/*
* Generates a synthetic YUV video sequence suitable for codec testing.
- * NOTE: no floats are used to guaranty a bit exact output.
+ * NOTE: No floats are used to guarantee a bit exact output.
+ *
+ * Copyright (c) 2002 Fabrice Bellard
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
#include <stdlib.h>
+#include <stdint.h>
#include <stdio.h>
#define SCALEBITS 8
#define ONE_HALF (1 << (SCALEBITS - 1))
#define FIX(x) ((int) ((x) * (1L<<SCALEBITS) + 0.5))
-typedef unsigned char uint8_t;
static void rgb24_to_yuv420p(uint8_t *lum, uint8_t *cb, uint8_t *cr,
uint8_t *src, int width, int height)
#define DEFAULT_HEIGHT 288
#define DEFAULT_NB_PICT 50 /* 2 seconds */
-void pgmyuv_save(const char *filename, int w, int h,
- unsigned char *rgb_tab)
+static void pgmyuv_save(const char *filename, int w, int h,
+ unsigned char *rgb_tab)
{
FILE *f;
int i, h2, w2;
unsigned char *rgb_tab;
int width, height, wrap;
-void put_pixel(int x, int y, int r, int g, int b)
+static void put_pixel(int x, int y, int r, int g, int b)
{
unsigned char *p;
#define FRAC_ONE (1 << FRAC_BITS)
/* cosine approximate with 1-x^2 */
-int int_cos(int a)
+static int int_cos(int a)
{
int v, neg;
a = a & (FRAC_ONE - 1);
unsigned int seed = 1;
-void gen_image(int num, int w, int h)
+static void gen_image(int num, int w, int h)
{
int r, g, b, x, y, i, dx, dy, x1, y1;
unsigned int seed1;
for(y=0;y<h;y++) {
for(x=0;x<w;x++) {
x1 = (x << FRAC_BITS) + dx;
- y1 = (y << FRAC_BITS) + dx;
+ y1 = (y << FRAC_BITS) + dy;
r = ((y1 * 7) >> FRAC_BITS) & 0xff;
g = (((x1 + y1) * 9) >> FRAC_BITS) & 0xff;
b = ((x1 * 5) >> FRAC_BITS) & 0xff;
exit(1);
}
-#if 0
- for(i=0;i<256;i++)
- printf("cos(%d)=%d\n", i, int_cos(i));
-#endif
-
w = DEFAULT_WIDTH;
h = DEFAULT_HEIGHT;