Extend/modify FAPI for use by PDLs other than PS/PDF.

All languages take a -dDisableFAPI option which reverts to the AFS code.

On Unuix type systems
./configure --disable-fapi

and on Windows, adding "FT_BRIDGE=0"

create builds without the FAPI font handling.

Both of these will be removed as the FAPI code matures.

Move Font API from psi into base.

Split the FAPI functions into the interpreter dependent ones, and the "core"
functions. Move the core functions into the graphics library.

Change fapi.dev to fapi_ps.dev

Since the old fapi.dev is now split into core and PS dependent parts, the
old fapi.dev gets renamed as fapi_ps.dev

Basic TrueType support thru FAPI for pcl and pxl.

Doesn't include artificial boldening.

Basic FAPI functions working with XPS interpreter.

(Mostly) Make PCL/UFST work through gs_fapi API

Bug 693188: don't skip glyphs with degenerate matrices

In commit 752397ab, the fix for Bug 692263 was to skip over glyphs when the
matrix in force for the glyph had a zero scale in either dimension.

It seems that this approach had potentially unfavourable side effects in the
glyph cache.

So, when we encounter a degenerate matrix rendering a glyph, we now force a
minimal, non-zero scale before attempting to render the glyph. This placates
the glyph cache.

Cluster testing shows (tiny) progressions in Bug689006.pdf, Bug690179.pdf,
and Bug692634.ps, and pixel differences, not identifiable as progressions
or regressions in Bug690497.pdf and 12-07C.PS.

Conflicts:

	gs/psi/fapiufst.c
	gs/psi/ifapi.h
	gs/psi/zfapi.c

Revise gs_fapi_available and zFAPIavailable so they can check for
a specific fapi server being available (as well as just fapi itself being
available.

Tidy up header includes, and header dependencies.

Typos, warnings and dependency mistakes.

Handle FAPI having no servers gracefully in PCL and XPS

Use existing API to retrieve glyph metrics.

Fix some PCL/PXL spacing problems.

Improve handling of notdefs in PCL/PXL

Some reformatting.

Update fapi call in xps and fix some merge mistakes.

Change gs_fapi_do_char() parameters to gs_glyph and gs_char types.

Handle GS_NO_CHAR value better.

Remove deprecated char_code entry

Provide method for client to request ttf cmap in fapi.

Skip "unencodable" glyphs (that is character codes whose "decoding" results
in a gs_no_glyph glyph value).

Fix (finally, I think) the PCL notdef problems, and PCL text orientation.

Also, a GL spacing problem. Amend the Postscript size to work with these
changes.

FAPI API and warnings clean up.

Identify glyph index or otherwise....

...in the FAPI PS world.

fix a missing dependency

Include stdint_.h in gxfapi.h....

so int64_t is available. Add dependency.

Fix typo in dependency.

Changes to build gs_fapi on Windows.

Fix a typo

<sigh> another "notdef" handling revision

Add PCL/XL glyph boldening (bitmap smearing) to FAPI.

Remove some debug code accidentally left in.

Provide a "-dDisableFAPI" command line option for pcl/pxl/xps.

It's added in a very noddy way for two reasons: it needs acted upon
before the interpreter is initialised, and second to make it more
obvious to remove when we've gained confidence in the new fapi code.

Split fapi server builds out of lib.mak and into separate makefiles.

Add one commercial server build to the Ghostscript/GhostPDL build system, so
it no longer needs built separately.

Also fix a couple of dependency typos/errors.

Some tweaks to get the build changes working on Windows

Delete makefile....

Revise build changes.

Cluster differences in every PCL/PXL/XPS file with text display in a Truetype/Opentype font (including CFF).

