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Sanity checks for magnitude and angle. 

26_vorbis_mag_angle_index.patch by chrome

Originally committed as revision 19983 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Google Chrome 2009-09-23 10:40:33 +00:00 committed by Michael Niedermayer
parent 08c8742cdb
commit d70fa8f131
1 changed files with 8 additions and 1 deletions
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9
libavcodec/vorbis_dec.c
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@ -697,7 +697,14 @@ 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;