This commit was manufactured by cvs2svn to create tag 'start'.start

1 files changed, 505 insertions, 0 deletions

diff --git a/libopenjpeg/t2.c b/libopenjpeg/t2.c
new file mode 100644
index 00000000..9bd3a2b0
--- /dev/null
+++ b/libopenjpeg/t2.c
@@ -0,0 +1,505 @@
+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2002-2003,  Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "t2.h"
+#include "tcd.h"
+#include "bio.h"
+#include "j2k.h"
+#include "pi.h"
+#include "tgt.h"
+#include "int.h"
+#include "cio.h"
+#include <stdio.h>
+#include <setjmp.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define RESTART 0x04
+
+extern jmp_buf j2k_error;
+
+void t2_putcommacode(int n)
+{
+	while (--n >= 0) {
+		bio_write(1, 1);
+	}
+	bio_write(0, 1);
+}
+
+int t2_getcommacode()
+{
+	int n;
+	for (n = 0; bio_read(1); n++) {
+	}
+	return n;
+}
+
+/* <summary> */
+/* Variable length code for signalling delta Zil (truncation point) */
+/* <val> n : delta Zil */
+/* <\summary> */
+void t2_putnumpasses(int n)
+{
+	if (n == 1) {
+		bio_write(0, 1);
+	} else if (n == 2) {
+		bio_write(2, 2);
+	} else if (n <= 5) {
+		bio_write(0xc | (n - 3), 4);
+	} else if (n <= 36) {
+		bio_write(0x1e0 | (n - 6), 9);
+	} else if (n <= 164) {
+		bio_write(0xff80 | (n - 37), 16);
+	}
+}
+
+int t2_getnumpasses()
+{
+	int n;
+	if (!bio_read(1))
+		return 1;
+	if (!bio_read(1))
+		return 2;
+	if ((n = bio_read(2)) != 3)
+		return 3 + n;
+	if ((n = bio_read(5)) != 31)
+		return 6 + n;
+	return 37 + bio_read(7);
+}
+
+int t2_encode_packet(tcd_tile_t * tile, j2k_tcp_t * tcp, int compno,
+										 int resno, int precno, int layno, unsigned char *dest,
+										 int len, info_image * info_IM, int tileno)
+{
+	int bandno, cblkno;
+	unsigned char *sop = 0, *eph = 0;
+	tcd_tilecomp_t *tilec = &tile->comps[compno];
+	tcd_resolution_t *res = &tilec->resolutions[resno];
+	unsigned char *c = dest;
+
+	/* int PPT=tile->PPT, ppt_len=0; */
+	/* FILE *PPT_file; */
+
+	/* <SOP 0xff91> */
+	if (tcp->csty & J2K_CP_CSTY_SOP) {
+		sop = (unsigned char *) malloc(6 * sizeof(unsigned char));
+		sop[0] = 255;
+		sop[1] = 145;
+		sop[2] = 0;
+		sop[3] = 4;
+		sop[4] = (info_IM->num % 65536) / 256;
+		sop[5] = (info_IM->num % 65536) % 256;
+		memcpy(c, sop, 6);
+		free(sop);
+		c += 6;
+	}
+	/* </SOP> */
+
+	if (!layno) {
+		for (bandno = 0; bandno < res->numbands; bandno++) {
+			tcd_band_t *band = &res->bands[bandno];
+			tcd_precinct_t *prc = &band->precincts[precno];
+			tgt_reset(prc->incltree);
+			tgt_reset(prc->imsbtree);
+			for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+				tcd_cblk_t *cblk = &prc->cblks[cblkno];
+				cblk->numpasses = 0;
+				tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps);
+			}
+		}
+	}
+
+	bio_init_enc(c, len);
+	bio_write(1, 1);							/* Empty header bit */
+
+	/* Writing Packet header */
+	for (bandno = 0; bandno < res->numbands; bandno++) {
+		tcd_band_t *band = &res->bands[bandno];
+		tcd_precinct_t *prc = &band->precincts[precno];
+		for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+			tcd_cblk_t *cblk = &prc->cblks[cblkno];
+			tcd_layer_t *layer = &cblk->layers[layno];
+			if (!cblk->numpasses && layer->numpasses) {
