/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/** @file rs_types.rsh
 *
 *  Define the standard Renderscript types
 *
 *  Integers
 *  8 bit: char, int8_t
 *  16 bit: short, int16_t
 *  32 bit: int, in32_t
 *  64 bit: long, long long, int64_t
 *
 *  Unsigned Integers
 *  8 bit: uchar, uint8_t
 *  16 bit: ushort, uint16_t
 *  32 bit: uint, uint32_t
 *  64 bit: ulong, uint64_t
 *
 *  Floating point
 *  32 bit: float
 *  64 bit: double
 *
 *  Vectors of length 2, 3, and 4 are supported for all the types above.
 *
 */

#ifndef __RS_TYPES_RSH__
#define __RS_TYPES_RSH__

/* Constants */
#define M_E         2.718281828459045235360287471352662498f     /* e */
#define M_LOG2E     1.442695040888963407359924681001892137f     /* log_2 e */
#define M_LOG10E    0.434294481903251827651128918916605082f     /* log_10 e */
#define M_LN2       0.693147180559945309417232121458176568f     /* log_e 2 */
#define M_LN10      2.302585092994045684017991454684364208f     /* log_e 10 */
#define M_PI        3.141592653589793238462643383279502884f     /* pi */
#define M_PI_2      1.570796326794896619231321691639751442f     /* pi/2 */
#define M_PI_4      0.785398163397448309615660845819875721f     /* pi/4 */
#define M_1_PI      0.318309886183790671537767526745028724f     /* 1/pi */
#define M_2_PIl     0.636619772367581343075535053490057448f     /* 2/pi */
#define M_2_SQRTPI  1.128379167095512573896158903121545172f     /* 2/sqrt(pi) */
#define M_SQRT2     1.414213562373095048801688724209698079f     /* sqrt(2) */
#define M_SQRT1_2   0.707106781186547524400844362104849039f     /* 1/sqrt(2) */

#include "stdbool.h"
/**
 * 8 bit integer type
 */
typedef char int8_t;
/**
 * 16 bit integer type
 */
typedef short int16_t;
/**
 * 32 bit integer type
 */
typedef int int32_t;
/**
 * 64 bit integer type
 */
typedef long long int64_t;
/**
 * 8 bit unsigned integer type
 */
typedef unsigned char uint8_t;
/**
 * 16 bit unsigned integer type
 */
typedef unsigned short uint16_t;
/**
 * 32 bit unsigned integer type
 */
typedef unsigned int uint32_t;
/**
 * 64 bit unsigned integer type
 */
typedef unsigned long long uint64_t;
/**
 * 8 bit unsigned integer type
 */
typedef uint8_t uchar;
/**
 * 16 bit unsigned integer type
 */
typedef uint16_t ushort;
/**
 * 32 bit unsigned integer type
 */
typedef uint32_t uint;
/**
 * Typedef for unsigned long (use for 64-bit unsigned integers)
 */
typedef uint64_t ulong;
/**
 * Typedef for unsigned int
 */
typedef uint32_t size_t;
/**
 * Typedef for int (use for 32-bit integers)
 */
typedef int32_t ssize_t;

/**
 * \brief Opaque handle to a Renderscript element.
 *
 * See: android.renderscript.Element
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_element;
/**
 * \brief Opaque handle to a Renderscript type.
 *
 * See: android.renderscript.Type
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_type;
/**
 * \brief Opaque handle to a Renderscript allocation.
 *
 * See: android.renderscript.Allocation
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_allocation;
/**
 * \brief Opaque handle to a Renderscript sampler object.
 *
 * See: android.renderscript.Sampler
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_sampler;
/**
 * \brief Opaque handle to a Renderscript script object.
 *
 * See: android.renderscript.ScriptC
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_script;
/**
 * \brief Opaque handle to a Renderscript mesh object.
 *
 * See: android.renderscript.Mesh
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_mesh;
/**
 * \brief Opaque handle to a Renderscript Path object.
 *
 * See: android.renderscript.Path
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_path;
/**
 * \brief Opaque handle to a Renderscript ProgramFragment object.
 *
 * See: android.renderscript.ProgramFragment
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_program_fragment;
/**
 * \brief Opaque handle to a Renderscript ProgramVertex object.
 *
 * See: android.renderscript.ProgramVertex
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_program_vertex;
/**
 * \brief Opaque handle to a Renderscript ProgramRaster object.
 *
 * See: android.renderscript.ProgramRaster
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_program_raster;
/**
 * \brief Opaque handle to a Renderscript ProgramStore object.
 *
 * See: android.renderscript.ProgramStore
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_program_store;
/**
 * \brief Opaque handle to a Renderscript font object.
 *
 * See: android.renderscript.Font
 */
typedef struct { const int* const p; } __attribute__((packed, aligned(4))) rs_font;

