From 6c8e3e303d15b59df4c592244a7650021b4e8bbb Mon Sep 17 00:00:00 2001
From: Joerg Mueller <nexyon@gmail.com>
Date: Mon, 8 Feb 2010 14:43:44 +0000
Subject: 2.5 Audio:

- Python script to crossfade two sound strips in the sequencer
- Fix for the libsamplerate code producing awful audio when resampling sequencer strips
- Changed default resampler to a linear one (as temporary workaround for a bug that seems to be in the samplerate code)
- Fix for the OpenAL device to return a more accurate playback position
---
 release/scripts/op/sequencer.py | 76 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 release/scripts/op/sequencer.py

(limited to 'release')

diff --git a/release/scripts/op/sequencer.py b/release/scripts/op/sequencer.py
new file mode 100644
index 00000000000..e78084b3a7b
--- /dev/null
+++ b/release/scripts/op/sequencer.py
@@ -0,0 +1,76 @@
+# ##### 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, 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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