+				tgt_setvalue(prc->incltree, cblkno, layno);
+			}
+		}
+		for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+			tcd_cblk_t *cblk = &prc->cblks[cblkno];
+			tcd_layer_t *layer = &cblk->layers[layno];
+			int increment = 0;
+			int nump = 0;
+			int len = 0, passno;
+			/* cblk inclusion bits */
+			if (!cblk->numpasses) {
+				tgt_encode(prc->incltree, cblkno, layno + 1);
+			} else {
+				bio_write(layer->numpasses != 0, 1);
+			}
+			/* if cblk not included, go to the next cblk  */
+			if (!layer->numpasses) {
+				continue;
+			}
+			/* if first instance of cblk --> zero bit-planes information */
+			if (!cblk->numpasses) {
+				cblk->numlenbits = 3;
+				tgt_encode(prc->imsbtree, cblkno, 999);
+			}
+			/* number of coding passes included */
+			t2_putnumpasses(layer->numpasses);
+
+			/* computation of the increase of the length indicator and insertion in the header     */
+			for (passno = cblk->numpasses;
+					 passno < cblk->numpasses + layer->numpasses; passno++) {
+				tcd_pass_t *pass = &cblk->passes[passno];
+				nump++;
+				len += pass->len;
+				if (pass->term
+						|| passno == (cblk->numpasses + layer->numpasses) - 1) {
+					increment =
+						int_max(increment,
+										int_floorlog2(len) + 1 - (cblk->numlenbits +
+																							int_floorlog2(nump)));
+					len = 0;
+					nump = 0;
+				}
+			}
+			t2_putcommacode(increment);
+			/* computation of the new Length indicator */
+			cblk->numlenbits += increment;
+			/* insertion of the codeword segment length */
+
+			for (passno = cblk->numpasses;
+					 passno < cblk->numpasses + layer->numpasses; passno++) {
+				tcd_pass_t *pass = &cblk->passes[passno];
+				nump++;
+				len += pass->len;
+				if (pass->term
+						|| passno == (cblk->numpasses + layer->numpasses) - 1) {
+					bio_write(len, cblk->numlenbits + int_floorlog2(nump));
+					len = 0;
+					nump = 0;
+				}
+			}
+		}
+	}
+
+	if (bio_flush())
+		return -999;								/* modified to eliminate longjmp !! */
+
+	c += bio_numbytes();
+
+	/* <EPH 0xff92> */
+	if (tcp->csty & J2K_CP_CSTY_EPH) {
+		eph = (unsigned char *) malloc(2 * sizeof(unsigned char));
+		eph[0] = 255;
+		eph[1] = 146;
+		memcpy(c, eph, 2);
+		free(eph);
+		c += 2;
+	}
+	/* </EPH> */
+	/*   } */
+	/* Writing the packet body */
+
+	for (bandno = 0; bandno < res->numbands; bandno++) {
+		tcd_band_t *band = &res->bands[bandno];
+		tcd_precinct_t *prc = &band->precincts[precno];
+		for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+			tcd_cblk_t *cblk = &prc->cblks[cblkno];
+			tcd_layer_t *layer = &cblk->layers[layno];
+			if (!layer->numpasses) {	/* ADD for index Cfr. Marcela --> delta disto by packet */
+				if (info_IM->index_write && info_IM->index_on) {
+					info_tile *info_TL = &info_IM->tile[tileno];
+					info_packet *info_PK = &info_TL->packet[info_IM->num];
+					info_PK->disto = layer->disto;
+					if (info_IM->D_max < info_PK->disto)
+						info_IM->D_max = info_PK->disto;
+				}												/* </ADD> */
+				continue;
+			}
+			if (c + layer->len > dest + len) {
+				return -999;
+			}
+
+			memcpy(c, layer->data, layer->len);
+			cblk->numpasses += layer->numpasses;
+			c += layer->len;
