Update freetype to latest version of ASOP.

src/cache/ftcbasic.c

Index: src/cache/ftcbasic.c
diff --git a/src/cache/ftcbasic.c b/src/cache/ftcbasic.c
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index 0000000000000000000000000000000000000000..84d336d5d6ba25253c4c64bb4559a48a010ec6d6
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+++ b/src/cache/ftcbasic.c
@@ -0,0 +1,602 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftcbasic.c                                                             */
+/*                                                                         */
+/*    The FreeType basic cache interface (body).                           */
+/*                                                                         */
+/*  Copyright 2003-2007, 2009-2011, 2013 by                                */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_OBJECTS_H
+#include FT_INTERNAL_DEBUG_H
+#include FT_CACHE_H
+#include "ftcglyph.h"
+#include "ftcimage.h"
+#include "ftcsbits.h"
+
+#include "ftccback.h"
+#include "ftcerror.h"
+
+#define FT_COMPONENT  trace_cache
+
+
+  /*
+   *  Basic Families
+   *
+   */
+  typedef struct  FTC_BasicAttrRec_
+  {
+    FTC_ScalerRec  scaler;
+    FT_UInt        load_flags;
+
+  } FTC_BasicAttrRec, *FTC_BasicAttrs;
+
+#define FTC_BASIC_ATTR_COMPARE( a, b )                                 \
+          FT_BOOL( FTC_SCALER_COMPARE( &(a)->scaler, &(b)->scaler ) && \
+                   (a)->load_flags == (b)->load_flags               )
+
+#define FTC_BASIC_ATTR_HASH( a )                                   \
+          ( FTC_SCALER_HASH( &(a)->scaler ) + 31*(a)->load_flags )
+
+
+  typedef struct  FTC_BasicQueryRec_
+  {
+    FTC_GQueryRec     gquery;
+    FTC_BasicAttrRec  attrs;
+
+  } FTC_BasicQueryRec, *FTC_BasicQuery;
+
+
+  typedef struct  FTC_BasicFamilyRec_
+  {
+    FTC_FamilyRec     family;
+    FTC_BasicAttrRec  attrs;
+
+  } FTC_BasicFamilyRec, *FTC_BasicFamily;
+
+
+  FT_CALLBACK_DEF( FT_Bool )
+  ftc_basic_family_compare( FTC_MruNode  ftcfamily,
+                            FT_Pointer   ftcquery )
+  {
+    FTC_BasicFamily  family = (FTC_BasicFamily)ftcfamily;
+    FTC_BasicQuery   query  = (FTC_BasicQuery)ftcquery;
+
+
+    return FTC_BASIC_ATTR_COMPARE( &family->attrs, &query->attrs );
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  ftc_basic_family_init( FTC_MruNode  ftcfamily,
+                         FT_Pointer   ftcquery,
+                         FT_Pointer   ftccache )
+  {
+    FTC_BasicFamily  family = (FTC_BasicFamily)ftcfamily;
+    FTC_BasicQuery   query  = (FTC_BasicQuery)ftcquery;
+    FTC_Cache        cache  = (FTC_Cache)ftccache;
+
+
+    FTC_Family_Init( FTC_FAMILY( family ), cache );
+    family->attrs = query->attrs;
+    return 0;
+  }
+
+
+  FT_CALLBACK_DEF( FT_UInt )
+  ftc_basic_family_get_count( FTC_Family   ftcfamily,
+                              FTC_Manager  manager )
+  {
+    FTC_BasicFamily  family = (FTC_BasicFamily)ftcfamily;
+    FT_Error         error;
+    FT_Face          face;
+    FT_UInt          result = 0;
+
+
+    error = FTC_Manager_LookupFace( manager, family->attrs.scaler.face_id,
+                                    &face );
+
+    if ( error || !face )
+      return result;
+
+    if ( (FT_ULong)face->num_glyphs > FT_UINT_MAX || 0 > face->num_glyphs )
+    {
+      FT_TRACE1(( "ftc_basic_family_get_count: too large number of glyphs " ));
+      FT_TRACE1(( "in this face, truncated\n", face->num_glyphs ));
+    }
+
+    if ( !error )
+      result = (FT_UInt)face->num_glyphs;
+
+    return result;
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  ftc_basic_family_load_bitmap( FTC_Family   ftcfamily,
+                                FT_UInt      gindex,
+                                FTC_Manager  manager,
+                                FT_Face     *aface )
+  {
+    FTC_BasicFamily  family = (FTC_BasicFamily)ftcfamily;
+    FT_Error         error;
+    FT_Size          size;
+
+
+    error = FTC_Manager_LookupSize( manager, &family->attrs.scaler, &size );
+    if ( !error )
+    {
+      FT_Face  face = size->face;
+
+
+      error = FT_Load_Glyph( face, gindex,
