mirror of
https://github.com/sle118/squeezelite-esp32.git
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223 lines
7.7 KiB
C
223 lines
7.7 KiB
C
/*
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* (c) Philippe G. 2019, philippe_44@outlook.com
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*
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* This software is released under the MIT License.
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* https://opensource.org/licenses/MIT
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*
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*/
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#ifndef _GDS_PRIVATE_H_
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#define _GDS_PRIVATE_H_
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#include <stdint.h>
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#include <stdbool.h>
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#include "esp_attr.h"
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#include "gds.h"
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#include "gds_err.h"
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#define GDS_ALLOC_NONE 0x80
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#define GDS_ALLOC_IRAM 0x01
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#define GDS_ALLOC_IRAM_SPI 0x02
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#define GDS_CLIPDEBUG_NONE 0
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#define GDS_CLIPDEBUG_WARNING 1
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#define GDS_CLIPDEBUG_ERROR 2
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#if CONFIG_GDS_CLIPDEBUG == GDS_CLIPDEBUG_NONE
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/*
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* Clip silently with no console output.
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*/
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#define ClipDebug(x, y)
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#elif CONFIG_GDS_CLIPDEBUG == GDS_CLIPDEBUG_WARNING
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/*
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* Log clipping to the console as a warning.
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*/
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#define ClipDebug(x, y) \
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{ ESP_LOGW(__FUNCTION__, "Line %d: Pixel at %d, %d CLIPPED", __LINE__, x, y); }
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#elif CONFIG_GDS_CLIPDEBUG == GDS_CLIPDEBUG_ERROR
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/*
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* Log clipping as an error to the console.
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* Also invokes an abort with stack trace.
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*/
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#define ClipDebug(x, y) \
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{ \
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ESP_LOGE(__FUNCTION__, "Line %d: Pixel at %d, %d CLIPPED, ABORT", __LINE__, x, y); \
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abort(); \
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}
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#endif
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#define GDS_ALWAYS_INLINE __attribute__((always_inline))
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#define MAX_LINES 8
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#if !defined BIT
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#define BIT(n) (1 << (n))
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#endif
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struct GDS_Device;
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struct GDS_FontDef;
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/*
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* These can optionally return a succeed/fail but are as of yet unused in the driver.
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*/
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typedef bool (*WriteCommandProc)(struct GDS_Device* Device, uint8_t Command);
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typedef bool (*WriteDataProc)(struct GDS_Device* Device, const uint8_t* Data, size_t DataLength);
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struct spi_device_t;
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typedef struct spi_device_t* spi_device_handle_t;
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#define GDS_IF_SPI 0
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#define GDS_IF_I2C 1
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struct GDS_Device {
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uint8_t IF;
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int8_t RSTPin;
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struct {
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int8_t Pin, Channel;
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int PWM;
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} Backlight;
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union {
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// I2C Specific
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struct {
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uint8_t Address;
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};
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// SPI specific
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struct {
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spi_device_handle_t SPIHandle;
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int8_t CSPin;
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};
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};
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// cooked text mode
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struct {
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int16_t Y, Space;
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const struct GDS_FontDef* Font;
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} Lines[MAX_LINES];
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uint16_t Width, TextWidth;
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uint16_t Height;
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uint8_t Depth, Mode;
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uint8_t Alloc;
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uint8_t* Framebuffer;
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uint32_t FramebufferSize;
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bool Dirty;
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// default fonts when using direct draw
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const struct GDS_FontDef* Font;
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bool FontForceProportional;
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bool FontForceMonospace;
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// various driver-specific method
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// must always provide
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bool (*Init)(struct GDS_Device* Device);
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void (*Update)(struct GDS_Device* Device);
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// may provide if supported
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void (*SetContrast)(struct GDS_Device* Device, uint8_t Contrast);
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void (*DisplayOn)(struct GDS_Device* Device);
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void (*DisplayOff)(struct GDS_Device* Device);
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void (*SetLayout)(struct GDS_Device* Device, struct GDS_Layout* Layout);
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// must provide for depth other than 1 (vertical) and 4 (may provide for optimization)
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void (*DrawPixelFast)(struct GDS_Device* Device, int X, int Y, int Color);
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void (*DrawBitmapCBR)(struct GDS_Device* Device, uint8_t* Data, int Width, int Height, int Color);
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// may provide for optimization
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void (*DrawRGB)(struct GDS_Device* Device, uint8_t* Image, int x, int y, int Width, int Height, int RGB_Mode);
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void (*ClearWindow)(struct GDS_Device* Device, int x1, int y1, int x2, int y2, int Color);
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// may provide for tweaking
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void (*SPIParams)(int Speed, uint8_t* mode, uint16_t* CS_pre, uint8_t* CS_post);
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// interface-specific methods
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WriteCommandProc WriteCommand;
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WriteDataProc WriteData;
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// 32 bytes for whatever the driver wants (should be aligned as it's 32 bits)
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uint32_t Private[8];
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};
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bool GDS_Reset(struct GDS_Device* Device);
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bool GDS_Init(struct GDS_Device* Device);
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static inline bool IsPixelVisible(struct GDS_Device* Device, int x, int y) {
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bool Result = ((x >= 0) && (x < Device->Width) && (y >= 0) && (y < Device->Height)) ? true : false;
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#if CONFIG_GDS_CLIPDEBUG > 0
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if(Result == false) { ClipDebug(x, y); }
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#endif
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return Result;
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}
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static inline void DrawPixel1Fast(struct GDS_Device* Device, int X, int Y, int Color) {
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uint32_t YBit = (Y & 0x07);
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uint8_t* FBOffset;
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/*
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* We only need to modify the Y coordinate since the pitch
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* of the screen is the same as the width.
