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- /**
- * 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 ) {
- if (Device->Depth == 1) Color = Color == GDS_COLOR_BLACK ? 0 : 0xff;
- else if (Device->Depth == 4) Color = Color | (Color << 4);
- memset( Device->Framebuffer, Color, Device->FramebufferSize );
- Device->Dirty = true;
- }
- void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2, int Color ) {
- // -1 means up to width/height
- if (x2 < 0) x2 = Device->Width - 1;
- if (y2 < 0) y2 = Device->Height - 1;
-
- // driver can provide own optimized clear window
- if (Device->ClearWindow) {
- Device->ClearWindow( Device, x1, y1, x2, y2, Color );
- } else if (Device->Depth == 1) {
- // single shot if we erase all screen
- if (x2 - x1 == Device->Width - 1 && y2 - y1 == Device->Height - 1) {
- memset( Device->Framebuffer, Color == GDS_COLOR_BLACK ? 0 : 0xff, Device->FramebufferSize );
- } else {
- uint8_t _Color = Color == GDS_COLOR_BLACK ? 0: 0xff;
- uint8_t Width = Device->Width >> 3;
- uint8_t *optr = Device->Framebuffer;
- // try to do byte processing as much as possible
- for (int r = y1; r <= y2;) {
- int c = x1;
- // for a row that is not on a boundary, no optimization possible
- while (r & 0x07 && r <= y2) {
- for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color );
- r++;
- }
- // go fast if we have more than 8 lines to write
- if (r + 8 <= y2) {
- memset(optr + Width * r + x1, _Color, x2 - x1 + 1);
- r += 8;
- } else while (r <= y2) {
- for (c = x1; c <= x2; c++) GDS_DrawPixelFast( Device, c, r, Color );
- r++;
- }
- }
- }
- } if (Device->Depth == 4) {
- if (x2 - x1 == Device->Width - 1 && y2 - y1 == Device->Height - 1) {
- // we assume color is 0..15
- memset( Device->Framebuffer, Color | (Color << 4), Device->FramebufferSize );
- } else {
- uint8_t _Color = Color | (Color << 4);
- int Width = Device->Width;
- uint8_t *optr = Device->Framebuffer;
- // try to do byte processing as much as possible
- for (int r = y1; r <= y2; r++) {
- int c = x1;
- if (c & 0x01) GDS_DrawPixelFast( Device, c++, r, Color);
- int chunk = (x2 - c + 1) >> 1;
- memset(optr + ((r * Width + c) >> 1), _Color, chunk);
- if (c + chunk <= x2) GDS_DrawPixelFast( Device, x2, r, Color);
- }
- }
- } else {
- for (int y = y1; y <= y2; y++) {
- for (int x = x1; x <= x2; x++) {
- GDS_DrawPixelFast( Device, x, y, Color);
- }
- }
- }
-
- // make sure diplay will do update
- Device->Dirty = true;
- }
- 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;
- }
- bool GDS_Init( struct GDS_Device* Device ) {
-
- Device->FramebufferSize = (Device->Width * Device->Height) / (8 / Device->Depth);
-
- // allocate FB unless explicitely asked not to
- if (!(Device->Alloc & GDS_ALLOC_NONE)) {
- if ((Device->Alloc & GDS_ALLOC_IRAM) || ((Device->Alloc & GDS_ALLOC_IRAM_SPI) && Device->IF == GDS_IF_SPI)) {
- heap_caps_calloc( 1, Device->FramebufferSize, MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA );
- } else {
- Device->Framebuffer = calloc( 1, Device->FramebufferSize );
- }
- NullCheck( Device->Framebuffer, return false );
- }
-
- bool Res = Device->Init( Device );
- if (!Res) free(Device->Framebuffer);
- return Res;
- }
- void GDS_SetContrast( struct GDS_Device* Device, uint8_t Contrast ) { if (Device->SetContrast) Device->SetContrast( Device, Contrast); }
- void GDS_SetHFlip( struct GDS_Device* Device, bool On ) { if (Device->SetHFlip) Device->SetHFlip( Device, On ); }
- void GDS_SetVFlip( struct GDS_Device* Device, bool On ) { if (Device->SetVFlip) Device->SetVFlip( Device, On ); }
- void GDS_SetDirty( struct GDS_Device* Device ) { Device->Dirty = true; }
- int GDS_GetWidth( struct GDS_Device* Device ) { return Device->Width; }
- int GDS_GetHeight( struct GDS_Device* Device ) { return Device->Height; }
- int GDS_GetDepth( struct GDS_Device* Device ) { return Device->Depth; }
- void GDS_DisplayOn( struct GDS_Device* Device ) { if (Device->DisplayOn) Device->DisplayOn( Device ); }
- void GDS_DisplayOff( struct GDS_Device* Device ) { if (Device->DisplayOff) Device->DisplayOff( Device ); }
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