libdart_openmvg/src/image.cxx

105 lines
2.4 KiB
C++

#include "./image.h"
#ifdef __cplusplus
#include <openMVG/image/image_io.hpp>
#include <openMVG/image/image_concat.hpp>
#endif // __ cplusplus
_FFI_PLUGIN
ImageResult *image_result_new(const u_char *data, const size_t data_len) {
ImageResult *r = (ImageResult *) malloc(sizeof(ImageResult));
r->data = (u_char *) calloc(sizeof(u_char), data_len);
memcpy(r->data, data, data_len * sizeof(u_char));
r->data_len = data_len;
r->error = 0;
return r;
}
_FFI_PLUGIN
ImageResult *image_result_new_error(const error_t err) {
ImageResult *r = (ImageResult *) malloc(sizeof(ImageResult));
r->data = NULL;
r->data_len = 0;
r->error = err;
return r;
}
_FFI_PLUGIN
void free_image_result(ImageResult *image_result) {
free(image_result->data);
free(image_result);
}
const Frame *new_frame_from_handle(FILE *stream, int w, int h, int depth)
{
Frame *f = (Frame *)malloc(sizeof(Frame));
f->stream = stream;
f->w = w;
f->h = h;
f->depth = depth;
return f;
}
FILE *make_buffer(const uint8_t *data, const size_t data_len)
{
FILE *file = fmemopen((void *)data, data_len, "r+");
if (file == NULL)
{
perror("Error opening file");
return NULL;
}
// Seek to the beginning of the file
rewind(file);
// Write the data to the file
fwrite(data, sizeof(uint8_t), data_len, file);
return file;
}
_FFI_PLUGIN
const Frame *
new_frame_from_data(const uint8_t *data, const size_t data_len, int w, int h, int depth)
{
FILE *buf = make_buffer(data, data_len);
return new_frame_from_handle(buf, w, h, depth);
}
#ifdef __cplusplus
extern "C"
ImageResult *Archimedes::get_image_data(const Frame *frame)
{
std::vector<unsigned char> imageData;
rewind(frame->stream);
if (!openMVG::image::ReadPngStream(frame->stream, &imageData, (int *)&(frame->w), (int *)&(frame->h), (int *)&(frame->depth))) {
printf("ERROR: Could not read stream!\n");
return image_result_new_error(1);
}
printf("Read %lu bytes.\n", imageData.size());
const unsigned char *data = imageData.data();
return image_result_new(data, imageData.size());
}
#endif
_FFI_PLUGIN
ImageResult *archimedes_get_image_data(const Frame *frame)
{
return Archimedes::get_image_data(frame);
}
_FFI_PLUGIN
int Archimedes::images_to_sfm(const Frame **frames, size_t n_frames)
{
return 0;
}
_FFI_PLUGIN
int archimedes_images_to_sfm(const Frame **frames, size_t n_frames)
{
return Archimedes::images_to_sfm(frames, n_frames);
}