X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=libs%2Fgoat3d%2Fsrc%2Fchunk.c;fp=libs%2Fgoat3d%2Fsrc%2Fchunk.c;h=9043357e4ce322e3c13146bdeaaf0dd0b485eaec;hb=487d801f62b3f7cea009b5e560cfd06e57170970;hp=0000000000000000000000000000000000000000;hpb=103b67f9f1e041dc5f6ffbb59004ebe846e3f3f9;p=deeprace

diff --git a/libs/goat3d/src/chunk.c b/libs/goat3d/src/chunk.c
new file mode 100644
index 0000000..9043357
--- /dev/null
+++ b/libs/goat3d/src/chunk.c
@@ -0,0 +1,47 @@
+/*
+goat3d - 3D scene, and animation file format library.
+Copyright (C) 2013-2018  John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "goat3d.h"
+#include "chunk.h"
+
+void g3dimpl_chunk_header(struct chunk_header *hdr, int id)
+{
+	hdr->id = id;
+	hdr->size = sizeof *hdr;
+}
+
+int g3dimpl_write_chunk_header(const struct chunk_header *hdr, struct goat3d_io *io)
+{
+	io->seek(-(long)hdr->size, SEEK_CUR, io->cls);
+	if(io->write(hdr, sizeof *hdr, io->cls) < (long)sizeof *hdr) {
+		return -1;
+	}
+	return 0;
+}
+
+int g3dimpl_read_chunk_header(struct chunk_header *hdr, struct goat3d_io *io)
+{
+	if(io->read(hdr, sizeof *hdr, io->cls) < (long)sizeof *hdr) {
+		return -1;
+	}
+	return 0;
+}
+
+void g3dimpl_skip_chunk(const struct chunk_header *hdr, struct goat3d_io *io)
+{
+	io->seek(hdr->size - sizeof *hdr, SEEK_CUR, io->cls);
+}