@param first
*/
static opj_bool t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first);
-/**
-Decode a packet of a tile from a source buffer
-@param t2 T2 handle
-@param src Source buffer
-@param len Length of the source buffer
-@param tile Tile for which to write the packets
-@param tcp Tile coding parameters
-@param pi Packet identity
-@param pack_info Packet information
-@return
-*/
-static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile,
- opj_tcp_t *tcp, opj_pi_iterator_t *pi, opj_packet_info_t *pack_info);
-
/**
Decode a packet of a tile from a source buffer
@return FIXME DOC
*/
-static opj_bool t2_decode_packet_v2(
- opj_t2_v2_t* t2,
- opj_tcd_tile_v2_t *tile,
- opj_tcp_v2_t *tcp,
- opj_pi_iterator_t *pi,
- OPJ_BYTE *src,
- OPJ_UINT32 * data_read,
- OPJ_UINT32 max_length,
- opj_packet_info_t *pack_info);
+static opj_bool opj_t2_decode_packet( opj_t2_v2_t* t2,
+ opj_tcd_tile_v2_t *tile,
+ opj_tcp_v2_t *tcp,
+ opj_pi_iterator_t *pi,
+ OPJ_BYTE *src,
+ OPJ_UINT32 * data_read,
+ OPJ_UINT32 max_length,
+ opj_packet_info_t *pack_info);
static opj_bool opj_t2_skip_packet( opj_t2_v2_t* p_t2,
opj_tcd_tile_v2_t *p_tile,
return OPJ_TRUE;
}
-static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile,
- opj_tcp_t *tcp, opj_pi_iterator_t *pi, opj_packet_info_t *pack_info) {
- int bandno, cblkno;
- unsigned char *c = src;
-
- opj_cp_t *cp = t2->cp;
-
- int compno = pi->compno; /* component value */
- int resno = pi->resno; /* resolution level value */
- int precno = pi->precno; /* precinct value */
- int layno = pi->layno; /* quality layer value */
-
- opj_tcd_resolution_t* res = &tile->comps[compno].resolutions[resno];
-
- unsigned char *hd = NULL;
- int present;
-
- opj_bio_t *bio = NULL; /* BIO component */
-
- if (layno == 0) {
- for (bandno = 0; bandno < res->numbands; bandno++) {
- opj_tcd_band_t *band = &res->bands[bandno];
- opj_tcd_precinct_t *prc = &band->precincts[precno];
-
- if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
-
- tgt_reset(prc->incltree);
- tgt_reset(prc->imsbtree);
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
- opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
- cblk->numsegs = 0;
- }
- }
- }
-
- /* SOP markers */
-
- if (tcp->csty & J2K_CP_CSTY_SOP) {
- if ((*c) != 0xff || (*(c + 1) != 0x91)) {
- opj_event_msg(t2->cinfo, EVT_WARNING, "Expected SOP marker\n");
- } else {
- c += 6;
- }
-
- /** TODO : check the Nsop value */
- }
-
- /*
- When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
- This part deal with this caracteristic
- step 1: Read packet header in the saved structure
- step 2: Return to codestream for decoding
- */
-
- bio = bio_create();
-
- if (cp->ppm == 1) { /* PPM */
- hd = cp->ppm_data;
- bio_init_dec(bio, hd, cp->ppm_len);
- } else if (tcp->ppt == 1) { /* PPT */
- hd = tcp->ppt_data;
- bio_init_dec(bio, hd, tcp->ppt_len);
- } else { /* Normal Case */
- hd = c;
- bio_init_dec(bio, hd, src+len-hd);
- }
-
- present = bio_read(bio, 1);
-
- if (!present) {
- bio_inalign(bio);
- hd += bio_numbytes(bio);
- bio_destroy(bio);
-
- /* EPH markers */
-
- if (tcp->csty & J2K_CP_CSTY_EPH) {
- if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {
- printf("Error : expected EPH marker\n");
- } else {
- hd += 2;
- }
- }
-
- /* << INDEX */
- /* End of packet header position. Currently only represents the distance to start of packet
- // Will be updated later by incrementing with packet start value*/
