| commit | 88c8cb264719a9ae817803b0260fc07a6acb03c7 | |
| author | tommycli@chromium.org <tommycli@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | |
| Tue, 4 Mar 2014 20:55:57 +0000 (4 20:55 +0000) | ||
| committer | tommycli@chromium.org <tommycli@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | |
| Tue, 4 Mar 2014 20:55:57 +0000 (4 20:55 +0000) | ||
| tree | 2f6cd36676567283c41da61833c161260c507b58 | treesnapshot (tar.gz zip) |
| parent | 733f7fed2dcfe92c9d94d225051d376580d8a43f | commitdiff |
MTP Streaming: Optimize header verification.
Currently, for MTP streaming, we make a special request for the header bytes, to verify that it is indeed a media file.
In the common case of reading from start to finish, this is wasteful, as the originally requested read starts from the 0th byte and includes the header bytes anyways.
This detects that case, and reads the first chunk directly, and then looks at the header bytes within that.
BUG=110119
Review URL: https://codereview.chromium.org/185593008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254818 0039d316-1c4b-4281-b951-d872f2087c98
Currently, for MTP streaming, we make a special request for the header bytes, to verify that it is indeed a media file.
In the common case of reading from start to finish, this is wasteful, as the originally requested read starts from the 0th byte and includes the header bytes anyways.
This detects that case, and reads the first chunk directly, and then looks at the header bytes within that.
BUG=110119
Review URL: https://codereview.chromium.org/185593008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254818 0039d316-1c4b-4281-b951-d872f2087c98
| chrome/browser/media_galleries/fileapi/mtp_file_stream_reader.cc | diffblobblamehistory |