shared_ptr is a bit excessive for DecodeOptions.

28 files changed, 63 insertions, 69 deletions

diff --git a/src/lib/ab_transcode_job.cc b/src/lib/ab_transcode_job.cc
index 2dd8f95ad..0efd277bb 100644
--- a/src/lib/ab_transcode_job.cc
+++ b/src/lib/ab_transcode_job.cc
@@ -30,11 +30,11 @@ using std::string;
 using boost::shared_ptr;
 
 /** @param f Film to compare.
- *  @param o Options.
+ *  @param o Decode options.
  */
-ABTranscodeJob::ABTranscodeJob (shared_ptr<Film> f, shared_ptr<const DecodeOptions> od, shared_ptr<Job> req)
+ABTranscodeJob::ABTranscodeJob (shared_ptr<Film> f, DecodeOptions o, shared_ptr<Job> req)
 	: Job (f, req)
-	, _decode_opt (od)
+	, _decode_opt (o)
 {
 	_film_b.reset (new Film (*_film));
 	_film_b->set_scaler (Config::instance()->reference_scaler ());
diff --git a/src/lib/ab_transcode_job.h b/src/lib/ab_transcode_job.h
index 69c157651..983842038 100644
--- a/src/lib/ab_transcode_job.h
+++ b/src/lib/ab_transcode_job.h
@@ -23,9 +23,9 @@
 
 #include <boost/shared_ptr.hpp>
 #include "job.h"
+#include "options.h"
 
 class Film;
-class DecodeOptions;
 
 /** @class ABTranscodeJob
  *  @brief Job to run a transcoder which produces output for A/B comparison of various settings.
@@ -39,7 +39,7 @@ class ABTranscodeJob : public Job
 public:
 	ABTranscodeJob (
 		boost::shared_ptr<Film> f,
-		boost::shared_ptr<const DecodeOptions> od,
+		DecodeOptions o,
 		boost::shared_ptr<Job> req
 		);
 
@@ -47,7 +47,7 @@ public:
 	void run ();
 
 private:
-	boost::shared_ptr<const DecodeOptions> _decode_opt;
+	DecodeOptions _decode_opt;
 	
 	/** Copy of our Film using the reference filters and scaler */
 	boost::shared_ptr<Film> _film_b;
diff --git a/src/lib/ab_transcoder.cc b/src/lib/ab_transcoder.cc
index 53af43b5d..fc4fb8daa 100644
--- a/src/lib/ab_transcoder.cc
+++ b/src/lib/ab_transcoder.cc
@@ -49,7 +49,7 @@ using boost::shared_ptr;
  */
 
 ABTranscoder::ABTranscoder (
-	shared_ptr<Film> a, shared_ptr<Film> b, shared_ptr<const DecodeOptions> o, Job* j, shared_ptr<Encoder> e)
+	shared_ptr<Film> a, shared_ptr<Film> b, DecodeOptions o, Job* j, shared_ptr<Encoder> e)
 	: _film_a (a)
 	, _film_b (b)
 	, _job (j)
diff --git a/src/lib/ab_transcoder.h b/src/lib/ab_transcoder.h
index 7bfcb393c..58a08af04 100644
--- a/src/lib/ab_transcoder.h
+++ b/src/lib/ab_transcoder.h
@@ -31,7 +31,6 @@ class Job;
 class Encoder;
 class VideoDecoder;
 class AudioDecoder;
-class DecodeOptions;
 class Image;
 class Log;
 class Subtitle;
@@ -51,7 +50,7 @@ public:
 	ABTranscoder (
 		boost::shared_ptr<Film> a,
 		boost::shared_ptr<Film> b,
-		boost::shared_ptr<const DecodeOptions> o,
+		DecodeOptions o,
 		Job* j,
 		boost::shared_ptr<Encoder> e
 		);
diff --git a/src/lib/audio_decoder.cc b/src/lib/audio_decoder.cc
index 9d8de971c..a038dd2bb 100644
--- a/src/lib/audio_decoder.cc
+++ b/src/lib/audio_decoder.cc
@@ -23,7 +23,7 @@
 using boost::optional;
 using boost::shared_ptr;
 
