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qdm2: avoid integer overflow
author
Vittorio Giovara
<vittorio.giovara@gmail.com>
Wed, 12 Nov 2014 18:10:44 +0000
(19:10 +0100)
committer
Luca Barbato
<lu_zero@gentoo.org>
Mon, 12 Jan 2015 23:16:40 +0000
(
00:16
+0100)
CC: libav-stable@libav.org
Bug-Id: CID 700555
(cherry picked from commit
1f80742f49a9a4e846c9f099387881abc87150b2
)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
libavcodec/qdm2.c
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diff --git
a/libavcodec/qdm2.c
b/libavcodec/qdm2.c
index
94bda91
..
4718b34
100644
(file)
--- a/
libavcodec/qdm2.c
+++ b/
libavcodec/qdm2.c
@@
-730,7
+730,7
@@
static void fill_coding_method_array(sb_int8_array tone_level_idx,
for (j = 0; j < 64; j++)
acc += tone_level_idx_temp[ch][sb][j];
- multres = 0x66666667 * (acc * 10);
+ multres = 0x66666667
LL
* (acc * 10);
esp_40 = (multres >> 32) / 8 + ((multres & 0xffffffff) >> 31);
for (ch = 0; ch < nb_channels; ch++)
for (sb = 0; sb < 30; sb++)