git.sesse.net Git - casparcg/blob - accelerator/cpu/image/image_mixer.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 "image_mixer.h"\r
  25 \r
  26 #include "../util/data_frame.h"\r
  27 #include "../util/xmm.h"\r
  28 \r
  29 #include <common/assert.h>\r
  30 #include <common/gl/gl_check.h>\r
  31 #include <common/concurrency/async.h>\r
  32 #include <common/memory/memcpy.h>\r
  33 \r
  34 #include <core/frame/data_frame.h>\r
  35 #include <core/frame/frame_transform.h>\r
  36 #include <core/frame/pixel_format.h>\r
  37 #include <core/video_format.h>\r
  38 \r
  39 #include <modules/ffmpeg/producer/util/util.h>\r
  40 \r
  41 #include <asmlib.h>\r
  42 \r
  43 #include <gl/glew.h>\r
  44 \r
  45 #include <tbb/cache_aligned_allocator.h>\r
  46 #include <tbb/parallel_for_each.h>\r
  47 \r
  48 #include <boost/assign.hpp>\r
  49 #include <boost/foreach.hpp>\r
  50 #include <boost/range.hpp>\r
  51 #include <boost/range/algorithm_ext/erase.hpp>\r
  52 #include <boost/thread/future.hpp>\r
  53 \r
  54 #include <algorithm>\r
  55 #include <stdint.h>\r
  56 #include <vector>\r
  57 \r
  58 #if defined(_MSC_VER)\r
  59 #pragma warning (push)\r
  60 #pragma warning (disable : 4244)\r
  61 #endif\r
  62 extern "C" \r
  63 {\r
  64         #include <libswscale/swscale.h>\r
  65         #include <libavcodec/avcodec.h>\r
  66         #include <libavformat/avformat.h>\r
  67 }\r
  68 #if defined(_MSC_VER)\r
  69 #pragma warning (pop)\r
  70 #endif\r
  71 \r
  72 namespace caspar { namespace accelerator { namespace cpu {\r
  73                 \r
  74 struct item\r
  75 {\r
  76         core::pixel_format_desc                 pix_desc;\r
  77         std::array<const uint8_t*, 4>   data;\r
  78         core::image_transform                   transform;\r
  79 \r
  80         item()\r
  81                 : pix_desc(core::pixel_format::invalid)\r
  82         {\r
  83                 data.fill(0);\r
  84         }\r
  85 };\r
  86 \r
  87 bool operator==(const item& lhs, const item& rhs)\r
  88 {\r
  89         return lhs.data == rhs.data && lhs.transform == rhs.transform;\r
  90 }\r
  91 \r
  92 bool operator!=(const item& lhs, const item& rhs)\r
  93 {\r
  94         return !(lhs == rhs);\r
  95 }\r
  96         \r
  97 inline xmm::s8_x blend(xmm::s8_x d, xmm::s8_x s)\r
  98 {       \r
  99         using namespace xmm;\r
 100                 \r
 101         // T(S, D) = S * D[A] + 0x80\r
 102         auto aaaa   = s8_x::shuffle(d, s8_x(15, 15, 15, 15, 11, 11, 11, 11, 7, 7, 7, 7, 3, 3, 3, 3));\r
 103         d                       = s8_x(u8_x::min(u8_x(d), u8_x(aaaa))); // overflow guard\r
 104 \r
 105         auto xaxa       = s16_x(aaaa) >> 8;             \r
 106                               \r
 107         auto t1         = s16_x::multiply_low(s16_x(s) & 0x00FF, xaxa) + 0x80;    \r
 108         auto t2         = s16_x::multiply_low(s16_x(s) >> 8    , xaxa) + 0x80;\r
 109                 \r
 110         // C(S, D) = S + D - (((T >> 8) + T) >> 8);\r
 111         auto xyxy       = s8_x(((t1 >> 8) + t1) >> 8);      \r
 112         auto yxyx       = s8_x((t2 >> 8) + t2);    \r
 113         auto argb   = s8_x::blend(xyxy, yxyx, s8_x(-1, 0, -1, 0));\r
 114 \r
 115         return s8_x(s) + (d - argb);\r
 116 }\r
 117         \r
 118 template<typename temporal, typename alignment>\r
 119 static void kernel(uint8_t* dest, const uint8_t* source, size_t count)\r
 120 {                       \r
 121         using namespace xmm;\r
 122 \r
 123         for(auto n = 0; n < count; n += 32)    \r
 124         {\r
 125                 auto s0 = s8_x::load<temporal_tag, alignment>(dest+n+0);\r
 126                 auto s1 = s8_x::load<temporal_tag, alignment>(dest+n+16);\r
 127 \r
 128                 auto d0 = s8_x::load<temporal_tag, alignment>(source+n+0);\r
 129                 auto d1 = s8_x::load<temporal_tag, alignment>(source+n+16);\r
 130                 \r
 131                 auto argb0 = blend(d0, s0);\r
 132                 auto argb1 = blend(d1, s1);\r
 133 \r
 134                 s8_x::store<temporal, alignment>(argb0, dest+n+0 );\r
 135                 s8_x::store<temporal, alignment>(argb1, dest+n+16);\r
 136         } \r
 137 }\r
 138 \r
 139 template<typename temporal>\r
 140 static void kernel(uint8_t* dest, const uint8_t* source, size_t count)\r
 141 {                       \r
 142         using namespace xmm;\r
 143 \r
 144         if(reinterpret_cast<int>(dest) % 16 != 0 || reinterpret_cast<int>(source) % 16 != 0)\r
