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gecko-dev/modules/libimg/mng/libmng_hlapi.c
tor%cs.brown.edu 1baebb60f3 Update to libmng 1.0.3. rs=blizzard
2001-11-01 00:19:53 +00:00

1815 lines
66 KiB
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/* ************************************************************************** */
/* * For conditions of distribution and use, * */
/* * see copyright notice in libmng.h * */
/* ************************************************************************** */
/* * * */
/* * project : libmng * */
/* * file : libmng_hlapi.c copyright (c) 2000 G.Juyn * */
/* * version : 1.0.2 * */
/* * * */
/* * purpose : high-level application API (implementation) * */
/* * * */
/* * author : G.Juyn * */
/* * web : http://www.3-t.com * */
/* * email : mailto:info@3-t.com * */
/* * * */
/* * comment : implementation of the high-level function interface * */
/* * for applications. * */
/* * * */
/* * changes : 0.5.1 - 05/06/2000 - G.Juyn * */
/* * - added init of iPLTEcount * */
/* * 0.5.1 - 05/08/2000 - G.Juyn * */
/* * - changed calling-convention definition * */
/* * - changed status-handling of display-routines * */
/* * - added versioning-control routines * */
/* * - filled the write routine * */
/* * - changed strict-ANSI stuff * */
/* * 0.5.1 - 05/11/2000 - G.Juyn * */
/* * - added callback error-reporting support * */
/* * 0.5.1 - 05/12/2000 - G.Juyn * */
/* * - changed trace to macro for callback error-reporting * */
/* * 0.5.1 - 05/13/2000 - G.Juyn * */
/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */
/* * - added TERM animation object pointer (easier reference) * */
/* * 0.5.1 - 05/14/2000 - G.Juyn * */
/* * - added cleanup of saved-data (SAVE/SEEK processing) * */
/* * 0.5.1 - 05/16/2000 - G.Juyn * */
/* * - moved the actual write_graphic functionality from here * */
/* * to it's appropriate function in the mng_write module * */
/* * * */
/* * 0.5.2 - 05/19/2000 - G.Juyn * */
/* * - cleaned up some code regarding mixed support * */
/* * - added JNG support * */
/* * 0.5.2 - 05/24/2000 - G.Juyn * */
/* * - moved init of default zlib parms here from "mng_zlib.c" * */
/* * - added init of default IJG parms * */
/* * 0.5.2 - 05/29/2000 - G.Juyn * */
/* * - fixed inconsistancy with freeing global iCCP profile * */
/* * 0.5.2 - 05/30/2000 - G.Juyn * */
/* * - added delta-image field initialization * */
/* * 0.5.2 - 06/06/2000 - G.Juyn * */
/* * - added initialization of the buffer-suspend parameter * */
/* * * */
/* * 0.5.3 - 06/16/2000 - G.Juyn * */
/* * - added initialization of update-region for refresh * */
/* * - added initialization of Needrefresh parameter * */
/* * 0.5.3 - 06/17/2000 - G.Juyn * */
/* * - added initialization of Deltaimmediate * */
/* * 0.5.3 - 06/21/2000 - G.Juyn * */
/* * - added initialization of Speed * */
/* * - added initialization of Imagelevel * */
/* * 0.5.3 - 06/26/2000 - G.Juyn * */
/* * - changed userdata variable to mng_ptr * */
/* * 0.5.3 - 06/29/2000 - G.Juyn * */
/* * - fixed initialization routine for new mng_handle type * */
/* * * */
/* * 0.9.1 - 07/06/2000 - G.Juyn * */
/* * - changed mng_display_resume to allow to be called after * */
/* * a suspension return with MNG_NEEDMOREDATA * */
/* * - added returncode MNG_NEEDTIMERWAIT for timer breaks * */
/* * 0.9.1 - 07/07/2000 - G.Juyn * */
/* * - implemented support for freeze/reset/resume & go_xxxx * */
/* * 0.9.1 - 07/08/2000 - G.Juyn * */
/* * - added support for improved timing * */
/* * - added support for improved I/O-suspension * */
/* * 0.9.1 - 07/14/2000 - G.Juyn * */
/* * - changed EOF processing behavior * */
/* * 0.9.1 - 07/15/2000 - G.Juyn * */
/* * - added callbacks for SAVE/SEEK processing * */
/* * - added variable for NEEDSECTIONWAIT breaks * */
/* * - added variable for freeze & reset processing * */
/* * 0.9.1 - 07/17/2000 - G.Juyn * */
/* * - added error cleanup processing * */
/* * - fixed support for mng_display_reset() * */
/* * - fixed suspension-buffering for 32K+ chunks * */
/* * * */
/* * 0.9.2 - 07/29/2000 - G.Juyn * */
/* * - fixed small bugs in display processing * */
/* * 0.9.2 - 07/31/2000 - G.Juyn * */
/* * - fixed wrapping of suspension parameters * */
/* * 0.9.2 - 08/04/2000 - G.Juyn * */
/* * - B111096 - fixed large-buffer read-suspension * */
/* * 0.9.2 - 08/05/2000 - G.Juyn * */
/* * - changed file-prefixes * */
/* * * */
/* * 0.9.3 - 09/07/2000 - G.Juyn * */
/* * - added support for new filter_types * */
/* * 0.9.3 - 09/10/2000 - G.Juyn * */
/* * - fixed DEFI behavior * */
/* * 0.9.3 - 10/11/2000 - G.Juyn * */
/* * - added support for nEED * */
/* * 0.9.3 - 10/16/2000 - G.Juyn * */
/* * - added optional support for bKGD for PNG images * */
/* * - raised initial maximum canvas size * */
/* * - added support for JDAA * */
/* * 0.9.3 - 10/17/2000 - G.Juyn * */
/* * - added callback to process non-critical unknown chunks * */
/* * - fixed support for delta-images during read() / display() * */
/* * 0.9.3 - 10/18/2000 - G.Juyn * */
/* * - added closestream() processing for mng_cleanup() * */
/* * 0.9.3 - 10/27/2000 - G.Juyn * */
/* * - fixed seperate read() & display() processing * */
/* * * */
/* * 0.9.4 - 11/20/2000 - G.Juyn * */
/* * - fixed unwanted repetition in mng_readdisplay() * */
/* * 0.9.4 - 11/24/2000 - G.Juyn * */
/* * - moved restore of object 0 to libmng_display * */
/* * * */
/* * 1.0.1 - 02/08/2001 - G.Juyn * */
/* * - added MEND processing callback * */
/* * 1.0.1 - 02/13/2001 - G.Juyn * */
/* * - fixed first FRAM_MODE=4 timing problem * */
/* * 1.0.1 - 04/21/2001 - G.Juyn * */
/* * - fixed bug with display_reset/display_resume (Thanks G!) * */
