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Sanity checks for magnitude and angle.

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26_vorbis_mag_angle_index.patch by chrome

backport r19983 by michael


Originally committed as revision 21723 to svn://svn.ffmpeg.org/ffmpeg/branches/0.5
This commit is contained in:
Google Chrome 2010-02-09 19:45:16 +00:00 committed by Reinhard Tartler
parent 9ef13f70f4
commit 0d3f25eb48
1 changed files with 8 additions and 1 deletions
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9
libavcodec/vorbis_dec.c
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@ -702,7 +702,14 @@ static int vorbis_parse_setup_hdr_mappings(vorbis_context *vc) {
for(j=0;j<mapping_setup->coupling_steps;++j) {
mapping_setup->magnitude[j]=get_bits(gb, ilog(vc->audio_channels-1));
mapping_setup->angle[j]=get_bits(gb, ilog(vc->audio_channels-1));
// FIXME: sanity checks
if (mapping_setup->magnitude[j]>=vc->audio_channels) {
av_log(vc->avccontext, AV_LOG_ERROR, "magnitude channel %d out of range. \n", mapping_setup->magnitude[j]);
return 1;
}
if (mapping_setup->angle[j]>=vc->audio_channels) {
av_log(vc->avccontext, AV_LOG_ERROR, "angle channel %d out of range. \n", mapping_setup->angle[j]);
return 1;
}
}
} else {
mapping_setup->coupling_steps=0;