/*
-* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
+* Copyright 2013 Sveriges Television AB http://casparcg.com/
*
* This file is part of CasparCG (www.casparcg.com).
*
* Author: Robert Nagy, ronag89@gmail.com
*/
-#include "../../stdafx.h"
+#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/lock.h>
-//#include <common/except.h>
+#include <common/except.h>
#include <common/os/general_protection_fault.h>
-#include <common/log.h>
-
-#include <core/video_format.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/rational.hpp>
+#include <boost/range/algorithm.hpp>
#include <boost/thread/condition_variable.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/thread.hpp>
#pragma warning (push)
#pragma warning (disable : 4244)
#endif
-extern "C"
+extern "C"
{
#define __STDC_CONSTANT_MACROS
#define __STDC_LIMIT_MACROS
#pragma warning (pop)
#endif
-namespace caspar { namespace ffmpeg {
+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;
-static const int MIN_FRAMES = 25;
-
-class stream
+namespace caspar { namespace ffmpeg {
+struct input::implementation : boost::noncopyable
{
- stream(const stream&);
- stream& operator=(const stream&);
+ const spl::shared_ptr<diagnostics::graph> graph_;
- typedef tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>>::size_type size_type;
+ const spl::shared_ptr<AVFormatContext> format_context_; // Destroy this last
+ const int default_stream_index_ = av_find_default_stream_index(format_context_.get());
- int index_;
- tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>> packets_;
-public:
+ 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;
+ boost::rational<int> framerate_ = read_framerate(*format_context_, 1);
- stream(int index)
- : index_(index)
- {
- }
-
- void push(const std::shared_ptr<AVPacket>& packet)
- {
- if(packet && packet->data && packet->stream_index != index_)
- return;
+ tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>> buffer_;
+ tbb::atomic<size_t> buffer_size_;
- packets_.push(packet);
- }
+ executor executor_;
- bool try_pop(std::shared_ptr<AVPacket>& packet)
+ 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())
{
- return packets_.try_pop(packet);
- }
+ if (thumbnail_mode_)
+ executor_.invoke([]
+ {
+ enable_quiet_logging_for_thread();
+ });
- void clear()
- {
- std::shared_ptr<AVPacket> packet;
- while(packets_.try_pop(packet));
- }
-
- size_type size() const
- {
- return index_ != -1 ? packets_.size() : std::numeric_limits<size_type>::max();
- }
-};
-
-struct input::impl : boost::noncopyable
-{
- const spl::shared_ptr<diagnostics::graph> graph_;
-
- const std::wstring filename_;
- const spl::shared_ptr<AVFormatContext> format_context_ = open_input(filename_); // Destroy this last
- const int default_stream_index_ = av_find_default_stream_index(format_context_.get());
-
- tbb::atomic<uint32_t> start_;
- tbb::atomic<uint32_t> length_;
- tbb::atomic<bool> loop_;
- double fps_ = read_fps(*format_context_, 0.0);
- uint32_t frame_number_ = 0;
-
- stream video_stream_ = av_find_best_stream(format_context_.get(), AVMEDIA_TYPE_VIDEO, -1, -1, 0, 0);
- stream audio_stream_ = av_find_best_stream(format_context_.get(), AVMEDIA_TYPE_AUDIO, -1, -1, 0, 0);
-
- boost::optional<uint32_t> seek_target_;
-
- tbb::atomic<bool> is_running_;
- boost::mutex mutex_;
- boost::condition_variable cond_;
- boost::thread thread_;
-
- impl(const spl::shared_ptr<diagnostics::graph> graph, const std::wstring& filename, const bool loop, const uint32_t start, const uint32_t length)
- : graph_(graph)
- , filename_(filename)
- {
start_ = start;
length_ = length;
loop_ = loop;
- is_running_ = true;
-
- if(start_ != 0)
- seek_target_ = start_;
-
- graph_->set_color("seek", diagnostics::color(1.0f, 0.5f, 0.0f));
- graph_->set_color("audio-buffer", diagnostics::color(0.7f, 0.4f, 0.4f));