/* * 1.0.1 - 04/22/2001 - G.Juyn * */
/* * - fixed memory-leak (Thanks Gregg!) * */
/* * 1.0.1 - 04/23/2001 - G.Juyn * */
/* * - fixed reset_rundata to drop all objects * */
/* * 1.0.1 - 04/25/2001 - G.Juyn * */
/* * - moved mng_clear_cms to libmng_cms * */
/* * * */
/* * 1.0.2 - 06/23/2001 - G.Juyn * */
/* * - added optimization option for MNG-video playback * */
/* * - added processterm callback * */
/* * 1.0.2 - 06/25/2001 - G.Juyn * */
/* * - added option to turn off progressive refresh * */
/* * * */
/* ************************************************************************** */
#include "libmng.h"
#include "libmng_data.h"
#include "libmng_error.h"
#include "libmng_trace.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "libmng_objects.h"
#include "libmng_object_prc.h"
#include "libmng_chunks.h"
#include "libmng_memory.h"
#include "libmng_read.h"
#include "libmng_write.h"
#include "libmng_display.h"
#include "libmng_zlib.h"
#include "libmng_jpeg.h"
#include "libmng_cms.h"
#include "libmng_pixels.h"
#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
#pragma option -A /* force ANSI-C */
#endif
/* ************************************************************************** */
/* * * */
/* * local routines * */
/* * * */
/* ************************************************************************** */
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
mng_retcode mng_drop_chunks (mng_datap pData)
{
mng_chunkp pChunk;
mng_chunkp pNext;
mng_cleanupchunk fCleanup;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DROP_CHUNKS, MNG_LC_START)
#endif
pChunk = pData->pFirstchunk; /* and get first stored chunk (if any) */
while (pChunk) /* more chunks to discard ? */
{
pNext = ((mng_chunk_headerp)pChunk)->pNext;
/* call appropriate cleanup */
fCleanup = ((mng_chunk_headerp)pChunk)->fCleanup;
fCleanup (pData, pChunk);
pChunk = pNext; /* neeeext */
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DROP_CHUNKS, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode mng_drop_objects (mng_datap pData,
mng_bool bDropaniobj)
{
mng_objectp pObject;
mng_objectp pNext;
mng_cleanupobject fCleanup;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_START)
#endif
pObject = pData->pFirstimgobj; /* get first stored image-object (if any) */
while (pObject) /* more objects to discard ? */
{
pNext = ((mng_object_headerp)pObject)->pNext;
/* call appropriate cleanup */
fCleanup = ((mng_object_headerp)pObject)->fCleanup;
fCleanup (pData, pObject);
pObject = pNext; /* neeeext */
}
pData->pFirstimgobj = MNG_NULL; /* clean this up!!! */
if (bDropaniobj) /* drop animation objects ? */
{
pObject = pData->pFirstaniobj; /* get first stored animation-object (if any) */
while (pObject) /* more objects to discard ? */
{
pNext = ((mng_object_headerp)pObject)->pNext;
/* call appropriate cleanup */
fCleanup = ((mng_object_headerp)pObject)->fCleanup;
fCleanup (pData, pObject);
pObject = pNext; /* neeeext */
}
pData->pFirstaniobj = MNG_NULL; /* clean this up!!! */
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode mng_drop_savedata (mng_datap pData)
{
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_START)
#endif
if (pData->pSavedata) /* sanity check */
{ /* address it more directly */
mng_savedatap pSave = pData->pSavedata;
if (pSave->iGlobalProfilesize) /* cleanup the profile ? */
MNG_FREEX (pData, pSave->pGlobalProfile, pSave->iGlobalProfilesize)
/* cleanup the save structure */
MNG_FREE (pData, pData->pSavedata, sizeof (mng_savedata))
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode mng_reset_rundata (mng_datap pData)
{
drop_invalid_objects (pData); /* drop invalidly stored objects */
mng_drop_savedata (pData); /* drop stored savedata */
mng_reset_objzero (pData); /* reset object 0 */
/* drop stored objects (if any) */
mng_drop_objects (pData, MNG_FALSE);
pData->bFramedone = MNG_FALSE;
pData->iFrameseq = 0; /* reset counters & stuff */
pData->iLayerseq = 0;
pData->iFrametime = 0;
pData->iRequestframe = 0;
pData->iRequestlayer = 0;
pData->iRequesttime = 0;
pData->bSearching = MNG_FALSE;
pData->iRuntime = 0;
pData->iSynctime = 0;
pData->iStarttime = 0;
pData->iEndtime = 0;
pData->bRunning = MNG_FALSE;
pData->bTimerset = MNG_FALSE;
pData->iBreakpoint = 0;
pData->bSectionwait = MNG_FALSE;
pData->bFreezing = MNG_FALSE;
pData->bResetting = MNG_FALSE;
pData->bNeedrefresh = MNG_FALSE;
pData->iIterations = 0;
/* start of animation objects! */
pData->pCurraniobj = MNG_NULL;
pData->iUpdateleft = 0; /* reset region */
pData->iUpdateright = 0;
pData->iUpdatetop = 0;
pData->iUpdatebottom = 0;
pData->iPLTEcount = 0; /* reset PLTE data */
pData->iDEFIobjectid = 0; /* reset DEFI data */
pData->bDEFIhasdonotshow = MNG_FALSE;
pData->iDEFIdonotshow = 0;
pData->bDEFIhasconcrete = MNG_FALSE;
pData->iDEFIconcrete = 0;
pData->bDEFIhasloca = MNG_FALSE;
pData->iDEFIlocax = 0;
pData->iDEFIlocay = 0;
pData->bDEFIhasclip = MNG_FALSE;
pData->iDEFIclipl = 0;
pData->iDEFIclipr = 0;
pData->iDEFIclipt = 0;
pData->iDEFIclipb = 0;
pData->iBACKred = 0; /* reset BACK data */
pData->iBACKgreen = 0;
pData->iBACKblue = 0;
pData->iBACKmandatory = 0;
pData->iBACKimageid = 0;
pData->iBACKtile = 0;
pData->iFRAMmode = 1; /* default global FRAM variables */
pData->iFRAMdelay = 1;
pData->iFRAMtimeout = 0x7fffffffl;
pData->bFRAMclipping = MNG_FALSE;
pData->iFRAMclipl = 0;
pData->iFRAMclipr = 0;
pData->iFRAMclipt = 0;
pData->iFRAMclipb = 0;
pData->iFramemode = 1; /* again for the current frame */
pData->iFramedelay = 1;
pData->iFrametimeout = 0x7fffffffl;
pData->bFrameclipping = MNG_FALSE;
pData->iFrameclipl = 0;
pData->iFrameclipr = 0;
pData->iFrameclipt = 0;
pData->iFrameclipb = 0;
pData->iNextdelay = 1;
