mirror of https://github.com/GNOME/gimp.git
1387 lines
43 KiB
C
1387 lines
43 KiB
C
/*
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* Animation Optimizer plug-in version 1.1.2
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*
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* (c) Adam D. Moss, 1997-2003
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* adam@gimp.org
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* adam@foxbox.org
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*
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* This is part of the GIMP package and falls under the GPL.
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*/
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/*
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* REVISION HISTORY:
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*
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* 2003-11-23 : version 1.1.2
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* Improved optimization for GIF and file formats using
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* compression on a line-by-line basis. See bug #66367.
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* (Raphaël Quinet)
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*
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* 2003-08-12 : version 1.1.1
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* Disable the semi-broken background/foreground stuff
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* unless EXPERIMENTAL_BACKDROP_CODE is defined...
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*
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* 2001-04-28 : version 1.1.0 [ALPHA]
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* Support automated background (or foreground) removal.
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* It's half-broken.
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* Eliminated special optimized frame alignment cases --
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* we're not trying to be real-time like animationplay
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* and it complicates the code.
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*
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* 2000-08-30 : version 1.0.4
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* Change default frame duration from 125ms to 100ms for
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* consistancy.
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*
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* 2000-06-05 : version 1.0.3
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* Fix old bug which could cause errors in evaluating the
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* final pixel of each composed layer.
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*
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* 2000-01-13 : version 1.0.2
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* Collapse timing of completely optimized-away frames
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* onto previous surviving frame. Also be looser with
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* (XXXXX) tag parsing.
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*
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* 2000-01-07 : version 1.0.1
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* PDB interface submitted by Andreas Jaekel
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* <jaekel@cablecats.de>
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*
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* 98.05.17 : version 1.0.0
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* Finally preserves frame timings / layer names. Has
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* a progress bar now. No longer beta, I suppose.
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*
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* 98.04.19 : version 0.70.0
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* Plug-in doubles up as Animation UnOptimize too! (This
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* is somewhat more useful than it sounds.)
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*
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* 98.03.16 : version 0.61.0
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* Support more rare opaque/transparent combinations.
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*
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* 97.12.09 : version 0.60.0
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* Added support for INDEXED* and GRAY* images.
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*
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* 97.12.09 : version 0.52.0
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* Fixed some bugs.
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*
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* 97.12.08 : version 0.51.0
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* Relaxed bounding box on optimized layers marked
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* 'replace'.
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*
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* 97.12.07 : version 0.50.0
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* Initial release.
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*/
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/*
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* BUGS:
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* ?
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*/
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/*
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* TODO:
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* User interface
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*/
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/*
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#define EXPERIMENTAL_BACKDROP_CODE
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <libgimp/gimp.h>
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#include "libgimp/stdplugins-intl.h"
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typedef enum
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{
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DISPOSE_UNDEFINED = 0x00,
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DISPOSE_COMBINE = 0x01,
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DISPOSE_REPLACE = 0x02
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} DisposeType;
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typedef enum
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{
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OPOPTIMIZE = 0L,
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OPUNOPTIMIZE = 1L,
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OPFOREGROUND = 2L,
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OPBACKGROUND = 3L
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} operatingMode;
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/* Declare local functions. */
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static void query (void);
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static void run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals);
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static gint32 do_optimizations (GimpRunMode run_mode,
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gboolean diff_only);
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/* tag util functions*/
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static gint parse_ms_tag (const gchar *str);
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static DisposeType parse_disposal_tag (const gchar *str);
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static DisposeType get_frame_disposal (guint whichframe);
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static guint32 get_frame_duration (guint whichframe);
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static void remove_disposal_tag (gchar *dest,
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gchar *src);
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static void remove_ms_tag (gchar *dest,
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gchar *src);
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static gboolean is_disposal_tag (const gchar *str,
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DisposeType *disposal,
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gint *taglength);
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static gboolean is_ms_tag (const gchar *str,
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gint *duration,
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gint *taglength);
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GimpPlugInInfo PLUG_IN_INFO =
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{
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NULL, /* init_proc */
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NULL, /* quit_proc */
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query, /* query_proc */
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run, /* run_proc */
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};
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/* Global widgets'n'stuff */
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static guint width, height;
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static gint32 image_id;
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static gint32 new_image_id;
