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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 1999-2012 Broadcom Corporation
      4  *
      5  *  Licensed under the Apache License, Version 2.0 (the "License");
      6  *  you may not use this file except in compliance with the License.
      7  *  You may obtain a copy of the License at:
      8  *
      9  *  http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  *
     17  ******************************************************************************/
     18 
     19 /******************************************************************************
     20  *
     21  *  This file contains constants and structures used by Encoder.
     22  *
     23  ******************************************************************************/
     24 
     25 #ifndef SBC_ENCODER_H
     26 #define SBC_ENCODER_H
     27 
     28 #define ENCODER_VERSION "0025"
     29 
     30 #ifdef BUILDCFG
     31     #include "bt_target.h"
     32 #endif
     33 
     34 /*DEFINES*/
     35 #ifndef FALSE
     36 #define FALSE 0
     37 #endif
     38 
     39 #ifndef TRUE
     40 #define TRUE (!FALSE)
     41 #endif
     42 
     43 #define SBC_MAX_NUM_OF_SUBBANDS 8
     44 #define SBC_MAX_NUM_OF_CHANNELS 2
     45 #define SBC_MAX_NUM_OF_BLOCKS   16
     46 
     47 #define SBC_LOUDNESS    0
     48 #define SBC_SNR 1
     49 
     50 #define SUB_BANDS_8 8
     51 #define SUB_BANDS_4 4
     52 
     53 #define SBC_sf16000 0
     54 #define SBC_sf32000 1
     55 #define SBC_sf44100 2
     56 #define SBC_sf48000 3
     57 
     58 #define SBC_MONO    0
     59 #define SBC_DUAL    1
     60 #define SBC_STEREO  2
     61 #define SBC_JOINT_STEREO    3
     62 
     63 #define SBC_BLOCK_0 4
     64 #define SBC_BLOCK_1 8
     65 #define SBC_BLOCK_2 12
     66 #define SBC_BLOCK_3 16
     67 
     68 #define SBC_NULL    0
     69 
     70 #ifndef SBC_MAX_NUM_FRAME
     71 #define SBC_MAX_NUM_FRAME 1
     72 #endif
     73 
     74 #ifndef SBC_DSP_OPT
     75 #define SBC_DSP_OPT FALSE
     76 #endif
     77 
     78 /* Set SBC_USE_ARM_PRAGMA to TRUE to use "#pragma arm section zidata" */
     79 #ifndef SBC_USE_ARM_PRAGMA
     80 #define SBC_USE_ARM_PRAGMA FALSE
     81 #endif
     82 
     83 /* Set SBC_ARM_ASM_OPT to TRUE in case the target is an ARM */
     84 /* this will replace all the 32 and 64 bit mult by in line assembly code */
     85 #ifndef SBC_ARM_ASM_OPT
     86 #define SBC_ARM_ASM_OPT FALSE
     87 #endif
     88 
     89 /* green hill compiler option -> Used to distinguish the syntax for inline assembly code*/
     90 #ifndef SBC_GHS_COMPILER
     91 #define SBC_GHS_COMPILER FALSE
     92 #endif
     93 
     94 /* ARM compiler option -> Used to distinguish the syntax for inline assembly code */
     95 #ifndef SBC_ARM_COMPILER
     96 #define SBC_ARM_COMPILER TRUE
     97 #endif
     98 
     99 /* Set SBC_IPAQ_OPT to TRUE in case the target is an ARM */
    100 /* 32 and 64 bit mult will be performed using SINT64 ( usualy __int64 ) cast that usualy give optimal performance if supported */
    101 #ifndef SBC_IPAQ_OPT
    102 #define SBC_IPAQ_OPT TRUE
    103 #endif
    104 
    105 /* Debug only: set SBC_IS_64_MULT_IN_WINDOW_ACCU to TRUE to use 64 bit multiplication in the windowing */
    106 /* -> not recomended, more MIPS for the same restitution.  */
    107 #ifndef SBC_IS_64_MULT_IN_WINDOW_ACCU
    108 #define SBC_IS_64_MULT_IN_WINDOW_ACCU  FALSE
    109 #endif /*SBC_IS_64_MULT_IN_WINDOW_ACCU */
    110 
    111 /* Set SBC_IS_64_MULT_IN_IDCT to TRUE to use 64 bits multiplication in the DCT of Matrixing */
    112 /* -> more MIPS required for a better audio quality. comparasion with the SIG utilities shows a division by 10 of the RMS */
    113 /* CAUTION: It only apply in the if SBC_FAST_DCT is set to TRUE */
