* @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"
+#include "writer.h"
using std::pair;
using std::string;
using std::vector;
using std::list;
using std::cout;
+using std::make_pair;
using namespace boost;
int const Encoder::_history_size = 25;
/** @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<Film> f)
: _film (f)
- , _opt (o)
- , _just_skipped (false)
- , _video_frame (0)
- , _audio_frame (0)
+ , _video_frames_in (0)
+ , _video_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)
{
- 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) {
- 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);
- if (f == 0) {
- throw CreateFileError (_opt->multichannel_audio_out_path (i, true));
- }
- _sound_files.push_back (f);
- }
- }
+
}
Encoder::~Encoder ()
{
- close_sound_files ();
terminate_worker_threads ();
+ if (_writer) {
+ _writer->finish ();
+ }
}
void
_worker_threads.push_back (new boost::thread (boost::bind (&Encoder::encoder_thread, this, *i)));
}
}
+
+ _writer.reset (new Writer (_film));
}
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));
}
out->set_frames (frames);
- write_audio (out);
+ _writer->write (out);
}
swr_free (&_swr_context);
}
#endif
- if (_film->audio_stream()) {
- 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));
- }
- boost::filesystem::rename (_opt->multichannel_audio_out_path (i, true), _opt->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 ());
+ _writer->write ((*i)->encode_locally(), (*i)->frame ());
frame_done ();
} catch (std::exception& e) {
_film->log()->log (String::compose ("Local encode failed (%1)", e.what ()));
}
}
+
+ _writer->finish ();
+ _writer.reset ();
}
/** @return an estimate of the current number of frames we are encoding per second,
return _history_size / (seconds (now) - seconds (_time_history.back ()));
}
-/** @return true if the last frame to be processed was skipped as it already existed */
-bool
-Encoder::skipping () const
-{
- boost::mutex::scoped_lock (_history_mutex);
- 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.
Encoder::frame_done ()
{
boost::mutex::scoped_lock lock (_history_mutex);
- _just_skipped = false;
struct timeval tv;
gettimeofday (&tv, 0);
}
}
-/** Called by a subclass when it has just skipped the processing
- of a frame because it has already been done.
-*/
-void
-Encoder::frame_skipped ()
-{
- boost::mutex::scoped_lock lock (_history_mutex);
- _just_skipped = true;
-}
-
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());
- }
-
- if (_process_end) {
- return;
+ TIMING ("decoder wakes with queue of %1", _encode_queue.size());
}
- /* 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))) {
- frame_skipped ();
+ if (_terminate_encoder) {
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. */
+ _writer->repeat (_video_frames_out);
+ frame_done ();
} 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) {
+ _writer->repeat (_video_frames_out);
+ ++_video_frames_out;
+ frame_done ();
+ }
}
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
- write_audio (data);
-
- _audio_frame += data->frames ();
-}
-
-void
-Encoder::write_audio (shared_ptr<const AudioBuffers> audio)
-{
- for (int i = 0; i < _film->audio_channels(); ++i) {
- sf_write_float (_sound_files[i], audio->data(i), audio->frames());
- }
+ 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).
+ */
- _audio_frames_written += audio->frames ();
-}
+ 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);
-void
-Encoder::close_sound_files ()
-{
- for (vector<SNDFILE*>::iterator i = _sound_files.begin(); i != _sound_files.end(); ++i) {
- sf_close (*i);
+ data = b;
}
- _sound_files.clear ();
-}
+ _writer->write (data);
+}
void
Encoder::terminate_worker_threads ()
{
boost::mutex::scoped_lock lock (_worker_mutex);
- _process_end = true;
+ _terminate_encoder = true;
_worker_condition.notify_all ();
lock.unlock ();
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 ());
+ _writer->write (encoded, vf->frame ());
frame_done ();
} 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 ();
}
_worker_condition.notify_all ();
}
}
-
-void
-Encoder::link (string a, string b) const
-{
-#ifdef DVDOMATIC_POSIX
- int const r = symlink (a.c_str(), b.c_str());
- if (r) {
- throw EncodeError (String::compose ("could not create symlink from %1 to %2", a, b));
- }
-#endif
-
-#ifdef DVDOMATIC_WINDOWS
- boost::filesystem::copy_file (a, b);
-#endif
-}
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