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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 681 insertions, 0 deletions

diff --git a/src/3rdparty/freetype/src/pcf/pcfdrivr.c b/src/3rdparty/freetype/src/pcf/pcfdrivr.c
new file mode 100644
index 0000000000..e2d4d3d874
--- /dev/null
+++ b/src/3rdparty/freetype/src/pcf/pcfdrivr.c
@@ -0,0 +1,681 @@
+/*  pcfdrivr.c
+
+    FreeType font driver for pcf files
+
+    Copyright (C) 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009 by
+    Francesco Zappa Nardelli
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+
+#include <ft2build.h>
+
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_STREAM_H
+#include FT_INTERNAL_OBJECTS_H
+#include FT_GZIP_H
+#include FT_LZW_H
+#include FT_ERRORS_H
+#include FT_BDF_H
+
+#include "pcf.h"
+#include "pcfdrivr.h"
+#include "pcfread.h"
+
+#include "pcferror.h"
+#include "pcfutil.h"
+
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_pcfread
+
+#include FT_SERVICE_BDF_H
+#include FT_SERVICE_XFREE86_NAME_H
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
+  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
+  /* messages during execution.                                            */
+  /*                                                                       */
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_pcfdriver
+
+
+  typedef struct  PCF_CMapRec_
+  {
+    FT_CMapRec    root;
+    FT_UInt       num_encodings;
+    PCF_Encoding  encodings;
+
+  } PCF_CMapRec, *PCF_CMap;
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  pcf_cmap_init( FT_CMap     pcfcmap,   /* PCF_CMap */
+                 FT_Pointer  init_data )
+  {
+    PCF_CMap  cmap = (PCF_CMap)pcfcmap;
+    PCF_Face  face = (PCF_Face)FT_CMAP_FACE( pcfcmap );
+
+    FT_UNUSED( init_data );
+
+
+    cmap->num_encodings = (FT_UInt)face->nencodings;
+    cmap->encodings     = face->encodings;
+
+    return PCF_Err_Ok;
+  }
+
+
+  FT_CALLBACK_DEF( void )
+  pcf_cmap_done( FT_CMap  pcfcmap )         /* PCF_CMap */
+  {
+    PCF_CMap  cmap = (PCF_CMap)pcfcmap;
+
+
+    cmap->encodings     = NULL;
+    cmap->num_encodings = 0;
+  }
+
+
+  FT_CALLBACK_DEF( FT_UInt )
+  pcf_cmap_char_index( FT_CMap    pcfcmap,  /* PCF_CMap */
+                       FT_UInt32  charcode )
+  {
+    PCF_CMap      cmap      = (PCF_CMap)pcfcmap;
+    PCF_Encoding  encodings = cmap->encodings;
+    FT_UInt       min, max, mid;
+    FT_UInt       result    = 0;
+
+
+    min = 0;
+    max = cmap->num_encodings;
+
+    while ( min < max )
+    {
+      FT_UInt32  code;
+
+
+      mid  = ( min + max ) >> 1;
+      code = encodings[mid].enc;
+
+      if ( charcode == code )
+      {
+        result = encodings[mid].glyph + 1;
+        break;
+      }
+
+      if ( charcode < code )
+        max = mid;
+      else
+        min = mid + 1;
+    }
+
+    return result;
+  }
+
+
+  FT_CALLBACK_DEF( FT_UInt )
+  pcf_cmap_char_next( FT_CMap    pcfcmap,   /* PCF_CMap */
+                      FT_UInt32  *acharcode )
+  {
+    PCF_CMap      cmap      = (PCF_CMap)pcfcmap;
+    PCF_Encoding  encodings = cmap->encodings;
+    FT_UInt       min, max, mid;
+    FT_UInt32     charcode  = *acharcode + 1;
+    FT_UInt       result    = 0;
+
+
+    min = 0;
+    max = cmap->num_encodings;
+
+    while ( min < max )
+    {
+      FT_UInt32  code;
+
+
+      mid  = ( min + max ) >> 1;
+      code = encodings[mid].enc;
+
+      if ( charcode == code )
+      {
+        result = encodings[mid].glyph + 1;
