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Code Issues 1 Releases Wiki Activity

Added typed array C API

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This commit is contained in:
J.-F. Cap 2019-02-24 22:24:18 +01:00
parent 0eae75a5c2
commit 4147c0ce1f
2 changed files with 178 additions and 132 deletions
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266
src/core/typedarray.c
View File

@ -40,19 +40,6 @@ typedef int64_t ta_int64_t;
typedef float ta_float32_t;
typedef double ta_float64_t;
typedef enum TA_Type {
TA_TYPE_uint8,
TA_TYPE_int8,
TA_TYPE_uint16,
TA_TYPE_int16,
TA_TYPE_uint32,
TA_TYPE_int32,
TA_TYPE_uint64,
TA_TYPE_int64,
TA_TYPE_float32,
TA_TYPE_float64,
} TA_Type;
static char *ta_type_names[] = {
"uint8",
@ -65,6 +52,7 @@ static char *ta_type_names[] = {
"int64",
"float32",
"float64",
"any",
};
static size_t ta_type_sizes[] = {
@ -79,11 +67,11 @@ static size_t ta_type_sizes[] = {
sizeof(ta_float32_t),
sizeof(ta_float64_t),
};
#define TA_COUNT_TYPES (TA_TYPE_float64 + 1)
#define TA_COUNT_TYPES (JANET_TARRAY_TYPE_float64 + 1)
#define TA_ATOM_MAXSIZE 8
#define TA_FLAG_BIG_ENDIAN 1
static TA_Type get_ta_type_by_name(const uint8_t *name) {
static JanetTArrayType get_ta_type_by_name(const uint8_t *name) {
size_t nt = sizeof(ta_type_names) / sizeof(char *);
for (size_t i = 0; i < nt; i++) {
if (!janet_cstrcmp(name, ta_type_names[i]))
@ -95,13 +83,9 @@ static TA_Type get_ta_type_by_name(const uint8_t *name) {
typedef struct {
uint8_t *data;
size_t size;
uint32_t flags;
} TA_Buffer;
static TA_Buffer *ta_buffer_init(TA_Buffer *buf, size_t size) {
static JanetTArrayBuffer *ta_buffer_init(JanetTArrayBuffer *buf, size_t size) {
buf->data = (uint8_t *)calloc(size, sizeof(uint8_t));
buf->size = size;
#ifdef JANET_BIG_ENDIAN
@ -114,20 +98,20 @@ static TA_Buffer *ta_buffer_init(TA_Buffer *buf, size_t size) {
static int ta_buffer_gc(void *p, size_t s) {
(void) s;
TA_Buffer *buf = (TA_Buffer *)p;
JanetTArrayBuffer *buf = (JanetTArrayBuffer *)p;
free(buf->data);
return 0;
}
static void ta_buffer_marshal(void *p, JanetMarshalContext *ctx) {
TA_Buffer *buf = (TA_Buffer *)p;
JanetTArrayBuffer *buf = (JanetTArrayBuffer *)p;
janet_marshal_int(ctx, buf->size);
janet_marshal_int(ctx, buf->flags);
janet_marshal_bytes(ctx, buf->data, buf->size);
}
static void ta_buffer_unmarshal(void *p, JanetMarshalContext *ctx) {
TA_Buffer *buf = (TA_Buffer *)p;
JanetTArrayBuffer *buf = (JanetTArrayBuffer *)p;
uint32_t size;
janet_unmarshal_uint(ctx, &size);
ta_buffer_init(buf, size); // warning if indianess <> platform ??
