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make comments doxygen compatible

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Originally committed as revision 3333 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-07-22 18:55:36 +00:00
parent 7344c87aa9
commit ef9c5d84be
1 changed files with 31 additions and 30 deletions
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61
libavcodec/g726.c
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@ -23,15 +23,16 @@
#include "avcodec.h"
#include "common.h"
/*
/**
* G.726 11bit float.
* G.726 Standard uses rather odd 11bit floating point arithmentic for
* numerous occasions. It's a mistery to me why they did it this way
* instead of simply using 32bit integer arithmetic.
*/
typedef struct Float11 {
int sign; /* 1bit sign */
int exp; /* 4bit exponent */
int mant; /* 6bit mantissa */
int sign; /**< 1bit sign */
int exp; /**< 4bit exponent */
int mant; /**< 6bit mantissa */
} Float11;
static inline Float11* i2f(int16_t i, Float11* f)
@ -61,35 +62,35 @@ static inline int sgn(int value)
}
typedef struct G726Tables {
int bits; /* bits per sample */
int* quant; /* quantization table */
int* iquant; /* inverse quantization table */
int* W; /* special table #1 ;-) */
int* F; /* special table #2 */
int bits; /**< bits per sample */
int* quant; /**< quantization table */
int* iquant; /**< inverse quantization table */
int* W; /**< special table #1 ;-) */
int* F; /**< special table #2 */
} G726Tables;
typedef struct G726Context {
G726Tables* tbls; /* static tables needed for computation */
G726Tables* tbls; /**< static tables needed for computation */
Float11 sr[2]; /* prev. reconstructed samples */
Float11 dq[6]; /* prev. difference */
int a[2]; /* second order predictor coeffs */
int b[6]; /* sixth order predictor coeffs */
int pk[2]; /* signs of prev. 2 sez + dq */
Float11 sr[2]; /**< prev. reconstructed samples */
Float11 dq[6]; /**< prev. difference */
int a[2]; /**< second order predictor coeffs */
int b[6]; /**< sixth order predictor coeffs */
int pk[2]; /**< signs of prev. 2 sez + dq */
int ap; /* scale factor control */
int yu; /* fast scale factor */
int yl; /* slow scale factor */
int dms; /* short average magnitude of F[i] */
int dml; /* long average magnitude of F[i] */
int td; /* tone detect */
int ap; /**< scale factor control */
int yu; /**< fast scale factor */
int yl; /**< slow scale factor */
int dms; /**< short average magnitude of F[i] */
int dml; /**< long average magnitude of F[i] */
int td; /**< tone detect */
int se; /* estimated signal for the next iteration */
int sez; /* estimated second order prediction */
int y; /* quantizer scaling factor for the next iteration */
int se; /**< estimated signal for the next iteration */
int sez; /**< estimated second order prediction */
int y; /**< quantizer scaling factor for the next iteration */
} G726Context;
static int quant_tbl16[] = /* 16kbit/s 2bits per sample */
static int quant_tbl16[] = /**< 16kbit/s 2bits per sample */
{ 260, INT_MAX };
static int iquant_tbl16[] =
{ 116, 365, 365, 116 };
@ -98,7 +99,7 @@ static int W_tbl16[] =
static int F_tbl16[] =
{ 0, 7, 7, 0 };
static int quant_tbl24[] = /* 24kbit/s 3bits per sample */
static int quant_tbl24[] = /**< 24kbit/s 3bits per sample */
{ 7, 217, 330, INT_MAX };
static int iquant_tbl24[] =
{ INT_MIN, 135, 273, 373, 373, 273, 135, INT_MIN };
@ -107,7 +108,7 @@ static int W_tbl24[] =
static int F_tbl24[] =
{ 0, 1, 2, 7, 7, 2, 1, 0 };
static int quant_tbl32[] = /* 32kbit/s 4bits per sample */
static int quant_tbl32[] = /**< 32kbit/s 4bits per sample */
{ -125, 79, 177, 245, 299, 348, 399, INT_MAX };
static int iquant_tbl32[] =
{ INT_MIN, 4, 135, 213, 273, 323, 373, 425,
@ -118,7 +119,7 @@ static int W_tbl32[] =
static int F_tbl32[] =
{ 0, 0, 0, 1, 1, 1, 3, 7, 7, 3, 1, 1, 1, 0, 0, 0 };
static int quant_tbl40[] = /* 40kbit/s 5bits per sample */
static int quant_tbl40[] = /**< 40kbit/s 5bits per sample */
{ -122, -16, 67, 138, 197, 249, 297, 338,
377, 412, 444, 474, 501, 527, 552, INT_MAX };
static int iquant_tbl40[] =
@ -142,7 +143,7 @@ static G726Tables G726Tables_pool[] =
{ 5, quant_tbl40, iquant_tbl40, W_tbl40, F_tbl40 }};
/*
/**
* Para 4.2.2 page 18: Adaptive quantizer.
*/
static inline uint8_t quant(G726Context* c, int d)
@ -168,7 +169,7 @@ static inline uint8_t quant(G726Context* c, int d)
return i;
}
/*
/**
* Para 4.2.3 page 22: Inverse adaptive quantizer.
*/
static inline int16_t inverse_quant(G726Context* c, int i)