Remarks
Loads a sound from a file in RAW format..
You can manage how loaded sound will be added to the existing editing session through a previous call to the SetLoadingMode method.
You can limit the range of sound data that will be loaded from the given sound file with a previous call to the SetLoadingRange method.
Multi-channel formats are supported natively when the MultiChannelLoadingModeSet method has been invoked with the nMode parameter set to MULTICHAN_DOWNMIX_NONE while in other cases will be converted to stereo during the loading procedure.
In case you should need loading a specific single channel of the raw audio file, use the LoadSoundChannelFromRawFile method.
During the execution of the loading session the CallbackPercentage delegate is invoked, with the nOperation parameter set to OPERATION_SOUND_LOADING, in order to notify about the percentage of advancement of the loading session.
For further details about callback delegates see the How to synchronize the container application with the API tutorial.
Syntax
[Visual Basic]
Public Function LoadSoundFromRawFile (
strPathname as String,
nEncodeMode as enumRAWEncodeModes,
bIsBigEndian as Boolean,
nFrequency as Int32,
nChannels as Int32
) as enumErrorCodes
|
|
Parameter
|
Description
|
|
|
strPathname
|
String representing the absolute pathname of the input file.
|
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:
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: for example, 1 for Mono or 2 for Stereo, 6 for 5.1 formats and so on
|
Return value
Value
|
Meaning
|
|
|
Negative value
|
An error occurred. Check the LastError property value in order to see the last error.
|
enumErrorCodes.ERR_NOERROR (0)
|
The method call was successful.
|
|
