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Diffstat (limited to 'src/pixman/pixman/pixman-private.h')
| -rw-r--r-- | src/pixman/pixman/pixman-private.h | 1153 |
1 files changed, 1153 insertions, 0 deletions
diff --git a/src/pixman/pixman/pixman-private.h b/src/pixman/pixman/pixman-private.h new file mode 100644 index 0000000..6ca13b2 --- /dev/null +++ b/src/pixman/pixman/pixman-private.h @@ -0,0 +1,1153 @@ +#include <float.h> + +#ifndef PIXMAN_PRIVATE_H +#define PIXMAN_PRIVATE_H + +/* + * The defines which are shared between C and assembly code + */ + +/* bilinear interpolation precision (must be <= 8) */ +#define BILINEAR_INTERPOLATION_BITS 7 +#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) (bits_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_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; + + /* 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 void (* pixman_iter_fini_t) (pixman_iter_t *iter); + +typedef enum +{ + ITER_NARROW = (1 << 0), + ITER_WIDE = (1 << 1), + + /* "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 << 2), + ITER_IGNORE_ALPHA = (1 << 3), + ITER_IGNORE_RGB = (1 << 4), + + /* These indicate whether the iterator is for a source + * or a destination image + */ + ITER_SRC = (1 << 5), + ITER_DEST = (1 << 6) +} 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; + pixman_iter_fini_t fini; + + /* These fields are scratch data that implementations can use */ + void * data; + uint8_t * bits; + int stride; +}; + +typedef struct pixman_iter_info_t pixman_iter_info_t; +typedef void (* pixman_iter_initializer_t) (pixman_iter_t *iter, + const pixman_iter_info_t *info); +struct pixman_iter_info_t +{ + pixman_format_code_t format; + uint32_t image_flags; + iter_flags_t iter_flags; + pixman_iter_initializer_t initializer; + pixman_iter_get_scanline_t get_scanline; + pixman_iter_write_back_t write_back; +}; + +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 +{ + float a_s, a_b; + float r_s, r_b; + float g_s, g_b; + float b_s, b_b; + pixman_fixed_t left_x; + pixman_fixed_t right_x; + + 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); + +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; + const pixman_iter_info_t * iter_info; + + pixman_blt_func_t blt; + pixman_fill_func_t fill; + + 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 +_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); + +void +_pixman_implementation_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_SSSE3 +pixman_implementation_t * +_pixman_implementation_create_ssse3 (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); + +void +_pixman_iter_init_bits_stride (pixman_iter_t *iter, const pixman_iter_info_t *info); + +/* 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_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) ? \ + 0 : (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); + +void * +pixman_malloc_ab_plus_c (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))) + +#define FLOAT_IS_ZERO(f) (-FLT_MIN < (f) && (f) < FLT_MIN) + +/* 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 + +void +_pixman_log_error (const char *function, const char *message); + +#define return_if_fail(expr) \ + do \ + { \ + if (unlikely (!(expr))) \ + { \ + _pixman_log_error (FUNC, "The expression " # expr " was false"); \ + return; \ + } \ + } \ + while (0) + +#define return_val_if_fail(expr, retval) \ + do \ + { \ + if (unlikely (!(expr))) \ + { \ + _pixman_log_error (FUNC, "The expression " # expr " was false"); \ + return (retval); \ + } \ + } \ + while (0) + +#define critical_if_fail(expr) \ + do \ + { \ + if (unlikely (!(expr))) \ + _pixman_log_error (FUNC, "The expression " # expr " was false"); \ + } \ + while (0) + +/* + * 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 */ |