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* Dividing Y by 8 gives us which row the pixel is in but not
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* the bit position.
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*/
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Y >>= 3;
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FBOffset = Device->Framebuffer + ((Y * Device->Width) + X);
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if(Color == GDS_COLOR_XOR) {
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*FBOffset ^= BIT(YBit);
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} else {
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*FBOffset = (Color == GDS_COLOR_BLACK) ? *FBOffset & ~BIT(YBit) : *FBOffset | BIT(YBit);
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}
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}
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static inline void DrawPixel4Fast(struct GDS_Device* Device, int X, int Y, int Color) {
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uint8_t* FBOffset = Device->Framebuffer + ((Y * Device->Width >> 1) + (X >> 1));
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*FBOffset = X & 0x01 ? (*FBOffset & 0x0f) | ((Color & 0x0f) << 4) : ((*FBOffset & 0xf0) | (Color & 0x0f));
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}
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static inline void DrawPixel8Fast(struct GDS_Device* Device, int X, int Y, int Color) { Device->Framebuffer[Y * Device->Width + X] = Color; }
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// assumes that Color is 16 bits R..RG..GB..B from MSB to LSB and FB wants 1st serialized byte to start with R
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static inline void DrawPixel16Fast(struct GDS_Device* Device, int X, int Y, int Color) {
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uint16_t* FBOffset = (uint16_t*)Device->Framebuffer + Y * Device->Width + X;
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*FBOffset = __builtin_bswap16(Color);
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}
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// assumes that Color is 18 bits RGB from MSB to LSB RRRRRRGGGGGGBBBBBB, so byte[0] is B
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// FB is 3-bytes packets and starts with R for serialization so 0,1,2 ... = xxRRRRRR xxGGGGGG xxBBBBBB
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static inline void DrawPixel18Fast(struct GDS_Device* Device, int X, int Y, int Color) {
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uint8_t* FBOffset = Device->Framebuffer + (Y * Device->Width + X) * 3;
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*FBOffset++ = Color >> 12;
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*FBOffset++ = (Color >> 6) & 0x3f;
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*FBOffset = Color & 0x3f;
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}
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// assumes that Color is 24 bits RGB from MSB to LSB RRRRRRRRGGGGGGGGBBBBBBBB, so byte[0] is B
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// FB is 3-bytes packets and starts with R for serialization so 0,1,2 ... = RRRRRRRR GGGGGGGG BBBBBBBB
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static inline void DrawPixel24Fast(struct GDS_Device* Device, int X, int Y, int Color) {
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uint8_t* FBOffset = Device->Framebuffer + (Y * Device->Width + X) * 3;
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*FBOffset++ = Color >> 16;
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*FBOffset++ = Color >> 8;
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*FBOffset = Color;
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}
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static inline void IRAM_ATTR DrawPixelFast(struct GDS_Device* Device, int X, int Y, int Color) {
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if(Device->DrawPixelFast)
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Device->DrawPixelFast(Device, X, Y, Color);
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else if(Device->Depth == 4)
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DrawPixel4Fast(Device, X, Y, Color);
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else if(Device->Depth == 1)
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DrawPixel1Fast(Device, X, Y, Color);
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else if(Device->Depth == 16)
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DrawPixel16Fast(Device, X, Y, Color);
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else if(Device->Depth == 24 && Device->Mode == GDS_RGB666)
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DrawPixel18Fast(Device, X, Y, Color);
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else if(Device->Depth == 24 && Device->Mode == GDS_RGB888)
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DrawPixel24Fast(Device, X, Y, Color);
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else if(Device->Depth == 8)
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DrawPixel8Fast(Device, X, Y, Color);
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}
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static inline void IRAM_ATTR DrawPixel(struct GDS_Device* Device, int x, int y, int Color) {
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if(IsPixelVisible(Device, x, y) == true) { DrawPixelFast(Device, x, y, Color); }
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}
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#endif |