-/*\r
-* copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
-*\r
-* This file is part of CasparCG.\r
-*\r
-* CasparCG is free software: you can redistribute it and/or modify\r
-* it under the terms of the GNU General Public License as published by\r
-* the Free Software Foundation, either version 3 of the License, or\r
-* (at your option) any later version.\r
-*\r
-* CasparCG is distributed in the hope that it will be useful,\r
-* but WITHOUT ANY WARRANTY; without even the implied warranty of\r
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
-* GNU General Public License for more details.\r
-\r
-* You should have received a copy of the GNU General Public License\r
-* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
-*\r
-*/\r
-#include "../../stdafx.h"\r
-\r
-#include "video_decoder.h"\r
-\r
-#include "../util/util.h"\r
-#include "../filter/filter.h"\r
-\r
-#include "../../ffmpeg_error.h"\r
-\r
-#include <core/producer/frame/basic_frame.h>\r
-#include <common/memory/memcpy.h>\r
-#include <common/concurrency/governor.h>\r
-\r
-#if defined(_MSC_VER)\r
-#pragma warning (push)\r
-#pragma warning (disable : 4244)\r
-#endif\r
-extern "C" \r
-{\r
- #include <libavcodec/avcodec.h>\r
- #include <libavformat/avformat.h>\r
-}\r
-#if defined(_MSC_VER)\r
-#pragma warning (pop)\r
-#endif\r
-\r
-#include <tbb/scalable_allocator.h>\r
-\r
-#undef Yield\r
-using namespace Concurrency;\r
-\r
-namespace caspar { namespace ffmpeg {\r
- \r
-struct video_decoder::implementation : public Concurrency::agent, boost::noncopyable\r
-{ \r
- unbounded_buffer<video_decoder::source_element_t> source_;\r
- ITarget<video_decoder::target_element_t>& target_;\r
-\r
- int index_;\r
- const safe_ptr<AVCodecContext> codec_context_;\r
- \r
- const double fps_;\r
- const int64_t nb_frames_;\r
- const size_t width_;\r
- const size_t height_;\r
- bool is_progressive_;\r
- \r
- governor governor_;\r
-\r
- tbb::atomic<bool> is_running_;\r
- \r
-public:\r
- explicit implementation(video_decoder::source_t& source, video_decoder::target_t& target, AVFormatContext& context) \r
- : source_([this](const video_decoder::source_element_t& packet){return packet->stream_index == index_;})\r
- , target_(target)\r
- , codec_context_(open_codec(context, AVMEDIA_TYPE_VIDEO, index_))\r
- , fps_(static_cast<double>(codec_context_->time_base.den) / static_cast<double>(codec_context_->time_base.num))\r
- , nb_frames_(context.streams[index_]->nb_frames)\r
- , width_(codec_context_->width)\r
- , height_(codec_context_->height)\r
- , is_progressive_(true)\r
- , governor_(1) // IMPORTANT: Must be 1 since avcodec_decode_video2 reuses memory.\r
- { \r
- CASPAR_LOG(debug) << "[video_decoder] " << context.streams[index_]->codec->codec->long_name;\r
- \r
- source.link_target(&source_);\r
- \r
- is_running_ = true;\r
- start();\r
- }\r
-\r
- ~implementation()\r
- {\r
- is_running_ = false;\r
- governor_.cancel();\r
- agent::wait(this);\r
- }\r
-\r
- virtual void run()\r
- {\r
- win32_exception::install_handler();\r
-\r
- try\r
- {\r
- while(is_running_)\r
- {\r
- auto ticket = governor_.acquire();\r
- auto packet = receive(source_);\r
- \r
- if(packet == flush_packet(index_))\r
- { \r
- if(codec_context_->codec->capabilities & CODEC_CAP_DELAY)\r
- {\r
- AVPacket pkt;\r
- av_init_packet(&pkt);\r
- pkt.data = nullptr;\r
- pkt.size = 0;\r
-\r
- for(auto decoded_frame = decode(pkt); decoded_frame; decoded_frame = decode(pkt))\r
