/*
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* Copyright (C) 2013 - 2016 Sony Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LDACBT_INTERNAL_H_
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#define _LDACBT_INTERNAL_H_
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <unistd.h>
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#include "struct_ldac.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Function declaration */
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#define DECLFUNC static
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/* Limit for alter EQMID process */
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#define LDACBT_LIMIT_ALTER_EQMID_PRIORITY LDACBT_EQMID_MQ
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#include "ldaclib.h"
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#include "ldacBT.h"
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#include "ldacBT_ex.h"
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/* macro value */
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/* The size of LDAC transport header. Unit:Byte. */
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#define LDACBT_FRMHDRBYTES LDAC_FRMHDRBYTES
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/* The Maximum number of frames that can transrate in one packet.(LDAC A2DP spec) */
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#define LDACBT_NFRM_TX_MAX 15
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/* Lowest Common Multiple of (2,3,4)Bytes * 2ch * 256samples */
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#define LDACBT_ENC_PCM_BUF_SZ 6144
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/* The maximum pcm word length allowed. Unit:Byte */
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#define LDACBT_PCM_WLEN_MAX 4
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/* The size of LDACBT_TRANSPORT_FRM_BUF's buffer. Unit:Byte */
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#define LDACBT_ENC_STREAM_BUF_SZ 1024
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/* The size of rtp header and so on. Unit:Byte */
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/* = sizeof(struct rtp_header) + sizeof(struct rtp_payload) + 1 (scms-t). */
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#define LDACBT_TX_HEADER_SIZE 18
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/* The MTU size required for LDAC A2DP streaming. */
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#define LDACBT_MTU_REQUIRED 679
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#define LDACBT_MTU_3DH5 (990+LDACBT_TX_HEADER_SIZE)
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/* The state for alter operation */
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#define LDACBT_ALTER_OP__NON 0
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#define LDACBT_ALTER_OP__ACTIVE 1
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#define LDACBT_ALTER_OP__STANDBY 2
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#define LDACBT_ALTER_OP__FLASH 9
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/* other */
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#ifndef LDACBT_S_OK
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#define LDACBT_S_OK (0)
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#endif
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#ifndef LDACBT_E_FAIL
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#define LDACBT_E_FAIL (-1)
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef UNSET
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#define UNSET -1
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#endif
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#define LDACBT_GET_LDACLIB_ERROR_CODE 9999
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/* The index for A2DP packets */
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enum {
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___DH1, ___DH3, ___DH5, /* basic rate */
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_2_DH1, _2_DH3, _2_DH5, /* EDR2M */
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_3_DH1, _3_DH3, _3_DH5, /* EDR3M */
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};
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/* The state for LDACBT handle processing mode. */
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typedef enum {
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LDACBT_PROCMODE_UNSET = -1,
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LDACBT_PROCMODE_ENCODE = 1,
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LDACBT_PROCMODE_DECODE = 2,
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} LDACBT_PROCMODE;
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/* Structs */
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/* The structure for the property of EQMID. */
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typedef struct _st_ldacbt_eqmid_property
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{
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int eqmid;
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char strModeName[4];
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int id_for_2DH5;
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} LDACBT_EQMID_PROPERTY, * P_LDACBT_EQMID_PROPERTY;
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/* The structure for the configuration of LDAC. */
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typedef struct _st_ldacbt_config
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{
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int id;
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int nfrm_in_pkt; /* number of ldac frame in packet */
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int frmlen; /* ldac frame length */
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int frmlen_1ch; /* ldac frame length per channel */
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} LDACBT_CONFIG, * P_LDACBT_CONFIG;
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/* The structure for the pcm information. */
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typedef struct _ldacbt_pcm_info {
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int sf; /* sampling frequency */
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int ch; /* number of channel */
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int wl;
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LDACBT_SMPL_FMT_T fmt; /* sample format */
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} LDACBT_PCM_INFO;
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/* The structure for the A2DP streaming. */
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typedef struct _ldacbt_tx_info {
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int mtu;
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int tx_size; /* size for ldac stream */
