+/*\r
+* copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
+*\r
+* This file is part of CasparCG.\r
+*\r
+* CasparCG is free software: you can redistribute it and/or modify\r
+* it under the terms of the GNU General Public License as published by\r
+* the Free Software Foundation, either version 3 of the License, or\r
+* (at your option) any later version.\r
+*\r
+* CasparCG is distributed in the hope that it will be useful,\r
+* but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+* GNU General Public License for more details.\r
+\r
+* You should have received a copy of the GNU General Public License\r
+* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
+*\r
+*/\r
+\r
#include "../stdafx.h"\r
\r
#include "layer.h"\r
\r
-#include "../producer/frame_producer.h"\r
+#include "frame_producer.h"\r
\r
-#include "../format/video_format.h"\r
+#include "frame/basic_frame.h"\r
\r
-namespace caspar { namespace core {\r
\r
+namespace caspar { namespace core {\r
+ \r
struct layer::implementation\r
-{ \r
+{ \r
+ safe_ptr<frame_producer> foreground_;\r
+ safe_ptr<frame_producer> background_;\r
+ bool is_paused_;\r
+ int auto_play_delta_;\r
+ int64_t frame_number_;\r
+public:\r
implementation() \r
- : preview_frame_(nullptr), active_(nullptr), \r
- background_(nullptr), last_frame_(nullptr) {}\r
+ : foreground_(frame_producer::empty())\r
+ , background_(frame_producer::empty())\r
+ , is_paused_(false)\r
+ , auto_play_delta_(-1){}\r
\r
- void load(const frame_producer_ptr& frame_producer, load_option::type option)\r
- {\r
- if(frame_producer == nullptr) \r
- BOOST_THROW_EXCEPTION(null_argument() << arg_name_info("frame_producer"));\r
- \r
- last_frame_ = nullptr;\r
- background_ = frame_producer;\r
- if(option == load_option::preview) \r
- {\r
- last_frame_ = frame_producer->render_frame();\r
- if(last_frame_ != nullptr)\r
- last_frame_->audio_data().clear(); // No audio\r
- active_ = nullptr; \r
+ void pause(){is_paused_ = true;}\r
+ void resume(){is_paused_ = false;}\r
+\r
+ void load(const safe_ptr<frame_producer>& producer, bool preview, int auto_play_delta)\r
+ { \r
+ auto_play_delta_ = auto_play_delta;\r
+\r
+ background_ = producer;\r
+\r
+ if(preview) // Play the first frame and pause.\r
+ { \r
+ play();\r
+ receive();\r
+ pause();\r
}\r
- else if(option == load_option::auto_play)\r
- play(); \r
}\r
\r
void play()\r
{ \r
- if(background_ != nullptr)\r
+ if(background_ != frame_producer::empty())\r
{\r
- background_->set_leading_producer(active_);\r
- active_ = background_;\r
- background_ = nullptr;\r
+ background_->set_leading_producer(foreground_);\r
+ foreground_ = background_;\r
+ frame_number_ = 0;\r
+ background_ = frame_producer::empty();\r
}\r
-\r
- is_paused_ = false;\r
+ resume();\r
}\r
-\r
- void pause()\r
- {\r
- is_paused_ = true;\r
- }\r
-\r
+ \r
void stop()\r
{\r
- active_ = nullptr;\r
- last_frame_ = nullptr;\r
+ foreground_ = frame_producer::empty();\r
}\r
-\r
- void clear()\r
- {\r
- active_ = nullptr;\r
- background_ = nullptr;\r
- last_frame_ = nullptr;\r
- }\r
- \r
- frame_ptr render_frame()\r
+ \r
+ safe_ptr<basic_frame> receive()\r
{ \r
- if(!active_ || is_paused_)\r
- return last_frame_;\r
+ if(is_paused_)\r
+ return foreground_->last_frame();\r
+ \r
+ auto frame = receive_and_follow(foreground_);\r
+ if(frame == core::basic_frame::late())\r
+ return foreground_->last_frame();\r
+ \r
+ ++frame_number_;\r
\r
- try\r
+ if(auto_play_delta_ >= 0)\r
{\r
- last_frame_ = active_->render_frame();\r
+ const auto frames_left = foreground_->nb_frames() - frame_number_ - auto_play_delta_;\r
\r
- if(last_frame_ == nullptr)\r
+ if(frames_left <= 0 || frame == core::basic_frame::eof())\r
{\r
- active_ = active_->get_following_producer();\r
- last_frame_ = render_frame();\r
+ CASPAR_VERIFY(auto_play_delta_ != 0 || frame == core::basic_frame::eof())\r
+\r
+ CASPAR_LOG(info) << L"Automatically playing next clip with " << auto_play_delta_ << " frames offset.";\r
+ \r
+ auto_play_delta_ = -1;\r
+ play();\r
+ frame = receive();\r
}\r
- }\r
- catch(...)\r
- {\r
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- CASPAR_LOG(warning) << L"Removed " << (active_ ? active_->print() : L"frame_producer") << L" from layer.";\r
- active_ = nullptr;\r
- last_frame_ = nullptr;\r
- }\r
\r
- return last_frame_;\r
- } \r
- \r
- tbb::atomic<bool> is_paused_;\r
- frame_ptr last_frame_;\r
- frame_ptr preview_frame_;\r
- frame_producer_ptr active_;\r
- frame_producer_ptr background_;\r
+ }\r
+ \r
+ return frame;\r
+ }\r
};\r
\r
layer::layer() : impl_(new implementation()){}\r
-layer::layer(layer&& other) : impl_(std::move(other.impl_)){other.impl_ = nullptr;}\r
+layer::layer(layer&& other) : impl_(std::move(other.impl_)){}\r
layer& layer::operator=(layer&& other)\r
{\r
- impl_ = std::move(other.impl_); \r
- other.impl_ = nullptr;\r
+ impl_ = std::move(other.impl_);\r
return *this;\r
}\r
-void layer::load(const frame_producer_ptr& frame_producer, load_option::type option){return impl_->load(frame_producer, option);} \r
+layer::layer(const layer& other) : impl_(new implementation(*other.impl_)){}\r
+layer& layer::operator=(const layer& other)\r
+{\r
+ layer temp(other);\r
+ temp.swap(*this);\r
+ return *this;\r
+}\r
+void layer::swap(layer& other)\r
+{ \r
+ impl_.swap(other.impl_);\r
+}\r
+void layer::load(const safe_ptr<frame_producer>& frame_producer, bool preview, int auto_play_delta){return impl_->load(frame_producer, preview, auto_play_delta);} \r
void layer::play(){impl_->play();}\r
void layer::pause(){impl_->pause();}\r
void layer::stop(){impl_->stop();}\r
-void layer::clear(){impl_->clear();}\r
-frame_ptr layer::render_frame() {return impl_->render_frame();}\r
-frame_producer_ptr layer::active() const { return impl_->active_;}\r
-frame_producer_ptr layer::background() const { return impl_->background_;}\r
+safe_ptr<basic_frame> layer::receive() {return impl_->receive();}\r
+safe_ptr<frame_producer> layer::foreground() const { return impl_->foreground_;}\r
+safe_ptr<frame_producer> layer::background() const { return impl_->background_;}\r
}}
\ No newline at end of file
projects / casparcg / blobdiff