apngloader.h

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Alex Commit Client Upload Part 2 19/10/2026 00:06

1/*

3 *

4 * Permission is hereby granted, free of charge, to any person obtaining a copy

5 * of this software and associated documentation files (the "Software"), to deal

6 * in the Software without restriction, including without limitation the rights

7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

8 * copies of the Software, and to permit persons to whom the Software is

9 * furnished to do so, subject to the following conditions:

10 *

11 * The above copyright notice and this permission notice shall be included in

12 * all copies or substantial portions of the Software.

13 *

14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

20 * THE SOFTWARE.

21 */

23#ifndef APNGLOADER_H

24#define APNGLOADER_H

26#include <sstream>

28struct apng_data {

29 unsigned char *pdata;

30 unsigned int width;

31 unsigned int height;

32 unsigned int first_frame;

33 unsigned int last_frame;

34 unsigned char bpp;

35 unsigned char coltype;

36 unsigned int num_frames;

37 unsigned int num_plays;

38 unsigned short *frames_delay; // each frame delay in ms

39};

41// returns -1 on error, 0 on success

42int load_apng(std::stringstream& file, struct apng_data *apng);

43void save_png(std::stringstream& file, unsigned int width, unsigned int height, int channels, unsigned char *pixels);

44void free_apng(struct apng_data *apng);

46#endif