git.sesse.net Git - casparcg/blob - modules/ogl/consumer/ogl_consumer.cpp

   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 \r
  21 #define NOMINMAX\r
  22 \r
  23 #include <windows.h>\r
  24 #include <Glee.h>\r
  25 #include <SFML/Window.hpp>\r
  26 \r
  27 #include "ogl_consumer.h"\r
  28 \r
  29 #include <core/video_format.h>\r
  30 #include <core/consumer/frame/read_frame.h>\r
  31 \r
  32 #include <common/gl/gl_check.h>\r
  33 #include <common/concurrency/executor.h>\r
  34 #include <common/memory/safe_ptr.h>\r
  35 #include <common/diagnostics/graph.h>\r
  36 #include <common/utility/timer.h>\r
  37 \r
  38 #include <boost/thread.hpp>\r
  39 \r
  40 #include <algorithm>\r
  41 #include <array>\r
  42 \r
  43 namespace caspar {\r
  44 \r
  45 struct ogl_consumer::implementation : boost::noncopyable\r
  46 {               \r
  47         timer clock_;\r
  48         printer parent_printer_;\r
  49         boost::unique_future<void> active_;\r
  50 \r
  51         float wratio_;\r
  52         float hratio_;\r
  53         \r
  54         float wSize_;\r
  55         float hSize_;\r
  56 \r
  57         GLuint                            texture_;\r
  58         std::array<GLuint, 2> pbos_;\r
  59 \r
  60         const bool windowed_;\r
  61         unsigned int screen_width_;\r
  62         unsigned int screen_height_;\r
  63         unsigned int screen_x_;\r
  64         unsigned int screen_y_;\r
  65         const unsigned int screen_index_;\r
  66                                 \r
  67         const stretch stretch_;\r
  68         core::video_format_desc format_desc_;\r
  69         \r
  70         sf::Window window_;\r
  71         \r
  72         safe_ptr<diagnostics::graph> graph_;\r
  73         timer perf_timer_;\r
  74 \r
  75         executor executor_;\r
  76 public:\r
  77         implementation(unsigned int screen_index, stretch stretch, bool windowed) \r
  78                 : stretch_(stretch)\r
  79                 , windowed_(windowed)\r
  80                 , texture_(0)\r
  81                 , screen_x_(0)\r
  82                 , screen_y_(0)\r
  83                 , screen_index_(screen_index)\r
  84                 , graph_(diagnostics::create_graph(narrow(print())))\r
  85                 , executor_(print())\r
  86         {               \r
  87                 graph_->add_guide("frame-time", 0.5);\r
  88                 graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
  89         }\r
  90 \r
  91         ~implementation()\r
  92         {\r
  93                 CASPAR_LOG(info) << print() << L" Shutting down.";      \r
  94         }\r
  95 \r
  96         void initialize(const core::video_format_desc& format_desc, const printer& parent_printer)\r
  97         {\r
  98                 if(!GLEE_VERSION_2_1)\r
  99                         BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 2.1 support."));\r
 100                 \r
 101                 format_desc_ = format_desc;\r
 102                 parent_printer_ = parent_printer;\r
 103 \r
 104                 screen_width_ = format_desc.width;\r
 105                 screen_height_ = format_desc.height;\r
 106 #ifdef _WIN32\r
 107                 DISPLAY_DEVICE d_device;                        \r
 108                 memset(&d_device, 0, sizeof(d_device));\r
 109                 d_device.cb = sizeof(d_device);\r
 110 \r
 111                 std::vector<DISPLAY_DEVICE> displayDevices;\r
 112                 for(int n = 0; EnumDisplayDevices(NULL, n, &d_device, NULL); ++n)\r
 113                 {\r
 114                         displayDevices.push_back(d_device);\r
 115                         memset(&d_device, 0, sizeof(d_device));\r
 116                         d_device.cb = sizeof(d_device);\r
 117                 }\r
 118 \r
 119                 if(screen_index_ >= displayDevices.size())\r
 120                         BOOST_THROW_EXCEPTION(out_of_range() << arg_name_info("screen_index_") << msg_info(narrow(print())));\r
 121                 \r
 122                 DEVMODE devmode;\r
 123                 memset(&devmode, 0, sizeof(devmode));\r
 124                 \r
 125                 if(!EnumDisplaySettings(displayDevices[screen_index_].DeviceName, ENUM_CURRENT_SETTINGS, &devmode))\r
 126                         BOOST_THROW_EXCEPTION(invalid_operation() << arg_name_info("screen_index") << msg_info(narrow(print()) + " EnumDisplaySettings"));\r
 127                 \r
 128                 screen_width_ = windowed_ ? format_desc_.width : devmode.dmPelsWidth;\r
 129                 screen_height_ = windowed_ ? format_desc_.height : devmode.dmPelsHeight;\r
 130                 screen_x_ = devmode.dmPosition.x;\r
 131                 screen_y_ = devmode.dmPosition.y;\r
 132 #else\r
 133                 if(!windowed)\r
