/* ************************************************************************** */
/* * For conditions of distribution and use, * */
/* * see copyright notice in libmng.h * */
/* ************************************************************************** */
/* * * */
/* * project : libmng * */
/* * file : libmng_display.c copyright (c) 2000 G.Juyn * */
/* * version : 1.0.2 * */
/* * * */
/* * purpose : Display management (implementation) * */
/* * * */
/* * author : G.Juyn * */
/* * web : http://www.3-t.com * */
/* * email : mailto:info@3-t.com * */
/* * * */
/* * comment : implementation of the display management routines * */
/* * * */
/* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */
/* * - changed strict-ANSI stuff * */
/* * 0.5.1 - 05/11/2000 - G.Juyn * */
/* * - added callback error-reporting support * */
/* * - fixed frame_delay misalignment * */
/* * 0.5.1 - 05/12/2000 - G.Juyn * */
/* * - added sanity check for frozen status * */
/* * - changed trace to macro for callback error-reporting * */
/* * 0.5.1 - 05/13/2000 - G.Juyn * */
/* * - changed display_mend to reset state to initial or SAVE * */
/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */
/* * - added TERM animation object pointer (easier reference) * */
/* * - added process_save & process_seek routines * */
/* * 0.5.1 - 05/14/2000 - G.Juyn * */
/* * - added save_state and restore_state for SAVE/SEEK/TERM * */
/* * processing * */
/* * * */
/* * 0.5.2 - 05/20/2000 - G.Juyn * */
/* * - added JNG support (JHDR/JDAT) * */
/* * 0.5.2 - 05/23/2000 - G.Juyn * */
/* * - fixed problem with DEFI clipping * */
/* * 0.5.2 - 05/30/2000 - G.Juyn * */
/* * - added delta-image support (DHDR,PROM,IPNG,IJNG) * */
/* * 0.5.2 - 05/31/2000 - G.Juyn * */
/* * - fixed pointer confusion (contributed by Tim Rowley) * */
/* * 0.5.2 - 06/03/2000 - G.Juyn * */
/* * - fixed makeup for Linux gcc compile * */
/* * 0.5.2 - 06/05/2000 - G.Juyn * */
/* * - added support for RGB8_A8 canvasstyle * */
/* * 0.5.2 - 06/09/2000 - G.Juyn * */
/* * - fixed timer-handling to run with Mozilla (Tim Rowley) * */
/* * 0.5.2 - 06/10/2000 - G.Juyn * */
/* * - fixed some compilation-warnings (contrib Jason Morris) * */
/* * * */
/* * 0.5.3 - 06/12/2000 - G.Juyn * */
/* * - fixed display of stored JNG images * */
/* * 0.5.3 - 06/13/2000 - G.Juyn * */
/* * - fixed problem with BASI-IEND as object 0 * */
/* * 0.5.3 - 06/16/2000 - G.Juyn * */
/* * - changed progressive-display processing * */
/* * 0.5.3 - 06/17/2000 - G.Juyn * */
/* * - changed delta-image processing * */
/* * 0.5.3 - 06/20/2000 - G.Juyn * */
/* * - fixed some minor stuff * */
/* * 0.5.3 - 06/21/2000 - G.Juyn * */
/* * - added speed-modifier to timing routine * */
/* * 0.5.3 - 06/22/2000 - G.Juyn * */
/* * - added support for PPLT chunk processing * */
/* * 0.5.3 - 06/29/2000 - G.Juyn * */
/* * - swapped refresh parameters * */
/* * * */
/* * 0.9.0 - 06/30/2000 - G.Juyn * */
/* * - changed refresh parameters to 'x,y,width,height' * */
/* * * */
/* * 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 * */
/* * 0.9.1 - 07/14/2000 - G.Juyn * */
/* * - changed EOF processing behavior * */
/* * - fixed TERM delay processing * */
/* * 0.9.1 - 07/15/2000 - G.Juyn * */
/* * - fixed freeze & reset processing * */
/* * 0.9.1 - 07/16/2000 - G.Juyn * */
/* * - fixed storage of images during mng_read() * */
/* * - fixed support for mng_display() after mng_read() * */
/* * 0.9.1 - 07/24/2000 - G.Juyn * */
/* * - fixed reading of still-images * */
/* * * */
/* * 0.9.2 - 08/05/2000 - G.Juyn * */
/* * - changed file-prefixes * */
/* * * */
/* * 0.9.3 - 08/07/2000 - G.Juyn * */
/* * - B111300 - fixup for improved portability * */
/* * 0.9.3 - 08/21/2000 - G.Juyn * */
/* * - fixed TERM processing delay of 0 msecs * */
/* * 0.9.3 - 08/26/2000 - G.Juyn * */
/* * - added MAGN chunk * */
/* * 0.9.3 - 09/10/2000 - G.Juyn * */
/* * - fixed problem with no refresh after TERM * */
/* * - fixed DEFI behavior * */
/* * 0.9.3 - 09/16/2000 - G.Juyn * */
/* * - fixed timing & refresh behavior for single PNG/JNG * */
/* * 0.9.3 - 09/19/2000 - G.Juyn * */
/* * - refixed timing & refresh behavior for single PNG/JNG * */
/* * 0.9.3 - 10/02/2000 - G.Juyn * */
/* * - fixed timing again (this is getting boring...) * */
/* * - refixed problem with no refresh after TERM * */
/* * 0.9.3 - 10/16/2000 - G.Juyn * */
/* * - added JDAA chunk * */
/* * 0.9.3 - 10/17/2000 - G.Juyn * */
/* * - fixed support for bKGD * */
/* * 0.9.3 - 10/18/2000 - G.Juyn * */
/* * - fixed delta-processing behavior * */
/* * 0.9.3 - 10/19/2000 - G.Juyn * */
/* * - added storage for pixel-/alpha-sampledepth for delta's * */
/* * 0.9.3 - 10/27/2000 - G.Juyn * */
/* * - fixed seperate read() & display() processing * */
/* * * */
/* * 0.9.4 - 10/31/2000 - G.Juyn * */
/* * - fixed possible loop in display_resume() (Thanks Vova!) * */
/* * 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 * */
/* * - added restore of object 0 to TERM processing !!! * */
/* * - fixed TERM delay processing * */
/* * - fixed TERM end processing (count = 0) * */
/* * 0.9.4 - 12/16/2000 - G.Juyn * */
/* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */
/* * 0.9.4 - 1/18/2001 - G.Juyn * */
/* * - removed test filter-methods 1 & 65 * */
/* * - set default level-set for filtertype=64 to all zeroes * */
/* * * */
/* * 0.9.5 - 1/20/2001 - G.Juyn * */
/* * - fixed compiler-warnings Mozilla (thanks Tim) * */
/* * 0.9.5 - 1/23/2001 - G.Juyn * */
/* * - fixed timing-problem with switching framing_modes * */
/* * * */
/* * 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 memory-leak for JNGs with alpha (Thanks Gregg!) * */
/* * - added BGRA8 canvas with premultiplied alpha * */
/* * * */
/* * 1.0.2 - 06/25/2001 - G.Juyn * */
/* * - fixed memory-leak with delta-images (Thanks Michael!) * */
/* * * */
/* ************************************************************************** */
#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_memory.h"
#include "libmng_zlib.h"
#include "libmng_jpeg.h"
#include "libmng_cms.h"
#include "libmng_pixels.h"
#include "libmng_display.h"
#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
#pragma option -A /* force ANSI-C */
#endif
/* ************************************************************************** */
#ifdef MNG_INCLUDE_DISPLAY_PROCS
/* ************************************************************************** */
mng_retcode set_delay (mng_datap pData,
mng_uint32 iInterval)
{
if (!iInterval) /* at least 1 msec please! */
iInterval = 1;
if (!pData->fSettimer ((mng_handle)pData, iInterval))
MNG_ERROR (pData, MNG_APPTIMERERROR)
pData->bTimerset = MNG_TRUE; /* and indicate so */
return MNG_NOERROR;
}
/* ************************************************************************** */
/* * * */
/* * Progressive display refresh - does the call to the refresh callback * */
/* * and sets the timer to allow the app to perform the actual refresh to * */
/* * the screen (eg. process its main message-loop) * */
/* * * */
/* ************************************************************************** */
mng_retcode display_progressive_refresh (mng_datap pData,
mng_uint32 iInterval)
{
if (!pData->bSearching) /* we mustn't be searching !!! */
{
if ((pData->bRunning) && /* let the app refresh first ? */
(pData->iUpdatetop < pData->iUpdatebottom) && (pData->iUpdateleft < pData->iUpdateright))
{
if (!pData->fRefresh (((mng_handle)pData),
pData->iUpdateleft, pData->iUpdatetop,
pData->iUpdateright - pData->iUpdateleft,
pData->iUpdatebottom - pData->iUpdatetop))
MNG_ERROR (pData, MNG_APPMISCERROR)
pData->iUpdateleft = 0; /* reset update-region */
pData->iUpdateright = 0;
pData->iUpdatetop = 0;
pData->iUpdatebottom = 0; /* reset refreshneeded indicator */
pData->bNeedrefresh = MNG_FALSE;
/* interval requested ? */
if ((!pData->bFreezing) && (iInterval))
{ /* setup the timer */
mng_retcode iRetcode = set_delay (pData, iInterval);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
}
return MNG_NOERROR;
}
/* ************************************************************************** */
/* * * */
/* * Generic display routines * */
/* * * */
/* ************************************************************************** */
mng_retcode interframe_delay (mng_datap pData)
{
mng_uint32 iWaitfor = 0;
mng_uint32 iInterval;
mng_uint32 iRuninterval;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_INTERFRAME_DELAY, MNG_LC_START)
#endif
if (!pData->bSearching) /* we mustn't be searching !!! */
{
if (pData->iFramedelay > 0) /* real delay ? */
{
if ((pData->bRunning) && /* let the app refresh first ? */
(pData->iUpdatetop < pData->iUpdatebottom) && (pData->iUpdateleft < pData->iUpdateright))
if (!pData->fRefresh (((mng_handle)pData),
pData->iUpdateleft, pData->iUpdatetop,
pData->iUpdateright - pData->iUpdateleft,
pData->iUpdatebottom - pData->iUpdatetop))
MNG_ERROR (pData, MNG_APPMISCERROR)
pData->iUpdateleft = 0; /* reset update-region */
pData->iUpdateright = 0;
pData->iUpdatetop = 0;
pData->iUpdatebottom = 0; /* reset refreshneeded indicator */
pData->bNeedrefresh = MNG_FALSE;
/* get current tickcount */
pData->iRuntime = pData->fGettickcount ((mng_handle)pData);
/* calculate interval since last sync-point */
if (pData->iRuntime < pData->iSynctime)
iRuninterval = pData->iRuntime + ~pData->iSynctime + 1;
else
iRuninterval = pData->iRuntime - pData->iSynctime;
/* calculate actual run-time */
if (pData->iRuntime < pData->iStarttime)
pData->iRuntime = pData->iRuntime + ~pData->iStarttime + 1;
else
pData->iRuntime = pData->iRuntime - pData->iStarttime;
if (pData->iTicks) /* what are we aiming for */
{
switch (pData->iSpeed) /* honor speed modifier */
{
case mng_st_fast :
{
iWaitfor = (mng_uint32)(( 500 * pData->iFramedelay) / pData->iTicks);
break;
}
case mng_st_slow :
{
iWaitfor = (mng_uint32)((3000 * pData->iFramedelay) / pData->iTicks);
break;
}
case mng_st_slowest :
{
iWaitfor = (mng_uint32)((8000 * pData->iFramedelay) / pData->iTicks);
break;
}
default :
{
iWaitfor = (mng_uint32)((1000 * pData->iFramedelay) / pData->iTicks);
}
}
}
else
{
if (pData->eImagetype == mng_it_mng)
iWaitfor = 1000;
else
iWaitfor = 1;
}
if (iWaitfor > iRuninterval) /* delay necessary ? */
iInterval = iWaitfor - iRuninterval;
else
iInterval = 1; /* force app to process messageloop */
if (pData->bRunning) /* set the timer ? */
{
iRetcode = set_delay (pData, iInterval);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
if (pData->bRunning) /* increase frametime in advance */
pData->iFrametime = pData->iFrametime + iWaitfor;
/* setup for next delay */
pData->iFramedelay = pData->iNextdelay;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_INTERFRAME_DELAY, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
void set_display_routine (mng_datap pData)
{ /* actively running ? */
if ((pData->bRunning) && (!pData->bFreezing))
{
switch (pData->iCanvasstyle) /* determine display routine */
{
case MNG_CANVAS_RGB8 : { pData->fDisplayrow = (mng_fptr)display_rgb8; break; }
case MNG_CANVAS_RGBA8 : { pData->fDisplayrow = (mng_fptr)display_rgba8; break; }
case MNG_CANVAS_ARGB8 : { pData->fDisplayrow = (mng_fptr)display_argb8; break; }
case MNG_CANVAS_RGB8_A8 : { pData->fDisplayrow = (mng_fptr)display_rgb8_a8; break; }
case MNG_CANVAS_BGR8 : { pData->fDisplayrow = (mng_fptr)display_bgr8; break; }
case MNG_CANVAS_BGRA8 : { pData->fDisplayrow = (mng_fptr)display_bgra8; break; }
case MNG_CANVAS_BGRA8PM : { pData->fDisplayrow = (mng_fptr)display_bgra8_pm; break; }
case MNG_CANVAS_ABGR8 : { pData->fDisplayrow = (mng_fptr)display_abgr8; break; }
/* case MNG_CANVAS_RGB16 : { pData->fDisplayrow = (mng_fptr)display_rgb16; break; } */
/* case MNG_CANVAS_RGBA16 : { pData->fDisplayrow = (mng_fptr)display_rgba16; break; } */
/* case MNG_CANVAS_ARGB16 : { pData->fDisplayrow = (mng_fptr)display_argb16; break; } */
/* case MNG_CANVAS_BGR16 : { pData->fDisplayrow = (mng_fptr)display_bgr16; break; } */
/* case MNG_CANVAS_BGRA16 : { pData->fDisplayrow = (mng_fptr)display_bgra16; break; } */
/* case MNG_CANVAS_ABGR16 : { pData->fDisplayrow = (mng_fptr)display_abgr16; break; } */
/* case MNG_CANVAS_INDEX8 : { pData->fDisplayrow = (mng_fptr)display_index8; break; } */
/* case MNG_CANVAS_INDEXA8 : { pData->fDisplayrow = (mng_fptr)display_indexa8; break; } */
/* case MNG_CANVAS_AINDEX8 : { pData->fDisplayrow = (mng_fptr)display_aindex8; break; } */
/* case MNG_CANVAS_GRAY8 : { pData->fDisplayrow = (mng_fptr)display_gray8; break; } */
/* case MNG_CANVAS_GRAY16 : { pData->fDisplayrow = (mng_fptr)display_gray16; break; } */
/* case MNG_CANVAS_GRAYA8 : { pData->fDisplayrow = (mng_fptr)display_graya8; break; } */
/* case MNG_CANVAS_GRAYA16 : { pData->fDisplayrow = (mng_fptr)display_graya16; break; } */
/* case MNG_CANVAS_AGRAY8 : { pData->fDisplayrow = (mng_fptr)display_agray8; break; } */
/* case MNG_CANVAS_AGRAY16 : { pData->fDisplayrow = (mng_fptr)display_agray16; break; } */
/* case MNG_CANVAS_DX15 : { pData->fDisplayrow = (mng_fptr)display_dx15; break; } */
/* case MNG_CANVAS_DX16 : { pData->fDisplayrow = (mng_fptr)display_dx16; break; } */
}
}
return;
}
/* ************************************************************************** */
mng_retcode load_bkgdlayer (mng_datap pData)
{
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_LOAD_BKGDLAYER, MNG_LC_START)
#endif
/* actively running ? */
if ((pData->bRunning) && (!pData->bFreezing))
{
mng_int32 iY;
mng_retcode iRetcode; /* save values */
mng_int32 iDestl = pData->iDestl;
mng_int32 iDestr = pData->iDestr;
mng_int32 iDestt = pData->iDestt;
mng_int32 iDestb = pData->iDestb;
mng_int32 iSourcel = pData->iSourcel;
mng_int32 iSourcer = pData->iSourcer;
mng_int32 iSourcet = pData->iSourcet;
mng_int32 iSourceb = pData->iSourceb;
mng_int8 iPass = pData->iPass;
mng_int32 iRow = pData->iRow;
mng_int32 iRowinc = pData->iRowinc;
