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