git.sesse.net Git - casparcg/blob - modules/newtek/consumer/newtek_ivga_consumer.cpp

   1 /*
   2 * Copyright 2013 NewTek
   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, ronag@live.com
  20 */
  21
  22 #include "../StdAfx.h"
  23
  24 #include "newtek_ivga_consumer.h"
  25
  26 #include <core/consumer/frame_consumer.h>
  27 #include <core/video_format.h>
  28 #include <core/frame/frame.h>
  29 #include <core/frame/audio_channel_layout.h>
  30 #include <core/mixer/audio/audio_util.h>
  31 #include <core/monitor/monitor.h>
  32 #include <core/help/help_sink.h>
  33 #include <core/help/help_repository.h>
  34
  35 #include <common/assert.h>
  36 #include <common/executor.h>
  37 #include <common/diagnostics/graph.h>
  38 #include <common/timer.h>
  39 #include <common/param.h>
  40
  41 #include <boost/algorithm/string.hpp>
  42 #include <boost/timer.hpp>
  43 #include <boost/property_tree/ptree.hpp>
  44
  45 #include <tbb/atomic.h>
  46
  47 #include "../util/air_send.h"
  48
  49 namespace caspar { namespace newtek {
  50
  51 struct newtek_ivga_consumer : public core::frame_consumer
  52 {
  53         core::monitor::subject                          monitor_subject_;
  54         std::shared_ptr<void>                           air_send_;
  55         core::video_format_desc                         format_desc_;
  56         core::audio_channel_layout                      channel_layout_         = core::audio_channel_layout::invalid();
  57         executor                                                        executor_;
  58         tbb::atomic<bool>                                       connected_;
  59         spl::shared_ptr<diagnostics::graph>     graph_;
  60         timer                                                           tick_timer_;
  61         timer                                                           frame_timer_;
  62
  63 public:
  64
  65         newtek_ivga_consumer()
  66                 : executor_(print())
  67         {
  68                 if (!airsend::is_available())
  69                         CASPAR_THROW_EXCEPTION(not_supported() << msg_info(airsend::dll_name() + L" not available"));
  70
  71                 connected_ = false;
  72
  73                 graph_->set_text(print());
  74                 graph_->set_color("frame-time", diagnostics::color(0.5f, 1.0f, 0.2f));
  75                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));
  76                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
  77                 diagnostics::register_graph(graph_);
  78         }
  79
  80         ~newtek_ivga_consumer()
  81         {
  82         }
  83
  84         // frame_consumer
  85
  86         virtual void initialize(
  87                         const core::video_format_desc& format_desc,
  88                         const core::audio_channel_layout& channel_layout,
  89                         int channel_index) override
  90         {
  91                 air_send_.reset(
  92                         airsend::create(
  93                                 format_desc.width,
  94                                 format_desc.height,
  95                                 format_desc.time_scale,
  96                                 format_desc.duration,
  97                                 format_desc.field_mode == core::field_mode::progressive,
  98                                 static_cast<float>(format_desc.square_width) / static_cast<float>(format_desc.square_height),
  99                                 true,
 100                                 channel_layout.num_channels,
 101                                 format_desc.audio_sample_rate),
 102                                 airsend::destroy);
 103
 104                 CASPAR_VERIFY(air_send_);
 105
 106                 format_desc_    = format_desc;
 107                 channel_layout_ = channel_layout;
 108         }
 109
 110         std::future<bool> schedule_send(core::const_frame frame)
 111         {
 112                 return executor_.begin_invoke([=]() -> bool
 113                 {
 114                         graph_->set_value("tick-time", tick_timer_.elapsed() * format_desc_.fps * 0.5);
 115                         tick_timer_.restart();
 116                         frame_timer_.restart();
 117
 118                         // AUDIO
 119
 120                         auto audio_buffer = core::audio_32_to_16(frame.audio_data());
 121
 122                         airsend::add_audio(air_send_.get(), audio_buffer.data(), static_cast<int>(audio_buffer.size()) / channel_layout_.num_channels);
 123
 124                         // VIDEO
 125
 126                         connected_ = airsend::add_frame_bgra(air_send_.get(), frame.image_data().begin());
 127
 128                         graph_->set_text(print());
 129                         graph_->set_value("frame-time", frame_timer_.elapsed() * format_desc_.fps * 0.5);
 130
 131                         return true;
 132                 });
 133         }
 134
 135         virtual std::future<bool> send(core::const_frame frame) override
 136         {
 137                 CASPAR_VERIFY(format_desc_.height * format_desc_.width * 4 == frame.image_data().size());
 138
 139                 if (executor_.size() > 0 || executor_.is_currently_in_task())
 140                 {
 141                         graph_->set_tag(diagnostics::tag_severity::WARNING, "dropped-frame");
 142
 143                         return make_ready_future(true);
 144                 }
 145
 146                 schedule_send(std::move(frame));
 147
 148                 return make_ready_future(true);
 149         }
 150
 151         virtual core::monitor::subject& monitor_output() override
 152         {
 153                 return monitor_subject_;
 154         }
 155
 156         virtual std::wstring print() const override
 157         {
 158                 return connected_ ?
 159                                 L"newtek-ivga[connected]" : L"newtek-ivga[not connected]";
 160         }
 161
 162         virtual std::wstring name() const override
 163         {
 164                 return L"newtek-ivga";
 165         }
 166
 167         virtual boost::property_tree::wptree info() const override
 168         {
 169                 boost::property_tree::wptree info;
 170                 info.add(L"type", L"newtek-ivga-consumer");
 171                 info.add(L"connected", connected_ ? L"true" : L"false");
 172                 return info;
 173         }
 174
 175         virtual int buffer_depth() const override
 176         {
 177                 return -1;
 178         }
 179
 180         virtual int index() const override
 181         {
 182                 return 900;
 183         }
 184
 185         virtual int64_t presentation_frame_age_millis() const override
 186         {
 187                 return 0;
 188         }
 189
 190         virtual bool has_synchronization_clock() const override
 191         {
 192                 return false;
 193         }
 194 };
 195
 196 void describe_ivga_consumer(core::help_sink& sink, const core::help_repository& repo)
 197 {
 198         sink.short_description(L"A consumer for streaming a channel to a NewTek TriCaster via iVGA/AirSend protocol.");
 199         sink.syntax(L"NEWTEK_IVGA");
 200         sink.para()->text(L"A consumer for streaming a channel to a NewTek TriCaster via iVGA/AirSend protocol.");
 201         sink.para()->text(L"Examples:");
 202         sink.example(L">> ADD 1 NEWTEK_IVGA");
 203 }
 204
 205 spl::shared_ptr<core::frame_consumer> create_ivga_consumer(const std::vector<std::wstring>& params, core::interaction_sink*)
 206 {
 207         if (params.size() < 1 || !boost::iequals(params.at(0), L"NEWTEK_IVGA"))
 208                 return core::frame_consumer::empty();
 209
 210         return spl::make_shared<newtek_ivga_consumer>();
 211 }
 212
 213 spl::shared_ptr<core::frame_consumer> create_preconfigured_ivga_consumer(const boost::property_tree::wptree& ptree, core::interaction_sink*)
 214 {
 215         return spl::make_shared<newtek_ivga_consumer>();
 216 }
 217
 218 }}