*/
/** @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 "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 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.
+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 ensure that, at worst,
+ * the next thing we yield comes before `time'. This may entail
+ * seeking some way before `time' to be on the safe side.
+ * Alternatively, if seeking is 100% accurate for this decoder,
+ * it may seek to just the right spot.
*/
- virtual void pass () = 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