virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avcodec/aacps: fix number of bands used with ipd/opd

Browse Source 
Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f861d16355f_1664_File1_fixed.aac
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-02 17:46:21 +01:00
parent 4843227b2c
commit 6433b393ba
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
libavcodec/aacps.c
View File

@ -432,6 +432,7 @@ static void hybrid_synthesis(PSDSPContext *dsp, float out[2][38][64],
#define DECAY_SLOPE 0.05f
/// Number of frequency bands that can be addressed by the parameter index, b(k)
static const int NR_PAR_BANDS[] = { 20, 34 };
static const int NR_IPDOPD_BANDS[] = { 11, 17 };
/// Number of frequency bands that can be addressed by the sub subband index, k
static const int NR_BANDS[] = { 71, 91 };
/// Start frequency band for the all-pass filter decay slope
@ -828,7 +829,7 @@ static void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2
h21 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][2];
h22 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][3];
if (!PS_BASELINE && ps->enable_ipdopd && 2*b <= NR_PAR_BANDS[is34]) {
if (!PS_BASELINE && ps->enable_ipdopd && b < NR_IPDOPD_BANDS[is34]) {
//The spec say says to only run this smoother when enable_ipdopd
//is set but the reference decoder appears to run it constantly
float h11i, h12i, h21i, h22i;