mng_int32 iCol = pData->iCol;
mng_int32 iColinc = pData->iColinc;
mng_int32 iRowsamples = pData->iRowsamples;
mng_int32 iRowsize = pData->iRowsize;
mng_bool bIsRGBA16 = pData->bIsRGBA16;
mng_bool bIsOpaque = pData->bIsOpaque;
mng_fptr fCorrectrow = pData->fCorrectrow;
pData->iDestl = 0; /* determine clipping region */
pData->iDestt = 0;
pData->iDestr = pData->iWidth;
pData->iDestb = pData->iHeight;
if (pData->bFrameclipping) /* frame clipping specified ? */
{
pData->iDestl = MAX_COORD (pData->iDestl, pData->iFrameclipl);
pData->iDestt = MAX_COORD (pData->iDestt, pData->iFrameclipt);
pData->iDestr = MIN_COORD (pData->iDestr, pData->iFrameclipr);
pData->iDestb = MIN_COORD (pData->iDestb, pData->iFrameclipb);
}
/* anything to clear ? */
if ((pData->iDestr >= pData->iDestl) && (pData->iDestb >= pData->iDestt))
{
pData->iPass = -1; /* these are the object's dimensions now */
pData->iRow = 0;
pData->iRowinc = 1;
pData->iCol = 0;
pData->iColinc = 1;
pData->iRowsamples = pData->iWidth;
pData->iRowsize = pData->iRowsamples << 2;
pData->bIsRGBA16 = MNG_FALSE; /* let's keep it simple ! */
pData->bIsOpaque = MNG_TRUE;
pData->iSourcel = 0; /* source relative to destination */
pData->iSourcer = pData->iDestr - pData->iDestl;
pData->iSourcet = 0;
pData->iSourceb = pData->iDestb - pData->iDestt;
set_display_routine (pData); /* determine display routine */
/* default restore using preset BG color */
pData->fRestbkgdrow = (mng_fptr)restore_bkgd_bgcolor;
if (((pData->eImagetype == mng_it_png) || (pData->eImagetype == mng_it_jng)) &&
(pData->bUseBKGD))
{ /* prefer bKGD in PNG/JNG */
mng_imagep pImage = (mng_imagep)pData->pCurrentobj;
if (!pImage)
pImage = (mng_imagep)pData->pObjzero;
if (pImage->pImgbuf->bHasBKGD)
pData->fRestbkgdrow = (mng_fptr)restore_bkgd_bkgd;
}
if (pData->fGetbkgdline) /* background-canvas-access callback set ? */
{
switch (pData->iBkgdstyle)
{
case MNG_CANVAS_RGB8 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_rgb8; break; }
case MNG_CANVAS_BGR8 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_bgr8; break; }
/* case MNG_CANVAS_RGB16 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_rgb16; break; } */
/* case MNG_CANVAS_BGR16 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_bgr16; break; } */
/* case MNG_CANVAS_INDEX8 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_index8; break; } */
/* case MNG_CANVAS_GRAY8 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_gray8; break; } */
/* case MNG_CANVAS_GRAY16 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_gray16; break; } */
/* case MNG_CANVAS_DX15 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_dx15; break; } */
/* case MNG_CANVAS_DX16 : { pData->fRestbkgdrow = (mng_fptr)restore_bkgd_dx16; break; } */
}
}
if (pData->bHasBACK)
{ /* background image ? */
if ((pData->iBACKmandatory & 0x02) && (pData->iBACKimageid))
pData->fRestbkgdrow = (mng_fptr)restore_bkgd_backimage;
else /* background color ? */
if (pData->iBACKmandatory & 0x01)
pData->fRestbkgdrow = (mng_fptr)restore_bkgd_backcolor;
}
pData->fCorrectrow = MNG_NULL; /* default no color-correction */
/* TODO: determine color correction; this is tricky;
the BACK color is treated differently as the image;
it probably requires a rewrite of the logic here... */
/* get a temporary row-buffer */
MNG_ALLOC (pData, pData->pRGBArow, pData->iRowsize)
iY = pData->iDestt; /* this is where we start */
iRetcode = MNG_NOERROR; /* so far, so good */
while ((!iRetcode) && (iY < pData->iDestb))
{ /* restore a background row */
iRetcode = ((mng_restbkgdrow)pData->fRestbkgdrow) (pData);
/* color correction ? */
if ((!iRetcode) && (pData->fCorrectrow))
iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData);
if (!iRetcode) /* so... display it */
iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData);
if (!iRetcode)
iRetcode = next_row (pData); /* adjust variables for next row */
iY++; /* and next line */
}
/* drop the temporary row-buffer */
MNG_FREE (pData, pData->pRGBArow, pData->iRowsize)
if (iRetcode) /* on error bail out */
return iRetcode;
}
pData->iDestl = iDestl; /* restore values */
pData->iDestr = iDestr;
pData->iDestt = iDestt;
pData->iDestb = iDestb;
pData->iSourcel = iSourcel;
pData->iSourcer = iSourcer;
pData->iSourcet = iSourcet;
pData->iSourceb = iSourceb;
pData->iPass = iPass;
pData->iRow = iRow;
pData->iRowinc = iRowinc;
pData->iCol = iCol;
pData->iColinc = iColinc;
pData->iRowsamples = iRowsamples;
pData->iRowsize = iRowsize;
pData->bIsRGBA16 = bIsRGBA16;
pData->bIsOpaque = bIsOpaque;
pData->fCorrectrow = fCorrectrow;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_LOAD_BKGDLAYER, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode clear_canvas (mng_datap pData)
{
mng_int32 iY;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_CLEAR_CANVAS, MNG_LC_START)
#endif
pData->iDestl = 0; /* clipping region is full canvas! */
pData->iDestt = 0;
pData->iDestr = pData->iWidth;
pData->iDestb = pData->iHeight;
pData->iSourcel = 0; /* source is same as destination */
pData->iSourcer = pData->iWidth;
pData->iSourcet = 0;
pData->iSourceb = pData->iHeight;
pData->iPass = -1; /* these are the object's dimensions now */
pData->iRow = 0;
pData->iRowinc = 1;
pData->iCol = 0;
pData->iColinc = 1;
pData->iRowsamples = pData->iWidth;
pData->iRowsize = pData->iRowsamples << 2;
pData->bIsRGBA16 = MNG_FALSE; /* let's keep it simple ! */
pData->bIsOpaque = MNG_TRUE;
set_display_routine (pData); /* determine display routine */
/* get a temporary row-buffer */
/* it's transparent black by default!! */
MNG_ALLOC (pData, pData->pRGBArow, pData->iRowsize)
iY = pData->iDestt; /* this is where we start */
iRetcode = MNG_NOERROR; /* so far, so good */
while ((!iRetcode) && (iY < pData->iDestb))
{ /* clear a row then */
iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData);
if (!iRetcode)
iRetcode = next_row (pData); /* adjust variables for next row */
iY++; /* and next line */
}
/* drop the temporary row-buffer */
MNG_FREE (pData, pData->pRGBArow, pData->iRowsize)
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_CLEAR_CANVAS, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode next_frame (mng_datap pData,
mng_uint8 iFramemode,
mng_uint8 iChangedelay,
mng_uint32 iDelay,
mng_uint8 iChangetimeout,
mng_uint32 iTimeout,
mng_uint8 iChangeclipping,
mng_uint8 iCliptype,
mng_int32 iClipl,
mng_int32 iClipr,
mng_int32 iClipt,
mng_int32 iClipb)
{
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_NEXT_FRAME, MNG_LC_START)
#endif
if (!pData->iBreakpoint) /* no previous break here ? */
{
mng_uint8 iOldmode = pData->iFramemode;
/* interframe delay required ? */
if ((iOldmode == 2) || (iOldmode == 4))
{
/* changed here because FRAM 1/3 will delay themselves before each image */
if ((pData->iFrameseq) && (iFramemode != 1) && (iFramemode != 3))
iRetcode = interframe_delay (pData);
else
pData->iFramedelay = pData->iNextdelay;
}
else
{ /* delay before inserting background layer? */
if ((pData->bFramedone) && (iFramemode == 4))
iRetcode = interframe_delay (pData);
}
if (iRetcode) /* on error bail out */
return iRetcode;
/* now we'll assume we're in the next frame! */
if (iFramemode) /* save the new framing mode ? */
{
pData->iFRAMmode = iFramemode;
pData->iFramemode = iFramemode;
}
else /* reload default */
pData->iFramemode = pData->iFRAMmode;
if (iChangedelay) /* delay changed ? */
{
pData->iNextdelay = iDelay; /* for *after* next subframe */
if ((iOldmode == 2) || (iOldmode == 4))
/* pData->iFramedelay = iDelay; */
pData->iFramedelay = pData->iFRAMdelay;
if (iChangedelay == 2) /* also overall ? */
pData->iFRAMdelay = iDelay;
}
else
{ /* reload default */
pData->iNextdelay = pData->iFRAMdelay;
/* if ((iOldmode == 2) || (iOldmode == 4))
pData->iFramedelay = pData->iNextdelay; */
}
if (iChangetimeout) /* timeout changed ? */
{ /* for next subframe */
pData->iFrametimeout = iTimeout;
if ((iChangetimeout == 2) || /* also overall ? */
(iChangetimeout == 4) ||
(iChangetimeout == 6) ||
(iChangetimeout == 8))
pData->iFRAMtimeout = iTimeout;
}
else /* reload default */
pData->iFrametimeout = pData->iFRAMtimeout;
if (iChangeclipping) /* clipping changed ? */
{
pData->bFrameclipping = MNG_TRUE;
if (!iCliptype) /* absolute ? */
{
pData->iFrameclipl = iClipl;
pData->iFrameclipr = iClipr;
pData->iFrameclipt = iClipt;
pData->iFrameclipb = iClipb;
}
else /* relative */
{
pData->iFrameclipl = pData->iFrameclipl + iClipl;
pData->iFrameclipr = pData->iFrameclipr + iClipr;
pData->iFrameclipt = pData->iFrameclipt + iClipt;
pData->iFrameclipb = pData->iFrameclipb + iClipb;
}
if (iChangeclipping == 2) /* also overall ? */
{
pData->bFRAMclipping = MNG_TRUE;
if (!iCliptype) /* absolute ? */
{
pData->iFRAMclipl = iClipl;
pData->iFRAMclipr = iClipr;
pData->iFRAMclipt = iClipt;
pData->iFRAMclipb = iClipb;
}
else /* relative */
{
pData->iFRAMclipl = pData->iFRAMclipl + iClipl;
pData->iFRAMclipr = pData->iFRAMclipr + iClipr;
pData->iFRAMclipt = pData->iFRAMclipt + iClipt;
pData->iFRAMclipb = pData->iFRAMclipb + iClipb;
}
}
}
else
{ /* reload defaults */
pData->bFrameclipping = pData->bFRAMclipping;
pData->iFrameclipl = pData->iFRAMclipl;
pData->iFrameclipr = pData->iFRAMclipr;
pData->iFrameclipt = pData->iFRAMclipt;
pData->iFrameclipb = pData->iFRAMclipb;
}
}
if (!pData->bTimerset) /* timer still off ? */
{
if ((pData->iFramemode == 4) || /* insert background layer after a new frame */
(!pData->iLayerseq)) /* and certainly before the very first layer */
iRetcode = load_bkgdlayer (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
if ((pData->bDisplaying) && (pData->bRunning))
{
pData->iFrameseq++; /* count the frame ! */
pData->bFramedone = MNG_TRUE; /* and indicate we've done one */
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_NEXT_FRAME, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode next_layer (mng_datap pData)
{
mng_imagep pImage;
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_NEXT_LAYER, MNG_LC_START)
#endif
if (!pData->iBreakpoint) /* no previous break here ? */
{ /* interframe delay required ? */
if ((pData->eImagetype == mng_it_mng) && (pData->iLayerseq) &&
((pData->iFramemode == 1) || (pData->iFramemode == 3)))
iRetcode = interframe_delay (pData);
else
pData->iFramedelay = pData->iNextdelay;
if (iRetcode) /* on error bail out */
return iRetcode;
}
if (!pData->bTimerset) /* timer still off ? */
{
if (!pData->iLayerseq) /* restore background for the very first layer ? */
{ /* wait till IDAT/JDAT for PNGs & JNGs !!! */
if ((pData->eImagetype == mng_it_png) || (pData->eImagetype == mng_it_jng))
pData->bRestorebkgd = MNG_TRUE;
else
{ /* for MNG we do it right away */
iRetcode = load_bkgdlayer (pData);
if (pData->bRunning)
pData->iLayerseq++; /* and it counts as a layer then ! */
}
}
else
if (pData->iFramemode == 3) /* restore background for each layer ? */
iRetcode = load_bkgdlayer (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bHasDHDR) /* processing a delta-image ? */
pImage = (mng_imagep)pData->pDeltaImage;
else
pImage = (mng_imagep)pData->pCurrentobj;
if (!pImage) /* not an active object ? */
pImage = (mng_imagep)pData->pObjzero;
/* determine display rectangle */
pData->iDestl = MAX_COORD ((mng_int32)0, pImage->iPosx);
pData->iDestt = MAX_COORD ((mng_int32)0, pImage->iPosy);
/* is it a valid buffer ? */
if ((pImage->pImgbuf->iWidth) && (pImage->pImgbuf->iHeight))
{
pData->iDestr = MIN_COORD ((mng_int32)pData->iWidth,
pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth );
pData->iDestb = MIN_COORD ((mng_int32)pData->iHeight,
pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight);
}
else /* it's a single image ! */
{
pData->iDestr = MIN_COORD ((mng_int32)pData->iWidth,
(mng_int32)pData->iDatawidth );
pData->iDestb = MIN_COORD ((mng_int32)pData->iHeight,
(mng_int32)pData->iDataheight);
}
if (pData->bFrameclipping) /* frame clipping specified ? */
{
pData->iDestl = MAX_COORD (pData->iDestl, pData->iFrameclipl);
pData->iDestt = MAX_COORD (pData->iDestt, pData->iFrameclipt);
pData->iDestr = MIN_COORD (pData->iDestr, pData->iFrameclipr);
pData->iDestb = MIN_COORD (pData->iDestb, pData->iFrameclipb);
}
if (pImage->bClipped) /* is the image clipped itself ? */
{
pData->iDestl = MAX_COORD (pData->iDestl, pImage->iClipl);
pData->iDestt = MAX_COORD (pData->iDestt, pImage->iClipt);
pData->iDestr = MIN_COORD (pData->iDestr, pImage->iClipr);
pData->iDestb = MIN_COORD (pData->iDestb, pImage->iClipb);
}
/* determine source starting point */
pData->iSourcel = MAX_COORD ((mng_int32)0, pData->iDestl - pImage->iPosx);
pData->iSourcet = MAX_COORD ((mng_int32)0, pData->iDestt - pImage->iPosy);
if ((pImage->pImgbuf->iWidth) && (pImage->pImgbuf->iHeight))
{ /* and maximum size */
pData->iSourcer = MIN_COORD ((mng_int32)pImage->pImgbuf->iWidth,
pData->iSourcel + pData->iDestr - pData->iDestl);
pData->iSourceb = MIN_COORD ((mng_int32)pImage->pImgbuf->iHeight,
pData->iSourcet + pData->iDestb - pData->iDestt);
}
else /* it's a single image ! */
{
pData->iSourcer = pData->iSourcel + pData->iDestr - pData->iDestl;
pData->iSourceb = pData->iSourcet + pData->iDestb - pData->iDestt;
}
if (pData->bRunning)
pData->iLayerseq++; /* count the layer ! */
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_NEXT_LAYER, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode display_image (mng_datap pData,
mng_imagep pImage,
mng_bool bLayeradvanced)
{
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DISPLAY_IMAGE, MNG_LC_START)
#endif
/* actively running ? */
if ((pData->bRunning) && (!pData->bFreezing))
{
if ( (!pData->iBreakpoint) && /* needs magnification ? */
( (pImage->iMAGN_MethodX) || (pImage->iMAGN_MethodY) ) )
{
iRetcode = magnify_imageobject (pData, pImage);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
pData->pRetrieveobj = pImage; /* so retrieve-row and color-correction can find it */
