ClanLib  2.3.7
fadefilter.h
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1 /*
2 ** ClanLib SDK
3 ** Copyright (c) 1997-2011 The ClanLib Team
4 **
5 ** This software is provided 'as-is', without any express or implied
6 ** warranty. In no event will the authors be held liable for any damages
7 ** arising from the use of this software.
8 **
9 ** Permission is granted to anyone to use this software for any purpose,
10 ** including commercial applications, and to alter it and redistribute it
11 ** freely, subject to the following restrictions:
12 **
13 ** 1. The origin of this software must not be misrepresented; you must not
14 ** claim that you wrote the original software. If you use this software
15 ** in a product, an acknowledgment in the product documentation would be
16 ** appreciated but is not required.
17 ** 2. Altered source versions must be plainly marked as such, and must not be
18 ** misrepresented as being the original software.
19 ** 3. This notice may not be removed or altered from any source distribution.
20 **
21 ** Note: Some of the libraries ClanLib may link to may have additional
22 ** requirements or restrictions.
23 **
24 ** File Author(s):
25 **
26 ** Magnus Norddahl
27 ** Mark Page
28 */
29 
32 
33 #pragma once
34 
35 #include "../api_sound.h"
36 #include "../soundfilter.h"
37 
38 class CL_FadeFilterProvider;
39 
44 {
47 
48 public:
50  CL_FadeFilter(float initial_volume);
51 
53  virtual ~CL_FadeFilter();
54 
58 
59 public:
61  float get_volume() const;
62 
66 
67 public:
68 
70  CL_FadeFilterProvider *get_provider() const;
71 
73  void set_volume(float new_volume);
74 
76  void fade_to_volume(float new_volume, int duration = 1000);
77 
81 
82 private:
84 };
85