First checkin

git-svn-id: https://oreka.svn.sourceforge.net/svnroot/oreka/trunk@2 09dcff7a-b715-0410-9601-b79a96267cd0

1 files changed, 109 insertions, 0 deletions

diff --git a/orkbasecxx/AudioCapture.h b/orkbasecxx/AudioCapture.h
new file mode 100644
index 0000000..cb5a234
--- /dev/null
+++ b/orkbasecxx/AudioCapture.h
@@ -0,0 +1,109 @@
+/*
+ * Oreka -- A media capture and retrieval platform
+ * 
+ * Copyright (C) 2005, orecx LLC
+ *
+ * http://www.orecx.com
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License.
+ * Please refer to http://www.gnu.org/copyleft/gpl.html
+ *
+ */
+
+#ifndef __AUDIOCAPTURE_H__
+#define __AUDIOCAPTURE_H__
+
+#include "time.h"
+#include "StdString.h"
+#include "OrkBase.h"
+
+#include "boost/shared_ptr.hpp"
+
+/** This class represents a piece of audio. 
+*/
+class DLL_IMPORT_EXPORT AudioChunk
+{
+public: 
+	typedef enum
+	{
+		UnknownAudio = 0,
+		PcmAudio = 1,
+		AlawAudio = 2,
+		UlawAudio = 3,
+		InvalidAudio = 4
+	} AudioEncodingEnum;
+
+	AudioChunk();
+	~AudioChunk();
+
+	/** Copy external buffer to internal buffer. Create internal buffer if necessary */
+	void SetBuffer(void* pBuffer, size_t numBytes, AudioEncodingEnum, unsigned int timestamp = 0, unsigned int sequenceNumber = 0);
+
+	/** Computes the Root-Mean-Square power value of the buffer */
+	double ComputeRms();
+	/** Compute the RMS decibel value of the buffer with a 0 dB reference being the maximum theoretical RMS power of the buffer (2^15) */
+	double ComputeRmsDb();
+
+	int GetNumSamples();
+	double GetDurationSec();
+
+	AudioEncodingEnum m_encoding;
+	unsigned int m_numBytes;
+	void * m_pBuffer;
+	unsigned int m_timestamp;			// usually: relative timestamp measured in samples
+	unsigned int m_sequenceNumber;
+	unsigned int m_sampleRate;
+};
+
+typedef boost::shared_ptr<AudioChunk> AudioChunkRef;
+
+class DLL_IMPORT_EXPORT CaptureEvent
+{
+public:
+	CaptureEvent();
+
+#define DIR_IN "in"
+#define DIR_OUT "out"
+#define DIR_UNKN "unkn"
+	typedef enum {	
+		DirIn = 0, 
+		DirOut = 1, 
+		DirUnkn = 2
+	} DirectionEnum;
+	static CStdString DirectionToString(int);
+	static int DirectionToEnum(CStdString& dir);
+
+#define ET_UNKNOWN "unknown"
+#define ET_START "start"
+#define ET_STOP "stop"
+#define ET_DIRECTION "direction"
+#define ET_REMOTEPARTY "remoteparty"
+#define ET_LOCALPARTY "localparty"
+#define ET_LOCALENTRYPOINT "localentrypoint"
+#define ET_KEYVALUE "keyvalue"
+#define ET_INVALID "invalid"
+	typedef enum
+	{
+		EtUnknown = 0,
+		EtStart = 1,
+		EtStop = 2,
+		EtDirection = 3,
+		EtRemoteParty = 4,
+		EtLocalParty = 5,
+		EtLocalEntryPoint = 6,
+		EtKeyValue = 7,
+		EtInvalid = 8
+	} EventTypeEnum;
+	static CStdString EventTypeToString(int eventTypeEnum);
+	static int EventTypeToEnum(CStdString&);
+	
+	time_t m_timestamp;
+	EventTypeEnum m_type;
+	CStdString m_key;
+	CStdString m_value;
+};
+
+typedef boost::shared_ptr<CaptureEvent> CaptureEventRef;
+#endif
+