git.sesse.net Git - casparcg/blob - core/mixer/write_frame.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 #include "../stdafx.h"\r
  21 \r
  22 #include "write_frame.h"\r
  23 \r
  24 #include "gpu/ogl_device.h"\r
  25 #include "gpu/host_buffer.h"\r
  26 #include "gpu/device_buffer.h"\r
  27 \r
  28 #include <core/producer/frame/frame_visitor.h>\r
  29 #include <core/producer/frame/pixel_format.h>\r
  30 \r
  31 namespace caspar { namespace core {\r
  32                                                                                                                                                                                                                                                                                                                         \r
  33 struct write_frame::implementation : boost::noncopyable\r
  34 {                               \r
  35         ogl_device&                                                             ogl_;\r
  36         std::vector<safe_ptr<host_buffer>>              buffers_;\r
  37         std::vector<safe_ptr<device_buffer>>    textures_;\r
  38         std::vector<int16_t>                                    audio_data_;\r
  39         const core::pixel_format_desc                   desc_;\r
  40         int                                                                             tag_;\r
  41 \r
  42 public:\r
  43         implementation(ogl_device& ogl, int tag, const core::pixel_format_desc& desc) \r
  44                 : ogl_(ogl)\r
  45                 , desc_(desc)\r
  46                 , tag_(tag)\r
  47         {\r
  48                 ogl_.invoke([&]\r
  49                 {\r
  50                         std::transform(desc.planes.begin(), desc.planes.end(), std::back_inserter(buffers_), [&](const core::pixel_format_desc::plane& plane)\r
  51                         {\r
  52                                 return ogl_.create_host_buffer(plane.size, host_buffer::write_only);\r
  53                         });\r
  54                         std::transform(desc.planes.begin(), desc.planes.end(), std::back_inserter(textures_), [&](const core::pixel_format_desc::plane& plane)\r
  55                         {\r
  56                                 return ogl_.create_device_buffer(plane.width, plane.height, plane.channels);\r
  57                         });\r
  58                 }, high_priority);\r
  59         }\r
  60                 \r
  61         void accept(write_frame& self, core::frame_visitor& visitor)\r
  62         {\r
  63                 visitor.begin(self);\r
  64                 visitor.visit(self);\r
  65                 visitor.end();\r
  66         }\r
  67 \r
  68         boost::iterator_range<uint8_t*> image_data(size_t index)\r
  69         {\r
  70                 if(index >= buffers_.size() || !buffers_[index]->data())\r
  71                         return boost::iterator_range<const uint8_t*>();\r
  72                 auto ptr = static_cast<uint8_t*>(buffers_[index]->data());\r
  73                 return boost::iterator_range<uint8_t*>(ptr, ptr+buffers_[index]->size());\r
  74         }\r
  75 \r
  76         const boost::iterator_range<const uint8_t*> image_data(size_t index) const\r
  77         {\r
  78                 if(index >= buffers_.size() || !buffers_[index]->data())\r
  79                         return boost::iterator_range<const uint8_t*>();\r
  80                 auto ptr = static_cast<const uint8_t*>(buffers_[index]->data());\r
  81                 return boost::iterator_range<const uint8_t*>(ptr, ptr+buffers_[index]->size());\r
  82         }\r
  83 \r
  84         void commit()\r
  85         {\r
  86                 for(size_t n = 0; n < buffers_.size(); ++n)\r
  87                         commit(n);\r
  88         }\r
  89 \r
  90         void commit(size_t plane_index)\r
  91         {\r
  92                 if(plane_index >= buffers_.size())\r
  93                         return;\r
  94                                 \r
  95                 auto texture = textures_[plane_index];\r
  96                 auto buffer = std::move(buffers_[plane_index]); // Release buffer once done.\r
  97 \r
  98                 ogl_.begin_invoke([=]\r
  99                 {\r
 100                         texture->read(*buffer);\r
 101                 });\r
 102         }\r
 103 };\r
 104         \r
 105 write_frame::write_frame(ogl_device& ogl, int32_t tag, const core::pixel_format_desc& desc) \r
 106         : impl_(new implementation(ogl, tag, desc)){}\r
 107 void write_frame::accept(core::frame_visitor& visitor){impl_->accept(*this, visitor);}\r
 108 \r
 109 boost::iterator_range<uint8_t*> write_frame::image_data(size_t index){return impl_->image_data(index);}\r
 110 std::vector<int16_t>& write_frame::audio_data() { return impl_->audio_data_; }\r
 111 const boost::iterator_range<const uint8_t*> write_frame::image_data(size_t index) const\r
 112 {\r
 113         return boost::iterator_range<const uint8_t*>(impl_->image_data(index).begin(), impl_->image_data(index).end());\r
 114 }\r
 115 const boost::iterator_range<const int16_t*> write_frame::audio_data() const\r
 116 {\r
 117         return boost::iterator_range<const int16_t*>(impl_->audio_data_.data(), impl_->audio_data_.data() + impl_->audio_data_.size());\r
 118 }\r
 119 int write_frame::tag() const {return impl_->tag_;}\r
 120 const core::pixel_format_desc& write_frame::get_pixel_format_desc() const{return impl_->desc_;}\r
 121 const std::vector<safe_ptr<device_buffer>>& write_frame::get_textures() const{return impl_->textures_;}\r
 122 void write_frame::commit(size_t plane_index){impl_->commit(plane_index);}\r
 123 void write_frame::commit(){impl_->commit();}\r
 124 }}