+        goto Exit;
+      }
+
+      if ( charcode < code )
+        max = mid;
+      else
+        min = mid + 1;
+    }
+
+    charcode = 0;
+    if ( min < cmap->num_encodings )
+    {
+      charcode = encodings[min].enc;
+      result   = encodings[min].glyph + 1;
+    }
+
+  Exit:
+    *acharcode = charcode;
+    return result;
+  }
+
+
+  FT_CALLBACK_TABLE_DEF
+  const FT_CMap_ClassRec  pcf_cmap_class =
+  {
+    sizeof ( PCF_CMapRec ),
+    pcf_cmap_init,
+    pcf_cmap_done,
+    pcf_cmap_char_index,
+    pcf_cmap_char_next,
+
+    NULL, NULL, NULL, NULL, NULL
+  };
+
+
+  FT_CALLBACK_DEF( void )
+  PCF_Face_Done( FT_Face  pcfface )         /* PCF_Face */
+  {
+    PCF_Face   face = (PCF_Face)pcfface;
+    FT_Memory  memory;
+
+
+    if ( !face )
+      return;
+
+    memory = FT_FACE_MEMORY( face );
+
+    FT_FREE( face->encodings );
+    FT_FREE( face->metrics );
+
+    /* free properties */
+    {
+      PCF_Property  prop;
+      FT_Int        i;
+
+
+      if ( face->properties )
+      {
+        for ( i = 0; i < face->nprops; i++ )
+        {
+          prop = &face->properties[i];
+
+          if ( prop ) {
+            FT_FREE( prop->name );
+            if ( prop->isString )
+              FT_FREE( prop->value.atom );
+          }
+        }
+      }
+      FT_FREE( face->properties );
+    }
+
+    FT_FREE( face->toc.tables );
+    FT_FREE( pcfface->family_name );
+    FT_FREE( pcfface->style_name );
+    FT_FREE( pcfface->available_sizes );
+    FT_FREE( face->charset_encoding );
+    FT_FREE( face->charset_registry );
+
+    FT_TRACE4(( "PCF_Face_Done: done face\n" ));
+
+    /* close gzip/LZW stream if any */
+    if ( pcfface->stream == &face->gzip_stream )
+    {
+      FT_Stream_Close( &face->gzip_stream );
+      pcfface->stream = face->gzip_source;
+    }
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  PCF_Face_Init( FT_Stream      stream,
+                 FT_Face        pcfface,        /* PCF_Face */
+                 FT_Int         face_index,
+                 FT_Int         num_params,
+                 FT_Parameter*  params )
+  {
+    PCF_Face  face  = (PCF_Face)pcfface;
+    FT_Error  error = PCF_Err_Ok;
+
+    FT_UNUSED( num_params );
+    FT_UNUSED( params );
+    FT_UNUSED( face_index );
+
+
+    error = pcf_load_font( stream, face );
+    if ( error )
+    {
+      FT_Error  error2;
+
+
+      PCF_Face_Done( pcfface );
+
+      /* this didn't work, try gzip support! */
+      error2 = FT_Stream_OpenGzip( &face->gzip_stream, stream );
+      if ( FT_ERROR_BASE( error2 ) == FT_Err_Unimplemented_Feature )
+        goto Fail;
+
+      error = error2;
+      if ( error )
+#ifdef FT_CONFIG_OPTION_USE_LZW
+      {
+        FT_Error  error3;
+
+
+        /* this didn't work, try LZW support! */
+        error3 = FT_Stream_OpenLZW( &face->gzip_stream, stream );
+        if ( FT_ERROR_BASE( error3 ) == FT_Err_Unimplemented_Feature )
+          goto Fail;
+
+        error = error3;
+        if ( error )
+          goto Fail;
+
+        face->gzip_source = stream;
+        pcfface->stream   = &face->gzip_stream;
+
+        stream = pcfface->stream;
+
+        error = pcf_load_font( stream, face );
+        if ( error )
+          goto Fail;
+      }
+#else
+        goto Fail;
+#endif
+      else
+      {
+        face->gzip_source = stream;
+        pcfface->stream   = &face->gzip_stream;
+
+        stream = pcfface->stream;
+
+        error = pcf_load_font( stream, face );
+        if ( error )
+          goto Fail;
