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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:24 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:24 -0800 |
commit | ed49a886544c69b375cd7bce63e9ace9bfbad0e5 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /src/truetype/ttobjs.c | |
parent | b36db06baca4c030538565e01b8264971c9b69f8 (diff) | |
download | android_external_freetype-ed49a886544c69b375cd7bce63e9ace9bfbad0e5.tar.gz android_external_freetype-ed49a886544c69b375cd7bce63e9ace9bfbad0e5.tar.bz2 android_external_freetype-ed49a886544c69b375cd7bce63e9ace9bfbad0e5.zip |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'src/truetype/ttobjs.c')
-rw-r--r-- | src/truetype/ttobjs.c | 943 |
1 files changed, 0 insertions, 943 deletions
diff --git a/src/truetype/ttobjs.c b/src/truetype/ttobjs.c deleted file mode 100644 index 801559f..0000000 --- a/src/truetype/ttobjs.c +++ /dev/null @@ -1,943 +0,0 @@ -/***************************************************************************/ -/* */ -/* ttobjs.c */ -/* */ -/* Objects manager (body). */ -/* */ -/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007 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_DEBUG_H -#include FT_INTERNAL_CALC_H -#include FT_INTERNAL_STREAM_H -#include FT_TRUETYPE_IDS_H -#include FT_TRUETYPE_TAGS_H -#include FT_INTERNAL_SFNT_H - -#include "ttgload.h" -#include "ttpload.h" - -#include "tterrors.h" - -#ifdef TT_USE_BYTECODE_INTERPRETER -#include "ttinterp.h" -#endif - -#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING -#include FT_TRUETYPE_UNPATENTED_H -#endif - -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT -#include "ttgxvar.h" -#endif - - /*************************************************************************/ - /* */ - /* 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_ttobjs - - -#ifdef TT_USE_BYTECODE_INTERPRETER - - /*************************************************************************/ - /* */ - /* GLYPH ZONE FUNCTIONS */ - /* */ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_glyphzone_done */ - /* */ - /* <Description> */ - /* Deallocate a glyph zone. */ - /* */ - /* <Input> */ - /* zone :: A pointer to the target glyph zone. */ - /* */ - FT_LOCAL_DEF( void ) - tt_glyphzone_done( TT_GlyphZone zone ) - { - FT_Memory memory = zone->memory; - - - if ( memory ) - { - FT_FREE( zone->contours ); - FT_FREE( zone->tags ); - FT_FREE( zone->cur ); - FT_FREE( zone->org ); - FT_FREE( zone->orus ); - - zone->max_points = zone->n_points = 0; - zone->max_contours = zone->n_contours = 0; - zone->memory = NULL; - } - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_glyphzone_new */ - /* */ - /* <Description> */ - /* Allocate a new glyph zone. */ - /* */ - /* <Input> */ - /* memory :: A handle to the current memory object. */ - /* */ - /* maxPoints :: The capacity of glyph zone in points. */ - /* */ - /* maxContours :: The capacity of glyph zone in contours. */ - /* */ - /* <Output> */ - /* zone :: A pointer to the target glyph zone record. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_glyphzone_new( FT_Memory memory, - FT_UShort maxPoints, - FT_Short maxContours, - TT_GlyphZone zone ) - { - FT_Error error; - - - FT_MEM_ZERO( zone, sizeof ( *zone ) ); - zone->memory = memory; - - if ( FT_NEW_ARRAY( zone->org, maxPoints ) || - FT_NEW_ARRAY( zone->cur, maxPoints ) || - FT_NEW_ARRAY( zone->orus, maxPoints ) || - FT_NEW_ARRAY( zone->tags, maxPoints ) || - FT_NEW_ARRAY( zone->contours, maxContours ) ) - { - tt_glyphzone_done( zone ); - } - else - { - zone->max_points = maxPoints; - zone->max_contours = maxContours; - } - - return error; - } -#endif /* TT_USE_BYTECODE_INTERPRETER */ - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_face_init */ - /* */ - /* <Description> */ - /* Initialize a given TrueType face object. */ - /* */ - /* <Input> */ - /* stream :: The source font stream. */ - /* */ - /* face_index :: The index of the font face in the resource. */ - /* */ - /* num_params :: Number of additional generic parameters. Ignored. */ - /* */ - /* params :: Additional generic parameters. Ignored. */ - /* */ - /* <InOut> */ - /* face :: The newly built face object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_face_init( FT_Stream stream, - FT_Face ttface, /* TT_Face */ - FT_Int face_index, - FT_Int num_params, - FT_Parameter* params ) - { - FT_Error error; - FT_Library library; - SFNT_Service sfnt; - TT_Face face = (TT_Face)ttface; - - - library = face->root.driver->root.library; - sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" ); - if ( !sfnt ) - goto Bad_Format; - - /* create input stream from resource */ - if ( FT_STREAM_SEEK( 0 ) ) - goto Exit; - - /* check that we have a valid TrueType file */ - error = sfnt->init_face( stream, face, face_index, num_params, params ); - if ( error ) - goto Exit; - - /* We must also be able to accept Mac/GX fonts, as well as OT ones. */ - /* The 0x00020000 tag is completely undocumented; some fonts from */ - /* Arphic made for Chinese Windows 3.1 have this. */ - if ( face->format_tag != 0x00010000L && /* MS fonts */ - face->format_tag != 0x00020000L && /* CJK fonts for Win 3.1 */ - face->format_tag != TTAG_true ) /* Mac fonts */ - { - FT_TRACE2(( "[not a valid TTF font]\n" )); - goto Bad_Format; - } - -#ifdef TT_USE_BYTECODE_INTERPRETER - face->root.face_flags |= FT_FACE_FLAG_HINTER; -#endif - - /* If we are performing a simple font format check, exit immediately. */ - if ( face_index < 0 ) - return TT_Err_Ok; - - /* Load font directory */ - error = sfnt->load_face( stream, face, face_index, num_params, params ); - if ( error ) - goto Exit; - - error = tt_face_load_hdmx( face, stream ); - if ( error ) - goto Exit; - - if ( face->root.face_flags & FT_FACE_FLAG_SCALABLE ) - { - -#ifdef FT_CONFIG_OPTION_INCREMENTAL - - if ( !face->root.internal->incremental_interface ) - error = tt_face_load_loca( face, stream ); - if ( !error ) - error = tt_face_load_cvt( face, stream ); - if ( !error ) - error = tt_face_load_fpgm( face, stream ); - if ( !error ) - error = tt_face_load_prep( face, stream ); - -#else - - if ( !error ) - error = tt_face_load_loca( face, stream ); - if ( !error ) - error = tt_face_load_cvt( face, stream ); - if ( !error ) - error = tt_face_load_fpgm( face, stream ); - if ( !error ) - error = tt_face_load_prep( face, stream ); - -#endif - - } - -#if defined( TT_CONFIG_OPTION_UNPATENTED_HINTING ) && \ - !defined( TT_CONFIG_OPTION_BYTECODE_INTERPRETER ) - - { - FT_Bool unpatented_hinting; - int i; - - - /* Determine whether unpatented hinting is to be used for this face. */ - unpatented_hinting = FT_BOOL - ( library->debug_hooks[FT_DEBUG_HOOK_UNPATENTED_HINTING] != NULL ); - - for ( i = 0; i < num_params && !face->unpatented_hinting; i++ ) - if ( params[i].tag == FT_PARAM_TAG_UNPATENTED_HINTING ) - unpatented_hinting = TRUE; - - /* Compare the face with a list of well-known `tricky' fonts. */ - /* This list shall be expanded as we find more of them. */ - if ( !unpatented_hinting ) - { - static const char* const trick_names[] = - { - "DFKaiSho-SB", /* dfkaisb.ttf */ - "DFKai-SB", /* kaiu.ttf */ - "HuaTianSongTi?", /* htst3.ttf */ - "MingLiU", /* mingliu.ttf & mingliu.ttc */ - "PMingLiU", /* mingliu.ttc */ - "MingLi43", /* mingli.ttf */ - NULL - }; - int nn; - - - /* Note that we only check the face name at the moment; it might */ - /* be worth to do more checks for a few special cases. */ - for ( nn = 0; trick_names[nn] != NULL; nn++ ) - { - if ( ttface->family_name && - ft_strstr( ttface->family_name, trick_names[nn] ) ) - { - unpatented_hinting = 1; - break; - } - } - } - - ttface->internal->ignore_unpatented_hinter = - FT_BOOL( !unpatented_hinting ); - } - -#endif /* TT_CONFIG_OPTION_UNPATENTED_HINTING && - !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ - - /* initialize standard glyph loading routines */ - TT_Init_Glyph_Loading( face ); - - Exit: - return error; - - Bad_Format: - error = TT_Err_Unknown_File_Format; - goto Exit; - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_face_done */ - /* */ - /* <Description> */ - /* Finalize a given face object. */ - /* */ - /* <Input> */ - /* face :: A pointer to the face object to destroy. */ - /* */ - FT_LOCAL_DEF( void ) - tt_face_done( FT_Face ttface ) /* TT_Face */ - { - TT_Face face = (TT_Face)ttface; - FT_Memory memory = face->root.memory; - FT_Stream stream = face->root.stream; - - SFNT_Service sfnt = (SFNT_Service)face->sfnt; - - - /* for `extended TrueType formats' (i.e. compressed versions) */ - if ( face->extra.finalizer ) - face->extra.finalizer( face->extra.data ); - - if ( sfnt ) - sfnt->done_face( face ); - - /* freeing the locations table */ - tt_face_done_loca( face ); - - tt_face_free_hdmx( face ); - - /* freeing the CVT */ - FT_FREE( face->cvt ); - face->cvt_size = 0; - - /* freeing the programs */ - FT_FRAME_RELEASE( face->font_program ); - FT_FRAME_RELEASE( face->cvt_program ); - face->font_program_size = 0; - face->cvt_program_size = 0; - -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - tt_done_blend( memory, face->blend ); - face->blend = NULL; -#endif - } - - - /*************************************************************************/ - /* */ - /* SIZE FUNCTIONS */ - /* */ - /*************************************************************************/ - -#ifdef TT_USE_BYTECODE_INTERPRETER - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_size_run_fpgm */ - /* */ - /* <Description> */ - /* Run the font program. */ - /* */ - /* <Input> */ - /* size :: A handle to the size object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_size_run_fpgm( TT_Size size ) - { - TT_Face face = (TT_Face)size->root.face; - TT_ExecContext exec; - FT_Error error; - - - /* debugging instances have their own context */ - if ( size->debug ) - exec = size->context; - else - exec = ( (TT_Driver)FT_FACE_DRIVER( face ) )->context; - - if ( !exec ) - return TT_Err_Could_Not_Find_Context; - - TT_Load_Context( exec, face, size ); - - exec->callTop = 0; - exec->top = 0; - - exec->period = 64; - exec->phase = 0; - exec->threshold = 0; - - exec->instruction_trap = FALSE; - exec->F_dot_P = 0x10000L; - - { - FT_Size_Metrics* metrics = &exec->metrics; - TT_Size_Metrics* tt_metrics = &exec->tt_metrics; - - - metrics->x_ppem = 0; - metrics->y_ppem = 0; - metrics->x_scale = 0; - metrics->y_scale = 0; - - tt_metrics->ppem = 0; - tt_metrics->scale = 0; - tt_metrics->ratio = 0x10000L; - } - - /* allow font program execution */ - TT_Set_CodeRange( exec, - tt_coderange_font, - face->font_program, - face->font_program_size ); - - /* disable CVT and glyph