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ffmpeg.wasm-core
Commit 95e3fdb8 authored by Kostya Shishkov's avatar Kostya Shishkov
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pqindex=0 is forbidden 

Originally committed as revision 11540 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 9ccbc672
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libavcodec/vc1.c
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...@@ -1065,6 +1065,7 @@ static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb) ...@@ -1065,6 +1065,7 @@ static int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
/* Quantizer stuff */ /* Quantizer stuff */
pqindex = get_bits(gb, 5); pqindex = get_bits(gb, 5);
if(!pqindex) return -1;
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
v->pq = ff_vc1_pquant_table[0][pqindex]; v->pq = ff_vc1_pquant_table[0][pqindex];
else else
...@@ -1301,6 +1302,7 @@ static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb) ...@@ -1301,6 +1302,7 @@ static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
} }
} }
pqindex = get_bits(gb, 5); pqindex = get_bits(gb, 5);
if(!pqindex) return -1;
v->pqindex = pqindex; v->pqindex = pqindex;
if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
v->pq = ff_vc1_pquant_table[0][pqindex]; v->pq = ff_vc1_pquant_table[0][pqindex];
......
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