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Diffstat (limited to 'modules/freetype2/builds/windows/ftsystem.c')
| -rw-r--r-- | modules/freetype2/builds/windows/ftsystem.c | 499 |
1 files changed, 499 insertions, 0 deletions
diff --git a/modules/freetype2/builds/windows/ftsystem.c b/modules/freetype2/builds/windows/ftsystem.c new file mode 100644 index 0000000000..418d7995e3 --- /dev/null +++ b/modules/freetype2/builds/windows/ftsystem.c @@ -0,0 +1,499 @@ +/**************************************************************************** + * + * ftsystem.c + * + * Windows-specific FreeType low-level system interface (body). + * + * Copyright (C) 2021-2023 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> + /* we use our special ftconfig.h file, not the standard one */ +#include FT_CONFIG_CONFIG_H +#include <freetype/internal/ftdebug.h> +#include <freetype/ftsystem.h> +#include <freetype/fterrors.h> +#include <freetype/fttypes.h> +#include <freetype/internal/ftstream.h> + + /* memory mapping and allocation includes and definitions */ +#define WIN32_LEAN_AND_MEAN +#include <windows.h> + + + /************************************************************************** + * + * MEMORY MANAGEMENT INTERFACE + * + */ + + + /************************************************************************** + * + * It is not necessary to do any error checking for the + * allocation-related functions. This will be done by the higher level + * routines like ft_mem_alloc() or ft_mem_realloc(). + * + */ + + + /************************************************************************** + * + * @Function: + * ft_alloc + * + * @Description: + * The memory allocation function. + * + * @Input: + * memory :: + * A pointer to the memory object. + * + * size :: + * The requested size in bytes. + * + * @Return: + * The address of newly allocated block. + */ + FT_CALLBACK_DEF( void* ) + ft_alloc( FT_Memory memory, + long size ) + { + return HeapAlloc( memory->user, 0, size ); + } + + + /************************************************************************** + * + * @Function: + * ft_realloc + * + * @Description: + * The memory reallocation function. + * + * @Input: + * memory :: + * A pointer to the memory object. + * + * cur_size :: + * The current size of the allocated memory block. + * + * new_size :: + * The newly requested size in bytes. + * + * block :: + * The current address of the block in memory. + * + * @Return: + * The address of the reallocated memory block. + */ + FT_CALLBACK_DEF( void* ) + ft_realloc( FT_Memory memory, + long cur_size, + long new_size, + void* block ) + { + FT_UNUSED( cur_size ); + + return HeapReAlloc( memory->user, 0, block, new_size ); + } + + + /************************************************************************** + * + * @Function: + * ft_free + * + * @Description: + * The memory release function. + * + * @Input: + * memory :: + * A pointer to the memory object. + * + * block :: + * The address of block in memory to be freed. + */ + FT_CALLBACK_DEF( void ) + ft_free( FT_Memory memory, + void* block ) + { + HeapFree( memory->user, 0, block ); + } + + + /************************************************************************** + * + * RESOURCE MANAGEMENT INTERFACE + * + */ + + + /************************************************************************** + * + * 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 io + + /* We use the macro STREAM_FILE for convenience to extract the */ + /* system-specific stream handle from a given FreeType stream object */ +#define STREAM_FILE( stream ) ( (FILE*)stream->descriptor.pointer ) + + + /************************************************************************** + * + * @Function: + * ft_close_stream_by_munmap + * + * @Description: + * The function to close a stream which is opened by mmap. + * + * @Input: + * stream :: A pointer