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Edit File: pixman.h

/***********************************************************

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Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
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both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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******************************************************************/
/*
 * Copyright © 1998, 2004 Keith Packard
 * Copyright   2007 Red Hat, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef PIXMAN_H__
#define PIXMAN_H__

#include <pixman-version.h>

#ifdef  __cplusplus
#define PIXMAN_BEGIN_DECLS extern "C" {
#define PIXMAN_END_DECLS }
#else
#define PIXMAN_BEGIN_DECLS
#define PIXMAN_END_DECLS
#endif

PIXMAN_BEGIN_DECLS

/*
 * Standard integers
 */

#if !defined (PIXMAN_DONT_DEFINE_STDINT)

#if defined (_SVR4) || defined (SVR4) || defined (__OpenBSD__) || defined (_sgi) || defined (__sun) || defined (sun) || defined (__digital__) || defined (__HP_cc)
#  include <inttypes.h>
/* VS 2010 (_MSC_VER 1600) has stdint.h */
#elif defined (_MSC_VER) && _MSC_VER < 1600
typedef __int8 int8_t;
typedef unsigned __int8 uint8_t;
typedef __int16 int16_t;
typedef unsigned __int16 uint16_t;
typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
#elif defined (_AIX)
#  include <sys/inttypes.h>
#else
#  include <stdint.h>
#endif

#endif

/*
 * Boolean
 */
typedef int pixman_bool_t;

/*
 * Fixpoint numbers
 */
typedef int64_t			pixman_fixed_32_32_t;
typedef pixman_fixed_32_32_t	pixman_fixed_48_16_t;
typedef uint32_t		pixman_fixed_1_31_t;
typedef uint32_t		pixman_fixed_1_16_t;
typedef int32_t			pixman_fixed_16_16_t;
typedef pixman_fixed_16_16_t	pixman_fixed_t;

#define pixman_fixed_e			((pixman_fixed_t) 1)
#define pixman_fixed_1			(pixman_int_to_fixed(1))
#define pixman_fixed_1_minus_e		(pixman_fixed_1 - pixman_fixed_e)
#define pixman_fixed_minus_1		(pixman_int_to_fixed(-1))
#define pixman_fixed_to_int(f)		((int) ((f) >> 16))
#define pixman_int_to_fixed(i)		((pixman_fixed_t) ((i) << 16))
#define pixman_fixed_to_double(f)	(double) ((f) / (double) pixman_fixed_1)
#define pixman_double_to_fixed(d)	((pixman_fixed_t) ((d) * 65536.0))
#define pixman_fixed_frac(f)		((f) & pixman_fixed_1_minus_e)
#define pixman_fixed_floor(f)		((f) & ~pixman_fixed_1_minus_e)
#define pixman_fixed_ceil(f)		pixman_fixed_floor ((f) + pixman_fixed_1_minus_e)
#define pixman_fixed_fraction(f)	((f) & pixman_fixed_1_minus_e)
#define pixman_fixed_mod_2(f)		((f) & (pixman_fixed1 | pixman_fixed_1_minus_e))
#define pixman_max_fixed_48_16		((pixman_fixed_48_16_t) 0x7fffffff)
#define pixman_min_fixed_48_16		(-((pixman_fixed_48_16_t) 1 << 31))

/*
 * Misc structs
 */
typedef struct pixman_color pixman_color_t;
typedef struct pixman_point_fixed pixman_point_fixed_t;
typedef struct pixman_line_fixed pixman_line_fixed_t;
typedef struct pixman_vector pixman_vector_t;
typedef struct pixman_transform pixman_transform_t;

struct pixman_color
{
    uint16_t	red;
    uint16_t    green;
    uint16_t    blue;
    uint16_t    alpha;
};

struct pixman_point_fixed
{
    pixman_fixed_t	x;
    pixman_fixed_t	y;
};

struct pixman_line_fixed
{
    pixman_point_fixed_t	p1, p2;
};

/*
 * Fixed point matrices
 */

struct pixman_vector
{
    pixman_fixed_t	vector[3];
};

struct pixman_transform
{
    pixman_fixed_t	matrix[3][3];
};

/* forward declaration (sorry) */
struct pixman_box16;
typedef  union pixman_image		pixman_image_t;

void          pixman_transform_init_identity    (struct pixman_transform       *matrix);
pixman_bool_t pixman_transform_point_3d         (const struct pixman_transform *transform,
						 struct pixman_vector          *vector);
pixman_bool_t pixman_transform_point            (const struct pixman_transform *transform,
						 struct pixman_vector          *vector);
pixman_bool_t pixman_transform_multiply         (struct pixman_transform       *dst,
						 const struct pixman_transform *l,
						 const struct pixman_transform *r);
void          pixman_transform_init_scale       (struct pixman_transform       *t,
						 pixman_fixed_t                 sx,
						 pixman_fixed_t                 sy);
pixman_bool_t pixman_transform_scale            (struct pixman_transform       *forward,
						 struct pixman_transform       *reverse,
						 pixman_fixed_t                 sx,
						 pixman_fixed_t                 sy);
void          pixman_transform_init_rotate      (struct pixman_transform       *t,
						 pixman_fixed_t                 cos,
						 pixman_fixed_t                 sin);
pixman_bool_t pixman_transform_rotate           (struct pixman_transform       *forward,
						 struct pixman_transform       *reverse,
						 pixman_fixed_t                 c,
						 pixman_fixed_t                 s);
void          pixman_transform_init_translate   (struct pixman_transform       *t,
						 pixman_fixed_t                 tx,
						 pixman_fixed_t                 ty);
pixman_bool_t pixman_transform_translate        (struct pixman_transform       *forward,
						 struct pixman_transform       *reverse,
						 pixman_fixed_t                 tx,
						 pixman_fixed_t                 ty);
pixman_bool_t pixman_transform_bounds           (const struct pixman_transform *matrix,
						 struct pixman_box16           *b);
pixman_bool_t pixman_transform_invert           (struct pixman_transform       *dst,
						 const struct pixman_transform *src);
pixman_bool_t pixman_transform_is_identity      (const struct pixman_transform *t);
pixman_bool_t pixman_transform_is_scale         (const struct pixman_transform *t);
pixman_bool_t pixman_transform_is_int_translate (const struct pixman_transform *t);
pixman_bool_t pixman_transform_is_inverse       (const struct pixman_transform *a,
						 const struct pixman_transform *b);