pData->iSHOWmode = 0; /* reset SHOW data */
pData->iSHOWfromid = 0;
pData->iSHOWtoid = 0;
pData->iSHOWnextid = 0;
pData->iSHOWskip = 0;
pData->iGlobalPLTEcount = 0; /* reset global PLTE data */
pData->iGlobalTRNSrawlen = 0; /* reset global tRNS data */
pData->iGlobalGamma = 0; /* reset global gAMA data */
pData->iGlobalWhitepointx = 0; /* reset global cHRM data */
pData->iGlobalWhitepointy = 0;
pData->iGlobalPrimaryredx = 0;
pData->iGlobalPrimaryredy = 0;
pData->iGlobalPrimarygreenx = 0;
pData->iGlobalPrimarygreeny = 0;
pData->iGlobalPrimarybluex = 0;
pData->iGlobalPrimarybluey = 0;
pData->iGlobalRendintent = 0; /* reset global sRGB data */
if (pData->iGlobalProfilesize) /* drop global profile (if any) */
MNG_FREE (pData, pData->pGlobalProfile, pData->iGlobalProfilesize)
pData->iGlobalProfilesize = 0;
pData->iGlobalBKGDred = 0; /* reset global bKGD data */
pData->iGlobalBKGDgreen = 0;
pData->iGlobalBKGDblue = 0;
/* reset delta-image */
pData->pDeltaImage = MNG_NULL;
pData->iDeltaImagetype = 0;
pData->iDeltatype = 0;
pData->iDeltaBlockwidth = 0;
pData->iDeltaBlockheight = 0;
pData->iDeltaBlockx = 0;
pData->iDeltaBlocky = 0;
pData->bDeltaimmediate = MNG_FALSE;
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
void cleanup_errors (mng_datap pData)
{
pData->iErrorcode = MNG_NOERROR;
pData->iSeverity = 0;
pData->iErrorx1 = 0;
pData->iErrorx2 = 0;
pData->zErrortext = MNG_NULL;
return;
}
/* ************************************************************************** */
/* * * */
/* * Versioning control * */
/* * * */
/* ************************************************************************** */
mng_pchar MNG_DECL mng_version_text (void)
{
return MNG_VERSION_TEXT;
}
/* ************************************************************************** */
mng_uint8 MNG_DECL mng_version_so (void)
{
return MNG_VERSION_SO;
}
/* ************************************************************************** */
mng_uint8 MNG_DECL mng_version_dll (void)
{
return MNG_VERSION_DLL;
}
/* ************************************************************************** */
mng_uint8 MNG_DECL mng_version_major (void)
{
return MNG_VERSION_MAJOR;
}
/* ************************************************************************** */
mng_uint8 MNG_DECL mng_version_minor (void)
{
return MNG_VERSION_MINOR;
}
/* ************************************************************************** */
mng_uint8 MNG_DECL mng_version_release (void)
{
return MNG_VERSION_RELEASE;
}
/* ************************************************************************** */
/* * * */
/* * HLAPI routines * */
/* * * */
/* ************************************************************************** */
mng_handle MNG_DECL mng_initialize (mng_ptr pUserdata,
mng_memalloc fMemalloc,
mng_memfree fMemfree,
mng_traceproc fTraceproc)
{
mng_datap pData;
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode iRetcode;
mng_imagep pImage;
#endif
#ifdef MNG_INTERNAL_MEMMNGMT /* allocate the main datastruc */
pData = (mng_datap)calloc (1, sizeof (mng_data));
#else
pData = (mng_datap)fMemalloc (sizeof (mng_data));
#endif
if (!pData)
return MNG_NULL; /* error: out of memory?? */
/* validate the structure */
pData->iMagic = MNG_MAGIC;
/* save userdata field */
pData->pUserdata = pUserdata;
/* remember trace callback */
pData->fTraceproc = fTraceproc;
#ifdef MNG_SUPPORT_TRACE
if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_INITIALIZE))
{
MNG_FREEX (pData, pData, sizeof (mng_data))
return MNG_NULL;
}
#endif
/* default canvas styles are 8-bit RGB */
pData->iCanvasstyle = MNG_CANVAS_RGB8;
pData->iBkgdstyle = MNG_CANVAS_RGB8;
pData->iBGred = 0; /* black */
pData->iBGgreen = 0;
pData->iBGblue = 0;
pData->bUseBKGD = MNG_TRUE;
#ifdef MNG_FULL_CMS
pData->bIssRGB = MNG_TRUE;
pData->hProf1 = 0; /* no profiles yet */
pData->hProf2 = 0;
pData->hProf3 = 0;
pData->hTrans = 0;
#endif
pData->dViewgamma = 1.0;
pData->dDisplaygamma = 2.2;
pData->dDfltimggamma = 0.45455;
/* initially remember chunks */
pData->bStorechunks = MNG_TRUE;
/* no breaks at section-borders */
pData->bSectionbreaks = MNG_FALSE;
/* initially cache playback info */
pData->bCacheplayback = MNG_TRUE;
/* progressive refresh for large images */
pData->bDoProgressive = MNG_TRUE;
/* normal animation-speed ! */
pData->iSpeed = mng_st_normal;
/* initial image limits */
pData->iMaxwidth = 10000;
pData->iMaxheight = 10000;
#ifdef MNG_INTERNAL_MEMMNGMT /* internal management */
pData->fMemalloc = MNG_NULL;
pData->fMemfree = MNG_NULL;
#else /* keep callbacks */
pData->fMemalloc = fMemalloc;
pData->fMemfree = fMemfree;
#endif
/* no value (yet) */
pData->fOpenstream = MNG_NULL;
pData->fClosestream = MNG_NULL;
pData->fReaddata = MNG_NULL;
pData->fWritedata = MNG_NULL;
pData->fErrorproc = MNG_NULL;
pData->fProcessheader = MNG_NULL;
pData->fProcesstext = MNG_NULL;
pData->fProcesssave = MNG_NULL;
pData->fProcessseek = MNG_NULL;
pData->fProcessneed = MNG_NULL;
pData->fProcessmend = MNG_NULL;
pData->fProcessunknown = MNG_NULL;
pData->fProcessterm = MNG_NULL;
pData->fGetcanvasline = MNG_NULL;
pData->fGetbkgdline = MNG_NULL;
pData->fGetalphaline = MNG_NULL;
pData->fRefresh = MNG_NULL;
pData->fGettickcount = MNG_NULL;
pData->fSettimer = MNG_NULL;
pData->fProcessgamma = MNG_NULL;
pData->fProcesschroma = MNG_NULL;
pData->fProcesssrgb = MNG_NULL;
pData->fProcessiccp = MNG_NULL;
pData->fProcessarow = MNG_NULL;
#if defined(MNG_SUPPORT_DISPLAY) && (defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS))
pData->dLastgamma = 0; /* lookup table needs first-time calc */
#endif
#ifdef MNG_SUPPORT_DISPLAY /* create object 0 */
iRetcode = create_imageobject (pData, 0, MNG_TRUE, MNG_TRUE, MNG_TRUE,
