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FFI Interface methods and tests 

Added FFI interface methods to the library
Added a set of tests for the FFI. currently only the python one is working as intended. the c one isn't complete yet.
Need to add example tests for java, ruby, go?...
Woot! FFI!!!
develop
Drew Short 9 years ago
parent
23f0eec0f4
commit
58579b2dcd
9 changed files with 805 additions and 31 deletions
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  1. 4
      .gitignore
  2. 1
      Cargo.toml
  3. 638
      FFI-tests/_ffi_test_py.c
  4. 28
      FFI-tests/ffi_test.c
  5. 34
      FFI-tests/ffi_test.py
  6. 26
      FFI-tests/ffi_test_build.py
  7. 3
      FFI-tests/run_ffi_test_python.sh
  8. 1
      FFI-tests/test_images
  9. 83
      src/lib.rs

4
.gitignore
View File

@ -25,3 +25,7 @@ Cargo.lock
#Rustfmt backup files #Rustfmt backup files
*.rs.bk *.rs.bk
# FFI test binaries
FFI-tests/*.so
FFI-tests/*.o

1
Cargo.toml
View File

@ -19,3 +19,4 @@ image = "0.6.0"
complex = "0.8.0" complex = "0.8.0"
dft = "0.4.1" dft = "0.4.1"
sha1 = "0.1.1" sha1 = "0.1.1"
libc = "0.2.4"

