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third-party-mirror / free_image / 5a70d84b632ba789e45487cc97153bb15da5fe54 / . / files / Source / LibMNG / libmng_display.c
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/* ************************************************************************** */
/* * For conditions of distribution and use, * */
/* * see copyright notice in libmng.h * */
/* ************************************************************************** */
/* * * */
/* * project : libmng * */
/* * file : libmng_display.c copyright (c) 2000-2007 G.Juyn * */
/* * version : 1.0.10 * */
/* * * */
/* * purpose : Display management (implementation) * */
/* * * */
/* * author : G.Juyn * */
/* * * */
/* * 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 separate 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!) * */
/* * * */
/* * 1.0.5 - 08/15/2002 - G.Juyn * */
/* * - completed PROM support * */
/* * - completed delta-image support * */
/* * 1.0.5 - 08/19/2002 - G.Juyn * */
/* * - B597134 - libmng pollutes the linker namespace * */
/* * 1.0.5 - 09/13/2002 - G.Juyn * */
/* * - fixed read/write of MAGN chunk * */
/* * 1.0.5 - 09/15/2002 - G.Juyn * */
/* * - fixed LOOP iteration=0 special case * */
/* * 1.0.5 - 09/19/2002 - G.Juyn * */
/* * - fixed color-correction for restore-background handling * */
/* * - optimized restore-background for bKGD cases * */
/* * - cleaned up some old stuff * */
/* * 1.0.5 - 09/20/2002 - G.Juyn * */
/* * - finished support for BACK image & tiling * */
/* * - added support for PAST * */
/* * 1.0.5 - 09/22/2002 - G.Juyn * */
/* * - added bgrx8 canvas (filler byte) * */
/* * 1.0.5 - 10/05/2002 - G.Juyn * */
/* * - fixed dropping mix of frozen/unfrozen objects * */
/* * 1.0.5 - 10/07/2002 - G.Juyn * */
/* * - added proposed change in handling of TERM- & if-delay * */
/* * - added another fix for misplaced TERM chunk * */
/* * - completed support for condition=2 in TERM chunk * */
/* * 1.0.5 - 10/18/2002 - G.Juyn * */
/* * - fixed clipping-problem with BACK tiling (Thanks Sakura!) * */
/* * 1.0.5 - 10/20/2002 - G.Juyn * */
/* * - fixed processing for multiple objects in MAGN * */
/* * - fixed display of visible target of PAST operation * */
/* * 1.0.5 - 10/30/2002 - G.Juyn * */
/* * - modified TERM/MEND processing for max(1, TERM_delay, * */
/* * interframe_delay) * */
/* * 1.0.5 - 11/04/2002 - G.Juyn * */
/* * - fixed layer- & frame-counting during read() * */
/* * - fixed goframe/golayer/gotime processing * */
/* * 1.0.5 - 01/19/2003 - G.Juyn * */
/* * - B654627 - fixed SEGV when no gettickcount callback * */
/* * - B664383 - fixed typo * */
/* * - finalized changes in TERM/final_delay to elected proposal* */
/* * * */
/* * 1.0.6 - 05/11/2003 - G. Juyn * */
/* * - added conditionals around canvas update routines * */
/* * 1.0.6 - 05/25/2003 - G.R-P * */
/* * - added MNG_SKIPCHUNK_cHNK footprint optimizations * */
/* * 1.0.6 - 07/07/2003 - G.R-P * */
/* * - added conditionals around some JNG-supporting code * */
/* * - added conditionals around 16-bit supporting code * */
/* * - reversed some loops to use decrementing counter * */
/* * - combined init functions into one function * */
/* * 1.0.6 - 07/10/2003 - G.R-P * */
/* * - replaced nested switches with simple init setup function * */
/* * 1.0.6 - 07/29/2003 - G.R-P * */
/* * - added conditionals around PAST chunk support * */
/* * 1.0.6 - 08/17/2003 - G.R-P * */
/* * - added conditionals around non-VLC chunk support * */
/* * * */
/* * 1.0.7 - 11/27/2003 - R.A * */
/* * - added CANVAS_RGB565 and CANVAS_BGR565 * */
/* * 1.0.7 - 12/06/2003 - R.A * */
/* * - added CANVAS_RGBA565 and CANVAS_BGRA565 * */
/* * 1.0.7 - 01/25/2004 - J.S * */
/* * - added premultiplied alpha canvas' for RGBA, ARGB, ABGR * */
/* * * */
/* * 1.0.8 - 03/31/2004 - G.Juyn * */
/* * - fixed problem with PAST usage where source > dest * */
/* * 1.0.8 - 05/04/2004 - G.R-P. * */
/* * - fixed misplaced 16-bit conditionals * */
/* * * */
/* * 1.0.9 - 09/18/2004 - G.R-P. * */
/* * - revised some SKIPCHUNK conditionals * */
/* * 1.0.9 - 10/10/2004 - G.R-P. * */
/* * - added MNG_NO_1_2_4BIT_SUPPORT * */
/* * 1.0.9 - 10/14/2004 - G.Juyn * */
/* * - added bgr565_a8 canvas-style (thanks to J. Elvander) * */
/* * 1.0.9 - 12/11/2004 - G.Juyn * */
/* * - added conditional MNG_OPTIMIZE_DISPLAYCALLS * */
/* * 1.0.9 - 12/20/2004 - G.Juyn * */
/* * - cleaned up macro-invocations (thanks to D. Airlie) * */
/* * * */
/* * 1.0.10 - 07/06/2005 - G.R-P. * */
/* * - added more SKIPCHUNK conditionals * */
/* * 1.0.10 - 12/28/2005 - G.R-P. * */
/* * - added missing SKIPCHUNK_MAGN conditional * */
/* * 1.0.10 - 03/07/2006 - (thanks to W. Manthey) * */
/* * - added CANVAS_RGB555 and CANVAS_BGR555 * */
/* * 1.0.10 - 04/08/2007 - G.Juyn * */
/* * - fixed several compiler warnings * */
/* * 1.0.10 - 04/08/2007 - G.Juyn * */
/* * - added support for mPNG proposal * */
/* * 1.0.10 - 04/12/2007 - G.Juyn * */
/* * - added support for ANG proposal * */
/* * * */
/* ************************************************************************** */
#include "libmng.h"
#include "libmng_data.h"
#include "libmng_error.h"
#include "libmng_trace.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "libmng_chunks.h"
#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_LOCAL mng_retcode set_delay (mng_datap pData,
mng_uint32 iInterval)
{
if (!iInterval) /* at least 1 msec please! */
iInterval = 1;
if (pData->bRunning) /* only when really displaying */
if (!pData->fSettimer ((mng_handle)pData, iInterval))
MNG_ERROR (pData, MNG_APPTIMERERROR);
