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Diffstat (limited to 'base/sjpx_luratech.h')
| -rw-r--r-- | base/sjpx_luratech.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/base/sjpx_luratech.h b/base/sjpx_luratech.h new file mode 100644 index 00000000..a2f4db4d --- /dev/null +++ b/base/sjpx_luratech.h @@ -0,0 +1,103 @@ +/* Copyright (C) 2001-2019 Artifex Software, Inc. + All Rights Reserved. + + This software is provided AS-IS with no warranty, either express or + implied. + + This software is distributed under license and may not be copied, + modified or distributed except as expressly authorized under the terms + of the license contained in the file LICENSE in this distribution. + + Refer to licensing information at http://www.artifex.com or contact + Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato, + CA 94945, U.S.A., +1(415)492-9861, for further information. +*/ + + +/* Definitions for JPXDecode filter (JPEG 2000) */ +/* we link to the Luratech CSDK for the actual decoding */ + +#ifndef sjpx_luratech_INCLUDED +# define sjpx_luratech_INCLUDED + +/* Requires scommon.h; strimpl.h if any templates are referenced */ + +#include "scommon.h" +#include <lwf_jp2.h> + +/* define colorspace enumeration for the decompressed image data */ +typedef enum { + gs_jpx_cs_unset, /* colorspace hasn't been set */ + gs_jpx_cs_gray, /* single component grayscale image */ + gs_jpx_cs_rgb, /* three component (s)RGB image */ + gs_jpx_cs_cmyk, /* four component CMYK image */ + gs_jpx_cs_indexed /* PDF image wants raw index values */ +} gs_jpx_cs; + +/* Stream state for the Luratech jp2 codec + * We rely on our finalization call to free the + * associated handle and pointers. + */ +typedef struct stream_jpxd_state_s +{ + stream_state_common; /* a define from scommon.h */ + JP2_Decomp_Handle handle; /* library decoder handle */ + unsigned char *inbuf; /* input data buffer */ + unsigned long inbuf_size; + unsigned long inbuf_fill; + gs_jpx_cs colorspace; /* requested output colorspace */ + bool alpha; /* return opacity channel */ + bool image_is_indexed; /* image is indexed, needs decoding */ + /* if colorspace != gs_jpx_cs_indexed */ + int ncomp; /* number of image components */ + int bpc; /* sample bits per component */ + int *clut; /* channel indices */ + unsigned long width, height; + unsigned long stride; + unsigned char *image; /* decoded image buffer */ + long offset; /* offset into the image buffer of the next + byte to be returned */ +} +stream_jpxd_state; + +#define private_st_jpxd_state() \ + gs_private_st_simple(st_jpxd_state, stream_jpxd_state,\ + "JPXDecode filter state") +extern const stream_template s_jpxd_template; + +/* JPX encoder internal state */ +typedef struct stream_jpxe_state_s { + stream_state_common; /* inherit base object from scommon.h */ + JP2_Comp_Handle handle; /* compression library context */ + + /* the following members must be set by the caller: */ + unsigned long width, height;/* image dimensions */ + gs_jpx_cs colorspace; /* colorspace of the input image data */ + unsigned int bpc; /* sample depth of each channel in bits */ + + /* the following members can be optionally set by the caller: */ + unsigned int quality; /* compressed image quality target; 1-100 + leave unset for the default */ + int lossless; /* set to 1 to specify lossless image + compression; overrides quality */ + + /* the remainder are handled internally: */ + unsigned int components; /* number of image channels */ + unsigned long stride; /* line length in bytes */ + unsigned char *inbuf; /* input image data buffer */ + unsigned long insize; /* allocated size of buffer */ + unsigned long infill; /* bytes written to the buffer */ + + unsigned char *outbuf; /* output data buffer */ + unsigned long outsize; /* size of the data buffer in bytes */ + unsigned long outfill; /* bytes written to the buffer */ + unsigned long offset; /* bytes written from the buffer */ +} stream_jpxe_state; + +#define private_st_jpxe_state() \ + gs_private_st_simple(st_jpxe_state, stream_jpxe_state, \ + "jpx encode filter state") + +extern const stream_template s_jpxe_template; + +#endif /* sjpx_luratech_INCLUDED */ |