+      }
+    }
+
+    /* set up charmap */
+    {
+      FT_String  *charset_registry = face->charset_registry;
+      FT_String  *charset_encoding = face->charset_encoding;
+      FT_Bool     unicode_charmap  = 0;
+
+
+      if ( charset_registry && charset_encoding )
+      {
+        char*  s = charset_registry;
+
+
+        /* Uh, oh, compare first letters manually to avoid dependency
+           on locales. */
+        if ( ( s[0] == 'i' || s[0] == 'I' ) &&
+             ( s[1] == 's' || s[1] == 'S' ) &&
+             ( s[2] == 'o' || s[2] == 'O' ) )
+        {
+          s += 3;
+          if ( !ft_strcmp( s, "10646" )                      ||
+               ( !ft_strcmp( s, "8859" ) &&
+                 !ft_strcmp( face->charset_encoding, "1" ) ) )
+          unicode_charmap = 1;
+        }
+      }
+
+      {
+        FT_CharMapRec  charmap;
+
+
+        charmap.face        = FT_FACE( face );
+        charmap.encoding    = FT_ENCODING_NONE;
+        charmap.platform_id = 0;
+        charmap.encoding_id = 0;
+
+        if ( unicode_charmap )
+        {
+          charmap.encoding    = FT_ENCODING_UNICODE;
+          charmap.platform_id = 3;
+          charmap.encoding_id = 1;
+        }
+
+        error = FT_CMap_New( &pcf_cmap_class, NULL, &charmap, NULL );
+
+#if 0
+        /* Select default charmap */
+        if ( pcfface->num_charmaps )
+          pcfface->charmap = pcfface->charmaps[0];
+#endif
+      }
+    }
+
+  Exit:
+    return error;
+
+  Fail:
+    FT_TRACE2(( "[not a valid PCF file]\n" ));
+    PCF_Face_Done( pcfface );
+    error = PCF_Err_Unknown_File_Format;  /* error */
+    goto Exit;
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  PCF_Size_Select( FT_Size   size,
+                   FT_ULong  strike_index )
+  {
+    PCF_Accel  accel = &( (PCF_Face)size->face )->accel;
+
+
+    FT_Select_Metrics( size->face, strike_index );
+
+    size->metrics.ascender    =  accel->fontAscent << 6;
+    size->metrics.descender   = -accel->fontDescent << 6;
+    size->metrics.max_advance =  accel->maxbounds.characterWidth << 6;
+
+    return PCF_Err_Ok;
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  PCF_Size_Request( FT_Size          size,
+                    FT_Size_Request  req )
+  {
+    PCF_Face         face  = (PCF_Face)size->face;
+    FT_Bitmap_Size*  bsize = size->face->available_sizes;
+    FT_Error         error = PCF_Err_Invalid_Pixel_Size;
+    FT_Long          height;
+
+
+    height = FT_REQUEST_HEIGHT( req );
+    height = ( height + 32 ) >> 6;
+
+    switch ( req->type )
+    {
+    case FT_SIZE_REQUEST_TYPE_NOMINAL:
+      if ( height == ( ( bsize->y_ppem + 32 ) >> 6 ) )
+        error = PCF_Err_Ok;
+      break;
+
+    case FT_SIZE_REQUEST_TYPE_REAL_DIM:
+      if ( height == ( face->accel.fontAscent +
+                       face->accel.fontDescent ) )
+        error = PCF_Err_Ok;
+      break;
+
+    default:
+      error = PCF_Err_Unimplemented_Feature;
+      break;
+    }
+
+    if ( error )
+      return error;
+    else
+      return PCF_Size_Select( size, 0 );
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  PCF_Glyph_Load( FT_GlyphSlot  slot,
+                  FT_Size       size,
+                  FT_UInt       glyph_index,
+                  FT_Int32      load_flags )
+  {
+    PCF_Face    face   = (PCF_Face)FT_SIZE_FACE( size );
+    FT_Stream   stream;
+    FT_Error    error  = PCF_Err_Ok;
+    FT_Bitmap*  bitmap = &slot->bitmap;
+    PCF_Metric  metric;