#ifdef MNG_SUPPORT_DYNAMICMNG
if ((!pData->bDynamic) || (pData->bRunning))
#else
if (pData->bRunning)
#endif
pData->bTimerset = MNG_TRUE; /* and indicate so */
return MNG_NOERROR;
}
/* ************************************************************************** */
MNG_LOCAL mng_uint32 calculate_delay (mng_datap pData,
mng_uint32 iDelay)
{
mng_uint32 iTicks = pData->iTicks;
mng_uint32 iWaitfor = 1; /* default non-MNG delay */
if (!iTicks) /* tick_count not specified ? */
if (pData->eImagetype == mng_it_mng)
iTicks = 1000;
if (iTicks)
{
switch (pData->iSpeed) /* honor speed modifier */
{
case mng_st_fast :
{
iWaitfor = (mng_uint32)(( 500 * iDelay) / iTicks);
break;
}
case mng_st_slow :
{
iWaitfor = (mng_uint32)((3000 * iDelay) / iTicks);
break;
}
case mng_st_slowest :
{
iWaitfor = (mng_uint32)((8000 * iDelay) / iTicks);
break;
}
default :
{
iWaitfor = (mng_uint32)((1000 * iDelay) / iTicks);
}
}
}
return iWaitfor;
}
/* ************************************************************************** */
/* * * */
/* * 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 mng_display_progressive_refresh (mng_datap pData,
mng_uint32 iInterval)
{
{ /* let the app refresh first ? */
if ((pData->bRunning) && (!pData->bSkipping) &&
(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_LOCAL 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
{
#ifndef MNG_SKIPCHUNK_FRAM
if (pData->iFramedelay > 0) /* real delay ? */
{ /* let the app refresh first ? */
if ((pData->bRunning) && (!pData->bSkipping) &&
(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;
#ifndef MNG_SKIPCHUNK_TERM
if (pData->bOnlyfirstframe) /* only processing first frame after TERM ? */
{
pData->iFramesafterTERM++;
/* did we do a frame yet ? */
if (pData->iFramesafterTERM > 1)
{ /* then that's it; just stop right here ! */
pData->pCurraniobj = MNG_NULL;
pData->bRunning = MNG_FALSE;
return MNG_NOERROR;
}
}
#endif
if (pData->fGettickcount)
{ /* 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;
}
else
{
iRuninterval = 0;
}
iWaitfor = calculate_delay (pData, pData->iFramedelay);
if (iWaitfor > iRuninterval) /* delay necessary ? */
iInterval = iWaitfor - iRuninterval;
else
iInterval = 1; /* force app to process messageloop */
/* set the timer ? */
if (((pData->bRunning) || (pData->bSearching) || (pData->bReading)) &&
(!pData->bSkipping))
{
iRetcode = set_delay (pData, iInterval);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
if (!pData->bSkipping) /* increase frametime in advance */
pData->iFrametime = pData->iFrametime + iWaitfor;
/* setup for next delay */
pData->iFramedelay = pData->iNextdelay;
#endif
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_INTERFRAME_DELAY, MNG_LC_END);
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
MNG_LOCAL void set_display_routine (mng_datap pData)
{ /* actively running ? */
if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping))
{
switch (pData->iCanvasstyle) /* determine display routine */
{
#ifndef MNG_SKIPCANVAS_RGB8
case MNG_CANVAS_RGB8 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb8; break; }
#endif
#ifndef MNG_SKIPCANVAS_RGBA8
case MNG_CANVAS_RGBA8 : { pData->fDisplayrow = (mng_fptr)mng_display_rgba8; break; }
#endif
#ifndef MNG_SKIPCANVAS_RGBA8_PM
case MNG_CANVAS_RGBA8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_rgba8_pm; break; }
#endif
#ifndef MNG_SKIPCANVAS_ARGB8
case MNG_CANVAS_ARGB8 : { pData->fDisplayrow = (mng_fptr)mng_display_argb8; break; }
#endif
#ifndef MNG_SKIPCANVAS_ARGB8_PM
case MNG_CANVAS_ARGB8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_argb8_pm; break; }
#endif
#ifndef MNG_SKIPCANVAS_RGB8_A8
case MNG_CANVAS_RGB8_A8 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb8_a8; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGR8
case MNG_CANVAS_BGR8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr8; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGRX8
case MNG_CANVAS_BGRX8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgrx8; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGRA8
case MNG_CANVAS_BGRA8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgra8; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGRA8_PM
case MNG_CANVAS_BGRA8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_bgra8_pm; break; }
#endif
#ifndef MNG_SKIPCANVAS_ABGR8
case MNG_CANVAS_ABGR8 : { pData->fDisplayrow = (mng_fptr)mng_display_abgr8; break; }
#endif
#ifndef MNG_SKIPCANVAS_ABGR8_PM
case MNG_CANVAS_ABGR8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_abgr8_pm; break; }
#endif
#ifndef MNG_SKIPCANVAS_RGB565
case MNG_CANVAS_RGB565 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb565; break; }
#endif
#ifndef MNG_SKIPCANVAS_RGBA565
case MNG_CANVAS_RGBA565 : { pData->fDisplayrow = (mng_fptr)mng_display_rgba565; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGR565
case MNG_CANVAS_BGR565 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr565; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGRA565
case MNG_CANVAS_BGRA565 : { pData->fDisplayrow = (mng_fptr)mng_display_bgra565; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGR565_A8
case MNG_CANVAS_BGR565_A8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr565_a8; break; }
#endif
#ifndef MNG_SKIPCANVAS_RGB555
case MNG_CANVAS_RGB555 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb555; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGR555
case MNG_CANVAS_BGR555 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr555; break; }
#endif
#ifndef MNG_NO_16BIT_SUPPORT
/* case MNG_CANVAS_RGB16 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb16; break; } */
