| /* ----------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2018 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 |
| ----------------------------------------------------------------------------- */ |
| |
| /**************************** AAC encoder library ****************************** |
| |
| Author(s): M.Werner |
| |
| 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 *const values, |
| const INT width, |
| INT *RESTRICT 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; |
| |
| DWORD_ALIGNED(values); |
| |
| for (i = 0; i < width; i += 4) { |
| t0 = values[i + 0]; |
| t1 = values[i + 1]; |
| t2 = values[i + 2]; |
| t3 = values[i + 3]; |
| |
| bc1_2 += (INT)FDKaacEnc_huff_ltab1_2[t0 + 1][t1 + 1][t2 + 1][t3 + 1]; |
| bc5_6 += (INT)FDKaacEnc_huff_ltab5_6[t0 + 4][t1 + 4] + |
| (INT)FDKaacEnc_huff_ltab5_6[t2 + 4][t3 + 4]; |
| |
| t0 = fixp_abs(t0); |
| sc += (t0 > 0); |
| t1 = fixp_abs(t1); |
| sc += (t1 > 0); |
| t2 = fixp_abs(t2); |
| sc += (t2 > 0); |
| t3 = fixp_abs(t3); |
| sc += (t3 > 0); |
| |
| bc3_4 += (INT)FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]; |
| bc7_8 += (INT)FDKaacEnc_huff_ltab7_8[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab7_8[t2][t3]; |
| bc9_10 += (INT)FDKaacEnc_huff_ltab9_10[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab9_10[t2][t3]; |
| bc11 += |
| (INT)FDKaacEnc_huff_ltab11[t0][t1] + (INT)FDKaacEnc_huff_ltab11[t2][t3]; |
| } |
| 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 *const values, |
| const INT width, |
| INT *RESTRICT 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; |
| |
| DWORD_ALIGNED(values); |
| |
| 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 += (INT)FDKaacEnc_huff_ltab5_6[t0 + 4][t1 + 4] + |
| (INT)FDKaacEnc_huff_ltab5_6[t2 + 4][t3 + 4]; |
| |
| t0 = fixp_abs(t0); |
| sc += (t0 > 0); |
| t1 = fixp_abs(t1); |
| sc += (t1 > 0); |
| t2 = fixp_abs(t2); |
| sc += (t2 > 0); |
| t3 = fixp_abs(t3); |
| sc += (t3 > 0); |
| |
| bc3_4 += (INT)FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]; |
| bc7_8 += (INT)FDKaacEnc_huff_ltab7_8[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab7_8[t2][t3]; |
| bc9_10 += (INT)FDKaacEnc_huff_ltab9_10[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab9_10[t2][t3]; |
| bc11 += |
| (INT)FDKaacEnc_huff_ltab11[t0][t1] + (INT)FDKaacEnc_huff_ltab11[t2][t3]; |
| } |
| |
| 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 *const values, |
| const INT width, |
| INT *RESTRICT bitCount) { |
| INT i; |
| INT bc5_6, bc7_8, bc9_10, bc11, sc; |
| INT t0, t1, t2, t3; |
| bc5_6 = 0; |
| bc7_8 = 0; |
| bc9_10 = 0; |
| bc11 = 0; |
| sc = 0; |
| |
| DWORD_ALIGNED(values); |
| |
| 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 += (INT)FDKaacEnc_huff_ltab5_6[t0 + 4][t1 + 4] + |
| (INT)FDKaacEnc_huff_ltab5_6[t2 + 4][t3 + 4]; |
| |
| t0 = fixp_abs(t0); |
| sc += (t0 > 0); |
| t1 = fixp_abs(t1); |
| sc += (t1 > 0); |
| t2 = fixp_abs(t2); |
| sc += (t2 > 0); |
| t3 = fixp_abs(t3); |
| sc += (t3 > 0); |
| |
