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