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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can
* be found in the LICENSE file.
*
*/
#ifndef SKC_ONCE_SKC
#define SKC_ONCE_SKC
//
//
//
#include "skc_err.h"
#include "skc_types.h"
#include "skc_styling.h"
//
// CONTEXT
//
skc_err
skc_context_retain(skc_context_t context);
skc_err
skc_context_release(skc_context_t context);
skc_err
skc_context_reset(skc_context_t context);
//
// PATH BUILDER
//
skc_err
skc_path_builder_create(skc_context_t context, skc_path_builder_t * path_builder);
skc_err
skc_path_builder_retain(skc_path_builder_t path_builder);
skc_err
skc_path_builder_release(skc_path_builder_t path_builder);
//
// PATH OPS
//
skc_err
skc_path_begin(skc_path_builder_t path_builder);
skc_err
skc_path_end(skc_path_builder_t path_builder, skc_path_t * path);
skc_err
skc_path_retain(skc_context_t context, skc_path_t const * paths, uint32_t count);
skc_err
skc_path_release(skc_context_t context, skc_path_t const * paths, uint32_t count);
skc_err
skc_path_flush(skc_context_t context, skc_path_t const * paths, uint32_t count);
//
// PATH SEGMENT OPS
//
//
// FIXME -- we need a bulk/vectorized path segment operation
//
skc_err
skc_path_move_to(skc_path_builder_t path_builder,
float x0, float y0);
skc_err
skc_path_close(skc_path_builder_t path_builder);
skc_err
skc_path_line_to(skc_path_builder_t path_builder,
float x1, float y1);
skc_err
skc_path_cubic_to(skc_path_builder_t path_builder,
float x1, float y1,
float x2, float y2,
float x3, float y3);
skc_err
skc_path_cubic_smooth_to(skc_path_builder_t path_builder,
float x2, float y2,
float x3, float y3);
skc_err
skc_path_quad_to(skc_path_builder_t path_builder,
float x1, float y1,
float x2, float y2);
skc_err
skc_path_quad_smooth_to(skc_path_builder_t path_builder,
float x2, float y2);
skc_err
skc_path_ellipse(skc_path_builder_t path_builder,
float cx, float cy,
float rx, float ry);
//
// RASTER BUILDER
//
skc_err
skc_raster_builder_create(skc_context_t context, skc_raster_builder_t * raster_builder);
skc_err
skc_raster_builder_retain(skc_raster_builder_t raster_builder);
skc_err
skc_raster_builder_release(skc_raster_builder_t raster_builder);
//
// RASTER OPS
//
skc_err
skc_raster_begin(skc_raster_builder_t raster_builder);
skc_err
skc_raster_end(skc_raster_builder_t raster_builder, skc_raster_t * raster);
skc_err
skc_raster_retain(skc_context_t context, skc_raster_t const * rasters, uint32_t count);
skc_err
skc_raster_release(skc_context_t context, skc_raster_t const * rasters, uint32_t count);
skc_err
skc_raster_flush(skc_context_t context, skc_raster_t const * rasters, uint32_t count);
//
// PATH-TO-RASTER OPS
//
//
// FIXME -- do we need a bulk/vectorized "add filled" function?