- { \r
- send(target_, safe_ptr<AVFrame>(decoded_frame.get(), [decoded_frame, ticket](AVFrame*){}));\r
- Context::Yield();\r
- }\r
- }\r
-\r
- avcodec_flush_buffers(codec_context_.get());\r
- send(target_, flush_video());\r
- continue;\r
- }\r
-\r
- if(packet == eof_packet(index_))\r
- break;\r
-\r
- auto decoded_frame = decode(*packet);\r
- if(!decoded_frame)\r
- continue;\r
- \r
- is_progressive_ = decoded_frame->interlaced_frame == 0;\r
- \r
- send(target_, safe_ptr<AVFrame>(decoded_frame.get(), [decoded_frame, ticket](AVFrame*){})); \r
- Context::Yield();\r
- }\r
- }\r
- catch(...)\r
- {\r
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- }\r
- \r
- send(target_, eof_video());\r
-\r
- done();\r
- }\r
- \r
- std::shared_ptr<AVFrame> decode(AVPacket& packet)\r
- {\r
- std::shared_ptr<AVFrame> decoded_frame(avcodec_alloc_frame(), av_free);\r
-\r
- int frame_finished = 0;\r
- THROW_ON_ERROR2(avcodec_decode_video2(codec_context_.get(), decoded_frame.get(), &frame_finished, &packet), "[video_decocer]");\r
-\r
- // 1 packet <=> 1 frame.\r
- // If a decoder consumes less then the whole packet then something is wrong\r
- // that might be just harmless padding at the end, or a problem with the\r
- // AVParser or demuxer which puted more then one frame in a AVPacket.\r
-\r
- if(frame_finished == 0) \r
- return nullptr;\r
- \r
- if(decoded_frame->repeat_pict > 0)\r
- CASPAR_LOG(warning) << "[video_decoder]: Field repeat_pict not implemented.";\r
-\r
- return decoded_frame;\r
- }\r
-\r
- \r
- double fps() const\r
- {\r
- return fps_;\r
- }\r
-};\r
-\r
-video_decoder::video_decoder(video_decoder::source_t& source, video_decoder::target_t& target, AVFormatContext& context) \r
- : impl_(new implementation(source, target, context))\r
-{\r
-}\r
-\r
-double video_decoder::fps() const{return impl_->fps();}\r
-int64_t video_decoder::nb_frames() const{return impl_->nb_frames_;}\r
-size_t video_decoder::width() const{return impl_->width_;}\r
-size_t video_decoder::height() const{return impl_->height_;}\r
-bool video_decoder::is_progressive() const{return impl_->is_progressive_;}\r
-\r
-}}
\ No newline at end of file
+/*
+* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
+*
+* This file is part of CasparCG (www.casparcg.com).
+*
+* CasparCG is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* CasparCG is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
+*
+* Author: Robert Nagy, ronag89@gmail.com
+*/
+
+#include "../../StdAfx.h"
+
+#include "video_decoder.h"
+
+#include "../util/util.h"
+#include "../input/input.h"
+
+#include "../../ffmpeg_error.h"
+
+#include <common/log.h>
+#include <core/frame/frame_transform.h>
+#include <core/frame/frame_factory.h>
+
+#include <boost/filesystem.hpp>
+
+#include <tbb/atomic.h>
+
+#include <queue>
+
+#if defined(_MSC_VER)
+#pragma warning (push)
+#pragma warning (disable : 4244)
+#endif
+extern "C"
+{
+ #include <libavcodec/avcodec.h>
+ #include <libavformat/avformat.h>
+}
+#if defined(_MSC_VER)
+#pragma warning (pop)
+#endif
+
+namespace caspar { namespace ffmpeg {
+
+struct video_decoder::impl : boost::noncopyable
+{
+ core::monitor::subject monitor_subject_;
+ input* input_;
+ int index_ = -1;
+ const spl::shared_ptr<AVCodecContext> codec_context_;
+
+ std::queue<spl::shared_ptr<AVPacket>> packets_;
+
+ const AVStream* stream_;
+ const uint32_t nb_frames_;
+ const int width_;
+ const int height_;
+
