-/*\r
-* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
-*\r
-* This file is part of CasparCG (www.casparcg.com).\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
-* Author: Robert Nagy, ronag89@gmail.com\r
-*/\r
-\r
-#include "../../stdafx.h"\r
-\r
-#include "input.h"\r
-\r
-#include "../util/util.h"\r
-#include "../../ffmpeg_error.h"\r
-\r
-#include <common/diagnostics/graph.h>\r
-#include <common/executor.h>\r
-#include <common/except.h>\r
-#include <common/log.h>\r
-\r
-#include <core/video_format.h>\r
-\r
-#include <tbb/concurrent_queue.h>\r
-#include <tbb/atomic.h>\r
-#include <tbb/recursive_mutex.h>\r
-\r
-#include <boost/range/algorithm.hpp>\r
-#include <boost/thread/condition_variable.hpp>\r
-#include <boost/thread/mutex.hpp>\r
-#include <boost/thread/thread.hpp>\r
-\r
-#if defined(_MSC_VER)\r
-#pragma warning (push)\r
-#pragma warning (disable : 4244)\r
-#endif\r
-extern "C" \r
-{\r
- #define __STDC_CONSTANT_MACROS\r
- #define __STDC_LIMIT_MACROS\r
- #include <libavformat/avformat.h>\r
-}\r
-#if defined(_MSC_VER)\r
-#pragma warning (pop)\r
-#endif\r
-\r
-static const size_t MAX_BUFFER_COUNT = 100;\r
-static const size_t MIN_BUFFER_COUNT = 32;\r
-static const size_t MAX_BUFFER_SIZE = 32 * 1000000;\r
-\r
-namespace caspar { namespace ffmpeg {\r
- \r
-struct input::impl : boost::noncopyable\r
-{ \r
- const spl::shared_ptr<diagnostics::graph> graph_;\r
-\r
- const spl::shared_ptr<AVFormatContext> format_context_; // Destroy this last\r
- const int default_stream_index_;\r
- \r
- const std::wstring filename_;\r
- tbb::atomic<uint32_t> start_; \r
- tbb::atomic<uint32_t> length_;\r
- tbb::atomic<bool> loop_;\r
- tbb::atomic<bool> eof_;\r
- uint32_t frame_number_;\r
- \r
- tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>> buffer_;\r
- tbb::atomic<size_t> buffer_size_;\r
- \r
- executor executor_;\r
- \r
- impl(const spl::shared_ptr<diagnostics::graph> graph, const std::wstring& filename, const bool loop, const uint32_t start, const uint32_t length) \r
- : graph_(graph)\r
- , format_context_(open_input(filename)) \r
- , default_stream_index_(av_find_default_stream_index(format_context_.get()))\r
- , filename_(filename)\r
- , frame_number_(0)\r
- , executor_(print())\r
- { \r
- start_ = start;\r
- length_ = length;\r
- loop_ = loop;\r
- eof_ = false;\r
- buffer_size_ = 0;\r
-\r
- if(start_ > 0) \r
- seek(start_, false);\r
- \r
- graph_->set_color("seek", diagnostics::color(1.0f, 0.5f, 0.0f)); \r
- graph_->set_color("buffer-count", diagnostics::color(0.7f, 0.4f, 0.4f));\r
- graph_->set_color("buffer-size", diagnostics::color(1.0f, 1.0f, 0.0f)); \r
-\r
- tick();\r
- }\r
- \r
- bool try_pop(std::shared_ptr<AVPacket>& packet)\r
- {\r
- auto result = buffer_.try_pop(packet);\r
- \r
- if(result)\r
- {\r
- if(packet)\r
- buffer_size_ -= packet->size;\r
- tick();\r
- }\r
-\r
- graph_->set_value("buffer-size", (static_cast<double>(buffer_size_)+0.001)/MAX_BUFFER_SIZE);\r
- graph_->set_value("buffer-count", (static_cast<double>(buffer_.size()+0.001)/MAX_BUFFER_COUNT));\r
- \r
- return result;\r
- }\r
-\r
