MWSound::Sound_Loudness Class Reference

#include <loudness.hpp>

Collaboration diagram for MWSound::Sound_Loudness:

Public Member Functions
	Sound_Loudness (float samplesPerSecond, int sampleRate, ChannelConfig chans, SampleType type)
void	analyzeLoudness (const std::vector< char > &data)
float	getLoudnessAtTime (float sec) const

Private Attributes
float	mSamplesPerSec
int	mSampleRate
ChannelConfig	mChannelConfig
SampleType	mSampleType
std::vector< float >	mSamples
std::deque< char >	mQueue

Constructor & Destructor Documentation

MWSound::Sound_Loudness::Sound_Loudness ( float  samplesPerSecond, int  sampleRate, ChannelConfig  chans, SampleType  type  )

inline

Parameters

samplesPerSecond	How many loudness values per second of audio to compute.
sampleRate	the sample rate of the sound buffer
chans	channel layout of the buffer
type	sample type of the buffer

Member Function Documentation

void MWSound::Sound_Loudness::analyzeLoudness

(

const std::vector< char > &

data

)

Analyzes the energy (closely related to loudness) of a sound buffer. The buffer will be divided into segments according to valuesPerSecond, and for each segment a loudness value in the range of [0,1] will be computed. The computed values are then added to the mSamples vector. This method should be called continuously with chunks of audio until the whole audio file is processed. If the size of data does not exactly fit a number of loudness samples, the remainder will be kept in the mQueue and used in the next call to analyzeLoudness.

Parameters

data	the sound buffer to analyze, containing raw samples

Here is the call graph for this function:

float MWSound::Sound_Loudness::getLoudnessAtTime

(

float

sec

)

const

Get loudness at a particular time. Before calling this, the stream has to be analyzed up to that point in time (see analyzeLoudness()).

Member Data Documentation

ChannelConfig MWSound::Sound_Loudness::mChannelConfig

private

std::deque<char> MWSound::Sound_Loudness::mQueue

private

int MWSound::Sound_Loudness::mSampleRate

private

std::vector<float> MWSound::Sound_Loudness::mSamples

private

float MWSound::Sound_Loudness::mSamplesPerSec

private

SampleType MWSound::Sound_Loudness::mSampleType

private

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The documentation for this class was generated from the following files:

• /home/travis/build/OpenMW/openmw/apps/openmw/mwsound/loudness.hpp
• /home/travis/build/OpenMW/openmw/apps/openmw/mwsound/loudness.cpp