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/* gap_drawable_vref_parasite.c
*
* This module handles gap specific video reference drawable parasites.
* Such parasites are typically used to identify extracted video file frames
* for usage in filtermacro as persistent drawable_id references at recording time of filtermacros.
*
* The gap player does attach such vref drawable parasites (as temporary parasites)
* when extracting a videoframe at original size (by click on the preview)
*
* Copyright (C) 2008 Wolfgang Hofer <hof@gimp.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <string.h>
#include "gap_drawable_vref_parasite.h"
extern int gap_debug; /* ==0 ... dont print debug infos */
/* ------------------------------------------
* gap_dvref_debug_print_GapDrawableVideoRef
* ------------------------------------------
*/
void
gap_dvref_debug_print_GapDrawableVideoRef(GapDrawableVideoRef *dvref)
{
if(gap_debug)
{
if(dvref == NULL)
{
printf("GapDrawableVideoRef: dvref:(null)\n");
return;
}
if(dvref->videofile == NULL)
{
printf("GapDrawableVideoRef: videofile:(null) frame:%d seltrack:%d (%s)\n"
,dvref->para.framenr
,dvref->para.seltrack
,&dvref->para.preferred_decoder[0]
);
return;
}
printf("GapDrawableVideoRef: videofile:%s frame:%d seltrack:%d (%s)\n"
,dvref->videofile
,dvref->para.framenr
,dvref->para.seltrack
,&dvref->para.preferred_decoder[0]
);
}
} /* end gap_dvref_debug_print_GapDrawableVideoRef */
/* -------------------
* gap_dvref_free
* -------------------
*/
void
gap_dvref_free(GapDrawableVideoRef **dvref_ptr)
{
GapDrawableVideoRef *dvref;
dvref = *dvref_ptr;
if (dvref)
{
if(dvref->videofile)
{
g_free(dvref->videofile);
}
g_free(dvref);
}
*dvref_ptr = NULL;
} /* end gap_dvref_free */
/* ---------------------------------------------------
* gap_dvref_get_drawable_video_reference_via_parasite
* ---------------------------------------------------
* return Gap drawable video reference parasite if such a parasite is atached to the specified drawable_id
* oterwise return NULL;
*/
GapDrawableVideoRef *
gap_dvref_get_drawable_video_reference_via_parasite(gint32 drawable_id)
{
GapDrawableVideoRef *dvref;
GimpParasite *l_parasite;
dvref = NULL;
l_parasite = gimp_drawable_parasite_find(drawable_id, GAP_DRAWABLE_VIDEOFILE_PARASITE_NAME);
if(l_parasite)
{
if(gap_debug)
{
printf("gap_dvref_get_drawable_video_reference_via_parasite: size:%d data:%s\n"
,l_parasite->size
,(char *)l_parasite->data
);
}
dvref = g_new(GapDrawableVideoRef, 1);
dvref->videofile = g_malloc0(l_parasite->size +1);
memcpy(dvref->videofile, l_parasite->data, l_parasite->size);
gimp_parasite_free(l_parasite);
l_parasite = gimp_drawable_parasite_find(drawable_id, GAP_DRAWABLE_VIDEOPARAMS_PARASITE_NAME);
if(l_parasite)
{
memcpy(&dvref->para, l_parasite->data, sizeof(GapDrawableVideoParasite));
gimp_parasite_free(l_parasite);
if(gap_debug)
{
printf("gap_dvref_get_drawable_video_reference_via_parasite: dvref PARASITES OK\n");
gap_dvref_debug_print_GapDrawableVideoRef(dvref);
}
return (dvref);
}
}
if(gap_debug)
{
printf("gap_dvref_get_drawable_video_reference_via_parasite: NO dvref parasites found.\n");
}
return (NULL);
} /* end gap_dvref_get_drawable_video_reference_via_parasite */
/* --------------------------------------
* gap_dvref_assign_videoref_parasites
* --------------------------------------
* if gpp->drawable_vref contains vaild video reference
* then
* assign video reference parasites to the specified drawable_id (typically this is a layer.)
* (one parasite contains only the videfilename and has variable length,
* the other contains framenumber and other information that was used to fetch
* the frame from the videofile).
*
* the video reference is typically set on successful fetch
* from a video file. (and reset on all other types of frame fetches)
*
+ TODO: query gimprc parameter that can configures using persitent drawable_videoref_parasites.
* (default shall be temporary parasites)
*/
void
gap_dvref_assign_videoref_parasites(GapDrawableVideoRef *dvref, gint32 drawable_id)
{
GimpParasite *l_parasite;
if(gap_debug)
{
printf("gap_assign_drawable_videoref_parasite: START\n");
gap_dvref_debug_print_GapDrawableVideoRef(dvref);
}
if(dvref->videofile == NULL)
{
/* no viedo reference available for the current frame */
return;
}
l_parasite = gimp_parasite_new(GAP_DRAWABLE_VIDEOFILE_PARASITE_NAME
,0 /* GIMP_PARASITE_PERSISTENT 0 for non persistent */
,1 + strlen(dvref->videofile)
,dvref->videofile /* parasite data */
);
if(l_parasite)
{
gimp_drawable_parasite_attach(drawable_id, l_parasite);
gimp_parasite_free(l_parasite);
}
l_parasite = gimp_parasite_new(GAP_DRAWABLE_VIDEOPARAMS_PARASITE_NAME
,0 /* GIMP_PARASITE_PERSISTENT */
,sizeof(GapDrawableVideoParasite)
,&dvref->para /* parasite data */
);
if(l_parasite)
{
gimp_drawable_parasite_attach(drawable_id, l_parasite);
gimp_parasite_free(l_parasite);
}
} /* end gap_dvref_assign_videoref_parasites */
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