git.sesse.net Git - casparcg/blob - core/producer/cg_proxy.h

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #pragma once
  23
  24 #include "frame_producer.h"
  25
  26 #include <common/memory.h>
  27
  28 #include <string>
  29 #include <functional>
  30 #include <set>
  31
  32 #include <boost/noncopyable.hpp>
  33
  34 namespace caspar { namespace core {
  35
  36 class cg_proxy
  37 {
  38 public:
  39         static const unsigned int DEFAULT_LAYER = 9999;
  40
  41         virtual ~cg_proxy() {}
  42
  43         virtual void add(int layer, const std::wstring& template_name,  bool play_on_load, const std::wstring& start_from_label = L"", const std::wstring& data = L"") = 0;
  44         virtual void remove(int layer) = 0;
  45         virtual void play(int layer) = 0;
  46         virtual void stop(int layer, unsigned int mix_out_duration) = 0;
  47         virtual void next(int layer) = 0;
  48         virtual void update(int layer, const std::wstring& data) = 0;
  49         virtual std::wstring invoke(int layer, const std::wstring& label) = 0;
  50         virtual std::wstring description(int layer) = 0;
  51         virtual std::wstring template_host_info() = 0;
  52
  53         static const spl::shared_ptr<cg_proxy>& empty();
  54 };
  55
  56 typedef std::function<spl::shared_ptr<cg_proxy>(
  57                 const spl::shared_ptr<frame_producer>& producer
  58         )> cg_proxy_factory;
  59 typedef std::function<spl::shared_ptr<frame_producer>(
  60                 const spl::shared_ptr<class frame_factory>& factory,
  61                 const video_format_desc& format_desc,
  62                 const std::wstring& filename
  63         )> cg_producer_factory;
  64 typedef std::function<std::string(const std::wstring& filename)> meta_info_extractor;
  65
  66 class cg_producer_registry : boost::noncopyable
  67 {
  68 public:
  69         cg_producer_registry();
  70
  71         void register_cg_producer(
  72                         std::wstring cg_producer_name,
  73                         std::set<std::wstring> file_extensions,
  74                         meta_info_extractor info_extractor,
  75                         cg_proxy_factory proxy_factory,
  76                         cg_producer_factory producer_factory,
  77                         bool reusable_producer_instance);
  78
  79         spl::shared_ptr<frame_producer> create_producer(
  80                         const spl::shared_ptr<class video_channel>& video_channel,
  81                         const std::wstring& filename) const;
  82         spl::shared_ptr<cg_proxy> get_proxy(
  83                         const spl::shared_ptr<frame_producer>& producer) const;
  84         spl::shared_ptr<cg_proxy> get_proxy(
  85                         const spl::shared_ptr<class video_channel>& video_channel,
  86                         int render_layer) const;
  87         spl::shared_ptr<cg_proxy> get_or_create_proxy(
  88                         const spl::shared_ptr<class video_channel>& video_channel,
  89                         int render_layer,
  90                         const std::wstring& filename) const;
  91         std::string read_meta_info(const std::wstring& filename) const;
  92         bool is_cg_extension(const std::wstring& extension) const;
  93 private:
  94         struct impl;
  95         spl::shared_ptr<impl> impl_;
  96 };
  97
  98
  99 }}