||
|
lk.lock ();
|
||
|
|
||
|
gst_clock_id_unref (id);
|
||
|
priv->clock_id = nullptr;
|
||
|
|
||
|
if (clock_ret == GST_CLOCK_UNSCHEDULED) {
|
||
|
/* Got woken up by the unlock function */
|
||
|
gst_clear_object (&clock);
|
||
|
return GST_FLOW_FLUSHING;
|
||
|
}
|
||
|
/* Duration is a complete 1/fps frame duration */
|
||
|
dur = gst_util_uint64_scale_int (GST_SECOND, fps_d, fps_n);
|
||
|
} else {
|
||
|
GstClockTime next_frame_ts;
|
||
|
|
||
|
GST_LOG_OBJECT (self, "No need to wait for next frame time %"
|
||
|
GST_TIME_FORMAT " next frame = %" G_GINT64_FORMAT " prev = %"
|
||
|
G_GINT64_FORMAT, GST_TIME_ARGS (next_capture_ts), next_frame_no,
|
||
|
priv->last_frame_no);
|
||
|
|
||
|
next_frame_ts = gst_util_uint64_scale (next_frame_no + 1,
|
||
|
fps_d * GST_SECOND, fps_n);
|
||
|
/* Frame duration is from now until the next expected capture time */
|
||
|
dur = next_frame_ts - next_capture_ts;
|
||
|
}
|
||
|
}
|
||
|
gst_clear_object (&clock);
|
||
|
|
||
|
priv->last_frame_no = next_frame_no;
|
||
|
|
||
|
if (!buffer) {
|
||
|
if (priv->downstream_supports_d3d12) {
|
||
|
ret = GST_BASE_SRC_CLASS (parent_class)->alloc (bsrc,
|
||
|
offset, size, &buffer);
|
||
|
} else {
|
||
|
ret = gst_buffer_pool_acquire_buffer (priv->pool, &buffer, nullptr);
|
||
|
}
|
||
|
|
||
|
if (ret != GST_FLOW_OK)
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
auto before_capture = gst_util_get_timestamp ();
|
||
|
ret = gst_d3d12_screen_capture_do_capture (priv->capture, buffer,
|
||
|
&crop_box, draw_mouse);
|
||
|
|
||
|
switch (ret) {
|
||
|
case GST_D3D12_SCREEN_CAPTURE_FLOW_EXPECTED_ERROR:
|
||
|
GST_WARNING_OBJECT (self, "Got expected error, try again");
|
||
|
goto again;
|
||
|
case GST_D3D12_SCREEN_CAPTURE_FLOW_UNSUPPORTED:
|
||
|
GST_WARNING_OBJECT (self, "Got DXGI_ERROR_UNSUPPORTED error");
|
||
|
unsupported_retry_count--;
|
||
|
|
||
|
if (unsupported_retry_count < 0) {
|
||
|
gst_clear_buffer (&buffer);
|
||
|
GST_ERROR_OBJECT (self, "too many DXGI_ERROR_UNSUPPORTED");
|
||
|
return GST_FLOW_ERROR;
|
||
|
}
|
||
|
|
||
|
goto again;
|
||
|
case GST_D3D12_SCREEN_CAPTURE_FLOW_SIZE_CHANGED:
|
||
|
GST_INFO_OBJECT (self, "Size was changed, need negotiation");
|
||
|
gst_clear_buffer (&buffer);
|
||
|
|
||
|
if (!gst_base_src_negotiate (bsrc)) {
|
||
|
GST_ERROR_OBJECT (self, "Failed to negotiate with new size");
|
||
|
return GST_FLOW_NOT_NEGOTIATED;
|
||
|
}
|
||
|
goto again;
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (ret != GST_FLOW_OK) {
|
||
|
gst_clear_buffer (&buffer);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
if (!priv->downstream_supports_d3d12) {
|
||
|
GstVideoFrame in_frame, out_frame;
|
||
|
GstBuffer *sysmem_buf = nullptr;
|
||
|
ret = GST_BASE_SRC_CLASS (parent_class)->alloc (bsrc,
|
||
|
offset, size, &sysmem_buf);
|
||
|
if (ret != GST_FLOW_OK) {
|
||
|
gst_clear_buffer (&buffer);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
if (!gst_video_frame_map (&in_frame, &priv->video_info, buffer,
|
||
|
GST_MAP_READ)) {
|
||
|
GST_ERROR_OBJECT (self, "Couldn't map frame");
|
||
|
gst_clear_buffer (&buffer);
|
||
|
gst_clear_buffer (&sysmem_buf);
|
||
|
return GST_FLOW_ERROR;
|
||
|
}
|
||
|
|
||
|
if (!gst_video_frame_map (&out_frame, &priv->video_info, sysmem_buf,
|
||
|
GST_MAP_WRITE)) {
|
||
|
GST_ERROR_OBJECT (self, "Couldn't map frame");
|
||
|
gst_video_frame_unmap (&in_frame);
|
||
|
gst_clear_buffer (&buffer);
|
||
|
gst_clear_buffer (&sysmem_buf);
|
||
|
return GST_FLOW_ERROR;
|
||
|
}
|
||
|
|
||
|
auto copy_ret = gst_video_frame_copy (&out_frame, &in_frame);
|
||
|
gst_video_frame_unmap (&out_frame);
|
||
|
gst_video_frame_unmap (&in_frame);
|
||
|
|
||
|
if (!copy_ret) {
|
||
|
GST_ERROR_OBJECT (self, "Couldn't copy frame");
|
||
|
gst_clear_buffer (&buffer);
|
||
|
gst_clear_buffer (&sysmem_buf);
|
||
|
return GST_FLOW_ERROR;
|
||
|
}
|
||
|
|
||
|
gst_buffer_unref (buffer);
|
||
|
buffer = sysmem_buf;
|
||
|
}
|
||
|
|
||
|
GST_BUFFER_DTS (buffer) = GST_CLOCK_TIME_NONE;
|
||
|
GST_BUFFER_PTS (buffer) = next_capture_ts;
|
||
|
GST_BUFFER_DURATION (buffer) = dur;
|
||
|
|
||
|
auto after_capture = gst_util_get_timestamp ();
|
||
|
latency = after_capture - before_capture;
|
||
|
|
||
|
{
|
||
|
std::lock_guard < std::recursive_mutex > lk (priv->lock);
|
||
|
if (!GST_CLOCK_TIME_IS_VALID (priv->latency) || priv->latency < latency) {
|
||
|
priv->latency = latency;
|
||
|
gst_element_post_message (GST_ELEMENT_CAST (self),
|
||
|
gst_message_new_latency (GST_OBJECT_CAST (self)));
|
||
|
}
|
||
|
}
|
||
|
|
||
|
*buf = buffer;
|
||
|
|
||
|
return GST_FLOW_OK;
|
||
|
}
|