- void seek(uint32_t target, bool clear)\r
- {\r
- executor_.invoke([=]\r
- {\r
- if(clear)\r
- {\r
- std::shared_ptr<AVPacket> packet;\r
- while(buffer_.try_pop(packet) && packet)\r
- buffer_size_ -= packet->size;\r
- }\r
- \r
- CASPAR_LOG(debug) << print() << " Seeking: " << target;\r
-\r
- int flags = AVSEEK_FLAG_FRAME;\r
- if(target == 0)\r
- {\r
- // Fix VP6 seeking\r
- int vid_stream_index = av_find_best_stream(format_context_.get(), AVMEDIA_TYPE_VIDEO, -1, -1, 0, 0);\r
- if(vid_stream_index >= 0)\r
- {\r
- auto codec_id = format_context_->streams[vid_stream_index]->codec->codec_id;\r
- if(codec_id == CODEC_ID_VP6A || codec_id == CODEC_ID_VP6F || codec_id == CODEC_ID_VP6)\r
- flags = AVSEEK_FLAG_BYTE;\r
- }\r
- }\r
- \r
- auto stream = format_context_->streams[default_stream_index_];\r
- auto codec = stream->codec;\r
- auto fixed_target = (target*stream->time_base.den*codec->time_base.num)/(stream->time_base.num*codec->time_base.den)*codec->ticks_per_frame;\r
- \r
- THROW_ON_ERROR2(avformat_seek_file(format_context_.get(), default_stream_index_, std::numeric_limits<int64_t>::min(), fixed_target, std::numeric_limits<int64_t>::max(), 0), print()); \r
- \r
- auto flush_packet = create_packet();\r
- flush_packet->data = nullptr;\r
- flush_packet->size = 0;\r
- flush_packet->pos = target;\r
-\r
- buffer_.push(flush_packet);\r
- \r
- tick();\r
- }, task_priority::high_priority);\r
- }\r
- \r
- std::wstring print() const\r
- {\r
- return L"ffmpeg_input[" + filename_ + L")]";\r
- }\r
- \r
- bool full() const\r
- {\r
- return (buffer_size_ > MAX_BUFFER_SIZE || buffer_.size() > MAX_BUFFER_COUNT) && buffer_.size() > MIN_BUFFER_COUNT;\r
- }\r
-\r
- void tick()\r
- { \r
- if(!executor_.is_running())\r
- return;\r
- \r
- executor_.begin_invoke([this]\r
- { \r
- if(full())\r
- return;\r
-\r
- try\r
- {\r
- auto packet = create_packet();\r
- \r
- auto ret = av_read_frame(format_context_.get(), packet.get()); // packet is only valid until next call of av_read_frame. Use av_dup_packet to extend its life. \r
- \r
- if(is_eof(ret)) \r
- {\r
- frame_number_ = 0;\r
-\r
- if(loop_)\r
- {\r
- seek(start_, false);\r
- graph_->set_tag("seek"); \r
- CASPAR_LOG(trace) << print() << " Looping."; \r
- }\r
- else\r
- eof_ = true;\r
- }\r
- else\r
- { \r
- eof_ = false;\r
-\r
- THROW_ON_ERROR(ret, "av_read_frame", print());\r
-\r
- if(packet->stream_index == default_stream_index_)\r
- ++frame_number_;\r
-\r
- THROW_ON_ERROR2(av_dup_packet(packet.get()), print());\r
- \r
- // Make sure that the packet is correctly deallocated even if size and data is modified during decoding.\r
- auto size = packet->size;\r
- auto data = packet->data;\r
- \r
- packet = spl::shared_ptr<AVPacket>(packet.get(), [packet, size, data](AVPacket*)\r
- {\r
- packet->size = size;\r
- packet->data = data; \r
- });\r
-\r
- buffer_.try_push(packet);\r
- buffer_size_ += packet->size;\r
- \r
- graph_->set_value("buffer-size", (static_cast<double>(buffer_size_)+0.001)/MAX_BUFFER_SIZE);\r
- graph_->set_value("buffer-count", (static_cast<double>(buffer_.size()+0.001)/MAX_BUFFER_COUNT)); \r
