CR: file io error on local surestream clips

Nokia submits this code under the terms of a commercial
contribution
agreement with RealNetworks, and I am authorized to
contribute this code
under said agreement."

Modified by:  john.weinokia.com

Reviewed by:

Date: 26-June-2007

Project: SymbianMmf_Rel

TSW: MVIA-6VREEA

Synopsis: file io error on local surestream clips

In the usual case, only one CHXMiniFileObject is created and
it accesses
to one IHXMMFDataSource object for reading the local clip.
However, in
the case of local surestream clip, multiple
CHXMiniFileObject are
created. However, they are currently using the same
IHXMMFDataSource
object for file reading, resulting massive clip reading
error. Symbian
MMF framework gives Helix only one IHXMMFDataSource object.

This CR proposes a set of read, write, open, seek, and close
methods on
IHXMMFDataSource. These new methods enable multiple
CHXMiniFileObject
objects to read file though single IHXMMFDataSource object
without
interfering each other's reading pointer.

Files Modified:

RCS file: /cvsroot/common/include/ihxmmfdatasource.h,v
RCS file: /cvsroot/common/fileio/hxdatasource.cpp,v
RCS file: /cvsroot/common/fileio/pub/hxdatasource.h,v
RCS file: /cvsroot/filesystem/local/mini/minifileobj.cpp,v

======================================================
Image Size and Heap Use impact: minor

Module Release testing (STIF) :  Passed

Test case(s) Added  :  Yes, any local surestream clip

Memory leak check performed : Yes.  No new leaks introduced.
 

Platforms and Profiles Build Verified:
helix-client-s60-32-mmf-mdf-arm

Platforms and Profiles Functionality verified: armv5, winscw


Branch: Head & 210CayS

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