SOUND: Add EmptyAudioStream

xoreos · Aug 18, 2018 · 2aa5655 · 2aa5655
1 parent f784ac9
commit 2aa5655
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Showing 2 changed files with 18 additions and 1 deletion.
diff --git a/src/sound/audiostream.cpp b/src/sound/audiostream.cpp
@@ -64,7 +64,7 @@ LoopingAudioStream::~LoopingAudioStream() {
 }
 
 size_t LoopingAudioStream::readBuffer(int16 *buffer, const size_t numSamples) {
-	if ((_loops && _completeIterations == _loops) || !numSamples)
+	if ((_loops && _completeIterations == _loops) || !numSamples || (_parent->getLength() == 0))
 		return 0;
 
 	const size_t samplesRead = _parent->readBuffer(buffer, numSamples);

diff --git a/src/sound/audiostream.h b/src/sound/audiostream.h
@@ -151,6 +151,23 @@ class RewindableAudioStream : public AudioStream {
 	}
 };
 
+/** An empty audio stream that plays nothing. */
+class EmptyAudioStream : public RewindableAudioStream {
+public:
+	EmptyAudioStream() { }
+
+	size_t readBuffer(int16 *UNUSED(buffer), const size_t UNUSED(numSamples)) { return 0; }
+
+	int getChannels() const { return 1; }
+
+	int getRate() const { return 44100; }
+
+	bool endOfData() const { return true; }
+	bool rewind() { return true; }
+
+	uint64 getLength() const { return 0; }
+};
+
 /**
  * A looping audio stream. This object does nothing besides using
  * a RewindableAudioStream to play a stream in a loop.