Commit ba30b746 authored by Luca Barbato's avatar Luca Barbato

aac: Validate the sbr sample rate before using the value

Avoid a floating point exception.

Bug-Id: 1027
CC: libav-stable@libav.org
parent 0ee78020
......@@ -327,16 +327,6 @@ static int sbr_make_f_master(AACContext *ac, SpectralBandReplication *sbr,
const int8_t *sbr_offset_ptr;
int16_t stop_dk[13];
if (sbr->sample_rate < 32000) {
temp = 3000;
} else if (sbr->sample_rate < 64000) {
temp = 4000;
} else
temp = 5000;
start_min = ((temp << 7) + (sbr->sample_rate >> 1)) / sbr->sample_rate;
stop_min = ((temp << 8) + (sbr->sample_rate >> 1)) / sbr->sample_rate;
switch (sbr->sample_rate) {
case 16000:
sbr_offset_ptr = sbr_offset[0];
......@@ -362,6 +352,16 @@ static int sbr_make_f_master(AACContext *ac, SpectralBandReplication *sbr,
return -1;
}
if (sbr->sample_rate < 32000) {
temp = 3000;
} else if (sbr->sample_rate < 64000) {
temp = 4000;
} else
temp = 5000;
start_min = ((temp << 7) + (sbr->sample_rate >> 1)) / sbr->sample_rate;
stop_min = ((temp << 8) + (sbr->sample_rate >> 1)) / sbr->sample_rate;
sbr->k[0] = start_min + sbr_offset_ptr[spectrum->bs_start_freq];
if (spectrum->bs_stop_freq < 14) {
......
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