fate: split off qtrle codec FATE tests into their own file
[libav.git] / tests / videogen.c
CommitLineData
51133a7d 1/*
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2 * Generate a synthetic YUV video sequence suitable for codec testing.
3 * NOTE: No floats are used to guarantee bitexact output.
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4 *
5 * Copyright (c) 2002 Fabrice Bellard
6 *
2912e87a 7 * This file is part of Libav.
eebfba2e 8 *
2912e87a 9 * Libav is free software; you can redistribute it and/or
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10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
2912e87a 14 * Libav is distributed in the hope that it will be useful,
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15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
2912e87a 20 * License along with Libav; if not, write to the Free Software
eebfba2e 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
51133a7d 22 */
eebfba2e 23
51133a7d 24#include <stdlib.h>
e680989d 25#include <stdint.h>
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26#include <stdio.h>
27
28#define SCALEBITS 8
29#define ONE_HALF (1 << (SCALEBITS - 1))
bb270c08 30#define FIX(x) ((int) ((x) * (1L<<SCALEBITS) + 0.5))
51133a7d 31
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32static void rgb24_to_yuv420p(uint8_t *lum, uint8_t *cb, uint8_t *cr,
33 uint8_t *src, int width, int height)
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34{
35 int wrap, wrap3, x, y;
36 int r, g, b, r1, g1, b1;
0c1a9eda 37 uint8_t *p;
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38
39 wrap = width;
40 wrap3 = width * 3;
41 p = src;
42 for(y=0;y<height;y+=2) {
43 for(x=0;x<width;x+=2) {
44 r = p[0];
45 g = p[1];
46 b = p[2];
47 r1 = r;
48 g1 = g;
49 b1 = b;
115329f1 50 lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
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51 FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
52 r = p[3];
53 g = p[4];
54 b = p[5];
55 r1 += r;
56 g1 += g;
57 b1 += b;
115329f1 58 lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
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59 FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
60 p += wrap3;
61 lum += wrap;
62
63 r = p[0];
64 g = p[1];
65 b = p[2];
66 r1 += r;
67 g1 += g;
68 b1 += b;
115329f1 69 lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
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70 FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
71 r = p[3];
72 g = p[4];
73 b = p[5];
74 r1 += r;
75 g1 += g;
76 b1 += b;
115329f1 77 lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
51133a7d 78 FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
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79
80 cb[0] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +
51133a7d 81 FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
115329f1 82 cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 -
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83 FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
84
85 cb++;
86 cr++;
87 p += -wrap3 + 2 * 3;
88 lum += -wrap + 2;
89 }
90 p += wrap3;
91 lum += wrap;
92 }
93}
94
95/* cif format */
96#define DEFAULT_WIDTH 352
97#define DEFAULT_HEIGHT 288
2ca24d91 98#define DEFAULT_NB_PICT 50 /* 2 seconds */
51133a7d 99
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100static void pgmyuv_save(const char *filename, int w, int h,
101 unsigned char *rgb_tab)
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102{
103 FILE *f;
104 int i, h2, w2;
105 unsigned char *cb, *cr;
106 unsigned char *lum_tab, *cb_tab, *cr_tab;
107
108 lum_tab = malloc(w * h);
109 cb_tab = malloc((w * h) / 4);
110 cr_tab = malloc((w * h) / 4);
111
112 rgb24_to_yuv420p(lum_tab, cb_tab, cr_tab, rgb_tab, w, h);
113
baf23f0c 114 f = fopen(filename,"wb");
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115 fprintf(f, "P5\n%d %d\n%d\n", w, (h * 3) / 2, 255);
116 fwrite(lum_tab, 1, w * h, f);
117 h2 = h / 2;
118 w2 = w / 2;
119 cb = cb_tab;
120 cr = cr_tab;
121 for(i=0;i<h2;i++) {
