Libav
display.h
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1 /*
2  * Copyright (c) 2014 Vittorio Giovara <vittorio.giovara@gmail.com>
3  *
4  * This file is part of Libav.
5  *
6  * Libav is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * Libav is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVUTIL_DISPLAY_H
22 #define AVUTIL_DISPLAY_H
23 
24 #include <stdint.h>
25 
65 double av_display_rotation_get(const int32_t matrix[9]);
66 
75 void av_display_rotation_set(int32_t matrix[9], double angle);
76 
84 void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip);
85 
86 #endif /* AVUTIL_DISPLAY_H */
void av_display_rotation_set(int32_t matrix[9], double angle)
Initialize a transformation matrix describing a pure rotation by the specified angle (in degrees)...
Definition: display.c:52
double av_display_rotation_get(const int32_t matrix[9])
The display transformation matrix specifies an affine transformation that should be applied to video ...
Definition: display.c:34
int32_t
void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip)
Flip the input matrix horizontally and/or vertically.
Definition: display.c:67