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Merge remote-tracking branch 'qatar/master' 

* qatar/master:
  vorbisdec: Accept 0 amplitude_bits

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-02-25 12:58:26 +01:00
parent f7dc6aa5fe 23bd9ef4b2
commit 875f883185
1 changed files with 3 additions and 7 deletions
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10
libavcodec/vorbisdec.c
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@ -608,13 +608,6 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
return AVERROR_INVALIDDATA;
}
floor_setup->data.t0.amplitude_bits = get_bits(gb, 6);
/* zero would result in a div by zero later *
* 2^0 - 1 == 0 */
if (!floor_setup->data.t0.amplitude_bits) {
av_log(vc->avccontext, AV_LOG_ERROR,
"Floor 0 amplitude bits is 0.\n");
return AVERROR_INVALIDDATA;
}
floor_setup->data.t0.amplitude_offset = get_bits(gb, 8);
floor_setup->data.t0.num_books = get_bits(gb, 4) + 1;
@ -1065,6 +1058,9 @@ static int vorbis_floor0_decode(vorbis_context *vc,
unsigned amplitude, book_idx;
unsigned blockflag = vc->modes[vc->mode_number].blockflag;
if (!vf->amplitude_bits)
return 1;
amplitude = get_bits(&vc->gb, vf->amplitude_bits);
if (amplitude > 0) {
float last = 0;