/**
 * Vector version of the basic float type.
 * Provides two float fields packed into a single 64 bit field with 64 bit
 * alignment.
 */
typedef float float2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic float type. Provides three float fields packed
 * into a single 128 bit field with 128 bit alignment.
 */
typedef float float3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic float type.
 * Provides four float fields packed into a single 128 bit field with 128 bit
 * alignment.
 */
typedef float float4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic double type. Provides two double fields packed
 * into a single 128 bit field with 128 bit alignment.
 */
typedef double double2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic double type. Provides three double fields packed
 * into a single 256 bit field with 256 bit alignment.
 */
typedef double double3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic double type. Provides four double fields packed
 * into a single 256 bit field with 256 bit alignment.
 */
typedef double double4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic uchar type. Provides two uchar fields packed
 * into a single 16 bit field with 16 bit alignment.
 */
typedef uchar uchar2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic uchar type. Provides three uchar fields packed
 * into a single 32 bit field with 32 bit alignment.
 */
typedef uchar uchar3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic uchar type. Provides four uchar fields packed
 * into a single 32 bit field with 32 bit alignment.
 */
typedef uchar uchar4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic ushort type. Provides two ushort fields packed
 * into a single 32 bit field with 32 bit alignment.
 */
typedef ushort ushort2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic ushort type. Provides three ushort fields packed
 * into a single 64 bit field with 64 bit alignment.
 */
typedef ushort ushort3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic ushort type. Provides four ushort fields packed
 * into a single 64 bit field with 64 bit alignment.
 */
typedef ushort ushort4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic uint type. Provides two uint fields packed into a
 * single 64 bit field with 64 bit alignment.
 */
typedef uint uint2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic uint type. Provides three uint fields packed into
 * a single 128 bit field with 128 bit alignment.
 */
typedef uint uint3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic uint type. Provides four uint fields packed into
 * a single 128 bit field with 128 bit alignment.
 */
typedef uint uint4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic ulong type. Provides two ulong fields packed into
 * a single 128 bit field with 128 bit alignment.
 */
typedef ulong ulong2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic ulong type. Provides three ulong fields packed
 * into a single 256 bit field with 256 bit alignment.
 */
typedef ulong ulong3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic ulong type. Provides four ulong fields packed
 * into a single 256 bit field with 256 bit alignment.
 */
typedef ulong ulong4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic char type. Provides two char fields packed into a
 * single 16 bit field with 16 bit alignment.
 */
typedef char char2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic char type. Provides three char fields packed into
 * a single 32 bit field with 32 bit alignment.
 */
typedef char char3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic char type. Provides four char fields packed into
 * a single 32 bit field with 32 bit alignment.
 */
typedef char char4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic short type. Provides two short fields packed into
 * a single 32 bit field with 32 bit alignment.
 */
typedef short short2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic short type. Provides three short fields packed
 * into a single 64 bit field with 64 bit alignment.
 */
typedef short short3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic short type. Provides four short fields packed
 * into a single 64 bit field with 64 bit alignment.
 */
typedef short short4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic int type. Provides two int fields packed into a
 * single 64 bit field with 64 bit alignment.
 */
typedef int int2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic int type. Provides three int fields packed into a
 * single 128 bit field with 128 bit alignment.
 */
typedef int int3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic int type. Provides two four fields packed into a
 * single 128 bit field with 128 bit alignment.
 */
typedef int int4 __attribute__((ext_vector_type(4)));

/**
 * Vector version of the basic long type. Provides two long fields packed into a
 * single 128 bit field with 128 bit alignment.
 */
typedef long long2 __attribute__((ext_vector_type(2)));
/**
 * Vector version of the basic long type. Provides three long fields packed into
 * a single 256 bit field with 256 bit alignment.
 */
typedef long long3 __attribute__((ext_vector_type(3)));
/**
 * Vector version of the basic long type. Provides four long fields packed into
 * a single 256 bit field with 256 bit alignment.
 */
typedef long long4 __attribute__((ext_vector_type(4)));

/**
 * \brief 4x4 float matrix
 *
 * Native holder for RS matrix.  Elements are stored in the array at the
 * location [row*4 + col]
 */
typedef struct {
    float m[16];
} rs_matrix4x4;
/**
 * \brief 3x3 float matrix
 *
 * Native holder for RS matrix.  Elements are stored in the array at the
 * location [row*3 + col]
 */
typedef struct {
    float m[9];
} rs_matrix3x3;
/**
 * \brief 2x2 float matrix
 *
 * Native holder for RS matrix.  Elements are stored in the array at the
 * location [row*2 + col]
 */
typedef struct {
    float m[4];
} rs_matrix2x2;

/**
 * quaternion type for use with the quaternion functions
 */
typedef float4 rs_quaternion;

#define RS_PACKED __attribute__((packed, aligned(4)))
#define NULL ((void *)0)

