OPENGL: Merged from trunk, from rev 52105 to 53396.

This includes an rather hacky attempt to merge all the recent gp2x backend
changes into the branch. I suppose the gp2x backend and probably all new
backends, i.e. gph, dingux etc., might not compile anymore.

Since I have no way of testing those it would be nice if porters could look
into getting those up to speed in this branch.

svn-id: r53399

1 files changed, 65 insertions, 0 deletions

diff --git a/engines/sword25/util/pluto/pdep/lzio.h b/engines/sword25/util/pluto/pdep/lzio.h
new file mode 100644
index 0000000000..4e654a52c9
--- /dev/null
+++ b/engines/sword25/util/pluto/pdep/lzio.h
@@ -0,0 +1,65 @@
+/*
+** $Id: lzio.h,v 1.21.1.1 2007/12/27 13:02:25 roberto Exp $
+** Buffered streams
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef lzio_h
+#define lzio_h
+
+#include "lua.h"
+
+
+#define EOZ	(-1)			/* end of stream */
+
+typedef struct Zio ZIO;
+
+#define char2int(c)	cast(int, cast(unsigned char, (c)))
+
+#define zgetc(z)  (((z)->n--)>0 ?  char2int(*(z)->p++) : pdep_fill(z))
+
+typedef struct Mbuffer {
+  char *buffer;
+  size_t n;
+  size_t buffsize;
+} Mbuffer;
+
+#define pdep_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0)
+
+#define pdep_buffer(buff)	((buff)->buffer)
+#define pdep_sizebuffer(buff)	((buff)->buffsize)
+#define pdep_bufflen(buff)	((buff)->n)
+
+#define pdep_resetbuffer(buff) ((buff)->n = 0)
+
+
+#define pdep_resizebuffer(L, buff, size) \
+	(pdep_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \
+	(buff)->buffsize = size)
+
+#define pdep_freebuffer(L, buff)	pdep_resizebuffer(L, buff, 0)
+
+
+LUAI_FUNC char *pdep_openspace (lua_State *L, Mbuffer *buff, size_t n);
+LUAI_FUNC void pdep_init (lua_State *L, ZIO *z, lua_Reader reader,
+                                        void *data);
+LUAI_FUNC size_t pdep_read (ZIO* z, void* b, size_t n);	/* read next n bytes */
+LUAI_FUNC int pdep_lookahead (ZIO *z);
+
+
+
+/* --------- Private Part ------------------ */
+
+struct Zio {
+  size_t n;			/* bytes still unread */
+  const char *p;		/* current position in buffer */
+  lua_Reader reader;
+  void* data;			/* additional data */
+  lua_State *L;			/* Lua state (for reader) */
+};
+
+
+LUAI_FUNC int pdep_fill (ZIO *z);
+
+#endif