/* case MNG_CANVAS_RGBA16 : { pData->fDisplayrow = (mng_fptr)mng_display_rgba16; break; } */
/* case MNG_CANVAS_ARGB16 : { pData->fDisplayrow = (mng_fptr)mng_display_argb16; break; } */
/* case MNG_CANVAS_BGR16 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr16; break; } */
/* case MNG_CANVAS_BGRA16 : { pData->fDisplayrow = (mng_fptr)mng_display_bgra16; break; } */
/* case MNG_CANVAS_ABGR16 : { pData->fDisplayrow = (mng_fptr)mng_display_abgr16; break; } */
#endif
/* case MNG_CANVAS_INDEX8 : { pData->fDisplayrow = (mng_fptr)mng_display_index8; break; } */
/* case MNG_CANVAS_INDEXA8 : { pData->fDisplayrow = (mng_fptr)mng_display_indexa8; break; } */
/* case MNG_CANVAS_AINDEX8 : { pData->fDisplayrow = (mng_fptr)mng_display_aindex8; break; } */
/* case MNG_CANVAS_GRAY8 : { pData->fDisplayrow = (mng_fptr)mng_display_gray8; break; } */
/* case MNG_CANVAS_AGRAY8 : { pData->fDisplayrow = (mng_fptr)mng_display_agray8; break; } */
/* case MNG_CANVAS_GRAYA8 : { pData->fDisplayrow = (mng_fptr)mng_display_graya8; break; } */
#ifndef MNG_NO_16BIT_SUPPORT
/* case MNG_CANVAS_GRAY16 : { pData->fDisplayrow = (mng_fptr)mng_display_gray16; break; } */
/* case MNG_CANVAS_GRAYA16 : { pData->fDisplayrow = (mng_fptr)mng_display_graya16; break; } */
/* case MNG_CANVAS_AGRAY16 : { pData->fDisplayrow = (mng_fptr)mng_display_agray16; break; } */
#endif
/* case MNG_CANVAS_DX15 : { pData->fDisplayrow = (mng_fptr)mng_display_dx15; break; } */
/* case MNG_CANVAS_DX16 : { pData->fDisplayrow = (mng_fptr)mng_display_dx16; break; } */
}
}
return;
}
/* ************************************************************************** */
MNG_LOCAL 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->bSearching)) && (!pData->bSkipping))
{
mng_int32 iY;
mng_retcode iRetcode;
mng_bool bColorcorr = MNG_FALSE;
/* 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_uint8p pPrevrow = pData->pPrevrow;
mng_uint8p pRGBArow = pData->pRGBArow;
mng_bool bIsRGBA16 = pData->bIsRGBA16;
mng_bool bIsOpaque = pData->bIsOpaque;
mng_fptr fCorrectrow = pData->fCorrectrow;
mng_fptr fDisplayrow = pData->fDisplayrow;
mng_fptr fRetrieverow = pData->fRetrieverow;
mng_objectp pCurrentobj = pData->pCurrentobj;
mng_objectp pRetrieveobj = pData->pRetrieveobj;
pData->iDestl = 0; /* determine clipping region */
pData->iDestt = 0;
pData->iDestr = pData->iWidth;
pData->iDestb = pData->iHeight;
#ifndef MNG_SKIPCHUNK_FRAM
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);
}
#endif
/* 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)mng_restore_bkgd_bgcolor;
#ifndef MNG_SKIPCHUNK_bKGD
if (((pData->eImagetype == mng_it_png) || (pData->eImagetype == mng_it_jng)) &&
(pData->bUseBKGD))
{ /* prefer bKGD in PNG/JNG */
if (!pData->pCurrentobj)
pData->pCurrentobj = pData->pObjzero;
if (((mng_imagep)pData->pCurrentobj)->pImgbuf->bHasBKGD)
{
pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bkgd;
bColorcorr = MNG_TRUE;
}
}
#endif
if (pData->fGetbkgdline) /* background-canvas-access callback set ? */
{
switch (pData->iBkgdstyle)
{
#ifndef MNG_SKIPCANVAS_RGB8
case MNG_CANVAS_RGB8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_rgb8; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGR8
case MNG_CANVAS_BGR8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgr8; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGRX8
case MNG_CANVAS_BGRX8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgrx8; break; }
#endif
#ifndef MNG_SKIPCANVAS_BGR565
case MNG_CANVAS_BGR565 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgr565; break; }
#endif
#ifndef MNG_SKIPCANVAS_RGB565
case MNG_CANVAS_RGB565 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_rgb565; break; }
#endif
#ifndef MNG_NO_16BIT_SUPPORT
/* case MNG_CANVAS_RGB16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_rgb16; break; } */
/* case MNG_CANVAS_BGR16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgr16; break; } */
#endif
/* case MNG_CANVAS_INDEX8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_index8; break; } */
/* case MNG_CANVAS_GRAY8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_gray8; break; } */
#ifndef MNG_NO_16BIT_SUPPORT
/* case MNG_CANVAS_GRAY16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_gray16; break; } */
#endif
/* case MNG_CANVAS_DX15 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_dx15; break; } */
/* case MNG_CANVAS_DX16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_dx16; break; } */
}
}
#ifndef MNG_SKIPCHUNK_BACK
if (pData->bHasBACK)
{ /* background image ? */
if ((pData->iBACKmandatory & 0x02) && (pData->iBACKimageid))
{
pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_backcolor;
bColorcorr = MNG_TRUE;
}
else /* background color ? */
if (pData->iBACKmandatory & 0x01)
{
pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_backcolor;
bColorcorr = MNG_TRUE;
}
}
#endif
pData->fCorrectrow = MNG_NULL; /* default no color-correction */
if (bColorcorr) /* do we have to do color-correction ? */
{
#ifdef MNG_NO_CMS
iRetcode = MNG_NOERROR;
#else
#if defined(MNG_FULL_CMS) /* determine color-management routine */
iRetcode = mng_init_full_cms (pData, MNG_TRUE, MNG_FALSE, MNG_FALSE);
#elif defined(MNG_GAMMA_ONLY)
iRetcode = mng_init_gamma_only (pData, MNG_TRUE, MNG_FALSE, MNG_FALSE);
#elif defined(MNG_APP_CMS)
iRetcode = mng_init_app_cms (pData, MNG_TRUE, MNG_FALSE, MNG_FALSE);
#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->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 = mng_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_FULL_CMS) /* cleanup cms stuff */