if (!bLayeradvanced) /* need to advance the layer ? */
{
mng_imagep pSave = pData->pCurrentobj;
pData->pCurrentobj = pImage;
next_layer (pData); /* advance to next layer */
pData->pCurrentobj = pSave;
}
/* need to restore the background ? */
if ((!pData->bTimerset) && (pData->bRestorebkgd))
{
mng_imagep pSave = pData->pCurrentobj;
pData->pCurrentobj = pImage;
pData->bRestorebkgd = MNG_FALSE;
iRetcode = load_bkgdlayer (pData);
pData->pCurrentobj = pSave;
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bRunning)
pData->iLayerseq++; /* and it counts as a layer then ! */
}
/* actively running ? */
if ((pData->bRunning) && (!pData->bFreezing))
{
if (!pData->bTimerset) /* all systems still go ? */
{
pData->iBreakpoint = 0; /* let's make absolutely sure... */
/* anything to display ? */
if ((pData->iDestr >= pData->iDestl) && (pData->iDestb >= pData->iDestt))
{
mng_int32 iY;
set_display_routine (pData); /* determine display routine */
/* and image-buffer retrieval routine */
switch (pImage->pImgbuf->iColortype)
{
case 0 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_g16;
else
pData->fRetrieverow = (mng_fptr)retrieve_g8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 2 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_rgb16;
else
pData->fRetrieverow = (mng_fptr)retrieve_rgb8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 3 : { pData->fRetrieverow = (mng_fptr)retrieve_idx8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 4 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_ga16;
else
pData->fRetrieverow = (mng_fptr)retrieve_ga8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 6 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_rgba16;
else
pData->fRetrieverow = (mng_fptr)retrieve_rgba8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 8 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_g16;
else
pData->fRetrieverow = (mng_fptr)retrieve_g8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case 10 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_rgb16;
else
pData->fRetrieverow = (mng_fptr)retrieve_rgb8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case 12 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_ga16;
else
pData->fRetrieverow = (mng_fptr)retrieve_ga8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 14 : { if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)retrieve_rgba16;
else
pData->fRetrieverow = (mng_fptr)retrieve_rgba8;
pData->bIsOpaque = MNG_FALSE;
break;
}
}
pData->iPass = -1; /* these are the object's dimensions now */
pData->iRow = pData->iSourcet;
pData->iRowinc = 1;
pData->iCol = 0;
pData->iColinc = 1;
pData->iRowsamples = pImage->pImgbuf->iWidth;
pData->iRowsize = pData->iRowsamples << 2;
pData->bIsRGBA16 = MNG_FALSE;
/* adjust for 16-bit object ? */
if (pImage->pImgbuf->iBitdepth > 8)
{
pData->bIsRGBA16 = MNG_TRUE;
pData->iRowsize = pData->iRowsamples << 3;
}
pData->fCorrectrow = MNG_NULL; /* default no color-correction */
#ifdef MNG_NO_CMS
iRetcode = MNG_NOERROR;
#else
#if defined(MNG_FULL_CMS) /* determine color-management routine */
iRetcode = init_full_cms_object (pData);
#elif defined(MNG_GAMMA_ONLY)
iRetcode = init_gamma_only_object (pData);
#elif defined(MNG_APP_CMS)
iRetcode = init_app_cms_object (pData);
#endif
if (iRetcode) /* on error bail out */
return iRetcode;
#endif /* MNG_NO_CMS */
/* get a temporary row-buffer */
MNG_ALLOC (pData, pData->pRGBArow, pData->iRowsize)
iY = pData->iSourcet; /* this is where we start */
while ((!iRetcode) && (iY < pData->iSourceb))
{ /* get a row */
iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData);
/* color correction ? */
if ((!iRetcode) && (pData->fCorrectrow))
iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData);
if (!iRetcode) /* so... display it */
iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData);
if (!iRetcode) /* adjust variables for next row */
iRetcode = next_row (pData);
iY++; /* and next line */
}
/* drop the temporary row-buffer */
MNG_FREE (pData, pData->pRGBArow, pData->iRowsize)
if (iRetcode) /* on error bail out */
return iRetcode;
#if defined(MNG_INCLUDE_LCMS) /* cleanup cms stuff */
iRetcode = mng_clear_cms (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
#endif
}
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_DISPLAY_IMAGE, MNG_LC_END)
#endif
return MNG_NOERROR; /* whehehe, this is good ! */
}
/* ************************************************************************** */
mng_retcode execute_delta_image (mng_datap pData,
mng_imagep pTarget,
mng_imagep pDelta)
{
mng_imagedatap pBuftarget = pTarget->pImgbuf;
mng_imagedatap pBufdelta = pDelta->pImgbuf;
mng_uint32 iY;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_EXECUTE_DELTA_IMAGE, MNG_LC_START)
#endif
/* actively running ? */
if ((pData->bRunning) && (!pData->bFreezing))
{
if (pBufdelta->bHasPLTE) /* palette in delta ? */
{
mng_uint32 iX;
/* new palette larger than old one ? */
if ((!pBuftarget->bHasPLTE) || (pBuftarget->iPLTEcount < pBufdelta->iPLTEcount))
pBuftarget->iPLTEcount = pBufdelta->iPLTEcount;
/* it's definitely got a PLTE now */
pBuftarget->bHasPLTE = MNG_TRUE;
for (iX = 0; iX < pBufdelta->iPLTEcount; iX++)
{
pBuftarget->aPLTEentries[iX].iRed = pBufdelta->aPLTEentries[iX].iRed;
pBuftarget->aPLTEentries[iX].iGreen = pBufdelta->aPLTEentries[iX].iGreen;
pBuftarget->aPLTEentries[iX].iBlue = pBufdelta->aPLTEentries[iX].iBlue;
}
}
if (pBufdelta->bHasTRNS) /* cheap transparency in delta ? */
{
switch (pData->iColortype) /* drop it into the target */
{
case 0: { /* gray */
pBuftarget->iTRNSgray = pBufdelta->iTRNSgray;
pBuftarget->iTRNSred = 0;
pBuftarget->iTRNSgreen = 0;
pBuftarget->iTRNSblue = 0;
pBuftarget->iTRNScount = 0;
break;
}
case 2: { /* rgb */
pBuftarget->iTRNSgray = 0;
pBuftarget->iTRNSred = pBufdelta->iTRNSred;
pBuftarget->iTRNSgreen = pBufdelta->iTRNSgreen;
pBuftarget->iTRNSblue = pBufdelta->iTRNSblue;
pBuftarget->iTRNScount = 0;
break;
}
case 3: { /* indexed */
pBuftarget->iTRNSgray = 0;
pBuftarget->iTRNSred = 0;
pBuftarget->iTRNSgreen = 0;
pBuftarget->iTRNSblue = 0;
/* existing range smaller than new one ? */
if ((!pBuftarget->bHasTRNS) || (pBuftarget->iTRNScount < pBufdelta->iTRNScount))
pBuftarget->iTRNScount = pBufdelta->iTRNScount;
MNG_COPY (pBuftarget->aTRNSentries, pBufdelta->aTRNSentries, pBufdelta->iTRNScount)
break;
}
}
pBuftarget->bHasTRNS = MNG_TRUE; /* tell it it's got a tRNS now */
}
if (pBufdelta->bHasBKGD) /* bkgd in source ? */
{ /* drop it onto the target */
pBuftarget->bHasBKGD = MNG_TRUE;
pBuftarget->iBKGDindex = pBufdelta->iBKGDindex;
pBuftarget->iBKGDgray = pBufdelta->iBKGDgray;
pBuftarget->iBKGDred = pBufdelta->iBKGDred;
pBuftarget->iBKGDgreen = pBufdelta->iBKGDgreen;
pBuftarget->iBKGDblue = pBufdelta->iBKGDblue;
}
if (pBufdelta->bHasGAMA) /* gamma in source ? */
{
pBuftarget->bHasGAMA = MNG_TRUE; /* drop it onto the target */
pBuftarget->iGamma = pBufdelta->iGamma;
}
if (pBufdelta->bHasCHRM) /* chroma in delta ? */
{ /* drop it onto the target */
pBuftarget->bHasCHRM = MNG_TRUE;
pBuftarget->iWhitepointx = pBufdelta->iWhitepointx;
pBuftarget->iWhitepointy = pBufdelta->iWhitepointy;
pBuftarget->iPrimaryredx = pBufdelta->iPrimaryredx;
pBuftarget->iPrimaryredy = pBufdelta->iPrimaryredy;
pBuftarget->iPrimarygreenx = pBufdelta->iPrimarygreenx;
pBuftarget->iPrimarygreeny = pBufdelta->iPrimarygreeny;
pBuftarget->iPrimarybluex = pBufdelta->iPrimarybluex;
pBuftarget->iPrimarybluey = pBufdelta->iPrimarybluey;
}
if (pBufdelta->bHasSRGB) /* sRGB in delta ? */
{ /* drop it onto the target */
pBuftarget->bHasSRGB = MNG_TRUE;
pBuftarget->iRenderingintent = pBufdelta->iRenderingintent;
}
if (pBufdelta->bHasICCP) /* ICC profile in delta ? */
{
pBuftarget->bHasICCP = MNG_TRUE; /* drop it onto the target */
if (pBuftarget->pProfile) /* profile existed ? */
MNG_FREEX (pData, pBuftarget->pProfile, pBuftarget->iProfilesize)
/* allocate a buffer & copy it */
MNG_ALLOC (pData, pBuftarget->pProfile, pBufdelta->iProfilesize)
MNG_COPY (pBuftarget->pProfile, pBufdelta->pProfile, pBufdelta->iProfilesize)
/* store it's length as well */
pBuftarget->iProfilesize = pBufdelta->iProfilesize;
}
/* need to execute delta pixels ? */
if ((!pData->bDeltaimmediate) && (pData->iDeltatype != MNG_DELTATYPE_NOCHANGE))
{
pData->fScalerow = MNG_NULL; /* not needed by default */
switch (pBuftarget->iBitdepth) /* determine scaling routine */
{
}
pData->fDeltarow = MNG_NULL; /* let's assume there's nothing to do */
switch (pBuftarget->iColortype) /* determine delta processing routine */
{
case 0 : ;
case 8 : { /* gray */
if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) )
{
if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3) ||
(pBufdelta->iColortype == 8))
{
switch (pBuftarget->iBitdepth)
{
case 1 : { pData->fDeltarow = (mng_fptr)delta_g1_g1; break; }
case 2 : { pData->fDeltarow = (mng_fptr)delta_g2_g2; break; }
case 4 : { pData->fDeltarow = (mng_fptr)delta_g4_g4; break; }
case 8 : { pData->fDeltarow = (mng_fptr)delta_g8_g8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_g16_g16; break; }
}
}
}
break;
}
case 2 : ;
case 10 : { /* rgb */
if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) )
{
if ((pBufdelta->iColortype == 2) || (pBufdelta->iColortype == 10))
{
switch (pBuftarget->iBitdepth)
{
case 8 : { pData->fDeltarow = (mng_fptr)delta_rgb8_rgb8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_rgb16_rgb16; break; }
}
}
}
break;
}
case 3 : { /* indexed; abuse gray routines */
if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) )
{
if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3))
{
switch (pBuftarget->iBitdepth)
{
case 1 : { pData->fDeltarow = (mng_fptr)delta_g1_g1; break; }
case 2 : { pData->fDeltarow = (mng_fptr)delta_g2_g2; break; }
case 4 : { pData->fDeltarow = (mng_fptr)delta_g4_g4; break; }
case 8 : { pData->fDeltarow = (mng_fptr)delta_g8_g8; break; }
}
}
}
break;
}
case 4 : ;
case 12 : { /* gray + alpha */
if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) )
{
if ((pBufdelta->iColortype == 4) || (pBufdelta->iColortype == 12))
{
switch (pBuftarget->iBitdepth)
{
case 8 : { pData->fDeltarow = (mng_fptr)delta_ga8_ga8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_ga16_ga16; break; }
}
}
}
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) )
{
if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3) ||
(pBufdelta->iColortype == 8))
{
switch (pBuftarget->iBitdepth)
{
case 8 : { pData->fDeltarow = (mng_fptr)delta_ga8_g8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_ga16_g16; break; }
}
}
}
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) )
{
if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3))
{
switch (pBuftarget->iBitdepth)
{
case 8 : { pData->fDeltarow = (mng_fptr)delta_ga8_a8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_ga16_a16; break; }
}
}
}
break;
}
case 6 : ;
case 14 : { /* rgb + alpha */
if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) )
{
if ((pBufdelta->iColortype == 6) || (pBufdelta->iColortype == 14))
{
switch (pBuftarget->iBitdepth)
{
case 8 : { pData->fDeltarow = (mng_fptr)delta_rgba8_rgba8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_rgba16_rgba16; break; }
}
}
}
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) )
{
if ((pBufdelta->iColortype == 2) || (pBufdelta->iColortype == 10))
{
switch (pBuftarget->iBitdepth)
{
case 8 : { pData->fDeltarow = (mng_fptr)delta_rgba8_rgb8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_rgba16_rgb16; break; }
}
}
}
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) )
{
if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3))
{
switch (pBuftarget->iBitdepth)
{
case 8 : { pData->fDeltarow = (mng_fptr)delta_rgba8_a8; break; }
case 16 : { pData->fDeltarow = (mng_fptr)delta_rgba16_a16; break; }
}
}
}
break;
}
}
if (pData->fDeltarow) /* do we need to take action ? */
{
pData->iPass = -1; /* setup row dimensions and stuff */
pData->iRow = pData->iDeltaBlocky;
pData->iRowinc = 1;
pData->iCol = pData->iDeltaBlockx;
pData->iColinc = 1;
pData->iRowsamples = pBufdelta->iWidth;
pData->iRowsize = pBuftarget->iRowsize;
/* indicate where to retrieve & where to store */
pData->pRetrieveobj = (mng_objectp)pDelta;
pData->pStoreobj = (mng_objectp)pTarget;
if (pData->pRGBArow) /* prevent duplicate allocation! */
MNG_FREE (pData, pData->pRGBArow, (pData->iDatawidth << 3))
/* get a temporary row-buffer */
MNG_ALLOC (pData, pData->pRGBArow, pBufdelta->iRowsize)
iY = 0; /* this is where we start */
iRetcode = MNG_NOERROR; /* still oke for now */
while ((!iRetcode) && (iY < pBufdelta->iHeight))
{ /* get a row */
mng_uint8p pWork = pBufdelta->pImgdata + (iY * pBufdelta->iRowsize);
MNG_COPY (pData->pRGBArow, pWork, pBufdelta->iRowsize);
if (pData->fScalerow) /* scale it (if necessary) */
iRetcode = ((mng_scalerow)pData->fScalerow) (pData);
if (!iRetcode) /* and... execute it */
iRetcode = ((mng_deltarow)pData->fDeltarow) (pData);
if (!iRetcode) /* adjust variables for next row */
iRetcode = next_row (pData);
iY++; /* and next line */
}
/* drop the temporary row-buffer */
MNG_FREE (pData, pData->pRGBArow, pBufdelta->iRowsize)
if (iRetcode) /* on error bail out */
return iRetcode;
}
else
MNG_ERROR (pData, MNG_INVALIDDELTA)
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_EXECUTE_DELTA_IMAGE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode save_state (mng_datap pData)
{
mng_savedatap pSave;
mng_imagep pImage;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_SAVE_STATE, MNG_LC_START)
#endif
if (pData->pSavedata) /* sanity check */
MNG_ERROR (pData, MNG_INTERNALERROR)
/* get a buffer for saving */
MNG_ALLOC (pData, pData->pSavedata, sizeof (mng_savedata))
pSave = pData->pSavedata; /* address it more directly */
/* and copy global data from the main struct */
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
