| /* |
| * 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; |
| } |