astcenc: Update to 4.7.0

https://github.com/ARM-software/astc-encoder/releases/tag/4.5.0
https://github.com/ARM-software/astc-encoder/releases/tag/4.6.0
https://github.com/ARM-software/astc-encoder/releases/tag/4.7.0

COPYRIGHT.txt

@@ -165,7 +165,7 @@ License: BSD-3-clause
 
 Files: ./thirdparty/astcenc/
 Comment: Arm ASTC Encoder
-Copyright: 2011-2023, Arm Limited
+Copyright: 2011-2024, Arm Limited
 License: Apache-2.0
 
 Files: ./thirdparty/basis_universal/

thirdparty/README.md

@@ -47,7 +47,7 @@ Files extracted from upstream source:
 ## astcenc
 
 - Upstream: https://github.com/ARM-software/astc-encoder
-- Version: 4.4.0 (5a5b5a1ef60dd47c27c28c66c118d22c40e3197e, 2023)
+- Version: 4.7.0 (1a51f2915121275038677317c8bf61f1a78b590c, 2024)
 - License: Apache 2.0
 
 Files extracted from upstream source:

thirdparty/astcenc/astcenc.h

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 // ----------------------------------------------------------------------------
-// Copyright 2020-2023 Arm Limited
+// Copyright 2020-2024 Arm Limited
 //
 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
 // use this file except in compliance with the License. You may obtain a copy
@@ -215,6 +215,8 @@ enum astcenc_error {
 	ASTCENC_ERR_BAD_CONTEXT,
 	/** @brief The call failed due to unimplemented functionality. */
 	ASTCENC_ERR_NOT_IMPLEMENTED,
+	/** @brief The call failed due to an out-of-spec decode mode flag set. */
+	ASTCENC_ERR_BAD_DECODE_MODE,
 #if defined(ASTCENC_DIAGNOSTICS)
 	/** @brief The call failed due to an issue with diagnostic tracing. */
 	ASTCENC_ERR_DTRACE_FAILURE,
@@ -302,6 +304,11 @@ enum astcenc_type
 	ASTCENC_TYPE_F32 = 2
 };
 
+/**
+ * @brief Function pointer type for compression progress reporting callback.
+ */
+extern "C" typedef void (*astcenc_progress_callback)(float);
+
 /**
  * @brief Enable normal map compression.
  *
@@ -312,6 +319,19 @@ enum astcenc_type
  */
 static const unsigned int ASTCENC_FLG_MAP_NORMAL          = 1 << 0;
 
+/**
+ * @brief Enable compression heuristics that assume use of decode_unorm8 decode mode.
+ *
+ * The decode_unorm8 decode mode rounds differently to the decode_fp16 decode mode, so enabling this
+ * flag during compression will allow the compressor to use the correct rounding when selecting
+ * encodings. This will improve the compressed image quality if your application is using the
+ * decode_unorm8 decode mode, but will reduce image quality if using decode_fp16.
+ *
+ * Note that LDR_SRGB images will always use decode_unorm8 for the RGB channels, irrespective of
+ * this setting.
+ */
+static const unsigned int ASTCENC_FLG_USE_DECODE_UNORM8        = 1 << 1;
+
 /**
  * @brief Enable alpha weighting.
  *
@@ -378,6 +398,7 @@ static const unsigned int ASTCENC_ALL_FLAGS =
                               ASTCENC_FLG_MAP_RGBM |
                               ASTCENC_FLG_USE_ALPHA_WEIGHT |
                               ASTCENC_FLG_USE_PERCEPTUAL |
+                              ASTCENC_FLG_USE_DECODE_UNORM8 |
                               ASTCENC_FLG_DECOMPRESS_ONLY |
                               ASTCENC_FLG_SELF_DECOMPRESS_ONLY;
 
@@ -542,6 +563,24 @@ struct astcenc_config
 	 */
 	float tune_2plane_early_out_limit_correlation;
 
+	/**
+	 * @brief The config enable for the mode0 fast-path search.
+	 *
+	 * If this is set to TUNE_MIN_TEXELS_MODE0 or higher then the early-out fast mode0
+	 * search is enabled. This option is ineffective for 3D block sizes.
+	 */
+	float tune_search_mode0_enable;
+
+	/**
+	 * @brief The progress callback, can be @c nullptr.
+	 *
+	 * If this is specified the codec will peridocially report progress for
+	 * compression as a percentage between 0 and 100. The callback is called from one
+	 * of the compressor threads, so doing significant work in the callback will
+	 * reduce compression performance.
+	 */
+	astcenc_progress_callback progress_callback;
+
 #if defined(ASTCENC_DIAGNOSTICS)
 	/**
 	 * @brief The path to save the diagnostic trace data to.