| commit | da7e453e1d1c77959822cf9602ddfed1c50be445 | [log] [tgz] |
|---|---|---|
| author | Chris Watkins <watk@google.com> | Tue Apr 07 10:01:15 2015 -0700 |
| committer | Chris Watkins <watk@google.com> | Mon Apr 20 10:14:19 2015 -0700 |
| tree | 2fed02646af0da50bcfc5deb5c86167c06ddfdd2 | |
| parent | ee4e1b1a63758941460ae79a064249d3a5189443 [diff] |
stagefright: add a 2kb cache for CallbackDataSource. Without a cache the mediaserver does a lot of small reads which result in round trips through binder and jni to the app MediaDataSource. On a Nexus 5 I measured time to first frame from MediaPlayer for 1) 1350kbps h264, and 2) 20480kbps vp8. Without a cache, MediaDataSource was ~250ms slower than an fd. With a 2kb cache it's 30ms slower for (1) and 70ms slower for (2). Change-Id: If1e811db7b853c4f79430603318d4744ac30acb9