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_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) \
47 (x) == AV_PIX_FMT_MONOBLACK || \
48 (x) == AV_PIX_FMT_MONOWHITE))
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)
56 static uint64_t getSSD(const uint8_t *src1, const uint8_t *src2, int stride1,
57 int stride2, int w, int h)
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];
79 // test by ref -> src -> dst -> out & compare out against ref
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,
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};
97 uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
98 struct SwsContext *dstContext = NULL, *outContext = NULL;
102 if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
103 struct SwsContext *srcContext = NULL;
106 for (p = 0; p < 4; p++)
109 av_image_fill_linesizes(srcStride, srcFormat, srcW);
110 for (p = 0; p < 4; p++) {
111 srcStride[p] = FFALIGN(srcStride[p], 16);
113 src[p] = av_mallocz(srcStride[p] * srcH + 16);
114 if (srcStride[p] && !src[p]) {
120 srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
121 srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
123 fprintf(stderr, "Failed to get %s ---> %s\n",
129 sws_scale(srcContext, (const uint8_t * const*)ref, refStride, 0, h, src, srcStride);
130 sws_freeContext(srcContext);
132 cur_srcFormat = srcFormat;
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
145 dstStride[i] = FFALIGN(dstStride[i], 16);
147 dst[i] = av_mallocz(dstStride[i] * dstH + 16);
148 if (dstStride[i] && !dst[i]) {
156 dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
157 flags, NULL, NULL, NULL);
159 fprintf(stderr, "Failed to get %s ---> %s\n",
160 desc_src->name, desc_dst->name);
165 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
166 desc_src->name, srcW, srcH,
167 desc_dst->name, dstW, dstH,
171 sws_scale(dstContext, (const uint8_t * const*)src, srcStride, 0, srcH, dst, dstStride);
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);
177 if (r && crc == r->crc) {
183 for (i = 0; i < 4; i++) {
184 refStride[i] = FFALIGN(refStride[i], 16);
186 out[i] = av_mallocz(refStride[i] * h);
187 if (refStride[i] && !out[i]) {
193 outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
194 AV_PIX_FMT_YUVA420P, SWS_BILINEAR,
197 fprintf(stderr, "Failed to get %s ---> %s\n",
199 desc_yuva420p->name);
203 sws_scale(outContext, (const uint8_t * const*)dst, dstStride, 0, dstH, out, refStride);
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);
213 if (isALPHA(srcFormat) && isALPHA(dstFormat))
214 ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
221 sws_freeContext(outContext);
223 for (i = 0; i < 4; i++)
228 printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
229 crc, ssdY, ssdU, ssdV, ssdA);
232 sws_freeContext(dstContext);
234 for (i = 0; i < 4; i++)
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)
245 const int flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC,
246 SWS_X, SWS_POINT, SWS_AREA, 0 };
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;
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))
260 desc_src = av_pix_fmt_desc_get(srcFormat);
262 for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
263 dstFormat < AV_PIX_FMT_NB; dstFormat++) {
267 if (!sws_isSupportedInput(dstFormat) ||
268 !sws_isSupportedOutput(dstFormat))
271 desc_dst = av_pix_fmt_desc_get(dstFormat);
273 printf("%s -> %s\n", desc_src->name, desc_dst->name);
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],
283 if (dstFormat_in != AV_PIX_FMT_NONE)
286 if (srcFormat_in != AV_PIX_FMT_NONE)
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)
297 while (fgets(buf, sizeof(buf), fp)) {
299 enum AVPixelFormat srcFormat;
302 enum AVPixelFormat dstFormat;
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);
314 srcStr[0] = dstStr[0] = 0;
315 ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
318 srcFormat = av_get_pix_fmt(srcStr);
319 dstFormat = av_get_pix_fmt(dstStr);
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");
326 if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
327 (dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
334 doTest(ref, refStride, w, h,
335 srcFormat, dstFormat,
336 srcW, srcH, dstW, dstH, flags,
346 int main(int argc, char **argv)
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 };
357 struct SwsContext *sws;
363 if (!rgb_data || !data)
366 for (i = 1; i < argc; i += 2) {
367 if (argv[i][0] != '-' || i + 1 == argc)
369 if (!strcmp(argv[i], "-ref")) {
370 fp = fopen(argv[i + 1], "r");
372 fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
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]);
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]);
389 fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
394 sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
395 AV_PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
397 av_lfg_init(&rand, 1);
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);
407 res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
410 selfTest(src, stride, W, H, srcFormat, dstFormat);