if (bColorcorr) /* did we do color-correction ? */
{
iRetcode = mng_clear_cms (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
}
#endif
#ifndef MNG_SKIPCHUNK_BACK
/* background image ? */
if ((pData->bHasBACK) && (pData->iBACKmandatory & 0x02) && (pData->iBACKimageid))
{
mng_imagep pImage;
/* let's find that object then */
pData->pRetrieveobj = mng_find_imageobject (pData, pData->iBACKimageid);
pImage = (mng_imagep)pData->pRetrieveobj;
/* exists, viewable and visible ? */
if ((pImage) && (pImage->bViewable) && (pImage->bVisible))
{ /* will it fall within the target region ? */
if ((pImage->iPosx < pData->iDestr) && (pImage->iPosy < pData->iDestb) &&
((pData->iBACKtile) ||
((pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth >= pData->iDestl) &&
(pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight >= pData->iDestt) )) &&
((!pImage->bClipped) ||
((pImage->iClipl <= pImage->iClipr) && (pImage->iClipt <= pImage->iClipb) &&
(pImage->iClipl < pData->iDestr) && (pImage->iClipr >= pData->iDestl) &&
(pImage->iClipt < pData->iDestb) && (pImage->iClipb >= pData->iDestt) )))
{ /* right; we've got ourselves something to do */
if (pImage->bClipped) /* clip output region with image's clipping region ? */
{
if (pImage->iClipl > pData->iDestl)
pData->iDestl = pImage->iClipl;
if (pImage->iClipr < pData->iDestr)
pData->iDestr = pImage->iClipr;
if (pImage->iClipt > pData->iDestt)
pData->iDestt = pImage->iClipt;
if (pImage->iClipb < pData->iDestb)
pData->iDestb = pImage->iClipb;
}
/* image offset does some extra clipping too ! */
if (pImage->iPosx > pData->iDestl)
pData->iDestl = pImage->iPosx;
if (pImage->iPosy > pData->iDestt)
pData->iDestt = pImage->iPosy;
if (!pData->iBACKtile) /* without tiling further clipping is needed */
{
if (pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth < pData->iDestr)
pData->iDestr = pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth;
if (pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight < pData->iDestb)
pData->iDestb = pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight;
}
pData->iSourcel = 0; /* source relative to destination */
pData->iSourcer = pData->iDestr - pData->iDestl;
pData->iSourcet = 0;
pData->iSourceb = pData->iDestb - pData->iDestt;
/* 16-bit background ? */
#ifdef MNG_NO_16BIT_SUPPORT
pData->bIsRGBA16 = MNG_FALSE;
#else
pData->bIsRGBA16 = (mng_bool)(pImage->pImgbuf->iBitdepth > 8);
#endif
/* let restore routine know the offsets !!! */
pData->iBackimgoffsx = pImage->iPosx;
pData->iBackimgoffsy = pImage->iPosy;
pData->iBackimgwidth = pImage->pImgbuf->iWidth;
pData->iBackimgheight = pImage->pImgbuf->iHeight;
pData->iRow = 0; /* start at the top again !! */
/* determine background object retrieval routine */
switch (pImage->pImgbuf->iColortype)
{
case 0 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_g16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_g8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 2 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 3 : { pData->fRetrieverow = (mng_fptr)mng_retrieve_idx8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 4 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 6 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 8 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_g16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_g8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case 10 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case 12 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 14 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8;
pData->bIsOpaque = MNG_FALSE;
break;
}
}
#ifdef MNG_NO_CMS
iRetcode = MNG_NOERROR;
#else
#if defined(MNG_FULL_CMS) /* determine color-management routine */
iRetcode = mng_init_full_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE);
#elif defined(MNG_GAMMA_ONLY)
iRetcode = mng_init_gamma_only (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE);
#elif defined(MNG_APP_CMS)
iRetcode = mng_init_app_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE);
#endif
if (iRetcode) /* on error bail out */
return iRetcode;
#endif /* MNG_NO_CMS */
/* get temporary row-buffers */
MNG_ALLOC (pData, pData->pPrevrow, pData->iRowsize);
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_restore_bkgd_backimage (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 = mng_next_row (pData);
iY++; /* and next line */
}
/* drop temporary row-buffers */
MNG_FREE (pData, pData->pRGBArow, pData->iRowsize);
MNG_FREE (pData, pData->pPrevrow, pData->iRowsize);
if (iRetcode) /* on error bail out */
return iRetcode;
#if defined(MNG_FULL_CMS) /* cleanup cms stuff */
iRetcode = mng_clear_cms (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
#endif
}
}
}
#endif
}
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->pPrevrow = pPrevrow;
pData->pRGBArow = pRGBArow;
pData->bIsRGBA16 = bIsRGBA16;
pData->bIsOpaque = bIsOpaque;
pData->fCorrectrow = fCorrectrow;
pData->fDisplayrow = fDisplayrow;
pData->fRetrieverow = fRetrieverow;
pData->pCurrentobj = pCurrentobj;
pData->pRetrieveobj = pRetrieveobj;
}
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_LOAD_BKGDLAYER, MNG_LC_END);
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
MNG_LOCAL 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 = mng_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_LOCAL 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 ? */
{
#ifndef MNG_SKIPCHUNK_FRAM
mng_uint8 iOldmode = pData->iFramemode;
/* interframe delay required ? */
if ((iOldmode == 2) || (iOldmode == 4))
{