1 files changed, 1 insertions, 220 deletions

diff --git a/gs/psi/ifapi.h b/gs/psi/ifapi.h
index a13c42afe..104466e19 100644
--- a/gs/psi/ifapi.h
+++ b/gs/psi/ifapi.h
@@ -25,225 +25,6 @@
 #include "memory_.h"
 #include "gp.h"
 
-typedef int FracInt; /* A fractional integer with statically unknown number of fraction bits.
-                        The number of bits depends on plugin and is being specified in
-                        FAPI_server::frac_shift.
-                     */
-typedef int FAPI_retcode;
-
-typedef enum {
-    FAPI_FONT_FEATURE_FontMatrix,
-    FAPI_FONT_FEATURE_UniqueID,
-    FAPI_FONT_FEATURE_BlueScale,
-    FAPI_FONT_FEATURE_Weight,
-    FAPI_FONT_FEATURE_ItalicAngle,
-    FAPI_FONT_FEATURE_IsFixedPitch,
-    FAPI_FONT_FEATURE_UnderLinePosition,
-    FAPI_FONT_FEATURE_UnderlineThickness,
-    FAPI_FONT_FEATURE_FontType,
-    FAPI_FONT_FEATURE_FontBBox,
-    FAPI_FONT_FEATURE_BlueValues_count,
-    FAPI_FONT_FEATURE_BlueValues,
-    FAPI_FONT_FEATURE_OtherBlues_count,
-    FAPI_FONT_FEATURE_OtherBlues,
-    FAPI_FONT_FEATURE_FamilyBlues_count,
-    FAPI_FONT_FEATURE_FamilyBlues,
-    FAPI_FONT_FEATURE_FamilyOtherBlues_count,
-    FAPI_FONT_FEATURE_FamilyOtherBlues,
-    FAPI_FONT_FEATURE_BlueShift,
-    FAPI_FONT_FEATURE_BlueFuzz,
-    FAPI_FONT_FEATURE_StdHW,
-    FAPI_FONT_FEATURE_StdVW,
-    FAPI_FONT_FEATURE_StemSnapH_count,
-    FAPI_FONT_FEATURE_StemSnapH,
-    FAPI_FONT_FEATURE_StemSnapV_count,
-    FAPI_FONT_FEATURE_StemSnapV,
-    FAPI_FONT_FEATURE_ForceBold,
-    FAPI_FONT_FEATURE_LanguageGroup,
-    FAPI_FONT_FEATURE_lenIV,
-    FAPI_FONT_FEATURE_GlobalSubrs_count,
-    FAPI_FONT_FEATURE_Subrs_count,
-    FAPI_FONT_FEATURE_Subrs_total_size,
-    FAPI_FONT_FEATURE_TT_size,
-    /* Multiple Master specifics */
-    FAPI_FONT_FEATURE_DollarBlend,
-    FAPI_FONT_FEATURE_DollarBlend_length,
-    FAPI_FONT_FEATURE_BlendAxisTypes_count,
-    FAPI_FONT_FEATURE_BlendAxisTypes,
-    FAPI_FONT_FEATURE_BlendPrivate_count,
-    FAPI_FONT_FEATURE_BlendFontInfo_count,
-    FAPI_FONT_FEATURE_WeightVector_count,
-    FAPI_FONT_FEATURE_WeightVector,
-    FAPI_FONT_FEATURE_BlendDesignPositionsArrays_count,
-    FAPI_FONT_FEATURE_BlendDesignPositionsArrayValue,
-    FAPI_FONT_FEATURE_BlendDesignMapArrays_count,
-    FAPI_FONT_FEATURE_BlendDesignMapSubArrays_count,
-    FAPI_FONT_FEATURE_BlendDesignMapArrayValue,
-    /* End MM specifics */
-    /* CharString emission */
-    FAPI_FONT_FEATURE_CharStrings_count,
-    /* End CharString emission */
-} fapi_font_feature;
-
-typedef enum {
-  FAPI_METRICS_NOTDEF,
-  FAPI_METRICS_ADD, /* Add to native glyph width. */
-  FAPI_METRICS_REPLACE_WIDTH, /* Replace the native glyph width. */
-  FAPI_METRICS_REPLACE /* Replace the native glyph width and lsb. */
-} FAPI_metrics_type;
-
-typedef struct {
-    int char_code;        /* Backwards compatibility. Depricated. */
-    int client_char_code; /* Debug purpose. */
-    int char_codes[4];
-    int char_codes_count;
-    bool is_glyph_index; /* true if char_code contains glyph index */
-    const unsigned char *char_name; /* to be used exclusively with char_code. */
-    unsigned int char_name_length;
-    FAPI_metrics_type metrics_type;
-    FracInt sb_x, sb_y, aw_x, aw_y; /* replaced PS metrics. */
-    int metrics_scale; /* Scale for replaced PS metrics.
-                          Zero means "em box size". */
-} FAPI_char_ref;
-
-typedef struct FAPI_font_s FAPI_font;
