* @brief Parent class for classes which can encode video and audio frames.
*/
+#include <iostream>
#include <boost/filesystem.hpp>
#include <boost/lexical_cast.hpp>
+#include <libdcp/picture_asset.h>
#include "encoder.h"
#include "util.h"
#include "options.h"
#include "config.h"
#include "dcp_video_frame.h"
#include "server.h"
+#include "format.h"
#include "cross.h"
using std::pair;
using std::vector;
using std::list;
using std::cout;
+using std::make_pair;
using namespace boost;
int const Encoder::_history_size = 25;
+unsigned int const Encoder::_maximum_frames_in_memory = 8;
/** @param f Film that we are encoding.
* @param o Options.
*/
-Encoder::Encoder (shared_ptr<const Film> f, shared_ptr<const EncodeOptions> o)
+Encoder::Encoder (shared_ptr<const Film> f)
: _film (f)
- , _opt (o)
, _just_skipped (false)
- , _video_frame (0)
- , _audio_frame (0)
+ , _video_frames_in (0)
+ , _audio_frames_in (0)
+ , _video_frames_out (0)
+ , _audio_frames_out (0)
#ifdef HAVE_SWRESAMPLE
, _swr_context (0)
-#endif
- , _audio_frames_written (0)
- , _process_end (false)
+#endif
+ , _have_a_real_frame (false)
+ , _terminate_encoder (false)
+ , _writer_thread (0)
+ , _finish_writer (false)
+ , _last_written_frame (-1)
{
if (_film->audio_stream()) {
/* Create sound output files with .tmp suffixes; we will rename
them if and when we complete.
*/
- for (int i = 0; i < _film->audio_channels(); ++i) {
+ for (int i = 0; i < dcp_audio_channels (_film->audio_channels()); ++i) {
SF_INFO sf_info;
sf_info.samplerate = dcp_audio_sample_rate (_film->audio_stream()->sample_rate());
/* We write mono files */
sf_info.channels = 1;
sf_info.format = SF_FORMAT_WAV | SF_FORMAT_PCM_24;
- SNDFILE* f = sf_open (_opt->multichannel_audio_out_path (i, true).c_str (), SFM_WRITE, &sf_info);
+ SNDFILE* f = sf_open (_film->multichannel_audio_out_path (i, true).c_str (), SFM_WRITE, &sf_info);
if (f == 0) {
- throw CreateFileError (_opt->multichannel_audio_out_path (i, true));
+ throw CreateFileError (_film->multichannel_audio_out_path (i, true));
}
_sound_files.push_back (f);
}
{
close_sound_files ();
terminate_worker_threads ();
+ finish_writer_thread ();
}
void
_worker_threads.push_back (new boost::thread (boost::bind (&Encoder::encoder_thread, this, *i)));
}
}
+
+ /* XXX! */
+ _picture_asset.reset (
+ new libdcp::MonoPictureAsset (
+ _film->dir (_film->dcp_name()),
+ String::compose ("video_%1.mxf", 0),
+ DCPFrameRate (_film->frames_per_second()).frames_per_second,
+ _film->format()->dcp_size()
+ )
+ );
+
+ _picture_asset_writer = _picture_asset->start_write ();
+ _writer_thread = new boost::thread (boost::bind (&Encoder::writer_thread, this));
}
Encoder::process_end ()
{
#if HAVE_SWRESAMPLE
- if (_film->audio_stream() && _swr_context) {
+ if (_film->audio_stream() && _film->audio_stream()->channels() && _swr_context) {
shared_ptr<AudioBuffers> out (new AudioBuffers (_film->audio_stream()->channels(), 256));
close_sound_files ();
/* Rename .wav.tmp files to .wav */
- for (int i = 0; i < _film->audio_channels(); ++i) {
- if (boost::filesystem::exists (_opt->multichannel_audio_out_path (i, false))) {
- boost::filesystem::remove (_opt->multichannel_audio_out_path (i, false));
+ for (int i = 0; i < dcp_audio_channels (_film->audio_channels()); ++i) {
+ if (boost::filesystem::exists (_film->multichannel_audio_out_path (i, false))) {
+ boost::filesystem::remove (_film->multichannel_audio_out_path (i, false));
}
- boost::filesystem::rename (_opt->multichannel_audio_out_path (i, true), _opt->multichannel_audio_out_path (i, false));
+ boost::filesystem::rename (_film->multichannel_audio_out_path (i, true), _film->multichannel_audio_out_path (i, false));
}
}
boost::mutex::scoped_lock lock (_worker_mutex);
- _film->log()->log ("Clearing queue of " + lexical_cast<string> (_queue.size ()));
+ _film->log()->log ("Clearing queue of " + lexical_cast<string> (_encode_queue.size ()));
/* Keep waking workers until the queue is empty */
- while (!_queue.empty ()) {
- _film->log()->log ("Waking with " + lexical_cast<string> (_queue.size ()), Log::VERBOSE);
+ while (!_encode_queue.empty ()) {
+ _film->log()->log ("Waking with " + lexical_cast<string> (_encode_queue.size ()), Log::VERBOSE);
_worker_condition.notify_all ();
_worker_condition.wait (lock);
}
terminate_worker_threads ();
- _film->log()->log ("Mopping up " + lexical_cast<string> (_queue.size()));
+ _film->log()->log ("Mopping up " + lexical_cast<string> (_encode_queue.size()));
/* The following sequence of events can occur in the above code:
1. a remote worker takes the last image off the queue
So just mop up anything left in the queue here.
