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author | The Android Open Source Project <initial-contribution@android.com> | 2012-07-11 10:15:24 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2012-07-11 10:15:24 -0700 |
commit | 2228e360595641dd906bf1773307f43d304f5b2e (patch) | |
tree | 57f3d390ebb0782cc0de0fb984c8ea7e45b4f386 /libAACenc/src/bit_cnt.cpp | |
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Snapshot 2bda038c163298531d47394bc2c09e1409c5d0db
Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54
Diffstat (limited to 'libAACenc/src/bit_cnt.cpp')
-rw-r--r-- | libAACenc/src/bit_cnt.cpp | 1122 |
1 files changed, 1122 insertions, 0 deletions
diff --git a/libAACenc/src/bit_cnt.cpp b/libAACenc/src/bit_cnt.cpp new file mode 100644 index 0000000..e89710e --- /dev/null +++ b/libAACenc/src/bit_cnt.cpp @@ -0,0 +1,1122 @@ + +/* ----------------------------------------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. + All rights reserved. + + 1. INTRODUCTION +The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements +the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. +This FDK AAC Codec software is intended to be used on a wide variety of Android devices. + +AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual +audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by +independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part +of the MPEG specifications. + +Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) +may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners +individually for the purpose of encoding or decoding bit streams in products that are compliant with +the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license +these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec +software may already be covered under those patent licenses when it is used for those licensed purposes only. + +Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, +are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional +applications information and documentation. + +2. COPYRIGHT LICENSE + +Redistribution and use in source and binary forms, with or without modification, are permitted without +payment of copyright license fees provided that you satisfy the following conditions: + +You must retain the complete text of this software license in redistributions of the FDK AAC Codec or +your modifications thereto in source code form. + +You must retain the complete text of this software license in the documentation and/or other materials +provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. +You must make available free of charge copies of the complete source code of the FDK AAC Codec and your +modifications thereto to recipients of copies in binary form. + +The name of Fraunhofer may not be used to endorse or promote products derived from this library without +prior written permission. + +You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec +software or your modifications thereto. + +Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software +and the date of any change. For modified versions of the FDK AAC