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Backport PR #20597 on branch v3.4.x #20643

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Merged
merged 1 commit into from
Jul 13, 2021
Merged

Backport PR #20597 on branch v3.4.x #20643

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25 changes: 16 additions & 9 deletions extern/ttconv/pprdrv_tt.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -841,17 +841,24 @@ void ttfont_sfnts(TTStreamWriter& stream, struct TTFONT *font)

/* Now, generate those silly numTables numbers. */
sfnts_pputUSHORT(stream, count); /* number of tables */
if ( count == 9 )
{
sfnts_pputUSHORT(stream, 7); /* searchRange */
sfnts_pputUSHORT(stream, 3); /* entrySelector */
sfnts_pputUSHORT(stream, 81); /* rangeShift */

int search_range = 1;
int entry_sel = 0;

while (search_range <= count) {
search_range <<= 1;
entry_sel++;
}
entry_sel = entry_sel > 0 ? entry_sel - 1 : 0;
search_range = (search_range >> 1) * 16;
int range_shift = count * 16 - search_range;

sfnts_pputUSHORT(stream, search_range); /* searchRange */
sfnts_pputUSHORT(stream, entry_sel); /* entrySelector */
sfnts_pputUSHORT(stream, range_shift); /* rangeShift */

#ifdef DEBUG_TRUETYPE
else
{
debug("only %d tables selected",count);
}
debug("only %d tables selected",count);
#endif

/* Now, emmit the table directory. */
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