 145                 kernel<temporal_tag, unaligned_tag>(dest, source, count);\r
 146         else\r
 147                 kernel<temporal_tag, aligned_tag>(dest, source, count);\r
 148 }\r
 149 \r
 150 class image_renderer\r
 151 {\r
 152         std::pair<std::vector<item>, boost::shared_future<boost::iterator_range<const uint8_t*>>>               last_image_;\r
 153         tbb::concurrent_unordered_map<int, tbb::concurrent_bounded_queue<std::shared_ptr<SwsContext>>>  sws_contexts_;\r
 154         std::vector<spl::shared_ptr<host_buffer>>                                                                                                               temp_buffers_;\r
 155 public: \r
 156         boost::shared_future<boost::iterator_range<const uint8_t*>> operator()(std::vector<item> items, const core::video_format_desc& format_desc)\r
 157         {       \r
 158                 if(last_image_.first == items && last_image_.second.has_value())\r
 159                         return last_image_.second;\r
 160 \r
 161                 auto image      = render(items, format_desc);\r
 162                 last_image_ = std::make_pair(std::move(items), image);\r
 163                 return image;\r
 164         }\r
 165 \r
 166 private:\r
 167         boost::shared_future<boost::iterator_range<const uint8_t*>> render(std::vector<item> items, const core::video_format_desc& format_desc)\r
 168         {\r
 169                 convert(items, format_desc.width, format_desc.height);          \r
 170                 \r
 171                 auto result = spl::make_shared<host_buffer>(format_desc.size, 0);\r
 172                 if(format_desc.field_mode != core::field_mode::progressive)\r
 173                 {                       \r
 174                         draw(items, result->data(), format_desc.width, format_desc.height, core::field_mode::upper);\r
 175                         draw(items, result->data(), format_desc.width, format_desc.height, core::field_mode::lower);\r
 176                 }\r
 177                 else\r
 178                 {\r
 179                         draw(items, result->data(), format_desc.width, format_desc.height,  core::field_mode::progressive);\r
 180                 }\r
 181                 \r
 182                 return async(launch_policy::deferred, [=]\r
 183                 {\r
 184                         return boost::iterator_range<const uint8_t*>(result->data(), result->data() + format_desc.size);\r
 185                 });             \r
 186         }\r
 187 \r
 188         void draw(std::vector<item> items, uint8_t* dest, int width, int height, core::field_mode field_mode)\r
 189         {               \r
 190                 BOOST_FOREACH(auto& item, items)\r
 191                         item.transform.field_mode &= field_mode;\r
 192                 \r
 193                 // Remove empty items.\r
 194                 boost::range::remove_erase_if(items, [&](const item& item)\r
 195                 {\r
 196                         return item.transform.field_mode == core::field_mode::empty;\r
 197                 });\r
 198                 \r
 199                 // Remove first field stills.\r
 200                 boost::range::remove_erase_if(items, [&](const item& item)\r
 201                 {\r
 202                         return item.transform.is_still && item.transform.field_mode == field_mode; // only us last field for stills.\r
 203                 });\r
 204 \r
 205                 if(items.empty())\r
 206                         return;\r
 207                 \r
 208                 auto start = field_mode == core::field_mode::lower ? 1 : 0;\r
 209                 auto step  = field_mode == core::field_mode::progressive ? 1 : 2;\r
 210                 \r
 211                 // TODO: Add support for fill translations.\r
 212                 // TODO: Add support for mask rect.\r
 213                 // TODO: Add support for opacity.\r
 214                 // TODO: Add support for mix transition.\r
 215                 // TODO: Add support for push transition.\r
 216                 // TODO: Add support for wipe transition.\r
 217                 // TODO: Add support for slide transition.\r
 218                 tbb::parallel_for(tbb::blocked_range<int>(0, height/step), [&](const tbb::blocked_range<int>& r)\r
 219                 {\r
 220                         for(auto i = r.begin(); i != r.end(); ++i)\r
