Imported Debian version 2.5.2~trusty
[deb_ffmpeg.git] / ffmpeg / libswscale / swscale-test.c
1 /*
2 * Copyright (C) 2003-2011 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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(const uint8_t *src1, const 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] = {0};
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 srcStride[p] = FFALIGN(srcStride[p], 16);
112 if (srcStride[p])
113 src[p] = av_mallocz(srcStride[p] * srcH + 16);
114 if (srcStride[p] && !src[p]) {
115 perror("Malloc");
116 res = -1;
117 goto end;
118 }
119 }
120 srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
121 srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
122 if (!srcContext) {
123 fprintf(stderr, "Failed to get %s ---> %s\n",
124 desc_yuva420p->name,
125 desc_src->name);
126 res = -1;
127 goto end;
128 }
129 sws_scale(srcContext, (const uint8_t * const*)ref, refStride, 0, h, src, srcStride);
130 sws_freeContext(srcContext);
131
132 cur_srcFormat = srcFormat;
133 cur_srcW = srcW;
134 cur_srcH = srcH;
135 }
136
137 av_image_fill_linesizes(dstStride, dstFormat, dstW);
138 for (i = 0; i < 4; i++) {
139 /* Image buffers passed into libswscale can be allocated any way you
140 * prefer, as long as they're aligned enough for the architecture, and
141 * they're freed appropriately (such as using av_free for buffers
142 * allocated with av_malloc). */
143 /* An extra 16 bytes is being allocated because some scalers may write
144 * out of bounds. */
145 dstStride[i] = FFALIGN(dstStride[i], 16);
146 if (dstStride[i])
147 dst[i] = av_mallocz(dstStride[i] * dstH + 16);
148 if (dstStride[i] && !dst[i]) {
149 perror("Malloc");
150 res = -1;
151
152 goto end;
153 }
154 }
155
156 dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
157 flags, NULL, NULL, NULL);
158 if (!dstContext) {
159 fprintf(stderr, "Failed to get %s ---> %s\n",
160 desc_src->name, desc_dst->name);
161 res = -1;
162 goto end;
163 }
164
165 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
166 desc_src->name, srcW, srcH,
167 desc_dst->name, dstW, dstH,
168 flags);
169 fflush(stdout);
170
171 sws_scale(dstContext, (const uint8_t * const*)src, srcStride, 0, srcH, dst, dstStride);
172
173 for (i = 0; i < 4 && dstStride[i]; i++)
174 crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
175 dstStride[i] * dstH);
176
177 if (r && crc == r->crc) {
178 ssdY = r->ssdY;
179 ssdU = r->ssdU;
180 ssdV = r->ssdV;
181 ssdA = r->ssdA;
182 } else {
183 for (i = 0; i < 4; i++) {
184 refStride[i] = FFALIGN(refStride[i], 16);
185 if (refStride[i])
186 out[i] = av_mallocz(refStride[i] * h);
187 if (refStride[i] && !out[i]) {
188 perror("Malloc");
189 res = -1;
190 goto end;
191 }
192 }
193 outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
194 AV_PIX_FMT_YUVA420P, SWS_BILINEAR,
195 NULL, NULL, NULL);
196 if (!outContext) {
197 fprintf(stderr, "Failed to get %s ---> %s\n",
198 desc_dst->name,
199 desc_yuva420p->name);
200 res = -1;
201 goto end;
202 }
203 sws_scale(outContext, (const uint8_t * const*)dst, dstStride, 0, dstH, out, refStride);
204
205 ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
206 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
207 //FIXME check that output is really gray
208 ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
209 (w + 1) >> 1, (h + 1) >> 1);
210 ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
211 (w + 1) >> 1, (h + 1) >> 1);
212 }
213 if (isALPHA(srcFormat) && isALPHA(dstFormat))
214 ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
215
216 ssdY /= w * h;
217 ssdU /= w * h / 4;
218 ssdV /= w * h / 4;
219 ssdA /= w * h;
220
221 sws_freeContext(outContext);
222
223 for (i = 0; i < 4; i++)
224 if (refStride[i])
225 av_free(out[i]);
226 }
227
228 printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
229 crc, ssdY, ssdU, ssdV, ssdA);
230
231 end:
232 sws_freeContext(dstContext);
233
234 for (i = 0; i < 4; i++)
235 if (dstStride[i])
236 av_free(dst[i]);
237
238 return res;
239 }
240
241 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
242 enum AVPixelFormat srcFormat_in,
243 enum AVPixelFormat dstFormat_in)
244 {
245 const int flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC,
246 SWS_X, SWS_POINT, SWS_AREA, 0 };
247 const int srcW = w;
248 const int srcH = h;
249 const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
250 const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
251 enum AVPixelFormat srcFormat, dstFormat;
252 const AVPixFmtDescriptor *desc_src, *desc_dst;