programs coderange */ - TT_Clear_CodeRange( exec, tt_coderange_cvt ); - TT_Clear_CodeRange( exec, tt_coderange_glyph ); - - if ( face->font_program_size > 0 ) - { - error = TT_Goto_CodeRange( exec, tt_coderange_font, 0 ); - - if ( !error ) - error = face->interpreter( exec ); - } - else - error = TT_Err_Ok; - - if ( !error ) - TT_Save_Context( exec, size ); - - return error; - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_size_run_prep */ - /* */ - /* <Description> */ - /* Run the control value program. */ - /* */ - /* <Input> */ - /* size :: A handle to the size object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_size_run_prep( TT_Size size ) - { - TT_Face face = (TT_Face)size->root.face; - TT_ExecContext exec; - FT_Error error; - - - /* debugging instances have their own context */ - if ( size->debug ) - exec = size->context; - else - exec = ( (TT_Driver)FT_FACE_DRIVER( face ) )->context; - - if ( !exec ) - return TT_Err_Could_Not_Find_Context; - - TT_Load_Context( exec, face, size ); - - exec->callTop = 0; - exec->top = 0; - - exec->instruction_trap = FALSE; - - TT_Set_CodeRange( exec, - tt_coderange_cvt, - face->cvt_program, - face->cvt_program_size ); - - TT_Clear_CodeRange( exec, tt_coderange_glyph ); - - if ( face->cvt_program_size > 0 ) - { - error = TT_Goto_CodeRange( exec, tt_coderange_cvt, 0 ); - - if ( !error && !size->debug ) - error = face->interpreter( exec ); - } - else - error = TT_Err_Ok; - - /* save as default graphics state */ - size->GS = exec->GS; - - TT_Save_Context( exec, size ); - - return error; - } - -#endif /* TT_USE_BYTECODE_INTERPRETER */ - - -#ifdef TT_USE_BYTECODE_INTERPRETER - - static void - tt_size_done_bytecode( FT_Size ftsize ) - { - TT_Size size = (TT_Size)ftsize; - TT_Face face = (TT_Face)ftsize->face; - FT_Memory memory = face->root.memory; - - - if ( size->debug ) - { - /* the debug context must be deleted by the debugger itself */ - size->context = NULL; - size->debug = FALSE; - } - - FT_FREE( size->cvt ); - size->cvt_size = 0; - - /* free storage area */ - FT_FREE( size->storage ); - size->storage_size = 0; - - /* twilight zone */ - tt_glyphzone_done( &size->twilight ); - - FT_FREE( size->function_defs ); - FT_FREE( size->instruction_defs ); - - size->num_function_defs = 0; - size->max_function_defs = 0; - size->num_instruction_defs = 0; - size->max_instruction_defs = 0; - - size->max_func = 0; - size->max_ins = 0; - - size->bytecode_ready = 0; - size->cvt_ready = 0; - } - - - /* Initialize bytecode-related fields in the size object. */ - /* We do this only if bytecode interpretation is really needed. */ - static FT_Error - tt_size_init_bytecode( FT_Size ftsize ) - { - FT_Error error; - TT_Size size = (TT_Size)ftsize; - TT_Face face = (TT_Face)ftsize->face; - FT_Memory memory = face->root.memory; - FT_Int i; - - FT_UShort n_twilight; - TT_MaxProfile* maxp = &face->max_profile; - - - size->bytecode_ready = 1; - size->cvt_ready = 0; - - size->max_function_defs = maxp->maxFunctionDefs; - size->max_instruction_defs = maxp->maxInstructionDefs; - - size->num_function_defs = 0; - size->num_instruction_defs = 0; - - size->max_func = 0; - size->max_ins = 0; - - size->cvt_size = face->cvt_size; - size->storage_size = maxp->maxStorage; - - /* Set default metrics */ - { - FT_Size_Metrics* metrics = &size->metrics; - TT_Size_Metrics* metrics2 = &size->ttmetrics; - - metrics->x_ppem = 0; - metrics->y_ppem = 0; - - metrics2->rotated = FALSE; - metrics2->stretched = FALSE; - - /* set default compensation (all 0) */ - for ( i = 0; i < 