 134                         BOOST_THROW_EXCEPTION(not_supported() << msg_info(narrow(print() + " doesn't support non-Win32 fullscreen"));\r
 135 \r
 136                 if(screen_index != 0)\r
 137                         CASPAR_LOG(warning) << print() << " only supports screen_index=0 for non-Win32";\r
 138 #endif          \r
 139                 executor_.start();\r
 140                 executor_.invoke([=]\r
 141                 {\r
 142                         window_.Create(sf::VideoMode(screen_width_, screen_height_, 32), narrow(print()), windowed_ ? sf::Style::Titlebar : sf::Style::Fullscreen);\r
 143                         window_.ShowMouseCursor(false);\r
 144                         window_.SetPosition(screen_x_, screen_y_);\r
 145                         window_.SetSize(screen_width_, screen_height_);\r
 146                         window_.SetActive();\r
 147                         GL(glEnable(GL_TEXTURE_2D));\r
 148                         GL(glDisable(GL_DEPTH_TEST));           \r
 149                         GL(glClearColor(0.0, 0.0, 0.0, 0.0));\r
 150                         GL(glViewport(0, 0, format_desc_.width, format_desc_.height));\r
 151                         glLoadIdentity();\r
 152                                 \r
 153                         wratio_ = static_cast<float>(format_desc_.width)/static_cast<float>(format_desc_.width);\r
 154                         hratio_ = static_cast<float>(format_desc_.height)/static_cast<float>(format_desc_.height);\r
 155 \r
 156                         std::pair<float, float> target_ratio = None();\r
 157                         if(stretch_ == fill)\r
 158                                 target_ratio = Fill();\r
 159                         else if(stretch_ == uniform)\r
 160                                 target_ratio = Uniform();\r
 161                         else if(stretch_ == uniform_to_fill)\r
 162                                 target_ratio = UniformToFill();\r
 163 \r
 164                         wSize_ = target_ratio.first;\r
 165                         hSize_ = target_ratio.second;\r
 166                         \r
 167                         glGenTextures(1, &texture_);\r
 168                         glBindTexture(GL_TEXTURE_2D, texture_);\r
 169                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);\r
 170                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);\r
 171                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);\r
 172                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);\r
 173                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, format_desc_.width, format_desc_.height, 0, GL_BGRA, GL_UNSIGNED_BYTE, 0);\r
 174                         glBindTexture(GL_TEXTURE_2D, 0);\r
 175                         \r
 176                         GL(glGenBuffers(2, pbos_.data()));\r
 177                         \r
 178                         glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[0]);\r
 179                         glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 180                         glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[1]);\r
 181                         glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 182                         glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);\r
 183                 });\r
 184                 active_ = executor_.begin_invoke([]{});\r
 185                 CASPAR_LOG(info) << print() << " Sucessfully initialized.";\r
 186         }\r
 187                 \r
 188         std::pair<float, float> None()\r
 189         {\r
 190                 float width = static_cast<float>(format_desc_.width)/static_cast<float>(screen_width_);\r
 191                 float height = static_cast<float>(format_desc_.height)/static_cast<float>(screen_height_);\r
 192 \r
 193                 return std::make_pair(width, height);\r
 194         }\r
 195 \r
 196         std::pair<float, float> Uniform()\r
 197         {\r
 198                 float aspect = static_cast<float>(format_desc_.width)/static_cast<float>(format_desc_.height);\r
 199                 float width = std::min(1.0f, static_cast<float>(screen_height_)*aspect/static_cast<float>(screen_width_));\r
 200                 float height = static_cast<float>(screen_width_*width)/static_cast<float>(screen_height_*aspect);\r
 201 \r
 202                 return std::make_pair(width, height);\r
 203         }\r
 204 \r
 205         std::pair<float, float> Fill()\r
 206         {\r
 207                 return std::make_pair(1.0f, 1.0f);\r
 208         }\r
 209 \r
 210         std::pair<float, float> UniformToFill()\r
 211         {\r
 212                 float wr = static_cast<float>(format_desc_.width)/static_cast<float>(screen_width_);\r
