git.sesse.net Git - casparcg/blob - core/renderer/layer.cpp

   1 #include "../stdafx.h"\r
   2 \r
   3 #include "layer.h"\r
   4 \r
   5 #include "../producer/frame_producer.h"\r
   6 \r
   7 #include "../frame/frame_format.h"\r
   8 \r
   9 namespace caspar { namespace core { namespace renderer {\r
  10 \r
  11 struct layer::implementation\r
  12 {               \r
  13         implementation() : preview_frame_(nullptr), active_(nullptr), background_(nullptr), last_frame_(nullptr) {}\r
  14         \r
  15         void load(const frame_producer_ptr& frame_producer, load_option option)\r
  16         {\r
  17                 if(frame_producer == nullptr) \r
  18                         BOOST_THROW_EXCEPTION(null_argument() << arg_name_info("frame_producer"));\r
  19                         \r
  20                 last_frame_ = nullptr;\r
  21                 background_ = frame_producer;\r
  22                 if(option == load_option::preview)              \r
  23                 {\r
  24                         last_frame_ = frame_producer->get_frame();\r
  25                         if(last_frame_ != nullptr)\r
  26                                 last_frame_->audio_data().clear(); // No audio\r
  27                         active_ = nullptr;      \r
  28                 }\r
  29                 else if(option == load_option::auto_play)\r
  30                         play();                 \r
  31         }\r
  32         \r
  33         void play()\r
  34         {                       \r
  35                 if(background_ != nullptr)\r
  36                 {\r
  37                         background_->set_leading_producer(active_);\r
  38                         active_ = background_;\r
  39                         background_ = nullptr;\r
  40                 }\r
  41 \r
  42                 is_paused_ = false;\r
  43         }\r
  44 \r
  45         void pause()\r
  46         {\r
  47                 is_paused_ = true;\r
  48         }\r
  49 \r
  50         void stop()\r
  51         {\r
  52                 active_ = nullptr;\r
  53                 last_frame_ = nullptr;\r
  54         }\r
  55 \r
  56         void clear()\r
  57         {\r
  58                 active_ = nullptr;\r
  59                 background_ = nullptr;\r
  60                 last_frame_ = nullptr;\r
  61         }\r
  62         \r
  63         gpu_frame_ptr get_frame()\r
  64         {               \r
  65                 if(!active_ || is_paused_)\r
  66                         return last_frame_;\r
  67 \r
  68                 try\r
  69                 {\r
  70                         last_frame_ = active_->get_frame();\r
  71                 }\r
  72                 catch(...)\r
  73                 {\r
  74                         CASPAR_LOG_CURRENT_EXCEPTION();\r
  75                         active_ = nullptr;\r
  76                         last_frame_ = nullptr;\r
  77                         CASPAR_LOG(warning) << "Removed producer from layer.";\r
  78                 }\r
  79 \r
  80                 if(last_frame_ == nullptr && active_ != nullptr)\r
  81                 {\r
  82                         active_ = active_->get_following_producer();\r
  83                         last_frame_ = get_frame();\r
  84                 }\r
  85                 return last_frame_;\r
  86         }       \r
  87                 \r
  88         tbb::atomic<bool> is_paused_;\r
  89         gpu_frame_ptr last_frame_;\r
  90         gpu_frame_ptr preview_frame_;\r
  91         frame_producer_ptr active_;\r
  92         frame_producer_ptr background_;\r
  93 };\r
  94 \r
  95 layer::layer() : impl_(new implementation()){}\r
  96 layer::layer(layer&& other) : impl_(std::move(other.impl_)){other.impl_ = nullptr;}\r
  97 layer::layer(const layer& other) : impl_(new implementation(*other.impl_)) {}\r
  98 layer& layer::operator=(layer&& other)\r
  99 {\r
 100         impl_ = std::move(other.impl_); \r
 101         other.impl_ = nullptr;\r
 102         return *this;\r
 103 }\r
 104 layer& layer::operator=(const layer& other)\r
 105 {\r
 106         layer temp(other);\r
 107         impl_.swap(temp.impl_);\r
 108         return *this;\r
 109 }\r
 110 void layer::load(const frame_producer_ptr& frame_producer, load_option option){return impl_->load(frame_producer, option);}     \r
 111 void layer::play(){impl_->play();}\r
 112 void layer::pause(){impl_->pause();}\r
 113 void layer::stop(){impl_->stop();}\r
 114 void layer::clear(){impl_->clear();}\r
 115 gpu_frame_ptr layer::get_frame() {return impl_->get_frame();}\r
 116 frame_producer_ptr layer::active() const { return impl_->active_;}\r
 117 frame_producer_ptr layer::background() const { return impl_->background_;}\r
 118 }}}