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/avutil.h"
29 #include "libavutil/lfg.h"
32 /* HACK Duplicated from swscale_internal.h.
33 * Should be removed when a cleaner pixel format system exists. */
34 const char *sws_format_name(enum PixelFormat format);
37 || (x)==PIX_FMT_GRAY16BE \
38 || (x)==PIX_FMT_GRAY16LE \
40 #define hasChroma(x) (!( \
42 || (x)==PIX_FMT_MONOBLACK \
43 || (x)==PIX_FMT_MONOWHITE \
45 #define isALPHA(x) ( \
47 || (x)==PIX_FMT_BGR32_1 \
48 || (x)==PIX_FMT_RGB32 \
49 || (x)==PIX_FMT_RGB32_1 \
50 || (x)==PIX_FMT_YUVA420P \
53 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
58 //printf("%d %d\n", w, h);
62 int d= src1[x + y*stride1] - src2[x + y*stride2];
64 //printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
71 // test by ref -> src -> dst -> out & compare out against ref
73 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h, int srcFormat, int dstFormat,
74 int srcW, int srcH, int dstW, int dstH, int flags)
76 uint8_t *src[4] = {0};
77 uint8_t *dst[4] = {0};
78 uint8_t *out[4] = {0};
79 int srcStride[4], dstStride[4];
81 uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
82 struct SwsContext *srcContext = NULL, *dstContext = NULL,
88 // avoid stride % bpp != 0
89 if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24)
91 else if (srcFormat==PIX_FMT_RGB48BE || srcFormat==PIX_FMT_RGB48LE)
96 if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24)
98 else if (dstFormat==PIX_FMT_RGB48BE || dstFormat==PIX_FMT_RGB48LE)
101 dstStride[i]= dstW*4;
103 src[i]= malloc(srcStride[i]*srcH);
104 dst[i]= malloc(dstStride[i]*dstH);
105 out[i]= malloc(refStride[i]*h);
106 if (!src[i] || !dst[i] || !out[i]) {
114 srcContext= sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL);
116 fprintf(stderr, "Failed to get %s ---> %s\n",
117 sws_format_name(PIX_FMT_YUVA420P),
118 sws_format_name(srcFormat));
123 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
125 fprintf(stderr, "Failed to get %s ---> %s\n",
126 sws_format_name(srcFormat),
127 sws_format_name(dstFormat));
132 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, flags, NULL, NULL, NULL);
134 fprintf(stderr, "Failed to get %s ---> %s\n",
135 sws_format_name(dstFormat),
136 sws_format_name(PIX_FMT_YUVA420P));
141 // printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
142 // (int)src[0], (int)src[1], (int)src[2]);
144 sws_scale(srcContext, ref, refStride, 0, h , src, srcStride);
145 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
146 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
148 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
149 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
150 //FIXME check that output is really gray
151 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
152 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
154 if (isALPHA(srcFormat) && isALPHA(dstFormat))
155 ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
162 printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
163 sws_format_name(srcFormat), srcW, srcH,
164 sws_format_name(dstFormat), dstW, dstH,
165 flags, ssdY, ssdU, ssdV, ssdA);
170 sws_freeContext(srcContext);
171 sws_freeContext(dstContext);
172 sws_freeContext(outContext);
174 for (i=0; i<4; i++) {
183 static void selfTest(uint8_t *src[4], int stride[4], int w, int h)
185 const int flags[] = { SWS_FAST_BILINEAR,
186 SWS_BILINEAR, SWS_BICUBIC,
187 SWS_X , SWS_POINT , SWS_AREA, 0 };
190 const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
191 const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
192 enum PixelFormat srcFormat, dstFormat;
194 for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) {
195 for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) {
200 sws_format_name(srcFormat),
201 sws_format_name(dstFormat));
204 for (i = 0; dstW[i] && !res; i++)
205 for (j = 0; dstH[j] && !res; j++)
206 for (k = 0; flags[k] && !res; k++)
207 res = doTest(src, stride, w, h, srcFormat, dstFormat,
208 srcW, srcH, dstW[i], dstH[j], flags[k]);
216 int main(int argc, char **argv)
218 uint8_t *rgb_data = malloc (W*H*4);
219 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
220 int rgb_stride[3]={4*W, 0, 0};
221 uint8_t *data = malloc (4*W*H);
222 uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
223 int stride[4]={W, W, W, W};
225 struct SwsContext *sws;
228 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, 2, NULL, NULL, NULL);
230 av_lfg_init(&rand, 1);
232 for (y=0; y<H; y++) {
233 for (x=0; x<W*4; x++) {
234 rgb_data[ x + y*4*W]= av_lfg_get(&rand);
237 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
239 selfTest(src, stride, W, H);