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Image bit dephts (#1241)

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This commit is contained in:
Guillermo Ruffino 2020-08-11 10:28:30 -03:00
parent 32ae8fc2d0
commit b7352b1345
3 changed files with 79 additions and 70 deletions
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29
esphome/components/display/display_buffer.cpp
View file

@ -204,31 +204,33 @@ void DisplayBuffer::vprintf_(int x, int y, Font *font, Color color, TextAlign al
if (ret > 0)
this->print(x, y, font, color, align, buffer);
}
void DisplayBuffer::image(int x, int y, Image *image) { this->image(x, y, COLOR_ON, image); }
void DisplayBuffer::image(int x, int y, Color color, Image *image, bool invert) {
if (image->get_type() == BINARY) {
void DisplayBuffer::image(int x, int y, Image *image, Color color_on, Color color_off) {
switch (image->get_type()) {
case IMAGE_TYPE_BINARY:
for (int img_x = 0; img_x < image->get_width(); img_x++) {
for (int img_y = 0; img_y < image->get_height(); img_y++) {
if (invert)
this->draw_pixel_at(x + img_x, y + img_y, image->get_pixel(img_x, img_y) ? COLOR_OFF : color);
else
this->draw_pixel_at(x + img_x, y + img_y, image->get_pixel(img_x, img_y) ? color : COLOR_OFF);
this->draw_pixel_at(x + img_x, y + img_y, image->get_pixel(img_x, img_y) ? color_on : color_off);
}
}
} else if (image->get_type() == GRAYSCALE) {
break;
case IMAGE_TYPE_GRAYSCALE:
for (int img_x = 0; img_x < image->get_width(); img_x++) {
for (int img_y = 0; img_y < image->get_height(); img_y++) {
this->draw_pixel_at(x + img_x, y + img_y, image->get_grayscale_pixel(img_x, img_y));
}
}
} else if (image->get_type() == RGB) {
break;
case IMAGE_TYPE_RGB24:
for (int img_x = 0; img_x < image->get_width(); img_x++) {
for (int img_y = 0; img_y < image->get_height(); img_y++) {
this->draw_pixel_at(x + img_x, y + img_y, image->get_color_pixel(img_x, img_y));
}
}
break;
}
}
void DisplayBuffer::get_text_bounds(int x, int y, const char *text, Font *font, TextAlign align, int *x1, int *y1,
int *width, int *height) {
int x_offset, baseline;
@ -463,15 +465,14 @@ Color Image::get_grayscale_pixel(int x, int y) const {
if (x < 0 || x >= this->width_ || y < 0 || y >= this->height_)
return 0;
const uint32_t pos = (x + y * this->width_);
return Color(pgm_read_byte(this->data_start_ + pos) << 24);
const uint8_t gray = pgm_read_byte(this->data_start_ + pos);
return Color(gray | gray << 8 | gray << 16 | gray << 24);
}
int Image::get_width() const { return this->width_; }
int Image::get_height() const { return this->height_; }
ImageType Image::get_type() const { return this->type_; }
Image::Image(const uint8_t *data_start, int width, int height)
: width_(width), height_(height), data_start_(data_start) {}
Image::Image(const uint8_t *data_start, int width, int height, int type)
: width_(width), height_(height), type_((ImageType) type), data_start_(data_start) {}
Image::Image(const uint8_t *data_start, int width, int height, ImageType type)
: width_(width), height_(height), type_(type), data_start_(data_start) {}
DisplayPage::DisplayPage(const display_writer_t &writer) : writer_(writer) {}
void DisplayPage::show() { this->parent_->show_page(this); }

19
esphome/components/display/display_buffer.h
View file

@ -68,7 +68,7 @@ extern const Color COLOR_OFF;
/// Turn the pixel ON.
extern const Color COLOR_ON;
enum ImageType { BINARY = 0, GRAYSCALE = 1, RGB = 2 };
enum ImageType { IMAGE_TYPE_BINARY = 0, IMAGE_TYPE_GRAYSCALE = 1, IMAGE_TYPE_RGB24 = 2 };
enum DisplayRotation {
DISPLAY_ROTATION_0_DEGREES = 0,
@ -262,9 +262,15 @@ class DisplayBuffer {
__attribute__((format(strftime, 5, 0)));
#endif
/// Draw the `image` with the top-left corner at [x,y] to the screen.
void image(int x, int y, Image *image);
void image(int x, int y, Color color, Image *image, bool invert = false);
/** Draw the `image` with the top-left corner at [x,y] to the screen.
*
* @param x The x coordinate of the upper left corner.
* @param y The y coordinate of the upper left corner.
* @param image The image to draw
* @param color_on The color to replace in binary images for the on bits.
* @param color_off The color to replace in binary images for the off bits.
*/
void image(int x, int y, Image *image, Color color_on = COLOR_ON, Color color_off = COLOR_OFF);
/** Get the text bounds of the given string.
*
@ -381,8 +387,7 @@ class Font {
class Image {
public:
Image(const uint8_t *data_start, int width, int height);
Image(const uint8_t *data_start, int width, int height, int type);
Image(const uint8_t *data_start, int width, int height, ImageType type);
bool get_pixel(int x, int y) const;
Color get_color_pixel(int x, int y) const;
Color get_grayscale_pixel(int x, int y) const;
@ -393,7 +398,7 @@ class Image {
protected:
int width_;
int height_;
ImageType type_{BINARY};
ImageType type_;
const uint8_t *data_start_;
};