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static gint32 total_frames;
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static gint32 *layers;
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static GimpDrawable *drawable;
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static GimpImageBaseType imagetype;
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static GimpImageType drawabletype_alpha;
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static guchar pixelstep;
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static guchar *palette;
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static gint ncolours;
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static operatingMode opmode;
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MAIN ()
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static void
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query (void)
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{
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static GimpParamDef args[] =
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{
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{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
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{ GIMP_PDB_IMAGE, "image", "Input image" },
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{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable (unused)" }
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};
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static GimpParamDef return_args[] =
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{
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{ GIMP_PDB_IMAGE, "result", "Resulting image" }
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};
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gimp_install_procedure ("plug_in_animationoptimize",
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"This procedure applies various optimizations to"
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" a GIMP layer-based animation in an attempt to"
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" reduce the final file size. If a frame of the"
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" animation can use the 'combine' mode, this"
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" procedure attempts to maximize the number of"
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" ajdacent pixels having the same color, which"
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" improves the compression for some image formats"
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" such as GIF or MNG.",
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"",
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"Adam D. Moss <adam@gimp.org>",
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"Adam D. Moss <adam@gimp.org>",
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"1997-2003",
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N_("<Image>/Filters/Animation/Optimize (for _GIF)"),
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"RGB*, INDEXED*, GRAY*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args),
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G_N_ELEMENTS (return_args),
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args, return_args);
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gimp_install_procedure ("plug_in_animationoptimize_diff",
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"This procedure applies various optimizations to"
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" a GIMP layer-based animation in an attempt to"
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" reduce the final file size. If a frame of the"
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" animation can use the 'combine' mode, this"
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" procedure uses a simple difference between the"
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" frames.",
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"",
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"Adam D. Moss <adam@gimp.org>",
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"Adam D. Moss <adam@gimp.org>",
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"1997-2001",
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N_("<Image>/Filters/Animation/_Optimize (Difference)"),
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"RGB*, INDEXED*, GRAY*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args),
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G_N_ELEMENTS (return_args),
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args, return_args);
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gimp_install_procedure ("plug_in_animationunoptimize",
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"This procedure 'simplifies' a GIMP layer-based"
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" animation that has been AnimationOptimized. This"
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" makes the animation much easier to work with if,"
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" for example, the optimized version is all you"
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" have.",
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"",
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"Adam D. Moss <adam@gimp.org>",
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"Adam D. Moss <adam@gimp.org>",
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"1997-2001",
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N_("<Image>/Filters/Animation/_UnOptimize"),
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"RGB*, INDEXED*, GRAY*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args),
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G_N_ELEMENTS (return_args),
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args, return_args);
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#ifdef EXPERIMENTAL_BACKDROP_CODE
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gimp_install_procedure ("plug_in_animation_remove_backdrop",
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"This procedure attempts to remove the backdrop"
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" from a GIMP layer-based animation, leaving"
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" the foreground animation over transparency.",
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"",
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"Adam D. Moss <adam@gimp.org>",
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"Adam D. Moss <adam@gimp.org>",
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"2001",
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N_("<Image>/Filters/Animation/_Remove Backdrop"),
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"RGB*, INDEXED*, GRAY*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args),
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G_N_ELEMENTS (return_args),
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args, return_args);
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gimp_install_procedure ("plug_in_animation_find_backdrop",
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"This procedure attempts to remove the foreground"
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" from a GIMP layer-based animation, leaving"
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" a one-layered image containing only the"
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" constant backdrop image.",
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"",
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"Adam D. Moss <adam@gimp.org>",
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"Adam D. Moss <adam@gimp.org>",
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"2001",
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N_("<Image>/Filters/Animation/_Find Backdrop"),
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"RGB*, INDEXED*, GRAY*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args),
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G_N_ELEMENTS (return_args),
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args, return_args);
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#endif
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}
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static void
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run (const gchar *name,
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gint n_params,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals)
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{
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static GimpParam values[2];
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GimpRunMode run_mode;
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GimpPDBStatusType status = GIMP_PDB_SUCCESS;
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gboolean diff_only = FALSE;
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*nreturn_vals = 2;
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*return_vals = values;
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run_mode = param[0].data.d_int32;
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INIT_I18N ();
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if (run_mode == GIMP_RUN_NONINTERACTIVE && n_params != 3)
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{
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status = GIMP_PDB_CALLING_ERROR;
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}
