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C/C++ Source or Header | 1999-03-29 | 30.0 KB | 793 lines

/* ** ** $VER: classbase.c 1.11 (7.11.97) ** mpegvideo.datatype 1.11 ** ** Library routines for a DataTypes class ** ** Written 1996/1997 by Roland 'Gizzy' Mainz ** Original example source from David N. Junod ** */ /* main includes */ #include "classbase.h" #ifdef __SASC /* SAS/C compatibly hack. This may be caused by a math library */ __stdargs void _XCEXIT( long dummy ) { } #endif /* __SASC */ /****** mpegvideo.datatype/--datasheed-- ************************************* * * NAME * mpegvideo.datatype -- data type for mpeg video streams * * SUPERCLASS * animation.datatype * * DESCRIPTION * The mpegvideo data type, a sub-class of the animation.datatype, is * used to load and play mpeg 1 video streams (Layer I). * * METHODS * OM_NEW -- Create a new animation object from a description file. The * source may only be a file. * * OM_DISPOSE -- Dispose instance and contents (frames, colormaps etc.), * then pass msg to superclass * * OM_UPDATE -- Perform an ICM_CHECKLOOP check, and if succesfull, the * method will be executed like OM_SET downstairs. * * OM_SET -- Pass msg to superclass, and if the mpegvideo.datatype * instance is the "top instance", call GM_RENDER if retval from * superclass was != 0UL. * * ADTM_LOADFRAME -- Fill in struct adtFrame with requested information * from internal FrameNode list like bitmap, colormap, samples, etc.. * * All other methods are passed unchanged to superclass. * * ATTRIBUTES * Following attributes are set by the object and are READ-ONLY for * applications: * DTA_NominalHoriz -- same as ADTA_Width * DTA_NominalVert -- same as ADTA_Height * DTA_ObjName -- same as DTA_Name * ADTA_Width -- set by video stream * ADTA_Height -- set by video stream * ADTA_Depth -- set by video stream (or by prefs) * ADTA_NumColors -- set by ADTA_Depth or to the num. of * palette entries * ADTA_ColorRegisters -- obj's palette with ADTA_NumColors entries * ADTA_CRegs -- obj's palette with ADTA_NumColors entries * ADTA_Frames -- total number of frames * ADTA_FramesPerSecond -- set by video stream * ADTA_ModeID -- calculated internally or set by prefs * ADTA_KeyFrame -- key frame * ADTA_Sample -- sample (optional, if a sample is attached) * ADTA_SampleLength -- sample length (optional, see ADTA_Sample) * ADTA_Period -- sample period (optional, see ADTA_Sample) * ADTA_Volume -- sample volume (optional, see ADTA_Sample) * ADTA_Cycles -- sample cycle (optional, see ADTA_Sample) * * BUGS * - If the mpeg video stream is not 100% standart conform, * the decoder part of this datatype will CRASH your machine. * Innocent memory will be overwritten !! * * - If you don't have my "paranimdtcpatch" patch running, * animation.datatype (animation.datatype 40.7 (28.09.93)) subclasses * will suffer under timing problems when two or more * animation.datatype objetcs are playing. I've released a matching * patch, DON'T blame me for this bug. Any comments for this problem * should be related to the "paranimdtcpatch" project. * "paranimdtcpatch" is available in the aminet * ("util/dtype/panimdtcptch012.LhA"). * NOTE that animation.datatype V41 does NOT require the patch * anymore. * * - In large videos, the frames at the end will be played slower than * those at the beginning of the file. This is the result of the * sequential search internally used (only serious with more than 25000 * frames (mc68030/50mhz)). * Will be fixed. * * - The LOADALL mode does not work perfectly. It sometimes "forgets" to * fill some frames during loading. * * - The time code in the NOLODALL mode is slightly wrong (I assume up * to +/- 6 frames). * * - The NOPFRAMES and NOBFRAMES options are