-AudioDecoder::AudioDecoder (shared_ptr<Film> f, shared_ptr<const DecodeOptions> o, Job* j)
+AudioDecoder::AudioDecoder (shared_ptr<Film> f, DecodeOptions o, Job* j)
 	: Decoder (f, o, j)
 {
 
diff --git a/src/lib/audio_decoder.h b/src/lib/audio_decoder.h
index 013a6327f..3bf585f4d 100644
--- a/src/lib/audio_decoder.h
+++ b/src/lib/audio_decoder.h
@@ -34,7 +34,7 @@
 class AudioDecoder : public AudioSource, public virtual Decoder
 {
 public:
-	AudioDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const DecodeOptions>, Job *);
+	AudioDecoder (boost::shared_ptr<Film>, DecodeOptions, Job *);
 
 	virtual void set_audio_stream (boost::shared_ptr<AudioStream>);
 
diff --git a/src/lib/check_hashes_job.cc b/src/lib/check_hashes_job.cc
index 099845d8c..2ad97c382 100644
--- a/src/lib/check_hashes_job.cc
+++ b/src/lib/check_hashes_job.cc
@@ -34,9 +34,9 @@ using std::stringstream;
 using std::ifstream;
 using boost::shared_ptr;
 
-CheckHashesJob::CheckHashesJob (shared_ptr<Film> f, shared_ptr<const DecodeOptions> od, shared_ptr<Job> req)
+CheckHashesJob::CheckHashesJob (shared_ptr<Film> f, DecodeOptions o, shared_ptr<Job> req)
 	: Job (f, req)
-	, _decode_opt (od)
+	, _decode_opt (o)
 	, _bad (0)
 {
 
diff --git a/src/lib/check_hashes_job.h b/src/lib/check_hashes_job.h
index 7e62b0e7a..5fa17382d 100644
--- a/src/lib/check_hashes_job.h
+++ b/src/lib/check_hashes_job.h
@@ -18,15 +18,14 @@
 */
 
 #include "job.h"
-
-class DecodeOptions;
+#include "options.h"
 
 class CheckHashesJob : public Job
 {
 public:
 	CheckHashesJob (
 		boost::shared_ptr<Film> f,
-		boost::shared_ptr<const DecodeOptions> od,
+		DecodeOptions od,
 		boost::shared_ptr<Job> req
 		);
 
@@ -35,6 +34,6 @@ public:
 	std::string status () const;
 
 private:
-	boost::shared_ptr<const DecodeOptions> _decode_opt;
+	DecodeOptions _decode_opt;
 	int _bad;
 };
diff --git a/src/lib/decoder.cc b/src/lib/decoder.cc
index 7066b488e..fd0abee41 100644
--- a/src/lib/decoder.cc
+++ b/src/lib/decoder.cc
@@ -46,10 +46,10 @@ using boost::shared_ptr;
 using boost::optional;
 
 /** @param f Film.
- *  @param o Options.
+ *  @param o Decode options.
  *  @param j Job that we are running within, or 0
  */
-Decoder::Decoder (boost::shared_ptr<Film> f, boost::shared_ptr<const DecodeOptions> o, Job* j)
+Decoder::Decoder (boost::shared_ptr<Film> f, DecodeOptions o, Job* j)
 	: _film (f)
 	, _opt (o)
 	, _job (j)
diff --git a/src/lib/decoder.h b/src/lib/decoder.h
index 3908afa2f..cc4c87373 100644
--- a/src/lib/decoder.h
+++ b/src/lib/decoder.h
@@ -34,9 +34,9 @@
 #include "video_source.h"
 #include "audio_source.h"
 #include "film.h"
+#include "options.h"
 
 class Job;
-class DecodeOptions;
 class Image;
 class Log;
 class DelayLine;
@@ -54,7 +54,7 @@ class FilterGraph;
 class Decoder
 {
 public:
-	Decoder (boost::shared_ptr<Film>, boost::shared_ptr<const DecodeOptions>, Job *);
+	Decoder (boost::shared_ptr<Film>, DecodeOptions, Job *);
 	virtual ~Decoder () {}
 
 	virtual bool pass () = 0;
@@ -66,8 +66,8 @@ public:
 protected:
 	/** our Film */
 	boost::shared_ptr<Film> _film;
-	/** our options */
-	boost::shared_ptr<const DecodeOptions> _opt;
+	/** our decode options */
+	DecodeOptions _opt;
 	/** associated Job, or 0 */
 	Job* _job;
 
diff --git a/src/lib/decoder_factory.cc b/src/lib/decoder_factory.cc
index 2a0d828e2..c4d818f49 100644
--- a/src/lib/decoder_factory.cc
+++ b/src/lib/decoder_factory.cc
@@ -36,7 +36,7 @@ using boost::dynamic_pointer_cast;
 
