diff options
Diffstat (limited to 'src/3rdparty/freetype/src/pfr/pfrgload.c')
| -rw-r--r-- | src/3rdparty/freetype/src/pfr/pfrgload.c | 828 |
1 files changed, 0 insertions, 828 deletions
diff --git a/src/3rdparty/freetype/src/pfr/pfrgload.c b/src/3rdparty/freetype/src/pfr/pfrgload.c deleted file mode 100644 index 6fe6e4225..000000000 --- a/src/3rdparty/freetype/src/pfr/pfrgload.c +++ /dev/null @@ -1,828 +0,0 @@ -/***************************************************************************/ -/* */ -/* pfrgload.c */ -/* */ -/* FreeType PFR glyph loader (body). */ -/* */ -/* Copyright 2002, 2003, 2005, 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 "pfrgload.h" -#include "pfrsbit.h" -#include "pfrload.h" /* for macro definitions */ -#include FT_INTERNAL_DEBUG_H - -#include "pfrerror.h" - -#undef FT_COMPONENT -#define FT_COMPONENT trace_pfr - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** PFR GLYPH BUILDER *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - - FT_LOCAL_DEF( void ) - pfr_glyph_init( PFR_Glyph glyph, - FT_GlyphLoader loader ) - { - FT_ZERO( glyph ); - - glyph->loader = loader; - glyph->path_begun = 0; - - FT_GlyphLoader_Rewind( loader ); - } - - - FT_LOCAL_DEF( void ) - pfr_glyph_done( PFR_Glyph glyph ) - { - FT_Memory memory = glyph->loader->memory; - - - FT_FREE( glyph->x_control ); - glyph->y_control = NULL; - - glyph->max_xy_control = 0; -#if 0 - glyph->num_x_control = 0; - glyph->num_y_control = 0; -#endif - - FT_FREE( glyph->subs ); - - glyph->max_subs = 0; - glyph->num_subs = 0; - - glyph->loader = NULL; - glyph->path_begun = 0; - } - - - /* close current contour, if any */ - static void - pfr_glyph_close_contour( PFR_Glyph glyph ) - { - FT_GlyphLoader loader = glyph->loader; - FT_Outline* outline = &loader->current.outline; - FT_Int last, first; - - - if ( !glyph->path_begun ) - return; - - /* compute first and last point indices in current glyph outline */ - last = outline->n_points - 1; - first = 0; - if ( outline->n_contours > 0 ) - first = outline->contours[outline->n_contours - 1]; - - /* if the last point falls on the same location than the first one */ - /* we need to delete it */ - if ( last > first ) - { - FT_Vector* p1 = outline->points + first; - FT_Vector* p2 = outline->points + last; - - - if ( p1->x == p2->x && p1->y == p2->y ) - { - outline->n_points--; - last--; - } - } - - /* don't add empty contours */ - if ( last >= first ) - outline->contours[outline->n_contours++] = (short)last; - - glyph->path_begun = 0; - } - - - /* reset glyph to start the loading of a new glyph */ - static void - pfr_glyph_start( PFR_Glyph glyph ) - { - glyph->path_begun = 0; - } - - - static FT_Error - pfr_glyph_line_to( PFR_Glyph glyph, - FT_Vector* to ) - { - FT_GlyphLoader loader = glyph->loader; - FT_Outline* outline = &loader->current.outline; - FT_Error error; - - - /* check that we have begun a new path */ - if ( !glyph->path_begun ) - { - error = PFR_Err_Invalid_Table; - FT_ERROR(( "pfr_glyph_line_to: invalid glyph data\n" )); - goto Exit; - } - - error = FT_GLYPHLOADER_CHECK_POINTS( loader, 1, 0 ); - if ( !error ) - { - FT_UInt n = outline->n_points; - - - outline->points[n] = *to; - outline->tags [n] = FT_CURVE_TAG_ON; - - outline->n_points++; - } - - Exit: - return