@ -146,24 +130,18 @@ static const JanetAbstractType ta_buffer_type = {
ta_buffer_unmarshal,
};
typedef struct {
TA_Buffer *buffer;
void *data; /* pointer inside buffer->data */
size_t size;
size_t stride;
TA_Type type;
} TA_View;
static int ta_mark(void *p, size_t s) {
(void) s;
TA_View *view = (TA_View *)p;
JanetTArrayView *view = (JanetTArrayView *)p;
janet_mark(janet_wrap_abstract(view->buffer));
return 0;
}
static void ta_view_marshal(void *p, JanetMarshalContext *ctx) {
TA_View *view = (TA_View *)p;
JanetTArrayView *view = (JanetTArrayView *)p;
size_t offset = (view->buffer->data - (uint8_t *)(view->data));
janet_marshal_int(ctx, view->size);
janet_marshal_int(ctx, view->stride);
@ -174,7 +152,7 @@ static void ta_view_marshal(void *p, JanetMarshalContext *ctx) {
static void ta_view_unmarshal(void *p, JanetMarshalContext *ctx) {
TA_View *view = (TA_View *)p;
JanetTArrayView *view = (JanetTArrayView *)p;
size_t offset;
Janet buffer;
janet_unmarshal_size(ctx, &(view->size));
@ -182,7 +160,7 @@ static void ta_view_unmarshal(void *p, JanetMarshalContext *ctx) {
janet_unmarshal_uint(ctx, &(view->type));
janet_unmarshal_size(ctx, &offset);
janet_unmarshal_janet(ctx, &buffer);
view->buffer = (TA_Buffer *)janet_unwrap_abstract(buffer);
view->buffer = (JanetTArrayBuffer *)janet_unwrap_abstract(buffer);
view->data = view->buffer->data + offset;
}
@ -192,11 +170,11 @@ static void ta_view_unmarshal(void *p, JanetMarshalContext *ctx) {
#define DEFINE_VIEW_TYPE(thetype) \
typedef struct { \
TA_Buffer * buffer; \
JanetTArrayBuffer * buffer; \
ta_##thetype##_t * data; \
size_t size; \
size_t stride; \
TA_Type type; \
JanetTArrayType type; \
} TA_View_##thetype ;
@ -232,11 +210,11 @@ void ta_put_##type(void *p, Janet key,Janet value) { \
}
#define DEFINE_VIEW_INITIALIZER(thetype) \
static TA_View * ta_init_##thetype(TA_View * view,TA_Buffer * buf,size_t size,size_t offset,size_t stride) { \
static JanetTArrayView * ta_init_##thetype(JanetTArrayView * view,JanetTArrayBuffer * buf,size_t size,size_t offset,size_t stride) { \
TA_View_##thetype * tview=(TA_View_##thetype *) view; \
size_t buf_size=offset+(size-1)*(sizeof(ta_##thetype##_t))*stride+1; \
if (buf==NULL) { \
buf=(TA_Buffer *)janet_abstract(&ta_buffer_type,sizeof(TA_Buffer)); \
buf=(JanetTArrayBuffer *)janet_abstract(&ta_buffer_type,sizeof(JanetTArrayBuffer)); \
ta_buffer_init(buf,buf_size); \
} \
if (buf->size<buf_size) { \
@ -246,7 +224,7 @@ void ta_put_##type(void *p, Janet key,Janet value) { \
tview->stride=stride; \
tview->size=size; \
tview->data=(ta_##thetype##_t *)(buf->data+offset); \
tview->type=TA_TYPE_##thetype; \
tview->type=JANET_TARRAY_TYPE_##thetype; \
return view; \
};
@ -303,7 +281,7 @@ static const JanetAbstractType ta_array_types[] = {
static int is_ta_type(Janet x) {
static int is_ta_anytype(Janet x) {
if (janet_checktype(x, JANET_ABSTRACT)) {
const JanetAbstractType *at = janet_abstract_type(janet_unwrap_abstract(x));
for (size_t i = 0; i < TA_COUNT_TYPES; i++) {
@ -313,34 +291,22 @@ static int is_ta_type(Janet x) {
return 0;
}
#undef VIEW_ABSTRACT_INFO_INIT
