diff options
Diffstat (limited to 'src/3rdparty/freetype/src/pfr/pfrsbit.c')
| -rw-r--r-- | src/3rdparty/freetype/src/pfr/pfrsbit.c | 67 |
1 files changed, 36 insertions, 31 deletions
diff --git a/src/3rdparty/freetype/src/pfr/pfrsbit.c b/src/3rdparty/freetype/src/pfr/pfrsbit.c index ba909ddca7..46a988e8e3 100644 --- a/src/3rdparty/freetype/src/pfr/pfrsbit.c +++ b/src/3rdparty/freetype/src/pfr/pfrsbit.c @@ -1,30 +1,30 @@ -/***************************************************************************/ -/* */ -/* pfrsbit.c */ -/* */ -/* FreeType PFR bitmap loader (body). */ -/* */ -/* Copyright 2002-2018 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. */ -/* */ -/***************************************************************************/ +/**************************************************************************** + * + * pfrsbit.c + * + * FreeType PFR bitmap loader (body). + * + * Copyright (C) 2002-2023 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 "pfrsbit.h" #include "pfrload.h" -#include FT_INTERNAL_DEBUG_H -#include FT_INTERNAL_STREAM_H +#include <freetype/internal/ftdebug.h> +#include <freetype/internal/ftstream.h> #include "pfrerror.h" #undef FT_COMPONENT -#define FT_COMPONENT trace_pfr +#define FT_COMPONENT pfr /*************************************************************************/ @@ -282,7 +282,7 @@ FT_ULong* found_offset, FT_ULong* found_size ) { - FT_UInt min, max, char_len; + FT_UInt min, max, mid, char_len; FT_Bool two = FT_BOOL( *flags & PFR_BITMAP_2BYTE_CHARCODE ); FT_Byte* buff; @@ -310,8 +310,8 @@ if ( lim > limit ) { FT_TRACE0(( "pfr_lookup_bitmap_data:" - " number of bitmap records too large,\n" - " " + " number of bitmap records too large,\n" )); + FT_TRACE0(( " " " thus ignoring all bitmaps in this strike\n" )); *flags &= ~PFR_BITMAP_VALID_CHARCODES; } @@ -328,8 +328,8 @@ if ( (FT_Long)code <= prev_code ) { FT_TRACE0(( "pfr_lookup_bitmap_data:" - " bitmap records are not sorted,\n" - " " + " bitmap records are not sorted,\n" )); + FT_TRACE0(( " " " thus ignoring all bitmaps in this strike\n" )); *flags &= ~PFR_BITMAP_VALID_CHARCODES; break; @@ -349,14 +349,14 @@ min = 0; max = count; + mid = min + ( max - min ) / 2; /* binary search */ while ( min < max ) { - FT_UInt mid, code; + FT_UInt code; - mid = ( min + max ) >> 1; buff = base + mid * char_len; if ( two ) @@ -370,6 +370,11 @@ min = mid + 1; else goto Found_It; + + /* reasonable prediction in a continuous block */ + mid += char_code - code; + if ( mid >= max || mid < min ) + mid = min + ( max - min ) / 2; } Fail: @@ -391,7 +396,7 @@ } - /* load bitmap metrics. `*padvance' must be set to the default value */ + /* load bitmap metrics. `*aadvance' must be set to the default value */ /* before calling this function */ /* */ static FT_Error @@ -575,7 +580,7 @@ /*************************************************************************/ /*************************************************************************/ - FT_LOCAL( FT_Error ) + FT_LOCAL_DEF( FT_Error ) pfr_slot_load_bitmap( PFR_Slot glyph, PFR_Size size, FT_UInt glyph_index, @@ -628,7 +633,7 @@ if ( strike->flags & PFR_BITMAP_3BYTE_OFFSET ) char_len += 1; - /* access data directly in the frame to speed lookups */ + /* access data directly in the frame to speed up lookups */ if ( FT_STREAM_SEEK( phys->bct_offset + strike->bct_offset ) || FT_FRAME_ENTER( char_len * strike->num_bitmaps ) ) goto Exit; @@ -744,8 +749,8 @@ ypos > FT_INT_MAX - (FT_Long)ysize || ypos + (FT_Long)ysize < FT_INT_MIN ) { - FT_TRACE1(( "pfr_slot_load_bitmap:" )); - FT_TRACE1(( "huge bitmap glyph %dx%d over FT_GlyphSlot\n", + FT_TRACE1(( "pfr_slot_load_bitmap:" + " huge bitmap glyph %ldx%ld over FT_GlyphSlot\n", xpos, ypos )); error = FT_THROW( Invalid_Pixel_Size ); } |