namespace caspar { namespace ffmpeg {
+static const int MAX_PUSH_WITHOUT_POP = 200;
static const int MIN_FRAMES = 25;
class stream
typedef tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>>::size_type size_type;
- int index_;
- tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>> packets_;
+ int index_;
+ tbb::concurrent_bounded_queue<std::shared_ptr<AVPacket>> packets_;
+ tbb::atomic<int> push_since_pop_;
public:
stream(int index)
: index_(index)
{
+ push_since_pop_ = 0;
}
+ stream(stream&&) = default;
+
bool is_available() const
{
return index_ >= 0;
}
+
+ int index() const
+ {
+ return index_;
+ }
void push(const std::shared_ptr<AVPacket>& packet)
{
if(packet && packet->data && packet->stream_index != index_)
return;
+ if (++push_since_pop_ > MAX_PUSH_WITHOUT_POP) // Out of memory protection for streams never being used.
+ {
+ return;
+ }
+
packets_.push(packet);
}
bool try_pop(std::shared_ptr<AVPacket>& packet)
{
+ push_since_pop_ = 0;
+
return packets_.try_pop(packet);
}
void clear()
{
std::shared_ptr<AVPacket> packet;
+ push_since_pop_ = 0;
while(packets_.try_pop(packet));
}
tbb::atomic<uint32_t> length_;
tbb::atomic<bool> loop_;
tbb::atomic<bool> eof_;
- bool thumbnail_mode_;
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_ { thumbnail_mode_ ? -1 : av_find_best_stream(format_context_.get(), AVMEDIA_TYPE_AUDIO, -1, -1, 0, 0) };
+ std::vector<stream> audio_streams_;
boost::optional<uint32_t> seek_target_;
bool thumbnail_mode)
: graph_(graph)
, filename_(filename)
- , thumbnail_mode_(thumbnail_mode)
{
start_ = start;
length_ = length;
graph_->set_color("seek", diagnostics::color(1.0f, 0.5f, 0.0f));
- if (audio_stream_.is_available())
- graph_->set_color("audio-buffer", diagnostics::color(0.7f, 0.4f, 0.4f));
+ if (!thumbnail_mode)
+ for (unsigned i = 0; i < format_context_->nb_streams; ++i)
+ if (format_context_->streams[i]->codec->codec_type == AVMediaType::AVMEDIA_TYPE_AUDIO)
+ audio_streams_.emplace_back(i);
+
+ for (int i = 0; i < audio_streams_.size(); ++i)
+ graph_->set_color("audio-buffer" + boost::lexical_cast<std::string>(i + 1), diagnostics::color(0.7f, 0.4f, 0.4f));
if (video_stream_.is_available())
graph_->set_color("video-buffer", diagnostics::color(1.0f, 1.0f, 0.0f));
for(int n = 0; n < 8; ++n)
tick();
- if (!thumbnail_mode)
- thread_ = boost::thread([this]{run();});
+ thread_ = boost::thread([this, thumbnail_mode]{run(thumbnail_mode);});
}
~impl()
{
is_running_ = false;
cond_.notify_one();
-
- if (!thumbnail_mode_)
- thread_.join();
+ thread_.join();
}
bool try_pop_video(std::shared_ptr<AVPacket>& packet)
if (!video_stream_.is_available())
return false;
- if (thumbnail_mode_)
- {
- int ticks = 0;
- while (!video_stream_.try_pop(packet))
- {
- tick();
- if (++ticks > 32) // Infinite loop should not be possible
- return false;
-
- // Play nice
- boost::this_thread::sleep_for(boost::chrono::milliseconds(5));
- }
-
- return true;
- }
-
bool result = video_stream_.try_pop(packet);
if(result)
return result;
}
- bool try_pop_audio(std::shared_ptr<AVPacket>& packet)
+ bool try_pop_audio(std::shared_ptr<AVPacket>& packet, int audio_stream_index)
{
- if (!audio_stream_.is_available())
+ if (audio_streams_.size() < audio_stream_index + 1)
return false;
- bool result = audio_stream_.try_pop(packet);
+ auto& audio_stream = audio_streams_.at(audio_stream_index);
+ 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));
+
+ auto buffer_nr = boost::lexical_cast<std::string>(audio_stream_index + 1);