pSave->bHasglobalPLTE = pData->bHasglobalPLTE;
pSave->bHasglobalTRNS = pData->bHasglobalTRNS;
pSave->bHasglobalGAMA = pData->bHasglobalGAMA;
pSave->bHasglobalCHRM = pData->bHasglobalCHRM;
pSave->bHasglobalSRGB = pData->bHasglobalSRGB;
pSave->bHasglobalICCP = pData->bHasglobalICCP;
pSave->bHasglobalBKGD = pData->bHasglobalBKGD;
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
pSave->iBACKred = pData->iBACKred;
pSave->iBACKgreen = pData->iBACKgreen;
pSave->iBACKblue = pData->iBACKblue;
pSave->iBACKmandatory = pData->iBACKmandatory;
pSave->iBACKimageid = pData->iBACKimageid;
pSave->iBACKtile = pData->iBACKtile;
pSave->iFRAMmode = pData->iFRAMmode;
pSave->iFRAMdelay = pData->iFRAMdelay;
pSave->iFRAMtimeout = pData->iFRAMtimeout;
pSave->bFRAMclipping = pData->bFRAMclipping;
pSave->iFRAMclipl = pData->iFRAMclipl;
pSave->iFRAMclipr = pData->iFRAMclipr;
pSave->iFRAMclipt = pData->iFRAMclipt;
pSave->iFRAMclipb = pData->iFRAMclipb;
pSave->iGlobalPLTEcount = pData->iGlobalPLTEcount;
MNG_COPY (pSave->aGlobalPLTEentries, pData->aGlobalPLTEentries, sizeof (mng_rgbpaltab))
pSave->iGlobalTRNSrawlen = pData->iGlobalTRNSrawlen;
MNG_COPY (pSave->aGlobalTRNSrawdata, pData->aGlobalTRNSrawdata, 256)
pSave->iGlobalGamma = pData->iGlobalGamma;
pSave->iGlobalWhitepointx = pData->iGlobalWhitepointx;
pSave->iGlobalWhitepointy = pData->iGlobalWhitepointy;
pSave->iGlobalPrimaryredx = pData->iGlobalPrimaryredx;
pSave->iGlobalPrimaryredy = pData->iGlobalPrimaryredy;
pSave->iGlobalPrimarygreenx = pData->iGlobalPrimarygreenx;
pSave->iGlobalPrimarygreeny = pData->iGlobalPrimarygreeny;
pSave->iGlobalPrimarybluex = pData->iGlobalPrimarybluex;
pSave->iGlobalPrimarybluey = pData->iGlobalPrimarybluey;
pSave->iGlobalRendintent = pData->iGlobalRendintent;
pSave->iGlobalProfilesize = pData->iGlobalProfilesize;
if (pSave->iGlobalProfilesize) /* has a profile ? */
{ /* then copy that ! */
MNG_ALLOC (pData, pSave->pGlobalProfile, pSave->iGlobalProfilesize)
MNG_COPY (pSave->pGlobalProfile, pData->pGlobalProfile, pSave->iGlobalProfilesize)
}
pSave->iGlobalBKGDred = pData->iGlobalBKGDred;
pSave->iGlobalBKGDgreen = pData->iGlobalBKGDgreen;
pSave->iGlobalBKGDblue = pData->iGlobalBKGDblue;
/* freeze current image objects */
pImage = (mng_imagep)pData->pFirstimgobj;
while (pImage)
{ /* freeze the object AND it's buffer */
pImage->bFrozen = MNG_TRUE;
pImage->pImgbuf->bFrozen = MNG_TRUE;
/* neeeext */
pImage = (mng_imagep)pImage->sHeader.pNext;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_SAVE_STATE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode mng_reset_objzero (mng_datap pData)
{
mng_imagep pImage = (mng_imagep)pData->pObjzero;
mng_retcode iRetcode = reset_object_details (pData, pImage, 0, 0, 0,
0, 0, 0, 0, MNG_TRUE);
if (iRetcode) /* on error bail out */
return iRetcode;
pImage->bVisible = MNG_TRUE;
pImage->bViewable = MNG_TRUE;
pImage->iPosx = 0;
pImage->iPosy = 0;
pImage->bClipped = MNG_FALSE;
pImage->iClipl = 0;
pImage->iClipr = 0;
pImage->iClipt = 0;
pImage->iClipb = 0;
pImage->iMAGN_MethodX = 0;
pImage->iMAGN_MethodY = 0;
pImage->iMAGN_MX = 0;
pImage->iMAGN_MY = 0;
pImage->iMAGN_ML = 0;
pImage->iMAGN_MR = 0;
pImage->iMAGN_MT = 0;
pImage->iMAGN_MB = 0;
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode restore_state (mng_datap pData)
{
mng_savedatap pSave;
mng_imagep pImage;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_RESTORE_STATE, MNG_LC_START)
#endif
/* restore object 0 status !!! */
iRetcode = mng_reset_objzero (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
/* fresh cycle; fake no frames done yet */
pData->bFramedone = MNG_FALSE;
if (pData->pSavedata) /* do we have a saved state ? */
{
pSave = pData->pSavedata; /* address it more directly */
/* and copy it back to the main struct */
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
pData->bHasglobalPLTE = pSave->bHasglobalPLTE;
pData->bHasglobalTRNS = pSave->bHasglobalTRNS;
pData->bHasglobalGAMA = pSave->bHasglobalGAMA;
pData->bHasglobalCHRM = pSave->bHasglobalCHRM;
pData->bHasglobalSRGB = pSave->bHasglobalSRGB;
pData->bHasglobalICCP = pSave->bHasglobalICCP;
pData->bHasglobalBKGD = pSave->bHasglobalBKGD;
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
pData->iBACKred = pSave->iBACKred;
pData->iBACKgreen = pSave->iBACKgreen;
pData->iBACKblue = pSave->iBACKblue;
pData->iBACKmandatory = pSave->iBACKmandatory;
pData->iBACKimageid = pSave->iBACKimageid;
pData->iBACKtile = pSave->iBACKtile;
pData->iFRAMmode = pSave->iFRAMmode;
pData->iFRAMdelay = pSave->iFRAMdelay;
pData->iFRAMtimeout = pSave->iFRAMtimeout;
pData->bFRAMclipping = pSave->bFRAMclipping;
pData->iFRAMclipl = pSave->iFRAMclipl;
pData->iFRAMclipr = pSave->iFRAMclipr;
pData->iFRAMclipt = pSave->iFRAMclipt;
pData->iFRAMclipb = pSave->iFRAMclipb;
/* also the next subframe parms */
pData->iFramemode = pSave->iFRAMmode;
pData->iFramedelay = pSave->iFRAMdelay;
pData->iFrametimeout = pSave->iFRAMtimeout;
pData->bFrameclipping = pSave->bFRAMclipping;
pData->iFrameclipl = pSave->iFRAMclipl;
pData->iFrameclipr = pSave->iFRAMclipr;
pData->iFrameclipt = pSave->iFRAMclipt;
pData->iFrameclipb = pSave->iFRAMclipb;
pData->iNextdelay = pSave->iFRAMdelay;
pData->iGlobalPLTEcount = pSave->iGlobalPLTEcount;
MNG_COPY (pData->aGlobalPLTEentries, pSave->aGlobalPLTEentries, sizeof (mng_rgbpaltab))
pData->iGlobalTRNSrawlen = pSave->iGlobalTRNSrawlen;
MNG_COPY (pData->aGlobalTRNSrawdata, pSave->aGlobalTRNSrawdata, 256)
pData->iGlobalGamma = pSave->iGlobalGamma;
pData->iGlobalWhitepointx = pSave->iGlobalWhitepointx;
pData->iGlobalWhitepointy = pSave->iGlobalWhitepointy;
pData->iGlobalPrimaryredx = pSave->iGlobalPrimaryredx;
pData->iGlobalPrimaryredy = pSave->iGlobalPrimaryredy;
pData->iGlobalPrimarygreenx = pSave->iGlobalPrimarygreenx;
pData->iGlobalPrimarygreeny = pSave->iGlobalPrimarygreeny;
pData->iGlobalPrimarybluex = pSave->iGlobalPrimarybluex;
pData->iGlobalPrimarybluey = pSave->iGlobalPrimarybluey;
pData->iGlobalRendintent = pSave->iGlobalRendintent;
pData->iGlobalProfilesize = pSave->iGlobalProfilesize;
if (pData->iGlobalProfilesize) /* has a profile ? */
{ /* then copy that ! */
MNG_ALLOC (pData, pData->pGlobalProfile, pData->iGlobalProfilesize)
MNG_COPY (pData->pGlobalProfile, pSave->pGlobalProfile, pData->iGlobalProfilesize)
}
pData->iGlobalBKGDred = pSave->iGlobalBKGDred;
pData->iGlobalBKGDgreen = pSave->iGlobalBKGDgreen;
pData->iGlobalBKGDblue = pSave->iGlobalBKGDblue;
}
else /* no saved-data; so reset the lot */
{
#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
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->bHasglobalBKGD = MNG_FALSE;
#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
if (!pData->bEMNGMAhack) /* TODO: remove line in 1.0.0 !!! */
{ /* TODO: remove line in 1.0.0 !!! */
pData->iBACKred = 0;
pData->iBACKgreen = 0;
pData->iBACKblue = 0;
pData->iBACKmandatory = 0;
pData->iBACKimageid = 0;
pData->iBACKtile = 0;
} /* TODO: remove line in 1.0.0 !!! */
pData->iFRAMmode = 1;
pData->iFRAMdelay = 1;
pData->iFRAMtimeout = 0x7fffffffl;
pData->bFRAMclipping = MNG_FALSE;
pData->iFRAMclipl = 0;
pData->iFRAMclipr = 0;
pData->iFRAMclipt = 0;
pData->iFRAMclipb = 0;
/* also the next subframe parms */
pData->iFramemode = 1;
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->iGlobalPLTEcount = 0;
pData->iGlobalTRNSrawlen = 0;
pData->iGlobalGamma = 0;
pData->iGlobalWhitepointx = 0;
pData->iGlobalWhitepointy = 0;
pData->iGlobalPrimaryredx = 0;
pData->iGlobalPrimaryredy = 0;
pData->iGlobalPrimarygreenx = 0;
pData->iGlobalPrimarygreeny = 0;
pData->iGlobalPrimarybluex = 0;
pData->iGlobalPrimarybluey = 0;
pData->iGlobalRendintent = 0;
if (pData->iGlobalProfilesize) /* free a previous profile ? */
MNG_FREE (pData, pData->pGlobalProfile, pData->iGlobalProfilesize)
pData->iGlobalProfilesize = 0;
pData->iGlobalBKGDred = 0;
pData->iGlobalBKGDgreen = 0;
pData->iGlobalBKGDblue = 0;
}
if (!pData->bEMNGMAhack) /* TODO: remove line in 1.0.0 !!! */
{ /* TODO: remove line in 1.0.0 !!! */
/* drop un-frozen image objects */
pImage = (mng_imagep)pData->pFirstimgobj;
while (pImage)
{ /* is it un-frozen ? */
if (!pImage->bFrozen)
{
mng_imagep pPrev = (mng_imagep)pImage->sHeader.pPrev;
mng_imagep pNext = (mng_imagep)pImage->sHeader.pNext;
if (pPrev) /* unlink it */
pPrev->sHeader.pNext = pNext;
else
pData->pFirstimgobj = pNext;
if (pNext)
pNext->sHeader.pPrev = pPrev;
else
pData->pLastimgobj = pPrev;
if (pImage->pImgbuf->bFrozen) /* buffer frozen ? */
{
if (pImage->pImgbuf->iRefcount <= 2)
MNG_ERROR (pData, MNG_INTERNALERROR)
/* decrease ref counter */
pImage->pImgbuf->iRefcount--;
/* just cleanup the object then */
MNG_FREEX (pData, pImage, sizeof (mng_image))
}
else
{ /* free the image buffer */
iRetcode = free_imagedataobject (pData, pImage->pImgbuf);
/* and cleanup the object */
MNG_FREEX (pData, pImage, sizeof (mng_image))
if (iRetcode) /* on error bail out */
return iRetcode;
}
pImage = pNext; /* this is the next */
}
else /* neeeext */
pImage = (mng_imagep)pImage->sHeader.pNext;
}
} /* TODO: remove line in 1.0.0 !!! */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_RESTORE_STATE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
/* * * */
/* * General display processing routine * */
/* * * */
/* ************************************************************************** */
mng_retcode process_display (mng_datap pData)
{
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY, MNG_LC_START)
#endif
if (!pData->iBreakpoint) /* not broken previously ? */
{
if ((pData->iRequestframe) || (pData->iRequestlayer) || (pData->iRequesttime))
{
pData->bSearching = MNG_TRUE; /* indicate we're searching */
iRetcode = clear_canvas (pData); /* make the canvas virgin black ?!? */
if (iRetcode) /* on error bail out */
return iRetcode;
/* let's start from the top, shall we */
pData->pCurraniobj = pData->pFirstaniobj;
}
}
do /* process the objects */
{
if (pData->bSearching) /* are we looking sor something ? */
{
if ((pData->iRequestframe) &&
(pData->iRequestframe < ((mng_object_headerp)pData->pCurraniobj)->iFramenr))
{
pData->iRequestframe = 0; /* found the frame ! */
pData->bSearching = MNG_FALSE;
}
else
if ((pData->iRequestlayer) &&
(pData->iRequestlayer < ((mng_object_headerp)pData->pCurraniobj)->iLayernr))
{
pData->iRequestlayer = 0; /* found the layer ! */
pData->bSearching = MNG_FALSE;
}
else
if ((pData->iRequesttime) &&
(pData->iRequesttime < ((mng_object_headerp)pData->pCurraniobj)->iPlaytime))
{
pData->iRequesttime = 0; /* found the playtime ! */
pData->bSearching = MNG_FALSE;
}
}
/* do we need to finish something first ? */
if ((pData->iBreakpoint) && (pData->iBreakpoint < 99))
{
switch (pData->iBreakpoint) /* return to broken display routine */
{
case 1 : { iRetcode = process_display_fram2 (pData); break; }
case 3 : ; /* same as 4 !!! */
case 4 : { iRetcode = process_display_show (pData); break; }
case 5 : { iRetcode = process_display_clon2 (pData); break; }
case 9 : { iRetcode = process_display_magn2 (pData); break; }
default : MNG_ERROR (pData, MNG_INTERNALERROR)
}
}
else
{
if (pData->pCurraniobj)
iRetcode = ((mng_object_headerp)pData->pCurraniobj)->fProcess (pData, pData->pCurraniobj);
}
if (!pData->bTimerset) /* reset breakpoint flag ? */
pData->iBreakpoint = 0;
/* can we advance to next object ? */
if ((!iRetcode) && (pData->pCurraniobj) &&
(!pData->bTimerset) && (!pData->bSectionwait))
{
pData->pCurraniobj = ((mng_object_headerp)pData->pCurraniobj)->pNext;
/* MEND processing to be done ? */
if ((pData->eImagetype == mng_it_mng) && (!pData->pCurraniobj))
iRetcode = process_display_mend (pData);
if (!pData->pCurraniobj) /* refresh after last image ? */
pData->bNeedrefresh = MNG_TRUE;
}
} /* until error or a break or no more objects */
while ((!iRetcode) && (pData->pCurraniobj) &&
(!pData->bTimerset) && (!pData->bSectionwait) && (!pData->bFreezing));
if (iRetcode) /* on error bail out */
return iRetcode;
/* refresh needed ? */
if ((!pData->bTimerset) && (pData->bNeedrefresh))
{
iRetcode = display_progressive_refresh (pData, 1);
if (iRetcode) /* on error bail out */
return iRetcode;
}
/* timer break ? */
if ((pData->bTimerset) && (!pData->iBreakpoint))
pData->iBreakpoint = 99;
else
if (!pData->bTimerset)
pData->iBreakpoint = 0; /* reset if no timer break */
if ((!pData->bTimerset) && (!pData->pCurraniobj))
pData->bRunning = MNG_FALSE; /* all done now ! */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
/* * * */
/* * Chunk display processing routines * */
/* * * */
/* ************************************************************************** */
mng_retcode process_display_ihdr (mng_datap pData)
{ /* address the current "object" if any */
mng_imagep pImage = (mng_imagep)pData->pCurrentobj;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IHDR, MNG_LC_START)
#endif
if (!pData->bHasDHDR)
{
pData->fInitrowproc = MNG_NULL; /* do nothing by default */
pData->fDisplayrow = MNG_NULL;
pData->fCorrectrow = MNG_NULL;
pData->fStorerow = MNG_NULL;
pData->fProcessrow = MNG_NULL;
pData->fDifferrow = MNG_NULL;
pData->pStoreobj = MNG_NULL;
}
if (!pData->iBreakpoint) /* not previously broken ? */
{
mng_retcode iRetcode = MNG_NOERROR;
if (pData->bHasDHDR) /* is a delta-image ? */
{
if (pData->iDeltatype == MNG_DELTATYPE_REPLACE)
iRetcode = reset_object_details (pData, (mng_imagep)pData->pDeltaImage,
pData->iDatawidth, pData->iDataheight,
pData->iBitdepth, pData->iColortype,
pData->iCompression, pData->iFilter,
pData->iInterlace, MNG_TRUE);
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) )
{
((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iBitdepth;
((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iBitdepth;
}
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) )
((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iBitdepth;
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) )
((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iBitdepth;
