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