advancedaudiopacket.h File Reference

#include "tdsystem.h"
#include "mediainfo.h"
#include "audioquality.h"

Go to the source code of this file.

Classes
struct	AdvancedAudioPacket
	Advanced Audio Packet. More...
Enumerations
enum	AdvancedAudioFlags {   AAF_ChannelLeft = (1 << 0), AAF_ChannelRight = (1 << 1), AAF_ByteUpper = (1 << 2), AAF_ByteLower = (1 << 3),   AAF_MediaInfo = (1 << 4) }
Functions
struct AdvancedAudioPacket	__attribute__ ((packed))
	AdvancedAudioPacket ()
void	translate ()
void	reset ()
static AudioQuality	calculateQualityForLimits (const AudioQualityInterface &userSetting, const AudioQualityInterface &inputQuality, const card64 totalByteRateLimit, const card64 byteRateLimitL1, const card64 byteRateLimitL2, const card64 byteRateLimitL3, const cardinal networkQualityDecrement, const cardinal headerSize, const cardinal maxPacketSize)
static cardinal	calculateFrameSize (const cardinal inputBytesPerSecond, const cardinal inputFrameSize)
static cardinal	calculateLayers (const AudioQualityInterface &quality)
Variables
static const card16	AdvancedAudioTypeID = 0x2961
static const char	AdvancedAudioTypeName []
static const card32	AdvancedAudioFormatID = 0x74660000 | AdvancedAudioTypeID
static const cardinal	AdvancedAudioMediaInfoPacketsPerSecond = 2
static const cardinal	AdvancedAudioFramesPerSecond = 35
static const cardinal	AdvancedAudioFrameSize
static const cardinal	AdvancedAudioMaxTransferDelay = 100 * 16
static const cardinal	AdvancedAudioMaxQualityLayers = 3
static const cardinal	AdvancedAudioQualityLevels = AudioQuality::QualityLevels
card32	FormatID
card16	SamplingRate
card8	Channels
card8	Bits
card64	Position
card64	MaxPosition
card8	ErrorCode
card8	Flags
card16	Fragment
char	Data [0]

---

Enumeration Type Documentation

enum AdvancedAudioFlags

Emumeration of Flags.

Enumerator:

AAF_ChannelLeft
AAF_ChannelRight
AAF_ByteUpper
AAF_ByteLower
AAF_MediaInfo

---

Function Documentation

struct AdvancedAudioPacket __attribute__

(

(packed)

)

__attribute__::AdvancedAudioPacket

(

)

Constructor.

static cardinal __attribute__::calculateFrameSize	(	const cardinal	inputBytesPerSecond,
		const cardinal	inputFrameSize
	)		[static]

Calculate output frame size from given input bytes per second and input frame size.

Parameters:

inputBytesPerSecond	Input source's bytes per second.
inputFrameSize	Input source's frame size.

Returns:

The calculated frame size.

static cardinal __attribute__::calculateLayers

(

const AudioQualityInterface &

quality

)

[static]

Calculate number of layers for given quality.

Parameters:

quality

Quality.

Returns:

Number of layers.

static AudioQuality __attribute__::calculateQualityForLimits	(	const AudioQualityInterface &	userSetting,
		const AudioQualityInterface &	inputQuality,
		const card64	totalByteRateLimit,
		const card64	byteRateLimitL1,
		const card64	byteRateLimitL2,
		const card64	byteRateLimitL3,
		const cardinal	networkQualityDecrement,
		const cardinal	headerSize,
		const cardinal	maxPacketSize
	)		[static]

Quality calculation for given user quality limited by input quality, byte rate and network quality decrement with given header size (eg. IP + UDP + RTP) and maximum packet size.

Parameters:

userSetting	User's quality setting.
inputQuality	Input source's quality.
byteRateLimit	Byte rate limit.
byteRateLimitL1	Layer #0 byte rate limit.
byteRateLimitL2	Layer #1 byte rate limit.
byteRateLimitL3	Layer #2 byte rate limit.
networkQualityDecrement	Number of steps for decrement of user's quality.
headerSize	Header size (eg. IP + UDP + RTP). AdvancedAudioPacket size is added automatically.
maxPacketSize	Maximum packet size.

Returns:

The calculated quality.

void __attribute__::reset

(

)

Reset report.

void __attribute__::translate

(

)

Translate byte order.

---

Variable Documentation

const card32 AdvancedAudioFormatID = 0x74660000 | AdvancedAudioTypeID [static]

Advanced Audio Encoding package format ID.

const cardinal AdvancedAudioFrameSize [static]

Initial value:

      44100 * 2 * 2 / AdvancedAudioFramesPerSecond

Advanced Audio frame size.

const cardinal AdvancedAudioFramesPerSecond = 35 [static]

Advanced Audio frames per second.

const cardinal AdvancedAudioMaxQualityLayers = 3 [static]

Advanced Audio maximum quality layers.

const cardinal AdvancedAudioMaxTransferDelay = 100 * 16 [static]

Advanced Audio maximum transfer delay.

const cardinal AdvancedAudioMediaInfoPacketsPerSecond = 2 [static]

Advanced Audio MediaInfo packets per second.

const cardinal AdvancedAudioQualityLevels = AudioQuality::QualityLevels [static]

Advanced Audio quality levels.

const card16 AdvancedAudioTypeID = 0x2961 [static]

Type ID for Advanced Audio Encoding.

const char AdvancedAudioTypeName[] [static]

Name for Advanced Audio Encoding.

card8 Bits

Number of audio bits.

card8 Channels

Number of audio channels.

char Data

Packet data.

card8 ErrorCode

Error code.

card8 Flags

Advanced Audio Encoding Flags.

card32 FormatID

Packet format ID.

card16 Fragment

Fragment number.

card64 MaxPosition

Maximum position in nanoseconds.

card64 Position

Current position in nanoseconds.

card16 SamplingRate

Audio sampling rate.