102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
#pragma once
|
|
|
|
#include "esp_err.h"
|
|
|
|
|
|
|
|
struct esp_image_scanner_s;
|
|
/** opaque image scanner object. */
|
|
typedef struct esp_image_scanner_s esp_image_scanner_t;
|
|
|
|
|
|
|
|
typedef enum{
|
|
ESP_CODE_SCANNER_MODE_FAST = 0,
|
|
/* more mode */
|
|
}esp_code_scanner_mode_t;
|
|
|
|
typedef enum{
|
|
ESP_CODE_SCANNER_IMAGE_GRAY = 0,
|
|
ESP_CODE_SCANNER_IMAGE_RGB565,
|
|
ESP_CODE_SCANNER_IMAGE_YUV422,
|
|
/* more image format*/
|
|
}esp_code_scanner_image_format_t;
|
|
|
|
typedef struct
|
|
{
|
|
esp_code_scanner_mode_t mode;
|
|
esp_code_scanner_image_format_t fmt;
|
|
uint32_t width; /*!< iamge width */
|
|
uint32_t height; /*!< iamge height */
|
|
/* more config */
|
|
} esp_code_scanner_config_t;
|
|
|
|
typedef enum{
|
|
ESP_CODE_SCANNER_SYMBOL_CODE39,
|
|
ESP_CODE_SCANNER_SYMBOL_CODE128,
|
|
ESP_CODE_SCANNER_SYMBOL_QR
|
|
}esp_code_scanner_symbol_type_t;
|
|
|
|
|
|
typedef struct esp_code_scanner_symbol_t esp_code_scanner_symbol_t;
|
|
struct esp_code_scanner_symbol_t
|
|
{
|
|
const char *type_name;
|
|
const char *data;
|
|
uint32_t datalen;
|
|
esp_code_scanner_symbol_t* next;
|
|
};
|
|
|
|
|
|
/**
|
|
* @brief Start a code_scanner
|
|
* This function must be the first function to call,
|
|
* and it returns a esp_image_scanner_t pointer that you must use as input to other functions in the interface.
|
|
* This call MUST have a corresponding call to esp_code_scanner_cleanup when the operation is complete.
|
|
*
|
|
* @return
|
|
* - `esp_image_scanner_t`
|
|
* - NULL if any errors
|
|
*/
|
|
esp_image_scanner_t* esp_code_scanner_create();
|
|
|
|
/**
|
|
* @brief Set config of code_scanner
|
|
*
|
|
* @param[in] config The configurations, see `esp_code_scanner_config_t`
|
|
*
|
|
* @return
|
|
* - ESP_OK
|
|
* - ESP_FAIL if any errors
|
|
*/
|
|
esp_err_t esp_code_scanner_set_config(esp_image_scanner_t* scanner, const esp_code_scanner_config_t config);
|
|
|
|
/**
|
|
* @brief Scan image data
|
|
*
|
|
* @param[in] scanner The esp_image_scanner_t
|
|
* @param[in] image_data The image data, only supports grayscale images
|
|
*
|
|
* @return
|
|
* - number of decoded symbol
|
|
*/
|
|
int esp_code_scanner_scan_image(esp_image_scanner_t* scanner, const uint8_t *image_data);
|
|
|
|
/**
|
|
* @brief Release resources: including the instance and configuration
|
|
*
|
|
* @param[in] scanner The esp_code_scanner_handle_t
|
|
*
|
|
*/
|
|
void esp_code_scanner_destroy(esp_image_scanner_t* scanner);
|
|
|
|
/**
|
|
* @brief Get scan results
|
|
*
|
|
* @param[in] scanner The esp_code_scanner_handle_t
|
|
*
|
|
* @return
|
|
* - `const esp_code_scanner_symbol_t`
|
|
* - Returns NULL if no data is recognized
|
|
*/
|
|
const esp_code_scanner_symbol_t esp_code_scanner_result(esp_image_scanner_t* scanner); |