+    int         bytes;
+
+    FT_UNUSED( load_flags );
+
+
+    FT_TRACE4(( "load_glyph %d ---", glyph_index ));
+
+    if ( !face || glyph_index >= (FT_UInt)face->root.num_glyphs )
+    {
+      error = PCF_Err_Invalid_Argument;
+      goto Exit;
+    }
+
+    stream = face->root.stream;
+
+    if ( glyph_index > 0 )
+      glyph_index--;
+
+    metric = face->metrics + glyph_index;
+
+    bitmap->rows       = metric->ascent + metric->descent;
+    bitmap->width      = metric->rightSideBearing - metric->leftSideBearing;
+    bitmap->num_grays  = 1;
+    bitmap->pixel_mode = FT_PIXEL_MODE_MONO;
+
+    FT_TRACE6(( "BIT_ORDER %d ; BYTE_ORDER %d ; GLYPH_PAD %d\n",
+                  PCF_BIT_ORDER( face->bitmapsFormat ),
+                  PCF_BYTE_ORDER( face->bitmapsFormat ),
+                  PCF_GLYPH_PAD( face->bitmapsFormat ) ));
+
+    switch ( PCF_GLYPH_PAD( face->bitmapsFormat ) )
+    {
+    case 1:
+      bitmap->pitch = ( bitmap->width + 7 ) >> 3;
+      break;
+
+    case 2:
+      bitmap->pitch = ( ( bitmap->width + 15 ) >> 4 ) << 1;
+      break;
+
+    case 4:
+      bitmap->pitch = ( ( bitmap->width + 31 ) >> 5 ) << 2;
+      break;
+
+    case 8:
+      bitmap->pitch = ( ( bitmap->width + 63 ) >> 6 ) << 3;
+      break;
+
+    default:
+      return PCF_Err_Invalid_File_Format;
+    }
+
+    /* XXX: to do: are there cases that need repadding the bitmap? */
+    bytes = bitmap->pitch * bitmap->rows;
+
+    error = ft_glyphslot_alloc_bitmap( slot, bytes );
+    if ( error )
+      goto Exit;
+
+    if ( FT_STREAM_SEEK( metric->bits )          ||
+         FT_STREAM_READ( bitmap->buffer, bytes ) )
+      goto Exit;
+
+    if ( PCF_BIT_ORDER( face->bitmapsFormat ) != MSBFirst )
+      BitOrderInvert( bitmap->buffer, bytes );
+
+    if ( ( PCF_BYTE_ORDER( face->bitmapsFormat ) !=
+           PCF_BIT_ORDER( face->bitmapsFormat )  ) )
+    {
+      switch ( PCF_SCAN_UNIT( face->bitmapsFormat ) )
+      {
+      case 1:
+        break;
+
+      case 2:
+        TwoByteSwap( bitmap->buffer, bytes );
+        break;
+
+      case 4:
+        FourByteSwap( bitmap->buffer, bytes );
+        break;
+      }
+    }
+
+    slot->format      = FT_GLYPH_FORMAT_BITMAP;
+    slot->bitmap_left = metric->leftSideBearing;
+    slot->bitmap_top  = metric->ascent;
+
+    slot->metrics.horiAdvance  = metric->characterWidth << 6;
+    slot->metrics.horiBearingX = metric->leftSideBearing << 6;
+    slot->metrics.horiBearingY = metric->ascent << 6;
+    slot->metrics.width        = ( metric->rightSideBearing -
+                                   metric->leftSideBearing ) << 6;
+    slot->metrics.height       = bitmap->rows << 6;
+
+    ft_synthesize_vertical_metrics( &slot->metrics,
+                                    ( face->accel.fontAscent +
+                                      face->accel.fontDescent ) << 6 );
+
+    FT_TRACE4(( " --- ok\n" ));
+
+  Exit:
+    return error;
+  }
+
+
+ /*
+  *
+  *  BDF SERVICE
+  *
+  */
+
+  static FT_Error
+  pcf_get_bdf_property( PCF_Face          face,
+                        const char*       prop_name,
+                        BDF_PropertyRec  *aproperty )
+  {
+    PCF_Property  prop;
+
+
+    prop = pcf_find_property( face, prop_name );
+    if ( prop != NULL )
+    {
+      if ( prop->isString )
+      {
+        aproperty->type   = BDF_PROPERTY_TYPE_ATOM;
+        aproperty->u.atom = prop->value.atom;
+      }
+      else
+      {
+        /* Apparently, the PCF driver loads all properties as signed integers!
