ttv::broadcast::PcmAudioMixer Class Reference

#include <pcmaudiomixer.h>

Public Member Functions
	PcmAudioMixer (uint32_t numChannels, uint32_t numSamplesPerChannelPerPacket)
virtual	~PcmAudioMixer ()
TTV_ErrorCode	SubmitAudioSamples (const int16_t *data, uint64_t startTime, size_t length, float volume)
TTV_ErrorCode	GetNextPacketTime (uint64_t &nextPacketTime) const
TTV_ErrorCode	GetPacket (int16_t *buffer, uint64_t &nextPacketTime)

Private Types
typedef std::vector< int32_t >	buffer_t

Private Attributes
uint32_t	mNumChannels
uint32_t	mNumSamplesPerChannelPerPacket
buffer_t	mMixerBuffer
uint64_t	mNextPacketTime

Detailed Description

Mixes PCM audio samples. This is a simple class with many assumptions. Do not try and use it with more than 2 audio layers.

Member Typedef Documentation

buffer_t

typedef std::vector<int32_t> ttv::broadcast::PcmAudioMixer::buffer_t

private

Constructor & Destructor Documentation

PcmAudioMixer()

ttv::broadcast::PcmAudioMixer::PcmAudioMixer	(	uint32_t	numChannels,
		uint32_t	numSamplesPerChannelPerPacket
	)

~PcmAudioMixer()

virtual ttv::broadcast::PcmAudioMixer::~PcmAudioMixer ( )

virtual

Member Function Documentation

GetNextPacketTime()

TTV_ErrorCode ttv::broadcast::PcmAudioMixer::GetNextPacketTime

(

uint64_t &

nextPacketTime

)

const

GetPacket()

TTV_ErrorCode ttv::broadcast::PcmAudioMixer::GetPacket	(	int16_t *	buffer,
		uint64_t &	nextPacketTime
	)

Retrieves the mixed audio. The size of the returned packet will be the same as the numSamplesPerChannelPerPacket value the class was created with.

SubmitAudioSamples()

TTV_ErrorCode ttv::broadcast::PcmAudioMixer::SubmitAudioSamples	(	const int16_t *	data,
		uint64_t	startTime,
		size_t	length,
		float	volume
	)

Member Data Documentation

mMixerBuffer

buffer_t ttv::broadcast::PcmAudioMixer::mMixerBuffer

private

mNextPacketTime

uint64_t ttv::broadcast::PcmAudioMixer::mNextPacketTime

private

mNumChannels

uint32_t ttv::broadcast::PcmAudioMixer::mNumChannels

private

mNumSamplesPerChannelPerPacket

uint32_t ttv::broadcast::PcmAudioMixer::mNumSamplesPerChannelPerPacket

private

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

• modules/broadcast/broadcast_common/include/twitchsdk/broadcast/internal/pcmaudiomixer.h