*/
- for (list<shared_ptr<DCPVideoFrame> >::iterator i = _queue.begin(); i != _queue.end(); ++i) {
+ for (list<shared_ptr<DCPVideoFrame> >::iterator i = _encode_queue.begin(); i != _encode_queue.end(); ++i) {
_film->log()->log (String::compose ("Encode left-over frame %1", (*i)->frame ()));
try {
shared_ptr<EncodedData> e = (*i)->encode_locally ();
- e->write (_opt, (*i)->frame ());
+ {
+ boost::mutex::scoped_lock lock2 (_writer_mutex);
+ _write_queue.push_back (make_pair (e, (*i)->frame ()));
+ _writer_condition.notify_all ();
+ }
frame_done ();
} catch (std::exception& e) {
_film->log()->log (String::compose ("Local encode failed (%1)", e.what ()));
}
}
+
+ finish_writer_thread ();
+ _picture_asset_writer->finalize ();
}
/** @return an estimate of the current number of frames we are encoding per second,
return _just_skipped;
}
-/** @return Number of video frames that have been received */
-SourceFrame
-Encoder::video_frame () const
+/** @return Number of video frames that have been sent out */
+int
+Encoder::video_frames_out () const
{
boost::mutex::scoped_lock (_history_mutex);
- return _video_frame;
+ return _video_frames_out;
}
/** Should be called when a frame has been encoded successfully.
void
Encoder::process_video (shared_ptr<Image> image, bool same, boost::shared_ptr<Subtitle> sub)
{
- if (_opt->video_skip != 0 && (_video_frame % _opt->video_skip) != 0) {
- ++_video_frame;
+ DCPFrameRate dfr (_film->frames_per_second ());
+
+ if (dfr.skip && (_video_frames_in % 2)) {
+ ++_video_frames_in;
return;
}
- if (_opt->video_range) {
- pair<SourceFrame, SourceFrame> const r = _opt->video_range.get();
- if (_video_frame < r.first || _video_frame >= r.second) {
- ++_video_frame;
- return;
- }
- }
-
boost::mutex::scoped_lock lock (_worker_mutex);
/* Wait until the queue has gone down a bit */
- while (_queue.size() >= _worker_threads.size() * 2 && !_process_end) {
- TIMING ("decoder sleeps with queue of %1", _queue.size());
+ while (_encode_queue.size() >= _worker_threads.size() * 2 && !_terminate_encoder) {
+ TIMING ("decoder sleeps with queue of %1", _encode_queue.size());
_worker_condition.wait (lock);
- TIMING ("decoder wakes with queue of %1", _queue.size());
+ TIMING ("decoder wakes with queue of %1", _encode_queue.size());
}
- if (_process_end) {
+ if (_terminate_encoder) {
return;
}
/* Only do the processing if we don't already have a file for this frame */
- if (boost::filesystem::exists (_opt->frame_out_path (_video_frame, false))) {
+ if (boost::filesystem::exists (_film->frame_out_path (_video_frames_out, false))) {
frame_skipped ();
return;
}
- if (same) {
- /* Use the last frame that we encoded */
- assert (_last_real_frame);
- link (_opt->frame_out_path (_last_real_frame.get(), false), _opt->frame_out_path (_video_frame, false));
- link (_opt->hash_out_path (_last_real_frame.get(), false), _opt->hash_out_path (_video_frame, false));
+ if (same && _have_a_real_frame) {
+ /* Use the last frame that we encoded. We do this by putting a null encoded
+ frame straight onto the writer's queue. It will know to duplicate the previous frame
+ in this case.
