Split global .gitignore file into per-directory files
[libav.git] / libswscale / swscale-test.c
1 /*
2 * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <inttypes.h>
25 #include <stdarg.h>
26
27 #undef HAVE_AV_CONFIG_H
28 #include "libavutil/imgutils.h"
29 #include "libavutil/mem.h"
30 #include "libavutil/avutil.h"
31 #include "libavutil/crc.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/lfg.h"
34 #include "swscale.h"
35
36 /* HACK Duplicated from swscale_internal.h.
37 * Should be removed when a cleaner pixel format system exists. */
38 #define isGray(x) \
39 ((x) == AV_PIX_FMT_GRAY8 || \
40 (x) == AV_PIX_FMT_YA8 || \
41 (x) == AV_PIX_FMT_GRAY16BE || \
42 (x) == AV_PIX_FMT_GRAY16LE || \
43 (x) == AV_PIX_FMT_YA16BE || \
44 (x) == AV_PIX_FMT_YA16LE)
45 #define hasChroma(x) \
46 (!(isGray(x) || \
47 (x) == AV_PIX_FMT_MONOBLACK || \
48 (x) == AV_PIX_FMT_MONOWHITE))
49 #define isALPHA(x) \
50 ((x) == AV_PIX_FMT_BGR32 || \
51 (x) == AV_PIX_FMT_BGR32_1 || \
52 (x) == AV_PIX_FMT_RGB32 || \
53 (x) == AV_PIX_FMT_RGB32_1 || \
54 (x) == AV_PIX_FMT_YUVA420P)
55
56 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1,
57 int stride2, int w, int h)
58 {
59 int x, y;
60 uint64_t ssd = 0;
61
62 for (y = 0; y < h; y++) {
63 for (x = 0; x < w; x++) {
64 int d = src1[x + y * stride1] - src2[x + y * stride2];
65 ssd += d * d;
66 }
67 }
68 return ssd;
69 }
70
71 struct Results {
72 uint64_t ssdY;
73 uint64_t ssdU;
74 uint64_t ssdV;
75 uint64_t ssdA;
76 uint32_t crc;
77 };
78
79 // test by ref -> src -> dst -> out & compare out against ref
80 // ref & out are YV12
81 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
82 enum AVPixelFormat srcFormat, enum AVPixelFormat dstFormat,
83 int srcW, int srcH, int dstW, int dstH, int flags,
84 struct Results *r)
85 {
86 const AVPixFmtDescriptor *desc_yuva420p = av_pix_fmt_desc_get(AV_PIX_FMT_YUVA420P);
87 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(srcFormat);
88 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(dstFormat);
89 static enum AVPixelFormat cur_srcFormat;
90 static int cur_srcW, cur_srcH;
91 static uint8_t *src[4];
92 static int srcStride[4];
93 uint8_t *dst[4] = { 0 };
94 uint8_t *out[4] = { 0 };
95 int dstStride[4];
96 int i;
97 uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
98 struct SwsContext *dstContext = NULL, *outContext = NULL;
99 uint32_t crc = 0;
100 int res = 0;
101
102 if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
103 struct SwsContext *srcContext = NULL;
104 int p;
105
106 for (p = 0; p < 4; p++)
107 av_freep(&src[p]);
108
109 av_image_fill_linesizes(srcStride, srcFormat, srcW);
110 for (p = 0; p < 4; p++) {
111 if (srcStride[p])
112 src[p] = av_mallocz(srcStride[p] * srcH + 16);
113 if (srcStride[p] && !src[p]) {
114 perror("Malloc");
115 res = -1;
116 goto end;
117 }
118 }
119 srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
120 srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
121 if (!srcContext) {
122 fprintf(stderr, "Failed to get %s ---> %s\n",
123 desc_yuva420p->name,
124 desc_src->name);
125 res = -1;
126 goto end;
127 }
128 sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
129 sws_freeContext(srcContext);
130
131 cur_srcFormat = srcFormat;
132 cur_srcW = srcW;
133 cur_srcH = srcH;
134 }
135
136 av_image_fill_linesizes(dstStride, dstFormat, dstW);
137 for (i = 0; i < 4; i++) {
138 /* Image buffers passed into libswscale can be allocated any way you
139 * prefer, as long as they're aligned enough for the architecture, and
140 * they're freed appropriately (such as using av_free for buffers
141 * allocated with av_malloc). */
142 /* An extra 16 bytes is being allocated because some scalers may write
