/*
?*
?*??Bluetooth?low-complexity?subband?codec?（SBC）?library
?*
?*??Copyright?（C）?2004-2007??Marcel?Holtmann?
?*??Copyright?（C）?2004-2005??Henryk?Ploetz?
?*??Copyright?（C）?2005-2006??Brad?Midgley?
?*
?*
?*??This?library?is?free?software;?you?can?redistribute?it?and/or
?*??modify?it?under?the?terms?of?the?GNU?Lesser?General?Public
?*??License?as?published?by?the?Free?Software?Foundation;?either
?*??version?2.1?of?the?License?or?（at?your?option）?any?later?version.
?*
?*??This?library?is?distributed?in?the?hope?that?it?will?be?useful
?*??but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
?*??MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the?GNU
?*??Lesser?General?Public?License?for?more?details.
?*
?*??You?should?have?received?a?copy?of?the?GNU?Lesser?General?Public
?*??License?along?with?this?library;?if?not?write?to?the?Free?Software
?*??Foundation?Inc.?51?Franklin?St?Fifth?Floor?Boston?MA??02110-1301??USA
?*
?*/

/*?todo?items:

??use?a?log2?table?for?byte?integer?scale?factors?calculation?（sum?log2?results
??for?high?and?low?bytes）?fill?bitpool?by?16?bits?instead?of?one?at?a?time?in
??bits?allocation/bitpool?generation?port?to?the?dsp

*/

#ifdef?HAVE_CONFIG_H
#include?
#endif

#include?
#include?
#include?
#include?
#include?
#include?
#include?


#include?“sbc_math.h“
#include?“sbc_tables.h“

#include?“sbc.h“

#define?SBC_SYNCWORD	0x9C

/*?sampling?frequency?*/
#define?SBC_FS_16	0x00
#define?SBC_FS_32	0x01
#define?SBC_FS_44	0x02
#define?SBC_FS_48	0x03

/*?nrof_blocks?*/
#define?SBC_NB_4	0x00
#define?SBC_NB_8	0x01
#define?SBC_NB_12	0x02
#define?SBC_NB_16	0x03

/*?channel?mode?*/
#define?SBC_CM_MONO		0x00
#define?SBC_CM_DUAL_CHANNEL	0x01
#define?SBC_CM_STEREO		0x02
#define?SBC_CM_JOINT_STEREO	0x03

/*?allocation?mode?*/
#define?SBC_AM_LOUDNESS		0x00
#define?SBC_AM_SNR		0x01

/*?subbands?*/
#define?SBC_SB_4	0x00
#define?SBC_SB_8	0x01

/*?This?structure?contains?an?unpacked?SBC?frame.
???Yes?there?is?probably?quite?some?unused?space?herein?*/
struct?sbc_frame?{
	uint16_t?sampling_frequency;	/*?in?kHz?*/
	uint8_t?blocks;
	enum?{
		MONO		=?SBC_CM_MONO
		DUAL_CHANNEL	=?SBC_CM_DUAL_CHANNEL
		STEREO		=?SBC_CM_STEREO
		JOINT_STEREO	=?SBC_CM_JOINT_STEREO
	}?channel_mode;
	uint8_t?channels;
	enum?{
		LOUDNESS	=?SBC_AM_LOUDNESS
		SNR		=?SBC_AM_SNR
	}?allocation_method;
	uint8_t?subbands;
	uint8_t?bitpool;
	uint8_t?codesize;
	uint8_t?length;

	/*?bit?number?x?set?means?joint?stereo?has?been?used?in?subband?x?*/
	uint8_t?join;

	/*?only?the?lower?4?bits?of?every?element?are?to?be?used?*/
	uint8_t?scale_factor[2][8];

	/*?raw?integer?subband?samples?in?the?frame?*/
	uint16_t?audio_sample[16][2][8];

	int32_t?sb_sample_f[16][2][8];
	int32_t?sb_sample[16][2][8];	/*?modified?subband?samples?*/
	int16_t?pcm_sample[2][16*8];	/*?original?pcm?audio?samples?*/
};

struct?sbc_decoder_st

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????403??2007-10-26?07:09??sbc_c\Makefile.am

?????文件??????15954??2007-12-26?00:43??sbc_c\Makefile.in

?????文件??????36626??2008-02-14?17:41??sbc_c\sbc.c

?????文件???????1846??2008-02-14?17:06??sbc_c\sbc.h

?????文件??????16384??2008-01-02?12:12??sbc_c\sbccode.IAB

?????文件????????488??2008-01-02?12:12??sbc_c\sbccode.IAD

?????文件???????4096??2008-01-02?12:12??sbc_c\sbccode.IMB

?????文件????????368??2008-01-02?12:12??sbc_c\sbccode.IMD

?????文件?????????32??2008-01-05?11:48??sbc_c\sbccode.PFI

?????文件????????776??2008-01-05?11:48??sbc_c\sbccode.PO

?????文件???????3008??2008-01-02?12:12??sbc_c\sbccode.PR

?????文件??????16704??2008-01-02?12:12??sbc_c\sbccode.PRI

?????文件??????35772??2008-01-05?14:06??sbc_c\sbccode.PS

?????文件???????6422??2008-01-05?14:06??sbc_c\sbccode.WK3

?????文件???????5631??2008-01-05?11:10??sbc_c\sbcdec.c

?????文件???????5555??2007-12-09?03:04??sbc_c\sbcenc.c

?????文件???????6915??2008-01-03?12:07??sbc_c\sbcinfo.c

?????文件???????8717??2007-12-09?03:04??sbc_c\sbctester.c

?????文件???????2808??2008-02-15?10:11??sbc_c\sbc_math.h

?????文件???????8413??2008-02-15?11:06??sbc_c\sbc_tables.h

?????目錄??????????0??2014-03-24?16:26??sbc_c

-----------?---------??----------?-----??----

???????????????176918????????????????????21