feat(libs): add libjpeg-turbo decoder (#4567)

Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>

tests/CMakeLists.txt

@@ -176,6 +176,10 @@ set(generate_test_runner_rb
     ${CMAKE_CURRENT_SOURCE_DIR}/unity/generate_test_runner.rb)
 set(generate_test_runner_config ${CMAKE_CURRENT_SOURCE_DIR}/config.yml)
 
+# libjpeg is required for the jpeg test case
+find_package(JPEG REQUIRED)
+include_directories(${JPEG_INCLUDE_DIR})
+
 # disable test targets for build only tests
 if (ENABLE_TESTS)
     file( GLOB_RECURSE TEST_CASE_FILES src/test_cases/*.c )
@@ -204,7 +208,7 @@ foreach( test_case_fname ${TEST_CASE_FILES} )
         ${test_case_fname}
         ${test_runner_fname}
     )
-    target_link_libraries(${test_name} test_common lvgl_demos lvgl png m ${TEST_LIBS})
+    target_link_libraries(${test_name} test_common lvgl_demos lvgl png ${JPEG_LIBRARIES} m ${TEST_LIBS})
     target_include_directories(${test_name} PUBLIC ${TEST_INCLUDE_DIRS})
     target_compile_options(${test_name} PUBLIC ${LVGL_TESTFILE_COMPILE_OPTIONS})
 

tests/src/lv_test_conf_full.h

@@ -64,6 +64,7 @@
 #define LV_USE_LODEPNG      1
 #define LV_USE_BMP          1
 #define LV_USE_TJPGD        1
+#define LV_USE_LIBJPEG_TURBO   1
 #define LV_USE_GIF          1
 #define LV_USE_QRCODE       1
 #define LV_USE_BARCODE      1

tests/src/test_cases/libs/test_libjpeg_turbo.c

@@ -0,0 +1,54 @@
+#if LV_BUILD_TEST
+#include "../lvgl.h"
+
+#include "unity/unity.h"
+#include "lv_test_helpers.h"
+
+void setUp(void)
+{
+    /* Function run before every test */
+}
+
+void tearDown(void)
+{
+    /* Function run after every test */
+}
+
+static void create_images(void)
+{
+    lv_obj_clean(lv_scr_act());
+
+    lv_obj_t * img;
+
+    img = lv_img_create(lv_scr_act());
+    lv_img_set_src(img, "A:src/test_assets/test_img_lvgl_logo.jpg");
+    lv_obj_center(img);
+}
+
+void test_jpg_2(void)
+{
+    /* Temporarily remove tjpgd decoder */
+    lv_tjpgd_deinit();
+
+    create_images();
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("libs/jpg_2.png");
+
+
+    uint32_t mem_before = lv_test_get_free_mem();
+    for(uint32_t i = 0; i < 20; i++) {
+        create_images();
+
+        lv_obj_invalidate(lv_scr_act());
+        lv_refr_now(NULL);
+    }
+
+    TEST_ASSERT_EQUAL_SCREENSHOT("libs/jpg_2.png");
+
+    TEST_ASSERT_EQUAL(mem_before, lv_test_get_free_mem());
+
+    /* Re-add tjpgd decoder */
+    lv_tjpgd_init();
+}
+
+#endif

tests/src/test_cases/libs/test_tjpgd.c

@@ -41,6 +41,9 @@ static void create_images(void)
 
 void test_tjpgd_1(void)
 {
+    /* Temporarily remove libjpeg_turbo decoder */
+    lv_libjpeg_turbo_deinit();
+
     create_images();
 
     TEST_ASSERT_EQUAL_SCREENSHOT("libs/jpg_1.png");
@@ -58,6 +61,8 @@ void test_tjpgd_1(void)
 
     TEST_ASSERT_EQUAL(mem_before, lv_test_get_free_mem());
 
+    /* Re-add libjpeg_turbo decoder */
+    lv_libjpeg_turbo_init();
 }
 
 #endif