 221                         {\r
 222                                 auto y = i*step+start;\r
 223 \r
 224                                 for(std::size_t n = 0; n < items.size()-1; ++n)\r
 225                                         kernel<xmm::temporal_tag>(dest + y*width*4, items[n].data.at(0) + y*width*4, width*4);\r
 226                                 \r
 227                                 std::size_t n = items.size()-1;                         \r
 228                                 kernel<xmm::nontemporal_tag>(dest + y*width*4, items[n].data.at(0) + y*width*4, width*4);\r
 229                         }\r
 230 \r
 231                         _mm_mfence();\r
 232                 });\r
 233 \r
 234                 temp_buffers_.clear();\r
 235         }\r
 236                 \r
 237         void convert(std::vector<item>& source_items, int width, int height)\r
 238         {\r
 239                 std::set<std::array<const uint8_t*, 4>> buffers;\r
 240 \r
 241                 BOOST_FOREACH(auto& item, source_items)\r
 242                         buffers.insert(item.data);\r
 243                 \r
 244                 auto dest_items = source_items;\r
 245 \r
 246                 tbb::parallel_for_each(buffers.begin(), buffers.end(), [&](const std::array<const uint8_t*, 4>& data)\r
 247                 {                       \r
 248                         auto pix_desc = std::find_if(source_items.begin(), source_items.end(), [&](const item& item){return item.data == data;})->pix_desc;\r
 249 \r
 250                         if(pix_desc.format == core::pixel_format::bgra && \r
 251                                 pix_desc.planes.at(0).width == width &&\r
 252                                 pix_desc.planes.at(0).height == height)\r
 253                                 return;\r
 254 \r
 255                         std::array<uint8_t*, 4> data2 = {};\r
 256                         for(std::size_t n = 0; n < data.size(); ++n)\r
 257                                 data2.at(n) = const_cast<uint8_t*>(data[n]);\r
 258 \r
 259                         auto input_av_frame = ffmpeg::make_av_frame(data2, pix_desc);\r
 260                                                                 \r
 261                         int key = ((input_av_frame->width << 22) & 0xFFC00000) | ((input_av_frame->height << 6) & 0x003FC000) | ((input_av_frame->format << 7) & 0x00007F00);\r
 262                                                 \r
 263                         auto& pool = sws_contexts_[key];\r
 264 \r
 265                         std::shared_ptr<SwsContext> sws_context;\r
 266                         if(!pool.try_pop(sws_context))\r
 267                         {\r
 268                                 double param;\r
 269                                 sws_context.reset(sws_getContext(input_av_frame->width, input_av_frame->height, static_cast<PixelFormat>(input_av_frame->format), width, height, PIX_FMT_BGRA, SWS_BILINEAR, nullptr, nullptr, &param), sws_freeContext);\r
 270                         }\r
 271                         \r
 272                         if(!sws_context)                                \r
 273                                 BOOST_THROW_EXCEPTION(operation_failed() << msg_info("Could not create software scaling context.") << boost::errinfo_api_function("sws_getContext"));                           \r
 274                 \r
 275                         auto dest_frame = spl::make_shared<host_buffer>(width*height*4);\r
 276 \r
 277                         {\r
 278                                 spl::shared_ptr<AVFrame> dest_av_frame(avcodec_alloc_frame(), av_free); \r
 279                                 avcodec_get_frame_defaults(dest_av_frame.get());                        \r
 280                                 avpicture_fill(reinterpret_cast<AVPicture*>(dest_av_frame.get()), dest_frame->data(), PIX_FMT_BGRA, width, height);\r
 281                                 \r
 282                                 sws_scale(sws_context.get(), input_av_frame->data, input_av_frame->linesize, 0, input_av_frame->height, dest_av_frame->data, dest_av_frame->linesize);                          \r
 283                                 pool.push(sws_context);\r
 284                         }\r
 285 \r
 286                         temp_buffers_.push_back(dest_frame);\r
 287                 \r
 288                         for(std::size_t n = 0; n < source_items.size(); ++n)\r
