#ifndef CAMERA_H
#define CAMERA_H

#include "legato.h"
#include <termios.h>

#define VC0706_RESP_PREFIX 0x76
#define VC0706_PREFIX 0x56
#define VC0706_RESET  0x26
#define VC0706_GEN_VERSION 0x11
#define VC0706_SET_PORT 0x24
#define VC0706_READ_FBUF 0x32
#define VC0706_GET_FBUF_LEN 0x34
#define VC0706_FBUF_CTRL 0x36
#define VC0706_DOWNSIZE_CTRL 0x54
#define VC0706_DOWNSIZE_STATUS 0x55
#define VC0706_READ_DATA 0x30
#define VC0706_WRITE_DATA 0x31
#define VC0706_COMM_MOTION_CTRL 0x37
#define VC0706_COMM_MOTION_STATUS 0x38
#define VC0706_COMM_MOTION_DETECTED 0x39
#define VC0706_MOTION_CTRL 0x42
#define VC0706_MOTION_STATUS 0x43
#define VC0706_TVOUT_CTRL 0x44
#define VC0706_OSD_ADD_CHAR 0x45

#define VC0706_STOPCURRENTFRAME 0x0
#define VC0706_STOPNEXTFRAME 0x1
#define VC0706_RESUMEFRAME 0x3
#define VC0706_STEPFRAME 0x2

#define VC0706_640x480 0x00
#define VC0706_320x240 0x11
#define VC0706_160x120 0x22

#define VC0706_MOTIONCONTROL 0x0
#define VC0706_UARTMOTION 0x01
#define VC0706_ACTIVATEMOTION 0x01

#define VC0706_SET_ZOOM 0x52
#define VC0706_GET_ZOOM 0x53

#define CAM_BUFF_SIZE 100
#define CAM_BLOCK_SIZE 32
#define CAM_DELAY 10
#define CAM_SERIAL 0
#define CAM_BAUD_RATE 38400
#define TTY_TIMEOUT 5000

static const char TTY_PATH[] = "/dev/ttyHS0";

typedef struct {
  int fd; // file descriptor for the serial port
  uint8_t serialNum; // camera serial number
  uint8_t buff[CAM_BUFF_SIZE]; // uint8_t array to store camera data
  uint8_t bufferLen; // current length of data in buffer
  uint16_t frameptr;
} Camera;

// File stream functions for reading photos
LE_SHARED bool cam_snapshotToFile (Camera *cam, char *path,uint8_t imgSize);
bool cam_readImageToFile (Camera *cam, char *path);
bool cam_readImageBlock (Camera *cam, FILE *filePtr);
uint8_t cam_getImageBlockSize (int jpgLen);

// Higher level commands
LE_SHARED bool cam_setPTZ (Camera *cam, uint16_t wz, uint16_t hz, uint16_t pan, uint16_t tilt);
LE_SHARED bool cam_getPTZ (Camera *cam, uint16_t *w, uint16_t *h, uint16_t *wz, uint16_t *hz, uint16_t *pan, uint16_t *tilt);
LE_SHARED bool cam_setCompression (Camera *cam, uint8_t c);
LE_SHARED uint8_t cam_getCompression (Camera *cam);
LE_SHARED bool cam_setMotionStatus (Camera *cam, uint8_t x, uint8_t d1, uint8_t d2);
LE_SHARED bool cam_setMotionDetect (Camera *cam, bool flag);
LE_SHARED bool cam_motionDetected (Camera *cam);
LE_SHARED uint8_t cam_getMotionStatus (Camera *cam, uint8_t x);
LE_SHARED bool cam_getMotionDetect (Camera *cam);
LE_SHARED bool cam_setImageSize (Camera *cam,uint8_t x);
LE_SHARED uint8_t cam_getImageSize (Camera *cam);
LE_SHARED bool cam_setDownsize (Camera *cam, uint8_t newSize);
LE_SHARED uint8_t cam_getDownsize (Camera *cam);
LE_SHARED uint8_t cam_available (Camera *cam);
LE_SHARED char *cam_getVersion (Camera *cam);
LE_SHARED uint32_t cam_frameLength (Camera *cam);
LE_SHARED bool cam_resumeVideo (Camera *cam);
LE_SHARED uint8_t *cam_readPicture (Camera *cam, uint8_t n);
LE_SHARED bool cam_tvOff (Camera *cam);
LE_SHARED bool cam_tvOn(Camera *cam);
LE_SHARED bool cam_reset(Camera *cam);
LE_SHARED bool cam_takePicture(Camera *cam);
LE_SHARED bool cam_frameBuffCtrl(Camera *cam, uint8_t cmd);

// Low level camera commands
bool cam_runCommandFlush (Camera *cam, uint8_t cmd, uint8_t args[], uint8_t nArgs, uint8_t respLen);
bool cam_verifyResponse (Camera *cam, uint8_t cmd);
uint8_t cam_readResponse (Camera *cam, uint8_t nBytes, uint8_t timeout);
bool cam_runCommand (Camera *cam, uint8_t cmd, uint8_t args[], uint8_t nArgs, uint8_t respLen, bool flushFlag);
void cam_sendCommand (Camera *cam, uint8_t cmd, uint8_t args[], uint8_t nArgs);

// Serial/file descriptor helpers
int fd_dataAvail (int fd, int *data);
ssize_t fd_getByte (int fd, uint8_t *data);
LE_SHARED int fd_closeCam (int fd);
LE_SHARED int fd_openCam ();
int fd_openSerial (const char *device, int baud);
speed_t fd_convertBaud (int baud);

#endif