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Diffstat (limited to 'libswscale/swscale-test.c')
| -rw-r--r-- | libswscale/swscale-test.c | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/libswscale/swscale-test.c b/libswscale/swscale-test.c new file mode 100644 index 0000000000..a812ee5963 --- /dev/null +++ b/libswscale/swscale-test.c @@ -0,0 +1,260 @@ +/* + * 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/mem.h" +#include "libavutil/avutil.h" +#include "libavutil/lfg.h" +#include "swscale.h" + +/* HACK Duplicated from swscale_internal.h. + * Should be removed when a cleaner pixel format system exists. */ +const char *sws_format_name(enum PixelFormat format); +#define isGray(x) ( \ + (x)==PIX_FMT_GRAY8 \ + || (x)==PIX_FMT_GRAY16BE \ + || (x)==PIX_FMT_GRAY16LE \ + ) +#define hasChroma(x) (!( \ + isGray(x) \ + || (x)==PIX_FMT_MONOBLACK \ + || (x)==PIX_FMT_MONOWHITE \ + )) +#define isALPHA(x) ( \ + (x)==PIX_FMT_BGR32 \ + || (x)==PIX_FMT_BGR32_1 \ + || (x)==PIX_FMT_RGB32 \ + || (x)==PIX_FMT_RGB32_1 \ + || (x)==PIX_FMT_YUVA420P \ + ) + +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[4], int refStride[4], int w, int h, + enum PixelFormat srcFormat, enum PixelFormat dstFormat, + int srcW, int srcH, int dstW, int dstH, int flags) +{ + uint8_t *src[4] = {0}; + uint8_t *dst[4] = {0}; + uint8_t *out[4] = {0}; + int srcStride[4], dstStride[4]; + int i; + uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0; + struct SwsContext *srcContext = NULL, *dstContext = NULL, + *outContext = NULL; + int res; + + res = 0; + for (i=0; i<4; i++) { + // avoid stride % bpp != 0 + if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24) + srcStride[i]= srcW*3; + else if (srcFormat==PIX_FMT_RGB48BE || srcFormat==PIX_FMT_RGB48LE) + srcStride[i]= srcW*6; + else + srcStride[i]= srcW*4; + + if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24) + dstStride[i]= dstW*3; + else if (dstFormat==PIX_FMT_RGB48BE || dstFormat==PIX_FMT_RGB48LE) + dstStride[i]= dstW*6; + else + dstStride[i]= dstW*4; + + /* Image buffers passed into libswscale can be allocated any way you + * prefer, as long as they're aligned enough for the architecture, and + * they're freed appropriately (such as using av_free for buffers + * allocated with av_malloc). */ + src[i]= av_malloc(srcStride[i]*srcH); + dst[i]= av_malloc(dstStride[i]*dstH); + out[i]= av_malloc(refStride[i]*h); + if (!src[i] || !dst[i] || !out[i]) { + perror("Malloc"); + res = -1; + + goto end; + } + } + + srcContext= sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL); + if (!srcContext) { + fprintf(stderr, "Failed to get %s ---> %s\n", + sws_format_name(PIX_FMT_YUVA420P), + 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_YUVA420P, flags, NULL, NULL, NULL); + if (!outContext) { + fprintf(stderr, "Failed to get %s ---> %s\n", + sws_format_name(dstFormat), + sws_format_name(PIX_FMT_YUVA420P)); + 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); + if (hasChroma(srcFormat) && hasChroma(dstFormat)) { + //FIXME check that output is really gray + 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 (isALPHA(srcFormat) && isALPHA(dstFormat)) + ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h); + + ssdY/= w*h; + ssdU/= w*h/4; + ssdV/= w*h/4; + ssdA/= w*h; + + printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n", + sws_format_name(srcFormat), srcW, srcH, + sws_format_name(dstFormat), dstW, dstH, + flags, ssdY, ssdU, ssdV, ssdA); + fflush(stdout); + +end: + + sws_freeContext(srcContext); + sws_freeContext(dstContext); + sws_freeContext(outContext); + + for (i=0; i<4; i++) { + av_free(src[i]); + av_free(dst[i]); + av_free(out[i]); + } + + return res; +} + +static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h) +{ + const int flags[] = { SWS_FAST_BILINEAR, + SWS_BILINEAR, SWS_BICUBIC, + SWS_X , SWS_POINT , SWS_AREA, 0 }; + const int srcW = w; + const int srcH = h; + const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 }; + const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 }; + enum PixelFormat srcFormat, dstFormat; + + for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) { + if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat)) + continue; + + for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) { + int i, j, k; + int res = 0; + + if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat)) + continue; + + printf("%s -> %s\n", + sws_format_name(srcFormat), + sws_format_name(dstFormat)); + fflush(stdout); + + for (i = 0; dstW[i] && !res; i++) + for (j = 0; dstH[j] && !res; j++) + for (k = 0; flags[k] && !res; k++) + res = doTest(ref, refStride, w, h, srcFormat, dstFormat, + srcW, srcH, dstW[i], dstH[j], flags[k]); + } + } +} + +#define W 96 +#define H 96 + +int main(int argc, char **argv) +{ + uint8_t *rgb_data = av_malloc (W*H*4); + uint8_t *rgb_src[3]= {rgb_data, NULL, NULL}; + int rgb_stride[3]={4*W, 0, 0}; + uint8_t *data = av_malloc (4*W*H); + uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3}; + int stride[4]={W, W, W, W}; + int x, y; + struct SwsContext *sws; + AVLFG rand; + + if (!rgb_data || !data) + return -1; + + sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL); + + av_lfg_init(&rand, 1); + + for (y=0; y<H; y++) { + for (x=0; x<W*4; x++) { + rgb_data[ x + y*4*W]= av_lfg_get(&rand); + } + } + sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride); + sws_freeContext(sws); + av_free(rgb_data); + + selfTest(src, stride, W, H); + av_free(data); + + return 0; +} |