SimpleDonwmixSource Class Reference

#include <DownmixSource.h>

Inheritance diagram for SimpleDonwmixSource:

Collaboration diagram for SimpleDonwmixSource:

Public Member Functions
	SimpleDonwmixSource (AudioGraph::Source &downstream, size_t channels)
AudioGraph::Source &	GetDownstream () const override
	Returns underlying AudioGraph::Source processed by Mixer. More...
size_t	NChannels () const override
	Number of output channels of the underlying Source. More...
float	GetChannelGain (size_t channel) const override
	Gain multiplier that should be applied to the channel. More...
void	FindChannelFlags (unsigned char *channelFlags, size_t numChannels, size_t iChannel) override
bool	CanMakeMono () const override
	Returns true if source channels could be combined into mono if needed. More...
Public Member Functions inherited from DownmixSource
	DownmixSource ()=default
virtual	~DownmixSource ()=default
virtual AudioGraph::Source &	GetDownstream () const =0
	Returns underlying AudioGraph::Source processed by Mixer. More...
virtual size_t	NChannels () const =0
	Number of output channels of the underlying Source. More...
virtual float	GetChannelGain (size_t channel) const =0
	Gain multiplier that should be applied to the channel. More...
virtual void	FindChannelFlags (unsigned char *channelFlags, size_t numChannels, size_t iChannel)=0
virtual bool	CanMakeMono () const =0
	Returns true if source channels could be combined into mono if needed. More...

Private Attributes
AudioGraph::Source &	mDownstream
size_t	mNChannels

Detailed Description

No gain applied, channels are either mapped to corresponding ones or combined into mono, depending on FindChannelFlags input

Definition at line 68 of file DownmixSource.h.

Constructor & Destructor Documentation

SimpleDonwmixSource()

SimpleDonwmixSource::SimpleDonwmixSource	(	AudioGraph::Source &	downstream,
		size_t	channels
	)

Definition at line 67 of file DownmixSource.cpp.

   : mDownstream(downstream), mNChannels(channels)
{
}

Member Function Documentation

CanMakeMono()

bool SimpleDonwmixSource::CanMakeMono ( ) const

overridevirtual

Returns true if source channels could be combined into mono if needed.

Implements DownmixSource.

Definition at line 101 of file DownmixSource.cpp.

{
   return true;
}

FindChannelFlags()

void SimpleDonwmixSource::FindChannelFlags ( unsigned char *  channelFlags, size_t  numChannels, size_t  iChannel  )

overridevirtual

For the given iChannel fills the channelFlags array, that describes to which output it should go.

Implements DownmixSource.

Definition at line 87 of file DownmixSource.cpp.

{
   if(mNChannels == 1)
   {
      for(size_t i = 0; i < numChannels; ++i)
         channelFlags[i] = true;
   }
   else
   {
      for(size_t i = 0; i < numChannels; ++i)
         channelFlags[i] = i == iChannel;
   }
}

References anonymous_namespace{StretchingSequenceIntegrationTest.cpp}::iChannel, and mNChannels.

GetChannelGain()

float SimpleDonwmixSource::GetChannelGain ( size_t  channel ) const

overridevirtual

Gain multiplier that should be applied to the channel.

Implements DownmixSource.

Definition at line 82 of file DownmixSource.cpp.

{
   return 1.0f;
}

GetDownstream()

AudioGraph::Source & SimpleDonwmixSource::GetDownstream ( ) const

overridevirtual

Returns underlying AudioGraph::Source processed by Mixer.

Implements DownmixSource.

Definition at line 72 of file DownmixSource.cpp.

{
   return mDownstream;
}

References mDownstream.

NChannels()

size_t SimpleDonwmixSource::NChannels ( ) const

overridevirtual

Number of output channels of the underlying Source.

Implements DownmixSource.

Definition at line 77 of file DownmixSource.cpp.

{
   return mNChannels;
}

References mNChannels.

Member Data Documentation

mDownstream

AudioGraph::Source& SimpleDonwmixSource::mDownstream

private

Definition at line 70 of file DownmixSource.h.

Referenced by GetDownstream().

mNChannels

size_t SimpleDonwmixSource::mNChannels

private

Definition at line 71 of file DownmixSource.h.

Referenced by FindChannelFlags(), and NChannels().

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

• DownmixSource.h
• DownmixSource.cpp