1 /* === S Y N F I G ========================================================= */
2 /*! \file target.cpp
3 ** \brief Target Class Implementation
4 **
5 ** $Id$
6 **
7 ** \legal
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2010 Diego Barrios Romero
10 **
11 ** This package is free software; you can redistribute it and/or
12 ** modify it under the terms of the GNU General Public License as
13 ** published by the Free Software Foundation; either version 2 of
14 ** the License, or (at your option) any later version.
15 **
16 ** This package is distributed in the hope that it will be useful,
17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ** General Public License for more details.
20 ** \endlegal
21 */
22 /* ========================================================================= */
23
24 /* === H E A D E R S ======================================================= */
25
26 #ifdef HAVE_CONFIG_H
27 # include <config.h>
28 #endif
29
30 #include "target.h"
31 #include "string.h"
32 #include "canvas.h"
33 #include "target_null.h"
34 #include "target_null_tile.h"
35 #include "targetparam.h"
36
37 using namespace synfig;
38 using namespace etl;
39 using namespace std;
40
41 synfig::Target::Book* synfig::Target::book_;
42 synfig::Target::ExtBook* synfig::Target::ext_book_;
43
44 static synfig::Gamma* default_gamma_;
45
46 /* === P R O C E D U R E S ================================================= */
47
48 bool
subsys_init()49 Target::subsys_init()
50 {
51 book_=new synfig::Target::Book();
52 ext_book_=new synfig::Target::ExtBook();
53 //! \todo Do not hard core gamma to 2.2
54 default_gamma_=new synfig::Gamma(1.0/2.2);
55
56 // At least one target must be available.
57 book()["null"].factory =
58 reinterpret_cast<synfig::Target::Factory>(&Target_Null::create);
59 book()["null"].filename = "null";
60 book()["null"].target_param = TargetParam();
61 ext_book()["null"]="null";
62
63 book()["null-tile"].factory =
64 reinterpret_cast<synfig::Target::Factory>(&Target_Null_Tile::create);
65 book()["null-tile"].filename = "null-tile";
66 book()["null-tile"].target_param = TargetParam();
67 ext_book()["null-tile"]="null-tile";
68
69 return true;
70 }
71
72 bool
subsys_stop()73 Target::subsys_stop()
74 {
75 delete book_;
76 delete ext_book_;
77 delete default_gamma_;
78 return true;
79 }
80
81 Target::Book&
book()82 Target::book()
83 {
84 return *book_;
85 }
86
87 Target::ExtBook&
ext_book()88 Target::ext_book()
89 {
90 return *ext_book_;
91 }
92
93
94 /* === M E T H O D S ======================================================= */
95
Target()96 Target::Target():
97 quality_(4),
98 gamma_(*default_gamma_),
99 alpha_mode(TARGET_ALPHA_MODE_KEEP),
100 avoid_time_sync_(false),
101 curr_frame_(0)
102 {
103 }
104
105 void
set_canvas(etl::handle<Canvas> c)106 synfig::Target::set_canvas(etl::handle<Canvas> c)
107 {
108 canvas=c;
109 RendDesc desc=canvas->rend_desc();
110 set_rend_desc(&desc);
111 }
112
113
114 Target::Handle
create(const String & name,const String & filename,synfig::TargetParam params)115 Target::create(const String &name, const String &filename,
116 synfig::TargetParam params)
117 {
118 if(!book().count(name))
119 return handle<Target>();
120
121 return Target::Handle(book()[name].factory(filename.c_str(), params));
122 }
123
124 int
next_frame(Time & time)125 Target::next_frame(Time& time)
126 {
127 int
128 total_frames(1),
129 frame_start(0),
130 frame_end(0);
131 Time
132 time_start(0),
133 time_end(0);
134
135 frame_start=desc.get_frame_start();
136 frame_end=desc.get_frame_end();
137 time_start=desc.get_time_start();
138 time_end=desc.get_time_end();
139 // TODO: Add option to exclude last frame
140 // If user wants to recover the last buggy behavior then
141 // expose this option to the interface using the target params.
142 // At the moment it is set to false.
143 bool exclude_last_frame(false);
144 // Calculate the number of frames
145 total_frames=frame_end-frame_start+(exclude_last_frame?0:1);
146 if(total_frames<=0)total_frames=1;
147
148 if(total_frames == 1)
149 {
150 time=time_start;
151 }
152 else
153 {
154 time=(time_end-time_start)*curr_frame_/(total_frames-(exclude_last_frame?0:1))+time_start;
155 }
156
157 // synfig::info("before curr_frame_: %d",curr_frame_);
158 curr_frame_++;
159
160 // synfig::info("before curr_frame_: %d",curr_frame_);
161 // synfig::info("total_frames: %d",total_frames);
162 // synfig::info("time_end: %s",time_end.get_string().c_str());
163 // synfig::info("time_start: %s",time_start.get_string().c_str());
164 // synfig::info("time: %s",time.get_string().c_str());
165 // synfig::info("remaining frames %d", total_frames-curr_frame_);
166
167 return total_frames- curr_frame_;
168 }
169
170