4; i++ ) - metrics2->compensations[i] = 0; - } - - /* allocate function defs, instruction defs, cvt, and storage area */ - if ( FT_NEW_ARRAY( size->function_defs, size->max_function_defs ) || - FT_NEW_ARRAY( size->instruction_defs, size->max_instruction_defs ) || - FT_NEW_ARRAY( size->cvt, size->cvt_size ) || - FT_NEW_ARRAY( size->storage, size->storage_size ) ) - goto Exit; - - /* reserve twilight zone */ - n_twilight = maxp->maxTwilightPoints; - - /* there are 4 phantom points (do we need this?) */ - n_twilight += 4; - - error = tt_glyphzone_new( memory, n_twilight, 0, &size->twilight ); - if ( error ) - goto Exit; - - size->twilight.n_points = n_twilight; - - size->GS = tt_default_graphics_state; - - /* set `face->interpreter' according to the debug hook present */ - { - FT_Library library = face->root.driver->root.library; - - - face->interpreter = (TT_Interpreter) - library->debug_hooks[FT_DEBUG_HOOK_TRUETYPE]; - if ( !face->interpreter ) - face->interpreter = (TT_Interpreter)TT_RunIns; - } - - /* Fine, now run the font program! */ - error = tt_size_run_fpgm( size ); - - Exit: - if ( error ) - tt_size_done_bytecode( ftsize ); - - return error; - } - - - FT_LOCAL_DEF( FT_Error ) - tt_size_ready_bytecode( TT_Size size ) - { - FT_Error error = TT_Err_Ok; - - - if ( !size->bytecode_ready ) - { - error = tt_size_init_bytecode( (FT_Size)size ); - if ( error ) - goto Exit; - } - - /* rescale CVT when needed */ - if ( !size->cvt_ready ) - { - FT_UInt i; - TT_Face face = (TT_Face) size->root.face; - - - /* Scale the cvt values to the new ppem. */ - /* We use by default the y ppem to scale the CVT. */ - for ( i = 0; i < size->cvt_size; i++ ) - size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale ); - - /* all twilight points are originally zero */ - for ( i = 0; i < (FT_UInt)size->twilight.n_points; i++ ) - { - size->twilight.org[i].x = 0; - size->twilight.org[i].y = 0; - size->twilight.cur[i].x = 0; - size->twilight.cur[i].y = 0; - } - - /* clear storage area */ - for ( i = 0; i < (FT_UInt)size->storage_size; i++ ) - size->storage[i] = 0; - - size->GS = tt_default_graphics_state; - - error = tt_size_run_prep( size ); - if ( !error ) - size->cvt_ready = 1; - } - - Exit: - return error; - } - -#endif /* TT_USE_BYTECODE_INTERPRETER */ - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_size_init */ - /* */ - /* <Description> */ - /* Initialize a new TrueType size object. */ - /* */ - /* <InOut> */ - /* size :: A handle to the size object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_size_init( FT_Size ttsize ) /* TT_Size */ - { - TT_Size size = (TT_Size)ttsize; - FT_Error error = TT_Err_Ok; - -#ifdef TT_USE_BYTECODE_INTERPRETER - size->bytecode_ready = 0; - size->cvt_ready = 0; -#endif - - size->ttmetrics.valid = FALSE; - size->strike_index = 0xFFFFFFFFUL; - - return error; - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_size_done */ - /* */ - /* <Description> */ - /* The TrueType size object finalizer. */ - /* */ - /* <Input> */ - /* size :: A handle to the target size object. */ - /* */ - FT_LOCAL_DEF( void ) - tt_size_done( FT_Size ttsize ) /* TT_Size */ - { - TT_Size size = (TT_Size)ttsize; - - -#ifdef TT_USE_BYTECODE_INTERPRETER - if ( size->bytecode_ready ) - tt_size_done_bytecode( ttsize ); -#endif - - size->ttmetrics.valid = FALSE; - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_size_reset */ - /* */ - /* <Description> */ - /* Reset a TrueType size when resolutions and character dimensions */ - /* have been changed. */ - /* */ - /* <Input> */ - /* size :: A handle to the target size object. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_size_reset( TT_Size size ) - { - TT_Face face; - FT_Error error = TT_Err_Ok; - FT_Size_Metrics* metrics; - - - size->ttmetrics.valid = FALSE; - - face = (TT_Face)size->root.face; - - metrics = &size->metrics; - - /* copy the result from base layer */ - *metrics = size->root.metrics; - - if ( metrics->x_ppem < 1 || metrics->y_ppem < 1 ) - return TT_Err_Invalid_PPem; - - /* This bit flag, if set, indicates that the ppems must be */ - /* rounded to integers. Nearly all TrueType fonts have this bit */ - /* set, as hinting won't work really well otherwise. */ - /* */ - if ( face->header.Flags & 8 ) - { - metrics->x_scale = FT_DivFix( metrics->x_ppem << 6, - face->root.units_per_EM ); - metrics->y_scale = FT_DivFix( metrics->y_ppem << 6, - face->root.units_per_EM ); - - metrics->ascender = - FT_PIX_ROUND( FT_MulFix( face->root.ascender, metrics->y_scale ) ); - metrics->descender = - FT_PIX_ROUND( FT_MulFix( face->root.descender, metrics->y_scale ) ); - metrics->height = - FT_PIX_ROUND( FT_MulFix( face->root.height, metrics->y_scale ) ); - metrics->max_advance = - FT_PIX_ROUND( FT_MulFix( face->root.max_advance_width, - metrics->x_scale ) ); - } - - /* compute new transformation */ - if ( metrics->x_ppem >= metrics->y_ppem ) - { - size->ttmetrics.scale = metrics->x_scale; - size->ttmetrics.ppem = metrics->x_ppem; - size->ttmetrics.x_ratio = 0x10000L; - size->ttmetrics.y_ratio = FT_MulDiv( metrics->y_ppem, - 0x10000L, - metrics->x_ppem ); - } - else - { - size->ttmetrics.scale = metrics->y_scale; - size->ttmetrics.ppem = metrics->y_ppem; - size->ttmetrics.x_ratio = FT_MulDiv( metrics->x_ppem, - 0x10000L, - metrics->y_ppem ); - size->ttmetrics.y_ratio = 0x10000L; - } - -#ifdef TT_USE_BYTECODE_INTERPRETER - size->cvt_ready = 0; -#endif /* TT_USE_BYTECODE_INTERPRETER */ - - if ( !error ) - size->ttmetrics.valid = TRUE; - - return error; - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_driver_init */ - /* */ - /* <Description> */ - /* Initialize a given TrueType driver object. */ - /* */ - /* <Input> */ - /* driver :: A handle to the target driver object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_driver_init( FT_Module ttdriver ) /* TT_Driver */ - { - -#ifdef TT_USE_BYTECODE_INTERPRETER - - TT_Driver driver = (TT_Driver)ttdriver; - - - if ( !TT_New_Context( driver ) ) - return TT_Err_Could_Not_Find_Context; - -#else - - FT_UNUSED( ttdriver ); - -#endif - - return TT_Err_Ok; - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_driver_done */ - /* */ - /* <Description> */ - /* Finalize a given TrueType driver. */ - /* */ - /* <Input> */ - /* driver :: A handle to the target TrueType driver. */ - /* */ - FT_LOCAL_DEF( void ) - tt_driver_done( FT_Module ttdriver ) /* TT_Driver */ - { -#ifdef TT_USE_BYTECODE_INTERPRETER - TT_Driver driver = (TT_Driver)ttdriver; - - - /* destroy the execution context */ - if ( driver->context ) - { - TT_Done_Context( driver->context ); - driver->context = NULL; - } -#else - FT_UNUSED( ttdriver ); -#endif - - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_slot_init */ - /* */ - /* <Description> */ - /* Initialize a new slot object. */ - /* */ - /* <InOut> */ - /* slot :: A handle to the slot object. */ - /* */ - /* <Return> */ - /* FreeType error code. 0 means success. */ - /* */ - FT_LOCAL_DEF( FT_Error ) - tt_slot_init( FT_GlyphSlot slot ) - { - return FT_GlyphLoader_CreateExtra( slot->internal->loader ); - } - - -/* END */ |