/*
 * Floating point matrices
 */
typedef struct pixman_f_transform pixman_f_transform_t;
typedef struct pixman_f_vector pixman_f_vector_t;

struct pixman_f_vector
{
    double  v[3];
};

struct pixman_f_transform
{
    double  m[3][3];
};

pixman_bool_t pixman_transform_from_pixman_f_transform (struct pixman_transform         *t,
							const struct pixman_f_transform *ft);
void          pixman_f_transform_from_pixman_transform (struct pixman_f_transform       *ft,
							const struct pixman_transform   *t);
pixman_bool_t pixman_f_transform_invert                (struct pixman_f_transform       *dst,
							const struct pixman_f_transform *src);
pixman_bool_t pixman_f_transform_point                 (const struct pixman_f_transform *t,
							struct pixman_f_vector          *v);
void          pixman_f_transform_point_3d              (const struct pixman_f_transform *t,
							struct pixman_f_vector          *v);
void          pixman_f_transform_multiply              (struct pixman_f_transform       *dst,
							const struct pixman_f_transform *l,
							const struct pixman_f_transform *r);
void          pixman_f_transform_init_scale            (struct pixman_f_transform       *t,
							double                           sx,
							double                           sy);
pixman_bool_t pixman_f_transform_scale                 (struct pixman_f_transform       *forward,
							struct pixman_f_transform       *reverse,
							double                           sx,
							double                           sy);
void          pixman_f_transform_init_rotate           (struct pixman_f_transform       *t,
							double                           cos,
							double                           sin);
pixman_bool_t pixman_f_transform_rotate                (struct pixman_f_transform       *forward,
							struct pixman_f_transform       *reverse,
							double                           c,
							double                           s);
void          pixman_f_transform_init_translate        (struct pixman_f_transform       *t,
							double                           tx,
							double                           ty);
pixman_bool_t pixman_f_transform_translate             (struct pixman_f_transform       *forward,
							struct pixman_f_transform       *reverse,
							double                           tx,
							double                           ty);
pixman_bool_t pixman_f_transform_bounds                (const struct pixman_f_transform *t,
							struct pixman_box16             *b);
void          pixman_f_transform_init_identity         (struct pixman_f_transform       *t);

typedef enum
{
    PIXMAN_REPEAT_NONE,
    PIXMAN_REPEAT_NORMAL,
    PIXMAN_REPEAT_PAD,
    PIXMAN_REPEAT_REFLECT
} pixman_repeat_t;

typedef enum
{
    PIXMAN_FILTER_FAST,
    PIXMAN_FILTER_GOOD,
    PIXMAN_FILTER_BEST,
    PIXMAN_FILTER_NEAREST,
    PIXMAN_FILTER_BILINEAR,
    PIXMAN_FILTER_CONVOLUTION,

/* The SEPARABLE_CONVOLUTION filter takes the following parameters:
     *
     *         width:           integer given as 16.16 fixpoint number
     *         height:          integer given as 16.16 fixpoint number
     *         x_phase_bits:	integer given as 16.16 fixpoint
     *         y_phase_bits:	integer given as 16.16 fixpoint
     *         xtables:         (1 << x_phase_bits) tables of size width
     *         ytables:         (1 << y_phase_bits) tables of size height
     *
     * When sampling at (x, y), the location is first rounded to one of
     * n_x_phases * n_y_phases subpixel positions. These subpixel positions
     * determine an xtable and a ytable to use.
     *
     * Conceptually a width x height matrix is then formed in which each entry
     * is the product of the corresponding entries in the x and y tables.
     * This matrix is then aligned with the image pixels such that its center
     * is as close as possible to the subpixel location chosen earlier. Then
     * the image is convolved with the matrix and the resulting pixel returned.
     */
    PIXMAN_FILTER_SEPARABLE_CONVOLUTION
} pixman_filter_t;

typedef enum
{
    PIXMAN_OP_CLEAR			= 0x00,
    PIXMAN_OP_SRC			= 0x01,
    PIXMAN_OP_DST			= 0x02,
    PIXMAN_OP_OVER			= 0x03,
    PIXMAN_OP_OVER_REVERSE		= 0x04,
    PIXMAN_OP_IN			= 0x05,
    PIXMAN_OP_IN_REVERSE		= 0x06,
    PIXMAN_OP_OUT			= 0x07,
    PIXMAN_OP_OUT_REVERSE		= 0x08,
    PIXMAN_OP_ATOP			= 0x09,
    PIXMAN_OP_ATOP_REVERSE		= 0x0a,
    PIXMAN_OP_XOR			= 0x0b,
    PIXMAN_OP_ADD			= 0x0c,
    PIXMAN_OP_SATURATE			= 0x0d,

PIXMAN_OP_DISJOINT_CLEAR		= 0x10,
    PIXMAN_OP_DISJOINT_SRC		= 0x11,
    PIXMAN_OP_DISJOINT_DST		= 0x12,
    PIXMAN_OP_DISJOINT_OVER		= 0x13,
    PIXMAN_OP_DISJOINT_OVER_REVERSE	= 0x14,
    PIXMAN_OP_DISJOINT_IN		= 0x15,
    PIXMAN_OP_DISJOINT_IN_REVERSE	= 0x16,
    PIXMAN_OP_DISJOINT_OUT		= 0x17,
    PIXMAN_OP_DISJOINT_OUT_REVERSE	= 0x18,
    PIXMAN_OP_DISJOINT_ATOP		= 0x19,
    PIXMAN_OP_DISJOINT_ATOP_REVERSE	= 0x1a,
    PIXMAN_OP_DISJOINT_XOR		= 0x1b,

