Prosody RTP processing: API: sm_vmptx_config_codec_comfort_noise

Prototype Definition

int sm_vmptx_config_codec_comfort_noise(struct sm_vmptx_codec_comfort_noise_parms *codecp)

Parameters

a structure of the following type:

typedef struct sm_vmptx_codec_comfort_noise_parms {
	tSMVMPtxId vmptx;					/* in */
	tSM_INT payload_type;					/* in */
} SM_VMPTX_CODEC_COMFORT_NOISE_PARMS;

Description

Configures the comfort noise codec. This codec is only used if the main codec for the VMP[tx] has been set to use RFC 3389 comfort noise. For example, the A-law codec is configured to use comfort noise with sm_vmptx_config_codec_alaw(), by specifying a VADmode of kSMVMPTxVADModeComfortNoise.

Fields

vmptx: The VMP[tx] 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.

Returns

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

ERR_SM_DEVERR - device error

This function is part of the Prosody RTP processing API.