-struct FAPI_font_s {
-    /* server's data : */
-    void *server_font_data;
-    bool need_decrypt;
-    /* client's data : */
-    const gs_memory_t *memory;
-    const char *font_file_path;
-    int subfont;
-    bool is_type1; /* Only for non-disk fonts; dirty for disk fonts. */
-    bool is_cid;
-    bool is_outline_font;
-    bool is_mtx_skipped; /* Ugly. Only UFST needs. */
-    bool is_vertical;
-    void *client_ctx_p;
-    void *client_font_data;
-    void *client_font_data2;
-    const void *char_data;
-    int char_data_len;
-    unsigned short (*get_word )(FAPI_font *ff, fapi_font_feature var_id, int index);
-    unsigned long  (*get_long )(FAPI_font *ff, fapi_font_feature var_id, int index);
-    float          (*get_float)(FAPI_font *ff, fapi_font_feature var_id, int index);
-    int            (*get_name) (FAPI_font *ff, fapi_font_feature var_id, int index, char *buffer, int len);
-    int		   (*get_proc) (FAPI_font *ff, fapi_font_feature var_id, int index, char *Buffer);
-    unsigned short (*get_gsubr)(FAPI_font *ff, int index,     byte *buf, ushort buf_length);
-    unsigned short (*get_subr) (FAPI_font *ff, int index,     byte *buf, ushort buf_length);
-    unsigned short (*get_raw_subr) (FAPI_font *ff, int index,     byte *buf, ushort buf_length);
-    int		   (*get_glyph)(FAPI_font *ff, int char_code, byte *buf, ushort buf_length);
-    unsigned short (*serialize_tt_font)(FAPI_font *ff, void *buf, int buf_size);
-    unsigned short (*get_charstring) (FAPI_font *ff, int index,     byte *buf, ushort buf_length);
-    unsigned short (*get_charstring_name) (FAPI_font *ff, int index,     byte *buf, ushort buf_length);
-};
-
-typedef struct FAPI_face_s FAPI_face;
-struct FAPI_face_s {
-    gs_id font_id;
-    gs_matrix ctm;
-    gs_log2_scale_point log2_scale;
-    bool align_to_pixels;
-    float HWResolution[2];
-};
-
-typedef struct FAPI_path_s FAPI_path;
-struct FAPI_path_s {
-    void *olh; /* Client's data. */
-    int shift;
-    int gs_error;
-    int (*moveto   )(FAPI_path *, int64_t, int64_t);
-    int (*lineto   )(FAPI_path *, int64_t, int64_t);
-    int (*curveto  )(FAPI_path *, int64_t, int64_t, int64_t, int64_t, int64_t, int64_t);
-    int (*closepath)(FAPI_path *);
-};
-
-typedef struct FAPI_font_scale_s {
-    FracInt matrix[6];
-    FracInt HWResolution[2];
-    int subpixels[2];
-    bool align_to_pixels;
-} FAPI_font_scale;
-
-typedef struct FAPI_metrics_s {
-    int bbox_x0, bbox_y0, bbox_x1, bbox_y1; /* design units */
-    int escapement; /* design units */
-    int v_escapement; /* design units */
-    int em_x, em_y; /* design units */
-} FAPI_metrics;
-
-typedef struct { /* 1bit/pixel only, rows are byte-aligned. */
-    void *p;
-    int width, height, line_step;
-    int orig_x, orig_y; /* origin, 1/16s pixel */
-    int left_indent, top_indent;
-    int black_width, black_height;
-} FAPI_raster;
-
-#ifndef FAPI_server_DEFINED
-#define FAPI_server_DEFINED
-typedef struct FAPI_server_s FAPI_server;
-#endif
-
-typedef enum FAPI_descendant_code_s {  /* Possible values are descendant font indices and 4 ones defined below. */
-    FAPI_DESCENDANT_PREPARED = -1, /* See FAPI_prepare_font in zfapi.c . */
-    FAPI_TOPLEVEL_PREPARED = -2,
-    FAPI_TOPLEVEL_BEGIN = -3,
-    FAPI_TOPLEVEL_COMPLETE = -4
-} FAPI_descendant_code;
-
-struct FAPI_server_s {
-    i_plugin_instance ig;
-    int frac_shift; /* The number of fractional bits in coordinates. */