incompatible with the * NOLOADALL mode. * * - CyberGFX 24 bit output mode uses 32 bit ARGB bitmaps, but the A * (alpha) byte is not set to 0xFF (visible), instead it is set to 0. * The same for 15 bit output mode, where the MSB is a alpha mask bit. * * TODO * - better error handling (and error messages) * * - code cleanup * * - bug fixing * * - Writing an amigaguide document * * - EHB * * HISTORY * V1.1 * First (official) public release. * * V1.2 * Major code cleanup. I decided to rebuild the whole project from * scratch instead of releasing my internal V1.8. The reason is that * many things coded in it wasn't done with the required care. Now * I try to fix this. * * - Sorry, but in the V1.1 release, I've forgotten the COPYRIGHT * notice. Because I don't have the original ones (my code was a * mergin of mpeg_play 1.X, 2.0, I've taken them from the * mpeg_play 2.0 distribution). * * - Implemented the NOPFRAMES and NOBFRAMES switch (for those people * who like it). * * - The loader now returns usefull return codes instead of failing * silently. * * - Decrased the default depth from 7 to 5 planes. This is a more * reliable default value for grayscale mpeg videos (screen or * window). * * - Implemented "DICECOLOR" and "ORDERED" dithering. * The options COLORERROR and DICESKIP are for fine-tuning * speed <--> color output. * * - Introduced MAXFRAME (maximum number of frame to load) and * SKIPFRAMES to allow loading of large videos. * * - MODEID option added (for those which don't like the default * settings). * * - The datatypes descriptor file was WRONG. Now it should be correct. * If not, send me a mail (and if possible, the sample file which * won't work (packed with LhA for compression and CHECKSUMMING). * (Later versions of the descriptor should use additional code * to check the data). * * V1.3 * - COLOR output implemented. * * - DICECOLOR: Found a bug (?? very strange one ??) in my code which * avoids the usage of a frame palette. DICECOLOR was intended * to produce high-quality per frame color remapping instead using * a global anim palette. Broken (e.g. working, but after a frame is * finished, the color table isn't cleared for now...). * * - I found out that the most time is consumed by the WritePixelArray * and copy functions. Later versions should contain a custom * WritePixelArray replacement which should be able to write directly * into FAST-RAM instead of writing into CHIP-RAM and them do a copy * into FAST-RAM. This would save __MUCH__ time. * * - Silly mistake: A * SetIoErr( 0L ); len = FRead( ..., requested ); sequence returns * under various fs IoErr() == (-1L) or something else. The loader * then aborts with this error code. (The code worked with RAM: disk, * my VideoCD-fs ("white book" mode)) and AMICDROM, but wasn't tested * with FFS or something else). * The code now uses Read instead of FRead, checks for * (len != requested), and only if TRUE IoErr() will be checked for * any error. * * - Introduced BUFFER preferences option. * * - A CTRL-D signal send to the loading process now stops the load. * This feature was implemented in V1.2, but I forgot to write it * down here. * * - The autodoc now has a TOC (table of contents). * * - Support for Martin Apel's VMM (Virtual Memory Manager). * (USEVMM switch in prefs file). The bitmaps can now be in virtual * memory (the colormaps are traditional allocated by GetColorMap * and cannot be in virtual memory (not yet nor in the future !)). * The mpegvideo.datatype uses the vmm.library, this allows * virtual memory usage even if the vmm.prefs disables virtual memory * for all other tasks. * NOTE: VMM is Shareware !! * * V1.4 * - vmm.library is now opened on demand (e.g. the USEVMM switch was * set in the prefs