1 /****************************************************************************** 2 * 3 * Copyright 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 #include "bt_target.h" 31 32 /*DEFINES*/ 33 #ifndef FALSE 34 #define FALSE 0 35 #endif 36 37 #ifndef TRUE 38 #define TRUE (!FALSE) 39 #endif 40 41 #define SBC_MAX_NUM_OF_SUBBANDS 8 42 #define SBC_MAX_NUM_OF_CHANNELS 2 43 #define SBC_MAX_NUM_OF_BLOCKS 16 44 45 #define SBC_LOUDNESS 0 46 #define SBC_SNR 1 47 48 #define SUB_BANDS_8 8 49 #define SUB_BANDS_4 4 50 51 #define SBC_sf16000 0 52 #define SBC_sf32000 1 53 #define SBC_sf44100 2 54 #define SBC_sf48000 3 55 56 #define SBC_MONO 0 57 #define SBC_DUAL 1 58 #define SBC_STEREO 2 59 #define SBC_JOINT_STEREO 3 60 61 #define SBC_BLOCK_0 4 62 #define SBC_BLOCK_1 8 63 #define SBC_BLOCK_2 12 64 #define SBC_BLOCK_3 16 65 66 #define SBC_NULL 0 67 68 #ifndef SBC_MAX_NUM_FRAME 69 #define SBC_MAX_NUM_FRAME 1 70 #endif 71 72 #ifndef SBC_DSP_OPT 73 #define SBC_DSP_OPT FALSE 74 #endif 75 76 /* Set SBC_USE_ARM_PRAGMA to TRUE to use "#pragma arm section zidata" */ 77 #ifndef SBC_USE_ARM_PRAGMA 78 #define SBC_USE_ARM_PRAGMA FALSE 79 #endif 80 81 /* Set SBC_ARM_ASM_OPT to TRUE in case the target is an ARM */ 82 /* this will replace all the 32 and 64 bit mult by in line assembly code */ 83 #ifndef SBC_ARM_ASM_OPT 84 #define SBC_ARM_ASM_OPT FALSE 85 #endif 86 87 /* green hill compiler option -> Used to distinguish the syntax for inline 88 * assembly code 89 */ 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 95 * code */ 96 #ifndef SBC_ARM_COMPILER 97 #define SBC_ARM_COMPILER TRUE 98 #endif 99 100 /* Set SBC_IPAQ_OPT to TRUE in case the target is an ARM */ 101 /* 32 and 64 bit mult will be performed using int64_t ( usualy __int64 ) cast 102 * that usualy give optimal performance if supported 103 */ 104 #ifndef SBC_IPAQ_OPT 105 #define SBC_IPAQ_OPT TRUE 106 #endif 107 108 /* Debug only: set SBC_IS_64_MULT_IN_WINDOW_ACCU to TRUE to use 64 bit 109 * multiplication in the windowing 110 */ 111 /* -> not recomended, more MIPS for the same restitution. */ 112 #ifndef SBC_IS_64_MULT_IN_WINDOW_ACCU 113 #define SBC_IS_64_MULT_IN_WINDOW_ACCU FALSE 114 #endif /*SBC_IS_64_MULT_IN_WINDOW_ACCU */ 115 116 /* Set SBC_IS_64_MULT_IN_IDCT to TRUE to use 64 bits multiplication in the DCT 117 * of Matrixing 118 */ 119 /* -> more MIPS required for a better audio quality. comparasion with the SIG 120 * utilities shows a division by 10 of the RMS 121 */ 122 /* CAUTION: It only apply in the if SBC_FAST_DCT is set to TRUE */ 123 #ifndef SBC_IS_64_MULT_IN_IDCT 124 #define SBC_IS_64_MULT_IN_IDCT FALSE 125 #endif /*SBC_IS_64_MULT_IN_IDCT */ 126 127 /* set SBC_IS_64_MULT_IN_QUANTIZER to TRUE to use 64 bits multiplication in the 128 * quantizer 129 */ 130 /* setting this flag to FALSE adds a whistling noise at 5.5 and 11 KHz usualy 131 * not perceptible by human's hears. */ 132 #ifndef SBC_IS_64_MULT_IN_QUANTIZER 133 #define SBC_IS_64_MULT_IN_QUANTIZER TRUE 134 #endif /*SBC_IS_64_MULT_IN_IDCT */ 135 136 /* Debug only: set this flag to FALSE to disable fast DCT algorithm */ 137 #ifndef SBC_FAST_DCT 138 #define SBC_FAST_DCT TRUE 139 #endif /*SBC_FAST_DCT */ 140 141 /* In case we do not use joint stereo mode the flag save some RAM and ROM in 142 * case it is set to FALSE */ 143 #ifndef SBC_JOINT_STE_INCLUDED 144 #define SBC_JOINT_STE_INCLUDED TRUE 145 #endif 146 147 #define MINIMUM_ENC_VX_BUFFER_SIZE (8 * 10 * 2) 148 #ifndef ENC_VX_BUFFER_SIZE 149 #define ENC_VX_BUFFER_SIZE (MINIMUM_ENC_VX_BUFFER_SIZE + 64) 150 /*#define ENC_VX_BUFFER_SIZE MINIMUM_ENC_VX_BUFFER_SIZE + 1024*/ 151 #endif 152 153 /*constants used for index calculation*/ 154 #define SBC_BLK (SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS) 155 156 #define SBC_MAX_PCM_BUFFER_SIZE \ 157 (SBC_MAX_NUM_FRAME * SBC_MAX_NUM_OF_BLOCKS * SBC_MAX_NUM_OF_CHANNELS * \ 158 SBC_MAX_NUM_OF_SUBBANDS) 159 160 #include "sbc_types.h" 161 162 typedef struct SBC_ENC_PARAMS_TAG { 163 int16_t s16SamplingFreq; /* 16k, 32k, 44.1k or 48k*/ 164 int16_t s16ChannelMode; /* mono, dual, streo or joint streo*/ 165 int16_t s16NumOfSubBands; /* 4 or 8 */ 166 int16_t s16NumOfChannels; 167 int16_t s16NumOfBlocks; /* 4, 8, 12 or 16*/ 168 int16_t s16AllocationMethod; /* loudness or SNR*/ 169 int16_t s16BitPool; /* 16*numOfSb for mono & dual; 170 32*numOfSb for stereo & joint stereo */ 171 uint16_t u16BitRate; 172 #if (SBC_JOINT_STE_INCLUDED == TRUE) 173 int16_t as16Join[SBC_MAX_NUM_OF_SUBBANDS]; /*1 if JS, 0 otherwise*/ 174 #endif 175 176 int16_t s16MaxBitNeed; 177 int16_t as16ScaleFactor[SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS]; 178 179 int16_t s16ScartchMemForBitAlloc[16]; 180 181 int32_t s32SbBuffer[SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS * 182 SBC_MAX_NUM_OF_BLOCKS]; 183 184 int16_t as16Bits[SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS]; 185 186 uint16_t FrameHeader; 187 188 } SBC_ENC_PARAMS; 189 190 #ifdef __cplusplus 191 extern "C" { 192 #endif 193 194 /* Encode the frame using SBC. The output is written into |output|. Return 195 * number of bytes written. */ 196 extern uint32_t SBC_Encode(SBC_ENC_PARAMS* strEncParams, int16_t* input, 197 uint8_t* output); 198 extern void SBC_Encoder_Init(SBC_ENC_PARAMS* strEncParams); 199 200 #ifdef __cplusplus 201 } 202 #endif 203 204 #endif /* SBC_ENCODER_H */ 205