| bc7_8 += (INT)FDKaacEnc_huff_ltab7_8[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab7_8[t2][t3]; |
| bc9_10 += (INT)FDKaacEnc_huff_ltab9_10[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab9_10[t2][t3]; |
| bc11 += |
| (INT)FDKaacEnc_huff_ltab11[t0][t1] + (INT)FDKaacEnc_huff_ltab11[t2][t3]; |
| } |
| 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 *const values, |
| const INT width, |
| INT *RESTRICT bitCount) { |
| INT i; |
| INT bc7_8, bc9_10, bc11, sc; |
| INT t0, t1, t2, t3; |
| |
| bc7_8 = 0; |
| bc9_10 = 0; |
| bc11 = 0; |
| sc = 0; |
| |
| DWORD_ALIGNED(values); |
| |
| for (i = 0; i < width; i += 4) { |
| t0 = values[i + 0]; |
| t1 = values[i + 1]; |
| t2 = values[i + 2]; |
| t3 = values[i + 3]; |
| |
| t0 = fixp_abs(t0); |
| sc += (t0 > 0); |
| t1 = fixp_abs(t1); |
| sc += (t1 > 0); |
| t2 = fixp_abs(t2); |
| sc += (t2 > 0); |
| t3 = fixp_abs(t3); |
| sc += (t3 > 0); |
| |
| bc7_8 += (INT)FDKaacEnc_huff_ltab7_8[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab7_8[t2][t3]; |
| bc9_10 += (INT)FDKaacEnc_huff_ltab9_10[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab9_10[t2][t3]; |
| bc11 += |
| (INT)FDKaacEnc_huff_ltab11[t0][t1] + (INT)FDKaacEnc_huff_ltab11[t2][t3]; |
| } |
| |
| 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 *const values, const INT width, |
| INT *RESTRICT bitCount) { |
| INT i; |
| INT bc9_10, bc11, sc; |
| INT t0, t1, t2, t3; |
| |
| bc9_10 = 0; |
| bc11 = 0; |
| sc = 0; |
| |
| DWORD_ALIGNED(values); |
| |
| for (i = 0; i < width; i += 4) { |
| t0 = values[i + 0]; |
| t1 = values[i + 1]; |
| t2 = values[i + 2]; |
| t3 = values[i + 3]; |
| |
| t0 = fixp_abs(t0); |
| sc += (t0 > 0); |
| t1 = fixp_abs(t1); |
| sc += (t1 > 0); |
| t2 = fixp_abs(t2); |
| sc += (t2 > 0); |
| t3 = fixp_abs(t3); |
| sc += (t3 > 0); |
| |
| bc9_10 += (INT)FDKaacEnc_huff_ltab9_10[t0][t1] + |
| (INT)FDKaacEnc_huff_ltab9_10[t2][t3]; |
| bc11 += |
| (INT)FDKaacEnc_huff_ltab11[t0][t1] + (INT)FDKaacEnc_huff_ltab11[t2][t3]; |
| } |
| |
| 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 *const values, const INT width, |
| INT *RESTRICT bitCount) { |
| INT i; |
| INT bc11, sc; |
| INT t0, t1, t2, t3; |
| |
| bc11 = 0; |
| sc = 0; |
| |
| DWORD_ALIGNED(values); |
| |
| for (i = 0; i < width; i += 4) { |
| t0 = values[i + 0]; |
| t1 = values[i + 1]; |
| t2 = values[i + 2]; |
| t3 = values[i + 3]; |
| |
| t0 = fixp_abs(t0); |
| sc += (t0 > 0); |
| t1 = fixp_abs(t1); |
| sc += (t1 > 0); |
| t2 = fixp_abs(t2); |
| sc += (t2 > 0); |
| t3 = fixp_abs(t3); |
| sc += (t3 > 0); |
| |
| bc11 += |
| (INT)FDKaacEnc_huff_ltab11[t0][t1] + (INT)FDKaacEnc_huff_ltab11[t2][t3]; |
| } |
| |
| 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 *const 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 *const 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 *const values, const INT width, |
| const INT maxVal, INT *const RESTRICT bitCount) { |
| /* |
| check if we can use codebook 0 |
| */ |
| |
| bitCount[0] = (maxVal == 0) ? 0 : INVALID_BITCOUNT; |
| |
