esp-idf/examples/peripherals/lcd/tjpgd/main/decode_image.h
2022-02-14 18:43:50 +08:00

21 lines
704 B
C

/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: CC0-1.0
*/
#pragma once
#include <stdint.h>
#include "esp_err.h"
/**
* @brief Decode the jpeg ``image.jpg`` embedded into the program file into pixel data.
*
* @param pixels A pointer to a pointer for an array of rows, which themselves are an array of pixels.
* Effectively, you can get the pixel data by doing ``decode_image(&myPixels); pixelval=myPixels[ypos][xpos];``
* @return - ESP_ERR_NOT_SUPPORTED if image is malformed or a progressive jpeg file
* - ESP_ERR_NO_MEM if out of memory
* - ESP_OK on succesful decode
*/
esp_err_t decode_image(uint16_t ***pixels);