feat(lib): add lz4 lib support (#4872)

Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>

Kconfig

@@ -1166,6 +1166,18 @@ menu "LVGL configuration"
                     bool "Use ThorVG external"
              endchoice
 
+		config LV_USE_LZ4
+			bool "Enable LZ4 compress/decompress lib"
+            choice
+             prompt "Choose lvgl built-in LZ4 lib or external lib"
+             depends on LV_USE_LZ4
+                default LV_USE_LZ4_INTERNAL
+                config LV_USE_LZ4_INTERNAL
+                    bool "Use lvgl built-in LZ4 lib"
+                config LV_USE_LZ4_EXTERNAL
+                    bool "Use external LZ4 library"
+             endchoice
+
 		config LV_USE_FFMPEG
 			bool "FFmpeg library"
 		config LV_FFMPEG_DUMP_FORMAT

lv_conf_template.h

@@ -670,6 +670,15 @@
 /* Enable ThorVG by assuming that its installed and linked to the project */
 #define LV_USE_THORVG_EXTERNAL 0
 
+/*Enable LZ4 compress/decompress lib*/
+#define LV_USE_LZ4  0
+
+/*Use lvgl built-in LZ4 lib*/
+#define LV_USE_LZ4_INTERNAL  0
+
+/*Use external LZ4 library*/
+#define LV_USE_LZ4_EXTERNAL  0
+
 /*FFmpeg library for image decoding and playing videos
  *Supports all major image formats so do not enable other image decoder with it*/
 #define LV_USE_FFMPEG 0

lvgl.h

@@ -104,6 +104,7 @@ extern "C" {
 #include "src/libs/rlottie/lv_rlottie.h"
 #include "src/libs/ffmpeg/lv_ffmpeg.h"
 #include "src/libs/tiny_ttf/lv_tiny_ttf.h"
+#include "src/libs/lz4/lz4.h"
 
 #include "src/layouts/lv_layout.h"
 

scripts/code-format.cfg

@@ -40,6 +40,7 @@
 --exclude=../src/libs/tjpgd/tjpgd.h
 --exclude=../src/libs/tjpgd/tjpgdcnf.h
 --exclude=../src/libs/thorvg
+--exclude=../src/libs/lz4
 --exclude=../tests/unity/unity.c
 --exclude=../tests/unity/unity_internals.h
 --exclude=../tests/unity/unity_support.c

src/libs/lz4/LICENSE

@@ -0,0 +1,24 @@
+LZ4 Library
+Copyright (c) 2011-2020, Yann Collet
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this
+  list of conditions and the following disclaimer in the documentation and/or
+  other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

src/lv_conf_internal.h

@@ -2202,6 +2202,33 @@
     #endif
 #endif
 
+/*Enable LZ4 compress/decompress lib*/
+#ifndef LV_USE_LZ4
+    #ifdef CONFIG_LV_USE_LZ4
+        #define LV_USE_LZ4 CONFIG_LV_USE_LZ4
+    #else
+        #define LV_USE_LZ4  0
+    #endif
+#endif
+
+/*Use lvgl built-in LZ4 lib*/
+#ifndef LV_USE_LZ4_INTERNAL
+    #ifdef CONFIG_LV_USE_LZ4_INTERNAL
+        #define LV_USE_LZ4_INTERNAL CONFIG_LV_USE_LZ4_INTERNAL
+    #else
+        #define LV_USE_LZ4_INTERNAL  0
+    #endif
+#endif
+
+/*Use external LZ4 library*/
+#ifndef LV_USE_LZ4_EXTERNAL
+    #ifdef CONFIG_LV_USE_LZ4_EXTERNAL
+        #define LV_USE_LZ4_EXTERNAL CONFIG_LV_USE_LZ4_EXTERNAL
+    #else
+        #define LV_USE_LZ4_EXTERNAL  0
+    #endif
+#endif
+
 /*FFmpeg library for image decoding and playing videos
  *Supports all major image formats so do not enable other image decoder with it*/
 #ifndef LV_USE_FFMPEG

tests/src/lv_test_conf_full.h

@@ -77,6 +77,7 @@
 #define LV_USE_SYSMON           1
 #define LV_USE_SNAPSHOT         1
 #define LV_USE_THORVG_INTERNAL  1
+#define LV_USE_LZ4_INTERNAL     1
 #define LV_USE_VECTOR_GRAPHIC   1
 
 #define LV_BUILD_EXAMPLES       1