diff options
| author | Marton Balint <cus@passwd.hu> | 2020-09-26 19:20:50 +0200 |
|---|---|---|
| committer | Marton Balint <cus@passwd.hu> | 2020-10-09 21:07:18 +0200 |
| commit | 6d972beb23385022319cb36892519c70b0d0fc22 (patch) | |
| tree | ddd6a2527ae7ffa344de4758c06801e821426c9e /libavformat | |
| parent | 74c70efd12e6a603bc006bd11f7e7806e7c61aca (diff) | |
avformat/aviobuf: check if requested seekback buffer is already read
Existing code did not check if the requested seekback buffer is
already read entirely. In this case, nothing has to be done to guarantee
seekback.
Signed-off-by: Marton Balint <cus@passwd.hu>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/aviobuf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c index 9675425349..d94be478ac 100644 --- a/libavformat/aviobuf.c +++ b/libavformat/aviobuf.c @@ -999,6 +999,9 @@ int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size) int filled = s->buf_end - s->buffer; ptrdiff_t checksum_ptr_offset = s->checksum_ptr ? s->checksum_ptr - s->buffer : -1; + if (buf_size <= s->buf_end - s->buf_ptr) + return 0; + buf_size += s->buf_ptr - s->buffer + max_buffer_size; if (buf_size < filled || s->seekable || !s->read_packet) |