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#ifndef IMV_LOADER_H
#define IMV_LOADER_H
/* Copyright (c) 2015 Harry Jeffery
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <FreeImage.h>
#include <SDL2/SDL.h>
#include <pthread.h>
struct imv_texture;
struct imv_loader {
pthread_mutex_t lock;
pthread_t bg_thread;
char *path;
FIBITMAP *out_bmp;
int out_is_new_image;
char *out_err;
FIMULTIBITMAP *mbmp;
FIBITMAP *bmp;
int width;
int height;
int cur_frame;
int next_frame;
int num_frames;
double frame_time;
};
/* Initialises an instance of imv_loader */
void imv_init_loader(struct imv_loader *img);
/* Cleans up all resources owned by a imv_loader instance */
void imv_destroy_loader(struct imv_loader *img);
/* Asynchronously load the given file */
void imv_loader_load_path(struct imv_loader *ldr, const char *path);
/* Returns 1 if image data is available. 0 if not. Caller is responsible for
* cleaning up the data returned. Each image is only returned once.
* out_is_frame indicates whether the returned image is a new image, or just
* a new frame of an existing one. */
int imv_loader_get_image(struct imv_loader *ldr, FIBITMAP **out_bmp,
int *out_is_frame);
/* If a file failed to loadd, return the path to that file. Otherwise returns
* NULL. Only returns the path once. Caller is responsible for cleaning up the
* string returned. */
char *imv_loader_get_error(struct imv_loader *ldr);
/* Trigger the next frame of the currently loaded image to be loaded and
* returned as soon as possible. */
void imv_loader_load_next_frame(struct imv_loader *ldr);
/* Tell the loader that dt time has passed. If the current image is animated,
* the loader will automatically load the next frame when it is due. */
void imv_loader_time_passed(struct imv_loader *ldr, double dt);
#endif
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