[FFmpeg-cvslog] avformat/matroskadec: Remove unnecessary check
Andreas Rheinhardt
git at videolan.org
Thu Dec 5 04:20:37 EET 2019
ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at gmail.com> | Tue Dec 3 18:09:08 2019 +0100| [f74eaa17bb0b2a5a7d550c107cd119da87c946bc] | committer: James Almer
avformat/matroskadec: Remove unnecessary check
870e7552 introduced validating the lace sizes when they are parsed and
removed the old check; yet when merging this libav commit in 6902c3ac,
the old check for whether the frame extends beyond the frame has been kept.
It is unnecessary and has been removed.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
Signed-off-by: James Almer <jamrial at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f74eaa17bb0b2a5a7d550c107cd119da87c946bc
---
libavformat/matroskadec.c | 13 +++----------
1 file changed, 3 insertions(+), 10 deletions(-)
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 88c43ee0c1..595d9553a2 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -2989,10 +2989,10 @@ static void matroska_clear_queue(MatroskaDemuxContext *matroska)
}
static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
- int *buf_size, int type,
+ int size, int type,
uint32_t lace_size[256], int *laces)
{
- int n, size = *buf_size;
+ int n;
uint8_t *data = *buf;
if (!type) {
@@ -3079,7 +3079,6 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
}
*buf = data;
- *buf_size = size;
return 0;
}
@@ -3574,7 +3573,7 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, AVBufferRef *buf
}
}
- res = matroska_parse_laces(matroska, &data, &size, (flags & 0x06) >> 1,
+ res = matroska_parse_laces(matroska, &data, size, (flags & 0x06) >> 1,
lace_size, &laces);
if (res < 0)
return res;
@@ -3597,11 +3596,6 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, AVBufferRef *buf
for (n = 0; n < laces; n++) {
int64_t lace_duration = block_duration*(n+1) / laces - block_duration*n / laces;
- if (lace_size[n] > size) {
- av_log(matroska->ctx, AV_LOG_ERROR, "Invalid packet size\n");
- break;
- }
-
if ((st->codecpar->codec_id == AV_CODEC_ID_RA_288 ||
st->codecpar->codec_id == AV_CODEC_ID_COOK ||
st->codecpar->codec_id == AV_CODEC_ID_SIPR ||
@@ -3633,7 +3627,6 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, AVBufferRef *buf
if (timecode != AV_NOPTS_VALUE)
timecode = lace_duration ? timecode + lace_duration : AV_NOPTS_VALUE;
data += lace_size[n];
- size -= lace_size[n];
}
return 0;
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