mirror of https://git.ffmpeg.org/ffmpeg.git
228 lines
7.0 KiB
C
228 lines
7.0 KiB
C
/*
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* Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <stdarg.h>
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#undef HAVE_AV_CONFIG_H
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#include "libavutil/avutil.h"
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#include "libavutil/lfg.h"
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#include "swscale.h"
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#include "swscale_internal.h"
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#undef fprintf
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#undef free
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#undef malloc
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#undef perror
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#undef printf
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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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int x,y;
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uint64_t ssd=0;
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//printf("%d %d\n", w, h);
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for (y=0; y<h; y++){
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for (x=0; x<w; x++){
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int d= src1[x + y*stride1] - src2[x + y*stride2];
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ssd+= d*d;
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//printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
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}
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//printf("\n");
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}
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return ssd;
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}
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// test by ref -> src -> dst -> out & compare out against ref
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// ref & out are YV12
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static int doTest(uint8_t *ref[4], int refStride[4], 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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uint8_t *src[4] = {0};
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uint8_t *dst[4] = {0};
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uint8_t *out[4] = {0};
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int srcStride[4], dstStride[4];
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int i;
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uint64_t ssdY, ssdU, ssdV, ssdA=0;
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struct SwsContext *srcContext = NULL, *dstContext = NULL,
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*outContext = NULL;
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int res;
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res = 0;
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for (i=0; i<4; i++){
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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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srcStride[i]= srcW*3;
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else if (srcFormat==PIX_FMT_RGB48BE || srcFormat==PIX_FMT_RGB48LE)
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srcStride[i]= srcW*6;
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else
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srcStride[i]= srcW*4;
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if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24)
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dstStride[i]= dstW*3;
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else if (dstFormat==PIX_FMT_RGB48BE || dstFormat==PIX_FMT_RGB48LE)
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dstStride[i]= dstW*6;
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else
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dstStride[i]= dstW*4;
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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] || !dst[i] || !out[i]) {
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perror("Malloc");
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res = -1;
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goto end;
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}
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}
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srcContext= sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL);
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if (!srcContext) {
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fprintf(stderr, "Failed to get %s ---> %s\n",
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sws_format_name(PIX_FMT_YUVA420P),
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sws_format_name(srcFormat));
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res = -1;
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goto end;
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}
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dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
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if (!dstContext) {
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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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res = -1;
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goto end;
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}
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outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, flags, NULL, NULL, NULL);
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if (!outContext) {
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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_YUVA420P));
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res = -1;
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goto end;
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}
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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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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 (isALPHA(srcFormat) && isALPHA(dstFormat))
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ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
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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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ssdY/= w*h;
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ssdU/= w*h/4;
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ssdV/= w*h/4;
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ssdA/= w*h;
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printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\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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flags, ssdY, ssdU, ssdV, ssdA);
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fflush(stdout);
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end:
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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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for (i=0; i<4; i++){
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free(src[i]);
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free(dst[i]);
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free(out[i]);
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}
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return res;
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}
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static void selfTest(uint8_t *src[4], int stride[4], 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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int flags;
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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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printf("%s -> %s\n",
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sws_format_name(srcFormat),
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sws_format_name(dstFormat));
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fflush(stdout);
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srcW= w;
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srcH= h;
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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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int res;
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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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if (res < 0) {
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dstW = 4 * w / 3;
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dstH = 4 * h / 3;
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flags = 33;
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}
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}
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}
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}
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}
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}
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}
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#define W 96
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#define H 96
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int main(int argc, char **argv){
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uint8_t *rgb_data = malloc (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 = malloc (4*W*H);
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uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
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int stride[4]={W, W, W, W};
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int x, y;
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struct SwsContext *sws;
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AVLFG rand;
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sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, 2, NULL, NULL, NULL);
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av_lfg_init(&rand, 1);
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for (y=0; y<H; y++){
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for (x=0; x<W*4; x++){
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rgb_data[ x + y*4*W]= av_lfg_get(&rand);
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}
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}
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sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
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selfTest(src, stride, W, H);
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return 123;
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}
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