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/*
* Copyright (c) 2025 Michael Niedermayer
*
* 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 "libavutil/frame.h"
#include "libavutil/adler32.h"
#include "libpostproc/postprocess.h"
typedef const uint8_t *cuint8;
static void strips(AVFrame *frame, int mul)
{
for(int y=0; y<frame->height; y++) {
for(int x=0; x<frame->width; x++) {
if (y&1) {
frame->data[0][x + y*frame->linesize[0]] = x*x + y*mul;
} else {
frame->data[0][x + y*frame->linesize[0]] = (y-x)*(y-x);
}
}
}
for(int y=0; y<(frame->height+1)/2; y++) {
for(int x=0; x<(frame->width+1)/2; x++) {
if (y&1) {
frame->data[1][x + y*frame->linesize[1]] = x + y + mul;
frame->data[2][x + y*frame->linesize[2]] = mul*x - y*x;
} else {
frame->data[1][x + y*frame->linesize[1]] = (x - y)/(mul+1);
frame->data[2][x + y*frame->linesize[2]] = (y + x)/(mul+1);
}
}
}
}
static int64_t chksum(AVFrame *f)
{
AVAdler a = 123;
for(int y=0; y<f->height; y++) {
a = av_adler32_update(a, &f->data[0][y*f->linesize[0]], f->width);
}
for(int y=0; y<(f->height+1)/2; y++) {
a = av_adler32_update(a, &f->data[1][y*f->linesize[1]], (f->width+1)/2);
a = av_adler32_update(a, &f->data[2][y*f->linesize[2]], (f->width+1)/2);
}
return a;
}
static int64_t test(int width, int height, const char *testname, int mul, int flags, int pict_type, int quality) {
AVFrame *in = av_frame_alloc();
AVFrame *out = av_frame_alloc();
pp_context *context = pp_get_context(width, height, flags);
pp_mode *mode = pp_get_mode_by_name_and_quality(testname, quality);
int64_t ret;
if (!in || !out || !context || !mode) {
ret = AVERROR(ENOMEM);
goto end;
}
in-> width = out->width = width;
in->height = out->height = height;
in->format = out->format = AV_PIX_FMT_YUV420P;
ret = av_frame_get_buffer(in, 0);
if (ret < 0)
goto end;
ret = av_frame_get_buffer(out, 0);
if (ret < 0)
goto end;
strips(in, mul);
pp_postprocess( (cuint8[]){in->data[0], in->data[1], in->data[2]}, in->linesize,
out->data, out->linesize,
width, height, NULL, 0,
mode, context, pict_type);
ret = chksum(out);
end:
av_frame_free(&in);
av_frame_free(&out);
pp_free_context(context);
pp_free_mode(mode);
return ret;
}
int main(int argc, char **argv) {
const char *teststrings[] = {
"be,lb",
"be,li",
"be,ci",
"be,md",
"be,fd",
"be,l5",
};
for (int w=16; w< 352; w=w*3-16) {
for (int h=16; h< 352; h=h*5-16) {
for (int b=0; b<6; b++) {
for (int m=0; m<17; m = 2*m+1) {
int64_t ret = test(w, h, teststrings[b], m, PP_FORMAT_420, 0, 11);
printf("striptest %dx%d T:%s m:%d result %"PRIX64"\n", w, h, teststrings[b], m, ret);
}
}
}
}
return 0;
}
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