Logo rework (#1232)

!Allows for new logo format that supports animation!
Also moves logos out of repo into their own repo for ease of management.


Changes:
* Remove deprecated logos
* Draft new Bootloader decoder
* Use new logo handler
* Simplify logo code further
* Fix time bug on static images
* Fix exit at end of animation
* Docs
* Interframe delay in 5ms increments
* Quick pass handling empty updates
* Exit at the end _after_ the frame delay
* One final delay
* Fix for overrun of logo data
* Fixes https://github.com/Ralim/IronOS-Meta/issues/7

source/Core/Drivers/BootLogo.cpp

@@ -0,0 +1,84 @@
+#include "BootLogo.h"
+#include "BSP.h"
+#include "Buttons.hpp"
+#include "OLED.hpp"
+#include "cmsis_os.h"
+#define LOGO_PAGE_LENGTH 1024
+void BootLogo::handleShowingLogo(const uint8_t *ptrLogoArea) {
+  // Read the first few bytes and figure out what format we are looking at
+  if (OLD_LOGO_HEADER_VALUE == *(reinterpret_cast<const uint32_t *>(ptrLogoArea))) {
+    showOldFormat(ptrLogoArea);
+  } else if (ptrLogoArea[0] == 0xAA) {
+    showNewFormat(ptrLogoArea + 1);
+  }
+  OLED::clearScreen();
+  OLED::refresh();
+}
+
+void BootLogo::showOldFormat(const uint8_t *ptrLogoArea) {
+
+  OLED::drawAreaSwapped(0, 0, 96, 16, (uint8_t *)(ptrLogoArea + 4));
+  OLED::refresh();
+
+  // Delay here until button is pressed or its been 4 seconds
+  waitForButtonPressOrTimeout(TICKS_SECOND * 4);
+}
+
+void BootLogo::showNewFormat(const uint8_t *ptrLogoArea) {
+  // New logo format (a) fixes long standing byte swap quirk and (b) supports animation
+  uint8_t interFrameDelay = ptrLogoArea[0];
+  OLED::clearScreen();
+  ButtonState buttons = getButtonState();
+
+  // Now draw in the frames
+  int position = 1;
+  do {
+
+    int len = (showNewFrame(ptrLogoArea + position));
+    OLED::refresh();
+    position += len;
+    buttons = getButtonState();
+
+    // Button pressed
+    if (buttons != BUTTON_NONE) {
+      return;
+    }
+
+    if (interFrameDelay) {
+      osDelay(interFrameDelay * 5);
+    } else {
+      // Delay here until button is pressed or its been 4 seconds
+      waitForButtonPressOrTimeout(TICKS_SECOND * 4);
+      return;
+    }
+    // If this was an early exit; bail now
+    if (len == 0) {
+      return;
+    }
+
+  } while (position < 1022); // 1024 less the header type byte and the inter-frame-delay
+}
+int BootLogo::showNewFrame(const uint8_t *ptrLogoArea) {
+  uint8_t length = ptrLogoArea[0];
+
+  if (length == 0xFF) {
+    // Full frame update
+    OLED::drawArea(0, 0, 96, 16, ptrLogoArea + 1);
+    length = 96;
+  } else if (length == 0xFE) {
+    return 1;
+  } else if (length == 0) {
+    return 0; // end
+  } else {
+    length /= 2;
+    // Draw length patches
+    for (int p = 0; p < length; p++) {
+      uint8_t index = ptrLogoArea[1 + (p * 2)];
+      uint8_t value = ptrLogoArea[2 + (p * 2)];
+      OLED::drawArea(index % 96, index >= 96 ? 8 : 0, 1, 8, &value);
+    }
+  }
+
+  OLED::refresh();
+  return (length * 2) + 1;
+}

source/Core/Drivers/BootLogo.h

@@ -0,0 +1,17 @@
+#ifndef DRIVERS_BOOTLOGO_H_
+#define DRIVERS_BOOTLOGO_H_
+
+// Wrapper for handling showing a bootlogo
+#include <stdint.h>
+#define OLD_LOGO_HEADER_VALUE 0xF00DAA55
+class BootLogo {
+public:
+  static void handleShowingLogo(const uint8_t *ptrLogoArea);
+
+private:
+  static void showOldFormat(const uint8_t *ptrLogoArea);
+  static void showNewFormat(const uint8_t *ptrLogoArea);
+  static int  showNewFrame(const uint8_t *ptrLogoArea);
+};
+
+#endif // DRIVERS_BOOTLOGO_H_