1 files changed, 17 insertions, 1 deletions
diff --git a/src/util/asset_manager.h b/src/util/asset_manager.h
index 786a8db..f6ad244 100644
--- a/src/util/asset_manager.h
+++ b/src/util/asset_manager.h
@@ -16,10 +16,21 @@ enum class AssetType : uint8_t {
   PROC_GPU,
 };
 
+// Compression scheme applied to the packed bytes (only relevant for static
+// embedded assets; disk-load and procedural assets are always NONE).
+enum class AssetCompression : uint8_t {
+  NONE = 0,
+  // Order-0 rANS, model seeded from a corpus-wide histogram embedded in the
+  // generated assets blob (see GetAnsAsciiHistogram). Used for WGSL.
+  ANS_ASCII = 1,
+};
+
 struct AssetRecord {
   const uint8_t* data; // Pointer to asset data (static or dynamic)
-  size_t size;         // Size of the asset data
+  size_t size;         // Size of 'data' in bytes (compressed size if any)
   AssetType type;
+  AssetCompression compression;   // How 'data' is encoded; NONE = raw bytes
+  size_t uncompressed_size;       // Size after decompression (== size if NONE)
   const char* proc_func_name_str; // Name of procedural generation function
                                   // (string literal)
   const float* proc_params; // Parameters for procedural generation (static,
@@ -27,6 +38,11 @@ struct AssetRecord {
   int num_proc_params;      // Number of procedural parameters
 };
 
+// Initial-state histogram (256 entries) used to seed ANS_ASCII compression.
+// Defined in the generated assets blob; computed at pack time over the WGSL
+// corpus.
+const uint32_t* GetAnsAsciiHistogram();
+
 // Generic interface
 // Retrieves a pointer to the asset data.
 // - Static assets are guaranteed to be 16-byte aligned.