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8ebea54758
We can avoid a render pass if downstream supports the affine transformation meta and increase the performance of some pipelines involving gltransformation. Implemented by checking for the affine transformation in the allocation query from downstream and combining our matrix with that of upstream's (or creating our own).
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
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* GStreamer
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* Copyright (C) 2014 Lubosz Sarnecki <lubosz@gmail.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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#ifndef _GST_GL_TRANSFORMATION_H_
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#define _GST_GL_TRANSFORMATION_H_
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#include <gst/gl/gstglfilter.h>
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#include <graphene.h>
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G_BEGIN_DECLS
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#define GST_TYPE_GL_TRANSFORMATION (gst_gl_transformation_get_type())
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#define GST_GL_TRANSFORMATION(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_TRANSFORMATION,GstGLTransformation))
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#define GST_IS_GL_TRANSFORMATION(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_TRANSFORMATION))
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#define GST_GL_TRANSFORMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_GL_TRANSFORMATION,GstGLTransformationClass))
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#define GST_IS_GL_TRANSFORMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_GL_TRANSFORMATION))
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#define GST_GL_TRANSFORMATION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_GL_TRANSFORMATION,GstGLTransformationClass))
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typedef struct _GstGLTransformation GstGLTransformation;
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typedef struct _GstGLTransformationClass GstGLTransformationClass;
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struct _GstGLTransformation
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{
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GstGLFilter filter;
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GstGLShader *shader;
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GLuint vao;
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GLuint vbo_indices;
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GLuint vertex_buffer;
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GLint attr_position;
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GLint attr_texture;
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guint in_tex;
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gfloat xrotation;
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gfloat yrotation;
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gfloat zrotation;
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gfloat xscale;
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gfloat yscale;
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gfloat xtranslation;
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gfloat ytranslation;
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gfloat ztranslation;
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gfloat xpivot;
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gfloat ypivot;
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gfloat zpivot;
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/* perspective */
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gfloat fov;
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gfloat aspect;
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gfloat znear;
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gfloat zfar;
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gboolean ortho;
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graphene_matrix_t model_matrix;
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graphene_matrix_t view_matrix;
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graphene_matrix_t projection_matrix;
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graphene_matrix_t mvp_matrix;
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gboolean downstream_supports_affine_meta;
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gboolean caps_change;
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};
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struct _GstGLTransformationClass
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{
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GstGLFilterClass filter_class;
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};
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GType gst_gl_transformation_get_type (void);
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G_END_DECLS
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#endif /* _GST_GL_TRANSFORMATION_H_ */
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