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 = pData->iFRAMdelay;
if (iChangedelay == 2) /* also overall ? */
pData->iFRAMdelay = iDelay;
}
else
{ /* reload default */
pData->iNextdelay = pData->iFRAMdelay;
}
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;
}
#endif
}
if (!pData->bTimerset) /* timer still off ? */
{
if (
#ifndef MNG_SKIPCHUNK_FRAM
(pData->iFramemode == 4) || /* insert background layer after a new frame */
#endif
(!pData->iLayerseq)) /* and certainly before the very first layer */
iRetcode = load_bkgdlayer (pData);
if (iRetcode) /* on error bail out */
return iRetcode;
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_LOCAL 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
#ifndef MNG_SKIPCHUNK_FRAM
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;
}
#endif
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);
pData->iLayerseq++; /* and it counts as a layer then ! */
}
}
#ifndef MNG_SKIPCHUNK_FRAM
else
if (pData->iFramemode == 3) /* restore background for each layer ? */
iRetcode = load_bkgdlayer (pData);
#endif
if (iRetcode) /* on error bail out */
return iRetcode;
#ifndef MNG_NO_DELTA_PNG
if (pData->bHasDHDR) /* processing a delta-image ? */
pImage = (mng_imagep)pData->pDeltaImage;
else
#endif
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);
}
#ifndef MNG_SKIPCHUNK_FRAM
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);
}
#endif
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;
}
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 mng_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 ? */
#ifndef MNG_SKIPCHUNK_MAGN
if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping))
{
if ( (!pData->iBreakpoint) && /* needs magnification ? */
( (pImage->iMAGN_MethodX) || (pImage->iMAGN_MethodY) ) )
{
iRetcode = mng_magnify_imageobject (pData, pImage);
if (iRetcode) /* on error bail out */
return iRetcode;
}
}
#endif
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;
pData->iLayerseq++; /* and it counts as a layer then ! */
}
/* actively running ? */
if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping))
{
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 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_g16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_g8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 2 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 3 : { pData->fRetrieverow = (mng_fptr)mng_retrieve_idx8;
pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS);
break;
}
case 4 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 6 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 8 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_g16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_g8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case 10 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8;
pData->bIsOpaque = MNG_TRUE;
break;
}
case 12 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8;
pData->bIsOpaque = MNG_FALSE;
break;
}
case 14 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16;
else
#endif
pData->fRetrieverow = (mng_fptr)mng_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 ? */
#ifndef MNG_NO_16BIT_SUPPORT
if (pImage->pImgbuf->iBitdepth > 8)
{
pData->bIsRGBA16 = MNG_TRUE;
pData->iRowsize = pData->iRowsamples << 3;
}
#endif
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 = mng_init_full_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE);
#elif defined(MNG_GAMMA_ONLY)
iRetcode = mng_init_gamma_only (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE);
#elif defined(MNG_APP_CMS)
iRetcode = mng_init_app_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE);
#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 = mng_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_FULL_CMS) /* 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 ! */
}
/* ************************************************************************** */
#ifndef MNG_NO_DELTA_PNG
mng_retcode mng_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;
mng_ptr pSaveRGBA;
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_EXECUTE_DELTA_IMAGE, MNG_LC_START);
#endif
/* actively running ? */
if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping))
{
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 */
}
#ifndef MNG_SKIPCHUNK_bKGD
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;
}
#endif
if (pBufdelta->bHasGAMA) /* gamma in source ? */
{
pBuftarget->bHasGAMA = MNG_TRUE; /* drop it onto the target */
pBuftarget->iGamma = pBufdelta->iGamma;
}
#ifndef MNG_SKIPCHUNK_cHRM
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;
}
#endif
#ifndef MNG_SKIPCHUNK_sRGB
if (pBufdelta->bHasSRGB) /* sRGB in delta ? */
{ /* drop it onto the target */
pBuftarget->bHasSRGB = MNG_TRUE;
pBuftarget->iRenderingintent = pBufdelta->iRenderingintent;
}
#endif
#ifndef MNG_SKIPCHUNK_iCCP
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 its length as well */
pBuftarget->iProfilesize = pBufdelta->iProfilesize;
}
#endif
/* need to execute delta pixels ? */
if ((!pData->bDeltaimmediate) && (pData->iDeltatype != MNG_DELTATYPE_NOCHANGE))
{
pData->fScalerow = MNG_NULL; /* not needed by default */
switch (pBufdelta->iBitdepth) /* determine scaling routine */
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1 : {
switch (pBuftarget->iBitdepth)
{
case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g2; break; }
case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g4; break; }
case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g16; break; }