#if (defined(RS_VERSION) && (RS_VERSION >= 14))

/**
 * \brief Enum for selecting cube map faces
 */
typedef enum {
    RS_ALLOCATION_CUBEMAP_FACE_POSITIVE_X = 0,
    RS_ALLOCATION_CUBEMAP_FACE_NEGATIVE_X = 1,
    RS_ALLOCATION_CUBEMAP_FACE_POSITIVE_Y = 2,
    RS_ALLOCATION_CUBEMAP_FACE_NEGATIVE_Y = 3,
    RS_ALLOCATION_CUBEMAP_FACE_POSITIVE_Z = 4,
    RS_ALLOCATION_CUBEMAP_FACE_NEGATIVE_Z = 5
} rs_allocation_cubemap_face;

/**
 * \brief Bitfield to specify the usage types for an allocation.
 *
 * These values are ORed together to specify which usages or memory spaces are
 * relevant to an allocation or an operation on an allocation.
 */
typedef enum {
    RS_ALLOCATION_USAGE_SCRIPT = 0x0001,
    RS_ALLOCATION_USAGE_GRAPHICS_TEXTURE = 0x0002,
    RS_ALLOCATION_USAGE_GRAPHICS_VERTEX = 0x0004,
    RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS = 0x0008,
    RS_ALLOCATION_USAGE_GRAPHICS_RENDER_TARGET = 0x0010
} rs_allocation_usage_type;

#endif //defined(RS_VERSION) && (RS_VERSION >= 14)

// New API's
#if (defined(RS_VERSION) && (RS_VERSION >= 16))

/**
 * Describes the way mesh vertex data is interpreted when rendering
 *
 **/
typedef enum {
    /**
    * Vertex data will be rendered as a series of points
    */
    RS_PRIMITIVE_POINT              = 0,
    /**
    * Vertex pairs will be rendered as lines
    */
    RS_PRIMITIVE_LINE               = 1,
    /**
    * Vertex data will be rendered as a connected line strip
    */
    RS_PRIMITIVE_LINE_STRIP         = 2,
    /**
    * Vertices will be rendered as individual triangles
    */
    RS_PRIMITIVE_TRIANGLE           = 3,
    /**
    * Vertices will be rendered as a connected triangle strip
    * defined by the first three vertices with each additional
    * triangle defined by a new vertex
    */
    RS_PRIMITIVE_TRIANGLE_STRIP     = 4,
    /**
    * Vertices will be rendered as a sequence of triangles that all
    * share first vertex as the origin
    */
    RS_PRIMITIVE_TRIANGLE_FAN       = 5,

    /**
    * Invalid primitive
    */
    RS_PRIMITIVE_INVALID            = 100,
} rs_primitive;

/**
 * \brief Enumeration for possible element data types
 *
 * DataType represents the basic type information for a basic element.  The
 * naming convention follows.  For numeric types it is FLOAT,
 * SIGNED, or UNSIGNED followed by the _BITS where BITS is the
 * size of the data.  BOOLEAN is a true / false (1,0)
 * represented in an 8 bit container.  The UNSIGNED variants
 * with multiple bit definitions are for packed graphical data
 * formats and represent vectors with per vector member sizes
 * which are treated as a single unit for packing and alignment
 * purposes.
 *
 * MATRIX the three matrix types contain FLOAT_32 elements and are treated
 * as 32 bits for alignment purposes.
 *
 * RS_* objects.  32 bit opaque handles.
 */
typedef enum {
    RS_TYPE_NONE             = 0,
    RS_TYPE_FLOAT_32         = 2,
    RS_TYPE_FLOAT_64         = 3,
    RS_TYPE_SIGNED_8         = 4,
    RS_TYPE_SIGNED_16        = 5,
    RS_TYPE_SIGNED_32        = 6,
    RS_TYPE_SIGNED_64        = 7,
    RS_TYPE_UNSIGNED_8       = 8,
    RS_TYPE_UNSIGNED_16      = 9,
    RS_TYPE_UNSIGNED_32      = 10,
    RS_TYPE_UNSIGNED_64      = 11,

    RS_TYPE_BOOLEAN          = 12,

    RS_TYPE_UNSIGNED_5_6_5   = 13,
    RS_TYPE_UNSIGNED_5_5_5_1 = 14,
    RS_TYPE_UNSIGNED_4_4_4_4 = 15,

    RS_TYPE_MATRIX_4X4       = 16,
    RS_TYPE_MATRIX_3X3       = 17,
    RS_TYPE_MATRIX_2X2       = 18,

    RS_TYPE_ELEMENT          = 1000,
    RS_TYPE_TYPE             = 1001,
    RS_TYPE_ALLOCATION       = 1002,
    RS_TYPE_SAMPLER          = 1003,
    RS_TYPE_SCRIPT           = 1004,
    RS_TYPE_MESH             = 1005,
    RS_TYPE_PROGRAM_FRAGMENT = 1006,
    RS_TYPE_PROGRAM_VERTEX   = 1007,
    RS_TYPE_PROGRAM_RASTER   = 1008,
    RS_TYPE_PROGRAM_STORE    = 1009,
    RS_TYPE_FONT             = 1010,

