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squeezelite-esp32/components/display/core/gds_draw.c

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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 <stdio.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <math.h>
#include <esp_attr.h>
#include "gds_private.h"
#include "gds.h"
#include "gds_draw.h"
static const unsigned char BitReverseTable256[] = {0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF};
__attribute__((always_inline)) static inline void SwapInt(int* a, int* b) {
int Temp = *b;
*b = *a;
*a = Temp;
}
void IRAM_ATTR GDS_DrawPixelFast(struct GDS_Device* Device, int X, int Y, int Color) { DrawPixelFast(Device, X, Y, Color); }
void IRAM_ATTR GDS_DrawPixel(struct GDS_Device* Device, int X, int Y, int Color) { DrawPixel(Device, X, Y, Color); }
void GDS_DrawHLine(struct GDS_Device* Device, int x, int y, int Width, int Color) {
int XEnd = x + Width;
Device->Dirty = true;
if(x < 0) x = 0;
if(XEnd >= Device->Width) XEnd = Device->Width - 1;
if(y < 0)
y = 0;
else if(y >= Device->Height)
y = Device->Height - 1;
for(; x < XEnd; x++) DrawPixelFast(Device, x, y, Color);
}
void GDS_DrawVLine(struct GDS_Device* Device, int x, int y, int Height, int Color) {
int YEnd = y + Height;
Device->Dirty = true;
if(x < 0) x = 0;
if(x >= Device->Width) x = Device->Width - 1;
if(y < 0)
y = 0;
else if(YEnd >= Device->Height)
YEnd = Device->Height - 1;
for(; y < YEnd; y++) DrawPixel(Device, x, y, Color);
}
static inline void DrawWideLine(struct GDS_Device* Device, int x0, int y0, int x1, int y1, int Color) {
int dx = (x1 - x0);
int dy = (y1 - y0);
int Error = 0;
int Incr = 1;
int x = x0;
int y = y0;
if(dy < 0) {
Incr = -1;
dy = -dy;
}
Error = (dy * 2) - dx;
for(; x < x1; x++) {
if(IsPixelVisible(Device, x, y) == true) { DrawPixelFast(Device, x, y, Color); }
if(Error > 0) {
Error -= (dx * 2);
y += Incr;
}
Error += (dy * 2);
}
}
static inline void DrawTallLine(struct GDS_Device* Device, int x0, int y0, int x1, int y1, int Color) {
int dx = (x1 - x0);
int dy = (y1 - y0);
int Error = 0;
int Incr = 1;
int x = x0;
int y = y0;
if(dx < 0) {
Incr = -1;
dx = -dx;
}
Error = (dx * 2) - dy;
for(; y < y1; y++) {
if(IsPixelVisible(Device, x, y) == true) { DrawPixelFast(Device, x, y, Color); }
if(Error > 0) {
Error -= (dy * 2);
x += Incr;
}
Error += (dx * 2);
}
}
void GDS_DrawLine(struct GDS_Device* Device, int x0, int y0, int x1, int y1, int Color) {
if(x0 == x1) {
GDS_DrawVLine(Device, x0, y0, (y1 - y0), Color);
} else if(y0 == y1) {
GDS_DrawHLine(Device, x0, y0, (x1 - x0), Color);
} else {
Device->Dirty = true;
if(abs(x1 - x0) > abs(y1 - y0)) {
/* Wide ( run > rise ) */
if(x0 > x1) {
SwapInt(&x0, &x1);
SwapInt(&y0, &y1);
}
DrawWideLine(Device, x0, y0, x1, y1, Color);
} else {
/* Tall ( rise > run ) */
if(y0 > y1) {
SwapInt(&y0, &y1);
SwapInt(&x0, &x1);
}
DrawTallLine(Device, x0, y0, x1, y1, Color);
}
}
}
void GDS_DrawBox(struct GDS_Device* Device, int x1, int y1, int x2, int y2, int Color, bool Fill) {
int Width = (x2 - x1);
int Height = (y2 - y1);
Device->Dirty = true;
if(Fill == false) {
/* Top side */
GDS_DrawHLine(Device, x1, y1, Width, Color);
/* Bottom side */
GDS_DrawHLine(Device, x1, y1 + Height, Width, Color);
/* Left side */
GDS_DrawVLine(Device, x1, y1, Height, Color);
/* Right side */
GDS_DrawVLine(Device, x1 + Width, y1, Height, Color);
} else {
/* Fill the box by drawing horizontal lines */
for(; y1 <= y2; y1++) { GDS_DrawHLine(Device, x1, y1, Width, Color); }
}
}
/****************************************************************************************
* Process graphic display data from column-oriented data (MSbit first)
*/
void GDS_DrawBitmapCBR(struct GDS_Device* Device, uint8_t* Data, int Width, int Height, int Color) {
if(!Height) Height = Device->Height;
if(!Width) Width = Device->Width;
if(Device->DrawBitmapCBR) {
Device->DrawBitmapCBR(Device, Data, Width, Height, Color);
} else if(Device->Depth == 1) {
Height >>= 3;
// need to do row/col swap and bit-reverse
for(int r = 0; r < Height; r++) {
