goat3d: src/chunk.cc annotate

goat3d

annotate src/chunk.cc @ 83:57e745dd13c2

almost working

author	John Tsiombikas <nuclear@member.fsf.org>
date	Mon, 12 May 2014 07:22:52 +0300
parents	498ca7ac7047
children

rev	line source
nuclear@54	1 /*
nuclear@54	2 goat3d - 3D scene, character, and animation file format library.
nuclear@54	3 Copyright (C) 2013-2014 John Tsiombikas <nuclear@member.fsf.org>
nuclear@54	4
nuclear@54	5 This program is free software: you can redistribute it and/or modify
nuclear@54	6 it under the terms of the GNU Lesser General Public License as published by
nuclear@54	7 the Free Software Foundation, either version 3 of the License, or
nuclear@54	8 (at your option) any later version.
nuclear@54	9
nuclear@54	10 This program is distributed in the hope that it will be useful,
nuclear@54	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@54	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@54	13 GNU Lesser General Public License for more details.
nuclear@54	14
nuclear@54	15 You should have received a copy of the GNU Lesser General Public License
nuclear@54	16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@54	17 */
nuclear@13	18 #include "goat3d.h"
nuclear@13	19 #include "chunk.h"
nuclear@13	20
nuclear@47	21 using namespace g3dimpl;
nuclear@47	22
nuclear@13	23 ChunkHeader chunk_header(int id)
nuclear@13	24 {
nuclear@13	25 ChunkHeader hdr;
nuclear@13	26 hdr.id = id;
nuclear@13	27 hdr.size = sizeof hdr;
nuclear@13	28 return hdr;
nuclear@13	29 }
nuclear@13	30
nuclear@47	31 bool g3dimpl::write_chunk_header(const ChunkHeader hdr, goat3d_io io)
nuclear@13	32 {
nuclear@24	33 io->seek(-(long)hdr->size, SEEK_CUR, io->cls);
nuclear@24	34 if(io->write(hdr, sizeof hdr, io->cls) < (long)sizeof hdr) {
nuclear@13	35 return false;
nuclear@13	36 }
nuclear@13	37 return true;
nuclear@13	38 }
nuclear@13	39
nuclear@47	40 bool g3dimpl::read_chunk_header(ChunkHeader hdr, goat3d_io io)
nuclear@13	41 {
nuclear@24	42 if(io->read(hdr, sizeof hdr, io->cls) < (long)sizeof hdr) {
nuclear@13	43 return false;
nuclear@13	44 }
nuclear@13	45 return true;
nuclear@13	46 }
nuclear@13	47
nuclear@47	48 void g3dimpl::skip_chunk(const ChunkHeader hdr, goat3d_io io)
nuclear@13	49 {
nuclear@13	50 io->seek(hdr->size - sizeof *hdr, SEEK_CUR, io->cls);
nuclear@13	51 }