| countFuncTable[fixMin(maxVal, (INT)CODE_BOOK_ESC_LAV)](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; |
| 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]; |
| bitCnt += |
| HI_LTAB(FDKaacEnc_huff_ltab1_2[t0 + 1][t1 + 1][t2 + 1][t3 + 1]); |
| } |
| 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]; |
| bitCnt += |
| LO_LTAB(FDKaacEnc_huff_ltab1_2[t0 + 1][t1 + 1][t2 + 1][t3 + 1]); |
| } |
| break; |
| |
| case CODE_BOOK_3_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = fixp_abs(values[i + 0]); |
| bitCnt += (t0 > 0); |
| t1 = fixp_abs(values[i + 1]); |
| bitCnt += (t1 > 0); |
| t2 = fixp_abs(values[i + 2]); |
| bitCnt += (t2 > 0); |
| t3 = fixp_abs(values[i + 3]); |
| bitCnt += (t3 > 0); |
| bitCnt += HI_LTAB(FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]); |
| } |
| break; |
| |
| case CODE_BOOK_4_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = fixp_abs(values[i + 0]); |
| bitCnt += (t0 > 0); |
| t1 = fixp_abs(values[i + 1]); |
| bitCnt += (t1 > 0); |
| t2 = fixp_abs(values[i + 2]); |
| bitCnt += (t2 > 0); |
| t3 = fixp_abs(values[i + 3]); |
| bitCnt += (t3 > 0); |
| bitCnt += LO_LTAB(FDKaacEnc_huff_ltab3_4[t0][t1][t2][t3]); |
| } |
| break; |
| |
| case CODE_BOOK_5_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = values[i + 0]; |
| t1 = values[i + 1]; |
| t2 = values[i + 2]; |
| t3 = values[i + 3]; |
| bitCnt += HI_LTAB(FDKaacEnc_huff_ltab5_6[t0 + 4][t1 + 4]) + |
| HI_LTAB(FDKaacEnc_huff_ltab5_6[t2 + 4][t3 + 4]); |
| } |
| break; |
| |
| case CODE_BOOK_6_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = values[i + 0]; |
| t1 = values[i + 1]; |
| t2 = values[i + 2]; |
| t3 = values[i + 3]; |
| bitCnt += LO_LTAB(FDKaacEnc_huff_ltab5_6[t0 + 4][t1 + 4]) + |
| LO_LTAB(FDKaacEnc_huff_ltab5_6[t2 + 4][t3 + 4]); |
| } |
| break; |
| |
| case CODE_BOOK_7_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = fixp_abs(values[i + 0]); |
| bitCnt += (t0 > 0); |
| t1 = fixp_abs(values[i + 1]); |
| bitCnt += (t1 > 0); |
| t2 = fixp_abs(values[i + 2]); |
| bitCnt += (t2 > 0); |
| t3 = fixp_abs(values[i + 3]); |
| bitCnt += (t3 > 0); |
| bitCnt += HI_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]) + |
| HI_LTAB(FDKaacEnc_huff_ltab7_8[t2][t3]); |
| } |
| break; |
| |
| case CODE_BOOK_8_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = fixp_abs(values[i + 0]); |
| bitCnt += (t0 > 0); |
| t1 = fixp_abs(values[i + 1]); |
| bitCnt += (t1 > 0); |
| t2 = fixp_abs(values[i + 2]); |
| bitCnt += (t2 > 0); |
| t3 = fixp_abs(values[i + 3]); |
| bitCnt += (t3 > 0); |
| bitCnt += LO_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]) + |
| LO_LTAB(FDKaacEnc_huff_ltab7_8[t2][t3]); |
| } |
| break; |
| |
| case CODE_BOOK_9_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = fixp_abs(values[i + 0]); |
| bitCnt += (t0 > 0); |
| t1 = fixp_abs(values[i + 1]); |
| bitCnt += (t1 > 0); |
| t2 = fixp_abs(values[i + 2]); |
| bitCnt += (t2 > 0); |
| t3 = fixp_abs(values[i + 3]); |
| bitCnt += (t3 > 0); |
| bitCnt += HI_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]) + |
| HI_LTAB(FDKaacEnc_huff_ltab9_10[t2][t3]); |
