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

   1 #pragma once\r
   2 \r
   3 #include <tbb/concurrent_unordered_map.h>\r
   4 #include <tbb/concurrent_queue.h>\r
   5 \r
   6 #include <core/producer/frame/pixel_format.h>\r
   7 #include <core/producer/frame/image_transform.h>\r
   8 #include <core/producer/frame/frame_factory.h>\r
   9 #include <core/mixer/write_frame.h>\r
  10 \r
  11 #if defined(_MSC_VER)\r
  12 #pragma warning (push)\r
  13 #pragma warning (disable : 4244)\r
  14 #endif\r
  15 extern "C" \r
  16 {\r
  17         #include <libswscale/swscale.h>\r
  18         #include <libavcodec/avcodec.h>\r
  19         #include <libavfilter/avfilter.h>\r
  20 }\r
  21 #if defined(_MSC_VER)\r
  22 #pragma warning (pop)\r
  23 #endif\r
  24 \r
  25 namespace caspar {\r
  26 \r
  27 static core::pixel_format::type get_pixel_format(PixelFormat pix_fmt)\r
  28 {\r
  29         switch(pix_fmt)\r
  30         {\r
  31         case PIX_FMT_GRAY8:             return core::pixel_format::gray;\r
  32         case PIX_FMT_BGRA:              return core::pixel_format::bgra;\r
  33         case PIX_FMT_ARGB:              return core::pixel_format::argb;\r
  34         case PIX_FMT_RGBA:              return core::pixel_format::rgba;\r
  35         case PIX_FMT_ABGR:              return core::pixel_format::abgr;\r
  36         case PIX_FMT_YUV444P:   return core::pixel_format::ycbcr;\r
  37         case PIX_FMT_YUV422P:   return core::pixel_format::ycbcr;\r
  38         case PIX_FMT_YUV420P:   return core::pixel_format::ycbcr;\r
  39         case PIX_FMT_YUV411P:   return core::pixel_format::ycbcr;\r
  40         case PIX_FMT_YUV410P:   return core::pixel_format::ycbcr;\r
  41         case PIX_FMT_YUVA420P:  return core::pixel_format::ycbcra;\r
  42         default:                                return core::pixel_format::invalid;\r
  43         }\r
  44 }\r
  45 \r
  46 static PixelFormat get_ffmpeg_pixel_format(const core::pixel_format_desc& format_desc)\r
  47 {\r
  48         switch(format_desc.pix_fmt)\r
  49         {\r
  50         case core::pixel_format::gray: return PIX_FMT_GRAY8;\r
  51         case core::pixel_format::bgra: return PIX_FMT_BGRA;\r
  52         case core::pixel_format::argb: return PIX_FMT_ARGB;\r
  53         case core::pixel_format::rgba: return PIX_FMT_RGBA;\r
  54         case core::pixel_format::abgr: return PIX_FMT_ABGR;\r
  55         case core::pixel_format::ycbcra: return PIX_FMT_YUVA420P;\r
  56         case core::pixel_format::ycbcr:\r
  57                 auto planes = format_desc.planes;\r
  58                 if(planes[0].height == planes[1].height)\r
  59                 {\r
  60                         if(planes[0].width == planes[1].width)\r
  61                                 return PIX_FMT_YUV444P;\r
  62                         else if(planes[0].width/2 == planes[1].width)\r
  63                                 return PIX_FMT_YUV422P;\r
  64                         else if(planes[0].width/4 == planes[1].width)\r
  65                                 return PIX_FMT_YUV411P;\r
  66                 }\r
  67                 if(planes[0].height/2 == planes[1].height)\r
  68                 {\r
  69                         if(planes[0].width/2 == planes[1].width)\r
  70                                 return PIX_FMT_YUV420P;\r
  71                 }\r
  72                 if(planes[0].height/4 == planes[1].height)\r
  73                 {\r
  74                         if(planes[0].width/4 == planes[1].width)\r
  75                                 return PIX_FMT_YUV410P;\r
  76                 }\r
  77         }\r
  78         return PIX_FMT_NONE;\r
  79 }\r
  80 \r
  81 static safe_ptr<AVFrame> as_av_frame(const safe_ptr<core::write_frame>& frame)\r
  82 {\r
  83         auto desc = frame->get_pixel_format_desc();\r
  84         safe_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);     \r
  85         avcodec_get_frame_defaults(av_frame.get());\r
  86 \r
  87         for(size_t n = 0; n < desc.planes.size(); ++n)\r
  88         {       \r
  89                 av_frame->data[n]               = frame->image_data(n).begin();\r
  90                 av_frame->linesize[n]   = desc.planes[n].width;\r
  91         }\r
  92 \r
  93         av_frame->format        = get_ffmpeg_pixel_format(desc);\r
  94         av_frame->width         = desc.planes[0].width;\r
  95         av_frame->height        = desc.planes[0].height;\r
  96 \r
  97         if(frame->get_type() != core::video_mode::progressive)\r
  98         {\r
  99                 av_frame->interlaced_frame = 1;\r
 100                 av_frame->top_field_first = frame->get_type() == core::video_mode::upper ? 1 : 0;\r
 101         }\r
 102 \r
 103         return av_frame;\r
 104 }\r
 105 \r
 106 static core::pixel_format_desc get_pixel_format_desc(PixelFormat pix_fmt, size_t width, size_t height)\r
 107 {\r
 108         // Get linesizes\r
 109         AVPicture dummy_pict;   \r
 110         avpicture_fill(&dummy_pict, nullptr, pix_fmt, width, height);\r
 111 \r
 112         core::pixel_format_desc desc;\r
 113         desc.pix_fmt = get_pixel_format(pix_fmt);\r
 114                 \r
 115         switch(desc.pix_fmt)\r
 116         {\r
 117         case core::pixel_format::gray:\r
 118                 {\r
 119                         desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[0]/4, height, 1));                                             \r
 120                         return desc;\r
 121                 }\r
 122         case core::pixel_format::bgra:\r
 123         case core::pixel_format::argb:\r
 124         case core::pixel_format::rgba:\r
