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#include <cstdio>
#include <cstdlib>
#include <vector>
#define STB_IMAGE_RESIZE_IMPLEMENTATION
#include "stb_image_resize.h"
#include "tinyexr.h"
int main(int argc, char** argv)
{
if (argc < 5) {
printf("Usage: exrresize input.exr output.exr dst_width dst_height.\n");
printf(" Only supports RGB or RGBA EXR input.\n");
exit(-1);
}
int dst_width = atoi(argv[3]);
int dst_height = atoi(argv[4]);
int width, height;
float* rgba;
const char* err;
{
int ret = LoadEXR(&rgba, &width, &height, argv[1], &err);
if (ret != TINYEXR_SUCCESS) {
printf("err: %s\n", err);
return -1;
}
}
std::vector<float> buf(dst_width * dst_height * 4);
int ret = stbir_resize_float(rgba, width, height, width*4*sizeof(float), &buf.at(0), dst_width, dst_height,dst_width*4*sizeof(float), 4);
assert(ret != 0);
ret = SaveEXR(buf.data(), dst_width, dst_height, 4, /*fp16*/0, argv[2], &err);
if (ret != TINYEXR_SUCCESS) {
if (err) {
fprintf(stderr, "err: %s\n", err);
FreeEXRErrorMessage(err);
}
}
return (ret == TINYEXR_SUCCESS);
}
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