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Decent analysis of UTalk

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This commit is contained in:
Fatbag 2012-01-17 20:23:53 -06:00
parent e53580919a
commit 250458b384
7 changed files with 740 additions and 94 deletions
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25
Libraries/FileHandler/utk/read_utk.h
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@ -1,5 +1,5 @@
/*
read_utk.h - Copyright (c) 2011 Fatbag <X-Fi6@phppoll.org>
read_utk.h - Copyright (c) 2011-2012 Fatbag <X-Fi6@phppoll.org>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
@ -33,12 +33,15 @@ typedef struct
} utkheader_t;
typedef struct {
const uint8_t *InData;
unsigned x, y;
unsigned a, b;
float c[88];
float d[324];
float DecompressedBlock[432];
const uint8_t *InData;
unsigned UnreadBitsValue, UnreadBitsCount;
int UseLattice;
unsigned NoiseFloor;
float FixedCodebook[64]; /* Fixed codebook gain matrix */
float ImpulseTrain[12]; /* Impulse train matrix */
float R[12]; /* Autocorrelation coefficient matrix */
float Delay[324];
float DecompressedBlock[432];
} utkparams_t;
#ifdef __cplusplus
@ -48,12 +51,12 @@ extern "C" {
int utk_read_header(utkheader_t * UTKHeader, const uint8_t * Buffer, unsigned FileSize);
int utk_decode(const uint8_t *__restrict InBuffer, uint8_t *__restrict OutBuffer, unsigned Frames);
void UTKGenerateTables(void);
uint8_t ReadCC(utkparams_t *p, uint8_t i);
uint8_t ReadCC(utkparams_t *p, uint8_t bits);
void SetUTKParameters(utkparams_t *p);
void DecompressBlock(utkparams_t *p);
void Unknown1(utkparams_t *p, int Branch, float * Window, int Interval);
void Unknown2(utkparams_t *p, unsigned Sample, unsigned Blocks);
void Unknown2_1(float *__restrict c64, float *__restrict Matrix);
void LatticeFilter(utkparams_t *p, int Voiced, float * Window, int Interval);
void Synthesize(utkparams_t *p, unsigned Sample, unsigned Blocks);
void PredictionFilter(const float *__restrict c2, float *__restrict Residual);
#ifdef __cplusplus
}