43
esphome/components/image/__init__.py
View file

@ -4,14 +4,20 @@ from esphome import core
from esphome.components import display, font
import esphome.config_validation as cv
import esphome.codegen as cg
from esphome.const import CONF_FILE, CONF_ID, CONF_RESIZE, CONF_TYPE
from esphome.const import CONF_FILE, CONF_ID, CONF_TYPE, CONF_RESIZE
from esphome.core import CORE, HexInt
_LOGGER = logging.getLogger(__name__)
DEPENDENCIES = ['display']
MULTI_CONF = True
ImageType = {'binary': 0, 'grayscale': 1, 'rgb': 2}
ImageType = display.display_ns.enum('ImageType')
IMAGE_TYPE = {
'BINARY': ImageType.IMAGE_TYPE_BINARY,
'GRAYSCALE': ImageType.IMAGE_TYPE_GRAYSCALE,
'RGB24': ImageType.IMAGE_TYPE_RGB24,
}
Image_ = display.display_ns.class_('Image')
@ -21,7 +27,7 @@ IMAGE_SCHEMA = cv.Schema({
cv.Required(CONF_ID): cv.declare_id(Image_),
cv.Required(CONF_FILE): cv.file_,
cv.Optional(CONF_RESIZE): cv.dimensions,
cv.Optional(CONF_TYPE): cv.string,
cv.Optional(CONF_TYPE, default='BINARY'): cv.enum(IMAGE_TYPE, upper=True),
cv.GenerateID(CONF_RAW_DATA_ID): cv.declare_id(cg.uint8),
})
@ -37,12 +43,17 @@ def to_code(config):
except Exception as e:
raise core.EsphomeError(f"Could not load image file {path}: {e}")
width, height = image.size
if CONF_RESIZE in config:
image.thumbnail(config[CONF_RESIZE])
if CONF_TYPE in config:
if config[CONF_TYPE].startswith('GRAYSCALE'):
width, height = image.size
else:
if width > 500 or height > 500:
_LOGGER.warning("The image you requested is very big. Please consider using"
" the resize parameter.")
if config[CONF_TYPE] == 'GRAYSCALE':
image = image.convert('L', dither=Image.NONE)
pixels = list(image.getdata())
data = [0 for _ in range(height * width)]
@ -50,11 +61,8 @@ def to_code(config):
for pix in pixels:
data[pos] = pix
pos += 1
rhs = [HexInt(x) for x in data]
prog_arr = cg.progmem_array(config[CONF_RAW_DATA_ID], rhs)
cg.new_Pvariable(config[CONF_ID], prog_arr, width, height, ImageType['grayscale'])
elif config[CONF_TYPE].startswith('RGB'):
width, height = image.size
elif config[CONF_TYPE] == 'RGB24':
image = image.convert('RGB')
pixels = list(image.getdata())
data = [0 for _ in range(height * width * 3)]
@ -66,15 +74,9 @@ def to_code(config):
pos += 1
data[pos] = pix[2]
pos += 1
rhs = [HexInt(x) for x in data]
prog_arr = cg.progmem_array(config[CONF_RAW_DATA_ID], rhs)
cg.new_Pvariable(config[CONF_ID], prog_arr, width, height, ImageType['rgb'])
else:
elif config[CONF_TYPE] == 'BINARY':
image = image.convert('1', dither=Image.NONE)
width, height = image.size
if width > 500 or height > 500:
_LOGGER.warning("The image you requested is very big. Please consider using"
" the resize parameter.")
width8 = ((width + 7) // 8) * 8
data = [0 for _ in range(height * width8 // 8)]
for y in range(height):
@ -86,4 +88,5 @@ def to_code(config):
rhs = [HexInt(x) for x in data]
prog_arr = cg.progmem_array(config[CONF_RAW_DATA_ID], rhs)
cg.new_Pvariable(config[CONF_ID], prog_arr, width, height)
cg.new_Pvariable(config[CONF_ID], prog_arr, width, height,
IMAGE_TYPE[config[CONF_TYPE]])