*/
/** @file src/decoder.h
- * @brief Parent class for decoders of content.
+ * @brief Decoder class.
*/
#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 "video_source.h"
-#include "audio_source.h"
-#include "film.h"
+#include <boost/weak_ptr.hpp>
+#include <boost/utility.hpp>
+#include "types.h"
+#include "dcpomatic_time.h"
-class Image;
-class Log;
-class DelayLine;
-class TimedSubtitle;
-class Subtitle;
-class FilterGraph;
+class Decoded;
+class Film;
/** @class Decoder.
* @brief Parent class for decoders of content.
*/
-class Decoder
+class Decoder : public boost::noncopyable
{
public:
- 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.
- */
- virtual void pass () = 0;
-
- /** Seek this decoder to as close as possible to some time,
- * expressed relative to our source's start.
- * @param t Time.
- * @param a true to try hard to be accurate, otherwise false.
- */
- virtual void seek (Time) = 0;
-
- /** Seek back one video frame */
- virtual void seek_back () = 0;
-
- /** Seek forward one video frame */
- virtual void seek_forward () = 0;
-
- /** @return Approximate time of the next content that we will emit,
- * expressed relative to the start of our source.
+protected:
+ /** Seek so that the next pass() will yield the next thing
+ * (video/sound frame, subtitle etc.) at or after the requested
+ * time. Pass accurate = true to try harder to get close to
+ * the request. Note that seeking to time t may mean that
+ * the next pass() yields, for example, audio at time t and then
+ * video before it.
*/
- virtual Time next () const = 0;
-
- virtual bool done () const = 0;
-
-protected:
-
- /** The Film that we are decoding in */
- boost::weak_ptr<const Film> _film;
-
-private:
- /** This will be called when our Film emits Changed */
- virtual void film_changed (Film::Property) {}
-
- /** Connection to our Film */
- boost::signals2::scoped_connection _film_connection;
+ virtual void seek (ContentTime time, bool accurate) = 0;
+ virtual bool pass () = 0;
};
#endif