Remarks
Starts a new recording session from a queue filled with raw PCM audio data. The queue can be filled in real time using the SendDataToQueueRaw method.
When using this method to start a recording session, the EncodeFormats.ResampleMode property must be set to RESAMPLE_MODE_CUSTOM_FORMAT.
A successful call to this method causes the container application to be notified through the CallbackForRecordersEvents delegate invoked with the nEvent parameter set to EV_REC_START
For details about the encoding format and parameters applied during recording see the How to perform a recording session section.
Syntax
[Visual Basic]
Public Function StartFromQueueRaw (
strOutputPath as string
nEncodeMode as enumRAWEncodeModes,
bIsBigEndian as Boolean,
nFrequency as Int32,
nChannels as Int32
) as enumErrorCodes
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Parameter
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Description
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strOutputPath
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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.
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nEncodeMode
|
Encode mode used to encode RAW audio data.
Supported values are the following:
Mnemonic constant
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Value
|
Meaning
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RAW_ENCODE_PCM_U8
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0
|
RAW PCM 8 bits Unsigned
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RAW_ENCODE_PCM_S8
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1
|
RAW PCM 8 bits Signed
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RAW_ENCODE_PCM_S16
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2
|
RAW PCM 16 bits Signed
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RAW_ENCODE_PCM_S24
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3
|
RAW PCM 24 bits Signed
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RAW_ENCODE_PCM_S32
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4
|
RAW PCM 32 bits Signed
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RAW_ENCODE_FLOAT32
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5
|
RAW 32 bits floating point
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RAW_ENCODE_G711_ULAW
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6
|
RAW G711 U-LAW
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RAW_ENCODE_G711_ALAW
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7
|
RAW G711 A-LAW
|
RAW_ENCODE_GSM_610
|
8
|
RAW GSM 6.10
|
RAW_ENCODE_DIALOGIC_VOX
|
9
|
RAW Dialogic ADPCM VOX
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|
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
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Meaning
|
false
|
The RAW file is encoded using little-endian
|
true
|
The RAW file is encoded using big-endian
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nFrequency
|
Sample rate of RAW audio data (e.g. 44100)
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nChannels
|
Number of channels of RAW audio data: 1 for Mono or 2 for Stereo
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Return value
Value
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Meaning
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Negative value
|
An error occurred. Check the LastError property value in order to see the last error.
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enumErrorCodes.ERR_NOERROR (0)
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The method call was successful.
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