VSE: Cache rewrite

This patch implements new cache system.
Aim is to give user more control over cache, so it can be maximally
utilized. This is done through sequencer timeline side panel
in category proxy & cache.
Cached images are also visualized in timeline, controled by
sequencer timeline view->cache menu

Functional changes:
 - NOT use IMB_moviecache API
 - refactor names of cached image types
 - each scene owns 1 sequencer cache
 - merge preprocess cache into per-sequencer cache
 - cache links images rendered per frame in order as they are created
 - add cache content visualization tool
 - add RNA properties to control the cache

More info can be found in design notes in blenkernel/intern/seqcache.c
and in https://developer.blender.org/D4443

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D4443

1 files changed, 73 insertions, 5 deletions

diff --git a/release/scripts/startup/bl_ui/space_sequencer.py b/release/scripts/startup/bl_ui/space_sequencer.py
index 87ebf365a1e..bd3eb2bc304 100644
--- a/release/scripts/startup/bl_ui/space_sequencer.py
+++ b/release/scripts/startup/bl_ui/space_sequencer.py
@@ -159,6 +159,25 @@ class SEQUENCER_MT_view_toggle(Menu):
         layout.operator("sequencer.view_toggle").type = 'SEQUENCER_PREVIEW'
 
 
+class SEQUENCER_MT_view_cache(Menu):
+    bl_label = "Cache"
+
+    def draw(self, context):
+        layout = self.layout
+
+        ed = context.scene.sequence_editor
+        layout.prop(ed, "show_cache")
+        layout.separator()
+
+        col = layout.column()
+        col.enabled = ed.show_cache
+
+        col.prop(ed, "show_cache_final_out")
+        col.prop(ed, "show_cache_raw")
+        col.prop(ed, "show_cache_preprocessed")
+        col.prop(ed, "show_cache_composite")
+
+
 class SEQUENCER_MT_view(Menu):
     bl_label = "View"
 
@@ -212,6 +231,7 @@ class SEQUENCER_MT_view(Menu):
             layout.prop(st, "show_frame_indicator")
             layout.prop(st, "show_strip_offset")
             layout.prop(st, "show_marker_lines")
+            layout.menu("SEQUENCER_MT_view_cache")
 
             layout.prop_menu_enum(st, "waveform_display_type")
 
@@ -1145,9 +1165,29 @@ class SEQUENCER_PT_filter(SequencerButtonsPanel, Panel):
         layout.prop(strip, "use_float", text="Convert to Float")
 
 
+class SEQUENCER_PT_cache_settings(SequencerButtonsPanel, Panel):
+    bl_label = "Cache Settings"
+    bl_category = "Proxy & Cache"
+
+    @classmethod
+    def poll(cls, context):
+        return cls.has_sequencer(context)
+
+    def draw(self, context):
+        layout = self.layout
+        ed = context.scene.sequence_editor
+
+        layout.prop(ed, "cache_raw")
+        layout.prop(ed, "cache_preprocessed")
+        layout.prop(ed, "cache_composite")
+        layout.prop(ed, "cache_final")
+        layout.separator()
+        layout.prop(ed, "recycle_max_cost")
+
+
 class SEQUENCER_PT_proxy_settings(SequencerButtonsPanel, Panel):
-    bl_label = "Proxy settings"
-    bl_category = "Proxy"
+    bl_label = "Proxy Settings"
+    bl_category = "Proxy & Cache"
     @classmethod
     def poll(cls, context):
         return cls.has_sequencer(context)
@@ -1168,8 +1208,8 @@ class SEQUENCER_PT_proxy_settings(SequencerButtonsPanel, Panel):
 
 
 class SEQUENCER_PT_strip_proxy(SequencerButtonsPanel, Panel):
-    bl_label = "Strip Proxy/Timecode"
-    bl_category = "Proxy"
+    bl_label = "Strip Proxy & Timecode"
+    bl_category = "Proxy & Cache"
 
     @classmethod
     def poll(cls, context):
@@ -1225,8 +1265,33 @@ class SEQUENCER_PT_strip_proxy(SequencerButtonsPanel, Panel):
                 col.prop(proxy, "timecode")
 
 
+class SEQUENCER_PT_strip_cache(SequencerButtonsPanel, Panel):
+    bl_label = "Strip Cache"
+    bl_category = "Proxy & Cache"
+
+    @classmethod
+    def poll(cls, context):
+        if not cls.has_sequencer(context):
+            return False
+        if act_strip(context) is not None:
+            return True
+
+    def draw_header(self, context):
+        strip = act_strip(context)
+        self.layout.prop(strip, "override_cache_settings", text="")
+
+    def draw(self, context):
+        layout = self.layout
+        strip = act_strip(context)
+        layout.active = strip.override_cache_settings
+
+        layout.prop(strip, "cache_raw")
+        layout.prop(strip, "cache_preprocessed")
+        layout.prop(strip, "cache_composite")
+
+
 class SEQUENCER_PT_preview(SequencerButtonsPanel_Output, Panel):
-    bl_label = "Scene Preview/Render"
+    bl_label = "Scene Preview & Render"
     bl_space_type = 'SEQUENCE_EDITOR'
     bl_region_type = 'UI'
     bl_category = "Strip"
@@ -1411,6 +1476,7 @@ classes = (
     SEQUENCER_HT_header,
     SEQUENCER_MT_editor_menus,
     SEQUENCER_MT_view,
+    SEQUENCER_MT_view_cache,
     SEQUENCER_MT_view_toggle,
     SEQUENCER_MT_select,
     SEQUENCER_MT_marker,
@@ -1430,8 +1496,10 @@ classes = (
     SEQUENCER_PT_scene,
     SEQUENCER_PT_mask,
     SEQUENCER_PT_filter,
+    SEQUENCER_PT_cache_settings,
     SEQUENCER_PT_proxy_settings,
     SEQUENCER_PT_strip_proxy,
+    SEQUENCER_PT_strip_cache,
     SEQUENCER_PT_preview,
     SEQUENCER_PT_view,
     SEQUENCER_PT_view_safe_areas,