git.sesse.net Git - casparcg/blob - modules/ffmpeg/ffmpeg.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 "consumer/ffmpeg_consumer.h"\r
  23 #include "producer/ffmpeg_producer.h"\r
  24 \r
  25 #include <core/consumer/frame_consumer.h>\r
  26 #include <core/producer/frame_producer.h>\r
  27 \r
  28 #include <tbb/mutex.h>\r
  29 \r
  30 #if defined(_MSC_VER)\r
  31 #pragma warning (disable : 4244)\r
  32 #endif\r
  33 \r
  34 extern "C" \r
  35 {\r
  36         #define __STDC_CONSTANT_MACROS\r
  37         #define __STDC_LIMIT_MACROS\r
  38         #include <libavformat/avformat.h>\r
  39         #include <libswscale/swscale.h>\r
  40         #include <libavutil/avutil.h>\r
  41         #include <libavfilter/avfilter.h>\r
  42 }\r
  43 \r
  44 namespace caspar {\r
  45         \r
  46 int ffmpeg_lock_callback(void **mutex, enum AVLockOp op) \r
  47 { \r
  48         static tbb::mutex                               container_mutex;\r
  49         static std::vector<tbb::mutex>  container; \r
  50 \r
  51         if(!mutex)\r
  52                 return 0;\r
  53 \r
  54         auto my_mutex = reinterpret_cast<tbb::mutex*>(*mutex);\r
  55         \r
  56         switch(op) \r
  57         { \r
  58                 case AV_LOCK_CREATE: \r
  59                 { \r
  60                         tbb::mutex::scoped_lock lock(container_mutex);\r
  61                         container.push_back(tbb::mutex());\r
  62                         *mutex = &container.back(); \r
  63                         break; \r
  64                 } \r
  65                 case AV_LOCK_OBTAIN: \r
  66                 { \r
  67                         if(my_mutex)\r
  68                                 my_mutex->lock(); \r
  69                         break; \r
  70                 } \r
  71                 case AV_LOCK_RELEASE: \r
  72                 { \r
  73                         if(my_mutex)\r
  74                                 my_mutex->unlock(); \r
  75                         break; \r
  76                 } \r
  77                 case AV_LOCK_DESTROY: \r
  78                 { \r
  79                         tbb::mutex::scoped_lock lock(container_mutex);\r
  80                         container.erase(std::remove_if(container.begin(), container.end(), [&](const tbb::mutex& m)\r
  81                         {\r
  82                                 return &m == my_mutex;\r
  83                         }), container.end());\r
  84                         break; \r
  85                 } \r
  86         } \r
  87         return 0; \r
  88 } \r
  89 \r
  90 void init_ffmpeg()\r
  91 {\r
  92         av_register_all();\r
  93         avcodec_init();\r
  94         av_lockmgr_register(ffmpeg_lock_callback);\r
  95         \r
  96         core::register_consumer_factory([](const std::vector<std::wstring>& params){return create_ffmpeg_consumer(params);});\r
  97         core::register_producer_factory(create_ffmpeg_producer);\r
  98 }\r
  99 \r
 100 void uninit_ffmpeg()\r
 101 {\r
 102         av_lockmgr_register(nullptr);\r
 103 }\r
 104 \r
 105 std::wstring make_version(unsigned int ver)\r
 106 {\r
 107         std::wstringstream str;\r
 108         str << ((ver >> 16) & 0xFF) << L"." << ((ver >> 8) & 0xFF) << L"." << ((ver >> 0) & 0xFF);\r
 109         return str.str();\r
 110 }\r
 111 \r
 112 std::wstring get_avcodec_version()\r
 113 {\r
 114         return make_version(avcodec_version());\r
 115 }\r
 116 \r
 117 std::wstring get_avformat_version()\r
 118 {\r
 119         return make_version(avformat_version());\r
 120 }\r
 121 \r
 122 std::wstring get_avutil_version()\r
 123 {\r
 124         return make_version(avutil_version());\r
 125 }\r
 126 \r
 127 std::wstring get_avfilter_version()\r
 128 {\r
 129         return make_version(avfilter_version());\r
 130 }\r
 131 \r
 132 std::wstring get_swscale_version()\r
 133 {\r
 134         return make_version(swscale_version());\r
 135 }\r
 136 \r
 137 }