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ltpf: Move analysis to fixed point

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This commit is contained in:
Antoine SOULIER
2022-05-04 14:45:20 +02:00
parent e0efd79390
commit e471e43aeb
22 changed files with 1902 additions and 345 deletions
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24
include/lc3_private.h
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@@ -26,17 +26,21 @@
/**
* Return number of samples, delayed samples and
* encoded spectrum coefficients within a frame
* For decoding, keep 18 ms of history, aligned on frames, and a frame
* - For encoding, keep 1.25 ms of temporal winodw
* - For decoding, keep 18 ms of history, aligned on frames, and a frame
*/
#define __LC3_NS(dt_us, sr_hz) \
((dt_us * sr_hz) / 1000 / 1000)
( (dt_us * sr_hz) / 1000 / 1000 )
#define __LC3_ND(dt_us, sr_hz) \
( (dt_us) == 7500 ? 23 * __LC3_NS(dt_us, sr_hz) / 30 \
: 5 * __LC3_NS(dt_us, sr_hz) / 8 )
#define __LC3_NR(dt_us, sr_hz) \
#define __LC3_NT(sr_hz) \
( (5 * sr_hz) / 4000 )
#define __LC3_NH(dt_us, sr_hz) \
( ((3 - ((dt_us) >= 10000)) + 1) * __LC3_NS(dt_us, sr_hz) )
@@ -76,7 +80,7 @@ typedef struct lc3_attdet_analysis {
} lc3_attdet_analysis_t;
struct lc3_ltpf_hp50_state {
float s1, s2;
int64_t s1, s2;
};
typedef struct lc3_ltpf_analysis {
@@ -85,8 +89,8 @@ typedef struct lc3_ltpf_analysis {
float nc[2];
struct lc3_ltpf_hp50_state hp50;
float x_12k8[384];
float x_6k4[178];
int16_t x_12k8[384];
int16_t x_6k4[178];
int tc;
} lc3_ltpf_analysis_t;
@@ -103,11 +107,13 @@ struct lc3_encoder {
lc3_ltpf_analysis_t ltpf;
lc3_spec_analysis_t spec;
int16_t *xt;
float *xs, *xf, s[0];
};
#define LC3_ENCODER_BUFFER_COUNT(dt_us, sr_hz) \
( 2*__LC3_NS(dt_us, sr_hz) + __LC3_ND(dt_us, sr_hz) )
( ( __LC3_NS(dt_us, sr_hz) + __LC3_NT(sr_hz) ) / 2 + \
2*__LC3_NS(dt_us, sr_hz) + __LC3_ND(dt_us, sr_hz) )
#define LC3_ENCODER_MEM_T(dt_us, sr_hz) \
struct { \
@@ -139,11 +145,11 @@ struct lc3_decoder {
lc3_ltpf_synthesis_t ltpf;
lc3_plc_state_t plc;
float *xr, *xs, *xd, *xg, s[0];
float *xh, *xs, *xd, *xg, s[0];
};
#define LC3_DECODER_BUFFER_COUNT(dt_us, sr_hz) \
( __LC3_NR(dt_us, sr_hz) + __LC3_ND(dt_us, sr_hz) + \
( __LC3_NH(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) \