/* automatically generated by rust-bindgen */

pub const _STDINT_H: ::std::os::raw::c_uint = 1;
pub const _FEATURES_H: ::std::os::raw::c_uint = 1;
pub const _DEFAULT_SOURCE: ::std::os::raw::c_uint = 1;
pub const __USE_ISOC11: ::std::os::raw::c_uint = 1;
pub const __USE_ISOC99: ::std::os::raw::c_uint = 1;
pub const __USE_ISOC95: ::std::os::raw::c_uint = 1;
pub const __USE_POSIX_IMPLICITLY: ::std::os::raw::c_uint = 1;
pub const _POSIX_SOURCE: ::std::os::raw::c_uint = 1;
pub const _POSIX_C_SOURCE: ::std::os::raw::c_uint = 200809;
pub const __USE_POSIX: ::std::os::raw::c_uint = 1;
pub const __USE_POSIX2: ::std::os::raw::c_uint = 1;
pub const __USE_POSIX199309: ::std::os::raw::c_uint = 1;
pub const __USE_POSIX199506: ::std::os::raw::c_uint = 1;
pub const __USE_XOPEN2K: ::std::os::raw::c_uint = 1;
pub const __USE_XOPEN2K8: ::std::os::raw::c_uint = 1;
pub const _ATFILE_SOURCE: ::std::os::raw::c_uint = 1;
pub const __USE_MISC: ::std::os::raw::c_uint = 1;
pub const __USE_ATFILE: ::std::os::raw::c_uint = 1;
pub const __USE_FORTIFY_LEVEL: ::std::os::raw::c_uint = 0;
pub const _STDC_PREDEF_H: ::std::os::raw::c_uint = 1;
pub const __STDC_IEC_559__: ::std::os::raw::c_uint = 1;
pub const __STDC_IEC_559_COMPLEX__: ::std::os::raw::c_uint = 1;
pub const __STDC_ISO_10646__: ::std::os::raw::c_uint = 201605;
pub const __STDC_NO_THREADS__: ::std::os::raw::c_uint = 1;
pub const __GNU_LIBRARY__: ::std::os::raw::c_uint = 6;
pub const __GLIBC__: ::std::os::raw::c_uint = 2;
pub const __GLIBC_MINOR__: ::std::os::raw::c_uint = 24;
pub const _SYS_CDEFS_H: ::std::os::raw::c_uint = 1;
pub const __WORDSIZE: ::std::os::raw::c_uint = 64;
pub const __WORDSIZE_TIME64_COMPAT32: ::std::os::raw::c_uint = 1;
pub const __SYSCALL_WORDSIZE: ::std::os::raw::c_uint = 64;
pub const _BITS_WCHAR_H: ::std::os::raw::c_uint = 1;
pub const INT8_MIN: ::std::os::raw::c_int = -128;
pub const INT16_MIN: ::std::os::raw::c_int = -32768;
pub const INT32_MIN: ::std::os::raw::c_int = -2147483648;
pub const INT8_MAX: ::std::os::raw::c_uint = 127;
pub const INT16_MAX: ::std::os::raw::c_uint = 32767;
pub const INT32_MAX: ::std::os::raw::c_uint = 2147483647;
pub const UINT8_MAX: ::std::os::raw::c_uint = 255;
pub const UINT16_MAX: ::std::os::raw::c_uint = 65535;
pub const UINT32_MAX: ::std::os::raw::c_uint = 4294967295;
pub const INT_LEAST8_MIN: ::std::os::raw::c_int = -128;
pub const INT_LEAST16_MIN: ::std::os::raw::c_int = -32768;
