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avformat/matroskadec: avoid calling get_bytes_left() three times with the same state

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Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili
2026-04-01 21:09:47 +08:00
committed by James Almer
parent bba9bf7e7e
commit 28ab24b717
1 changed files with 4 additions and 4 deletions
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8
libavformat/matroskadec.c
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@@ -3978,15 +3978,15 @@ static int matroska_parse_block_additional(MatroskaDemuxContext *matroska,
switch (provider_code) {
case ITU_T_T35_PROVIDER_CODE_VNOVA: {
uint8_t *data;
int left = bytestream2_get_bytes_left(&bc);
if (bytestream2_get_bytes_left(&bc) < 2)
if (left < 2)
return AVERROR_INVALIDDATA;
data = av_packet_new_side_data(pkt, AV_PKT_DATA_LCEVC, bytestream2_get_bytes_left(&bc));
data = av_packet_new_side_data(pkt, AV_PKT_DATA_LCEVC, left);
if (!data)
return AVERROR(ENOMEM);
bytestream2_get_bufferu(&bc, data, bytestream2_get_bytes_left(&bc));
bytestream2_get_bufferu(&bc, data, left);
return 0;
}