+ */
+ boost::mutex::scoped_lock lock2 (_writer_mutex);
+ _write_queue.push_back (make_pair (shared_ptr<EncodedData> (), _video_frames_out));
} else {
/* Queue this new frame for encoding */
pair<string, string> const s = Filter::ffmpeg_strings (_film->filters());
- TIMING ("adding to queue of %1", _queue.size ());
- _queue.push_back (boost::shared_ptr<DCPVideoFrame> (
+ TIMING ("adding to queue of %1", _encode_queue.size ());
+ _encode_queue.push_back (boost::shared_ptr<DCPVideoFrame> (
new DCPVideoFrame (
- image, sub, _opt->out_size, _opt->padding, _film->subtitle_offset(), _film->subtitle_scale(),
- _film->scaler(), _video_frame, _film->frames_per_second(), s.second,
- Config::instance()->colour_lut_index (), Config::instance()->j2k_bandwidth (),
+ image, sub, _film->format()->dcp_size(), _film->format()->dcp_padding (_film),
+ _film->subtitle_offset(), _film->subtitle_scale(),
+ _film->scaler(), _video_frames_out, _film->frames_per_second(), s.second,
+ _film->colour_lut(), _film->j2k_bandwidth(),
_film->log()
)
));
_worker_condition.notify_all ();
- _last_real_frame = _video_frame;
+ _have_a_real_frame = true;
}
- ++_video_frame;
+ ++_video_frames_in;
+ ++_video_frames_out;
+
+ if (dfr.repeat) {
+ boost::mutex::scoped_lock lock2 (_writer_mutex);
+ _write_queue.push_back (make_pair (shared_ptr<EncodedData> (), _video_frames_out));
+ ++_video_frames_out;
+ }
}
void
Encoder::process_audio (shared_ptr<AudioBuffers> data)
{
- if (_opt->audio_range) {
- shared_ptr<AudioBuffers> trimmed (new AudioBuffers (*data.get ()));
-
- /* Range that we are encoding */
- pair<int64_t, int64_t> required_range = _opt->audio_range.get();
- /* Range of this block of data */
- pair<int64_t, int64_t> this_range (_audio_frame, _audio_frame + trimmed->frames());
-
- if (this_range.second < required_range.first || required_range.second < this_range.first) {
- /* No part of this audio is within the required range */
- return;
- } else if (required_range.first >= this_range.first && required_range.first < this_range.second) {
- /* Trim start */
- int64_t const shift = required_range.first - this_range.first;
- trimmed->move (shift, 0, trimmed->frames() - shift);
- trimmed->set_frames (trimmed->frames() - shift);
- } else if (required_range.second >= this_range.first && required_range.second < this_range.second) {
- /* Trim end */
- trimmed->set_frames (required_range.second - this_range.first);
- }
-
- data = trimmed;
- }
-
#if HAVE_SWRESAMPLE
/* Maybe sample-rate convert */
if (_swr_context) {
}
#endif
+ if (_film->audio_channels() == 1) {
+ /* We need to switch things around so that the mono channel is on
+ the centre channel of a 5.1 set (with other channels silent).
+ */
+
+ shared_ptr<AudioBuffers> b (new AudioBuffers (6, data->frames ()));
+ b->make_silent (libdcp::LEFT);
+ b->make_silent (libdcp::RIGHT);
+ memcpy (b->data()[libdcp::CENTRE], data->data()[0], data->frames() * sizeof(float));
+ b->make_silent (libdcp::LFE);
+ b->make_silent (libdcp::LS);
+ b->make_silent (libdcp::RS);
+
+ data = b;
+ }
+
write_audio (data);
- _audio_frame += data->frames ();
+ _audio_frames_in += data->frames ();
}
void
Encoder::write_audio (shared_ptr<const AudioBuffers> audio)
{
- for (int i = 0; i < _film->audio_channels(); ++i) {
+ for (int i = 0; i < audio->channels(); ++i) {
sf_write_float (_sound_files[i], audio->data(i), audio->frames());
}
- _audio_frames_written += audio->frames ();
+ _audio_frames_out += audio->frames ();
}
void
Encoder::terminate_worker_threads ()
{
boost::mutex::scoped_lock lock (_worker_mutex);
- _process_end = true;
+ _terminate_encoder = true;
_worker_condition.notify_all ();
lock.unlock ();
}
}
+void
+Encoder::finish_writer_thread ()
+{
+ if (!_writer_thread) {
+ return;
+ }
+
+ boost::mutex::scoped_lock lock (_writer_mutex);
+ _finish_writer = true;
+ _writer_condition.notify_all ();
+ lock.unlock ();
+
+ _writer_thread->join ();
+ delete _writer_thread;
+ _writer_thread = 0;
+}
+
void
Encoder::encoder_thread (ServerDescription* server)
{
TIMING ("encoder thread %1 sleeps", boost::this_thread::get_id());