- if(pack_info) {
- pack_info->end_ph_pos = (int)(c - src);
- }
- /* INDEX >> */
-
- if (cp->ppm == 1) { /* PPM case */
- cp->ppm_len += cp->ppm_data-hd;
- cp->ppm_data = hd;
- return (c - src);
- }
- if (tcp->ppt == 1) { /* PPT case */
- tcp->ppt_len+=tcp->ppt_data-hd;
- tcp->ppt_data = hd;
- return (c - src);
- }
-
- return (hd - src);
- }
-
- for (bandno = 0; bandno < res->numbands; bandno++) {
- opj_tcd_band_t *band = &res->bands[bandno];
- opj_tcd_precinct_t *prc = &band->precincts[precno];
-
- if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
-
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
- int included, increment, n, segno;
- opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
- /* if cblk not yet included before --> inclusion tagtree */
- if (!cblk->numsegs) {
- included = tgt_decode(bio, prc->incltree, cblkno, layno + 1);
- /* else one bit */
- } else {
- included = bio_read(bio, 1);
- }
- /* if cblk not included */
- if (!included) {
- cblk->numnewpasses = 0;
- continue;
- }
- /* if cblk not yet included --> zero-bitplane tagtree */
- if (!cblk->numsegs) {
- int i, numimsbs;
- for (i = 0; !tgt_decode(bio, prc->imsbtree, cblkno, i); i++) {
- ;
- }
- numimsbs = i - 1;
- cblk->numbps = band->numbps - numimsbs;
- cblk->numlenbits = 3;
- }
- /* number of coding passes */
- cblk->numnewpasses = opj_t2_getnumpasses(bio);
- increment = opj_t2_getcommacode(bio);
- /* length indicator increment */
- cblk->numlenbits += increment;
- segno = 0;
- if (!cblk->numsegs) {
- if (OPJ_FALSE == t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 1)) {
- /* TODO: LH: shall we destroy bio here ?*/
- opj_event_msg(t2->cinfo, EVT_WARNING, "Not enough memory to init segment #%d\n", segno);
- return -999;
- }
- } else {
- segno = cblk->numsegs - 1;
- if (cblk->segs[segno].numpasses == cblk->segs[segno].maxpasses) {
- ++segno;
- if (OPJ_FALSE == t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0)) {
- /* TODO: LH: shall we destroy bio here ?*/
- opj_event_msg(t2->cinfo, EVT_WARNING, "Not enough memory to init segment #%d\n", segno);
- return -999;
- }
- }
- }
- n = cblk->numnewpasses;
-
- do {
- cblk->segs[segno].numnewpasses = int_min(cblk->segs[segno].maxpasses - cblk->segs[segno].numpasses, n);
- cblk->segs[segno].newlen = bio_read(bio, cblk->numlenbits + int_floorlog2(cblk->segs[segno].numnewpasses));
- n -= cblk->segs[segno].numnewpasses;
- if (n > 0) {
- ++segno;
- if (OPJ_FALSE == t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0)) {
- /* TODO: LH: shall we destroy bio here ? */
- opj_event_msg(t2->cinfo, EVT_WARNING, "Not enough memory to init segment #%d\n", segno);
- return -999;
- }
- }
- } while (n > 0);
- }
- }
-
- if (bio_inalign(bio)) {
- bio_destroy(bio);
- return -999;
- }
-
- hd += bio_numbytes(bio);
- bio_destroy(bio);
-
- /* EPH markers */
- if (tcp->csty & J2K_CP_CSTY_EPH) {
- if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {
- opj_event_msg(t2->cinfo, EVT_ERROR, "Expected EPH marker\n");
- return -999;
- } else {
- hd += 2;
- }
- }
-
- /* << INDEX */
- /* End of packet header position. Currently only represents the distance to start of packet
- // Will be updated later by incrementing with packet start value*/
- if(pack_info) {
- pack_info->end_ph_pos = (int)(hd - src);
- }
- /* INDEX >> */
-
- if (cp->ppm==1) {
- cp->ppm_len+=cp->ppm_data-hd;
- cp->ppm_data = hd;
- } else if (tcp->ppt == 1) {
