int jp2_decode(unsigned char *src, int len, jp2_struct_t * jp2_struct,
j2k_cp_t * cp)
{
cio_init(src, len);
if (jp2_read_jp())
return 1;
if (jp2_read_ftyp(jp2_struct))
return 1;
if (jp2_read_jp2h(jp2_struct))
return 1;
if (jp2_read_jp2c(src, len, jp2_struct, cp))
return 1;
return 0;
}
int jp2_write_jp2c(j2k_image_t * img, j2k_cp_t * cp, char *jp2_buffer,
char *index)
{
int len, i, set;
char *cstr, *out;
jp2_box_t box;
box.init_pos = cio_tell();
cio_skip(4);
cio_write(JP2_JP2C, 4); // JP2C
if (jpwl_cp.JPWL_on){
set=cio_tell();
cstr = (char *) malloc( cp->tdx * cp->tdy * cp->tw * cp->th * 10*sizeof(char)); /* Allocate memory for all tiles */
cio_init(cstr, cp->tdx * cp->tdy * cp->tw * cp->th * 10);
len = j2k_encode(img, cp, cstr, cp->tdx * cp->tdy * cp->tw * cp->th * 10, index);
if (len == 0) {
fprintf(stderr, "failed to encode image\n");
return 1;
}
out= (char *) malloc(len*6*sizeof(char));
len=jpwl_encode(cstr,out,len);
if (len == 0) {
fprintf(stderr, "failed to encode image\n");
return 1;
}
//ricopio la codestream, sono nel buffer out
cio_seek(0);
for(i=0;i<len;i++)
jp2_buffer[set+i]=cio_read(1);
//mi rimetto nel buffer jp2_buffer
cio_init(jp2_buffer, cp->tdx * cp->tdy * cp->tw * cp->th * 10);
//aggiorno la lunghezza della codestream
len += set;
cio_seek(len);
//correggo l'index file e lo scrivo
if (info_IM.index_on){
info_IM.Main_head_end += set;
//printf("fine_mh: %d\n",info_IM.Main_head_end);
//printf("%d\n", info_IM.tile[0].start_pos);
info_IM.tile[0].start_pos += set;
for (i=0; i < cp->th * cp->tw; i++){
info_IM.tile[i].end_header += set;
info_IM.tile[i].end_pos += set;
if (i < cp->tw * cp->th)
info_IM.tile[i+1].start_pos += set;
pack_corr(set, i);
}
}
if (cp->index_on && use_index){
write_index(index, len);
}
free(cstr);
free(out);
}
else{
len = j2k_encode(img, cp, jp2_buffer, cp->tdx * cp->tdy * cp->th * cp->tw * 2, index);
}
box.length = cio_tell() - box.init_pos;
cio_seek(box.init_pos);
cio_write(box.length, 4); /* L */
cio_seek(box.init_pos + box.length);
return box.length;
}
