Changed: Also return song length with title

--HG--
branch : develop

code/nel/include/nel/sound/audio_decoder.h

@@ -67,7 +67,7 @@ public:
 	static IAudioDecoder *createAudioDecoder(const std::string &type, NLMISC::IStream *stream, bool loop);
 
 	/// Get information on a music file (only artist and title at the moment).
-	static bool getInfo(const std::string &filepath, std::string &artist, std::string &title);
+	static bool getInfo(const std::string &filepath, std::string &artist, std::string &title, float &length);
 	
 	/// Get audio/container extensions that are currently supported by the nel sound library.
 	static void getMusicExtensions(std::vector<std::string> &extensions);

code/nel/include/nel/sound/audio_decoder_vorbis.h

@@ -77,7 +77,7 @@ public:
 	inline sint32 getStreamOffset() { return _StreamOffset; }
 
 	/// Get information on a music file (only artist and title at the moment).
-	static bool getInfo(NLMISC::IStream *stream, std::string &artist, std::string &title);
+	static bool getInfo(NLMISC::IStream *stream, std::string &artist, std::string &title, float &length);
 
 	/// Get how many bytes the music buffer requires for output minimum.
 	virtual uint32 getRequiredBytes();

code/nel/include/nel/sound/audio_mixer_user.h

@@ -332,7 +332,7 @@ public:
 	virtual bool	isMusicEnded();
 	virtual void	setMusicVolume(float gain);
 	virtual float	getMusicLength();
-	virtual bool	getSongTitle(const std::string &filename, std::string &result);
+	virtual bool	getSongTitle(const std::string &filename, std::string &result, float &length);
 	virtual void	enableBackgroundMusic(bool enable);
 	virtual void	enableBackgroundMusicTimeConstraint(bool enable);
 	CMusicSoundManager *getBackgroundMusicManager() const {return _BackgroundMusicManager;}

code/nel/include/nel/sound/u_audio_mixer.h

@@ -432,7 +432,7 @@ public:
 	/** Get the song title. Returns false if the song is not found or the function is not implemented.
 	 * If the song as no name, result is filled with the filename.
 	 */
-	virtual bool	getSongTitle(const std::string &filename, std::string &result) =0;
+	virtual bool	getSongTitle(const std::string &filename, std::string &result, float &length) =0;
 	/** enable or disable the background music system. disable it when you want to play your own mp3 for instance
 	 */
 	virtual void	enableBackgroundMusic(bool enable) =0;

code/nel/src/sound/audio_decoder.cpp

@@ -94,7 +94,7 @@ IAudioDecoder *IAudioDecoder::createAudioDecoder(const std::string &type, NLMISC
 	}
 }
 
-bool IAudioDecoder::getInfo(const std::string &filepath, std::string &artist, std::string &title)
+bool IAudioDecoder::getInfo(const std::string &filepath, std::string &artist, std::string &title, float &length)
 {
 	std::string lookup = CPath::lookup(filepath, false);
 	if (lookup.empty())
@@ -111,7 +111,7 @@ bool IAudioDecoder::getInfo(const std::string &filepath, std::string &artist, st
 		ifile.setCacheFileOnOpen(false); 
 		ifile.allowBNPCacheFileOnOpen(false);
 		if (ifile.open(lookup))
-			return CAudioDecoderVorbis::getInfo(&ifile, artist, title);
+			return CAudioDecoderVorbis::getInfo(&ifile, artist, title, length);
 
 		nlwarning("Unable to open: '%s'", filepath.c_str());
 	}

code/nel/src/sound/audio_decoder_vorbis.cpp

@@ -117,7 +117,7 @@ CAudioDecoderVorbis::~CAudioDecoderVorbis()
 }
 
 /// Get information on a music file (only artist and title at the moment).
-bool CAudioDecoderVorbis::getInfo(NLMISC::IStream *stream, std::string &artist, std::string &title)
+bool CAudioDecoderVorbis::getInfo(NLMISC::IStream *stream, std::string &artist, std::string &title, float &length)
 {
 	CAudioDecoderVorbis mbv(stream, false); // just opens and closes the oggvorbisfile thing :)
 	vorbis_comment *vc = ov_comment(&mbv._OggVorbisFile, -1);
@@ -125,6 +125,7 @@ bool CAudioDecoderVorbis::getInfo(NLMISC::IStream *stream, std::string &artist,
 	if (title_c) title = title_c; else title.clear();
 	char *artist_c = vorbis_comment_query(vc, "artist", 0);
 	if (artist_c) artist = artist_c; else artist.clear();
+	length = (float)ov_time_total(&mbv._OggVorbisFile, -1);
 	return true;
 }
 

code/nel/src/sound/audio_mixer_user.cpp

@@ -2684,7 +2684,7 @@ float	CAudioMixerUser::getMusicLength()
 }
 
 // ***************************************************************************
-bool	CAudioMixerUser::getSongTitle(const std::string &filename, std::string &result)
+bool	CAudioMixerUser::getSongTitle(const std::string &filename, std::string &result, float &length)
 {
 	if (_SoundDriver)
 	{
@@ -2694,7 +2694,7 @@ bool	CAudioMixerUser::getSongTitle(const std::string &filename, std::string &res
 		if (!_SoundDriver->getMusicInfo(filename, artist, title))
 		{
 			// use 3rd party libraries supported formats
-			IAudioDecoder::getInfo(filename, artist, title);
+			IAudioDecoder::getInfo(filename, artist, title, length);
 		}
 
 		if (!title.empty())
@@ -2715,6 +2715,7 @@ bool	CAudioMixerUser::getSongTitle(const std::string &filename, std::string &res
 	}
 
 	result = "???";
+	length = 0;
 	return false;
 }