 289                         {\r
 290                                 if(source_items[n].data == data)\r
 291                                 {\r
 292                                         dest_items[n].data.assign(0);\r
 293                                         dest_items[n].data[0]                   = dest_frame->data();\r
 294                                         dest_items[n].pix_desc                  = core::pixel_format_desc(core::pixel_format::bgra);\r
 295                                         dest_items[n].pix_desc.planes   = boost::assign::list_of(core::pixel_format_desc::plane(width, height, 4));\r
 296                                         dest_items[n].transform                 = source_items[n].transform;\r
 297                                 }\r
 298                         }\r
 299                 });     \r
 300 \r
 301                 source_items = std::move(dest_items);\r
 302         }\r
 303 };\r
 304                 \r
 305 struct image_mixer::impl : boost::noncopyable\r
 306 {       \r
 307         image_renderer                                          renderer_;\r
 308         std::vector<core::image_transform>      transform_stack_;\r
 309         std::vector<item>                                       items_; // layer/stream/items\r
 310 public:\r
 311         impl() \r
 312                 : transform_stack_(1)   \r
 313         {\r
 314                 CASPAR_LOG(info) << L"Initialized Streaming SIMD Extensions Accelerated CPU Image Mixer";\r
 315         }\r
 316 \r
 317         void begin_layer(core::blend_mode blend_mode)\r
 318         {\r
 319         }\r
 320                 \r
 321         void push(const core::frame_transform& transform)\r
 322         {\r
 323                 transform_stack_.push_back(transform_stack_.back()*transform.image_transform);\r
 324         }\r
 325                 \r
 326         void visit(const core::data_frame& frame)\r
 327         {                       \r
 328                 if(frame.pixel_format_desc().format == core::pixel_format::invalid)\r
 329                         return;\r
 330 \r
 331                 if(frame.pixel_format_desc().planes.empty())\r
 332                         return;\r
 333 \r
 334                 if(transform_stack_.back().field_mode == core::field_mode::empty)\r
 335                         return;\r
 336 \r
 337                 item item;\r
 338                 item.pix_desc   = frame.pixel_format_desc();\r
 339                 item.transform  = transform_stack_.back();\r
 340                 for(int n = 0; n < item.pix_desc.planes.size(); ++n)\r
 341                         item.data.at(n) = frame.image_data(n).begin();          \r
 342 \r
 343                 items_.push_back(item);\r
 344         }\r
 345 \r
 346         void pop()\r
 347         {\r
 348                 transform_stack_.pop_back();\r
 349         }\r
 350 \r
 351         void end_layer()\r
 352         {               \r
 353         }\r
 354         \r
 355         boost::shared_future<boost::iterator_range<const uint8_t*>> render(const core::video_format_desc& format_desc)\r
 356         {\r
 357                 return renderer_(std::move(items_), format_desc);\r
 358         }\r
 359         \r
 360         virtual spl::unique_ptr<core::data_frame> create_frame(const void* tag, const core::pixel_format_desc& desc, double frame_rate, core::field_mode field_mode)\r
 361         {\r
 362                 return spl::make_unique<cpu::data_frame>(tag, desc, frame_rate, field_mode);\r
 363         }\r
 364 };\r
 365 \r
 366 image_mixer::image_mixer() : impl_(new impl()){}\r
 367 void image_mixer::push(const core::frame_transform& transform){impl_->push(transform);}\r
 368 void image_mixer::visit(const core::data_frame& frame){impl_->visit(frame);}\r
 369 void image_mixer::pop(){impl_->pop();}\r
 370 boost::shared_future<boost::iterator_range<const uint8_t*>> image_mixer::operator()(const core::video_format_desc& format_desc){return impl_->render(format_desc);}\r
 371 void image_mixer::begin_layer(core::blend_mode blend_mode){impl_->begin_layer(blend_mode);}\r
 372 void image_mixer::end_layer(){impl_->end_layer();}\r
 373 spl::unique_ptr<core::data_frame> image_mixer::create_frame(const void* tag, const core::pixel_format_desc& desc, double frame_rate, core::field_mode field_mode) {return impl_->create_frame(tag, desc, frame_rate, field_mode);}\r
 374 \r
 375 }}}