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55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
#pragma once
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#include "esphome/core/defines.h"
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#ifdef USE_RUNTIME_IMAGE_BMP
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#include <algorithm>
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#include <memory>
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#include "image_decoder.h"
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#include "runtime_image.h"
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namespace esphome::runtime_image {
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/**
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* @brief Image decoder specialization for BMP images.
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*/
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class BmpDecoder : public ImageDecoder {
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public:
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/**
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* @brief Construct a new BMP Decoder object.
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*
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* @param image The RuntimeImage to decode the stream into.
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*/
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BmpDecoder(RuntimeImage *image) : ImageDecoder(image) {}
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int HOT decode(uint8_t *buffer, size_t size) override;
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bool is_finished() const override {
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if (this->bits_per_pixel_ == 0) {
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// header not yet received, so dimensions not yet determined
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return false;
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}
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// BMP is finished when we've decoded all pixel data
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return this->paint_index_ >= static_cast<size_t>(this->width_ * this->height_);
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}
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protected:
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size_t current_index_{0};
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size_t paint_index_{0};
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ssize_t width_{0};
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ssize_t height_{0};
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uint16_t bits_per_pixel_{0};
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uint32_t compression_method_{0};
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uint32_t image_data_size_{0};
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uint32_t color_table_entries_{0};
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std::unique_ptr<uint32_t[]> color_table_;
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size_t width_bytes_{0};
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size_t data_offset_{0};
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uint8_t padding_bytes_{0};
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};
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} // namespace esphome::runtime_image
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#endif // USE_RUNTIME_IMAGE_BMP
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