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ffmpeg/libswscale/tests/floatimg_cmp.c
Mark Reid 6bf57c6a2a libswscale/tests: add floatimg_cmp test 
changes since v1:
- made into fate test
- fixed c90 warnings
- tests more intermediate formats
- tested on BE mips too

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-10-02 14:59:52 +02:00

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/*
* 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 <math.h>
#include <inttypes.h>
#include <float.h>
#include "libavutil/avutil.h"
#include "libavutil/imgutils.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/lfg.h"
#include "libavutil/mem.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libswscale/swscale.h"
#define DEFAULT_W 96
#define DEFAULT_H 96
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P16LE,
AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUV444P10LE,
AV_PIX_FMT_YUV444P12LE, AV_PIX_FMT_YUV444P14LE,
AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
AV_PIX_FMT_GBRP9LE,
AV_PIX_FMT_GBRP10LE, AV_PIX_FMT_GBRAP10LE,
AV_PIX_FMT_GBRP12LE, AV_PIX_FMT_GBRAP12LE,
AV_PIX_FMT_GBRP14LE,
AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRAP16LE
};
const char *usage = "floatimg_cmp -pixel_format <pix_fmt> -size <image_size> -ref <testfile>\n";
int main(int argc, char **argv)
{
enum AVPixelFormat inFormat = AV_PIX_FMT_NONE;
enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
const AVPixFmtDescriptor *desc;
uint8_t *ptr;
uint32_t *in, *out;
uint8_t *rgbIn[4] = {NULL, NULL, NULL, NULL};
uint8_t *rgbOut[4] = {NULL, NULL, NULL, NULL};
int rgbStride[4];
uint8_t *dst[4] = {NULL, NULL, NULL, NULL};
int dstStride[4];
int i, x, y, p, size, count;
int res = -1;
int w = -1;
int h = -1;
union av_intfloat32 v0, v1;
double sum;
float minimum, maximum, diff;
struct SwsContext *sws = NULL;
AVLFG rand;
FILE *fp = NULL;
for (i = 1; i < argc; i += 2) {
if (argv[i][0] != '-' || i + 1 == argc)
goto bad_option;
if (!strcmp(argv[i], "-ref")) {
fp = fopen(argv[i + 1], "rb");
if (!fp) {
fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
goto end;
}
} else if (!strcmp(argv[i], "-size")) {
res = av_parse_video_size(&w, &h, argv[i + 1]);
if (res < 0) {
fprintf(stderr, "invalid video size %s\n", argv[i + 1]);
goto end;
}
} else if (!strcmp(argv[i], "-pixel_format")) {
inFormat = av_get_pix_fmt(argv[i + 1]);
if (inFormat == AV_PIX_FMT_NONE) {
fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
goto end;
}
} else {
bad_option:
fprintf(stderr, "%s", usage);
fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
goto end;
};
}
if (!fp) {
inFormat = AV_PIX_FMT_GBRPF32LE;
w = DEFAULT_W;
h = DEFAULT_H;
}
if (w <= 0 || h <= 0) {
fprintf(stderr, "%s", usage);
fprintf(stderr, "invalid -video_size\n");
goto end;
}
if (inFormat == AV_PIX_FMT_NONE) {
fprintf(stderr, "%s", usage);
fprintf(stderr, "invalid input pixel format\n");
goto end;
}
desc = av_pix_fmt_desc_get(inFormat);
if (!(desc->flags & AV_PIX_FMT_FLAG_FLOAT)) {
fprintf(stderr, "input pixel format not floating point.\n");
goto end;
}
res = av_image_fill_linesizes(rgbStride, inFormat, w);
if (res < 0) {
fprintf(stderr, "av_image_fill_linesizes failed\n");