- graph_->set_color("video-buffer", diagnostics::color(1.0f, 1.0f, 0.0f));
-
- for(int n = 0; n < 8; ++n)
- tick();
+ buffer_size_ = 0;
+
+ if(start_ > 0)
+ queued_seek(start_);
- thread_ = boost::thread([this]{run();});
+ 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();
}
- ~impl()
+ bool try_pop(std::shared_ptr<AVPacket>& packet)
{
- is_running_ = false;
- cond_.notify_one();
- thread_.join();
- }
-
- bool try_pop_video(std::shared_ptr<AVPacket>& packet)
- {
- bool result = video_stream_.try_pop(packet);
+ auto result = buffer_.try_pop(packet);
+
if(result)
- cond_.notify_one();
-
- graph_->set_value("video-buffer", std::min(1.0, static_cast<double>(video_stream_.size()/MIN_FRAMES)));
-
+ {
+ 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;
}
-
- bool try_pop_audio(std::shared_ptr<AVPacket>& packet)
- {
- bool result = audio_stream_.try_pop(packet);
- if(result)
- cond_.notify_one();
-
- graph_->set_value("audio-buffer", std::min(1.0, static_cast<double>(audio_stream_.size()/MIN_FRAMES)));
- 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;
}
- void seek(uint32_t target)
+ std::future<bool> seek(uint32_t target)
{
+ if (!executor_.is_running())
+ return make_ready_future(false);
+
+ return executor_.begin_invoke([=]() -> bool
{
- boost::lock_guard<boost::mutex> lock(mutex_);
+ std::shared_ptr<AVPacket> packet;
+ while(buffer_.try_pop(packet) && packet)
+ buffer_size_ -= packet->size;
- seek_target_ = target;
- video_stream_.clear();
- audio_stream_.clear();
- }
-
- cond_.notify_one();
+ queued_seek(target);
+
+ tick();
+
+ return true;
+ }, task_priority::high_priority);
}
-
+
std::wstring print() const
{
return L"ffmpeg_input[" + filename_ + L")]";
}
-private:
- void internal_seek(uint32_t target)
+ bool full() const
{
- graph_->set_tag("seek");
+ return (buffer_size_ > MAX_BUFFER_SIZE || buffer_.size() > get_max_buffer_count()) && buffer_.size() > get_min_buffer_count();
+ }
- CASPAR_LOG(debug) << print() << " Seeking: " << target;
+ void tick()
+ {
+ if(!executor_.is_running())
+ return;
- int flags = AVSEEK_FLAG_FRAME;
- if(target == 0)
+ executor_.begin_invoke([this]
{
- // 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)
+ if(full())
+ return;
+
+ try
{
- 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 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();
}
- }
-
- auto stream = format_context_->streams[default_stream_index_];
- auto codec = stream->codec;
- auto fixed_target = (target*stream->time_base.den*codec->time_base.num)/(stream->time_base.num*codec->time_base.den)*codec->ticks_per_frame;
-
- THROW_ON_ERROR2(avformat_seek_file(format_context_.get(), default_stream_index_, std::numeric_limits<int64_t>::min(), fixed_target, fixed_target, 0), print());
-
- video_stream_.push(nullptr);
- audio_stream_.push(nullptr);
+ catch(...)
+ {
+ if (!thumbnail_mode_)
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ executor_.stop();
+ }
+ });
}
- void tick()
+ spl::shared_ptr<AVFormatContext> open_input(const std::wstring& url_or_file, const ffmpeg_options& vid_params)
{
- if(seek_target_)
- {
- internal_seek(*seek_target_);
- seek_target_.reset();
- }
+ AVDictionary* format_options = nullptr;
- 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))
+ CASPAR_SCOPE_EXIT
{
- video_stream_.push(packet);
- audio_stream_.push(packet);
+ if (format_options)
+ av_dict_free(&format_options);
+ };
- if(loop_)
- internal_seek(start_);
+ 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);
+ AVInputFormat* input_format = nullptr;
+
+ if (parts.at(0).empty())
+ resource_name = parts.at(1);
+ else if (parts.at(0) == L"dshow")
+ {
+ input_format = av_find_input_format("dshow");
+ resource_name = parts.at(1);
}
else
- {
- THROW_ON_ERROR(ret, "av_read_frame", print());
-
- 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.
