/*
* Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at > * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include
<
stdio.h
>
#include
<
stdlib.h
>
#include
<
string
.h
>
#include
<
inttypes.h
>
#include
<
stdarg.h
>
#undef
HAVE_AV_CONFIG_H
#include
"
libavutil/avutil.h
"
#include
"
swscale.h
"
#include
"
swscale_internal.h
"
static
uint64_t getSSD(uint8_t
*
src1, uint8_t
*
src2,
int
stride1,
int
stride2,
int
w,
int
h)
{ int x,y; uint64_t ssd=0;//printf("%d %d/n", w, h);
for (y=0; y<h; y++){ for (x=0; x<w; x++){ int d= src1[x + y*stride1] - src2[x + y*stride2]; ssd+= d*d;//printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
}//printf("/n"); } return ssd;}
//
test by ref -> src -> dst -> out & compare out against ref
//
ref & out are YV12
static
int
doTest(uint8_t
*
ref
[
3
],
int
refStride[
3
],
int
w,
int
h,
int
srcFormat,
int
dstFormat,
int
srcW,
int
srcH,
int
dstW,
int
dstH,
int
flags)
{ uint8_t *src[3]; uint8_t *dst[3]; uint8_t *out[3]; int srcStride[3], dstStride[3]; int i; uint64_t ssdY, ssdU, ssdV; struct SwsContext *srcContext, *dstContext, *outContext; int res; res = 0; for (i=0; i<3; i++){ // avoid stride % bpp != 0 if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24) srcStride[i]= srcW*3; else srcStride[i]= srcW*4; if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24) dstStride[i]= dstW*3; else dstStride[i]= dstW*4; src[i]= (uint8_t*) malloc(srcStride[i]*srcH); dst[i]= (uint8_t*) malloc(dstStride[i]*dstH); out[i]= (uint8_t*) malloc(refStride[i]*h); if (!src[i] || !dst[i] || !out[i]) { perror("Malloc"); res = -1; goto end; } } dstContext = outContext = NULL; srcContext= sws_getContext(w, h, PIX_FMT_YUV420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL); if (!srcContext) { fprintf(stderr, "Failed to get %s ---> %s/n", sws_format_name(PIX_FMT_YUV420P), sws_format_name(srcFormat)); res = -1; goto end; } dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL); if (!dstContext) { fprintf(stderr, "Failed to get %s ---> %s/n", sws_format_name(srcFormat), sws_format_name(dstFormat)); res = -1; goto end; } outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUV420P, flags, NULL, NULL, NULL); if (!outContext) { fprintf(stderr, "Failed to get %s ---> %s/n", sws_format_name(dstFormat), sws_format_name(PIX_FMT_YUV420P)); res = -1; goto end; }// printf("test %X %X %X -> %X %X %X/n", (int)ref[0], (int)ref[1], (int)ref[2],// (int)src[0], (int)src[1], (int)src[2]); sws_scale(srcContext, ref, refStride, 0, h , src, srcStride); sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride); sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride); ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h); ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1); ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1); if (srcFormat == PIX_FMT_GRAY8 || dstFormat==PIX_FMT_GRAY8) ssdU=ssdV=0; //FIXME check that output is really gray ssdY/= w*h; ssdU/= w*h/4; ssdV/= w*h/4; printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5lld,%5lld,%5lld/n", sws_format_name(srcFormat), srcW, srcH, sws_format_name(dstFormat), dstW, dstH, flags, ssdY, ssdU, ssdV); fflush(stdout); end: sws_freeContext(srcContext); sws_freeContext(dstContext); sws_freeContext(outContext); for (i=0; i<3; i++){ free(src[i]); free(dst[i]); free(out[i]); } return res;}
static
void
selfTest(uint8_t
*
src[
3
],
int
stride[
3
],
int
w,
int
h)
{ enum PixelFormat srcFormat, dstFormat; int srcW, srcH, dstW, dstH; int flags; for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) { for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) { printf("%s -> %s/n", sws_format_name(srcFormat), sws_format_name(dstFormat)); fflush(stdout); srcW= w; srcH= h; for (dstW=w - w/3; dstW<= 4*w/3; dstW+= w/3){ for (dstH=h - h/3; dstH<= 4*h/3; dstH+= h/3){ for (flags=1; flags<33; flags*=2) { int res; res = doTest(src, stride, w, h, srcFormat, dstFormat, srcW, srcH, dstW, dstH, flags); if (res < 0) { dstW = 4 * w / 3; dstH = 4 * h / 3; flags = 33; } } } } } }}
#define
W 96
#define
H 96
int
main(
int
argc,
char
**
argv)
{ uint8_t *rgb_data = malloc (W*H*4); uint8_t *rgb_src[3]= {rgb_data, NULL, NULL}; int rgb_stride[3]={4*W, 0, 0}; uint8_t *data = malloc (3*W*H); uint8_t *src[3]= {data, data+W*H, data+W*H*2}; int stride[3]={W, W, W}; int x, y; struct SwsContext *sws; sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUV420P, 2, NULL, NULL, NULL); for (y=0; y<H; y++){ for (x=0; x<W*4; x++){ rgb_data[ x + y*4*W]= random(); } } sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride); selfTest(src, stride, W, H); return 123;}