PIXMAN_OP_CONJOINT_CLEAR		= 0x20,
    PIXMAN_OP_CONJOINT_SRC		= 0x21,
    PIXMAN_OP_CONJOINT_DST		= 0x22,
    PIXMAN_OP_CONJOINT_OVER		= 0x23,
    PIXMAN_OP_CONJOINT_OVER_REVERSE	= 0x24,
    PIXMAN_OP_CONJOINT_IN		= 0x25,
    PIXMAN_OP_CONJOINT_IN_REVERSE	= 0x26,
    PIXMAN_OP_CONJOINT_OUT		= 0x27,
    PIXMAN_OP_CONJOINT_OUT_REVERSE	= 0x28,
    PIXMAN_OP_CONJOINT_ATOP		= 0x29,
    PIXMAN_OP_CONJOINT_ATOP_REVERSE	= 0x2a,
    PIXMAN_OP_CONJOINT_XOR		= 0x2b,

PIXMAN_OP_MULTIPLY                  = 0x30,
    PIXMAN_OP_SCREEN                    = 0x31,
    PIXMAN_OP_OVERLAY                   = 0x32,
    PIXMAN_OP_DARKEN                    = 0x33,
    PIXMAN_OP_LIGHTEN                   = 0x34,
    PIXMAN_OP_COLOR_DODGE               = 0x35,
    PIXMAN_OP_COLOR_BURN                = 0x36,
    PIXMAN_OP_HARD_LIGHT                = 0x37,
    PIXMAN_OP_SOFT_LIGHT                = 0x38,
    PIXMAN_OP_DIFFERENCE                = 0x39,
    PIXMAN_OP_EXCLUSION                 = 0x3a,
    PIXMAN_OP_HSL_HUE			= 0x3b,
    PIXMAN_OP_HSL_SATURATION		= 0x3c,
    PIXMAN_OP_HSL_COLOR			= 0x3d,
    PIXMAN_OP_HSL_LUMINOSITY		= 0x3e

#ifdef PIXMAN_USE_INTERNAL_API
    ,
    PIXMAN_N_OPERATORS,
    PIXMAN_OP_NONE = PIXMAN_N_OPERATORS
#endif
} pixman_op_t;

/*
 * Regions
 */
typedef struct pixman_region16_data	pixman_region16_data_t;
typedef struct pixman_box16		pixman_box16_t;
typedef struct pixman_rectangle16	pixman_rectangle16_t;
typedef struct pixman_region16		pixman_region16_t;

struct pixman_region16_data {
    long		size;
    long		numRects;
/*  pixman_box16_t	rects[size];   in memory but not explicitly declared */
};

struct pixman_rectangle16
{
    int16_t	x, y;
    uint16_t	width, height;
};

struct pixman_box16
{
    int16_t x1, y1, x2, y2;
};

struct pixman_region16
{
    pixman_box16_t          extents;
    pixman_region16_data_t *data;
};

typedef enum
{
    PIXMAN_REGION_OUT,
    PIXMAN_REGION_IN,
    PIXMAN_REGION_PART
} pixman_region_overlap_t;

/* This function exists only to make it possible to preserve
 * the X ABI - it should go away at first opportunity.
 */
void pixman_region_set_static_pointers (pixman_box16_t         *empty_box,
					pixman_region16_data_t *empty_data,
					pixman_region16_data_t *broken_data);

/* creation/destruction */
void                    pixman_region_init               (pixman_region16_t *region);
void                    pixman_region_init_rect          (pixman_region16_t *region,
							  int                x,
							  int                y,
							  unsigned int       width,
							  unsigned int       height);
pixman_bool_t           pixman_region_init_rects         (pixman_region16_t *region,
							  const pixman_box16_t *boxes,
							  int                count);
void                    pixman_region_init_with_extents  (pixman_region16_t *region,
							  pixman_box16_t    *extents);
void                    pixman_region_init_from_image    (pixman_region16_t *region,
							  pixman_image_t    *image);
void                    pixman_region_fini               (pixman_region16_t *region);

/* manipulation */
void                    pixman_region_translate          (pixman_region16_t *region,
							  int                x,
							  int                y);
pixman_bool_t           pixman_region_copy               (pixman_region16_t *dest,
							  pixman_region16_t *source);
pixman_bool_t           pixman_region_intersect          (pixman_region16_t *new_reg,
							  pixman_region16_t *reg1,
							  pixman_region16_t *reg2);
pixman_bool_t           pixman_region_union              (pixman_region16_t *new_reg,
							  pixman_region16_t *reg1,
							  pixman_region16_t *reg2);
pixman_bool_t           pixman_region_union_rect         (pixman_region16_t *dest,
							  pixman_region16_t *source,
							  int                x,
							  int                y,
							  unsigned int       width,
							  unsigned int       height);
pixman_bool_t		pixman_region_intersect_rect     (pixman_region16_t *dest,
							  pixman_region16_t *source,
							  int                x,
							  int                y,
							  unsigned int       width,
							  unsigned int       height);
pixman_bool_t           pixman_region_subtract           (pixman_region16_t *reg_d,
							  pixman_region16_t *reg_m,
							  pixman_region16_t *reg_s);
pixman_bool_t           pixman_region_inverse            (pixman_region16_t *new_reg,
							  pixman_region16_t *reg1,
							  pixman_box16_t    *inv_rect);
pixman_bool_t           pixman_region_contains_point     (pixman_region16_t *region,
							  int                x,
							  int                y,
							  pixman_box16_t    *box);
pixman_region_overlap_t pixman_region_contains_rectangle (pixman_region16_t *region,
							  pixman_box16_t    *prect);
pixman_bool_t           pixman_region_not_empty          (pixman_region16_t *region);
pixman_box16_t *        pixman_region_extents            (pixman_region16_t *region);
int                     pixman_region_n_rects            (pixman_region16_t *region);
pixman_box16_t *        pixman_region_rectangles         (pixman_region16_t *region,
							  int               *n_rects);
pixman_bool_t           pixman_region_equal              (pixman_region16_t *region1,
							  pixman_region16_t *region2);
pixman_bool_t           pixman_region_selfcheck          (pixman_region16_t *region);
void                    pixman_region_reset              (pixman_region16_t *region,
							  pixman_box16_t    *box);
void			pixman_region_clear		 (pixman_region16_t *region);
/*
 * 32 bit regions
 */
typedef struct pixman_region32_data	pixman_region32_data_t;
typedef struct pixman_box32		pixman_box32_t;
typedef struct pixman_rectangle32	pixman_rectangle32_t;
typedef struct pixman_region32		pixman_region32_t;

