2 * Copyright (c) 2001-2003, David Janssens
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3 * Copyright (c) 2002-2003, Yannick Verschueren
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4 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
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5 * Copyright (c) 2005, Hervé Drolon, FreeImage Team
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6 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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7 * All rights reserved.
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9 * Redistribution and use in source and binary forms, with or without
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10 * modification, are permitted provided that the following conditions
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12 * 1. Redistributions of source code must retain the above copyright
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13 * notice, this list of conditions and the following disclaimer.
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14 * 2. Redistributions in binary form must reproduce the above copyright
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15 * notice, this list of conditions and the following disclaimer in the
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16 * documentation and/or other materials provided with the distribution.
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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28 * POSSIBILITY OF SUCH DAMAGE.
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34 @brief The JPEG-2000 Codestream Reader/Writer (J2K)
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36 The functions in J2K.C have for goal to read/write the several parts of the codestream: markers and data.
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39 /** @defgroup J2K J2K - JPEG-2000 codestream reader/writer */
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42 #define J2K_CP_CSTY_PRT 0x01
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43 #define J2K_CP_CSTY_SOP 0x02
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44 #define J2K_CP_CSTY_EPH 0x04
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45 #define J2K_CCP_CSTY_PRT 0x01
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46 #define J2K_CCP_CBLKSTY_LAZY 0x01
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47 #define J2K_CCP_CBLKSTY_RESET 0x02
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48 #define J2K_CCP_CBLKSTY_TERMALL 0x04
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49 #define J2K_CCP_CBLKSTY_VSC 0x08
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50 #define J2K_CCP_CBLKSTY_PTERM 0x10
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51 #define J2K_CCP_CBLKSTY_SEGSYM 0x20
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52 #define J2K_CCP_QNTSTY_NOQNT 0
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53 #define J2K_CCP_QNTSTY_SIQNT 1
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54 #define J2K_CCP_QNTSTY_SEQNT 2
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56 /* ----------------------------------------------------------------------- */
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58 #define J2K_MS_SOC 0xff4f /**< SOC marker value */
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59 #define J2K_MS_SOT 0xff90 /**< SOT marker value */
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60 #define J2K_MS_SOD 0xff93 /**< SOD marker value */
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61 #define J2K_MS_EOC 0xffd9 /**< EOC marker value */
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62 #define J2K_MS_SIZ 0xff51 /**< SIZ marker value */
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63 #define J2K_MS_COD 0xff52 /**< COD marker value */
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64 #define J2K_MS_COC 0xff53 /**< COC marker value */
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65 #define J2K_MS_RGN 0xff5e /**< RGN marker value */
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66 #define J2K_MS_QCD 0xff5c /**< QCD marker value */
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67 #define J2K_MS_QCC 0xff5d /**< QCC marker value */
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68 #define J2K_MS_POC 0xff5f /**< POC marker value */
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69 #define J2K_MS_TLM 0xff55 /**< TLM marker value */
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70 #define J2K_MS_PLM 0xff57 /**< PLM marker value */
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71 #define J2K_MS_PLT 0xff58 /**< PLT marker value */
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72 #define J2K_MS_PPM 0xff60 /**< PPM marker value */
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73 #define J2K_MS_PPT 0xff61 /**< PPT marker value */
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74 #define J2K_MS_SOP 0xff91 /**< SOP marker value */
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75 #define J2K_MS_EPH 0xff92 /**< EPH marker value */
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76 #define J2K_MS_CRG 0xff63 /**< CRG marker value */
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77 #define J2K_MS_COM 0xff64 /**< COM marker value */
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79 /* ----------------------------------------------------------------------- */
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82 Values that specify the status of the decoding process when decoding the main header.
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83 These values may be combined with a | operator.
