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| author | Marton Balint <cus@passwd.hu> | 2020-09-20 00:02:19 +0200 |
|---|---|---|
| committer | Marton Balint <cus@passwd.hu> | 2020-10-09 21:07:18 +0200 |
| commit | a11cc04786c298a8e4df3da12d8e275eaaf6b333 (patch) | |
| tree | cdfdc451637c6b89f1d8a268d56e017f5e4640bb | |
| parent | 25ced19aa3097abc0f8b76045efa06b3332c8b94 (diff) | |
| download | ffmpeg-a11cc04786c298a8e4df3da12d8e275eaaf6b333.tar.gz | |
avformat/aviobuf: increase default read buffer size to 2*max_buffer_size for streamed data
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 <cus@passwd.hu>
| -rw-r--r-- | libavformat/aviobuf.c | 5 |
1 files changed, 5 insertions, 0 deletions
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); |