- } \r
-\r
- if(!eof_)\r
- tick(); \r
- }\r
- catch(...)\r
- {\r
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- executor_.stop();\r
- }\r
- });\r
- } \r
- \r
- bool is_eof(int ret)\r
- {\r
- #pragma warning (disable : 4146)\r
-\r
- //if(ret == AVERROR(EIO))\r
- // CASPAR_LOG(trace) << print() << " Received EIO, assuming EOF. ";\r
- //if(ret == AVERROR_EOF)\r
- // CASPAR_LOG(trace) << print() << " Received EOF. ";\r
-\r
- return ret == AVERROR_EOF || ret == AVERROR(EIO) || frame_number_ >= length_; // av_read_frame doesn't always correctly return AVERROR_EOF;\r
- }\r
-};\r
-\r
-input::input(const spl::shared_ptr<diagnostics::graph>& graph, const std::wstring& filename, bool loop, uint32_t start, uint32_t length) \r
- : impl_(new impl(graph, filename, loop, start, length)){}\r
-bool input::eof() const {return impl_->eof_;}\r
-bool input::try_pop(std::shared_ptr<AVPacket>& packet){return impl_->try_pop(packet);}\r
-spl::shared_ptr<AVFormatContext> input::context(){return impl_->format_context_;}\r
-void input::loop(bool value){impl_->loop_ = value;}\r
-bool input::loop() const{return impl_->loop_;}\r
-void input::seek(uint32_t target){impl_->seek(target, true);}\r
-void input::start(uint32_t value){impl_->start_ = value;}\r
-uint32_t input::start() const{return impl_->start_;}\r
-void input::length(uint32_t value){impl_->length_ = value;}\r
-uint32_t input::length() const{return impl_->length_;}\r
-}}\r
+/*
+* Copyright 2013 Sveriges Television AB http://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 "input.h"
+
+#include "../util/util.h"
+#include "../util/flv.h"
+#include "../../ffmpeg_error.h"
+#include "../../ffmpeg.h"
+
+#include <core/video_format.h>
+
+#include <common/diagnostics/graph.h>
+#include <common/executor.h>
+#include <common/except.h>
+#include <common/os/general_protection_fault.h>
+#include <common/param.h>
+#include <common/scope_exit.h>
+
+#include <tbb/concurrent_queue.h>
+#include <tbb/atomic.h>
+#include <tbb/recursive_mutex.h>
+
+#include <boost/range/algorithm.hpp>
+#include <boost/thread/condition_variable.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/thread.hpp>
+
+#if defined(_MSC_VER)
+#pragma warning (push)
+#pragma warning (disable : 4244)
+#endif
+extern "C"
+{
+ #define __STDC_CONSTANT_MACROS
+ #define __STDC_LIMIT_MACROS
+ #include <libavformat/avformat.h>
+}
+#if defined(_MSC_VER)
+#pragma warning (pop)
+#endif
+
+static const size_t MAX_BUFFER_COUNT = 100;
+static const size_t MAX_BUFFER_COUNT_RT = 3;
+static const size_t MIN_BUFFER_COUNT = 50;
+static const size_t MAX_BUFFER_SIZE = 64 * 1000000;
+
+namespace caspar { namespace ffmpeg {
+struct input::implementation : boost::noncopyable
+{
+ const spl::shared_ptr<diagnostics::graph> graph_;
+
+ const spl::shared_ptr<AVFormatContext> format_context_; // Destroy this last
+ const int default_stream_index_ = av_find_default_stream_index(format_context_.get());
+
+ const std::wstring filename_;
+ tbb::atomic<uint32_t> start_;
+ tbb::atomic<uint32_t> length_;
+ const bool thumbnail_mode_;
