#include "stream.h"
#include "video_source.h"
#include "audio_source.h"
+#include "film.h"
+#include "options.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.
+ * 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 : public VideoSource, public AudioSource
+class Decoder
{
public:
- Decoder (boost::shared_ptr<Film>, boost::shared_ptr<const Options>, Job *);
+ Decoder (boost::shared_ptr<Film>, DecodeOptions);
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;
-
- 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;
-
virtual bool pass () = 0;
- void go ();
-
- SourceFrame video_frame () const {
- return _video_frame;
- }
-
- virtual void set_audio_stream (boost::optional<AudioStream>);
- virtual void set_subtitle_stream (boost::optional<SubtitleStream>);
+ virtual bool seek (double);
+ virtual bool seek_to_last ();
- boost::optional<AudioStream> audio_stream () const {
- return _audio_stream;
- }
-
- boost::optional<SubtitleStream> subtitle_stream () const {
- return _subtitle_stream;
- }
-
- std::vector<AudioStream> audio_streams () const {
- return _audio_streams;
- }
-
- std::vector<SubtitleStream> subtitle_streams () const {
- return _subtitle_streams;
- }
+ boost::signals2::signal<void()> OutputChanged;
protected:
-
- virtual PixelFormat pixel_format () const = 0;
-
- void process_video (AVFrame *);
- void process_audio (boost::shared_ptr<AudioBuffers>);
- void process_subtitle (boost::shared_ptr<TimedSubtitle>);
- void repeat_last_video ();
-
/** our Film */
boost::shared_ptr<Film> _film;
- /** our options */
- boost::shared_ptr<const Options> _opt;
- /** associated Job, or 0 */
- Job* _job;
-
- boost::optional<AudioStream> _audio_stream;
- boost::optional<SubtitleStream> _subtitle_stream;
+ /** our decode options */
+ DecodeOptions _opt;
- std::vector<AudioStream> _audio_streams;
- std::vector<SubtitleStream> _subtitle_streams;
-
private:
- void emit_video (boost::shared_ptr<Image>, boost::shared_ptr<Subtitle>);
-
- SourceFrame _video_frame;
-
- std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
-
- boost::shared_ptr<TimedSubtitle> _timed_subtitle;
-
- boost::shared_ptr<Image> _last_image;
- boost::shared_ptr<Subtitle> _last_subtitle;
+ virtual void film_changed (Film::Property) {}
+
+ boost::signals2::scoped_connection _film_connection;
};
#endif