| } |
| break; |
| |
| case CODE_BOOK_10_NO: |
| for (i = 0; i < width; i += 4) { |
| t0 = fixp_abs(values[i + 0]); |
| bitCnt += (t0 > 0); |
| t1 = fixp_abs(values[i + 1]); |
| bitCnt += (t1 > 0); |
| t2 = fixp_abs(values[i + 2]); |
| bitCnt += (t2 > 0); |
| t3 = fixp_abs(values[i + 3]); |
| bitCnt += (t3 > 0); |
| bitCnt += LO_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]) + |
| LO_LTAB(FDKaacEnc_huff_ltab9_10[t2][t3]); |
| } |
| break; |
| |
| case CODE_BOOK_ESC_NO: |
| for (i = 0; i < width; i += 2) { |
| t0 = fixp_abs(values[i + 0]); |
| bitCnt += (t0 > 0); |
| t1 = fixp_abs(values[i + 1]); |
| bitCnt += (t1 > 0); |
| bitCnt += (INT)FDKaacEnc_huff_ltab11[fixMin(t0, 16)][fixMin(t1, 16)]; |
| if (t0 >= 16) { |
| bitCnt += 5; |
| while ((t0 >>= 1) >= 16) bitCnt += 2; |
| } |
| if (t1 >= 16) { |
| bitCnt += 5; |
| while ((t1 >>= 1) >= 16) bitCnt += 2; |
| } |
| } |
| 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; |
| |
| DWORD_ALIGNED(values); |
| |
| 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 >> 2); i++) { |
| sign = 0; |
| signLength = 0; |
| int index[4]; |
| for (int j = 0; j < 4; j++) { |
| int ti = *values++; |
| int zero = (ti == 0) ? 0 : 1; |
| signLength += zero; |
| sign = (sign << zero) + ((UINT)ti >> 31); |
| index[j] = fixp_abs(ti); |
| } |
| codeWord = FDKaacEnc_huff_ctab3[index[0]][index[1]][index[2]][index[3]]; |
| codeLength = HI_LTAB( |
| FDKaacEnc_huff_ltab3_4[index[0]][index[1]][index[2]][index[3]]); |
| FDKwriteBits(hBitstream, (codeWord << signLength) | sign, |
| codeLength + signLength); |
| } |
| break; |
| |
| case CODE_BOOK_4_NO: |
| for (i = 0; i < width; i += 4) { |
| sign = 0; |
| signLength = 0; |
| int index[4]; |
| for (int j = 0; j < 4; j++) { |
| int ti = *values++; |
| int zero = (ti == 0) ? 0 : 1; |
| signLength += zero; |
| sign = (sign << zero) + ((UINT)ti >> 31); |
| index[j] = fixp_abs(ti); |
| } |
| codeWord = FDKaacEnc_huff_ctab4[index[0]][index[1]][index[2]][index[3]]; |
| codeLength = LO_LTAB( |
| FDKaacEnc_huff_ltab3_4[index[0]][index[1]][index[2]][index[3]]); |
| FDKwriteBits(hBitstream, (codeWord << signLength) | sign, |
| codeLength + signLength); |
| } |
| break; |
| |
| case CODE_BOOK_5_NO: |
| for (i = 0; i < (width >> 2); i++) { |
| t0 = *values++ + 4; |
| t1 = *values++ + 4; |
| t2 = *values++ + 4; |
| t3 = *values++ + 4; |
| codeWord = FDKaacEnc_huff_ctab5[t0][t1]; |
| codeLength = |
| HI_LTAB(FDKaacEnc_huff_ltab5_6[t2][t3]); /* length of 2nd cw */ |
| codeWord = (codeWord << codeLength) + FDKaacEnc_huff_ctab5[t2][t3]; |
| codeLength += HI_LTAB(FDKaacEnc_huff_ltab5_6[t0][t1]); |
| FDKwriteBits(hBitstream, codeWord, codeLength); |
| } |
| break; |
| |
| case CODE_BOOK_6_NO: |
| for (i = 0; i < (width >> 2); i++) { |
| t0 = *values++ + 4; |
| t1 = *values++ + 4; |
| t2 = *values++ + 4; |
| t3 = *values++ + 4; |
| codeWord = FDKaacEnc_huff_ctab6[t0][t1]; |
| codeLength = |
| LO_LTAB(FDKaacEnc_huff_ltab5_6[t2][t3]); /* length of 2nd cw */ |
| codeWord = (codeWord << codeLength) + FDKaacEnc_huff_ctab6[t2][t3]; |