static int is_ta_type(Janet x, JanetTArrayType type) {
return (janet_checktype(x, JANET_ABSTRACT) && (type < TA_COUNT_TYPES) &&
(janet_abstract_type(janet_unwrap_abstract(x))== &ta_array_types[type])) ? 1 : 0;
}
#define CASE_TYPE_INITIALIZE(type) case TA_TYPE_##type : ta_init_##type(view,buffer,size,offset,stride); break
#define CASE_TYPE_INITIALIZE(type) case JANET_TARRAY_TYPE_##type : ta_init_##type(view,buffer,size,offset,stride); break
static Janet cfun_typed_array_new(int32_t argc, Janet *argv) {
janet_arity(argc, 2, 5);
size_t offset = 0;
size_t stride = 1;
TA_Buffer *buffer = NULL;
const uint8_t *keyw = janet_getkeyword(argv, 0);
TA_Type type = get_ta_type_by_name(keyw);
size_t size = (size_t)janet_getinteger(argv, 1);
if (argc > 2)
stride = (size_t)janet_getinteger(argv, 2);
if (argc > 3)
offset = (size_t)janet_getinteger(argv, 3);
if (argc > 4) {
if (is_ta_type(argv[4])) {
TA_View *view = (TA_View *)janet_unwrap_abstract(argv[4]);
offset = (view->buffer->data - (uint8_t *)(view->data)) + offset * ta_type_sizes[view->type];
stride *= view->stride;
buffer = view->buffer;
} else {
buffer = (TA_Buffer *)janet_getabstract(argv, 4, &ta_buffer_type);
}
}
TA_View *view = janet_abstract(&ta_array_types[type], sizeof(TA_View));
JanetTArrayBuffer * janet_tarray_buffer(size_t size) {
JanetTArrayBuffer *buf = (JanetTArrayBuffer *)janet_abstract(&ta_buffer_type, sizeof(JanetTArrayBuffer));
ta_buffer_init(buf, size);
return buf;
}
JanetTArrayView * janet_tarray_view(JanetTArrayType type,size_t size,size_t stride,size_t offset,JanetTArrayBuffer *buffer) {
JanetTArrayView *view = janet_abstract(&ta_array_types[type], sizeof(JanetTArrayView));
switch (type) {
CASE_TYPE_INITIALIZE(uint8);
CASE_TYPE_INITIALIZE(int8);
@ -352,39 +318,93 @@ static Janet cfun_typed_array_new(int32_t argc, Janet *argv) {
CASE_TYPE_INITIALIZE(int64);
CASE_TYPE_INITIALIZE(float32);
CASE_TYPE_INITIALIZE(float64);
default : janet_panic("bad typed array type");
}
return janet_wrap_abstract(view);
return view;
}
#undef CASE_TYPE_INITIALIZE
JanetTArrayBuffer *janet_gettarray_buffer(const Janet *argv, int32_t n) {
return (JanetTArrayBuffer *)janet_getabstract(argv, n, &ta_buffer_type);
}
int janet_is_tarray_view(Janet x,JanetTArrayType type) {
return (type==JANET_TARRAY_TYPE_any) ? is_ta_anytype(x) : is_ta_type(x,type);
}
int janet_tarray_type_size(JanetTArrayType type) {
return (type<TA_COUNT_TYPES)? ta_type_sizes[type] : 0 ;
}
JanetTArrayView * janet_gettarray_view(const Janet *argv, int32_t n,JanetTArrayType type) {
if (janet_is_tarray_view(argv[n],type)) {
return (JanetTArrayView *)janet_unwrap_abstract(argv[n]);
} else {
janet_panicf("bad slot #%d, expected typed array of type %s, got %v",
n, (type <= JANET_TARRAY_TYPE_any) ? ta_type_names[type] : "?" , argv[n]);
return NULL;
}
}
static Janet cfun_typed_array_new(int32_t argc, Janet *argv) {
janet_arity(argc, 2, 5);
size_t offset = 0;
size_t stride = 1;
JanetTArrayBuffer *buffer = NULL;
const uint8_t *keyw = janet_getkeyword(argv, 0);
JanetTArrayType type = get_ta_type_by_name(keyw);
size_t size = (size_t)janet_getinteger(argv, 1);