    RS_TYPE_INVALID          = 10000,
} rs_data_type;

/**
 * \brief Enumeration for possible element data kind
 *
 * The special interpretation of the data if required.  This is primarly
 * useful for graphical data.  USER indicates no special interpretation is
 * expected.  PIXEL is used in conjunction with the standard data types for
 * representing texture formats.
 */
typedef enum {
    RS_KIND_USER         = 0,

    RS_KIND_PIXEL_L      = 7,
    RS_KIND_PIXEL_A      = 8,
    RS_KIND_PIXEL_LA     = 9,
    RS_KIND_PIXEL_RGB    = 10,
    RS_KIND_PIXEL_RGBA   = 11,
    RS_KIND_PIXEL_DEPTH  = 12,
    RS_KIND_PIXEL_YUV    = 13,

    RS_KIND_INVALID      = 100,
} rs_data_kind;

typedef enum {
    /**
    * Always drawn
    */
    RS_DEPTH_FUNC_ALWAYS        = 0,
    /**
    * Drawn if the incoming depth value is less than that in the
    * depth buffer
    */
    RS_DEPTH_FUNC_LESS          = 1,
    /**
    * Drawn if the incoming depth value is less or equal to that in
    * the depth buffer
    */
    RS_DEPTH_FUNC_LEQUAL        = 2,
    /**
    * Drawn if the incoming depth value is greater than that in the
    * depth buffer
    */
    RS_DEPTH_FUNC_GREATER       = 3,
    /**
    * Drawn if the incoming depth value is greater or equal to that
    * in the depth buffer
    */
    RS_DEPTH_FUNC_GEQUAL        = 4,
    /**
    * Drawn if the incoming depth value is equal to that in the
    * depth buffer
    */
    RS_DEPTH_FUNC_EQUAL         = 5,
    /**
    * Drawn if the incoming depth value is not equal to that in the
    * depth buffer
    */
    RS_DEPTH_FUNC_NOTEQUAL      = 6,
    /**
    * Invalid depth function
    */
    RS_DEPTH_FUNC_INVALID       = 100,
} rs_depth_func;

typedef enum {
    RS_BLEND_SRC_ZERO                   = 0,
    RS_BLEND_SRC_ONE                    = 1,
    RS_BLEND_SRC_DST_COLOR              = 2,
    RS_BLEND_SRC_ONE_MINUS_DST_COLOR    = 3,
    RS_BLEND_SRC_SRC_ALPHA              = 4,
    RS_BLEND_SRC_ONE_MINUS_SRC_ALPHA    = 5,
    RS_BLEND_SRC_DST_ALPHA              = 6,
    RS_BLEND_SRC_ONE_MINUS_DST_ALPHA    = 7,
    RS_BLEND_SRC_SRC_ALPHA_SATURATE     = 8,

    RS_BLEND_SRC_INVALID                = 100,
} rs_blend_src_func;

typedef enum {
    RS_BLEND_DST_ZERO                   = 0,
    RS_BLEND_DST_ONE                    = 1,
    RS_BLEND_DST_SRC_COLOR              = 2,
    RS_BLEND_DST_ONE_MINUS_SRC_COLOR    = 3,
    RS_BLEND_DST_SRC_ALPHA              = 4,
    RS_BLEND_DST_ONE_MINUS_SRC_ALPHA    = 5,
    RS_BLEND_DST_DST_ALPHA              = 6,
    RS_BLEND_DST_ONE_MINUS_DST_ALPHA    = 7,

    RS_BLEND_DST_INVALID                = 100,
} rs_blend_dst_func;

typedef enum {
    RS_CULL_BACK     = 0,
    RS_CULL_FRONT    = 1,
    RS_CULL_NONE     = 2,

    RS_CULL_INVALID  = 100,
} rs_cull_mode;

typedef enum {
    RS_SAMPLER_NEAREST              = 0,
    RS_SAMPLER_LINEAR               = 1,
    RS_SAMPLER_LINEAR_MIP_LINEAR    = 2,
    RS_SAMPLER_WRAP                 = 3,
    RS_SAMPLER_CLAMP                = 4,
    RS_SAMPLER_LINEAR_MIP_NEAREST   = 5,
    RS_SAMPLER_MIRRORED_REPEAT      = 6,

    RS_SAMPLER_INVALID              = 100,
} rs_sampler_value;

#endif // (defined(RS_VERSION) && (RS_VERSION >= 16))

#endif // __RS_TYPES_RSH__