/*
?*?FAAC?-?Freeware?Advanced?Audio?Coder
?*?Copyright?（C）?2001?Menno?Bakker
?*
?*?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.?59?Temple?Place?Suite?330?Boston?MA??02111-1307??USA
?*
?*?$Id:?aacquant.cv?1.3?2001/06/04?23:02:24?wmay?Exp?$
?*/

#include?
#include?

#include?“aacquant.h“
#include?“coder.h“
#include?“huffman.h“
#include?“psych.h“
#include?“util.h“


#define?XRPOW_FTOI（srcdest）?（（dest）?=?（int）（src））
#define?QUANTFAC（rx）??adj43[rx]
#define?ROUNDFAC?0.4054


double?*pow43;
double?*adj43;
double?*adj43asm;


void?AACQuantizeInit（CoderInfo?*coderInfo?unsigned?int?numChannels）
{
	unsigned?int?channel?i;

	pow43?=?（double*）AllocMemory（PRECALC_SIZE*sizeof（double））;
	adj43?=?（double*）AllocMemory（PRECALC_SIZE*sizeof（double））;
	adj43asm?=?（double*）AllocMemory（PRECALC_SIZE*sizeof（double））;

	pow43[0]?=?0.0;
	for（i=1;i		pow43[i]?=?pow（（double）i?4.0/3.0）;

	adj43asm[0]?=?0.0;
	for?（i?=?1;?i?		adj43asm[i]?=?i?-?0.5?-?pow（0.5?*?（pow43[i?-?1]?+?pow43[i]）0.75）;
	for?（i?=?0;?i?		adj43[i]?=?（i?+?1）?-?pow（0.5?*?（pow43[i]?+?pow43[i?+?1]）?0.75）;
	adj43[i]?=?0.5;

	for?（channel?=?0;?channel?		coderInfo[channel].old_value?=?0;
		coderInfo[channel].CurrentStep?=?4;

		coderInfo[channel].requantFreq?=?（double*）AllocMemory（BLOCK_LEN_LONG*sizeof（double））;
	}
}

void?AACQuantizeEnd（CoderInfo?*coderInfo?unsigned?int?numChannels）
{
	unsigned?int?channel;

	if?（pow43）?FreeMemory（pow43）;
	if?（adj43）?FreeMemory（adj43）;
	if?（adj43asm）?FreeMemory（adj43asm）;

	for?（channel?=?0;?channel?		if?（coderInfo[channel].requantFreq）?FreeMemory（coderInfo[channel].requantFreq）;
	}
}

int?AACQuantize（CoderInfo?*coderInfo
				PsyInfo?*psyInfo
				ChannelInfo?*channelInfo
				int?*cb_width
				int?num_cb
				double?*xr
				int?desired_rate）
{
	int?sb?i?do_q?=?0;
	int?bits?sign;
	double?*xr_pow?*xmin;
	int?*xi;

	/*?Use?local?copy‘s?*/
	int?*scale_factor?=?coderInfo->scale_factor;


	xr_pow?=?（double*）AllocMemory（frame_LEN*sizeof（double））;
	xmin?=?（double*）AllocMemory（MAX_SCFAC_BANDS*sizeof（double））;
	xi?=?（int*）AllocMemory（frame_LEN*sizeof（int））;


	if?（coderInfo->block_type?==?ONLY_SHORT_WINDOW）?{
		SortForG

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

?????文件??????18195??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\aacquant.c

?????文件??????10884??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\backpred.c

?????文件??????21930??2002-02-26?06:26??31767636MPEG4_sound\MPEG4音頻編碼\bitstream.c

?????文件???????4876??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\channels.c

?????文件??????41984??2008-05-13?15:00??31767636MPEG4_sound\MPEG4音頻編碼\Debug\vc60.idb

?????文件??????28672??2008-05-13?15:00??31767636MPEG4_sound\MPEG4音頻編碼\Debug\vc60.pdb

?????文件???????8543??2002-04-25?06:25??31767636MPEG4_sound\MPEG4音頻編碼\faac.c

?????文件???????5178??2002-04-25?06:25??31767636MPEG4_sound\MPEG4音頻編碼\faac60.dsp

?????文件????????843??2002-02-22?02:51??31767636MPEG4_sound\MPEG4音頻編碼\faac60.dsw

?????文件?????115712??2008-05-13?15:00??31767636MPEG4_sound\MPEG4音頻編碼\faac60.ncb

?????文件??????54784??2008-05-13?15:00??31767636MPEG4_sound\MPEG4音頻編碼\faac60.opt

?????文件??????32969??2008-05-13?15:00??31767636MPEG4_sound\MPEG4音頻編碼\faac60.plg

?????文件??????12817??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\fft.c

?????文件??????18321??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\filtbank.c

?????文件??????18654??2002-02-26?06:26??31767636MPEG4_sound\MPEG4音頻編碼\frame.c

?????文件??????31398??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\huffman.c

?????文件???????5996??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\joint.c

?????文件??????10869??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\ltp.c

?????文件??????40821??2001-07-13?06:48??31767636MPEG4_sound\MPEG4音頻編碼\psych.c

?????文件????????490??2002-09-18?12:50??31767636MPEG4_sound\MPEG4音頻編碼\readme.txt

?????文件??????18706??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\tns.c

?????文件???????2969??2001-06-05?07:02??31767636MPEG4_sound\MPEG4音頻編碼\util.c

?????目錄??????????0??2008-05-13?13:36??31767636MPEG4_sound\MPEG4音頻編碼\Debug

?????目錄??????????0??2008-05-13?15:00??31767636MPEG4_sound\MPEG4音頻編碼

?????目錄??????????0??2008-05-13?16:50??31767636MPEG4_sound

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

???????????????505611????????????????????25