chore(bw): Reduce FLASH used by 212x64 startup/shutdown animations (#3989)

* Reduce FLASH storage of startup/shutdown animation for 212x64 LCD B&W radios.

* Simplify bitmaps.

* Support drawing animation bitmaps with transparency.

radio/src/gui/212x64/lcd.cpp

@@ -1008,7 +1008,7 @@ void lcdDrawBitmap(coord_t x, coord_t y, const uint8_t * img, coord_t offset, co
   }
 }
 
-void lcdDrawRleBitmap(coord_t x, coord_t y, const uint8_t * img, coord_t offset, coord_t width)
+void lcdDrawRleBitmap(coord_t x, coord_t y, const uint8_t * img, coord_t offset, coord_t width, bool overlay)
 {
   RleBitmap pic(img, offset);
 
@@ -1024,19 +1024,40 @@ void lcdDrawRleBitmap(coord_t x, coord_t y, const uint8_t * img, coord_t offset,
 
   for (uint8_t row=0; row<rows; row++) {
     uint8_t *p = &displayBuf[(row + (y/2)) * LCD_W + x];
-    for (coord_t i=0; i<width; i++) {
-      if (p >= DISPLAY_END) return;
-      uint8_t b = pic.getNext();
-      if (y & 1) {
-        *p = (*p & 0x0f) + ((b & 0x0f) << 4);
-        if ((p+LCD_W) < DISPLAY_END) {
-          *(p+LCD_W) = (*(p+LCD_W) & 0xf0) + ((b & 0xf0) >> 4);
+    if (overlay) {
+      for (coord_t i=0; i<width; i++) {
+        if (p >= DISPLAY_END) return;
+        uint8_t b = pic.getNext();
+        if (y & 1) {
+          if (b & 0x0f)
+            *p = (*p & 0x0f) + ((b & 0x0f) << 4);
+          if ((p+LCD_W) < DISPLAY_END && b & 0xf0) {
+            *(p+LCD_W) = (*(p+LCD_W) & 0xf0) + ((b & 0xf0) >> 4);
+          }
         }
+        else {
+          if (b & 0x0f)
+            *p = (*p & 0xf0) + (b & 0x0f);
+          if (b & 0xf0)
+            *p = (*p & 0x0f) + (b & 0xf0);
+        }
+        p++;
       }
-      else {
-        *p = b;
+    } else {
+      for (coord_t i=0; i<width; i++) {
+        if (p >= DISPLAY_END) return;
+        uint8_t b = pic.getNext();
+        if (y & 1) {
+          *p = (*p & 0x0f) + ((b & 0x0f) << 4);
+          if ((p+LCD_W) < DISPLAY_END) {
+            *(p+LCD_W) = (*(p+LCD_W) & 0xf0) + ((b & 0xf0) >> 4);
+          }
+        }
+        else {
+          *p = b;
+        }
+        p++;
       }
-      p++;
     }
     pic.goToNextRow();
     pic.skip(offset);

radio/src/gui/212x64/lcd.h

@@ -164,7 +164,7 @@ void drawTelemetryTopBar();
 void lcdDraw1bitBitmap(coord_t x, coord_t y, const unsigned char * img, uint8_t idx, LcdFlags att=0);
 
 void lcdDrawBitmap(coord_t x, coord_t y, const uint8_t * img, coord_t offset=0, coord_t width=0);
-void lcdDrawRleBitmap(coord_t x, coord_t y, const uint8_t * img, coord_t offset=0, coord_t width=0);
+void lcdDrawRleBitmap(coord_t x, coord_t y, const uint8_t * img, coord_t offset=0, coord_t width=0, bool overlay=false);
 #define LCD_ICON(x, y, icon) lcdDrawRleBitmap(x, y, icons, icon)
 
 

radio/src/gui/212x64/startup_shutdown.cpp

@@ -22,8 +22,14 @@
 #include "opentx.h"
 
