moyuhai
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
#ifndef __MSBC_DECODER_PORT_H_
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#define __MSBC_DECODER_PORT_H_
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#include "oi_codec_sbc.h"
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#include <stdint.h>
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#define DECODER_DATA_SIZE (SBC_MAX_CHANNELS*SBC_MAX_BLOCKS*SBC_MAX_BANDS * 4 + \
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SBC_CODEC_MIN_FILTER_BUFFERS*SBC_MAX_BANDS*SBC_MAX_CHANNELS * 2)
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#define SBC_FS 120 /* SBC Frame Size */
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#define SBC_N 512 /* 32ms - Window Length for pattern matching */
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#define SBC_M 64 /* 4ms - Template for matching */
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#define SBC_LHIST (SBC_N+SBC_FS-1) /* Length of history buffer required */
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#define SBC_RT 36 /* SBC Reconvergence Time (samples) */
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#define SBC_OLAL 16 /* OverLap-Add Length (samples) */
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#define mSBC_SYNCWORD 0xad
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static float rcos[8] = {
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0.99148655f,0.92510857f,
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0.80131732f,0.63683150f,
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0.45386582f,0.27713082f,
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0.13049554f,0.03376389f,
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};
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/* PLC State Information */
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struct sbc_plc_state {
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int16_t hist[SBC_LHIST+SBC_FS+SBC_RT+SBC_OLAL];
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int16_t bestlag;
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int nbf;
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// summary of processed good and bad frames
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int good_frames_nr;
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int bad_frames_nr;
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int frame_count;
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int max_consecutive_bad_frames_nr;
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} __attribute__((packed));
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struct sbc_decoder_state {
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void *context;
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struct sbc_plc_state plc_state;
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void (*handle_pcm_data)(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context);
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uint32_t bytes_in_frame_buffer;
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OI_CODEC_SBC_DECODER_CONTEXT decoder_context;
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uint8_t frame_buffer[SBC_MAX_FRAME_LEN];
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int16_t pcm_plc_data[SBC_MAX_CHANNELS * SBC_MAX_BANDS * SBC_MAX_BLOCKS];
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int16_t pcm_data[SBC_MAX_CHANNELS * SBC_MAX_BANDS * SBC_MAX_BLOCKS];
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uint32_t pcm_bytes;
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uint32_t decoder_data[(DECODER_DATA_SIZE+3)/4];
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int first_good_frame_found;
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int h2_sequence_nr;
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uint16_t msbc_bad_bytes;
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// summary of processed good, bad and zero frames
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int good_frames_nr;
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int bad_frames_nr;
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int zero_frames_nr;
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};
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typedef void (*msbc_decoder_data_cb)(int16_t * data, int num_samples,int num_channels,
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int sample_rate, void * context);
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void msbc_decoder_process_msbc_data(int packet_status_flag, uint8_t * buffer, int size);
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int msbc_decoder_init(msbc_decoder_data_cb cb);
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#endif
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