pub const INT_LEAST32_MIN: ::std::os::raw::c_int = -2147483648;
pub const INT_LEAST8_MAX: ::std::os::raw::c_uint = 127;
pub const INT_LEAST16_MAX: ::std::os::raw::c_uint = 32767;
pub const INT_LEAST32_MAX: ::std::os::raw::c_uint = 2147483647;
pub const UINT_LEAST8_MAX: ::std::os::raw::c_uint = 255;
pub const UINT_LEAST16_MAX: ::std::os::raw::c_uint = 65535;
pub const UINT_LEAST32_MAX: ::std::os::raw::c_uint = 4294967295;
pub const INT_FAST8_MIN: ::std::os::raw::c_int = -128;
pub const INT_FAST16_MIN: ::std::os::raw::c_longlong = -9223372036854775808;
pub const INT_FAST32_MIN: ::std::os::raw::c_longlong = -9223372036854775808;
pub const INT_FAST8_MAX: ::std::os::raw::c_uint = 127;
pub const INT_FAST16_MAX: ::std::os::raw::c_ulonglong = 9223372036854775807;
pub const INT_FAST32_MAX: ::std::os::raw::c_ulonglong = 9223372036854775807;
pub const UINT_FAST8_MAX: ::std::os::raw::c_uint = 255;
pub const UINT_FAST16_MAX: ::std::os::raw::c_int = -1;
pub const UINT_FAST32_MAX: ::std::os::raw::c_int = -1;
pub const INTPTR_MIN: ::std::os::raw::c_longlong = -9223372036854775808;
pub const INTPTR_MAX: ::std::os::raw::c_ulonglong = 9223372036854775807;
pub const UINTPTR_MAX: ::std::os::raw::c_int = -1;
pub const PTRDIFF_MIN: ::std::os::raw::c_longlong = -9223372036854775808;
pub const PTRDIFF_MAX: ::std::os::raw::c_ulonglong = 9223372036854775807;
pub const SIG_ATOMIC_MIN: ::std::os::raw::c_int = -2147483648;
pub const SIG_ATOMIC_MAX: ::std::os::raw::c_uint = 2147483647;
pub const SIZE_MAX: ::std::os::raw::c_int = -1;
pub const WINT_MIN: ::std::os::raw::c_uint = 0;
pub const WINT_MAX: ::std::os::raw::c_uint = 4294967295;
pub type wchar_t = ::std::os::raw::c_int;
#[repr(C)]
#[derive(Debug, Copy)]
pub struct max_align_t {
    pub __clang_max_align_nonce1: ::std::os::raw::c_longlong,
    pub __bindgen_padding_0: u64,
    pub __clang_max_align_nonce2: f64,
}
#[test]
fn bindgen_test_layout_max_align_t() {
    assert_eq!(::std::mem::size_of::<max_align_t>() , 32usize , concat ! (
               "Size of: " , stringify ! ( max_align_t ) ));
    assert_eq! (unsafe {
                & ( * ( 0 as * const max_align_t ) ) .
                __clang_max_align_nonce1 as * const _ as usize } , 0usize ,
                concat ! (
                "Alignment of field: " , stringify ! ( max_align_t ) , "::" ,
                stringify ! ( __clang_max_align_nonce1 ) ));
    assert_eq! (unsafe {
                & ( * ( 0 as * const max_align_t ) ) .