+         * This really doesn't seem to be a problem, because this is
+         * sufficient for any meaningful values.
+         */
+        aproperty->type      = BDF_PROPERTY_TYPE_INTEGER;
+        aproperty->u.integer = prop->value.integer;
+      }
+      return 0;
+    }
+
+    return PCF_Err_Invalid_Argument;
+  }
+
+
+  static FT_Error
+  pcf_get_charset_id( PCF_Face      face,
+                      const char*  *acharset_encoding,
+                      const char*  *acharset_registry )
+  {
+    *acharset_encoding = face->charset_encoding;
+    *acharset_registry = face->charset_registry;
+
+    return 0;
+  }
+
+
+  static const FT_Service_BDFRec  pcf_service_bdf =
+  {
+    (FT_BDF_GetCharsetIdFunc)pcf_get_charset_id,
+    (FT_BDF_GetPropertyFunc) pcf_get_bdf_property
+  };
+
+
+ /*
+  *
+  *  SERVICE LIST
+  *
+  */
+
+  static const FT_ServiceDescRec  pcf_services[] =
+  {
+    { FT_SERVICE_ID_BDF,       &pcf_service_bdf },
+    { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_PCF },
+    { NULL, NULL }
+  };
+
+
+  FT_CALLBACK_DEF( FT_Module_Interface )
+  pcf_driver_requester( FT_Module    module,
+                        const char*  name )
+  {
+    FT_UNUSED( module );
+
+    return ft_service_list_lookup( pcf_services, name );
+  }
+
+
+  FT_CALLBACK_TABLE_DEF
+  const FT_Driver_ClassRec  pcf_driver_class =
+  {
+    {
+      FT_MODULE_FONT_DRIVER        |
+      FT_MODULE_DRIVER_NO_OUTLINES,
+      sizeof ( FT_DriverRec ),
+
+      "pcf",
+      0x10000L,
+      0x20000L,
+
+      0,
+
+      0,
+      0,
+      pcf_driver_requester
+    },
+
+    sizeof ( PCF_FaceRec ),
+    sizeof ( FT_SizeRec ),
+    sizeof ( FT_GlyphSlotRec ),
+
+    PCF_Face_Init,
+    PCF_Face_Done,
+    0,                      /* FT_Size_InitFunc */
+    0,                      /* FT_Size_DoneFunc */
+    0,                      /* FT_Slot_InitFunc */
+    0,                      /* FT_Slot_DoneFunc */
+
+#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
+    ft_stub_set_char_sizes,
+    ft_stub_set_pixel_sizes,
+#endif
+    PCF_Glyph_Load,
+
+    0,                      /* FT_Face_GetKerningFunc  */
+    0,                      /* FT_Face_AttachFunc      */
+    0,                      /* FT_Face_GetAdvancesFunc */
+
+    PCF_Size_Request,
+    PCF_Size_Select
+  };
+
+
+/* END */