diff options
Diffstat (limited to 'player.h')
| -rw-r--r-- | player.h | 23 |
1 files changed, 22 insertions, 1 deletions
@@ -4,7 +4,7 @@ * See the main source file 'vdr.c' for copyright information and * how to reach the author. * - * $Id: player.h 1.8 2002/08/16 09:14:12 kls Exp $ + * $Id: player.h 1.9 2002/10/12 11:17:02 kls Exp $ */ #ifndef __PLAYER_H @@ -50,6 +50,27 @@ public: // we are going forward or backward and 'Speed' is -1 if this is normal // play/pause mode, 0 if it is single speed fast/slow forward/back mode // and >0 if this is multi speed mode. + virtual int NumAudioTracks(void) const { return 0; } + // Returns the number of audio tracks that are currently available on this + // player. The default return value is 0, meaning that this player + // doesn't have multiple audio track capabilities. The return value may + // change with every call and need not necessarily be the number of list + // entries returned by GetAudioTracks(). This function is mainly called to + // decide whether there should be an "Audio" button in a menu. + virtual const char **GetAudioTracks(int *CurrentTrack = NULL) const { return NULL; } + // Returns a list of currently available audio tracks. The last entry in the + // list must be NULL. The number of entries does not necessarily have to be + // the same as returned by a previous call to NumAudioTracks(). + // If CurrentTrack is given, it will be set to the index of the current track + // in the returned list. Note that the list must not be changed after it has + // been returned by a call to GetAudioTracks()! The only time the list may + // change is *inside* the GetAudioTracks() function. + // By default the return value is NULL and CurrentTrack, if given, will not + // have any meaning. + virtual void SetAudioTrack(int Index) {} + // Sets the current audio track to the given value, which should be within the + // range of the list returned by a previous call to GetAudioTracks() + // (otherwise nothing will happen). }; class cControl : public cOsdObject { |