143 * out of bounds. */
144 if (dstStride[i])
145 dst[i] = av_mallocz(dstStride[i] * dstH + 16);
146 if (dstStride[i] && !dst[i]) {
147 perror("Malloc");
148 res = -1;
149
150 goto end;
151 }
152 }
153
154 dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
155 flags, NULL, NULL, NULL);
156 if (!dstContext) {
157 fprintf(stderr, "Failed to get %s ---> %s\n",
158 desc_src->name, desc_dst->name);
159 res = -1;
160 goto end;
161 }
162
163 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
164 desc_src->name, srcW, srcH,
165 desc_dst->name, dstW, dstH,
166 flags);
167 fflush(stdout);
168
169 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
170
171 for (i = 0; i < 4 && dstStride[i]; i++)
172 crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
173 dstStride[i] * dstH);
174
175 if (r && crc == r->crc) {
176 ssdY = r->ssdY;
177 ssdU = r->ssdU;
178 ssdV = r->ssdV;
179 ssdA = r->ssdA;
180 } else {
181 for (i = 0; i < 4; i++) {
182 if (refStride[i])
183 out[i] = av_mallocz(refStride[i] * h);
184 if (refStride[i] && !out[i]) {
185 perror("Malloc");
186 res = -1;
187 goto end;
188 }
189 }
190 outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
191 AV_PIX_FMT_YUVA420P, SWS_BILINEAR,
192 NULL, NULL, NULL);
193 if (!outContext) {
194 fprintf(stderr, "Failed to get %s ---> %s\n",
195 desc_dst->name,
196 desc_yuva420p->name);
197 res = -1;
198 goto end;
199 }
200 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
201
202 ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
203 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
204 //FIXME check that output is really gray
205 ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
206 (w + 1) >> 1, (h + 1) >> 1);
207 ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
208 (w + 1) >> 1, (h + 1) >> 1);
209 }
210 if (isALPHA(srcFormat) && isALPHA(dstFormat))
211 ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
212
213 ssdY /= w * h;
214 ssdU /= w * h / 4;
215 ssdV /= w * h / 4;
216 ssdA /= w * h;
217
218 sws_freeContext(outContext);
219
220 for (i = 0; i < 4; i++)
221 if (refStride[i])
222 av_free(out[i]);
223 }
224
225 printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
226 crc, ssdY, ssdU, ssdV, ssdA);
227
228 end:
229 sws_freeContext(dstContext);
230
231 for (i = 0; i < 4; i++)
232 if (dstStride[i])
233 av_free(dst[i]);
234
235 return res;
236 }
237
238 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
239 enum AVPixelFormat srcFormat_in,
240 enum AVPixelFormat dstFormat_in)
241 {
242 const int flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC,
243 SWS_X, SWS_POINT, SWS_AREA, 0 };
244 const int srcW = w;
245 const int srcH = h;
246 const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
247 const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
248 enum AVPixelFormat srcFormat, dstFormat;
249 const AVPixFmtDescriptor *desc_src, *desc_dst;
250
251 for (srcFormat = srcFormat_in != AV_PIX_FMT_NONE ? srcFormat_in : 0;
252 srcFormat < AV_PIX_FMT_NB; srcFormat++) {
253 if (!sws_isSupportedInput(srcFormat) ||
254 !sws_isSupportedOutput(srcFormat))
255 continue;
256
257 desc_src = av_pix_fmt_desc_get(srcFormat);
258
259 for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
260 dstFormat < AV_PIX_FMT_NB; dstFormat++) {
261 int i, j, k;
262 int res = 0;
263
264 if (!sws_isSupportedInput(dstFormat) ||
265 !sws_isSupportedOutput(dstFormat))
266 continue;
267
268 desc_dst = av_pix_fmt_desc_get(dstFormat);
269
270 printf("%s -> %s\n", desc_src->name, desc_dst->name);
271 fflush(stdout);
272
273 for (k = 0; flags[k] && !res; k++)
274 for (i = 0; dstW[i] && !res; i++)
275 for (j = 0; dstH[j] && !res; j++)
