-VLC_EXPORT( int, aout_FormatNbChannels, ( audio_sample_format_t * p_format ) );
-void aout_FormatPrepare( audio_sample_format_t * p_format );
-void aout_FifoInit( aout_instance_t *, aout_fifo_t *, u32 );
+VLC_EXPORT( unsigned int, aout_FormatNbChannels, ( const audio_sample_format_t * p_format ) );
+VLC_EXPORT( void, aout_FormatPrepare, ( audio_sample_format_t * p_format ) );
+VLC_EXPORT( void, aout_FormatPrint, ( aout_instance_t * p_aout, const char * psz_text, const audio_sample_format_t * p_format ) );
+VLC_EXPORT( void, aout_FormatsPrint, ( aout_instance_t * p_aout, const char * psz_text, const audio_sample_format_t * p_format1, const audio_sample_format_t * p_format2 ) );
+VLC_EXPORT( const char *, aout_FormatPrintChannels, ( const audio_sample_format_t * ) );
+void aout_FifoInit( aout_instance_t *, aout_fifo_t *, uint32_t );