1 files changed, 85 insertions, 0 deletions
diff --git a/audio.h b/audio.h
new file mode 100644
index 0000000..a4ade81
--- /dev/null
+++ b/audio.h
@@ -0,0 +1,85 @@
+/*
+ * See the README file for copyright information and how to reach the author.
+ *
+ * $Id$
+ */
+
+#ifndef AUDIO_H
+#define AUDIO_H
+
+extern "C"
+{
+#include <libavcodec/avcodec.h>
+}
+
+class cMutex;
+
+class cAudioDecoder
+{
+
+public:
+
+	enum eCodec {
+		ePCM,
+		eMPG,
+		eAC3,
+		eEAC3,
+		eAAC,
+		eDTS,
+		eNumCodecs
+	};
+
+	enum ePort {
+		eLocal,
+		eHDMI
+	};
+
+	static const char* CodecStr(eCodec codec)
+	{
+		return  (codec == ePCM)  ? "PCM"   :
+				(codec == eMPG)  ? "MPG"   :
+				(codec == eAC3)  ? "AC3"   :
+				(codec == eEAC3) ? "E-AC3" :
+				(codec == eAAC)  ? "AAC"   :
+				(codec == eDTS)  ? "DTS"   : "unknown";
+	}
+
+    cAudioDecoder();
+	virtual ~cAudioDecoder();
+
+	virtual int Init(void);
+	virtual int DeInit(void);
+
+	virtual bool SetupAudioCodec(const unsigned char *data, int length);
+
+	virtual eCodec GetCodec(void) { return m_codec; }
+	virtual eCodec GetOutputFormat(void) { return m_outputFormat; }
+	virtual ePort GetOutputPort(void) { return m_outputPort; }
+	virtual int GetChannels(void) { return m_channels; }
+	virtual int GetSamplingrate(void) { return m_samplingRate; }
+
+	virtual unsigned int DecodeAudio(const unsigned char *data, int length,
+			unsigned char *outbuf, int bufsize);
+
+private:
+
+	struct Codec
+	{
+		AVCodec 		*codec;
+	    AVCodecContext 	*context;
+	};
+
+	Codec	 m_codecs[eNumCodecs];
+	eCodec	 m_codec;
+	eCodec	 m_outputFormat;
+	ePort	 m_outputPort;
+	int		 m_channels;
+	int		 m_samplingRate;
+
+	bool	 m_passthrough;
+
+    AVFrame *m_frame;
+    cMutex	*m_mutex;
+};
+
+#endif