Diff: DuerOS-Light-SDK-v1.1.0/duer-os-light/external/mp3dec/pub/mp3common.h

Revision:

47:9e361da97763

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DuerOS-Light-SDK-v1.1.0/duer-os-light/external/mp3dec/pub/mp3common.h	Tue Jul 18 16:54:45 2017 +0800
@@ -0,0 +1,123 @@
+/* ***** BEGIN LICENSE BLOCK ***** 
+ * Version: RCSL 1.0/RPSL 1.0 
+ *  
+ * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
+ *      
+ * The contents of this file, and the files included with this file, are 
+ * subject to the current version of the RealNetworks Public Source License 
+ * Version 1.0 (the "RPSL") available at 
+ * http://www.helixcommunity.org/content/rpsl unless you have licensed 
+ * the file under the RealNetworks Community Source License Version 1.0 
+ * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
+ * in which case the RCSL will apply. You may also obtain the license terms 
+ * directly from RealNetworks.  You may not use this file except in 
+ * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
+ * applicable to this file, the RCSL.  Please see the applicable RPSL or 
+ * RCSL for the rights, obligations and limitations governing use of the 
+ * contents of the file.  
+ *  
+ * This file is part of the Helix DNA Technology. RealNetworks is the 
+ * developer of the Original Code and owns the copyrights in the portions 
+ * it created. 
+ *  
+ * This file, and the files included with this file, is distributed and made 
+ * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
+ * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
+ * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
+ * 
+ * Technology Compatibility Kit Test Suite(s) Location: 
+ *    http://www.helixcommunity.org/content/tck 
+ * 
+ * Contributor(s): 
+ *  
+ * ***** END LICENSE BLOCK ***** */ 
+
+/**************************************************************************************
+ * Fixed-point MP3 decoder
+ * Jon Recker (jrecker@real.com), Ken Cooke (kenc@real.com)
+ * June 2003
+ *
+ * mp3common.h - implementation-independent API's, datatypes, and definitions
+ **************************************************************************************/
+
+#ifndef _MP3COMMON_H
+#define _MP3COMMON_H
+
+#include "mp3dec.h"
+#include "statname.h"	/* do name-mangling for static linking */
+
+#define MAX_SCFBD		4		/* max scalefactor bands per channel */
+#define NGRANS_MPEG1	2
+#define NGRANS_MPEG2	1
+
+/* 11-bit syncword if MPEG 2.5 extensions are enabled */
+#define	SYNCWORDH		0xff
+#define	SYNCWORDL		0xe0
+
+/* 12-bit syncword if MPEG 1,2 only are supported 
+ * #define	SYNCWORDH		0xff
+ * #define	SYNCWORDL		0xf0
+ */
+
+typedef struct _MP3DecInfo {
+	/* pointers to platform-specific data structures */
+	void *FrameHeaderPS;
+	void *SideInfoPS;
+	void *ScaleFactorInfoPS;
+	void *HuffmanInfoPS;
+	void *DequantInfoPS;
+	void *IMDCTInfoPS;
+	void *SubbandInfoPS;
+
+	/* buffer which must be large enough to hold largest possible main_data section */
+	unsigned char mainBuf[MAINBUF_SIZE];
+
+	/* special info for "free" bitrate files */
+	int freeBitrateFlag;
+	int freeBitrateSlots;
+
+	/* user-accessible info */
+	int bitrate;
+	int nChans;
+	int samprate;
+	int nGrans;				/* granules per frame */
+	int nGranSamps;			/* samples per granule */
+	int nSlots;
+	int layer;
+	MPEGVersion version;
+
+	int mainDataBegin;
+	int mainDataBytes;
+
+	int part23Length[MAX_NGRAN][MAX_NCHAN];
+
+} MP3DecInfo;
+
+typedef struct _SFBandTable {
+	short l[23];
+	short s[14];
+} SFBandTable;
+
+/* decoder functions which must be implemented for each platform */
+MP3DecInfo *AllocateBuffers(void);
+void FreeBuffers(MP3DecInfo *mp3DecInfo);
+int CheckPadBit(MP3DecInfo *mp3DecInfo);
+int UnpackFrameHeader(MP3DecInfo *mp3DecInfo, unsigned char *buf);
+int UnpackSideInfo(MP3DecInfo *mp3DecInfo, unsigned char *buf);
+int DecodeHuffman(MP3DecInfo *mp3DecInfo, unsigned char *buf, int *bitOffset, int huffBlockBits, int gr, int ch);
+int Dequantize(MP3DecInfo *mp3DecInfo, int gr);
+int IMDCT(MP3DecInfo *mp3DecInfo, int gr, int ch);
+int UnpackScaleFactors(MP3DecInfo *mp3DecInfo, unsigned char *buf, int *bitOffset, int bitsAvail, int gr, int ch);
+int Subband(MP3DecInfo *mp3DecInfo, short *pcmBuf);
+
+/* mp3tabs.c - global ROM tables */
+extern const int samplerateTab[3][3];
+extern const short bitrateTab[3][3][15];
+extern const short samplesPerFrameTab[3][3];
+extern const short bitsPerSlotTab[3];
+extern const short sideBytesTab[3][2];
+extern const short slotTab[3][3][15];
+extern const SFBandTable sfBandTable[3][3];
+
+#endif	/* _MP3COMMON_H */