The Tor Browser: gfx/cairo/libpixman/src/pixman-private.h@6474c204b198 (annotated)

gfx/cairo/libpixman/src/pixman-private.h@6474c204b198 (annotated)

gfx/cairo/libpixman/src/pixman-private.h

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 #ifndef PIXMAN_PRIVATE_H
 #define PIXMAN_PRIVATE_H
 /*
  * The defines which are shared between C and assembly code
  */
 /* bilinear interpolation precision (must be <= 8) */
 #ifndef MOZILLA_VERSION
 #error "Need mozilla headers"
 #endif
 #ifdef MOZ_GFX_OPTIMIZE_MOBILE
 #define LOW_QUALITY_INTERPOLATION
 #define LOWER_QUALITY_INTERPOLATION
 #define BILINEAR_INTERPOLATION_BITS 4
 #else
 #define BILINEAR_INTERPOLATION_BITS 7
 #endif
 #define BILINEAR_INTERPOLATION_RANGE (1 << BILINEAR_INTERPOLATION_BITS)
 /*
  * C specific part
  */
 #ifndef __ASSEMBLER__
 #ifndef PACKAGE
 #  error config.h must be included before pixman-private.h
 #endif
 #define PIXMAN_DISABLE_DEPRECATED
 #define PIXMAN_USE_INTERNAL_API
 #include "pixman.h"
 #include <time.h>
 #include <assert.h>
 #include <stdio.h>
 #include <string.h>
 #include <stddef.h>
 #include "pixman-compiler.h"
 /*
  * Images
  */
 typedef struct image_common image_common_t;
 typedef struct solid_fill solid_fill_t;
 typedef struct gradient gradient_t;
 typedef struct linear_gradient linear_gradient_t;
 typedef struct horizontal_gradient horizontal_gradient_t;
 typedef struct vertical_gradient vertical_gradient_t;
 typedef struct conical_gradient conical_gradient_t;
 typedef struct radial_gradient radial_gradient_t;
 typedef struct bits_image bits_image_t;
 typedef struct circle circle_t;
 typedef struct argb_t argb_t;
 struct argb_t
 {
     float a;
     float r;
     float g;
     float b;
 };
 typedef void (*fetch_scanline_t) (pixman_image_t *image,
 				  int             x,
 				  int             y,
 				  int             width,
 				  uint32_t       *buffer,
 				  const uint32_t *mask);
 typedef uint32_t (*fetch_pixel_32_t) (bits_image_t *image,
 				      int           x,
 				      int           y);
 typedef argb_t (*fetch_pixel_float_t) (bits_image_t *image,
 				       int           x,
 				       int           y);
 typedef void (*store_scanline_t) (bits_image_t *  image,
 				  int             x,
 				  int             y,
 				  int             width,
 				  const uint32_t *values);
 typedef enum
 {
     BITS,
     LINEAR,
     CONICAL,
     RADIAL,
     SOLID
 } image_type_t;
 typedef void (*property_changed_func_t) (pixman_image_t *image);
 struct image_common
 {
     image_type_t                type;
     int32_t                     ref_count;
     pixman_region32_t           clip_region;
     int32_t			alpha_count;	    /* How many times this image is being used as an alpha map */
     pixman_bool_t               have_clip_region;   /* FALSE if there is no clip */
     pixman_bool_t               client_clip;        /* Whether the source clip was
 						       set by a client */
     pixman_bool_t               clip_sources;       /* Whether the clip applies when
 						     * the image is used as a source
 						     */
     pixman_bool_t		dirty;
     pixman_transform_t *        transform;
     pixman_repeat_t             repeat;
     pixman_filter_t             filter;
     pixman_fixed_t *            filter_params;
     int                         n_filter_params;
     bits_image_t *              alpha_map;
     int                         alpha_origin_x;
     int                         alpha_origin_y;
     pixman_bool_t               component_alpha;
     property_changed_func_t     property_changed;
     pixman_image_destroy_func_t destroy_func;
     void *                      destroy_data;
     uint32_t			flags;
     pixman_format_code_t	extended_format_code;
 };
 struct solid_fill
 {
     image_common_t common;
     pixman_color_t color;
     uint32_t	   color_32;
     argb_t	   color_float;
 };
 struct gradient
 {
     image_common_t	    common;
     int                     n_stops;
     pixman_gradient_stop_t *stops;
 };
 struct linear_gradient
 {
     gradient_t           common;
     pixman_point_fixed_t p1;
     pixman_point_fixed_t p2;
 };
 struct circle
 {
     pixman_fixed_t x;
