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"
30 #include "swscale_internal.h"
32 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h){
36 //printf("%d %d\n", w, h);
40 int d= src1[x + y*stride1] - src2[x + y*stride2];
42 //printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
49 // test by ref -> src -> dst -> out & compare out against ref
51 static int doTest(uint8_t *ref[3], int refStride[3], int w, int h, int srcFormat, int dstFormat,
52 int srcW, int srcH, int dstW, int dstH, int flags){
56 int srcStride[3], dstStride[3];
58 uint64_t ssdY, ssdU, ssdV;
59 struct SwsContext *srcContext, *dstContext, *outContext;
64 // avoid stride % bpp != 0
65 if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24)
70 if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24)
75 src[i]= (uint8_t*) malloc(srcStride[i]*srcH);
76 dst[i]= (uint8_t*) malloc(dstStride[i]*dstH);
77 out[i]= (uint8_t*) malloc(refStride[i]*h);
78 if (!src[i] || !dst[i] || !out[i]) {
86 dstContext = outContext = NULL;
87 srcContext= sws_getContext(w, h, PIX_FMT_YUV420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL);
89 fprintf(stderr, "Failed to get %s ---> %s\n",
90 sws_format_name(PIX_FMT_YUV420P),
91 sws_format_name(srcFormat));
96 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
98 fprintf(stderr, "Failed to get %s ---> %s\n",
99 sws_format_name(srcFormat),
100 sws_format_name(dstFormat));
105 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
107 fprintf(stderr, "Failed to get %s ---> %s\n",
108 sws_format_name(dstFormat),
109 sws_format_name(PIX_FMT_YUV420P));
114 // printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
115 // (int)src[0], (int)src[1], (int)src[2]);
117 sws_scale(srcContext, ref, refStride, 0, h , src, srcStride);
118 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
119 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
121 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
122 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
123 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
125 if (srcFormat == PIX_FMT_GRAY8 || dstFormat==PIX_FMT_GRAY8) ssdU=ssdV=0; //FIXME check that output is really gray
131 printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5lld,%5lld,%5lld\n",
132 sws_format_name(srcFormat), srcW, srcH,
133 sws_format_name(dstFormat), dstW, dstH,
134 flags, ssdY, ssdU, ssdV);
139 sws_freeContext(srcContext);
140 sws_freeContext(dstContext);
141 sws_freeContext(outContext);
152 static void selfTest(uint8_t *src[3], int stride[3], int w, int h){
153 enum PixelFormat srcFormat, dstFormat;
154 int srcW, srcH, dstW, dstH;
157 for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) {
158 for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) {
160 sws_format_name(srcFormat),
161 sws_format_name(dstFormat));
166 for (dstW=w - w/3; dstW<= 4*w/3; dstW+= w/3){
167 for (dstH=h - h/3; dstH<= 4*h/3; dstH+= h/3){
168 for (flags=1; flags<33; flags*=2) {
171 res = doTest(src, stride, w, h, srcFormat, dstFormat,
172 srcW, srcH, dstW, dstH, flags);
188 int main(int argc, char **argv){
189 uint8_t *rgb_data = malloc (W*H*4);
190 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
191 int rgb_stride[3]={4*W, 0, 0};
192 uint8_t *data = malloc (3*W*H);
193 uint8_t *src[3]= {data, data+W*H, data+W*H*2};
194 int stride[3]={W, W, W};
196 struct SwsContext *sws;
198 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUV420P, 2, NULL, NULL, NULL);
201 for (x=0; x<W*4; x++){
202 rgb_data[ x + y*4*W]= random();
205 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
207 selfTest(src, stride, W, H);