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

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../../stdafx.h"\r
  23 \r
  24 #include "filter.h"\r
  25 \r
  26 #include "parallel_yadif.h"\r
  27 \r
  28 #include "../../ffmpeg_error.h"\r
  29 \r
  30 #include <common/exception/exceptions.h>\r
  31 \r
  32 #include <boost/assign.hpp>\r
  33 \r
  34 #include <cstdio>\r
  35 #include <sstream>\r
  36 \r
  37 #if defined(_MSC_VER)\r
  38 #pragma warning (push)\r
  39 #pragma warning (disable : 4244)\r
  40 #endif\r
  41 extern "C" \r
  42 {\r
  43         #include <libavutil/avutil.h>\r
  44         #include <libavutil/imgutils.h>\r
  45         #include <libavfilter/avfilter.h>\r
  46         #include <libavfilter/avcodec.h>\r
  47         #include <libavfilter/avfiltergraph.h>\r
  48         #include <libavfilter/buffersink.h>\r
  49         #include <libavfilter/vsrc_buffer.h>\r
  50 }\r
  51 #if defined(_MSC_VER)\r
  52 #pragma warning (pop)\r
  53 #endif\r
  54 \r
  55 namespace caspar { namespace ffmpeg {\r
  56         \r
  57 struct filter::implementation\r
  58 {\r
  59         std::string                                             filters_;\r
  60         std::shared_ptr<AVFilterGraph>  graph_; \r
  61         AVFilterContext*                                buffersink_ctx_;\r
  62         AVFilterContext*                                buffersrc_ctx_;\r
  63         std::shared_ptr<void>                   parallel_yadif_ctx_;\r
  64         std::vector<PixelFormat>                pix_fmts_;\r
  65         std::queue<std::shared_ptr<AVFrame>> bypass_;\r
  66                 \r
  67         implementation(const std::wstring& filters, const std::vector<PixelFormat>& pix_fmts) \r
  68                 : filters_(narrow(filters))\r
  69                 , parallel_yadif_ctx_(nullptr)\r
  70                 , pix_fmts_(pix_fmts)\r
  71         {\r
  72                 if(pix_fmts_.empty())\r
  73                 {\r
  74                         pix_fmts_.push_back(PIX_FMT_YUVA420P);\r
  75                         pix_fmts_.push_back(PIX_FMT_YUV444P);\r
  76                         pix_fmts_.push_back(PIX_FMT_YUV422P);\r
  77                         pix_fmts_.push_back(PIX_FMT_YUV420P);\r
  78                         pix_fmts_.push_back(PIX_FMT_YUV411P);\r
  79                         pix_fmts_.push_back(PIX_FMT_BGRA);\r
  80                         pix_fmts_.push_back(PIX_FMT_ARGB);\r
  81                         pix_fmts_.push_back(PIX_FMT_RGBA);\r
  82                         pix_fmts_.push_back(PIX_FMT_ABGR);\r
  83                         pix_fmts_.push_back(PIX_FMT_GRAY8);\r
  84                         pix_fmts_.push_back(PIX_FMT_NONE);\r
  85                 }\r
  86                 else\r
  87                         pix_fmts_.push_back(PIX_FMT_NONE);\r
  88 \r
  89                 std::transform(filters_.begin(), filters_.end(), filters_.begin(), ::tolower);\r
  90         }\r
  91         \r
  92         void push(const std::shared_ptr<AVFrame>& frame)\r
  93         {               \r
  94                 if(!frame)\r
  95                         return;\r
  96 \r
  97                 if(frame->data[0] == nullptr || frame->width < 1)\r
  98                         BOOST_THROW_EXCEPTION(invalid_argument());\r
  99 \r
 100                 if(filters_.empty())\r
 101                 {\r
 102                         bypass_.push(frame);\r
 103                         return;\r
 104                 }\r
 105                 \r
 106                 try\r
 107                 {\r
 108                         if(!graph_)\r
 109                         {\r
 110                                 try\r
 111                                 {\r
 112                                         graph_.reset(avfilter_graph_alloc(), [](AVFilterGraph* p){avfilter_graph_free(&p);});\r
 113                                                                 \r
 114                                         // Input\r
 115                                         std::stringstream args;\r
 116                                         args << frame->width << ":" << frame->height << ":" << frame->format << ":" << 0 << ":" << 0 << ":" << 0 << ":" << 0; // don't care about pts and aspect_ratio\r
 117                                         THROW_ON_ERROR2(avfilter_graph_create_filter(&buffersrc_ctx_, avfilter_get_by_name("buffer"), "src", args.str().c_str(), NULL, graph_.get()), "[filter]");\r
 118
 119 #if FF_API_OLD_VSINK_API\r
 120                                         THROW_ON_ERROR2(avfilter_graph_create_filter(&buffersink_ctx_, avfilter_get_by_name("buffersink"), "out", NULL, pix_fmts_.data(), graph_.get()), "[filter]");\r
 121 #else\r
 122                                         safe_ptr<AVBufferSinkParams> buffersink_params(av_buffersink_params_alloc(), av_free);\r
 123                                         buffersink_params->pixel_fmts = pix_fmts_.data();\r
 124                                         THROW_ON_ERROR2(avfilter_graph_create_filter(&buffersink_ctx_, avfilter_get_by_name("buffersink"), "out", NULL, buffersink_params.get(), graph_.get()), "[filter]");\r
 125 #endif\r
 126                                         AVFilterInOut* outputs = avfilter_inout_alloc();\r
 127                                         AVFilterInOut* inputs  = avfilter_inout_alloc();\r
 128                         \r
 129                                         outputs->name                   = av_strdup("in");\r
 130                                         outputs->filter_ctx             = buffersrc_ctx_;\r
 131                                         outputs->pad_idx                = 0;\r
 132                                         outputs->next                   = NULL;\r
 133 \r
 134                                         inputs->name                    = av_strdup("out");\r
 135                                         inputs->filter_ctx              = buffersink_ctx_;\r
 136                                         inputs->pad_idx                 = 0;\r
 137                                         inputs->next                    = NULL;\r
