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1/**
2 * @file llmediaimplfactory.h
3 * @brief Creates media impls that have registered themselves with LLMediaRegster
4 *
5 * $LicenseInfo:firstyear=2007&license=viewergpl$
6 *
7 * Copyright (c) 2007-2009, Linden Research, Inc.
8 *
9 * Second Life Viewer Source Code
10 * The source code in this file ("Source Code") is provided by Linden Lab
11 * to you under the terms of the GNU General Public License, version 2.0
12 * ("GPL"), unless you have obtained a separate licensing agreement
13 * ("Other License"), formally executed by you and Linden Lab. Terms of
14 * the GPL can be found in doc/GPL-license.txt in this distribution, or
15 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
16 *
17 * There are special exceptions to the terms and conditions of the GPL as
18 * it is applied to this Source Code. View the full text of the exception
19 * in the file doc/FLOSS-exception.txt in this software distribution, or
20 * online at
21 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
22 *
23 * By copying, modifying or distributing this software, you acknowledge
24 * that you have read and understood your obligations described above,
25 * and agree to abide by those obligations.
26 *
27 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
28 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
29 * COMPLETENESS OR PERFORMANCE.
30 * $/LicenseInfo$
31 */
32
33#ifndef LLMEDIAIMPLFACTORY_H
34#define LLMEDIAIMPLFACTORY_H
35
36#include <algorithm>
37#include <map>
38#include <string>
39#include <vector>
40
41#include "llmediabase.h"
42
43///////////////////////////////////////////////////////////////////////////////
44//
45class LLMediaImplMakerBase
46{
47 public:
48 virtual bool supportsScheme(std::string scheme) = 0;
49 virtual bool supportsMimeType(std::string type) = 0;
50 virtual bool supportsMimeTypeCategory(std::string category) = 0;
51 virtual LLMediaBase* create() = 0;
52 virtual ~LLMediaImplMakerBase() {};
53
54 protected:
55 typedef std::vector <std::string> vector_impl_registry_t;
56 vector_impl_registry_t mSchema;
57 vector_impl_registry_t mMimeTypes;
58 vector_impl_registry_t mMimeTypeCategories;
59};
60
61///////////////////////////////////////////////////////////////////////////////
62//
63class LLMediaImplMaker : public LLMediaImplMakerBase
64{
65 public:
66 bool supportsScheme(std::string scheme)
67 {
68 vector_impl_registry_t::iterator found = std::find(mSchema.begin(), mSchema.end(), scheme);
69 return found != mSchema.end();
70 }
71 bool supportsMimeType(std::string type)
72 {
73 vector_impl_registry_t::iterator found = std::find(mMimeTypes.begin(), mMimeTypes.end(), type);
74 return found != mMimeTypes.end();
75 }
76 bool supportsMimeTypeCategory(std::string category)
77 {
78 vector_impl_registry_t::iterator found = std::find(mMimeTypeCategories.begin(), mMimeTypeCategories.end(), category);
79 return found != mMimeTypeCategories.end();
80 }
81};
82
83///////////////////////////////////////////////////////////////////////////////
84//
85class LLMediaImplFactory
86{
87 public:
88 static LLMediaImplFactory* getInstance();
89 void registerImpl( const std::string& impl_name, LLMediaImplMakerBase* impl_maker );
90 LLMediaImplMakerBase* getImplMaker( const std::string& scheme, const std::string& type );
91 LLMediaImplMakerBase* getImplMaker( const std::string& impl_name);
92
93 private:
94 typedef std::map< std::string, LLMediaImplMakerBase* > name_impl_maker_container_t;
95 name_impl_maker_container_t mNameImplMakerContainer;
96
97 static LLMediaImplFactory* sInstance;
98};
99
100#endif // LLMEDIAIMPLFACTORY_H