From c0b89ac5bfb90835ef01573267020e42d4fe070c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Sun, 23 Aug 2015 12:17:05 +0200 Subject: Imported Upstream version 1.8.0 --- jpeg/jmemmac.c | 289 --------------------------------------------------------- 1 file changed, 289 deletions(-) delete mode 100644 jpeg/jmemmac.c (limited to 'jpeg/jmemmac.c') diff --git a/jpeg/jmemmac.c b/jpeg/jmemmac.c deleted file mode 100644 index 106f9be..0000000 --- a/jpeg/jmemmac.c +++ /dev/null @@ -1,289 +0,0 @@ -/* - * jmemmac.c - * - * Copyright (C) 1992-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * jmemmac.c provides an Apple Macintosh implementation of the system- - * dependent portion of the JPEG memory manager. - * - * If you use jmemmac.c, then you must define USE_MAC_MEMMGR in the - * JPEG_INTERNALS part of jconfig.h. - * - * jmemmac.c uses the Macintosh toolbox routines NewPtr and DisposePtr - * instead of malloc and free. It accurately determines the amount of - * memory available by using CompactMem. Notice that if left to its - * own devices, this code can chew up all available space in the - * application's zone, with the exception of the rather small "slop" - * factor computed in jpeg_mem_available(). The application can ensure - * that more space is left over by reducing max_memory_to_use. - * - * Large images are swapped to disk using temporary files and System 7.0+'s - * temporary folder functionality. - * - * Note that jmemmac.c depends on two features of MacOS that were first - * introduced in System 7: FindFolder and the FSSpec-based calls. - * If your application uses jmemmac.c and is run under System 6 or earlier, - * and the jpeg library decides it needs a temporary file, it will abort, - * printing error messages about requiring System 7. (If no temporary files - * are created, it will run fine.) - * - * If you want to use jmemmac.c in an application that might be used with - * System 6 or earlier, then you should remove dependencies on FindFolder - * and the FSSpec calls. You will need to replace FindFolder with some - * other mechanism for finding a place to put temporary files, and you - * should replace the FSSpec calls with their HFS equivalents: - * - * FSpDelete -> HDelete - * FSpGetFInfo -> HGetFInfo - * FSpCreate -> HCreate - * FSpOpenDF -> HOpen *** Note: not HOpenDF *** - * FSMakeFSSpec -> (fill in spec by hand.) - * - * (Use HOpen instead of HOpenDF. HOpen is just a glue-interface to PBHOpen, - * which is on all HFS macs. HOpenDF is a System 7 addition which avoids the - * ages-old problem of names starting with a period.) - * - * Contributed by Sam Bushell (jsam@iagu.on.net) and - * Dan Gildor (gyld@in-touch.com). - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef USE_MAC_MEMMGR /* make sure user got configuration right */ - You forgot to define USE_MAC_MEMMGR in jconfig.h. /* deliberate syntax error */ -#endif - -#include /* we use the MacOS memory manager */ -#include /* we use the MacOS File stuff */ -#include /* we use the MacOS HFS stuff */ -#include /* for smSystemScript */ -#include /* we use Gestalt to test for specific functionality */ - -#ifndef TEMP_FILE_NAME /* can override from jconfig.h or Makefile */ -#define TEMP_FILE_NAME "JPG%03d.TMP" -#endif - -static int next_file_num; /* to distinguish among several temp files */ - - -/* - * Memory allocation and freeing are controlled by the MacOS library - * routines NewPtr() and DisposePtr(), which allocate fixed-address - * storage. Unfortunately, the IJG library isn't smart enough to cope - * with relocatable storage. - */ - -GLOBAL(void *) -jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void *) NewPtr(sizeofobject); -} - -GLOBAL(void) -jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) -{ - DisposePtr((Ptr) object); -} - - -/* - * "Large" objects are treated the same as "small" ones. - * NB: we include FAR keywords in the routine declarations simply for - * consistency with the rest of the IJG code; FAR should expand to empty - * on rational architectures like the Mac. - */ - -GLOBAL(void FAR *) -jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void FAR *) NewPtr(sizeofobject); -} - -GLOBAL(void) -jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) -{ - DisposePtr((Ptr) object); -} - - -/* - * This routine computes the total memory space available for allocation. - */ - -GLOBAL(long) -jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, - long max_bytes_needed, long already_allocated) -{ - long limit = cinfo->mem->max_memory_to_use - already_allocated; - long slop, mem; - - /* Don't ask for more than what application has told us we may use */ - if (max_bytes_needed > limit && limit > 0) - max_bytes_needed = limit; - /* Find whether there's a big enough free block in the heap. - * CompactMem tries to create a contiguous block of the requested size, - * and then returns the size of the largest free block (which could be - * much more or much less than we asked for). - * We add some slop to ensure we don't use up all available memory. - */ - slop = max_bytes_needed / 16 + 32768L; - mem = CompactMem(max_bytes_needed + slop) - slop; - if (mem < 0) - mem = 0; /* sigh, couldn't even get the slop */ - /* Don't take more than the application says we can have */ - if (mem > limit && limit > 0) - mem = limit; - return mem; -} - - -/* - * Backing store (temporary file) management. - * Backing store objects are only used when the value returned by - * jpeg_mem_available is less than the total space needed. You can dispense - * with these routines if you have plenty of virtual memory; see jmemnobs.c. - */ - - -METHODDEF(void) -read_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - long bytes = byte_count; - long retVal; - - if ( SetFPos ( info->temp_file, fsFromStart, file_offset ) != noErr ) - ERREXIT(cinfo, JERR_TFILE_SEEK); - - retVal = FSRead ( info->temp_file, &bytes, - (unsigned char *) buffer_address ); - if ( retVal != noErr || bytes != byte_count ) - ERREXIT(cinfo, JERR_TFILE_READ); -} - - -METHODDEF(void) -write_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - long bytes = byte_count; - long retVal; - - if ( SetFPos ( info->temp_file, fsFromStart, file_offset ) != noErr ) - ERREXIT(cinfo, JERR_TFILE_SEEK); - - retVal = FSWrite ( info->temp_file, &bytes, - (unsigned char *) buffer_address ); - if ( retVal != noErr || bytes != byte_count ) - ERREXIT(cinfo, JERR_TFILE_WRITE); -} - - -METHODDEF(void) -close_backing_store (j_common_ptr cinfo, backing_store_ptr info) -{ - FSClose ( info->temp_file ); - FSpDelete ( &(info->tempSpec) ); -} - - -/* - * Initial opening of a backing-store object. - * - * This version uses FindFolder to find the Temporary Items folder, - * and puts the temporary file in there. - */ - -GLOBAL(void) -jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - short tmpRef, vRefNum; - long dirID; - FInfo finderInfo; - FSSpec theSpec; - Str255 fName; - OSErr osErr; - long gestaltResponse = 0; - - /* Check that FSSpec calls are available. */ - osErr = Gestalt( gestaltFSAttr, &gestaltResponse ); - if ( ( osErr != noErr ) - || !( gestaltResponse & (1<temp_name, TEMP_FILE_NAME, next_file_num); - strcpy ( (Ptr)fName+1, info->temp_name ); - *fName = strlen (info->temp_name); - osErr = FSMakeFSSpec ( vRefNum, dirID, fName, &theSpec ); - - if ( (osErr = FSpGetFInfo ( &theSpec, &finderInfo ) ) != noErr ) - break; - } - - osErr = FSpCreate ( &theSpec, '????', '????', smSystemScript ); - if ( osErr != noErr ) - ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); - - osErr = FSpOpenDF ( &theSpec, fsRdWrPerm, &(info->temp_file) ); - if ( osErr != noErr ) - ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); - - info->tempSpec = theSpec; - - info->read_backing_store = read_backing_store; - info->write_backing_store = write_backing_store; - info->close_backing_store = close_backing_store; - TRACEMSS(cinfo, 1, JTRC_TFILE_OPEN, info->temp_name); -} - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. - */ - -GLOBAL(long) -jpeg_mem_init (j_common_ptr cinfo) -{ - next_file_num = 0; - - /* max_memory_to_use will be initialized to FreeMem()'s result; - * the calling application might later reduce it, for example - * to leave room to invoke multiple JPEG objects. - * Note that FreeMem returns the total number of free bytes; - * it may not be possible to allocate a single block of this size. - */ - return FreeMem(); -} - -GLOBAL(void) -jpeg_mem_term (j_common_ptr cinfo) -{ - /* no work */ -} -- cgit v1.2.3