--- /dev/null
+/*\r
+ * GPAC - Multimedia Framework C SDK\r
+ *\r
+ * Copyright (c) Jean Le Feuvre 2000-2005\r
+ * All rights reserved\r
+ *\r
+ * This file is part of GPAC / modules interfaces\r
+ *\r
+ * GPAC is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU Lesser General Public License as published by\r
+ * the Free Software Foundation; either version 2, or (at your option)\r
+ * any later version.\r
+ * \r
+ * GPAC is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU Lesser General Public License for more details.\r
+ * \r
+ * You should have received a copy of the GNU Lesser General Public\r
+ * License along with this library; see the file COPYING. If not, write to\r
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. \r
+ *\r
+ */\r
+\r
+\r
+#ifndef _GF_MODULE_RASTER2D_H_\r
+#define _GF_MODULE_RASTER2D_H_\r
+\r
+#ifdef __cplusplus\r
+extern "C" {\r
+#endif\r
+\r
+#include <gpac/path2d.h>\r
+#include <gpac/module.h>\r
+#include <gpac/color.h>\r
+\r
+\r
+/*stencil types*/\r
+typedef enum\r
+{\r
+ /*solid color stencil*/\r
+ GF_STENCIL_SOLID = 0,\r
+ /*linear color gradient stencil*/\r
+ GF_STENCIL_LINEAR_GRADIENT,\r
+ /*radial color gradient stencil*/\r
+ GF_STENCIL_RADIAL_GRADIENT,\r
+ /*texture stencil*/\r
+ GF_STENCIL_VERTEX_GRADIENT,\r
+ /*texture stencil*/\r
+ GF_STENCIL_TEXTURE,\r
+} GF_StencilType;\r
+\r
+\r
+/*gradient filling modes*/\r
+typedef enum\r
+{\r
+ /*edge colors are repeated until path is filled*/\r
+ GF_GRADIENT_MODE_PAD,\r
+ /*pattern is inversed each time it's repeated*/\r
+ GF_GRADIENT_MODE_SPREAD,\r
+ /*pattern is repeated to fill path*/\r
+ GF_GRADIENT_MODE_REPEAT\r
+} GF_GradientMode;\r
+\r
+\r
+/*texture tiling flags*/\r
+typedef enum\r
+{\r
+ /*texture is repeated in its horizontal direction*/\r
+ GF_TEXTURE_REPEAT_S = (1<<1),\r
+ /*texture is repeated in its horizontal direction*/\r
+ GF_TEXTURE_REPEAT_T = (1<<2),\r
+ /*texture is fliped vertically*/\r
+ GF_TEXTURE_FLIP = (1<<3),\r
+} GF_TextureTiling;\r
+\r
+/*filter levels for texturing - up to the graphics engine but the following levels are used by\r
+the client*/\r
+typedef enum\r
+{\r
+ /*high speed mapping (ex, no filtering applied)*/\r
+ GF_TEXTURE_FILTER_HIGH_SPEED,\r
+ /*compromise between speed and quality (ex, filter to nearest pixel)*/\r
+ GF_TEXTURE_FILTER_MID,\r
+ /*high quality mapping (ex, bi-linear/bi-cubic interpolation)*/\r
+ GF_TEXTURE_FILTER_HIGH_QUALITY\r
+} GF_TextureFilter;\r
+\r
+/* rasterizer antialiasing depending on the graphics engine*/\r
+typedef enum\r
+{\r
+ /*raster should use fastest mode possible (eg, no antialiasing)*/\r
+ GF_RASTER_HIGH_SPEED,\r
+ /*raster should use fast mode and good quality if possible*/\r
+ GF_RASTER_MID,\r
+ /*raster should use antialiasing*/\r
+ GF_RASTER_HIGH_QUALITY\r
+} GF_RasterLevel;\r
+\r
+\r
+/*user routines for raserizer. common syntaxes:\r
+ @cbk: user defined callback\r
+ @x, y: first pixel position of the run, in device memory (top-left) coordinates\r
+ @run_h_len: number of pixels to fill on line\r
+ @color: color to fill pixel with. USER MUST IGNORE THE ALPHA COMPONENT OF THIS COLOR, the final \r
+ alpha is computed by the lib\r
+ @alpha: blending amount (0->0xFF) for the pixels\r
+*/\r
+typedef struct\r
+{\r
+ void *cbk;\r
+ /*fills line pixels without any blending operation*/\r
+ void (*fill_run_no_alpha)(void *cbk, u32 x, u32 y, u32 run_h_len, GF_Color color);\r
+ /*fills line pixels without blending operation - alpha combines both fill color and anti-aliasing blending*/\r
+ void (*fill_run_alpha)(void *cbk, u32 x, u32 y, u32 run_h_len, GF_Color color, u32 alpha);\r
+} GF_RasterCallback;\r
+\r
+\r
+\r
+/*opaque handler for all stencils*/\r
+typedef void *GF_STENCIL;\r
+\r