                __clang_max_align_nonce2 as * const _ as usize } , 16usize ,
                concat ! (
                "Alignment of field: " , stringify ! ( max_align_t ) , "::" ,
                stringify ! ( __clang_max_align_nonce2 ) ));
}
impl Clone for max_align_t {
    fn clone(&self) -> Self { *self }
}
pub type int_least8_t = ::std::os::raw::c_schar;
pub type int_least16_t = ::std::os::raw::c_short;
pub type int_least32_t = ::std::os::raw::c_int;
pub type int_least64_t = ::std::os::raw::c_long;
pub type uint_least8_t = ::std::os::raw::c_uchar;
pub type uint_least16_t = ::std::os::raw::c_ushort;
pub type uint_least32_t = ::std::os::raw::c_uint;
pub type uint_least64_t = ::std::os::raw::c_ulong;
pub type int_fast8_t = ::std::os::raw::c_schar;
pub type int_fast16_t = ::std::os::raw::c_long;
pub type int_fast32_t = ::std::os::raw::c_long;
pub type int_fast64_t = ::std::os::raw::c_long;
pub type uint_fast8_t = ::std::os::raw::c_uchar;
pub type uint_fast16_t = ::std::os::raw::c_ulong;
pub type uint_fast32_t = ::std::os::raw::c_ulong;
pub type uint_fast64_t = ::std::os::raw::c_ulong;
pub type intmax_t = ::std::os::raw::c_long;
pub type uintmax_t = ::std::os::raw::c_ulong;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct OlmInboundGroupSession {
    _unused: [u8; 0],
}
extern "C" {
    pub fn olm_inbound_group_session_size() -> usize;
}
extern "C" {
    pub fn olm_inbound_group_session(memory: *mut ::std::os::raw::c_void)
     -> *mut OlmInboundGroupSession;
}
extern "C" {
    pub fn olm_inbound_group_session_last_error(session:
                                                    *const OlmInboundGroupSession)
     -> *const ::std::os::raw::c_char;
}
extern "C" {
    pub fn olm_clear_inbound_group_session(session:
                                               *mut OlmInboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_pickle_inbound_group_session_length(session:
                                                       *const OlmInboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_pickle_inbound_group_session(session:
                                                *mut OlmInboundGroupSession,
                                            key:
                                                *const ::std::os::raw::c_void,
                                            key_length: usize,
                                            pickled:
                                                *mut ::std::os::raw::c_void,
                                            pickled_length: usize) -> usize;
}
extern "C" {
    pub fn olm_unpickle_inbound_group_session(session:
                                                  *mut OlmInboundGroupSession,
                                              key:
                                                  *const ::std::os::raw::c_void,
                                              key_length: usize,
                                              pickled:
                                                  *mut ::std::os::raw::c_void,
                                              pickled_length: usize) -> usize;
}
extern "C" {
    pub fn olm_init_inbound_group_session(session:
                                              *mut OlmInboundGroupSession,
                                          session_key: *const u8,
                                          session_key_length: usize) -> usize;
}
extern "C" {
    pub fn olm_import_inbound_group_session(session:
                                                *mut OlmInboundGroupSession,
                                            session_key: *const u8,
                                            session_key_length: usize)
     -> usize;
}
extern "C" {
    pub fn olm_group_decrypt_max_plaintext_length(session:
                                                      *mut OlmInboundGroupSession,
                                                  message: *mut u8,
                                                  message_length: usize)
     -> usize;
}
extern "C" {
    pub fn olm_group_decrypt(session: *mut OlmInboundGroupSession,
                             message: *mut u8, message_length: usize,
                             plaintext: *mut u8, max_plaintext_length: usize,
                             message_index: *mut u32) -> usize;
}
extern "C" {
    pub fn olm_inbound_group_session_id_length(session:
                                                   *const OlmInboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_inbound_group_session_id(session: *mut OlmInboundGroupSession,
                                        id: *mut u8, id_length: usize)
     -> usize;
}
extern "C" {
    pub fn olm_inbound_group_session_first_known_index(session:
                                                           *const OlmInboundGroupSession)
     -> u32;
}
extern "C" {
    pub fn olm_inbound_group_session_is_verified(session:
                                                     *const OlmInboundGroupSession)
