Add a "getLength" function to SeekableAudioStream.

svn-id: r47036

5 files changed, 23 insertions, 0 deletions

diff --git a/sound/audiostream.cpp b/sound/audiostream.cpp
index 9453eb24da..4ecfbedada 100644
--- a/sound/audiostream.cpp
+++ b/sound/audiostream.cpp
@@ -175,6 +175,8 @@ public:
 	}
 
 	bool seek(const Timestamp &where);
+	// TODO: We can definitly increase the precision here, since we know the exact sample count
+	Timestamp getLength() const { return Timestamp(_playtime, getRate()); }
 
 	void setNumLoops(uint numLoops) {
 		_numLoops = numLoops;
@@ -334,6 +336,8 @@ public:
 			return kUnknownPlayTime;
 		return _playtime * _numLoops;
 	}
+	// TODO: We can definitly increase the precision here, since we know the exact sample count
+	Timestamp getLength() const { return Timestamp(_playtime, getRate()); }
 
 	bool seek(const Timestamp &where);
 };
diff --git a/sound/audiostream.h b/sound/audiostream.h
index 15e7ea6d33..a3992ca94f 100644
--- a/sound/audiostream.h
+++ b/sound/audiostream.h
@@ -157,6 +157,13 @@ public:
 	 * @return true on success, false on failure.
 	 */
 	virtual bool seek(const Timestamp &where) = 0;
+
+	/**
+	 * Returns the length of the stream.
+	 *
+	 * @return length as Timestamp.
+	 */
+	virtual Timestamp getLength() const = 0;
 };
 
 
diff --git a/sound/flac.cpp b/sound/flac.cpp
index ddfd9bf329..b99f8bb484 100644
--- a/sound/flac.cpp
+++ b/sound/flac.cpp
@@ -150,6 +150,8 @@ public:
 	}
 
 	bool seek(const Timestamp &where);
+	// TODO: We can definitly increase the precision here, since FLAC allows us to catch the sample count
+	Timestamp getLength() const { return Timestamp(_totalPlayTime, getRate()); }
 
 	bool isStreamDecoderReady() const { return getStreamDecoderState() == FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC ; }
 
diff --git a/sound/mp3.cpp b/sound/mp3.cpp
index 72d4652789..332fe20d59 100644
--- a/sound/mp3.cpp
+++ b/sound/mp3.cpp
@@ -100,6 +100,8 @@ public:
 	}
 
 	bool seek(const Timestamp &where);
+	// TODO: Maybe we can have a more precise implementation of this
+	Timestamp getLength() const { return Timestamp(_totalPlayTime, getRate()); }
 
 	void setNumLoops(uint numLoops) {
 		_numLoops = numLoops;
diff --git a/sound/vorbis.cpp b/sound/vorbis.cpp
index eced67726a..a130ecc5ec 100644
--- a/sound/vorbis.cpp
+++ b/sound/vorbis.cpp
@@ -139,6 +139,14 @@ public:
 	}
 
 	bool seek(const Timestamp &where);
+	// TODO: Maybe we can have a more precise implementation of this
+	Timestamp getLength() const {
+#ifdef USE_TREMOR
+		return Timestamp(_endTime, getRate());
+#else
+		return Timestamp((uint32)(_endTime * 1000.0), getRate());
+#endif
+	}
 
 protected:
 	bool refill();