253
254 for (srcFormat = srcFormat_in != AV_PIX_FMT_NONE ? srcFormat_in : 0;
255 srcFormat < AV_PIX_FMT_NB; srcFormat++) {
256 if (!sws_isSupportedInput(srcFormat) ||
257 !sws_isSupportedOutput(srcFormat))
258 continue;
259
260 desc_src = av_pix_fmt_desc_get(srcFormat);
261
262 for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
263 dstFormat < AV_PIX_FMT_NB; dstFormat++) {
264 int i, j, k;
265 int res = 0;
266
267 if (!sws_isSupportedInput(dstFormat) ||
268 !sws_isSupportedOutput(dstFormat))
269 continue;
270
271 desc_dst = av_pix_fmt_desc_get(dstFormat);
272
273 printf("%s -> %s\n", desc_src->name, desc_dst->name);
274 fflush(stdout);
275
276 for (k = 0; flags[k] && !res; k++)
277 for (i = 0; dstW[i] && !res; i++)
278 for (j = 0; dstH[j] && !res; j++)
279 res = doTest(ref, refStride, w, h,
280 srcFormat, dstFormat,
281 srcW, srcH, dstW[i], dstH[j], flags[k],
282 NULL);
283 if (dstFormat_in != AV_PIX_FMT_NONE)
284 break;
285 }
286 if (srcFormat_in != AV_PIX_FMT_NONE)
287 break;
288 }
289 }
290
291 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
292 enum AVPixelFormat srcFormat_in,
293 enum AVPixelFormat dstFormat_in)
294 {
295 char buf[256];
296
297 while (fgets(buf, sizeof(buf), fp)) {
298 struct Results r;
299 enum AVPixelFormat srcFormat;
300 char srcStr[12];
301 int srcW, srcH;
302 enum AVPixelFormat dstFormat;
303 char dstStr[12];
304 int dstW, dstH;
305 int flags;
306 int ret;
307
308 ret = sscanf(buf,
309 " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
310 " SSD=%"SCNd64 ", %"SCNd64 ", %"SCNd64 ", %"SCNd64 "\n",
311 srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
312 &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
313 if (ret != 12) {
314 srcStr[0] = dstStr[0] = 0;
315 ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
316 }
317
318 srcFormat = av_get_pix_fmt(srcStr);
319 dstFormat = av_get_pix_fmt(dstStr);
320
321 if (srcFormat == AV_PIX_FMT_NONE || dstFormat == AV_PIX_FMT_NONE ||
322 srcW > 8192U || srcH > 8192U || dstW > 8192U || dstH > 8192U) {
323 fprintf(stderr, "malformed input file\n");
324 return -1;
325 }
326 if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
327 (dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
328 continue;
329 if (ret != 12) {
330 printf("%s", buf);
331 continue;
332 }
333
334 doTest(ref, refStride, w, h,
335 srcFormat, dstFormat,
336 srcW, srcH, dstW, dstH, flags,
337 &r);
338 }
339
340 return 0;
341 }
342
343 #define W 96
344 #define H 96
345
346 int main(int argc, char **argv)
347 {
348 enum AVPixelFormat srcFormat = AV_PIX_FMT_NONE;
349 enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
350 uint8_t *rgb_data = av_malloc(W * H * 4);
351 const uint8_t * const rgb_src[4] = { rgb_data, NULL, NULL, NULL };
352 int rgb_stride[4] = { 4 * W, 0, 0, 0 };
353 uint8_t *data = av_malloc(4 * W * H);
354 uint8_t *src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
355 int stride[4] = { W, W, W, W };
356 int x, y;
357 struct SwsContext *sws;
358 AVLFG rand;
359 int res = -1;
360 int i;
361 FILE *fp = NULL;
362
363 if (!rgb_data || !data)
364 return -1;
365
366 for (i = 1; i < argc; i += 2) {
367 if (argv[i][0] != '-' || i + 1 == argc)
368 goto bad_option;
369 if (!strcmp(argv[i], "-ref")) {
370 fp = fopen(argv[i + 1], "r");
371 if (!fp) {
372 fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
373 goto error;
374 }
375 } else if (!strcmp(argv[i], "-src")) {
376 srcFormat = av_get_pix_fmt(argv[i + 1]);
377 if (srcFormat == AV_PIX_FMT_NONE) {
378 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
379 return -1;
380 }
381 } else if (!strcmp(argv[i], "-dst")) {
382 dstFormat = av_get_pix_fmt(argv[i + 1]);
383 if (dstFormat == AV_PIX_FMT_NONE) {
384 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
385 return -1;
386 }
387 } else {
388 bad_option:
389 fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
390 goto error;
391 }
392 }
393
394 sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
395 AV_PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
396
397 av_lfg_init(&rand, 1);
398
399 for (y = 0; y < H; y++)
400 for (x = 0; x < W * 4; x++)
401 rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
402 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
403 sws_freeContext(sws);
404 av_free(rgb_data);
405
406 if(fp) {
407 res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
408 fclose(fp);
409 } else {
410 selfTest(src, stride, W, H, srcFormat, dstFormat);
411 res = 0;
412 }
413 error:
414 av_free(data);
415
416 return res;
417 }