From 9751aa1264b9cff20b729bbe825c6ff25ff47a12 Mon Sep 17 00:00:00 2001 From: Yaowu Xu Date: Tue, 7 Oct 2014 11:22:09 -0700 Subject: Add range checking for decoded coefficients. The coefficient range checking is enabled when configured with --enable-debug --enable-coefficient-range-checking for vpxdec to detect ill-formed input stream. This addresses the problem raised by issue #792. Change-Id: I3f9ea541de4dc742dd64389d6c5f543fb1c4f052 --- vp9/decoder/vp9_detokenize.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'vp9') diff --git a/vp9/decoder/vp9_detokenize.c b/vp9/decoder/vp9_detokenize.c index 577874882..421229a28 100644 --- a/vp9/decoder/vp9_detokenize.c +++ b/vp9/decoder/vp9_detokenize.c @@ -190,7 +190,11 @@ static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type, } } v = (val * dqv) >> dq_shift; +#if CONFIG_COEFFICIENT_RANGE_CHECKING + dqcoeff[scan[c]] = check_range(vp9_read_bit(r) ? -v : v); +#else dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v; +#endif token_cache[scan[c]] = vp9_pt_energy_class[token]; ++c; ctx = get_coef_context(nb, token_cache, c); -- cgit v1.2.3