file) inside the OM_NEW method. * This fixes two problems: * First: vmm.library was opened even it wasn't used. * Second: OpenLibrary( "vmm.library", ... ) inside the LibInit * function caused various problems. * vmm.library will be closed by LibExpuge function. * * - Removed serial verbose output. Now, if the VERBOSE switch was set * in the prefs file, all verbose output will be printed to * "CON://///auto/wait/close/inactive". * * - Set the SC NOOPTIMIZERPEEPHOLE switch for mc68060 support: * phase5 said that SAS/C 6.56 has a small bug in the peephole * optimizer which may cause trouble with mc68060. The peephole * optimizer will be turned on again if I know more details (and * a workaround). * * - The product of LUM_RANGE * CR_RANGE * CB_RANGE was limited to * a maximum of 512. LUM_RANGE, CR_RANGE, CB_RANGE can now have * any positive value up to 255. A value of 0 is treated as 1, * fixing the problem of a possible division by zero. * * - Found a bug in COLOR dithering, which causes quality loss and * color disorientation. Fixing this bug will take MUCH time. * Not fixed yet. * * - To match the "DataTypes proposal", changes have been made: * 1. The location of the prefs file is now ENV:Classes/DataTypes/ * mpegvideo.prefs instead of ENV:DataTypes/mpegvideo.prefs * 2. Subclasses of mpegvideo.datatype are not supported. Any * attempt to create a subclass object of mpegvideo.datatype * will be rejected by mpegvideo.datatype. * * - Partial code cleanup. I've implemented partial support for * output depths up to 16 bits. Currently, I'm limited to a maximum * depth of 8 bitplanes (e.g. 256 colors) for two reasons: * First, the system WritePixelArray8 function handles only byte * width pen indexes, second, animation.datatype handles only a * bitmaps up to 8 planes. Future releases of animation.datatype may * handle deeper bitplanes. (Custom players like my DBufDTAnim which * are using their own display code are able to display deeper * bitmaps yet.) * * - Found out a little problem: When using VMM (swap file) with * Enforcer, enforcer hits may block your system (occured on a * A2000 Apollo 2030 mc68030 board). * Who knows an answer for this problem ? * * V1.5 * Minor changes to support special compiled versions for 68020+, * fpu etc. * * - Implemented the IGNOREERRORS switch, which attempts to ignore any * error during loading. * * - Removed some dead code. * * V1.6 * The datatypes supports now scaling and sound. Sound was implemented * for two reasons: * 1. For those streams which are distributed with a matching sound * file. * 2. I'm reworking mpegsystem.datatype (which can play system streams, * e.g. video with interleaved audio). The goal is to implement * mpegsystem.datatype as a subclass of mpegvideo.datatype. The * audio stream will be parsed using mpegaudio.datatype. * Note that mpegvideo.datatype is still a GID_ANIMATION type datatype. * The GID_#? idetifiers belongs to the source data, not the * modifications done by a datatype code (a mpeg 1 video stream does * not contain any audio information, the sound is attached later). * * - Implemented the WIDTH and HEIGHT options in the prefs file to * support scaling. * * - Implemented SAMPLE and VOLUME options to support sound. * * - Now uses BestModeID for selecting the screen mode of the * animation. The MODEID preference option overides this. * The old behavior was to set the ADTA_ModeID attribute only if the * MODEID prefs option was set, otherwise the default from * animation.datatype was taken (which was everytimes 0). * * - Fixed the FPS preference option. If it was set, the value was got * from the depth option instead using the given value. * * - Implemented a processing gauge as requested by Allan Odgaard * (Duff@DK-Online.DK) and many other people. The matching * NOPROGRESSGAUGE switch disables it. If the input filehandle is a * pipe, the gauge may not work properly. * * - Implemented a lowermem limit (MINTOTALMEM option) for those * people who wants to see at least the beginning of a big anim * (idea by Allan Odgaard (Duff@DK-Online.DK)). * * - Implemented multi-line preferences, supports comments and * per-project settings (MATCHPROJECT option). The old preference * files/vars are compatible. * * - The stack size for the OM_NEW method is now checked. If the * required size (curretly 12kb) isn't available, a requester will * notify the user and the method returns an error. * * V1.7 * - Recompiled with SAS/C 6.57. Switched the peephole optimizer on * (see V1.4 bugs). * * - Rewrote the DICECOLOR dithering/remapping code. The DICECOLOR * color mode now creates a colormap per frame (animation.datatype * 40.7 does not support these colormap changes per frame (it's * output looks like a color trash). Custom animation players which * uses animation.datatype subclasses for loading (like my * DBufDTAnim) don't have this problem. animation.datatype V41 will * support these colormaps-per-frame. * * I changed the algorithm from a single-pass into a multi-pass * operation, which allows the code to run on other output modes * like ORDERED or FS (Floyd-Steinberg). A side-effect of this * change is that options like COLORERROR and DICESKIP are selected * automatically, which is more user-friendly. * * If you want to get the old DICECOLOR output, use * DITHER=COLOR PALETTEPERFRAME options. * * - The mpegvideo.datatype uses 24 bit-colors internally and * writes 32 bits per (r,b,g) gun. Now the high order bits of each * color gun are replicated through the whole INT32. * * - Fixed a bug in the SAMPLE option, which caused possible crashes. * * - Fixed a bug in LibExpunge (didn't check lib_OpenCnt), which is * also present in all my other external BOOSI classes (and * datatypes). * Thanks to Guenter Niki (gniki@informatik.uni-rostok.de) for * reporting this bug. * * - Implemented the mpeg saving code (mpeg encoder). Currently, * only mpeg-1 streams are written out. * (Will be enabled in the public versions ONLY upon request; * code is currently under construction). * * - Increased the stack requirements from 12kb up to 16kb, mainly * to allow more recursive operations. * * - Implemented random access to frames (e.g you need not to load * the whole animation, decoding is done on the fly). * (Will be enabled in the public versions ONLY upon request; * code is currently under construction, * the matching LOADALL switch it set everytimes). * * V1.8 * - Added partial support for mpeg-2 (MPEG-2 does NOT work yet !), * both encoder+decoder. * * - Added my own WritePixelArray8 replacement, which operates * directly on the fast-mem bitmaps. This saves some internal * copies, chipmem buffer for WPA8 etc. * * - Added my own scaling routine, replacing * graphics.library/BitMapScale (which needs chipmem as temp. * buffer). * Does not work properly yet. * * - Fixed the gauge, which didn't work correctly with large streams * (>= 8MB). * Fixed. * * - The gauge ha now a text info, which shows the remaining time * to decode. * * - Added experimental stack swapping code. The "Need more stack"- * requester has been removed for this reason. * * This also fixes a possible deadlock of "input.device" because * the GM_LAYOUT method was running with low stack. * Fixed. * * - Color table setup now retries color table build with an increased * COLORERROR if table (set by LUM_RANGE * CR_RANGE * CB_RANGE) does * not fit. This allows any #?