/* process immediatly if bitdepth & colortype are equal */
pData->bDeltaimmediate =
(mng_bool)((pData->iBitdepth == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iBitdepth ) &&
(pData->iColortype == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iColortype) );
}
else
{
if (pImage) /* update object buffer ? */
iRetcode = reset_object_details (pData, pImage,
pData->iDatawidth, pData->iDataheight,
pData->iBitdepth, pData->iColortype,
pData->iCompression, pData->iFilter,
pData->iInterlace, MNG_TRUE);
else
iRetcode = reset_object_details (pData, (mng_imagep)pData->pObjzero,
pData->iDatawidth, pData->iDataheight,
pData->iBitdepth, pData->iColortype,
pData->iCompression, pData->iFilter,
pData->iInterlace, MNG_TRUE);
}
if (iRetcode) /* on error bail out */
return iRetcode;
}
if (!pData->bHasDHDR)
{
if (pImage) /* real object ? */
pData->pStoreobj = pImage; /* tell the row routines */
else /* otherwise use object 0 */
pData->pStoreobj = pData->pObjzero;
/* display "on-the-fly" ? */
if ( (((mng_imagep)pData->pStoreobj)->iMAGN_MethodX == 0) &&
(((mng_imagep)pData->pStoreobj)->iMAGN_MethodY == 0) &&
( (pData->eImagetype == mng_it_png ) ||
(((mng_imagep)pData->pStoreobj)->bVisible) ) )
{
next_layer (pData); /* that's a new layer then ! */
if (pData->bTimerset) /* timer break ? */
pData->iBreakpoint = 2;
else
{
pData->iBreakpoint = 0;
/* anything to display ? */
if ((pData->iDestr > pData->iDestl) && (pData->iDestb > pData->iDestt))
set_display_routine (pData); /* then determine display routine */
}
}
}
if (!pData->bTimerset) /* no timer break ? */
{
switch (pData->iColortype) /* determine row initialization routine */
{
case 0 : { /* gray */
switch (pData->iBitdepth)
{
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g1_ni;
else
pData->fInitrowproc = (mng_fptr)init_g1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g2_ni;
else
pData->fInitrowproc = (mng_fptr)init_g2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g4_ni;
else
pData->fInitrowproc = (mng_fptr)init_g4_i;
break;
}
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g8_ni;
else
pData->fInitrowproc = (mng_fptr)init_g8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g16_ni;
else
pData->fInitrowproc = (mng_fptr)init_g16_i;
break;
}
}
break;
}
case 2 : { /* rgb */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgb8_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgb8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgb16_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgb16_i;
break;
}
}
break;
}
case 3 : { /* indexed */
switch (pData->iBitdepth)
{
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx1_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx2_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx4_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx4_i;
break;
}
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx8_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx8_i;
break;
}
}
break;
}
case 4 : { /* gray+alpha */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_ga8_ni;
else
pData->fInitrowproc = (mng_fptr)init_ga8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_ga16_ni;
else
pData->fInitrowproc = (mng_fptr)init_ga16_i;
break;
}
}
break;
}
case 6 : { /* rgb+alpha */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgba8_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgba8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgba16_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgba16_i;
break;
}
}
break;
}
}
pData->iFilterofs = 0; /* determine filter characteristics */
pData->iLevel0 = 0; /* default levels */
pData->iLevel1 = 0;
pData->iLevel2 = 0;
pData->iLevel3 = 0;
/* leveling & differing ? */
/* if (pData->iFilter & 0x40)
{
switch (pData->iColortype)
{
case 0 : {
if (pData->iBitdepth <= 8)
pData->iFilterofs = 1;
else
pData->iFilterofs = 2;
break;
}
case 2 : {
if (pData->iBitdepth <= 8)
pData->iFilterofs = 3;
else
pData->iFilterofs = 6;
break;
}
case 3 : {
pData->iFilterofs = 1;
break;
}
case 4 : {
if (pData->iBitdepth <= 8)
pData->iFilterofs = 2;
else
pData->iFilterofs = 4;
break;
}
case 6 : {
if (pData->iBitdepth <= 8)
pData->iPixelofs = 5;
else
pData->iFilterofs = 8;
break;
}
}
} */
/* no adaptive filtering ? */
/* if (pData->iFilter & 0x01)
pData->iPixelofs = pData->iFilterofs;
else */
pData->iPixelofs = pData->iFilterofs + 1;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IHDR, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_idat (mng_datap pData,
mng_uint32 iRawlen,
mng_uint8p pRawdata)
{
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IDAT, MNG_LC_START)
#endif
if (pData->bRestorebkgd) /* need to restore the background ? */
{
pData->bRestorebkgd = MNG_FALSE;
iRetcode = load_bkgdlayer (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
if ((pData->bDisplaying) && (pData->bRunning))
pData->iLayerseq++; /* and it counts as a layer then ! */
}
if (pData->fInitrowproc) /* need to initialize row processing? */
{
iRetcode = ((mng_initrowproc)pData->fInitrowproc) (pData);
pData->fInitrowproc = MNG_NULL; /* only call this once !!! */
}
if ((!iRetcode) && (!pData->bInflating))
/* initialize inflate */
iRetcode = mngzlib_inflateinit (pData);
if (!iRetcode) /* all ok? then inflate, my man */
iRetcode = mngzlib_inflaterows (pData, iRawlen, pRawdata);
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IDAT, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_iend (mng_datap pData)
{
mng_retcode iRetcode, iRetcode2;
mng_bool bDodisplay = MNG_FALSE;
mng_bool bMagnify = MNG_FALSE;
mng_bool bCleanup = (mng_bool)(pData->iBreakpoint != 0);
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IEND, MNG_LC_START)
#endif
#ifdef MNG_INCLUDE_JNG /* progressive+alpha JNG can be displayed now */
if ( (pData->bHasJHDR ) &&
( (pData->bJPEGprogressive) || (pData->bJPEGprogressive2)) &&
( (pData->eImagetype == mng_it_jng ) ||
(((mng_imagep)pData->pStoreobj)->bVisible) ) &&
( (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) ||
(pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) )
bDodisplay = MNG_TRUE;
#endif
if ( (pData->pStoreobj) && /* on-the-fly magnification ? */
( (((mng_imagep)pData->pStoreobj)->iMAGN_MethodX) ||
(((mng_imagep)pData->pStoreobj)->iMAGN_MethodY) ) )
bMagnify = MNG_TRUE;
if ((pData->bHasBASI) || /* was it a BASI stream */
(bDodisplay) || /* or should we display the JNG */
(bMagnify) || /* or should we magnify it */
/* or did we get broken here last time ? */
((pData->iBreakpoint) && (pData->iBreakpoint != 8)))
{
mng_imagep pImage = (mng_imagep)pData->pCurrentobj;
if (!pImage) /* or was it object 0 ? */
pImage = (mng_imagep)pData->pObjzero;
/* display it now then ? */
if ((pImage->bVisible) && (pImage->bViewable))
{ /* ok, so do it */
iRetcode = display_image (pData, pImage, bDodisplay);
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bTimerset) /* timer break ? */
pData->iBreakpoint = 6;
}
}
else
if ((pData->bHasDHDR) || /* was it a DHDR stream */
(pData->iBreakpoint == 8)) /* or did we get broken here last time ? */
{
mng_imagep pImage = (mng_imagep)pData->pDeltaImage;
if (!pData->iBreakpoint)
{ /* perform the delta operations needed */
iRetcode = execute_delta_image (pData, pImage, (mng_imagep)pData->pObjzero);
if (iRetcode) /* on error bail out */
return iRetcode;
}
/* display it now then ? */
if ((pImage->bVisible) && (pImage->bViewable))
{ /* ok, so do it */
iRetcode = display_image (pData, pImage, MNG_FALSE);
if (iRetcode) /* on error bail out */
return iRetcode;
if (pData->bTimerset) /* timer break ? */
pData->iBreakpoint = 8;
}
}
if (!pData->bTimerset) /* can we continue ? */
{
pData->iBreakpoint = 0; /* clear this flag now ! */
/* cleanup object 0 */
reset_object_details (pData, (mng_imagep)pData->pObjzero,
0, 0, 0, 0, 0, 0, 0, MNG_TRUE);
if (pData->bInflating) /* if we've been inflating */
{ /* cleanup row-processing, */
iRetcode = cleanup_rowproc (pData);
/* also cleanup inflate! */
iRetcode2 = mngzlib_inflatefree (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
if (iRetcode2)
return iRetcode2;
}
#ifdef MNG_INCLUDE_JNG
if (pData->bJPEGdecompress) /* if we've been decompressing JDAT */
{ /* cleanup row-processing, */
iRetcode = cleanup_rowproc (pData);
/* also cleanup decompress! */
iRetcode2 = mngjpeg_decompressfree (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
if (iRetcode2)
return iRetcode2;
}
if (pData->bJPEGdecompress2) /* if we've been decompressing JDAA */
{ /* cleanup row-processing, */
iRetcode = cleanup_rowproc (pData);
/* also cleanup decompress! */
iRetcode2 = mngjpeg_decompressfree2 (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
if (iRetcode2)
return iRetcode2;
}
#endif
if (bCleanup) /* if we got broken last time we need to cleanup */
{
pData->bHasIHDR = MNG_FALSE; /* IEND signals the end for most ... */
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;
}
/* if the image was displayed on the fly, */
/* we'll have to make the app refresh */
if ((pData->eImagetype != mng_it_mng) && (pData->fDisplayrow))
pData->bNeedrefresh = MNG_TRUE;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IEND, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_mend (mng_datap pData)
{
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MEND, MNG_LC_START)
#endif
/* TERM processed ? */
if ((pData->bDisplaying) && (pData->bRunning) &&
(pData->bHasTERM) && (pData->pTermaniobj))
{
mng_retcode iRetcode;
mng_ani_termp pTERM;
/* get the right animation object ! */
pTERM = (mng_ani_termp)pData->pTermaniobj;
pData->iIterations++; /* increase iteration count */
switch (pTERM->iTermaction) /* determine what to do! */
{
case 0 : { /* show last frame indefinitly */
break; /* piece of cake, that is... */
}
case 1 : { /* cease displaying anything */
pData->bFrameclipping = MNG_FALSE;
load_bkgdlayer (pData);
break;
}
case 2 : { /* show first image after TERM */
/* TODO: something */
break;
}
case 3 : { /* repeat */
if ((pTERM->iItermax) && (pTERM->iItermax < 0x7FFFFFFF))
pTERM->iItermax--;
if (pTERM->iItermax) /* go back to TERM ? */
{ /* restore to initial or SAVE state */
iRetcode = restore_state (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
/* notify the app ? */
if (pData->fProcessmend)
{
mng_bool bOke = pData->fProcessmend ((mng_handle)pData,
pData->iIterations,
pTERM->iItermax);
if (!bOke) /* stop here and now ? */
break;
}
/* restart from TERM chunk */
pData->pCurraniobj = pTERM;
if (pTERM->iDelay) /* set the delay (?) */
{
mng_uint32 iWaitfor = 1000;
/* what are we aiming for */
if (pData->iTicks)
{ /* honor speed modifier */
switch (pData->iSpeed)
{
case mng_st_fast :
{
iWaitfor = (mng_uint32)(( 500 * pTERM->iDelay) / pData->iTicks);
break;
}
case mng_st_slow :
{
iWaitfor = (mng_uint32)((3000 * pTERM->iDelay) / pData->iTicks);
break;
}
case mng_st_slowest :
{
iWaitfor = (mng_uint32)((8000 * pTERM->iDelay) / pData->iTicks);
break;
}
default :
{
iWaitfor = (mng_uint32)((1000 * pTERM->iDelay) / pData->iTicks);
}
}
}
iRetcode = display_progressive_refresh (pData, iWaitfor);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
else
{
switch (pTERM->iIteraction)
{
case 0 : { /* show last frame indefinitly */
break; /* piece of cake, that is... */
}
case 1 : { /* cease displaying anything */
pData->bFrameclipping = MNG_FALSE;
load_bkgdlayer (pData);
break;
}
case 2 : { /* show first image after TERM */
/* TODO: something */
break;
}
}
}
break;
}
}
}
if (!pData->pCurraniobj) /* always let the app refresh at the end ! */
pData->bNeedrefresh = MNG_TRUE;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MEND, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_defi (mng_datap pData)
{
mng_imagep pImage;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DEFI, MNG_LC_START)
#endif
if (!pData->iDEFIobjectid) /* object id=0 ? */
{
pImage = (mng_imagep)pData->pObjzero;
if (pData->bDEFIhasdonotshow)
pImage->bVisible = (mng_bool)(pData->iDEFIdonotshow == 0);
if (pData->bDEFIhasloca)
{
pImage->iPosx = pData->iDEFIlocax;
pImage->iPosy = pData->iDEFIlocay;
}
if (pData->bDEFIhasclip)
{
pImage->bClipped = pData->bDEFIhasclip;
pImage->iClipl = pData->iDEFIclipl;
pImage->iClipr = pData->iDEFIclipr;
pImage->iClipt = pData->iDEFIclipt;
pImage->iClipb = pData->iDEFIclipb;
}
pData->pCurrentobj = 0; /* not a real object ! */
}
else
{ /* already exists ? */
pImage = (mng_imagep)find_imageobject (pData, pData->iDEFIobjectid);
if (!pImage) /* if not; create new */
{
mng_retcode iRetcode = create_imageobject (pData, pData->iDEFIobjectid,
(mng_bool)(pData->iDEFIconcrete == 1),
(mng_bool)(pData->iDEFIdonotshow == 0),
MNG_FALSE, 0, 0, 0, 0, 0, 0, 0,
pData->iDEFIlocax, pData->iDEFIlocay,
pData->bDEFIhasclip,
pData->iDEFIclipl, pData->iDEFIclipr,
pData->iDEFIclipt, pData->iDEFIclipb,
&pImage);
if (iRetcode) /* on error bail out */
return iRetcode;
}
else
{ /* exists; then set new info */
if (pData->bDEFIhasdonotshow)
pImage->bVisible = (mng_bool)(pData->iDEFIdonotshow == 0);
pImage->bViewable = MNG_FALSE;
if (pData->bDEFIhasloca)
{
pImage->iPosx = pData->iDEFIlocax;
pImage->iPosy = pData->iDEFIlocay;
}
if (pData->bDEFIhasclip)
{
pImage->bClipped = pData->bDEFIhasclip;
pImage->iClipl = pData->iDEFIclipl;
pImage->iClipr = pData->iDEFIclipr;
pImage->iClipt = pData->iDEFIclipt;
pImage->iClipb = pData->iDEFIclipb;
}
if (pData->bDEFIhasconcrete)
pImage->pImgbuf->bConcrete = (mng_bool)(pData->iDEFIconcrete == 1);
}
pData->pCurrentobj = pImage; /* others may want to know this */
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DEFI, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_basi (mng_datap pData,
mng_uint16 iRed,
mng_uint16 iGreen,
mng_uint16 iBlue,
mng_bool bHasalpha,
mng_uint16 iAlpha,
mng_uint8 iViewable)
{ /* address the current "object" if any */
mng_imagep pImage = (mng_imagep)pData->pCurrentobj;
mng_uint8p pWork;
