rem: const char *StringForFormat(char *str, const media_format & format)
add: StringForFormat(char *buf, MixerInput *input)
context: const char *StringForFormat(char *str, const media_format & format){	char fmtstr[20];	const char *fmt;	switch (format.u.raw_audio.format) {		case media_raw_audio_format::B_AUDIO_FLOAT:			fmt = "float";			break;		case media_raw_audio_format::B_AUDIO_INT:			if (format.u.raw_audio.valid_bits != 0) {				sprintf(fmtstr, "%d bit", format.u.raw_audio.valid_bits);				fmt = fmtstr;			} else {				fmt = "32 bit";			}			break;		case media_raw_audio_format::B_AUDIO_SHORT:			fmt = "16 bit";			break;		case media_raw_audio_format::B_AUDIO_CHAR:			fmt = "8 bit";			break;		case media_raw_audio_format::B_AUDIO_UCHAR:			fmt = "8 bit unsigned";			break;		default:			fmt = "unknown";			break;	}	int a,b;	a = int(format.u.raw_audio.frame_rate + 0.05) / 1000;	b = int(format.u.raw_audio.frame_rate + 0.05) % 1000;	if (b)		sprintf(str, "%d.%d kHz %s", a, b / 100, fmt);	else		sprintf(str, "%d kHz %s", a, fmt);	return str;}