//
skc_err
skc_raster_add_filled(skc_raster_builder_t raster_builder,
skc_path_t path,
skc_transform_weakref_t * transform_weakref,
float const * transform,
skc_raster_clip_weakref_t * raster_clip_weakref,
float const * raster_clip);
//
// COMPOSITION STATE
//
skc_err
skc_composition_create(skc_context_t context, skc_composition_t * composition);
skc_err
skc_composition_retain(skc_composition_t composition);
skc_err
skc_composition_release(skc_composition_t composition);
skc_err
skc_composition_place(skc_composition_t composition,
skc_raster_t const * rasters,
skc_layer_id const * layer_ids,
float const * txs,
float const * tys,
uint32_t count); // NOTE: A PER-PLACE CLIP IS POSSIBLE
skc_err
skc_composition_seal(skc_composition_t composition);
skc_err
skc_composition_unseal(skc_composition_t composition, bool reset);
skc_err
skc_composition_get_bounds(skc_composition_t composition, int32_t bounds[4]);
#if 0
// let's switch to a per place bounds using weakrefs -- clip 0 will be largest clip
skc_err
skc_composition_set_clip(skc_composition_t composition, int32_t const clip[4]);
#endif
//
// TODO: COMPOSITION "SET ALGEBRA" OPERATIONS
//
// Produce a new composition from the union or intersection of two
// existing compositions
//
//
// TODO: COMPOSITION "HIT DETECTION"
//
// Report which layers and tiles are intersected by one or more
// device-space (x,y) points
//
//
// STYLING STATE
//
skc_err
skc_styling_create(skc_context_t context,
skc_styling_t * styling,
uint32_t layers_count,
uint32_t groups_count,
uint32_t extras_count);
skc_err
skc_styling_retain(skc_styling_t styling);
skc_err
skc_styling_release(skc_styling_t styling);
skc_err
skc_styling_seal(skc_styling_t styling);
skc_err
skc_styling_unseal(skc_styling_t styling); // FIXME
skc_err
skc_styling_reset(skc_styling_t styling); // FIXME -- make unseal reset
//
// STYLING GROUPS AND LAYERS
//
skc_err
skc_styling_group_alloc(skc_styling_t styling,
skc_group_id * group_id);
skc_err
skc_styling_group_enter(skc_styling_t styling,
skc_group_id group_id,
uint32_t n,
skc_styling_cmd_t const * cmds);
skc_err
skc_styling_group_leave(skc_styling_t styling,
skc_group_id group_id,
uint32_t n,
skc_styling_cmd_t const * cmds);
skc_err
skc_styling_group_parents(skc_styling_t styling,
skc_group_id group_id,
uint32_t depth,
skc_group_id const * parents);
skc_err
skc_styling_group_range_lo(skc_styling_t styling,
skc_group_id group_id,
skc_layer_id layer_lo);
skc_err
skc_styling_group_range_hi(skc_styling_t styling,
skc_group_id group_id,
skc_layer_id layer_hi);
skc_err
skc_styling_group_layer(skc_styling_t styling,
skc_group_id group_id,
skc_layer_id layer_id,
uint32_t n,
skc_styling_cmd_t const * cmds);
//
// STYLING ENCODERS -- FIXME -- WILL EVENTUALLY BE OPAQUE
//
void
skc_styling_layer_fill_rgba_encoder(skc_styling_cmd_t * cmds, float const rgba[4]);
void
skc_styling_background_over_encoder(skc_styling_cmd_t * cmds, float const rgba[4]);
void
skc_styling_layer_fill_gradient_encoder(skc_styling_cmd_t * cmds,
float x0,
float y0,
float x1,
float y1,
skc_styling_gradient_type_e type,
uint32_t n,
float const stops[],
float const colors[]);
//
// SURFACE
//
skc_err
skc_surface_create(skc_context_t context, skc_surface_t * surface);
skc_err
skc_surface_retain(skc_surface_t surface);
skc_err
skc_surface_release(skc_surface_t surface);
//
// SURFACE RENDER
//
typedef void (*skc_surface_render_notify)(skc_surface_t surface,
skc_styling_t styling,
skc_composition_t composition,
skc_framebuffer_t fb,
void * data);
skc_err
skc_surface_render(skc_surface_t surface,
skc_styling_t styling,
skc_composition_t composition,
skc_framebuffer_t fb,
uint32_t const clip[4],
skc_surface_render_notify notify,
void * data);
//
// COORDINATED EXTERNAL OPERATIONS
//
// Examples include:
//
// - Transforming an intermediate layer with a blur, sharpen, rotation or scaling kernel.
// - Subpixel antialiasing using neighboring pixel color and coverage data.
// - Performing a blit from one region to another region on a surface.
// - Blitting from one surface to another.
// - Loading and processing from one region and storing to another region.
// - Rendezvousing with an external pipeline.
//
// FORTHCOMING...
//
// SCHEDULER
//
bool
skc_context_yield(skc_context_t context);
void
skc_context_wait(skc_context_t context);
//
//
//
#endif
//
//
//
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