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Added feature for generation of tile parts. Modifications in image_to_j2k.c, openjpeg.c, j2k.c, pi.c

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Added function j2k_write_tlm(),to generate TLM marker for a Digital cinema compliant codestream. Modifications in j2k.c.
This commit is contained in:
Parvatha Elangovan
2007-03-20 17:15:18 +00:00
parent 8bc6da2ffa
commit 694a173adb
15 changed files with 853 additions and 106 deletions
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72
libopenjpeg/t2.c
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@@ -562,59 +562,59 @@ static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_t
/* ----------------------------------------------------------------------- */
int t2_encode_packets(opj_t2_t* t2, int tileno, opj_tcd_tile_t *tile, int maxlayers, unsigned char *dest, int len, opj_image_info_t *image_info) {
int t2_encode_packets(opj_t2_t* t2,int tileno, opj_tcd_tile_t *tile, int maxlayers, unsigned char *dest, int len, opj_image_info_t *image_info,opj_pi_iterator_t *tcd_pi,int tpnum, int tppos,int pino, char final_encoding){
unsigned char *c = dest;
int e = 0;
opj_pi_iterator_t *pi = NULL;
int pino;
opj_image_t *image = t2->image;
opj_cp_t *cp = t2->cp;
/* create a packet iterator */
pi = pi_create(image, cp, tileno);
if(final_encoding == 0){
pi = pi_initialise_encode(image, cp, tileno,pino);
}else{
pi = tcd_pi;
}
if(!pi) {
/* TODO: throw an error */
return -999;
}
pi_create_encode(pi, cp,tileno,pino,tpnum,tppos,final_encoding);
if(image_info) {
image_info->num = 0;
}
for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) {
while (pi_next(&pi[pino])) {
if (pi[pino].layno < maxlayers) {
e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[pino], c, dest + len - c, image_info, tileno);
if (e == -999) {
break;
} else {
c += e;
}
/* INDEX >> */
if(image_info && image_info->index_on) {
if(image_info->index_write) {
opj_tile_info_t *info_TL = &image_info->tile[tileno];
opj_packet_info_t *info_PK = &info_TL->packet[image_info->num];
if (!image_info->num) {
info_PK->start_pos = info_TL->end_header + 1;
} else {
info_PK->start_pos = info_TL->packet[image_info->num - 1].end_pos + 1;
}
info_PK->end_pos = info_PK->start_pos + e - 1;
}
image_info->num++;
}
/* << INDEX */
while (pi_next(&pi[pino])) {
if (pi[pino].layno < maxlayers) {
e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[pino], c, dest + len - c, image_info, tileno);
if (e == -999) {
break;
} else {
c += e;
}
/* INDEX >> */
if(image_info && image_info->index_on) {
if(image_info->index_write) {
opj_tile_info_t *info_TL = &image_info->tile[tileno];
opj_packet_info_t *info_PK = &info_TL->packet[image_info->num];
if (!image_info->num) {
info_PK->start_pos = info_TL->end_header + 1;
} else {
info_PK->start_pos = info_TL->packet[image_info->num - 1].end_pos + 1;
}
info_PK->end_pos = info_PK->start_pos + e - 1;
}
image_info->num++;
}
/* << INDEX */
}
}
/* don't forget to release pi */
pi_destroy(pi, cp, tileno);
if(final_encoding == 0){
pi_destroy(pi, cp, tileno);
}
if (e == -999) {
return e;
}
@@ -632,7 +632,7 @@ int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj
opj_cp_t *cp = t2->cp;
/* create a packet iterator */
pi = pi_create(image, cp, tileno);
pi = pi_create_decode(image, cp, tileno);
if(!pi) {
/* TODO: throw an error */
return -999;