mng_uint32 iX;
mng_imagedatap pBuf;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_BASI, MNG_LC_START)
#endif
if (!pImage) /* or is it an "on-the-fly" image ? */
pImage = (mng_imagep)pData->pObjzero;
/* address the object-buffer */
pBuf = pImage->pImgbuf;
pData->fDisplayrow = MNG_NULL; /* do nothing by default */
pData->fCorrectrow = MNG_NULL;
pData->fStorerow = MNG_NULL;
pData->fProcessrow = MNG_NULL;
/* set parms now that they're known */
iRetcode = reset_object_details (pData, pImage, pData->iDatawidth,
pData->iDataheight, pData->iBitdepth,
pData->iColortype, pData->iCompression,
pData->iFilter, pData->iInterlace, MNG_FALSE);
if (iRetcode) /* on error bail out */
return iRetcode;
/* save the viewable flag */
pImage->bViewable = (mng_bool)(iViewable == 1);
pBuf->bViewable = pImage->bViewable;
pData->pStoreobj = pImage; /* let row-routines know which object */
pWork = pBuf->pImgdata; /* fill the object-buffer with the specified
"color" sample */
switch (pData->iColortype) /* depending on color_type & bit_depth */
{
case 0 : { /* gray */
if (pData->iBitdepth == 16)
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
mng_put_uint16 (pWork, iRed);
pWork += 2;
}
}
else
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
*pWork = (mng_uint8)iRed;
pWork++;
}
}
/* force tRNS ? */
if ((bHasalpha) && (!iAlpha))
{
pBuf->bHasTRNS = MNG_TRUE;
pBuf->iTRNSgray = iRed;
}
break;
}
case 2 : { /* rgb */
if (pData->iBitdepth == 16)
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
mng_put_uint16 (pWork, iRed );
mng_put_uint16 (pWork+2, iGreen);
mng_put_uint16 (pWork+4, iBlue );
pWork += 6;
}
}
else
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
*pWork = (mng_uint8)iRed;
*(pWork+1) = (mng_uint8)iGreen;
*(pWork+2) = (mng_uint8)iBlue;
pWork += 3;
}
}
/* force tRNS ? */
if ((bHasalpha) && (!iAlpha))
{
pBuf->bHasTRNS = MNG_TRUE;
pBuf->iTRNSred = iRed;
pBuf->iTRNSgreen = iGreen;
pBuf->iTRNSblue = iBlue;
}
break;
}
case 3 : { /* indexed */
pBuf->bHasPLTE = MNG_TRUE;
switch (pData->iBitdepth)
{
case 1 : { pBuf->iPLTEcount = 2; break; }
case 2 : { pBuf->iPLTEcount = 4; break; }
case 4 : { pBuf->iPLTEcount = 16; break; }
case 8 : { pBuf->iPLTEcount = 256; break; }
default : { pBuf->iPLTEcount = 1; break; }
}
pBuf->aPLTEentries [0].iRed = (mng_uint8)iRed;
pBuf->aPLTEentries [0].iGreen = (mng_uint8)iGreen;
pBuf->aPLTEentries [0].iBlue = (mng_uint8)iBlue;
for (iX = 1; iX < pBuf->iPLTEcount; iX++)
{
pBuf->aPLTEentries [iX].iRed = 0;
pBuf->aPLTEentries [iX].iGreen = 0;
pBuf->aPLTEentries [iX].iBlue = 0;
}
/* force tRNS ? */
if ((bHasalpha) && (iAlpha < 255))
{
pBuf->bHasTRNS = MNG_TRUE;
pBuf->iTRNScount = 1;
pBuf->aTRNSentries [0] = (mng_uint8)iAlpha;
}
break;
}
case 4 : { /* gray+alpha */
if (pData->iBitdepth == 16)
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
mng_put_uint16 (pWork, iRed);
mng_put_uint16 (pWork+2, iAlpha);
pWork += 4;
}
}
else
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
*pWork = (mng_uint8)iRed;
*(pWork+1) = (mng_uint8)iAlpha;
pWork += 2;
}
}
break;
}
case 6 : { /* rgb+alpha */
if (pData->iBitdepth == 16)
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
mng_put_uint16 (pWork, iRed);
mng_put_uint16 (pWork+2, iGreen);
mng_put_uint16 (pWork+4, iBlue);
mng_put_uint16 (pWork+6, iAlpha);
pWork += 8;
}
}
else
{
for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++)
{
*pWork = (mng_uint8)iRed;
*(pWork+1) = (mng_uint8)iGreen;
*(pWork+2) = (mng_uint8)iBlue;
*(pWork+3) = (mng_uint8)iAlpha;
pWork += 4;
}
}
break;
}
}
switch (pData->iColortype) /* determine row initialization routine */
{ /* just to accomodate IDAT if it arrives */
case 0 : { /* gray */
switch (pData->iBitdepth)
{
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g1_ni;
else
pData->fInitrowproc = (mng_fptr)init_g1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g2_ni;
else
pData->fInitrowproc = (mng_fptr)init_g2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g4_ni;
else
pData->fInitrowproc = (mng_fptr)init_g4_i;
break;
}
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g8_ni;
else
pData->fInitrowproc = (mng_fptr)init_g8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g16_ni;
else
pData->fInitrowproc = (mng_fptr)init_g16_i;
break;
}
}
break;
}
case 2 : { /* rgb */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgb8_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgb8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgb16_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgb16_i;
break;
}
}
break;
}
case 3 : { /* indexed */
switch (pData->iBitdepth)
{
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx1_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx2_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx4_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx4_i;
break;
}
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx8_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx8_i;
break;
}
}
break;
}
case 4 : { /* gray+alpha */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_ga8_ni;
else
pData->fInitrowproc = (mng_fptr)init_ga8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_ga16_ni;
else
pData->fInitrowproc = (mng_fptr)init_ga16_i;
break;
}
}
break;
}
case 6 : { /* rgb+alpha */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgba8_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgba8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgba16_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgba16_i;
break;
}
}
break;
}
}
pData->iFilterofs = 0; /* determine filter characteristics */
pData->iLevel0 = 0; /* default levels */
pData->iLevel1 = 0;
pData->iLevel2 = 0;
pData->iLevel3 = 0;
/* leveling & differing ? */
/* if (pData->iFilter & 0x40)
{
switch (pData->iColortype)
{
case 0 : {
if (pData->iBitdepth <= 8)
pData->iFilterofs = 1;
else
pData->iFilterofs = 2;
break;
}
case 2 : {
if (pData->iBitdepth <= 8)
pData->iFilterofs = 3;
else
pData->iFilterofs = 6;
break;
}
case 3 : {
pData->iFilterofs = 1;
break;
}
case 4 : {
if (pData->iBitdepth <= 8)
pData->iFilterofs = 2;
else
pData->iFilterofs = 4;
break;
}
case 6 : {
if (pData->iBitdepth <= 8)
pData->iPixelofs = 5;
else
pData->iFilterofs = 8;
break;
}
}
} */
/* no adaptive filtering ? */
/* if (pData->iFilter & 0x01)
pData->iPixelofs = pData->iFilterofs;
else */
pData->iPixelofs = pData->iFilterofs + 1;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_BASI, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_clon (mng_datap pData,
mng_uint16 iSourceid,
mng_uint16 iCloneid,
mng_uint8 iClonetype,
mng_bool bHasdonotshow,
mng_uint8 iDonotshow,
mng_uint8 iConcrete,
mng_bool bHasloca,
mng_uint8 iLocationtype,
mng_int32 iLocationx,
mng_int32 iLocationy)
{
mng_imagep pSource, pClone;
mng_bool bVisible, bAbstract;
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_START)
#endif
/* locate the source object first */
pSource = find_imageobject (pData, iSourceid);
/* check if the clone exists */
pClone = find_imageobject (pData, iCloneid);
if (!pSource) /* source must exist ! */
MNG_ERROR (pData, MNG_OBJECTUNKNOWN);
if (pClone) /* clone must not exist ! */
MNG_ERROR (pData, MNG_OBJECTEXISTS);
if (bHasdonotshow) /* DoNotShow flag filled ? */
bVisible = (mng_bool)(iDonotshow == 0);
else
bVisible = pSource->bVisible;
bAbstract = (mng_bool)(iConcrete == 1);
switch (iClonetype) /* determine action to take */
{
case 0 : { /* full clone */
iRetcode = clone_imageobject (pData, iCloneid, MNG_FALSE,
bVisible, bAbstract, bHasloca,
iLocationtype, iLocationx, iLocationy,
pSource, &pClone);
break;
}
case 1 : { /* partial clone */
iRetcode = clone_imageobject (pData, iCloneid, MNG_TRUE,
bVisible, bAbstract, bHasloca,
iLocationtype, iLocationx, iLocationy,
pSource, &pClone);
break;
}
case 2 : { /* renumber object */
iRetcode = renum_imageobject (pData, pSource, iCloneid,
bVisible, bAbstract, bHasloca,
iLocationtype, iLocationx, iLocationy);
pClone = pSource;
break;
}
}
if (iRetcode) /* on error bail out */
return iRetcode;
/* display on the fly ? */
if ((pClone->bViewable) && (pClone->bVisible))
{
pData->pLastclone = pClone; /* remember in case of timer break ! */
/* display it */
display_image (pData, pClone, MNG_FALSE);
if (pData->bTimerset) /* timer break ? */
pData->iBreakpoint = 5;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_clon2 (mng_datap pData)
{
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_START)
#endif
/* only called after timer break ! */
display_image (pData, (mng_imagep)pData->pLastclone, MNG_FALSE);
pData->iBreakpoint = 0;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_disc (mng_datap pData,
mng_uint32 iCount,
mng_uint16p pIds)
{
mng_uint32 iX;
mng_imagep pImage;
mng_uint32 iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DISC, MNG_LC_START)
#endif
if (iCount) /* specific list ? */
{
mng_uint16p pWork = pIds;
for (iX = 0; iX < iCount; iX++) /* iterate the list */
{
pImage = find_imageobject (pData, *pWork++);
if (pImage) /* found the object ? */
{ /* then drop it */
iRetcode = free_imageobject (pData, pImage);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
}
else /* empty: drop all un-frozen objects */
{
mng_imagep pNext = (mng_imagep)pData->pFirstimgobj;
while (pNext) /* any left ? */
{
pImage = pNext;
pNext = pImage->sHeader.pNext;
if (!pImage->bFrozen) /* not frozen ? */
{ /* then drop it */
iRetcode = free_imageobject (pData, pImage);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DISC, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_fram (mng_datap pData,
mng_uint8 iFramemode,
mng_uint8 iChangedelay,
mng_uint32 iDelay,
mng_uint8 iChangetimeout,
mng_uint32 iTimeout,
mng_uint8 iChangeclipping,
mng_uint8 iCliptype,
mng_int32 iClipl,
mng_int32 iClipr,
mng_int32 iClipt,
mng_int32 iClipb)
{
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_START)
#endif
/* advance a frame then */
iRetcode = next_frame (pData, iFramemode, iChangedelay, iDelay,
iChangetimeout, iTimeout, iChangeclipping,
iCliptype, iClipl, iClipr, iClipt, iClipb);
if (pData->bTimerset) /* timer break ? */
pData->iBreakpoint = 1;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_END)
#endif
return iRetcode;
}
/* ************************************************************************** */
mng_retcode process_display_fram2 (mng_datap pData)
{
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_START)
#endif
/* again; after the break */
iRetcode = next_frame (pData, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
pData->iBreakpoint = 0; /* not again! */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_END)
#endif
return iRetcode;
}
/* ************************************************************************** */
mng_retcode process_display_move (mng_datap pData,
mng_uint16 iFromid,
mng_uint16 iToid,
mng_uint8 iMovetype,
mng_int32 iMovex,
mng_int32 iMovey)
{
mng_uint16 iX;
mng_imagep pImage;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MOVE, MNG_LC_START)
#endif
/* iterate the list */
for (iX = iFromid; iX <= iToid; iX++)
{
if (!iX) /* object id=0 ? */
pImage = (mng_imagep)pData->pObjzero;
else
pImage = find_imageobject (pData, iX);
if (pImage) /* object exists ? */
{
switch (iMovetype)
{
case 0 : { /* absolute */
pImage->iPosx = iMovex;
pImage->iPosy = iMovey;
break;
}
case 1 : { /* relative */
pImage->iPosx = pImage->iPosx + iMovex;
pImage->iPosy = pImage->iPosy + iMovey;
break;
}
}
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MOVE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_clip (mng_datap pData,
mng_uint16 iFromid,
mng_uint16 iToid,
mng_uint8 iCliptype,
mng_int32 iClipl,
mng_int32 iClipr,
mng_int32 iClipt,
mng_int32 iClipb)
{
mng_uint16 iX;
mng_imagep pImage;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLIP, MNG_LC_START)
#endif
/* iterate the list */
for (iX = iFromid; iX <= iToid; iX++)
{
if (!iX) /* object id=0 ? */
pImage = (mng_imagep)pData->pObjzero;
else
pImage = find_imageobject (pData, iX);
if (pImage) /* object exists ? */
{
switch (iCliptype)
{
case 0 : { /* absolute */
pImage->bClipped = MNG_TRUE;
pImage->iClipl = iClipl;
pImage->iClipr = iClipr;
pImage->iClipt = iClipt;
pImage->iClipb = iClipb;
break;
}
case 1 : { /* relative */
pImage->bClipped = MNG_TRUE;
pImage->iClipl = pImage->iClipl + iClipl;
pImage->iClipr = pImage->iClipr + iClipr;
pImage->iClipt = pImage->iClipt + iClipt;
pImage->iClipb = pImage->iClipb + iClipb;
break;
}
}
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLIP, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_show (mng_datap pData)
{
mng_int16 iX, iS, iFrom, iTo;
mng_imagep pImage;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SHOW, MNG_LC_START)
#endif
/* TODO: optimization for the cases where "abs (iTo - iFrom)" is rather high;
especially where ((iFrom==1) && (iTo==65535)); eg. an empty SHOW !!! */
if (pData->iBreakpoint == 3) /* previously broken during cycle-mode ? */
{
pImage = find_imageobject (pData, pData->iSHOWnextid);
if (pImage) /* still there ? */
display_image (pData, pImage, MNG_FALSE);
pData->iBreakpoint = 0; /* let's not go through this again! */
}
else
{
if (pData->iBreakpoint) /* previously broken at other point ? */
{ /* restore last parms */
iFrom = (mng_int16)pData->iSHOWfromid;
iTo = (mng_int16)pData->iSHOWtoid;
iX = (mng_int16)pData->iSHOWnextid;
iS = (mng_int16)pData->iSHOWskip;
}
else
{ /* regular sequence ? */
if (pData->iSHOWtoid >= pData->iSHOWfromid)
iS = 1;
else /* reverse sequence ! */
iS = -1;
iFrom = (mng_int16)pData->iSHOWfromid;
iTo = (mng_int16)pData->iSHOWtoid;
iX = iFrom;
pData->iSHOWfromid = (mng_uint16)iFrom;
pData->iSHOWtoid = (mng_uint16)iTo;
pData->iSHOWskip = iS;
}
/* cycle mode ? */
if ((pData->iSHOWmode == 6) || (pData->iSHOWmode == 7))
{
mng_uint16 iTrigger = 0;
mng_uint16 iFound = 0;
mng_uint16 iPass = 0;
mng_imagep pFound = 0;
do
{
iPass++; /* lets prevent endless loops when there
