/*****************************************************************************
* importer_priv.h
*****************************************************************************
* Copyright (C) 2021 VLC authors and VideoLAN
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_GL_IMPORTER_PRIV_H
#define VLC_GL_IMPORTER_PRIV_H
#include "importer.h"
#include "gl_api.h"
#include "gl_common.h"
#include "gl_util.h"
#include "interop.h"
#include "picture.h"
struct vlc_gl_importer {
struct vlc_gl_format glfmt;
struct vlc_gl_interop *interop;
/* For convenience, same as interop->api and interop->api->vt */
const struct vlc_gl_api *api;
const opengl_vtable_t *vt;
struct vlc_gl_picture pic;
struct {
unsigned int i_x_offset;
unsigned int i_y_offset;
unsigned int i_visible_width;
unsigned int i_visible_height;
} last_source;
/* All matrices below are stored in column-major order. */
float mtx_orientation[2*3];
float mtx_coords_map[2*3];
float mtx_transform[2*3];
bool mtx_transform_defined;
/**
* The complete transformation matrix is stored in pic.mtx.
*
* tex_coords = pic_to_tex × pic_coords
*
* / tex_x \ / a b c \ / pic_x \
* \ tex_y / = \ d e f / × | pic_y |
* \ 1 /
*
* Semantically, it represents the result of:
*
* get_transform_matrix() * mtx_coords_map * mtx_orientation
*
* (The intermediate matrices are implicitly expanded to 3x3 with [0 0 1]
* as the last row.)
*
* It is stored in column-major order: [a, d, b, e, c, f].
*/
bool pic_mtx_defined;
};
#endif
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