/*
 * Copyright (c) Hisilicon Technologies Co., Ltd. 2012-2019. All rights reserved.
 * Description: IEC61937 data parser function
 * Author: audio
 * Create: 2012-05-30
 */

#ifndef __IEC61937_PARSER_H__
#define __IEC61937_PARSER_H__

#include "drv_audio_ext.h"

#ifdef __cplusplus
extern "C" {
#endif /* __cpluscplus */

typedef td_void *ext_parser_handle;

/* the repetition period between 2 data-burst of AC3, also indicate the out buffer length */
#define BITS_BURSTLENGTH_AC3  (1536 * 4)
#define BITS_BURSTLENGTH_EAC3 (1536 * 4 * 4)

/* the repetition period between 2 data-burst of MAT, also indicate the out buffer length */
#define BITS_BURSTLENGTH_TUREHD 61440
#define BITS_BURSTLENGTH_MAT    61440

/* the repetition period between 2 data-burst of DTS, also indicate the out buffer length */
#define BITS_BURSTLENGTH_DTS_TYPE_I   (512 * 4)
#define BITS_BURSTLENGTH_DTS_TYPE_II  (1024 * 4)
#define BITS_BURSTLENGTH_DTS_TYPE_III (2048 * 4)
#define BITS_BURSTLENGTH_DTSCD        (1024 * 4)
#define BITS_BURSTLENGTH_DTSHD         32768

/* the length of burst-preamble */
#define LENGTH_OF_PREAMBLE  8
#define LENGTH_OF_PA_AND_PB 4

#define DTSHD_HEADER_SIZE 12

#define IEC61937_SYNCWORD_LE 0xF8724E1F
#define IEC61937_SYNCWORD_BE 0x72F81F4E

/* * DCA syncwords, also used for bitstream type detection */
#define DCA_MARKER_RAW_BE 0x7FFE8001
#define DCA_MARKER_RAW_LE 0xFE7F0180
#define DCA_MARKER_14B_BE 0x1FFFE800
#define DCA_MARKER_14B_LE 0xFF1F00E8

#define IEC61937_PARSER_LENGTH_MIN 6 /* sizeof(pa + pb + pc) */
#define IEC61937_PARSER_LENGTH_MAX (BITS_BURSTLENGTH_MAT + IEC61937_PARSER_LENGTH_MIN)

/* the data type code, see IEC61917-2 */
#define IEC61937_DATATYPE_NULL         0    /* null data */
#define IEC61937_DATATYPE_AC3          1    /* AC-3 data */
#define IEC61937_DATATYPE_PAUSE        3    /* pause */
#define IEC61937_DATATYPE_DTS_TYPE_I   11   /* DTS type 1 */
#define IEC61937_DATATYPE_DTS_TYPE_II  12   /* DTS type 2 */
#define IEC61937_DATATYPE_DTS_TYPE_III 13   /* DTS type 3 */
#define IEC61937_DATATYPE_DTS_TYPE_IV  17   /* DTS type 4 */
#define IEC61937_DATATYPE_EAC3         21   /* enhanced AC-3 */
#define IEC61937_DATATYPE_MAT          22   /* MAT(true HD) */
#define IEC61937_DATATYPE_DTSCD        0xff /* DTS CD */

typedef enum {
    IEC61937_PARSER_STREAM_PCM = EXT_AUDIO_FORMAT_PCM,
    IEC61937_PARSER_STREAM_DD = EXT_AUDIO_FORMAT_AC3,
    IEC61937_PARSER_STREAM_DDP = EXT_AUDIO_FORMAT_EAC3,
    IEC61937_PARSER_STREAM_DTS = EXT_AUDIO_FORMAT_DTS,
    IEC61937_PARSER_STREAM_DTSHD = EXT_AUDIO_FORMAT_DTS_HD,
    IEC61937_PARSER_STREAM_MAT = EXT_AUDIO_FORMAT_MAT,
    IEC61937_PARSER_STREAM_UNKNOWN = EXT_AUDIO_FORMAT_STREAM,
    IEC61937_PARSER_STREAM_TYPE_MAX = EXT_AUDIO_FORMAT_CXT,
} iec61937_parser_stream_type;

typedef struct {
    td_u8 *data;
    td_u32 size;
} iec61937_parser_stream_buf;

typedef struct {
    td_u8 *buffer;
    td_u32 alloc_len;
    td_u32 free_len;
    td_u32 filled_len;
    td_u32 burst_len;
    td_u32 total_discard_len;
    td_bool frame_is_ready;
    td_bool big_endian;
    td_u32 first_empty_time;
    td_u32 frame_len;
    td_u8 *frame_buf;
    td_u32 channel;
    td_u32 bit_depth;
    iec61937_parser_stream_type stream_type;
} iec61937_parser_state;

td_s32 iec61937_parser_create(ext_parser_handle *parser);
td_void iec61937_parser_destroy(ext_parser_handle parser);
td_s32 iec61937_parser_get_buf(ext_parser_handle parser,
    td_u32 request_size, iec61937_parser_stream_buf *stream);
td_s32 iec61937_parser_put_buf(ext_parser_handle parser, iec61937_parser_stream_buf *stream);
td_s32 iec61937_parser_acquire_frame(ext_parser_handle parser, td_void *dst_buf, td_u32 *frame_len);
td_s32 iec61937_parser_release_frame(ext_parser_handle parser, td_u32 frame_len);
td_s32 iec61937_parser_get_stream_type(ext_parser_handle parser, iec61937_parser_stream_type *stream_type);
td_s32 iec61937_parser_get_burst_len(ext_parser_handle parser, td_u32 *burst_len);
td_bool iec61937_check_is_empty(ext_parser_handle parser);

#ifdef __cplusplus
}
#endif /* __cpluscplus */

#endif /* __IEC61937_PARSER_H__ */