- const auto size = packet->size;
- const auto data = packet->data;
-
- packet = spl::shared_ptr<AVPacket>(packet.get(), [packet, size, data](AVPacket*)
- {
- packet->size = size;
- packet->data = data;
- });
-
- const auto stream_time_base = format_context_->streams[packet->stream_index]->time_base;
- const auto packet_frame_number = static_cast<uint32_t>((static_cast<double>(packet->pts * stream_time_base.num)/stream_time_base.den)*fps_);
-
- if(packet->stream_index == default_stream_index_)
- frame_number_ = packet_frame_number;
-
- if(packet_frame_number >= start_ && packet_frame_number < length_)
+ resource_name = parts.at(0) + L"://" + parts.at(1);
+
+ 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)
{
- video_stream_.push(packet);
- audio_stream_.push(packet);
+ if (!unsupported_tokens.empty())
+ unsupported_tokens += ", ";
+ unsupported_tokens += t->key;
}
- }
-
- graph_->set_value("video-buffer", std::min(1.0, static_cast<double>(video_stream_.size()/MIN_FRAMES)));
- graph_->set_value("audio-buffer", std::min(1.0, static_cast<double>(audio_stream_.size()/MIN_FRAMES)));
- }
-
- bool full() const
- {
- return video_stream_.size() > MIN_FRAMES && audio_stream_.size() > MIN_FRAMES;
+ 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 run()
+ void fix_meta_data(AVFormatContext& context)
{
- ensure_gpf_handler_installed_for_thread(u8(print()).c_str());
+ auto video_index = av_find_best_stream(&context, AVMEDIA_TYPE_VIDEO, -1, -1, 0, 0);
- while(is_running_)
+ if (video_index > -1)
{
- try
+ auto video_stream = context.streams[video_index];
+ auto video_context = context.streams[video_index]->codec;
+
+ if (boost::filesystem::path(context.filename).extension().string() == ".flv")
{
- boost::this_thread::sleep(boost::posix_time::milliseconds(1));
-
+ try
{
- boost::unique_lock<boost::mutex> lock(mutex_);
-
- while(full() && !seek_target_ && is_running_)
- cond_.wait(lock);
-
- tick();
+ 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 (...) {}
}
- 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)
{
- CASPAR_LOG_CURRENT_EXCEPTION();
- is_running_ = false;
+ 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)
{
- #pragma warning (disable : 4146)
+ 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
+ }
+
+ boost::rational<int> framerate() const
+ {
+ return framerate_;
+ }
};
-input::input(const spl::shared_ptr<diagnostics::graph>& graph, const std::wstring& filename, bool loop, uint32_t start, uint32_t length)
- : impl_(new impl(graph, filename, loop, start, length)){}
-bool input::try_pop_video(std::shared_ptr<AVPacket>& packet){return impl_->try_pop_video(packet);}
-bool input::try_pop_audio(std::shared_ptr<AVPacket>& packet){return impl_->try_pop_audio(packet);}
-AVFormatContext& input::context(){return *impl_->format_context_;}
-void input::loop(bool value){impl_->loop_ = value;}
-bool input::loop() const{return impl_->loop_;}
-void input::seek(uint32_t target){impl_->seek(target);}
+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(); }
+boost::rational<int> input::framerate() const { return impl_->framerate(); }
+std::future<bool> input::seek(uint32_t target){return impl_->seek(target);}
}}
projects / casparcg / blobdiff