mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-05 12:38:25 -05:00
196 lines
4.7 KiB
C
Executable File
196 lines
4.7 KiB
C
Executable File
/*
|
|
* Generate a synthetic YUV video sequence suitable for codec testing.
|
|
*
|
|
* copyright (c) Sebastien Bechet <s.bechet@av7.net>
|
|
*
|
|
* 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 <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <inttypes.h>
|
|
|
|
#include "utils.c"
|
|
|
|
#define FIXP (1 << 16)
|
|
#define MY_PI 205887 // (M_PI * FIX)
|
|
|
|
static int64_t int_pow(int64_t a, int p)
|
|
{
|
|
int64_t v = FIXP;
|
|
|
|
for (; p; p--) {
|
|
v *= a;
|
|
v /= FIXP;
|
|
}
|
|
|
|
return v;
|
|
}
|
|
|
|
static int64_t int_sin(int64_t a)
|
|
{
|
|
if (a < 0)
|
|
a = MY_PI - a; // 0..inf
|
|
a %= 2 * MY_PI; // 0..2PI
|
|
|
|
if (a >= MY_PI * 3 / 2)
|
|
a -= 2 * MY_PI; // -PI / 2 .. 3PI / 2
|
|
if (a >= MY_PI / 2)
|
|
a = MY_PI - a; // -PI / 2 .. PI / 2
|
|
|
|
return a - int_pow(a, 3) / 6 + int_pow(a, 5) / 120 - int_pow(a, 7) / 5040;
|
|
}
|
|
|
|
static unsigned char tab_r[256 * 256];
|
|
static unsigned char tab_g[256 * 256];
|
|
static unsigned char tab_b[256 * 256];
|
|
|
|
static int h_cos[360];
|
|
static int h_sin[360];
|
|
|
|
static int ipol(uint8_t *src, int x, int y)
|
|
{
|
|
int int_x = x >> 16;
|
|
int int_y = y >> 16;
|
|
int frac_x = x & 0xFFFF;
|
|
int frac_y = y & 0xFFFF;
|
|
int s00 = src[( int_x & 255) + 256 * ( int_y & 255)];
|
|
int s01 = src[((int_x + 1) & 255) + 256 * ( int_y & 255)];
|
|
int s10 = src[( int_x & 255) + 256 * ((int_y + 1) & 255)];
|
|
int s11 = src[((int_x + 1) & 255) + 256 * ((int_y + 1) & 255)];
|
|
int s0 = (((1 << 16) - frac_x) * s00 + frac_x * s01) >> 8;
|
|
int s1 = (((1 << 16) - frac_x) * s10 + frac_x * s11) >> 8;
|
|
|
|
return (((1 << 16) - frac_y) * s0 + frac_y * s1) >> 24;
|
|
}
|
|
|
|
static void gen_image(int num, int w, int h)
|
|
{
|
|
const int c = h_cos[num % 360];
|
|
const int s = h_sin[num % 360];
|
|
|
|
const int xi = -(w / 2) * c;
|
|
const int yi = (w / 2) * s;
|
|
|
|
const int xj = -(h / 2) * s;
|
|
const int yj = -(h / 2) * c;
|
|
int i, j;
|
|
|
|
int x, y;
|
|
int xprime = xj;
|
|
int yprime = yj;
|
|
|
|
for (j = 0; j < h; j++) {
|
|
x = xprime + xi + FIXP * w / 2;
|
|
xprime += s;
|
|
|
|
y = yprime + yi + FIXP * h / 2;
|
|
yprime += c;
|
|
|
|
for (i = 0; i < w; i++) {
|
|
x += c;
|
|
y -= s;
|
|
put_pixel(i, j,
|
|
ipol(tab_r, x, y),
|
|
ipol(tab_g, x, y),
|
|
ipol(tab_b, x, y));
|
|
}
|
|
}
|
|
}
|
|
|
|
#define W 256
|
|
#define H 256
|
|
|
|
static int init_demo(const char *filename)
|
|
{
|
|
int i, j;
|
|
int h;
|
|
int radian;
|
|
char line[3 * W];
|
|
|
|
FILE *input_file;
|
|
|
|
input_file = fopen(filename, "rb");
|
|
if (!input_file) {
|
|
perror(filename);
|
|
return 1;
|
|
}
|
|
|
|
if (fread(line, 1, 15, input_file) != 15)
|
|
return 1;
|
|
for (i = 0; i < H; i++) {
|
|
if (fread(line, 1, 3 * W, input_file) != 3 * W)
|
|
return 1;
|
|
for (j = 0; j < W; j++) {
|
|
tab_r[W * i + j] = line[3 * j ];
|
|
tab_g[W * i + j] = line[3 * j + 1];
|
|
tab_b[W * i + j] = line[3 * j + 2];
|
|
}
|
|
}
|
|
fclose(input_file);
|
|
|
|
/* tables sin/cos */
|
|
for (i = 0; i < 360; i++) {
|
|
radian = 2 * i * MY_PI / 360;
|
|
h = 2 * FIXP + int_sin(radian);
|
|
h_cos[i] = h * int_sin(radian + MY_PI / 2) / 2 / FIXP;
|
|
h_sin[i] = h * int_sin(radian) / 2 / FIXP;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int w, h, i;
|
|
char buf[1024];
|
|
int isdir = 0;
|
|
|
|
if (argc != 3) {
|
|
printf("usage: %s image.pnm file|dir\n"
|
|
"generate a test video stream\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
if (!freopen(argv[2], "wb", stdout))
|
|
isdir = 1;
|
|
|
|
w = DEFAULT_WIDTH;
|
|
h = DEFAULT_HEIGHT;
|
|
|
|
rgb_tab = malloc(w * h * 3);
|
|
wrap = w * 3;
|
|
width = w;
|
|
height = h;
|
|
|
|
if (init_demo(argv[1]))
|
|
return 1;
|
|
|
|
for (i = 0; i < DEFAULT_NB_PICT; i++) {
|
|
gen_image(i, w, h);
|
|
if (isdir) {
|
|
snprintf(buf, sizeof(buf), "%s%02d.pgm", argv[2], i);
|
|
pgmyuv_save(buf, w, h, rgb_tab);
|
|
} else {
|
|
pgmyuv_save(NULL, w, h, rgb_tab);
|
|
}
|
|
}
|
|
|
|
free(rgb_tab);
|
|
return 0;
|
|
}
|