]> git.sesse.net Git - casparcg/blob - core/producer/frame_producer.h
2.0. frame_producer: Removed unnecessary function.
[casparcg] / core / producer / frame_producer.h
1 /*\r
2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
3 *\r
4 *  This file is part of CasparCG.\r
5 *\r
6 *    CasparCG is free software: you can redistribute it and/or modify\r
7 *    it under the terms of the GNU General Public License as published by\r
8 *    the Free Software Foundation, either version 3 of the License, or\r
9 *    (at your option) any later version.\r
10 *\r
11 *    CasparCG is distributed in the hope that it will be useful,\r
12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of\r
13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
14 *    GNU General Public License for more details.\r
15 \r
16 *    You should have received a copy of the GNU General Public License\r
17 *    along with CasparCG.  If not, see <http://www.gnu.org/licenses/>.\r
18 *\r
19 */\r
20 #pragma once\r
21 \r
22 #include "frame/frame_factory.h"\r
23 \r
24 #include <common/memory/safe_ptr.h>\r
25 \r
26 #include <boost/noncopyable.hpp>\r
27 \r
28 #include <functional>\r
29 #include <string>\r
30 #include <vector>\r
31 \r
32 namespace caspar { namespace core {\r
33 \r
34 class basic_frame;\r
35 \r
36 class frame_producer : boost::noncopyable\r
37 {\r
38 public:\r
39         frame_producer();\r
40         virtual ~frame_producer(){}     \r
41 \r
42         virtual std::wstring print() const = 0; // nothrow\r
43 \r
44         virtual void param(const std::wstring&){}\r
45 \r
46         virtual safe_ptr<frame_producer> get_following_producer() const {return frame_producer::empty();}  // nothrow\r
47         virtual void set_leading_producer(const safe_ptr<frame_producer>&) {}  // nothrow\r
48                 \r
49         virtual int64_t nb_frames() const {return 0;}\r
50 \r
51         virtual safe_ptr<core::basic_frame> last_frame() const {return last_frame_;}\r
52 \r
53         static const safe_ptr<frame_producer>& empty(); // nothrow\r
54         \r
55 private:\r
56         friend safe_ptr<basic_frame> receive(const safe_ptr<frame_producer>& producer);\r
57 \r
58         virtual safe_ptr<basic_frame> receive() = 0;\r
59 \r
60         safe_ptr<basic_frame> receive_save_last();\r
61 \r
62         safe_ptr<core::basic_frame> last_frame_;\r
63 };\r
64 \r
65 safe_ptr<basic_frame> receive(const safe_ptr<frame_producer>& producer);\r
66 safe_ptr<basic_frame> receive_and_follow(safe_ptr<frame_producer>& producer);\r
67 \r
68 typedef std::function<safe_ptr<core::frame_producer>(const safe_ptr<frame_factory>&, const std::vector<std::wstring>&)> producer_factory_t;\r
69 void register_producer_factory(const producer_factory_t& factory); // Not thread-safe.\r
70 safe_ptr<core::frame_producer> create_producer(const safe_ptr<frame_factory>&, const std::vector<std::wstring>& params);\r
71 \r
72 \r
73 }}\r