0, 0, 0, 0, 0, 0, 0, 0, 0, MNG_FALSE,
0, 0, 0, 0, &pImage);
if (iRetcode) /* on error drop out */
{
MNG_FREEX (pData, pData, sizeof (mng_data))
return MNG_NULL;
}
pData->pObjzero = pImage;
#endif
#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_LCMS)
mnglcms_initlibrary (); /* init lcms particulairs */
#endif
#ifdef MNG_SUPPORT_READ
pData->bSuspensionmode = MNG_FALSE;
pData->iSuspendbufsize = 0;
pData->pSuspendbuf = MNG_NULL;
pData->pSuspendbufnext = MNG_NULL;
pData->iSuspendbufleft = 0;
pData->iChunklen = 0;
pData->pReadbufnext = MNG_NULL;
#endif
#ifdef MNG_INCLUDE_ZLIB
mngzlib_initialize (pData); /* initialize zlib structures and such */
/* default zlib compression parameters */
pData->iZlevel = MNG_ZLIB_LEVEL;
pData->iZmethod = MNG_ZLIB_METHOD;
pData->iZwindowbits = MNG_ZLIB_WINDOWBITS;
pData->iZmemlevel = MNG_ZLIB_MEMLEVEL;
pData->iZstrategy = MNG_ZLIB_STRATEGY;
/* default maximum IDAT data size */
pData->iMaxIDAT = MNG_MAX_IDAT_SIZE;
#endif
#ifdef MNG_INCLUDE_JNG /* default IJG compression parameters */
pData->eJPEGdctmethod = MNG_JPEG_DCT;
pData->iJPEGquality = MNG_JPEG_QUALITY;
pData->iJPEGsmoothing = MNG_JPEG_SMOOTHING;
pData->bJPEGcompressprogr = MNG_JPEG_PROGRESSIVE;
pData->bJPEGcompressopt = MNG_JPEG_OPTIMIZED;
/* default maximum JDAT data size */
pData->iMaxJDAT = MNG_MAX_JDAT_SIZE;
#endif
mng_reset ((mng_handle)pData);
#ifdef MNG_SUPPORT_TRACE
if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_END))
{
MNG_FREEX (pData, pData, sizeof (mng_data))
return MNG_NULL;
}
#endif
return (mng_handle)pData; /* if we get here, we're in business */
}
/* ************************************************************************** */
mng_retcode MNG_DECL mng_reset (mng_handle hHandle)
{
mng_datap pData;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)(hHandle)); /* address main structure */
#ifdef MNG_SUPPORT_DISPLAY
mng_drop_savedata (pData); /* cleanup saved-data from SAVE/SEEK */
#endif
#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_FULL_CMS)
mng_clear_cms (pData); /* cleanup left-over cms stuff if any */
#endif
#ifdef MNG_INCLUDE_JNG
mngjpeg_cleanup (pData); /* cleanup jpeg stuff */
#endif
#ifdef MNG_INCLUDE_ZLIB
if (pData->bInflating) /* if we've been inflating */
{
#ifdef MNG_INCLUDE_DISPLAY_PROCS
cleanup_rowproc (pData); /* cleanup row-processing, */
#endif
mngzlib_inflatefree (pData); /* cleanup inflate! */
}
#endif /* MNG_INCLUDE_ZLIB */
#ifdef MNG_SUPPORT_READ
if ((pData->bReading) && (!pData->bEOF))
process_eof (pData); /* cleanup app streaming */
/* cleanup default read buffers */
MNG_FREE (pData, pData->pReadbuf, pData->iReadbufsize)
MNG_FREE (pData, pData->pLargebuf, pData->iLargebufsize)
MNG_FREE (pData, pData->pSuspendbuf, pData->iSuspendbufsize)
#endif
#ifdef MNG_SUPPORT_WRITE /* cleanup default write buffer */
MNG_FREE (pData, pData->pWritebuf, pData->iWritebufsize)
#endif
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
mng_drop_chunks (pData); /* drop stored chunks (if any) */
#endif
#ifdef MNG_SUPPORT_DISPLAY
mng_drop_objects (pData, MNG_TRUE); /* drop stored objects (if any) */
if (pData->iGlobalProfilesize) /* drop global profile (if any) */
MNG_FREEX (pData, pData->pGlobalProfile, pData->iGlobalProfilesize)
#endif
pData->eSigtype = mng_it_unknown;
pData->eImagetype = mng_it_unknown;
pData->iWidth = 0; /* these are unknown yet */
pData->iHeight = 0;
pData->iTicks = 0;
pData->iLayercount = 0;
pData->iFramecount = 0;
pData->iPlaytime = 0;
pData->iSimplicity = 0;
pData->iAlphadepth = 16; /* assume the worst! */
pData->iImagelevel = 0; /* no image encountered */
pData->iMagnify = 0; /* 1-to-1 display */
pData->iOffsetx = 0; /* no offsets */
pData->iOffsety = 0;
pData->iCanvaswidth = 0; /* let the app decide during processheader */
pData->iCanvasheight = 0;
/* so far, so good */
pData->iErrorcode = MNG_NOERROR;
pData->iSeverity = 0;
pData->iErrorx1 = 0;
pData->iErrorx2 = 0;
pData->zErrortext = MNG_NULL;
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
/* let's assume the best scenario */
pData->bPreDraft48 = MNG_FALSE;
/* the unknown chunk */
pData->iChunkname = MNG_UINT_HUH;
pData->iChunkseq = 0;
pData->pFirstchunk = MNG_NULL;
pData->pLastchunk = MNG_NULL;
/* nothing processed yet */
pData->bHasheader = MNG_FALSE;
pData->bHasMHDR = MNG_FALSE;
pData->bHasIHDR = MNG_FALSE;
pData->bHasBASI = MNG_FALSE;
pData->bHasDHDR = MNG_FALSE;
#ifdef MNG_INCLUDE_JNG
pData->bHasJHDR = MNG_FALSE;
pData->bHasJSEP = MNG_FALSE;
pData->bHasJDAA = MNG_FALSE;
pData->bHasJDAT = MNG_FALSE;
#endif
pData->bHasPLTE = MNG_FALSE;
pData->bHasTRNS = MNG_FALSE;
pData->bHasGAMA = MNG_FALSE;
pData->bHasCHRM = MNG_FALSE;
pData->bHasSRGB = MNG_FALSE;
pData->bHasICCP = MNG_FALSE;
pData->bHasBKGD = MNG_FALSE;
pData->bHasIDAT = MNG_FALSE;
pData->bHasSAVE = MNG_FALSE;
pData->bHasBACK = MNG_FALSE;
pData->bHasFRAM = MNG_FALSE;
pData->bHasTERM = MNG_FALSE;
pData->bHasLOOP = MNG_FALSE;
/* there's no global stuff yet either */
pData->bHasglobalPLTE = MNG_FALSE;
pData->bHasglobalTRNS = MNG_FALSE;
pData->bHasglobalGAMA = MNG_FALSE;
pData->bHasglobalCHRM = MNG_FALSE;
pData->bHasglobalSRGB = MNG_FALSE;
pData->bHasglobalICCP = MNG_FALSE;
pData->iDatawidth = 0; /* no IHDR/BASI/DHDR done yet */
pData->iDataheight = 0;
pData->iBitdepth = 0;
pData->iColortype = 0;
pData->iCompression = 0;
pData->iFilter = 0;
pData->iInterlace = 0;
#ifdef MNG_INCLUDE_JNG
pData->iJHDRcolortype = 0; /* no JHDR data */
pData->iJHDRimgbitdepth = 0;
pData->iJHDRimgcompression = 0;
pData->iJHDRimginterlace = 0;
pData->iJHDRalphabitdepth = 0;
pData->iJHDRalphacompression = 0;
pData->iJHDRalphafilter = 0;
pData->iJHDRalphainterlace = 0;
#endif
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