+ tbb::atomic<bool> is_progressive_;
+ tbb::atomic<uint32_t> file_frame_number_;
+ boost::rational<int> framerate_;
+
+ std::shared_ptr<AVPacket> current_packet_;
+
+public:
+ explicit impl(input& in, bool single_threaded)
+ : input_(&in)
+ , codec_context_(open_codec(input_->context(), AVMEDIA_TYPE_VIDEO, index_, single_threaded))
+ , stream_(input_->context().streams[index_])
+ , nb_frames_(static_cast<uint32_t>(stream_->nb_frames))
+ , width_(codec_context_->width)
+ , height_(codec_context_->height)
+ , framerate_(read_framerate(input_->context(), 0))
+ {
+ is_progressive_ = false;
+ file_frame_number_ = 0;
+ }
+
+ std::shared_ptr<AVFrame> poll()
+ {
+ if(!current_packet_ && !input_->try_pop_video(current_packet_))
+ return nullptr;
+
+ std::shared_ptr<AVFrame> frame;
+
+ if (!current_packet_->data)
+ {
+ if(codec_context_->codec->capabilities & CODEC_CAP_DELAY)
+ frame = decode(*current_packet_);
+
+ if (!frame)
+ {
+ file_frame_number_ = static_cast<uint32_t>(current_packet_->pos);
+ avcodec_flush_buffers(codec_context_.get());
+ current_packet_.reset();
+ frame = flush();
+ }
+ }
+ else
+ {
+ frame = decode(*current_packet_);
+
+ if(current_packet_->size == 0)
+ current_packet_.reset();
+ }
+
+ return frame;
+ }
+
+ std::shared_ptr<AVFrame> decode(AVPacket& pkt)
+ {
+ auto frame = create_frame();
+
+ int got_frame = 0;
+ auto len = THROW_ON_ERROR2(avcodec_decode_video2(codec_context_.get(), frame.get(), &got_frame, &pkt), "[video_decocer]");
+
+ if(len == 0)
+ {
+ pkt.size = 0;
+ return nullptr;
+ }
+
+ pkt.data += len;
+ pkt.size -= len;
+
+ if(got_frame == 0)
+ return nullptr;
+
+ ++file_frame_number_;
+
+ is_progressive_ = !frame->interlaced_frame;
+
+ if(frame->repeat_pict > 0)
+ CASPAR_LOG(warning) << "[video_decoder] repeat_pict not implemented.";
+
+ monitor_subject_ << core::monitor::message("/file/video/width") % width_
+ << core::monitor::message("/file/video/height") % height_
+ << core::monitor::message("/file/video/field") % u8(!frame->interlaced_frame ? "progressive" : (frame->top_field_first ? "upper" : "lower"))
+ << core::monitor::message("/file/video/codec") % u8(codec_context_->codec->long_name);
+
+ return frame;
+ }
+
+ uint32_t nb_frames() const
+ {
+ return std::max(nb_frames_, static_cast<uint32_t>(file_frame_number_));
+ }
+
+ std::wstring print() const
+ {
+ return L"[video-decoder] " + u16(codec_context_->codec->long_name);
+ }
+};
+
+video_decoder::video_decoder(input& in, bool single_threaded) : impl_(new impl(in, single_threaded)){}
+video_decoder::video_decoder(video_decoder&& other) : impl_(std::move(other.impl_)){}
+video_decoder& video_decoder::operator=(video_decoder&& other){impl_ = std::move(other.impl_); return *this;}
+std::shared_ptr<AVFrame> video_decoder::operator()(){return impl_->poll();}
+int video_decoder::width() const{return impl_->width_;}
+int video_decoder::height() const{return impl_->height_;}
+uint32_t video_decoder::nb_frames() const{return impl_->nb_frames();}
+uint32_t video_decoder::file_frame_number() const{return impl_->file_frame_number_;}
+boost::rational<int> video_decoder::framerate() const { return impl_->framerate_; }
+bool video_decoder::is_progressive() const{return impl_->is_progressive_;}
+std::wstring video_decoder::print() const{return impl_->print();}
+core::monitor::subject& video_decoder::monitor_output() { return impl_->monitor_subject_; }
+}}
projects / casparcg / blobdiff