Revert "sound trigger: several data structure updates"

#define ANDROID_SOUND_TRIGGER_H

#include <stdbool.h>

#include <system/audio.h>

#define SOUND_TRIGGER_MAX_STRING_LEN 64 /* max length of strings in properties or

                                           descriptor structs */

#define RECOGNITION_STATUS_ABORT 1

#define RECOGNITION_STATUS_FAILURE 2

#define SOUND_MODEL_STATUS_UPDATED 0

typedef enum {

    SOUND_MODEL_TYPE_UNKNOWN = -1,    /* use for unspecified sound model type */

struct sound_trigger_sound_model {

    sound_trigger_sound_model_type_t type;        /* model type. e.g. SOUND_MODEL_TYPE_KEYPHRASE */

    sound_trigger_uuid_t             uuid;        /* unique sound model ID. */

    sound_trigger_uuid_t             vendor_uuid; /* unique vendor ID. Identifies the engine the

                                                  sound model was build for */

    unsigned int                     data_size;   /* size of opaque model data */

    unsigned int                     data_offset; /* offset of opaque data start from head of struct

                                                    (e.g sizeof struct sound_trigger_sound_model) */

    unsigned int id;                /* keyphrase ID */

    unsigned int recognition_mode;  /* recognition modes supported by this key phrase */

    unsigned int num_users;         /* number of users in the key phrase */

    unsigned int users[SOUND_TRIGGER_MAX_USERS]; /* users ids: (not uid_t but sound trigger

                                                 specific IDs */

    char         locale[SOUND_TRIGGER_MAX_LOCALE_LEN]; /* locale - JAVA Locale style (e.g. en_US) */

    char         text[SOUND_TRIGGER_MAX_STRING_LEN];   /* phrase text in UTF-8 format. */

};

                                                           for capture. A negative value is possible

                                                           (e.g. if key phrase is also available for

                                                           capture */

    int                              capture_preamble_ms;  /* duration in ms of audio captured

                                                            before the start of the trigger.

                                                            0 if none. */

    unsigned int                     data_size;         /* size of opaque event data */

    unsigned int                     data_offset;       /* offset of opaque data start from start of

                                                          this struct (e.g sizeof struct

                                                          sound_trigger_phrase_recognition_event) */

};

/*

 * Confidence level for each user in struct sound_trigger_phrase_recognition_extra

 */

struct sound_trigger_confidence_level {

    unsigned int user_id;   /* user ID */

    unsigned int level;     /* confidence level in percent (0 - 100).

                               - min level for recognition configuration

                               - detected level for recognition event */

};

/*

 * Specialized recognition event for key phrase detection

 */

struct sound_trigger_phrase_recognition_extra {

    unsigned int id;                /* keyphrase ID */

    unsigned int recognition_modes; /* recognition modes used for this keyphrase */

    unsigned int num_levels;        /* number of user confidence levels */

    struct sound_trigger_confidence_level levels[SOUND_TRIGGER_MAX_USERS];

    unsigned int recognition_modes;

    unsigned int num_users;

    unsigned int confidence_levels[SOUND_TRIGGER_MAX_USERS];

};

struct sound_trigger_phrase_recognition_event {

    struct sound_trigger_phrase_recognition_extra phrase_extras[SOUND_TRIGGER_MAX_PHRASES];

};

/*

 * configuration for sound trigger capture session passed to start_recognition()

 */

struct sound_trigger_recognition_config {

    audio_io_handle_t    capture_handle;    /* IO handle that will be used for capture.

                                            N/A if capture_requested is false */

    audio_devices_t      capture_device;    /* input device requested for detection capture */

    bool                 capture_requested; /* capture and buffer audio for this recognition

                                            instance */

    unsigned int         num_phrases;   /* number of key phrases recognition extras */

    struct sound_trigger_phrase_recognition_extra phrases[SOUND_TRIGGER_MAX_PHRASES];

                                           /* configuration for each key phrase */

    unsigned int        data_size;         /* size of opaque capture configuration data */

    unsigned int        data_offset;       /* offset of opaque data start from start of this struct

                                           (e.g sizeof struct sound_trigger_recognition_config) */

};

/*

 * Event sent via load sound model callback

 */

struct sound_trigger_model_event {

    int             status;         /* sound model status e.g. SOUND_MODEL_STATUS_UPDATED */

    unsigned int    data_size;      /* size of event data if any. Size of updated sound model if

                                       status is SOUND_MODEL_STATUS_UPDATED */

    unsigned int    data_offset;    /* offset of data start from start of this struct

                                       (e.g sizeof struct sound_trigger_model_event) */

};

#endif  // ANDROID_SOUND_TRIGGER_H