diff options
Diffstat (limited to 'include/stream/filter.h')
| -rw-r--r-- | include/stream/filter.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/include/stream/filter.h b/include/stream/filter.h new file mode 100644 index 00000000..bb33b8eb --- /dev/null +++ b/include/stream/filter.h @@ -0,0 +1,87 @@ +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_drop ## NAME (fz_filter*); \ + TYPE *VAR; \ + *fp = fz_malloc(sizeof(TYPE)); \ + if (!*fp) return fz_outofmem; \ + (*fp)->refs = 1; \ + (*fp)->process = fz_process ## NAME ; \ + (*fp)->drop = fz_drop ## NAME ; \ + (*fp)->consumed = 0; \ + (*fp)->produced = 0; \ + (*fp)->count = 0; \ + VAR = (TYPE*) *fp + +struct fz_filter_s +{ + int refs; + fz_error* (*process)(fz_filter *filter, fz_buffer *in, fz_buffer *out); + void (*drop)(fz_filter *filter); + int consumed; + int produced; + int count; +}; + +struct fz_buffer_s +{ + int refs; + int ownsdata; + 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); +fz_filter *fz_keepfilter(fz_filter *f); +void fz_dropfilter(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_newbufferwithdata(fz_buffer **bufp, unsigned char *data, int size); +fz_error *fz_rewindbuffer(fz_buffer *buf); +fz_error *fz_growbuffer(fz_buffer *buf); +fz_buffer *fz_keepbuffer(fz_buffer *buf); +void fz_dropbuffer(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); + |