error; - } - - - static FT_Error - pfr_glyph_curve_to( PFR_Glyph glyph, - FT_Vector* control1, - FT_Vector* control2, - FT_Vector* to ) - { - FT_GlyphLoader loader = glyph->loader; - FT_Outline* outline = &loader->current.outline; - FT_Error error; - - - /* check that we have begun a new path */ - if ( !glyph->path_begun ) - { - error = PFR_Err_Invalid_Table; - FT_ERROR(( "pfr_glyph_line_to: invalid glyph data\n" )); - goto Exit; - } - - error = FT_GLYPHLOADER_CHECK_POINTS( loader, 3, 0 ); - if ( !error ) - { - FT_Vector* vec = outline->points + outline->n_points; - FT_Byte* tag = (FT_Byte*)outline->tags + outline->n_points; - - - vec[0] = *control1; - vec[1] = *control2; - vec[2] = *to; - tag[0] = FT_CURVE_TAG_CUBIC; - tag[1] = FT_CURVE_TAG_CUBIC; - tag[2] = FT_CURVE_TAG_ON; - - outline->n_points = (FT_Short)( outline->n_points + 3 ); - } - - Exit: - return error; - } - - - static FT_Error - pfr_glyph_move_to( PFR_Glyph glyph, - FT_Vector* to ) - { - FT_GlyphLoader loader = glyph->loader; - FT_Error error; - - - /* close current contour if any */ - pfr_glyph_close_contour( glyph ); - - /* indicate that a new contour has started */ - glyph->path_begun = 1; - - /* check that there is space for a new contour and a new point */ - error = FT_GLYPHLOADER_CHECK_POINTS( loader, 1, 1 ); - if ( !error ) - /* add new start point */ - error = pfr_glyph_line_to( glyph, to ); - - return error; - } - - - static void - pfr_glyph_end( PFR_Glyph glyph ) - { - /* close current contour if any */ - pfr_glyph_close_contour( glyph ); - - /* merge the current glyph into the stack */ - FT_GlyphLoader_Add( glyph->loader ); - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** PFR GLYPH LOADER *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - - /* load a simple glyph */ - static FT_Error - pfr_glyph_load_simple( PFR_Glyph glyph, - FT_Byte* p, - FT_Byte* limit ) - { - FT_Error error = 0; - FT_Memory memory = glyph->loader->memory; - FT_UInt flags, x_count, y_count, i, count, mask; - FT_Int x; - - - PFR_CHECK( 1 ); - flags = PFR_NEXT_BYTE( p ); - - /* test for composite glyphs */ - if ( flags & PFR_GLYPH_IS_COMPOUND ) - goto Failure; - - x_count = 0; - y_count = 0; - - if ( flags & PFR_GLYPH_1BYTE_XYCOUNT ) - { - PFR_CHECK( 1 ); - count = PFR_NEXT_BYTE( p ); - x_count = ( count & 15 ); - y_count = ( count >> 4 ); - } - else - { - if ( flags & PFR_GLYPH_XCOUNT ) - { - PFR_CHECK( 1 ); - x_count = PFR_NEXT_BYTE( p ); - } - - if ( flags & PFR_GLYPH_YCOUNT ) - { - PFR_CHECK( 1 ); - y_count = PFR_NEXT_BYTE( p ); - } - } - - count = x_count + y_count; - - /* re-allocate array when necessary */ - if ( count > glyph->max_xy_control ) - { - FT_UInt new_max = FT_PAD_CEIL( count, 8 ); - - - if ( FT_RENEW_ARRAY( glyph->x_control, - glyph->max_xy_control, - new_max ) ) - goto Exit; - - glyph->max_xy_control = new_max; - } - - glyph->y_control = glyph->x_control + x_count; - - mask = 0; - x = 0; - - for ( i = 0; i < count; i++ ) - { - if ( ( i & 7 ) == 0 ) - { - PFR_CHECK( 1 ); - mask = PFR_NEXT_BYTE( p ); - } - - if ( mask & 1 ) - { - PFR_CHECK( 2 ); - x = PFR_NEXT_SHORT( p ); - } - else - { - PFR_CHECK( 1 ); - x += PFR_NEXT_BYTE( p ); - } - - glyph->x_control[i] = x; - - mask >>= 1; - } - - /* XXX: for now we ignore the secondary