638
FFI-tests/_ffi_test_py.c
View File

@ -0,0 +1,638 @@
#define _CFFI_
#include <Python.h>
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
/* This part is from file 'cffi/parse_c_type.h'. It is copied at the
beginning of C sources generated by CFFI's ffi.set_source(). */
typedef void *_cffi_opcode_t;
#define _CFFI_OP(opcode, arg) (_cffi_opcode_t)(opcode | (((uintptr_t)(arg)) << 8))
#define _CFFI_GETOP(cffi_opcode) ((unsigned char)(uintptr_t)cffi_opcode)
#define _CFFI_GETARG(cffi_opcode) (((intptr_t)cffi_opcode) >> 8)
#define _CFFI_OP_PRIMITIVE 1
#define _CFFI_OP_POINTER 3
#define _CFFI_OP_ARRAY 5
#define _CFFI_OP_OPEN_ARRAY 7
#define _CFFI_OP_STRUCT_UNION 9
#define _CFFI_OP_ENUM 11
#define _CFFI_OP_FUNCTION 13
#define _CFFI_OP_FUNCTION_END 15
#define _CFFI_OP_NOOP 17
#define _CFFI_OP_BITFIELD 19
#define _CFFI_OP_TYPENAME 21
#define _CFFI_OP_CPYTHON_BLTN_V 23 // varargs
#define _CFFI_OP_CPYTHON_BLTN_N 25 // noargs
#define _CFFI_OP_CPYTHON_BLTN_O 27 // O (i.e. a single arg)
#define _CFFI_OP_CONSTANT 29
#define _CFFI_OP_CONSTANT_INT 31
#define _CFFI_OP_GLOBAL_VAR 33
#define _CFFI_OP_DLOPEN_FUNC 35
#define _CFFI_OP_DLOPEN_CONST 37
#define _CFFI_OP_GLOBAL_VAR_F 39
#define _CFFI_OP_EXTERN_PYTHON 41
#define _CFFI_PRIM_VOID 0
#define _CFFI_PRIM_BOOL 1
#define _CFFI_PRIM_CHAR 2
#define _CFFI_PRIM_SCHAR 3
#define _CFFI_PRIM_UCHAR 4
#define _CFFI_PRIM_SHORT 5
#define _CFFI_PRIM_USHORT 6
#define _CFFI_PRIM_INT 7
#define _CFFI_PRIM_UINT 8
#define _CFFI_PRIM_LONG 9
#define _CFFI_PRIM_ULONG 10
#define _CFFI_PRIM_LONGLONG 11
#define _CFFI_PRIM_ULONGLONG 12
#define _CFFI_PRIM_FLOAT 13
#define _CFFI_PRIM_DOUBLE 14
#define _CFFI_PRIM_LONGDOUBLE 15
#define _CFFI_PRIM_WCHAR 16
#define _CFFI_PRIM_INT8 17
#define _CFFI_PRIM_UINT8 18
#define _CFFI_PRIM_INT16 19
#define _CFFI_PRIM_UINT16 20
#define _CFFI_PRIM_INT32 21
#define _CFFI_PRIM_UINT32 22
#define _CFFI_PRIM_INT64 23
#define _CFFI_PRIM_UINT64 24
#define _CFFI_PRIM_INTPTR 25
#define _CFFI_PRIM_UINTPTR 26
#define _CFFI_PRIM_PTRDIFF 27
#define _CFFI_PRIM_SIZE 28
#define _CFFI_PRIM_SSIZE 29
#define _CFFI_PRIM_INT_LEAST8 30
#define _CFFI_PRIM_UINT_LEAST8 31
#define _CFFI_PRIM_INT_LEAST16 32
#define _CFFI_PRIM_UINT_LEAST16 33
#define _CFFI_PRIM_INT_LEAST32 34
#define _CFFI_PRIM_UINT_LEAST32 35
#define _CFFI_PRIM_INT_LEAST64 36
#define _CFFI_PRIM_UINT_LEAST64 37
#define _CFFI_PRIM_INT_FAST8 38
#define _CFFI_PRIM_UINT_FAST8 39
#define _CFFI_PRIM_INT_FAST16 40
#define _CFFI_PRIM_UINT_FAST16 41
#define _CFFI_PRIM_INT_FAST32 42
#define _CFFI_PRIM_UINT_FAST32 43
#define _CFFI_PRIM_INT_FAST64 44
#define _CFFI_PRIM_UINT_FAST64 45
#define _CFFI_PRIM_INTMAX 46
#define _CFFI_PRIM_UINTMAX 47
#define _CFFI__NUM_PRIM 48
#define _CFFI__UNKNOWN_PRIM (-1)
#define _CFFI__UNKNOWN_FLOAT_PRIM (-2)
#define _CFFI__UNKNOWN_LONG_DOUBLE (-3)
#define _CFFI__IO_FILE_STRUCT (-1)
struct _cffi_global_s {
const char *name;
void *address;
_cffi_opcode_t type_op;
void *size_or_direct_fn; // OP_GLOBAL_VAR: size, or 0 if unknown
// OP_CPYTHON_BLTN_*: addr of direct function
};
struct _cffi_getconst_s {
unsigned long long value;
const struct _cffi_type_context_s *ctx;
int gindex;
};
struct _cffi_struct_union_s {
const char *name;
int type_index; // -> _cffi_types, on a OP_STRUCT_UNION
int flags; // _CFFI_F_* flags below
size_t size;
int alignment;
int first_field_index; // -> _cffi_fields array
int num_fields;
};
#define _CFFI_F_UNION 0x01 // is a union, not a struct
#define _CFFI_F_CHECK_FIELDS 0x02 // complain if fields are not in the