Codec, the term +"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term +"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." + +3. NO PATENT LICENSE + +NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, +ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with +respect to this software. + +You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized +by appropriate patent licenses. + +4. DISCLAIMER + +This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors +"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties +of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR +CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, +including but not limited to procurement of substitute goods or services; loss of use, data, or profits, +or business interruption, however caused and on any theory of liability, whether in contract, strict +liability, or tort (including negligence), arising in any way out of the use of this software, even if +advised of the possibility of such damage. + +5. CONTACT INFORMATION + +Fraunhofer Institute for Integrated Circuits IIS +Attention: Audio and Multimedia Departments - FDK AAC LL +Am Wolfsmantel 33 +91058 Erlangen, Germany + +www.iis.fraunhofer.de/amm +amm-info@iis.fraunhofer.de +----------------------------------------------------------------------------------------------------------- */ + +/******************************** MPEG Audio Encoder ************************** + + Initial author: M.Werner + contents/description: Huffman Bitcounter & coder + +******************************************************************************/ + +#include "bit_cnt.h" + +#include "aacEnc_ram.h" + +#define HI_LTAB(a) (a>>16) +#define LO_LTAB(a) (a & 0xffff) + +/***************************************************************************** + + + functionname: FDKaacEnc_count1_2_3_4_5_6_7_8_9_10_11 + description: counts tables 1-11 + returns: + input: quantized spectrum + output: bitCount for tables 1-11 + +*****************************************************************************/ + +static void FDKaacEnc_count1_2_3_4_5_6_7_8_9_10_11(const SHORT *RESTRICT values, + const INT width, + INT *bitCount) +{ + + INT i; + INT bc1_2,bc3_4,bc5_6,bc7_8,bc9_10,bc11,sc; + INT t0,t1,t2,t3; + bc1_2=0; + bc3_4=0; + bc5_6=0; + bc7_8=0; + bc9_10=0; + bc11=0; + sc=0; + + for(i=0;i<width;i+=4){ + + t0= values[i+0]; + t1= values[i+1]; + t2= values[i+2]; + t3= values[i+3]; + + /* 1,2 */ + + bc1_2+=FDKaacEnc_huff_ltab1_2[t0+1][t1+1][t2+1][t3+1]; + + /* 5,6 */ + bc5_6+=FDKaacEnc_huff_ltab5_6[t0+4][t1+4]; + bc5_6+=FDKaacEnc_huff_ltab5_6[t2+4][t3+4]; + + t0=fixp_abs(t0); + t1=fixp_abs(t1); + t2=fixp_abs(t2); + t3=fixp_abs(t3); + + + bc3_4+= FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]; + + bc7_8+=FDKaacEnc_huff_ltab7_8[t0][t1]; + bc7_8+=FDKaacEnc_huff_ltab7_8[t2][t3]; + + bc9_10+=FDKaacEnc_huff_ltab9_10[t0][t1]; + bc9_10+=FDKaacEnc_huff_ltab9_10[t2][t3]; + + bc11+= (INT) FDKaacEnc_huff_ltab11[t0][t1]; + bc11+= (INT) FDKaacEnc_huff_ltab11[t2][t3]; + + sc+=(t0>0)+(t1>0)+(t2>0)+(t3>0); + } + + bitCount[1]=HI_LTAB(bc1_2); + bitCount[2]=LO_LTAB(bc1_2); + bitCount[3]=HI_LTAB(bc3_4)+sc; + bitCount[4]=LO_LTAB(bc3_4)+sc; + bitCount[5]=HI_LTAB(bc5_6); + bitCount[6]=LO_LTAB(bc5_6); + bitCount[7]=HI_LTAB(bc7_8)+sc; + bitCount[8]=LO_LTAB(bc7_8)+sc; + bitCount[9]=HI_LTAB(bc9_10)+sc; + bitCount[10]=LO_LTAB(bc9_10)+sc; + bitCount[11]=bc11+sc; + +} + + +/***************************************************************************** + + functionname: FDKaacEnc_count3_4_5_6_7_8_9_10_11 + description: counts tables 3-11 + returns: + input: quantized spectrum + output: bitCount for tables 3-11 + +*****************************************************************************/ + +static void FDKaacEnc_count3_4_5_6_7_8_9_10_11(const SHORT *RESTRICT values, + const INT width, + INT *bitCount) +{ + + INT i; + INT bc3_4,bc5_6,bc7_8,bc9_10,bc11,sc; + INT t0,t1,t2,t3; + + bc3_4=0; + bc5_6=0; + bc7_8=0; + bc9_10=0; + bc11=0; + sc=0; + + for(i=0;i<width;i+=4){ + + t0= values[i+0]; + t1= values[i+1]; + t2= values[i+2]; + t3= values[i+3]; + + bc5_6+=FDKaacEnc_huff_ltab5_6[t0+4][t1+4]; + bc5_6+=FDKaacEnc_huff_ltab5_6[t2+4][t3+4]; + + t0=fixp_abs(t0); + t1=fixp_abs(t1); + t2=fixp_abs(t2); + t3=fixp_abs(t3); + + bc3_4+= FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]; + + bc7_8+=FDKaacEnc_huff_ltab7_8[t0][t1]; + bc7_8+=FDKaacEnc_huff_ltab7_8[t2][t3]; + + bc9_10+=FDKaacEnc_huff_ltab9_10[t0][t1]; + bc9_10+=FDKaacEnc_huff_ltab9_10[t2][t3]; + + bc11+= (INT) FDKaacEnc_huff_ltab11[t0][t1]; + bc11+= (INT) FDKaacEnc_huff_ltab11[t2][t3]; + + sc+=(t0>0)+(t1>0)+(t2>0)+(t3>0); + } + + bitCount[1]=INVALID_BITCOUNT; + bitCount[2]=INVALID_BITCOUNT; + bitCount[3]=HI_LTAB(bc3_4)+sc; + bitCount[4]=LO_LTAB(bc3_4)+sc; + bitCount[5]=HI_LTAB(bc5_6); + bitCount[6]=LO_LTAB(bc5_6); + bitCount[7]=HI_LTAB(bc7_8)+sc; + bitCount[8]=LO_LTAB(bc7_8)+sc; + bitCount[9]=HI_LTAB(bc9_10)+sc; + bitCount[10]=LO_LTAB(bc9_10)+sc; + bitCount[11]=bc11+sc; +} + + + +/***************************************************************************** + + functionname: FDKaacEnc_count5_6_7_8_9_10_11 + description: counts tables 5-11 + returns: + input: quantized spectrum + output: bitCount for tables 5-11 + +*****************************************************************************/ + + +static void FDKaacEnc_count5_6_7_8_9_10_11(const SHORT *RESTRICT values, + const INT width, + INT *bitCount) +{ + + INT i; + INT bc5_6,bc7_8,bc9_10,bc11,sc; + INT t0,t1; + bc5_6=0; + bc7_8=0; + bc9_10=0; + bc11=0; + sc=0; + + for(i=0;i<width;i+=2){ + + t0 = values[i+0]; + t1 = values[i+1]; + + bc5_6+=FDKaacEnc_huff_ltab5_6[t0+4][t1+4]; + + t0=fixp_abs(t0); + t1=fixp_abs(t1); + + bc7_8+=FDKaacEnc_huff_ltab7_8[t0][t1]; + bc9_10+=FDKaacEnc_huff_ltab9_10[t0][t1]; + bc11+= (INT) FDKaacEnc_huff_ltab11[t0][t1]; + + sc+=(t0>0)+(t1>0); + } + bitCount[1]=INVALID_BITCOUNT; + bitCount[2]=INVALID_BITCOUNT; + bitCount[3]=INVALID_BITCOUNT; + bitCount[4]=INVALID_BITCOUNT; + bitCount[5]=HI_LTAB(bc5_6); + bitCount[6]=LO_LTAB(bc5_6); + bitCount[7]=HI_LTAB(bc7_8)+sc; + bitCount[8]=LO_LTAB(bc7_8)+sc; + bitCount[9]=HI_LTAB(bc9_10)+sc; + bitCount[10]=LO_LTAB(bc9_10)+sc; + bitCount[11]=bc11+sc; + +} + + +/***************************************************************************** + + functionname: FDKaacEnc_count7_8_9_10_11 + description: counts tables 7-11 + returns: + input: quantized spectrum + output: bitCount for tables 7-11 + +*****************************************************************************/ + +static void FDKaacEnc_count7_8_9_10_11(const SHORT *RESTRICT values, + const INT width, + INT *bitCount) +{ + + INT i; + INT bc7_8,bc9_10,bc11,sc; + INT t0,t1; + + bc7_8=0; + bc9_10=0; + bc11=0; + sc=0; + + for(i=0;i<width;i+=2){ + t0=fixp_abs(values[i+0]); + t1=fixp_abs(values[i+1]); + + bc7_8+=FDKaacEnc_huff_ltab7_8[t0][t1]; + bc9_10+=FDKaacEnc_huff_ltab9_10[t0][t1]; + bc11+= (INT) FDKaacEnc_huff_ltab11[t0][t1]; + sc+=(t0>0)+(t1>0); + } + + bitCount[1]=INVALID_BITCOUNT; + bitCount[2]=INVALID_BITCOUNT; + bitCount[3]=INVALID_BITCOUNT; + bitCount[4]=INVALID_BITCOUNT; + bitCount[5]=INVALID_BITCOUNT; + bitCount[6]=INVALID_BITCOUNT; + bitCount[7]=HI_LTAB(bc7_8)+sc; + bitCount[8]=LO_LTAB(bc7_8)+sc; + bitCount[9]=HI_LTAB(bc9_10)+sc; + bitCount[10]=LO_LTAB(bc9_10)+sc; + bitCount[11]=bc11+sc; + +} + +/***************************************************************************** + + functionname: FDKaacEnc_count9_10_11 + description: counts tables 9-11 + returns: + input: quantized spectrum + output: bitCount for tables 9-11 + +*****************************************************************************/ + + + +static void FDKaacEnc_count9_10_11(const SHORT *RESTRICT values, + const INT width, + INT *bitCount) +{ + + INT i; + INT bc9_10,bc11,sc; + INT t0,t1; + + bc9_10=0; + bc11=0; + sc=0; + + for(i=0;i<width;i+=2){ + t0=fixp_abs(values[i+0]); + t1=fixp_abs(values[i+1]); + + bc9_10+=FDKaacEnc_huff_ltab9_10[t0][t1]; + bc11+= (INT) FDKaacEnc_huff_ltab11[t0][t1]; + + sc+=(t0>0)+(t1>0); + } + + bitCount[1]=INVALID_BITCOUNT; + bitCount[2]=INVALID_BITCOUNT; + bitCount[3]=INVALID_BITCOUNT; + bitCount[4]=INVALID_BITCOUNT; + bitCount[5]=INVALID_BITCOUNT; + bitCount[6]=INVALID_BITCOUNT; + bitCount[7]=INVALID_BITCOUNT; + bitCount[8]=INVALID_BITCOUNT; + bitCount[9]=HI_LTAB(bc9_10)+sc; + bitCount[10]=LO_LTAB(bc9_10)+sc; + bitCount[11]=bc11+sc; + +} + +/***************************************************************************** + + functionname: FDKaacEnc_count11 + description: counts table 11 + returns: + input: quantized spectrum + output: bitCount for table 11 + +*****************************************************************************/ + +static void FDKaacEnc_count11(const SHORT *RESTRICT values, + const INT width, + INT *bitCount) +{ + + INT i; + INT bc11,sc; + INT t0,t1; + + bc11=0; + sc=0; + for(i=0;i<width;i+=2){ + t0=fixp_abs(values[i+0]); + t1=fixp_abs(values[i+1]); + bc11+= (INT) FDKaacEnc_huff_ltab11[t0][t1]; + sc+=(t0>0)+(t1>0); + } + + bitCount[1]=INVALID_BITCOUNT; + bitCount[2]=INVALID_BITCOUNT; + bitCount[3]=INVALID_BITCOUNT; + bitCount[4]=INVALID_BITCOUNT; + bitCount[5]=INVALID_BITCOUNT; + bitCount[6]=INVALID_BITCOUNT; + bitCount[7]=INVALID_BITCOUNT; + bitCount[8]=INVALID_BITCOUNT; + bitCount[9]=INVALID_BITCOUNT; + bitCount[10]=INVALID_BITCOUNT; + bitCount[11]=bc11+sc; +} + +/***************************************************************************** + + functionname: FDKaacEnc_countEsc + description: counts table 11 (with Esc) + returns: + input: quantized spectrum + output: bitCount for tables 11 (with Esc) + +*****************************************************************************/ + +static void FDKaacEnc_countEsc(const SHORT *RESTRICT values, + const INT width, + INT *RESTRICT bitCount) +{ + + INT i; + INT bc11,ec,sc; + INT t0,t1,t00,t01; + + bc11=0; + sc=0; + ec=0; + for(i=0;i<width;i+=2){ + t0=fixp_abs(values[i+0]); + t1=fixp_abs(values[i+1]); + + sc+=(t0>0)+(t1>0); + + t00 = fixMin(t0,16); + t01 = fixMin(t1,16); + bc11+= (INT) FDKaacEnc_huff_ltab11[t00][t01]; + + if(t0>=16){ + ec+=5; + while((t0>>=1) >= 16) + ec+=2; + } + + if(t1>=16){ + ec+=5; + while((t1>>=1) >= 16) + ec+=2; + } + } + + for (i=0; i<11; i++) + bitCount[i]=INVALID_BITCOUNT; + + bitCount[11]=bc11+sc+ec; +} + + +typedef void (*COUNT_FUNCTION)(const SHORT *RESTRICT values, + const INT width, + INT *RESTRICT bitCount); + +static const COUNT_FUNCTION countFuncTable[CODE_BOOK_ESC_LAV+1] = +{ + + FDKaacEnc_count1_2_3_4_5_6_7_8_9_10_11, /* 0 */ + FDKaacEnc_count1_2_3_4_5_6_7_8_9_10_11, /* 1 */ + FDKaacEnc_count3_4_5_6_7_8_9_10_11, /* 2 */ + FDKaacEnc_count5_6_7_8_9_10_11, /* 3 */ + FDKaacEnc_count5_6_7_8_9_10_11, /* 4 */ + FDKaacEnc_count7_8_9_10_11, /* 5 */ + FDKaacEnc_count7_8_9_10_11, /* 6 */ + FDKaacEnc_count7_8_9_10_11, /* 7 */ + FDKaacEnc_count9_10_11, /* 8 */ + FDKaacEnc_count9_10_11, /* 9 */ + FDKaacEnc_count9_10_11, /* 10 */ + FDKaacEnc_count9_10_11, /* 11 */ + FDKaacEnc_count9_10_11, /* 12 */ + FDKaacEnc_count11, /* 13 */ + FDKaacEnc_count11, /* 14 */ + FDKaacEnc_count11, /* 15 */ + FDKaacEnc_countEsc /* 16 */ +}; + + + +INT FDKaacEnc_bitCount(const SHORT *values, + const INT width, + INT maxVal, + INT *bitCount) +{ + + /* + check if we can use codebook 0 + */ + + if(maxVal == 0) + bitCount[0] = 0; + else + bitCount[0] = INVALID_BITCOUNT; + + maxVal = fixMin(maxVal,(INT)CODE_BOOK_ESC_LAV); + countFuncTable[maxVal](values,width,bitCount); + return(0); +} + + + + +/* + count difference between actual and zeroed lines +*/ +INT FDKaacEnc_countValues(SHORT *RESTRICT values, INT width, INT codeBook) +{ + + INT i,t0,t1,t2,t3,t00,t01; + INT codeLength; + INT signLength; + INT bitCnt=0; + + switch(codeBook){ + case CODE_BOOK_ZERO_NO: + break; + + case CODE_BOOK_1_NO: + for(i=0; i<width; i+=4) { + t0 = values[i+0]; + t1 = values[i+1]; + t2 = values[i+2]; + t3 = values[i+3]; + codeLength = HI_LTAB(FDKaacEnc_huff_ltab1_2[t0+1][t1+1][t2+1][t3+1]); + bitCnt+= codeLength; + } + break; + + case CODE_BOOK_2_NO: + for(i=0; i<width; i+=4) { + t0 = values[i+0]; + t1 = values[i+1]; + t2 = values[i+2]; + t3 = values[i+3]; + codeLength = LO_LTAB(FDKaacEnc_huff_ltab1_2[t0+1][t1+1][t2+1][t3+1]); + bitCnt+= codeLength; + } + break; + + case CODE_BOOK_3_NO: + for(i=0; i<width; i+=4) { + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + t0=fixp_abs(t0); + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + t1=fixp_abs(t1); + } + t2 = values[i+2]; + if(t2 != 0){ + signLength++; + t2=fixp_abs(t2); + } + t3 = values[i+3]; + if(t3 != 0){ + signLength++; + t3=fixp_abs(t3); + } + + codeLength = HI_LTAB(FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]); + bitCnt+=codeLength+signLength; + } + break; + + case CODE_BOOK_4_NO: + for(i=0; i<width; i+=4) { + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + t0=fixp_abs(t0); + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + t1=fixp_abs(t1); + } + t2 = values[i+2]; + if(t2 != 0){ + signLength++; + t2=fixp_abs(t2); + } + t3 = values[i+3]; + if(t3 != 0){ + signLength++; + t3=fixp_abs(t3); + } + codeLength = LO_LTAB(FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]); + bitCnt+=codeLength+signLength; + } + break; + + case CODE_BOOK_5_NO: + for(i=0; i<width; i+=2) { + t0 = values[i+0]; + t1 = values[i+1]; + codeLength = HI_LTAB(FDKaacEnc_huff_ltab5_6[t0+4][t1+4]); + bitCnt+=codeLength; + } + break; + + case CODE_BOOK_6_NO: + for(i=0; i<width; i+=2) { + t0 = values[i+0]; + t1 = values[i+1]; + codeLength = LO_LTAB(FDKaacEnc_huff_ltab5_6[t0+4][t1+4]); + bitCnt+=codeLength; + } + break; + + case CODE_BOOK_7_NO: + for(i=0; i<width; i+=2){ + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + t0=fixp_abs(t0); + } + + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + t1=fixp_abs(t1); + } + codeLength = HI_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]); + bitCnt+=codeLength +signLength; + } + break; + + case CODE_BOOK_8_NO: + for(i=0; i<width; i+=2) { + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + t0=fixp_abs(t0); + } + + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + t1=fixp_abs(t1); + } + codeLength = LO_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]); + bitCnt+=codeLength +signLength; + } + break; + + case CODE_BOOK_9_NO: + for(i=0; i<width; i+=2) { + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + t0=fixp_abs(t0); + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + t1=fixp_abs(t1); + } + codeLength = HI_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]); + bitCnt+=codeLength +signLength; + } + break; + + case CODE_BOOK_10_NO: + for(i=0; i<width; i+=2) { + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + t0=fixp_abs(t0); + } + + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + t1=fixp_abs(t1); + } + codeLength = LO_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]); + bitCnt+=codeLength +signLength; + } + break; + + case CODE_BOOK_ESC_NO: + for(i=0; i<width; i+=2) { + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + t0=fixp_abs(t0); + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + t1=fixp_abs(t1); + } + t00 = fixMin(t0,16); + t01 = fixMin(t1,16); + + codeLength = (INT) FDKaacEnc_huff_ltab11[t00][t01]; + bitCnt+=codeLength +signLength; + if(t0 >=16){ + INT n,p; + n=0; + p=t0; + while((p>>=1) >=16){ + bitCnt++; + n++; + } + bitCnt+=(n+5); + } + if(t1 >=16){ + INT n,p; + n=0; + p=t1; + while((p>>=1) >=16){ + bitCnt++; + n++; + } + bitCnt+=(n+5); + } + } + break; + + default: + break; + } + + return(bitCnt); +} + + + +INT FDKaacEnc_codeValues(SHORT *RESTRICT values, INT width, INT codeBook, HANDLE_FDK_BITSTREAM hBitstream) +{ + + INT