+/*visual surface handler*/\r
+typedef void *GF_SURFACE;\r
+\r
+/*interface name and version for raster2D*/\r
+#define GF_RASTER_2D_INTERFACE GF_4CC('G','R','2', 0x02)\r
+\r
+/*graphics driver*/\r
+typedef struct _raster2d_interface\r
+{\r
+ /* interface declaration*/\r
+ GF_DECL_MODULE_INTERFACE\r
+\r
+ GF_STENCIL (*stencil_new) (struct _raster2d_interface *, GF_StencilType type);\r
+ /*common destructor for all stencils*/\r
+ void (*stencil_delete) (GF_STENCIL _this);\r
+ /*set stencil transformation matrix*/\r
+ GF_Err (*stencil_set_matrix) (GF_STENCIL _this, GF_Matrix2D *mat);\r
+ /*solid brush - set brush color*/\r
+ GF_Err (*stencil_set_brush_color) (GF_STENCIL _this, GF_Color c);\r
+ /*gradient brushes*/\r
+ /*sets gradient repeat mode - return GF_NOT_SUPPORTED if driver doesn't support this to let the app compute repeat patterns\r
+ this may be called before the gradient is setup*/\r
+ GF_Err (*stencil_set_gradient_mode) (GF_STENCIL _this, GF_GradientMode mode);\r
+ /*set linear gradient. line is defined by start and end, and you can give interpolation colors at specified positions*/\r
+ GF_Err (*stencil_set_linear_gradient) (GF_STENCIL _this, Fixed start_x, Fixed start_y, Fixed end_x, Fixed end_y);\r
+ /*radial gradient brush center point, focal point and radius - colors can only be set through set_interpolation */\r
+ GF_Err (*stencil_set_radial_gradient) (GF_STENCIL _this, Fixed cx, Fixed cy, Fixed fx, Fixed fy, Fixed x_radius, Fixed y_radius);\r
+ /*radial and linear gradient (not used with vertex) - set color interpolation at given points, \r
+ @pos[i]: distance from (center for radial, start for linear) expressed between 0 and 1 (1 being the gradient bounds)\r
+ @col[i]: associated color\r
+ NOTE 1: the colors at 0 and 1.0 MUST be provided\r
+ NOTE 2: colors shall be fed in order from 0 to 1\r
+ NOTE 3: this overrides the colors provided for linear gradient\r
+ */\r
+ GF_Err (*stencil_set_gradient_interpolation) (GF_STENCIL _this, Fixed *pos, GF_Color *col, u32 count);\r
+\r
+ /*vertex gradient : set limit path */\r
+ GF_Err (*stencil_set_vertex_path) (GF_STENCIL _this, GF_Path *path);\r
+ /*set the center of the gradient*/\r
+ GF_Err (*stencil_set_vertex_center) (GF_STENCIL _this, Fixed cx, Fixed cy, u32 color);\r
+ /*set the center of the gradient*/\r
+ GF_Err (*stencil_set_vertex_colors) (GF_STENCIL _this, u32 *colors, u32 nbCol);\r
+ \r
+ /*sets global alpha blending level for stencil (texture and gradients)\r
+ the alpha channel shall be combined with the color matrix if any*/\r
+ GF_Err (*stencil_set_alpha) (GF_STENCIL _this, u8 alpha);\r
+ \r
+ /*set stencil texture\r
+ @pixels: texture data, from top to bottom\r
+ @width, @height: texture size\r
+ @stride: texture horizontal pitch (bytes to skip to get to next row)\r
+ @pixelFormat: texture pixel format as defined in file constants.h\r
+ @destination_format_hint: this is the current pixel format of the destination surface, and is given\r
+ as a hint in case the texture needs to be converted by the stencil\r
+ @no_copy: if set, specifies the texture data shall not be cached by the module (eg it must be able\r
+ to directly modify the given memory\r
+ NOTE: this stencil acts as a data wrapper, the pixel data is not required to be locally copied\r
+ data is not required to be available for texturing until the stencil is used in a draw operation\r
+ */\r
+ GF_Err (*stencil_set_texture) (GF_STENCIL _this, char *pixels, u32 width, u32 height, u32 stride, GF_PixelFormat pixelFormat, GF_PixelFormat destination_format_hint, Bool no_copy);\r
+ /*creates internal texture - pixel data is owned by texture brush - set to NULL if not supported - this is used to \r
