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33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/*
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* (c) Philippe G. 2019, philippe_44@outlook.com
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*
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* This software is released under the MIT License.
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* https://opensource.org/licenses/MIT
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*
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*/
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#pragma once
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#include <stdint.h>
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#include "esp_err.h"
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// no progressive JPEG handling
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struct GDS_Device;
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// Fit options for GDS_DrawJPEG
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#define GDS_IMAGE_LEFT 0x00
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#define GDS_IMAGE_CENTER_X 0x01
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#define GDS_IMAGE_RIGHT 0x04
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#define GDS_IMAGE_TOP 0x00
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#define GDS_IMAGE_BOTTOM 0x08
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#define GDS_IMAGE_CENTER_Y 0x02
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#define GDS_IMAGE_CENTER (GDS_IMAGE_CENTER_X | GDS_IMAGE_CENTER_Y)
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#define GDS_IMAGE_FIT 0x10 // re-scale by a factor of 2^N (up to 3)
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// Width and Height can be NULL if you already know them (actual scaling is closest ^2)
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void* GDS_DecodeJPEG(uint8_t *Source, int *Width, int *Height, float Scale, int RGB_Mode); // can be 8, 16 or 24 bits per pixel in return
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void GDS_GetJPEGSize(uint8_t *Source, int *Width, int *Height);
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bool GDS_DrawJPEG( struct GDS_Device* Device, uint8_t *Source, int x, int y, int Fit);
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void GDS_DrawRGB( struct GDS_Device* Device, uint8_t *Image, int x, int y, int Width, int Height, int RGB_Mode );
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