uint8_t *optr = Device->Framebuffer + r * Device->Width, *iptr = Data + r;
for(int c = Width; --c >= 0;) {
*optr++ = BitReverseTable256[*iptr];
iptr += Height;
}
}
} else if(Device->Depth == 4) {
uint8_t* optr = Device->Framebuffer;
int LineLen = Device->Width >> 1;
Height >>= 3;
Color &= 0x0f;
for(int i = Width * Height, r = 0, c = 0; --i >= 0;) {
uint8_t Byte = BitReverseTable256[*Data++];
// we need to linearize code to let compiler better optimize
if(c & 0x01) {
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0x0f) | (((Byte & 0x01) * Color) << 4);
optr += LineLen;
} else {
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
Byte >>= 1;
*optr = (*optr & 0xf0) | (((Byte & 0x01) * Color));
optr += LineLen;
}
// end of a column, move to next one
if(++r == Height) {
c++;
r = 0;
optr = Device->Framebuffer + (c >> 1);
}
}
} else if(Device->Depth == 8) {
uint8_t* optr = Device->Framebuffer;
int LineLen = Device->Width;
Height >>= 3;
for(int i = Width * Height, r = 0, c = 0; --i >= 0;) {
uint8_t Byte = BitReverseTable256[*Data++];
// we need to linearize code to let compiler better optimize
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
// end of a column, move to next one
if(++r == Height) {
c++;
r = 0;
optr = Device->Framebuffer + c;
}
}
} else if(Device->Depth == 16) {
uint16_t* optr = (uint16_t*)Device->Framebuffer;
int LineLen = Device->Width;
Height >>= 3;
Color = __builtin_bswap16(Color);
for(int i = Width * Height, r = 0, c = 0; --i >= 0;) {
uint8_t Byte = BitReverseTable256[*Data++];
// we need to linearize code to let compiler better optimize
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
*optr = ((Byte & 0x01) * Color);
optr += LineLen;
// end of a column, move to next one
if(++r == Height) {
c++;
r = 0;
optr = (uint16_t*)Device->Framebuffer + c;
}
}
} else if(Device->Depth == 24) {
uint8_t* optr = Device->Framebuffer;
int LineLen = Device->Width * 3;
Height >>= 3;
if(Device->Mode == GDS_RGB666) Color = ((Color << 4) & 0xff0000) | ((Color << 2) & 0xff00) | (Color & 0x00ff);
for(int i = Width * Height, r = 0, c = 0; --i >= 0;) {
uint8_t Byte = BitReverseTable256[*Data++];
// we need to linearize code to let compiler better optimize
#define SET24(O, D) \
O[0] = (D) >> 16; \
O[1] = (D) >> 8; \
O[2] = (D);
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
Byte >>= 1;
SET24(optr, (Byte & 0x01) * Color);
optr += LineLen;
// end of a column, move to next one
if(++r == Height) {
c++;
r = 0;
optr = Device->Framebuffer + c * 3;
}
}
} else {
Height >>= 3;
// don't know bitdepth, use brute-force solution
for(int i = Width * Height, r = 0, c = 0; --i >= 0;) {
uint8_t Byte = *Data++;
DrawPixelFast(Device, c, (r << 3) + 7, (Byte & 0x01) * Color);
Byte >>= 1;
DrawPixelFast(Device, c, (r << 3) + 6, (Byte & 0x01) * Color);
Byte >>= 1;
DrawPixelFast(Device, c, (r << 3) + 5, (Byte & 0x01) * Color);
Byte >>= 1;
DrawPixelFast(Device, c, (r << 3) + 4, (Byte & 0x01) * Color);
Byte >>= 1;
DrawPixelFast(Device, c, (r << 3) + 3, (Byte & 0x01) * Color);
Byte >>= 1;
DrawPixelFast(Device, c, (r << 3) + 2, (Byte & 0x01) * Color);
Byte >>= 1;
DrawPixelFast(Device, c, (r << 3) + 1, (Byte & 0x01) * Color);
Byte >>= 1;
DrawPixelFast(Device, c, (r << 3) + 0, (Byte & 0x01) * Color);
if(++r == Height) {
c++;
r = 0;
}
}
/* for better understanding, here is the mundane version
for (int x = 0; x < Width; x++) {
for (int y = 0; y < Height; y++) {
uint8_t Byte = *Data++;
GDSDrawPixel4Fast( Device, x, y * 8 + 0, ((Byte >> 7) & 0x01) * Color );
GDSDrawPixel4Fast( Device, x, y * 8 + 1, ((Byte >> 6) & 0x01) * Color );
GDSDrawPixel4Fast( Device, x, y * 8 + 2, ((Byte >> 5) & 0x01) * Color );
GDSDrawPixel4Fast( Device, x, y * 8 + 3, ((Byte >> 4) & 0x01) * Color );
GDSDrawPixel4Fast( Device, x, y * 8 + 4, ((Byte >> 3) & 0x01) * Color );
GDSDrawPixel4Fast( Device, x, y * 8 + 5, ((Byte >> 2) & 0x01) * Color );
GDSDrawPixel4Fast( Device, x, y * 8 + 6, ((Byte >> 1) & 0x01) * Color );
GDSDrawPixel4Fast( Device, x, y * 8 + 7, ((Byte >> 0) & 0x01) * Color );
}
}
*/
}
Device->Dirty = true;
}
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