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#ifndef ArduCam_Max7456_h

#define ArduCam_Max7456_h

/******* FROM DATASHEET *******/

#define MAX7456_SELECT 6//SS

#define MAX7456_VSYNC 2//INT0

#define NTSC 0

#define PAL 1

#define MAX7456_MODE_MASK_PAL 0x40 //PAL mask 01000000

#define MAX7456_CENTER_PAL 0x8

#define MAX7456_MODE_MASK_NTCS 0x00 //NTSC mask 00000000 ("|" will do nothing)

#define MAX7456_CENTER_NTSC 0x6

//MAX7456 reg read addresses

#define MAX7456_OSDBL_reg_read 0xec //black level

#define MAX7456_STAT_reg_read  0xa0 //0xa[X] Status

//MAX7456 reg write addresses

#define MAX7456_VM0_reg   0x00

#define MAX7456_VM1_reg   0x01

#define MAX7456_DMM_reg   0x04

#define MAX7456_DMAH_reg  0x05

#define MAX7456_DMAL_reg  0x06

#define MAX7456_DMDI_reg  0x07

#define MAX7456_OSDM_reg  0x0c //not used. Is to set mix

#define MAX7456_OSDBL_reg 0x6c //black level

//MAX7456 reg write addresses to recording NVM process

#define MAX7456_CMM_reg   0x08

#define MAX7456_CMAH_reg  0x09

#define MAX7456_CMAL_reg  0x0a

#define MAX7456_CMDI_reg  0x0b

//DMM commands

#define MAX7456_CLEAR_display 0x04

#define MAX7456_CLEAR_display_vert 0x06

#define MAX7456_INCREMENT_auto 0x03

#define MAX7456_SETBG_local 0x20 //00100000 force local BG to defined brightness level VM1[6:4]

#define MAX7456_END_string 0xff

//VM0 commands mixed with mode NTSC or PAL mode

#define MAX7456_ENABLE_display_vert 0x0c //mask with NTSC/PAL

#define MAX7456_RESET 0x02 //mask with NTSC/PAL

#define MAX7456_DISABLE_display 0x00 //mask with NTSC/PAL

//VM0 command modifiers

#define MAX7456_SYNC_autosync 0x10

#define MAX7456_SYNC_internal 0x30

#define MAX7456_SYNC_external 0x20

//VM1 command modifiers

#define MAX7456_WHITE_level_80 0x03

#define MAX7456_WHITE_level_90 0x02

#define MAX7456_WHITE_level_100 0x01

#define MAX7456_WHITE_level_120 0x00

#define NVM_ram_size 0x36

#define WRITE_nvr 0xa0

#define STATUS_reg_nvr_busy 0x20

//If PAL

#ifdef isPAL

  #define MAX7456_screen_size 480 //16x30

  #define MAX7456_screen_rows 15

#else

  #define MAX7456_screen_size 390 //13x30

  #define MAX7456_screen_rows 12

#endif

//------------------ the OSD class -----------------------------------------------

class OSD: public BetterStream

{

  public:

    OSD(void);

    void init(void);

    void clear(void);

    void plug(void);

    void setPanel(uint8_t start_col, uint8_t start_row);

    void openPanel(void);

    void closePanel(void);

    void control(uint8_t ctrl);

    void detectMode(void);

    void setMode(int mode);

    void openSingle(uint8_t x, uint8_t y);

    int getMode(void);

    int getCenter(void);

    virtual int     available(void);

    virtual int     read(void);

    virtual int     peek(void);

    virtual void    flush(void);

    virtual size_t write(uint8_t c);

    void write_NVM(int font_count, uint8_t *character_bitmap);

    using BetterStream::write;

  private:

    uint8_t start_col, start_row, col, row, video_mode, video_center;

};

#endif