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Code Issues 4 Releases Wiki Activity

* src/truetype/ttobjs.h, src/truetype/ttobjs.c, 

src/truetype/ttgload.c: do not allocate interpreter-specific
	tables in memory if we're not going to load glyphs with it
	anyway.
This commit is contained in:
David Turner 2007-01-05 15:32:01 +00:00
parent 4a89bb9a13
commit 384be23418
4 changed files with 165 additions and 95 deletions
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5
ChangeLog
View File

@ -1,5 +1,10 @@
2007-01-04 David Turner <david@freetype.org>
* src/truetype/ttobjs.h, src/truetype/ttobjs.c,
src/truetype/ttgload.c: do not allocate interpreter-specific
tables in memory if we're not going to load glyphs with it
anyway.
* src/sfnt/ttmtx.c, include/freetype/internal/tttypes.h:
don't extract the metrics table from the SFNT font file.
Instead, reparse it on each glyph load, since the runtime

8
src/truetype/ttgload.c
View File

@ -1718,11 +1718,19 @@
#ifdef TT_USE_BYTECODE_INTERPRETER
/* load execution context */
if ( IS_HINTED( load_flags ) )
{
TT_ExecContext exec;
FT_Bool grayscale;
if ( !size->cvt_ready )
{
FT_Error error = tt_size_ready_bytecode( size );
if ( error )
return error;
}
/* query new execution context */
exec = size->debug ? size->context
: ( (TT_Driver)FT_FACE_DRIVER( face ) )->context;

241
src/truetype/ttobjs.c
View File

@ -519,29 +519,58 @@
#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
TT_Face face = (TT_Face)size->root.face;
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,
* should only be needed when 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;
@ -549,6 +578,9 @@
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;
@ -583,11 +615,7 @@
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 ) )
{
tt_size_done( ttsize );
return error;
}
goto Exit;
/* reserve twilight zone */
n_twilight = maxp->maxTwilightPoints;
@ -597,11 +625,7 @@
error = tt_glyphzone_new( memory, n_twilight, 0, &size->twilight );
if ( error )
{
tt_size_done( ttsize );
return error;
}
goto Exit;
size->twilight.n_points = n_twilight;
@ -621,10 +645,95 @@
/* Fine, now run the font program! */
error = tt_size_run_fpgm( size );
if ( error )
tt_size_done( ttsize );
Exit:
if (error)
tt_size_done_bytecode( ftsize );
#endif /* TT_USE_BYTECODE_INTERPRETER */
return error;
}
FT_LOCAL_DEF( FT_Error )
tt_size_ready_bytecode( TT_Size size )
{
FT_Error error = 0;
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 );
}
Exit:
return error;
}
#else /* !TT_USE_BYTECODE_INTERPRETER */
FT_LOCAL_DEF( FT_Error )
tt_size_ready_bytecode( TT_Size size )
{
FT_UNUSED(ftsize);
return 0;
}
#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;
@ -650,38 +759,8 @@
TT_Size size = (TT_Size)ttsize;
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_Memory memory = size->root.face->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;
if ( size->bytecode_ready )
tt_size_done_bytecode( ttsize );
#endif
size->ttmetrics.valid = FALSE;
@ -762,36 +841,8 @@
size->ttmetrics.y_ratio = 0x10000L;
}
#ifdef TT_USE_BYTECODE_INTERPRETER
{
FT_UInt i;
/* 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 );
}
size->cvt_ready = 0;
#endif /* TT_USE_BYTECODE_INTERPRETER */
if ( !error )

6
src/truetype/ttobjs.h
View File

@ -358,6 +358,9 @@ FT_BEGIN_HEADER
FT_Bool debug;
TT_ExecContext context;
FT_Bool bytecode_ready;
FT_Bool cvt_ready;
#endif /* TT_USE_BYTECODE_INTERPRETER */
} TT_SizeRec;
@ -425,6 +428,9 @@ FT_BEGIN_HEADER
FT_LOCAL( FT_Error )
tt_size_reset( TT_Size size );
FT_LOCAL( FT_Error )
tt_size_ready_bytecode( TT_Size size );
/*************************************************************************/
/* */