#include "butler.h"
#include "player.h"
#include "util.h"
+#include "log.h"
+#include "cross.h"
+#include "compose.hpp"
+#include "exceptions.h"
#include <boost/weak_ptr.hpp>
#include <boost/shared_ptr.hpp>
+#define LOG_TIMING(...) _log->log (String::compose(__VA_ARGS__), LogEntry::TYPE_TIMING);
+#define LOG_WARNING(...) _log->log (String::compose(__VA_ARGS__), LogEntry::TYPE_WARNING);
+
using std::cout;
using std::pair;
using std::make_pair;
+using std::string;
using boost::weak_ptr;
using boost::shared_ptr;
using boost::bind;
using boost::optional;
-/** Video readahead in frames */
-#define VIDEO_READAHEAD 10
-/** Audio readahead in frames */
-#define AUDIO_READAHEAD (48000*5)
+/** Minimum video readahead in frames */
+#define MINIMUM_VIDEO_READAHEAD 10
+/** Maximum video readahead in frames; should never be reached unless there are bugs in Player */
+#define MAXIMUM_VIDEO_READAHEAD 24
+/** Minimum audio readahead in frames */
+#define MINIMUM_AUDIO_READAHEAD (48000 * MINIMUM_VIDEO_READAHEAD / 24)
+/** Minimum audio readahead in frames; should never be reached unless there are bugs in Player */
+#define MAXIMUM_AUDIO_READAHEAD (48000 * MAXIMUM_VIDEO_READAHEAD / 24)
-Butler::Butler (weak_ptr<const Film> film, shared_ptr<Player> player, AudioMapping audio_mapping, int audio_channels)
- : _film (film)
- , _player (player)
+Butler::Butler (shared_ptr<Player> player, shared_ptr<Log> log, AudioMapping audio_mapping, int audio_channels)
+ : _player (player)
+ , _log (log)
+ , _prepare_work (new boost::asio::io_service::work (_prepare_service))
, _pending_seek_accurate (false)
, _finished (false)
, _died (false)
{
_player_video_connection = _player->Video.connect (bind (&Butler::video, this, _1, _2));
_player_audio_connection = _player->Audio.connect (bind (&Butler::audio, this, _1));
- _player_changed_connection = _player->Changed.connect (bind (&Butler::player_changed, this));
+ _player_changed_connection = _player->Changed.connect (bind (&Butler::player_changed, this, _1));
_thread = new boost::thread (bind (&Butler::thread, this));
+#ifdef DCPOMATIC_LINUX
+ pthread_setname_np (_thread->native_handle(), "butler");
+#endif
+
+ /* Create some threads to do work on the PlayerVideos we are creating; at present this is used to
+ multi-thread JPEG2000 decoding.
+ */
+
+ LOG_TIMING("start-prepare-threads %1", boost::thread::hardware_concurrency());
+ for (size_t i = 0; i < boost::thread::hardware_concurrency(); ++i) {
+ _prepare_pool.create_thread (bind (&boost::asio::io_service::run, &_prepare_service));
+ }
}
Butler::~Butler ()
_stop_thread = true;
}
+ _prepare_work.reset ();
+ _prepare_pool.join_all ();
+ _prepare_service.stop ();
+
_thread->interrupt ();
try {
_thread->join ();
bool
Butler::should_run () const
{
- return (_video.size() < VIDEO_READAHEAD || (!_disable_audio && _audio.size() < AUDIO_READAHEAD)) && !_stop_thread && !_finished && !_died;
+ if (_video.size() >= MAXIMUM_VIDEO_READAHEAD * 10) {
+ /* This is way too big */
+ throw ProgrammingError
+ (__FILE__, __LINE__, String::compose ("Butler video buffers reached %1 frames (audio is %2)", _video.size(), _audio.size()));
+ }
+
+ if (_audio.size() >= MAXIMUM_AUDIO_READAHEAD * 10) {
+ /* This is way too big */
+ throw ProgrammingError
+ (__FILE__, __LINE__, String::compose ("Butler audio buffers reached %1 frames (video is %2)", _audio.size(), _video.size()));
+ }
+
+ if (_video.size() >= MAXIMUM_VIDEO_READAHEAD * 2) {
+ LOG_WARNING ("Butler video buffers reached %1 frames (audio is %2)", _video.size(), _audio.size());
+ }
+
+ if (_audio.size() >= MAXIMUM_AUDIO_READAHEAD * 2) {