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int pkt_type; /* packet type */
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int pkt_hdr_sz; /* packet header size */
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int nfrm_in_pkt; /* number of ldac frame in packet */
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} LDACBT_TX_INFO;
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/* The structure for the ldac_transport_frame sequence. */
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typedef struct _ldacbt_transport_frame_buf {
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unsigned char buf[LDACBT_ENC_STREAM_BUF_SZ];
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int used;
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int nfrm_in;
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} LDACBT_TRANSPORT_FRM_BUF;
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/* The structure of ring buffer for the input PCM. */
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typedef struct _ldacbt_pcm_ring_buf {
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char buf[LDACBT_ENC_PCM_BUF_SZ];
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int wp;
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int rp;
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int nsmpl;
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} LDACBT_PCM_RING_BUF;
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/* The LDACBT handle. */
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typedef struct _st_ldacbt_handle {
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HANDLE_LDAC hLDAC;
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LDACBT_PROCMODE proc_mode;
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int error_code;
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int error_code_api;
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/* common */
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/* pcm */
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LDACBT_PCM_INFO pcm;
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/* tx */
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LDACBT_TX_INFO tx;
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/* ldaclib config */
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int frm_samples; /* frame samples */
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int sfid; /* sampling frequency index */
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int nshift;
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int flg_encode_flushed;
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int frm_status;
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int frmlen; /* Frame Length */
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int frmlen_tx; /* Frame Length with transport header */
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int bitrate;
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int eqmid; /* Encode Quality Mode Index */
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/* for alter frame length */
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int tgt_eqmid; /* target Encode Quality Mode Index */
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int tgt_nfrm_in_pkt;/* target number of frame in packet */
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int tgt_frmlen; /* target frame length */
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int stat_alter_op; /* status of alter operation */
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int cm; /* Channel Mode */
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int cci; /* Channel Config Index */
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int transport; /* Transport Stream ( with frame header) */
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/* buffer for "ldac_transport_frame" sequence */
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LDACBT_TRANSPORT_FRM_BUF ldac_trns_frm_buf;
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/* buffer for input pcm */
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LDACBT_PCM_RING_BUF pcmring;
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/* work buffer for LDACLIB I/O */
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char **pp_pcm;
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char *ap_pcm[LDAC_PRCNCH];
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char a_pcm[LDAC_PRCNCH * LDACBT_MAX_LSU * LDACBT_PCM_WLEN_MAX];
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} STRUCT_LDACBT_HANDLE;
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/* subfunctions */
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DECLFUNC void ldacBT_param_clear(HANDLE_LDAC_BT hLdacBT);
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DECLFUNC int ldacBT_check_ldaclib_error_code(HANDLE_LDAC_BT hLdacBT);
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DECLFUNC int ldacBT_assert_cm( int cm );
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DECLFUNC int ldacBT_assert_cci( int cci );
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DECLFUNC int ldacBT_assert_sample_format( LDACBT_SMPL_FMT_T fmt );
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DECLFUNC int ldacBT_assert_pcm_sampling_freq( int sf );
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DECLFUNC int ldacBT_assert_mtu( int mtu );
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DECLFUNC int ldacBT_assert_eqmid( int eqmid );
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DECLFUNC void ldacBT_set_eqmid_core( HANDLE_LDAC_BT hLdacBT, int eqmid );
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DECLFUNC void ldacBT_prepare_pcm_encode( void *pbuff, char **ap_pcm, int nsmpl, int nch,
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LDACBT_SMPL_FMT_T fmt );
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DECLFUNC int ldacBT_frmlen_to_bitrate( int frmlen, int flgFrmHdr, int sf, int frame_samples );
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DECLFUNC int ldacBT_cm_to_cci( int cm );
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DECLFUNC int ldacBT_cci_to_cm( int cci );
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DECLFUNC int ldacBT_get_altered_eqmid ( HANDLE_LDAC_BT hLdacBT, int priority );
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DECLFUNC int ldacBT_get_eqmid_from_frmlen( int frmlen, int nch, int flgFrmHdr, int pktType );
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DECLFUNC int ldacBT_update_frmlen(HANDLE_LDAC_BT hLdacBT, int frmlen);
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DECLFUNC P_LDACBT_EQMID_PROPERTY ldacBT_get_eqmid_conv_tbl ( int ldac_bt_mode );
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DECLFUNC P_LDACBT_CONFIG ldacBT_get_config( int ldac_bt_mode, int pkt_type );
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LDACBT_INTERNAL_H_ */
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