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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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15434ce51d
Adding d3d12 backend text renderer/blender by using d3d11on12 interop. And subclassing renderer object per backend (i.e., d3d11, d3d12, and bitmap) Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6620>
124 lines
3.5 KiB
C++
124 lines
3.5 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 "gstdwriterender.h"
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GST_DEBUG_CATEGORY_EXTERN (dwrite_overlay_object_debug);
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#define GST_CAT_DEFAULT dwrite_overlay_object_debug
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static gboolean gst_dwrite_render_upload_default (GstDWriteRender * render,
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const GstVideoInfo * info, GstBuffer * in_buf, GstBuffer * out_buf);
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#define gst_dwrite_render_parent_class parent_class
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G_DEFINE_ABSTRACT_TYPE (GstDWriteRender, gst_dwrite_render, GST_TYPE_OBJECT);
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static void
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gst_dwrite_render_class_init (GstDWriteRenderClass * klass)
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{
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klass->upload = gst_dwrite_render_upload_default;
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}
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static void
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gst_dwrite_render_init (GstDWriteRender * self)
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{
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}
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GstBuffer *
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gst_dwrite_render_draw_layout (GstDWriteRender * render,
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IDWriteTextLayout * layout, gint x, gint y)
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{
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auto klass = GST_DWRITE_RENDER_GET_CLASS (render);
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return klass->draw_layout (render, layout, x, y);
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}
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gboolean
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gst_dwrite_render_blend (GstDWriteRender * render, GstBuffer * layout_buf,
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gint x, gint y, GstBuffer * output)
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{
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auto klass = GST_DWRITE_RENDER_GET_CLASS (render);
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return klass->blend (render, layout_buf, x, y, output);
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}
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gboolean
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gst_dwrite_render_update_device (GstDWriteRender * render, GstBuffer * buffer)
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{
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auto klass = GST_DWRITE_RENDER_GET_CLASS (render);
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return klass->update_device (render, buffer);
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}
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gboolean
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gst_dwrite_render_handle_allocation_query (GstDWriteRender * render,
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GstElement * elem, GstQuery * query)
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{
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auto klass = GST_DWRITE_RENDER_GET_CLASS (render);
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return klass->handle_allocation_query (render, elem, query);
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}
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gboolean
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gst_dwrite_render_can_inplace (GstDWriteRender * render, GstBuffer * buffer)
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{
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auto klass = GST_DWRITE_RENDER_GET_CLASS (render);
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return klass->can_inplace (render, buffer);
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}
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static gboolean
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gst_dwrite_render_upload_default (GstDWriteRender * self,
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const GstVideoInfo * info, GstBuffer * in_buf, GstBuffer * out_buf)
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{
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GstVideoFrame in_frame, out_frame;
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gboolean ret;
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GST_TRACE_OBJECT (self, "system copy");
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if (!gst_video_frame_map (&in_frame, info, in_buf, GST_MAP_READ)) {
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GST_ERROR_OBJECT (self, "Couldn't map input frame");
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return FALSE;
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}
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if (!gst_video_frame_map (&out_frame, info, out_buf, GST_MAP_WRITE)) {
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gst_video_frame_unmap (&in_frame);
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GST_ERROR_OBJECT (self, "Couldn't map output frame");
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return FALSE;
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}
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ret = gst_video_frame_copy (&out_frame, &in_frame);
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gst_video_frame_unmap (&in_frame);
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gst_video_frame_unmap (&out_frame);
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return ret;
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}
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gboolean
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gst_dwrite_render_upload (GstDWriteRender * render, const GstVideoInfo * info,
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GstBuffer * in_buf, GstBuffer * out_buf)
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{
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auto klass = GST_DWRITE_RENDER_GET_CLASS (render);
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return klass->upload (render, info, in_buf, out_buf);
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}
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