- tcp->ppt_len+=tcp->ppt_data-hd;
- tcp->ppt_data = hd;
- } else {
- c=hd;
- }
-
- for (bandno = 0; bandno < res->numbands; bandno++) {
- opj_tcd_band_t *band = &res->bands[bandno];
- opj_tcd_precinct_t *prc = &band->precincts[precno];
-
- if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
-
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
- opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
- opj_tcd_seg_t *seg = NULL;
- if (!cblk->numnewpasses)
- continue;
- if (!cblk->numsegs) {
- seg = &cblk->segs[0];
- cblk->numsegs++;
- cblk->len = 0;
- } else {
- seg = &cblk->segs[cblk->numsegs - 1];
- if (seg->numpasses == seg->maxpasses) {
- seg++;
- cblk->numsegs++;
- }
- }
-
- do {
- unsigned char * new_data;
- if (c + seg->newlen > src + len) {
- return -999;
- }
-
-#ifdef USE_JPWL
- /* we need here a j2k handle to verify if making a check to
- the validity of cblocks parameters is selected from user (-W) */
-
- /* let's check that we are not exceeding */
- if ((cblk->len + seg->newlen) > 8192) {
- opj_event_msg(t2->cinfo, EVT_WARNING,
- "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
- seg->newlen, cblkno, precno, bandno, resno, compno);
- if (!JPWL_ASSUME) {
- opj_event_msg(t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
- return -999;
- }
- seg->newlen = 8192 - cblk->len;
- opj_event_msg(t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", seg->newlen);
- break;
- };
-
-#endif /* USE_JPWL */
-
- new_data = (unsigned char*) opj_realloc(cblk->data, (cblk->len + seg->newlen) * sizeof(unsigned char));
- if (! new_data) {
- opj_event_msg(t2->cinfo, EVT_ERROR, "JPWL: Not enough memory for codeblock data %d (p=%d, b=%d, r=%d, c=%d)\n",
- seg->newlen, cblkno, precno, bandno, resno, compno);
- cblk->data = 0;
- cblk->len = 0; /* TODO: LH: other things to reset ?*/
- opj_free(cblk->data);
- return -999;
- }
- cblk->data = new_data;
- memcpy(cblk->data + cblk->len, c, seg->newlen);
- if (seg->numpasses == 0) {
- seg->data = &cblk->data;
- seg->dataindex = cblk->len;
- }
- c += seg->newlen;
- cblk->len += seg->newlen;
- seg->len += seg->newlen;
- seg->numpasses += seg->numnewpasses;
- cblk->numnewpasses -= seg->numnewpasses;
- if (cblk->numnewpasses > 0) {
- seg++;
- cblk->numsegs++;
- }
- } while (cblk->numnewpasses > 0);
- }
- }
-
- return (c - src);
-}
/* ----------------------------------------------------------------------- */
return OPJ_TRUE;
}
-
-int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj_tcd_tile_t *tile, opj_codestream_info_t *cstr_info) {
- unsigned char *c = src;
- opj_pi_iterator_t *pi;
- int pino, e = 0;
- int n = 0, curtp = 0;
- int tp_start_packno;
-
- opj_image_t *image = t2->image;
- opj_cp_t *cp = t2->cp;
-
- /* create a packet iterator */
- pi = pi_create_decode(image, cp, tileno);
- if(!pi) {
- /* TODO: throw an error */
- return -999;
- }
-
- tp_start_packno = 0;
-
- for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) {
- while (pi_next(&pi[pino])) {
- if ((cp->layer==0) || (cp->layer>=((pi[pino].layno)+1))) {
- opj_packet_info_t *pack_info;
- if (cstr_info)
- pack_info = &cstr_info->tile[tileno].packet[cstr_info->packno];
- else
- pack_info = NULL;
- e = t2_decode_packet(t2, c, src + len - c, tile, &cp->tcps[tileno], &pi[pino], pack_info);
- } else {
- e = 0;
- }
- if(e == -999) return -999;
- /* progression in resolution */
- image->comps[pi[pino].compno].resno_decoded =
- (e > 0) ?
