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81f3a7f02b
Instead of using a parent structure that has to be derived by API consumers, this change propse a simplification by using the common pattern of GTK of passing a function pointer and user data which will be passed as its parameter. That user data contains the state and the function will be called to update that state.
68 lines
2 KiB
C
68 lines
2 KiB
C
/*
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* gstvaapiblend.h - Video processing blend
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*
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* Copyright (C) 2019 Intel Corporation
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* Author: U. Artie Eoff <ullysses.a.eoff@intel.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 Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#ifndef GST_VAAPI_BLEND_H
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#define GST_VAAPI_BLEND_H
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#include <gst/vaapi/gstvaapisurface.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VAAPI_BLEND \
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(gst_vaapi_blend_get_type ())
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#define GST_VAAPI_BLEND(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VAAPI_BLEND, GstVaapiBlend))
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#define GST_IS_VAAPI_BLEND(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VAAPI_BLEND))
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typedef struct _GstVaapiBlend GstVaapiBlend;
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typedef struct _GstVaapiBlendSurface GstVaapiBlendSurface;
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struct _GstVaapiBlendSurface
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{
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GstVaapiSurface const *surface;
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const GstVaapiRectangle *crop;
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GstVaapiRectangle target;
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gdouble alpha;
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};
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typedef GstVaapiBlendSurface* (*GstVaapiBlendSurfaceNextFunc)(gpointer data);
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GstVaapiBlend *
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gst_vaapi_blend_new (GstVaapiDisplay * display);
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void
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gst_vaapi_blend_replace (GstVaapiBlend ** old_blend_ptr,
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GstVaapiBlend * new_blend);
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gboolean
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gst_vaapi_blend_process (GstVaapiBlend * blend, GstVaapiSurface * output,
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GstVaapiBlendSurfaceNextFunc next, gpointer user_data);
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GType
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gst_vaapi_blend_get_type (void) G_GNUC_CONST;
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVaapiBlend, gst_object_unref)
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G_END_DECLS
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#endif /* GST_VAAPI_FILTER_H */
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