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API Reference Manual 3
Intel
®
IXP400 Digital Signal Processing (DSP) Software Version 2.5
Contents
1.0 Introduction ............................................................................................................ 7
1.1 General............................................................................................................ 7
1.2 Scope .............................................................................................................. 7
1.3 Audience ......................................................................................................... 7
1.4 Acronyms ........................................................................................................ 7
2.0 Architectural Overview ...................................................................................... 9
3.0 Media Processing Resource Components .............................................. 10
3.1 Network Endpoint Resource Component...................................................... 10
3.2 Decoder Resource Component..................................................................... 11
3.3 Encoder Resource Component..................................................................... 13
3.4 Tone Generation Resource Component ....................................................... 15
3.5 Tone Detection Resource Component.......................................................... 16
3.6 Audio Player Resource Component.............................................................. 17
3.7 Audio Mixer Resource Component ............................................................... 17
3.8 T.38 Fax Resource Component .................................................................... 18
3.9 Message Agent Resource Component ......................................................... 19
4.0 Message Format and Delivery Mechanism.............................................. 20
4.1 Message Functions ....................................................................................... 20
4.2 Message Header Format............................................................................... 21
4.3 Message Type List ........................................................................................ 22
5.0 Common Control Message............................................................................. 23
5.1 Reset Message ............................................................................................. 23
5.2 Start Message ............................................................................................... 23
5.3 Stop Message ............................................................................................... 24
5.4 Ping Message................................................................................................ 24
5.5 Set-Parameter Message ............................................................................... 24
5.6 Set-Multiple-Parameter Message.................................................................. 25
5.7 Get-Parameter Message............................................................................... 26
5.8 Get-Parameter Acknowledge Message......................................................... 26
5.9 Get-All-Parameters Message........................................................................ 26
5.10 Get-All-Parameters Acknowledge Message.................................................. 27
5.11 General-Acknowledge Message ................................................................... 27
5.12 Error Message............................................................................................... 28
5.13 Event Message.............................................................................................. 28
6.0 Resource-Specific Control Messages ....................................................... 29
6.1 CODEC Start Message ................................................................................. 29
6.2 CODEC Stop-Acknowledgement Message................................................... 29
6.3 Tone Generator Play Message ..................................................................... 30
6.4 Tone Generator Play-FSK Message ............................................................. 30
6.5 Tone Generator Play-Completed Message................................................... 31
6.6 Tone Detector Receive-Digit Message.......................................................... 31
6.7 Tone Detector Receive-Completed Message ............................................... 32