| |
| /* ----------------------------------------------------------------------------------------------------------- |
| 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); |
| } |
| |
| |
| |
