From 4c3d572eb850c32a45ec9cbaf82688d45c1eebf4 Mon Sep 17 00:00:00 2001
From: Tim Keller <tjk@tjkeller.xyz>
Date: Tue, 24 Jun 2025 19:16:36 -0500
Subject: add ability to change out albums list during runtime

---
 immich.py        |  2 +-
 lazycachelist.py | 18 +++++++++++++++---
 manager.py       | 17 ++++++++++++-----
 renderer.py      |  1 +
 4 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/immich.py b/immich.py
index 0f319c5..8c4f3e6 100644
--- a/immich.py
+++ b/immich.py
@@ -54,7 +54,7 @@ class ImmichConnector:
         size = "preview"  # TODO
         while True:
             texture_list, image_texture = self.texture_load_queue.get()
-            if not texture_list.index_in_cache_range(image_texture.asset_index):
+            if not texture_list.index_in_cache_range(image_texture.asset_index) or texture_list.void:
                 continue  # Texture was never loaded so it doesn't need to be free'd
             image_data, _ = self.load_image(image_texture.asset_key, size)
             image_texture.initialize(image_data)
diff --git a/lazycachelist.py b/lazycachelist.py
index 99212ab..b4d003a 100644
--- a/lazycachelist.py
+++ b/lazycachelist.py
@@ -39,13 +39,12 @@ class CallbackStateData:
 class LazyCachingTextureList():
     def __init__(self, album_ids, max_cache_items=100, change_callback=None):
         self.immich_connector = PixMan().immich_connector
+        self.void = False
         assert max_cache_items >= 20, "Minimum cache items is 20"  # Double small radius
 
         # Ring buffer
-        self.cache_length = max_cache_items
-        self.cache = [None] * max_cache_items
+        self.max_cache_items = max_cache_items
         self.radius_small = 10
-        self.radius_large = int(max_cache_items / 2)
         self.cache_items_behind = 0
         self.cache_items_ahead = 0
         self.cache_index = 0
@@ -62,6 +61,19 @@ class LazyCachingTextureList():
 
         self.change_callback = change_callback
 
+    @property
+    def max_cache_items(self):
+        return self.cache_length
+
+    @max_cache_items.setter
+    def max_cache_items(self, max_cache_items):
+        self.cache_length = max_cache_items
+        self.cache = [None] * max_cache_items
+        self.radius_large = int(max_cache_items / 2)
+
+    def free(self):
+        self.void = True
+
     def index_in_cache_range(self, index):
         index_range_low  = (self.asset_index - self.cache_items_behind) % self.asset_count
         index_range_high = (self.asset_index + self.cache_items_ahead ) % self.asset_count
diff --git a/manager.py b/manager.py
index 918a0c4..af1e4a7 100644
--- a/manager.py
+++ b/manager.py
@@ -67,9 +67,7 @@ class PixMan:
             return
 
         # Initialize texture list
-        change_callback = lambda d: self.socketio.emit("seek", d)
-        album_keys = [ ]
-        self.texture_list = LazyCachingTextureList(album_keys, max_cache_items=self.config.max_cache_assets, change_callback=change_callback)
+        self.update_textures()
 
         # Begin downloading images
         self.t_idle_download = Thread(target=self.immich_connector.idle, daemon=True)
@@ -79,6 +77,14 @@ class PixMan:
         self.display = PixDisplay(self.texture_list)
         self.display.main({})  # TODO glut args
 
+    def update_textures(self):
+        if self.texture_list:
+            self.texture_list.free()
+        change_callback = lambda d: self.socketio.emit("seek", d)
+        self.texture_list = LazyCachingTextureList(self.config.album_list, max_cache_items=self.config.max_cache_assets, change_callback=change_callback)
+        if self.display:
+            self.display.update_textures(self.texture_list)
+
     def update_config(self, config, replace=False):
         oldconfig = copy.deepcopy(self.config)
         if replace:
@@ -93,8 +99,9 @@ class PixMan:
         self.display.update_config()
 
         if oldconfig.album_list != self.config.album_list:
-            self.texture_list = LazyCachingTextureList(album_keys)
-            self.display.update_textures()
+            self.update_textures()
+        else:
+            self.texture_list.max_cache_items = self.config.max_cache_assets
 
         # If all goes well
         self.config.save(self.configfile)
diff --git a/renderer.py b/renderer.py
index 909ad2b..ae4be12 100644
--- a/renderer.py
+++ b/renderer.py
@@ -98,6 +98,7 @@ class ImageRenderer:
     def draw_image(self, tex, win_w, win_h, alpha):
         glUseProgram(self.shader)
         glBindVertexArray(self.vao)
+        # FIXME check if tex.id is None
         glBindTexture(GL_TEXTURE_2D, tex.id)
 
         # Calculate aspect ratios
-- 
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