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/* Check the procedure name we were called with, to decide
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what needs to be done. */
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if (strcmp (name, "plug_in_animationoptimize") == 0)
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opmode = OPOPTIMIZE;
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else if (strcmp (name, "plug_in_animationoptimize_diff") == 0)
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{
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opmode = OPOPTIMIZE;
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diff_only = TRUE;
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}
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else if (strcmp (name, "plug_in_animationunoptimize") == 0)
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opmode = OPUNOPTIMIZE;
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else if (strcmp (name, "plug_in_animation_find_backdrop") == 0)
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opmode = OPBACKGROUND;
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else if (strcmp (name, "plug_in_animation_remove_backdrop") == 0)
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opmode = OPFOREGROUND;
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else
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g_error("GAH!!!");
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if (status == GIMP_PDB_SUCCESS)
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{
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image_id = param[1].data.d_image;
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new_image_id = do_optimizations (run_mode, diff_only);
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if (run_mode != GIMP_RUN_NONINTERACTIVE)
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gimp_displays_flush();
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}
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values[0].type = GIMP_PDB_STATUS;
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values[0].data.d_status = status;
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values[1].type = GIMP_PDB_IMAGE;
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values[1].data.d_image = new_image_id;
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}
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/* Rendering Functions */
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static void
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total_alpha (guchar *imdata,
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guint32 numpix,
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guchar bytespp)
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{
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/* Set image to total-transparency w/black
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*/
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memset (imdata, 0, numpix * bytespp);
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}
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static void
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compose_row (gint frame_num,
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DisposeType dispose,
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gint row_num,
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guchar *dest,
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gint dest_width,
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GimpDrawable *drawable,
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gboolean cleanup)
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{
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static guchar *line_buf = NULL;
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guchar *srcptr;
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GimpPixelRgn pixel_rgn;
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gint rawx, rawy, rawbpp, rawwidth, rawheight;
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gint i;
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gboolean has_alpha;
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if (cleanup)
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{
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if (line_buf)
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{
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g_free (line_buf);
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line_buf = NULL;
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}
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return;
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}
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if (dispose == DISPOSE_REPLACE)
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{
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total_alpha (dest, dest_width, pixelstep);
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}
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gimp_drawable_offsets (drawable->drawable_id,
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&rawx,
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&rawy);
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rawheight = gimp_drawable_height (drawable->drawable_id);
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/* this frame has nothing to give us for this row; return */
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if (row_num >= rawheight + rawy ||
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row_num < rawy)
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return;
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rawbpp = gimp_drawable_bpp (drawable->drawable_id);
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rawwidth = gimp_drawable_width (drawable->drawable_id);
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has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
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if (line_buf)
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{
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g_free (line_buf);
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line_buf = NULL;
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}
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line_buf = g_malloc (rawwidth * rawbpp);
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/* Initialise and fetch the raw new frame row */
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gimp_pixel_rgn_init (&pixel_rgn,
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drawable,
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0, row_num - rawy,
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rawwidth, 1,
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FALSE,
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FALSE);
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gimp_pixel_rgn_get_rect (&pixel_rgn,
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line_buf,
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0, row_num - rawy,
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rawwidth, 1);
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/* render... */
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srcptr = line_buf;
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for (i=rawx; i<rawwidth+rawx; i++)
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{
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if (i>=0 && i<dest_width)
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{
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if ((!has_alpha) || ((*(srcptr+rawbpp-1))&128))
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{
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gint pi;
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for (pi = 0; pi < pixelstep-1; pi++)
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{
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dest[i*pixelstep +pi] = *(srcptr + pi);
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}
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dest[i*pixelstep + pixelstep - 1] = 255;
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}
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}
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srcptr += rawbpp;
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}
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}
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static gint32
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do_optimizations (GimpRunMode run_mode,
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gboolean diff_only)
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{
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GimpPixelRgn pixel_rgn;
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static guchar *rawframe = NULL;
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guchar *srcptr;
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guchar *destptr;
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gint row, this_frame_num;
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guint32 frame_sizebytes;
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gint32 new_layer_id;
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DisposeType dispose;
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guchar *this_frame = NULL;
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guchar *last_frame = NULL;
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guchar *opti_frame = NULL;
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guchar *back_frame = NULL;
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gint this_delay;