+ cope with engines that don't support random strides (ex: Gdiplus needs stride to be a multiple of 4) \r
+ if not set the compositor will create its own mem texture and pass it through set_texture - pixel format shall \r
+ be respected as far as Alpha is concerned (eg alpha info shall be kept and used in blit) */\r
+ GF_Err (*stencil_create_texture) (GF_STENCIL _this, u32 width, u32 height, GF_PixelFormat pixelFormat);\r
+ /*signals the texture has been modified (internal texture only)*/\r
+ void (*stencil_texture_modified) (GF_STENCIL _this);\r
+\r
+ /*sets texture tile mode*/\r
+ GF_Err (*stencil_set_tiling) (GF_STENCIL _this, GF_TextureTiling mode);\r
+ /*sets texture filtering mode*/\r
+ GF_Err (*stencil_set_filter) (GF_STENCIL _this, GF_TextureFilter filter_mode);\r
+ /*set stencil color matrix - texture stencils only. If matrix is NULL, resets current color matrix*/\r
+ GF_Err (*stencil_set_color_matrix) (GF_STENCIL _this, GF_ColorMatrix *cmat);\r
+\r
+ /*creates surface object*/\r
+ /* @center_coords: true indicates mathematical-like coord system, \r
+ false indicates computer-like coord system */\r
+ GF_SURFACE (*surface_new) (struct _raster2d_interface *, Bool center_coords);\r
+ /* delete surface object */\r
+ void (*surface_delete) (GF_SURFACE _this);\r
+\r
+ /* attach surface object to device object (Win32: HDC) width and height are target surface size*/\r
+ GF_Err (*surface_attach_to_device) (GF_SURFACE _this, void *os_handle, u32 width, u32 height);\r
+ /* attach surface object to stencil object*/\r
+ GF_Err (*surface_attach_to_texture) (GF_SURFACE _this, GF_STENCIL sten);\r
+ /* attach surface object to memory buffer if supported\r
+ @pixels: texture data\r
+ @width, @height: texture size\r
+ @stride: texture horizontal pitch (bytes to skip to get to next row)\r
+ @pixelFormat: texture pixel format\r
+ */\r
+ GF_Err (*surface_attach_to_buffer) (GF_SURFACE _this, char *pixels, u32 width, u32 height, u32 stride, GF_PixelFormat pixelFormat);\r
+\r
+ GF_Err (*surface_attach_to_callbacks) (GF_SURFACE _this, GF_RasterCallback *callbacks, u32 width, u32 height);\r
+\r
+ /* detach surface object */\r
+ void (*surface_detach) (GF_SURFACE _this);\r
+\r
+ /*sets rasterizer precision */\r
+ GF_Err (*surface_set_raster_level) (GF_SURFACE _this, GF_RasterLevel RasterSetting);\r
+ /* set the given matrix as the current transformations for all drawn paths\r
+ if NULL reset the current transformation */\r
+ GF_Err (*surface_set_matrix) (GF_SURFACE _this, GF_Matrix2D *mat);\r
+ /* set the given rectangle as a clipper - nothing will be drawn outside this clipper\r
+ if the clipper is NULL then no clipper is set\r
+ NB: the clipper is not affected by the surface matrix and is given in pixels\r
+ CF ABOVE NOTE ON CLIPPERS*/\r
+ GF_Err (*surface_set_clipper) (GF_SURFACE _this, GF_IRect *rc);\r
+\r
+ /*sets the given path as the current one for drawing - the surface transform is NEVER changed between\r
+ setting the path and filling, only the clipper may change*/\r
+ GF_Err (*surface_set_path) (GF_SURFACE _this, GF_Path *path);\r
+ /*fills the current path using the given stencil - can be called several times with the same current path*/\r
+ GF_Err (*surface_fill) (GF_SURFACE _this, GF_STENCIL stencil);\r
+\r
+ /*flushes to surface*/\r
+ GF_Err (*surface_flush) (GF_SURFACE _this);\r
+\r
+ /*clears given pixel rect on the surface with the given color - REQUIRED\r
+ the given rect is formatted as a clipper - CF ABOVE NOTE ON CLIPPERS*/\r
+ GF_Err (*surface_clear)(GF_SURFACE _this, GF_IRect *rc, GF_Color col);\r
+\r
+/*private:*/\r
+ void *internal;\r
+} GF_Raster2D;\r
+\r
+\r
+\r
+#ifdef __cplusplus\r
+}\r
+#endif\r
+\r
+\r
+#endif /*_GF_MODULE_RASTER2D_H_*/\r
+\r
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