+                             family->attrs.load_flags | FT_LOAD_RENDER );
+      if ( !error )
+        *aface = face;
+    }
+
+    return error;
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  ftc_basic_family_load_glyph( FTC_Family  ftcfamily,
+                               FT_UInt     gindex,
+                               FTC_Cache   cache,
+                               FT_Glyph   *aglyph )
+  {
+    FTC_BasicFamily  family = (FTC_BasicFamily)ftcfamily;
+    FT_Error         error;
+    FTC_Scaler       scaler = &family->attrs.scaler;
+    FT_Face          face;
+    FT_Size          size;
+
+
+    /* we will now load the glyph image */
+    error = FTC_Manager_LookupSize( cache->manager,
+                                    scaler,
+                                    &size );
+    if ( !error )
+    {
+      face = size->face;
+
+      error = FT_Load_Glyph( face, gindex, family->attrs.load_flags );
+      if ( !error )
+      {
+        if ( face->glyph->format == FT_GLYPH_FORMAT_BITMAP  ||
+             face->glyph->format == FT_GLYPH_FORMAT_OUTLINE )
+        {
+          /* ok, copy it */
+          FT_Glyph  glyph;
+
+
+          error = FT_Get_Glyph( face->glyph, &glyph );
+          if ( !error )
+          {
+            *aglyph = glyph;
+            goto Exit;
+          }
+        }
+        else
+          error = FT_THROW( Invalid_Argument );
+      }
+    }
+
+  Exit:
+    return error;
+  }
+
+
+  FT_CALLBACK_DEF( FT_Bool )
+  ftc_basic_gnode_compare_faceid( FTC_Node    ftcgnode,
+                                  FT_Pointer  ftcface_id,
+                                  FTC_Cache   cache,
+                                  FT_Bool*    list_changed )
+  {
+    FTC_GNode        gnode   = (FTC_GNode)ftcgnode;
+    FTC_FaceID       face_id = (FTC_FaceID)ftcface_id;
+    FTC_BasicFamily  family  = (FTC_BasicFamily)gnode->family;
+    FT_Bool          result;
+
+
+    if ( list_changed )
+      *list_changed = FALSE;
+    result = FT_BOOL( family->attrs.scaler.face_id == face_id );
+    if ( result )
+    {
+      /* we must call this function to avoid this node from appearing
+       * in later lookups with the same face_id!
+       */
+      FTC_GNode_UnselectFamily( gnode, cache );
+    }
+    return result;
+  }
+
+
+ /*
+  *
+  * basic image cache
+  *
+  */
+
+  FT_CALLBACK_TABLE_DEF
+  const FTC_IFamilyClassRec  ftc_basic_image_family_class =
+  {
+    {
+      sizeof ( FTC_BasicFamilyRec ),
+      ftc_basic_family_compare,
+      ftc_basic_family_init,
+      0,                        /* FTC_MruNode_ResetFunc */
+      0                         /* FTC_MruNode_DoneFunc  */
+    },
+    ftc_basic_family_load_glyph
+  };
+
+
+  FT_CALLBACK_TABLE_DEF
+  const FTC_GCacheClassRec  ftc_basic_image_cache_class =
+  {
+    {
+      ftc_inode_new,
+      ftc_inode_weight,
+      ftc_gnode_compare,
+      ftc_basic_gnode_compare_faceid,
+      ftc_inode_free,
+
+      sizeof ( FTC_GCacheRec ),
+      ftc_gcache_init,
+      ftc_gcache_done
+    },
+    (FTC_MruListClass)&ftc_basic_image_family_class
+  };
+
+
+  /* documentation is in ftcache.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FTC_ImageCache_New( FTC_Manager      manager,
+                      FTC_ImageCache  *acache )
+  {
+    return FTC_GCache_New( manager, &ftc_basic_image_cache_class,
+                           (FTC_GCache*)acache );
+  }
+
+
+  /* documentation is in ftcache.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FTC_ImageCache_Lookup( FTC_ImageCache  cache,
+                         FTC_ImageType   type,
+                         FT_UInt         gindex,
+                         FT_Glyph       *aglyph,
+                         FTC_Node       *anode )
+  {
+    FTC_BasicQueryRec  query;
+    FTC_Node           node = 0; /* make compiler happy */
+    FT_Error           error;
+    FT_PtrDist         hash;
+
+
+    /* some argument checks are delayed to FTC_Cache_Lookup */
+    if ( !aglyph )
+    {
+      error = FT_THROW( Invalid_Argument );
+      goto Exit;
+    }
+
+    *aglyph = NULL;
+    if ( anode )
+      *anode  = NULL;
+
+    {
+      if ( (FT_ULong)(type->flags - FT_INT_MIN) > FT_UINT_MAX )
+      {