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gint cumulated_delay = 0;
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gint last_true_frame = -1;
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gint buflen;
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gchar *oldlayer_name;
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gchar *newlayer_name;
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gboolean can_combine;
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gint32 bbox_top, bbox_bottom, bbox_left, bbox_right;
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gint32 rbox_top, rbox_bottom, rbox_left, rbox_right;
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switch (opmode)
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{
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case OPUNOPTIMIZE:
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gimp_progress_init (_("UnOptimizing Animation..."));
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break;
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case OPFOREGROUND:
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gimp_progress_init (_("Removing Animation Background..."));
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break;
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case OPBACKGROUND:
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gimp_progress_init (_("Finding Animation Background..."));
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break;
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case OPOPTIMIZE:
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default:
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gimp_progress_init (_("Optimizing Animation..."));
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break;
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}
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width = gimp_image_width (image_id);
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height = gimp_image_height (image_id);
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layers = gimp_image_get_layers (image_id, &total_frames);
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imagetype = gimp_image_base_type (image_id);
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pixelstep = (imagetype == GIMP_RGB) ? 4 : 2;
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/* gimp_tile_cache_ntiles(total_frames * (width / gimp_tile_width() + 1) );*/
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drawabletype_alpha = (imagetype == GIMP_RGB) ? GIMP_RGBA_IMAGE :
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((imagetype == GIMP_INDEXED) ? GIMP_INDEXEDA_IMAGE : GIMP_GRAYA_IMAGE);
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frame_sizebytes = width * height * pixelstep;
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this_frame = g_malloc (frame_sizebytes);
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last_frame = g_malloc (frame_sizebytes);
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opti_frame = g_malloc (frame_sizebytes);
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if (opmode == OPBACKGROUND ||
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opmode == OPFOREGROUND)
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back_frame = g_malloc (frame_sizebytes);
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total_alpha (this_frame, width*height, pixelstep);
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total_alpha (last_frame, width*height, pixelstep);
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new_image_id = gimp_image_new(width, height, imagetype);
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gimp_image_undo_disable (new_image_id);
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if (imagetype == GIMP_INDEXED)
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{
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palette = gimp_image_get_cmap (image_id, &ncolours);
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gimp_image_set_cmap (new_image_id, palette, ncolours);
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}
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#if 1
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if (opmode == OPBACKGROUND ||
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opmode == OPFOREGROUND)
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{
|
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/* iterate through all rows of all frames, find statistical
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|
mode for each pixel position. */
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gint i,j;
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guchar **these_rows;
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guchar **red;
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guchar **green;
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guchar **blue;
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guint **count;
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guint *num_colours;
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these_rows = g_new (guchar *, total_frames);
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red = g_new (guchar *, total_frames);
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green = g_new (guchar *, total_frames);
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blue = g_new (guchar *, total_frames);
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count = g_new (guint *, total_frames);
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|
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num_colours = g_new (guint, width);
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|
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for (this_frame_num=0; this_frame_num<total_frames; this_frame_num++)
|
|
{
|
|
these_rows[this_frame_num] = g_malloc(width * pixelstep);
|
|
|
|
red[this_frame_num] = g_new (guchar, width);
|
|
green[this_frame_num] = g_new (guchar, width);
|
|
blue[this_frame_num] = g_new (guchar, width);
|
|
|
|
count[this_frame_num] = g_new0(guint, width);
|
|
}
|
|
|
|
for (row = 0; row < height; row++)
|
|
{
|
|
memset(num_colours, 0, width * sizeof(guint));
|
|
|
|
for (this_frame_num=0; this_frame_num<total_frames; this_frame_num++)
|
|
{
|
|
drawable =
|
|
gimp_drawable_get (layers[total_frames-(this_frame_num+1)]);
|
|
|
|
dispose = get_frame_disposal (this_frame_num);
|
|
|
|
compose_row(this_frame_num,
|
|
dispose,
|
|
row,
|
|
these_rows[this_frame_num],
|
|
width,
|
|
drawable,
|
|
FALSE
|
|
);
|
|
|
|
gimp_drawable_detach(drawable);
|
|
}
|
|
|
|
for (this_frame_num=0; this_frame_num<total_frames; this_frame_num++)
|
|
{
|
|
for (i=0; i<width; i++)
|
|
{
|
|
if (these_rows[this_frame_num][i * pixelstep + pixelstep -1]
|
|
>= 128)
|
|
{
|
|
for (j=0; j<num_colours[i]; j++)
|
|
{
|
|
|
|
switch (pixelstep)
|
|
{
|
|
case 4:
|
|
if (these_rows[this_frame_num][i * 4 +0] ==
|
|
red[j][i] &&
|
|
these_rows[this_frame_num][i * 4 +1] ==
|
|
green[j][i] &&
|
|
these_rows[this_frame_num][i * 4 +2] ==
|
|
blue[j][i])
|
|
{
|
|
(count[j][i])++;
|
|
goto same;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (these_rows[this_frame_num][i * 2 +0] ==
|
|
red[j][i])
|
|
{
|
|
(count[j][i])++;
|
|
goto same;
|
|
}
|
|
break;
|
|
default:
|
|
g_error ("Eeep!");
|
|
break;
|
|
}
|
|
}
|
|
|
|
count[num_colours[i]][i] = 1;
|
|
red[num_colours[i]][i] =
|
|
these_rows[this_frame_num][i * pixelstep];
|
|
if (pixelstep == 4)
|
|
{
|
|
green[num_colours[i]][i] =
|
|
these_rows[this_frame_num][i * 4 +1];
|
|
blue[num_colours[i]][i] =
|
|
these_rows[this_frame_num][i * 4 +2];
|
|
}
|
|
num_colours[i]++;
|
|
}
|
|
same:
|
|
/* nop */;
|
|
}
|
|
}
|
|
|
|
for (i=0; i<width; i++)
|
|
{
|
|
guint best_count = 0;
|
|
guchar best_r = 255, best_g = 0, best_b = 255;
|
|
|
|
for (j=0; j<num_colours[i]; j++)
|
|
{
|
|
if (count[j][i] > best_count)
|
|
{
|
|
best_count = count[j][i];
|
|
best_r = red[j][i];
|
|
best_g = green[j][i];
|
|
best_b = blue[j][i];
|
|
}
|
|
}
|
|
|
|
back_frame[width * pixelstep * row +i*pixelstep + 0] = best_r;
|
|
if (pixelstep == 4)
|
|
{
|
|
back_frame[width * pixelstep * row +i*pixelstep + 1] =
|
|
best_g;
|
|
back_frame[width * pixelstep * row +i*pixelstep + 2] =
|
|
best_b;
|
|
}
|
|
back_frame[width * pixelstep * row +i*pixelstep +pixelstep-1] =
|
|
(best_count == 0) ? 0 : 255;
|
|
|
|
if (best_count == 0)
|
|
g_warning("yayyyy!");
|
|
}
|
|
/* memcpy(&back_frame[width * pixelstep * row],
|
|
these_rows[0],
|
|
width * pixelstep);*/
|
|
}
|
|
|
|
for (this_frame_num=0; this_frame_num<total_frames; this_frame_num++)
|
|
{
|
|
g_free (these_rows[this_frame_num]);
|
|
g_free (red[this_frame_num]);
|
|
g_free (green[this_frame_num]);
|
|
g_free (blue[this_frame_num]);
|
|
g_free (count[this_frame_num]);
|
|
}
|
|
|
|
g_free (these_rows);
|
|
g_free (red);
|
|
g_free (green);
|
|
g_free (blue);
|
|
g_free (count);
|
|
g_free (num_colours);
|
|
}
|
|
#endif
|
|
|
|
if (opmode == OPBACKGROUND)
|
|
{
|
|
new_layer_id = gimp_layer_new(new_image_id,
|
|
"Backgroundx",
|
|
width, height,
|
|
drawabletype_alpha,
|
|
100.0,
|
|
GIMP_NORMAL_MODE);
|
|
|
|
gimp_image_add_layer (new_image_id, new_layer_id, 0);
|
|
|
|
drawable = gimp_drawable_get (new_layer_id);
|
|
|
|
gimp_pixel_rgn_init (&pixel_rgn, drawable,
|
|
0, 0,
|
|
width, height,
|
|
TRUE, FALSE);
|
|
gimp_pixel_rgn_set_rect (&pixel_rgn, back_frame,
|
|
0, 0,
|
|
width, height);
|
|
gimp_drawable_flush (drawable);
|
|
gimp_drawable_detach (drawable);
|
|
}
|
|
else
|
|
{
|
|
for (this_frame_num=0; this_frame_num<total_frames; this_frame_num++)
|
|
{
|
|
/*
|
|
* BUILD THIS FRAME into our 'this_frame' buffer.
