git.sesse.net Git - casparcg/blob - core/mixer/read_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 "read_frame.h"\r
  23 \r
  24 #include "gpu/host_buffer.h"    \r
  25 #include "gpu/ogl_device.h"\r
  26 \r
  27 namespace caspar { namespace core {\r
  28                                                                                                                                                                                                                                                                                                                         \r
  29 struct read_frame::implementation : boost::noncopyable\r
  30 {\r
  31         boost::unique_future<safe_ptr<host_buffer>> image_data_;\r
  32         std::vector<int16_t> audio_data_;\r
  33 \r
  34 public:\r
  35         implementation(boost::unique_future<safe_ptr<host_buffer>>&& image_data, std::vector<int16_t>&& audio_data) \r
  36                 : image_data_(std::move(image_data))\r
  37                 , audio_data_(std::move(audio_data)){}  \r
  38 \r
  39         const boost::iterator_range<const uint8_t*> image_data()\r
  40         {\r
  41                 try\r
  42                 {\r
  43                         if(!image_data_.get()->data())\r
  44                         {\r
  45                                 ogl_device::invoke([&]\r
  46                                 {\r
  47                                         image_data_.get()->map();\r
  48                                 }, high_priority);\r
  49                         }\r
  50 \r
  51                         if(!image_data_.get()->data())\r
  52                                 return boost::iterator_range<const uint8_t*>();\r
  53                         auto ptr = static_cast<const uint8_t*>(image_data_.get()->data());\r
  54                         return boost::iterator_range<const uint8_t*>(ptr, ptr + image_data_.get()->size());\r
  55                 }\r
  56                 catch(...) // image_data_ future might store exception.\r
  57                 {\r
  58                         CASPAR_LOG_CURRENT_EXCEPTION();\r
  59                         return boost::iterator_range<const uint8_t*>();\r
  60                 }\r
  61         }\r
  62         const boost::iterator_range<const int16_t*> audio_data() const\r
  63         {\r
  64                 return boost::iterator_range<const int16_t*>(audio_data_.data(), audio_data_.data() + audio_data_.size());\r
  65         }\r
  66 };\r
  67 \r
  68 read_frame::read_frame(boost::unique_future<safe_ptr<host_buffer>>&& image_data, std::vector<int16_t>&& audio_data) \r
  69         : impl_(new implementation(std::move(image_data), std::move(audio_data))){}\r
  70 read_frame::read_frame(safe_ptr<host_buffer>&& image_data, std::vector<int16_t>&& audio_data) \r
  71 {\r
  72         boost::promise<safe_ptr<host_buffer>> p;\r
  73         p.set_value(std::move(image_data));\r
  74         impl_.reset(new implementation(std::move(p.get_future()), std::move(audio_data)));\r
  75 }\r
  76 \r
  77 const boost::iterator_range<const uint8_t*> read_frame::image_data() const{return impl_->image_data();}\r
  78 const boost::iterator_range<const int16_t*> read_frame::audio_data() const{return impl_->audio_data();}\r
  79 \r
  80 }}