 Decoders
 decoder_factory (
-	shared_ptr<Film> f, shared_ptr<const DecodeOptions> o, Job* j
+	shared_ptr<Film> f, DecodeOptions o, Job* j
 	)
 {
 	if (boost::filesystem::is_directory (f->content_path()) || f->content_type() == STILL) {
diff --git a/src/lib/decoder_factory.h b/src/lib/decoder_factory.h
index 47d977ce7..445a1c8a2 100644
--- a/src/lib/decoder_factory.h
+++ b/src/lib/decoder_factory.h
@@ -24,8 +24,9 @@
  *  @brief A method to create appropriate decoders for some content.
  */
 
+#include "options.h"
+
 class Film;
-class DecodeOptions;
 class Job;
 class VideoDecoder;
 class AudioDecoder;
@@ -43,7 +44,7 @@ struct Decoders {
 };
 
 extern Decoders decoder_factory (
-	boost::shared_ptr<Film>, boost::shared_ptr<const DecodeOptions>, Job *
+	boost::shared_ptr<Film>, DecodeOptions, Job *
 	);
 
 #endif
diff --git a/src/lib/examine_content_job.cc b/src/lib/examine_content_job.cc
index a783cde33..69a757e2b 100644
--- a/src/lib/examine_content_job.cc
+++ b/src/lib/examine_content_job.cc
@@ -78,8 +78,8 @@ ExamineContentJob::run ()
 		_film->unset_length ();
 		_film->set_crop (Crop ());
 		
-		shared_ptr<DecodeOptions> o (new DecodeOptions);
-		o->decode_audio = false;
+		DecodeOptions o;
+		o.decode_audio = false;
 		
 		Decoders decoders = decoder_factory (_film, o, this);
 		
@@ -96,8 +96,7 @@ ExamineContentJob::run ()
 
 		/* Get a quick decoder to get the content's length from its header */
 		
-		shared_ptr<DecodeOptions> o (new DecodeOptions);
-		Decoders d = decoder_factory (_film, o, 0);
+		Decoders d = decoder_factory (_film, DecodeOptions(), 0);
 		_film->set_length (d.video->length());
 	
 		_film->log()->log (String::compose ("Video length obtained from header as %1 frames", _film->length().get()));
diff --git a/src/lib/external_audio_decoder.cc b/src/lib/external_audio_decoder.cc
index 25c8068b6..366051418 100644
--- a/src/lib/external_audio_decoder.cc
+++ b/src/lib/external_audio_decoder.cc
@@ -31,7 +31,7 @@ using std::cout;
 using boost::shared_ptr;
 using boost::optional;
 
-ExternalAudioDecoder::ExternalAudioDecoder (shared_ptr<Film> f, shared_ptr<const DecodeOptions> o, Job* j)
+ExternalAudioDecoder::ExternalAudioDecoder (shared_ptr<Film> f, DecodeOptions o, Job* j)
 	: Decoder (f, o, j)
 	, AudioDecoder (f, o, j)
 {
diff --git a/src/lib/external_audio_decoder.h b/src/lib/external_audio_decoder.h
index 2558955eb..37e53bca7 100644
--- a/src/lib/external_audio_decoder.h
+++ b/src/lib/external_audio_decoder.h
@@ -44,7 +44,7 @@ private:
 class ExternalAudioDecoder : public AudioDecoder
 {
 public:
-	ExternalAudioDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const DecodeOptions>, Job *);
+	ExternalAudioDecoder (boost::shared_ptr<Film>, DecodeOptions, Job *);
 
 	bool pass ();
 
diff --git a/src/lib/ffmpeg_decoder.cc b/src/lib/ffmpeg_decoder.cc
index a19f26ad7..9e5cda889 100644
--- a/src/lib/ffmpeg_decoder.cc
+++ b/src/lib/ffmpeg_decoder.cc
@@ -59,7 +59,7 @@ using boost::shared_ptr;
 using boost::optional;
 using boost::dynamic_pointer_cast;
 