to the stream object. + */ + FT_CALLBACK_DEF( void ) + ft_close_stream_by_munmap( FT_Stream stream ) + { + UnmapViewOfFile( (LPCVOID)stream->descriptor.pointer ); + + stream->descriptor.pointer = NULL; + stream->size = 0; + stream->base = NULL; + } + + + /************************************************************************** + * + * @Function: + * ft_close_stream_by_free + * + * @Description: + * The function to close a stream which is created by ft_alloc. + * + * @Input: + * stream :: A pointer to the stream object. + */ + FT_CALLBACK_DEF( void ) + ft_close_stream_by_free( FT_Stream stream ) + { + ft_free( stream->memory, stream->descriptor.pointer ); + + stream->descriptor.pointer = NULL; + stream->size = 0; + stream->base = NULL; + } + + + /* non-desktop Universal Windows Platform */ +#if defined( WINAPI_FAMILY ) && WINAPI_FAMILY != WINAPI_FAMILY_DESKTOP_APP + +#define PACK_DWORD64( hi, lo ) ( ( (DWORD64)(hi) << 32 ) | (DWORD)(lo) ) + +#define CreateFileMapping( a, b, c, d, e, f ) \ + CreateFileMappingFromApp( a, b, c, PACK_DWORD64( d, e ), f ) +#define MapViewOfFile( a, b, c, d, e ) \ + MapViewOfFileFromApp( a, b, PACK_DWORD64( c, d ), e ) + + FT_LOCAL_DEF( HANDLE ) + CreateFileA( LPCSTR lpFileName, + DWORD dwDesiredAccess, + DWORD dwShareMode, + LPSECURITY_ATTRIBUTES lpSecurityAttributes, + DWORD dwCreationDisposition, + DWORD dwFlagsAndAttributes, + HANDLE hTemplateFile ) + { + int len; + LPWSTR lpFileNameW; + + CREATEFILE2_EXTENDED_PARAMETERS createExParams = { + sizeof ( CREATEFILE2_EXTENDED_PARAMETERS ), + dwFlagsAndAttributes & 0x0000FFFF, + dwFlagsAndAttributes & 0xFFF00000, + dwFlagsAndAttributes & 0x000F0000, + lpSecurityAttributes, + hTemplateFile }; + + + /* allocate memory space for converted path name */ + len = MultiByteToWideChar( CP_ACP, MB_ERR_INVALID_CHARS, + lpFileName, -1, NULL, 0 ); + + lpFileNameW = (LPWSTR)_alloca( len * sizeof ( WCHAR ) ); + + if ( !len || !lpFileNameW ) + { + FT_ERROR(( "FT_Stream_Open: cannot convert file name to LPWSTR\n" )); + return INVALID_HANDLE_VALUE; + } + + /* now it is safe to do the translation */ + MultiByteToWideChar( CP_ACP, MB_ERR_INVALID_CHARS, + lpFileName, -1, lpFileNameW, len ); + + /* open the file */ + return CreateFile2( lpFileNameW, dwDesiredAccess, dwShareMode, + dwCreationDisposition, &createExParams ); + } + +#endif + + +#if defined( _WIN32_WCE ) + + /* malloc.h provides implementation of alloca()/_alloca() */ + #include <malloc.h> + + FT_LOCAL_DEF( HANDLE ) + CreateFileA( LPCSTR lpFileName, + DWORD dwDesiredAccess, + DWORD dwShareMode, + LPSECURITY_ATTRIBUTES lpSecurityAttributes, + DWORD dwCreationDisposition, + DWORD dwFlagsAndAttributes, + HANDLE hTemplateFile ) + { + int len; + LPWSTR lpFileNameW; + + + /* allocate memory space for converted path name */ + len = MultiByteToWideChar( CP_ACP, MB_ERR_INVALID_CHARS, + lpFileName, -1, NULL, 0 ); + + lpFileNameW = (LPWSTR)_alloca( len * sizeof ( WCHAR ) ); + + if ( !len || !lpFileNameW ) + { + FT_ERROR(( "FT_Stream_Open: cannot convert file name to LPWSTR\n" )); + return INVALID_HANDLE_VALUE; + } + + /* now it is safe to do the translation */ + MultiByteToWideChar( CP_ACP, MB_ERR_INVALID_CHARS, + lpFileName, -1, lpFileNameW, len ); + + /* open the file */ + return CreateFileW( lpFileNameW, dwDesiredAccess, dwShareMode, + lpSecurityAttributes, dwCreationDisposition, + dwFlagsAndAttributes, hTemplateFile ); + } + +#endif + + +#if defined( _WIN32_WCE ) || defined ( _WIN32_WINDOWS ) || \ + !defined( _WIN32_WINNT ) || _WIN32_WINNT <= 0x0400 + + FT_LOCAL_DEF( BOOL ) + GetFileSizeEx( HANDLE hFile, + PLARGE_INTEGER lpFileSize ) + { + lpFileSize->u.LowPart = GetFileSize( hFile, + (DWORD *)&lpFileSize->u.HighPart ); + + if ( lpFileSize->u.LowPart == INVALID_FILE_SIZE && + GetLastError() != NO_ERROR ) + return FALSE; + else + return TRUE; + } + +#endif + + + /* documentation is in