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/*
* Copyright (c) 2014 Vittorio Giovara <vittorio.giovara@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include "libavutil/display.c"
static void print_matrix(int32_t matrix[9])
{
int i, j;
for (i = 0; i < 3; ++i) {
for (j = 0; j < 3 - 1; ++j)
printf("%d ", matrix[i*3 + j]);
printf("%d\n", matrix[i*3 + j]);
}
}
int main(void)
{
int32_t matrix[9];
// Set the matrix to 90 degrees
av_display_rotation_set(matrix, 90);
print_matrix(matrix);
printf("degrees: %f\n", av_display_rotation_get(matrix));
// Set the matrix to -45 degrees
av_display_rotation_set(matrix, -45);
print_matrix(matrix);
printf("degrees: %f\n", av_display_rotation_get(matrix));
// flip horizontal
av_display_matrix_flip(matrix, 1, 0);
print_matrix(matrix);
printf("degrees: %f\n", av_display_rotation_get(matrix));
// flip vertical
av_display_matrix_flip(matrix, 0, 1);
print_matrix(matrix);
printf("degrees: %f\n", av_display_rotation_get(matrix));
return 0;
}
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