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[diderot] Annotation of /branches/pure-cfg/src/include/Diderot/diderot.h
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Annotation of /branches/pure-cfg/src/include/Diderot/diderot.h

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Original Path: branches/pure-cfg/src/lib/diderot.h

1 : jhr 438 /*! \file diderot.h
2 :     *
3 :     * \author John Reppy
4 : jhr 441 *
5 :     * This is the interface to the Diderot runtime for the C target. For now,
6 :     * we are targetting single-precision computations.
7 : jhr 438 */
8 :    
9 :     /*
10 :     * COPYRIGHT (c) 2010 The Diderot Project (http://diderot-language.cs.uchicago.edu)
11 :     * All rights reserved.
12 :     */
13 :    
14 :     #ifndef _DIDEROT_H_
15 :     #define _DIDEROT_H_
16 :    
17 : jhr 440 #define STATIC_INLINE static inline
18 :    
19 : jhr 438 #include <stdint.h>
20 :     #include <stdbool.h>
21 :    
22 :     /* library-call status */
23 :     typedef enum { DIDEROT_OK = 0, DIDEROT_FAIL = -1 } Status_t;
24 :    
25 :     /* SSE vector types */
26 : jhr 441 typedef float __m128 __attribute__ ((__vector_size__ (16), __may_alias__));
27 : jhr 438 typedef float float4 __attribute__ ((__vector_size__ (16)));
28 : jhr 441 //typedef double double2 __attribute__ ((__vector_size__ (16)));
29 : jhr 438
30 :     /* union types for converting extracting vector data */
31 :     typedef union {
32 :     float f[4];
33 :     float4 v;
34 :     } f4union;
35 :    
36 :     typedef union {
37 :     double d[2];
38 :     double2 v;
39 :     } d2union;
40 :    
41 :     /* typedefs for Diderot types */
42 :     typedef int32_t Diderot_int_t;
43 :     typedef float Diderot_real_t;
44 :     typedef f4union Diderot_vec3_t; // padded to fit in SSE register
45 :     typedef f4union Diderot_vec4_t;
46 :     typedef const char *Diderot_string_t;
47 :    
48 :     typedef struct { // wrapper for 1D image data
49 :     uint32_t dim; // dimension (== 1)
50 :     uint32_t size[1];
51 :     void *data;
52 : jhr 444 Diderot_Mat2x2_t m; // image to world-space transform
53 :     Diderot_Mat2x2_t mInv; // world to image-space transform (m inverse)
54 : jhr 438 } Diderot_image1D_t;
55 :    
56 :     typedef struct { // wrapper for 2D image data
57 :     uint32_t dim; // dimension (== 2)
58 :     uint32_t size[2]; // sizes (fast to slow)
59 :     void *data;
60 : jhr 444 Diderot_Mat3x3_t m; // image to world-space transform
61 :     Diderot_Mat3x3_t mInv; // world to image-space transform (m inverse)
62 :     Diderot_Mat3x3_t mInvT; // image to world-space transform for gradients
63 :     // (m inverse transpose)
64 : jhr 438 } Diderot_image2D_t;
65 :    
66 :     typedef struct { // wrapper for 3D image data
67 :     uint32_t dim; // dimension (== 3)
68 :     uint32_t size[3]; // sizes (fast to slow)
69 :     void *data;
70 : jhr 444 Diderot_Mat4x4_t m; // image to world-space transform
71 :     Diderot_Mat4x4_t mInv; // world to image-space transform (m inverse)
72 :     Diderot_Mat4x4_t mInvT; // image to world-space transform for gradients
73 :     // (m inverse transpose)
74 : jhr 438 } Diderot_image3D_t;
75 :    
76 :     /* Diderot library functions */
77 :    
78 :     /* load image data from Nrrd files */
79 :     extern Status_t Diderot_LoadImage1D (Diderot_string_t name, Diderot_image1D_t *img);
80 :     extern Status_t Diderot_LoadImage2D (Diderot_string_t name, Diderot_image2D_t *img);
81 :     extern Status_t Diderot_LoadImage3D (Diderot_string_t name, Diderot_image3D_t *img);
82 :    
83 : jhr 439 /* functions to get input-parameter values */
84 : jhr 438 extern Status_t Diderot_InputString (const char *, const char **, bool);
85 :     extern Status_t Diderot_InputReal (const char *, Diderot_real_t *, bool);
86 :     extern Status_t Diderot_InputVec3 (const char *, Diderot_vec3_t *v);
87 :    
88 : jhr 440 /* inline vector arithmetic functions */
89 : jhr 441 STATIC_INLINE float4 Diderot_Vec3 (Diderot_real_t a, Diderot_real_t b, Diderot_real_t c)
90 : jhr 440 {
91 : jhr 441 return __extension__ (float4){ a, b, c, 0.0f };
92 : jhr 440 }
93 :    
94 : jhr 441 STATIC_INLINE float4 Diderot_Vec4 (Diderot_real_t a, Diderot_real_t b, Diderot_real_t c, Diderot_real_t d)
95 : jhr 440 {
96 : jhr 441 return __extension__ (float4){ a, b, c, d };
97 : jhr 440 }
98 :    
99 : jhr 441 STATIC_INLINE float4 Diderot_ScaleV3 (float4 dstV, Diderot_real_t s, float4 v)
100 : jhr 440 {
101 : jhr 441 return Diderot_Vec3(s, s, s) * v;
102 : jhr 440 }
103 :    
104 : jhr 441 STATIC_INLINE float4 Diderot_AddV3 (float4 a, float4 b)
105 :     {
106 :     return a + b;
107 :     }
108 :    
109 : jhr 448 STATIC_INLINE float4 Diderot_SubV3 (float4 a, float4 b)
110 :     {
111 :     return a - b;
112 :     }
113 :    
114 : jhr 441 STATIC_INLINE float4 Diderot_MulV3 (float4 a, float4 b)
115 :     {
116 : jhr 442 return a * b;
117 : jhr 441 }
118 :    
119 :     // check if pos is inside the img, assuming that we have a border of width s.
120 :     //
121 :     STATIC_INLINE bool Diderot_Inside3D (Diderot_vec3_t pos, Diderot_image3D_t *img, int s)
122 :     {
123 :     // NOTE: there might be a vectorized way to do this compare!
124 : jhr 449 // cvtps2pi -- converts vector of floats to vector of int32_t values
125 :    
126 : jhr 441 return ((s <= pos.f[0]) && (pos.f[0] < (img->size[0] - s))
127 :     && (s <= pos.f[1]) && (pos.f[1] < (img->size[1] - s))
128 :     && (s <= pos.f[2]) && (pos.f[2] < (img->size[2] - s)));
129 :     }
130 :    
131 : jhr 438 #endif /* !_DIDEROT_H_ */

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