#endif
}
break;
}
case 2 : {
switch (pBuftarget->iBitdepth)
{
case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g1; break; }
case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g4; break; }
case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g16; break; }
#endif
}
break;
}
case 4 : {
switch (pBuftarget->iBitdepth)
{
case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g1; break; }
case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g2; break; }
case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g16; break; }
#endif
}
break;
}
#endif /* MNG_NO_1_2_4BIT_SUPPORT */
case 8 : {
switch (pBufdelta->iColortype)
{
case 0 : ;
case 3 : ;
case 8 : {
switch (pBuftarget->iBitdepth)
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g1; break; }
case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g2; break; }
case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g4; break; }
#endif /* MNG_NO_1_2_4BIT_SUPPORT */
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g16; break; }
#endif
}
break;
}
case 2 : ;
case 10 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pBuftarget->iBitdepth == 16)
pData->fScalerow = (mng_fptr)mng_scale_rgb8_rgb16;
#endif
break;
}
case 4 : ;
case 12 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pBuftarget->iBitdepth == 16)
pData->fScalerow = (mng_fptr)mng_scale_ga8_ga16;
#endif
break;
}
case 6 : ;
case 14 : {
#ifndef MNG_NO_16BIT_SUPPORT
if (pBuftarget->iBitdepth == 16)
pData->fScalerow = (mng_fptr)mng_scale_rgba8_rgba16;
#endif
break;
}
}
break;
}
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : {
switch (pBufdelta->iColortype)
{
case 0 : ;
case 3 : ;
case 8 : {
switch (pBuftarget->iBitdepth)
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g1; break; }
case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g2; break; }
case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g4; break; }
#endif /* MNG_NO_1_2_4BIT_SUPPORT */
case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g8; break; }
}
break;
}
case 2 : ;
case 10 : {
if (pBuftarget->iBitdepth == 8)
pData->fScalerow = (mng_fptr)mng_scale_rgb16_rgb8;
break;
}
case 4 : ;
case 12 : {
if (pBuftarget->iBitdepth == 8)
pData->fScalerow = (mng_fptr)mng_scale_ga16_ga8;
break;
}
case 6 : ;
case 14 : {
if (pBuftarget->iBitdepth == 8)
pData->fScalerow = (mng_fptr)mng_scale_rgba16_rgba8;
break;
}
}
break;
}
#endif
}
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)
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1 : { pData->fDeltarow = (mng_fptr)mng_delta_g1_g1; break; }
case 2 : { pData->fDeltarow = (mng_fptr)mng_delta_g2_g2; break; }
case 4 : { pData->fDeltarow = (mng_fptr)mng_delta_g4_g4; break; }
#endif /* MNG_NO_1_2_4BIT_SUPPORT */
case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_g8_g8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_g16_g16; break; }
#endif
}
}
}
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)mng_delta_rgb8_rgb8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgb16_rgb16; break; }
#endif
}
}
}
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)
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1 : { pData->fDeltarow = (mng_fptr)mng_delta_g1_g1; break; }
case 2 : { pData->fDeltarow = (mng_fptr)mng_delta_g2_g2; break; }
case 4 : { pData->fDeltarow = (mng_fptr)mng_delta_g4_g4; break; }
#endif /* MNG_NO_1_2_4BIT_SUPPORT */
case 8 : { pData->fDeltarow = (mng_fptr)mng_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)mng_delta_ga8_ga8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_ga16_ga16; break; }
#endif
}
}
}
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)mng_delta_ga8_g8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_ga16_g16; break; }
#endif
}
}
}
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)mng_delta_ga8_a8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_ga16_a16; break; }
#endif
}
}
}
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)mng_delta_rgba8_rgba8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba16_rgba16; break; }
#endif
}
}
}
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)mng_delta_rgba8_rgb8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba16_rgb16; break; }
#endif
}
}
}
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)mng_delta_rgba8_a8; break; }
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba16_a16; break; }
#endif
}
}
}
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;
pSaveRGBA = pData->pRGBArow; /* save current temp-buffer! */
/* get a temporary row-buffer */
MNG_ALLOC (pData, pData->pRGBArow, (pBufdelta->iRowsize << 1));
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 = mng_next_row (pData);
iY++; /* and next line */
}
/* drop the temporary row-buffer */
MNG_FREE (pData, pData->pRGBArow, (pBufdelta->iRowsize << 1));
pData->pRGBArow = pSaveRGBA; /* restore saved temp-buffer! */
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;
}
#endif /* MNG_NO_DELTA_PNG */
/* ************************************************************************** */
#ifndef MNG_SKIPCHUNK_SAVE
MNG_LOCAL 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 */
#ifndef MNG_SKIPCHUNK_BACK
pSave->iBACKred = pData->iBACKred;
pSave->iBACKgreen = pData->iBACKgreen;
pSave->iBACKblue = pData->iBACKblue;
pSave->iBACKmandatory = pData->iBACKmandatory;
pSave->iBACKimageid = pData->iBACKimageid;
pSave->iBACKtile = pData->iBACKtile;
#endif
#ifndef MNG_SKIPCHUNK_FRAM
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;
#endif
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;
#ifndef MNG_SKIPCHUNK_cHRM
