1//------------------------------------------------------------------------------
2//	Copyright (c) 2001-2002, Haiku
3//
4//	Permission is hereby granted, free of charge, to any person obtaining a
5//	copy of this software and associated documentation files (the "Software"),
6//	to deal in the Software without restriction, including without limitation
7//	the rights to use, copy, modify, merge, publish, distribute, sublicense,
8//	and/or sell copies of the Software, and to permit persons to whom the
9//	Software is furnished to do so, subject to the following conditions:
10//
11//	The above copyright notice and this permission notice shall be included in
12//	all copies or substantial portions of the Software.
13//
14//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19//	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20//	DEALINGS IN THE SOFTWARE.
21//
22//	File Name:		GameSoundDevice.h
23//	Author:			Christopher ML Zumwalt May (zummy@users.sf.net)
24//	Description:	Utility functions used by sound system
25//------------------------------------------------------------------------------
26#ifndef _GAMESOUND_UTILITY_H
27#define _GAMESOUND_UTILITY_H
28
29
30#include <GameSoundDefs.h>
31#include <MediaDefs.h>
32
33
34struct _gs_ramp
35{
36	float inc;
37	float orignal;
38	float* value;
39
40	float frame_total;
41	float frame_inc;
42
43	float frame_count;
44	float frame_inc_count;
45
46	bigtime_t duration;
47};
48
49
50_gs_ramp* InitRamp(float* value, float set, float frames, bigtime_t duration);
51bool ChangeRamp(_gs_ramp* ramp);
52size_t get_sample_size(int32 format);
53void media_to_gs_format(gs_audio_format* dest,
54	media_raw_audio_format* source);
55
56
57template<typename T, int32 min, int32 max>
58static inline T clamp(float value)
59{
60	if (value <= min)
61		return min;
62	if (value >= max)
63		return max;
64	return T(value);
65}
66#endif
67