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/mem.h"
29 #include "libavutil/avutil.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavutil/lfg.h"
34 /* HACK Duplicated from swscale_internal.h.
35 * Should be removed when a cleaner pixel format system exists. */
38 || (x)==PIX_FMT_GRAY16BE \
39 || (x)==PIX_FMT_GRAY16LE \
41 #define hasChroma(x) (!( \
43 || (x)==PIX_FMT_MONOBLACK \
44 || (x)==PIX_FMT_MONOWHITE \
46 #define isALPHA(x) ( \
48 || (x)==PIX_FMT_BGR32_1 \
49 || (x)==PIX_FMT_RGB32 \
50 || (x)==PIX_FMT_RGB32_1 \
51 || (x)==PIX_FMT_YUVA420P \
54 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
59 //printf("%d %d\n", w, h);
63 int d= src1[x + y*stride1] - src2[x + y*stride2];
65 //printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
72 // test by ref -> src -> dst -> out & compare out against ref
74 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
75 enum PixelFormat srcFormat, enum PixelFormat dstFormat,
76 int srcW, int srcH, int dstW, int dstH, int flags)
78 uint8_t *src[4] = {0};
79 uint8_t *dst[4] = {0};
80 uint8_t *out[4] = {0};
81 int srcStride[4], dstStride[4];
83 uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
84 struct SwsContext *srcContext = NULL, *dstContext = NULL,
90 // avoid stride % bpp != 0
91 if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24)
93 else if (srcFormat==PIX_FMT_RGB48BE || srcFormat==PIX_FMT_RGB48LE)
98 if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24)
100 else if (dstFormat==PIX_FMT_RGB48BE || dstFormat==PIX_FMT_RGB48LE)
101 dstStride[i]= dstW*6;
103 dstStride[i]= dstW*4;
105 /* Image buffers passed into libswscale can be allocated any way you
106 * prefer, as long as they're aligned enough for the architecture, and
107 * they're freed appropriately (such as using av_free for buffers
108 * allocated with av_malloc). */
109 /* An extra 16 bytes is being allocated because some scalers may write
111 src[i]= av_mallocz(srcStride[i]*srcH+16);
112 dst[i]= av_mallocz(dstStride[i]*dstH+16);
113 out[i]= av_mallocz(refStride[i]*h);
114 if (!src[i] || !dst[i] || !out[i]) {
122 srcContext= sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL);
124 fprintf(stderr, "Failed to get %s ---> %s\n",
125 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
126 av_pix_fmt_descriptors[srcFormat].name);
131 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
133 fprintf(stderr, "Failed to get %s ---> %s\n",
134 av_pix_fmt_descriptors[srcFormat].name,
135 av_pix_fmt_descriptors[dstFormat].name);
140 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, flags, NULL, NULL, NULL);
142 fprintf(stderr, "Failed to get %s ---> %s\n",
143 av_pix_fmt_descriptors[dstFormat].name,
144 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
149 // printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
150 // (int)src[0], (int)src[1], (int)src[2]);
152 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
153 av_pix_fmt_descriptors[srcFormat].name, srcW, srcH,
154 av_pix_fmt_descriptors[dstFormat].name, dstW, dstH,
158 sws_scale(srcContext, ref, refStride, 0, h , src, srcStride);
159 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
160 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
162 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
163 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
164 //FIXME check that output is really gray
165 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
166 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
168 if (isALPHA(srcFormat) && isALPHA(dstFormat))
169 ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
176 printf(" SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
177 ssdY, ssdU, ssdV, ssdA);
181 sws_freeContext(srcContext);
182 sws_freeContext(dstContext);
183 sws_freeContext(outContext);
185 for (i=0; i<4; i++) {
194 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h)
196 const int flags[] = { SWS_FAST_BILINEAR,
197 SWS_BILINEAR, SWS_BICUBIC,
198 SWS_X , SWS_POINT , SWS_AREA, 0 };
201 const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
202 const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
203 enum PixelFormat srcFormat, dstFormat;
205 for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) {
206 if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat))
209 for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) {
213 if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat))
217 av_pix_fmt_descriptors[srcFormat].name,
218 av_pix_fmt_descriptors[dstFormat].name);
221 for (k = 0; flags[k] && !res; k++)
222 for (i = 0; dstW[i] && !res; i++)
223 for (j = 0; dstH[j] && !res; j++)
224 res = doTest(ref, refStride, w, h, srcFormat, dstFormat,
225 srcW, srcH, dstW[i], dstH[j], flags[k]);
233 int main(int argc, char **argv)
235 uint8_t *rgb_data = av_malloc (W*H*4);
236 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
237 int rgb_stride[3]={4*W, 0, 0};
238 uint8_t *data = av_malloc (4*W*H);
239 uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
240 int stride[4]={W, W, W, W};
242 struct SwsContext *sws;
245 if (!rgb_data || !data)
248 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
250 av_lfg_init(&rand, 1);
252 for (y=0; y<H; y++) {
253 for (x=0; x<W*4; x++) {
254 rgb_data[ x + y*4*W]= av_lfg_get(&rand);
257 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
258 sws_freeContext(sws);
261 selfTest(src, stride, W, H);