nlua_data.c File Reference

Handles datas. More...

#include "nlua_data.h"
#include "nluadef.h"

Include dependency graph for nlua_data.c:

Go to the source code of this file.

Macros
#define	POS(U, V, W)

Functions
static size_t	dataL_checkpos (lua_State *L, const LuaData_t *ld, long pos)
static int	dataL_gc (lua_State *L)
	Frees a data.
static int	dataL_eq (lua_State *L)
	Compares two datas to see if they are the same.
static int	dataL_new (lua_State *L)
	Opens a new data.
static int	dataL_get (lua_State *L)
	Gets the value of an element.
static int	dataL_set (lua_State *L)
	Sets the value of an element.
static int	dataL_getSize (lua_State *L)
	Gets the number of elements.
static int	dataL_getString (lua_State *L)
	Returns the data contents as a string.
static int	dataL_paste (lua_State *L)
	Writes the contents of "source" into "dest".
static int	dataL_addWeighted (lua_State *L)
	Returns alpha*A + beta*B + bias.
static int	dataL_convolve2d (lua_State *L)
	Does a convolution. You'd rather be writing shaders, right?
int	nlua_loadData (nlua_env env)
	Loads the data library.
LuaData_t *	lua_todata (lua_State *L, int ind)
	Lua bindings to interact with datas.
LuaData_t *	luaL_checkdata (lua_State *L, int ind)
	Gets data at index or raises error if there is no data at index.
LuaData_t *	lua_pushdata (lua_State *L, LuaData_t data)
	Pushes a data on the stack.
int	lua_isdata (lua_State *L, int ind)
	Checks to see if ind is a data.

Variables
static const luaL_Reg	dataL_methods []

Detailed Description

Handles datas.

Definition in file nlua_data.c.

Macro Definition Documentation

POS

#define POS	(		U,
			V,
			W )

Value:

( 4 * ( ( V ) * ( W ) + ( U ) ) )

Function Documentation

dataL_addWeighted()

int dataL_addWeighted ( lua_State * L )

static

Returns alpha*A + beta*B + bias.

Lua function parameter: Data A as above. Lua function parameter: Data B as above. Lua function parameter: number alpha as above. Lua function parameter: number beta as above. Lua function parameter: number bias as above. Lua return parameter: Data alpha*A + beta*B + bias.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: addWeighted

Definition at line 321 of file nlua_data.c.

dataL_checkpos()

size_t dataL_checkpos ( lua_State * L, const LuaData_t * ld, long pos )

static

Definition at line 184 of file nlua_data.c.

dataL_convolve2d()

int dataL_convolve2d ( lua_State * L )

static

Does a convolution. You'd rather be writing shaders, right?

Lua function parameter: Data I left-hand side of the convolution operator. Lua function parameter: number iw width of I. Lua function parameter: number ih height of I. Lua function parameter: Data K right-hand side of the convolution operator. Lua function parameter: number kw width of K. Lua function parameter: number kh height of K. Lua return parameter: (I*K, width, height)

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: convolve2d

Definition at line 372 of file nlua_data.c.

dataL_eq()

int dataL_eq ( lua_State * L )

static

Compares two datas to see if they are the same.

Lua function parameter: Data d1 Data 1 to compare. Lua function parameter: Data d2 Data 2 to compare. Lua return parameter: boolean true if both datas are the same.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: __eq

Definition at line 147 of file nlua_data.c.

dataL_gc()

int dataL_gc ( lua_State * L )

static

Frees a data.

Lua function parameter: Data data Data to free.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: __gc

Definition at line 132 of file nlua_data.c.

dataL_get()

int dataL_get ( lua_State * L )

static

Gets the value of an element.

Lua function parameter: Data data Data to index. Lua function parameter: number pos Element position. Lua return parameter: number The entry.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: get

Definition at line 205 of file nlua_data.c.

dataL_getSize()

int dataL_getSize ( lua_State * L )

static

Gets the number of elements.

Lua function parameter: Data data ... Lua return parameter: number Data size.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: getSize

Definition at line 250 of file nlua_data.c.

dataL_getString()

int dataL_getString ( lua_State * L )

static

Returns the data contents as a string.

Lua function parameter: Data data ... Lua return parameter: string The bytes inside.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: getString

Definition at line 264 of file nlua_data.c.

dataL_new()

int dataL_new ( lua_State * L )

static

Opens a new data.

Lua function parameter: number size Size to allocate for data. Lua function parameter: string type Type of the data to create ("number") Lua return parameter: Data New data object.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: new

Definition at line 168 of file nlua_data.c.

dataL_paste()

int dataL_paste ( lua_State * L )

static

Writes the contents of "source" into "dest".

Lua function parameter: Data dest Destination. Lua function parameter: Data source Source. Lua function parameter: number dx Offset from start of destination. Lua function parameter: number sx Offset from start of source. Lua function parameter: number sw Number of data elements to copy.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: paste

Definition at line 281 of file nlua_data.c.

dataL_set()

int dataL_set ( lua_State * L )

static

Sets the value of an element.

Lua function parameter: Data data Data to index. Lua function parameter: number pos Element position. Lua function parameter: number value Value to set it to.

Parameters

L

Lua State

Returns

Number of variables on the Lua State stack.

Lua function: set

Definition at line 227 of file nlua_data.c.

lua_isdata()

int lua_isdata	(	lua_State *	L,
		int	ind )

Checks to see if ind is a data.

Parameters

L	Lua state to check.
ind	Index position to check.

Returns

1 if ind is a data.

Definition at line 110 of file nlua_data.c.

lua_pushdata()

LuaData_t * lua_pushdata	(	lua_State *	L,
		LuaData_t	data )

Pushes a data on the stack.

Parameters

L	Lua state to push data into.
data	Data to push.

Returns

Newly pushed data.

Definition at line 94 of file nlua_data.c.

lua_todata()

LuaData_t * lua_todata	(	lua_State *	L,
		int	ind )

Lua bindings to interact with datas.

Lua module: data

Gets data at index.

Parameters

L	Lua state to get data from.
ind	Index position to find the data.

Returns

Data found at the index in the state.

Definition at line 69 of file nlua_data.c.

luaL_checkdata()

LuaData_t * luaL_checkdata	(	lua_State *	L,
		int	ind )

Gets data at index or raises error if there is no data at index.

Parameters

L	Lua state to get data from.
ind	Index position to find data.

Returns

Data found at the index in the state.

Definition at line 80 of file nlua_data.c.

nlua_loadData()

int nlua_loadData

(

nlua_env

env

)

Loads the data library.

Parameters

env	Environment to load data library into.

Returns

0 on success.

Definition at line 51 of file nlua_data.c.

Variable Documentation

dataL_methods

const luaL_Reg dataL_methods[]

static

Initial value:

= {
   { "__gc", dataL_gc },
   { "__eq", dataL_eq },
   { "new", dataL_new },
   { "get", dataL_get },
   { "set", dataL_set },
   { "getSize", dataL_getSize },
   { "getString", dataL_getString },
   { "paste", dataL_paste },
   { "addWeighted", dataL_addWeighted },
   { "convolve2d", dataL_convolve2d },
   { 0, 0 } }

Data metatable methods.

Definition at line 32 of file nlua_data.c.