#ifdef MNG_SUPPORT_READ /* no reading done */
pData->bReading = MNG_FALSE;
pData->bHavesig = MNG_FALSE;
pData->bEOF = MNG_FALSE;
pData->iReadbufsize = 0;
pData->pReadbuf = MNG_NULL;
pData->iLargebufsize = 0;
pData->pLargebuf = MNG_NULL;
pData->iSuspendtime = 0;
pData->bSuspended = MNG_FALSE;
pData->iSuspendpoint = 0;
pData->pSuspendbufnext = pData->pSuspendbuf;
pData->iSuspendbufleft = 0;
#endif /* MNG_SUPPORT_READ */
#ifdef MNG_SUPPORT_WRITE /* no creating/writing done */
pData->bCreating = MNG_FALSE;
pData->bWriting = MNG_FALSE;
pData->iFirstchunkadded = 0;
pData->iWritebufsize = 0;
pData->pWritebuf = MNG_NULL;
#endif /* MNG_SUPPORT_WRITE */
#ifdef MNG_SUPPORT_DISPLAY /* done nuttin' yet */
pData->bDisplaying = MNG_FALSE;
pData->iFrameseq = 0;
pData->iLayerseq = 0;
pData->iFrametime = 0;
pData->iRequestframe = 0;
pData->iRequestlayer = 0;
pData->iRequesttime = 0;
pData->bSearching = MNG_FALSE;
pData->bRestorebkgd = MNG_FALSE;
pData->iRuntime = 0;
pData->iSynctime = 0;
pData->iStarttime = 0;
pData->iEndtime = 0;
pData->bRunning = MNG_FALSE;
pData->bTimerset = MNG_FALSE;
pData->iBreakpoint = 0;
pData->bSectionwait = MNG_FALSE;
pData->bFreezing = MNG_FALSE;
pData->bResetting = MNG_FALSE;
pData->bNeedrefresh = MNG_FALSE;
/* these don't exist yet */
pData->pCurrentobj = MNG_NULL;
pData->pCurraniobj = MNG_NULL;
pData->pTermaniobj = MNG_NULL;
pData->pLastclone = MNG_NULL;
pData->pStoreobj = MNG_NULL;
pData->pStorebuf = MNG_NULL;
pData->pRetrieveobj = MNG_NULL;
/* no saved data ! */
pData->pSavedata = MNG_NULL;
/* TODO: remove in 1.0.0 !!! */
pData->bEMNGMAhack = MNG_FALSE;
pData->iUpdateleft = 0; /* no region updated yet */
pData->iUpdateright = 0;
pData->iUpdatetop = 0;
pData->iUpdatebottom = 0;
pData->iPass = -1; /* interlacing stuff and temp buffers */
pData->iRow = 0;
pData->iRowinc = 1;
pData->iCol = 0;
pData->iColinc = 1;
pData->iRowsamples = 0;
pData->iSamplemul = 0;
pData->iSampleofs = 0;
pData->iSamplediv = 0;
pData->iRowsize = 0;
pData->iRowmax = 0;
pData->iFilterofs = 0;
pData->iPixelofs = 1;
pData->iLevel0 = 0;
pData->iLevel1 = 0;
pData->iLevel2 = 0;
pData->iLevel3 = 0;
pData->pWorkrow = MNG_NULL;
pData->pPrevrow = MNG_NULL;
pData->pRGBArow = 0;
pData->bIsRGBA16 = MNG_TRUE;
pData->bIsOpaque = MNG_TRUE;
pData->iFilterbpp = 1;
pData->iSourcel = 0; /* always initialized just before */
pData->iSourcer = 0; /* compositing the next layer */
pData->iSourcet = 0;
pData->iSourceb = 0;
pData->iDestl = 0;
pData->iDestr = 0;
pData->iDestt = 0;
pData->iDestb = 0;
/* lists are empty */
pData->pFirstimgobj = MNG_NULL;
pData->pLastimgobj = MNG_NULL;
pData->pFirstaniobj = MNG_NULL;
pData->pLastaniobj = MNG_NULL;
/* no processing callbacks */
pData->fDisplayrow = MNG_NULL;
pData->fRestbkgdrow = MNG_NULL;
pData->fCorrectrow = MNG_NULL;
pData->fRetrieverow = MNG_NULL;
pData->fStorerow = MNG_NULL;
pData->fProcessrow = MNG_NULL;
pData->fDifferrow = MNG_NULL;
pData->fInitrowproc = MNG_NULL;
pData->iPLTEcount = 0; /* no PLTE data */
pData->iDEFIobjectid = 0; /* no DEFI data */
pData->bDEFIhasdonotshow = MNG_FALSE;
pData->iDEFIdonotshow = 0;
pData->bDEFIhasconcrete = MNG_FALSE;
pData->iDEFIconcrete = 0;
pData->bDEFIhasloca = MNG_FALSE;
pData->iDEFIlocax = 0;
pData->iDEFIlocay = 0;
pData->bDEFIhasclip = MNG_FALSE;
pData->iDEFIclipl = 0;
pData->iDEFIclipr = 0;
pData->iDEFIclipt = 0;
pData->iDEFIclipb = 0;
pData->iBACKred = 0; /* no BACK data */
pData->iBACKgreen = 0;
pData->iBACKblue = 0;
pData->iBACKmandatory = 0;
pData->iBACKimageid = 0;
pData->iBACKtile = 0;
pData->iFRAMmode = 1; /* default global FRAM variables */
pData->iFRAMdelay = 1;
pData->iFRAMtimeout = 0x7fffffffl;
pData->bFRAMclipping = MNG_FALSE;
pData->iFRAMclipl = 0;
pData->iFRAMclipr = 0;
pData->iFRAMclipt = 0;
pData->iFRAMclipb = 0;
pData->iFramemode = 1; /* again for the current frame */
pData->iFramedelay = 1;
pData->iFrametimeout = 0x7fffffffl;
pData->bFrameclipping = MNG_FALSE;
pData->iFrameclipl = 0;
pData->iFrameclipr = 0;
pData->iFrameclipt = 0;
pData->iFrameclipb = 0;
pData->iNextdelay = 1;
pData->iSHOWmode = 0; /* no SHOW data */
pData->iSHOWfromid = 0;
pData->iSHOWtoid = 0;
pData->iSHOWnextid = 0;
pData->iSHOWskip = 0;
pData->iGlobalPLTEcount = 0; /* no global PLTE data */
pData->iGlobalTRNSrawlen = 0; /* no global tRNS data */
pData->iGlobalGamma = 0; /* no global gAMA data */
pData->iGlobalWhitepointx = 0; /* no global cHRM data */
pData->iGlobalWhitepointy = 0;
pData->iGlobalPrimaryredx = 0;
pData->iGlobalPrimaryredy = 0;
pData->iGlobalPrimarygreenx = 0;
pData->iGlobalPrimarygreeny = 0;
pData->iGlobalPrimarybluex = 0;
pData->iGlobalPrimarybluey = 0;
pData->iGlobalRendintent = 0; /* no global sRGB data */
pData->iGlobalProfilesize = 0; /* no global iCCP data */
pData->pGlobalProfile = MNG_NULL;
pData->iGlobalBKGDred = 0; /* no global bKGD data */
pData->iGlobalBKGDgreen = 0;
pData->iGlobalBKGDblue = 0;
/* no delta-image */
pData->pDeltaImage = MNG_NULL;
pData->iDeltaImagetype = 0;
pData->iDeltatype = 0;
pData->iDeltaBlockwidth = 0;
pData->iDeltaBlockheight = 0;
pData->iDeltaBlockx = 0;
pData->iDeltaBlocky = 0;
pData->bDeltaimmediate = MNG_FALSE;
#endif
#ifdef MNG_INCLUDE_ZLIB
pData->bInflating = 0; /* no inflating or deflating */
pData->bDeflating = 0; /* going on at the moment */
#endif
#ifdef MNG_SUPPORT_DISPLAY /* reset object 0 */
mng_reset_objzero (pData);
#endif
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode MNG_DECL mng_cleanup (mng_handle* hHandle)
{
mng_datap pData; /* local vars */
#ifndef MNG_INTERNAL_MEMMNGMT
mng_memfree fFree;
#endif
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_START)
#endif
MNG_VALIDHANDLE (*hHandle) /* check validity handle */