struct pixman_region32_data {
    long		size;
    long		numRects;
/*  pixman_box32_t	rects[size];   in memory but not explicitly declared */
};

struct pixman_rectangle32
{
    int32_t x, y;
    uint32_t width, height;
};

struct pixman_box32
{
    int32_t x1, y1, x2, y2;
};

struct pixman_region32
{
    pixman_box32_t          extents;
    pixman_region32_data_t  *data;
};

/* creation/destruction */
void                    pixman_region32_init               (pixman_region32_t *region);
void                    pixman_region32_init_rect          (pixman_region32_t *region,
							    int                x,
							    int                y,
							    unsigned int       width,
							    unsigned int       height);
pixman_bool_t           pixman_region32_init_rects         (pixman_region32_t *region,
							    const pixman_box32_t *boxes,
							    int                count);
void                    pixman_region32_init_with_extents  (pixman_region32_t *region,
							    pixman_box32_t    *extents);
void                    pixman_region32_init_from_image    (pixman_region32_t *region,
							    pixman_image_t    *image);
void                    pixman_region32_fini               (pixman_region32_t *region);

/* manipulation */
void                    pixman_region32_translate          (pixman_region32_t *region,
							    int                x,
							    int                y);
pixman_bool_t           pixman_region32_copy               (pixman_region32_t *dest,
							    pixman_region32_t *source);
pixman_bool_t           pixman_region32_intersect          (pixman_region32_t *new_reg,
							    pixman_region32_t *reg1,
							    pixman_region32_t *reg2);
pixman_bool_t           pixman_region32_union              (pixman_region32_t *new_reg,
							    pixman_region32_t *reg1,
							    pixman_region32_t *reg2);
pixman_bool_t		pixman_region32_intersect_rect     (pixman_region32_t *dest,
							    pixman_region32_t *source,
							    int                x,
							    int                y,
							    unsigned int       width,
							    unsigned int       height);
pixman_bool_t           pixman_region32_union_rect         (pixman_region32_t *dest,
							    pixman_region32_t *source,
							    int                x,
							    int                y,
							    unsigned int       width,
							    unsigned int       height);
pixman_bool_t           pixman_region32_subtract           (pixman_region32_t *reg_d,
							    pixman_region32_t *reg_m,
							    pixman_region32_t *reg_s);
pixman_bool_t           pixman_region32_inverse            (pixman_region32_t *new_reg,
							    pixman_region32_t *reg1,
							    pixman_box32_t    *inv_rect);
pixman_bool_t           pixman_region32_contains_point     (pixman_region32_t *region,
							    int                x,
							    int                y,
							    pixman_box32_t    *box);
pixman_region_overlap_t pixman_region32_contains_rectangle (pixman_region32_t *region,
							    pixman_box32_t    *prect);
pixman_bool_t           pixman_region32_not_empty          (pixman_region32_t *region);
pixman_box32_t *        pixman_region32_extents            (pixman_region32_t *region);
int                     pixman_region32_n_rects            (pixman_region32_t *region);
pixman_box32_t *        pixman_region32_rectangles         (pixman_region32_t *region,
							    int               *n_rects);
pixman_bool_t           pixman_region32_equal              (pixman_region32_t *region1,
							    pixman_region32_t *region2);
pixman_bool_t           pixman_region32_selfcheck          (pixman_region32_t *region);
void                    pixman_region32_reset              (pixman_region32_t *region,
							    pixman_box32_t    *box);
void			pixman_region32_clear		   (pixman_region32_t *region);

/* Copy / Fill / Misc */
pixman_bool_t pixman_blt                (uint32_t           *src_bits,
					 uint32_t           *dst_bits,
					 int                 src_stride,
					 int                 dst_stride,
					 int                 src_bpp,
					 int                 dst_bpp,
					 int                 src_x,
					 int                 src_y,
					 int                 dest_x,
					 int                 dest_y,
					 int                 width,
					 int                 height);
pixman_bool_t pixman_fill               (uint32_t           *bits,
					 int                 stride,
					 int                 bpp,
					 int                 x,
					 int                 y,
					 int                 width,
					 int                 height,
					 uint32_t            _xor);

int           pixman_version            (void);
const char*   pixman_version_string     (void);

/*
 * Images
 */
typedef struct pixman_indexed		pixman_indexed_t;
typedef struct pixman_gradient_stop	pixman_gradient_stop_t;

typedef uint32_t (* pixman_read_memory_func_t) (const void *src, int size);
typedef void     (* pixman_write_memory_func_t) (void *dst, uint32_t value, int size);

typedef void     (* pixman_image_destroy_func_t) (pixman_image_t *image, void *data);

struct pixman_gradient_stop {
    pixman_fixed_t x;
    pixman_color_t color;
};

#define PIXMAN_MAX_INDEXED  256 /* XXX depth must be <= 8 */

#if PIXMAN_MAX_INDEXED <= 256
typedef uint8_t pixman_index_type;
#endif

struct pixman_indexed
{
    pixman_bool_t       color;
    uint32_t		rgba[PIXMAN_MAX_INDEXED];
    pixman_index_type	ent[32768];
};