_RANGE value. * * - Fixed different problems within color setup. Now this should * work with a higher quality, and a little bit faster. * * - Fixed the descriptor, which din't match all mpeg video streams. * Fixed. * * - DTM_WRITE should return ERROR_NOT_IMPLEMENTED if DTWM_RAW mode is * requested (becuase the encoder has been disabled, e.g. commented * out). Now this is correctly done. * Fixed. * * - The mc68060-Version now checks for the AFF_68060 (1L<<7) execbase * flag instead using the AFF_68040. * Fixed. * * - Added QUALITY prefs option and matching float-dct code. * * V1.9 * - Recompiled with SAS/C 6.58. Should fix some mc68060 related * problems. * * - Minor and major housekeeping changes. * * - Added HAM code and HAM dither option as requested by many people. * Thanks to Olaf Barthel for his fast HAM conversion code. * * - DTA_ObjName is now set (and equals to DTA_Name). * * - GM_LAYOUT/DTM_PROCLAYOUT code has been removed because * animation.datatype class does the same. * * - Removed NOREMAP switch (and matching DTM_FRAMEBOX code) because * this was an ugly hack. After all, it seems that MuliView * sets ADTA_Remap to FALSE on it's custom screens, and that * using ADTA_Remap == FALSE on a screen which does not have the * matching size may cause trouble. * * - ADTA_NumColors is now set to the number of used colors instead * of 1UL << anim_depth. This saves some pens when allocating * shared pens on shared screens. * When palette-per-frames are used, the number of colors equals to * 1UL << anim_depth again. * * - Moved scaling code before dithering code. It now scales the lum, * cr, cb data, which is more usefull when doing ordered or HAM * dithering. * * - VMM support seems to be safe... * * - Changed the whole prefs-system. Now the defaults options are more * usefull and are adapted correctly to some settings. * * - DITHER option now defaults to HAM, for those people who don't * like to edit the prefs-file. * * - Added NOPALETTEPERFRAME/S, PFRAMES/S, BFRAMES/S, NOLOADALL/S, * PROGRESSGAUGE/S, NOQUALITY/S switches to support multi-line * prefs-files which uses the MATCHPROJECT feature. * * - Internal timing now uses animation.datatype V41 * ADTA_TicksPerFrame instead of ADTA_FramesPerSecond. This * makes timing more precise. * (ADTA_TicksPerFrame means 1200 / fps, based on realtime.library's * timing model). * * - Increased the decoding the speed a little bit. But this may affect * stability if someone feeds a corrupt mpeg file in the datatype. * I try to fix the problem... * * - Now uses Peter McGavin's (p.mcgavin@irl.cri.nz) WritePixelArray8 * code (the C version). * * - Fixed the encoder stack problem. * * - The encoder now has no problems with dynamic frame delays (e.g. * alf_Duration field in adtFrame). * * - The SKIP option now uses struct adtFrame -> alf_Duration instead * of creating empty frames. This causes that the SKIPFRAMES option * works only with animation.datatype V41. * * - Fixed the bug that the last sample might be too long, which * caused unallocated memory reads (but only a few bytes) and small * clicks at the end of the animation. * * - The startup-code has been rewritten, the code now gurantees that * the order of OpenLibrary and CloseLibrary are correct and in a * more usefull order. * * - Updated the autodoc a little bit. * * V1.10 * INTERNAL RELEASE * * - Large code cleanup. * * - If we reach the file end, we now add a end of sequence code * manually to avoid any problems if we does not see the end code * (this occurs in the NOLOADALL mode in the past...). * * - Removed all remaining parts of "recmpeg". Now I'm allowed to * release the source :-) * * - Moved the encoder to the mpegvideo.datatype V2. * * - Moved the YUV -> 24-bit interleaved-planar to * mpegvideo.datatype V2. * * - Removed the whole MPEG-2 