diff options
Diffstat (limited to 'indexer_JPIP/jp2.c')
| -rw-r--r-- | indexer_JPIP/jp2.c | 68 |
1 files changed, 55 insertions, 13 deletions
diff --git a/indexer_JPIP/jp2.c b/indexer_JPIP/jp2.c index 5588c868..1c193ad7 100644 --- a/indexer_JPIP/jp2.c +++ b/indexer_JPIP/jp2.c @@ -1,6 +1,6 @@ /* - * Copyright (c) 2003, Yannick Verschueren - * Copyright (c) 2003, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium + * Copyright (c) 2003-2004, Yannick Verschueren + * Copyright (c) 2003-2004, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -28,9 +28,6 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> -#include <setjmp.h> -#include <math.h> -#include <unistd.h> #include "j2k.h" #include "cio.h" @@ -176,13 +173,19 @@ void jp2_write_colr(int BPC_ok, j2k_image_t *j2k_img) cio_seek(lenp+len); } +/* + * Write the JP2H box + * + * JP2 Header box + * + */ void jp2_write_jp2h(j2k_image_t *j2k_img) { int len, lenp, BPC_ok; lenp=cio_tell(); cio_skip(4); - cio_write(JP2_JP2H, 4); // JP2H + cio_write(JP2_JP2H, 4); /* JP2H */ BPC_ok=jp2_write_ihdr(j2k_img); @@ -192,29 +195,53 @@ void jp2_write_jp2h(j2k_image_t *j2k_img) len=cio_tell()-lenp; cio_seek(lenp); - cio_write(len,4); // L + cio_write(len,4); /* L */ cio_seek(lenp+len); } +/* + * Write the FTYP box + * + * File type box + * + */ void jp2_write_ftyp() { int len, lenp; lenp=cio_tell(); cio_skip(4); - cio_write(JP2_FTYP, 4); // FTYP + cio_write(JP2_FTYP, 4); /* FTYP */ - cio_write(JP2,4); // BR - cio_write(0,4); // MinV - cio_write(JP2,4); // CL0 : JP2 - cio_write(JPIP_JPIP,4); // CL1 : JPIP + cio_write(JP2,4); /* BR */ + cio_write(0,4); /* MinV */ + cio_write(JP2,4); /* CL0 : JP2 */ + cio_write(JPIP_JPIP,4); /* CL1 : JPIP */ len=cio_tell()-lenp; cio_seek(lenp); - cio_write(len,4); // L + cio_write(len,4); /* L */ cio_seek(lenp+len); } +/* + * Read the FTYP box + * + * File type box + * + */ +void jp2_read_ftyp(int length) +{ + int BR, MinV, type, i; + + BR = cio_read(4); /* BR */ + MinV = cio_read(4); /* MinV */ + length-=8; + + for (i=length/4;i>0;i--) + type = cio_read(4); /* CLi : JP2, JPIP */ +} + int jp2_write_jp2c(char *J2K_file) { int len, lenp, totlen, i; @@ -257,3 +284,18 @@ void jp2_write_jp() cio_write(len,4); // L cio_seek(lenp+len); } + +/* + * Read the JP box + * + * JPEG 2000 signature + * + * return 1 if error else 0 + */ +int jp2_read_jp() +{ + if (0x0d0a870a!=cio_read(4)) + return 1; + else + return 0; +} |