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Move Font glyphs to SPI RAM. (#4485)

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Co-authored-by: Your Name <you@example.com>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
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Fabian 2023-02-26 19:45:30 +01:00 committed by GitHub
parent 86c0e6114f
commit 62459a8ae1
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 17 additions and 8 deletions
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19
esphome/components/display/display_buffer.cpp
View file

@ -256,7 +256,7 @@ void DisplayBuffer::print(int x, int y, Font *font, Color color, TextAlign align
if (glyph_n < 0) {
// Unknown char, skip
ESP_LOGW(TAG, "Encountered character without representation in font: '%c'", text[i]);
if (!font->get_glyphs().empty()) {
if (font->get_glyphs_size() > 0) {
uint8_t glyph_width = font->get_glyphs()[0].glyph_data_->width;
for (int glyph_x = 0; glyph_x < glyph_width; glyph_x++) {
for (int glyph_y = 0; glyph_y < height; glyph_y++)
@ -557,7 +557,7 @@ void Glyph::scan_area(int *x1, int *y1, int *width, int *height) const {
}
int Font::match_next_glyph(const char *str, int *match_length) {
int lo = 0;
int hi = this->glyphs_.size() - 1;
int hi = this->glyphs_size_ - 1;
while (lo != hi) {
int mid = (lo + hi + 1) / 2;
if (this->glyphs_[mid].compare_to(str)) {
@ -583,7 +583,7 @@ void Font::measure(const char *str, int *width, int *x_offset, int *baseline, in
int glyph_n = this->match_next_glyph(str + i, &match_length);
if (glyph_n < 0) {
// Unknown char, skip
if (!this->get_glyphs().empty())
if (this->glyphs_size_ > 0)
x += this->get_glyphs()[0].glyph_data_->width;
i++;
continue;
@ -603,10 +603,17 @@ void Font::measure(const char *str, int *width, int *x_offset, int *baseline, in
*x_offset = min_x;
*width = x - min_x;
}
const std::vector<Glyph> &Font::get_glyphs() const { return this->glyphs_; }
Font::Font(const GlyphData *data, int data_nr, int baseline, int height) : baseline_(baseline), height_(height) {
for (int i = 0; i < data_nr; ++i)
glyphs_.emplace_back(data + i);
ExternalRAMAllocator<Glyph> allocator(ExternalRAMAllocator<Glyph>::ALLOW_FAILURE);
this->glyphs_ = allocator.allocate(data_nr);
if (this->glyphs_ == nullptr) {
ESP_LOGE(TAG, "Could not allocate buffer for Glyphs!");
return;
}
for (int i = 0; i < data_nr; ++i) {
this->glyphs_[i] = Glyph(data + i);
}
this->glyphs_size_ = data_nr;
}
bool Image::get_pixel(int x, int y) const {

6
esphome/components/display/display_buffer.h
View file

@ -526,10 +526,12 @@ class Font {
inline int get_baseline() { return this->baseline_; }
inline int get_height() { return this->height_; }
const std::vector<Glyph> &get_glyphs() const;
Glyph *&get_glyphs() { return this->glyphs_; }
const u_int16_t &get_glyphs_size() const { return this->glyphs_size_; }
protected:
std::vector<Glyph> glyphs_;
Glyph *glyphs_{nullptr};
u_int16_t glyphs_size_;
int baseline_;
int height_;
};