|
|
*/
|
|
|
|
drawable =
|
|
gimp_drawable_get (layers[total_frames-(this_frame_num+1)]);
|
|
|
|
/* Image has been closed/etc since we got the layer list? */
|
|
/* FIXME - How do we tell if a gimp_drawable_get() fails? */
|
|
if (gimp_drawable_width (drawable->drawable_id) == 0)
|
|
{
|
|
gimp_quit ();
|
|
}
|
|
|
|
this_delay = get_frame_duration (this_frame_num);
|
|
dispose = get_frame_disposal (this_frame_num);
|
|
|
|
for (row = 0; row < height; row++)
|
|
{
|
|
compose_row (this_frame_num,
|
|
dispose,
|
|
row,
|
|
&this_frame[pixelstep*width * row],
|
|
width,
|
|
drawable,
|
|
FALSE
|
|
);
|
|
}
|
|
|
|
/* clean up */
|
|
gimp_drawable_detach(drawable);
|
|
|
|
|
|
if (opmode == OPFOREGROUND)
|
|
{
|
|
gint xit, yit, byteit;
|
|
|
|
for (yit=0; yit<height; yit++)
|
|
{
|
|
for (xit=0; xit<width; xit++)
|
|
{
|
|
for (byteit=0; byteit<pixelstep-1; byteit++)
|
|
{
|
|
if (back_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ byteit]
|
|
!=
|
|
this_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ byteit])
|
|
{
|
|
goto enough;
|
|
}
|
|
}
|
|
this_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep - 1] = 0;
|
|
enough:
|
|
/* nop */;
|
|
}
|
|
}
|
|
}
|
|
|
|
can_combine = FALSE;
|
|
bbox_left = 0;
|
|
bbox_top = 0;
|
|
bbox_right = width;
|
|
bbox_bottom = height;
|
|
rbox_left = 0;
|
|
rbox_top = 0;
|
|
rbox_right = width;
|
|
rbox_bottom = height;
|
|
|
|
/* copy 'this' frame into a buffer which we can safely molest */
|
|
memcpy (opti_frame, this_frame, frame_sizebytes);
|
|
/*
|
|
*
|
|
* OPTIMIZE HERE!
|
|
*
|
|
*/
|
|
if (
|
|
(this_frame_num != 0) /* Can't delta bottom frame! */
|
|
&& (opmode == OPOPTIMIZE)
|
|
)
|
|
{
|
|
gint xit, yit, byteit;
|
|
|
|
can_combine = TRUE;
|
|
|
|
/*
|
|
* SEARCH FOR BOUNDING BOX
|
|
*/
|
|
bbox_left = width;
|
|
bbox_top = height;
|
|
bbox_right = 0;
|
|
bbox_bottom = 0;
|
|
rbox_left = width;
|
|
rbox_top = height;
|
|
rbox_right = 0;
|
|
rbox_bottom = 0;
|
|
|
|
for (yit=0; yit<height; yit++)
|
|
{
|
|
for (xit=0; xit<width; xit++)
|
|
{
|
|
gboolean keep_pix;
|
|
gboolean opaq_pix;
|
|
|
|
/* Check if 'this' and 'last' are transparent */
|
|
if (!(this_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep-1]&128)
|
|
&&
|
|
!(last_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep-1]&128))
|
|
{
|
|
keep_pix = FALSE;
|
|
opaq_pix = FALSE;
|
|
goto decided;
|
|
}
|
|
/* Check if just 'this' is transparent */
|
|
if ((last_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep-1]&128)
|
|
&&
|
|
!(this_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep-1]&128))
|
|
{
|
|
keep_pix = TRUE;
|
|
opaq_pix = FALSE;
|
|
can_combine = FALSE;
|
|
goto decided;
|
|
}
|
|
/* Check if just 'last' is transparent */
|
|
if (!(last_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep-1]&128)
|
|
&&
|
|
(this_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep-1]&128))
|
|
{
|
|
keep_pix = TRUE;
|
|
opaq_pix = TRUE;
|
|
goto decided;
|
|
}
|
|
/* If 'last' and 'this' are opaque, we have
|
|
* to check if they're the same colour - we
|
|
* only have to keep the pixel if 'last' or
|
|
* 'this' are opaque and different.
