Regarding G729 integration in pjsip

Question

I am querying on this because I am not a C expert .See if any one who has worked around it could help.I am integrating g729 in pjsip lib and I got g729 codec files from here .Here are I steps I have followed :

First I have registered g729 in 'pjmedia/src/pjmedia-codec/audio_codecs.c' by putting this

#if PJMEDIA_HAS_G729_CODEC
    /* Register G729 */
    status = pjmedia_codec_g729_init(endpt);
    if (status != PJ_SUCCESS){

    return status;
     }
#endif

Now I have two files 'pj_g729.c' and 'pj_g729.h' that I have to copy in pjsip lib as per my knowledge. So I have copied 'pj_g729.c' in 'pjmedia/src/pjmedia-codec' & 'pj_g729.h' in '/root/pjsip/trunk_2_allloweversionsuccess_and_widssl_g729/pjmedia/include/pjmedia-codec'.

After doing this I am running make it is giving error :' undefined reference at status = pjmedia_codec_g729_init(endpt);'.

Also I have doubt about 'PJMEDIA_HAS_G729_CODEC' as I haven't find this variable declared in library.So do I have to declare it ??I am struggling over it for a long time.Any help will be appreciable.

Answer 1

您可以按照g7221在pjsip中的添加步骤进行操作。查找g722中提到的文件，并为g729编解码器添加额外的行。您可以将g729.a文件粘贴到pjsip的第三方库中。

Answer 2

From the fact that the compiler sees the line with the error, it follows that PJMEDIA_HAS_G729_CODEC is in fact defined somewhere. Otherwise the line would have been skipped outright.

The problem is that in C, header files must be #include d to declare functions. This connects two source files. Here audio_codecs.c and pj_g729.c should both include pj_g729.h .

Answer 3

You need to include pj_g729.h into pjmedia-codec.h .

#include <pjmedia-codec/pj_g729.h>

This will include g729 header file into pjmedia-codec.h header and will avoid the error of undefined reference at status = pjmedia_codec_g729_init(endpt);'.