-FFmpegDecoder::FFmpegDecoder (shared_ptr<Film> f, shared_ptr<const DecodeOptions> o, Job* j)
+FFmpegDecoder::FFmpegDecoder (shared_ptr<Film> f, DecodeOptions o, Job* j)
 	: Decoder (f, o, j)
 	, VideoDecoder (f, o, j)
 	, AudioDecoder (f, o, j)
@@ -78,7 +78,7 @@ FFmpegDecoder::FFmpegDecoder (shared_ptr<Film> f, shared_ptr<const DecodeOptions
 	setup_audio ();
 	setup_subtitle ();
 
-	if (!o->video_sync) {
+	if (!o.video_sync) {
 		_first_video = 0;
 	}
 }
@@ -239,7 +239,7 @@ FFmpegDecoder::pass ()
 			filter_and_emit_video (_frame);
 		}
 
-		if (_audio_stream && _opt->decode_audio) {
+		if (_audio_stream && _opt.decode_audio) {
 			while (avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
 				int const data_size = av_samples_get_buffer_size (
 					0, _audio_codec_context->channels, _frame->nb_samples, audio_sample_format (), 1
@@ -267,14 +267,14 @@ FFmpegDecoder::pass ()
 				_film->log()->log (String::compose ("Used only %1 bytes of %2 in packet", r, _packet.size));
 			}
 
-			if (_opt->video_sync) {
+			if (_opt.video_sync) {
 				out_with_sync ();
 			} else {
 				filter_and_emit_video (_frame);
 			}
 		}
 
-	} else if (ffa && _packet.stream_index == ffa->id() && _opt->decode_audio) {
+	} else if (ffa && _packet.stream_index == ffa->id() && _opt.decode_audio) {
 
 		int frame_finished;
 		if (avcodec_decode_audio4 (_audio_codec_context, _frame, &frame_finished, &_packet) >= 0 && frame_finished) {
@@ -323,7 +323,7 @@ FFmpegDecoder::pass ()
 			}
 		}
 			
-	} else if (_subtitle_stream && _packet.stream_index == _subtitle_stream->id() && _opt->decode_subtitles && _first_video) {
+	} else if (_subtitle_stream && _packet.stream_index == _subtitle_stream->id() && _opt.decode_subtitles && _first_video) {
 
 		int got_subtitle;
 		AVSubtitle sub;
diff --git a/src/lib/ffmpeg_decoder.h b/src/lib/ffmpeg_decoder.h
index 2fb8675f9..51b88a24a 100644
--- a/src/lib/ffmpeg_decoder.h
+++ b/src/lib/ffmpeg_decoder.h
@@ -86,7 +86,7 @@ private:
 class FFmpegDecoder : public VideoDecoder, public AudioDecoder
 {
 public:
-	FFmpegDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const DecodeOptions>, Job *);
+	FFmpegDecoder (boost::shared_ptr<Film>, DecodeOptions, Job *);
 	~FFmpegDecoder ();
 
 	float frames_per_second () const;
diff --git a/src/lib/film.cc b/src/lib/film.cc
index 4bf6606a9..2934595ab 100644
--- a/src/lib/film.cc
+++ b/src/lib/film.cc
@@ -290,8 +290,8 @@ Film::make_dcp (bool transcode)
 		throw MissingSettingError ("name");
 	}
 
-	shared_ptr<DecodeOptions> od (new DecodeOptions);
-	od->decode_subtitles = with_subtitles ();
+	DecodeOptions od;
+	od.decode_subtitles = with_subtitles ();
 
 	shared_ptr<Job> r;
 
@@ -878,8 +878,7 @@ Film::set_content (string c)
 	*/
 
 	try {
-		shared_ptr<DecodeOptions> o (new DecodeOptions);
-		Decoders d = decoder_factory (shared_from_this(), o, 0);
+		Decoders d = decoder_factory (shared_from_this(), DecodeOptions(), 0);
 		
 		set_size (d.video->native_size ());
 		set_frames_per_second (d.video->frames_per_second ());
@@ -1121,8 +1120,7 @@ Film::set_external_audio (vector<string> a)
 		_external_audio = a;
 	}
 
