From 6e3d01190fae01a0edebaeb5af81ec27cbb93c48 Mon Sep 17 00:00:00 2001
From: _VIFEXTech <1290176185@qq.com>
Date: Tue, 24 May 2022 18:36:22 +0800
Subject: [PATCH] feat(benchmark): make lvgl render at the highest frame rate
 (#3352)

* feat(benchmark): make lvgl render at the highest frame rate

* add lv_demo_benchmark_set_max_speed

* Update comments and README

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

Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
---
 demos/benchmark/README.md           |  2 +-
 demos/benchmark/lv_demo_benchmark.c | 32 +++++++++++++++++++++++++++++
 demos/benchmark/lv_demo_benchmark.h |  6 ++++++
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/demos/benchmark/README.md b/demos/benchmark/README.md
index 02f0e5bf5..5337f899a 100644
--- a/demos/benchmark/README.md
+++ b/demos/benchmark/README.md
@@ -16,7 +16,7 @@ On to top of the screen the title of the current test step, and the result of th
 - If you only want to run a specific scene for any purpose (e.g. debug, performance optimization etc.), you can call `lv_demo_benchmark_run_scene()` instead of `lv_demo_benchmark()`and pass the scene number.
 - If you enabled trace output by setting macro `LV_USE_LOG` to `1` and trace level `LV_LOG_LEVEL` to `LV_LOG_LEVEL_USER` or higher, benchmark results are printed out in `csv` format.
 - If you want to know when the testing is finished, you can register a callback function via `lv_demo_benchmark_register_finished_handler()` before calling `lv_demo_benchmark()` or `lv_demo_benchmark_run_scene()`. 
-
+- If you want to know the maximum rendering performance of the system, call `lv_demo_benchmark_set_max_speed(true)` before `lv_demo_benchmark()`.
 
 ## Interpret the result
 
diff --git a/demos/benchmark/lv_demo_benchmark.c b/demos/benchmark/lv_demo_benchmark.c
index 966befcf1..2356625c7 100644
--- a/demos/benchmark/lv_demo_benchmark.c
+++ b/demos/benchmark/lv_demo_benchmark.c
@@ -69,7 +69,10 @@ typedef struct {
 
 static lv_style_t style_common;
 static bool opa_mode = true;
+static bool run_max_speed = false;
 static finished_cb_t * benchmark_finished_cb = NULL;
+static uint32_t disp_ori_timer_period;
+static uint32_t anim_ori_timer_period;
 
 LV_IMG_DECLARE(img_benchmark_cogwheel_argb);
 LV_IMG_DECLARE(img_benchmark_cogwheel_rgb);
@@ -636,6 +639,18 @@ static void benchmark_init(void)
     lv_disp_t * disp = lv_disp_get_default();
     disp->driver->monitor_cb = monitor_cb;
 
+    /*Force to run at maximum frame rate*/
+    if(run_max_speed) {
+        if(disp->refr_timer) {
+            disp_ori_timer_period = disp->refr_timer->period;
+            lv_timer_set_period(disp->refr_timer, 1);
+        }
+
+        lv_timer_t * anim_timer = lv_anim_get_timer();
+        anim_ori_timer_period = anim_timer->period;
+        lv_timer_set_period(anim_timer, 1);
+    }
+
     lv_obj_t * scr = lv_scr_act();
     lv_obj_remove_style_all(scr);
     lv_obj_set_style_bg_opa(scr, LV_OPA_COVER, 0);
@@ -697,6 +712,10 @@ void lv_demo_benchmark_set_finished_cb(finished_cb_t * finished_cb)
     benchmark_finished_cb = finished_cb;
 }
 
+void lv_demo_benchmark_set_max_speed(bool en)
+{
+    run_max_speed = en;
+}
 
 /**********************
  *   STATIC FUNCTIONS
@@ -969,6 +988,19 @@ static void scene_next_task_cb(lv_timer_t * timer)
     }
     /*Ready*/
     else {
+
+        /*Restore original frame rate*/
+        if(run_max_speed) {
+            lv_timer_t * anim_timer = lv_anim_get_timer();
+            lv_timer_set_period(anim_timer, anim_ori_timer_period);
+
+            lv_disp_t * disp = lv_disp_get_default();
+            lv_timer_t * refr_timer = _lv_disp_get_refr_timer(disp);
+            if(refr_timer) {
+                lv_timer_set_period(refr_timer, disp_ori_timer_period);
+            }
+        }
+
         generate_report();      /* generate report */
     }
 }
diff --git a/demos/benchmark/lv_demo_benchmark.h b/demos/benchmark/lv_demo_benchmark.h
index ebcd14036..6a0a4f649 100644
--- a/demos/benchmark/lv_demo_benchmark.h
+++ b/demos/benchmark/lv_demo_benchmark.h
@@ -34,6 +34,12 @@ void lv_demo_benchmark_run_scene(int_fast16_t scene_no);
 
 void lv_demo_benchmark_set_finished_cb(finished_cb_t * finished_cb);
 
+/**
+ * Make the benchmark work at the highest frame rate
+ * @param en true: highest frame rate; false: default frame rate
+ */
+void lv_demo_benchmark_set_max_speed(bool en);
+
 /**********************
  *      MACROS
  **********************/