sbc_encoder.h

/******************************************************************************
 *
 * Copyright (C) 1999-2012 Broadcom Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ******************************************************************************/

/******************************************************************************
 *
 * This file contains constants and structures used by Encoder.
 *
 ******************************************************************************/

#ifndef SBC_ENCODER_H
#define SBC_ENCODER_H

#define ENCODER_VERSION "0025"

#ifdef BUILDCFG
 #include "bt_target.h"
#endif

/*DEFINES*/
#ifndef FALSE
#define FALSE 0
#endif

#ifndef TRUE
#define TRUE (!FALSE)
#endif

/* BK4BTSTACK_CHANGE START */
#define SBC_NO_PCM_CPY_OPTION TRUE
/* BK4BTSTACK_CHANGE END */

/* Added for Smart Remote 3 nRF52 */
#define SBC_JOINT_STE_INCLUDED FALSE

#define SBC_MAX_NUM_OF_SUBBANDS 8
/* Changed for Smart Remote 3 nRF52 (was: 2) */
#define SBC_MAX_NUM_OF_CHANNELS 1
#define SBC_MAX_NUM_OF_BLOCKS 16

#define SBC_LOUDNESS 0
#define SBC_SNR 1

#define SUB_BANDS_8 8
#define SUB_BANDS_4 4

#define SBC_sf16000 0
#define SBC_sf32000 1
#define SBC_sf44100 2
#define SBC_sf48000 3

#define SBC_MONO 0
#define SBC_DUAL 1
#define SBC_STEREO 2
#define SBC_JOINT_STEREO 3

#define SBC_BLOCK_0 4
#define SBC_BLOCK_1 8
#define SBC_BLOCK_2 12
#define SBC_BLOCK_3 16

#define SBC_NULL 0

#ifndef SBC_MAX_NUM_FRAME
#define SBC_MAX_NUM_FRAME 1
#endif

#ifndef SBC_DSP_OPT
#define SBC_DSP_OPT FALSE
#endif

/* Set SBC_USE_ARM_PRAGMA to TRUE to use "#pragma arm section zidata" */
#ifndef SBC_USE_ARM_PRAGMA
#define SBC_USE_ARM_PRAGMA FALSE
#endif

/* Set SBC_ARM_ASM_OPT to TRUE in case the target is an ARM */
/* this will replace all the 32 and 64 bit mult by in line assembly code */
#ifndef SBC_ARM_ASM_OPT
#define SBC_ARM_ASM_OPT FALSE
#endif

/* green hill compiler option -> Used to distinguish the syntax for inline assembly code*/
#ifndef SBC_GHS_COMPILER
#define SBC_GHS_COMPILER FALSE
#endif

/* ARM compiler option -> Used to distinguish the syntax for inline assembly code */
#ifndef SBC_ARM_COMPILER
#define SBC_ARM_COMPILER TRUE
#endif

/* Set SBC_IPAQ_OPT to TRUE in case the target is an ARM */
/* 32 and 64 bit mult will be performed using SINT64 ( usualy __int64 ) cast that usualy give optimal performance if supported */
#ifndef SBC_IPAQ_OPT
#define SBC_IPAQ_OPT TRUE
#endif

/* Debug only: set SBC_IS_64_MULT_IN_WINDOW_ACCU to TRUE to use 64 bit multiplication in the windowing */
/* -> not recomended, more MIPS for the same restitution. */
#ifndef SBC_IS_64_MULT_IN_WINDOW_ACCU
#define SBC_IS_64_MULT_IN_WINDOW_ACCU FALSE
#endif /*SBC_IS_64_MULT_IN_WINDOW_ACCU */

/* Set SBC_IS_64_MULT_IN_IDCT to TRUE to use 64 bits multiplication in the DCT of Matrixing */
/* -> more MIPS required for a better audio quality. comparasion with the SIG utilities shows a division by 10 of the RMS */
/* CAUTION: It only apply in the if SBC_FAST_DCT is set to TRUE */
#ifndef SBC_IS_64_MULT_IN_IDCT
#define SBC_IS_64_MULT_IN_IDCT FALSE
#endif /*SBC_IS_64_MULT_IN_IDCT */

