]> git.sesse.net Git - casparcg/blobdiff - modules/ffmpeg/producer/ffmpeg_producer.cpp
2.0. Added some comments.
[casparcg] / modules / ffmpeg / producer / ffmpeg_producer.cpp
index 51ff7dfc568609c13df7ae69401915cba04e3c38..9e32f95f66aa40cd235db8971146509144bac522 100644 (file)
 \r
 #include "ffmpeg_producer.h"\r
 \r
+#include "frame_muxer.h"\r
 #include "input.h"\r
 #include "audio/audio_decoder.h"\r
 #include "video/video_decoder.h"\r
 \r
+#include <common/utility/assert.h>\r
 #include <common/utility/timer.h>\r
 #include <common/diagnostics/graph.h>\r
 \r
-#include <core/producer/frame/basic_frame.h>\r
 #include <core/mixer/write_frame.h>\r
-#include <core/producer/frame/audio_transform.h>\r
 #include <core/video_format.h>\r
+#include <core/producer/frame/audio_transform.h>\r
+#include <core/producer/frame/basic_frame.h>\r
+#include <core/producer/color/color_producer.h>\r
 \r
 #include <common/env.h>\r
 \r
-#include <tbb/parallel_invoke.h>\r
-\r
 #include <boost/timer.hpp>\r
 #include <boost/range/algorithm.hpp>\r
 #include <boost/range/algorithm_ext.hpp>\r
 \r
+#include <tbb/task_group.h>\r
+\r
 #include <deque>\r
+#include <vector>\r
 \r
 namespace caspar {\r
-       \r
+                       \r
 struct ffmpeg_producer : public core::frame_producer\r
 {\r
-       const std::wstring                                              filename_;\r
+       const std::wstring                                                              filename_;\r
        \r
-       const safe_ptr<diagnostics::graph>              graph_;\r
-       boost::timer                                                    frame_timer_;\r
+       const safe_ptr<diagnostics::graph>                              graph_;\r
+       boost::timer                                                                    frame_timer_;\r
                                        \r
-       const safe_ptr<core::frame_factory>             frame_factory_;\r
+       const safe_ptr<core::frame_factory>                             frame_factory_;\r
+       const core::video_format_desc                                   format_desc_;\r
+\r
+       input                                                                                   input_; \r
+       video_decoder                                                                   video_decoder_;\r
+       audio_decoder                                                                   audio_decoder_;\r
+\r
+       std::queue<safe_ptr<core::basic_frame>>                 output_buffer_;\r
+\r
+       frame_muxer                                                                             muxer_;\r
+       \r
+       tbb::task_group                                                                 tasks_;\r
 \r
-       input                                                                   input_; \r
-       std::unique_ptr<video_decoder>                  video_decoder_;\r
-       std::unique_ptr<audio_decoder>                  audio_decoder_;\r
 public:\r
-       explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, bool loop, int start, int length) \r
+       explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, const std::wstring& filter, bool loop, int start, int length) \r
                : filename_(filename)\r
                , graph_(diagnostics::create_graph(narrow(print())))\r
                , frame_factory_(frame_factory)         \r
-               , input_(safe_ptr<diagnostics::graph>(graph_), filename_, loop, start)\r
+               , format_desc_(frame_factory->get_video_format_desc())\r
+               , input_(safe_ptr<diagnostics::graph>(graph_), filename_, loop, start, length)\r
+               , video_decoder_(input_.context(), frame_factory, filter)\r
+               , audio_decoder_(input_.context(), frame_factory->get_video_format_desc())\r
+               , muxer_(video_decoder_.fps(), format_desc_, frame_factory)\r
        {\r
                graph_->add_guide("frame-time", 0.5);\r
-               graph_->set_color("frame-time",  diagnostics::color(1.0f, 0.0f, 0.0f));\r
+               graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
                graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));           \r
                \r
-               double frame_time = 1.0f/input_.fps();\r
-               double format_frame_time = 1.0/frame_factory->get_video_format_desc().fps;\r
-               if(abs(frame_time - format_frame_time) > 0.0001 && abs(frame_time - format_frame_time/2) > 0.0001)\r
-                       CASPAR_LOG(warning) << print() << L" Invalid framerate detected. This may cause distorted audio during playback. frame-time: " << frame_time;\r