+        FT_TRACE1(( "FTC_ImageCache_Lookup: higher bits in load_flags" ));
+        FT_TRACE1(( "0x%x are dropped\n", (type->flags & ~((FT_ULong)FT_UINT_MAX)) ));
+      }
+
+      query.attrs.scaler.face_id = type->face_id;
+      query.attrs.scaler.width   = type->width;
+      query.attrs.scaler.height  = type->height;
+      query.attrs.load_flags     = (FT_UInt)type->flags;
+    }
+
+    query.attrs.scaler.pixel = 1;
+    query.attrs.scaler.x_res = 0;  /* make compilers happy */
+    query.attrs.scaler.y_res = 0;
+
+    hash = FTC_BASIC_ATTR_HASH( &query.attrs ) + gindex;
+
+#if 1  /* inlining is about 50% faster! */
+    FTC_GCACHE_LOOKUP_CMP( cache,
+                           ftc_basic_family_compare,
+                           FTC_GNode_Compare,
+                           hash, gindex,
+                           &query,
+                           node,
+                           error );
+#else
+    error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
+                               hash, gindex,
+                               FTC_GQUERY( &query ),
+                               &node );
+#endif
+    if ( !error )
+    {
+      *aglyph = FTC_INODE( node )->glyph;
+
+      if ( anode )
+      {
+        *anode = node;
+        node->ref_count++;
+      }
+    }
+
+  Exit:
+    return error;
+  }
+
+
+  /* documentation is in ftcache.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FTC_ImageCache_LookupScaler( FTC_ImageCache  cache,
+                               FTC_Scaler      scaler,
+                               FT_ULong        load_flags,
+                               FT_UInt         gindex,
+                               FT_Glyph       *aglyph,
+                               FTC_Node       *anode )
+  {
+    FTC_BasicQueryRec  query;
+    FTC_Node           node = 0; /* make compiler happy */
+    FT_Error           error;
+    FT_PtrDist         hash;
+
+
+    /* some argument checks are delayed to FTC_Cache_Lookup */
+    if ( !aglyph || !scaler )
+    {
+      error = FT_THROW( Invalid_Argument );
+      goto Exit;
+    }
+
+    *aglyph = NULL;
+    if ( anode )
+      *anode  = NULL;
+
+    /* FT_Load_Glyph(), FT_Load_Char() take FT_UInt flags */
+    if ( load_flags > FT_UINT_MAX )
+    {
+      FT_TRACE1(( "FTC_ImageCache_LookupScaler: higher bits in load_flags" ));
+      FT_TRACE1(( "0x%x are dropped\n", (load_flags & ~((FT_ULong)FT_UINT_MAX)) ));
+    }
+
+    query.attrs.scaler     = scaler[0];
+    query.attrs.load_flags = (FT_UInt)load_flags;
+
+    hash = FTC_BASIC_ATTR_HASH( &query.attrs ) + gindex;
+
+    FTC_GCACHE_LOOKUP_CMP( cache,
+                           ftc_basic_family_compare,
+                           FTC_GNode_Compare,
+                           hash, gindex,
+                           &query,
+                           node,
+                           error );
+    if ( !error )
+    {
+      *aglyph = FTC_INODE( node )->glyph;
+
+      if ( anode )
+      {
+        *anode = node;
+        node->ref_count++;
+      }
+    }
+
+  Exit:
+    return error;
+  }
+
+
+  /*
+   *
+   * basic small bitmap cache
+   *
+   */
+
+  FT_CALLBACK_TABLE_DEF
+  const FTC_SFamilyClassRec  ftc_basic_sbit_family_class =
+  {
+    {
+      sizeof ( FTC_BasicFamilyRec ),
+      ftc_basic_family_compare,
+      ftc_basic_family_init,
+      0,                            /* FTC_MruNode_ResetFunc */
+      0                             /* FTC_MruNode_DoneFunc  */
+    },
+    ftc_basic_family_get_count,
+    ftc_basic_family_load_bitmap
+  };
+
+
+  FT_CALLBACK_TABLE_DEF
+  const FTC_GCacheClassRec  ftc_basic_sbit_cache_class =
+  {
+    {
+      ftc_snode_new,
+      ftc_snode_weight,
+      ftc_snode_compare,
+      ftc_basic_gnode_compare_faceid,
+      ftc_snode_free,
+
+      sizeof ( FTC_GCacheRec ),
+      ftc_gcache_init,
+      ftc_gcache_done
+    },
+    (FTC_MruListClass)&ftc_basic_sbit_family_class
+  };
+
+
+  /* documentation is in ftcache.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FTC_SBitCache_New( FTC_Manager     manager,
+                     FTC_SBitCache  *acache )
+  {
+    return FTC_GCache_New( manager, &ftc_basic_sbit_cache_class,
