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display: Improve Image rendering by removing usage of virtual functions (#4931)

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Kamil Trzciński 2023-06-14 23:50:24 +02:00 committed by GitHub
parent 035c3ef8fe
commit cef659b0de
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2 changed files with 39 additions and 80 deletions
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101
esphome/components/display/display_buffer.cpp
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@ -15,6 +15,25 @@ static const char *const TAG = "display";
const Color COLOR_OFF(0, 0, 0, 255);
const Color COLOR_ON(255, 255, 255, 255);
static int image_type_to_bpp(ImageType type) {
switch (type) {
case IMAGE_TYPE_BINARY:
return 1;
case IMAGE_TYPE_GRAYSCALE:
return 8;
case IMAGE_TYPE_RGB565:
return 16;
case IMAGE_TYPE_RGB24:
return 24;
case IMAGE_TYPE_RGBA:
return 32;
default:
return 0;
}
}
static int image_type_to_width_stride(int width, ImageType type) { return (width * image_type_to_bpp(type) + 7u) / 8u; }
void Rect::expand(int16_t horizontal, int16_t vertical) {
if (this->is_set() && (this->w >= (-2 * horizontal)) && (this->h >= (-2 * vertical))) {
this->x = this->x - horizontal;
@ -699,78 +718,9 @@ Image::Image(const uint8_t *data_start, int width, int height, ImageType type)
: width_(width), height_(height), type_(type), data_start_(data_start) {}
int Image::get_current_frame() const { return 0; }
bool Animation::get_pixel(int x, int y) const {
if (x < 0 || x >= this->width_ || y < 0 || y >= this->height_)
return false;
const uint32_t width_8 = ((this->width_ + 7u) / 8u) * 8u;
const uint32_t frame_index = this->height_ * width_8 * this->current_frame_;
if (frame_index >= (uint32_t) (this->width_ * this->height_ * this->animation_frame_count_))
return false;
const uint32_t pos = x + y * width_8 + frame_index;
return progmem_read_byte(this->data_start_ + (pos / 8u)) & (0x80 >> (pos % 8u));
}
Color Animation::get_rgba_pixel(int x, int y) const {
if (x < 0 || x >= this->width_ || y < 0 || y >= this->height_)
return Color::BLACK;
const uint32_t frame_index = this->width_ * this->height_ * this->current_frame_;
if (frame_index >= (uint32_t) (this->width_ * this->height_ * this->animation_frame_count_))
return Color::BLACK;
const uint32_t pos = (x + y * this->width_ + frame_index) * 4;
return Color(progmem_read_byte(this->data_start_ + pos + 0), progmem_read_byte(this->data_start_ + pos + 1),
progmem_read_byte(this->data_start_ + pos + 2), progmem_read_byte(this->data_start_ + pos + 3));
}
Color Animation::get_color_pixel(int x, int y) const {
if (x < 0 || x >= this->width_ || y < 0 || y >= this->height_)
return Color::BLACK;
const uint32_t frame_index = this->width_ * this->height_ * this->current_frame_;
if (frame_index >= (uint32_t) (this->width_ * this->height_ * this->animation_frame_count_))
return Color::BLACK;
const uint32_t pos = (x + y * this->width_ + frame_index) * 3;
Color color = Color(progmem_read_byte(this->data_start_ + pos + 0), progmem_read_byte(this->data_start_ + pos + 1),
progmem_read_byte(this->data_start_ + pos + 2));
if (color.b == 1 && color.r == 0 && color.g == 0 && transparent_) {
// (0, 0, 1) has been defined as transparent color for non-alpha images.
// putting blue == 1 as a first condition for performance reasons (least likely value to short-cut the if)
color.w = 0;
} else {
color.w = 0xFF;
}
return color;
}
Color Animation::get_rgb565_pixel(int x, int y) const {
if (x < 0 || x >= this->width_ || y < 0 || y >= this->height_)
return Color::BLACK;
const uint32_t frame_index = this->width_ * this->height_ * this->current_frame_;
if (frame_index >= (uint32_t) (this->width_ * this->height_ * this->animation_frame_count_))
return Color::BLACK;
const uint32_t pos = (x + y * this->width_ + frame_index) * 2;
uint16_t rgb565 =
progmem_read_byte(this->data_start_ + pos + 0) << 8 | progmem_read_byte(this->data_start_ + pos + 1);
auto r = (rgb565 & 0xF800) >> 11;
auto g = (rgb565 & 0x07E0) >> 5;
auto b = rgb565 & 0x001F;
Color color = Color((r << 3) | (r >> 2), (g << 2) | (g >> 4), (b << 3) | (b >> 2));
if (rgb565 == 0x0020 && transparent_) {
// darkest green has been defined as transparent color for transparent RGB565 images.
color.w = 0;
} else {
color.w = 0xFF;
}
return color;
}
Color Animation::get_grayscale_pixel(int x, int y) const {
if (x < 0 || x >= this->width_ || y < 0 || y >= this->height_)
return Color::BLACK;
const uint32_t frame_index = this->width_ * this->height_ * this->current_frame_;
if (frame_index >= (uint32_t) (this->width_ * this->height_ * this->animation_frame_count_))
return Color::BLACK;
const uint32_t pos = (x + y * this->width_ + frame_index);
const uint8_t gray = progmem_read_byte(this->data_start_ + pos);
uint8_t alpha = (gray == 1 && transparent_) ? 0 : 0xFF;
return Color(gray, gray, gray, alpha);
}
Animation::Animation(const uint8_t *data_start, int width, int height, uint32_t animation_frame_count, ImageType type)
: Image(data_start, width, height, type),
animation_data_start_(data_start),
current_frame_(0),
animation_frame_count_(animation_frame_count),
loop_start_frame_(0),
@ -797,12 +747,16 @@ void Animation::next_frame() {
this->loop_current_iteration_ = 1;
this->current_frame_ = 0;
}
this->update_data_start_();
}
void Animation::prev_frame() {
this->current_frame_--;
if (this->current_frame_ < 0) {
this->current_frame_ = this->animation_frame_count_ - 1;
}
this->update_data_start_();
}
void Animation::set_frame(int frame) {
@ -815,6 +769,13 @@ void Animation::set_frame(int frame) {
this->current_frame_ = this->animation_frame_count_ - abs_frame;
}
}
this->update_data_start_();
}
void Animation::update_data_start_() {
const uint32_t image_size = image_type_to_width_stride(this->width_, this->type_) * this->height_;
this->data_start_ = this->animation_data_start_ + image_size * this->current_frame_;
}
DisplayPage::DisplayPage(display_writer_t writer) : writer_(std::move(writer)) {}