// "standard layout" or if some are missing
#define _CFFI_F_PACKED 0x04 // for CHECK_FIELDS, assume a packed struct
#define _CFFI_F_EXTERNAL 0x08 // in some other ffi.include()
#define _CFFI_F_OPAQUE 0x10 // opaque
struct _cffi_field_s {
const char *name;
size_t field_offset;
size_t field_size;
_cffi_opcode_t field_type_op;
};
struct _cffi_enum_s {
const char *name;
int type_index; // -> _cffi_types, on a OP_ENUM
int type_prim; // _CFFI_PRIM_xxx
const char *enumerators; // comma-delimited string
};
struct _cffi_typename_s {
const char *name;
int type_index; /* if opaque, points to a possibly artificial
OP_STRUCT which is itself opaque */
};
struct _cffi_type_context_s {
_cffi_opcode_t *types;
const struct _cffi_global_s *globals;
const struct _cffi_field_s *fields;
const struct _cffi_struct_union_s *struct_unions;
const struct _cffi_enum_s *enums;
const struct _cffi_typename_s *typenames;
int num_globals;
int num_struct_unions;
int num_enums;
int num_typenames;
const char *const *includes;
int num_types;
int flags; /* future extension */
};
struct _cffi_parse_info_s {
const struct _cffi_type_context_s *ctx;
_cffi_opcode_t *output;
unsigned int output_size;
size_t error_location;
const char *error_message;
};
struct _cffi_externpy_s {
const char *name;
size_t size_of_result;
void *reserved1, *reserved2;
};
#ifdef _CFFI_INTERNAL
static int parse_c_type(struct _cffi_parse_info_s *info, const char *input);
static int search_in_globals(const struct _cffi_type_context_s *ctx,
const char *search, size_t search_len);
static int search_in_struct_unions(const struct _cffi_type_context_s *ctx,
const char *search, size_t search_len);
#endif
/* this block of #ifs should be kept exactly identical between
c/_cffi_backend.c, cffi/vengine_cpy.py, cffi/vengine_gen.py
and cffi/_cffi_include.h */
#if defined(_MSC_VER)
# include <malloc.h> /* for alloca() */
# if _MSC_VER < 1600 /* MSVC < 2010 */
typedef __int8 int8_t;
typedef __int16 int16_t;
typedef __int32 int32_t;
typedef __int64 int64_t;
typedef unsigned __int8 uint8_t;
typedef unsigned __int16 uint16_t;
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
typedef __int8 int_least8_t;
typedef __int16 int_least16_t;
typedef __int32 int_least32_t;
typedef __int64 int_least64_t;
typedef unsigned __int8 uint_least8_t;
typedef unsigned __int16 uint_least16_t;
typedef unsigned __int32 uint_least32_t;
typedef unsigned __int64 uint_least64_t;
typedef __int8 int_fast8_t;
typedef __int16 int_fast16_t;
typedef __int32 int_fast32_t;
typedef __int64 int_fast64_t;
typedef unsigned __int8 uint_fast8_t;
typedef unsigned __int16 uint_fast16_t;
typedef unsigned __int32 uint_fast32_t;
typedef unsigned __int64 uint_fast64_t;
typedef __int64 intmax_t;
typedef unsigned __int64 uintmax_t;
# else
# include <stdint.h>
# endif
# if _MSC_VER < 1800 /* MSVC < 2013 */
typedef unsigned char _Bool;
# endif
#else
# include <stdint.h>
# if (defined (__SVR4) && defined (__sun)) || defined(_AIX) || defined(__hpux)
# include <alloca.h>
# endif
#endif
#ifdef __GNUC__
# define _CFFI_UNUSED_FN __attribute__((unused))
#else
# define _CFFI_UNUSED_FN /* nothing */
#endif
/********** CPython-specific section **********/
#ifndef PYPY_VERSION
#if PY_MAJOR_VERSION >= 3
# define PyInt_FromLong PyLong_FromLong
#endif
#define _cffi_from_c_double PyFloat_FromDouble
#define _cffi_from_c_float PyFloat_FromDouble
#define _cffi_from_c_long PyInt_FromLong
#define _cffi_from_c_ulong PyLong_FromUnsignedLong
#define _cffi_from_c_longlong PyLong_FromLongLong