-	shared_ptr<DecodeOptions> o (new DecodeOptions);
-	shared_ptr<ExternalAudioDecoder> decoder (new ExternalAudioDecoder (shared_from_this(), o, 0));
+	shared_ptr<ExternalAudioDecoder> decoder (new ExternalAudioDecoder (shared_from_this(), DecodeOptions(), 0));
 	if (decoder->audio_stream()) {
 		_external_audio_stream = decoder->audio_stream ();
 	}
diff --git a/src/lib/imagemagick_decoder.cc b/src/lib/imagemagick_decoder.cc
index bad1fb813..063730540 100644
--- a/src/lib/imagemagick_decoder.cc
+++ b/src/lib/imagemagick_decoder.cc
@@ -29,7 +29,7 @@ using std::cout;
 using boost::shared_ptr;
 
 ImageMagickDecoder::ImageMagickDecoder (
-	boost::shared_ptr<Film> f, boost::shared_ptr<const DecodeOptions> o, Job* j)
+	boost::shared_ptr<Film> f, DecodeOptions o, Job* j)
 	: Decoder (f, o, j)
 	, VideoDecoder (f, o, j)
 {
diff --git a/src/lib/imagemagick_decoder.h b/src/lib/imagemagick_decoder.h
index 6f426f308..5dfcab6f0 100644
--- a/src/lib/imagemagick_decoder.h
+++ b/src/lib/imagemagick_decoder.h
@@ -26,7 +26,7 @@ namespace Magick {
 class ImageMagickDecoder : public VideoDecoder
 {
 public:
-	ImageMagickDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const DecodeOptions>, Job *);
+	ImageMagickDecoder (boost::shared_ptr<Film>, DecodeOptions, Job *);
 
 	float frames_per_second () const {
 		/* We don't know */
diff --git a/src/lib/options.h b/src/lib/options.h
index 2f8733507..2cd7dffde 100644
--- a/src/lib/options.h
+++ b/src/lib/options.h
@@ -17,16 +17,13 @@
 
 */
 
+#ifndef DVDOMATIC_OPTIONS_H
+#define DVDOMATIC_OPTIONS_H
+
 /** @file src/options.h
- *  @brief Options for a transcoding operation.
+ *  @brief Options for a decoding operation.
  */
 
-#include <string>
-#include <iomanip>
-#include <sstream>
-#include <boost/optional.hpp>
-#include "util.h"
-
 class DecodeOptions
 {
 public:
@@ -40,3 +37,5 @@ public:
 	bool decode_subtitles;
 	bool video_sync;
 };
+
+#endif
diff --git a/src/lib/transcode_job.cc b/src/lib/transcode_job.cc
index db5c33641..23a3d9fe8 100644
--- a/src/lib/transcode_job.cc
+++ b/src/lib/transcode_job.cc
@@ -37,12 +37,12 @@ using std::setprecision;
 using boost::shared_ptr;
 
 /** @param s Film to use.
- *  @param o Options.
+ *  @param o Decode options.
  *  @param req Job that must be completed before this job is run.
  */
-TranscodeJob::TranscodeJob (shared_ptr<Film> f, shared_ptr<const DecodeOptions> od, shared_ptr<Job> req)
+TranscodeJob::TranscodeJob (shared_ptr<Film> f, DecodeOptions o, shared_ptr<Job> req)
 	: Job (f, req)
-	, _decode_opt (od)
+	, _decode_opt (o)
 {
 	
 }
diff --git a/src/lib/transcode_job.h b/src/lib/transcode_job.h
index aef190a64..8f78e7f6a 100644
--- a/src/lib/transcode_job.h
+++ b/src/lib/transcode_job.h
@@ -23,9 +23,9 @@
 
 #include <boost/shared_ptr.hpp>
 #include "job.h"
+#include "options.h"
 
 class Encoder;
-class DecodeOptions;
 
