62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*
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* Copyright (c) 2014 Vittorio Giovara <vittorio.giovara@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/display.c"
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static void print_matrix(int32_t matrix[9])
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{
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int i, j;
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for (i = 0; i < 3; ++i) {
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for (j = 0; j < 3 - 1; ++j)
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printf("%d ", matrix[i*3 + j]);
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printf("%d\n", matrix[i*3 + j]);
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}
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}
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int main(void)
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{
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int32_t matrix[9];
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// Set the matrix to 90 degrees
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av_display_rotation_set(matrix, 90);
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print_matrix(matrix);
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printf("degrees: %f\n", av_display_rotation_get(matrix));
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// Set the matrix to -45 degrees
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av_display_rotation_set(matrix, -45);
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print_matrix(matrix);
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printf("degrees: %f\n", av_display_rotation_get(matrix));
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// flip horizontal
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av_display_matrix_flip(matrix, 1, 0);
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print_matrix(matrix);
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printf("degrees: %f\n", av_display_rotation_get(matrix));
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// flip vertical
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av_display_matrix_flip(matrix, 0, 1);
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print_matrix(matrix);
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printf("degrees: %f\n", av_display_rotation_get(matrix));
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return 0;
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}
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