#define _cffi_from_c_ulonglong PyLong_FromUnsignedLongLong
#define _cffi_to_c_double PyFloat_AsDouble
#define _cffi_to_c_float PyFloat_AsDouble
#define _cffi_from_c_int(x, type) \
(((type)-1) > 0 ? /* unsigned */ \
(sizeof(type) < sizeof(long) ? \
PyInt_FromLong((long)x) : \
sizeof(type) == sizeof(long) ? \
PyLong_FromUnsignedLong((unsigned long)x) : \
PyLong_FromUnsignedLongLong((unsigned long long)x)) : \
(sizeof(type) <= sizeof(long) ? \
PyInt_FromLong((long)x) : \
PyLong_FromLongLong((long long)x)))
#define _cffi_to_c_int(o, type) \
((type)( \
sizeof(type) == 1 ? (((type)-1) > 0 ? (type)_cffi_to_c_u8(o) \
: (type)_cffi_to_c_i8(o)) : \
sizeof(type) == 2 ? (((type)-1) > 0 ? (type)_cffi_to_c_u16(o) \
: (type)_cffi_to_c_i16(o)) : \
sizeof(type) == 4 ? (((type)-1) > 0 ? (type)_cffi_to_c_u32(o) \
: (type)_cffi_to_c_i32(o)) : \
sizeof(type) == 8 ? (((type)-1) > 0 ? (type)_cffi_to_c_u64(o) \
: (type)_cffi_to_c_i64(o)) : \
(Py_FatalError("unsupported size for type " #type), (type)0)))
#define _cffi_to_c_i8 \
((int(*)(PyObject *))_cffi_exports[1])
#define _cffi_to_c_u8 \
((int(*)(PyObject *))_cffi_exports[2])
#define _cffi_to_c_i16 \
((int(*)(PyObject *))_cffi_exports[3])
#define _cffi_to_c_u16 \
((int(*)(PyObject *))_cffi_exports[4])
#define _cffi_to_c_i32 \
((int(*)(PyObject *))_cffi_exports[5])
#define _cffi_to_c_u32 \
((unsigned int(*)(PyObject *))_cffi_exports[6])
#define _cffi_to_c_i64 \
((long long(*)(PyObject *))_cffi_exports[7])
#define _cffi_to_c_u64 \
((unsigned long long(*)(PyObject *))_cffi_exports[8])
#define _cffi_to_c_char \
((int(*)(PyObject *))_cffi_exports[9])
#define _cffi_from_c_pointer \
((PyObject *(*)(char *, CTypeDescrObject *))_cffi_exports[10])
#define _cffi_to_c_pointer \
((char *(*)(PyObject *, CTypeDescrObject *))_cffi_exports[11])
#define _cffi_get_struct_layout \
not used any more
#define _cffi_restore_errno \
((void(*)(void))_cffi_exports[13])
#define _cffi_save_errno \
((void(*)(void))_cffi_exports[14])
#define _cffi_from_c_char \
((PyObject *(*)(char))_cffi_exports[15])
#define _cffi_from_c_deref \
((PyObject *(*)(char *, CTypeDescrObject *))_cffi_exports[16])
#define _cffi_to_c \
((int(*)(char *, CTypeDescrObject *, PyObject *))_cffi_exports[17])
#define _cffi_from_c_struct \
((PyObject *(*)(char *, CTypeDescrObject *))_cffi_exports[18])
#define _cffi_to_c_wchar_t \
((wchar_t(*)(PyObject *))_cffi_exports[19])
#define _cffi_from_c_wchar_t \
((PyObject *(*)(wchar_t))_cffi_exports[20])
#define _cffi_to_c_long_double \
((long double(*)(PyObject *))_cffi_exports[21])
#define _cffi_to_c__Bool \
((_Bool(*)(PyObject *))_cffi_exports[22])
#define _cffi_prepare_pointer_call_argument \
((Py_ssize_t(*)(CTypeDescrObject *, PyObject *, char **))_cffi_exports[23])
#define _cffi_convert_array_from_object \
((int(*)(char *, CTypeDescrObject *, PyObject *))_cffi_exports[24])
#define _cffi_call_python \
((void(*)(struct _cffi_externpy_s *, char *))_cffi_exports[25])
#define _CFFI_NUM_EXPORTS 26
typedef struct _ctypedescr CTypeDescrObject;
static void *_cffi_exports[_CFFI_NUM_EXPORTS];
#define _cffi_type(index) ( \
assert((((uintptr_t)_cffi_types[index]) & 1) == 0), \
(CTypeDescrObject *)_cffi_types[index])
static PyObject *_cffi_init(const char *module_name, Py_ssize_t version,
const struct _cffi_type_context_s *ctx)
{
PyObject *module, *o_arg, *new_module;
void *raw[] = {
(void *)module_name,
(void *)version,
(void *)_cffi_exports,
(void *)ctx,
};
module = PyImport_ImportModule("_cffi_backend");
if (module == NULL)
