2 * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of Libav.
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.
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.
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
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"
36 /* HACK Duplicated from swscale_internal.h.
37 * Should be removed when a cleaner pixel format system exists. */
39 ((x) == PIX_FMT_GRAY8 || \
40 (x) == PIX_FMT_Y400A || \
41 (x) == PIX_FMT_GRAY16BE || \
42 (x) == PIX_FMT_GRAY16LE)
43 #define hasChroma(x) \
45 (x) == PIX_FMT_MONOBLACK || \
46 (x) == PIX_FMT_MONOWHITE))
48 ((x) == PIX_FMT_BGR32 || \
49 (x) == PIX_FMT_BGR32_1 || \
50 (x) == PIX_FMT_RGB32 || \
51 (x) == PIX_FMT_RGB32_1 || \
52 (x) == PIX_FMT_YUVA420P)
54 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1,
55 int stride2, int w, int h)
60 for (y = 0; y < h; y++) {
61 for (x = 0; x < w; x++) {
62 int d = src1[x + y * stride1] - src2[x + y * stride2];
77 // test by ref -> src -> dst -> out & compare out against ref
79 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
80 enum PixelFormat srcFormat, enum PixelFormat dstFormat,
81 int srcW, int srcH, int dstW, int dstH, int flags,
84 static enum PixelFormat cur_srcFormat;
85 static int cur_srcW, cur_srcH;
86 static uint8_t *src[4];
87 static int srcStride[4];
88 uint8_t *dst[4] = { 0 };
89 uint8_t *out[4] = { 0 };
92 uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
93 struct SwsContext *dstContext = NULL, *outContext = NULL;
97 if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
98 struct SwsContext *srcContext = NULL;
101 for (p = 0; p < 4; p++)
104 av_image_fill_linesizes(srcStride, srcFormat, srcW);
105 for (p = 0; p < 4; p++) {
107 src[p] = av_mallocz(srcStride[p] * srcH + 16);
108 if (srcStride[p] && !src[p]) {
114 srcContext = sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH,
115 srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
117 fprintf(stderr, "Failed to get %s ---> %s\n",
118 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
119 av_pix_fmt_descriptors[srcFormat].name);
123 sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
124 sws_freeContext(srcContext);
126 cur_srcFormat = srcFormat;
131 av_image_fill_linesizes(dstStride, dstFormat, dstW);
132 for (i = 0; i < 4; i++) {
133 /* Image buffers passed into libswscale can be allocated any way you
134 * prefer, as long as they're aligned enough for the architecture, and
135 * they're freed appropriately (such as using av_free for buffers
136 * allocated with av_malloc). */
137 /* An extra 16 bytes is being allocated because some scalers may write
140 dst[i] = av_mallocz(dstStride[i] * dstH + 16);
141 if (dstStride[i] && !dst[i]) {
149 dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
150 flags, NULL, NULL, NULL);
152 fprintf(stderr, "Failed to get %s ---> %s\n",
153 av_pix_fmt_descriptors[srcFormat].name,
154 av_pix_fmt_descriptors[dstFormat].name);
159 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
160 av_pix_fmt_descriptors[srcFormat].name, srcW, srcH,
161 av_pix_fmt_descriptors[dstFormat].name, dstW, dstH,
165 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
167 for (i = 0; i < 4 && dstStride[i]; i++)
168 crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
169 dstStride[i] * dstH);
171 if (r && crc == r->crc) {
177 for (i = 0; i < 4; i++) {
179 out[i] = av_mallocz(refStride[i] * h);
180 if (refStride[i] && !out[i]) {
186 outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
187 PIX_FMT_YUVA420P, SWS_BILINEAR,
190 fprintf(stderr, "Failed to get %s ---> %s\n",
191 av_pix_fmt_descriptors[dstFormat].name,
192 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
196 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
198 ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
199 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
200 //FIXME check that output is really gray
201 ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
202 (w + 1) >> 1, (h + 1) >> 1);
203 ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
204 (w + 1) >> 1, (h + 1) >> 1);
