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. */
40 || (x)==PIX_FMT_GRAY16BE \
41 || (x)==PIX_FMT_GRAY16LE \
43 #define hasChroma(x) (!( \
45 || (x)==PIX_FMT_MONOBLACK \
46 || (x)==PIX_FMT_MONOWHITE \
48 #define isALPHA(x) ( \
50 || (x)==PIX_FMT_BGR32_1 \
51 || (x)==PIX_FMT_RGB32 \
52 || (x)==PIX_FMT_RGB32_1 \
53 || (x)==PIX_FMT_YUVA420P \
56 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
63 int d= src1[x + y*stride1] - src2[x + y*stride2];
78 // test by ref -> src -> dst -> out & compare out against ref
80 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
81 enum PixelFormat srcFormat, enum PixelFormat dstFormat,
82 int srcW, int srcH, int dstW, int dstH, int flags,
85 static enum PixelFormat cur_srcFormat;
86 static int cur_srcW, cur_srcH;
87 static uint8_t *src[4];
88 static int srcStride[4];
89 uint8_t *dst[4] = {0};
90 uint8_t *out[4] = {0};
93 uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
94 struct SwsContext *dstContext = NULL, *outContext = NULL;
98 if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
99 struct SwsContext *srcContext = NULL;
102 for (p = 0; p < 4; p++)
105 av_image_fill_linesizes(srcStride, srcFormat, srcW);
106 for (p = 0; p < 4; p++) {
108 src[p] = av_mallocz(srcStride[p]*srcH+16);
109 if (srcStride[p] && !src[p]) {
116 srcContext = sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH,
117 srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
119 fprintf(stderr, "Failed to get %s ---> %s\n",
120 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
121 av_pix_fmt_descriptors[srcFormat].name);
126 sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
127 sws_freeContext(srcContext);
129 cur_srcFormat = srcFormat;
134 av_image_fill_linesizes(dstStride, dstFormat, dstW);
135 for (i=0; i<4; i++) {
136 /* Image buffers passed into libswscale can be allocated any way you
137 * prefer, as long as they're aligned enough for the architecture, and
138 * they're freed appropriately (such as using av_free for buffers
139 * allocated with av_malloc). */
140 /* An extra 16 bytes is being allocated because some scalers may write
143 dst[i]= av_mallocz(dstStride[i]*dstH+16);
144 if (dstStride[i] && !dst[i]) {
152 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
154 fprintf(stderr, "Failed to get %s ---> %s\n",
155 av_pix_fmt_descriptors[srcFormat].name,
156 av_pix_fmt_descriptors[dstFormat].name);
162 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
163 av_pix_fmt_descriptors[srcFormat].name, srcW, srcH,
164 av_pix_fmt_descriptors[dstFormat].name, dstW, dstH,
168 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
170 for (i = 0; i < 4 && dstStride[i]; i++) {
171 crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i], dstStride[i] * dstH);
174 if (r && crc == r->crc) {
180 for (i=0; i<4; i++) {
182 out[i]= av_mallocz(refStride[i]*h);
183 if (refStride[i] && !out[i]) {
190 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
192 fprintf(stderr, "Failed to get %s ---> %s\n",
193 av_pix_fmt_descriptors[dstFormat].name,
194 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
199 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
201 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
202 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
203 //FIXME check that output is really gray
204 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
205 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
207 if (isALPHA(srcFormat) && isALPHA(dstFormat))
208 ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
215 sws_freeContext(outContext);
217 for (i=0; i<4; i++) {
223 printf(" CRC=%08x SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
224 crc, ssdY, ssdU, ssdV, ssdA);