     pixman_fixed_t y;
     pixman_fixed_t radius;
 };
 struct radial_gradient
 {
     gradient_t common;
     circle_t   c1;
     circle_t   c2;
     circle_t   delta;
     double     a;
     double     inva;
     double     mindr;
 };
 struct conical_gradient
 {
     gradient_t           common;
     pixman_point_fixed_t center;
     double		 angle;
 };
 struct bits_image
 {
     image_common_t             common;
     pixman_format_code_t       format;
     const pixman_indexed_t *   indexed;
     int                        width;
     int                        height;
     uint32_t *                 bits;
     uint32_t *                 free_me;
     int                        rowstride;  /* in number of uint32_t's */
     fetch_scanline_t           fetch_scanline_16;
     fetch_scanline_t           fetch_scanline_32;
     fetch_pixel_32_t	       fetch_pixel_32;
     store_scanline_t           store_scanline_32;
     fetch_scanline_t	       fetch_scanline_float;
     fetch_pixel_float_t	       fetch_pixel_float;
     store_scanline_t           store_scanline_float;
     store_scanline_t           store_scanline_16;
     /* Used for indirect access to the bits */
     pixman_read_memory_func_t  read_func;
     pixman_write_memory_func_t write_func;
 };
 union pixman_image
 {
     image_type_t       type;
     image_common_t     common;
     bits_image_t       bits;
     gradient_t         gradient;
     linear_gradient_t  linear;
     conical_gradient_t conical;
     radial_gradient_t  radial;
     solid_fill_t       solid;
 };
 typedef struct pixman_iter_t pixman_iter_t;
 typedef uint32_t *(* pixman_iter_get_scanline_t) (pixman_iter_t *iter, const uint32_t *mask);
 typedef void      (* pixman_iter_write_back_t)   (pixman_iter_t *iter);
 typedef enum
 {
     ITER_NARROW =		(1 << 0),
     /* "Localized alpha" is when the alpha channel is used only to compute
      * the alpha value of the destination. This means that the computation
      * of the RGB values of the result is independent of the alpha value.
      *
      * For example, the OVER operator has localized alpha for the
      * destination, because the RGB values of the result can be computed
      * without knowing the destination alpha. Similarly, ADD has localized
      * alpha for both source and destination because the RGB values of the
      * result can be computed without knowing the alpha value of source or
      * destination.
      *
      * When he destination is xRGB, this is useful knowledge, because then
      * we can treat it as if it were ARGB, which means in some cases we can
      * avoid copying it to a temporary buffer.
      */
     ITER_LOCALIZED_ALPHA =	(1 << 1),
     ITER_IGNORE_ALPHA =		(1 << 2),
     ITER_IGNORE_RGB =		(1 << 3),
     /* With the addition of ITER_16 we now have two flags that to represent
      * 3 pipelines. This means that there can be an invalid state when
      * both ITER_NARROW and ITER_16 are set. In this case
      * ITER_16 overrides NARROW and we should use the 16 bit pipeline.
      * Note: ITER_16 still has a 32 bit mask, which is a bit weird. */
     ITER_16 =			(1 << 4)
 } iter_flags_t;
 struct pixman_iter_t
 {
     /* These are initialized by _pixman_implementation_{src,dest}_init */
     pixman_image_t *		image;
     uint32_t *			buffer;
     int				x, y;
     int				width;
     int				height;
     iter_flags_t		iter_flags;
     uint32_t			image_flags;
     /* These function pointers are initialized by the implementation */
     pixman_iter_get_scanline_t	get_scanline;
     pixman_iter_write_back_t	write_back;
     /* These fields are scratch data that implementations can use */
     void *			data;
     uint8_t *			bits;
     int				stride;
 };
 void
 _pixman_bits_image_setup_accessors (bits_image_t *image);
 void
 _pixman_bits_image_src_iter_init (pixman_image_t *image, pixman_iter_t *iter);
 void
 _pixman_bits_image_dest_iter_init (pixman_image_t *image, pixman_iter_t *iter);
 void
 _pixman_linear_gradient_iter_init (pixman_image_t *image, pixman_iter_t  *iter);
 void
 _pixman_radial_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter);
 void
