/** @file
    Definition of r_device struct.
*/

#ifndef INCLUDE_R_DEVICE_H_
#define INCLUDE_R_DEVICE_H_

/** Supported modulation types. */
enum modulation_types {
    OOK_PULSE_MANCHESTER_ZEROBIT = 3,  ///< Manchester encoding. Hardcoded zerobit. Rising Edge = 0, Falling edge = 1.
    OOK_PULSE_PCM_RZ             = 4,  ///< Pulse Code Modulation with Return-to-Zero encoding, Pulse = 0, No pulse = 1.
    OOK_PULSE_PPM                = 5,  ///< Pulse Position Modulation. Short gap = 0, Long = 1.
    OOK_PULSE_PWM                = 6,  ///< Pulse Width Modulation with precise timing parameters.
    OOK_PULSE_PIWM_RAW           = 8,  ///< Level shift for each bit. Short interval = 1, Long = 0.
    OOK_PULSE_PIWM_DC            = 11, ///< Level shift for each bit. Short interval = 1, Long = 0.
    OOK_PULSE_DMC                = 9,  ///< Level shift within the clock cycle.
    OOK_PULSE_PWM_OSV1           = 10, ///< Pulse Width Modulation. Oregon Scientific v1.
    OOK_PULSE_NRZS               = 12, ///< NRZS modulation
    FSK_DEMOD_MIN_VAL            = 16, ///< Dummy. FSK demodulation must start at this value.
    FSK_PULSE_PCM                = 16, ///< FSK, Pulse Code Modulation.
    FSK_PULSE_PWM                = 17, ///< FSK, Pulse Width Modulation. Short pulses = 1, Long = 0.
    FSK_PULSE_MANCHESTER_ZEROBIT = 18, ///< FSK, Manchester encoding.
};

/** Decoders should return n>0 for n packets successfully decoded,
    an ABORT code if the bitbuffer is no applicable,
    or a FAIL code if the message is malformed. */
enum decode_return_codes {
    DECODE_FAIL_OTHER   = 0, ///< legacy, do not use
    /** Bitbuffer row count or row length is wrong for this sensor. */
    DECODE_ABORT_LENGTH = -1,
    DECODE_ABORT_EARLY  = -2,
    /** Message Integrity Check failed: e.g. checksum/CRC doesn't validate. */
    DECODE_FAIL_MIC     = -3,
    DECODE_FAIL_SANITY  = -4,
};

struct bitbuffer;
struct data;

/** Device protocol decoder struct. */
typedef struct r_device {
    unsigned protocol_num; ///< fixed sequence number, assigned in main().

    /* information provided by each decoder */
    char *name;
    unsigned modulation;
    float short_width;
    float long_width;
    float reset_limit;
    float gap_limit;
    float sync_width;
    float tolerance;
    int (*decode_fn)(struct r_device *decoder, struct bitbuffer *bitbuffer);
    struct r_device *(*create_fn)(char *args);
    unsigned disabled;
    char **fields; ///< List of fields this decoder produces; required for CSV output. NULL-terminated.

    /* public for each decoder */
    int verbose;
    int verbose_bits;
    void (*output_fn)(struct r_device *decoder, struct data *data);

    /* Decoder results / statistics */
    unsigned decode_events;
    unsigned decode_ok;
    unsigned decode_messages;
    unsigned decode_fails[5];

    /* private for flex decoder and output callback */
    void *decode_ctx;
    void *output_ctx;
} r_device;

#endif /* INCLUDE_R_DEVICE_H_ */