+ tbb::atomic<bool> loop_;
+ uint32_t frame_number_ = 0;
+
+ tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>> buffer_;
+ tbb::atomic<size_t> buffer_size_;
+
+ executor executor_;
+
+ explicit implementation(const spl::shared_ptr<diagnostics::graph> graph, const std::wstring& url_or_file, bool loop, uint32_t start, uint32_t length, bool thumbnail_mode, const ffmpeg_options& vid_params)
+ : graph_(graph)
+ , format_context_(open_input(url_or_file, vid_params))
+ , filename_(url_or_file)
+ , thumbnail_mode_(thumbnail_mode)
+ , executor_(print())
+ {
+ if (thumbnail_mode_)
+ executor_.invoke([]
+ {
+ enable_quiet_logging_for_thread();
+ });
+
+ start_ = start;
+ length_ = length;
+ loop_ = loop;
+ buffer_size_ = 0;
+
+ if(start_ > 0)
+ queued_seek(start_);
+
+ graph_->set_color("seek", diagnostics::color(1.0f, 0.5f, 0.0f));
+ graph_->set_color("buffer-count", diagnostics::color(0.7f, 0.4f, 0.4f));
+ graph_->set_color("buffer-size", diagnostics::color(1.0f, 1.0f, 0.0f));
+
+ tick();
+ }
+
+ bool try_pop(std::shared_ptr<AVPacket>& packet)
+ {
+ auto result = buffer_.try_pop(packet);
+
+ if(result)
+ {
+ if(packet)
+ buffer_size_ -= packet->size;
+ tick();
+ }
+
+ graph_->set_value("buffer-size", (static_cast<double>(buffer_size_)+0.001)/MAX_BUFFER_SIZE);
+ graph_->set_value("buffer-count", (static_cast<double>(buffer_.size()+0.001)/MAX_BUFFER_COUNT));
+
+ return result;
+ }
+
+ std::ptrdiff_t get_max_buffer_count() const
+ {
+ return thumbnail_mode_ ? 1 : MAX_BUFFER_COUNT;
+ }
+
+ std::ptrdiff_t get_min_buffer_count() const
+ {
+ return thumbnail_mode_ ? 0 : MIN_BUFFER_COUNT;
+ }
+
+ std::future<bool> seek(uint32_t target)
+ {
+ if (!executor_.is_running())
+ return make_ready_future(false);
+
+ return executor_.begin_invoke([=]() -> bool
+ {
+ std::shared_ptr<AVPacket> packet;
+ while(buffer_.try_pop(packet) && packet)
+ buffer_size_ -= packet->size;
+
+ queued_seek(target);
+
+ tick();
+
+ return true;
+ }, task_priority::high_priority);
+ }
+
+ std::wstring print() const
+ {
+ return L"ffmpeg_input[" + filename_ + L")]";
+ }
+
+ bool full() const
+ {
+ return (buffer_size_ > MAX_BUFFER_SIZE || buffer_.size() > get_max_buffer_count()) && buffer_.size() > get_min_buffer_count();
+ }
+
+ void tick()
+ {
+ if(!executor_.is_running())
+ return;
+
+ executor_.begin_invoke([this]
+ {
+ if(full())
+ return;
+
+ try
+ {
+ auto packet = create_packet();
+
+ auto ret = av_read_frame(format_context_.get(), packet.get()); // packet is only valid until next call of av_read_frame. Use av_dup_packet to extend its life.
+
+ if(is_eof(ret))
+ {
+ frame_number_ = 0;
+
+ if(loop_)
+ {
+ queued_seek(start_);
+ graph_->set_tag(diagnostics::tag_severity::INFO, "seek");
+ CASPAR_LOG(trace) << print() << " Looping.";
+ }
+ else
+ executor_.stop();
+ }
+ else
+ {
+ THROW_ON_ERROR(ret, "av_read_frame", print());
+
+ if(packet->stream_index == default_stream_index_)
+ ++frame_number_;
+
+ THROW_ON_ERROR2(av_dup_packet(packet.get()), print());
+
+ // Make sure that the packet is correctly deallocated even if size and data is modified during decoding.
