Путь: Toys/Other, команды версии: Ver.4 Ver.9 mix Комментарии в файле mix.c :
Исходный текст в файле mix.c #define FOR_mix #include "toys.h" #include <linux/soundcard.h> GLOBALS( long r, l; char *d, *c; ) void mix_main(void) { const char *channels[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES; int mask, channel = -1, level, fd; if (!TT.d) TT.d = "/dev/mixer"; fd = xopen(TT.d, O_RDWR|O_NONBLOCK); xioctl(fd, SOUND_MIXER_READ_DEVMASK, &mask); for (channel = 0; channel < SOUND_MIXER_NRDEVICES; channel++) { if ((1<<channel) & mask) { if (TT.c) { if (!strcmp(channels[channel], TT.c)) break; } else if (toys.optflags & FLAG_l) break; else printf("%s\n", channels[channel]); } } if (!(toys.optflags & (FLAG_c|FLAG_l))) return; else if (channel == SOUND_MIXER_NRDEVICES) error_exit("bad -c '%s'", TT.c); if (!(toys.optflags & FLAG_l)) { xioctl(fd, MIXER_READ(channel), &level); if (level > 0xFF) xprintf("%s:%s = left:%d\t right:%d\n", TT.d, channels[channel], level>>8, level & 0xFF); else xprintf("%s:%s = %d\n", TT.d, channels[channel], level); } else { level = TT.l; if (!(toys.optflags & FLAG_r)) level = TT.r | (level<<8); xioctl(fd, MIXER_WRITE(channel), &level); } if (CFG_TOYBOX_FREE) close(fd); } |