mplayer idependant (not really yet) swscale example
[libav.git] / postproc / swscale-example.c
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c9b99ea6
MN
1/*
2 Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17*/
18
19#include <stdio.h>
20#include <stdlib.h>
21#include <string.h>
22#include <inttypes.h>
23#include <stdarg.h>
24
25#include "swscale.h"
26#include "../libvo/img_format.h"
27#include "../cpudetect.h"
28
29static int testFormat[]={
30IMGFMT_YVU9,
31IMGFMT_YV12,
32//IMGFMT_IYUV,
33IMGFMT_I420,
34IMGFMT_BGR15,
35IMGFMT_BGR16,
36IMGFMT_BGR24,
37IMGFMT_BGR32,
38IMGFMT_RGB24,
39IMGFMT_RGB32,
40//IMGFMT_Y8,
41IMGFMT_Y800,
42//IMGFMT_YUY2,
430
44};
45
46static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h){
47 int x,y;
48 uint64_t ssd=0;
49
50//printf("%d %d\n", w, h);
51
52 for(y=0; y<h; y++){
53 for(x=0; x<w; x++){
54 int d= src1[x + y*stride1] - src2[x + y*stride2];
55 ssd+= d*d;
56//printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
57 }
58//printf("\n");
59 }
60 return ssd;
61}
62
63// test by ref -> src -> dst -> out & compare out against ref
64// ref & out are YV12
65static void doTest(uint8_t *ref[3], int refStride[3], int w, int h, int srcFormat, int dstFormat,
66 int srcW, int srcH, int dstW, int dstH, int flags){
67 uint8_t *src[3];
68 uint8_t *dst[3];
69 uint8_t *out[3];
70 int srcStride[3], dstStride[3];
71 int i;
72 uint64_t ssdY, ssdU, ssdV;
73 struct SwsContext *srcContext, *dstContext, *outContext;
74
75 for(i=0; i<3; i++){
76 // avoid stride % bpp != 0
77 if(srcFormat==IMGFMT_RGB24 || srcFormat==IMGFMT_BGR24)
78 srcStride[i]= srcW*3;
79 else
80 srcStride[i]= srcW*4;
81
82 if(dstFormat==IMGFMT_RGB24 || dstFormat==IMGFMT_BGR24)
83 dstStride[i]= dstW*3;
84 else
85 dstStride[i]= dstW*4;
86
87 src[i]= (uint8_t*) malloc(srcStride[i]*srcH);
88 dst[i]= (uint8_t*) malloc(dstStride[i]*dstH);
89 out[i]= (uint8_t*) malloc(refStride[i]*h);
90 }
91
92 srcContext= sws_getContext(w, h, IMGFMT_YV12, srcW, srcH, srcFormat, flags, NULL, NULL);
93 dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL);
94 outContext= sws_getContext(dstW, dstH, dstFormat, w, h, IMGFMT_YV12, flags, NULL, NULL);
95 if(srcContext==NULL ||dstContext==NULL ||outContext==NULL){
96 printf("Failed allocating swsContext\n");
97 goto end;
98 }
99// printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
100// (int)src[0], (int)src[1], (int)src[2]);
101
102 sws_scale(srcContext, ref, refStride, 0, h , src, srcStride);
103 sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
104 sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
105asm volatile ("emms\n\t");
106
107 ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
108 ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
109 ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
110
111 if(srcFormat == IMGFMT_Y800 || dstFormat==IMGFMT_Y800) ssdU=ssdV=0; //FIXME check that output is really gray
112
113 ssdY/= w*h;
114 ssdU/= w*h/4;
115 ssdV/= w*h/4;
116
117 if(ssdY>100 || ssdU>100 || ssdV>100){
118 printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5lld,%5lld,%5lld\n",
119 vo_format_name(srcFormat), srcW, srcH,
120 vo_format_name(dstFormat), dstW, dstH,
121 flags,
122 ssdY, ssdU, ssdV);
123 }
124
125 end:
126
127 sws_freeContext(srcContext);
128 sws_freeContext(dstContext);
129 sws_freeContext(outContext);
130
131 for(i=0; i<3; i++){
132 free(src[i]);
133 free(dst[i]);
134 free(out[i]);
135 }
136}
137
138void mp_msg_c( int x, const char *format, ... ){
139 va_list va;
140 va_start(va, format);
141 vfprintf(stderr, format, va);
142 va_end(va);
143}
144
145int verbose=0; //FIXME
146void fast_memcpy(void *a, void *b, int s){ //FIXME
147 memcpy(a, b, s);
148}
149
150static void selfTest(uint8_t *src[3], int stride[3], int w, int h){
151 int srcFormat, dstFormat, srcFormatIndex, dstFormatIndex;
152 int srcW, srcH, dstW, dstH;
153 int flags;
154
155 for(srcFormatIndex=0; ;srcFormatIndex++){
156 srcFormat= testFormat[srcFormatIndex];
157 if(!srcFormat) break;
158 for(dstFormatIndex=0; ;dstFormatIndex++){
159 dstFormat= testFormat[dstFormatIndex];
160 if(!dstFormat) break;
161// if(!isSupportedOut(dstFormat)) continue;
162printf("%s -> %s\n",
163 vo_format_name(srcFormat),
164 vo_format_name(dstFormat));
165
166 srcW= w;
167 srcH= h;
168 for(dstW=w - w/3; dstW<= 4*w/3; dstW+= w/3){
169 for(dstH=h - h/3; dstH<= 4*h/3; dstH+= h/3){
170 for(flags=1; flags<33; flags*=2)
171 doTest(src, stride, w, h, srcFormat, dstFormat,
172 srcW, srcH, dstW, dstH, flags);
173 }
174 }
175 }
176 }
177}
178
179#define W 96
180#define H 96
181
182int main(int argc, char **argv){
183 uint8_t rgb_data[W*H*4];
184 uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
185 int rgb_stride[3]={4*W, 0, 0};
186 uint8_t data[3][W*H];
187 uint8_t *src[3]= {data[0], data[1], data[2]};
188 int stride[3]={W, W, W};
189 int x, y;
190 struct SwsContext *sws;
191 GetCpuCaps(&gCpuCaps);
192
193 sws= sws_getContext(W/12, H/12, IMGFMT_BGR32, W, H, IMGFMT_YV12, 2, NULL, NULL);
194
195 for(y=0; y<H; y++){
196 for(x=0; x<W*4; x++){
197 rgb_data[ x + y*4*W]= random();
198 }
199 }
200
201 sws_scale(sws, rgb_src, rgb_stride, 0, H , src, stride);
202asm volatile ("emms\n\t");
203 selfTest(src, stride, W, H);
204}