 213                 float hr = static_cast<float>(format_desc_.height)/static_cast<float>(screen_height_);\r
 214                 float r_inv = 1.0f/std::min(wr, hr);\r
 215 \r
 216                 float width = wr*r_inv;\r
 217                 float height = hr*r_inv;\r
 218 \r
 219                 return std::make_pair(width, height);\r
 220         }\r
 221 \r
 222         void render(const safe_ptr<const core::read_frame>& frame)\r
 223         {                       \r
 224                 glBindTexture(GL_TEXTURE_2D, texture_);\r
 225                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[0]);\r
 226 \r
 227                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, format_desc_.width, format_desc_.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);\r
 228 \r
 229                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[1]);\r
 230 \r
 231                 glBufferData(GL_PIXEL_UNPACK_BUFFER, format_desc_.size, 0, GL_STREAM_DRAW);\r
 232 \r
 233                 auto ptr = glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);\r
 234                 if(ptr)\r
 235                 {\r
 236                         std::copy(frame->image_data().begin(), frame->image_data().end(), reinterpret_cast<char*>(ptr));\r
 237                         glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release the mapped buffer\r
 238                 }\r
 239 \r
 240                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);\r
 241                                 \r
 242                 GL(glClear(GL_COLOR_BUFFER_BIT));                       \r
 243                 glBegin(GL_QUADS);\r
 244                                 glTexCoord2f(0.0f,        hratio_);     glVertex2f(-wSize_, -hSize_);\r
 245                                 glTexCoord2f(wratio_, hratio_); glVertex2f( wSize_, -hSize_);\r
 246                                 glTexCoord2f(wratio_, 0.0f);    glVertex2f( wSize_,  hSize_);\r
 247                                 glTexCoord2f(0.0f,        0.0f);        glVertex2f(-wSize_,  hSize_);\r
 248                 glEnd();\r
 249                 \r
 250                 glBindTexture(GL_TEXTURE_2D, 0);\r
 251 \r
 252                 std::rotate(pbos_.begin(), pbos_.begin() + 1, pbos_.end());\r
 253 \r
 254                 clock_.tick(1.0/format_desc_.fps);\r
 255         }\r
 256                 \r
 257         void send(const safe_ptr<const core::read_frame>& frame)\r
 258         {\r
 259                 active_.get();\r
 260                 active_ = executor_.begin_invoke([=]\r
 261                 {\r
 262                         perf_timer_.reset();\r
 263                         sf::Event e;\r
 264                         while(window_.GetEvent(e)){}\r
 265                         render(frame);\r
 266                         window_.Display();\r
 267                         graph_->update_value("frame-time", static_cast<float>(perf_timer_.elapsed()/format_desc_.interval*0.5));\r
 268                 });\r
 269         }\r
 270 \r
 271         std::wstring print() const\r
 272         {\r
 273                 return (parent_printer_ ? parent_printer_() + L"/" : L"") + L"ogl[" + boost::lexical_cast<std::wstring>(screen_index_) + L"]";\r
 274         }\r
 275 \r
 276         size_t buffer_depth() const{return 2;}\r
 277 };\r
 278 \r
 279 ogl_consumer::ogl_consumer(ogl_consumer&& other) : impl_(std::move(other.impl_)){}\r
 280 ogl_consumer::ogl_consumer(unsigned int screen_index, stretch stretch, bool windowed) : impl_(new implementation(screen_index, stretch, windowed)){}\r
 281 void ogl_consumer::send(const safe_ptr<const core::read_frame>& frame){impl_->send(frame);}\r
 282 size_t ogl_consumer::buffer_depth() const{return impl_->buffer_depth();}\r
 283 void ogl_consumer::initialize(const core::video_format_desc& format_desc, const printer& parent_printer){impl_->initialize(format_desc, parent_printer);}\r
 284 std::wstring ogl_consumer::print() const {return impl_->print();}\r
 285 \r
 286 safe_ptr<core::frame_consumer> create_ogl_consumer(const std::vector<std::wstring>& params)\r
 287 {\r
 288         if(params.size() < 1 || params[0] != L"OGL")\r
 289                 return core::frame_consumer::empty();\r
 290         \r
 291         unsigned int screen_index = 0;\r
 292         stretch stretch = stretch::fill;\r
 293         bool windowed = true;\r
 294         \r
 295         if(params.size() > 1) \r
 296                 screen_index = lexical_cast_or_default<int>(params[2], screen_index);\r
 297 \r
 298         if(params.size() > 2) \r
 299                 windowed = lexical_cast_or_default<bool>(params[3], windowed);\r
 300 \r
 301         return make_safe<ogl_consumer>(screen_index, stretch, windowed);\r
 302 }\r
 303 \r
 304 }