goto failure;
o_arg = PyLong_FromVoidPtr((void *)raw);
if (o_arg == NULL)
goto failure;
new_module = PyObject_CallMethod(
module, (char *)"_init_cffi_1_0_external_module", (char *)"O", o_arg);
Py_DECREF(o_arg);
Py_DECREF(module);
return new_module;
failure:
Py_XDECREF(module);
return NULL;
}
_CFFI_UNUSED_FN
static PyObject **_cffi_unpack_args(PyObject *args_tuple, Py_ssize_t expected,
const char *fnname)
{
if (PyTuple_GET_SIZE(args_tuple) != expected) {
PyErr_Format(PyExc_TypeError,
"%.150s() takes exactly %zd arguments (%zd given)",
fnname, expected, PyTuple_GET_SIZE(args_tuple));
return NULL;
}
return &PyTuple_GET_ITEM(args_tuple, 0); /* pointer to the first item,
the others follow */
}
/********** end CPython-specific section **********/
#else
_CFFI_UNUSED_FN
static void (*_cffi_call_python)(struct _cffi_externpy_s *, char *);
#endif
#define _cffi_array_len(array) (sizeof(array) / sizeof((array)[0]))
#define _cffi_prim_int(size, sign) \
((size) == 1 ? ((sign) ? _CFFI_PRIM_INT8 : _CFFI_PRIM_UINT8) : \
(size) == 2 ? ((sign) ? _CFFI_PRIM_INT16 : _CFFI_PRIM_UINT16) : \
(size) == 4 ? ((sign) ? _CFFI_PRIM_INT32 : _CFFI_PRIM_UINT32) : \
(size) == 8 ? ((sign) ? _CFFI_PRIM_INT64 : _CFFI_PRIM_UINT64) : \
_CFFI__UNKNOWN_PRIM)
#define _cffi_prim_float(size) \
((size) == sizeof(float) ? _CFFI_PRIM_FLOAT : \
(size) == sizeof(double) ? _CFFI_PRIM_DOUBLE : \
(size) == sizeof(long double) ? _CFFI__UNKNOWN_LONG_DOUBLE : \
_CFFI__UNKNOWN_FLOAT_PRIM)
#define _cffi_check_int(got, got_nonpos, expected) \
((got_nonpos) == (expected <= 0) && \
(got) == (unsigned long long)expected)
#ifdef __cplusplus
}
#endif
/************************************************************/
#include <dlfcn.h>
/************************************************************/
static void *_cffi_types[] = {
/* 0 */ _CFFI_OP(_CFFI_OP_FUNCTION, 6), // uint64_t()(char const *)
/* 1 */ _CFFI_OP(_CFFI_OP_POINTER, 5), // char const *
/* 2 */ _CFFI_OP(_CFFI_OP_FUNCTION_END, 0),
/* 3 */ _CFFI_OP(_CFFI_OP_FUNCTION, 7), // void()(void)
/* 4 */ _CFFI_OP(_CFFI_OP_FUNCTION_END, 0),
/* 5 */ _CFFI_OP(_CFFI_OP_PRIMITIVE, 2), // char
/* 6 */ _CFFI_OP(_CFFI_OP_PRIMITIVE, 24), // uint64_t
/* 7 */ _CFFI_OP(_CFFI_OP_PRIMITIVE, 0), // void
};
static uint64_t _cffi_d_ext_get_ahash(char const * x0)
{
return ext_get_ahash(x0);
}
#ifndef PYPY_VERSION
static PyObject *
_cffi_f_ext_get_ahash(PyObject *self, PyObject *arg0)
{
char const * x0;
Py_ssize_t datasize;
uint64_t result;
datasize = _cffi_prepare_pointer_call_argument(
_cffi_type(1), arg0, (char **)&x0);
if (datasize != 0) {
if (datasize < 0)
return NULL;
x0 = (char const *)alloca((size_t)datasize);
memset((void *)x0, 0, (size_t)datasize);
if (_cffi_convert_array_from_object((char *)x0, _cffi_type(1), arg0) < 0)
return NULL;
}
Py_BEGIN_ALLOW_THREADS
_cffi_restore_errno();
{ result = ext_get_ahash(x0); }
_cffi_save_errno();
Py_END_ALLOW_THREADS
(void)self; /* unused */
return _cffi_from_c_int(result, uint64_t);
}
#else
# define _cffi_f_ext_get_ahash _cffi_d_ext_get_ahash
#endif
static uint64_t _cffi_d_ext_get_dhash(char const * x0)
{
return ext_get_dhash(x0);
}
#ifndef PYPY_VERSION
static PyObject *
_cffi_f_ext_get_dhash(PyObject *self, PyObject *arg0)
{
char const * x0;
Py_ssize_t datasize;
uint64_t result;
datasize = _cffi_prepare_pointer_call_argument(
_cffi_type(1), arg0, (char **)&x0);
if (datasize != 0) {
if (datasize < 0)
return NULL;
x0 = (char const *)alloca((size_t)datasize);
memset((void *)x0, 0, (size_t)datasize);