stroke and edge definitions */ - /* since we don't want to support native PFR hinting */ - /* */ - if ( flags & PFR_GLYPH_EXTRA_ITEMS ) - { - error = pfr_extra_items_skip( &p, limit ); - if ( error ) - goto Exit; - } - - pfr_glyph_start( glyph ); - - /* now load a simple glyph */ - { - FT_Vector pos[4]; - FT_Vector* cur; - - - pos[0].x = pos[0].y = 0; - pos[3] = pos[0]; - - for (;;) - { - FT_UInt format, format_low, args_format = 0, args_count, n; - - - /***************************************************************/ - /* read instruction */ - /* */ - PFR_CHECK( 1 ); - format = PFR_NEXT_BYTE( p ); - format_low = format & 15; - - switch ( format >> 4 ) - { - case 0: /* end glyph */ - FT_TRACE6(( "- end glyph" )); - args_count = 0; - break; - - case 1: /* general line operation */ - FT_TRACE6(( "- general line" )); - goto Line1; - - case 4: /* move to inside contour */ - FT_TRACE6(( "- move to inside" )); - goto Line1; - - case 5: /* move to outside contour */ - FT_TRACE6(( "- move to outside" )); - Line1: - args_format = format_low; - args_count = 1; - break; - - case 2: /* horizontal line to */ - FT_TRACE6(( "- horizontal line to cx.%d", format_low )); - if ( format_low > x_count ) - goto Failure; - pos[0].x = glyph->x_control[format_low]; - pos[0].y = pos[3].y; - pos[3] = pos[0]; - args_count = 0; - break; - - case 3: /* vertical line to */ - FT_TRACE6(( "- vertical line to cy.%d", format_low )); - if ( format_low > y_count ) - goto Failure; - pos[0].x = pos[3].x; - pos[0].y = glyph->y_control[format_low]; - pos[3] = pos[0]; - args_count = 0; - break; - - case 6: /* horizontal to vertical curve */ - FT_TRACE6(( "- hv curve " )); - args_format = 0xB8E; - args_count = 3; - break; - - case 7: /* vertical to horizontal curve */ - FT_TRACE6(( "- vh curve" )); - args_format = 0xE2B; - args_count = 3; - break; - - default: /* general curve to */ - FT_TRACE6(( "- general curve" )); - args_count = 4; - args_format = format_low; - } - - /***********************************************************/ - /* now read arguments */ - /* */ - cur = pos; - for ( n = 0; n < args_count; n++ ) - { - FT_UInt idx; - FT_Int delta; - - - /* read the X argument */ - switch ( args_format & 3 ) - { - case 0: /* 8-bit index */ - PFR_CHECK( 1 ); - idx = PFR_NEXT_BYTE( p ); - if ( idx > x_count ) - goto Failure; - cur->x = glyph->x_control[idx]; - FT_TRACE7(( " cx#%d", idx )); - break; - - case 1: /* 16-bit value */ - PFR_CHECK( 2 ); - cur->x = PFR_NEXT_SHORT( p ); - FT_TRACE7(( " x.%d", cur->x )); - break; - - case 2: /* 8-bit delta */ - PFR_CHECK( 1 ); - delta = PFR_NEXT_INT8( p ); - cur->x = pos[3].x + delta; - FT_TRACE7(( " dx.%d", delta )); - break; - - default: - FT_TRACE7(( " |" )); - cur->x = pos[3].x; - } - - /* read the Y argument */ - switch ( ( args_format >> 2 ) & 3 ) - { - case 0: /* 8-bit index */ - PFR_CHECK( 1 ); - idx = PFR_NEXT_BYTE( p ); - if ( idx > y_count ) - goto Failure; - cur->y = glyph->y_control[idx]; - FT_TRACE7(( " cy#%d", idx )); - break; - - case 1: /* 16-bit absolute value */ - PFR_CHECK( 2 ); - cur->y = PFR_NEXT_SHORT( p ); - FT_TRACE7(( " y.%d", cur->y )); - break; - - case 2: /* 8-bit delta */ - PFR_CHECK( 1 ); - delta = PFR_NEXT_INT8( p ); - cur->y = pos[3].y + delta; - FT_TRACE7(( " dy.