are no potential candidates in the list! */
if (iS > 0) /* forward ? */
{
for (iX = iFrom; iX <= iTo; iX += iS)
{
pImage = find_imageobject (pData, (mng_uint16)iX);
if (pImage) /* object exists ? */
{
if (iFound) /* already found a candidate ? */
pImage->bVisible = MNG_FALSE;
else
if (iTrigger) /* found the trigger ? */
{
pImage->bVisible = MNG_TRUE;
iFound = iX;
pFound = pImage;
}
else
if (pImage->bVisible) /* ok, this is the trigger */
{
pImage->bVisible = MNG_FALSE;
iTrigger = iX;
}
}
}
}
else
{
for (iX = iFrom; iX >= iTo; iX += iS)
{
pImage = find_imageobject (pData, (mng_uint16)iX);
if (pImage) /* object exists ? */
{
if (iFound) /* already found a candidate ? */
pImage->bVisible = MNG_FALSE;
else
if (iTrigger) /* found the trigger ? */
{
pImage->bVisible = MNG_TRUE;
iFound = iX;
pFound = pImage;
}
else
if (pImage->bVisible) /* ok, this is the trigger */
{
pImage->bVisible = MNG_FALSE;
iTrigger = iX;
}
}
}
}
if (!iTrigger) /* did not find a trigger ? */
iTrigger = 1; /* then fake it so the first image
gets nominated */
} /* cycle back to beginning ? */
while ((iPass < 2) && (iTrigger) && (!iFound));
pData->iBreakpoint = 0; /* just a sanity precaution */
/* display it ? */
if ((pData->iSHOWmode == 6) && (pFound))
{
display_image (pData, pFound, MNG_FALSE);
if (pData->bTimerset) /* timer set ? */
{
pData->iBreakpoint = 3;
pData->iSHOWnextid = iFound; /* save it for after the break */
}
}
}
else
{
do
{
pImage = find_imageobject (pData, iX);
if (pImage) /* object exists ? */
{
if (pData->iBreakpoint) /* did we get broken last time ? */
{ /* could only happen in the display routine */
display_image (pData, pImage, MNG_FALSE);
pData->iBreakpoint = 0; /* only once inside this loop please ! */
}
else
{
switch (pData->iSHOWmode) /* do what ? */
{
case 0 : {
pImage->bVisible = MNG_TRUE;
display_image (pData, pImage, MNG_FALSE);
break;
}
case 1 : {
pImage->bVisible = MNG_FALSE;
break;
}
case 2 : {
if (pImage->bVisible)
display_image (pData, pImage, MNG_FALSE);
break;
}
case 3 : {
pImage->bVisible = MNG_TRUE;
break;
}
case 4 : {
pImage->bVisible = (mng_bool)(!pImage->bVisible);
if (pImage->bVisible)
display_image (pData, pImage, MNG_FALSE);
break;
}
case 5 : {
pImage->bVisible = (mng_bool)(!pImage->bVisible);
}
}
}
}
if (!pData->bTimerset) /* next ? */
iX += iS;
} /* continue ? */
while ((!pData->bTimerset) && (((iS > 0) && (iX <= iTo)) ||
((iS < 0) && (iX >= iTo)) ));
if (pData->bTimerset) /* timer set ? */
{
pData->iBreakpoint = 4;
pData->iSHOWnextid = iX; /* save for next time */
}
else
pData->iBreakpoint = 0;
}
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SHOW, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_save (mng_datap pData)
{
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SAVE, MNG_LC_START)
#endif
iRetcode = save_state (pData); /* save the current state */
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SAVE, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_seek (mng_datap pData)
{
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SEEK, MNG_LC_START)
#endif
iRetcode = restore_state (pData); /* restore the initial or SAVE state */
if (iRetcode) /* on error bail out */
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SEEK, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
#ifdef MNG_INCLUDE_JNG
mng_retcode process_display_jhdr (mng_datap pData)
{ /* address the current "object" if any */
mng_imagep pImage = (mng_imagep)pData->pCurrentobj;
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JHDR, MNG_LC_START)
#endif
if (!pData->bHasDHDR)
{
pData->fInitrowproc = MNG_NULL; /* do nothing by default */
pData->fDisplayrow = MNG_NULL;
pData->fCorrectrow = MNG_NULL;
pData->fStorerow = MNG_NULL;
pData->fProcessrow = MNG_NULL;
pData->fDifferrow = MNG_NULL;
pData->fStorerow2 = MNG_NULL;
pData->fStorerow3 = MNG_NULL;
pData->pStoreobj = MNG_NULL; /* initialize important work-parms */
pData->iJPEGrow = 0;
pData->iJPEGalpharow = 0;
pData->iJPEGrgbrow = 0;
pData->iRowmax = 0; /* so init_rowproc does the right thing ! */
}
if (!pData->iBreakpoint) /* not previously broken ? */
{
if (pData->bHasDHDR) /* delta-image ? */
{
if (pData->iDeltatype == MNG_DELTATYPE_REPLACE)
{
iRetcode = reset_object_details (pData, (mng_imagep)pData->pDeltaImage,
pData->iDatawidth, pData->iDataheight,
pData->iJHDRimgbitdepth, pData->iJHDRcolortype,
pData->iJHDRalphacompression, pData->iJHDRalphafilter,
pData->iJHDRalphainterlace, MNG_TRUE);
((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphabitdepth = pData->iJHDRalphabitdepth;
((mng_imagep)pData->pDeltaImage)->pImgbuf->iJHDRcompression = pData->iJHDRimgcompression;
((mng_imagep)pData->pDeltaImage)->pImgbuf->iJHDRinterlace = pData->iJHDRimginterlace;
((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth;
}
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) )
{
((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iJHDRimgbitdepth;
((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth;
}
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) )
((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth;
else
if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) ||
(pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) )
((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iJHDRimgbitdepth;
}
else
{
if (pImage) /* update object buffer ? */
{
iRetcode = reset_object_details (pData, pImage,
pData->iDatawidth, pData->iDataheight,
pData->iJHDRimgbitdepth, pData->iJHDRcolortype,
pData->iJHDRalphacompression, pData->iJHDRalphafilter,
pData->iJHDRalphainterlace, MNG_TRUE);
pImage->pImgbuf->iAlphabitdepth = pData->iJHDRalphabitdepth;
pImage->pImgbuf->iJHDRcompression = pData->iJHDRimgcompression;
pImage->pImgbuf->iJHDRinterlace = pData->iJHDRimginterlace;
pImage->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth;
}
else /* update object 0 */
{
iRetcode = reset_object_details (pData, (mng_imagep)pData->pObjzero,
pData->iDatawidth, pData->iDataheight,
pData->iJHDRimgbitdepth, pData->iJHDRcolortype,
pData->iJHDRalphacompression, pData->iJHDRalphafilter,
pData->iJHDRalphainterlace, MNG_TRUE);
((mng_imagep)pData->pObjzero)->pImgbuf->iAlphabitdepth = pData->iJHDRalphabitdepth;
((mng_imagep)pData->pObjzero)->pImgbuf->iJHDRcompression = pData->iJHDRimgcompression;
((mng_imagep)pData->pObjzero)->pImgbuf->iJHDRinterlace = pData->iJHDRimginterlace;
((mng_imagep)pData->pObjzero)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth;
}
}
if (iRetcode) /* on error bail out */
return iRetcode;
}
if (!pData->bHasDHDR)
{ /* we're always storing a JPEG */
if (pImage) /* real object ? */
pData->pStoreobj = pImage; /* tell the row routines */
else /* otherwise use object 0 */
pData->pStoreobj = pData->pObjzero;
/* display "on-the-fly" ? */
if ( (((mng_imagep)pData->pStoreobj)->iMAGN_MethodX == 0) &&
(((mng_imagep)pData->pStoreobj)->iMAGN_MethodY == 0) &&
( (pData->eImagetype == mng_it_jng ) ||
(((mng_imagep)pData->pStoreobj)->bVisible) ) )
{
next_layer (pData); /* that's a new layer then ! */
if (pData->bTimerset) /* timer break ? */
pData->iBreakpoint = 7;
else
{
pData->iBreakpoint = 0;
/* anything to display ? */
if ((pData->iDestr > pData->iDestl) && (pData->iDestb > pData->iDestt))
{
set_display_routine (pData); /* then determine display routine */
/* display from the object we store in */
pData->pRetrieveobj = pData->pStoreobj;
}
}
}
}
if (!pData->bTimerset) /* no timer break ? */
{ /* default row initialization ! */
pData->fInitrowproc = (mng_fptr)init_rowproc;
if ((!pData->bHasDHDR) || (pData->iDeltatype == MNG_DELTATYPE_REPLACE))
{ /* 8-bit JPEG ? */
if (pData->iJHDRimgbitdepth == 8)
{ /* intermediate row is 8-bit deep */
pData->bIsRGBA16 = MNG_FALSE;
pData->iRowsamples = pData->iDatawidth;
switch (pData->iJHDRcolortype) /* determine pixel processing routines */
{
case MNG_COLORTYPE_JPEGGRAY :
{
pData->fStorerow2 = (mng_fptr)store_jpeg_g8;
pData->fRetrieverow = (mng_fptr)retrieve_g8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case MNG_COLORTYPE_JPEGCOLOR :
{
pData->fStorerow2 = (mng_fptr)store_jpeg_rgb8;
pData->fRetrieverow = (mng_fptr)retrieve_rgb8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case MNG_COLORTYPE_JPEGGRAYA :
{
pData->fStorerow2 = (mng_fptr)store_jpeg_ga8;
pData->fRetrieverow = (mng_fptr)retrieve_ga8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case MNG_COLORTYPE_JPEGCOLORA :
{
pData->fStorerow2 = (mng_fptr)store_jpeg_rgba8;
pData->fRetrieverow = (mng_fptr)retrieve_rgba8;
pData->bIsOpaque = MNG_FALSE;
break;
}
}
}
else
{
pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */
/* TODO: 12-bit JPEG */
/* TODO: 8- + 12-bit JPEG (eg. type=20) */
}
/* possible IDAT alpha-channel ? */
if (pData->iJHDRalphacompression == MNG_COMPRESSION_DEFLATE)
{
/* determine alpha processing routine */
switch (pData->iJHDRalphabitdepth)
{
case 1 : { pData->fInitrowproc = (mng_fptr)init_jpeg_a1_ni; break; }
case 2 : { pData->fInitrowproc = (mng_fptr)init_jpeg_a2_ni; break; }
case 4 : { pData->fInitrowproc = (mng_fptr)init_jpeg_a4_ni; break; }
case 8 : { pData->fInitrowproc = (mng_fptr)init_jpeg_a8_ni; break; }
case 16 : { pData->fInitrowproc = (mng_fptr)init_jpeg_a16_ni; break; }
}
}
else /* possible JDAA alpha-channel ? */
if (pData->iJHDRalphacompression == MNG_COMPRESSION_BASELINEJPEG)
{ /* 8-bit JPEG ? */
if (pData->iJHDRimgbitdepth == 8)
{
if (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA)
pData->fStorerow3 = (mng_fptr)store_jpeg_g8_alpha;
else
if (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA)
pData->fStorerow3 = (mng_fptr)store_jpeg_rgb8_alpha;
}
else
{
/* TODO: 12-bit JPEG with 8-bit JDAA */
}
}
/* initialize JPEG library */
iRetcode = mngjpeg_initialize (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
}
else
{ /* must be alpha add/replace !! */
if ((pData->iDeltatype != MNG_DELTATYPE_BLOCKALPHAADD ) &&
(pData->iDeltatype != MNG_DELTATYPE_BLOCKALPHAREPLACE) )
MNG_ERROR (pData, MNG_INVDELTATYPE)
/* determine alpha processing routine */
switch (pData->iJHDRalphabitdepth)
{
case 1 : { pData->fInitrowproc = (mng_fptr)init_g1_ni; break; }
case 2 : { pData->fInitrowproc = (mng_fptr)init_g2_ni; break; }
case 4 : { pData->fInitrowproc = (mng_fptr)init_g4_ni; break; }
case 8 : { pData->fInitrowproc = (mng_fptr)init_g8_ni; break; }
case 16 : { pData->fInitrowproc = (mng_fptr)init_g16_ni; break; }
}
}
pData->iFilterofs = 0; /* determine filter characteristics */
pData->iLevel0 = 0; /* default levels */
pData->iLevel1 = 0;
pData->iLevel2 = 0;
pData->iLevel3 = 0;
/* leveling & differing ? */
/* if (pData->iJHDRalphafilter & 0x40)
{
if (pData->iJHDRalphabitdepth <= 8)
pData->iFilterofs = 1;
else
pData->iFilterofs = 2;
} */
/* no adaptive filtering ? */
/* if (pData->iJHDRalphafilter & 0x01)
pData->iPixelofs = pData->iFilterofs;
else */
pData->iPixelofs = pData->iFilterofs + 1;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JHDR, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_INCLUDE_JNG */
/* ************************************************************************** */
#ifdef MNG_INCLUDE_JNG
mng_retcode process_display_jdaa (mng_datap pData,
mng_uint32 iRawlen,
mng_uint8p pRawdata)
{
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAA, MNG_LC_START)
#endif
if (!pData->bJPEGdecompress2) /* if we're not decompressing already */
{
if (pData->fInitrowproc) /* initialize row-processing? */
{
iRetcode = ((mng_initrowproc)pData->fInitrowproc) (pData);
pData->fInitrowproc = MNG_NULL; /* only call this once !!! */
}
if (!iRetcode) /* initialize decompress */
iRetcode = mngjpeg_decompressinit2 (pData);
}
if (!iRetcode) /* all ok? then decompress, my man */
iRetcode = mngjpeg_decompressdata2 (pData, iRawlen, pRawdata);
if (iRetcode)
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAA, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_INCLUDE_JNG */
/* ************************************************************************** */
#ifdef MNG_INCLUDE_JNG
mng_retcode process_display_jdat (mng_datap pData,
mng_uint32 iRawlen,
mng_uint8p pRawdata)
{
mng_retcode iRetcode = MNG_NOERROR;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAT, MNG_LC_START)
#endif
if (pData->bRestorebkgd) /* need to restore the background ? */
{
pData->bRestorebkgd = MNG_FALSE;
iRetcode = load_bkgdlayer (pData);
if ((pData->bDisplaying) && (pData->bRunning))
pData->iLayerseq++; /* and it counts as a layer then ! */
if (iRetcode) /* on error bail out */
return iRetcode;
}
if (!pData->bJPEGdecompress) /* if we're not decompressing already */
{
if (pData->fInitrowproc) /* initialize row-processing? */
{
iRetcode = ((mng_initrowproc)pData->fInitrowproc) (pData);
pData->fInitrowproc = MNG_NULL; /* only call this once !!! */
}
if (!iRetcode) /* initialize decompress */
iRetcode = mngjpeg_decompressinit (pData);
}
if (!iRetcode) /* all ok? then decompress, my man */
iRetcode = mngjpeg_decompressdata (pData, iRawlen, pRawdata);
if (iRetcode)
return iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAT, MNG_LC_END)
#endif
return MNG_NOERROR;
}
#endif /* MNG_INCLUDE_JNG */
/* ************************************************************************** */
mng_retcode process_display_dhdr (mng_datap pData,
mng_uint16 iObjectid,
mng_uint8 iImagetype,
mng_uint8 iDeltatype,
mng_uint32 iBlockwidth,
mng_uint32 iBlockheight,
mng_uint32 iBlockx,
mng_uint32 iBlocky)
{
mng_imagep pImage;
mng_retcode iRetcode;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DHDR, MNG_LC_START)
#endif
pData->fInitrowproc = MNG_NULL; /* do nothing by default */
pData->fDisplayrow = MNG_NULL;
pData->fCorrectrow = MNG_NULL;
pData->fStorerow = MNG_NULL;
pData->fProcessrow = MNG_NULL;
pData->pStoreobj = MNG_NULL;
pData->fDeltagetrow = MNG_NULL;
pData->fDeltaaddrow = MNG_NULL;
pData->fDeltareplacerow = MNG_NULL;
pData->fDeltaputrow = MNG_NULL;