+                           (FTC_GCache*)acache );
+  }
+
+
+  /* documentation is in ftcache.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FTC_SBitCache_Lookup( FTC_SBitCache  cache,
+                        FTC_ImageType  type,
+                        FT_UInt        gindex,
+                        FTC_SBit      *ansbit,
+                        FTC_Node      *anode )
+  {
+    FT_Error           error;
+    FTC_BasicQueryRec  query;
+    FTC_Node           node = 0; /* make compiler happy */
+    FT_PtrDist         hash;
+
+
+    if ( anode )
+      *anode = NULL;
+
+    /* other argument checks delayed to FTC_Cache_Lookup */
+    if ( !ansbit )
+      return FT_THROW( Invalid_Argument );
+
+    *ansbit = NULL;
+
+    {
+      if ( (FT_ULong)(type->flags - FT_INT_MIN) > FT_UINT_MAX )
+      {
+        FT_TRACE1(( "FTC_ImageCache_Lookup: higher bits in load_flags" ));
+        FT_TRACE1(( "0x%x are dropped\n", (type->flags & ~((FT_ULong)FT_UINT_MAX)) ));
+      }
+
+      query.attrs.scaler.face_id = type->face_id;
+      query.attrs.scaler.width   = type->width;
+      query.attrs.scaler.height  = type->height;
+      query.attrs.load_flags     = (FT_UInt)type->flags;
+    }
+
+    query.attrs.scaler.pixel = 1;
+    query.attrs.scaler.x_res = 0;  /* make compilers happy */
+    query.attrs.scaler.y_res = 0;
+
+    /* beware, the hash must be the same for all glyph ranges! */
+    hash = FTC_BASIC_ATTR_HASH( &query.attrs ) +
+           gindex / FTC_SBIT_ITEMS_PER_NODE;
+
+#if 1  /* inlining is about 50% faster! */
+    FTC_GCACHE_LOOKUP_CMP( cache,
+                           ftc_basic_family_compare,
+                           FTC_SNode_Compare,
+                           hash, gindex,
+                           &query,
+                           node,
+                           error );
+#else
+    error = FTC_GCache_Lookup( FTC_GCACHE( cache ),
+                               hash,
+                               gindex,
+                               FTC_GQUERY( &query ),
+                               &node );
+#endif
+    if ( error )
+      goto Exit;
+
+    *ansbit = FTC_SNODE( node )->sbits +
+              ( gindex - FTC_GNODE( node )->gindex );
+
+    if ( anode )
+    {
+      *anode = node;
+      node->ref_count++;
+    }
+
+  Exit:
+    return error;
+  }
+
+
+  /* documentation is in ftcache.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FTC_SBitCache_LookupScaler( FTC_SBitCache  cache,
+                              FTC_Scaler     scaler,
+                              FT_ULong       load_flags,
+                              FT_UInt        gindex,
+                              FTC_SBit      *ansbit,
+                              FTC_Node      *anode )
+  {
+    FT_Error           error;
+    FTC_BasicQueryRec  query;
+    FTC_Node           node = 0; /* make compiler happy */
+    FT_PtrDist         hash;
+
+
+    if ( anode )
+        *anode = NULL;
+
+    /* other argument checks delayed to FTC_Cache_Lookup */
+    if ( !ansbit || !scaler )
+        return FT_THROW( Invalid_Argument );
+
+    *ansbit = NULL;
+
+    /* FT_Load_Glyph(), FT_Load_Char() take FT_UInt flags */
+    if ( load_flags > FT_UINT_MAX )
+    {
+      FT_TRACE1(( "FTC_ImageCache_LookupScaler: higher bits in load_flags" ));
+      FT_TRACE1(( "0x%x are dropped\n", (load_flags & ~((FT_ULong)FT_UINT_MAX)) ));
+    }
+
+    query.attrs.scaler     = scaler[0];
+    query.attrs.load_flags = (FT_UInt)load_flags;
+
+    /* beware, the hash must be the same for all glyph ranges! */
+    hash = FTC_BASIC_ATTR_HASH( &query.attrs ) +
+             gindex / FTC_SBIT_ITEMS_PER_NODE;
+
+    FTC_GCACHE_LOOKUP_CMP( cache,
+                           ftc_basic_family_compare,
+                           FTC_SNode_Compare,
+                           hash, gindex,
+                           &query,
+                           node,
+                           error );
+    if ( error )
+      goto Exit;
+
+    *ansbit = FTC_SNODE( node )->sbits +
+              ( gindex - FTC_GNODE( node )->gindex );
+
+    if ( anode )
+    {
+      *anode = node;
+      node->ref_count++;
+    }
+
+  Exit:
+    return error;
+  }
+
+
+/* END */