[Git][freetype/freetype][gsoc-anurag-2023] Work on preloading font outli

Anurag Thakur pushed to branch gsoc-anurag-2023 at FreeType / FreeType

Commits:

d23d82d8
by Anurag Thakur at 2023-08-15T01:15:13+05:30
```
Work on preloading font outlines
```

2 changed files:

include/freetype/freetype.h
src/base/ftobjs.c

Changes:

@@ -2399,6 +2399,9 @@ FT_BEGIN_HEADER
     *   FT_OPEN_PARAMS ::
     *     Use the `num_params` and `params` fields.
+    *
 +   *   FT_OPEN_PRELOAD ::
 +   *     Preprocess the font outline to save cpu time later.
 +   *
     * @note:
     *   The `FT_OPEN_MEMORY`, `FT_OPEN_STREAM`, and `FT_OPEN_PATHNAME` flags
     *   are mutually exclusive.
@@ -2408,7 +2411,7 @@ FT_BEGIN_HEADER
  #define FT_OPEN_PATHNAME  0x4
  #define FT_OPEN_DRIVER    0x8
  #define FT_OPEN_PARAMS    0x10
+-
 +#define FT_OPEN_PRELOAD   0x20
    /* these constants are deprecated; use the corresponding `FT_OPEN_XXX` */
    /* values instead                                                      */
@@ -2572,6 +2575,12 @@ FT_BEGIN_HEADER
                 FT_Long      face_index,
                 FT_Face     *aface );
 +  FT_EXPORT( FT_Error )
 +  FT_New_Face2( FT_Library   library,
 +               const char*  filepathname,
 +               FT_Long      face_index,
 +               FT_Face     *aface,
 +               FT_UInt      flags);
    /**************************************************************************
+    *

src/base/ftobjs.c

@@ -1610,18 +1610,40 @@
+   {
      FT_Open_Args  args;
 +    /* test for valid `library' and `aface' delayed to `FT_Open_Face' */
 +    if ( !pathname )
 +      return FT_THROW( Invalid_Argument );
++
 +    args.flags    = FT_OPEN_PATHNAME;
 +    args.pathname = (char*)pathname;
 +    args.stream   = NULL;
++
 +    return ft_open_face_internal( library, &args, face_index, aface, 1 );
 +  }
++
++
 +  FT_EXPORT_DEF( FT_Error )
 +  FT_New_Face2( FT_Library   library,
 +                const char*  pathname,
 +                FT_Long      face_index,
 +                FT_Face     *aface,
 +                FT_UInt      flags)
 +  {
 +    FT_Open_Args  args;
      /* test for valid `library' and `aface' delayed to `FT_Open_Face' */
      if ( !pathname )
        return FT_THROW( Invalid_Argument );
      args.flags    = FT_OPEN_PATHNAME;
 +    args.flags   |= flags;
      args.pathname = (char*)pathname;
      args.stream   = NULL;
      return ft_open_face_internal( library, &args, face_index, aface, 1 );
+   }
++
  #endif
@@ -2540,7 +2562,11 @@
      FT_UNUSED( test_mac_fonts );
  #endif
+-
 +    if (args->flags & FT_OPEN_PRELOAD)
 +    {
 +      FT_TRACE0(("Requested Preload\n"));
 +    }
++
      /* only use lower 31 bits together with sign bit */
      if ( face_index > 0 )
        face_index &= 0x7FFFFFFFL;
@@ -2636,7 +2662,6 @@
            driver = FT_DRIVER( cur[0] );
 -          // TODO: Check the args for a "preload" flag and act accordingly
            if ( args->flags & FT_OPEN_PARAMS )
+           {
              num_params = args->num_params;
@@ -2727,7 +2752,12 @@
      /* face->driver instead.                                   */
      FT_List_Add( &face->driver->faces_list, node );
 -    // TODO: The preload logic should be performed here
 +    if (args->flags & FT_OPEN_PRELOAD)
 +    {
 +      /* Preload the font here */
 +    }
++
++
      /* now allocate a glyph slot object for the face */
      FT_TRACE4(( "FT_Open_Face: Creating glyph slot\n" ));
@@ -2749,6 +2779,8 @@
            goto Fail;
          face->size = size;
 +        // FT_Outline_Decompose here
++
+       }
+     }

From:	Anurag Thakur (@AdbhutDev)
Subject:	[Git][freetype/freetype][gsoc-anurag-2023] Work on preloading font outlines
Date:	Mon, 14 Aug 2023 19:45:35 +0000