Dialogic 05-2548-006 manual Ipmaudiocoderoptionsinfo

IPM_AUDIO_CODER_OPTIONS_INFO

typedef struct ipm_audio_coder_options_info_tag

{

unsigned int unVersion; unsigned int unCoderOptions; unsigned int unParm1;

int nValue1; unsigned int unParm2; int nValue2;

} IPM_AUDIO_CODER_OPTIONS_INFO;

„Description

This data structure provides additional options when using AMR, EVRC, and QCELP audio coders. For information about QCELP (available as of Service Update 80), see Section 1.5, “Support for QCELP Codec”, on page 9.

Note: All unused fields in the IPM_AUDIO_CODER_OPTIONS_INFO structure must be set to 0.

„Field Descriptions

The fields of the IPM_AUDIO_CODER_OPTIONS_INFO data structure are described as follows:

Note: For EVRC, where the media type is MEDIATYPE_AUDIO_LOCAL_CODER_OPTIONS_INFO, all field values are ignored by the firmware.

unVersion

set to IPM_AUDIO_CODER_OPTIONS_INFO_VERSION

unCoderOptions

For AMR coders where the media type is

MEDIATYPE_AUDIO_LOCAL_CODER_OPTIONS_INFO, valid values are:

•CODER_OPT_AMR_EFFICIENT - Minimize the amount of network bandwidth or

CODER_OPT_AMR_OCTET - Make packet parsing easier for the AMR application

For AMR coders where the media type is

MEDIATYPE_AUDIO_REMOTE_CODER_OPTIONS_INFO, valid values that can be ORed together are:

•CODER_OPT_AMR_EFFICIENT (see description above) or

CODER_OPT_AMR_OCTET (see description above)

•CODER_OPT_AMR_CMR_TRACK - Specify that the transmit bit rate should follow the CMR value in the received packet

or

CODER_OPT_AMR_CMR_LIMIT - Specify that the transmit bit rate should follow the CMR value in the received packet with a maximum value specified by the preferred bit rate.

For EVRC, set to CODER_OPT_SIGNALING_OFF.

30Dialogic® Multimedia Software for ATCA Release 1.0 Release Update, Rev 06 — January 23, 2008 Dialogic Corporation