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 "libavcore/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. */
40 || (x)==PIX_FMT_GRAY16BE \
41 || (x)==PIX_FMT_GRAY16LE \
43 #define hasChroma(x) (!( \
45 || (x)==PIX_FMT_MONOBLACK \
46 || (x)==PIX_FMT_MONOWHITE \
48 #define isALPHA(x) ( \
50 || (x)==PIX_FMT_BGR32_1 \
51 || (x)==PIX_FMT_RGB32 \
52 || (x)==PIX_FMT_RGB32_1 \
53 || (x)==PIX_FMT_YUVA420P \
56 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
61 //printf("%d %d\n", w, h);
65 int d= src1[x + y*stride1] - src2[x + y*stride2];
67 //printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
74 // test by ref -> src -> dst -> out & compare out against ref
76 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
77 uint8_t *src[4], int srcStride[4],
78 enum PixelFormat srcFormat, enum PixelFormat dstFormat,
79 int srcW, int srcH, int dstW, int dstH, int flags)
81 uint8_t *dst[4] = {0};
82 uint8_t *out[4] = {0};
85 uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
86 struct SwsContext *dstContext = NULL, *outContext = NULL;
90 av_image_fill_linesizes(dstStride, dstFormat, dstW);
92 /* Image buffers passed into libswscale can be allocated any way you
93 * prefer, as long as they're aligned enough for the architecture, and
94 * they're freed appropriately (such as using av_free for buffers
95 * allocated with av_malloc). */
96 /* An extra 16 bytes is being allocated because some scalers may write
99 dst[i]= av_mallocz(dstStride[i]*dstH+16);
101 out[i]= av_mallocz(refStride[i]*h);
102 if ((dstStride[i] && !dst[i]) || (refStride[i] && !out[i])) {
110 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
112 fprintf(stderr, "Failed to get %s ---> %s\n",
113 av_pix_fmt_descriptors[srcFormat].name,
114 av_pix_fmt_descriptors[dstFormat].name);
119 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, flags, NULL, NULL, NULL);
121 fprintf(stderr, "Failed to get %s ---> %s\n",
122 av_pix_fmt_descriptors[dstFormat].name,
123 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name);
128 // printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
129 // (int)src[0], (int)src[1], (int)src[2]);
131 printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
132 av_pix_fmt_descriptors[srcFormat].name, srcW, srcH,
133 av_pix_fmt_descriptors[dstFormat].name, dstW, dstH,
137 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
138 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
140 for (i = 0; i < 4 && dstStride[i]; i++) {
141 crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i], dstStride[i] * dstH);
144 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
145 if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
146 //FIXME check that output is really gray
147 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
148 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
150 if (isALPHA(srcFormat) && isALPHA(dstFormat))
151 ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
158 printf(" CRC=%08x SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
159 crc, ssdY, ssdU, ssdV, ssdA);
163 sws_freeContext(dstContext);
164 sws_freeContext(outContext);
166 for (i=0; i<4; i++) {
176 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h)
178 const int flags[] = { SWS_FAST_BILINEAR,
179 SWS_BILINEAR, SWS_BICUBIC,
180 SWS_X , SWS_POINT , SWS_AREA, 0 };
183 const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
184 const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
185 enum PixelFormat srcFormat, dstFormat;
187 for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) {
188 if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat))
191 for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) {
195 if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat))
199 av_pix_fmt_descriptors[srcFormat].name,
200 av_pix_fmt_descriptors[dstFormat].name);
203 for (k = 0; flags[k] && !res; k++) {
204 struct SwsContext *srcContext = NULL;
205 uint8_t *src[4] = {0};
208 av_image_fill_linesizes(srcStride, srcFormat, srcW);
209 for (p = 0; p < 4; p++) {
211 src[p] = av_mallocz(srcStride[p]*srcH+16);
212 if (srcStride[p] && !src[p]) {
217 srcContext = sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH,
218 srcFormat, flags[k], NULL, NULL, NULL);
220 fprintf(stderr, "Failed to get %s ---> %s\n",
221 av_pix_fmt_descriptors[PIX_FMT_YUVA420P].name,
222 av_pix_fmt_descriptors[srcFormat].name);
225 sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
227 for (i = 0; dstW[i] && !res; i++)
228 for (j = 0; dstH[j] && !res; j++)
229 res = doTest(ref, refStride, w, h, src, srcStride,
230 srcFormat, dstFormat,
231 srcW, srcH, dstW[i], dstH[j], flags[k]);
233 sws_freeContext(srcContext);
234 for (p = 0; p < 4; p++)
245 int main(int argc, char **argv)
247 uint8_t *rgb_data = av_malloc (W*H*4);
248 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
249 int rgb_stride[3]={4*W, 0, 0};
250 uint8_t *data = av_malloc (4*W*H);
251 uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
252 int stride[4]={W, W, W, W};
254 struct SwsContext *sws;
257 if (!rgb_data || !data)
260 sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
262 av_lfg_init(&rand, 1);
264 for (y=0; y<H; y++) {
265 for (x=0; x<W*4; x++) {
266 rgb_data[ x + y*4*W]= av_lfg_get(&rand);
269 sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
270 sws_freeContext(sws);
273 selfTest(src, stride, W, H);