    114 #ifndef SBC_IS_64_MULT_IN_IDCT
    115 #define SBC_IS_64_MULT_IN_IDCT  FALSE
    116 #endif /*SBC_IS_64_MULT_IN_IDCT */
    117 
    118 /* set SBC_IS_64_MULT_IN_QUANTIZER to TRUE to use 64 bits multiplication in the quantizer */
    119 /* setting this flag to FALSE add whistling noise at 5.5 and 11 KHz usualy not perceptible by human's hears. */
    120 #ifndef SBC_IS_64_MULT_IN_QUANTIZER
    121 #define SBC_IS_64_MULT_IN_QUANTIZER  TRUE
    122 #endif /*SBC_IS_64_MULT_IN_IDCT */
    123 
    124 /* Debug only: set this flag to FALSE to disable fast DCT algorithm */
    125 #ifndef SBC_FAST_DCT
    126 #define SBC_FAST_DCT  TRUE
    127 #endif /*SBC_FAST_DCT */
    128 
    129 /* In case we do not use joint stereo mode the flag save some RAM and ROM in case it is set to FALSE */
    130 #ifndef SBC_JOINT_STE_INCLUDED
    131 #define SBC_JOINT_STE_INCLUDED TRUE
    132 #endif
    133 
    134 /* TRUE -> application should provide PCM buffer, FALSE PCM buffer reside in SBC_ENC_PARAMS */
    135 #ifndef SBC_NO_PCM_CPY_OPTION
    136 #define SBC_NO_PCM_CPY_OPTION FALSE
    137 #endif
    138 
    139 #define MINIMUM_ENC_VX_BUFFER_SIZE (8*10*2)
    140 #ifndef ENC_VX_BUFFER_SIZE
    141 #define ENC_VX_BUFFER_SIZE (MINIMUM_ENC_VX_BUFFER_SIZE + 64)
    142 /*#define ENC_VX_BUFFER_SIZE MINIMUM_ENC_VX_BUFFER_SIZE + 1024*/
    143 #endif
    144 
    145 #ifndef SBC_FOR_EMBEDDED_LINUX
    146 #define SBC_FOR_EMBEDDED_LINUX FALSE
    147 #endif
    148 
    149 /*constants used for index calculation*/
    150 #define SBC_BLK (SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS)
    151 
    152 #include "sbc_types.h"
    153 
    154 typedef struct SBC_ENC_PARAMS_TAG
    155 {
    156     SINT16 s16SamplingFreq;                         /* 16k, 32k, 44.1k or 48k*/
    157     SINT16 s16ChannelMode;                          /* mono, dual, streo or joint streo*/
    158     SINT16 s16NumOfSubBands;                        /* 4 or 8 */
    159     SINT16 s16NumOfChannels;
    160     SINT16 s16NumOfBlocks;                          /* 4, 8, 12 or 16*/
    161     SINT16 s16AllocationMethod;                     /* loudness or SNR*/
    162     SINT16 s16BitPool;                              /* 16*numOfSb for mono & dual;
    163                                                        32*numOfSb for stereo & joint stereo */
    164     UINT16 u16BitRate;
    165     UINT8   u8NumPacketToEncode;                    /* number of sbc frame to encode. Default is 1 */
    166 #if (SBC_JOINT_STE_INCLUDED == TRUE)
    167     SINT16 as16Join[SBC_MAX_NUM_OF_SUBBANDS];       /*1 if JS, 0 otherwise*/
    168 #endif
    169 
    170     SINT16 s16MaxBitNeed;
    171     SINT16 as16ScaleFactor[SBC_MAX_NUM_OF_CHANNELS*SBC_MAX_NUM_OF_SUBBANDS];
    172 
    173     SINT16 *ps16NextPcmBuffer;
    174 #if (SBC_NO_PCM_CPY_OPTION == TRUE)
    175     SINT16 *ps16PcmBuffer;
    176 #else
    177     SINT16 as16PcmBuffer[SBC_MAX_NUM_FRAME*SBC_MAX_NUM_OF_BLOCKS * SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS];
    178 #endif
    179 
    180     SINT16  s16ScartchMemForBitAlloc[16];
    181 
    182     SINT32  s32SbBuffer[SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS * SBC_MAX_NUM_OF_BLOCKS];
    183 
    184     SINT16 as16Bits[SBC_MAX_NUM_OF_CHANNELS*SBC_MAX_NUM_OF_SUBBANDS];
    185 
    186     UINT8  *pu8Packet;
    187     UINT8  *pu8NextPacket;
    188     UINT16 FrameHeader;
    189     UINT16 u16PacketLength;
    190 
    191 }SBC_ENC_PARAMS;
    192 
    193 #ifdef __cplusplus
    194 extern "C"
    195 {
    196 #endif
    197 extern void SBC_Encoder(SBC_ENC_PARAMS *strEncParams);
    198 extern void SBC_Encoder_Init(SBC_ENC_PARAMS *strEncParams);
    199 #ifdef __cplusplus
    200 }
    201 #endif
    202 #endif
    203