- the conv filter now enforces that the sum of the coefficients is

[imager.git] / iolayer.h

diff --git a/iolayer.h b/iolayer.h
index 358de0d02d1862a267fcd2fbd8f014cbc0b75839..ec164c0f3f4fc9fb2e5e5e999602956b2a8e4731 100644 (file)
--- a/iolayer.h
+++ b/iolayer.h
@@ -12,137 +12,23 @@
  */
 
 
-#include <stdio.h>
-#ifndef _MSC_VER
-#include <unistd.h>
-#endif
-#include <sys/types.h>
+#include "iolayert.h"
 
 /* #define BBSIZ 1096 */
-#define BBSIZ 1096
+#define BBSIZ 16384
 #define IO_FAKE_SEEK 1<<0L
 #define IO_TEMP_SEEK 1<<1L
 
 
-typedef union { int i; void *p; } iorp;
-
-typedef enum { FDSEEK, FDNOSEEK, BUFFER, CBSEEK, CBNOSEEK, BUFCHAIN } io_type;
-
-#ifdef _MSC_VER
-typedef int ssize_t;
-#endif
-
-struct _io_glue;
-
-/* Callbacks we give out */
-
-typedef ssize_t(*readp) (struct _io_glue *ig, void *buf, size_t count);
-typedef ssize_t(*writep)(struct _io_glue *ig, const void *buf, size_t count);
-typedef off_t  (*seekp) (struct _io_glue *ig, off_t offset, int whence);
-typedef void   (*closep)(struct _io_glue *ig);
-typedef ssize_t(*sizep) (struct _io_glue *ig);
-
-
-
-/* Callbacks we get */
-
-typedef ssize_t(*readl) (int fd, void *buf, size_t count);
-typedef ssize_t(*writel)(int fd, const void *buf, size_t count);
-typedef off_t  (*seekl) (int fd, off_t offset, int whence);
-typedef ssize_t(*sizel) (int fd);
-
-extern char *io_type_names[];
-
-
-typedef struct _io_blink {
-  char buf[BBSIZ];
-  /* size_t cnt; */
-  size_t len;                  /* How large is this buffer = BBZIS for now */
-  struct _io_blink *next;
-  struct _io_blink *prev;
-} io_blink;
-
-
-/* Structures that describe callback interfaces */
-
-typedef struct {
-  off_t offset;
-  off_t cpos;
-} io_ex_rseek;
-
-
-typedef struct {
-  off_t offset;
-  off_t cpos;
-  io_blink *head;
-  io_blink *tail;
-  io_blink *cp;
-} io_ex_fseek;
-
-
-typedef struct {
-  off_t offset;                        /* Offset of the source - not used */
-  off_t length;                        /* Total length of chain in bytes */
-  io_blink *head;              /* Start of chain */
-  io_blink *tail;              /* End of chain */
-  off_t tfill;                 /* End of stream in last link */
-  io_blink *cp;                        /* Current element of list */
-  off_t cpos;                  /* Offset within the current */
-  off_t gpos;                  /* Global position in stream */
-} io_ex_bchain;
-
-
-/* Structures to describe data sources */
-
-typedef struct {
-  io_type      type;
-  int          fd;
-} io_fdseek;
-
-typedef struct {
-  io_type      type;           /* Must be first parameter */
-  char         *name;          /* Data source name */
-  char         *c;
-  size_t       len;
-} io_buffer;
-
-typedef struct {
-  io_type      type;           /* Must be first parameter */
-  char         *name;          /* Data source name */
-  void         *p;             /* Callback data */
-  readl                readcb;
-  writel       writecb;
-  seekl                seekcb;
-} io_cb;
-
-typedef union {
-  io_type       type;
-  io_fdseek     fdseek;
-  io_buffer    buffer;
-  io_cb                cb;
-} io_obj;
-
-typedef struct _io_glue {
-  io_obj       source;
-  int          flags;          /* Flags */
-  void         *exdata;        /* Pair specific data */
-  readp                readcb;
-  writep       writecb;
-  seekp                seekcb;
-  closep       closecb;
-  sizep                sizecb;
-} io_glue;
-
-void io_obj_setp_buffer  (io_obj *io, void *p, size_t len);
-void io_obj_setp_cb      (io_obj *io, void *p, readl readcb, writel writecb, seekl seekcb);
 void io_glue_commit_types(io_glue *ig);
 void io_glue_gettypes    (io_glue *ig, int reqmeth);
 
-
 /* XS functions */
 io_glue *io_new_fd(int fd);
-io_glue *io_new_bufchain();
+io_glue *io_new_bufchain(void);
+io_glue *io_new_buffer(char *data, size_t len, i_io_closebufp_t closecb, void *closedata);
+io_glue *io_new_cb(void *p, i_io_readl_t readcb, i_io_writel_t writecb, i_io_seekl_t seekcb, i_io_closel_t closecb, i_io_destroyl_t destroycb);
 size_t   io_slurp(io_glue *ig, unsigned char **c);
-void io_glue_DESTROY(io_glue *ig);
+void     io_glue_destroy(io_glue *ig);
 
 #endif /* _IOLAYER_H_ */