Copyright © 2006-2018 MultiMedia Soft

StartFromMemoryRaw method

Previous pageReturn to chapter overviewNext page

Remarks

 

Starts a new recording session from a sound file in RAW format contained inside a memory buffer.

 

A successful call to this method will fire the RecordingStarted event followed by a number of RecordingPerc events and finally by the RecordingStopped event.

 

For details about recording from files see the How to record from files, memory or clipboard section.

 

 

Syntax

 

[Visual Basic]

control.StartFromMemoryRaw (

strOutputPath as string,

pBuffer as variant,

nBufferLen as long,

nEncodeMode as enumRAWEncodeModes,

bIsBigEndian as enumBoolean,

nFrequency as Long,

nChannels as Long

) as enumErrorCodes


 

[C++]

short control.StartFromMemoryRaw (

LPCTSTR strOutputPath,

const VARIANT FAR& pBuffer,

long nBufferLen,

short nEncodeMode,

short bIsBigEndian,

long nFrequency,

long nChannels

);


 

 

Parameter

Description

 

 

strOutputPath

String representing the absolute pathname of the output file that will contain the recorded data. If this pathname should contain invalid characters, they would be automatically changed into an underscore '_' character..

If the string is left empty, the recording session will be performed in memory.

pBuffer

Input buffer containing the original sound

nBufferLen

Length of the input buffer expressed in bytes

nEncodeMode

Encode mode used to encode the RAW file.

Supported values are the following:

Mnemonic constant

Value

Meaning

RAW_ENCODE_PCM_U8

0

RAW PCM 8 bits Unsigned

RAW_ENCODE_PCM_S8

1

RAW PCM 8 bits Signed

RAW_ENCODE_PCM_S16

2

RAW PCM 16 bits Signed

RAW_ENCODE_PCM_S24

3

RAW PCM 24 bits Signed

RAW_ENCODE_PCM_S32

4

RAW PCM 32 bits Signed

RAW_ENCODE_FLOAT32

5

RAW 32 bits floating point

RAW_ENCODE_G711_ULAW

6

RAW G711 U-LAW

RAW_ENCODE_G711_ALAW

7

RAW G711 A-LAW

RAW_ENCODE_GSM_610

8

RAW GSM 6.10

RAW_ENCODE_DIALOGIC_VOX

9

RAW Dialogic ADPCM VOX

bIsBigEndian

Boolean flag that specifies if bits order inside the RAW file are little-endian or big-endian

Supported values are the following:

Mnemonic Value

Meaning

false

The RAW file is encoded using little-endian

true

The RAW file is encoded using big-endian

nFrequency

Sample rate of the RAW file (e.g. 44100)

nChannels

Number of channels of the RAW file: 1 for Mono or 2 for Stereo

 

 

 

Return value

 

Value

Meaning

 

 

Negative value

An error occurred, check the LastError property value in order to see the error code meaning

enumErrorCodes.ERR_NOERROR (0)

The method call was successful.