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| author | Kostya Shishkov <kostya.shishkov@gmail.com> | 2020-04-04 12:27:55 +0200 |
|---|---|---|
| committer | Kostya Shishkov <kostya.shishkov@gmail.com> | 2020-04-04 12:27:55 +0200 |
| commit | df05c4383da3fc259763db9b905dff548e74e2be (patch) | |
| tree | c44edc0bc10197ed8c0505d1c6fb9be5df1c8e96 /nihav-codec-support/src | |
| parent | 1b6a1780de9e8f350bfea12394bbf1d59bef4d46 (diff) | |
| download | nihav-df05c4383da3fc259763db9b905dff548e74e2be.tar.gz | |
codec_support/h263: validate that B-frame has enough reference data
Diffstat (limited to 'nihav-codec-support/src')
| -rw-r--r-- | nihav-codec-support/src/codecs/h263/decoder.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/nihav-codec-support/src/codecs/h263/decoder.rs b/nihav-codec-support/src/codecs/h263/decoder.rs index 7a88882..02d6075 100644 --- a/nihav-codec-support/src/codecs/h263/decoder.rs +++ b/nihav-codec-support/src/codecs/h263/decoder.rs @@ -213,6 +213,10 @@ impl H263BaseDecoder { } let is_b = pinfo.mode == Type::B; + if is_b && (self.mv_data.len() < self.mb_w * self.mb_h) { + return Err(DecoderError::MissingReference); + } + let tsdiff = if pinfo.is_pb() { pinfo.ts.wrapping_sub(self.last_ts) >> 1 } else { self.last_ts.wrapping_sub(self.next_ts) >> 1 }; let bsdiff = if pinfo.is_pb() { (pinfo.get_pbinfo().get_trb() as u16) << 7 } |