* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
* Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * Copyright (c) 2010-2011, Kaori Hagihara
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
static opj_bool jp2_read_colr(opj_jp2_t *jp2, opj_cio_t *cio,
opj_jp2_box_t *box, opj_jp2_color_t *color);
+/**
+Write file Index (superbox)
+@param[in] offset_jp2c offset of jp2c box
+@param[in] length_jp2c length of jp2c box
+@param[in] offset_idx offset of cidx box
+@param[in] length_idx length of cidx box
+@param[in] cio file output handle
+@return length of fidx box
+*/
+static int write_fidx( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio);
+/**
+Write index Finder box
+@param[in] offset offset of fidx box
+@param[in] length length of fidx box
+@param[in] cio file output handle
+*/
+static void write_iptr( int offset, int length, opj_cio_t *cio);
+/**
+Write proxy box
+@param[in] offset_jp2c offset of jp2c box
+@param[in] length_jp2c length of jp2c box
+@param[in] offset_idx offset of cidx box
+@param[in] length_idx length of cidx box
+@param[in] cio file output handle
+*/
+static void write_prxy( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio);
/*@}*/
/*@}*/
return OPJ_TRUE;
}
+
+static int write_fidx( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio)
+{
+ int len, lenp;
+
+ lenp = cio_tell( cio);
+ cio_skip( cio, 4); /* L [at the end] */
+ cio_write( cio, JPIP_FIDX, 4); /* IPTR */
+
+ write_prxy( offset_jp2c, length_jp2c, offset_idx, offset_jp2c, cio);
+
+ len = cio_tell( cio)-lenp;
+ cio_seek( cio, lenp);
+ cio_write( cio, len, 4); /* L */
+ cio_seek( cio, lenp+len);
+
+ return len;
+}
+
+static void write_prxy( int offset_jp2c, int length_jp2c, int offset_idx, int length_idx, opj_cio_t *cio)
+{
+ int len, lenp;
+
+ lenp = cio_tell( cio);
+ cio_skip( cio, 4); /* L [at the end] */
+ cio_write( cio, JPIP_PRXY, 4); /* IPTR */
+
+ cio_write( cio, offset_jp2c, 8); /* OOFF */
+ cio_write( cio, length_jp2c, 4); /* OBH part 1 */
+ cio_write( cio, JP2_JP2C, 4); /* OBH part 2 */
+
+ cio_write( cio, 1,1); /* NI */
+
+ cio_write( cio, offset_idx, 8); /* IOFF */
+ cio_write( cio, length_idx, 4); /* IBH part 1 */
+ cio_write( cio, JPIP_CIDX, 4); /* IBH part 2 */
+
+ len = cio_tell( cio)-lenp;
+ cio_seek( cio, lenp);
+ cio_write( cio, len, 4); /* L */
+ cio_seek( cio, lenp+len);
+}
+
+static void write_iptr( int offset, int length, opj_cio_t *cio)
+{
+ int len, lenp;
+
+ lenp = cio_tell( cio);
+ cio_skip( cio, 4); /* L [at the end] */
+ cio_write( cio, JPIP_IPTR, 4); /* IPTR */
+
+ cio_write( cio, offset, 8);
+ cio_write( cio, length, 8);
+
+ len = cio_tell( cio)-lenp;
+ cio_seek( cio, lenp);
+ cio_write( cio, len, 4); /* L */
+ cio_seek( cio, lenp+len);
+}
+
+
/* ----------------------------------------------------------------------- */
/* JP2 decoder interface */
/* ----------------------------------------------------------------------- */
jp2->enumcs = 18; /* YUV */
jp2->precedence = 0; /* PRECEDENCE */
jp2->approx = 0; /* APPROX */
-
+
+ jp2->jpip_on = parameters->jpip_on;
}
opj_bool opj_jp2_encode(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info) {
+ int pos_iptr, pos_cidx, pos_jp2c, len_jp2c, end_pos, pos_fidx, len_fidx;
+
/* JP2 encoding */
/* JPEG 2000 Signature box */
/* JP2 Header box */
jp2_write_jp2h(jp2, cio);
+ if( jp2->jpip_on){
+ pos_iptr = cio_tell( cio);
+ cio_skip( cio, 24); /* IPTR further ! */
+
+ pos_jp2c = cio_tell( cio);
+ }
+
/* J2K encoding */
+ if(!(len_jp2c = jp2_write_jp2c( jp2, cio, image, cstr_info))){
+ opj_event_msg(jp2->cinfo, EVT_ERROR, "Failed to encode image\n");
+ return OPJ_FALSE;
+ }
- if(!jp2_write_jp2c(jp2, cio, image, cstr_info)) {
- opj_event_msg(jp2->cinfo, EVT_ERROR, "Failed to encode image\n");
- return OPJ_FALSE;
+ if( jp2->jpip_on){
+ pos_cidx = cio_tell( cio);
+
+ write_cidx( pos_jp2c+8, cio, image, *cstr_info, len_jp2c-8);
+
+ pos_fidx = cio_tell( cio);
+ len_fidx = write_fidx( pos_jp2c, len_jp2c, pos_cidx, cio_tell(cio), cio);
+
+ end_pos = cio_tell( cio);
+
+ cio_seek( cio, pos_iptr);
+ write_iptr( pos_fidx, len_fidx, cio);
+
+ cio_seek( cio, end_pos);
}
return OPJ_TRUE;
}
-
-