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;
#endif
#ifndef MNG_SKIPCHUNK_sRGB
pSave->iGlobalRendintent = pData->iGlobalRendintent;
#endif
#ifndef MNG_SKIPCHUNK_iCCP
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);
}
#endif
#ifndef MNG_SKIPCHUNK_bKGD
pSave->iGlobalBKGDred = pData->iGlobalBKGDred;
pSave->iGlobalBKGDgreen = pData->iGlobalBKGDgreen;
pSave->iGlobalBKGDblue = pData->iGlobalBKGDblue;
#endif
/* freeze current image objects */
pImage = (mng_imagep)pData->pFirstimgobj;
while (pImage)
{ /* freeze the object AND its 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;
}
#endif
/* ************************************************************************** */
mng_retcode mng_reset_objzero (mng_datap pData)
{
mng_imagep pImage = (mng_imagep)pData->pObjzero;
mng_retcode iRetcode = mng_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;
#ifndef MNG_SKIPCHUNK_MAGN
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;
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
MNG_LOCAL mng_retcode restore_state (mng_datap pData)
{
#ifndef MNG_SKIPCHUNK_SAVE
mng_savedatap pSave;
#endif
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;
#ifndef MNG_SKIPCHUNK_SAVE
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 */
#ifndef MNG_SKIPCHUNK_BACK
pData->iBACKred = pSave->iBACKred;
pData->iBACKgreen = pSave->iBACKgreen;
pData->iBACKblue = pSave->iBACKblue;
pData->iBACKmandatory = pSave->iBACKmandatory;
pData->iBACKimageid = pSave->iBACKimageid;
pData->iBACKtile = pSave->iBACKtile;
#endif
#ifndef MNG_SKIPCHUNK_FRAM
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;
/* NOOOOOOOOOOOO */
/* 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->iNextdelay = pData->iFramedelay;
#endif
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;
#ifndef MNG_SKIPCHUNK_cHRM
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;
#endif
pData->iGlobalRendintent = pSave->iGlobalRendintent;
#ifndef MNG_SKIPCHUNK_iCCP
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);
}
#endif
#ifndef MNG_SKIPCHUNK_bKGD
pData->iGlobalBKGDred = pSave->iGlobalBKGDred;
pData->iGlobalBKGDgreen = pSave->iGlobalBKGDgreen;
pData->iGlobalBKGDblue = pSave->iGlobalBKGDblue;
#endif
}
else /* no saved-data; so reset the lot */
#endif /* SKIPCHUNK_SAVE */
{
#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 */
#ifndef MNG_SKIPCHUNK_TERM
if (!pData->bMisplacedTERM) /* backward compatible ugliness !!! */
{
pData->iBACKred = 0;
pData->iBACKgreen = 0;
pData->iBACKblue = 0;
pData->iBACKmandatory = 0;
pData->iBACKimageid = 0;
pData->iBACKtile = 0;
}
#endif
#ifndef MNG_SKIPCHUNK_FRAM
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;
/* NOOOOOOOOOOOO */
/* 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->iNextdelay = pData->iFramedelay;
#endif
pData->iGlobalPLTEcount = 0;
pData->iGlobalTRNSrawlen = 0;
pData->iGlobalGamma = 0;
#ifndef MNG_SKIPCHUNK_cHRM
pData->iGlobalWhitepointx = 0;
pData->iGlobalWhitepointy = 0;
pData->iGlobalPrimaryredx = 0;
pData->iGlobalPrimaryredy = 0;
pData->iGlobalPrimarygreenx = 0;
pData->iGlobalPrimarygreeny = 0;
pData->iGlobalPrimarybluex = 0;
pData->iGlobalPrimarybluey = 0;
#endif
pData->iGlobalRendintent = 0;
#ifndef MNG_SKIPCHUNK_iCCP
if (pData->iGlobalProfilesize) /* free a previous profile ? */
MNG_FREE (pData, pData->pGlobalProfile, pData->iGlobalProfilesize);
pData->iGlobalProfilesize = 0;
#endif
#ifndef MNG_SKIPCHUNK_bKGD
pData->iGlobalBKGDred = 0;
pData->iGlobalBKGDgreen = 0;
pData->iGlobalBKGDblue = 0;
#endif
}
#ifndef MNG_SKIPCHUNK_TERM
if (!pData->bMisplacedTERM) /* backward compatible ugliness !!! */
{
pImage = (mng_imagep)pData->pFirstimgobj;
/* drop un-frozen image objects */
while (pImage)
{
mng_imagep pNext = (mng_imagep)pImage->sHeader.pNext;
if (!pImage->bFrozen) /* is it un-frozen ? */
{
mng_imagep pPrev = (mng_imagep)pImage->sHeader.pPrev;
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 = mng_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; /* neeeext */
}
}
#endif
#ifdef MNG_SUPPORT_TRACE
MNG_TRACE (pData, MNG_FN_RESTORE_STATE, MNG_LC_END);
#endif
return MNG_NOERROR;
}
/* ************************************************************************** */
/* * * */
/* * General display processing routine * */
/* * * */
/* ************************************************************************** */
mng_retcode mng_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) /* clear timer-flag when searching !!! */
pData->bTimerset = MNG_FALSE;
/* do we need to finish something first ? */
if ((pData->iBreakpoint) && (pData->iBreakpoint < 99))
{
switch (pData->iBreakpoint) /* return to broken display routine */
{
#ifndef MNG_SKIPCHUNK_FRAM
case 1 : { iRetcode = mng_process_display_fram2 (pData); break; }
#endif
#ifndef MNG_SKIPCHUNK_SHOW
case 3 : ; /* same as 4 !!! */
case 4 : { iRetcode = mng_process_display_show (pData); break; }
#endif
#ifndef MNG_SKIPCHUNK_CLON
case 5 : { iRetcode = mng_process_display_clon2 (pData); break; }
#endif
#ifndef MNG_SKIPCHUNK_MAGN
case 9 : { iRetcode = mng_process_display_magn2 (pData); break; }
case 10 : { iRetcode = mng_process_display_mend2 (pData); break; }
#endif
#ifndef MNG_SKIPCHUNK_PAST
case 11 : { iRetcode = mng_process_display_past2 (pData); break; }
#endif
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 = mng_process_display_mend (pData);
if (!pData->pCurraniobj) /* refresh after last image ? */
pData->bNeedrefresh = MNG_TRUE;
}
if (pData->bSearching) /* are we looking for something ? */
{
if ((pData->iRequestframe) && (pData->iRequestframe <= pData->iFrameseq))
{
pData->iRequestframe = 0; /* found the frame ! */