boost::mutex::scoped_lock lock (_worker_mutex);
- while (_queue.empty () && !_process_end) {
+ while (_encode_queue.empty () && !_terminate_encoder) {
_worker_condition.wait (lock);
}
- if (_process_end) {
+ if (_terminate_encoder) {
return;
}
- TIMING ("encoder thread %1 wakes with queue of %2", boost::this_thread::get_id(), _queue.size());
- boost::shared_ptr<DCPVideoFrame> vf = _queue.front ();
+ TIMING ("encoder thread %1 wakes with queue of %2", boost::this_thread::get_id(), _encode_queue.size());
+ boost::shared_ptr<DCPVideoFrame> vf = _encode_queue.front ();
_film->log()->log (String::compose ("Encoder thread %1 pops frame %2 from queue", boost::this_thread::get_id(), vf->frame()), Log::VERBOSE);
- _queue.pop_front ();
+ _encode_queue.pop_front ();
lock.unlock ();
}
if (encoded) {
- encoded->write (_opt, vf->frame ());
- frame_done ();
+ boost::mutex::scoped_lock lock2 (_writer_mutex);
+ _write_queue.push_back (make_pair (encoded, vf->frame ()));
+ _writer_condition.notify_all ();
} else {
lock.lock ();
_film->log()->log (
String::compose ("Encoder thread %1 pushes frame %2 back onto queue after failure", boost::this_thread::get_id(), vf->frame())
);
- _queue.push_front (vf);
+ _encode_queue.push_front (vf);
lock.unlock ();
}
boost::filesystem::copy_file (a, b);
#endif
}
+
+struct WriteQueueSorter
+{
+ bool operator() (pair<shared_ptr<EncodedData>, int> const & a, pair<shared_ptr<EncodedData>, int> const & b) {
+ return a.second < b.second;
+ }
+};
+
+void
+Encoder::writer_thread ()
+{
+ while (1)
+ {
+ boost::mutex::scoped_lock lock (_writer_mutex);
+
+ while (1) {
+ if (_finish_writer ||
+ _write_queue.size() > _maximum_frames_in_memory ||
+ (!_write_queue.empty() && _write_queue.front().second == (_last_written_frame + 1))) {
+
+ break;
+ }
+
+ TIMING ("writer sleeps with a queue of %1; %2 pending", _write_queue.size(), _pending.size());
+ _writer_condition.wait (lock);
+ TIMING ("writer wakes with a queue of %1", _write_queue.size());
+
+ _write_queue.sort (WriteQueueSorter ());
+ }
+
+ if (_finish_writer && _write_queue.empty() && _pending.empty()) {
+ return;
+ }
+
+ /* Write any frames that we can write; i.e. those that are in sequence */
+ while (!_write_queue.empty() && _write_queue.front().second == (_last_written_frame + 1)) {
+ pair<boost::shared_ptr<EncodedData>, int> encoded = _write_queue.front ();
+ _write_queue.pop_front ();
+
+ lock.unlock ();
+ /* XXX: write to mxf */
+ _film->log()->log (String::compose ("Writer writes %1 to MXF", encoded.second));
+ if (encoded.first) {
+ _picture_asset_writer->write (encoded.first->data(), encoded.first->size());
+ _last_written = encoded.first;
+ } else {
+ _picture_asset_writer->write (_last_written->data(), _last_written->size());
+ }
+ lock.lock ();
+
+ ++_last_written_frame;
+ }
+
+ while (_write_queue.size() > _maximum_frames_in_memory) {
+ /* Too many frames in memory which can't yet be written to the stream.
+ Put some to disk.
+ */
+
+ pair<boost::shared_ptr<EncodedData>, int> encoded = _write_queue.front ();
+ _write_queue.pop_back ();
+ if (!encoded.first) {
+ /* This is a `repeat-last' frame, so no need to write it to disk */
+ continue;
+ }
+
+ lock.unlock ();
+ _film->log()->log (String::compose ("Writer full; pushes %1 to disk", encoded.second));
+ encoded.first->write (_film, encoded.second);
+ lock.lock ();
+
+ _pending.push_back (encoded.second);
+ }
+
+ while (_write_queue.size() < _maximum_frames_in_memory && !_pending.empty()) {
+ /* We have some space in memory. Fetch some frames back off disk. */
+
+ _pending.sort ();
+ int const fetch = _pending.front ();
+
+ lock.unlock ();
+ _film->log()->log (String::compose ("Writer pulls %1 back from disk", fetch));
+ shared_ptr<EncodedData> encoded;
+ if (boost::filesystem::exists (_film->frame_out_path (fetch, false))) {
+ /* It's an actual frame (not a repeat-last); load it in */
+ encoded.reset (new EncodedData (_film->frame_out_path (fetch, false)));
+ }
+ lock.lock ();
+
+ _write_queue.push_back (make_pair (encoded, fetch));
+ _pending.remove (fetch);
+ }
+ }
+}
projects / dcpomatic.git / blobdiff