| codeLength += LO_LTAB(FDKaacEnc_huff_ltab5_6[t0][t1]); |
| FDKwriteBits(hBitstream, codeWord, codeLength); |
| } |
| break; |
| |
| case CODE_BOOK_7_NO: |
| for (i = 0; i < (width >> 1); i++) { |
| t0 = *values++; |
| sign = ((UINT)t0 >> 31); |
| t0 = fixp_abs(t0); |
| signLength = (t0 == 0) ? 0 : 1; |
| t1 = *values++; |
| INT zero = (t1 == 0) ? 0 : 1; |
| signLength += zero; |
| sign = (sign << zero) + ((UINT)t1 >> 31); |
| t1 = fixp_abs(t1); |
| codeWord = FDKaacEnc_huff_ctab7[t0][t1]; |
| codeLength = HI_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]); |
| FDKwriteBits(hBitstream, (codeWord << signLength) | sign, |
| codeLength + signLength); |
| } |
| break; |
| |
| case CODE_BOOK_8_NO: |
| for (i = 0; i < (width >> 1); i++) { |
| t0 = *values++; |
| sign = ((UINT)t0 >> 31); |
| t0 = fixp_abs(t0); |
| signLength = (t0 == 0) ? 0 : 1; |
| t1 = *values++; |
| INT zero = (t1 == 0) ? 0 : 1; |
| signLength += zero; |
| sign = (sign << zero) + ((UINT)t1 >> 31); |
| t1 = fixp_abs(t1); |
| codeWord = FDKaacEnc_huff_ctab8[t0][t1]; |
| codeLength = LO_LTAB(FDKaacEnc_huff_ltab7_8[t0][t1]); |
| FDKwriteBits(hBitstream, (codeWord << signLength) | sign, |
| codeLength + signLength); |
| } |
| break; |
| |
| case CODE_BOOK_9_NO: |
| for (i = 0; i < (width >> 1); i++) { |
| t0 = *values++; |
| sign = ((UINT)t0 >> 31); |
| t0 = fixp_abs(t0); |
| signLength = (t0 == 0) ? 0 : 1; |
| t1 = *values++; |
| INT zero = (t1 == 0) ? 0 : 1; |
| signLength += zero; |
| sign = (sign << zero) + ((UINT)t1 >> 31); |
| t1 = fixp_abs(t1); |
| codeWord = FDKaacEnc_huff_ctab9[t0][t1]; |
| codeLength = HI_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]); |
| FDKwriteBits(hBitstream, (codeWord << signLength) | sign, |
| codeLength + signLength); |
| } |
| break; |
| |
| case CODE_BOOK_10_NO: |
| for (i = 0; i < (width >> 1); i++) { |
| t0 = *values++; |
| sign = ((UINT)t0 >> 31); |
| t0 = fixp_abs(t0); |
| signLength = (t0 == 0) ? 0 : 1; |
| t1 = *values++; |
| INT zero = (t1 == 0) ? 0 : 1; |
| signLength += zero; |
| sign = (sign << zero) + ((UINT)t1 >> 31); |
| t1 = fixp_abs(t1); |
| codeWord = FDKaacEnc_huff_ctab10[t0][t1]; |
| codeLength = LO_LTAB(FDKaacEnc_huff_ltab9_10[t0][t1]); |
| FDKwriteBits(hBitstream, (codeWord << signLength) | sign, |
| codeLength + signLength); |
| } |
| break; |
| |
| case CODE_BOOK_ESC_NO: |
| for (i = 0; i < (width >> 1); i++) { |
| t0 = *values++; |
| sign = ((UINT)t0 >> 31); |
| t0 = fixp_abs(t0); |
| signLength = (t0 == 0) ? 0 : 1; |
| t1 = *values++; |
| INT zero = (t1 == 0) ? 0 : 1; |
| signLength += zero; |
| sign = (sign << zero) + ((UINT)t1 >> 31); |
| 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 << signLength) | sign, |
| codeLength + signLength); |
| for (int j = 0; j < 2; j++) { |
| if (t0 >= 16) { |
| INT n = 4, p = t0; |
| for (; (p >>= 1) >= 16;) n++; |
| FDKwriteBits(hBitstream, |
| (((1 << (n - 3)) - 2) << n) | (t0 - (1 << n)), |
| n + n - 3); |
| } |
| t0 = t1; |
| } |
| } |
| 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); |
| } |