support. mpegvideo.datatype V2 does this * better. * * - Wrote a replacement for the 24 bit planar code (currently * non-interleaved). * * - Rewrote the 24/15/16 bit dither code. * Should fix some visual problems. * * - Fixed the bug that animation.datatype V41 wasn't detected * correctly (the version check didn't match, therefore * any V41 related features were not used). * Fixed. * * - Added GAMMACORRECT and CHROMACORRECT options. * * - Removed BestModeIDA code because animation.datatype does the * same job (better). * * - Fixed the bug that MODEID=0 turns the internal mode selection * on instead of using LORES. * This also requires a change in the prefs behaviour, the * default value for the MODEID option is now "-1". * Fixed. * * - Removed all internal accesses to ADTA_BitMapHeader because they * are unneccesary (dead code). * * - The VERBOSE output is now turned on if a serious error occurs. * * - If frames are skipped (using the NOPFRAMES or NOBFRAMES option) * now the duration of the last frame is increased to get sync * with the stream time. * * - Fixed the bug that the total number of frames might be incorrect * in rare cases. * Fixed. * * - Fixed a bug in the color setup of ORDERED dithering which * caused that the values runned from 0 upto 256 (256 == 0 in an * UBYTE). Now the color values are correctly running from 0-255. * Fixed. * * Fixed the same bug in GRAY dither setup. * Fixed. * * V1.11 * - Enabled the NOLOADALL mode for the public. * * - Small code cleanup to remove some unneccesary parts of code * (mainly the obsolete encoder support). * * - Fixed the bug that the depth of a CyberGFX ARGB bitmap must be 32 * instead of 24. * Fixed. * * - Added some safety in CyerGFX LockBitMap handling (which has a bug * in tag parsing). * * - Added workaround for NOLOADALL mode that ADTM_LOADFRAME returns * 1UL instead of NULL if it forgets a frame (to avoid that the * playback stops...). * Not nice... * * - Fixed a bug in 24bit -> HAM dithering introduced in V1.10. * Fixed. * * - Replaced stack swapping code by a "standard module". * * - Increased the "default" buffer size from 4096 up to 16384. * This makes the gauge less accurate for small streams, but * gives a small speedup when parsing large streams. * * SEE ALSO * animation.datatype, * mpegsystem.datatype, mpegvideo.datatype * picmovie.datatype, * paranimdtcpatch * ******************************************************************************* * */ /*****************************************************************************/ DISPATCHERFLAGS struct IClass *ObtainMPEGVideoEngine( REGA6 struct ClassBase *classbase ) { return( (classbase -> cb_Lib . cl_Class) ); } /*****************************************************************************/ DISPATCHERFLAGS struct Library *LibInit( REGD0 struct ClassBase *classbase, REGA0 BPTR seglist, REGA6 struct ExecBase *sysbase ) { #ifdef USEIEEELIB extern struct Library *MathIeeeDoubBasBase; #endif /* USEIEEELIB */ classbase -> cb_SegList = seglist; classbase -> cb_SysBase = sysbase; InitSemaphore( (&(classbase -> cb_Lock)) ); #ifdef REQUIREDAFF /* Check if the requested cpu/fpu is available*/ if( ((classbase -> cb_SysBase -> AttnFlags) | REQUIREDAFF) != (classbase -> cb_SysBase -> AttnFlags) ) { return( NULL ); } #endif /* REQUIREDAFF */ /* Requires at least Kick 3.0 */ if( (classbase -> cb_SysBase -> LibNode . lib_Version) >= 39UL ) { /* Obtain ROM libs */ if( classbase -> cb_UtilityBase = OpenLibrary( "utility.library", 39UL ) ) { #undef GfxBase if( classbase -> cb_GfxBase = (struct GfxBase *)OpenLibrary( "graphics.library", 39UL ) ) { classbase -> cb_CyberGfxBase = OpenLibrary( CYBERGFXNAME, CYBERGFXVERSION ); if( classbase -> cb_IntuitionBase = OpenLibrary( "intuition.library", 