 125         case core::pixel_format::abgr:\r
 126                 {\r
 127                         desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[0]/4, height, 4));                                             \r
 128                         return desc;\r
 129                 }\r
 130         case core::pixel_format::ycbcr:\r
 131         case core::pixel_format::ycbcra:\r
 132                 {               \r
 133                         // Find chroma height\r
 134                         size_t size2 = dummy_pict.data[2] - dummy_pict.data[1];\r
 135                         size_t h2 = size2/dummy_pict.linesize[1];                       \r
 136 \r
 137                         desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[0], height, 1));\r
 138                         desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[1], h2, 1));\r
 139                         desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[2], h2, 1));\r
 140 \r
 141                         if(desc.pix_fmt == core::pixel_format::ycbcra)                                          \r
 142                                 desc.planes.push_back(core::pixel_format_desc::plane(dummy_pict.linesize[3], height, 1));       \r
 143                         return desc;\r
 144                 }               \r
 145         default:                \r
 146                 desc.pix_fmt = core::pixel_format::invalid;\r
 147                 return desc;\r
 148         }\r
 149 }\r
 150 \r
 151 static safe_ptr<core::write_frame> make_write_frame(const void* tag, const safe_ptr<AVFrame>& decoded_frame, const safe_ptr<core::frame_factory>& frame_factory)\r
 152 {                       \r
 153         static tbb::concurrent_unordered_map<size_t, tbb::concurrent_queue<std::shared_ptr<SwsContext>>> sws_contexts_;\r
 154 \r
 155         auto width   = decoded_frame->width;\r
 156         auto height  = decoded_frame->height;\r
 157         auto pix_fmt = static_cast<PixelFormat>(decoded_frame->format);\r
 158         auto desc        = get_pixel_format_desc(pix_fmt, width, height);\r
 159                                 \r
 160         auto write = frame_factory->create_frame(tag, desc.pix_fmt != core::pixel_format::invalid ? desc : get_pixel_format_desc(PIX_FMT_BGRA, width, height));\r
 161         if(decoded_frame->interlaced_frame)\r
 162                 write->set_type(decoded_frame->top_field_first ? core::video_mode::upper : core::video_mode::lower);\r
 163         else\r
 164                 write->set_type(core::video_mode::progressive);\r
 165 \r
 166         if(desc.pix_fmt == core::pixel_format::invalid)\r
 167         {\r
 168                 std::shared_ptr<SwsContext> sws_context;\r
 169 \r
 170                 //CASPAR_LOG(warning) << "Hardware accelerated color transform not supported.";\r
 171 \r
 172                 size_t key = width << 20 | height << 8 | pix_fmt;\r
 173                         \r
 174                 auto& pool = sws_contexts_[key];\r
 175                                                 \r
 176                 if(!pool.try_pop(sws_context))\r
 177                 {\r
 178                         double param;\r
 179                         sws_context.reset(sws_getContext(width, height, pix_fmt, width, height, PIX_FMT_BGRA, SWS_BILINEAR, nullptr, nullptr, &param), sws_freeContext);\r
 180                 }\r
 181                         \r
 182                 if(!sws_context)\r
 183                 {\r
 184                         BOOST_THROW_EXCEPTION(operation_failed() << msg_info("Could not create software scaling context.") << \r
 185                                                                         boost::errinfo_api_function("sws_getContext"));\r
 186                 }       \r
 187 \r
 188                 // Use sws_scale when provided colorspace has no hw-accel.\r
 189                 safe_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);     \r
 190                 avcodec_get_frame_defaults(av_frame.get());                     \r
 191                 avpicture_fill(reinterpret_cast<AVPicture*>(av_frame.get()), write->image_data().begin(), PIX_FMT_BGRA, width, height);\r
 192                  \r
 193                 sws_scale(sws_context.get(), decoded_frame->data, decoded_frame->linesize, 0, height, av_frame->data, av_frame->linesize);      \r
 194                 pool.push(sws_context);\r
 195 \r
 196                 write->commit();\r
 197         }\r
 198         else\r
 199         {\r
 200                 tbb::parallel_for(0, static_cast<int>(desc.planes.size()), 1, [&](int n)\r
 201                 {\r
 202                         auto plane            = desc.planes[n];\r
 203                         auto result           = write->image_data(n).begin();\r
 204                         auto decoded          = decoded_frame->data[n];\r
 205                         auto decoded_linesize = decoded_frame->linesize[n];\r
 206                                 \r
 207                         // Copy line by line since ffmpeg sometimes pads each line.\r
 208                         tbb::parallel_for(tbb::blocked_range<size_t>(0, static_cast<int>(desc.planes[n].height)), [&](const tbb::blocked_range<size_t>& r)\r
 209                         {\r
 210                                 for(size_t y = r.begin(); y != r.end(); ++y)\r
 211                                         memcpy(result + y*plane.linesize, decoded + y*decoded_linesize, plane.linesize);\r
 212                         });\r
 213 \r
 214                         write->commit(n);\r
 215                 });\r
 216         }\r
 217 \r
 218         return write;\r
 219 }\r
 220 \r
 221 }