+			/* ADD for index Cfr. Marcela --> delta disto by packet */
+			if (info_IM->index_write && info_IM->index_on) {
+				info_tile *info_TL = &info_IM->tile[tileno];
+				info_packet *info_PK = &info_TL->packet[info_IM->num];
+				info_PK->disto = layer->disto;
+				if (info_IM->D_max < info_PK->disto)
+					info_IM->D_max = info_PK->disto;
+			}													/* </ADD> */
+		}
+	}
+	return c - dest;
+}
+
+void t2_init_seg(tcd_seg_t * seg, int cblksty, int first)
+{
+	seg->numpasses = 0;
+	seg->len = 0;
+	if (cblksty & J2K_CCP_CBLKSTY_TERMALL)
+		seg->maxpasses = 1;
+	else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
+		if (first)
+			seg->maxpasses = 10;
+		else
+			seg->maxpasses = (((seg - 1)->maxpasses == 1)
+												|| ((seg - 1)->maxpasses == 10)) ? 2 : 1;
+	} else
+		seg->maxpasses = 109;
+}
+
+int t2_decode_packet(unsigned char *src, int len, tcd_tile_t * tile,
+										 j2k_tcp_t * tcp, int compno, int resno, int precno,
+										 int layno)
+{
+	int bandno, cblkno;
+	tcd_tilecomp_t *tilec = &tile->comps[compno];
+	tcd_resolution_t *res = &tilec->resolutions[resno];
+	unsigned char *c = src;
+	int present;
+
+	if (layno == 0) {
+		for (bandno = 0; bandno < res->numbands; bandno++) {
+			tcd_band_t *band = &res->bands[bandno];
+			tcd_precinct_t *prc = &band->precincts[precno];
+			tgt_reset(prc->incltree);
+			tgt_reset(prc->imsbtree);
+			for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+				tcd_cblk_t *cblk = &prc->cblks[cblkno];
+				cblk->numsegs = 0;
+			}
+		}
+	}
+
+	if (tcp->csty & J2K_CP_CSTY_SOP) {
+		c += 6;
+	}
+	bio_init_dec(c, src + len - c);
+	present = bio_read(1);
+	if (!present) {
+		bio_inalign();
+		c += bio_numbytes();
+		return c - src;
+	}
+	for (bandno = 0; bandno < res->numbands; bandno++) {
+		tcd_band_t *band = &res->bands[bandno];
+		tcd_precinct_t *prc = &band->precincts[precno];
+		for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+			int included, increment, n;
+			tcd_cblk_t *cblk = &prc->cblks[cblkno];
+			tcd_seg_t *seg;
+			/* if cblk not yet included before --> inclusion tagtree */
+			if (!cblk->numsegs) {
+				included = tgt_decode(prc->incltree, cblkno, layno + 1);
+				/* else one bit */
+			} else {
+				included = bio_read(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(prc->imsbtree, cblkno, i); i++) {
+				}
+				numimsbs = i - 1;
+				cblk->numbps = band->numbps - numimsbs;
+				cblk->numlenbits = 3;
+			}
+			/* number of coding passes */
+			cblk->numnewpasses = t2_getnumpasses();
+			increment = t2_getcommacode();
+			/* length indicator increment */
+			cblk->numlenbits += increment;
+			if (!cblk->numsegs) {
+				seg = &cblk->segs[0];
+				t2_init_seg(seg, tcp->tccps[compno].cblksty, 1);
+			} else {
+				seg = &cblk->segs[cblk->numsegs - 1];
+				if (seg->numpasses == seg->maxpasses) {
+					t2_init_seg(++seg, tcp->tccps[compno].cblksty, 0);
+				}
+			}
+			n = cblk->numnewpasses;
+
+			do {
+				seg->numnewpasses = int_min(seg->maxpasses - seg->numpasses, n);
+				seg->newlen =
+					bio_read(cblk->numlenbits + int_floorlog2(seg->numnewpasses));
+				n -= seg->numnewpasses;
+				if (n > 0) {
+					t2_init_seg(++seg, tcp->tccps[compno].cblksty, 0);
+				}
+			} while (n > 0);