 _pixman_conical_gradient_iter_init (pixman_image_t *image, pixman_iter_t *iter);
 void
 _pixman_image_init (pixman_image_t *image);
 pixman_bool_t
 _pixman_bits_image_init (pixman_image_t *     image,
                          pixman_format_code_t format,
                          int                  width,
                          int                  height,
                          uint32_t *           bits,
                          int                  rowstride,
 			 pixman_bool_t	      clear);
 pixman_bool_t
 _pixman_image_fini (pixman_image_t *image);
 pixman_image_t *
 _pixman_image_allocate (void);
 pixman_bool_t
 _pixman_init_gradient (gradient_t *                  gradient,
                        const pixman_gradient_stop_t *stops,
                        int                           n_stops);
 void
 _pixman_image_reset_clip_region (pixman_image_t *image);
 void
 _pixman_image_validate (pixman_image_t *image);
 #define PIXMAN_IMAGE_GET_LINE(image, x, y, type, out_stride, line, mul)	\
     do									\
     {									\
 	uint32_t *__bits__;						\
 	int       __stride__;						\
         								\
 	__bits__ = image->bits.bits;					\
 	__stride__ = image->bits.rowstride;				\
 	(out_stride) =							\
 	    __stride__ * (int) sizeof (uint32_t) / (int) sizeof (type);	\
 	(line) =							\
 	    ((type *) __bits__) + (out_stride) * (y) + (mul) * (x);	\
     } while (0)
 /*
  * Gradient walker
  */
 typedef struct
 {
     uint32_t                left_ag;
     uint32_t                left_rb;
     uint32_t                right_ag;
     uint32_t                right_rb;
     pixman_fixed_t	    left_x;
     pixman_fixed_t          right_x;
     pixman_fixed_t          stepper;
     pixman_gradient_stop_t *stops;
     int                     num_stops;
     pixman_repeat_t	    repeat;
     pixman_bool_t           need_reset;
 } pixman_gradient_walker_t;
 void
 _pixman_gradient_walker_init (pixman_gradient_walker_t *walker,
                               gradient_t *              gradient,
 			      pixman_repeat_t           repeat);
 void
 _pixman_gradient_walker_reset (pixman_gradient_walker_t *walker,
                                pixman_fixed_48_16_t      pos);
 uint32_t
 _pixman_gradient_walker_pixel (pixman_gradient_walker_t *walker,
                                pixman_fixed_48_16_t      x);
 /*
  * Edges
  */
 #define MAX_ALPHA(n)    ((1 << (n)) - 1)
 #define N_Y_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n) / 2)) - 1)
 #define N_X_FRAC(n)     ((n) == 1 ? 1 : (1 << ((n) / 2)) + 1)
 #define STEP_Y_SMALL(n) (pixman_fixed_1 / N_Y_FRAC (n))
 #define STEP_Y_BIG(n)   (pixman_fixed_1 - (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
 #define Y_FRAC_FIRST(n) (STEP_Y_BIG (n) / 2)
 #define Y_FRAC_LAST(n)  (Y_FRAC_FIRST (n) + (N_Y_FRAC (n) - 1) * STEP_Y_SMALL (n))
 #define STEP_X_SMALL(n) (pixman_fixed_1 / N_X_FRAC (n))
 #define STEP_X_BIG(n)   (pixman_fixed_1 - (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
 #define X_FRAC_FIRST(n) (STEP_X_BIG (n) / 2)
 #define X_FRAC_LAST(n)  (X_FRAC_FIRST (n) + (N_X_FRAC (n) - 1) * STEP_X_SMALL (n))
 #define RENDER_SAMPLES_X(x, n)						\
     ((n) == 1? 0 : (pixman_fixed_frac (x) +				\
 		    X_FRAC_FIRST (n)) / STEP_X_SMALL (n))
 void
 pixman_rasterize_edges_accessors (pixman_image_t *image,
                                   pixman_edge_t * l,
                                   pixman_edge_t * r,
                                   pixman_fixed_t  t,
                                   pixman_fixed_t  b);
 /*
  * Implementations
  */
 typedef struct pixman_implementation_t pixman_implementation_t;
 typedef struct
 {
     pixman_op_t              op;
     pixman_image_t *         src_image;
     pixman_image_t *         mask_image;
     pixman_image_t *         dest_image;
     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;
     uint32_t                 src_flags;
     uint32_t                 mask_flags;
     uint32_t                 dest_flags;
 } pixman_composite_info_t;
 #define PIXMAN_COMPOSITE_ARGS(info)					\
     MAYBE_UNUSED pixman_op_t        op = info->op;			\
     MAYBE_UNUSED pixman_image_t *   src_image = info->src_image;	\