     -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn olm_export_inbound_group_session_length(session:
                                                       *const OlmInboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_export_inbound_group_session(session:
                                                *mut OlmInboundGroupSession,
                                            key: *mut u8, key_length: usize,
                                            message_index: u32) -> usize;
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct OlmOutboundGroupSession {
    _unused: [u8; 0],
}
extern "C" {
    pub fn olm_outbound_group_session_size() -> usize;
}
extern "C" {
    pub fn olm_outbound_group_session(memory: *mut ::std::os::raw::c_void)
     -> *mut OlmOutboundGroupSession;
}
extern "C" {
    pub fn olm_outbound_group_session_last_error(session:
                                                     *const OlmOutboundGroupSession)
     -> *const ::std::os::raw::c_char;
}
extern "C" {
    pub fn olm_clear_outbound_group_session(session:
                                                *mut OlmOutboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_pickle_outbound_group_session_length(session:
                                                        *const OlmOutboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_pickle_outbound_group_session(session:
                                                 *mut OlmOutboundGroupSession,
                                             key:
                                                 *const ::std::os::raw::c_void,
                                             key_length: usize,
                                             pickled:
                                                 *mut ::std::os::raw::c_void,
                                             pickled_length: usize) -> usize;
}
extern "C" {
    pub fn olm_unpickle_outbound_group_session(session:
                                                   *mut OlmOutboundGroupSession,
                                               key:
                                                   *const ::std::os::raw::c_void,
                                               key_length: usize,
                                               pickled:
                                                   *mut ::std::os::raw::c_void,
                                               pickled_length: usize)
     -> usize;
}
extern "C" {
    pub fn olm_init_outbound_group_session_random_length(session:
                                                             *const OlmOutboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_init_outbound_group_session(session:
                                               *mut OlmOutboundGroupSession,
                                           random: *mut u8,
                                           random_length: usize) -> usize;
}
extern "C" {
    pub fn olm_group_encrypt_message_length(session:
                                                *mut OlmOutboundGroupSession,
                                            plaintext_length: usize) -> usize;
}
extern "C" {
    pub fn olm_group_encrypt(session: *mut OlmOutboundGroupSession,
                             plaintext: *const u8, plaintext_length: usize,
                             message: *mut u8, message_length: usize)
     -> usize;
}
extern "C" {
    pub fn olm_outbound_group_session_id_length(session:
                                                    *const OlmOutboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_outbound_group_session_id(session:
                                             *mut OlmOutboundGroupSession,
                                         id: *mut u8, id_length: usize)
     -> usize;
}
extern "C" {
    pub fn olm_outbound_group_session_message_index(session:
                                                        *mut OlmOutboundGroupSession)
     -> u32;
}
extern "C" {
    pub fn olm_outbound_group_session_key_length(session:
                                                     *const OlmOutboundGroupSession)
     -> usize;
}
extern "C" {
    pub fn olm_outbound_group_session_key(session:
                                              *mut OlmOutboundGroupSession,
                                          key: *mut u8, key_length: usize)
     -> usize;
}
pub const OLM_MESSAGE_TYPE_PRE_KEY: usize = 0;
pub const OLM_MESSAGE_TYPE_MESSAGE: usize = 1;
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct OlmAccount {
    _unused: [u8; 0],
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct OlmSession {
    _unused: [u8; 0],
}
#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct OlmUtility {
    _unused: [u8; 0],
}
extern "C" {
    pub fn olm_get_library_version(major: *mut u8, minor: *mut u8,
                                   patch: *mut u8);
}
extern "C" {
    pub fn olm_account_size() -> usize;
}
extern "C" {
    pub fn olm_session_size() -> usize;
}
extern "C" {
    pub fn olm_utility_size() -> usize;
}
extern "C" {
