More noncopyable.

[dcpomatic.git] / src / lib / decoder.h

diff --git a/src/lib/decoder.h b/src/lib/decoder.h
index 31cf9d97d42e94c400f4e5c1df07da5dbbf91c7b..6cce9e68d6939b0506900a6a1f888ff7b9481240 100644 (file)
--- a/src/lib/decoder.h
+++ b/src/lib/decoder.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -21,132 +21,48 @@
  *  @brief Parent class for decoders of content.
  */
 
-#ifndef DVDOMATIC_DECODER_H
-#define DVDOMATIC_DECODER_H
+#ifndef DCPOMATIC_DECODER_H
+#define DCPOMATIC_DECODER_H
 
 #include <vector>
 #include <string>
 #include <stdint.h>
 #include <boost/shared_ptr.hpp>
 #include <boost/signals2.hpp>
-#include "util.h"
-#include "stream.h"
+#include "film.h"
 
-class Job;
-class Options;
 class Image;
 class Log;
 class DelayLine;
-class TimedSubtitle;
-class Subtitle;
-class Film;
 class FilterGraph;
 
 /** @class Decoder.
  *  @brief Parent class for decoders of content.
- *
- *  These classes can be instructed run through their content
- *  (by calling ::go), and they emit signals when video or audio data is ready for something else
- *  to process.
  */
-class Decoder
+class Decoder : public boost::noncopyable
 {
 public:
-       Decoder (boost::shared_ptr<Film>, boost::shared_ptr<const Options>, Job *, bool, bool);
-       virtual ~Decoder ();
-
-       /* Methods to query our input video */
-
-       /** @return video frames per second, or 0 if unknown */
-       virtual float frames_per_second () const = 0;
-       /** @return native size in pixels */
-       virtual Size native_size () const = 0;
-       /** @return number of audio channels */
-       virtual int audio_channels () const = 0;
-       /** @return audio sampling rate in Hz */
-       virtual int audio_sample_rate () const = 0;
-       /** @return format of audio samples */
-       virtual AVSampleFormat audio_sample_format () const = 0;
-       virtual int64_t audio_channel_layout () const = 0;
-       virtual bool has_subtitles () const = 0;
-
-       virtual int time_base_numerator () const = 0;
-       virtual int time_base_denominator () const = 0;
-       virtual int sample_aspect_ratio_numerator () const = 0;
-       virtual int sample_aspect_ratio_denominator () const = 0;
-       
-       void process_begin ();
-       bool pass ();
-       void process_end ();
-       void go ();
-
-       /** @return the index of the last video frame to be processed */
-       int video_frame () const {
-               return _video_frame;
-       }
-
-       virtual std::vector<AudioStream> audio_streams () const {
-               return std::vector<AudioStream> ();
-       }
-       
-       virtual std::vector<SubtitleStream> subtitle_streams () const {
-               return std::vector<SubtitleStream> ();
-       }
-
-       /** Emitted when a video frame is ready.
-        *  First parameter is the frame.
-        *  Second parameter is its index within the content.
-        *  Third parameter is either 0 or a subtitle that should be on this frame.
+       Decoder (boost::shared_ptr<const Film>);
+       virtual ~Decoder () {}
+
+       /** Perform one decode pass of the content, which may or may not
+        *  cause the object to emit some data.
         */
-       boost::signals2::signal<void (boost::shared_ptr<Image>, int, boost::shared_ptr<Subtitle>)> Video;
+       virtual void pass () = 0;
 
-       /** Emitted when some audio data is ready */
-       boost::signals2::signal<void (boost::shared_ptr<AudioBuffers>)> Audio;
+       virtual bool done () const = 0;
 
 protected:
-       
-       /** perform a single pass at our content */
-       virtual bool do_pass () = 0;
-       virtual PixelFormat pixel_format () const = 0;
-       
-       void process_video (AVFrame *);
-       void process_audio (uint8_t *, int);
-       void process_subtitle (boost::shared_ptr<TimedSubtitle>);
-
-       int bytes_per_audio_sample () const;
-       
-       /** our Film */
-       boost::shared_ptr<Film> _film;
-       /** our options */
-       boost::shared_ptr<const Options> _opt;
-       /** associated Job, or 0 */
-       Job* _job;
-
-       /** true to do the bare minimum of work; just run through the content.  Useful for acquiring
-        *  accurate frame counts as quickly as possible.  This generates no video or audio output.
-        */
-       bool _minimal;
 
-       /** ignore_length Ignore the content's claimed length when computing progress */
-       bool _ignore_length;
+       /** The Film that we are decoding in */
+       boost::weak_ptr<const Film> _film;
 
 private:
-       void emit_audio (uint8_t* data, int size);
-       
-       /** last video frame to be processed */
-       int _video_frame;
-
-       std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
-
-       DelayLine* _delay_line;
-       int _delay_in_bytes;
-
-       /* Number of audio frames that we have pushed to the encoder
-          (at the DCP sample rate).
-       */
-       int64_t _audio_frames_processed;
+       /** This will be called when our Film emits Changed */
+       virtual void film_changed (Film::Property) {}
 
-       boost::shared_ptr<TimedSubtitle> _timed_subtitle;
+       /** Connection to our Film */
+       boost::signals2::scoped_connection _film_connection;
 };
 
 #endif