228 sws_freeContext(dstContext);
230 for (i=0; i<4; i++) {
238 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
239 enum PixelFormat srcFormat_in,
240 enum PixelFormat dstFormat_in)
242 const int flags[] = { SWS_FAST_BILINEAR,
243 SWS_BILINEAR, SWS_BICUBIC,
244 SWS_X , SWS_POINT , SWS_AREA, 0 };
247 const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
248 const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
249 enum PixelFormat srcFormat, dstFormat;
251 for (srcFormat = srcFormat_in != PIX_FMT_NONE ? srcFormat_in : 0;
252 srcFormat < PIX_FMT_NB; srcFormat++) {
253 if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat))
256 for (dstFormat = dstFormat_in != PIX_FMT_NONE ? dstFormat_in : 0;
257 dstFormat < PIX_FMT_NB; dstFormat++) {
261 if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat))
265 av_pix_fmt_descriptors[srcFormat].name,
266 av_pix_fmt_descriptors[dstFormat].name);
269 for (k = 0; flags[k] && !res; k++) {
270 for (i = 0; dstW[i] && !res; i++)
271 for (j = 0; dstH[j] && !res; j++)
272 res = doTest(ref, refStride, w, h,
273 srcFormat, dstFormat,
274 srcW, srcH, dstW[i], dstH[j], flags[k],
277 if (dstFormat_in != PIX_FMT_NONE)
280 if (srcFormat_in != PIX_FMT_NONE)
285 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
286 enum PixelFormat srcFormat_in,
287 enum PixelFormat dstFormat_in)
291 while (fgets(buf, sizeof(buf), fp)) {
293 enum PixelFormat srcFormat;
296 enum PixelFormat dstFormat;
302 ret = sscanf(buf, " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
303 " SSD=%"PRId64", %"PRId64", %"PRId64", %"PRId64"\n",
304 srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
305 &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
307 srcStr[0] = dstStr[0] = 0;
308 ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
311 srcFormat = av_get_pix_fmt(srcStr);
312 dstFormat = av_get_pix_fmt(dstStr);
314 if (srcFormat == PIX_FMT_NONE || dstFormat == PIX_FMT_NONE) {
315 fprintf(stderr, "malformed input file\n");
318 if ((srcFormat_in != PIX_FMT_NONE && srcFormat_in != srcFormat) ||
319 (dstFormat_in != PIX_FMT_NONE && dstFormat_in != dstFormat))
326 doTest(ref, refStride, w, h,
327 srcFormat, dstFormat,
328 srcW, srcH, dstW, dstH, flags,
338 int main(int argc, char **argv)
340 enum PixelFormat srcFormat = PIX_FMT_NONE;
341 enum PixelFormat dstFormat = PIX_FMT_NONE;
342 uint8_t *rgb_data = av_malloc (W*H*4);
343 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
344 int rgb_stride[3]={4*W, 0, 0};
345 uint8_t *data = av_malloc (4*W*H);
346 uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
347 int stride[4]={W, W, W, W};
349 struct SwsContext *sws;
354 if (!rgb_data || !data)
357 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
359 av_lfg_init(&rand, 1);
361 for (y=0; y<H; y++) {
362 for (x=0; x<W*4; x++) {
363 rgb_data[ x + y*4*W]= av_lfg_get(&rand);
366 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
367 sws_freeContext(sws);
370 for (i = 1; i < argc; i += 2) {
371 if (argv[i][0] != '-' || i+1 == argc)
373 if (!strcmp(argv[i], "-ref")) {
374 FILE *fp = fopen(argv[i+1], "r");
376 fprintf(stderr, "could not open '%s'\n", argv[i+1]);
379 res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
382 } else if (!strcmp(argv[i], "-src")) {
383 srcFormat = av_get_pix_fmt(argv[i+1]);
384 if (srcFormat == PIX_FMT_NONE) {
385 fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
388 } else if (!strcmp(argv[i], "-dst")) {
389 dstFormat = av_get_pix_fmt(argv[i+1]);
390 if (dstFormat == PIX_FMT_NONE) {
391 fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
396 fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
401 selfTest(src, stride, W, H, srcFormat, dstFormat);