There are 4 Capture Volume/Switch (Front, Surround, Synth and Wave) and Capture source of ac97 codec contain 8 input sources (Mic, CD, Video , Aux, Line, Stereo Mix, Mono Mix and Phone) on SB Live! Platinum

How can ALSA application know whether all 12 sources can be selected for device 0 ?

card 1: Live [SB Live! Platinum [CT4760P]], device 0: emu10k1 [ADC Capture/Standard PCM Playback] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Live [SB Live! Platinum [CT4760P]], device 1: emu10k1 mic [Mic Capture] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Live [SB Live! Platinum [CT4760P]], device 2: emu10k1 efx [Multichannel Capture/PT Playback] Subdevices: 1/1 Subdevice #0: subdevice #0