early-access version 1432

externals/ffmpeg/libavutil/tests/display.c

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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 "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;
+
+}