Simplify pre-roll handling

[suterma]

Proposal:

• Pre-roll should generally only occur when a cue is interactively invoked.

• Fading should generally occur when a cue or play/pause is interactively invoked.

• Pre-roll and fading is not applied during seek operations.

• Pre-roll and fading should not occurr on loops or other automated playback (cue loop, track loop, play all etc...)

• TBD: Fading should not occurr on the beginning of a track (when the playback position is less than the fade-in duration away)

• Pre-roll is also applied at the beginning of a track (resulting in a pause before playback)

• Fade-In/Out duration and the extra pre-roll for the fading can be set globally only

• Pre-Roll duration can be defined globally and at the track level

• Pre-Roll can be disabled for each cue specifically (Should this also disable fading?)

[suterma]

User comment:

Ich fände es optimal, wenn der Single-Cue Repeat Mode so funktioniert, dass es zwar den Pre-Roll macht (den braucht man ja meistens für den sauberen Einstieg), dass dieser sowie das Fade-In bei der Wiederholung aber wegfallen. Aber das wäre wohl eine grössere Geschichte.

Und wenn man eben den einzelnen Cues einen Pre-Roll zuordnen kann oder nicht, dann könnte man es so eingeben, dass beim Intro oder dem Interlude kein Pre-Roll ist.

Eventuell könnte man im Edit pro Cue ein “Apply-Pre-Roll” Checkbox machen. Im Play-Modus wird dann für diejenigen Cues, welche dann effektiv ein Preroll haben, ein entsprechendes Icon angezeigt. Ich finde es einfach wichtig, dass sich der Benutzer im klaren ist, bevor er den Button drückt, ob ein Preroll stattfindet oder nicht.

[suterma]

Fading on cue and loops have already been addressed here:

• Add fade-in and fade-out support #56
• Looping should not trigger a fade operation #57

This issue will now only address pre-roll.

[suterma]

Pre-Roll handling specification:

• Pre-roll should generally only occur when a cue is interactively invoked.

• Pre-roll is also applied at the beginning of a track (resulting in a pause before playback)

• Extra pre-roll for the any fading operation can be set globally only (already implemented)

• Pre-roll is not applied during seek operations.

• Pre-roll should not occurr on loops or other automated playback (cue loop, track loop, play all etc...)

• Pre-Roll duration can be defined globally and at the track level (which overrides the global setting)

• Pre-Roll can be disabled for each cue specifically