+ graph_->set_value("audio-buffer" + buffer_nr, std::min(1.0, static_cast<double>(audio_stream.size())/MIN_FRAMES));
return result;
}
seek_target_ = target;
video_stream_.clear();
- audio_stream_.clear();
+
+ for (auto& audio_stream : audio_streams_)
+ audio_stream.clear();
}
cond_.notify_one();
}
+
+ int get_actual_audio_stream_index(int audio_stream_index) const
+ {
+ if (audio_stream_index + 1 > audio_streams_.size())
+ CASPAR_THROW_EXCEPTION(averror_stream_not_found());
+
+ return audio_streams_.at(audio_stream_index).index();
+ }
std::wstring print() const
{
auto stream = format_context_->streams[default_stream_index_];
auto fps = read_fps(*format_context_, 0.0);
- auto target_timestamp = static_cast<int64_t>((target / fps * stream->time_base.den) / stream->time_base.num);
+ auto target_timestamp = static_cast<int64_t>((target / fps * stream->time_base.den) / stream->time_base.num);
THROW_ON_ERROR2(avformat_seek_file(
format_context_.get(),
target_timestamp,
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;
- video_stream_.push(nullptr);
- audio_stream_.push(nullptr);
+ video_stream_.push(flush_packet);
+
+ for (auto& audio_stream : audio_streams_)
+ audio_stream.push(flush_packet);
}
void tick()
if(packet_frame_number >= start_ && packet_frame_number < length_)
{
video_stream_.push(packet);
- audio_stream_.push(packet);
+
+ for (auto& audio_stream : audio_streams_)
+ audio_stream.push(packet);
}
}
if (video_stream_.is_available())
graph_->set_value("video-buffer", std::min(1.0, static_cast<double>(video_stream_.size())/MIN_FRAMES));
- if (audio_stream_.is_available())
- graph_->set_value("audio-buffer", std::min(1.0, static_cast<double>(audio_stream_.size())/MIN_FRAMES));
+ for (int i = 0; i < audio_streams_.size(); ++i)
+ graph_->set_value(
+ "audio-buffer" + boost::lexical_cast<std::string>(i + 1),
+ std::min(1.0, static_cast<double>(audio_streams_[i].size())/MIN_FRAMES));
}
bool full() const
{
- return video_stream_.size() >= MIN_FRAMES && audio_stream_.size() >= MIN_FRAMES;
+ bool video_full = video_stream_.size() >= MIN_FRAMES;
+
+ if (!video_full)
+ return false;
+
+ for (auto& audio_stream : audio_streams_)
+ if (audio_stream.size() < MIN_FRAMES)
+ return false;
+
+ return true;
}
- void run()
+ void run(bool thumbnail_mode)
{
ensure_gpf_handler_installed_for_thread(u8(print()).c_str());
+ auto quiet_logging = temporary_enable_quiet_logging_for_thread(thumbnail_mode);
while(is_running_)
{
{
boost::unique_lock<boost::mutex> lock(mutex_);
- while(full() && !seek_target_ && is_running_)
+ while((eof_ || full()) && !seek_target_ && is_running_)
cond_.wait(lock);
tick();
input::input(const spl::shared_ptr<diagnostics::graph>& graph, const std::wstring& filename, bool loop, uint32_t start, uint32_t length, bool thumbnail_mode)
: impl_(new impl(graph, filename, loop, start, length, thumbnail_mode)){}
+int input::get_actual_audio_stream_index(int audio_stream_index) const { return impl_->get_actual_audio_stream_index(audio_stream_index); };
+int input::num_audio_streams() const { return static_cast<int>(impl_->audio_streams_.size()); }
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);}
+bool input::try_pop_audio(std::shared_ptr<AVPacket>& packet, int audio_stream_index){return impl_->try_pop_audio(packet, audio_stream_index);}
AVFormatContext& input::context(){return *impl_->format_context_;}
void input::loop(bool value){impl_->loop_ = value;}
bool input::loop() const{return impl_->loop_;}
projects / casparcg / blobdiff