LEGAL
author Chris Pearce <cpearce@mozilla.com>
Wed, 15 Jan 2014 16:13:54 +1300
changeset 180451 eb70f67d384a2de272246337052f7225ee84ed4e
parent 1 9b2a99adc05e53cd4010de512f50118594756650
permissions -rw-r--r--
Bug 959440 - Various cleanups in MP4Reader. r=kinetik Change PlatformDecoderModule::Create*Decoder() to take an mp4_demuxer::{Audio,Video}DecoderConfig parameter, instead of enumerating all parameters. This means the platform decoders can have more data if need be, like the AACAudioConfig. Change MediaDataDecoder::Input() to take an nsAutoPtr<MP4Sample>&. The sample will be deleted by the caller (MP4Reader) if Input() returns DECODE_STATUS_OK, but if the MediaDataDecoder wants to assume responsibility of the lifecycle of the sample (say to enqueue it), it can forget() on the nsAutoPtr& passed in and assume responsibility. Call PlatformDecoderModule::Create() on the decode thread. This is a step towards making these classes decode-thread only. Add PlatformDecoderModule::Init(), which caches the pref's we need, since PlatformDecoderModule::Create() is no longer called on the main thread, we can no longer access them in there. Add Init() method to MediaDataDecoder interface. This is so that we can call MediaDataDecoder::Shutdown() to unblock the initialization of a decoder, if that init needs to block. Pass LayersBackend type to WMFVideoDecoder, so it knows whether to init DXVA.

Please be apprised of the following Legal Notices:

A) The U.S. District Court for the Eastern District of Virginia has
ruled that the Netscape Navigator code does not infringe Wang's U.S.
Patent No. 4,751,669 ("the '669 Patent") because: 1) HTML is not
Videotex as defined by the '669 patent; 2) web servers are not central
suppliers; and 3) Navigator does not "connect," as defined by the '669
Patent, to web servers on the Internet. Wang may appeal this decision to
the Federal Circuit. Wang contended that its Patent disclosing a
"Videotex" system, is infringed by the following functionality in the
Netscape Navigator code: 1) the animated logo and status line indicators
--See Claims 1,8 and 9; 2) the "File Save As" function --See Claims
23-27; 3) Bookmarks and Rename Bookmarks in the Properties window --See
Claims 20-22; 4) storing HTML, GIF, and JPEG files and adding filename
extensions --See Claim 38

B) Intermind owns pending U.S. patent applications on communications
systems which employ metadata ("channel objects") to define a control
structure for information transfer. The Netscape code does not infringe
as released; however, modifications which utilize channel objects as
described by Intermind should be considered carefully. The following is
a statement from Intermind: "Intermind's claims fundamentally involve
the use of a control structure to automate communications. ...The
essence of Intermind's top claim is that two devices sender and receiver
have persistent storage, communicate over a network, and exchange a
control structure including metadata which describes: 1) what
information is to be updated, 2) when to update this information, and 3)
how to transfer the updated information. In addition, at least the
receiving device must be able to process the metadata in order to
perform the update determination and transfer. Any digital
communications system which incorporates all of these elements will be
covered by Intermind's patents." See Intermind.com.

C) Stac, Inc., and its licensing agent Hi/fn, own several patents which
disclose data compression methods implementing an LZS compression
algorithm, including U.S. Patent Nos. 4,701,745 and 5,016, 009 ("the
Stac Patents"). The Netscape Communicator code does not perform
compression. If you modify the Netscape source code to perform
compression, please take notice of the Stac Patents.

D) Netscape Communications Corporation ("Netscape") does not guarantee
that any source code or executable code available from the mozilla.org
domain is Year 2000 compliant.