|
|
*/
|
|
keep_pix = FALSE;
|
|
opaq_pix = TRUE;
|
|
for (byteit=0; byteit<pixelstep-1; byteit++)
|
|
{
|
|
if ((last_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ byteit]
|
|
!=
|
|
this_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ byteit])
|
|
)
|
|
{
|
|
keep_pix = TRUE;
|
|
goto decided;
|
|
}
|
|
}
|
|
decided:
|
|
if (opaq_pix)
|
|
{
|
|
if (xit<rbox_left) rbox_left=xit;
|
|
if (xit>rbox_right) rbox_right=xit;
|
|
if (yit<rbox_top) rbox_top=yit;
|
|
if (yit>rbox_bottom) rbox_bottom=yit;
|
|
}
|
|
if (keep_pix)
|
|
{
|
|
if (xit<bbox_left) bbox_left=xit;
|
|
if (xit>bbox_right) bbox_right=xit;
|
|
if (yit<bbox_top) bbox_top=yit;
|
|
if (yit>bbox_bottom) bbox_bottom=yit;
|
|
}
|
|
else
|
|
{
|
|
/* pixel didn't change this frame - make
|
|
* it transparent in our optimized buffer!
|
|
*/
|
|
opti_frame[yit*width*pixelstep + xit*pixelstep
|
|
+ pixelstep-1] = 0;
|
|
}
|
|
} /* xit */
|
|
} /* yit */
|
|
|
|
if (!can_combine)
|
|
{
|
|
bbox_left = rbox_left;
|
|
bbox_top = rbox_top;
|
|
bbox_right = rbox_right;
|
|
bbox_bottom = rbox_bottom;
|
|
}
|
|
|
|
bbox_right++;
|
|
bbox_bottom++;
|
|
|
|
if (can_combine && !diff_only)
|
|
{
|
|
/* Try to optimize the pixel data for RLE or LZW compression
|
|
* by making some transparent pixels non-transparent if they
|
|
* would have the same color as the adjacent pixels. This
|
|
* gives a better compression if the algorithm compresses
|
|
* the image line by line.
|
|
* See: http://bugzilla.gnome.org/show_bug.cgi?id=66367
|
|
* It may not be very efficient to add two additional passes
|
|
* over the pixels, but this hopefully makes the code easier
|
|
* to maintain and less error-prone.
|
|
*/
|
|
for (yit = bbox_top; yit < bbox_bottom; yit++)
|
|
{
|
|
/* Compare with previous pixels from left to right */
|
|
for (xit = bbox_left + 1; xit < bbox_right; xit++)
|
|
{
|
|
if (!(opti_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ pixelstep-1]&128)
|
|
&& (opti_frame[yit*width*pixelstep
|
|
+ (xit-1)*pixelstep
|
|
+ pixelstep-1]&128)
|
|
&& (last_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ pixelstep-1]&128))
|
|
{
|
|
for (byteit=0; byteit<pixelstep-1; byteit++)
|
|
{
|
|
if (opti_frame[yit*width*pixelstep
|
|
+ (xit-1)*pixelstep
|
|
+ byteit]
|
|
!=
|
|
last_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ byteit])
|
|
{
|
|
goto skip_right;
|
|
}
|
|
}
|
|
/* copy the color and alpha */
|
|
for (byteit=0; byteit<pixelstep; byteit++)
|
|
{
|
|
opti_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ byteit]
|
|
= last_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ byteit];
|
|
}
|
|
}
|
|
skip_right:
|
|
/* nop */;
|
|
} /* xit */
|
|
|
|
/* Compare with next pixels from right to left */
|
|
for (xit = bbox_right - 2; xit >= bbox_left; xit--)
|
|
{
|
|
if (!(opti_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ pixelstep-1]&128)
|
|
&& (opti_frame[yit*width*pixelstep
|
|
+ (xit+1)*pixelstep
|
|
+ pixelstep-1]&128)
|
|
&& (last_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ pixelstep-1]&128))
|
|
{
|
|
for (byteit=0; byteit<pixelstep-1; byteit++)
|
|
{
|
|
if (opti_frame[yit*width*pixelstep
|
|
+ (xit+1)*pixelstep
|
|
+ byteit]
|
|
!=
|
|
last_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ byteit])
|
|
{
|
|
goto skip_left;
|
|
}
|
|
}
|
|
/* copy the color and alpha */
|
|
for (byteit=0; byteit<pixelstep; byteit++)
|
|
{
|
|
opti_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ byteit]
|
|
= last_frame[yit*width*pixelstep
|
|
+ xit*pixelstep
|
|
+ byteit];
|
|
}
|
|
}
|
|
skip_left:
|
|
/* nop */;
|
|
} /* xit */
|
|
} /* yit */
|
|
}
|
|
|
|
/*
|
|
* Collapse opti_frame data down such that the data
|
|
* which occupies the bounding box sits at the start
|
|
* of the data (for convenience with ..set_rect()).
|
|
*/
|
|
destptr = opti_frame;
|
|
/*
|
|
* If can_combine, then it's safe to use our optimized
|
|
* alpha information. Otherwise, an opaque pixel became
|
|
* transparent this frame, and we'll have to use the
|
|
* actual true frame's alpha.