206 if (isALPHA(srcFormat) && isALPHA(dstFormat))
207 ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
214 sws_freeContext(outContext);
216 for (i = 0; i < 4; i++)
221 printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
222 crc, ssdY, ssdU, ssdV, ssdA);
225 sws_freeContext(dstContext);
227 for (i = 0; i < 4; i++)
234 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
235 enum PixelFormat srcFormat_in,
236 enum PixelFormat dstFormat_in)
238 const int flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC,
239 SWS_X, SWS_POINT, SWS_AREA, 0 };
242 const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
243 const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
244 enum PixelFormat srcFormat, dstFormat;
246 for (srcFormat = srcFormat_in != PIX_FMT_NONE ? srcFormat_in : 0;
247 srcFormat < PIX_FMT_NB; srcFormat++) {
248 if (!sws_isSupportedInput(srcFormat) ||
249 !sws_isSupportedOutput(srcFormat))
252 for (dstFormat = dstFormat_in != PIX_FMT_NONE ? dstFormat_in : 0;
253 dstFormat < PIX_FMT_NB; dstFormat++) {
257 if (!sws_isSupportedInput(dstFormat) ||
258 !sws_isSupportedOutput(dstFormat))
262 av_pix_fmt_descriptors[srcFormat].name,
263 av_pix_fmt_descriptors[dstFormat].name);
266 for (k = 0; flags[k] && !res; k++)
267 for (i = 0; dstW[i] && !res; i++)
268 for (j = 0; dstH[j] && !res; j++)
269 res = doTest(ref, refStride, w, h,
270 srcFormat, dstFormat,
271 srcW, srcH, dstW[i], dstH[j], flags[k],
273 if (dstFormat_in != PIX_FMT_NONE)
276 if (srcFormat_in != PIX_FMT_NONE)
281 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
282 enum PixelFormat srcFormat_in,
283 enum PixelFormat dstFormat_in)
287 while (fgets(buf, sizeof(buf), fp)) {
289 enum PixelFormat srcFormat;
292 enum PixelFormat dstFormat;
299 " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
300 " SSD=%"PRId64 ", %"PRId64 ", %"PRId64 ", %"PRId64 "\n",
301 srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
302 &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
304 srcStr[0] = dstStr[0] = 0;
305 ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
308 srcFormat = av_get_pix_fmt(srcStr);
309 dstFormat = av_get_pix_fmt(dstStr);
311 if (srcFormat == PIX_FMT_NONE || dstFormat == PIX_FMT_NONE) {
312 fprintf(stderr, "malformed input file\n");
315 if ((srcFormat_in != PIX_FMT_NONE && srcFormat_in != srcFormat) ||
316 (dstFormat_in != PIX_FMT_NONE && dstFormat_in != dstFormat))
323 doTest(ref, refStride, w, h,
324 srcFormat, dstFormat,
325 srcW, srcH, dstW, dstH, flags,
335 int main(int argc, char **argv)
337 enum PixelFormat srcFormat = PIX_FMT_NONE;
338 enum PixelFormat dstFormat = PIX_FMT_NONE;
339 uint8_t *rgb_data = av_malloc(W * H * 4);
340 uint8_t *rgb_src[3] = { rgb_data, NULL, NULL };
341 int rgb_stride[3] = { 4 * W, 0, 0 };
342 uint8_t *data = av_malloc(4 * W * H);
343 uint8_t *src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
344 int stride[4] = { W, W, W, W };
346 struct SwsContext *sws;
351 if (!rgb_data || !data)
354 sws = sws_getContext(W / 12, H / 12, PIX_FMT_RGB32, W, H,
355 PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
357 av_lfg_init(&rand, 1);
359 for (y = 0; y < H; y++)
360 for (x = 0; x < W * 4; x++)
361 rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
362 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
363 sws_freeContext(sws);
366 for (i = 1; i < argc; i += 2) {
367 if (argv[i][0] != '-' || i + 1 == argc)
369 if (!strcmp(argv[i], "-ref")) {
370 FILE *fp = fopen(argv[i + 1], "r");
372 fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
375 res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
378 } else if (!strcmp(argv[i], "-src")) {
379 srcFormat = av_get_pix_fmt(argv[i + 1]);
380 if (srcFormat == PIX_FMT_NONE) {
381 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
384 } else if (!strcmp(argv[i], "-dst")) {
385 dstFormat = av_get_pix_fmt(argv[i + 1]);
386 if (dstFormat == PIX_FMT_NONE) {
387 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
392 fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
397 selfTest(src, stride, W, H, srcFormat, dstFormat);