39UL ) ) { if( classbase -> cb_DOSBase = OpenLibrary( "dos.library", 39UL ) ) { #ifdef USEIEEELIB if( MathIeeeDoubBasBase = OpenLibrary( "mathieeedoubbas.library", 38UL ) ) { #endif /* USEIEEELIB */ /* vmm.library will be opened on demand (see dispatch.c) */ classbase -> cb_VMMBase = NULL; return( (&(classbase -> cb_Lib . cl_Lib)) ); #ifdef COMMENTED_OUT CloseLibrary( MathIeeeDoubBasBase ); #endif /* COMMENTED_OUT */ #ifdef USEIEEELIB } CloseLibrary( (classbase -> cb_DOSBase) ); #endif /* USEIEEELIB */ } CloseLibrary( (classbase -> cb_IntuitionBase) ); } CloseLibrary( (classbase -> cb_CyberGfxBase) ); CloseLibrary( (&(classbase -> cb_GfxBase -> LibNode)) ); } CloseLibrary( (classbase -> cb_UtilityBase) ); } } return( NULL ); } /*****************************************************************************/ DISPATCHERFLAGS LONG LibOpen( REGA6 struct ClassBase *classbase ) { LONG retval = (LONG)classbase; BOOL success = TRUE; ObtainSemaphore( (&(classbase -> cb_Lock)) ); /* Use an internal use counter */ classbase -> cb_Lib . cl_Lib . lib_OpenCnt++; classbase -> cb_Lib . cl_Lib . lib_Flags &= ~LIBF_DELEXP; if( (classbase -> cb_Lib . cl_Lib . lib_OpenCnt) == 1U ) { if( (classbase -> cb_Lib . cl_Class) == NULL ) { success = FALSE; if( classbase -> cb_DataTypesBase = OpenLibrary( "datatypes.library", 39UL ) ) { if( classbase -> cb_SuperClassBase = OpenLibrary( "datatypes/animation.datatype", 39UL ) ) { if( classbase -> cb_Lib . cl_Class = initClass( classbase ) ) { success = TRUE; } } } } } if( !success ) { CloseLibrary( (classbase -> cb_SuperClassBase) ); CloseLibrary( (classbase -> cb_DataTypesBase) ); classbase -> cb_DataTypesBase = classbase -> cb_SuperClassBase = NULL; (classbase -> cb_Lib . cl_Lib . lib_OpenCnt)--; retval = 0L; } ReleaseSemaphore( (&(classbase -> cb_Lock)) ); return( retval ); } /*****************************************************************************/ DISPATCHERFLAGS LONG LibClose( REGA6 struct ClassBase *classbase ) { LONG retval = 0L; ObtainSemaphore( (&(classbase -> cb_Lock)) ); if( classbase -> cb_Lib . cl_Lib . lib_OpenCnt ) { (classbase -> cb_Lib . cl_Lib . lib_OpenCnt)--; } if( ((classbase -> cb_Lib . cl_Lib . lib_OpenCnt) == 0U) && (classbase -> cb_Lib . cl_Class) ) { if( FreeClass( (classbase -> cb_Lib . cl_Class) ) ) { classbase -> cb_Lib . cl_Class = NULL; CloseLibrary( (classbase -> cb_SuperClassBase) ); CloseLibrary( (classbase -> cb_DataTypesBase) ); } else { classbase -> cb_Lib . cl_Lib . lib_Flags |= LIBF_DELEXP; } } ReleaseSemaphore( (&(classbase -> cb_Lock)) ); if( (classbase -> cb_Lib . cl_Lib . lib_Flags) & LIBF_DELEXP ) { retval = LibExpunge( classbase ); } return( retval ); } /*****************************************************************************/ DISPATCHERFLAGS LONG LibExpunge( REGA6 struct ClassBase *classbase ) { BPTR seg; #ifdef USEIEEELIB extern struct Library *MathIeeeDoubBasBase; #endif /* USEIEEELIB */ if( classbase -> cb_Lib . cl_Lib . lib_OpenCnt ) { classbase -> cb_Lib . cl_Lib . lib_Flags |= LIBF_DELEXP; seg = NULL; } else { Remove( (&(classbase -> cb_Lib . cl_Lib . lib_Node)) ); seg = classbase -> cb_SegList; CloseLibrary( (classbase -> cb_VMMBase) ); #ifdef USEIEEELIB CloseLibrary( MathIeeeDoubBasBase ); #endif /* USEIEEELIB */ CloseLibrary( (classbase -> cb_DOSBase) ); CloseLibrary( (classbase -> cb_IntuitionBase) ); CloseLibrary( (classbase -> cb_CyberGfxBase) ); CloseLibrary( (&(classbase -> cb_GfxBase -> LibNode)) ); CloseLibrary( (classbase -> cb_UtilityBase) ); FreeMem( (APTR)((ULONG)(classbase) - (ULONG)(classbase -> cb_Lib . cl_Lib . lib_NegSize)), (ULONG)((classbase -> cb_Lib . cl_Lib . lib_NegSize) + (classbase -> cb_Lib . cl_Lib . lib_PosSize)) ); } return( (LONG)seg ); }