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#ifndef __UNIFIED_CAMERA_ACCESS_H
#define __UNIFIED_CAMERA_ACCESS_H
/**
* \file uca.h
* \brief Abstract camera model
*
* The uca_t structure represents a common interface for cameras regardless of
* their connectivity. Each camera that adheres to this model must provide an
* initialization function that probes the device and sets all function pointers
* to their respective implementation.
*/
#include <stdint.h>
struct uca_t;
/**
* \brief Camera probing and initialization
* \return UCA_ERR_INIT_NOT_FOUND if camera is not found or could not be initialized
*/
typedef uint32_t (*uca_cam_init) (struct uca_t *uca);
/**
* \brief Free camera resouces
*/
typedef uint32_t (*uca_cam_destroy) (struct uca_t *uca);
/**
* \brief Set a property
* \param[in] property_name Name of the property as defined in XXX
* \return UCA_ERR_PROP_INVALID if property is not supported on the camera
*/
typedef uint32_t (*uca_cam_set_property) (struct uca_t *uca, int32_t property, void *data);
/**
* \brief Set a property
* \param[in] property_name Name of the property as defined in XXX
* \return UCA_ERR_PROP_INVALID if property is not supported on the camera
*/
typedef uint32_t (*uca_cam_get_property) (struct uca_t *uca, int32_t property, void *data);
/**
* \brief Acquire one frame
*/
typedef uint32_t (*uca_cam_acquire_image) (struct uca_t *uca, void *buffer);
/**
* \brief Initialize the unified camera access interface
* \return Pointer to a uca_t structure
*/
struct uca_t *uca_init();
/**
* \brief Free resources of the unified camera access interface
*/
void uca_destroy(struct uca_t *uca);
/**
* \brief Convert a property string to the corresponding ID
*/
int32_t uca_get_property_id(const char *property_name);
/**
* \brief Convert a property ID to the corresponding string
*/
const char* uca_get_property_name(int32_t property_id);
#define UCA_NO_ERROR 0
#define UCA_ERR_INIT_NOT_FOUND 1 /**< camera probing or initialization failed */
#define UCA_ERR_PROP_INVALID 1 /**< the requested property is not supported by the camera */
/* The property IDs must start with 0 and must be continuous */
#define UCA_PROP_INVALID -1
#define UCA_PROP_NAME 0
#define UCA_PROP_WIDTH 1
#define UCA_PROP_HEIGHT 2
#define UCA_PROP_X_OFFSET 3
#define UCA_PROP_Y_OFFSET 4
#define UCA_PROP_MAX_WIDTH 5
#define UCA_PROP_MAX_HEIGHT 6
#define UCA_PROP_BITDEPTH 7
#define UCA_PROP_EXPOSURE 8
#define UCA_PROP_DELAY 9
#define UCA_PROP_FRAMERATE 10
#define UCA_PROP_INTERLACE -1
struct uca_t {
/* Function pointers to camera-specific methods */
uca_cam_set_property cam_set_property;
uca_cam_get_property cam_get_property;
uca_cam_acquire_image cam_acquire_image;
/* Private */
uca_cam_destroy cam_destroy;
void *user; /**< private user data to be used by the camera driver */
};
#endif
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