     MAYBE_UNUSED pixman_image_t *   mask_image = info->mask_image;	\
     MAYBE_UNUSED pixman_image_t *   dest_image = info->dest_image;	\
     MAYBE_UNUSED int32_t            src_x = info->src_x;		\
     MAYBE_UNUSED int32_t            src_y = info->src_y;		\
     MAYBE_UNUSED int32_t            mask_x = info->mask_x;		\
     MAYBE_UNUSED int32_t            mask_y = info->mask_y;		\
     MAYBE_UNUSED int32_t            dest_x = info->dest_x;		\
     MAYBE_UNUSED int32_t            dest_y = info->dest_y;		\
     MAYBE_UNUSED int32_t            width = info->width;		\
     MAYBE_UNUSED int32_t            height = info->height
 typedef void (*pixman_combine_32_func_t) (pixman_implementation_t *imp,
 					  pixman_op_t              op,
 					  uint32_t *               dest,
 					  const uint32_t *         src,
 					  const uint32_t *         mask,
 					  int                      width);
 typedef void (*pixman_combine_float_func_t) (pixman_implementation_t *imp,
 					     pixman_op_t	      op,
 					     float *		      dest,
 					     const float *	      src,
 					     const float *	      mask,
 					     int		      n_pixels);
 typedef void (*pixman_composite_func_t) (pixman_implementation_t *imp,
 					 pixman_composite_info_t *info);
 typedef pixman_bool_t (*pixman_blt_func_t) (pixman_implementation_t *imp,
 					    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);
 typedef pixman_bool_t (*pixman_fill_func_t) (pixman_implementation_t *imp,
 					     uint32_t *               bits,
 					     int                      stride,
 					     int                      bpp,
 					     int                      x,
 					     int                      y,
 					     int                      width,
 					     int                      height,
 					     uint32_t                 filler);
 typedef pixman_bool_t (*pixman_iter_init_func_t) (pixman_implementation_t *imp,
 						  pixman_iter_t           *iter);
 void _pixman_setup_combiner_functions_16 (pixman_implementation_t *imp);
 void _pixman_setup_combiner_functions_32 (pixman_implementation_t *imp);
 void _pixman_setup_combiner_functions_float (pixman_implementation_t *imp);
 typedef struct
 {
     pixman_op_t             op;
     pixman_format_code_t    src_format;
     uint32_t		    src_flags;
     pixman_format_code_t    mask_format;
     uint32_t		    mask_flags;
     pixman_format_code_t    dest_format;
     uint32_t		    dest_flags;
     pixman_composite_func_t func;
 } pixman_fast_path_t;
 struct pixman_implementation_t
 {
     pixman_implementation_t *	toplevel;
     pixman_implementation_t *	fallback;
     const pixman_fast_path_t *	fast_paths;
     pixman_blt_func_t		blt;
     pixman_fill_func_t		fill;
     pixman_iter_init_func_t     src_iter_init;
     pixman_iter_init_func_t     dest_iter_init;
     pixman_combine_32_func_t	combine_16[PIXMAN_N_OPERATORS];
     pixman_combine_32_func_t	combine_16_ca[PIXMAN_N_OPERATORS];
     pixman_combine_32_func_t	combine_32[PIXMAN_N_OPERATORS];
     pixman_combine_32_func_t	combine_32_ca[PIXMAN_N_OPERATORS];
     pixman_combine_float_func_t	combine_float[PIXMAN_N_OPERATORS];
     pixman_combine_float_func_t	combine_float_ca[PIXMAN_N_OPERATORS];
 };
 uint32_t
 _pixman_image_get_solid (pixman_implementation_t *imp,
 			 pixman_image_t *         image,
                          pixman_format_code_t     format);
 pixman_implementation_t *
 _pixman_implementation_create (pixman_implementation_t *fallback,
 			       const pixman_fast_path_t *fast_paths);
 void
 _pixman_implementation_lookup_composite (pixman_implementation_t  *toplevel,
 					 pixman_op_t               op,
 					 pixman_format_code_t      src_format,
 					 uint32_t                  src_flags,
 					 pixman_format_code_t      mask_format,
 					 uint32_t                  mask_flags,
 					 pixman_format_code_t      dest_format,
 					 uint32_t                  dest_flags,
 					 pixman_implementation_t **out_imp,
 					 pixman_composite_func_t  *out_func);
 pixman_combine_32_func_t
 _pixman_implementation_lookup_combiner (pixman_implementation_t *imp,
 					pixman_op_t		 op,
 					pixman_bool_t		 component_alpha,