if (argc > 2)
stride = (size_t)janet_getinteger(argv, 2);
if (argc > 3)
offset = (size_t)janet_getinteger(argv, 3);
if (argc > 4) {
if (is_ta_anytype(argv[4])) {
JanetTArrayView *view = (JanetTArrayView *)janet_unwrap_abstract(argv[4]);
offset = (view->buffer->data - (uint8_t *)(view->data)) + offset * ta_type_sizes[view->type];
stride *= view->stride;
buffer = view->buffer;
} else {
buffer = (JanetTArrayBuffer *)janet_getabstract(argv, 4, &ta_buffer_type);
}
}
JanetTArrayView * view =janet_tarray_view(type,size,stride,offset,buffer);
return janet_wrap_abstract(view);
}
static Janet cfun_typed_array_buffer(int32_t argc, Janet *argv) {
janet_fixarity(argc, 1);
if (is_ta_type(argv[0])) {
TA_View *view = (TA_View *)janet_unwrap_abstract(argv[0]);
if (is_ta_anytype(argv[0])) {
JanetTArrayView *view = (JanetTArrayView *)janet_unwrap_abstract(argv[0]);
return janet_wrap_abstract(view->buffer);
}
size_t size = (size_t)janet_getinteger(argv, 0);
TA_Buffer *buf = (TA_Buffer *)janet_abstract(&ta_buffer_type, sizeof(TA_Buffer));
ta_buffer_init(buf, size);
JanetTArrayBuffer *buf = janet_tarray_buffer(size);
return janet_wrap_abstract(buf);
}
static Janet cfun_typed_array_size(int32_t argc, Janet *argv) {
janet_fixarity(argc, 1);
if (is_ta_type(argv[0])) {
TA_View *view = (TA_View *)janet_unwrap_abstract(argv[0]);
if (is_ta_anytype(argv[0])) {
JanetTArrayView *view = (JanetTArrayView *)janet_unwrap_abstract(argv[0]);
return janet_wrap_number(view->size);
}
TA_Buffer *buf = (TA_Buffer *)janet_getabstract(argv, 0, &ta_buffer_type);
JanetTArrayBuffer *buf = (JanetTArrayBuffer *)janet_getabstract(argv, 0, &ta_buffer_type);
return janet_wrap_number(buf->size);
}
static Janet cfun_typed_array_properties(int32_t argc, Janet *argv) {
janet_fixarity(argc, 1);
if (!is_ta_type(argv[0]))
if (!is_ta_anytype(argv[0]))
janet_panic("expected typed array");
TA_View *view = (TA_View *)janet_unwrap_abstract(argv[0]);
JanetTArrayView *view = (JanetTArrayView *)janet_unwrap_abstract(argv[0]);
JanetKV *props = janet_struct_begin(6);
janet_struct_put(props, janet_ckeywordv("size"), janet_wrap_number(view->size));
janet_struct_put(props, janet_ckeywordv("byte-offset"), janet_wrap_number((uint8_t *)(view->data) - view->buffer->data));
@ -412,63 +432,57 @@ static Janet cfun_abstract_properties(int32_t argc, Janet *argv) {
static Janet cfun_typed_array_copy_bytes(int32_t argc, Janet *argv) {
janet_arity(argc, 4, 5);
if (is_ta_type(argv[0]) && is_ta_type(argv[2])) {
TA_View *src = (TA_View *)janet_unwrap_abstract(argv[0]);
size_t index_src = (size_t)janet_getinteger(argv, 1);
TA_View *dst = (TA_View *)janet_unwrap_abstract(argv[2]);
size_t index_dst = (size_t)janet_getinteger(argv, 3);
size_t count = (argc == 5) ? (size_t)janet_getinteger(argv, 4) : 1;
size_t src_atom_size = ta_type_sizes[src->type];
size_t dst_atom_size = ta_type_sizes[dst->type];
size_t step_src = src->stride * src_atom_size;
size_t step_dst = dst->stride * dst_atom_size;
size_t pos_src = ((uint8_t *)(src->data) - src->buffer->data) + (index_src * step_src);
