Initial import

1 files changed, 80 insertions, 0 deletions

diff --git a/include/fitz/filter.h b/include/fitz/filter.h
new file mode 100644
index 00000000..6f234143
--- /dev/null
+++ b/include/fitz/filter.h
@@ -0,0 +1,80 @@
+typedef struct fz_filter_s fz_filter;
+typedef struct fz_buffer_s fz_buffer;
+
+#define FZ_BUFSIZE (32 * 1024)
+
+#define fz_ioneedin (&fz_kioneedin)
+#define fz_ioneedout (&fz_kioneedout)
+#define fz_iodone (&fz_kiodone)
+
+extern fz_error fz_kioneedin;
+extern fz_error fz_kioneedout;
+extern fz_error fz_kiodone;
+
+#define FZ_NEWFILTER(TYPE,VAR,NAME)                                     \
+    fz_error * fz_process ## NAME (fz_filter*,fz_buffer*,fz_buffer*);   \
+    void fz_free ## NAME (fz_filter*);                                  \
+    TYPE *VAR;                                                          \
+    *fp = fz_malloc(sizeof(TYPE));                                      \
+    if (!*fp) return fz_outofmem;                                       \
+    (*fp)->process = fz_process ## NAME ;                               \
+    (*fp)->free = fz_free ## NAME ;                                     \
+    (*fp)->consumed = 0;                                                \
+    (*fp)->produced = 0;                                                \
+    (*fp)->count = 0;                                                   \
+    VAR = (TYPE*) *fp
+
+struct fz_filter_s
+{
+	fz_error* (*process)(fz_filter *filter, fz_buffer *in, fz_buffer *out);
+	void (*free)(fz_filter *filter);
+	int consumed;
+	int produced;
+	int count;
+};
+
+struct fz_buffer_s
+{
+	unsigned char *bp;
+	unsigned char *rp;
+	unsigned char *wp;
+	unsigned char *ep;
+	int eof;
+};
+
+fz_error *fz_process(fz_filter *f, fz_buffer *in, fz_buffer *out);
+void fz_freefilter(fz_filter *f);
+
+fz_error *fz_newnullfilter(fz_filter **fp, int len);
+fz_error *fz_newarc4filter(fz_filter **fp, unsigned char *key, unsigned keylen);
+fz_error *fz_newpipeline(fz_filter **fp, fz_filter *head, fz_filter *tail);
+
+fz_error *fz_chainpipeline(fz_filter **fp, fz_filter *head, fz_filter *tail, fz_buffer *buf);
+void fz_unchainpipeline(fz_filter *pipe, fz_filter **oldfp, fz_buffer **oldbp);
+
+fz_error *fz_newbuffer(fz_buffer **bufp, int size);
+fz_error *fz_rewindbuffer(fz_buffer *buf);
+fz_error *fz_growbuffer(fz_buffer *buf);
+void fz_freebuffer(fz_buffer *buf);
+
+fz_error *fz_newa85d(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newa85e(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newahxd(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newahxe(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newrld(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newrle(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newdctd(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newdcte(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newfaxd(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newfaxe(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newflated(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newflatee(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newlzwd(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newlzwe(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newpredictd(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newpredicte(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newjbig2d(fz_filter **filterp, fz_obj *param);
+fz_error *fz_newjpxd(fz_filter **filterp, fz_obj *param);
+
+void fz_pushbackahxd(fz_filter *filter, fz_buffer *in, fz_buffer *out, int n);
+