/*
 * While the protocol is generous in format support, the
 * sample implementation allows only packed RGB and GBR
 * representations for data to simplify software rendering,
 */
#define PIXMAN_FORMAT(bpp,type,a,r,g,b)	(((bpp) << 24) |  \
					 ((type) << 16) | \
					 ((a) << 12) |	  \
					 ((r) << 8) |	  \
					 ((g) << 4) |	  \
					 ((b)))

#define PIXMAN_FORMAT_BYTE(bpp,type,a,r,g,b) \
	(((bpp >> 3) << 24) | \
	(3 << 22) | ((type) << 16) | \
	((a >> 3) << 12) | \
	((r >> 3) << 8) | \
	((g >> 3) << 4) | \
	((b >> 3)))

#define PIXMAN_FORMAT_RESHIFT(val, ofs, num) \
	(((val >> (ofs)) & ((1 << (num)) - 1)) << ((val >> 22) & 3))

#define PIXMAN_FORMAT_BPP(f)	PIXMAN_FORMAT_RESHIFT(f, 24, 8)
#define PIXMAN_FORMAT_SHIFT(f)	((uint32_t)((f >> 22) & 3))
#define PIXMAN_FORMAT_TYPE(f)	(((f) >> 16) & 0x3f)
#define PIXMAN_FORMAT_A(f)	PIXMAN_FORMAT_RESHIFT(f, 12, 4)
#define PIXMAN_FORMAT_R(f)	PIXMAN_FORMAT_RESHIFT(f, 8, 4)
#define PIXMAN_FORMAT_G(f)	PIXMAN_FORMAT_RESHIFT(f, 4, 4)
#define PIXMAN_FORMAT_B(f)	PIXMAN_FORMAT_RESHIFT(f, 0, 4)
#define PIXMAN_FORMAT_RGB(f)	(((f)      ) & 0xfff)
#define PIXMAN_FORMAT_VIS(f)	(((f)      ) & 0xffff)
#define PIXMAN_FORMAT_DEPTH(f)	(PIXMAN_FORMAT_A(f) +	\
				 PIXMAN_FORMAT_R(f) +	\
				 PIXMAN_FORMAT_G(f) +	\
				 PIXMAN_FORMAT_B(f))

#define PIXMAN_TYPE_OTHER	0
#define PIXMAN_TYPE_A		1
#define PIXMAN_TYPE_ARGB	2
#define PIXMAN_TYPE_ABGR	3
#define PIXMAN_TYPE_COLOR	4
#define PIXMAN_TYPE_GRAY	5
#define PIXMAN_TYPE_YUY2	6
#define PIXMAN_TYPE_YV12	7
#define PIXMAN_TYPE_BGRA	8
#define PIXMAN_TYPE_RGBA	9
#define PIXMAN_TYPE_ARGB_SRGB	10
#define PIXMAN_TYPE_RGBA_FLOAT	11

#define PIXMAN_FORMAT_COLOR(f)				\
	(PIXMAN_FORMAT_TYPE(f) == PIXMAN_TYPE_ARGB ||	\
	 PIXMAN_FORMAT_TYPE(f) == PIXMAN_TYPE_ABGR ||	\
	 PIXMAN_FORMAT_TYPE(f) == PIXMAN_TYPE_BGRA ||	\
	 PIXMAN_FORMAT_TYPE(f) == PIXMAN_TYPE_RGBA ||	\
	 PIXMAN_FORMAT_TYPE(f) == PIXMAN_TYPE_RGBA_FLOAT)

typedef enum {
/* 128bpp formats */
    PIXMAN_rgba_float =	PIXMAN_FORMAT_BYTE(128,PIXMAN_TYPE_RGBA_FLOAT,32,32,32,32),
/* 96bpp formats */
    PIXMAN_rgb_float =	PIXMAN_FORMAT_BYTE(96,PIXMAN_TYPE_RGBA_FLOAT,0,32,32,32),

/* 32bpp formats */
    PIXMAN_a8r8g8b8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,8,8,8,8),
    PIXMAN_x8r8g8b8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,0,8,8,8),
    PIXMAN_a8b8g8r8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,8,8,8,8),
    PIXMAN_x8b8g8r8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,0,8,8,8),
    PIXMAN_b8g8r8a8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_BGRA,8,8,8,8),
    PIXMAN_b8g8r8x8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_BGRA,0,8,8,8),
    PIXMAN_r8g8b8a8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_RGBA,8,8,8,8),
    PIXMAN_r8g8b8x8 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_RGBA,0,8,8,8),
    PIXMAN_x14r6g6b6 =	 PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,0,6,6,6),
    PIXMAN_x2r10g10b10 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,0,10,10,10),
    PIXMAN_a2r10g10b10 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,2,10,10,10),
    PIXMAN_x2b10g10r10 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,0,10,10,10),
    PIXMAN_a2b10g10r10 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,2,10,10,10),

/* sRGB formats */
    PIXMAN_a8r8g8b8_sRGB = PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB_SRGB,8,8,8,8),

/* 24bpp formats */
    PIXMAN_r8g8b8 =	 PIXMAN_FORMAT(24,PIXMAN_TYPE_ARGB,0,8,8,8),
    PIXMAN_b8g8r8 =	 PIXMAN_FORMAT(24,PIXMAN_TYPE_ABGR,0,8,8,8),

/* 16bpp formats */
    PIXMAN_r5g6b5 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,5,6,5),
    PIXMAN_b5g6r5 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,0,5,6,5),

