PluginManager.h revision 218a8c03
1/*
2 * Copyright 2015, Dario Casalinuovo. All rights reserved.
3 * Copyright 2012, Fredrik Mod��en. All rights reserved.
4 * Copyright 2004-2007, Marcus Overhagen. All rights reserved.
5 * Distributed under the terms of the MIT License.
6 */
7#ifndef _PLUGIN_MANAGER_H
8#define _PLUGIN_MANAGER_H
9
10
11#include <string.h>
12
13
14#include "DecoderPlugin.h"
15#include "EncoderPlugin.h"
16#include "ReaderPlugin.h"
17#include "StreamerPlugin.h"
18#include "WriterPlugin.h"
19
20#include <TList.h>
21#include <Locker.h>
22
23
24namespace BPrivate { namespace media {
25
26class PluginManager {
27public:
28								PluginManager();
29								~PluginManager();
30
31			MediaPlugin*		GetPlugin(const entry_ref& ref);
32			void				PutPlugin(MediaPlugin* plugin);
33
34	// Readers and Decoders
35			status_t			CreateReader(Reader** reader,
36									int32* streamCount, media_file_format* mff,
37									BDataIO* source);
38			void				DestroyReader(Reader* reader);
39
40			status_t			CreateDecoder(Decoder** decoder,
41									const media_format& format);
42			status_t			CreateDecoder(Decoder** decoder,
43									const media_codec_info& mci);
44			status_t			GetDecoderInfo(Decoder* decoder,
45									media_codec_info* _info) const;
46			void				DestroyDecoder(Decoder* decoder);
47
48	// Writers and Encoders
49			status_t			CreateWriter(Writer** writer,
50									const media_file_format& mff,
51									BDataIO* target);
52			void				DestroyWriter(Writer* writer);
53
54			status_t			CreateEncoder(Encoder** encoder,
55									const media_codec_info* codecInfo,
56									uint32 flags);
57
58			status_t			CreateEncoder(Encoder** encoder,
59									const media_format& format);
60
61			void				DestroyEncoder(Encoder* encoder);
62
63			status_t			CreateStreamer(Streamer** streamer,
64									BUrl url, BDataIO** source);
65			void				DestroyStreamer(Streamer* streamer);
66
67private:
68			status_t			_LoadPlugin(const entry_ref& ref,
69									MediaPlugin** plugin, image_id* image);
70
71			struct plugin_info {
72				char			name[260];
73				int				usecount;
74				MediaPlugin*	plugin;
75				image_id		image;
76
77				plugin_info& operator=(const plugin_info& other)
78				{
79					strcpy(name, other.name);
80					usecount = other.usecount;
81					plugin = other.plugin;
82					image = other.image;
83					return *this;
84				}
85			};
86
87			List<plugin_info>	fPluginList;
88			BLocker				fLocker;
89};
90
91} } // namespace BPrivate::media
92
93using namespace BPrivate::media;
94
95extern PluginManager gPluginManager;
96
97#endif // _PLUGIN_MANAGER_H
98