pData = ((mng_datap)(*hHandle)); /* and address main structure */
mng_reset (*hHandle); /* do an implicit reset to cleanup most stuff */
#ifdef MNG_SUPPORT_DISPLAY /* drop object 0 */
free_imageobject (pData, (mng_imagep)pData->pObjzero);
#endif
#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_LCMS)
if (pData->hProf2) /* output profile defined ? */
mnglcms_freeprofile (pData->hProf2);
if (pData->hProf3) /* sRGB profile defined ? */
mnglcms_freeprofile (pData->hProf3);
#endif /* MNG_SUPPORT_DISPLAY && MNG_INCLUDE_LCMS */
#ifdef MNG_INCLUDE_ZLIB
mngzlib_cleanup (pData); /* cleanup zlib stuff */
#endif
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_CLEANUP)
#endif
pData->iMagic = 0; /* invalidate the actual memory */
#ifdef MNG_INTERNAL_MEMMNGMT
free ((void *)*hHandle); /* cleanup the data-structure */
#else
fFree = ((mng_datap)*hHandle)->fMemfree;
fFree ((mng_ptr)*hHandle, sizeof (mng_data));
#endif
*hHandle = 0; /* wipe pointer to inhibit future use */
return MNG_NOERROR; /* and we're done */
}
/* ************************************************************************** */
#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_read (mng_handle hHandle)
{
mng_datap pData; /* local vars */
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
pData = ((mng_datap)hHandle); /* and make it addressable */
#ifndef MNG_INTERNAL_MEMMNGMT
MNG_VALIDCB (hHandle, fMemalloc)
MNG_VALIDCB (hHandle, fMemfree)
#endif
MNG_VALIDCB (hHandle, fOpenstream)
MNG_VALIDCB (hHandle, fClosestream)
MNG_VALIDCB (hHandle, fReaddata)
#ifdef MNG_SUPPORT_DISPLAY /* valid at this point ? */
if ((pData->bReading) || (pData->bDisplaying))
#else
if (pData->bReading)
#endif
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#ifdef MNG_SUPPORT_WRITE
if ((pData->bWriting) || (pData->bCreating))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#endif
if (!pData->bCacheplayback) /* must store playback info to work!! */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
cleanup_errors (pData); /* cleanup previous errors */
pData->bReading = MNG_TRUE; /* read only! */
if (!pData->fOpenstream (hHandle)) /* open it and start reading */
iRetcode = MNG_APPIOERROR;
else
iRetcode = read_graphic (pData);
if (pData->bEOF) /* already at EOF ? */
{
pData->bReading = MNG_FALSE; /* then we're no longer reading */
#ifdef MNG_SUPPORT_DISPLAY
mng_reset_rundata (pData); /* reset rundata */
#endif
}
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bSuspended) /* read suspension ? */
{
iRetcode = MNG_NEEDMOREDATA;
pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_END)
#endif
return iRetcode;
}
#endif /* MNG_SUPPORT_READ */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_READ
mng_retcode MNG_DECL mng_read_resume (mng_handle hHandle)
{
mng_datap pData; /* local vars */
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
/* can we expect this call ? */
if ((!pData->bReading) || (!pData->bSuspended))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
cleanup_errors (pData); /* cleanup previous errors */
pData->bSuspended = MNG_FALSE; /* reset the flag */
#ifdef MNG_SUPPORT_DISPLAY /* re-synchronize ? */
if ((pData->bDisplaying) && (pData->bRunning))
pData->iSynctime = pData->iSynctime - pData->iSuspendtime +
pData->fGettickcount (hHandle);
#endif
iRetcode = read_graphic (pData); /* continue reading now */
if (pData->bEOF) /* at EOF ? */
{
pData->bReading = MNG_FALSE; /* then we're no longer reading */
#ifdef MNG_SUPPORT_DISPLAY
mng_reset_rundata (pData); /* reset rundata */
#endif
}
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bSuspended) /* read suspension ? */
{
iRetcode = MNG_NEEDMOREDATA;
pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_END)
#endif
return iRetcode;
}
#endif /* MNG_SUPPORT_READ */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_WRITE
mng_retcode MNG_DECL mng_write (mng_handle hHandle)
{
mng_datap pData;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
pData = ((mng_datap)hHandle); /* and make it addressable */
#ifndef MNG_INTERNAL_MEMMNGMT
MNG_VALIDCB (hHandle, fMemalloc)
MNG_VALIDCB (hHandle, fMemfree)
#endif
MNG_VALIDCB (hHandle, fOpenstream)
MNG_VALIDCB (hHandle, fClosestream)
MNG_VALIDCB (hHandle, fWritedata)
#ifdef MNG_SUPPORT_READ
if (pData->bReading) /* valid at this point ? */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#endif
if (pData->bCreating) /* can't write while it's still being made! */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
cleanup_errors (pData); /* cleanup previous errors */
iRetcode = write_graphic (pData); /* do the write */
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_WRITE */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_WRITE
mng_retcode MNG_DECL mng_create (mng_handle hHandle)
{
mng_datap pData;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
pData = ((mng_datap)hHandle); /* and make it addressable */
#ifndef MNG_INTERNAL_MEMMNGMT
MNG_VALIDCB (hHandle, fMemalloc)
MNG_VALIDCB (hHandle, fMemfree)
#endif
#ifdef MNG_SUPPORT_READ
if (pData->bReading) /* valid at this point ? */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#endif
if ((pData->bWriting) || (pData->bCreating))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
cleanup_errors (pData); /* cleanup previous errors */
iRetcode = mng_reset (hHandle); /* clear any previous stuff */
if (iRetcode) /* on error bail out */
return iRetcode;
pData->bCreating = MNG_TRUE; /* indicate we're creating a new file */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_WRITE */
/* ************************************************************************** */
#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_READ)