- int_max(pi[pino].resno, image->comps[pi[pino].compno].resno_decoded)
- : image->comps[pi[pino].compno].resno_decoded;
- n++;
-
- /* INDEX >> */
- if(cstr_info) {
- opj_tile_info_t *info_TL = &cstr_info->tile[tileno];
- opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
- if (!cstr_info->packno) {
- info_PK->start_pos = info_TL->end_header + 1;
- } else if (info_TL->packet[cstr_info->packno-1].end_pos >= (int)cstr_info->tile[tileno].tp[curtp].tp_end_pos){ /* New tile part*/
- info_TL->tp[curtp].tp_numpacks = cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part*/
- info_TL->tp[curtp].tp_start_pack = tp_start_packno;
- tp_start_packno = cstr_info->packno;
- curtp++;
- info_PK->start_pos = cstr_info->tile[tileno].tp[curtp].tp_end_header+1;
- } else {
- info_PK->start_pos = (cp->tp_on && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
- }
- info_PK->end_pos = info_PK->start_pos + e - 1;
- info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance
- // to start of packet is incremented by value of start of packet*/
- cstr_info->packno++;
- }
- /* << INDEX */
-
- if (e == -999) { /* ADD */
- break;
- } else {
- c += e;
- }
- }
- }
- /* INDEX >> */
- if(cstr_info) {
- cstr_info->tile[tileno].tp[curtp].tp_numpacks = cstr_info->packno - tp_start_packno; /* Number of packets in last tile-part*/
- cstr_info->tile[tileno].tp[curtp].tp_start_pack = tp_start_packno;
- }
- /* << INDEX */
-
- /* don't forget to release pi */
- pi_destroy(pi, cp, tileno);
-
- if (e == -999) {
- return e;
- }
-
- return (c - src);
-}
-
-opj_bool t2_decode_packets_v2(
- opj_t2_v2_t *p_t2,
- OPJ_UINT32 p_tile_no,
- struct opj_tcd_tile_v2 *p_tile,
- OPJ_BYTE *p_src,
- OPJ_UINT32 * p_data_read,
- OPJ_UINT32 p_max_len,
- opj_codestream_index_t *p_cstr_index)
+opj_bool opj_t2_decode_packets( opj_t2_v2_t *p_t2,
+ OPJ_UINT32 p_tile_no,
+ opj_tcd_tile_v2_t *p_tile,
+ OPJ_BYTE *p_src,
+ OPJ_UINT32 * p_data_read,
+ OPJ_UINT32 p_max_len,
+ opj_codestream_index_t *p_cstr_index)
{
OPJ_BYTE *l_current_data = p_src;
opj_pi_iterator_t *l_pi = 00;
first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
- if (! t2_decode_packet_v2(p_t2,p_tile,l_tcp,l_current_pi,l_current_data,&l_nb_bytes_read,p_max_len,l_pack_info)) {
+ if (! opj_t2_decode_packet(p_t2,p_tile,l_tcp,l_current_pi,l_current_data,&l_nb_bytes_read,p_max_len,l_pack_info)) {
pi_destroy_v2(l_pi,l_nb_pocs);
return OPJ_FALSE;
}
return l_t2;
}
-void t2_destroy(opj_t2_t *t2) {
+void opj_t2_destroy(opj_t2_v2_t *t2) {
if(t2) {
opj_free(t2);
}
}
-void t2_destroy_v2(opj_t2_v2_t *t2) {
- if(t2) {
- opj_free(t2);
- }
-}
-
-
-static opj_bool t2_decode_packet_v2(
- opj_t2_v2_t* p_t2,
- opj_tcd_tile_v2_t *p_tile,
- opj_tcp_v2_t *p_tcp,
- opj_pi_iterator_t *p_pi,
- OPJ_BYTE *p_src,
- OPJ_UINT32 * p_data_read,
- OPJ_UINT32 p_max_length,
- opj_packet_info_t *p_pack_info)
+opj_bool opj_t2_decode_packet( opj_t2_v2_t* p_t2,
+ opj_tcd_tile_v2_t *p_tile,
+ opj_tcp_v2_t *p_tcp,
+ opj_pi_iterator_t *p_pi,
+ OPJ_BYTE *p_src,
+ OPJ_UINT32 * p_data_read,
+ OPJ_UINT32 p_max_length,
+ opj_packet_info_t *p_pack_info)
{
opj_bool l_read_data;
OPJ_UINT32 l_nb_bytes_read = 0;
projects / openjpeg / commitdiff