if (_cffi_convert_array_from_object((char *)x0, _cffi_type(1), arg0) < 0)
return NULL;
}
Py_BEGIN_ALLOW_THREADS
_cffi_restore_errno();
{ result = ext_get_dhash(x0); }
_cffi_save_errno();
Py_END_ALLOW_THREADS
(void)self; /* unused */
return _cffi_from_c_int(result, uint64_t);
}
#else
# define _cffi_f_ext_get_dhash _cffi_d_ext_get_dhash
#endif
static uint64_t _cffi_d_ext_get_phash(char const * x0)
{
return ext_get_phash(x0);
}
#ifndef PYPY_VERSION
static PyObject *
_cffi_f_ext_get_phash(PyObject *self, PyObject *arg0)
{
char const * x0;
Py_ssize_t datasize;
uint64_t result;
datasize = _cffi_prepare_pointer_call_argument(
_cffi_type(1), arg0, (char **)&x0);
if (datasize != 0) {
if (datasize < 0)
return NULL;
x0 = (char const *)alloca((size_t)datasize);
memset((void *)x0, 0, (size_t)datasize);
if (_cffi_convert_array_from_object((char *)x0, _cffi_type(1), arg0) < 0)
return NULL;
}
Py_BEGIN_ALLOW_THREADS
_cffi_restore_errno();
{ result = ext_get_phash(x0); }
_cffi_save_errno();
Py_END_ALLOW_THREADS
(void)self; /* unused */
return _cffi_from_c_int(result, uint64_t);
}
#else
# define _cffi_f_ext_get_phash _cffi_d_ext_get_phash
#endif
static void _cffi_d_init(void)
{
init();
}
#ifndef PYPY_VERSION
static PyObject *
_cffi_f_init(PyObject *self, PyObject *noarg)
{
Py_BEGIN_ALLOW_THREADS
_cffi_restore_errno();
{ init(); }
_cffi_save_errno();
Py_END_ALLOW_THREADS
(void)self; /* unused */
(void)noarg; /* unused */
Py_INCREF(Py_None);
return Py_None;
}
#else
# define _cffi_f_init _cffi_d_init
#endif
static void _cffi_d_teardown(void)
{
teardown();
}
#ifndef PYPY_VERSION
static PyObject *
_cffi_f_teardown(PyObject *self, PyObject *noarg)
{
Py_BEGIN_ALLOW_THREADS
_cffi_restore_errno();
{ teardown(); }
_cffi_save_errno();
Py_END_ALLOW_THREADS
(void)self; /* unused */
(void)noarg; /* unused */
Py_INCREF(Py_None);
return Py_None;
}
#else
# define _cffi_f_teardown _cffi_d_teardown
#endif
static const struct _cffi_global_s _cffi_globals[] = {
{ "ext_get_ahash", (void *)_cffi_f_ext_get_ahash, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_O, 0), (void *)_cffi_d_ext_get_ahash },
{ "ext_get_dhash", (void *)_cffi_f_ext_get_dhash, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_O, 0), (void *)_cffi_d_ext_get_dhash },
{ "ext_get_phash", (void *)_cffi_f_ext_get_phash, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_O, 0), (void *)_cffi_d_ext_get_phash },
{ "init", (void *)_cffi_f_init, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_N, 3), (void *)_cffi_d_init },
{ "teardown", (void *)_cffi_f_teardown, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_N, 3), (void *)_cffi_d_teardown },
};
static const struct _cffi_type_context_s _cffi_type_context = {
_cffi_types,
_cffi_globals,
NULL, /* no fields */
NULL, /* no struct_unions */
NULL, /* no enums */
NULL, /* no typenames */
5, /* num_globals */
0, /* num_struct_unions */
0, /* num_enums */
0, /* num_typenames */
NULL, /* no includes */
8, /* num_types */
0, /* flags */
};
#ifdef PYPY_VERSION
PyMODINIT_FUNC
_cffi_pypyinit__ffi_test_py(const void *p[])
{
p[0] = (const void *)0x2601;
p[1] = &_cffi_type_context;
}
# ifdef _MSC_VER
PyMODINIT_FUNC
# if PY_MAJOR_VERSION >= 3
PyInit__ffi_test_py(void) { return NULL; }
# else
init_ffi_test_py(void) { }
# endif
# endif
#elif PY_MAJOR_VERSION >= 3
PyMODINIT_FUNC
PyInit__ffi_test_py(void)
{
return _cffi_init("_ffi_test_py", 0x2601, &_cffi_type_context);
}
#else
PyMODINIT_FUNC
init_ffi_test_py(void)
{
_cffi_init("_ffi_test_py", 0x2601, &_cffi_type_context);
}
#endif