%d", delta )); - break; - - default: - FT_TRACE7(( " -" )); - cur->y = pos[3].y; - } - - /* read the additional format flag for the general curve */ - if ( n == 0 && args_count == 4 ) - { - PFR_CHECK( 1 ); - args_format = PFR_NEXT_BYTE( p ); - args_count--; - } - else - args_format >>= 4; - - /* save the previous point */ - pos[3] = cur[0]; - cur++; - } - - FT_TRACE7(( "\n" )); - - /***********************************************************/ - /* finally, execute instruction */ - /* */ - switch ( format >> 4 ) - { - case 0: /* end glyph => EXIT */ - pfr_glyph_end( glyph ); - goto Exit; - - case 1: /* line operations */ - case 2: - case 3: - error = pfr_glyph_line_to( glyph, pos ); - goto Test_Error; - - case 4: /* move to inside contour */ - case 5: /* move to outside contour */ - error = pfr_glyph_move_to( glyph, pos ); - goto Test_Error; - - default: /* curve operations */ - error = pfr_glyph_curve_to( glyph, pos, pos + 1, pos + 2 ); - - Test_Error: /* test error condition */ - if ( error ) - goto Exit; - } - } /* for (;;) */ - } - - Exit: - return error; - - Failure: - Too_Short: - error = PFR_Err_Invalid_Table; - FT_ERROR(( "pfr_glyph_load_simple: invalid glyph data\n" )); - goto Exit; - } - - - /* load a composite/compound glyph */ - static FT_Error - pfr_glyph_load_compound( PFR_Glyph glyph, - FT_Byte* p, - FT_Byte* limit ) - { - FT_Error error = 0; - FT_GlyphLoader loader = glyph->loader; - FT_Memory memory = loader->memory; - PFR_SubGlyph subglyph; - FT_UInt flags, i, count, org_count; - FT_Int x_pos, y_pos; - - - PFR_CHECK( 1 ); - flags = PFR_NEXT_BYTE( p ); - - /* test for composite glyphs */ - if ( !( flags & PFR_GLYPH_IS_COMPOUND ) ) - goto Failure; - - count = flags & 0x3F; - - /* ignore extra items when present */ - /* */ - if ( flags & PFR_GLYPH_EXTRA_ITEMS ) - { - error = pfr_extra_items_skip( &p, limit ); - if (error) goto Exit; - } - - /* we can't rely on the FT_GlyphLoader to load sub-glyphs, because */ - /* the PFR format is dumb, using direct file offsets to point to the */ - /* sub-glyphs (instead of glyph indices). Sigh. */ - /* */ - /* For now, we load the list of sub-glyphs into a different array */ - /* but this will prevent us from using the auto-hinter at its best */ - /* quality. */ - /* */ - org_count = glyph->num_subs; - - if ( org_count + count > glyph->max_subs ) - { - FT_UInt new_max = ( org_count + count + 3 ) & (FT_UInt)-4; - - - if ( FT_RENEW_ARRAY( glyph->subs, glyph->max_subs, new_max ) ) - goto Exit; - - glyph->max_subs = new_max; - } - - subglyph = glyph->subs + org_count; - - for ( i = 0; i < count; i++, subglyph++ ) - { - FT_UInt format; - - - x_pos = 0; - y_pos = 0; - - PFR_CHECK( 1 ); - format = PFR_NEXT_BYTE( p ); - - /* read scale when available */ - subglyph->x_scale = 0x10000L; - if ( format & PFR_SUBGLYPH_XSCALE ) - { - PFR_CHECK( 2 ); - subglyph->x_scale = PFR_NEXT_SHORT( p ) << 4; - } - - subglyph->y_scale = 0x10000L; - if ( format & PFR_SUBGLYPH_YSCALE ) - { - PFR_CHECK( 2 ); - subglyph->y_scale = PFR_NEXT_SHORT( p ) << 4; - } - - /* read offset */ - switch ( format & 3 ) - { - case 1: - PFR_CHECK( 2 ); - x_pos = PFR_NEXT_SHORT( p ); - break; - - case 2: - PFR_CHECK( 1 ); - x_pos += PFR_NEXT_INT8( p ); - break; - - default: - ; - } - - switch ( ( format >> 2 ) & 3 ) - { - case 1: - PFR_CHECK( 2 ); - y_pos = PFR_NEXT_SHORT( p ); - break; - - case 2: - PFR_CHECK( 1 ); - y_pos += PFR_NEXT_INT8( p ); - break; - - default: - ; - } - - subglyph->x_delta = x_pos; - subglyph->y_delta = y_pos; - - /* read glyph position and size now */ - if ( format & PFR_SUBGLYPH_2BYTE_SIZE ) - { - PFR_CHECK( 2 ); - subglyph->gps_size = PFR_NEXT_USHORT( p ); - } - else - { - PFR_CHECK( 1 ); - subglyph->gps_size = PFR_NEXT_BYTE( p ); - } - - if ( format & PFR_SUBGLYPH_3BYTE_OFFSET ) - { - PFR_CHECK( 3 ); - subglyph->gps_offset = PFR_NEXT_LONG( p ); - } - else - { - PFR_CHECK( 2 ); - subglyph->gps_offset = PFR_NEXT_USHORT( p ); - } - - glyph->num_subs++; - } - - Exit: - return error; - - Failure: - Too_Short: - error = PFR_Err_Invalid_Table; - FT_ERROR(( "pfr_glyph_load_compound: invalid glyph data\n" )); - goto Exit; - } - - - static FT_Error - pfr_glyph_load_rec( PFR_Glyph glyph, - FT_Stream stream, - FT_ULong gps_offset, - FT_ULong offset, - FT_ULong size ) - { - FT_Error error; - FT_Byte* p; - FT_Byte* limit; - - - if ( FT_STREAM_SEEK( gps_offset + offset ) || - FT_FRAME_ENTER( size ) ) - goto Exit; - - p = (FT_Byte*)stream->cursor; - limit = p + size; - - if ( size > 0 && *p & PFR_GLYPH_IS_COMPOUND ) - { - FT_Int n, old_count, count; - FT_GlyphLoader loader = glyph->loader; - FT_Outline* base = &loader->base.outline; - - - old_count = glyph->num_subs; - - /* this is a compound glyph - load it */ - error = pfr_glyph_load_compound( glyph, p, limit ); - - FT_FRAME_EXIT(); - - if ( error ) - goto Exit; - - count = glyph->num_subs - old_count; - - /* now, load each individual glyph */ - for ( n = 0; n < count; n++ ) - { - FT_Int i, old_points, num_points; - PFR_SubGlyph subglyph; - - - subglyph = glyph->subs + old_count + n; - old_points = base->n_points; - - error = pfr_glyph_load_rec( glyph, stream, gps_offset, - subglyph->gps_offset, - subglyph->gps_size ); - if ( error ) - goto Exit; - - /* note that `glyph->subs' might have been re-allocated */ - subglyph = glyph->subs + old_count + n; - num_points = base->n_points - old_points; - - /* translate and eventually scale the new glyph points */ - if ( subglyph->x_scale != 0x10000L || subglyph->y_scale != 0x10000L ) - { - FT_Vector* vec = base->points + old_points; - - - for ( i = 0; i < num_points; i++, vec++ ) - { - vec->x = FT_MulFix( vec->x, subglyph->x_scale ) + - subglyph->x_delta; - vec->y = FT_MulFix( vec->y, subglyph->y_scale ) + - subglyph->y_delta; - } - } - else - { - FT_Vector* vec = loader->base.outline.points + old_points; - - - for ( i = 0; i < num_points; i++, vec++ ) - { - vec->x += subglyph->x_delta; - vec->y += subglyph->y_delta; - } - } - - /* proceed to next sub-glyph */ - } - } - else - { - /* load a simple glyph */ - error = pfr_glyph_load_simple( glyph, p, limit ); - - FT_FRAME_EXIT(); - } - - Exit: - return error; - } - - - - - - FT_LOCAL_DEF( FT_Error ) - pfr_glyph_load( PFR_Glyph glyph, - FT_Stream stream, - FT_ULong gps_offset, - FT_ULong offset, - FT_ULong size ) - { - /* initialize glyph loader */ - FT_GlyphLoader_Rewind( glyph->loader ); - - glyph->num_subs = 0; - - /* load the glyph, recursively when needed */ - return pfr_glyph_load_rec( glyph, stream, gps_offset, offset, size ); - } - - -/* END */ |