+ auto size = packet->size;
+ auto data = packet->data;
+
+ packet = spl::shared_ptr<AVPacket>(packet.get(), [packet, size, data](AVPacket*)
+ {
+ packet->size = size;
+ packet->data = data;
+ });
+
+ buffer_.try_push(packet);
+ buffer_size_ += packet->size;
+
+ graph_->set_value("buffer-size", (static_cast<double>(buffer_size_)+0.001)/MAX_BUFFER_SIZE);
+ graph_->set_value("buffer-count", (static_cast<double>(buffer_.size()+0.001)/MAX_BUFFER_COUNT));
+ }
+
+ tick();
+ }
+ catch(...)
+ {
+ if (!thumbnail_mode_)
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ executor_.stop();
+ }
+ });
+ }
+
+ spl::shared_ptr<AVFormatContext> open_input(const std::wstring& url_or_file, const ffmpeg_options& vid_params)
+ {
+ AVDictionary* format_options = nullptr;
+
+ CASPAR_SCOPE_EXIT
+ {
+ if (format_options)
+ av_dict_free(&format_options);
+ };
+
+ for (auto& option : vid_params)
+ av_dict_set(&format_options, option.first.c_str(), option.second.c_str(), 0);
+
+ auto resource_name = std::wstring();
+ auto parts = caspar::protocol_split(url_or_file);
+ auto protocol = parts.at(0);
+ auto path = parts.at(1);
+ AVInputFormat* input_format = nullptr;
+
+ static const std::set<std::wstring> PROTOCOLS_TREATED_AS_FORMATS = { L"dshow", L"v4l2" };
+
+ if (protocol.empty())
+ resource_name = path;
+ else if (PROTOCOLS_TREATED_AS_FORMATS.find(protocol) != PROTOCOLS_TREATED_AS_FORMATS.end())
+ {
+ input_format = av_find_input_format(u8(protocol).c_str());
+ resource_name = path;
+ }
+ else
+ resource_name = protocol + L"://" + path;
+
+ AVFormatContext* weak_context = nullptr;
+ THROW_ON_ERROR2(avformat_open_input(&weak_context, u8(resource_name).c_str(), input_format, &format_options), resource_name);
+
+ spl::shared_ptr<AVFormatContext> context(weak_context, [](AVFormatContext* ptr)
+ {
+ avformat_close_input(&ptr);
+ });
+
+ if (format_options)
+ {
+ std::string unsupported_tokens = "";
+ AVDictionaryEntry *t = NULL;
+ while ((t = av_dict_get(format_options, "", t, AV_DICT_IGNORE_SUFFIX)) != nullptr)
+ {
+ if (!unsupported_tokens.empty())
+ unsupported_tokens += ", ";
+ unsupported_tokens += t->key;
+ }
+ CASPAR_THROW_EXCEPTION(user_error() << msg_info(unsupported_tokens));
+ }
+
+ THROW_ON_ERROR2(avformat_find_stream_info(context.get(), nullptr), resource_name);
+ fix_meta_data(*context);
+ return context;
+ }
+
+ void fix_meta_data(AVFormatContext& context)
+ {
+ auto video_index = av_find_best_stream(&context, AVMEDIA_TYPE_VIDEO, -1, -1, 0, 0);
+
+ if (video_index > -1)
+ {
+ auto video_stream = context.streams[video_index];
+ auto video_context = context.streams[video_index]->codec;
+
+ if (boost::filesystem::path(context.filename).extension().string() == ".flv")
+ {
+ try
+ {
+ auto meta = read_flv_meta_info(context.filename);
+ double fps = boost::lexical_cast<double>(meta["framerate"]);
+ video_stream->nb_frames = static_cast<int64_t>(boost::lexical_cast<double>(meta["duration"])*fps);
+ }
