This removes big CPU overhead for demuxing chained ogg streams.
Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavformat/aviobuf.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index a77517d712..6d01150f66 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -1005,12 +1005,11 @@ int ffio_ensure_seekback(AVIOContext *s, int64_t
buf_size)
return 0;
av_assert0(!s->write_flag);
- buffer = av_malloc(buf_size);
+ buffer = s->buffer;
+ buffer = av_realloc(buffer, buf_size);
if (!buffer)
return AVERROR(ENOMEM);
- memcpy(buffer, s->buffer, filled);
- av_free(s->buffer);
s->buf_ptr = buffer + (s->buf_ptr - s->buffer);
s->buf_end = buffer + (s->buf_end - s->buffer);
s->buffer = buffer;
--
2.17.1
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