PIXMAN_a1r5g5b5 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,1,5,5,5),
    PIXMAN_x1r5g5b5 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,5,5,5),
    PIXMAN_a1b5g5r5 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,1,5,5,5),
    PIXMAN_x1b5g5r5 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,0,5,5,5),
    PIXMAN_a4r4g4b4 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,4,4,4,4),
    PIXMAN_x4r4g4b4 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,4,4,4),
    PIXMAN_a4b4g4r4 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,4,4,4,4),
    PIXMAN_x4b4g4r4 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_ABGR,0,4,4,4),

/* 8bpp formats */
    PIXMAN_a8 =		 PIXMAN_FORMAT(8,PIXMAN_TYPE_A,8,0,0,0),
    PIXMAN_r3g3b2 =	 PIXMAN_FORMAT(8,PIXMAN_TYPE_ARGB,0,3,3,2),
    PIXMAN_b2g3r3 =	 PIXMAN_FORMAT(8,PIXMAN_TYPE_ABGR,0,3,3,2),
    PIXMAN_a2r2g2b2 =	 PIXMAN_FORMAT(8,PIXMAN_TYPE_ARGB,2,2,2,2),
    PIXMAN_a2b2g2r2 =	 PIXMAN_FORMAT(8,PIXMAN_TYPE_ABGR,2,2,2,2),

PIXMAN_c8 =		 PIXMAN_FORMAT(8,PIXMAN_TYPE_COLOR,0,0,0,0),
    PIXMAN_g8 =		 PIXMAN_FORMAT(8,PIXMAN_TYPE_GRAY,0,0,0,0),

PIXMAN_x4a4 =	 PIXMAN_FORMAT(8,PIXMAN_TYPE_A,4,0,0,0),

PIXMAN_x4c4 =	 PIXMAN_FORMAT(8,PIXMAN_TYPE_COLOR,0,0,0,0),
    PIXMAN_x4g4 =	 PIXMAN_FORMAT(8,PIXMAN_TYPE_GRAY,0,0,0,0),

/* 4bpp formats */
    PIXMAN_a4 =		 PIXMAN_FORMAT(4,PIXMAN_TYPE_A,4,0,0,0),
    PIXMAN_r1g2b1 =	 PIXMAN_FORMAT(4,PIXMAN_TYPE_ARGB,0,1,2,1),
    PIXMAN_b1g2r1 =	 PIXMAN_FORMAT(4,PIXMAN_TYPE_ABGR,0,1,2,1),
    PIXMAN_a1r1g1b1 =	 PIXMAN_FORMAT(4,PIXMAN_TYPE_ARGB,1,1,1,1),
    PIXMAN_a1b1g1r1 =	 PIXMAN_FORMAT(4,PIXMAN_TYPE_ABGR,1,1,1,1),

PIXMAN_c4 =		 PIXMAN_FORMAT(4,PIXMAN_TYPE_COLOR,0,0,0,0),
    PIXMAN_g4 =		 PIXMAN_FORMAT(4,PIXMAN_TYPE_GRAY,0,0,0,0),

/* 1bpp formats */
    PIXMAN_a1 =		 PIXMAN_FORMAT(1,PIXMAN_TYPE_A,1,0,0,0),

PIXMAN_g1 =		 PIXMAN_FORMAT(1,PIXMAN_TYPE_GRAY,0,0,0,0),

/* YUV formats */
    PIXMAN_yuy2 =	 PIXMAN_FORMAT(16,PIXMAN_TYPE_YUY2,0,0,0,0),
    PIXMAN_yv12 =	 PIXMAN_FORMAT(12,PIXMAN_TYPE_YV12,0,0,0,0)
} pixman_format_code_t;

/* Querying supported format values. */
pixman_bool_t pixman_format_supported_destination (pixman_format_code_t format);
pixman_bool_t pixman_format_supported_source      (pixman_format_code_t format);

/* Constructors */
pixman_image_t *pixman_image_create_solid_fill       (const pixman_color_t         *color);
pixman_image_t *pixman_image_create_linear_gradient  (const pixman_point_fixed_t   *p1,
						      const pixman_point_fixed_t   *p2,
						      const pixman_gradient_stop_t *stops,
						      int                           n_stops);
pixman_image_t *pixman_image_create_radial_gradient  (const pixman_point_fixed_t   *inner,
						      const pixman_point_fixed_t   *outer,
						      pixman_fixed_t                inner_radius,
						      pixman_fixed_t                outer_radius,
						      const pixman_gradient_stop_t *stops,
						      int                           n_stops);
pixman_image_t *pixman_image_create_conical_gradient (const pixman_point_fixed_t   *center,
						      pixman_fixed_t                angle,
						      const pixman_gradient_stop_t *stops,
						      int                           n_stops);
pixman_image_t *pixman_image_create_bits             (pixman_format_code_t          format,
						      int                           width,
						      int                           height,
						      uint32_t                     *bits,
						      int                           rowstride_bytes);
pixman_image_t *pixman_image_create_bits_no_clear    (pixman_format_code_t format,
						      int                  width,
						      int                  height,
						      uint32_t *           bits,
						      int                  rowstride_bytes);

/* Destructor */
pixman_image_t *pixman_image_ref                     (pixman_image_t               *image);
pixman_bool_t   pixman_image_unref                   (pixman_image_t               *image);

void		pixman_image_set_destroy_function    (pixman_image_t		   *image,
						      pixman_image_destroy_func_t   function,
						      void			   *data);
void *		pixman_image_get_destroy_data        (pixman_image_t		   *image);

