#define TINYEXR_IMPLEMENTATION

#define TINYEXR_IMPLEMENTATION
#include "tinyexr.h"

#include "exr-io.h"

#include <cstdio>
#include <iostream>

namespace exrio {

bool GetEXRLayers(const char *filename)
{
const char** layer_names = nullptr;
int num_layers = 0;
const char *err = nullptr;
int ret = EXRLayers(filename, &layer_names, &num_layers, &err);

if (err) {
fprintf(stderr, "EXR error = %s\n", err);
}

if (ret != 0) {
fprintf(stderr, "Load EXR err: %s\n", err);
return false;
}
if (num_layers > 0)
{
fprintf(stdout, "EXR Contains %i Layers\n", num_layers);
for (size_t i = 0; i < num_layers; ++i) {
fprintf(stdout, "Layer %i : %s\n", i + 1, layer_names[i]);
}
}
free(layer_names);
return true;
}

bool LoadEXRRGBA(float** rgba, int *w, int *h, const char* filename, const char* layername)
{
int width, height;
float* image;
const char *err = nullptr;
int ret = LoadEXRWithLayer(&image, &width, &height, filename, layername, &err);

if (err) {
fprintf(stderr, "EXR error = %s\n", err);
}

if (ret != 0) {
fprintf(stderr, "Load EXR err: %s\n", err);
return false;
}

(*rgba) = image;
(*w) = width;
(*h) = height;

return true;
}

}