    pub fn olm_account(memory: *mut ::std::os::raw::c_void)
     -> *mut OlmAccount;
}
extern "C" {
    pub fn olm_session(memory: *mut ::std::os::raw::c_void)
     -> *mut OlmSession;
}
extern "C" {
    pub fn olm_utility(memory: *mut ::std::os::raw::c_void)
     -> *mut OlmUtility;
}
extern "C" {
    pub fn olm_error() -> usize;
}
extern "C" {
    pub fn olm_account_last_error(account: *mut OlmAccount)
     -> *const ::std::os::raw::c_char;
}
extern "C" {
    pub fn olm_session_last_error(session: *mut OlmSession)
     -> *const ::std::os::raw::c_char;
}
extern "C" {
    pub fn olm_utility_last_error(utility: *mut OlmUtility)
     -> *const ::std::os::raw::c_char;
}
extern "C" {
    pub fn olm_clear_account(account: *mut OlmAccount) -> usize;
}
extern "C" {
    pub fn olm_clear_session(session: *mut OlmSession) -> usize;
}
extern "C" {
    pub fn olm_clear_utility(utility: *mut OlmUtility) -> usize;
}
extern "C" {
    pub fn olm_pickle_account_length(account: *mut OlmAccount) -> usize;
}
extern "C" {
    pub fn olm_pickle_session_length(session: *mut OlmSession) -> usize;
}
extern "C" {
    pub fn olm_pickle_account(account: *mut OlmAccount,
                              key: *const ::std::os::raw::c_void,
                              key_length: usize,
                              pickled: *mut ::std::os::raw::c_void,
                              pickled_length: usize) -> usize;
}
extern "C" {
    pub fn olm_pickle_session(session: *mut OlmSession,
                              key: *const ::std::os::raw::c_void,
                              key_length: usize,
                              pickled: *mut ::std::os::raw::c_void,
                              pickled_length: usize) -> usize;
}
extern "C" {
    pub fn olm_unpickle_account(account: *mut OlmAccount,
                                key: *const ::std::os::raw::c_void,
                                key_length: usize,
                                pickled: *mut ::std::os::raw::c_void,
                                pickled_length: usize) -> usize;
}
extern "C" {
    pub fn olm_unpickle_session(session: *mut OlmSession,
                                key: *const ::std::os::raw::c_void,
                                key_length: usize,
                                pickled: *mut ::std::os::raw::c_void,
                                pickled_length: usize) -> usize;
}
extern "C" {
    pub fn olm_create_account_random_length(account: *mut OlmAccount)
     -> usize;
}
extern "C" {
    pub fn olm_create_account(account: *mut OlmAccount,
                              random: *mut ::std::os::raw::c_void,
                              random_length: usize) -> usize;
}
extern "C" {
    pub fn olm_account_identity_keys_length(account: *mut OlmAccount)
     -> usize;
}
extern "C" {
    pub fn olm_account_identity_keys(account: *mut OlmAccount,
                                     identity_keys:
                                         *mut ::std::os::raw::c_void,
                                     identity_key_length: usize) -> usize;
}
extern "C" {
    pub fn olm_account_signature_length(account: *mut OlmAccount) -> usize;
}
extern "C" {
    pub fn olm_account_sign(account: *mut OlmAccount,
                            message: *const ::std::os::raw::c_void,
                            message_length: usize,
                            signature: *mut ::std::os::raw::c_void,
                            signature_length: usize) -> usize;
}
extern "C" {
    pub fn olm_account_one_time_keys_length(account: *mut OlmAccount)
     -> usize;
}
extern "C" {
    pub fn olm_account_one_time_keys(account: *mut OlmAccount,
                                     one_time_keys:
                                         *mut ::std::os::raw::c_void,
                                     one_time_keys_length: usize) -> usize;
}
extern "C" {
    pub fn olm_account_mark_keys_as_published(account: *mut OlmAccount)
     -> usize;
}
extern "C" {
    pub fn olm_account_max_number_of_one_time_keys(account: *mut OlmAccount)
     -> usize;
}
extern "C" {
    pub fn olm_account_generate_one_time_keys_random_length(account:
                                                                *mut OlmAccount,
                                                            number_of_keys:
                                                                usize)
     -> usize;
}
extern "C" {
    pub fn olm_account_generate_one_time_keys(account: *mut OlmAccount,
                                              number_of_keys: usize,
                                              random:
                                                  *mut ::std::os::raw::c_void,
                                              random_length: usize) -> usize;
}
extern "C" {
    pub fn olm_create_outbound_session_random_length(session: *mut OlmSession)
     -> usize;
}
extern "C" {
    pub fn olm_create_outbound_session(session: *mut OlmSession,
                                       account: *mut OlmAccount,
