Process audio data compressed with ALaw. More...

Inheritance diagram for Burger::DecompressALaw:

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Collaboration diagram for Burger::DecompressALaw:

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Public Member Functions
const Burger::StaticRTTI *	get_StaticRTTI (void) const noexcept override
	Get the description to the class.

	DecompressALaw ()
	Default constructor.

eError	Reset (void) override
	Resets the decompresser to defaults.

eError	Process (void pOutput, uintptr_t uOutputChunkSize, const void pInput, uintptr_t uInputChunkLength) override
	Decompress audio data using alaw.

Public Member Functions inherited from Burger::DecompressAudio
const Burger::StaticRTTI *	get_StaticRTTI (void) const noexcept override
	Get the description to the class.

SoundManager::eDataType	GetDataType (void) const
	Returns the uncompressed data type this codec will output.

void	SetMono (void)
	Alert the decompression codec to create a single audio channel.

void	SetStereo (void)
	Alert the decompression codec to create stereo channels.

uint_t	IsStereo (void) const
	Obtain the stereo/mono state of the decompresser.

Public Member Functions inherited from Burger::Decompress
	Decompress (void)
	Default constructor.

uintptr_t	GetTotalInputSize (void) const noexcept
	Get the total processed input data in bytes.

uintptr_t	GetTotalOutputSize (void) const noexcept
	Get the total processed output data in bytes.

uintptr_t	GetProcessedInputSize (void) const noexcept
	Get the total processed output data in bytes from the last process pass.

uintptr_t	GetProcessedOutputSize (void) const noexcept
	Get the total processed output data in bytes from the last process pass.

uint32_t	GetSignature (void) const noexcept
	Return the signature for this decompressor.

Public Member Functions inherited from Burger::Base
const char *	get_class_name (void) const noexcept
	Get the name of the class.

virtual	~Base () noexcept=default
	Destructor.

Static Public Member Functions
static DecompressALaw *	New (void)
	Allocate and initialize a DecompressALaw.

Static Public Attributes
static const Burger::StaticRTTI	g_StaticRTTI
	The global description of the class.

static const int16_t	g_Table [256]
	ALaw decompression lookup table.

static const uint32_t	Signature = 0x616C6177
	'alaw'

Static Public Attributes inherited from Burger::DecompressAudio
static const Burger::StaticRTTI	g_StaticRTTI
	The global description of the class.

Static Public Attributes inherited from Burger::Decompress
static const Burger::StaticRTTI	g_StaticRTTI
	The global description of the class.

Static Public Attributes inherited from Burger::Base
static const Burger::StaticRTTI	g_StaticRTTI
	The global description of the class.

Protected Types
enum	eState { STATE_INIT , STATE_CACHEFULL }

Protected Attributes
uint_t	m_uCacheSize
	Number of valid bytes in m_uCache.

eState	m_eState
	State of the decompression.

int16_t	m_iCache
	Temp uncompressed data buffer.

Protected Attributes inherited from Burger::DecompressAudio
SoundManager::eDataType	m_eDataType
	Data type the decompresser will create.

uint_t	m_bStereo
	TRUE if data is stereo

Protected Attributes inherited from Burger::Decompress
uintptr_t	m_uTotalInput
	Total number of bytes processed for input.

uintptr_t	m_uTotalOutput
	Total number of bytes processed for output.

uintptr_t	m_uInputLength
	Number of input bytes processed from the last call to Process()

uintptr_t	m_uOutputLength
	Number of output bytes processed from the last call to Process()

uint32_t	m_uSignature
	4 character code to identify this decompresser

Additional Inherited Members
Protected Member Functions inherited from Burger::DecompressAudio
	DecompressAudio (SoundManager::eDataType uDataType)
	Constructor.

Detailed Description

Process audio data compressed with ALaw.

Convert audio data compressed with ALaw to native 16 bit format

See also: DecompressULaw, Decompress and DecompressAudio

Member Enumeration Documentation

◆ eState

enum Burger::DecompressALaw::eState

protected

Enumerator
STATE_INIT	Basic state.
STATE_CACHEFULL	Cache is full, need to output before more input.

Constructor & Destructor Documentation

◆ DecompressALaw()

Burger::DecompressALaw::DecompressALaw ( )

Default constructor.

Initializes the defaults

Member Function Documentation

◆ get_StaticRTTI()

const Burger::StaticRTTI * Burger::DecompressALaw::get_StaticRTTI ( void ) const

overridevirtualnoexcept

Get the description to the class.

