MediaAccessFacade Class Reference

#include "vault/media-access-facade.hpp"

Description

Interface to the vault layer: provides functions for querying (opening) a media file, detecting the channels or streams found within this file etc.

Implementation delegating to the actual vault layer functions.

convention: data passed by pointer is owned by the originator; it should be copied if needed beyond the control flow of the invoked function.

Definition at line 57 of file media-access-facade.hpp.

Public Types
typedef void *	ChanHandle

Static Public Attributes
static lib::Depend< MediaAccessFacade >	instance
	storage for the SingletonFactory (actually a lumiera::test::MockInjector)

Public Member Functions
virtual MediaDesc &	queryFile (string const &name) const
	request for testing the denoted files accessibility
virtual ChanDesc	queryChannel (MediaDesc &, uint chanNo) const
	request for information about the n-th channel of the file referred by FileHandle.
virtual	~MediaAccessFacade ()

Constructor & Destructor Documentation

~MediaAccessFacade()

virtual ~MediaAccessFacade ( )

inlinevirtual

Definition at line 83 of file media-access-facade.hpp.

Member Typedef Documentation

ChanHandle

typedef void* ChanHandle

Definition at line 60 of file media-access-facade.hpp.

Member Function Documentation

queryFile()

MediaDesc & queryFile ( string const &  name ) const

virtual

request for testing the denoted files accessibility

Parameters

name	path and filename of the media file.

Exceptions

error::Invalid

when passing empty filename, or in case the media file is inaccessible or otherwise inappropriate.

Returns

opaque handle usable for querying channel information from this file, NULL if the file is not accessible.

Reimplemented in MediaAccessMock.

Definition at line 39 of file media-access-facade.cpp.

Referenced by MediaAccessMock_test::queryScenario().

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queryChannel()

ChanDesc queryChannel ( MediaDesc &  mHandle, uint  chanNo  ) const

virtual

request for information about the n-th channel of the file referred by FileHandle.

Returns

ChanDesc which may contain NULL values if the file doesn't contain this much channels.

Todo:

throw or return NULL-ChanDesc if Filehandle is invalid?

Reimplemented in MediaAccessMock.

Definition at line 49 of file media-access-facade.cpp.

Referenced by MediaAccessMock_test::queryScenario().

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Member Data Documentation

instance

lib::Depend< MediaAccessFacade > instance

static

storage for the SingletonFactory (actually a lumiera::test::MockInjector)

Definition at line 62 of file media-access-facade.hpp.

Referenced by MediaAccessMock_test::queryScenario().

Inheritance diagram for MediaAccessFacade:

Collaboration diagram for MediaAccessFacade:

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The documentation for this class was generated from the following files:

• media-access-facade.hpp
• media-access-facade.cpp