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