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
29 #include "libavutil/log.h"
30 #include "libavutil/mem.h"
31 #include "libavutil/avutil.h"
32 #include "libavutil/lfg.h"
33 #include "libavutil/pixdesc.h"
36 /* HACK Duplicated from swscale_internal.h.
37 * Should be removed when a cleaner pixel format system exists. */
38 const char *sws_format_name(enum PixelFormat format);
41 || (x)==PIX_FMT_GRAY16BE \
42 || (x)==PIX_FMT_GRAY16LE \
44 #define hasChroma(x) (!( \
46 || (x)==PIX_FMT_MONOBLACK \
47 || (x)==PIX_FMT_MONOWHITE \
49 #define isALPHA(x) ( \
51 || (x)==PIX_FMT_BGR32_1 \
52 || (x)==PIX_FMT_RGB32 \
53 || (x)==PIX_FMT_RGB32_1 \
54 || (x)==PIX_FMT_YUVA420P \
57 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
62 //printf("%d %d\n", w, h);
66 int d= src1[x + y*stride1] - src2[x + y*stride2];
68 //printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
75 // test by ref -> src -> dst -> out & compare out against ref
77 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
78 enum PixelFormat srcFormat, enum PixelFormat dstFormat,
79 int srcW, int srcH, int dstW, int dstH, int flags)
81 uint8_t *src[4] = {0};
82 uint8_t *dst[4] = {0};
83 uint8_t *out[4] = {0};
84 int srcStride[4], dstStride[4];
86 uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
87 struct SwsContext *srcContext = NULL, *dstContext = NULL,
93 // avoid stride % bpp != 0
94 if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24)
96 else if (srcFormat==PIX_FMT_RGB48BE || srcFormat==PIX_FMT_RGB48LE)
101 if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24)
102 dstStride[i]= dstW*3;
103 else if (dstFormat==PIX_FMT_RGB48BE || dstFormat==PIX_FMT_RGB48LE)
104 dstStride[i]= dstW*6;
106 dstStride[i]= dstW*4;
108 /* Image buffers passed into libswscale can be allocated any way you
109 * prefer, as long as they're aligned enough for the architecture, and
110 * they're freed appropriately (such as using av_free for buffers
111 * allocated with av_malloc). */
112 src[i]= av_mallocz(srcStride[i]*srcH);
113 dst[i]= av_mallocz(dstStride[i]*dstH);
114 out[i]= av_mallocz(refStride[i]*h);
115 if (!src[i] || !dst[i] || !out[i]) {
123 srcContext= sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL);
125 fprintf(stderr, "Failed to get %s ---> %s\n",
126 sws_format_name(PIX_FMT_YUVA420P),
127 sws_format_name(srcFormat));
132 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
134 fprintf(stderr, "Failed to get %s ---> %s\n",
135 sws_format_name(srcFormat),
136 sws_format_name(dstFormat));
141 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, flags, NULL, NULL, NULL);
143 fprintf(stderr, "Failed to get %s ---> %s\n",
144 sws_format_name(dstFormat),
145 sws_format_name(PIX_FMT_YUVA420P));
150 // printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
151 // (int)src[0], (int)src[1], (int)src[2]);
153 sws_scale(srcContext, ref, refStride, 0, h , src, srcStride);
154 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
155 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
157 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
158 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
159 //FIXME check that output is really gray
160 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
161 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
163 if (isALPHA(srcFormat) && isALPHA(dstFormat))
164 ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
171 printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
172 sws_format_name(srcFormat), srcW, srcH,
173 sws_format_name(dstFormat), dstW, dstH,
174 flags, ssdY, ssdU, ssdV, ssdA);
179 sws_freeContext(srcContext);
180 sws_freeContext(dstContext);
181 sws_freeContext(outContext);
183 for (i=0; i<4; i++) {
192 static void selfTest(uint8_t *ref[4], int refStride[4], enum PixelFormat srcFormat, enum PixelFormat dstFormat, int w, int h)
194 const int flags[] = { SWS_FAST_BILINEAR,
195 SWS_BILINEAR, SWS_BICUBIC,
196 SWS_X , SWS_POINT , SWS_AREA, 0 };
199 int i, j, k, res = 0;
200 const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
201 const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
204 sws_format_name(srcFormat),
205 sws_format_name(dstFormat));
208 for (i = 0; dstW[i] && !res; i++)
209 for (j = 0; dstH[j] && !res; j++)
210 for (k = 0; flags[k] && !res; k++)
211 res = doTest(ref, refStride, w, h, srcFormat, dstFormat,
212 srcW, srcH, dstW[i], dstH[j], flags[k]|SWS_PRINT_INFO);
218 int main(int argc, char **argv)
220 uint8_t *rgb_data = av_malloc (W*H*4);
221 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
222 int rgb_stride[3]={4*W, 0, 0};
223 uint8_t *data = av_malloc (4*W*H);
224 uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
225 int stride[4]={W, W, W, W};
227 struct SwsContext *sws;
228 enum PixelFormat srcFmt, dstFmt;
231 av_log_set_level(AV_LOG_INFO);
234 fprintf(stderr, "Usage: swscale-test SRC_PIX_FMT DST_PIX_FMT\n");
237 if ((srcFmt = av_get_pix_fmt(argv[1])) == PIX_FMT_NONE) {
238 fprintf(stderr, "Unknown pixel input format name: '%s'\n", argv[1]);
241 if ((dstFmt = av_get_pix_fmt(argv[2])) == PIX_FMT_NONE) {
242 fprintf(stderr, "Unknown pixel output format name: '%s'\n", argv[2]);
245 if (!rgb_data || !data)
248 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P,
249 SWS_BILINEAR|SWS_PRINT_INFO, NULL, NULL, NULL);
251 av_lfg_init(&rand, 1);
253 for (y=0; y<H; y++) {
254 for (x=0; x<W*4; x++) {
255 rgb_data[ x + y*4*W]= av_lfg_get(&rand);
258 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
259 sws_freeContext(sws);
262 selfTest(src, stride, srcFmt, dstFmt, W, H);