|
|
*/
|
|
if (can_combine)
|
|
srcptr = opti_frame;
|
|
else
|
|
srcptr = this_frame;
|
|
for (yit=bbox_top; yit<bbox_bottom; yit++)
|
|
{
|
|
for (xit=bbox_left; xit<bbox_right; xit++)
|
|
{
|
|
for (byteit=0; byteit<pixelstep; byteit++)
|
|
{
|
|
*(destptr++) = srcptr[yit*pixelstep*width +
|
|
pixelstep*xit + byteit];
|
|
}
|
|
}
|
|
}
|
|
} /* !bot frame? */
|
|
else
|
|
{
|
|
memcpy (opti_frame, this_frame, frame_sizebytes);
|
|
}
|
|
|
|
/*
|
|
*
|
|
* REMEMBER THE ANIMATION STATUS TO DELTA AGAINST NEXT TIME
|
|
*
|
|
*/
|
|
memcpy (last_frame, this_frame, frame_sizebytes);
|
|
|
|
|
|
/*
|
|
*
|
|
* PUT THIS FRAME INTO A NEW LAYER IN THE NEW IMAGE
|
|
*
|
|
*/
|
|
|
|
oldlayer_name =
|
|
gimp_drawable_get_name(layers[total_frames-(this_frame_num+1)]);
|
|
|
|
buflen = strlen(oldlayer_name) + 40;
|
|
|
|
newlayer_name = g_malloc(buflen);
|
|
|
|
remove_disposal_tag(newlayer_name, oldlayer_name);
|
|
g_free(oldlayer_name);
|
|
|
|
oldlayer_name = g_malloc(buflen);
|
|
|
|
remove_ms_tag(oldlayer_name, newlayer_name);
|
|
|
|
g_snprintf(newlayer_name, buflen, "%s(%dms)%s",
|
|
oldlayer_name, this_delay,
|
|
(this_frame_num == 0) ? "" :
|
|
can_combine ? "(combine)" : "(replace)");
|
|
|
|
g_free(oldlayer_name);
|
|
|
|
/* Empty frame! */
|
|
if (bbox_right <= bbox_left ||
|
|
bbox_bottom <= bbox_top)
|
|
{
|
|
cumulated_delay += this_delay;
|
|
|
|
g_free (newlayer_name);
|
|
|
|
oldlayer_name = gimp_drawable_get_name (last_true_frame);
|
|
|
|
buflen = strlen (oldlayer_name) + 40;
|
|
|
|
newlayer_name = g_malloc (buflen);
|
|
|
|
remove_disposal_tag (newlayer_name, oldlayer_name);
|
|
g_free (oldlayer_name);
|
|
|
|
oldlayer_name = g_malloc (buflen);
|
|
|
|
remove_ms_tag (oldlayer_name, newlayer_name);
|
|
|
|
g_snprintf (newlayer_name, buflen, "%s(%dms)%s",
|
|
oldlayer_name, cumulated_delay,
|
|
(this_frame_num == 0) ? "" :
|
|
can_combine ? "(combine)" : "(replace)");
|
|
|
|
gimp_drawable_set_name (last_true_frame, newlayer_name);
|
|
|
|
g_free (newlayer_name);
|
|
}
|
|
else
|
|
{
|
|
cumulated_delay = this_delay;
|
|
|
|
last_true_frame =
|
|
new_layer_id = gimp_layer_new (new_image_id,
|
|
newlayer_name,
|
|
bbox_right-bbox_left,
|
|
bbox_bottom-bbox_top,
|
|
drawabletype_alpha,
|
|
100.0,
|
|
GIMP_NORMAL_MODE);
|
|
g_free (newlayer_name);
|
|
|
|
gimp_image_add_layer (new_image_id, new_layer_id, 0);
|
|
|
|
drawable = gimp_drawable_get (new_layer_id);
|
|
|
|
gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0,
|
|
bbox_right-bbox_left,
|
|
bbox_bottom-bbox_top,
|
|
TRUE, FALSE);
|
|
gimp_pixel_rgn_set_rect (&pixel_rgn, opti_frame, 0, 0,
|
|
bbox_right-bbox_left,
|
|
bbox_bottom-bbox_top);
|
|
gimp_drawable_flush (drawable);
|
|
gimp_drawable_detach (drawable);
|
|
gimp_layer_translate (new_layer_id, bbox_left, bbox_top);
|
|
}
|
|
|
|
gimp_progress_update (((gdouble) this_frame_num + 1.0) /
|
|
((gdouble) total_frames));
|
|
}
|
|
}
|
|
|
|
gimp_image_undo_enable (new_image_id);
|
|
|
|
if (run_mode != GIMP_RUN_NONINTERACTIVE)
|
|
gimp_display_new (new_image_id);
|
|
|
|
g_free (rawframe);
|
|
rawframe = NULL;
|
|
|
|
g_free (last_frame);
|
|
last_frame = NULL;
|
|
|
|
g_free (this_frame);
|
|
this_frame = NULL;
|
|
|
|
g_free (opti_frame);
|
|
opti_frame = NULL;
|
|
|
|
g_free (back_frame);
|
|
back_frame = NULL;
|
|
|
|
return new_image_id;
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Util. */
|
|
|
|
static DisposeType
|
|
get_frame_disposal (guint whichframe)
|
|
{
|
|
gchar *layer_name;
|
|
DisposeType disposal;
|
|
|
|
layer_name = gimp_drawable_get_name(layers[total_frames-(whichframe+1)]);
|
|
disposal = parse_disposal_tag(layer_name);
|
|
g_free(layer_name);
|
|
|
|
return(disposal);
|
|
}
|
|
|
|
|
|
|
|
static guint32
|
|
get_frame_duration (guint whichframe)