size_t pos_dst = ((uint8_t *)(dst->data) - dst->buffer->data) + (index_dst * step_dst);
uint8_t *ps = src->buffer->data + pos_src, * pd = dst->buffer->data + pos_dst;
if ((pos_dst + (count - 1)*step_dst + src_atom_size <= dst->buffer->size) &&
(pos_src + (count - 1)*step_src + src_atom_size <= src->buffer->size)) {
for (size_t i = 0; i < count; i++) {
memmove(pd, ps, src_atom_size);
pd += step_dst;
ps += step_src;
}
} else
janet_panic("typed array copy out of bound");
JanetTArrayView *src = janet_gettarray_view(argv,0,JANET_TARRAY_TYPE_any);
size_t index_src = (size_t)janet_getinteger(argv, 1);
JanetTArrayView *dst = janet_gettarray_view(argv,2,JANET_TARRAY_TYPE_any);
size_t index_dst = (size_t)janet_getinteger(argv, 3);
size_t count = (argc == 5) ? (size_t)janet_getinteger(argv, 4) : 1;
size_t src_atom_size = ta_type_sizes[src->type];
size_t dst_atom_size = ta_type_sizes[dst->type];
size_t step_src = src->stride * src_atom_size;
size_t step_dst = dst->stride * dst_atom_size;
size_t pos_src = ((uint8_t *)(src->data) - src->buffer->data) + (index_src * step_src);
size_t pos_dst = ((uint8_t *)(dst->data) - dst->buffer->data) + (index_dst * step_dst);
uint8_t *ps = src->buffer->data + pos_src, * pd = dst->buffer->data + pos_dst;
if ((pos_dst + (count - 1)*step_dst + src_atom_size <= dst->buffer->size) &&
(pos_src + (count - 1)*step_src + src_atom_size <= src->buffer->size)) {
for (size_t i = 0; i < count; i++) {
memmove(pd, ps, src_atom_size);
pd += step_dst;
ps += step_src;
}
} else {
janet_panic("expected typed array");
}
janet_panic("typed array copy out of bound");
}
return janet_wrap_nil();
}
static Janet cfun_typed_array_swap_bytes(int32_t argc, Janet *argv) {
janet_arity(argc, 4, 5);
if (is_ta_type(argv[0]) && is_ta_type(argv[2])) {
TA_View *src = (TA_View *)janet_unwrap_abstract(argv[0]);
size_t index_src = (size_t)janet_getinteger(argv, 1);
TA_View *dst = (TA_View *)janet_unwrap_abstract(argv[2]);
size_t index_dst = (size_t)janet_getinteger(argv, 3);
size_t count = (argc == 5) ? (size_t)janet_getinteger(argv, 4) : 1;
size_t src_atom_size = ta_type_sizes[src->type];
size_t dst_atom_size = ta_type_sizes[dst->type];
size_t step_src = src->stride * src_atom_size;
size_t step_dst = dst->stride * dst_atom_size;
size_t pos_src = ((uint8_t *)(src->data) - src->buffer->data) + (index_src * step_src);
size_t pos_dst = ((uint8_t *)(dst->data) - dst->buffer->data) + (index_dst * step_dst);
uint8_t *ps = src->buffer->data + pos_src, * pd = dst->buffer->data + pos_dst;
uint8_t temp[TA_ATOM_MAXSIZE];
if ((pos_dst + (count - 1)*step_dst + src_atom_size <= dst->buffer->size) &&
(pos_src + (count - 1)*step_src + src_atom_size <= src->buffer->size)) {
for (size_t i = 0; i < count; i++) {
memcpy(temp, ps, src_atom_size);
memcpy(ps, pd, src_atom_size);
memcpy(pd, temp, src_atom_size);
pd += step_dst;
ps += step_src;
}
} else
janet_panic("typed array swap out of bound");
JanetTArrayView *src = janet_gettarray_view(argv,0,JANET_TARRAY_TYPE_any);
size_t index_src = (size_t)janet_getinteger(argv, 1);
JanetTArrayView *dst = janet_gettarray_view(argv,2,JANET_TARRAY_TYPE_any);