28
FFI-tests/ffi_test.c
View File

@ -0,0 +1,28 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <dlfcn.h>
int main() {
uint64_t (*ext_get_ahash)(const char *);
uint64_t (*ext_get_dhash)(const char *);
uint64_t (*ext_get_phash)(const char *);
imglib = dlopen("./libpihash.so", RTLD_LAZY);
if ( imglib != NULL ) {
}
printf("Large_Test_AHash: ", largeA);
printf("Large_Test_DHash: ", largeD);
printf("Large_Test_PHash: ", largeP);
printf("Medium_Test_AHash: ", mediumA);
printf("Medium_Test_DHash: ", mediumD);
printf("Medium_Test_PHash: ", mediumP);
printf("Small_Test_AHash: ", smallA);
printf("Small_Test_DHash: ", smallD);
printf("Small_Test_PHash: ", smallP);
}

34
FFI-tests/ffi_test.py
View File

@ -0,0 +1,34 @@
#!/usr/bin/env python3
from _ffi_test_py import ffi, lib
large_image_path = "test_images/sample_01_large.jpg".encode(encoding="utf-8")
medium_image_path = "test_images/sample_01_medium.jpg".encode(encoding="utf-8")
small_image_path = "test_images/sample_01_small.jpg".encode(encoding="utf-8")
print("starting test")
#initialize the library
lib.init()
# Print the path and the bytes as hex for debugging
#print(large_image_path)
#print('\\x'+'\\x'.join('{:02x}'.format(x) for x in large_image_path))
print("Get hashes for {}", large_image_path)
print("AHash: {}",lib.ext_get_ahash(large_image_path))
print("DHash: {}",lib.ext_get_dhash(large_image_path))
print("PHash: {}",lib.ext_get_phash(large_image_path))
print("Get hashes for {}", medium_image_path)
print("AHash: {}",lib.ext_get_ahash(medium_image_path))
print("DHash: {}",lib.ext_get_dhash(medium_image_path))
print("PHash: {}",lib.ext_get_phash(medium_image_path))
print("Get hashes for {}", small_image_path)
print("AHash: {}",lib.ext_get_ahash(small_image_path))
print("DHash: {}",lib.ext_get_dhash(small_image_path))
print("PHash: {}",lib.ext_get_phash(small_image_path))
# Do cleanup
#lib.teardown()

26
FFI-tests/ffi_test_build.py
View File

@ -0,0 +1,26 @@
#!/usr/bin/env python3
# A simple test script to confirm the C FFI for the rust library is working
from cffi import FFI
ffi = FFI()
ffi.set_source("_ffi_test_py",
"""
#include <dlfcn.h>
""",
libraries=["pihash"],
library_dirs=["."]
)
ffi.cdef("""
void init();
void teardown();
uint64_t ext_get_ahash(const char *);
uint64_t ext_get_dhash(const char *);
uint64_t ext_get_phash(const char *);
""")
if __name__ == "__main__":
ffi.compile()

3
FFI-tests/run_ffi_test_python.sh
View File

@ -0,0 +1,3 @@
#!/usr/bin/env sh
LD_LIBRARY_PATH="$PWD/:$LD_LIBRARY_PATH" python3 ./ffi_test.py

