1 /*

2 goat3d - 3D scene, character, and animation file format library.

3 Copyright (C) 2013-2014 John Tsiombikas <nuclear@member.fsf.org>

4

5 This program is free software: you can redistribute it and/or modify

6 it under the terms of the GNU Lesser General Public License as published by

7 the Free Software Foundation, either version 3 of the License, or

8 (at your option) any later version.

9

10 This program is distributed in the hope that it will be useful,

11 but WITHOUT ANY WARRANTY; without even the implied warranty of

12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

13 GNU Lesser General Public License for more details.

14

15 You should have received a copy of the GNU Lesser General Public License

16 along with this program. If not, see <http://www.gnu.org/licenses/>.

17 */

18 #include "goat3d.h"

19 #include "chunk.h"

20

21 using namespace g3dimpl;

22

23 ChunkHeader chunk_header(int id)

24 {

25 ChunkHeader hdr;

26 hdr.id = id;

27 hdr.size = sizeof hdr;

28 return hdr;

29 }

30

31 bool g3dimpl::write_chunk_header(const ChunkHeader *hdr, goat3d_io *io)

32 {

33 io->seek(-(long)hdr->size, SEEK_CUR, io->cls);

34 if(io->write(hdr, sizeof *hdr, io->cls) < (long)sizeof *hdr) {

35 return false;

36 }

37 return true;

38 }

39

40 bool g3dimpl::read_chunk_header(ChunkHeader *hdr, goat3d_io *io)

41 {

42 if(io->read(hdr, sizeof *hdr, io->cls) < (long)sizeof *hdr) {

43 return false;

44 }

45 return true;

46 }

47

48 void g3dimpl::skip_chunk(const ChunkHeader *hdr, goat3d_io *io)

49 {

50 io->seek(hdr->size - sizeof *hdr, SEEK_CUR, io->cls);

51 }