goto end;
}
for (p = 0; p < 4; p++) {
rgbStride[p] = FFALIGN(rgbStride[p], 16);
if (rgbStride[p]) {
rgbIn[p] = av_mallocz(rgbStride[p] * h + 16);
rgbOut[p] = av_mallocz(rgbStride[p] * h + 16);
}
if (rgbStride[p] && (!rgbIn[p] || !rgbOut[p])) {
goto end;
}
}
for (i = 0; i < FF_ARRAY_ELEMS(pix_fmts); i++) {
dstFormat = pix_fmts[i];
if (fp) {
fseek(fp, 0, SEEK_SET);
for (p = 0; p < 4; p++) {
if (!rgbStride[p])
continue;
ptr = rgbIn[p];
for (y = 0; y < h; y++) {
size = fread(ptr, 1, w*4, fp);
if (size != w*4) {
fprintf(stderr, "read error: %d\n", size);
goto end;
}
ptr += rgbStride[p];
}
}
} else {
// fill src with random values between 0.0 - 1.0
av_lfg_init(&rand, 1);
for (p = 0; p < 4; p++) {
if (!rgbStride[p])
continue;
for (y = 0; y < h; y++) {
in = (uint32_t*)(rgbIn[p] + y * rgbStride[p]);
for (x = 0; x < w; x++) {
v0.f = (float)av_lfg_get(&rand)/(float)(UINT32_MAX);
*in++ = AV_RL32(&v0.i);
}
}
}
}
// setup intermediate image
for (p = 0; p < 4; p++) {
av_freep(&dst[p]);
}
res = av_image_fill_linesizes(dstStride, dstFormat, w);
if (res < 0) {
fprintf(stderr, "av_image_fill_linesizes failed\n");
goto end;
}
for (p = 0; p < 4; p++) {
dstStride[p] = FFALIGN(dstStride[p], 16);
if (dstStride[p]) {
dst[p] = av_mallocz(dstStride[p] * h + 16);
}
if (dstStride[p] && !dst[p]) {
goto end;
}
}
// srcFormat -> dstFormat
sws = sws_getContext(w, h, inFormat, w, h,
dstFormat, SWS_BILINEAR, NULL, NULL, NULL);
if (!sws) {
fprintf(stderr, "Failed to get %s -> %s\n", av_get_pix_fmt_name(inFormat), av_get_pix_fmt_name(dstFormat) );
goto end;
}
res = sws_scale(sws, (const uint8_t *const *)rgbIn, rgbStride, 0, h, dst, dstStride);
if (res < 0 || res != h) {
fprintf(stderr, "sws_scale failed\n");
res = -1;
goto end;
}
sws_freeContext(sws);
// dstFormat -> srcFormat
sws = sws_getContext(w, h, dstFormat, w, h,
inFormat, SWS_BILINEAR, NULL, NULL, NULL);
if(!sws) {
fprintf(stderr, "Failed to get %s -> %s\n", av_get_pix_fmt_name(dstFormat), av_get_pix_fmt_name(inFormat) );
goto end;
}
res = sws_scale(sws, (const uint8_t *const *)dst, dstStride, 0, h, rgbOut, rgbStride);
if (res < 0 || res != h) {
fprintf(stderr, "sws_scale failed\n");
res = -1;
goto end;
}
sws_freeContext(sws);
sws = NULL;
minimum = FLT_MAX;
maximum = -FLT_MAX;
count = 0;
sum = 0.0;
for (p = 0; p < 4; p++) {
if (!rgbStride[p])
continue;
for (y = 0; y < h; y++) {
in = (uint32_t*)(rgbIn[p] + y * rgbStride[p]);
out = (uint32_t*)(rgbOut[p] + y * rgbStride[p]);
for (x = 0; x < w; x++) {
if (desc->flags & AV_PIX_FMT_FLAG_BE) {
v0.i = AV_RB32(in);
v1.i = AV_RB32(out);
} else {
v0.i = AV_RL32(in);
v1.i = AV_RL32(out);
}
diff = fabsf(v0.f - v1.f);
sum += diff;
minimum = FFMIN(minimum, diff);
maximum = FFMAX(maximum, diff);
count++;
in++;
out++;
}
}
}
fprintf(stdout, "%s -> %s -> %s\n", av_get_pix_fmt_name(inFormat), av_get_pix_fmt_name(dstFormat), av_get_pix_fmt_name(inFormat) );
fprintf(stdout, "avg diff: %f\nmin diff: %f\nmax diff: %f\n", sum / count, minimum, maximum);
res = 0;
}
end:
sws_freeContext(sws);
for (p = 0; p < 4; p++) {
av_freep(&rgbIn[p]);
av_freep(&rgbOut[p]);
av_freep(&dst[p]);
}
if (fp)
fclose(fp);
return res;
}
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