 					pixman_bool_t		 wide,
 					pixman_bool_t		 rgb16);
 pixman_bool_t
 _pixman_implementation_blt (pixman_implementation_t *imp,
                             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_implementation_fill (pixman_implementation_t *imp,
                              uint32_t *               bits,
                              int                      stride,
                              int                      bpp,
                              int                      x,
                              int                      y,
                              int                      width,
                              int                      height,
                              uint32_t                 filler);
 pixman_bool_t
 _pixman_implementation_src_iter_init (pixman_implementation_t       *imp,
 				      pixman_iter_t                 *iter,
 				      pixman_image_t                *image,
 				      int                            x,
 				      int                            y,
 				      int                            width,
 				      int                            height,
 				      uint8_t                       *buffer,
 				      iter_flags_t                   flags,
 				      uint32_t                       image_flags);
 pixman_bool_t
 _pixman_implementation_dest_iter_init (pixman_implementation_t       *imp,
 				       pixman_iter_t                 *iter,
 				       pixman_image_t                *image,
 				       int                            x,
 				       int                            y,
 				       int                            width,
 				       int                            height,
 				       uint8_t                       *buffer,
 				       iter_flags_t                   flags,
 				       uint32_t                       image_flags);
 /* Specific implementations */
 pixman_implementation_t *
 _pixman_implementation_create_general (void);
 pixman_implementation_t *
 _pixman_implementation_create_fast_path (pixman_implementation_t *fallback);
 pixman_implementation_t *
 _pixman_implementation_create_noop (pixman_implementation_t *fallback);
 #if defined USE_X86_MMX || defined USE_ARM_IWMMXT || defined USE_LOONGSON_MMI
 pixman_implementation_t *
 _pixman_implementation_create_mmx (pixman_implementation_t *fallback);
 #endif
 #ifdef USE_SSE2
 pixman_implementation_t *
 _pixman_implementation_create_sse2 (pixman_implementation_t *fallback);
 #endif
 #ifdef USE_ARM_SIMD
 pixman_implementation_t *
 _pixman_implementation_create_arm_simd (pixman_implementation_t *fallback);
 #endif
 #ifdef USE_ARM_NEON
 pixman_implementation_t *
 _pixman_implementation_create_arm_neon (pixman_implementation_t *fallback);
 #endif
 #ifdef USE_MIPS_DSPR2
 pixman_implementation_t *
 _pixman_implementation_create_mips_dspr2 (pixman_implementation_t *fallback);
 #endif
 #ifdef USE_VMX
 pixman_implementation_t *
 _pixman_implementation_create_vmx (pixman_implementation_t *fallback);
 #endif
 pixman_bool_t
 _pixman_implementation_disabled (const char *name);
 pixman_implementation_t *
 _pixman_x86_get_implementations (pixman_implementation_t *imp);
 pixman_implementation_t *
 _pixman_arm_get_implementations (pixman_implementation_t *imp);
 pixman_implementation_t *
 _pixman_ppc_get_implementations (pixman_implementation_t *imp);
 pixman_implementation_t *
 _pixman_mips_get_implementations (pixman_implementation_t *imp);
 pixman_implementation_t *
 _pixman_choose_implementation (void);
 pixman_bool_t
 _pixman_disabled (const char *name);
 /*
  * Utilities
  */
 pixman_bool_t
 _pixman_compute_composite_region32 (pixman_region32_t * region,
 				    pixman_image_t *    src_image,
 				    pixman_image_t *    mask_image,
 				    pixman_image_t *    dest_image,
 				    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);
 uint32_t *
 _pixman_iter_get_scanline_noop (pixman_iter_t *iter, const uint32_t *mask);
 /* These "formats" all have depth 0, so they
  * will never clash with any real ones
  */
 #define PIXMAN_null             PIXMAN_FORMAT (0, 0, 0, 0, 0, 0)
 #define PIXMAN_solid            PIXMAN_FORMAT (0, 1, 0, 0, 0, 0)