                                       their_identity_key:
                                           *const ::std::os::raw::c_void,
                                       their_identity_key_length: usize,
                                       their_one_time_key:
                                           *const ::std::os::raw::c_void,
                                       their_one_time_key_length: usize,
                                       random: *mut ::std::os::raw::c_void,
                                       random_length: usize) -> usize;
}
extern "C" {
    pub fn olm_create_inbound_session(session: *mut OlmSession,
                                      account: *mut OlmAccount,
                                      one_time_key_message:
                                          *mut ::std::os::raw::c_void,
                                      message_length: usize) -> usize;
}
extern "C" {
    pub fn olm_create_inbound_session_from(session: *mut OlmSession,
                                           account: *mut OlmAccount,
                                           their_identity_key:
                                               *const ::std::os::raw::c_void,
                                           their_identity_key_length: usize,
                                           one_time_key_message:
                                               *mut ::std::os::raw::c_void,
                                           message_length: usize) -> usize;
}
extern "C" {
    pub fn olm_session_id_length(session: *mut OlmSession) -> usize;
}
extern "C" {
    pub fn olm_session_id(session: *mut OlmSession,
                          id: *mut ::std::os::raw::c_void, id_length: usize)
     -> usize;
}
extern "C" {
    pub fn olm_session_has_received_message(session: *mut OlmSession)
     -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn olm_matches_inbound_session(session: *mut OlmSession,
                                       one_time_key_message:
                                           *mut ::std::os::raw::c_void,
                                       message_length: usize) -> usize;
}
extern "C" {
    pub fn olm_matches_inbound_session_from(session: *mut OlmSession,
                                            their_identity_key:
                                                *const ::std::os::raw::c_void,
                                            their_identity_key_length: usize,
                                            one_time_key_message:
                                                *mut ::std::os::raw::c_void,
                                            message_length: usize) -> usize;
}
extern "C" {
    pub fn olm_remove_one_time_keys(account: *mut OlmAccount,
                                    session: *mut OlmSession) -> usize;
}
extern "C" {
    pub fn olm_encrypt_message_type(session: *mut OlmSession) -> usize;
}
extern "C" {
    pub fn olm_encrypt_random_length(session: *mut OlmSession) -> usize;
}
extern "C" {
    pub fn olm_encrypt_message_length(session: *mut OlmSession,
                                      plaintext_length: usize) -> usize;
}
extern "C" {
    pub fn olm_encrypt(session: *mut OlmSession,
                       plaintext: *const ::std::os::raw::c_void,
                       plaintext_length: usize,
                       random: *mut ::std::os::raw::c_void,
                       random_length: usize,
                       message: *mut ::std::os::raw::c_void,
                       message_length: usize) -> usize;
}
extern "C" {
    pub fn olm_decrypt_max_plaintext_length(session: *mut OlmSession,
                                            message_type: usize,
                                            message:
                                                *mut ::std::os::raw::c_void,
                                            message_length: usize) -> usize;
}
extern "C" {
    pub fn olm_decrypt(session: *mut OlmSession, message_type: usize,
                       message: *mut ::std::os::raw::c_void,
                       message_length: usize,
                       plaintext: *mut ::std::os::raw::c_void,
                       max_plaintext_length: usize) -> usize;
}
extern "C" {
    pub fn olm_sha256_length(utility: *mut OlmUtility) -> usize;
}
extern "C" {
    pub fn olm_sha256(utility: *mut OlmUtility,
                      input: *const ::std::os::raw::c_void,
                      input_length: usize,
                      output: *mut ::std::os::raw::c_void,
                      output_length: usize) -> usize;
}
extern "C" {
    pub fn olm_ed25519_verify(utility: *mut OlmUtility,
                              key: *const ::std::os::raw::c_void,
                              key_length: usize,
                              message: *const ::std::os::raw::c_void,
                              message_length: usize,
                              signature: *mut ::std::os::raw::c_void,
                              signature_length: usize) -> usize;
}