git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/filter/filter.cpp

   1 #include "../../stdafx.h"\r
   2 \r
   3 #include "filter.h"\r
   4 \r
   5 #include "parallel_yadif.h"\r
   6 \r
   7 #include "../../ffmpeg_error.h"\r
   8 \r
   9 #include <common/exception/exceptions.h>\r
  10 \r
  11 #include <boost/assign.hpp>\r
  12 \r
  13 #include <cstdio>\r
  14 #include <sstream>\r
  15 \r
  16 #if defined(_MSC_VER)\r
  17 #pragma warning (push)\r
  18 #pragma warning (disable : 4244)\r
  19 #endif\r
  20 extern "C" \r
  21 {\r
  22         #include <libavutil/avutil.h>\r
  23         #include <libavutil/imgutils.h>\r
  24         #include <libavfilter/avfilter.h>\r
  25         #include <libavfilter/avcodec.h>\r
  26         #include <libavfilter/avfiltergraph.h>\r
  27         #include <libavfilter/buffersink.h>\r
  28         #include <libavfilter/vsrc_buffer.h>\r
  29 }\r
  30 #if defined(_MSC_VER)\r
  31 #pragma warning (pop)\r
  32 #endif\r
  33 \r
  34 namespace caspar { namespace ffmpeg {\r
  35         \r
  36 struct filter::implementation\r
  37 {\r
  38         std::string                                             filters_;\r
  39         std::shared_ptr<AVFilterGraph>  graph_; \r
  40         AVFilterContext*                                buffersink_ctx_;\r
  41         AVFilterContext*                                buffersrc_ctx_;\r
  42         std::shared_ptr<void>                   parallel_yadif_ctx_;\r
  43         std::vector<PixelFormat>                pix_fmts_;\r
  44         std::queue<std::shared_ptr<AVFrame>> bypass_;\r
  45                 \r
  46         implementation(const std::wstring& filters, const std::vector<PixelFormat>& pix_fmts) \r
  47                 : filters_(narrow(filters))\r
  48                 , parallel_yadif_ctx_(nullptr)\r
  49                 , pix_fmts_(pix_fmts)\r
  50         {\r
  51                 if(pix_fmts_.empty())\r
  52                 {\r
  53                         pix_fmts_.push_back(PIX_FMT_YUV420P);\r
  54                         pix_fmts_.push_back(PIX_FMT_YUVA420P);\r
  55                         pix_fmts_.push_back(PIX_FMT_YUV422P);\r
  56                         pix_fmts_.push_back(PIX_FMT_YUV444P);\r
  57                         pix_fmts_.push_back(PIX_FMT_YUV411P);\r
  58                         pix_fmts_.push_back(PIX_FMT_ARGB);\r
  59                         pix_fmts_.push_back(PIX_FMT_RGBA);\r
  60                         pix_fmts_.push_back(PIX_FMT_ABGR);\r
  61                         pix_fmts_.push_back(PIX_FMT_GRAY8);\r
  62                         pix_fmts_.push_back(PIX_FMT_NONE);\r
  63                 }\r
  64                 else\r
  65                         pix_fmts_.push_back(PIX_FMT_NONE);\r
  66 \r
  67                 std::transform(filters_.begin(), filters_.end(), filters_.begin(), ::tolower);\r
  68         }\r
  69         \r
  70         void push(const std::shared_ptr<AVFrame>& frame)\r
  71         {               \r
  72                 if(!frame)\r
  73                         return;\r
  74 \r
  75                 if(frame->data[0] == nullptr || frame->width < 1)\r
  76                         BOOST_THROW_EXCEPTION(invalid_argument());\r
  77 \r
  78                 if(filters_.empty())\r
  79                 {\r
  80                         bypass_.push(frame);\r
  81                         return;\r
  82                 }\r
  83                 \r
  84                 try\r
  85                 {\r
  86                         if(!graph_)\r
  87                         {\r
  88                                 try\r
  89                                 {\r
  90                                         graph_.reset(avfilter_graph_alloc(), [](AVFilterGraph* p){avfilter_graph_free(&p);});\r
  91                                                                 \r
  92                                         // Input\r
  93                                         std::stringstream args;\r
  94                                         args << frame->width << ":" << frame->height << ":" << frame->format << ":" << 0 << ":" << 0 << ":" << 0 << ":" << 0; // don't care about pts and aspect_ratio\r
  95                                         THROW_ON_ERROR2(avfilter_graph_create_filter(&buffersrc_ctx_, avfilter_get_by_name("buffer"), "src", args.str().c_str(), NULL, graph_.get()), "[filter]");\r
  96 \r
  97                                         // OPIX_FMT_BGRAutput\r
  98                                         AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();\r
  99                                         buffersink_params->pixel_fmts = pix_fmts_.data();\r
 100                                         THROW_ON_ERROR2(avfilter_graph_create_filter(&buffersink_ctx_, avfilter_get_by_name("buffersink"), "out", NULL, buffersink_params, graph_.get()), "[filter]");\r
 101                         \r
 102                                         AVFilterInOut* outputs = avfilter_inout_alloc();\r
 103                                         AVFilterInOut* inputs  = avfilter_inout_alloc();\r
 104                         \r
 105                                         outputs->name                   = av_strdup("in");\r
 106                                         outputs->filter_ctx             = buffersrc_ctx_;\r
 107                                         outputs->pad_idx                = 0;\r
 108                                         outputs->next                   = NULL;\r
 109 \r
 110                                         inputs->name                    = av_strdup("out");\r
 111                                         inputs->filter_ctx              = buffersink_ctx_;\r
 112                                         inputs->pad_idx                 = 0;\r
 113                                         inputs->next                    = NULL;\r
 114                         \r