mng_retcode MNG_DECL mng_readdisplay (mng_handle hHandle)
{
mng_datap pData; /* local vars */
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
pData = ((mng_datap)hHandle); /* and make it addressable */
#ifndef MNG_INTERNAL_MEMMNGMT
MNG_VALIDCB (hHandle, fMemalloc)
MNG_VALIDCB (hHandle, fMemfree)
#endif
MNG_VALIDCB (hHandle, fReaddata)
MNG_VALIDCB (hHandle, fGetcanvasline)
MNG_VALIDCB (hHandle, fRefresh)
MNG_VALIDCB (hHandle, fGettickcount)
MNG_VALIDCB (hHandle, fSettimer)
/* valid at this point ? */
if ((pData->bReading) || (pData->bDisplaying))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#ifdef MNG_SUPPORT_WRITE
if ((pData->bWriting) || (pData->bCreating))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#endif
cleanup_errors (pData); /* cleanup previous errors */
pData->bReading = MNG_TRUE; /* read & display! */
pData->bDisplaying = MNG_TRUE;
pData->bRunning = MNG_TRUE;
pData->iFrameseq = 0;
pData->iLayerseq = 0;
pData->iFrametime = 0;
pData->iRequestframe = 0;
pData->iRequestlayer = 0;
pData->iRequesttime = 0;
pData->bSearching = MNG_FALSE;
pData->iRuntime = 0;
pData->iSynctime = pData->fGettickcount (hHandle);
pData->iSuspendtime = 0;
pData->iStarttime = pData->iSynctime;
pData->iEndtime = 0;
if (!pData->fOpenstream (hHandle)) /* open it and start reading */
iRetcode = MNG_APPIOERROR;
else
iRetcode = read_graphic (pData);
if (pData->bEOF) /* already at EOF ? */
{
pData->bReading = MNG_FALSE; /* then we're no longer reading */
drop_invalid_objects (pData); /* drop invalidly stored objects */
}
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bSuspended) /* read suspension ? */
{
iRetcode = MNG_NEEDMOREDATA;
pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
}
else
if (pData->bTimerset) /* indicate timer break ? */
iRetcode = MNG_NEEDTIMERWAIT;
else
if (pData->bSectionwait) /* indicate section break ? */
iRetcode = MNG_NEEDSECTIONWAIT;
else
pData->bRunning = MNG_FALSE; /* no breaks = end of run */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_END)
#endif
return iRetcode;
}
#endif /* MNG_SUPPORT_DISPLAY && MNG_SUPPORT_READ */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode MNG_DECL mng_display (mng_handle hHandle)
{
mng_datap pData; /* local vars */
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */
pData = ((mng_datap)hHandle); /* and make it addressable */
#ifndef MNG_INTERNAL_MEMMNGMT
MNG_VALIDCB (hHandle, fMemalloc)
MNG_VALIDCB (hHandle, fMemfree)
#endif
MNG_VALIDCB (hHandle, fGetcanvasline)
MNG_VALIDCB (hHandle, fRefresh)
MNG_VALIDCB (hHandle, fGettickcount)
MNG_VALIDCB (hHandle, fSettimer)
if (pData->bDisplaying) /* valid at this point ? */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#ifdef MNG_SUPPORT_READ
if (pData->bReading)
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#endif
#ifdef MNG_SUPPORT_WRITE
if ((pData->bWriting) || (pData->bCreating))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
#endif
cleanup_errors (pData); /* cleanup previous errors */
pData->bDisplaying = MNG_TRUE; /* display! */
pData->bRunning = MNG_TRUE;
pData->iFrameseq = 0;
pData->iLayerseq = 0;
pData->iFrametime = 0;
pData->iRequestframe = 0;
pData->iRequestlayer = 0;
pData->iRequesttime = 0;
pData->bSearching = MNG_FALSE;
pData->iRuntime = 0;
pData->iSynctime = pData->fGettickcount (hHandle);
#ifdef MNG_SUPPORT_READ
pData->iSuspendtime = 0;
#endif
pData->iStarttime = pData->iSynctime;
pData->iEndtime = 0;
pData->pCurraniobj = pData->pFirstaniobj;
iRetcode = process_display (pData); /* go do it */
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bTimerset) /* indicate timer break ? */
iRetcode = MNG_NEEDTIMERWAIT;
else
pData->bRunning = MNG_FALSE; /* no breaks = end of run */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_END)
#endif
return iRetcode;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode MNG_DECL mng_display_resume (mng_handle hHandle)
{
mng_datap pData; /* local vars */
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
if (!pData->bDisplaying) /* can we expect this call ? */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
cleanup_errors (pData); /* cleanup previous errors */
if (pData->bRunning) /* was it running ? */
{ /* are we expecting this call ? */
if ((pData->bTimerset) || (pData->bSuspended) || (pData->bSectionwait))
{
pData->bTimerset = MNG_FALSE; /* reset the flags */
pData->bSectionwait = MNG_FALSE;
#ifdef MNG_SUPPORT_READ
if (pData->bReading) /* set during read&display ? */
{
if (pData->bSuspended) /* calculate proper synchronization */
pData->iSynctime = pData->iSynctime - pData->iSuspendtime +
pData->fGettickcount (hHandle);
else
pData->iSynctime = pData->fGettickcount (hHandle);
pData->bSuspended = MNG_FALSE; /* now reset this flag */
/* and continue reading */
iRetcode = read_graphic (pData);
if (pData->bEOF) /* already at EOF ? */
{
pData->bReading = MNG_FALSE; /* then we're no longer reading */
/* drop invalidly stored objects */
drop_invalid_objects (pData);
}
}
else
#endif /* MNG_SUPPORT_READ */
{ /* synchronize timing */
pData->iSynctime = pData->fGettickcount (hHandle);
/* resume display processing */
iRetcode = process_display (pData);
}
}
else
{
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
}
}
else
{ /* synchronize timing */
pData->iSynctime = pData->fGettickcount (hHandle);
pData->bRunning = MNG_TRUE; /* it's restarted again ! */
/* resume display processing */
iRetcode = process_display (pData);
}
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bSuspended) /* read suspension ? */
{
iRetcode = MNG_NEEDMOREDATA;
pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData);
}
else
if (pData->bTimerset) /* indicate timer break ? */