pData->bSearching = MNG_FALSE;
}
else
if ((pData->iRequestlayer) && (pData->iRequestlayer <= pData->iLayerseq))
{
pData->iRequestlayer = 0; /* found the layer ! */
pData->bSearching = MNG_FALSE;
}
else
if ((pData->iRequesttime) && (pData->iRequesttime <= pData->iFrametime))
{
pData->iRequesttime = 0; /* found the playtime ! */
pData->bSearching = MNG_FALSE;
}
}
} /* until error or a break or no more objects */
while ((!iRetcode) && (pData->pCurraniobj) &&
(((pData->bRunning) && (!pData->bTimerset)) || (pData->bSearching)) &&
(!pData->bSectionwait) && (!pData->bFreezing));
if (iRetcode) /* on error bail out */
return iRetcode;
/* refresh needed ? */
if ((!pData->bTimerset) && (pData->bNeedrefresh))
{
iRetcode = mng_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 * */
/* * * */
/* ************************************************************************** */
#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT
png_imgtype mng_png_imgtype(mng_uint8 colortype, mng_uint8 bitdepth)
{
png_imgtype ret;
switch (bitdepth)
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1:
{
png_imgtype imgtype[]={png_g1,png_none,png_none,png_idx1};
ret=imgtype[colortype];
break;
}
case 2:
{
png_imgtype imgtype[]={png_g2,png_none,png_none,png_idx2};
ret=imgtype[colortype];
break;
}
case 4:
{
png_imgtype imgtype[]={png_g4,png_none,png_none,png_idx4};
ret=imgtype[colortype];
break;
}
#endif
case 8:
{
png_imgtype imgtype[]={png_g8,png_none,png_rgb8,png_idx8,png_ga8,
png_none,png_rgba8};
ret=imgtype[colortype];
break;
}
#ifndef MNG_NO_16BIT_SUPPORT
case 16:
{
png_imgtype imgtype[]={png_g16,png_none,png_rgb16,png_none,png_ga16,
png_none,png_rgba16};
ret=imgtype[colortype];
break;
}
#endif
default:
ret=png_none;
break;
}
return (ret);
}
#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */
/* ************************************************************************** */
mng_retcode mng_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;
#ifndef MNG_NO_DELTA_PNG
if (pData->bHasDHDR) /* is a delta-image ? */
{
if (pData->iDeltatype == MNG_DELTATYPE_REPLACE)
iRetcode = mng_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;
if (!iRetcode)
{ /* process immediately 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) );
/* be sure to reset object 0 */
iRetcode = mng_reset_object_details (pData, (mng_imagep)pData->pObjzero,
pData->iDatawidth, pData->iDataheight,
pData->iBitdepth, pData->iColortype,
pData->iCompression, pData->iFilter,
pData->iInterlace, MNG_TRUE);
}
}
else
#endif
{
if (pImage) /* update object buffer ? */
iRetcode = mng_reset_object_details (pData, pImage,
pData->iDatawidth, pData->iDataheight,
pData->iBitdepth, pData->iColortype,
pData->iCompression, pData->iFilter,
pData->iInterlace, MNG_TRUE);
else
iRetcode = mng_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;
}
#ifndef MNG_NO_DELTA_PNG
if (!pData->bHasDHDR)
#endif
{
if (pImage) /* real object ? */
pData->pStoreobj = pImage; /* tell the row routines */
else /* otherwise use object 0 */
pData->pStoreobj = pData->pObjzero;
#if !defined(MNG_INCLUDE_MPNG_PROPOSAL) && !defined(MNG_INCLUDE_ANG_PROPOSAL)
if ( /* display "on-the-fly" ? */
#ifndef MNG_SKIPCHUNK_MAGN
(((mng_imagep)pData->pStoreobj)->iMAGN_MethodX == 0) &&
(((mng_imagep)pData->pStoreobj)->iMAGN_MethodY == 0) &&
#endif
( (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 */
}
}
#endif
}
if (!pData->bTimerset) /* no timer break ? */
{
#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT
pData->fInitrowproc = (mng_fptr)mng_init_rowproc;
pData->ePng_imgtype=mng_png_imgtype(pData->iColortype,pData->iBitdepth);
#else
switch (pData->iColortype) /* determine row initialization routine */
{
case 0 : { /* gray */
switch (pData->iBitdepth)
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_g1_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_g1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_g2_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_g2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_g4_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_g4_i;
break;
}
#endif /* MNG_NO_1_2_4BIT_SUPPORT */
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_g8_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_g8_i;
break;
}
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_g16_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_g16_i;
break;
}
#endif
}
break;
}
case 2 : { /* rgb */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_rgb8_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_rgb8_i;
break;
}
#ifndef MNG_NO_16BIT_SUPPORT
case 16 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_rgb16_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_rgb16_i;
break;
}
#endif
}
break;
}
case 3 : { /* indexed */
switch (pData->iBitdepth)
{
#ifndef MNG_NO_1_2_4BIT_SUPPORT
case 1 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_idx1_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_idx1_i;
break;
}
case 2 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_idx2_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_idx2_i;
break;
}
case 4 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_idx4_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_idx4_i;
break;
}
#endif /* MNG_NO_1_2_4BIT_SUPPORT */
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_idx8_ni;
else
pData->fInitrowproc = (mng_fptr)mng_init_idx8_i;
break;
}
}
break;
}
case 4 : { /* gray+alpha */
switch (pData->iBitdepth)
{
case 8 : {
if (!pData->iInterlace)
pData->fInitrowproc = (mng_fptr)mng_init_ga8_ni;
else
pData