|
|
{
|
|
gchar* layer_name;
|
|
gint duration = 0;
|
|
|
|
layer_name = gimp_drawable_get_name(layers[total_frames-(whichframe+1)]);
|
|
if (layer_name != NULL)
|
|
{
|
|
duration = parse_ms_tag(layer_name);
|
|
g_free(layer_name);
|
|
}
|
|
|
|
if (duration < 0) duration = 100; /* FIXME for default-if-not-said */
|
|
if (duration == 0) duration = 100; /* FIXME - 0-wait is nasty */
|
|
|
|
return ((guint32) duration);
|
|
}
|
|
|
|
|
|
static gboolean
|
|
is_ms_tag (const gchar *str,
|
|
gint *duration,
|
|
gint *taglength)
|
|
{
|
|
gint sum = 0;
|
|
gint offset;
|
|
gint length;
|
|
|
|
length = strlen(str);
|
|
|
|
if (str[0] != '(')
|
|
return FALSE;
|
|
|
|
offset = 1;
|
|
|
|
/* eat any spaces between open-parenthesis and number */
|
|
while ((offset<length) && (str[offset] == ' '))
|
|
offset++;
|
|
|
|
if ((offset>=length) || (!g_ascii_isdigit (str[offset])))
|
|
return 0;
|
|
|
|
do
|
|
{
|
|
sum *= 10;
|
|
sum += str[offset] - '0';
|
|
offset++;
|
|
}
|
|
while ((offset<length) && (g_ascii_isdigit (str[offset])));
|
|
|
|
if (length-offset <= 2)
|
|
return FALSE;
|
|
|
|
/* eat any spaces between number and 'ms' */
|
|
while ((offset<length) && (str[offset] == ' '))
|
|
offset++;
|
|
|
|
if ((length-offset <= 2) ||
|
|
(g_ascii_toupper (str[offset]) != 'M') ||
|
|
(g_ascii_toupper (str[offset+1]) != 'S'))
|
|
return FALSE;
|
|
|
|
offset += 2;
|
|
|
|
/* eat any spaces between 'ms' and close-parenthesis */
|
|
while ((offset<length) && (str[offset] == ' '))
|
|
offset++;
|
|
|
|
if ((length-offset < 1) || (str[offset] != ')'))
|
|
return FALSE;
|
|
|
|
offset++;
|
|
|
|
*duration = sum;
|
|
*taglength = offset;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static int
|
|
parse_ms_tag (const char *str)
|
|
{
|
|
gint i;
|
|
gint rtn;
|
|
gint dummy;
|
|
gint length;
|
|
|
|
length = strlen (str);
|
|
|
|
for (i=0; i<length; i++)
|
|
{
|
|
if (is_ms_tag (&str[i], &rtn, &dummy))
|
|
return rtn;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
static gboolean
|
|
is_disposal_tag (const gchar *str,
|
|
DisposeType *disposal,
|
|
gint *taglength)
|
|
{
|
|
if (strlen (str) != 9)
|
|
return FALSE;
|
|
|
|
if (strncmp (str, "(combine)", 9) == 0)
|
|
{
|
|
*taglength = 9;
|
|
*disposal = DISPOSE_COMBINE;
|
|
return TRUE;
|
|
}
|
|
else if (strncmp (str, "(replace)", 9) == 0)
|
|
{
|
|
*taglength = 9;
|
|
*disposal = DISPOSE_REPLACE;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static DisposeType
|
|
parse_disposal_tag (const gchar *str)
|
|
{
|
|
DisposeType rtn;
|
|
gint i, dummy;
|
|
gint length;
|
|
|
|
length = strlen(str);
|
|
|
|
for (i=0; i<length; i++)
|
|
{
|
|
if (is_disposal_tag (&str[i], &rtn, &dummy))
|
|
{
|
|
return rtn;
|
|
}
|
|
}
|
|
|
|
return DISPOSE_UNDEFINED; /* FIXME */
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
remove_disposal_tag (gchar *dest,
|
|
gchar *src)
|
|
{
|
|
gint offset = 0;
|
|
gint destoffset = 0;
|
|
gint length;
|
|
int taglength;
|
|
DisposeType dummy;
|
|
|
|
length = strlen(src);
|
|
|
|
strcpy(dest, src);
|
|
|
|
while (offset<=length)
|
|
{
|
|
if (is_disposal_tag(&src[offset], &dummy, &taglength))
|
|
{
|
|
offset += taglength;
|
|
}
|
|
dest[destoffset] = src[offset];
|
|
destoffset++;
|
|
offset++;
|
|
}
|
|
|
|
dest[offset] = '\0';
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
remove_ms_tag (gchar *dest,
|
|
gchar *src)
|
|
{
|
|
gint offset = 0;
|
|
gint destoffset = 0;
|
|
gint length;
|
|
gint taglength;
|
|
gint dummy;
|
|
|
|
length = strlen(src);
|
|
|
|
strcpy(dest, src);
|
|
|
|
while (offset<=length)
|
|
{
|
|
if (is_ms_tag(&src[offset], &dummy, &taglength))
|
|
{
|
|
offset += taglength;
|
|
}
|
|
dest[destoffset] = src[offset];
|
|
destoffset++;
|
|
offset++;
|
|
}
|
|
|
|
dest[offset] = '\0';
|
|
}
|