i,t0,t1,t2,t3,t00,t01; + INT codeWord,codeLength; + INT sign,signLength; + + switch(codeBook){ + case CODE_BOOK_ZERO_NO: + break; + + case CODE_BOOK_1_NO: + for(i=0; i<width; i+=4) { + t0 = values[i+0]+1; + t1 = values[i+1]+1; + t2 = values[i+2]+1; + t3 = values[i+3]+1; + codeWord = FDKaacEnc_huff_ctab1[t0][t1][t2][t3]; + codeLength = HI_LTAB(FDKaacEnc_huff_ltab1_2[t0][t1][t2][t3]); + FDKwriteBits(hBitstream,codeWord,codeLength); + } + break; + + case CODE_BOOK_2_NO: + for(i=0; i<width; i+=4) { + t0 = values[i+0]+1; + t1 = values[i+1]+1; + t2 = values[i+2]+1; + t3 = values[i+3]+1; + codeWord = FDKaacEnc_huff_ctab2[t0][t1][t2][t3]; + codeLength = LO_LTAB(FDKaacEnc_huff_ltab1_2[t0][t1][t2][t3]); + FDKwriteBits(hBitstream,codeWord,codeLength); + } + break; + + case CODE_BOOK_3_NO: + for(i=0; i<width; i+=4) { + sign=0; + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + sign<<=1; + if(t0 < 0){ + sign|=1; + t0=fixp_abs(t0); + } + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + sign<<=1; + if(t1 < 0){ + sign|=1; + t1=fixp_abs(t1); + } + } + t2 = values[i+2]; + if(t2 != 0){ + signLength++; + sign<<=1; + if(t2 < 0){ + sign|=1; + t2=fixp_abs(t2); + } + } + t3 = values[i+3]; + if(t3 != 0){ + signLength++; + sign<<=1; + if(t3 < 0){ + sign|=1; + t3=fixp_abs(t3); + } + } + + codeWord = FDKaacEnc_huff_ctab3[t0][t1][t2][t3]; + codeLength = HI_LTAB(FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]); + FDKwriteBits(hBitstream,codeWord,codeLength); + FDKwriteBits(hBitstream,sign,signLength); + } + break; + + case CODE_BOOK_4_NO: + for(i=0; i<width; i+=4) { + sign=0; + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + sign<<=1; + if(t0 < 0){ + sign|=1; + t0=fixp_abs(t0); + } + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + sign<<=1; + if(t1 < 0){ + sign|=1; + t1=fixp_abs(t1); + } + } + t2 = values[i+2]; + if(t2 != 0){ + signLength++; + sign<<=1; + if(t2 < 0){ + sign|=1; + t2=fixp_abs(t2); + } + } + t3 = values[i+3]; + if(t3 != 0){ + signLength++; + sign<<=1; + if(t3 < 0){ + sign|=1; + t3=fixp_abs(t3); + } + } + codeWord = FDKaacEnc_huff_ctab4[t0][t1][t2][t3]; + codeLength = LO_LTAB(FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]); + FDKwriteBits(hBitstream,codeWord,codeLength); + FDKwriteBits(hBitstream,sign,signLength); + } + break; + + case CODE_BOOK_5_NO: + for(i=0; i<width; i+=2) { + t0 = values[i+0]+4; + t1 = values[i+1]+4; + codeWord = FDKaacEnc_huff_ctab5[t0][t1]; + codeLength = HI_LTAB(FDKaacEnc_huff_ltab5_6[t0][t1]); + FDKwriteBits(hBitstream,codeWord,codeLength); + } + break; + + case CODE_BOOK_6_NO: + for(i=0; i<width; i+=2) { + t0 = values[i+0]+4; + t1 = values[i+1]+4; + codeWord = FDKaacEnc_huff_ctab6[t0][t1]; + codeLength = LO_LTAB(FDKaacEnc_huff_ltab5_6[t0][t1]); + FDKwriteBits(hBitstream,codeWord,codeLength); + } + break; + + case CODE_BOOK_7_NO: + for(i=0; i<width; i+=2){ + sign=0; + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + sign<<=1; + if(t0 < 0){ + sign|=1; + t0=fixp_abs(t0); + } + } + + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + sign<<=1; + if(t1 < 0){ + sign|=1; + t1=fixp_abs(t1); + } + } + codeWord = FDKaacEnc_huff_ctab7[t0][t1]; + codeLength = HI_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]); + FDKwriteBits(hBitstream,codeWord,codeLength); + FDKwriteBits(hBitstream,sign,signLength); + } + break; + + case CODE_BOOK_8_NO: + for(i=0; i<width; i+=2) { + sign=0; + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + sign<<=1; + if(t0 < 0){ + sign|=1; + t0=fixp_abs(t0); + } + } + + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + sign<<=1; + if(t1 < 0){ + sign|=1; + t1=fixp_abs(t1); + } + } + codeWord = FDKaacEnc_huff_ctab8[t0][t1]; + codeLength = LO_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]); + FDKwriteBits(hBitstream,codeWord,codeLength); + FDKwriteBits(hBitstream,sign,signLength); + } + break; + + case CODE_BOOK_9_NO: + for(i=0; i<width; i+=2) { + sign=0; + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + sign<<=1; + if(t0 < 0){ + sign|=1; + t0=fixp_abs(t0); + } + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + sign<<=1; + if(t1 < 0){ + sign|=1; + t1=fixp_abs(t1); + } + } + codeWord = FDKaacEnc_huff_ctab9[t0][t1]; + codeLength = HI_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]); + FDKwriteBits(hBitstream,codeWord,codeLength); + FDKwriteBits(hBitstream,sign,signLength); + } + break; + + case CODE_BOOK_10_NO: + for(i=0; i<width; i+=2) { + sign=0; + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + sign<<=1; + if(t0 < 0){ + sign|=1; + t0=fixp_abs(t0); + } + } + + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + sign<<=1; + if(t1 < 0){ + sign|=1; + t1=fixp_abs(t1); + } + } + codeWord = FDKaacEnc_huff_ctab10[t0][t1]; + codeLength = LO_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]); + FDKwriteBits(hBitstream,codeWord,codeLength); + FDKwriteBits(hBitstream,sign,signLength); + } + break; + + case CODE_BOOK_ESC_NO: + for(i=0; i<width; i+=2) { + sign=0; + signLength=0; + t0 = values[i+0]; + if(t0 != 0){ + signLength++; + sign<<=1; + if(t0 < 0){ + sign|=1; + t0=fixp_abs(t0); + } + } + t1 = values[i+1]; + if(t1 != 0){ + signLength++; + sign<<=1; + if(t1 < 0){ + sign|=1; + t1=fixp_abs(t1); + } + } + t00 = fixMin(t0,16); + t01 = fixMin(t1,16); + + codeWord = FDKaacEnc_huff_ctab11[t00][t01]; + codeLength = (INT) FDKaacEnc_huff_ltab11[t00][t01]; + FDKwriteBits(hBitstream,codeWord,codeLength); + FDKwriteBits(hBitstream,sign,signLength); + if(t0 >=16){ + INT n,p; + n=0; + p=t0; + while((p>>=1) >=16){ + FDKwriteBits(hBitstream,1,1); + n++; + } + FDKwriteBits(hBitstream,0,1); + FDKwriteBits(hBitstream,t0-(1<<(n+4)),n+4); + } + if(t1 >=16){ + INT n,p; + n=0; + p=t1; + while((p>>=1) >=16){ + FDKwriteBits(hBitstream,1,1); + n++; + } + FDKwriteBits(hBitstream,0,1); + FDKwriteBits(hBitstream,t1-(1<<(n+4)),n+4); + } + } + break; + + default: + break; + } + return(0); +} + +INT FDKaacEnc_codeScalefactorDelta(INT delta, HANDLE_FDK_BITSTREAM hBitstream) +{ + INT codeWord,codeLength; + + if(fixp_abs(delta) >CODE_BOOK_SCF_LAV) + return(1); + + codeWord = FDKaacEnc_huff_ctabscf[delta+CODE_BOOK_SCF_LAV]; + codeLength = (INT)FDKaacEnc_huff_ltabscf[delta+CODE_BOOK_SCF_LAV]; + FDKwriteBits(hBitstream,codeWord,codeLength); + return(0); +} + + + |