/* Set properties */
pixman_bool_t   pixman_image_set_clip_region         (pixman_image_t               *image,
						      pixman_region16_t            *region);
pixman_bool_t   pixman_image_set_clip_region32       (pixman_image_t               *image,
						      pixman_region32_t            *region);
void		pixman_image_set_has_client_clip     (pixman_image_t               *image,
						      pixman_bool_t		    clien_clip);
pixman_bool_t   pixman_image_set_transform           (pixman_image_t               *image,
						      const pixman_transform_t     *transform);
void            pixman_image_set_repeat              (pixman_image_t               *image,
						      pixman_repeat_t               repeat);
pixman_bool_t   pixman_image_set_filter              (pixman_image_t               *image,
						      pixman_filter_t               filter,
						      const pixman_fixed_t         *filter_params,
						      int                           n_filter_params);
void		pixman_image_set_source_clipping     (pixman_image_t		   *image,
						      pixman_bool_t                 source_clipping);
void            pixman_image_set_alpha_map           (pixman_image_t               *image,
						      pixman_image_t               *alpha_map,
						      int16_t                       x,
						      int16_t                       y);
void            pixman_image_set_component_alpha     (pixman_image_t               *image,
						      pixman_bool_t                 component_alpha);
pixman_bool_t   pixman_image_get_component_alpha     (pixman_image_t               *image);
void		pixman_image_set_accessors	     (pixman_image_t		   *image,
						      pixman_read_memory_func_t	    read_func,
						      pixman_write_memory_func_t    write_func);
void		pixman_image_set_indexed	     (pixman_image_t		   *image,
						      const pixman_indexed_t	   *indexed);
uint32_t       *pixman_image_get_data                (pixman_image_t               *image);
int		pixman_image_get_width               (pixman_image_t               *image);
int             pixman_image_get_height              (pixman_image_t               *image);
int		pixman_image_get_stride              (pixman_image_t               *image); /* in bytes */
int		pixman_image_get_depth               (pixman_image_t		   *image);
pixman_format_code_t pixman_image_get_format	     (pixman_image_t		   *image);

typedef enum
{
    PIXMAN_KERNEL_IMPULSE,
    PIXMAN_KERNEL_BOX,
    PIXMAN_KERNEL_LINEAR,
    PIXMAN_KERNEL_CUBIC,
    PIXMAN_KERNEL_GAUSSIAN,
    PIXMAN_KERNEL_LANCZOS2,
    PIXMAN_KERNEL_LANCZOS3,
    PIXMAN_KERNEL_LANCZOS3_STRETCHED       /* Jim Blinn's 'nice' filter */
} pixman_kernel_t;

/* Create the parameter list for a SEPARABLE_CONVOLUTION filter
 * with the given kernels and scale parameters.
 */
pixman_fixed_t *
pixman_filter_create_separable_convolution (int             *n_values,
					    pixman_fixed_t   scale_x,
					    pixman_fixed_t   scale_y,
					    pixman_kernel_t  reconstruct_x,
					    pixman_kernel_t  reconstruct_y,
					    pixman_kernel_t  sample_x,
					    pixman_kernel_t  sample_y,
					    int              subsample_bits_x,
					    int              subsample_bits_y);

pixman_bool_t	pixman_image_fill_rectangles	     (pixman_op_t		    op,
						      pixman_image_t		   *image,
						      const pixman_color_t	   *color,
						      int			    n_rects,
						      const pixman_rectangle16_t   *rects);
pixman_bool_t   pixman_image_fill_boxes              (pixman_op_t                   op,
                                                      pixman_image_t               *dest,
                                                      const pixman_color_t         *color,
                                                      int                           n_boxes,
                                                      const pixman_box32_t         *boxes);

/* Composite */
pixman_bool_t pixman_compute_composite_region (pixman_region16_t *region,
					       pixman_image_t    *src_image,
					       pixman_image_t    *mask_image,
					       pixman_image_t    *dest_image,
					       int16_t            src_x,
					       int16_t            src_y,
					       int16_t            mask_x,
					       int16_t            mask_y,
					       int16_t            dest_x,
					       int16_t            dest_y,
					       uint16_t           width,
					       uint16_t           height);
void          pixman_image_composite          (pixman_op_t        op,
					       pixman_image_t    *src,
					       pixman_image_t    *mask,
					       pixman_image_t    *dest,
					       int16_t            src_x,
					       int16_t            src_y,
					       int16_t            mask_x,
					       int16_t            mask_y,
					       int16_t            dest_x,
					       int16_t            dest_y,
					       uint16_t           width,
					       uint16_t           height);
void          pixman_image_composite32        (pixman_op_t        op,
					       pixman_image_t    *src,
					       pixman_image_t    *mask,
					       pixman_image_t    *dest,
					       int32_t            src_x,
					       int32_t            src_y,
					       int32_t            mask_x,
					       int32_t            mask_y,
					       int32_t            dest_x,
					       int32_t            dest_y,
					       int32_t            width,
					       int32_t            height);

/* Executive Summary: This function is a no-op that only exists
 * for historical reasons.
 *
 * There used to be a bug in the X server where it would rely on
 * out-of-bounds accesses when it was asked to composite with a
 * window as the source. It would create a pixman image pointing
 * to some bogus position in memory, but then set a clip region
 * to the position where the actual bits were.
 *
 * Due to a bug in old versions of pixman, where it would not clip
 * against the image bounds when a clip region was set, this would
 * actually work. So when the pixman bug was fixed, a workaround was
 * added to allow certain out-of-bound accesses. This function disabled
 * those workarounds.
 *
 * Since 0.21.2, pixman doesn't do these workarounds anymore, so now this
 * function is a no-op.
 */
void pixman_disable_out_of_bounds_workaround (void);