pImage = find_imageobject (pData, iObjectid);
if (pImage) /* object exists ? */
{
if (pImage->pImgbuf->bConcrete) /* is it concrete ? */
{ /* previous magnification to be done ? */
if ((pImage->iMAGN_MethodX) || (pImage->iMAGN_MethodY))
{
iRetcode = magnify_imageobject (pData, pImage);
if (iRetcode) /* on error bail out */
return iRetcode;
}
/* save delta fields */
pData->pDeltaImage = (mng_ptr)pImage;
pData->iDeltaImagetype = iImagetype;
pData->iDeltatype = iDeltatype;
pData->iDeltaBlockwidth = iBlockwidth;
pData->iDeltaBlockheight = iBlockheight;
pData->iDeltaBlockx = iBlockx;
pData->iDeltaBlocky = iBlocky;
/* restore target-object fields */
pData->iDatawidth = pImage->pImgbuf->iWidth;
pData->iDataheight = pImage->pImgbuf->iHeight;
pData->iBitdepth = pImage->pImgbuf->iBitdepth;
pData->iColortype = pImage->pImgbuf->iColortype;
pData->iCompression = pImage->pImgbuf->iCompression;
pData->iFilter = pImage->pImgbuf->iFilter;
pData->iInterlace = pImage->pImgbuf->iInterlace;
#ifdef MNG_INCLUDE_JNG
pData->iJHDRimgbitdepth = pImage->pImgbuf->iBitdepth;
pData->iJHDRcolortype = pImage->pImgbuf->iColortype;
pData->iJHDRimgcompression = pImage->pImgbuf->iJHDRcompression;
pData->iJHDRimginterlace = pImage->pImgbuf->iJHDRinterlace;
pData->iJHDRalphacompression = pImage->pImgbuf->iCompression;
pData->iJHDRalphafilter = pImage->pImgbuf->iFilter;
pData->iJHDRalphainterlace = pImage->pImgbuf->iInterlace;
pData->iJHDRalphabitdepth = pImage->pImgbuf->iAlphabitdepth;
#endif
/* block size specified ? */
if (iDeltatype != MNG_DELTATYPE_NOCHANGE)
{
pData->iDatawidth = iBlockwidth;
pData->iDataheight = iBlockheight;
}
switch (iDeltatype) /* determine nr of delta-channels */
{
case MNG_DELTATYPE_BLOCKALPHAADD : ;
case MNG_DELTATYPE_BLOCKALPHAREPLACE :
{
#ifdef MNG_INCLUDE_JNG
if ((pData->iColortype == MNG_COLORTYPE_GRAYA ) ||
(pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA) )
{
pData->iColortype = MNG_COLORTYPE_GRAY;
pData->iJHDRcolortype = MNG_COLORTYPE_JPEGGRAY;
}
else
if ((pData->iColortype == MNG_COLORTYPE_RGBA ) ||
(pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) )
{
pData->iColortype = MNG_COLORTYPE_GRAY;
pData->iJHDRcolortype = MNG_COLORTYPE_JPEGGRAY;
}
#else
if (pData->iColortype == MNG_COLORTYPE_GRAYA)
pData->iColortype = MNG_COLORTYPE_GRAY;
else
if (pData->iColortype == MNG_COLORTYPE_RGBA)
pData->iColortype = MNG_COLORTYPE_GRAY;
#endif
else /* target has no alpha; that sucks! */
MNG_ERROR (pData, MNG_TARGETNOALPHA)
break;
}
case MNG_DELTATYPE_BLOCKCOLORADD : ;
case MNG_DELTATYPE_BLOCKCOLORREPLACE :
{
#ifdef MNG_INCLUDE_JNG
if ((pData->iColortype == MNG_COLORTYPE_GRAYA ) ||
(pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA) )
{
pData->iColortype = MNG_COLORTYPE_GRAY;
pData->iJHDRcolortype = MNG_COLORTYPE_JPEGGRAY;
}
else
if ((pData->iColortype == MNG_COLORTYPE_RGBA ) ||
(pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) )
{
pData->iColortype = MNG_COLORTYPE_RGB;
pData->iJHDRcolortype = MNG_COLORTYPE_JPEGCOLOR;
}
#else
if (pData->iColortype == MNG_COLORTYPE_GRAYA)
pData->iColortype = MNG_COLORTYPE_GRAY;
else
if (pData->iColortype == MNG_COLORTYPE_RGBA)
pData->iColortype = MNG_COLORTYPE_RGB;
#endif
else /* target has no alpha; that sucks! */
MNG_ERROR (pData, MNG_TARGETNOALPHA)
break;
}
}
/* full image replace ? */
if (iDeltatype == MNG_DELTATYPE_REPLACE)
{
iRetcode = reset_object_details (pData, pImage,
pData->iDatawidth, pData->iDataheight,
pData->iBitdepth, pData->iColortype,
pData->iCompression, pData->iFilter,
pData->iInterlace, MNG_FALSE);
if (iRetcode) /* on error bail out */
return iRetcode;
pData->pStoreobj = pImage; /* and store straight into this object */
}
else
{
mng_imagedatap pBufzero, pBuf;
/* we store in object 0 and process it later */
pData->pStoreobj = pData->pObjzero;
/* make sure to initialize object 0 then */
iRetcode = reset_object_details (pData, (mng_imagep)pData->pObjzero,
pData->iDatawidth, pData->iDataheight,
pData->iBitdepth, pData->iColortype,
pData->iCompression, pData->iFilter,
pData->iInterlace, MNG_TRUE);
if (iRetcode) /* on error bail out */
return iRetcode;
pBuf = pImage->pImgbuf; /* copy possible palette & cheap transparency */
pBufzero = ((mng_imagep)pData->pObjzero)->pImgbuf;
pBufzero->bHasPLTE = pBuf->bHasPLTE;
pBufzero->bHasTRNS = pBuf->bHasTRNS;
if (pBufzero->bHasPLTE) /* copy palette ? */
{
mng_uint32 iX;
pBufzero->iPLTEcount = pBuf->iPLTEcount;
for (iX = 0; iX < pBuf->iPLTEcount; iX++)
{
pBufzero->aPLTEentries [iX].iRed = pBuf->aPLTEentries [iX].iRed;
pBufzero->aPLTEentries [iX].iGreen = pBuf->aPLTEentries [iX].iGreen;
pBufzero->aPLTEentries [iX].iBlue = pBuf->aPLTEentries [iX].iBlue;
}
}
if (pBufzero->bHasTRNS) /* copy cheap transparency ? */
{
pBufzero->iTRNSgray = pBuf->iTRNSgray;
pBufzero->iTRNSred = pBuf->iTRNSred;
pBufzero->iTRNSgreen = pBuf->iTRNSgreen;
pBufzero->iTRNSblue = pBuf->iTRNSblue;
pBufzero->iTRNScount = pBuf->iTRNScount;
MNG_COPY (pBufzero->aTRNSentries, pBuf->aTRNSentries,
sizeof (pBufzero->aTRNSentries))
}
/* process immediatly if bitdepth & colortype are equal */
pData->bDeltaimmediate =
(mng_bool)((pData->bDisplaying) && (pData->bRunning) &&
(pData->iBitdepth == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iBitdepth ) &&
(pData->iColortype == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iColortype) );
}
switch (pData->iColortype) /* determine row initialization routine */
{
case 0 : { /* gray */
switch (pData->iBitdepth)
{
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g1_ni;
else
pData->fInitrowproc = (mng_fptr)init_g1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g2_ni;
else
pData->fInitrowproc = (mng_fptr)init_g2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g4_ni;
else
pData->fInitrowproc = (mng_fptr)init_g4_i;
break;
}
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g8_ni;
else
pData->fInitrowproc = (mng_fptr)init_g8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_g16_ni;
else
pData->fInitrowproc = (mng_fptr)init_g16_i;
break;
}
}
break;
}
case 2 : { /* rgb */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgb8_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgb8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgb16_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgb16_i;
break;
}
}
break;
}
case 3 : { /* indexed */
switch (pData->iBitdepth)
{
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx1_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx2_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx4_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx4_i;
break;
}
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_idx8_ni;
else
pData->fInitrowproc = (mng_fptr)init_idx8_i;
break;
}
}
break;
}
case 4 : { /* gray+alpha */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_ga8_ni;
else
pData->fInitrowproc = (mng_fptr)init_ga8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_ga16_ni;
else
pData->fInitrowproc = (mng_fptr)init_ga16_i;
break;
}
}
break;
}
case 6 : { /* rgb+alpha */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgba8_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgba8_i;
break;
}
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)init_rgba16_ni;
else
pData->fInitrowproc = (mng_fptr)init_rgba16_i;
break;
}
}
break;
}
}
}
else
MNG_ERROR (pData, MNG_OBJNOTCONCRETE)
}
else
MNG_ERROR (pData, MNG_OBJECTUNKNOWN)
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DHDR, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_prom (mng_datap pData,
mng_uint8 iBitdepth,
mng_uint8 iColortype,
mng_uint8 iFilltype)
{
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PROM, MNG_LC_START)
#endif
/* TODO: everything */
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PROM, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_ipng (mng_datap pData)
{
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IPNG, MNG_LC_START)
#endif
/* indicate it for what it is now */
pData->iDeltaImagetype = MNG_IMAGETYPE_PNG;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IPNG, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_ijng (mng_datap pData)
{
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IJNG, MNG_LC_START)
#endif
/* indicate it for what it is now */
pData->iDeltaImagetype = MNG_IMAGETYPE_JNG;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IJNG, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_pplt (mng_datap pData,
mng_uint8 iType,
mng_uint32 iCount,
mng_palette8ep paIndexentries,
mng_uint8p paAlphaentries,
mng_uint8p paUsedentries)
{
mng_uint32 iX;
mng_imagep pImage = (mng_imagep)pData->pObjzero;
mng_imagedatap pBuf = pImage->pImgbuf;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PPLT, MNG_LC_START)
#endif
switch (iType)
{
case MNG_DELTATYPE_REPLACERGB :
{
for (iX = 0; iX < iCount; iX++)
{
if (paUsedentries [iX])
{
pBuf->aPLTEentries [iX].iRed = paIndexentries [iX].iRed;
pBuf->aPLTEentries [iX].iGreen = paIndexentries [iX].iGreen;
pBuf->aPLTEentries [iX].iBlue = paIndexentries [iX].iBlue;
}
}
break;
}
case MNG_DELTATYPE_DELTARGB :
{
for (iX = 0; iX < iCount; iX++)
{
if (paUsedentries [iX])
{
pBuf->aPLTEentries [iX].iRed =
(mng_uint8)(pBuf->aPLTEentries [iX].iRed +
paIndexentries [iX].iRed );
pBuf->aPLTEentries [iX].iGreen =
(mng_uint8)(pBuf->aPLTEentries [iX].iGreen +
paIndexentries [iX].iGreen);
pBuf->aPLTEentries [iX].iBlue =
(mng_uint8)(pBuf->aPLTEentries [iX].iBlue +
paIndexentries [iX].iBlue );
}
}
break;
}
case MNG_DELTATYPE_REPLACEALPHA :
{
for (iX = 0; iX < iCount; iX++)
{
if (paUsedentries [iX])
pBuf->aTRNSentries [iX] = paAlphaentries [iX];
}
break;
}
case MNG_DELTATYPE_DELTAALPHA :
{
for (iX = 0; iX < iCount; iX++)
{
if (paUsedentries [iX])
pBuf->aTRNSentries [iX] =
(mng_uint8)(pBuf->aTRNSentries [iX] +
paAlphaentries [iX]);
}
break;
}
case MNG_DELTATYPE_REPLACERGBA :
{
for (iX = 0; iX < iCount; iX++)
{
if (paUsedentries [iX])
{
pBuf->aPLTEentries [iX].iRed = paIndexentries [iX].iRed;
pBuf->aPLTEentries [iX].iGreen = paIndexentries [iX].iGreen;
pBuf->aPLTEentries [iX].iBlue = paIndexentries [iX].iBlue;
pBuf->aTRNSentries [iX] = paAlphaentries [iX];
}
}
break;
}
case MNG_DELTATYPE_DELTARGBA :
{
for (iX = 0; iX < iCount; iX++)
{
if (paUsedentries [iX])
{
pBuf->aPLTEentries [iX].iRed =
(mng_uint8)(pBuf->aPLTEentries [iX].iRed +
paIndexentries [iX].iRed );
pBuf->aPLTEentries [iX].iGreen =
(mng_uint8)(pBuf->aPLTEentries [iX].iGreen +
paIndexentries [iX].iGreen);
pBuf->aPLTEentries [iX].iBlue =
(mng_uint8)(pBuf->aPLTEentries [iX].iBlue +
paIndexentries [iX].iBlue );
pBuf->aTRNSentries [iX] =
(mng_uint8)(pBuf->aTRNSentries [iX] +
paAlphaentries [iX]);
}
}
break;
}
}
if ((iType != MNG_DELTATYPE_REPLACERGB) && (iType != MNG_DELTATYPE_DELTARGB))
{
if (pBuf->bHasTRNS)
{
if (iCount > pBuf->iTRNScount)
pBuf->iTRNScount = iCount;
}
else
{
pBuf->iTRNScount = iCount;
pBuf->bHasTRNS = MNG_TRUE;
}
}
if ((iType != MNG_DELTATYPE_REPLACEALPHA) && (iType != MNG_DELTATYPE_DELTAALPHA))
{
if (iCount > pBuf->iPLTEcount)
pBuf->iPLTEcount = iCount;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PPLT, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_magn (mng_datap pData,
mng_uint16 iFirstid,
mng_uint16 iLastid,
mng_uint16 iMethodX,
mng_uint16 iMX,
mng_uint16 iMY,
mng_uint16 iML,
mng_uint16 iMR,
mng_uint16 iMT,
mng_uint16 iMB,
mng_uint16 iMethodY)
{
mng_uint16 iX;
mng_imagep pImage;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_START)
#endif
/* iterate the object-ids */
for (iX = iFirstid; iX <= iLastid; iX++)
{
if (iX == 0) /* process object 0 ? */
{
pImage = (mng_imagep)pData->pObjzero;
pImage->iMAGN_MethodX = iMethodX;
pImage->iMAGN_MethodY = iMethodY;
pImage->iMAGN_MX = iMX;
pImage->iMAGN_MY = iMY;
pImage->iMAGN_ML = iML;
pImage->iMAGN_MR = iMR;
pImage->iMAGN_MT = iMT;
pImage->iMAGN_MB = iMB;
}
else
{
pImage = find_imageobject (pData, iX);
/* object exists & is not frozen ? */
if ((pImage) && (!pImage->bFrozen))
{ /* previous magnification to be done ? */
if ((pImage->iMAGN_MethodX) || (pImage->iMAGN_MethodY))
{
mng_retcode iRetcode = magnify_imageobject (pData, pImage);
if (iRetcode) /* on error bail out */
return iRetcode;
}
pImage->iMAGN_MethodX = iMethodX;
pImage->iMAGN_MethodY = iMethodY;
pImage->iMAGN_MX = iMX;
pImage->iMAGN_MY = iMY;
pImage->iMAGN_ML = iML;
pImage->iMAGN_MR = iMR;
pImage->iMAGN_MT = iMT;
pImage->iMAGN_MB = iMB;
}
}
}
iX = iFirstid;
/* iterate again for showing */
while ((iX <= iLastid) && (!pData->bTimerset))
{
if (iX) /* only real objects ! */
{
pImage = find_imageobject (pData, iX);
/* object exists & is not frozen &
is visible & is viewable ? */
if ((pImage) && (!pImage->bFrozen) &&
(pImage->bVisible) && (pImage->bViewable))
display_image (pData, pImage, MNG_FALSE);
}
iX++;
}
if (pData->bTimerset) /* broken ? */
{
pData->iMAGNfromid = iFirstid;
pData->iMAGNtoid = iLastid;
pData->iBreakpoint = 9;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
mng_retcode process_display_magn2 (mng_datap pData)
{
mng_uint16 iX;
mng_imagep pImage;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_START)
#endif
iX = pData->iMAGNfromid;
/* iterate again for showing */
while ((iX <= pData->iMAGNtoid) && (!pData->bTimerset))
{
if (iX) /* only real objects ! */
{
pImage = find_imageobject (pData, iX);
/* object exists & is not frozen &
is visible & is viewable ? */
if ((pImage) && (!pImage->bFrozen) &&
(pImage->bVisible) && (pImage->bViewable))
display_image (pData, pImage, MNG_FALSE);
}
iX++;
}
if (pData->bTimerset) /* broken ? */
pData->iBreakpoint = 9;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_END)
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
#endif /* MNG_INCLUDE_DISPLAY_PROCS */
/* ************************************************************************** */
/* * end of file * */
/* ************************************************************************** */
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