git.sesse.net Git - casparcg/blob - modules/ffmpeg/ffmpeg_error.h

   1 #pragma once\r
   2 \r
   3 #include <common/exception/exceptions.h>\r
   4 #include <common/utility/string.h>\r
   5 \r
   6 #include <string>\r
   7 \r
   8 #pragma warning(push, 1)\r
   9 \r
  10 extern "C" \r
  11 {\r
  12 #include <libavutil/error.h>\r
  13 }\r
  14 \r
  15 #pragma warning(pop)\r
  16 \r
  17 namespace caspar { namespace ffmpeg {\r
  18 \r
  19 struct ffmpeg_error : virtual caspar_exception{};\r
  20 struct ffmpeg_stream_not_found : virtual ffmpeg_error{};\r
  21 \r
  22 static std::string av_error_str(int errn)\r
  23 {\r
  24         char buf[256];\r
  25         memset(buf, 0, 256);\r
  26         if(av_strerror(errn, buf, 256) < 0)\r
  27                 return "";\r
  28         return std::string(buf);\r
  29 }\r
  30 \r
  31 #define THROW_ON_ERROR(ret, source, func)                                                       \\r
  32         if(ret < 0)                                                                                                             \\r
  33         {                                                                                                                               \\r
  34                 BOOST_THROW_EXCEPTION(                                                                          \\r
  35                         ffmpeg_error() <<                                                                               \\r
  36                         msg_info(av_error_str(ret)) <<                                                  \\r
  37                         source_info(narrow(source)) <<                                                  \\r
  38                         boost::errinfo_api_function(func) <<                                    \\r
  39                         boost::errinfo_errno(AVUNERROR(ret)));                                  \\r
  40         }\r
  41 \r
  42 #define THROW_ON_ERROR_STR_(call) #call\r
  43 #define THROW_ON_ERROR_STR(call) THROW_ON_ERROR_STR_(call)\r
  44 \r
  45 #define THROW_ON_ERROR3(call, source, exception)                                                                                \\r
  46         [&]() -> int                                                                                                                    \\r
  47         {                                                                                                                                               \\r
  48                 int ret = call;                                                                                                         \\r
  49                 if(ret < 0)                                                                                                                     \\r
  50                 {                                                                                                                                       \\r
  51                         BOOST_THROW_EXCEPTION(                                                                                  \\r
  52                                 exception() <<                                                                                  \\r
  53                                 msg_info(av_error_str(ret)) <<                                                          \\r
  54                                 source_info(narrow(source)) <<                                                          \\r
  55                                 boost::errinfo_api_function(THROW_ON_ERROR_STR(call)) <<        \\r
  56                                 boost::errinfo_errno(AVUNERROR(ret)));                                          \\r
  57                 }                                                                                                                                       \\r
  58                 return ret;                                                                                                                     \\r
  59         }()\r
  60 #define THROW_ON_ERROR2(call, source) THROW_ON_ERROR3(call, source, ffmpeg_error)\r
  61 \r
  62 }}