122 fwrite(cb, 1, w2, f);
123 fwrite(cr, 1, w2, f);
124 cb += w2;
125 cr += w2;
126 }
127 fclose(f);
128
129 free(lum_tab);
130 free(cb_tab);
131 free(cr_tab);
132}
133
134unsigned char *rgb_tab;
135int width, height, wrap;
136
6f2162b4 137static void put_pixel(int x, int y, int r, int g, int b)
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138{
139 unsigned char *p;
140
141 if (x < 0 || x >= width ||
142 y < 0 || y >= height)
143 return;
144
145 p = rgb_tab + y * wrap + x * 3;
146 p[0] = r;
147 p[1] = g;
148 p[2] = b;
149}
150
151static unsigned int myrnd(unsigned int *seed_ptr, int n)
152{
153 unsigned int seed, val;
154
155 seed = *seed_ptr;
156 seed = (seed * 314159) + 1;
157 if (n == 256) {
158 val = seed >> 24;
159 } else {
160 val = seed % n;
161 }
162 *seed_ptr = seed;
163 return val;
164}
165
166#define NOISE_X 10
167#define NOISE_Y 30
168#define NOISE_W 26
169
170#define FRAC_BITS 8
171#define FRAC_ONE (1 << FRAC_BITS)
172
173/* cosine approximate with 1-x^2 */
6f2162b4 174static int int_cos(int a)
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175{
176 int v, neg;
177 a = a & (FRAC_ONE - 1);
178 if (a >= (FRAC_ONE / 2))
179 a = FRAC_ONE - a;
180 neg = 0;
181 if (a > (FRAC_ONE / 4)) {
182 neg = -1;
183 a = (FRAC_ONE / 2) - a;
184 }
185 v = FRAC_ONE - ((a * a) >> 4);
186 v = (v ^ neg) - neg;
187 return v;
188}
189
190#define NB_OBJS 10
191
192typedef struct VObj {
193 int x, y, w, h;
194 int r, g, b;
195} VObj;
196
197VObj objs[NB_OBJS];
198
199unsigned int seed = 1;
200
6f2162b4 201static void gen_image(int num, int w, int h)
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202{
203 int r, g, b, x, y, i, dx, dy, x1, y1;
204 unsigned int seed1;
205
206 if (num == 0) {
207 for(i=0;i<NB_OBJS;i++) {
208 objs[i].x = myrnd(&seed, w);
209 objs[i].y = myrnd(&seed, h);
210 objs[i].w = myrnd(&seed, w / 4) + 10;
211 objs[i].h = myrnd(&seed, h / 4) + 10;
212 objs[i].r = myrnd(&seed, 256);
213 objs[i].g = myrnd(&seed, 256);
214 objs[i].b = myrnd(&seed, 256);
215 }
216 }
217
218 /* first a moving background with gradients */
219 /* test motion estimation */
220 dx = int_cos(num * FRAC_ONE / 50) * 35;
221 dy = int_cos(num * FRAC_ONE / 50 + FRAC_ONE / 10) * 30;
222 for(y=0;y<h;y++) {
223 for(x=0;x<w;x++) {
224 x1 = (x << FRAC_BITS) + dx;
07874f22 225 y1 = (y << FRAC_BITS) + dy;
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226 r = ((y1 * 7) >> FRAC_BITS) & 0xff;
227 g = (((x1 + y1) * 9) >> FRAC_BITS) & 0xff;
228 b = ((x1 * 5) >> FRAC_BITS) & 0xff;
229 put_pixel(x, y, r, g, b);
230 }
231 }
232
233 /* then some noise with very high intensity to test saturation */
234 seed1 = num;
235 for(y=0;y<NOISE_W;y++) {
236 for(x=0;x<NOISE_W;x++) {
237 r = myrnd(&seed1, 256);
238 g = myrnd(&seed1, 256);
239 b = myrnd(&seed1, 256);
240 put_pixel(x + NOISE_X, y + NOISE_Y, r, g, b);
241 }
242 }
115329f1 243
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244 /* then moving objects */
245 for(i=0;i<NB_OBJS;i++) {
246 VObj *p = &objs[i];
247 seed1 = i;
248 for(y=0;y<p->h;y++) {
249 for(x=0;x<p->w;x++) {
250 r = p->r;
251 g = p->g;
252 b = p->b;
253 /* add a per object noise */
254 r += myrnd(&seed1, 50);
255 g += myrnd(&seed1, 50);
256 b += myrnd(&seed1, 50);
257 put_pixel(x + p->x, y + p->y, r, g, b);
258 }
259 }
260 p->x += myrnd(&seed, 21) - 10;
261 p->y += myrnd(&seed, 21) - 10;
262 }
263}
264
265int main(int argc, char **argv)
266{
267 int w, h, i;
268 char buf[1024];
269
270 if (argc != 2) {
271 printf("usage: %s file\n"
272 "generate a test video stream\n", argv[0]);
273 exit(1);
274 }
275
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276 w = DEFAULT_WIDTH;
277 h = DEFAULT_HEIGHT;
278
279 rgb_tab = malloc(w * h * 3);
280 wrap = w * 3;
281 width = w;
282 height = h;
283
284 for(i=0;i<DEFAULT_NB_PICT;i++) {
528bbdde 285 snprintf(buf, sizeof(buf), "%s%02d.pgm", argv[1], i);
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286 gen_image(i, w, h);
287 pgmyuv_save(buf, w, h, rgb_tab);
288 }
115329f1 289
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290 free(rgb_tab);
291 return 0;
292}