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1 vero 1 /*
2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2002-2003, Yannick Verschueren
5 * Copyright (c) 2005, Herve Drolon, FreeImage Team
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29 #ifndef __JP2_H
30 #define __JP2_H
31 /**
32 @file jp2.h
33 @brief The JPEG-2000 file format Reader/Writer (JP2)
34  
35 */
36  
37 /** @defgroup JP2 JP2 - JPEG-2000 file format reader/writer */
38 /*@{*/
39  
40 #define JPIP_JPIP 0x6a706970
41  
42 #define JP2_JP 0x6a502020 /**< JPEG 2000 signature box */
43 #define JP2_FTYP 0x66747970 /**< File type box */
44 #define JP2_JP2H 0x6a703268 /**< JP2 header box */
45 #define JP2_IHDR 0x69686472 /**< Image header box */
46 #define JP2_COLR 0x636f6c72 /**< Colour specification box */
47 #define JP2_JP2C 0x6a703263 /**< Contiguous codestream box */
48 #define JP2_URL 0x75726c20 /**< URL box */
49 #define JP2_DTBL 0x6474626c /**< Data Reference box */
50 #define JP2_BPCC 0x62706363 /**< Bits per component box */
51 #define JP2_JP2 0x6a703220 /**< File type fields */
52 #define JP2_PCLR 0x70636c72 /**< Palette box */
53 #define JP2_CMAP 0x636d6170 /**< Component Mapping box */
54 #define JP2_CDEF 0x63646566 /**< Channel Definition box */
55  
56 /* ----------------------------------------------------------------------- */
57 /**
58 Channel description: channel index, type, assocation
59 */
60 typedef struct opj_jp2_cdef_info
61 {
62 unsigned short cn, typ, asoc;
63 } opj_jp2_cdef_info_t;
64  
65 /**
66 Channel descriptions and number of descriptions
67 */
68 typedef struct opj_jp2_cdef
69 {
70 opj_jp2_cdef_info_t *info;
71 unsigned short n;
72 } opj_jp2_cdef_t;
73  
74 /**
75 Component mappings: channel index, mapping type, palette index
76 */
77 typedef struct opj_jp2_cmap_comp
78 {
79 unsigned short cmp;
80 unsigned char mtyp, pcol;
81 } opj_jp2_cmap_comp_t;
82  
83 /**
84 Palette data: table entries, palette columns
85 */
86 typedef struct opj_jp2_pclr
87 {
88 unsigned int *entries;
89 unsigned char *channel_sign;
90 unsigned char *channel_size;
91 opj_jp2_cmap_comp_t *cmap;
92 unsigned short nr_entries, nr_channels;
93 } opj_jp2_pclr_t;
94  
95 /**
96 Collector for ICC profile, palette, component mapping, channel description
97 */
98 typedef struct opj_jp2_color
99 {
100 unsigned char *icc_profile_buf;
101 int icc_profile_len;
102  
103 opj_jp2_cdef_t *jp2_cdef;
104 opj_jp2_pclr_t *jp2_pclr;
105 unsigned char jp2_has_colr;
106 } opj_jp2_color_t;
107  
108 /**
109 JP2 component
110 */
111 typedef struct opj_jp2_comps {
112 int depth;
113 int sgnd;
114 int bpcc;
115 } opj_jp2_comps_t;
116  
117 /**
118 JPEG-2000 file format reader/writer
119 */
120 typedef struct opj_jp2 {
121 /** codec context */
122 opj_common_ptr cinfo;
123 /** handle to the J2K codec */
124 opj_j2k_t *j2k;
125 unsigned int w;
126 unsigned int h;
127 unsigned int numcomps;
128 unsigned int bpc;
129 unsigned int C;
130 unsigned int UnkC;
131 unsigned int IPR;
132 unsigned int meth;
133 unsigned int approx;
134 unsigned int enumcs;
135 unsigned int precedence;
136 unsigned int brand;
137 unsigned int minversion;
138 unsigned int numcl;
139 unsigned int *cl;
140 opj_jp2_comps_t *comps;
141 unsigned int j2k_codestream_offset;
142 unsigned int j2k_codestream_length;
143 opj_bool jpip_on;
144 opj_bool ignore_pclr_cmap_cdef;
145 } opj_jp2_t;
146  
147 /**
148 JP2 Box
149 */
150 typedef struct opj_jp2_box {
151 int length;
152 int type;
153 int init_pos;
154 } opj_jp2_box_t;
155  
156 /** @name Exported functions */
157 /*@{*/
158 /* ----------------------------------------------------------------------- */
159 /**
160 Write the JP2H box - JP2 Header box (used in MJ2)
161 @param jp2 JP2 handle
162 @param cio Output buffer stream
163 */
164 void jp2_write_jp2h(opj_jp2_t *jp2, opj_cio_t *cio);
165 /**
166 Read the JP2H box - JP2 Header box (used in MJ2)
167 @param jp2 JP2 handle
168 @param cio Input buffer stream
169 @param ext Collector for profile, cdef and pclr data
170 @return Returns true if successful, returns false otherwise
171 */
172 opj_bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio, opj_jp2_color_t *color);
173 /**
174 Creates a JP2 decompression structure
175 @param cinfo Codec context info
176 @return Returns a handle to a JP2 decompressor if successful, returns NULL otherwise
177 */
178 opj_jp2_t* jp2_create_decompress(opj_common_ptr cinfo);
179 /**
180 Destroy a JP2 decompressor handle
181 @param jp2 JP2 decompressor handle to destroy
182 */
183 void jp2_destroy_decompress(opj_jp2_t *jp2);
184 /**
185 Setup the decoder decoding parameters using user parameters.
186 Decoding parameters are returned in jp2->j2k->cp.
187 @param jp2 JP2 decompressor handle
188 @param parameters decompression parameters
189 */
190 void jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters);
191 /**
192 Decode an image from a JPEG-2000 file stream
193 @param jp2 JP2 decompressor handle
194 @param cio Input buffer stream
195 @param cstr_info Codestream information structure if required, NULL otherwise
196 @return Returns a decoded image if successful, returns NULL otherwise
197 */
198 opj_image_t* opj_jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio, opj_codestream_info_t *cstr_info);
199 /**
200 Creates a JP2 compression structure
201 @param cinfo Codec context info
202 @return Returns a handle to a JP2 compressor if successful, returns NULL otherwise
203 */
204 opj_jp2_t* jp2_create_compress(opj_common_ptr cinfo);
205 /**
206 Destroy a JP2 compressor handle
207 @param jp2 JP2 compressor handle to destroy
208 */
209 void jp2_destroy_compress(opj_jp2_t *jp2);
210 /**
211 Setup the encoder parameters using the current image and using user parameters.
212 Coding parameters are returned in jp2->j2k->cp.
213 @param jp2 JP2 compressor handle
214 @param parameters compression parameters
215 @param image input filled image
216 */
217 void jp2_setup_encoder(opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_t *image);
218 /**
219 Encode an image into a JPEG-2000 file stream
220 @param jp2 JP2 compressor handle
221 @param cio Output buffer stream
222 @param image Image to encode
223 @param cstr_info Codestream information structure if required, NULL otherwise
224 @return Returns true if successful, returns false otherwise
225 */
226 opj_bool opj_jp2_encode(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info);
227  
228 /* ----------------------------------------------------------------------- */
229 /*@}*/
230  
231 /*@}*/
232  
233 #endif /* __JP2_H */
234