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Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#undef HAVE_AV_CONFIG_H
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static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h){
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//printf("%d %d\n", w, h);
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int d= src1[x + y*stride1] - src2[x + y*stride2];
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//printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
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// test by ref -> src -> dst -> out & compare out against ref
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static int doTest(uint8_t *ref[3], int refStride[3], int w, int h, int srcFormat, int dstFormat,
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int srcW, int srcH, int dstW, int dstH, int flags){
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int srcStride[3], dstStride[3];
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uint64_t ssdY, ssdU, ssdV;
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struct SwsContext *srcContext, *dstContext, *outContext;
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// avoid stride % bpp != 0
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if(srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24)
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if(dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24)
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src[i]= (uint8_t*) malloc(srcStride[i]*srcH);
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dst[i]= (uint8_t*) malloc(dstStride[i]*dstH);
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out[i]= (uint8_t*) malloc(refStride[i]*h);
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if ((src[i] == NULL) || (dst[i] == NULL) || (out[i] == NULL)) {
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dstContext = outContext = NULL;
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srcContext= sws_getContext(w, h, PIX_FMT_YUV420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL);
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if (srcContext == NULL) {
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fprintf(stderr, "Failed to get %s ---> %s\n",
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sws_format_name(PIX_FMT_YUV420P),
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sws_format_name(srcFormat));
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dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
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if (dstContext == NULL) {
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fprintf(stderr, "Failed to get %s ---> %s\n",
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sws_format_name(srcFormat),
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sws_format_name(dstFormat));
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outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
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if (outContext == NULL) {
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fprintf(stderr, "Failed to get %s ---> %s\n",
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sws_format_name(dstFormat),
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sws_format_name(PIX_FMT_YUV420P));
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// printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
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// (int)src[0], (int)src[1], (int)src[2]);
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sws_scale(srcContext, ref, refStride, 0, h , src, srcStride);
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sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
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sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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asm volatile ("emms\n\t");
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ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
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ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
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ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
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if(srcFormat == PIX_FMT_GRAY8 || dstFormat==PIX_FMT_GRAY8) ssdU=ssdV=0; //FIXME check that output is really gray
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if(ssdY>100 || ssdU>100 || ssdV>100){
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printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5lld,%5lld,%5lld\n",
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sws_format_name(srcFormat), srcW, srcH,
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sws_format_name(dstFormat), dstW, dstH,
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sws_freeContext(srcContext);
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sws_freeContext(dstContext);
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sws_freeContext(outContext);
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void fast_memcpy(void *a, void *b, int s){ //FIXME
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static void selfTest(uint8_t *src[3], int stride[3], int w, int h){
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enum PixelFormat srcFormat, dstFormat;
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int srcW, srcH, dstW, dstH;
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for(srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) {
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for(dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) {
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sws_format_name(srcFormat),
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sws_format_name(dstFormat));
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for(dstW=w - w/3; dstW<= 4*w/3; dstW+= w/3){
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for(dstH=h - h/3; dstH<= 4*h/3; dstH+= h/3){
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for(flags=1; flags<33; flags*=2) {
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res = doTest(src, stride, w, h, srcFormat, dstFormat,
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srcW, srcH, dstW, dstH, flags);
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int main(int argc, char **argv){
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uint8_t rgb_data[W*H*4];
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uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
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int rgb_stride[3]={4*W, 0, 0};
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uint8_t data[3][W*H];
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uint8_t *src[3]= {data[0], data[1], data[2]};
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int stride[3]={W, W, W};
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struct SwsContext *sws;
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sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUV420P, 2, NULL, NULL, NULL);
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for(x=0; x<W*4; x++){
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rgb_data[ x + y*4*W]= random();
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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sws_rgb2rgb_init(SWS_CPU_CAPS_MMX*0);
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sws_scale(sws, rgb_src, rgb_stride, 0, H , src, stride);
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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asm volatile ("emms\n\t");
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selfTest(src, stride, W, H);