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| author | Chris Watkins <watk@google.com> | 2015-04-07 10:01:15 -0700 |
|---|---|---|
| committer | Chris Watkins <watk@google.com> | 2015-04-20 10:14:19 -0700 |
| commit | da7e453e1d1c77959822cf9602ddfed1c50be445 (patch) | |
| tree | 2fed02646af0da50bcfc5deb5c86167c06ddfdd2 /media/libstagefright/DataSource.cpp | |
| parent | ee4e1b1a63758941460ae79a064249d3a5189443 (diff) | |
| download | frameworks_av-da7e453e1d1c77959822cf9602ddfed1c50be445.zip frameworks_av-da7e453e1d1c77959822cf9602ddfed1c50be445.tar.gz frameworks_av-da7e453e1d1c77959822cf9602ddfed1c50be445.tar.bz2 | |
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
Diffstat (limited to 'media/libstagefright/DataSource.cpp')
| -rw-r--r-- | media/libstagefright/DataSource.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/media/libstagefright/DataSource.cpp b/media/libstagefright/DataSource.cpp index 6a89154..75ef288 100644 --- a/media/libstagefright/DataSource.cpp +++ b/media/libstagefright/DataSource.cpp @@ -283,7 +283,7 @@ sp<DataSource> DataSource::CreateMediaHTTP(const sp<IMediaHTTPService> &httpServ } sp<DataSource> DataSource::CreateFromIDataSource(const sp<IDataSource> &source) { - return new CallbackDataSource(source); + return new TinyCacheSource(new CallbackDataSource(source)); } String8 DataSource::getMIMEType() const { |