 138                         \r
 139                                         THROW_ON_ERROR2(avfilter_graph_parse(graph_.get(), filters_.c_str(), &inputs, &outputs, NULL), "[filter]");\r
 140                         \r
 141                                         avfilter_inout_free(&inputs);\r
 142                                         avfilter_inout_free(&outputs);\r
 143 \r
 144                                         THROW_ON_ERROR2(avfilter_graph_config(graph_.get(), NULL), "[filter]");                 \r
 145 \r
 146                                         for(size_t n = 0; n < graph_->filter_count; ++n)\r
 147                                         {\r
 148                                                 auto filter_name = graph_->filters[n]->name;\r
 149                                                 if(strstr(filter_name, "yadif") != 0)\r
 150                                                         parallel_yadif_ctx_ = make_parallel_yadif(graph_->filters[n]);\r
 151                                         }\r
 152                                 }\r
 153                                 catch(...)\r
 154                                 {\r
 155                                         graph_ = nullptr;\r
 156                                         throw;\r
 157                                 }\r
 158                         }\r
 159                 \r
 160                         THROW_ON_ERROR2(av_vsrc_buffer_add_frame(buffersrc_ctx_, frame.get(), 0), "[filter]");\r
 161                 }\r
 162                 catch(ffmpeg_error&)\r
 163                 {\r
 164                         throw;\r
 165                 }\r
 166                 catch(...)\r
 167                 {\r
 168                         BOOST_THROW_EXCEPTION(ffmpeg_error() << boost::errinfo_nested_exception(boost::current_exception()));\r
 169                 }\r
 170         }\r
 171 \r
 172         std::shared_ptr<AVFrame> poll()\r
 173         {\r
 174                 if(filters_.empty())\r
 175                 {\r
 176                         if(bypass_.empty())\r
 177                                 return nullptr;\r
 178                         auto frame = bypass_.front();\r
 179                         bypass_.pop();\r
 180                         return frame;\r
 181                 }\r
 182 \r
 183                 if(!graph_)\r
 184                         return nullptr;\r
 185                 \r
 186                 try\r
 187                 {\r
 188                         if(avfilter_poll_frame(buffersink_ctx_->inputs[0])) \r
 189                         {\r
 190                                 AVFilterBufferRef *picref;\r
 191                                 THROW_ON_ERROR2(av_buffersink_get_buffer_ref(buffersink_ctx_, &picref, 0), "[filter]");\r
 192 \r
 193                                 if (picref) \r
 194                                 {               \r
 195                                         safe_ptr<AVFrame> frame(avcodec_alloc_frame(), [=](AVFrame* p)\r
 196                                         {\r
 197                                                 av_free(p);\r
 198                                                 avfilter_unref_buffer(picref);\r
 199                                         });\r
 200 \r
 201                                         avcodec_get_frame_defaults(frame.get());        \r
 202 \r
 203                                         memcpy(frame->data,     picref->data,     sizeof(frame->data));\r
 204                                         memcpy(frame->linesize, picref->linesize, sizeof(frame->linesize));\r
 205                                         frame->format                           = picref->format;\r
 206                                         frame->width                            = picref->video->w;\r
 207                                         frame->height                           = picref->video->h;\r
 208                                         frame->pkt_pos                          = picref->pos;\r
 209                                         frame->interlaced_frame         = picref->video->interlaced;\r
 210                                         frame->top_field_first          = picref->video->top_field_first;\r
 211                                         frame->key_frame                        = picref->video->key_frame;\r
 212                                         frame->pict_type                        = picref->video->pict_type;\r
 213                                         frame->sample_aspect_ratio      = picref->video->sample_aspect_ratio;\r
 214                                         \r
 215                                         return frame;\r
 216                                 }\r
 217                         }\r
 218                 }\r
 219                 catch(ffmpeg_error&)\r
 220                 {\r
 221                         throw;\r
 222                 }\r
 223                 catch(...)\r
 224                 {\r
 225                         BOOST_THROW_EXCEPTION(ffmpeg_error() << boost::errinfo_nested_exception(boost::current_exception()));\r
 226                 }\r
 227 \r
 228                 return nullptr;\r
 229         }\r
 230 };\r
 231 \r
 232 filter::filter(const std::wstring& filters, const std::vector<PixelFormat>& pix_fmts) : impl_(new implementation(filters, pix_fmts)){}\r
 233 filter::filter(filter&& other) : impl_(std::move(other.impl_)){}\r
 234 filter& filter::operator=(filter&& other){impl_ = std::move(other.impl_); return *this;}\r
 235 void filter::push(const std::shared_ptr<AVFrame>& frame){impl_->push(frame);}\r
 236 std::shared_ptr<AVFrame> filter::poll(){return impl_->poll();}\r
 237 std::string filter::filter_str() const{return impl_->filters_;}\r
 238 std::vector<safe_ptr<AVFrame>> filter::poll_all()\r
 239 {       \r
 240         std::vector<safe_ptr<AVFrame>> frames;\r
 241         for(auto frame = poll(); frame; frame = poll())\r
 242                 frames.push_back(make_safe_ptr(frame));\r
 243         return frames;\r
 244 }\r
 245 \r
 246 }}