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85 typedef enum J2K_STATUS {
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86 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
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87 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
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88 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
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89 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
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90 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
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91 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
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92 J2K_STATE_NEOC = 0x0040 /**< the decoding process must not expect a EOC marker because the codestream is truncated */
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95 /* ----------------------------------------------------------------------- */
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98 Quantization stepsize
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100 typedef struct opj_stepsize {
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108 Tile-component coding parameters
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110 typedef struct opj_tccp {
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111 /** coding style */
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113 /** number of resolutions */
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114 int numresolutions;
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115 /** code-blocks width */
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117 /** code-blocks height */
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119 /** code-block coding style */
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121 /** discrete wavelet transform identifier */
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123 /** quantisation style */
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125 /** stepsizes used for quantization */
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126 opj_stepsize_t stepsizes[J2K_MAXBANDS];
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127 /** number of guard bits */
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129 /** Region Of Interest shift */
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131 /** precinct width */
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132 int prcw[J2K_MAXRLVLS];
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133 /** precinct height */
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134 int prch[J2K_MAXRLVLS];
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138 Tile coding parameters :
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139 this structure is used to store coding/decoding parameters common to all
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140 tiles (information like COD, COC in main header)
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142 typedef struct opj_tcp {
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143 /** 1 : first part-tile of a tile */
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145 /** coding style */
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147 /** progression order */
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148 OPJ_PROG_ORDER prg;
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149 /** number of layers */
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151 /** multi-component transform identifier */
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153 /** rates of layers */
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155 /** number of progression order changes */
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157 /** indicates if a POC marker has been used O:NO, 1:YES */
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159 /** progression order changes */
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160 opj_poc_t pocs[32];
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161 /** packet header store there for futur use in t2_decode_packet */
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162 unsigned char *ppt_data;
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163 /** pointer remaining on the first byte of the first header if ppt is used */
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164 unsigned char *ppt_data_first;
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165 /** If ppt == 1 --> there was a PPT marker for the present tile */
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167 /** used in case of multiple marker PPT (number of info already stored) */
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171 /** add fixed_quality */
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172 float distoratio[100];
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173 /** tile-component coding parameters */
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180 typedef struct opj_cp {
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181 /** allocation by rate/distortion */
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183 /** allocation by fixed layer */
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185 /** add fixed_quality */
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187 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
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189 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
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191 /** 0 = no index || 1 = index */
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201 /** comment for coding */
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203 /** number of tiles in width */
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205 /** number of tiles in heigth */
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207 /** ID number of the tiles present in the codestream */
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209 /** size of the vector tileno */
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211 /** packet header store there for futur use in t2_decode_packet */
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212 unsigned char *ppm_data;
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213 /** pointer remaining on the first byte of the first header if ppm is used */
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214 unsigned char *ppm_data_first;
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215 /** if ppm == 1 --> there was a PPM marker for the present tile */
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217 /** use in case of multiple marker PPM (number of info already store) */
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219 /** use in case of multiple marker PPM (case on non-finished previous info) */
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223 /** tile coding parameters */
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230 Information concerning a packet inside tile
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232 typedef struct opj_packet_info {
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233 /** start position */
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235 /** end position */
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237 /** ADD for Marcela */
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239 } opj_packet_info_t;
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242 Index structure : information regarding tiles inside image
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244 typedef struct opj_tile_info {
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245 /** value of thresh for each layer by tile cfr. Marcela */
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247 /** number of tile */
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249 /** start position */
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251 /** end position of the header */
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253 /** end position */
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255 /** precinct number for each resolution level (width) */
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257 /** precinct number for each resolution level (height) */
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259 /** precinct size (in power of 2), in X for each resolution level */
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261 /** precinct size (in power of 2), in Y for each resolution level */
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263 /** information concerning packets inside tile */
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264 opj_packet_info_t *packet;
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265 /** add fixed_quality */
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267 /** add fixed_quality */
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274 typedef struct opj_image_info {
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275 /** 0 = no index || 1 = index */
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277 /** maximum distortion reduction on the whole image (add for Marcela) */
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279 /** packet number */
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281 /** writing the packet in the index with t2_encode_packets */
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285 /** image height */
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287 /** progression order */
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288 OPJ_PROG_ORDER prog;
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289 /** tile size in x */
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291 /** tile size in y */
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297 /** number of tiles in X */
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299 /** number of tiles in Y */
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301 /** component numbers */
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303 /** number of layer */
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305 /** number of decomposition */
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307 /** main header position */
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309 /** codestream's size */
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310 int codestream_size;
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311 /** information regarding tiles inside image */
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312 opj_tile_info_t *tile;
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313 } opj_image_info_t;
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316 JPEG-2000 codestream reader/writer
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318 typedef struct opj_j2k {
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319 /** codec context */
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320 opj_common_ptr cinfo;
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322 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
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324 /** number of the tile curently concern by coding/decoding */
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327 locate the position of the end of the tile in the codestream,
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328 used to detect a truncated codestream (in j2k_read_sod)
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330 unsigned char *eot;
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332 locate the start position of the SOT marker of the current coded tile:
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333 after encoding the tile, a jump (in j2k_write_sod) is done to the SOT marker to store the value of its length.
