feat(log): add log level parameters to custom_print_cb (#3826)

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

docs/porting/log.md

@@ -25,7 +25,7 @@ If you can't use `printf` or want to use a custom function to log, you can regis
 For example:
 
 ```c
-void my_log_cb(const char * buf)
+void my_log_cb(lv_log_level_t level, const char * buf)
 {
   serial_send(buf, strlen(buf));
 }

src/misc/lv_log.c

@@ -108,7 +108,7 @@ void _lv_log_add(lv_log_level_t level, const char * file, int line, const char *
             lv_vsnprintf(msg, sizeof(msg), format, args);
             lv_snprintf(buf, sizeof(buf), "[%s]" LOG_TIMESTAMP_FMT " %s: %s \t(in %s line #%d)\n",
                         lvl_prefix[level], LOG_TIMESTAMP_EXPR func, msg, &file[p], line);
-            custom_print_cb(buf);
+            custom_print_cb(level, buf);
         }
 #endif
 
@@ -132,7 +132,7 @@ void lv_log(const char * format, ...)
     if(custom_print_cb) {
         char buf[512];
         lv_vsnprintf(buf, sizeof(buf), format, args);
-        custom_print_cb(buf);
+        custom_print_cb(LV_LOG_LEVEL_USER, buf);
     }
 #endif
 

src/misc/lv_log.h

@@ -49,7 +49,7 @@ typedef int8_t lv_log_level_t;
 /**
  * Log print function. Receives a string buffer to print".
  */
-typedef void (*lv_log_print_g_cb_t)(const char * buf);
+typedef void (*lv_log_print_g_cb_t)(lv_log_level_t level, const char * buf);
 
 /**********************
  * GLOBAL PROTOTYPES