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2.0. - device_buffer: Removed unnecessary glFlush.
[casparcg] / 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/utility/assert.h>\r
31 #include <common/utility/timer.h>\r
32 #include <common/diagnostics/graph.h>\r
33 \r
34 #include <core/mixer/write_frame.h>\r
35 #include <core/video_format.h>\r
36 #include <core/producer/frame/audio_transform.h>\r
37 #include <core/producer/frame/basic_frame.h>\r
38 #include <core/producer/color/color_producer.h>\r
39 \r
40 #include <common/env.h>\r
41 \r
42 #include <boost/timer.hpp>\r
43 #include <boost/range/algorithm.hpp>\r
44 #include <boost/range/algorithm_ext.hpp>\r
45 \r
46 #include <tbb/task_group.h>\r
47 \r
48 #include <deque>\r
49 #include <vector>\r
50 \r
51 namespace caspar {\r
52                         \r
53 struct ffmpeg_producer : public core::frame_producer\r
54 {\r
55         const std::wstring                                                              filename_;\r
56         \r
57         const safe_ptr<diagnostics::graph>                              graph_;\r
58         boost::timer                                                                    frame_timer_;\r
59                                         \r
60         const safe_ptr<core::frame_factory>                             frame_factory_;\r
61         const core::video_format_desc                                   format_desc_;\r
62 \r
63         input                                                                                   input_; \r
64         video_decoder                                                                   video_decoder_;\r
65         audio_decoder                                                                   audio_decoder_;\r
66         \r
67         frame_muxer                                                                             muxer_;\r
68 \r
69         const int                                                                               start_;\r
70         int64_t                                                                                 nb_frames_;\r
71         const bool                                                                              loop_;\r
72 \r
73         safe_ptr<core::basic_frame>                                             last_frame_;\r
74         \r
75         tbb::task_group                                                                 tasks_;\r
76 \r
77 public:\r
78         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
79                 : filename_(filename)\r
80                 , graph_(diagnostics::create_graph(narrow(print())))\r
81                 , frame_factory_(frame_factory)         \r
82                 , format_desc_(frame_factory->get_video_format_desc())\r
83                 , input_(graph_, filename_, loop, start, length)\r
84                 , video_decoder_(input_.context(), frame_factory, filter)\r
85                 , audio_decoder_(input_.context(), frame_factory->get_video_format_desc())\r
86                 , muxer_(video_decoder_.fps(), frame_factory)\r
87                 , start_(start)\r
88                 , nb_frames_(video_decoder_.nb_frames() - start)\r
89                 , loop_(loop)\r
90                 , last_frame_(core::basic_frame::empty())\r
91         {\r
92                 graph_->add_guide("frame-time", 0.5);\r
93                 graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
94                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));           \r
95                 \r
96                 for(int n = 0; n < 128 && muxer_.size() < 2; ++n)\r
97                         decode_frame(0);\r
98         }\r
99 \r
100         ~ffmpeg_producer()\r
101         {\r
102                 tasks_.cancel();\r
103                 tasks_.wait();\r
104         }\r
105         \r
106         virtual safe_ptr<core::basic_frame> receive(int hints)\r
107         {\r
108                 tasks_.wait();\r
109 \r
110                 auto frame = core::basic_frame::late();\r
111                 \r
112                 if(!muxer_.empty())\r
113                         frame = last_frame_ = muxer_.pop();     \r
114                 else\r
115                 {\r
116                         if(input_.eof())\r
117                                 frame =  core::basic_frame::eof();\r
118                         else\r
119                         {\r
120                                 graph_->add_tag("underflow");   \r
121                                 ++nb_frames_;           \r
122                         }\r
123                 }\r
124 \r
125                 tasks_.run([=]\r
126                 {\r
127                         frame_timer_.restart();\r
128 \r
129                         for(int n = 0; n < 64 && muxer_.size() < 2; ++n)\r
130                                 decode_frame(hints);\r
131 \r
132                         graph_->update_value("frame-time", static_cast<float>(frame_timer_.elapsed()*format_desc_.fps*0.5));\r
133                 });\r
134                 \r
135                 return frame;\r
136         }\r
137 \r
138         virtual safe_ptr<core::basic_frame> last_frame() const\r
139         {\r
140                 return disable_audio(last_frame_);\r
141         }\r
142 \r
143         void decode_frame(int hints)\r
144         {\r
145                 for(int n = 0; n < 32 && ((!muxer_.video_ready() && !video_decoder_.ready()) || (!muxer_.audio_ready() && !audio_decoder_.ready())); ++n) \r
146                 {\r
147                         std::shared_ptr<AVPacket> pkt;\r
148                         if(input_.try_pop(pkt))\r
149                         {\r
150                                 video_decoder_.push(pkt);\r
151                                 audio_decoder_.push(pkt);\r
152                         }\r
153                 }\r
154 \r
155                 decltype(video_decoder_.poll()) video_frames;\r
156                 decltype(audio_decoder_.poll()) audio_samples;\r
157                 \r
158                 tbb::parallel_invoke(\r
159                 [&]\r
160                 {\r
161                         if(!muxer_.video_ready())\r
162                                 video_frames = video_decoder_.poll();\r
163                 },\r
164                 [&]\r
165                 {\r
166                         if(!muxer_.audio_ready())\r
167                                 audio_samples = audio_decoder_.poll();\r
168                 });\r
169                 \r
170                 BOOST_FOREACH(auto& audio, audio_samples)\r
171                         muxer_.push(audio);\r
172 \r
173                 BOOST_FOREACH(auto& video, video_frames)                \r
174                         muxer_.push(video, hints);              \r
175         }\r
176 \r
177         virtual int64_t nb_frames() const\r
178         {\r
179                 return loop_ ? 0 : nb_frames_;\r
180         }\r
181                                 \r
182         virtual std::wstring print() const\r
183         {\r
184                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
185         }\r
186 };\r
187 \r
188 safe_ptr<core::frame_producer> create_ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
189 {               \r
190         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
191                 (L"mpg")(L"mpeg")(L"avi")(L"mov")(L"qt")(L"webm")(L"dv")(L"mp4")(L"f4v")(L"flv")(L"mkv")(L"mka")(L"wmv")(L"wma")(L"ogg")(L"divx")(L"xvid")(L"wav")(L"mp3")(L"m2v");\r
192         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
193         \r
194         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
195         {                                       \r
196                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
197         });\r
198 \r
199         if(ext == extensions.end())\r
200                 return core::frame_producer::empty();\r
201 \r
202         std::wstring path = filename + L"." + *ext;\r
203         bool loop = boost::find(params, L"LOOP") != params.end();\r
204 \r
205         int start = -1;\r
206         int length = -1;\r
207         \r
208         auto seek_it = std::find(params.begin(), params.end(), L"SEEK");\r
209         if(seek_it != params.end())\r
210         {\r
211                 if(++seek_it != params.end())\r
212                         start = boost::lexical_cast<int>(*seek_it);\r
213         }\r
214 \r
215         std::wstring filter = L"";\r
216         auto filter_it = std::find(params.begin(), params.end(), L"FILTER");\r
217         if(filter_it != params.end())\r
218         {\r
219                 if(++filter_it != params.end())\r
220                         filter = *filter_it;\r
221         }\r
222 \r
223         return make_safe<ffmpeg_producer>(frame_factory, path, filter, loop, start, length);\r
224 }\r
225 \r
226 }