| /* |
| * 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 "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; |
| |
| } |