276 res = doTest(ref, refStride, w, h,
277 srcFormat, dstFormat,
278 srcW, srcH, dstW[i], dstH[j], flags[k],
279 NULL);
280 if (dstFormat_in != AV_PIX_FMT_NONE)
281 break;
282 }
283 if (srcFormat_in != AV_PIX_FMT_NONE)
284 break;
285 }
286 }
287
288 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
289 enum AVPixelFormat srcFormat_in,
290 enum AVPixelFormat dstFormat_in)
291 {
292 char buf[256];
293
294 while (fgets(buf, sizeof(buf), fp)) {
295 struct Results r;
296 enum AVPixelFormat srcFormat;
297 char srcStr[12];
298 int srcW, srcH;
299 enum AVPixelFormat dstFormat;
300 char dstStr[12];
301 int dstW, dstH;
302 int flags;
303 int ret;
304
305 ret = sscanf(buf,
306 " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
307 " SSD=%"PRId64 ", %"PRId64 ", %"PRId64 ", %"PRId64 "\n",
308 srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
309 &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
310 if (ret != 12) {
311 srcStr[0] = dstStr[0] = 0;
312 ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
313 }
314
315 srcFormat = av_get_pix_fmt(srcStr);
316 dstFormat = av_get_pix_fmt(dstStr);
317
318 if (srcFormat == AV_PIX_FMT_NONE || dstFormat == AV_PIX_FMT_NONE) {
319 fprintf(stderr, "malformed input file\n");
320 return -1;
321 }
322 if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
323 (dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
324 continue;
325 if (ret != 12) {
326 printf("%s", buf);
327 continue;
328 }
329
330 doTest(ref, refStride, w, h,
331 srcFormat, dstFormat,
332 srcW, srcH, dstW, dstH, flags,
333 &r);
334 }
335
336 return 0;
337 }
338
339 #define W 96
340 #define H 96
341
342 int main(int argc, char **argv)
343 {
344 enum AVPixelFormat srcFormat = AV_PIX_FMT_NONE;
345 enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
346 uint8_t *rgb_data = av_malloc(W * H * 4);
347 uint8_t *rgb_src[4] = { rgb_data, NULL, NULL, NULL };
348 int rgb_stride[4] = { 4 * W, 0, 0, 0 };
349 uint8_t *data = av_malloc(4 * W * H);
350 uint8_t *src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
351 int stride[4] = { W, W, W, W };
352 int x, y;
353 struct SwsContext *sws;
354 AVLFG rand;
355 int res = -1;
356 int i;
357
358 if (!rgb_data || !data)
359 return -1;
360
361 sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
362 AV_PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
363
364 av_lfg_init(&rand, 1);
365
366 for (y = 0; y < H; y++)
367 for (x = 0; x < W * 4; x++)
368 rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
369 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
370 sws_freeContext(sws);
371 av_free(rgb_data);
372
373 for (i = 1; i < argc; i += 2) {
374 if (argv[i][0] != '-' || i + 1 == argc)
375 goto bad_option;
376 if (!strcmp(argv[i], "-ref")) {
377 FILE *fp = fopen(argv[i + 1], "r");
378 if (!fp) {
379 fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
380 goto error;
381 }
382 res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
383 fclose(fp);
384 goto end;
385 } else if (!strcmp(argv[i], "-src")) {
386 srcFormat = av_get_pix_fmt(argv[i + 1]);
387 if (srcFormat == AV_PIX_FMT_NONE) {
388 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
389 return -1;
390 }
391 } else if (!strcmp(argv[i], "-dst")) {
392 dstFormat = av_get_pix_fmt(argv[i + 1]);
393 if (dstFormat == AV_PIX_FMT_NONE) {
394 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
395 return -1;
396 }
397 } else {
398 bad_option:
399 fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
400 goto error;
401 }
402 }
403
404 selfTest(src, stride, W, H, srcFormat, dstFormat);
405 end:
406 res = 0;
407 error:
408 av_free(data);
409
410 return res;
411 }