-    FAPI_face face;
-    FAPI_font ff;
-    int max_bitmap;
-    bool use_outline;
-    gs_matrix initial_FontMatrix; /* Font Matrix at the time the font is defined */
-                                  /* Used to use the stored 'OrigFont' entry but */
-                                  /* this did not change f a font was defined    */
-                                  /* using an existing base font */
-    FAPI_retcode (*ensure_open)(FAPI_server *server, const byte * param, int param_size);
-    FAPI_retcode (*get_scaled_font)(FAPI_server *server, FAPI_font *ff, const FAPI_font_scale *scale, const char *xlatmap, FAPI_descendant_code dc);
-    FAPI_retcode (*get_decodingID)(FAPI_server *server, FAPI_font *ff, const char **decodingID);
-    FAPI_retcode (*get_font_bbox)(FAPI_server *server, FAPI_font *ff, int BBox[4]);
-    FAPI_retcode (*get_font_proportional_feature)(FAPI_server *server, FAPI_font *ff, bool *bProportional);
-    FAPI_retcode (*can_retrieve_char_by_name)(FAPI_server *server, FAPI_font *ff, FAPI_char_ref *c, int *result);
-    FAPI_retcode (*can_replace_metrics)(FAPI_server *server, FAPI_font *ff, FAPI_char_ref *c, int *result);
-    FAPI_retcode (*get_fontmatrix)(FAPI_server *server, gs_matrix *m);
-    FAPI_retcode (*get_char_width)(FAPI_server *server, FAPI_font *ff, FAPI_char_ref *c, FAPI_metrics *metrics);
-    FAPI_retcode (*get_char_raster_metrics)(FAPI_server *server, FAPI_font *ff, FAPI_char_ref *c, FAPI_metrics *metrics);
-    FAPI_retcode (*get_char_raster)(FAPI_server *server, FAPI_raster *r);
-    FAPI_retcode (*get_char_outline_metrics)(FAPI_server *server, FAPI_font *ff, FAPI_char_ref *c, FAPI_metrics *metrics);
-    FAPI_retcode (*get_char_outline)(FAPI_server *server, FAPI_path *p);
-    FAPI_retcode (*release_char_data)(FAPI_server *server);
-    FAPI_retcode (*release_typeface)(FAPI_server *server, void *server_font_data);
-    FAPI_retcode (*check_cmap_for_GID)(FAPI_server *server, uint *index);
-    /*  Some people get confused with terms "font cache" and "character cache".
-        "font cache" means a cache for scaled font objects, which mainly
-        keep the font header information and rules for adjusting it to specific raster.
-        "character cahce" is a cache for specific character outlines and/or character rasters.
-    */
-    /*  get_scaled_font opens a typeface with a server and scales it according to CTM and HWResolution.
-        This creates a server's scaled font object.
-        Since UFST doesn't provide a handle to this object,
-        we need to build the data for it and call this function whenever scaled font data may change.
-        The server must cache scaled fonts internally.
-        Note that FreeType doesn't provide internal font cache,
-        so the bridge must do.
-    */
-    /*  GS cannot provide information when a scaled font to be closed.
-        Therefore we don't provide close_scaled_font function in this interface.
-        The server must cache scaled fonts, and close ones which were
-        not in use during a long time.
-    */
-    /*  Due to the interpreter fallback with CDevProc,
-        get_char_raster_metrics leaves some data kept by the server,
-        so taht get_char_raster uses them and release_char_data releases them.
-        Therefore calls from GS to these functions must not
-        interfer with different characters.
-    */
-};
+#include "gxfapi.h"
 
 #endif /* ifapi_INCLUDED */