git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/ffmpeg_producer.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 "ffmpeg_producer.h"\r
  23 \r
  24 #include "frame_muxer.h"\r
  25 #include "input.h"\r
  26 #include "util.h"\r
  27 #include "audio/audio_decoder.h"\r
  28 #include "video/video_decoder.h"\r
  29 \r
  30 #include <common/concrt/bounded_buffer.h>\r
  31 #include <common/env.h>\r
  32 #include <common/utility/assert.h>\r
  33 #include <common/diagnostics/graph.h>\r
  34 \r
  35 #include <core/video_format.h>\r
  36 #include <core/producer/frame_producer.h>\r
  37 #include <core/producer/frame/frame_factory.h>\r
  38 #include <core/producer/frame/basic_frame.h>\r
  39 \r
  40 #include <boost/algorithm/string.hpp>\r
  41 #include <boost/assign.hpp>\r
  42 #include <boost/timer.hpp>\r
  43 #include <boost/foreach.hpp>\r
  44 #include <boost/filesystem.hpp>\r
  45 #include <boost/range/algorithm/find_if.hpp>\r
  46 #include <boost/range/algorithm/find.hpp>\r
  47 \r
  48 #include <agents.h>\r
  49 #include <ppl.h>\r
  50 \r
  51 namespace caspar { namespace ffmpeg {\r
  52 \r
  53 template<typename T>\r
  54 struct buffer_alias\r
  55 {\r
  56         typedef Concurrency::bounded_buffer<std::shared_ptr<T>> type;\r
  57 };\r
  58                                 \r
  59 struct ffmpeg_producer : public core::frame_producer\r
  60 {       \r
  61         const std::wstring                                              filename_;\r
  62         const int                                                               start_;\r
  63         const bool                                                              loop_;\r
  64         const size_t                                                    length_;\r
  65 \r
  66         buffer_alias<AVPacket>::type                    video_packets_;\r
  67         buffer_alias<AVPacket>::type                    audio_packets_;\r
  68         buffer_alias<AVFrame>::type                             video_frames_;\r
  69         buffer_alias<core::audio_buffer>::type  audio_buffers_;\r
  70         buffer_alias<core::basic_frame>::type   muxed_frames_;\r
  71         Concurrency::overwrite_buffer<bool>             active_token_;\r
  72                 \r
  73         const safe_ptr<diagnostics::graph>              graph_;\r
  74                                         \r
  75         input                                                                   input_; \r
  76         video_decoder                                                   video_decoder_;\r
  77         audio_decoder                                                   audio_decoder_; \r
  78         frame_muxer2                                                    muxer_;\r
  79 \r
  80         safe_ptr<core::basic_frame>                             last_frame_;\r
  81         \r
  82 public:\r
  83         explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, const std::wstring& filter, bool loop, int start, size_t length) \r
  84                 : filename_(filename)\r
  85                 , start_(start)\r
  86                 , loop_(loop)\r
  87                 , length_(length)\r
  88                 , video_packets_(25)\r
  89                 , audio_packets_(25)\r
  90                 , video_frames_(2)\r
  91                 , audio_buffers_(2)\r
  92                 , muxed_frames_(2)\r
  93                 , graph_(diagnostics::create_graph([this]{return print();}, false))\r
  94                 , input_(active_token_, video_packets_, audio_packets_, graph_, filename_, loop, start, length)\r
  95                 , video_decoder_(active_token_, video_packets_, video_frames_, input_.context(), frame_factory->get_video_format_desc().fps, filter)\r
  96                 , audio_decoder_(active_token_, audio_packets_, audio_buffers_, input_.context(), frame_factory->get_video_format_desc())\r
  97                 , muxer_(active_token_, video_frames_, audio_buffers_, muxed_frames_, video_decoder_.fps(), frame_factory)\r
  98                 , last_frame_(core::basic_frame::empty())\r
  99         {\r
 100                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 101                 graph_->start();\r
 102 \r
 103                 Concurrency::send(active_token_, true);\r
 104         }\r
 105 \r
 106         ~ffmpeg_producer()\r
 107         {\r
 108                 Concurrency::send(active_token_, false);\r
 109                 std::shared_ptr<core::basic_frame> frame;\r
 110                 Concurrency::try_receive(muxed_frames_, frame);\r
