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Added 332 color conversion and RGB/BGR/GRB formats (#1381)

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SenexCrenshaw 2020-11-19 15:38:00 -05:00 committed by GitHub
parent b5e6ae0d69
commit 9d2b0b4e03
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 90 additions and 0 deletions
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esphome/core/color.h
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@ -6,6 +6,7 @@
namespace esphome {
inline static uint8_t esp_scale8(uint8_t i, uint8_t scale) { return (uint16_t(i) * (1 + uint16_t(scale))) / 256; }
inline static uint8_t esp_scale(uint8_t i, uint8_t scale, uint8_t max_value = 255) { return (max_value * i / scale); }
struct Color {
union {
@ -30,6 +31,8 @@ struct Color {
uint8_t raw[4];
uint32_t raw_32;
};
enum ColorOrder : uint8_t { COLOR_ORDER_RGB = 0, COLOR_ORDER_BGR = 1, COLOR_ORDER_GRB = 2 };
enum ColorBitness : uint8_t { COLOR_BITNESS_888 = 0, COLOR_BITNESS_565 = 1, COLOR_BITNESS_332 = 2 };
inline Color() ALWAYS_INLINE : r(0), g(0), b(0), w(0) {} // NOLINT
inline Color(float red, float green, float blue) ALWAYS_INLINE : r(uint8_t(red * 255)),
g(uint8_t(green * 255)),
@ -43,6 +46,60 @@ struct Color {
g((colorcode >> 8) & 0xFF),
b((colorcode >> 0) & 0xFF),
w((colorcode >> 24) & 0xFF) {}
inline Color(uint32_t colorcode, ColorOrder color_order, ColorBitness color_bitness = ColorBitness::COLOR_BITNESS_888,
bool right_bit_aligned = true) {
uint8_t first_color, second_color, third_color;
uint8_t first_bits = 0;
uint8_t second_bits = 0;
uint8_t third_bits = 0;
switch (color_bitness) {
case COLOR_BITNESS_888:
first_bits = 8;
second_bits = 8;
third_bits = 8;
break;
case COLOR_BITNESS_565:
first_bits = 5;
second_bits = 6;
third_bits = 5;
break;
case COLOR_BITNESS_332:
first_bits = 3;
second_bits = 3;
third_bits = 2;
break;
}
first_color = right_bit_aligned ? esp_scale(((colorcode >> (second_bits + third_bits)) & ((1 << first_bits) - 1)),
((1 << first_bits) - 1))
: esp_scale(((colorcode >> 16) & 0xFF), (1 << first_bits) - 1);
second_color = right_bit_aligned
? esp_scale(((colorcode >> third_bits) & ((1 << second_bits) - 1)), ((1 << second_bits) - 1))
: esp_scale(((colorcode >> 8) & 0xFF), ((1 << second_bits) - 1));
third_color = (right_bit_aligned ? esp_scale(((colorcode >> 0) & 0xFF), ((1 << third_bits) - 1))
: esp_scale(((colorcode >> 0) & 0xFF), (1 << third_bits) - 1));
switch (color_order) {
case COLOR_ORDER_RGB:
this->r = first_color;
this->g = second_color;
this->b = third_color;
break;
case COLOR_ORDER_BGR:
this->b = first_color;
this->g = second_color;
this->r = third_color;
break;
case COLOR_ORDER_GRB:
this->g = first_color;
this->r = second_color;
this->b = third_color;
break;
}
}
inline bool is_on() ALWAYS_INLINE { return this->raw_32 != 0; }
inline Color &operator=(const Color &rhs) ALWAYS_INLINE {
this->r = rhs.r;
@ -140,7 +197,40 @@ struct Color {
Color fade_to_black(uint8_t amnt) { return *this * amnt; }
Color lighten(uint8_t delta) { return *this + delta; }
Color darken(uint8_t delta) { return *this - delta; }
uint8_t to_332(ColorOrder color_order = ColorOrder::COLOR_ORDER_RGB) const {
uint16_t red_color, green_color, blue_color;
red_color = esp_scale8(this->red, ((1 << 3) - 1));
green_color = esp_scale8(this->green, ((1 << 3) - 1));
blue_color = esp_scale8(this->blue, (1 << 2) - 1);
switch (color_order) {
case COLOR_ORDER_RGB:
return red_color << 5 | green_color << 2 | blue_color;
case COLOR_ORDER_BGR:
return blue_color << 6 | green_color << 3 | red_color;
case COLOR_ORDER_GRB:
return green_color << 5 | red_color << 2 | blue_color;
}
return 0;
}
uint16_t to_565(ColorOrder color_order = ColorOrder::COLOR_ORDER_RGB) const {
uint16_t red_color, green_color, blue_color;
red_color = esp_scale8(this->red, ((1 << 5) - 1));
green_color = esp_scale8(this->green, ((1 << 6) - 1));
blue_color = esp_scale8(this->blue, (1 << 5) - 1);
switch (color_order) {
case COLOR_ORDER_RGB:
return red_color << 11 | green_color << 5 | blue_color;
case COLOR_ORDER_BGR:
return blue_color << 11 | green_color << 5 | red_color;
case COLOR_ORDER_GRB:
return green_color << 10 | red_color << 5 | blue_color;
}
return 0;
}
uint32_t to_rgb_565() const {
uint32_t color565 =
(esp_scale8(this->red, 31) << 11) | (esp_scale8(this->green, 63) << 5) | (esp_scale8(this->blue, 31) << 0);