-               \r
-               video_decoder_.reset(input_.get_video_codec_context() ? \r
-                       new video_decoder(*input_.get_video_codec_context(), frame_factory) : nullptr);\r
-                       \r
-               audio_decoder_.reset(input_.get_audio_codec_context() ? \r
-                       new audio_decoder(*input_.get_audio_codec_context(), frame_factory->get_video_format_desc()) : nullptr);                \r
-                                       \r
-               // Fill buffers.\r
-               decode_next_packets();\r
+               for(int n = 0; n < 128 && muxer_.size() < 2; ++n)\r
+                       decode_frame();\r
        }\r
 \r
-       virtual safe_ptr<core::basic_frame> receive()\r
+       ~ffmpeg_producer()\r
        {\r
-               frame_timer_.restart();\r
-\r
-               auto result = decode_frame();\r
-                               \r
-               graph_->update_value("frame-time", static_cast<float>(frame_timer_.elapsed()*frame_factory_->get_video_format_desc().fps*0.5));\r
-                                       \r
-               return result;\r
-       }\r
-       \r
-       virtual std::wstring print() const\r
-       {\r
-               return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
+               tasks_.cancel();\r
+               tasks_.wait();\r
        }\r
 \r
-       void decode_next_packets()\r
+       virtual safe_ptr<core::basic_frame> receive()\r
        {\r
-               tbb::parallel_invoke\r
-               (\r
-                       [&]\r
-                       {\r
-                               std::shared_ptr<AVPacket> pkt;\r
-                               for(int n = 0; n < 8 && video_decoder_ && video_decoder_->empty() && input_.try_pop_video_packet(pkt); ++n)\r
-                                       video_decoder_->push(std::move(pkt));\r
-                       }, \r
-                       [&]\r
-                       {\r
-                               std::shared_ptr<AVPacket> pkt;\r
-                               for(int n = 0; n < 8 && audio_decoder_ && audio_decoder_->empty() && input_.try_pop_audio_packet(pkt); ++n)\r
-                                       audio_decoder_->push(std::move(pkt));\r
-                       }\r
-               );      \r
-       }\r
+               if(output_buffer_.empty())\r
+               {       \r
+                       //tasks_.wait();\r
 \r
-       safe_ptr<core::basic_frame> decode_frame()\r
-       {\r
-               decode_next_packets();\r
+                       while(muxer_.size() > 0)\r
+                               output_buffer_.push(muxer_.pop());\r
 \r
-               if(video_decoder_ && !video_decoder_->empty() && audio_decoder_ && !audio_decoder_->empty())\r
-               {\r
-                       auto frame = std::move(video_decoder_->front());                                \r
-                       video_decoder_->pop();\r
-                               \r
-                       frame->audio_data() = std::move(audio_decoder_->front());\r
-                       audio_decoder_->pop();\r
+                       //tasks_.run([=]\r
+                       //{\r
+                               frame_timer_.restart();\r
 \r
-                       return frame;\r
-               }\r
-               else if(video_decoder_ && !video_decoder_->empty() && !audio_decoder_)\r
-               {\r
-                       auto frame = std::move(video_decoder_->front());                                \r
-                       video_decoder_->pop();\r
-                       frame->get_audio_transform().set_has_audio(false);      \r
+                               for(int n = 0; n < 64 && muxer_.empty(); ++n)\r
+                                       decode_frame();\r
 \r
-                       return frame;\r
+                               graph_->update_value("frame-time", static_cast<float>(frame_timer_.elapsed()*format_desc_.fps*0.5));\r
+                       //});\r
                }\r
-               else if(audio_decoder_ && !audio_decoder_->empty() && !video_decoder_)\r
-               {\r
-                       auto frame = frame_factory_->create_frame(this, 1, 1);\r
-                       std::fill(frame->image_data().begin(), frame->image_data().end(), 0);\r
-                               \r
-                       frame->audio_data() = std::move(audio_decoder_->front());\r
-                       audio_decoder_->pop();\r
+               \r
