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Some code changes to allow for potential negative frames placement for audio

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This woud allow audio to be placed in negative frames, which essentially means that audio would start before the first frame. This is not yet supported, however, because I don't know how to make it work with FFMPEG.
This commit is contained in:
Emmanouil Papadeas 2024-12-14 00:25:57 +02:00
parent 710f6d41e6
commit a150b66fe7
3 changed files with 18 additions and 6 deletions
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7
src/Classes/Frame.gd
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@ -22,8 +22,11 @@ func position_in_seconds(project: Project, start_from := 0) -> float:
var index := project.frames.find(self)
if index > start_from:
for i in range(start_from, index):
var frame := project.frames[i]
pos += frame.get_duration_in_seconds(project.fps)
if i >= 0:
var frame := project.frames[i]
pos += frame.get_duration_in_seconds(project.fps)
else:
pos += 1.0 / project.fps
else:
if start_from >= project.frames.size():
return -1.0

9
src/Classes/Layers/AudioLayer.gd
View file

@ -13,8 +13,13 @@ var audio: AudioStream: ## The audio stream of the layer.
audio_changed.emit()
var playback_position := 0.0: ## The time in seconds where the audio stream starts playing.
get():
var frame := project.frames[playback_frame]
return frame.position_in_seconds(project)
if playback_frame >= 0:
var frame := project.frames[playback_frame]
return frame.position_in_seconds(project)
var pos := 0.0
for i in absi(playback_frame):
pos -= 1.0 / project.fps
return pos
var playback_frame := 0: ## The frame where the audio stream starts playing.
set(value):
playback_frame = value

8
src/UI/Timeline/LayerButton.gd
View file

@ -76,7 +76,11 @@ func _on_cel_switched() -> void:
audio_player.stop()
return
if animation_running:
if Global.current_project.current_frame == layer.playback_frame:
var current_frame := Global.current_project.current_frame
if (
current_frame == layer.playback_frame
or (current_frame == 0 and layer.playback_frame < 0)
):
_play_audio(false)
else:
_play_audio(true)
@ -90,7 +94,7 @@ func _on_animation_started(_dir: bool) -> void:
func _on_animation_looped() -> void:
var layer := Global.current_project.layers[layer_index]
if layer is AudioLayer:
if layer.playback_frame != 0 or not layer.is_visible_in_hierarchy():
if layer.playback_frame > 0 or not layer.is_visible_in_hierarchy():
if is_instance_valid(audio_player):
audio_player.stop()