 #define PIXMAN_pixbuf		PIXMAN_FORMAT (0, 2, 0, 0, 0, 0)
 #define PIXMAN_rpixbuf		PIXMAN_FORMAT (0, 3, 0, 0, 0, 0)
 #define PIXMAN_unknown		PIXMAN_FORMAT (0, 4, 0, 0, 0, 0)
 #define PIXMAN_any		PIXMAN_FORMAT (0, 5, 0, 0, 0, 0)
 #define PIXMAN_OP_any		(PIXMAN_N_OPERATORS + 1)
 #define FAST_PATH_ID_TRANSFORM			(1 <<  0)
 #define FAST_PATH_NO_ALPHA_MAP			(1 <<  1)
 #define FAST_PATH_NO_CONVOLUTION_FILTER		(1 <<  2)
 #define FAST_PATH_NO_PAD_REPEAT			(1 <<  3)
 #define FAST_PATH_NO_REFLECT_REPEAT		(1 <<  4)
 #define FAST_PATH_NO_ACCESSORS			(1 <<  5)
 #define FAST_PATH_NARROW_FORMAT			(1 <<  6)
 #define FAST_PATH_COMPONENT_ALPHA		(1 <<  8)
 #define FAST_PATH_SAMPLES_OPAQUE		(1 <<  7)
 #define FAST_PATH_UNIFIED_ALPHA			(1 <<  9)
 #define FAST_PATH_SCALE_TRANSFORM		(1 << 10)
 #define FAST_PATH_NEAREST_FILTER		(1 << 11)
 #define FAST_PATH_HAS_TRANSFORM			(1 << 12)
 #define FAST_PATH_IS_OPAQUE			(1 << 13)
 #define FAST_PATH_NO_NORMAL_REPEAT		(1 << 14)
 #define FAST_PATH_NO_NONE_REPEAT		(1 << 15)
 #define FAST_PATH_X_UNIT_POSITIVE		(1 << 16)
 #define FAST_PATH_AFFINE_TRANSFORM		(1 << 17)
 #define FAST_PATH_Y_UNIT_ZERO			(1 << 18)
 #define FAST_PATH_BILINEAR_FILTER		(1 << 19)
 #define FAST_PATH_ROTATE_90_TRANSFORM		(1 << 20)
 #define FAST_PATH_ROTATE_180_TRANSFORM		(1 << 21)
 #define FAST_PATH_ROTATE_270_TRANSFORM		(1 << 22)
 #define FAST_PATH_SAMPLES_COVER_CLIP_NEAREST	(1 << 23)
 #define FAST_PATH_SAMPLES_COVER_CLIP_BILINEAR	(1 << 24)
 #define FAST_PATH_BITS_IMAGE			(1 << 25)
 #define FAST_PATH_SEPARABLE_CONVOLUTION_FILTER  (1 << 26)
 #define FAST_PATH_16_FORMAT			(1 << 27)
 #define FAST_PATH_PAD_REPEAT						\
     (FAST_PATH_NO_NONE_REPEAT		|				\
      FAST_PATH_NO_NORMAL_REPEAT		|				\
      FAST_PATH_NO_REFLECT_REPEAT)
 #define FAST_PATH_NORMAL_REPEAT						\
     (FAST_PATH_NO_NONE_REPEAT		|				\
      FAST_PATH_NO_PAD_REPEAT		|				\
      FAST_PATH_NO_REFLECT_REPEAT)
 #define FAST_PATH_NONE_REPEAT						\
     (FAST_PATH_NO_NORMAL_REPEAT		|				\
      FAST_PATH_NO_PAD_REPEAT		|				\
      FAST_PATH_NO_REFLECT_REPEAT)
 #define FAST_PATH_REFLECT_REPEAT					\
     (FAST_PATH_NO_NONE_REPEAT		|				\
      FAST_PATH_NO_NORMAL_REPEAT		|				\
      FAST_PATH_NO_PAD_REPEAT)
 #define FAST_PATH_STANDARD_FLAGS					\
     (FAST_PATH_NO_CONVOLUTION_FILTER	|				\
      FAST_PATH_NO_ACCESSORS		|				\
      FAST_PATH_NO_ALPHA_MAP		|				\
      FAST_PATH_NARROW_FORMAT)
 #define FAST_PATH_STD_DEST_FLAGS					\
     (FAST_PATH_NO_ACCESSORS		|				\
      FAST_PATH_NO_ALPHA_MAP		|				\
      FAST_PATH_NARROW_FORMAT)
 #define SOURCE_FLAGS(format)						\
     (FAST_PATH_STANDARD_FLAGS |						\
      ((PIXMAN_ ## format == PIXMAN_solid) ?				\
 : (FAST_PATH_SAMPLES_COVER_CLIP_NEAREST | FAST_PATH_NEAREST_FILTER | FAST_PATH_ID_TRANSFORM)))
 #define MASK_FLAGS(format, extra)					\
     ((PIXMAN_ ## format == PIXMAN_null) ? 0 : (SOURCE_FLAGS (format) | extra))
 #define FAST_PATH(op, src, src_flags, mask, mask_flags, dest, dest_flags, func) \
     PIXMAN_OP_ ## op,							\
     PIXMAN_ ## src,							\
     src_flags,							        \
     PIXMAN_ ## mask,						        \
     mask_flags,							        \
     PIXMAN_ ## dest,	                                                \
     dest_flags,							        \
     func
 #define PIXMAN_STD_FAST_PATH(op, src, mask, dest, func)			\
     { FAST_PATH (							\
 	    op,								\
 	    src,  SOURCE_FLAGS (src),					\
 	    mask, MASK_FLAGS (mask, FAST_PATH_UNIFIED_ALPHA),		\
 	    dest, FAST_PATH_STD_DEST_FLAGS,				\
 	    func) }
 #define PIXMAN_STD_FAST_PATH_CA(op, src, mask, dest, func)		\
     { FAST_PATH (							\
 	    op,								\
 	    src,  SOURCE_FLAGS (src),					\
 	    mask, MASK_FLAGS (mask, FAST_PATH_COMPONENT_ALPHA),		\
 	    dest, FAST_PATH_STD_DEST_FLAGS,				\
 	    func) }
 extern pixman_implementation_t *global_implementation;
 static force_inline pixman_implementation_t *
 get_implementation (void)
 {
 #ifndef TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR
     if (!global_implementation)
 	global_implementation = _pixman_choose_implementation ();
 #endif
     return global_implementation;
 }
 /* This function is exported for the sake of the test suite and not part
  * of the ABI.
