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* src/truetype/ttpload.c (tt_face_load_hdmx): Added comments.

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This commit is contained in:
Alexei Podtelezhnikov 2021-11-26 09:15:46 -05:00
parent 32f13c11a4
commit 36a905e174
1 changed files with 8 additions and 5 deletions
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13
src/truetype/ttpload.c
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@ -555,7 +555,7 @@
if ( record_size >= 0xFFFF0000UL )
record_size &= 0xFFFFU;
FT_TRACE2(( "Hdmx ", num_records, record_size ));
FT_TRACE2(( "Hdmx " ));
/* The limit for `num_records' is a heuristic value. */
if ( num_records > 255 || num_records == 0 )
@ -564,18 +564,21 @@
goto Fail;
}
/* Out-of-spec tables are rejected. */
if ( (FT_Long)record_size != ( ( face->root.num_glyphs + 5 ) & ~3 ) )
/* Out-of-spec tables are rejected. The record size must be */
/* equal to the number of glyphs + 2 + 32-bit padding. */
if ( (FT_Long)record_size != ( ( face->root.num_glyphs + 2 + 3 ) & ~3 ) )
{
FT_TRACE2(( "with record size off by %ld bytes rejected\n",
(FT_Long)record_size -
( ( face->root.num_glyphs + 5 ) & ~3 ) ));
(FT_Long)record_size -
( ( face->root.num_glyphs + 2 + 3 ) & ~3 ) ));
goto Fail;
}
if ( FT_QNEW_ARRAY( face->hdmx_record_sizes, num_records ) )
goto Fail;
/* XXX: We do not check if the records are sorted by ppem */
/* and cannot use binary search later. */
for ( nn = 0; nn < num_records; nn++ )
{
if ( p + record_size > limit )