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Diffstat (limited to 'ffmpeg1/tests/rotozoom.c')
| -rw-r--r-- | ffmpeg1/tests/rotozoom.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/ffmpeg1/tests/rotozoom.c b/ffmpeg1/tests/rotozoom.c deleted file mode 100644 index cfa7f81..0000000 --- a/ffmpeg1/tests/rotozoom.c +++ /dev/null @@ -1,195 +0,0 @@ -/* - * 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; -} |