  */
 PIXMAN_EXPORT pixman_implementation_t *
 _pixman_internal_only_get_implementation (void);
 /* Memory allocation helpers */
 void *
 pixman_malloc_ab (unsigned int n, unsigned int b);
 void *
 pixman_malloc_abc (unsigned int a, unsigned int b, unsigned int c);
 pixman_bool_t
 _pixman_multiply_overflows_size (size_t a, size_t b);
 pixman_bool_t
 _pixman_multiply_overflows_int (unsigned int a, unsigned int b);
 pixman_bool_t
 _pixman_addition_overflows_int (unsigned int a, unsigned int b);
 /* Compositing utilities */
 void
 pixman_expand_to_float (argb_t               *dst,
 			const uint32_t       *src,
 			pixman_format_code_t  format,
 			int                   width);
 void
 pixman_contract_from_float (uint32_t     *dst,
 			    const argb_t *src,
 			    int           width);
 /* Region Helpers */
 pixman_bool_t
 pixman_region32_copy_from_region16 (pixman_region32_t *dst,
                                     pixman_region16_t *src);
 pixman_bool_t
 pixman_region16_copy_from_region32 (pixman_region16_t *dst,
                                     pixman_region32_t *src);
 /* Doubly linked lists */
 typedef struct pixman_link_t pixman_link_t;
 struct pixman_link_t
 {
     pixman_link_t *next;
     pixman_link_t *prev;
 };
 typedef struct pixman_list_t pixman_list_t;
 struct pixman_list_t
 {
     pixman_link_t *head;
     pixman_link_t *tail;
 };
 static force_inline void
 pixman_list_init (pixman_list_t *list)
 {
     list->head = (pixman_link_t *)list;
     list->tail = (pixman_link_t *)list;
 }
 static force_inline void
 pixman_list_prepend (pixman_list_t *list, pixman_link_t *link)
 {
     link->next = list->head;
     link->prev = (pixman_link_t *)list;
     list->head->prev = link;
     list->head = link;
 }
 static force_inline void
 pixman_list_unlink (pixman_link_t *link)
 {
     link->prev->next = link->next;
     link->next->prev = link->prev;
 }
 static force_inline void
 pixman_list_move_to_front (pixman_list_t *list, pixman_link_t *link)
 {
     pixman_list_unlink (link);
     pixman_list_prepend (list, link);
 }
 /* Misc macros */
 #ifndef FALSE
 #   define FALSE 0
 #endif
 #ifndef TRUE
 #   define TRUE 1
 #endif
 #ifndef MIN
 #  define MIN(a, b) ((a < b) ? a : b)
 #endif
 #ifndef MAX
 #  define MAX(a, b) ((a > b) ? a : b)
 #endif
 /* Integer division that rounds towards -infinity */
 #define DIV(a, b)					   \
     ((((a) < 0) == ((b) < 0)) ? (a) / (b) :                \
      ((a) - (b) + 1 - (((b) < 0) << 1)) / (b))
 /* Modulus that produces the remainder wrt. DIV */
 #define MOD(a, b) ((a) < 0 ? ((b) - ((-(a) - 1) % (b))) - 1 : (a) % (b))
 #define CLIP(v, low, high) ((v) < (low) ? (low) : ((v) > (high) ? (high) : (v)))
 /* Conversion between 8888 and 0565 */
 static force_inline uint16_t
 convert_8888_to_0565 (uint32_t s)
 {
     /* The following code can be compiled into just 4 instructions on ARM */
     uint32_t a, b;
     a = (s >> 3) & 0x1F001F;
     b = s & 0xFC00;
     a |= a >> 5;
     a |= b >> 5;
     return (uint16_t)a;
 }
 static force_inline uint32_t
 convert_0565_to_0888 (uint16_t s)
 {
     return (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) |
             ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) |
             ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)));
 }
 static force_inline uint32_t
 convert_0565_to_8888 (uint16_t s)
 {
     return convert_0565_to_0888 (s) | 0xff000000;
 }
 /* Trivial versions that are useful in macros */
 static force_inline uint32_t
 convert_8888_to_8888 (uint32_t s)
 {
     return s;
 }
 static force_inline uint32_t
 convert_x888_to_8888 (uint32_t s)
 {
     return s | 0xff000000;
 }
 static force_inline uint16_t
 convert_0565_to_0565 (uint16_t s)
 {
     return s;
 }
 #define PIXMAN_FORMAT_IS_WIDE(f)					\
     (PIXMAN_FORMAT_A (f) > 8 ||						\
      PIXMAN_FORMAT_R (f) > 8 ||						\
      PIXMAN_FORMAT_G (f) > 8 ||						\
      PIXMAN_FORMAT_B (f) > 8 ||						\
      PIXMAN_FORMAT_TYPE (f) == PIXMAN_TYPE_ARGB_SRGB)
 #ifdef WORDS_BIGENDIAN
 #   define SCREEN_SHIFT_LEFT(x,n)	((x) << (n))
 #   define SCREEN_SHIFT_RIGHT(x,n)	((x) >> (n))
 #else
 #   define SCREEN_SHIFT_LEFT(x,n)	((x) >> (n))
 #   define SCREEN_SHIFT_RIGHT(x,n)	((x) << (n))
 #endif
 static force_inline uint32_t
 unorm_to_unorm (uint32_t val, int from_bits, int to_bits)
 {
     uint32_t result;
     if (from_bits == 0)
 	return 0;
     /* Delete any extra bits */
     val &= ((1 << from_bits) - 1);
     if (from_bits >= to_bits)
 	return val >> (from_bits - to_bits);
     /* Start out with the high bit of val in the high bit of result. */
     result = val << (to_bits - from_bits);
     /* Copy the bits in result, doubling the number of bits each time, until
      * we fill all to_bits. Unrolled manually because from_bits and to_bits
      * are usually known statically, so the compiler can turn all of this
      * into a few shifts.