ftobjs.h */ + + FT_BASE_DEF( FT_Error ) + FT_Stream_Open( FT_Stream stream, + const char* filepathname ) + { + HANDLE file; + HANDLE fm; + LARGE_INTEGER size; + + + if ( !stream ) + return FT_THROW( Invalid_Stream_Handle ); + + /* open the file */ + file = CreateFileA( (LPCSTR)filepathname, GENERIC_READ, FILE_SHARE_READ, + NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0 ); + if ( file == INVALID_HANDLE_VALUE ) + { + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not open `%s'\n", filepathname )); + return FT_THROW( Cannot_Open_Resource ); + } + + if ( GetFileSizeEx( file, &size ) == FALSE ) + { + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not retrieve size of file `%s'\n", filepathname )); + goto Fail_Open; + } + + /* `stream->size' is typedef'd to unsigned long (in `ftsystem.h'); */ + /* So avoid overflow caused by fonts in huge files larger than */ + /* 2GB, do a test. */ + if ( size.QuadPart > LONG_MAX ) + { + FT_ERROR(( "FT_Stream_Open: file is too big\n" )); + goto Fail_Open; + } + else if ( size.QuadPart == 0 ) + { + FT_ERROR(( "FT_Stream_Open: zero-length file\n" )); + goto Fail_Open; + } + + fm = CreateFileMapping( file, NULL, PAGE_READONLY, 0, 0, NULL ); + if ( fm == NULL ) + { + FT_ERROR(( "FT_Stream_Open: can not map file\n" )); + goto Fail_Open; + } + + /* Store only the low part of this 64 bits integer because long is */ + /* a 32 bits type. Anyway, a check has been done above to forbid */ + /* a size greater than LONG_MAX */ + stream->size = size.LowPart; + stream->pos = 0; + stream->base = (unsigned char *) + MapViewOfFile( fm, FILE_MAP_READ, 0, 0, 0 ); + + CloseHandle( fm ); + + if ( stream->base != NULL ) + stream->close = ft_close_stream_by_munmap; + else + { + DWORD total_read_count; + + + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not `mmap' file `%s'\n", filepathname )); + + stream->base = (unsigned char*)ft_alloc( stream->memory, stream->size ); + + if ( !stream->base ) + { + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not `alloc' memory\n" )); + goto Fail_Open; + } + + total_read_count = 0; + do + { + DWORD read_count; + + + if ( ReadFile( file, + stream->base + total_read_count, + stream->size - total_read_count, + &read_count, NULL ) == FALSE ) + { + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " error while `read'ing file `%s'\n", filepathname )); + goto Fail_Read; + } + + total_read_count += read_count; + + } while ( total_read_count != stream->size ); + + stream->close = ft_close_stream_by_free; + } + + CloseHandle( file ); + + stream->descriptor.pointer = stream->base; + stream->pathname.pointer = (char*)filepathname; + + stream->read = NULL; + + FT_TRACE1(( "FT_Stream_Open:" )); + FT_TRACE1(( " opened `%s' (%ld bytes) successfully\n", + filepathname, stream->size )); + + return FT_Err_Ok; + + Fail_Read: + ft_free( stream->memory, stream->base ); + + Fail_Open: + CloseHandle( file ); + + stream->base = NULL; + stream->size = 0; + stream->pos = 0; + + return FT_THROW( Cannot_Open_Stream ); + } + + +#ifdef FT_DEBUG_MEMORY + + extern FT_Int + ft_mem_debug_init( FT_Memory memory ); + + extern void + ft_mem_debug_done( FT_Memory memory ); + +#endif + + + /* documentation is in ftobjs.h */ + + FT_BASE_DEF( FT_Memory ) + FT_New_Memory( void ) + { + HANDLE heap; + FT_Memory memory; + + + heap = GetProcessHeap(); + memory = heap ? (FT_Memory)HeapAlloc( heap, 0, sizeof ( *memory ) ) + : NULL; + + if ( memory ) + { + memory->user = heap; + memory->alloc = ft_alloc; + memory->realloc = ft_realloc; + memory->free = ft_free; +#ifdef FT_DEBUG_MEMORY + ft_mem_debug_init( memory ); +#endif + } + + return memory; + } + + + /* documentation is in ftobjs.h */ + + FT_BASE_DEF( void ) + FT_Done_Memory( FT_Memory memory ) + { +#ifdef FT_DEBUG_MEMORY + ft_mem_debug_done( memory ); +#endif + memory->free( memory, memory ); + } + + +/* END */ |