Utility function to generate a \a pa_sample_spec and \a pa_channel_map corresponding to a given \a pa_format_info. The
* conversion for PCM formats is straight-forward. For non-PCM formats, if there is a fixed size-time conversion (i.e. all
* IEC61937-encapsulated formats), a "fake" sample spec whose size-time conversion corresponds to this format is provided and
* the channel map argument is ignored. For formats with variable size-time conversion, this function will fail. Returns a
* negative integer if conversion failed and 0 on success. \since 2.0
Utility function to generate a \a pa_sample_spec and \a pa_channel_map corresponding to a given \a pa_format_info. The * conversion for PCM formats is straight-forward. For non-PCM formats, if there is a fixed size-time conversion (i.e. all * IEC61937-encapsulated formats), a "fake" sample spec whose size-time conversion corresponds to this format is provided and * the channel map argument is ignored. For formats with variable size-time conversion, this function will fail. Returns a * negative integer if conversion failed and 0 on success. \since 2.0