 111         }\r
 112                                         \r
 113         virtual safe_ptr<core::basic_frame> receive(int hints)\r
 114         {\r
 115                 auto frame = core::basic_frame::late();\r
 116                 \r
 117                 try\r
 118                 {               \r
 119                         frame = last_frame_ = safe_ptr<core::basic_frame>(Concurrency::receive(muxed_frames_, 8));\r
 120                 }\r
 121                 catch(Concurrency::operation_timed_out&)\r
 122                 {               \r
 123                         graph_->add_tag("underflow");   \r
 124                 }\r
 125 \r
 126                 return frame;\r
 127         }\r
 128 \r
 129         virtual safe_ptr<core::basic_frame> last_frame() const\r
 130         {\r
 131                 return disable_audio(last_frame_);\r
 132         }\r
 133         \r
 134         virtual int64_t nb_frames() const\r
 135         {\r
 136                 if(loop_)\r
 137                         return std::numeric_limits<int64_t>::max();\r
 138 \r
 139                 // This function estimates nb_frames until input has read all packets for one loop, at which point the count should be accurate.\r
 140 \r
 141                 int64_t nb_frames = input_.nb_frames();\r
 142                 if(input_.nb_loops() < 1) // input still hasn't counted all frames\r
 143                 {\r
 144                         int64_t video_nb_frames = video_decoder_.nb_frames();\r
 145                         int64_t audio_nb_frames = audio_decoder_.nb_frames();\r
 146 \r
 147                         nb_frames = std::min(static_cast<int64_t>(length_), std::max(nb_frames, std::max(video_nb_frames, audio_nb_frames)));\r
 148                 }\r
 149 \r
 150                 nb_frames = muxer_.calc_nb_frames(nb_frames);\r
 151 \r
 152                 // TODO: Might need to scale nb_frames av frame_muxer transformations.\r
 153 \r
 154                 return nb_frames - start_;\r
 155         }\r
 156                                 \r
 157         virtual std::wstring print() const\r
 158         {\r
 159                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 160                                                   + boost::lexical_cast<std::wstring>(video_decoder_.width()) + L"x" + boost::lexical_cast<std::wstring>(video_decoder_.height())\r
 161                                                   + (video_decoder_.is_progressive() ? L"p" : L"i")  + boost::lexical_cast<std::wstring>(video_decoder_.is_progressive() ? video_decoder_.fps() : 2.0 * video_decoder_.fps())\r
 162                                                   + L"]";\r
 163         }\r
 164 };\r
 165 \r
 166 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 167 {               \r
 168         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 169                 (L"mpg")(L"mpeg")(L"m2v")(L"m4v")(L"mp3")(L"mp4")(L"mpga")\r
 170                 (L"avi")\r
 171                 (L"mov")\r
 172                 (L"qt")\r
 173                 (L"webm")\r
 174                 (L"dv")         \r
 175                 (L"f4v")(L"flv")\r
 176                 (L"mkv")(L"mka")\r
 177                 (L"wmv")(L"wma")(L"wav")\r
 178                 (L"rm")(L"ram")\r
 179                 (L"ogg")(L"ogv")(L"oga")(L"ogx")\r
 180                 (L"divx")(L"xvid");\r
 181 \r
 182         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 183         \r
 184         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 185         {                                       \r
 186                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 187         });\r
 188 \r
 189         if(ext == extensions.end())\r
 190                 return core::frame_producer::empty();\r
 191 \r
 192         auto path               = filename + L"." + *ext;\r
 193         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 194         auto start              = core::get_param(L"SEEK", params, 0);\r
 195         auto length             = core::get_param(L"LENGTH", params, std::numeric_limits<size_t>::max());\r
 196         auto filter_str = core::get_param<std::wstring>(L"FILTER", params, L"");        \r
 197                 \r
 198         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 199         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 200         \r
 201         return make_safe<ffmpeg_producer>(frame_factory, path, filter_str, loop, start, length);\r
 202 }\r
 203 \r
 204 }}