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Backport of upstream commit:
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From dee11ec440d7908d1daf69f40a3324b27cf213ba Mon Sep 17 00:00:00 2001
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From: Michael Adams <mdadams@ece.uvic.ca>
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Date: Mon, 24 Oct 2016 07:26:40 -0700
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Subject: [PATCH] The component domains must be the same for the ICT/RCT in the
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JPC codec. This was previously enforced with an assertion. Now, it is handled
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in a more graceful manner.
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diff -pruN jasper-1.900.1.orig/src/libjasper/jpc/jpc_dec.c jasper-1.900.1/src/libjasper/jpc/jpc_dec.c
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--- jasper-1.900.1.orig/src/libjasper/jpc/jpc_dec.c 2017-03-31 22:20:39.000000000 +0200
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+++ jasper-1.900.1/src/libjasper/jpc/jpc_dec.c 2017-03-31 22:48:55.368931732 +0200
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@@ -1014,6 +1014,24 @@ if (!prc->cblks) {
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return 0;
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}
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+static int jas_image_cmpt_domains_same(jas_image_t *image)
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+{
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+ int cmptno;
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+ jas_image_cmpt_t *cmpt;
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+ jas_image_cmpt_t *cmpt0;
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+
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+ cmpt0 = image->cmpts_[0];
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+ for (cmptno = 1; cmptno < image->numcmpts_; ++cmptno) {
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+ cmpt = image->cmpts_[cmptno];
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+ if (cmpt->tlx_ != cmpt0->tlx_ || cmpt->tly_ != cmpt0->tly_ ||
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+ cmpt->hstep_ != cmpt0->hstep_ || cmpt->vstep_ != cmpt0->vstep_ ||
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+ cmpt->width_ != cmpt0->width_ || cmpt->height_ != cmpt0->height_) {
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+ return 0;
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+ }
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+ }
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+ return 1;
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+}
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+
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static int jpc_dec_tiledecode(jpc_dec_t *dec, jpc_dec_tile_t *tile)
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{
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int i;
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@@ -1074,6 +1092,10 @@ static int jpc_dec_tiledecode(jpc_dec_t
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jas_eprintf("RCT requires at least three components\n");
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return -1;
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}
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+ if (!jas_image_cmpt_domains_same(dec->image)) {
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+ jas_eprintf("RCT requires all components have the same domain\n");
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+ return -1;
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+ }
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jpc_irct(tile->tcomps[0].data, tile->tcomps[1].data,
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tile->tcomps[2].data);
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break;
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@@ -1082,6 +1104,10 @@ static int jpc_dec_tiledecode(jpc_dec_t
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jas_eprintf("ICT requires at least three components\n");
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return -1;
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}
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+ if (!jas_image_cmpt_domains_same(dec->image)) {
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+ jas_eprintf("RCT requires all components have the same domain\n");
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+ return -1;
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+ }
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jpc_iict(tile->tcomps[0].data, tile->tcomps[1].data,
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tile->tcomps[2].data);
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break;
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