perf(lcd): precompose emote updates and smooth closed eyes

2026-10-09 15:05:05 +08:00
parent e75846ea15
commit b5c8aeb4fe
3 changed files with 264 additions and 41 deletions
@@ -0,0 +1,80 @@
+from pathlib import Path
+import re,subprocess,tempfile
+src=(Path(__file__).resolve().parents[1]/'components/platform/src/lcd_direct.c').read_text()
+def extract(name):
+    m=re.search(r'static [^;{}]+\b'+name+r'\([^;{}]*\)\s*\{',src)
+    a=m.start(); b=src.index('{',a)+1; depth=1
+    while depth:
+        if src[b]=='{': depth+=1
+        if src[b]=='}': depth-=1
+        b+=1
+    return src[a:b]
+prefix='''#include <stdint.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#define LCD_DIRECT_WIDTH 320
+#define LCD_DIRECT_EMOTE_DMA_ROWS 16
+#define LCD_DIRECT_TRANSFER_TIMEOUT_MS 100
+#define portENTER_CRITICAL(x) ((void)0)
+#define portEXIT_CRITICAL(x) ((void)0)
+#define pdMS_TO_TICKS(x) (x)
+#define ESP_LOGE(...) ((void)0)
+#define ESP_OK 0
+#define ESP_ERR_INVALID_SIZE 1
+#define ESP_ERR_TIMEOUT 2
+#define pdTRUE 1
+typedef int esp_err_t;
+typedef int gfx_disp_t;
+static bool s_emote_active, s_emote_transfer_fault;
+static int s_emote_flush_error, s_panel, s_transfer_done_sem;
+static uint16_t dma[5120];
+static uint16_t *s_emote_dma_pixels=dma;
+static uint16_t capture[320*240];
+static int calls,ready,fail_call,timeout_call,origin_y,width;
+static bool gfx_disp_flush_ready(gfx_disp_t *d,bool swap) {++ready;return true;}
+static int xSemaphoreTake(int sem,int ticks) {return ticks && calls!=timeout_call;}
+static int esp_lcd_panel_draw_bitmap(int panel,int x1,int y1,int x2,int y2,const void *data) {
+    ++calls; assert(ready==0); assert((x2-x1)*(y2-y1)<=5120); assert(data==dma);
+    if(calls==fail_call) return 3;
+    memcpy(capture+(y1-origin_y)*width,data,(x2-x1)*(y2-y1)*2);
+    return 0;
+}
+'''
+test='''int main(void) {
+    uint16_t source[320*240];
+    for(int i=0;i<320*240;++i) source[i]=(uint16_t)i;
+    for(width=1;width<=320;++width) {
+        calls=ready=fail_call=timeout_call=0;origin_y=65;s_emote_active=true;
+        s_emote_transfer_fault=false;s_emote_flush_error=0;
+        lcd_direct_emote_flush(NULL,0,65,width,158,source);
+        assert(ready==1 && s_emote_flush_error==0);
+        assert(memcmp(source,capture,width*93*2)==0);
+        assert(calls==(93+5120/width-1)/(5120/width));
+    }
+    width=238;calls=ready=0;timeout_call=2;s_emote_flush_error=0;
+    lcd_direct_emote_flush(NULL,41,65,279,158,source);
+    assert(ready==1 && s_emote_transfer_fault && s_emote_flush_error==2 && calls==2);
+    lcd_direct_emote_flush(NULL,41,65,279,158,source);
+    assert(calls==2 && ready==2);
+    s_emote_transfer_fault=false;timeout_call=0;fail_call=1;calls=ready=0;
+    lcd_direct_emote_flush(NULL,41,65,279,158,source);
+    assert(calls==1 && ready==1 && s_emote_flush_error==3);
+    calls=ready=0;s_emote_active=false;
+    lcd_direct_emote_flush(NULL,41,65,279,158,source);assert(calls==0 && ready==1);
+    uint8_t eyes[238*14*3+2];memset(eyes,123,sizeof(eyes));
+    lcd_direct_emote_draw_closed_eyes(eyes+1,238,14,0xffe0);
+    assert(eyes[0]==123 && eyes[sizeof(eyes)-1]==123);
+    const uint8_t *alpha=eyes+1+238*14*2;
+    for(int y=0;y<14;++y) for(int x=3;x<=95;++x)
+        assert(alpha[y*238+x]==alpha[y*238+x+140]);
+    assert(alpha[3*238+49]==255 && alpha[11*238+3]==255);
+    puts("PASS: 320 transfer widths, DMA bounds/order, timeout latch, inactive/error completion and symmetric closed-eye raster");
+}'''
+with tempfile.TemporaryDirectory(prefix='emote-transport-') as tmp:
+    c=Path(tmp)/'test.c';exe=Path(tmp)/'test'
+    c.write_text(prefix+extract('lcd_direct_emote_flush')+'\n'+extract('lcd_direct_emote_draw_closed_eyes')+'\n'+test)
+    subprocess.run(['clang','-std=c11','-fsanitize=address,undefined',str(c),'-o',str(exe)],check=True)
+    subprocess.run([str(exe)],check=True)