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110 lines
4.2 KiB
C
110 lines
4.2 KiB
C
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/* GStreamer
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* Copyright (C) 2023 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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#pragma once
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#include <gst/d3d11/gstd3d11.h>
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#include <gst/video/video.h>
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#include <gst/base/base.h>
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#include "gstdwrite-utils.h"
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#include "gstdwrite-enums.h"
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G_BEGIN_DECLS
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enum class GstDWriteBlendMode
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{
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NOT_SUPPORTED,
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/* attach meta with d3d11 texture buffer. */
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ATTACH_TEXTURE,
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/* attach meta with bitmap buffer */
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ATTACH_BITMAP,
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/* software blending */
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SW_BLEND,
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/* 1) renders text on BGRA
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* 2) blends */
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BLEND,
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/* 1) convert texture to BGRA
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* 2) render text on another BGRA texture
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* 3) blends two textures
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* 3) converts back to original format */
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CONVERT,
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/* 1) converts texture to RGBA64_LE
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* 2) renders text on BGRA texture
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* 3) blends two textures
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* 3) converts back original format */
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CONVERT_64,
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};
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#define GST_TYPE_DWRITE_OVERLAY_OBJECT (gst_dwrite_overlay_object_get_type())
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G_DECLARE_FINAL_TYPE (GstDWriteOverlayObject,
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gst_dwrite_overlay_object, GST, DWRITE_OVERLAY_OBJECT, GstObject);
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GstDWriteOverlayObject * gst_dwrite_overlay_object_new (void);
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gboolean gst_dwrite_overlay_object_start (GstDWriteOverlayObject * object,
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IDWriteFactory * dwrite_factory);
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gboolean gst_dwrite_overlay_object_stop (GstDWriteOverlayObject * object);
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void gst_dwrite_overlay_object_set_context (GstDWriteOverlayObject * object,
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GstElement * elem,
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GstContext * context);
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gboolean gst_dwrite_overlay_object_handle_query (GstDWriteOverlayObject * object,
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GstElement * elem,
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GstQuery * query);
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gboolean gst_dwrite_overlay_object_decide_allocation (GstDWriteOverlayObject * object,
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GstElement * elem,
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GstQuery * query);
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gboolean gst_dwrite_overlay_object_propose_allocation (GstDWriteOverlayObject * object,
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GstElement * elem,
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GstQuery * query);
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gboolean gst_dwrite_overlay_object_set_caps (GstDWriteOverlayObject * object,
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GstElement * elem,
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GstCaps * in_caps,
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GstCaps * out_caps,
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GstVideoInfo * info,
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GstDWriteBlendMode * selected_mode);
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gboolean gst_dwrite_overlay_object_update_device (GstDWriteOverlayObject * object,
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GstBuffer * buffer);
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GstFlowReturn gst_dwrite_overlay_object_prepare_output (GstDWriteOverlayObject * object,
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GstBaseTransform * trans,
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gpointer trans_class,
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GstBuffer * inbuf,
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GstBuffer ** outbuf);
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gboolean gst_dwrite_overlay_object_draw (GstDWriteOverlayObject * object,
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GstBuffer * buffer,
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IDWriteTextLayout * layout,
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gint x,
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gint y);
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G_END_DECLS
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