18
esphome/components/display/display_buffer.h
View file

@ -532,11 +532,11 @@ class Font {
class Image {
public:
Image(const uint8_t *data_start, int width, int height, ImageType type);
virtual bool get_pixel(int x, int y) const;
virtual Color get_color_pixel(int x, int y) const;
virtual Color get_rgba_pixel(int x, int y) const;
virtual Color get_rgb565_pixel(int x, int y) const;
virtual Color get_grayscale_pixel(int x, int y) const;
bool get_pixel(int x, int y) const;
Color get_color_pixel(int x, int y) const;
Color get_rgba_pixel(int x, int y) const;
Color get_rgb565_pixel(int x, int y) const;
Color get_grayscale_pixel(int x, int y) const;
int get_width() const;
int get_height() const;
ImageType get_type() const;
@ -557,11 +557,6 @@ class Image {
class Animation : public Image {
public:
Animation(const uint8_t *data_start, int width, int height, uint32_t animation_frame_count, ImageType type);
bool get_pixel(int x, int y) const override;
Color get_color_pixel(int x, int y) const override;
Color get_rgba_pixel(int x, int y) const override;
Color get_rgb565_pixel(int x, int y) const override;
Color get_grayscale_pixel(int x, int y) const override;
uint32_t get_animation_frame_count() const;
int get_current_frame() const override;
@ -577,6 +572,9 @@ class Animation : public Image {
void set_loop(uint32_t start_frame, uint32_t end_frame, int count);
protected:
void update_data_start_();
const uint8_t *animation_data_start_;
int current_frame_;
uint32_t animation_frame_count_;
uint32_t loop_start_frame_;