Warning: Can't synchronize with the repository (Unsupported version control system "svn": "/usr/lib64/libsvn_ra_neon-1.so.0: undefined symbol: svn_compat_wrap_file_rev_handler" ). Look in the Trac log for more information.

The v3_codec structure is defined as follows: 

typedef struct __v3_codec {
    uint8_t codec;          // The codec id
    uint8_t format;         // The codec format
    uint32_t pcmframesize;  // The number of PCM *bytes* as samples stored in a single frame
    uint32_t rate;          // The PCM rate in Hz
    uint8_t quality;        // The quality level for Speex
    char name[128];         // The name of the codec
} v3_codec;

For codec and format values, see lv3_codecs