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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
import bpy
class SequencerCrossfadeSounds(bpy.types.Operator):
'''Do crossfading volume animation of two selected sound strips.'''
bl_idname = "sequencer.crossfade_sounds"
bl_label = "Crossfade sounds"
bl_register = True
bl_undo = True
def poll(self, context):
if context.scene and context.scene.sequence_editor and context.scene.sequence_editor.active_strip:
return context.scene.sequence_editor.active_strip.type == 'SOUND'
else:
return False
def execute(self, context):
seq1 = None
seq2 = None
for s in context.scene.sequence_editor.sequences:
if s.selected and s.type == 'SOUND':
if seq1 == None:
seq1 = s
elif seq2 == None:
seq2 = s
else:
seq2 = None
break
if seq2 == None:
self.report({'ERROR'}, "Select 2 sound strips.")
return {'CANCELLED'}
if seq1.start_frame_final > seq2.start_frame_final:
s = seq1
seq1 = seq2
seq2 = s
if seq1.end_frame_final > seq2.start_frame_final:
tempcfra = context.scene.current_frame
context.scene.current_frame = seq2.start_frame_final
seq1.keyframe_insert('volume')
context.scene.current_frame = seq1.end_frame_final
seq1.volume = 0
seq1.keyframe_insert('volume')
seq2.keyframe_insert('volume')
context.scene.current_frame = seq2.start_frame_final
seq2.volume = 0
seq2.keyframe_insert('volume')
context.scene.current_frame = tempcfra
return {'FINISHED'}
else:
self.report({'ERROR'}, "The selected strips don't overlap.")
return {'CANCELLED'}
bpy.types.register(SequencerCrossfadeSounds)
if __name__ == "__main__":
bpy.ops.sequencer.crossfade_sounds()
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