44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
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#pragma once
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#include <Arduino.h>
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#include "config.h"
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struct ProcessedImage {
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uint8_t* framebuffer; // Palette indices, one byte per pixel
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uint16_t width;
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uint16_t height;
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bool valid;
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};
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class ImagePipeline {
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public:
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// Process single landscape photo
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ProcessedImage process(uint8_t* jpegData, size_t jpegSize);
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// Process portrait pair (two photos side by side)
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ProcessedImage processPortraitPair(uint8_t* jpeg1Data, size_t jpeg1Size,
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uint8_t* jpeg2Data, size_t jpeg2Size);
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void freeImage(ProcessedImage& img);
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private:
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// Decode JPEG into RGB888 buffer in PSRAM
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uint8_t* decodeJpeg(uint8_t* data, size_t size, uint16_t* outWidth, uint16_t* outHeight);
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// Resize RGB buffer to target dimensions (bilinear)
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uint8_t* resize(uint8_t* rgb, uint16_t srcW, uint16_t srcH,
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uint16_t dstW, uint16_t dstH);
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// Center-crop to target aspect ratio
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void centerCrop(uint8_t* rgb, uint16_t srcW, uint16_t srcH,
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uint16_t targetW, uint16_t targetH,
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uint16_t* cropX, uint16_t* cropY,
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uint16_t* cropW, uint16_t* cropH);
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// Floyd-Steinberg dither RGB888 to 6-color palette indices
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uint8_t* dither(uint8_t* rgb, uint16_t width, uint16_t height);
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// Find nearest palette color
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uint8_t findNearest(int r, int g, int b);
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};
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