Hi Mark
Current "DVC Out Ramp Period" wants to have direct value of register. But, upstream want to have time like this ?
Yes, please - much easier for users.
OK, will try again
000: 1 time ... 031: 0.5 time ... 3FE: 4.1 x 10^-7 time 3FF: Mute
Maybe I can used inverted value for it ?
That sounds like it'd address part of it, though I'm still not 100% sure what the effect of this control is - is it the final value or something (0.5*programmed volume for example)?
In easy explain, we can set "Volume Ramp Period" (= it will be "time" instead), and "Volume scale". see below...
/* * we already have default Volume here. * I use it as "volume X" */
/* * This sample want to use "Volume Up" * Mute -> volume X */
/* * target volume for "start" is Mute. * volume X x 0 time = volume 0 */ amixer set "DVC Out Ramp" 0% // Mute as default
/* * We want to Volume up in 15sec */ amixer set "DVC Out Ramp Period" 15000
/* * Start sound playback with Volume Ramp */ amixer set "DVC Out Ramp Enable" on aplay xxx.wav &
/* * Volume up. Mute -> volume X * Current Volume = Mute = * volume X x 0 time = volume 0 * Set next target volume * volume X x 1 time = volume X */ amixer set "DVC Out Ramp" 100% // to Volume 100%
/* * Back to Mute again * Current Volume = * volume X x 1 time = volume X * Set next target volume * volume X x 0 time = volume 0 */ amixer set "DVC Out Ramp" 0% // to Mute
Best regards --- Kuninori Morimoto