This virtual function will pull the pointer to the StaticRTTI instance that has the name of the class. Due to it being virtual, it will be the name of the most derived class.

Returns: Pointer to a global, read only instance of StaticRTTI for the true class

Reimplemented from Burger::Decompress.

◆ New()

Burger::DecompressALaw *BURGER_API Burger::DecompressALaw::New ( void )

static

Allocate and initialize a DecompressALaw.

Returns: A pointer to a default DecompressALaw class or NULL if out of memory

See also: Delete(const T *)

◆ Process()

Burger::eError Burger::DecompressALaw::Process	(	void *	pOutput,
		uintptr_t	uOutputChunkLength,
		const void *	pInput,
		uintptr_t	uInputChunkLength )

overridevirtual

Decompress audio data using alaw.

Input data is assumed to be alaw compressed bytes.

Parameters

pOutput	Pointer to the buffer to accept the decompressed data
uOutputChunkLength	Number of bytes in the output buffer
pInput	Pointer to data to decompress
uInputChunkLength	Number of bytes in the data to decompress

Returns: Decompress::eError code with zero if no failure, non-zero is an error code

Implements Burger::Decompress.

◆ Reset()

Burger::eError Burger::DecompressALaw::Reset ( void )

overridevirtual

Resets the decompresser to defaults.

Returns: kErrorNone if successful

Implements Burger::Decompress.

Member Data Documentation

◆ g_StaticRTTI

const Burger::StaticRTTI Burger::DecompressALaw::g_StaticRTTI

static

The global description of the class.

This record contains the name of this class and a reference to the parent

◆ g_Table

const int16_t Burger::DecompressALaw::g_Table

static

Initial value:

= {-5504, -5248, -6016,
    -5760, -4480, -4224, -4992, -4736, -7552, -7296, -8064, -7808, -6528, -6272,
    -7040, -6784, -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368, -3776,
    -3648, -4032, -3904, -3264, -3136, -3520, -3392, -22016, -20992, -24064,
    -23040, -17920, -16896, -19968, -18944, -30208, -29184, -32256, -31232,
    -26112, -25088, -28160, -27136, -11008, -10496, -12032, -11520, -8960,
    -8448, -9984, -9472, -15104, -14592, -16128, -15616, -13056, -12544, -14080,
    -13568, -344, -328, -376, -360, -280, -264, -312, -296, -472, -456, -504,
    -488, -408, -392, -440, -424, -88, -72, -120, -104, -24, -8, -56, -40, -216,
    -200, -248, -232, -152, -136, -184, -168, -1376, -1312, -1504, -1440, -1120,
    -1056, -1248, -1184, -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
    -688, -656, -752, -720, -560, -528, -624, -592, -944, -912, -1008, -976,
    -816, -784, -880, -848, 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
    7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784, 2752, 2624, 3008, 2880,
    2240, 2112, 2496, 2368, 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
    22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944, 30208, 29184, 32256,
    31232, 26112, 25088, 28160, 27136, 11008, 10496, 12032, 11520, 8960, 8448,
    9984, 9472, 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568, 344,
    328, 376, 360, 280, 264, 312, 296, 472, 456, 504, 488, 408, 392, 440, 424,
    88, 72, 120, 104, 24, 8, 56, 40, 216, 200, 248, 232, 152, 136, 184, 168,
    1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184, 1888, 1824, 2016, 1952,
    1632, 1568, 1760, 1696, 688, 656, 752, 720, 560, 528, 624, 592, 944, 912,
    1008, 976, 816, 784, 880, 848}

ALaw decompression lookup table.

◆ m_eState

eState Burger::DecompressALaw::m_eState

protected

State of the decompression.

◆ m_iCache

int16_t Burger::DecompressALaw::m_iCache

protected

Temp uncompressed data buffer.

◆ m_uCacheSize

uint_t Burger::DecompressALaw::m_uCacheSize

protected

Number of valid bytes in m_uCache.

◆ Signature

const uint32_t Burger::DecompressALaw::Signature = 0x616C6177

static

'alaw'

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Types

Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ eState

Constructor & Destructor Documentation

◆ DecompressALaw()

Member Function Documentation

◆ get_StaticRTTI()

◆ New()

◆ Process()

◆ Reset()

Member Data Documentation

◆ g_StaticRTTI

◆ g_Table

◆ m_eState

◆ m_iCache

◆ m_uCacheSize

◆ Signature