size_t index_dst = (size_t)janet_getinteger(argv, 3);
size_t count = (argc == 5) ? (size_t)janet_getinteger(argv, 4) : 1;
size_t src_atom_size = ta_type_sizes[src->type];
size_t dst_atom_size = ta_type_sizes[dst->type];
size_t step_src = src->stride * src_atom_size;
size_t step_dst = dst->stride * dst_atom_size;
size_t pos_src = ((uint8_t *)(src->data) - src->buffer->data) + (index_src * step_src);
size_t pos_dst = ((uint8_t *)(dst->data) - dst->buffer->data) + (index_dst * step_dst);
uint8_t *ps = src->buffer->data + pos_src, * pd = dst->buffer->data + pos_dst;
uint8_t temp[TA_ATOM_MAXSIZE];
if ((pos_dst + (count - 1)*step_dst + src_atom_size <= dst->buffer->size) &&
(pos_src + (count - 1)*step_src + src_atom_size <= src->buffer->size)) {
for (size_t i = 0; i < count; i++) {
memcpy(temp, ps, src_atom_size);
memcpy(ps, pd, src_atom_size);
memcpy(pd, temp, src_atom_size);
pd += step_dst;
ps += step_src;
}
} else {
janet_panic("expected typed array");
janet_panic("typed array swap out of bound");
}
return janet_wrap_nil();
}

44
src/include/janet.h
View File

@ -1251,7 +1251,7 @@ JANET_API int32_t janet_gethalfrange(const Janet *argv, int32_t n, int32_t lengt
JANET_API int32_t janet_getargindex(const Janet *argv, int32_t n, int32_t length, const char *which);
/* Marshal API */
JANET_API void janet_marshal_int(JanetMarshalContext *ctx, int32_t value);
JANET_API void janet_marshal_byte(JanetMarshalContext *ctx, uint8_t value);
JANET_API void janet_marshal_bytes(JanetMarshalContext *ctx, const uint8_t *bytes, int32_t len);
@ -1264,15 +1264,47 @@ JANET_API void janet_unmarshal_byte(JanetMarshalContext *ctx, uint8_t *b);
JANET_API void janet_unmarshal_bytes(JanetMarshalContext *ctx, uint8_t *dest, int32_t len);
JANET_API void janet_unmarshal_janet(JanetMarshalContext *ctx, Janet *out);
JANET_API void janet_register_abstract_type(const JanetAbstractType *at);
JANET_API const JanetAbstractType *janet_get_abstract_type(Janet key);
#ifdef JANET_TYPED_ARRAY
typedef enum {
JANET_TARRAY_TYPE_uint8,
JANET_TARRAY_TYPE_int8,
JANET_TARRAY_TYPE_uint16,
JANET_TARRAY_TYPE_int16,
JANET_TARRAY_TYPE_uint32,
JANET_TARRAY_TYPE_int32,
JANET_TARRAY_TYPE_uint64,
JANET_TARRAY_TYPE_int64,
JANET_TARRAY_TYPE_float32,
JANET_TARRAY_TYPE_float64,
JANET_TARRAY_TYPE_any,
} JanetTArrayType;
typedef struct {
uint8_t *data;
size_t size;
uint32_t flags;
} JanetTArrayBuffer;
typedef struct {
JanetTArrayBuffer *buffer;
void *data; /* pointer inside buffer->data */
size_t size;
size_t stride;
JanetTArrayType type;
} JanetTArrayView;
JANET_API JanetTArrayBuffer * janet_tarray_buffer(size_t size);
JANET_API JanetTArrayView * janet_tarray_view(JanetTArrayType type,size_t size,size_t stride,size_t offset,JanetTArrayBuffer *buffer);
JANET_API int janet_is_tarray_view(Janet x,JanetTArrayType type);
JANET_API int janet_tarray_type_size(JanetTArrayType type);
JANET_API JanetTArrayBuffer * janet_gettarray_buffer(const Janet *argv, int32_t n);
JANET_API JanetTArrayView * janet_gettarray_view(const Janet *argv, int32_t n,JanetTArrayType type);
#endif
/***** END SECTION MAIN *****/