      */
 #define REPLICATE()							\
     do									\
     {									\
 	if (from_bits < to_bits)					\
 	{								\
 	    result |= result >> from_bits;				\
 									\
 	    from_bits *= 2;						\
 	}								\
     }									\
     while (0)
     REPLICATE();
     REPLICATE();
     REPLICATE();
     REPLICATE();
     REPLICATE();
     return result;
 }
 uint16_t pixman_float_to_unorm (float f, int n_bits);
 float pixman_unorm_to_float (uint16_t u, int n_bits);
 /*
  * Various debugging code
  */
 #undef DEBUG
 #define COMPILE_TIME_ASSERT(x)						\
     do { typedef int compile_time_assertion [(x)?1:-1]; } while (0)
 /* Turn on debugging depending on what type of release this is
  */
 #if (((PIXMAN_VERSION_MICRO % 2) == 0) && ((PIXMAN_VERSION_MINOR % 2) == 1))
 /* Debugging gets turned on for development releases because these
  * are the things that end up in bleeding edge distributions such
  * as Rawhide etc.
  *
  * For performance reasons we don't turn it on for stable releases or
  * random git checkouts. (Random git checkouts are often used for
  * performance work).
  */
 #    define DEBUG
 #endif
 #ifdef DEBUG
 void
 _pixman_log_error (const char *function, const char *message);
 #define return_if_fail(expr)                                            \
     do                                                                  \
     {                                                                   \
 	if (!(expr))							\
 	{								\
 	    _pixman_log_error (FUNC, "The expression " # expr " was false"); \
 	    return;							\
 	}								\
     }                                                                   \
     while (0)
 #define return_val_if_fail(expr, retval)                                \
     do                                                                  \
     {                                                                   \
 	if (!(expr))                                                    \
 	{								\
 	    _pixman_log_error (FUNC, "The expression " # expr " was false"); \
 	    return (retval);						\
 	}								\
     }                                                                   \
     while (0)
 #define critical_if_fail(expr)						\
     do									\
     {									\
 	if (!(expr))							\
 	    _pixman_log_error (FUNC, "The expression " # expr " was false"); \
     }									\
     while (0)
 #else
 #define _pixman_log_error(f,m) do { } while (0)
 #define return_if_fail(expr)						\
     do                                                                  \
     {                                                                   \
 	if (!(expr))							\
 	    return;							\
     }                                                                   \
     while (0)
 #define return_val_if_fail(expr, retval)                                \
     do                                                                  \
     {                                                                   \
 	if (!(expr))							\
 	    return (retval);						\
     }                                                                   \
     while (0)
 #define critical_if_fail(expr)						\
     do									\
     {									\
     }									\
     while (0)
 #endif
 /*
  * Matrix
  */
 typedef struct { pixman_fixed_48_16_t v[3]; } pixman_vector_48_16_t;
 pixman_bool_t
 pixman_transform_point_31_16 (const pixman_transform_t    *t,
                               const pixman_vector_48_16_t *v,
                               pixman_vector_48_16_t       *result);
 void
 pixman_transform_point_31_16_3d (const pixman_transform_t    *t,
                                  const pixman_vector_48_16_t *v,
                                  pixman_vector_48_16_t       *result);
 void
 pixman_transform_point_31_16_affine (const pixman_transform_t    *t,
                                      const pixman_vector_48_16_t *v,
                                      pixman_vector_48_16_t       *result);
 /*
  * Timers
  */
 #ifdef PIXMAN_TIMERS
 static inline uint64_t
 oil_profile_stamp_rdtsc (void)
 {
     uint32_t hi, lo;
     __asm__ __volatile__ ("rdtsc\n" : "=a" (lo), "=d" (hi));
     return lo | (((uint64_t)hi) << 32);
 }
 #define OIL_STAMP oil_profile_stamp_rdtsc
 typedef struct pixman_timer_t pixman_timer_t;
 struct pixman_timer_t
 {
     int             initialized;
     const char *    name;
     uint64_t        n_times;
     uint64_t        total;
     pixman_timer_t *next;
 };
 extern int timer_defined;
 void pixman_timer_register (pixman_timer_t *timer);
 #define TIMER_BEGIN(tname)                                              \
     {                                                                   \
 	static pixman_timer_t timer ## tname;                           \
 	uint64_t              begin ## tname;                           \
         								\
 	if (!timer ## tname.initialized)				\
 	{                                                               \
 	    timer ## tname.initialized = 1;				\
 	    timer ## tname.name = # tname;				\
 	    pixman_timer_register (&timer ## tname);			\
 	}                                                               \
 									\
 	timer ## tname.n_times++;					\
 	begin ## tname = OIL_STAMP ();
 #define TIMER_END(tname)                                                \
     timer ## tname.total += OIL_STAMP () - begin ## tname;		\
     }
 #else
 #define TIMER_BEGIN(tname)
 #define TIMER_END(tname)
 #endif /* PIXMAN_TIMERS */
 #endif /* __ASSEMBLER__ */
 #endif /* PIXMAN_PRIVATE_H */

The Tor Browser / annotate

gfx/cairo/libpixman/src/pixman-private.h@6474c204b198 (annotated)

gfx/cairo/libpixman/src/pixman-private.h