 115                                         THROW_ON_ERROR2(avfilter_graph_parse(graph_.get(), filters_.c_str(), &inputs, &outputs, NULL), "[filter]");\r
 116                         \r
 117                                         avfilter_inout_free(&inputs);\r
 118                                         avfilter_inout_free(&outputs);\r
 119 \r
 120                                         THROW_ON_ERROR2(avfilter_graph_config(graph_.get(), NULL), "[filter]");                 \r
 121 \r
 122                                         for(size_t n = 0; n < graph_->filter_count; ++n)\r
 123                                         {\r
 124                                                 auto filter_name = graph_->filters[n]->name;\r
 125                                                 if(strstr(filter_name, "yadif") != 0)\r
 126                                                         parallel_yadif_ctx_ = make_parallel_yadif(graph_->filters[n]);\r
 127                                         }\r
 128                                 }\r
 129                                 catch(...)\r
 130                                 {\r
 131                                         graph_ = nullptr;\r
 132                                         throw;\r
 133                                 }\r
 134                         }\r
 135                 \r
 136                         THROW_ON_ERROR2(av_vsrc_buffer_add_frame(buffersrc_ctx_, frame.get(), 0), "[filter]");\r
 137                 }\r
 138                 catch(ffmpeg_error&)\r
 139                 {\r
 140                         throw;\r
 141                 }\r
 142                 catch(...)\r
 143                 {\r
 144                         BOOST_THROW_EXCEPTION(ffmpeg_error() << boost::errinfo_nested_exception(boost::current_exception()));\r
 145                 }\r
 146         }\r
 147 \r
 148         std::shared_ptr<AVFrame> poll()\r
 149         {\r
 150                 if(filters_.empty())\r
 151                 {\r
 152                         if(bypass_.empty())\r
 153                                 return nullptr;\r
 154                         auto frame = bypass_.front();\r
 155                         bypass_.pop();\r
 156                         return frame;\r
 157                 }\r
 158 \r
 159                 if(!graph_)\r
 160                         return nullptr;\r
 161                 \r
 162                 try\r
 163                 {\r
 164                         if(avfilter_poll_frame(buffersink_ctx_->inputs[0])) \r
 165                         {\r
 166                                 AVFilterBufferRef *picref;\r
 167                                 THROW_ON_ERROR2(av_buffersink_get_buffer_ref(buffersink_ctx_, &picref, 0), "[filter]");\r
 168 \r
 169                                 if (picref) \r
 170                                 {               \r
 171                                         safe_ptr<AVFrame> frame(avcodec_alloc_frame(), [=](AVFrame* p)\r
 172                                         {\r
 173                                                 av_free(p);\r
 174                                                 avfilter_unref_buffer(picref);\r
 175                                         });\r
 176 \r
 177                                         avcodec_get_frame_defaults(frame.get());        \r
 178 \r
 179                                         memcpy(frame->data,     picref->data,     sizeof(frame->data));\r
 180                                         memcpy(frame->linesize, picref->linesize, sizeof(frame->linesize));\r
 181                                         frame->format                           = picref->format;\r
 182                                         frame->width                            = picref->video->w;\r
 183                                         frame->height                           = picref->video->h;\r
 184                                         frame->pkt_pos                          = picref->pos;\r
 185                                         frame->interlaced_frame         = picref->video->interlaced;\r
 186                                         frame->top_field_first          = picref->video->top_field_first;\r
 187                                         frame->key_frame                        = picref->video->key_frame;\r
 188                                         frame->pict_type                        = picref->video->pict_type;\r
 189                                         frame->sample_aspect_ratio      = picref->video->sample_aspect_ratio;\r
 190 \r
 191                                         return frame;\r
 192                                 }\r
 193                         }\r
 194                 }\r
 195                 catch(ffmpeg_error&)\r
 196                 {\r
 197                         throw;\r
 198                 }\r
 199                 catch(...)\r
 200                 {\r
 201                         BOOST_THROW_EXCEPTION(ffmpeg_error() << boost::errinfo_nested_exception(boost::current_exception()));\r
 202                 }\r
 203 \r
 204                 return nullptr;\r
 205         }\r
 206 };\r
 207 \r
 208 filter::filter(const std::wstring& filters, const std::vector<PixelFormat>& pix_fmts) : impl_(new implementation(filters, pix_fmts)){}\r
 209 filter::filter(filter&& other) : impl_(std::move(other.impl_)){}\r
 210 filter& filter::operator=(filter&& other){impl_ = std::move(other.impl_); return *this;}\r
 211 void filter::push(const std::shared_ptr<AVFrame>& frame){impl_->push(frame);}\r
 212 std::shared_ptr<AVFrame> filter::poll(){return impl_->poll();}\r
 213 std::string filter::filter_str() const{return impl_->filters_;}\r
 214 std::vector<safe_ptr<AVFrame>> filter::poll_all()\r
 215 {       \r
 216         std::vector<safe_ptr<AVFrame>> frames;\r
 217         for(auto frame = poll(); frame; frame = poll())\r
 218                 frames.push_back(make_safe_ptr(frame));\r
 219         return frames;\r
 220 }\r
 221 \r
 222 }}