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Diffstat (limited to 'postproc/swscale-example.c')
-rw-r--r-- | postproc/swscale-example.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/postproc/swscale-example.c b/postproc/swscale-example.c new file mode 100644 index 0000000..f83fe0c --- /dev/null +++ b/postproc/swscale-example.c @@ -0,0 +1,204 @@ +/* + Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> +#include <stdarg.h> + +#include "swscale.h" +#include "../libvo/img_format.h" +#include "../cpudetect.h" + +static int testFormat[]={ +IMGFMT_YVU9, +IMGFMT_YV12, +//IMGFMT_IYUV, +IMGFMT_I420, +IMGFMT_BGR15, +IMGFMT_BGR16, +IMGFMT_BGR24, +IMGFMT_BGR32, +IMGFMT_RGB24, +IMGFMT_RGB32, +//IMGFMT_Y8, +IMGFMT_Y800, +//IMGFMT_YUY2, +0 +}; + +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 void 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; + + for(i=0; i<3; i++){ + // avoid stride % bpp != 0 + if(srcFormat==IMGFMT_RGB24 || srcFormat==IMGFMT_BGR24) + srcStride[i]= srcW*3; + else + srcStride[i]= srcW*4; + + if(dstFormat==IMGFMT_RGB24 || dstFormat==IMGFMT_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); + } + + srcContext= sws_getContext(w, h, IMGFMT_YV12, srcW, srcH, srcFormat, flags, NULL, NULL); + dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL); + outContext= sws_getContext(dstW, dstH, dstFormat, w, h, IMGFMT_YV12, flags, NULL, NULL); + if(srcContext==NULL ||dstContext==NULL ||outContext==NULL){ + printf("Failed allocating swsContext\n"); + 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); +asm volatile ("emms\n\t"); + + 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 == IMGFMT_Y800 || dstFormat==IMGFMT_Y800) ssdU=ssdV=0; //FIXME check that output is really gray + + ssdY/= w*h; + ssdU/= w*h/4; + ssdV/= w*h/4; + + if(ssdY>100 || ssdU>100 || ssdV>100){ + printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5lld,%5lld,%5lld\n", + vo_format_name(srcFormat), srcW, srcH, + vo_format_name(dstFormat), dstW, dstH, + flags, + ssdY, ssdU, ssdV); + } + + 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]); + } +} + +void mp_msg_c( int x, const char *format, ... ){ + va_list va; + va_start(va, format); + vfprintf(stderr, format, va); + va_end(va); +} + +int verbose=0; //FIXME +void fast_memcpy(void *a, void *b, int s){ //FIXME + memcpy(a, b, s); +} + +static void selfTest(uint8_t *src[3], int stride[3], int w, int h){ + int srcFormat, dstFormat, srcFormatIndex, dstFormatIndex; + int srcW, srcH, dstW, dstH; + int flags; + + for(srcFormatIndex=0; ;srcFormatIndex++){ + srcFormat= testFormat[srcFormatIndex]; + if(!srcFormat) break; + for(dstFormatIndex=0; ;dstFormatIndex++){ + dstFormat= testFormat[dstFormatIndex]; + if(!dstFormat) break; +// if(!isSupportedOut(dstFormat)) continue; +printf("%s -> %s\n", + vo_format_name(srcFormat), + vo_format_name(dstFormat)); + + 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) + doTest(src, stride, w, h, srcFormat, dstFormat, + srcW, srcH, dstW, dstH, flags); + } + } + } + } +} + +#define W 96 +#define H 96 + +int main(int argc, char **argv){ + uint8_t rgb_data[W*H*4]; + uint8_t *rgb_src[3]= {rgb_data, NULL, NULL}; + int rgb_stride[3]={4*W, 0, 0}; + uint8_t data[3][W*H]; + uint8_t *src[3]= {data[0], data[1], data[2]}; + int stride[3]={W, W, W}; + int x, y; + struct SwsContext *sws; + GetCpuCaps(&gCpuCaps); + + sws= sws_getContext(W/12, H/12, IMGFMT_BGR32, W, H, IMGFMT_YV12, 2, 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); +asm volatile ("emms\n\t"); + selfTest(src, stride, W, H); +} |