This should increase the effectiveness of ffio_ensure_seekback by reducing the
number of buffer reallocations and memmoves/memcpys because even a small
seekback window requires max_buffer_size+window_size buffer space.
Signed-off-by: Marton Balint <c...@passwd.hu>
---
libavformat/aviobuf.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index c4195e310b..15d91f91bc 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -938,6 +938,11 @@ int ffio_fdopen(AVIOContext **s, URLContext *h)
} else {
buffer_size = IO_BUFFER_SIZE;
}
+ if (!(h->flags & AVIO_FLAG_WRITE) && h->is_streamed) {
+ if (buffer_size > INT_MAX/2)
+ return AVERROR(EINVAL);
+ buffer_size *= 2;
+ }
buffer = av_malloc(buffer_size);
if (!buffer)
return AVERROR(ENOMEM);
--
2.26.2
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
