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Improvement: LTPF now work on decoded ring buffer

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Antoine SOULIER
2022-04-20 14:52:49 +02:00
parent 6f2b25df8a
commit c3831b7b24
8 changed files with 142 additions and 96 deletions
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14
include/lc3_private.h
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@@ -26,7 +26,7 @@
/**
* Return number of samples, delayed samples and
* encoded spectrum coefficients within a frame
* For decoding, add number of samples of 18 ms history
* For decoding, keep 18 ms of history, aligned on frames, and a frame
*/
#define __LC3_NS(dt_us, sr_hz) \
@@ -36,8 +36,8 @@
( (dt_us) == 7500 ? 23 * __LC3_NS(dt_us, sr_hz) / 30 \
: 5 * __LC3_NS(dt_us, sr_hz) / 8 )
#define __LC3_NH(sr_hz) \
( (18 * sr_hz) / 1000 )
#define __LC3_NR(dt_us, sr_hz) \
( ((3 - ((dt_us) >= 10000)) + 1) * __LC3_NS(dt_us, sr_hz) )
/**
@@ -123,7 +123,7 @@ struct lc3_encoder {
typedef struct lc3_ltpf_synthesis {
bool active;
int pitch;
float c[12][2], x[12];
float c[2*12], x[12];
} lc3_ltpf_synthesis_t;
typedef struct lc3_plc_state {
@@ -139,12 +139,12 @@ struct lc3_decoder {
lc3_ltpf_synthesis_t ltpf;
lc3_plc_state_t plc;
float *xs, *xd, *xg, s[0];
float *xr, *xs, *xd, *xg, s[0];
};
#define LC3_DECODER_BUFFER_COUNT(dt_us, sr_hz) \
( __LC3_NH(sr_hz) + __LC3_NS(dt_us, sr_hz) + \
__LC3_ND(dt_us, sr_hz) + __LC3_NS(dt_us, sr_hz) )
( __LC3_NR(dt_us, sr_hz) + __LC3_ND(dt_us, sr_hz) + \
__LC3_NS(dt_us, sr_hz) )
#define LC3_DECODER_MEM_T(dt_us, sr_hz) \
struct { \