1
FFI-tests/test_images
View File

@ -0,0 +1 @@
../test_images

83
src/lib.rs
View File

@ -6,6 +6,8 @@
mod hash; mod hash;
mod cache; mod cache;
extern crate libc;
use std::path::Path; use std::path::Path;
use hash::PerceptualHash; use hash::PerceptualHash;
use std::ffi::CStr; use std::ffi::CStr;
@ -16,7 +18,7 @@ use std::ffi::CStr;
* Not performing this step may cause parts to fail. * Not performing this step may cause parts to fail.
*/ */
#[no_mangle] #[no_mangle]
pub extern fn init() {
pub extern "C" fn init() {
match cache::prep_cache() { match cache::prep_cache() {
Ok(_) => {} Ok(_) => {}
Err(e) => println!("Error: {}", e), Err(e) => println!("Error: {}", e),
@ -27,7 +29,7 @@ pub extern fn init() {
* Teardown for the library * Teardown for the library
*/ */
#[no_mangle] #[no_mangle]
pub extern fn teardown() {
pub extern "C" fn teardown() {
match cache::clear_cache() { match cache::clear_cache() {
Ok(_) => {} Ok(_) => {}
Err(e) => println!("Error: {}", e), Err(e) => println!("Error: {}", e),
@ -38,50 +40,87 @@ pub fn get_phashes(path: &Path) -> hash::PerceptualHashes {
hash::get_perceptual_hashes(path, &hash::Precision::Medium) hash::get_perceptual_hashes(path, &hash::Precision::Medium)
} }
pub fn get_ahash(path: &Path) -> u64 {
hash::AHash::new(&path, &hash::Precision::Medium).get_hash()
}
pub fn get_dhash(path: &Path) -> u64 {
hash::DHash::new(&path, &hash::Precision::Medium).get_hash()
}
pub fn get_phash(path: &Path) -> u64 {
hash::PHash::new(&path, &hash::Precision::Medium).get_hash()
}
pub fn get_hamming_distance(hash1: u64, hash2: u64) -> u64 {
hash::calculate_hamming_distance(hash1, hash2)
}
// External proxies for the get_*hash methods
#[no_mangle] #[no_mangle]
pub extern fn ext_get_ahash(path_str: &CStr) -> u64 {
pub extern "C" fn ext_get_ahash(path_char: *const libc::c_char) -> u64 {
unsafe {
let path_str = CStr::from_ptr(path_char);
let image_path = match path_str.to_str() { let image_path = match path_str.to_str() {
Ok(result) => result, Ok(result) => result,
Err(e) => "",
Err(e) => {
println!("Error: {}. Unable to parse '{}'",
e,
to_hex_string(path_str.to_bytes()));
panic!("Unable to parse path")
}
}; };
let path = Path::new(&image_path); let path = Path::new(&image_path);
get_ahash(&path) get_ahash(&path)
}
pub fn get_ahash(path: &Path) -> u64 {
hash::AHash::new(&path, &hash::Precision::Medium).get_hash()
}
} }
#[no_mangle] #[no_mangle]
pub extern fn ext_get_dhash(path_str: &CStr) -> u64 {
pub extern "C" fn ext_get_dhash(path_char: *const libc::c_char) -> u64 {
unsafe {
let path_str = CStr::from_ptr(path_char);
let image_path = match path_str.to_str() { let image_path = match path_str.to_str() {
Ok(result) => result, Ok(result) => result,
Err(e) => "",
Err(e) => {
println!("Error: {}. Unable to parse '{}'",
e,
to_hex_string(path_str.to_bytes()));
panic!("Unable to parse path")
}
}; };
let path = Path::new(&image_path); let path = Path::new(&image_path);
get_dhash(&path) get_dhash(&path)
}
pub fn get_dhash(path: &Path) -> u64 {
hash::DHash::new(&path, &hash::Precision::Medium).get_hash()
}
} }
#[no_mangle] #[no_mangle]
pub extern fn ext_get_phash(path_str: &CStr) -> u64 {
pub extern "C" fn ext_get_phash(path_char: *const libc::c_char) -> u64 {
unsafe {
let path_str = CStr::from_ptr(path_char);
let image_path = match path_str.to_str() { let image_path = match path_str.to_str() {
Ok(result) => result, Ok(result) => result,
Err(e) => "",
Err(e) => {
println!("Error: {}. Unable to parse '{}'",
e,
to_hex_string(path_str.to_bytes()));
panic!("Unable to parse path")
}
}; };
let path = Path::new(&image_path); let path = Path::new(&image_path);
get_phash(&path) get_phash(&path)
}
} }
pub fn get_phash(path: &Path) -> u64 {
hash::PHash::new(&path, &hash::Precision::Medium).get_hash()
}
pub fn get_hamming_distance(hash1: u64, hash2: u64) -> u64 {
hash::calculate_hamming_distance(hash1, hash2)
fn to_hex_string(bytes: &[u8]) -> String {
println!("length: {}", bytes.len());
let mut strs: Vec<String> = Vec::new();
for byte in bytes {
// println!("{:02x}", byte);
strs.push(format!("{:02x}", byte));
}
strs.join("\\x")
} }
// Module for the tests // Module for the tests

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