 
-#define ANIMATIONS_BITMAP_WIDTH       60
-#define ANIMATIONS_BITMAP_HEIGHT      60
+#define ANIMATIONS_BITMAP_WIDTH     30
+#define ANIMATIONS_BITMAP_HEIGHT    30
+
+#define POWER_BITMAP_WIDTH          40
+#define POWER_BITMAP_HEIGHT         40
+
+#define SLEEP_BITMAP_WIDTH          60
+#define SLEEP_BITMAP_HEIGHT         60
 
 
 const unsigned char bmp_lock[] = {
@@ -33,11 +39,28 @@ const unsigned char bmp_lock[] = {
 const unsigned char bmp_shutdown[] = {
 #include "shutdown.lbm"
 };
+const int8_t bmp_shutdown_xo[] = {
+  0, 0, -ANIMATIONS_BITMAP_WIDTH, -ANIMATIONS_BITMAP_WIDTH
+};
+const int8_t bmp_shutdown_yo[] = {
+  -ANIMATIONS_BITMAP_HEIGHT, 0, 0, -ANIMATIONS_BITMAP_HEIGHT
+};
+
+const unsigned char bmp_power[] = {
+#include "power.lbm"
+};
 
 const unsigned char bmp_sleep[] = {
 #include "sleep.lbm"
 };
 
+static void drawAnimation(uint8_t idx)
+{
+  lcdDrawRleBitmap((LCD_W - POWER_BITMAP_WIDTH) / 2, (LCD_H - POWER_BITMAP_HEIGHT) / 2, bmp_power);
+  for (uint8_t i = 0; i <=idx; i += 1)
+    lcdDrawRleBitmap((LCD_W / 2) + bmp_shutdown_xo[i], (LCD_H / 2) + bmp_shutdown_yo[i], bmp_shutdown, i * ANIMATIONS_BITMAP_WIDTH, ANIMATIONS_BITMAP_WIDTH, true);
+}
+
 void drawStartupAnimation(uint32_t duration, uint32_t totalDuration)
 {
   if (totalDuration == 0)
@@ -49,9 +72,9 @@ void drawStartupAnimation(uint32_t duration, uint32_t totalDuration)
   lcdClear();
 
   if (index == 0)
-    lcdDrawRleBitmap((LCD_W - ANIMATIONS_BITMAP_WIDTH) / 2, (LCD_H - ANIMATIONS_BITMAP_HEIGHT) / 2, bmp_lock, 0, ANIMATIONS_BITMAP_WIDTH);
+    lcdDrawRleBitmap((LCD_W - POWER_BITMAP_WIDTH) / 2, (LCD_H - POWER_BITMAP_HEIGHT) / 2, bmp_lock);
   else
-    lcdDrawRleBitmap((LCD_W - ANIMATIONS_BITMAP_WIDTH) / 2, (LCD_H - ANIMATIONS_BITMAP_HEIGHT) / 2, bmp_shutdown, (index - 1) * ANIMATIONS_BITMAP_WIDTH, ANIMATIONS_BITMAP_WIDTH);
+    drawAnimation(index - 1);
 
   lcdRefresh();
 }
@@ -66,7 +89,8 @@ void drawShutdownAnimation(uint32_t duration, uint32_t totalDuration, const char
   lcdRefreshWait();
   lcdClear();
 
-  lcdDrawRleBitmap((LCD_W - ANIMATIONS_BITMAP_WIDTH) / 2, (LCD_H - ANIMATIONS_BITMAP_HEIGHT) / 2, bmp_shutdown, (3 - index) * ANIMATIONS_BITMAP_WIDTH, ANIMATIONS_BITMAP_WIDTH);
+  drawAnimation(3 - index);
+
   if (message) {
     lcdDrawText((LCD_W - getTextWidth(message)) / 2, LCD_H - 2*FH, message);
   }
@@ -78,7 +102,7 @@ void drawSleepBitmap()
 {
   lcdRefreshWait();
   lcdClear();
-  lcdDrawRleBitmap((LCD_W - ANIMATIONS_BITMAP_WIDTH) / 2, (LCD_H - ANIMATIONS_BITMAP_HEIGHT) / 2, bmp_sleep, 0);
+  lcdDrawRleBitmap((LCD_W - SLEEP_BITMAP_WIDTH) / 2, (LCD_H - SLEEP_BITMAP_HEIGHT) / 2, bmp_sleep);
   lcdRefresh();
   lcdRefreshWait();
 }