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338 as the J2K-file is written in several parts during encoding,
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339 it enables to make the right correction in position return by cio_tell
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341 int pos_correction;
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342 /** array used to store the data of each tile */
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343 unsigned char **tile_data;
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344 /** array used to store the length of each tile */
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347 decompression only :
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348 store decoding parameters common to all tiles (information like COD, COC in main header)
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350 opj_tcp_t *default_tcp;
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351 /** pointer to the encoded / decoded image */
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352 opj_image_t *image;
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353 /** pointer to the coding parameters */
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355 /** helper used to write the index file */
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356 opj_image_info_t *image_info;
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357 /** pointer to the byte i/o stream */
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361 /** @name Exported functions */
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363 /* ----------------------------------------------------------------------- */
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365 Creates a J2K decompression structure
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366 @param cinfo Codec context info
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367 @return Returns a handle to a J2K decompressor if successful, returns NULL otherwise
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369 opj_j2k_t* j2k_create_decompress(opj_common_ptr cinfo);
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371 Destroy a J2K decompressor handle
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372 @param j2k J2K decompressor handle to destroy
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374 void j2k_destroy_decompress(opj_j2k_t *j2k);
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376 Setup the decoder decoding parameters using user parameters.
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377 Decoding parameters are returned in j2k->cp.
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378 @param j2k J2K decompressor handle
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379 @param parameters decompression parameters
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381 void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
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383 Decode an image from a JPEG-2000 codestream
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384 @param j2k J2K decompressor handle
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385 @param cio Input buffer stream
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386 @return Returns a decoded image if successful, returns NULL otherwise
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388 opj_image_t* j2k_decode(opj_j2k_t *j2k, opj_cio_t *cio);
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390 Decode an image form a JPT-stream (JPEG 2000, JPIP)
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391 @param j2k J2K decompressor handle
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392 @param cio Input buffer stream
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393 @return Returns a decoded image if successful, returns NULL otherwise
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395 opj_image_t* j2k_decode_jpt_stream(opj_j2k_t *j2k, opj_cio_t *cio);
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397 Creates a J2K compression structure
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398 @param cinfo Codec context info
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399 @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
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401 opj_j2k_t* j2k_create_compress(opj_common_ptr cinfo);
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403 Destroy a J2K compressor handle
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404 @param j2k J2K compressor handle to destroy
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406 void j2k_destroy_compress(opj_j2k_t *j2k);
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408 Setup the encoder parameters using the current image and using user parameters.
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409 Coding parameters are returned in j2k->cp.
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410 @param j2k J2K compressor handle
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411 @param parameters compression parameters
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412 @param image input filled image
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414 void j2k_setup_encoder(opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_t *image);
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416 Encode an image into a JPEG-2000 codestream
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417 @param j2k J2K compressor handle
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418 @param cio Output buffer stream
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419 @param image Image to encode
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420 @param index Name of the index file if required, NULL otherwise
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421 @return Returns true if successful, returns false otherwise
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423 bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, char *index);
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424 /* ----------------------------------------------------------------------- */
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429 #endif /* __J2K_H */
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