display refactor

components/display/core/gds.c

@@ -0,0 +1,92 @@
+/**
+ * Copyright (c) 2017-2018 Tara Keeling
+ *				 2020 Philippe G. 
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include <string.h>
+#include <ctype.h>
+#include <stdint.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/gpio.h"
+#include "esp_log.h"
+
+#include "gds.h"
+#include "gds_private.h"
+
+static struct GDS_Device Display;
+
+static char TAG[] = "gds";
+
+struct GDS_Device*	GDS_AutoDetect( char *Driver, GDS_DetectFunc DetectFunc[] ) {
+	for (int i = 0; DetectFunc[i]; i++) {
+		if (DetectFunc[i](Driver, &Display)) {
+			ESP_LOGD(TAG, "Detected driver %p", &Display);
+			return &Display;
+		}	
+	}
+	
+	return NULL;
+}
+
+void GDS_ClearExt(struct GDS_Device* Device, bool full, ...) {
+	bool commit = true;
+	
+	if (full) {
+		GDS_Clear( Device, GDS_COLOR_BLACK ); 
+	} else {
+		va_list args;
+		va_start(args, full);
+		commit = va_arg(args, int);
+		int x1 = va_arg(args, int), y1 = va_arg(args, int), x2 = va_arg(args, int), y2 = va_arg(args, int);
+		if (x2 < 0) x2 = Device->Width - 1;
+		if (y2 < 0) y2 = Device->Height - 1;
+		GDS_ClearWindow( Device, x1, y1, x2, y2, GDS_COLOR_BLACK );
+		va_end(args);
+	}
+	
+	Device->Dirty = true;
+	if (commit)	GDS_Update(Device);		
+}	
+
+void GDS_Clear( struct GDS_Device* Device, int Color ) {
+    memset( Device->Framebuffer, Color, Device->FramebufferSize );
+}
+
+void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2, int Color ) {
+	// cheap optimization on boundaries
+	if (x1 == 0 && x2 == Device->Width - 1 && y1 % 8 == 0 && (y2 + 1) % 8 == 0) {
+		memset( Device->Framebuffer + (y1 / 8) * Device->Width, 0, (y2 - y1 + 1) / 8 * Device->Width );
+	} else {
+		for (int y = y1; y <= y2; y++) {
+			for (int x = x1; x <= x2; x++) {
+				Device->DrawPixelFast( Device, x, y, Color);
+			}		
+		}	
+	}	
+}
+
+void GDS_Update( struct GDS_Device* Device ) {
+	if (Device->Dirty) Device->Update( Device );
+	Device->Dirty = false;
+}
+
+bool GDS_Reset( struct GDS_Device* Device ) {
+	if ( Device->RSTPin >= 0 ) {
+		gpio_set_level( Device->RSTPin, 0 );
+		vTaskDelay( pdMS_TO_TICKS( 100 ) );
+        gpio_set_level( Device->RSTPin, 1 );
+    }
+    return true;
+}
+
+void GDS_SetContrast( struct GDS_Device* Device, uint8_t Contrast ) { Device->SetContrast( Device, Contrast); }
+void GDS_SetHFlip( struct GDS_Device* Device, bool On ) { Device->SetHFlip( Device, On ); }
+void GDS_SetVFlip( struct GDS_Device* Device, bool On ) { Device->SetVFlip( Device, On ); }
+int	GDS_GetWidth( struct GDS_Device* Device ) { return Device->Width; }
+int	GDS_GetHeight( struct GDS_Device* Device ) { return Device->Height; }
+void GDS_DisplayOn( struct GDS_Device* Device ) { Device->DisplayOn( Device ); }
+void GDS_DisplayOff( struct GDS_Device* Device ) { Device->DisplayOff( Device ); }