+		}
+	}
+	if (bio_inalign())
+		return -999;
+	c += bio_numbytes();
+	if (tcp->csty & J2K_CP_CSTY_EPH) {
+		c += 2;
+	}
+	for (bandno = 0; bandno < res->numbands; bandno++) {
+		tcd_band_t *band = &res->bands[bandno];
+		tcd_precinct_t *prc = &band->precincts[precno];
+		for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
+			tcd_cblk_t *cblk = &prc->cblks[cblkno];
+			tcd_seg_t *seg;
+			if (!cblk->numnewpasses)
+				continue;
+			if (!cblk->numsegs) {
+				seg = &cblk->segs[cblk->numsegs++];
+				cblk->len = 0;
+			} else {
+				seg = &cblk->segs[cblk->numsegs - 1];
+				if (seg->numpasses == seg->maxpasses) {
+					seg++;
+					cblk->numsegs++;
+				}
+			}
+			do {
+				if (c + seg->newlen > src + len)
+					return -999;
+				memcpy(cblk->data + cblk->len, c, seg->newlen);
+				if (seg->numpasses == 0) {
+					seg->data = cblk->data + 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;
+}
+
+int t2_encode_packets(j2k_image_t * img, j2k_cp_t * cp, int tileno,
+											tcd_tile_t * tile, int maxlayers,
+											unsigned char *dest, int len, info_image * info_IM)
+{
+	unsigned char *c = dest;
+	int e = 0;
+	pi_iterator_t *pi;
+	int pino, compno;
+
+	pi = pi_create(img, cp, tileno);
+
+	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].compno,
+													 pi[pino].resno, pi[pino].precno, pi[pino].layno,
+													 c, dest + len - c, info_IM, tileno);
+				if (e == -999) {
+					break;
+				} else
+					c += e;
+				/* INDEX >> */
+				if (info_IM->index_write && info_IM->index_on) {
+					info_tile *info_TL = &info_IM->tile[tileno];
+					info_packet *info_PK = &info_TL->packet[info_IM->num];
+					if (!info_IM->num) {
+						info_PK->start_pos = info_TL->end_header + 1;
+					} else {
+						info_PK->start_pos =
+							info_TL->packet[info_IM->num - 1].end_pos + 1;
+					}
+					info_PK->end_pos = info_PK->start_pos + e - 1;
+
+				}
+				/* << INDEX */
+				if ((info_IM->index_write
+						 && cp->tcps[tileno].csty & J2K_CP_CSTY_SOP)
+						|| (info_IM->index_write && info_IM->index_on)) {
+					info_IM->num++;
+				}
+			}
+
+		}
+
+		/* FREE space memory taken by pi */
+		for (compno = 0; compno < pi[pino].numcomps; compno++) {
+			free(pi[pino].comps[compno].resolutions);
+		}
+		free(pi[pino].comps);
+	}
+	free(pi);
+	if (e == -999)
+		return e;
+	else
+		return c - dest;
+}
+
+int t2_decode_packets(unsigned char *src, int len, j2k_image_t * img,
+											j2k_cp_t * cp, int tileno, tcd_tile_t * tile)
+{
+	unsigned char *c = src;
+	pi_iterator_t *pi;
+	int pino, compno, e = 0;
+
+	pi = pi_create(img, cp, tileno);
+
+	for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) {
+		while (pi_next(&pi[pino])) {
+			e =
+				t2_decode_packet(c, src + len - c, tile, &cp->tcps[tileno],
+												 pi[pino].compno, pi[pino].resno, pi[pino].precno,
+												 pi[pino].layno);
+			if (e == -999) {					/* ADD */
+				break;
+			} else
+				c += e;
+		}
+		/* FREE space memory taken by pi */
+		for (compno = 0; compno < pi[pino].numcomps; compno++) {
+			free(pi[pino].comps[compno].resolutions);
+		}
+		free(pi[pino].comps);
+	}
+	free(pi);
+	if (e == -999)
+		return e;
+	else
+		return c - src;
+}