diff options
Diffstat (limited to 'libavcodec/aacsbr_fixed.c')
| -rw-r--r-- | libavcodec/aacsbr_fixed.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/libavcodec/aacsbr_fixed.c b/libavcodec/aacsbr_fixed.c index 8eb8c5867f..b4e3ac7f76 100644 --- a/libavcodec/aacsbr_fixed.c +++ b/libavcodec/aacsbr_fixed.c @@ -169,6 +169,10 @@ static void sbr_dequant(SpectralBandReplication *sbr, int id_aac) else temp1.mant = 0x20000000; temp1.exp = (temp1.exp >> 1) + 1; + if (temp1.exp > 66) { // temp1 > 1E20 + av_log(NULL, AV_LOG_ERROR, "envelope scalefactor overflow in dequant\n"); + temp1 = FLOAT_1; + } temp2.exp = (pan_offset - sbr->data[1].env_facs[e][k].mant) * alpha; if (temp2.exp & 1) @@ -188,6 +192,10 @@ static void sbr_dequant(SpectralBandReplication *sbr, int id_aac) temp1.exp = NOISE_FLOOR_OFFSET - \ sbr->data[0].noise_facs[e][k].mant + 2; temp1.mant = 0x20000000; + if (temp1.exp > 66) { // temp1 > 1E20 + av_log(NULL, AV_LOG_ERROR, "envelope scalefactor overflow in dequant\n"); + temp1 = FLOAT_1; + } temp2.exp = 12 - sbr->data[1].noise_facs[e][k].mant + 1; temp2.mant = 0x20000000; fac = av_div_sf(temp1, av_add_sf(FLOAT_1, temp2)); @@ -208,7 +216,10 @@ static void sbr_dequant(SpectralBandReplication *sbr, int id_aac) else temp1.mant = 0x20000000; temp1.exp = (temp1.exp >> 1) + 1; - + if (temp1.exp > 66) { // temp1 > 1E20 + av_log(NULL, AV_LOG_ERROR, "envelope scalefactor overflow in dequant\n"); + temp1 = FLOAT_1; + } sbr->data[ch].env_facs[e][k] = temp1; } for (e = 1; e <= sbr->data[ch].bs_num_noise; e++) |