static FT_Error read_pfb_tag( FT_Stream stream, FT_UShort *atag, FT_Long *asize ) { FT_Error error; FT_UShort tag; FT_Long size; *atag = 0; *asize = 0; if ( !FT_READ_USHORT( tag ) ) { if ( tag == 0x8001U || tag == 0x8002U ) { if ( !FT_READ_LONG_LE( size ) ) *asize = size; } *atag = tag; } return error; }
static FT_Error pcf_get_bitmaps( FT_Stream stream, PCF_Face face ) { FT_Error error = PCF_Err_Ok; FT_Memory memory = FT_FACE(face)->memory; FT_Long* offsets; FT_Long bitmapSizes[GLYPHPADOPTIONS]; FT_ULong format, size; int nbitmaps, i, sizebitmaps = 0; error = pcf_seek_to_table_type( stream, face->toc.tables, face->toc.count, PCF_BITMAPS, &format, &size ); if ( error ) return error; error = FT_Stream_EnterFrame( stream, 8 ); if ( error ) return error; format = FT_GET_ULONG_LE(); if ( PCF_BYTE_ORDER( format ) == MSBFirst ) nbitmaps = FT_GET_ULONG(); else nbitmaps = FT_GET_ULONG_LE(); FT_Stream_ExitFrame( stream ); if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) return PCF_Err_Invalid_File_Format; FT_TRACE4(( "pcf_get_bitmaps:\n" )); FT_TRACE4(( " number of bitmaps: %d\n", nbitmaps )); if ( nbitmaps != face->nmetrics ) return PCF_Err_Invalid_File_Format; if ( FT_NEW_ARRAY( offsets, nbitmaps ) ) return error; for ( i = 0; i < nbitmaps; i++ ) { if ( PCF_BYTE_ORDER( format ) == MSBFirst ) (void)FT_READ_LONG( offsets[i] ); else (void)FT_READ_LONG_LE( offsets[i] ); FT_TRACE5(( " bitmap %d: offset %ld (0x%lX)\n", i, offsets[i], offsets[i] )); } if ( error ) goto Bail; for ( i = 0; i < GLYPHPADOPTIONS; i++ ) { if ( PCF_BYTE_ORDER( format ) == MSBFirst ) (void)FT_READ_LONG( bitmapSizes[i] ); else (void)FT_READ_LONG_LE( bitmapSizes[i] ); if ( error ) goto Bail; sizebitmaps = bitmapSizes[PCF_GLYPH_PAD_INDEX( format )]; FT_TRACE4(( " padding %d implies a size of %ld\n", i, bitmapSizes[i] )); } FT_TRACE4(( " %d bitmaps, padding index %ld\n", nbitmaps, PCF_GLYPH_PAD_INDEX( format ) )); FT_TRACE4(( " bitmap size = %d\n", sizebitmaps )); FT_UNUSED( sizebitmaps ); /* only used for debugging */ for ( i = 0; i < nbitmaps; i++ ) { /* rough estimate */ if ( ( offsets[i] < 0 ) || ( (FT_ULong)offsets[i] > size ) ) { FT_ERROR(( "pcf_get_bitmaps:")); FT_ERROR(( " invalid offset to bitmap data of glyph %d\n", i )); } else face->metrics[i].bits = stream->pos + offsets[i]; } face->bitmapsFormat = format; Bail: FT_FREE( offsets ); return error; }