/* set SBC_IS_64_MULT_IN_QUANTIZER to TRUE to use 64 bits multiplication in the quantizer */
/* setting this flag to FALSE add whistling noise at 5.5 and 11 KHz usualy not perceptible by human's hears. */
#ifndef SBC_IS_64_MULT_IN_QUANTIZER
#define SBC_IS_64_MULT_IN_QUANTIZER TRUE
#endif /*SBC_IS_64_MULT_IN_IDCT */

/* Debug only: set this flag to FALSE to disable fast DCT algorithm */
#ifndef SBC_FAST_DCT
#define SBC_FAST_DCT TRUE
#endif /*SBC_FAST_DCT */

/* In case we do not use joint stereo mode the flag save some RAM and ROM in case it is set to FALSE */
#ifndef SBC_JOINT_STE_INCLUDED
#define SBC_JOINT_STE_INCLUDED TRUE
#endif

/* TRUE -> application should provide PCM buffer, FALSE PCM buffer reside in SBC_ENC_PARAMS */
#ifndef SBC_NO_PCM_CPY_OPTION
#define SBC_NO_PCM_CPY_OPTION FALSE
#endif

#define MINIMUM_ENC_VX_BUFFER_SIZE (8*10*2)
#ifndef ENC_VX_BUFFER_SIZE
#define ENC_VX_BUFFER_SIZE (MINIMUM_ENC_VX_BUFFER_SIZE + 64)
/*#define ENC_VX_BUFFER_SIZE MINIMUM_ENC_VX_BUFFER_SIZE + 1024*/
#endif

#ifndef SBC_FOR_EMBEDDED_LINUX
#define SBC_FOR_EMBEDDED_LINUX FALSE
#endif

/*constants used for index calculation*/
#define SBC_BLK (SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS)

#include "sbc_types.h"

typedef struct SBC_ENC_PARAMS_TAG
{
 SINT16 s16SamplingFreq; /* 16k, 32k, 44.1k or 48k*/
 SINT16 s16ChannelMode; /* mono, dual, streo or joint streo*/
 SINT16 s16NumOfSubBands; /* 4 or 8 */
 SINT16 s16NumOfChannels;
 SINT16 s16NumOfBlocks; /* SBC: 4, 8, 12 or 16; mSBC: 15*/
 SINT16 s16AllocationMethod; /* loudness or SNR*/
 SINT16 s16BitPool; /* 16*numOfSb for mono & dual;
 32*numOfSb for stereo & joint stereo */
 /* BK4BTSTACK_CHANGE START */
 // UINT16 u16BitRate;
 /* BK4BTSTACK_CHANGE END */
 UINT8 u8NumPacketToEncode; /* number of sbc frame to encode. Default is 1 */
#if (SBC_JOINT_STE_INCLUDED == TRUE)
 SINT16 as16Join[SBC_MAX_NUM_OF_SUBBANDS]; /*1 if JS, 0 otherwise*/
#endif

 SINT16 s16MaxBitNeed;
 SINT16 as16ScaleFactor[SBC_MAX_NUM_OF_CHANNELS*SBC_MAX_NUM_OF_SUBBANDS];

 SINT16 *ps16NextPcmBuffer;
#if (SBC_NO_PCM_CPY_OPTION == TRUE)
 SINT16 *ps16PcmBuffer;
#else
 SINT16 as16PcmBuffer[SBC_MAX_NUM_FRAME*SBC_MAX_NUM_OF_BLOCKS * SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS];
#endif

 SINT16 s16ScartchMemForBitAlloc[16];

 SINT32 s32SbBuffer[SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS * SBC_MAX_NUM_OF_BLOCKS];

 SINT16 as16Bits[SBC_MAX_NUM_OF_CHANNELS*SBC_MAX_NUM_OF_SUBBANDS];

 UINT8 *pu8Packet;
 UINT8 *pu8NextPacket;
 UINT16 FrameHeader;
 UINT16 u16PacketLength;
 /* BK4BTSTACK_CHANGE START */
 UINT8 mSBCEnabled;
 /* BK4BTSTACK_CHANGE END */
}SBC_ENC_PARAMS;

#ifdef __cplusplus
extern "C"
{
#endif
SBC_API extern void SBC_Encoder(SBC_ENC_PARAMS *strEncParams);
SBC_API extern void SBC_Encoder_Init(SBC_ENC_PARAMS *strEncParams);
#ifdef __cplusplus
}
#endif
#endif