1/* 2 * Copyright 2003-2009 Haiku Inc. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Marcus Overhagen 7 */ 8#ifndef _MIXER_UTILS_H 9#define _MIXER_UTILS_H 10 11 12#ifndef __SGI_STL_INTERNAL_ALGOBASE_H 13template<class t> const t & max(const t &t1, const t &t2) { return (t1 > t2) ? t1 : t2; } 14template<class t> const t & min(const t &t1, const t &t2) { return (t1 < t2) ? t1 : t2; } 15#endif 16template<class t> const t abs(const t t1) { return (t1 < 0) ? - t1 : t1; } 17 18 19void fix_multiaudio_format(media_multi_audio_format *format); 20 21int count_nonzero_bits(uint32 value); 22 23uint32 GetChannelMask(int channel, uint32 all_channel_masks); 24int GetChannelType(int channel, uint32 all_channel_masks); 25 26bool HasKawamba(); 27 28void ZeroFill(float *_dst, int32 _dst_sample_offset, int32 _sample_count); 29 30bigtime_t buffer_duration(const media_multi_audio_format & format); 31 32int bytes_per_sample(const media_multi_audio_format & format); 33 34int bytes_per_frame(const media_multi_audio_format & format); 35int frames_per_buffer(const media_multi_audio_format & format); 36 37int64 frames_for_duration(double framerate, bigtime_t duration); 38bigtime_t duration_for_frames(double framerate, int64 frames); 39 40int ChannelMaskToChannelType(uint32 mask); 41uint32 ChannelTypeToChannelMask(int type); 42 43double us_to_s(bigtime_t usecs); 44bigtime_t s_to_us(double secs); 45 46class MixerInput; 47class MixerOutput; 48 49const char *StringForFormat(char *buf, MixerOutput *output); 50const char *StringForFormat(char *buf, MixerInput *input); 51const char *StringForChannelMask(char *buf, uint32 mask); 52const char *StringForChannelType(char *buf, int type); 53 54#endif // _MIXER_UTILS_H 55