2 * Copyright (C) 2003-2011 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. */
39 ((x) == AV_PIX_FMT_GRAY8 || \
40 (x) == AV_PIX_FMT_Y400A || \
41 (x) == AV_PIX_FMT_GRAY16BE || \
42 (x) == AV_PIX_FMT_GRAY16LE)
43 #define hasChroma(x) \
45 (x) == AV_PIX_FMT_MONOBLACK || \
46 (x) == AV_PIX_FMT_MONOWHITE))
48 ((x) == AV_PIX_FMT_BGR32 || \
49 (x) == AV_PIX_FMT_BGR32_1 || \
50 (x) == AV_PIX_FMT_RGB32 || \
51 (x) == AV_PIX_FMT_RGB32_1 || \
52 (x) == AV_PIX_FMT_YUVA420P)
54 static uint64_t getSSD(const uint8_t *src1, const 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 AVPixelFormat srcFormat, enum AVPixelFormat dstFormat,
81 int srcW, int srcH, int dstW, int dstH, int flags,
84 const AVPixFmtDescriptor *desc_yuva420p = av_pix_fmt_desc_get(AV_PIX_FMT_YUVA420P);
85 const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(srcFormat);
86 const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(dstFormat);
87 static enum AVPixelFormat cur_srcFormat;
88 static int cur_srcW, cur_srcH;
89 static uint8_t *src[4];
90 static int srcStride[4];
91 uint8_t *dst[4] = { 0 };
92 uint8_t *out[4] = { 0 };
93 int dstStride[4] = {0};
95 uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
96 struct SwsContext *dstContext = NULL, *outContext = NULL;
100 if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
101 struct SwsContext *srcContext = NULL;
104 for (p = 0; p < 4; p++)
107 av_image_fill_linesizes(srcStride, srcFormat, srcW);
108 for (p = 0; p < 4; p++) {
109 srcStride[p] = FFALIGN(srcStride[p], 16);
111 src[p] = av_mallocz(srcStride[p] * srcH + 16);
112 if (srcStride[p] && !src[p]) {
118 srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
119 srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
121 fprintf(stderr, "Failed to get %s ---> %s\n",
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,
155 flags, NULL, NULL, NULL);
157 fprintf(stderr, "Failed to get %s ---> %s\n",
158 desc_src->name, desc_dst->name);
163 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
164 desc_src->name, srcW, srcH,
165 desc_dst->name, dstW, dstH,
169 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
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);
175 if (r && crc == r->crc) {
181 for (i = 0; i < 4; i++) {
182 refStride[i] = FFALIGN(refStride[i], 16);
184 out[i] = av_mallocz(refStride[i] * h);
185 if (refStride[i] && !out[i]) {
191 outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
192 AV_PIX_FMT_YUVA420P, SWS_BILINEAR,
195 fprintf(stderr, "Failed to get %s ---> %s\n",
197 desc_yuva420p->name);
201 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
203 ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
204 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
205 //FIXME check that output is really gray
206 ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
207 (w + 1) >> 1, (h + 1) >> 1);
208 ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
209 (w + 1) >> 1, (h + 1) >> 1);
211 if (isALPHA(srcFormat) && isALPHA(dstFormat))
212 ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
219 sws_freeContext(outContext);
221 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);
230 sws_freeContext(dstContext);
232 for (i = 0; i < 4; i++)
239 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
240 enum AVPixelFormat srcFormat_in,
241 enum AVPixelFormat dstFormat_in)
243 const int flags[] = { SWS_FAST_BILINEAR, 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 AVPixelFormat srcFormat, dstFormat;
250 const AVPixFmtDescriptor *desc_src, *desc_dst;
252 for (srcFormat = srcFormat_in != AV_PIX_FMT_NONE ? srcFormat_in : 0;
253 srcFormat < AV_PIX_FMT_NB; srcFormat++) {
254 if (!sws_isSupportedInput(srcFormat) ||
255 !sws_isSupportedOutput(srcFormat))
258 desc_src = av_pix_fmt_desc_get(srcFormat);
260 for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
261 dstFormat < AV_PIX_FMT_NB; dstFormat++) {
265 if (!sws_isSupportedInput(dstFormat) ||
266 !sws_isSupportedOutput(dstFormat))
269 desc_dst = av_pix_fmt_desc_get(dstFormat);
271 printf("%s -> %s\n", desc_src->name, desc_dst->name);
274 for (k = 0; flags[k] && !res; k++)
275 for (i = 0; dstW[i] && !res; i++)
276 for (j = 0; dstH[j] && !res; j++)
277 res = doTest(ref, refStride, w, h,
278 srcFormat, dstFormat,
279 srcW, srcH, dstW[i], dstH[j], flags[k],
281 if (dstFormat_in != AV_PIX_FMT_NONE)
284 if (srcFormat_in != AV_PIX_FMT_NONE)
289 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
290 enum AVPixelFormat srcFormat_in,
291 enum AVPixelFormat dstFormat_in)
295 while (fgets(buf, sizeof(buf), fp)) {
297 enum AVPixelFormat srcFormat;
300 enum AVPixelFormat dstFormat;
307 " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
308 " SSD=%"PRId64 ", %"PRId64 ", %"PRId64 ", %"PRId64 "\n",
309 srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
310 &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
312 srcStr[0] = dstStr[0] = 0;
313 ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
316 srcFormat = av_get_pix_fmt(srcStr);
317 dstFormat = av_get_pix_fmt(dstStr);
319 if (srcFormat == AV_PIX_FMT_NONE || dstFormat == AV_PIX_FMT_NONE ||
320 srcW > 8192U || srcH > 8192U || dstW > 8192U || dstH > 8192U) {
321 fprintf(stderr, "malformed input file\n");
324 if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
325 (dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
332 doTest(ref, refStride, w, h,
333 srcFormat, dstFormat,
334 srcW, srcH, dstW, dstH, flags,
344 int main(int argc, char **argv)
346 enum AVPixelFormat srcFormat = AV_PIX_FMT_NONE;
347 enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
348 uint8_t *rgb_data = av_malloc(W * H * 4);
349 const uint8_t * const rgb_src[4] = { rgb_data, NULL, NULL, NULL };
350 int rgb_stride[4] = { 4 * W, 0, 0, 0 };
351 uint8_t *data = av_malloc(4 * W * H);
352 uint8_t *src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
353 int stride[4] = { W, W, W, W };
355 struct SwsContext *sws;
361 if (!rgb_data || !data)
364 for (i = 1; i < argc; i += 2) {
365 if (argv[i][0] != '-' || i + 1 == argc)
367 if (!strcmp(argv[i], "-ref")) {
368 fp = fopen(argv[i + 1], "r");
370 fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
373 } else if (!strcmp(argv[i], "-src")) {
374 srcFormat = av_get_pix_fmt(argv[i + 1]);
375 if (srcFormat == AV_PIX_FMT_NONE) {
376 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
379 } else if (!strcmp(argv[i], "-dst")) {
380 dstFormat = av_get_pix_fmt(argv[i + 1]);
381 if (dstFormat == AV_PIX_FMT_NONE) {
382 fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
387 fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
392 sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
393 AV_PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
395 av_lfg_init(&rand, 1);
397 for (y = 0; y < H; y++)
398 for (x = 0; x < W * 4; x++)
399 rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
400 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
401 sws_freeContext(sws);
405 res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
408 selfTest(src, stride, W, H, srcFormat, dstFormat);