git.sesse.net Git - casparcg/blob - modules/image/producer/image_producer.cpp

   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 #include "image_producer.h"
  23
  24 #include "../util/image_loader.h"
  25
  26 #include <core/video_format.h>
  27
  28 #include <core/producer/frame_producer.h>
  29 #include <core/frame/frame.h>
  30 #include <core/frame/draw_frame.h>
  31 #include <core/frame/frame_factory.h>
  32 #include <core/frame/pixel_format.h>
  33 #include <core/monitor/monitor.h>
  34
  35 #include <common/env.h>
  36 #include <common/log.h>
  37 #include <common/array.h>
  38
  39 #include <boost/assign.hpp>
  40 #include <boost/filesystem.hpp>
  41 #include <boost/property_tree/ptree.hpp>
  42
  43 #include <algorithm>
  44
  45 using namespace boost::assign;
  46
  47 namespace caspar { namespace image {
  48
  49 struct image_producer : public core::frame_producer_base
  50 {
  51         monitor::basic_subject  event_subject_;
  52         const std::wstring              filename_;
  53         core::draw_frame                frame_;
  54         core::constraints               constraints_;
  55
  56         explicit image_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filename)
  57                 : filename_(filename)
  58                 , frame_(core::draw_frame::empty())
  59         {
  60                 auto bitmap = load_image(filename_);
  61                 FreeImage_FlipVertical(bitmap.get());
  62
  63                 core::pixel_format_desc desc = core::pixel_format::bgra;
  64                 auto width = FreeImage_GetWidth(bitmap.get());
  65                 auto height = FreeImage_GetHeight(bitmap.get());
  66                 desc.planes.push_back(core::pixel_format_desc::plane(width, height, 4));
  67                 auto frame = frame_factory->create_frame(this, desc);
  68
  69                 std::copy_n(FreeImage_GetBits(bitmap.get()), frame.image_data(0).size(), frame.image_data(0).begin());
  70                 frame_ = core::draw_frame(std::move(frame));
  71                 constraints_.width.set(width);
  72                 constraints_.height.set(height);
  73
  74                 CASPAR_LOG(info) << print() << L" Initialized";
  75         }
  76
  77         // frame_producer
  78
  79         core::draw_frame receive_impl() override
  80         {
  81                 event_subject_ << monitor::event("file/path") % filename_;
  82
  83                 return frame_;
  84         }
  85
  86         core::constraints& pixel_constraints() override
  87         {
  88                 return constraints_;
  89         }
  90
  91         std::wstring print() const override
  92         {
  93                 return L"image_producer[" + filename_ + L"]";
  94         }
  95
  96         std::wstring name() const override
  97         {
  98                 return L"image";
  99         }
 100
 101         boost::property_tree::wptree info() const override
 102         {
 103                 boost::property_tree::wptree info;
 104                 info.add(L"type", L"image");
 105                 info.add(L"filename", filename_);
 106                 return info;
 107         }
 108
 109         void subscribe(const monitor::observable::observer_ptr& o) override
 110         {
 111                 return event_subject_.subscribe(o);
 112         }
 113
 114         void unsubscribe(const monitor::observable::observer_ptr& o) override
 115         {
 116                 return event_subject_.unsubscribe(o);
 117         }
 118 };
 119
 120 spl::shared_ptr<core::frame_producer> create_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::vector<std::wstring>& params)
 121 {
 122         static const std::vector<std::wstring> extensions = list_of(L".png")(L".tga")(L".bmp")(L".jpg")(L".jpeg")(L".gif")(L".tiff")(L".tif")(L".jp2")(L".jpx")(L".j2k")(L".j2c");
 123         std::wstring filename = env::media_folder() + L"\\" + params[0];
 124
 125         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool
 126                 {
 127                         return boost::filesystem::is_regular_file(boost::filesystem::path(filename).replace_extension(ex));
 128                 });
 129
 130         if(ext == extensions.end())
 131                 return core::frame_producer::empty();
 132
 133         return spl::make_shared<image_producer>(frame_factory, filename + *ext);
 134 }
 135
 136
 137 }}