 /** @class TranscodeJob
  *  @brief A job which transcodes from one format to another.
@@ -33,7 +33,7 @@ class DecodeOptions;
 class TranscodeJob : public Job
 {
 public:
-	TranscodeJob (boost::shared_ptr<Film> f, boost::shared_ptr<const DecodeOptions> od, boost::shared_ptr<Job> req);
+	TranscodeJob (boost::shared_ptr<Film> f, DecodeOptions od, boost::shared_ptr<Job> req);
 	
 	std::string name () const;
 	void run ();
@@ -43,6 +43,6 @@ protected:
 	int remaining_time () const;
 
 private:
-	boost::shared_ptr<const DecodeOptions> _decode_opt;
+	DecodeOptions _decode_opt;
 	boost::shared_ptr<Encoder> _encoder;
 };
diff --git a/src/lib/transcoder.cc b/src/lib/transcoder.cc
index 87a1fb3f2..93963761e 100644
--- a/src/lib/transcoder.cc
+++ b/src/lib/transcoder.cc
@@ -48,7 +48,7 @@ using boost::dynamic_pointer_cast;
  *  @param j Job that we are running under, or 0.
  *  @param e Encoder to use.
  */
-Transcoder::Transcoder (shared_ptr<Film> f, shared_ptr<const DecodeOptions> o, Job* j, shared_ptr<Encoder> e)
+Transcoder::Transcoder (shared_ptr<Film> f, DecodeOptions o, Job* j, shared_ptr<Encoder> e)
 	: _job (j)
 	, _encoder (e)
 	, _decoders (decoder_factory (f, o, j))
diff --git a/src/lib/transcoder.h b/src/lib/transcoder.h
index ef6a438c8..786010869 100644
--- a/src/lib/transcoder.h
+++ b/src/lib/transcoder.h
@@ -36,7 +36,6 @@ class Gain;
 class VideoDecoder;
 class AudioDecoder;
 class DelayLine;
-class DecodeOptions;
 
 /** @class Transcoder
  *  @brief A class which takes a FilmState and some Options, then uses those to transcode a Film.
@@ -49,7 +48,7 @@ class Transcoder
 public:
 	Transcoder (
 		boost::shared_ptr<Film> f,
-		boost::shared_ptr<const DecodeOptions> o,
+		DecodeOptions o,
 		Job* j,
 		boost::shared_ptr<Encoder> e
 		);
diff --git a/src/lib/video_decoder.cc b/src/lib/video_decoder.cc
index e0a7576ee..3a803a863 100644
--- a/src/lib/video_decoder.cc
+++ b/src/lib/video_decoder.cc
@@ -28,7 +28,7 @@
 using boost::shared_ptr;
 using boost::optional;
 
-VideoDecoder::VideoDecoder (shared_ptr<Film> f, shared_ptr<const DecodeOptions> o, Job* j)
+VideoDecoder::VideoDecoder (shared_ptr<Film> f, DecodeOptions o, Job* j)
 	: Decoder (f, o, j)
 	, _video_frame (0)
 	, _last_source_time (0)
diff --git a/src/lib/video_decoder.h b/src/lib/video_decoder.h
index 7726d2057..c0eab2140 100644
--- a/src/lib/video_decoder.h
+++ b/src/lib/video_decoder.h
@@ -27,7 +27,7 @@
 class VideoDecoder : public VideoSource, public virtual Decoder
 {
 public:
-	VideoDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const DecodeOptions>, Job *);
+	VideoDecoder (boost::shared_ptr<Film>, DecodeOptions, Job *);
 
 	/** @return video frames per second, or 0 if unknown */
 	virtual float frames_per_second () const = 0;
diff --git a/src/wx/film_viewer.cc b/src/wx/film_viewer.cc
index 3d8198457..347531cc2 100644
--- a/src/wx/film_viewer.cc
+++ b/src/wx/film_viewer.cc
@@ -98,10 +98,10 @@ FilmViewer::film_changed (Film::Property p)
 		break;
 	case Film::CONTENT:
 	{
-		shared_ptr<DecodeOptions> o (new DecodeOptions);
-		o->decode_audio = false;
-		o->decode_subtitles = true;
-		o->video_sync = false;
+		DecodeOptions o;
+		o.decode_audio = false;
+		o.decode_subtitles = true;
+		o.video_sync = false;
 		_decoders = decoder_factory (_film, o, 0);
 		_decoders.video->Video.connect (bind (&FilmViewer::process_video, this, _1, _2, _3));
 		_decoders.video->OutputChanged.connect (boost::bind (&FilmViewer::decoder_changed, this));