2 * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
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++) {
107 srcStride[p] = FFALIGN(srcStride[p], 16);
109 src[p] = av_mallocz(srcStride[p]*srcH+16);
110 if (srcStride[p] && !src[p]) {
117 srcContext = sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH,
118 srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
120 fprintf(stderr, "Failed to get %s ---> %s\n",
121 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
122 av_pix_fmt_descriptors[srcFormat].name);
127 sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
128 sws_freeContext(srcContext);
130 cur_srcFormat = srcFormat;
135 av_image_fill_linesizes(dstStride, dstFormat, dstW);
136 for (i=0; i<4; i++) {
137 /* Image buffers passed into libswscale can be allocated any way you
138 * prefer, as long as they're aligned enough for the architecture, and
139 * they're freed appropriately (such as using av_free for buffers
140 * allocated with av_malloc). */
141 /* An extra 16 bytes is being allocated because some scalers may write
143 dstStride[i] = FFALIGN(dstStride[i], 16);
145 dst[i]= av_mallocz(dstStride[i]*dstH+16);
146 if (dstStride[i] && !dst[i]) {
154 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
156 fprintf(stderr, "Failed to get %s ---> %s\n",
157 av_pix_fmt_descriptors[srcFormat].name,
158 av_pix_fmt_descriptors[dstFormat].name);
164 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
165 av_pix_fmt_descriptors[srcFormat].name, srcW, srcH,
166 av_pix_fmt_descriptors[dstFormat].name, dstW, dstH,
170 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
172 for (i = 0; i < 4 && dstStride[i]; i++) {
173 crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i], dstStride[i] * dstH);
176 if (r && crc == r->crc) {
182 for (i=0; i<4; i++) {
183 refStride[i] = FFALIGN(refStride[i], 16);
185 out[i]= av_mallocz(refStride[i]*h);
186 if (refStride[i] && !out[i]) {
193 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
195 fprintf(stderr, "Failed to get %s ---> %s\n",
196 av_pix_fmt_descriptors[dstFormat].name,
197 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
202 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
204 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
205 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
206 //FIXME check that output is really gray
207 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
208 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
210 if (isALPHA(srcFormat) && isALPHA(dstFormat))
211 ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
218 sws_freeContext(outContext);
220 for (i=0; i<4; i++) {
226 printf(" CRC=%08x SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
227 crc, ssdY, ssdU, ssdV, ssdA);
231 sws_freeContext(dstContext);
233 for (i=0; i<4; i++) {
241 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
242 enum PixelFormat srcFormat_in,
243 enum PixelFormat dstFormat_in)
245 const int flags[] = { SWS_FAST_BILINEAR,
246 SWS_BILINEAR, SWS_BICUBIC,
247 SWS_X , SWS_POINT , SWS_AREA, 0 };
250 const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
251 const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
252 enum PixelFormat srcFormat, dstFormat;
254 for (srcFormat = srcFormat_in != PIX_FMT_NONE ? srcFormat_in : 0;
255 srcFormat < PIX_FMT_NB; srcFormat++) {
256 if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat))
259 for (dstFormat = dstFormat_in != PIX_FMT_NONE ? dstFormat_in : 0;
260 dstFormat < PIX_FMT_NB; dstFormat++) {
264 if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat))
268 av_pix_fmt_descriptors[srcFormat].name,
269 av_pix_fmt_descriptors[dstFormat].name);
272 for (k = 0; flags[k] && !res; k++) {
273 for (i = 0; dstW[i] && !res; i++)
274 for (j = 0; dstH[j] && !res; j++)
275 res = doTest(ref, refStride, w, h,
276 srcFormat, dstFormat,
277 srcW, srcH, dstW[i], dstH[j], flags[k],
280 if (dstFormat_in != PIX_FMT_NONE)
283 if (srcFormat_in != PIX_FMT_NONE)
288 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
289 enum PixelFormat srcFormat_in,
290 enum PixelFormat dstFormat_in)
294 while (fgets(buf, sizeof(buf), fp)) {
296 enum PixelFormat srcFormat;
299 enum PixelFormat dstFormat;
305 ret = sscanf(buf, " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
306 " SSD=%"PRId64", %"PRId64", %"PRId64", %"PRId64"\n",
307 srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
308 &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
310 srcStr[0] = dstStr[0] = 0;
311 ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
314 srcFormat = av_get_pix_fmt(srcStr);
315 dstFormat = av_get_pix_fmt(dstStr);
317 if (srcFormat == PIX_FMT_NONE || dstFormat == PIX_FMT_NONE) {
318 fprintf(stderr, "malformed input file\n");
321 if ((srcFormat_in != PIX_FMT_NONE && srcFormat_in != srcFormat) ||
322 (dstFormat_in != PIX_FMT_NONE && dstFormat_in != dstFormat))
329 doTest(ref, refStride, w, h,
330 srcFormat, dstFormat,
331 srcW, srcH, dstW, dstH, flags,
341 int main(int argc, char **argv)
343 enum PixelFormat srcFormat = PIX_FMT_NONE;
344 enum PixelFormat dstFormat = PIX_FMT_NONE;
345 uint8_t *rgb_data = av_malloc (W*H*4);
346 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
347 int rgb_stride[3]={4*W, 0, 0};
348 uint8_t *data = av_malloc (4*W*H);
349 uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
350 int stride[4]={W, W, W, W};
352 struct SwsContext *sws;
357 if (!rgb_data || !data)
360 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
362 av_lfg_init(&rand, 1);
364 for (y=0; y<H; y++) {
365 for (x=0; x<W*4; x++) {
366 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);
373 for (i = 1; i < argc; i += 2) {
374 if (argv[i][0] != '-' || i+1 == argc)
376 if (!strcmp(argv[i], "-ref")) {
377 FILE *fp = fopen(argv[i+1], "r");
379 fprintf(stderr, "could not open '%s'\n", argv[i+1]);
382 res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
385 } else if (!strcmp(argv[i], "-src")) {
386 srcFormat = av_get_pix_fmt(argv[i+1]);
387 if (srcFormat == PIX_FMT_NONE) {
388 fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
391 } else if (!strcmp(argv[i], "-dst")) {
392 dstFormat = av_get_pix_fmt(argv[i+1]);
393 if (dstFormat == PIX_FMT_NONE) {
394 fprintf(stderr, "invalid pixel format %s\n", argv[i+1]);
399 fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
404 selfTest(src, stride, W, H, srcFormat, dstFormat);