Prosody RTP processing: API: sm_vmprx_config_codec_ilbc

Prototype Definition

int sm_vmprx_config_codec_ilbc(struct sm_vmprx_codec_ilbc_parms *codecp)

Parameters

*codecp
a structure of the following type: 
typedef struct sm_vmprx_codec_ilbc_parms {
	tSMVMPrxId vmprx;					/* in */
	tSM_INT payload_type;					/* in */
	tSM_INT frame_len;					/* in */
	tSM_INT enhancer;					/* in */
	enum kSMPLCMode plc_mode;				/* in */
} SM_VMPRX_CODEC_ILBC_PARMS;

Description

Configures the VMP[rx] to use the iLBC codec, setting the payload type mapping to payload_type. This supersedes any previous mapping that was in effect for this codec.

If the call completes successfully, RTP packets arriving at the VMP[rx] with a payload type that matches the specified payload type will be decoded using this codec.

This requires the module ilbc to have been downloaded.

Fields

vmprx
The VMP[rx] to which to add the codec
payload_type
The payload type identifer to use with this codec (see IETF RFC 3550 section 13). Supplying a value of -1 will remove any payload type configuration from the codec preventing its use.
frame_len
Length of each frame which will be received, in milliseconds. This must be either 20 or 30.
enhancer
Configures whether or not to use an enhancer. It is used if this value is non-zero.
plc_mode
Enables or disables PLC (packet loss concealment) as appropriate for the codec. Note the codec implementation may not allow PLC to be disabled. One of these values:
kSMPLCModeDisabled
PLC Disabled
kSMPLCModeEnabled
PLC Enabled

Returns

0 if call completed successfully, otherwise a standard error such as:

This function is part of the Prosody RTP processing API.