iRetcode = MNG_NEEDTIMERWAIT;
else
if (pData->bSectionwait) /* indicate section break ? */
iRetcode = MNG_NEEDSECTIONWAIT;
else
{ /* no breaks = end of run */
pData->bRunning = MNG_FALSE;
if (pData->bFreezing) /* trying to freeze ? */
{ /* then we're there ! */
pData->bFreezing = MNG_FALSE;
}
if (pData->bResetting) /* trying to reset as well ? */
{ /* full stop!!! */
pData->bDisplaying = MNG_FALSE;
iRetcode = mng_reset_rundata (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_END)
#endif
return iRetcode;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode MNG_DECL mng_display_freeze (mng_handle hHandle)
{
mng_datap pData;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
/* can we expect this call ? */
if ((!pData->bDisplaying) || (pData->bReading))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
cleanup_errors (pData); /* cleanup previous errors */
if (pData->bRunning) /* is it running ? */
{
mng_retcode iRetcode;
pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */
/* continue "normal" processing */
iRetcode = mng_display_resume (hHandle);
if (iRetcode) /* on error bail out */
return iRetcode;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode MNG_DECL mng_display_reset (mng_handle hHandle)
{
mng_datap pData;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
/* can we expect this call ? */
if ((!pData->bDisplaying) || (pData->bReading))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
if (!pData->bCacheplayback) /* must store playback info to work!! */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
cleanup_errors (pData); /* cleanup previous errors */
if (pData->bRunning) /* is it running ? */
{
pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */
pData->bResetting = MNG_TRUE; /* indicate we're about to reset too */
/* continue normal processing ? */
iRetcode = mng_display_resume (hHandle);
if (iRetcode) /* on error bail out */
return iRetcode;
}
else
{ /* full stop!!! */
pData->bDisplaying = MNG_FALSE;
iRetcode = mng_reset_rundata (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode MNG_DECL mng_display_goframe (mng_handle hHandle,
mng_uint32 iFramenr)
{
mng_datap pData;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
MNG_ERROR (pData, MNG_NOTANANIMATION);
/* can we expect this call ? */
if ((!pData->bDisplaying) || (pData->bRunning))
MNG_ERROR ((mng_datap)hHandle, MNG_FUNCTIONINVALID)
if (!pData->bCacheplayback) /* must store playback info to work!! */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
if (iFramenr > pData->iFramecount) /* is the parameter within bounds ? */
MNG_ERROR (pData, MNG_FRAMENRTOOHIGH);
cleanup_errors (pData); /* cleanup previous errors */
pData->iRequestframe = iFramenr; /* go find the requested frame then */
iRetcode = process_display (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode MNG_DECL mng_display_golayer (mng_handle hHandle,
mng_uint32 iLayernr)
{
mng_datap pData;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
MNG_ERROR (pData, MNG_NOTANANIMATION)
/* can we expect this call ? */
if ((!pData->bDisplaying) || (pData->bRunning))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
if (!pData->bCacheplayback) /* must store playback info to work!! */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
if (iLayernr > pData->iLayercount) /* is the parameter within bounds ? */
MNG_ERROR (pData, MNG_LAYERNRTOOHIGH)
cleanup_errors (pData); /* cleanup previous errors */
pData->iRequestlayer = iLayernr; /* go find the requested layer then */
iRetcode = process_display (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
#ifdef MNG_SUPPORT_DISPLAY
mng_retcode MNG_DECL mng_display_gotime (mng_handle hHandle,
mng_uint32 iPlaytime)
{
mng_datap pData;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
if (pData->eImagetype != mng_it_mng) /* is it an animation ? */
MNG_ERROR (pData, MNG_NOTANANIMATION)
/* can we expect this call ? */
if ((!pData->bDisplaying) || (pData->bRunning))
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
if (!pData->bCacheplayback) /* must store playback info to work!! */
MNG_ERROR (pData, MNG_FUNCTIONINVALID)
if (iPlaytime > pData->iPlaytime) /* is the parameter within bounds ? */
MNG_ERROR (pData, MNG_PLAYTIMETOOHIGH)
cleanup_errors (pData); /* cleanup previous errors */
pData->iRequesttime = iPlaytime; /* go find the requested playtime then */
iRetcode = process_display (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_SUPPORT_DISPLAY */
/* ************************************************************************** */
mng_retcode MNG_DECL mng_getlasterror (mng_handle hHandle,
mng_int8* iSeverity,
mng_chunkid* iChunkname,
mng_uint32* iChunkseq,
mng_int32* iExtra1,
mng_int32* iExtra2,
mng_pchar* zErrortext)
{
mng_datap pData; /* local vars */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_START)
#endif
MNG_VALIDHANDLE (hHandle) /* check validity handle */
pData = ((mng_datap)hHandle); /* and make it addressable */
*iSeverity = pData->iSeverity; /* return the appropriate fields */
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
*iChunkname = pData->iChunkname;
*iChunkseq = pData->iChunkseq;
#else
*iChunkname = MNG_UINT_HUH;
*iChunkseq = 0;
#endif
*iExtra1 = pData->iErrorx1;
*iExtra2 = pData->iErrorx2;
*zErrortext = pData->zErrortext;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_END)
#endif
return pData->iErrorcode; /* and the errorcode */
}
/* ************************************************************************** */
/* * end of file * */
/* ************************************************************************** */
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