diff options
Diffstat (limited to 'extern/libopenjpeg/t2.c')
| -rw-r--r-- | extern/libopenjpeg/t2.c | 52 |
1 files changed, 42 insertions, 10 deletions
diff --git a/extern/libopenjpeg/t2.c b/extern/libopenjpeg/t2.c index 232a5437329..2585c3d56a6 100644 --- a/extern/libopenjpeg/t2.c +++ b/extern/libopenjpeg/t2.c @@ -30,6 +30,7 @@ */ #include "opj_includes.h" +#include <assert.h> /** @defgroup T2 T2 - Implementation of a tier-2 coding */ /*@{*/ @@ -64,7 +65,7 @@ static int t2_encode_packet(opj_tcd_tile_t *tile, opj_tcp_t *tcp, opj_pi_iterato @param cblksty @param first */ -static void t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int 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 @@ -296,9 +297,17 @@ static int t2_encode_packet(opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_itera return (c - dest); } -static void t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first) { +static opj_bool t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first) { opj_tcd_seg_t* seg; - cblk->segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, (index + 1) * sizeof(opj_tcd_seg_t)); + opj_tcd_seg_t* segs; + segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, (index + 1) * sizeof(opj_tcd_seg_t)); + + if (segs == NULL) + { + return OPJ_FALSE; + } + cblk->segs = segs; + seg = &cblk->segs[index]; seg->data = NULL; seg->dataindex = 0; @@ -316,6 +325,8 @@ static void t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int fi } else { seg->maxpasses = 109; } + + return OPJ_TRUE; } static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile, @@ -330,13 +341,15 @@ static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_t 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 */ - + + opj_tcd_resolution_t* res; + assert(&tile->comps[compno] != NULL); + res = &tile->comps[compno].resolutions[resno]; + if (layno == 0) { for (bandno = 0; bandno < res->numbands; bandno++) { opj_tcd_band_t *band = &res->bands[bandno]; @@ -462,12 +475,22 @@ static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_t cblk->numlenbits += increment; segno = 0; if (!cblk->numsegs) { - t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 1); + if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 1)) + { + opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n"); + bio_destroy(bio); + return -999; + } } else { segno = cblk->numsegs - 1; if (cblk->segs[segno].numpasses == cblk->segs[segno].maxpasses) { ++segno; - t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0); + if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0)) + { + opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n"); + bio_destroy(bio); + return -999; + } } } n = cblk->numnewpasses; @@ -478,7 +501,12 @@ static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_t n -= cblk->segs[segno].numnewpasses; if (n > 0) { ++segno; - t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0); + if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0)) + { + opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n"); + bio_destroy(bio); + return -999; + } } } while (n > 0); } @@ -714,7 +742,11 @@ int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj } else { e = 0; } - if(e == -999) return -999; + if(e == -999) + { + pi_destroy(pi, cp, tileno); + return -999; + } /* progression in resolution */ image->comps[pi[pino].compno].resno_decoded = (e > 0) ? |