+ catch (...) {}
+ }
+ else
+ {
+ auto stream_time = video_stream->time_base;
+ auto duration = video_stream->duration;
+ auto codec_time = video_context->time_base;
+ auto ticks = video_context->ticks_per_frame;
+
+ if (video_stream->nb_frames == 0)
+ video_stream->nb_frames = (duration*stream_time.num*codec_time.den) / (stream_time.den*codec_time.num*ticks);
+ }
+ }
+ }
+
+ void queued_seek(const uint32_t target)
+ {
+ if (!thumbnail_mode_)
+ CASPAR_LOG(debug) << print() << " Seeking: " << target;
+
+ int flags = AVSEEK_FLAG_FRAME;
+ if(target == 0)
+ {
+ // Fix VP6 seeking
+ int vid_stream_index = av_find_best_stream(format_context_.get(), AVMEDIA_TYPE_VIDEO, -1, -1, 0, 0);
+ if(vid_stream_index >= 0)
+ {
+ auto codec_id = format_context_->streams[vid_stream_index]->codec->codec_id;
+ if(codec_id == CODEC_ID_VP6A || codec_id == CODEC_ID_VP6F || codec_id == CODEC_ID_VP6)
+ flags = AVSEEK_FLAG_BYTE;
+ }
+ }
+
+ auto stream = format_context_->streams[default_stream_index_];
+
+
+ auto fps = read_fps(*format_context_, 0.0);
+
+ THROW_ON_ERROR2(avformat_seek_file(
+ format_context_.get(),
+ default_stream_index_,
+ std::numeric_limits<int64_t>::min(),
+ static_cast<int64_t>((target / fps * stream->time_base.den) / stream->time_base.num),
+ std::numeric_limits<int64_t>::max(),
+ 0), print());
+
+ auto flush_packet = create_packet();
+ flush_packet->data = nullptr;
+ flush_packet->size = 0;
+ flush_packet->pos = target;
+
+ buffer_.push(flush_packet);
+ }
+
+ bool is_eof(int ret)
+ {
+ if(ret == AVERROR(EIO))
+ CASPAR_LOG(trace) << print() << " Received EIO, assuming EOF. ";
+ if(ret == AVERROR_EOF)
+ CASPAR_LOG(trace) << print() << " Received EOF. ";
+
+ return ret == AVERROR_EOF || ret == AVERROR(EIO) || frame_number_ >= length_; // av_read_frame doesn't always correctly return AVERROR_EOF;
+ }
+
+ int num_audio_streams() const
+ {
+ return 0; // TODO
+ }
+};
+
+input::input(const spl::shared_ptr<diagnostics::graph>& graph, const std::wstring& url_or_file, bool loop, uint32_t start, uint32_t length, bool thumbnail_mode, const ffmpeg_options& vid_params)
+ : impl_(new implementation(graph, url_or_file, loop, start, length, thumbnail_mode, vid_params)){}
+bool input::eof() const {return !impl_->executor_.is_running();}
+bool input::try_pop(std::shared_ptr<AVPacket>& packet){return impl_->try_pop(packet);}
+spl::shared_ptr<AVFormatContext> input::context(){return impl_->format_context_;}
+void input::start(uint32_t value){impl_->start_ = value;}
+uint32_t input::start() const{return impl_->start_;}
+void input::length(uint32_t value){impl_->length_ = value;}
+uint32_t input::length() const{return impl_->length_;}
+void input::loop(bool value){impl_->loop_ = value;}
+bool input::loop() const{return impl_->loop_;}
+int input::num_audio_streams() const { return impl_->num_audio_streams(); }
+std::future<bool> input::seek(uint32_t target){return impl_->seek(target);}
+}}
projects / casparcg / blobdiff