libmng_display.c

奇趣公司比较新的qt/emd版本

/* ************************************************************************** */
/* *             For conditions of distribution and use,                    * */
/* *                see copyright notice in libmng.h                        * */
/* ************************************************************************** */
/* *                                                                        * */
/* * project   : libmng                                                     * */
/* * file      : libmng_display.c          copyright (c) 2000-2004 G.Juyn   * */
/* * version   : 1.0.9                                                      * */
/* *                                                                        * */
/* * 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 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!)    * */
/* *                                                                        * */
/* *             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)       * */
/* *                                                                        * */
/* ************************************************************************** */

#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 */