git.sesse.net Git - casparcg/blob - modules/image/consumer/image_consumer.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_consumer.h"
  23
  24 #include <common/except.h>
  25 #include <common/env.h>
  26 #include <common/log.h>
  27 #include <common/utf.h>
  28 #include <common/array.h>
  29 #include <common/future.h>
  30 #include <common/os/general_protection_fault.h>
  31
  32 #include <core/consumer/frame_consumer.h>
  33 #include <core/video_format.h>
  34 #include <core/frame/frame.h>
  35 #include <core/help/help_sink.h>
  36 #include <core/help/help_repository.h>
  37
  38 #include <boost/date_time/posix_time/posix_time.hpp>
  39 #include <boost/thread.hpp>
  40 #include <boost/algorithm/string.hpp>
  41
  42 #include <tbb/concurrent_queue.h>
  43
  44 #include <FreeImage.h>
  45
  46 #include <vector>
  47 #include <algorithm>
  48
  49 #include "../util/image_view.h"
  50
  51 namespace caspar { namespace image {
  52
  53 void write_cropped_png(
  54                 const core::const_frame& frame,
  55                 const core::video_format_desc& format_desc,
  56                 const boost::filesystem::path& output_file,
  57                 int width,
  58                 int height)
  59 {
  60         auto bitmap = std::shared_ptr<FIBITMAP>(FreeImage_Allocate(width, height, 32), FreeImage_Unload);
  61         image_view<bgra_pixel> destination_view(FreeImage_GetBits(bitmap.get()), width, height);
  62         image_view<bgra_pixel> complete_frame(const_cast<uint8_t*>(frame.image_data().begin()), format_desc.width, format_desc.height);
  63         auto thumbnail_view = complete_frame.subview(0, 0, width, height);
  64
  65         std::copy(thumbnail_view.begin(), thumbnail_view.end(), destination_view.begin());
  66         FreeImage_FlipVertical(bitmap.get());
  67 #ifdef WIN32
  68         FreeImage_SaveU(FIF_PNG, bitmap.get(), output_file.wstring().c_str(), 0);
  69 #else
  70         FreeImage_Save(FIF_PNG, bitmap.get(), u8(output_file.wstring()).c_str(), 0);
  71 #endif
  72 }
  73
  74 struct image_consumer : public core::frame_consumer
  75 {
  76         core::monitor::subject  monitor_subject_;
  77         std::wstring                    filename_;
  78 public:
  79
  80         // frame_consumer
  81
  82         image_consumer(const std::wstring& filename)
  83                 : filename_(filename)
  84         {
  85         }
  86
  87         void initialize(const core::video_format_desc&, const core::audio_channel_layout&, int) override
  88         {
  89         }
  90
  91         int64_t presentation_frame_age_millis() const override
  92         {
  93                 return 0;
  94         }
  95
  96         std::future<bool> send(core::const_frame frame) override
  97         {
  98                 auto filename = filename_;
  99
 100                 boost::thread async([frame, filename]
 101                 {
 102                         ensure_gpf_handler_installed_for_thread("image-consumer");
 103
 104                         try
 105                         {
 106                                 auto filename2 = filename;
 107
 108                                 if (filename2.empty())
 109                                         filename2 = env::media_folder() +  boost::posix_time::to_iso_wstring(boost::posix_time::second_clock::local_time()) + L".png";
 110                                 else
 111                                         filename2 = env::media_folder() + filename2 + L".png";
 112
 113                                 auto bitmap = std::shared_ptr<FIBITMAP>(FreeImage_Allocate(static_cast<int>(frame.width()), static_cast<int>(frame.height()), 32), FreeImage_Unload);
 114                                 std::memcpy(FreeImage_GetBits(bitmap.get()), frame.image_data().begin(), frame.image_data().size());
 115                                 FreeImage_FlipVertical(bitmap.get());
 116 #ifdef WIN32
 117                                 FreeImage_SaveU(FIF_PNG, bitmap.get(), filename2.c_str(), 0);
 118 #else
 119                                 FreeImage_Save(FIF_PNG, bitmap.get(), u8(filename2).c_str(), 0);
 120 #endif
 121                         }
 122                         catch(...)
 123                         {
 124                                 CASPAR_LOG_CURRENT_EXCEPTION();
 125                         }
 126                 });
 127                 async.detach();
 128
 129                 return make_ready_future(false);
 130         }
 131
 132         std::wstring print() const override
 133         {
 134                 return L"image[]";
 135         }
 136
 137         std::wstring name() const override
 138         {
 139                 return L"image";
 140         }
 141
 142         boost::property_tree::wptree info() const override
 143         {
 144                 boost::property_tree::wptree info;
 145                 info.add(L"type", L"image");
 146                 return info;
 147         }
 148
 149         int buffer_depth() const override
 150         {
 151                 return -1;
 152         }
 153
 154         int index() const override
 155         {
 156                 return 100;
 157         }
 158
 159         core::monitor::subject& monitor_output()
 160         {
 161                 return monitor_subject_;
 162         }
 163 };
 164
 165 void describe_consumer(core::help_sink& sink, const core::help_repository& repo)
 166 {
 167         sink.short_description(L"Writes a single PNG snapshot of a video channel.");
 168         sink.syntax(L"IMAGE {[filename:string]|yyyyMMddTHHmmss}");
 169         sink.para()
 170                 ->text(L"Writes a single PNG snapshot of a video channel. ")->code(L".png")->text(L" will be appended to ")
 171                 ->code(L"filename")->text(L". The PNG image will be stored under the ")->code(L"media")->text(L" folder.");
 172         sink.para()->text(L"Examples:");
 173         sink.example(L">> ADD 1 IMAGE screenshot", L"creating media/screenshot.png");
 174         sink.example(L">> ADD 1 IMAGE", L"creating media/20130228T210946.png if the current time is 2013-02-28 21:09:46.");
 175 }
 176
 177 spl::shared_ptr<core::frame_consumer> create_consumer(
 178                 const std::vector<std::wstring>& params, core::interaction_sink*, std::vector<spl::shared_ptr<core::video_channel>> channels)
 179 {
 180         if (params.size() < 1 || !boost::iequals(params.at(0), L"IMAGE"))
 181                 return core::frame_consumer::empty();
 182
 183         std::wstring filename;
 184
 185         if (params.size() > 1)
 186                 filename = params.at(1);
 187
 188         return spl::make_shared<image_consumer>(filename);
 189 }
 190
 191 }}