#ifndef __MSBC_DECODER_PORT_H_
#define __MSBC_DECODER_PORT_H_

#include "oi_codec_sbc.h"
#include <stdint.h>


#define DECODER_DATA_SIZE (SBC_MAX_CHANNELS*SBC_MAX_BLOCKS*SBC_MAX_BANDS * 4 + \
            SBC_CODEC_MIN_FILTER_BUFFERS*SBC_MAX_BANDS*SBC_MAX_CHANNELS * 2)

#define SBC_FS 120          /* SBC Frame Size */
#define SBC_N 512           /* 32ms - Window Length for pattern matching */ 
#define SBC_M 64            /* 4ms - Template for matching */
#define SBC_LHIST (SBC_N+SBC_FS-1)  /* Length of history buffer required */ 
#define SBC_RT 36           /* SBC Reconvergence Time (samples) */
#define SBC_OLAL 16         /* OverLap-Add Length (samples) */

#define mSBC_SYNCWORD 0xad

static float rcos[8] = {
    0.99148655f,0.92510857f,
    0.80131732f,0.63683150f, 
    0.45386582f,0.27713082f, 
    0.13049554f,0.03376389f,
};

/* PLC State Information */
struct sbc_plc_state {
    int16_t hist[SBC_LHIST+SBC_FS+SBC_RT+SBC_OLAL];
    int16_t bestlag;
    int     nbf;

    // summary of processed good and bad frames
    int good_frames_nr;
    int bad_frames_nr;
    int frame_count;
    int max_consecutive_bad_frames_nr;
} __attribute__((packed));


struct sbc_decoder_state {
    void *context;
    struct sbc_plc_state plc_state;
    void (*handle_pcm_data)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context);
    uint32_t bytes_in_frame_buffer;
    OI_CODEC_SBC_DECODER_CONTEXT decoder_context;

    uint8_t   frame_buffer[SBC_MAX_FRAME_LEN];
    int16_t   pcm_plc_data[SBC_MAX_CHANNELS * SBC_MAX_BANDS * SBC_MAX_BLOCKS];
    int16_t   pcm_data[SBC_MAX_CHANNELS * SBC_MAX_BANDS * SBC_MAX_BLOCKS];
    uint32_t  pcm_bytes;
    uint32_t decoder_data[(DECODER_DATA_SIZE+3)/4];
    int       first_good_frame_found;
    int       h2_sequence_nr;
    uint16_t  msbc_bad_bytes;

    // summary of processed good, bad and zero frames
    int good_frames_nr;
    int bad_frames_nr;
    int zero_frames_nr;
};

typedef void (*msbc_decoder_data_cb)(int16_t * data, int num_samples,int num_channels,
                int sample_rate, void * context);


void msbc_decoder_process_msbc_data(int packet_status_flag, uint8_t * buffer, int size);
int msbc_decoder_init(msbc_decoder_data_cb cb);

#endif