/*
 * Glyphs
 */
typedef struct pixman_glyph_cache_t pixman_glyph_cache_t;
typedef struct
{
    int		x, y;
    const void *glyph;
} pixman_glyph_t;

pixman_glyph_cache_t *pixman_glyph_cache_create       (void);
void                  pixman_glyph_cache_destroy      (pixman_glyph_cache_t *cache);
void                  pixman_glyph_cache_freeze       (pixman_glyph_cache_t *cache);
void                  pixman_glyph_cache_thaw         (pixman_glyph_cache_t *cache);
const void *          pixman_glyph_cache_lookup       (pixman_glyph_cache_t *cache,
						       void                 *font_key,
						       void                 *glyph_key);
const void *          pixman_glyph_cache_insert       (pixman_glyph_cache_t *cache,
						       void                 *font_key,
						       void                 *glyph_key,
						       int		     origin_x,
						       int                   origin_y,
						       pixman_image_t       *glyph_image);
void                  pixman_glyph_cache_remove       (pixman_glyph_cache_t *cache,
						       void                 *font_key,
						       void                 *glyph_key);
void                  pixman_glyph_get_extents        (pixman_glyph_cache_t *cache,
						       int                   n_glyphs,
						       pixman_glyph_t       *glyphs,
						       pixman_box32_t       *extents);
pixman_format_code_t  pixman_glyph_get_mask_format    (pixman_glyph_cache_t *cache,
						       int		     n_glyphs,
						       const pixman_glyph_t *glyphs);
void                  pixman_composite_glyphs         (pixman_op_t           op,
						       pixman_image_t       *src,
						       pixman_image_t       *dest,
						       pixman_format_code_t  mask_format,
						       int32_t               src_x,
						       int32_t               src_y,
						       int32_t		     mask_x,
						       int32_t		     mask_y,
						       int32_t               dest_x,
						       int32_t               dest_y,
						       int32_t		     width,
						       int32_t		     height,
						       pixman_glyph_cache_t *cache,
						       int		     n_glyphs,
						       const pixman_glyph_t *glyphs);
void                  pixman_composite_glyphs_no_mask (pixman_op_t           op,
						       pixman_image_t       *src,
						       pixman_image_t       *dest,
						       int32_t               src_x,
						       int32_t               src_y,
						       int32_t               dest_x,
						       int32_t               dest_y,
						       pixman_glyph_cache_t *cache,
						       int		     n_glyphs,
						       const pixman_glyph_t *glyphs);

/*
 * Trapezoids
 */
typedef struct pixman_edge pixman_edge_t;
typedef struct pixman_trapezoid pixman_trapezoid_t;
typedef struct pixman_trap pixman_trap_t;
typedef struct pixman_span_fix pixman_span_fix_t;
typedef struct pixman_triangle pixman_triangle_t;

/*
 * An edge structure.  This represents a single polygon edge
 * and can be quickly stepped across small or large gaps in the
 * sample grid
 */
struct pixman_edge
{
    pixman_fixed_t	x;
    pixman_fixed_t	e;
    pixman_fixed_t	stepx;
    pixman_fixed_t	signdx;
    pixman_fixed_t	dy;
    pixman_fixed_t	dx;

pixman_fixed_t	stepx_small;
    pixman_fixed_t	stepx_big;
    pixman_fixed_t	dx_small;
    pixman_fixed_t	dx_big;
};

struct pixman_trapezoid
{
    pixman_fixed_t	top, bottom;
    pixman_line_fixed_t	left, right;
};

struct pixman_triangle
{
    pixman_point_fixed_t p1, p2, p3;
};

/* whether 't' is a well defined not obviously empty trapezoid */
#define pixman_trapezoid_valid(t)				   \
    ((t)->left.p1.y != (t)->left.p2.y &&			   \
     (t)->right.p1.y != (t)->right.p2.y &&			   \
     ((t)->bottom > (t)->top))

struct pixman_span_fix
{
    pixman_fixed_t	l, r, y;
};

struct pixman_trap
{
    pixman_span_fix_t	top, bot;
};

pixman_fixed_t pixman_sample_ceil_y        (pixman_fixed_t             y,
					    int                        bpp);
pixman_fixed_t pixman_sample_floor_y       (pixman_fixed_t             y,
					    int                        bpp);
void           pixman_edge_step            (pixman_edge_t             *e,
					    int                        n);
void           pixman_edge_init            (pixman_edge_t             *e,
					    int                        bpp,
					    pixman_fixed_t             y_start,
					    pixman_fixed_t             x_top,
					    pixman_fixed_t             y_top,
					    pixman_fixed_t             x_bot,
					    pixman_fixed_t             y_bot);
void           pixman_line_fixed_edge_init (pixman_edge_t             *e,
					    int                        bpp,
					    pixman_fixed_t             y,
					    const pixman_line_fixed_t *line,
					    int                        x_off,
					    int                        y_off);
void           pixman_rasterize_edges      (pixman_image_t            *image,
					    pixman_edge_t             *l,
					    pixman_edge_t             *r,
					    pixman_fixed_t             t,
					    pixman_fixed_t             b);
void           pixman_add_traps            (pixman_image_t            *image,
					    int16_t                    x_off,
					    int16_t                    y_off,
					    int                        ntrap,
					    const pixman_trap_t       *traps);
void           pixman_add_trapezoids       (pixman_image_t            *image,
					    int16_t                    x_off,
					    int                        y_off,
					    int                        ntraps,
					    const pixman_trapezoid_t  *traps);
void           pixman_rasterize_trapezoid  (pixman_image_t            *image,
					    const pixman_trapezoid_t  *trap,
					    int                        x_off,
					    int                        y_off);
void          pixman_composite_trapezoids (pixman_op_t		       op,
					   pixman_image_t *	       src,
					   pixman_image_t *	       dst,
					   pixman_format_code_t	       mask_format,
					   int			       x_src,
					   int			       y_src,
					   int			       x_dst,
					   int			       y_dst,
					   int			       n_traps,
					   const pixman_trapezoid_t *  traps);
void          pixman_composite_triangles (pixman_op_t		       op,
					  pixman_image_t *	       src,
					  pixman_image_t *	       dst,
					  pixman_format_code_t	       mask_format,
					  int			       x_src,
					  int			       y_src,
					  int			       x_dst,
					  int			       y_dst,
					  int			       n_tris,
					  const pixman_triangle_t *    tris);
void	      pixman_add_triangles       (pixman_image_t              *image,
					  int32_t	               x_off,
					  int32_t	               y_off,
					  int	                       n_tris,
					  const pixman_triangle_t     *tris);

PIXMAN_END_DECLS

#endif /* PIXMAN_H__ */