+ LOG_WARNING ("Butler audio buffers reached %1 frames (video is %2)", _audio.size(), _video.size());
+ }
+
+ if (_stop_thread || _finished || _died) {
+ /* Definitely do not run */
+ return false;
+ }
+
+ if (_video.size() < MINIMUM_VIDEO_READAHEAD || (!_disable_audio && _audio.size() < MINIMUM_AUDIO_READAHEAD)) {
+ /* Definitely do run: we need data */
+ return true;
+ }
+
+ /* Run if we aren't full of video or audio */
+ return (_video.size() < MAXIMUM_VIDEO_READAHEAD) && (_audio.size() < MAXIMUM_AUDIO_READAHEAD);
}
void
Butler::seek (DCPTime position, bool accurate)
{
boost::mutex::scoped_lock lm (_mutex);
+ seek_unlocked (position, accurate);
+}
+
+void
+Butler::seek_unlocked (DCPTime position, bool accurate)
+{
if (_died) {
return;
}
- _video.clear ();
- _audio.clear ();
+ {
+ boost::mutex::scoped_lock lm (_video_audio_mutex);
+ _video.clear ();
+ _audio.clear ();
+ }
+
_finished = false;
_pending_seek_position = position;
_pending_seek_accurate = accurate;
_summon.notify_all ();
}
+void
+Butler::prepare (weak_ptr<PlayerVideo> weak_video) const
+{
+ shared_ptr<PlayerVideo> video = weak_video.lock ();
+ /* If the weak_ptr cannot be locked the video obviously no longer requires any work */
+ if (video) {
+ LOG_TIMING("start-prepare in %1", thread_id());
+ video->prepare ();
+ LOG_TIMING("finish-prepare in %1", thread_id());
+ }
+}
+
void
Butler::video (shared_ptr<PlayerVideo> video, DCPTime time)
{
- {
- boost::mutex::scoped_lock lm (_mutex);
- if (_pending_seek_position) {
- /* Don't store any video while a seek is pending */
- return;
- }
+ boost::mutex::scoped_lock lm (_mutex);
+
+ if (_pending_seek_position) {
+ /* Don't store any video while a seek is pending */
+ return;
}
+ _prepare_service.post (bind (&Butler::prepare, this, weak_ptr<PlayerVideo>(video)));
+
+ boost::mutex::scoped_lock lm2 (_video_audio_mutex);
_video.put (video, time);
}
}
}
+ boost::mutex::scoped_lock lm2 (_video_audio_mutex);
_audio.put (remap (audio, _audio_channels, _audio_mapping));
}
+/** Try to get `frames' frames of audio and copy it into `out'. Silence
+ * will be filled if no audio is available.
+ * @return true if there was a buffer underrun, otherwise false.
+ */
+bool
+Butler::get_audio (float* out, Frame frames)
+{
+ bool const underrun = _audio.get (out, _audio_channels, frames);
+ _summon.notify_all ();
+ return underrun;
+}
+
void
-Butler::player_changed ()
+Butler::disable_audio ()
{
- optional<DCPTime> t;
+ boost::mutex::scoped_lock lm (_mutex);
+ _disable_audio = true;
+}
- {
- boost::mutex::scoped_lock lm (_mutex);
- t = _video.earliest ();
+pair<size_t, string>
+Butler::memory_used () const
+{
+ /* XXX: should also look at _audio.memory_used() */
+ return _video.memory_used();
+}
+
+void
+Butler::player_changed (int what)
+{
+ boost::mutex::scoped_lock lm (_mutex);
+ if (_died || _pending_seek_position) {
+ return;
}
- if (t) {
- seek (*t, true);
+ DCPTime seek_to;
+ DCPTime next = _video.get().second;
+ if (_awaiting && _awaiting > next) {
+ /* We have recently done a player_changed seek and our buffers haven't been refilled yet,
+ so assume that we're seeking to the same place as last time.
+ */
+ seek_to = *_awaiting;
} else {
+ seek_to = next;
+ }
+
+ {
+ boost::mutex::scoped_lock lm (_video_audio_mutex);
_video.clear ();
_audio.clear ();
}
-}
-void
-Butler::get_audio (float* out, Frame frames)
-{
- _audio.get (out, _audio_channels, frames);
+ _finished = false;
_summon.notify_all ();
-}
-void
-Butler::disable_audio ()
-{
- boost::mutex::scoped_lock lm (_mutex);
- _disable_audio = true;
+ seek_unlocked (seek_to, true);
+ _awaiting = seek_to;
}
projects / dcpomatic.git / blobdiff