+               auto frame = core::basic_frame::late();\r
 \r
-                       return frame;\r
-               }\r
-               else if(!input_.is_running() || (!video_decoder_ && !audio_decoder_))\r
+               if(output_buffer_.empty())\r
                {\r
-                       return core::basic_frame::eof();\r
+                       if(input_.eof())\r
+                               frame = core::basic_frame::eof();\r
+                       else\r
+                               graph_->add_tag("underflow");                   \r
                }\r
                else\r
                {\r
-                       graph_->add_tag("underflow");\r
-                       return core::basic_frame::late();\r
+                       frame = output_buffer_.front();\r
+                       output_buffer_.pop();\r
+               }\r
+               \r
+               return frame;\r
+       }\r
+\r
+       void decode_frame()\r
+       {\r
+               for(int n = 0; n < 32 && ((muxer_.video_frames() < 2 && !video_decoder_.ready()) ||     (muxer_.audio_chunks() < 2 && !audio_decoder_.ready())); ++n) \r
+               {\r
+                       std::shared_ptr<AVPacket> pkt;\r
+                       if(input_.try_pop(pkt))\r
+                       {\r
+                               video_decoder_.push(pkt);\r
+                               audio_decoder_.push(pkt);\r
+                       }\r
                }\r
+\r
+               decltype(video_decoder_.poll()) video_frames;\r
+               decltype(audio_decoder_.poll()) audio_samples;\r
+               \r
+               tbb::parallel_invoke(\r
+               [&]\r
+               {\r
+                       if(muxer_.video_frames() < 2)\r
+                               video_frames = video_decoder_.poll();\r
+               },\r
+               [&]\r
+               {\r
+                       if(muxer_.audio_chunks() < 2)\r
+                               audio_samples = audio_decoder_.poll();\r
+               });\r
+               \r
+               BOOST_FOREACH(auto& audio, audio_samples)\r
+                       muxer_.push(audio);\r
+\r
+               BOOST_FOREACH(auto& video, video_frames)\r
+                       muxer_.push(video);             \r
+       }\r
+                               \r
+       virtual std::wstring print() const\r
+       {\r
+               return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
        }\r
 };\r
 \r
@@ -170,7 +180,7 @@ safe_ptr<core::frame_producer> create_ffmpeg_producer(const safe_ptr<core::frame
        \r
        auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
        {                                       \r
-               return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
+               return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
        });\r
 \r
        if(ext == extensions.end())\r
@@ -179,24 +189,25 @@ safe_ptr<core::frame_producer> create_ffmpeg_producer(const safe_ptr<core::frame
        std::wstring path = filename + L"." + *ext;\r
        bool loop = boost::find(params, L"LOOP") != params.end();\r
 \r
-       static const boost::wregex expr(L"\\((?<START>\\d+)(,(?<LENGTH>\\d+)?)?\\)");//(,(?<END>\\d+))?\\]"); // boost::regex has no repeated captures?\r
-       boost::wsmatch what;\r
-       auto it = std::find_if(params.begin(), params.end(), [&](const std::wstring& str)\r
-       {\r
-               return boost::regex_match(str, what, expr);\r
-       });\r
-\r
        int start = -1;\r
        int length = -1;\r
+       \r
+       auto seek_it = std::find(params.begin(), params.end(), L"SEEK");\r
+       if(seek_it != params.end())\r
+       {\r
+               if(++seek_it != params.end())\r
+                       start = boost::lexical_cast<int>(*seek_it);\r
+       }\r
 \r
-       if(it != params.end())\r
+       std::wstring filter = L"";\r
+       auto filter_it = std::find(params.begin(), params.end(), L"FILTER");\r
+       if(filter_it != params.end())\r
        {\r
-               start = lexical_cast_or_default(what["START"].str(), -1);\r
-               if(what["LENGTH"].matched)\r
-                       length = lexical_cast_or_default(what["LENGTH"].str(), -1);\r
+               if(++filter_it != params.end())\r
+                       filter = *filter_it;\r
        }\r
-       \r
-       return make_safe<ffmpeg_producer>(frame_factory, path, loop, start, length);\r
+\r
+       return make_safe<ffmpeg_producer>(frame_factory, path, filter, loop, start, length);\r
 }\r
 \r
 }
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