[freetype2] anuj-distance-field f41ee8f 67/93: [sdf] Added new renderer `bsdf'.

[Anuj Verma]

branch: anuj-distance-field
commit f41ee8f0c3480187c677aa6b82dad59e1a3606fe
Author: Anuj Verma <anujv@iitbhilai.ac.in>
Commit: anujverma <anujv@iitbhilai.ac.in>

    [sdf] Added new renderer `bsdf'.
    
    * src/sdf/ftsdfrend.* (*): Added new renderer
      named `bsdf' which basically convert bitmap
      to signed distance fields. This is a part of
      the `sdf' module and not a separate module on
      it's own.
    
    * src/sdf/module.mk (FTMODULE_H_COMMANDS): Add
      the new renderer to the list of modules.
    
    * include/freetype/config/ftmodule.h: Add the
      new renderer to default list of modules when
      not compiling with GNU Make.
---
 [GSoC]ChangeLog                    | 17 +++++++++++++++
 include/freetype/config/ftmodule.h |  1 +
 src/sdf/ftsdfrend.c                | 43 ++++++++++++++++++++++++++++++++++++++
 src/sdf/ftsdfrend.h                | 25 ++++++++++++++++++++++
 src/sdf/module.mk                  |  6 ++++++
 5 files changed, 92 insertions(+)

diff --git a/[GSoC]ChangeLog b/[GSoC]ChangeLog
index e7857a5..5faae7a 100644
--- a/[GSoC]ChangeLog
+++ b/[GSoC]ChangeLog
@@ -1,3 +1,20 @@
+2020-07-19  Anuj Verma  <anujv@iitbhilai.ac.in>
+
+       [sdf] Added new renderer `bsdf'.
+
+       * src/sdf/ftsdfrend.* (*): Added new renderer
+         named `bsdf' which basically convert bitmap
+         to signed distance fields. This is a part of
+         the `sdf' module and not a separate module on
+         it's own.
+
+       * src/sdf/module.mk (FTMODULE_H_COMMANDS): Add
+         the new renderer to the list of modules.
+
+       * include/freetype/config/ftmodule.h: Add the
+         new renderer to default list of modules when
+         not compiling with GNU Make.
+
 2020-07-18  Anuj Verma  <anujv@iitbhilai.ac.in>
 
        [sdf] Only track memory in debug mode.
diff --git a/include/freetype/config/ftmodule.h 
b/include/freetype/config/ftmodule.h
index 81b6655..2b46009 100644
--- a/include/freetype/config/ftmodule.h
+++ b/include/freetype/config/ftmodule.h
@@ -27,5 +27,6 @@ FT_USE_MODULE( FT_Module_Class, sfnt_module_class )
 FT_USE_MODULE( FT_Renderer_Class, ft_smooth_renderer_class )
 FT_USE_MODULE( FT_Driver_ClassRec, bdf_driver_class )
 FT_USE_MODULE( FT_Renderer_Class, ft_sdf_renderer_class )
+FT_USE_MODULE( FT_Renderer_Class, ft_bitmap_sdf_renderer_class )
 
 /* EOF */
diff --git a/src/sdf/ftsdfrend.c b/src/sdf/ftsdfrend.c
index e3e70c6..ffe8f49 100644
--- a/src/sdf/ftsdfrend.c
+++ b/src/sdf/ftsdfrend.c
@@ -393,4 +393,47 @@
     (FT_Raster_Funcs*)&ft_sdf_raster               /* raster_class    */
   )
 
+  /*************************************************************************/
+  /*************************************************************************/
+  /**                                                                     **/
+  /**  BITMAP TO SDF CONVERTER                                            **/
+  /**                                                                     **/
+  /*************************************************************************/
+  /*************************************************************************/
+
+  static FT_Error
+  ft_bsdf_render( FT_Renderer      module,
+                 FT_GlyphSlot      slot,
+                 FT_Render_Mode    mode,
+                 const FT_Vector*  origin )
+  {
+    
+  }
+
+  FT_DEFINE_RENDERER(
+    ft_bitmap_sdf_renderer_class,
+
+    FT_MODULE_RENDERER,
+    sizeof( SDF_Renderer_Module ),
+
+    "bsdf",
+    0x10000L,
+    0x20000L,
+
+    NULL,
+
+    (FT_Module_Constructor) ft_sdf_init,
+    (FT_Module_Destructor)  ft_sdf_done,
+    (FT_Module_Requester)   ft_sdf_requester,
+
+    FT_GLYPH_FORMAT_BITMAP,
+
+    (FT_Renderer_RenderFunc)    ft_bsdf_render,    /* render_glyph    */
+    (FT_Renderer_TransformFunc) ft_sdf_transform,  /* transform_glyph */
+    (FT_Renderer_GetCBoxFunc)   ft_sdf_get_cbox,   /* get_glyph_cbox  */
+    (FT_Renderer_SetModeFunc)   ft_sdf_set_mode,   /* set_mode        */
+
+    (FT_Raster_Funcs*)NULL                         /* raster_class    */
+  )
+
 /* END */
diff --git a/src/sdf/ftsdfrend.h b/src/sdf/ftsdfrend.h
index 262a2a1..3ba7b9d 100644
--- a/src/sdf/ftsdfrend.h
+++ b/src/sdf/ftsdfrend.h
@@ -35,9 +35,34 @@ FT_BEGIN_HEADER
   } SDF_Renderer_Module, *SDF_Renderer;
 
 
+  /**************************************************************************
+   *
+   * @renderer:
+   *   ft_sdf_renderer_class
+   *
+   * @description:
+   *   Renderer to convert `FT_Outline' to signed distance fields.
+   *
+   */
   FT_DECLARE_RENDERER( ft_sdf_renderer_class )
 
 
+  /**************************************************************************
+   *
+   * @renderer:
+   *   ft_bitmap_sdf_renderer_class
+   *
+   * @description:
+   *   This is not exactly a renderer, it's just a converter which
+   *   convert bitmaps to signed distance fields.
+   *
+   * @note:
+   *   This is not a seperate module, it is a part of the `sdf' module.
+   *
+   */
+  FT_DECLARE_RENDERER( ft_bitmap_sdf_renderer_class )
+
+
 FT_END_HEADER
 
 #endif /* FTSDFREND_H_ */
diff --git a/src/sdf/module.mk b/src/sdf/module.mk
index d4253bd..978e13f 100644
--- a/src/sdf/module.mk
+++ b/src/sdf/module.mk
@@ -1,10 +1,16 @@
 
 
 FTMODULE_H_COMMANDS += SDF_RENDERER
+FTMODULE_H_COMMANDS += BSDF_RENDERER
 
 define SDF_RENDERER
 $(OPEN_DRIVER) FT_Renderer_Class, ft_sdf_renderer_class $(CLOSE_DRIVER)
 $(ECHO_DRIVER)sdf       $(ECHO_DRIVER_DESC)signed distance field 
renderer$(ECHO_DRIVER_DONE)
 endef
 
+define BSDF_RENDERER
+$(OPEN_DRIVER) FT_Renderer_Class, ft_bitmap_sdf_renderer_class $(CLOSE_DRIVER)
+$(ECHO_DRIVER)bsdf      $(ECHO_DRIVER_DESC)bitmap to signed distance field 
converter$(ECHO_DRIVER_DONE)
+endef
+
 #EOF