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Data Structures | Macros | Typedefs | Functions | Variables
tx.c File Reference
#include <stddef.h>
#include "tx.h"
#include "thread.h"
#include "mem.h"
#include "avassert.h"

Go to the source code of this file.

Data Structures

struct  AVTXContext
 
struct  CosTabsInitOnce
 

Macros

#define FFT_NAME(x)   x
 
#define COSTABLE(size)   static DECLARE_ALIGNED(32, FFTSample, FFT_NAME(ff_cos_##size))[size/2]
 
#define INIT_FF_COS_TABS_FUNC(index, size)
 
#define BF(x, y, a, b)
 
#define CMUL(dre, dim, are, aim, bre, bim)
 
#define CMUL3(c, a, b)   CMUL((c).re, (c).im, (a).re, (a).im, (b).re, (b).im)
 
#define DECL_FFT5(NAME, D0, D1, D2, D3, D4)
 
#define BUTTERFLIES(a0, a1, a2, a3)
 
#define BUTTERFLIES_BIG(a0, a1, a2, a3)
 
#define TRANSFORM(a0, a1, a2, a3, wre, wim)
 
#define TRANSFORM_ZERO(a0, a1, a2, a3)
 
#define PASS(name)
 
#define BUTTERFLIES   BUTTERFLIES_BIG
 
#define DECL_FFT(n, n2, n4)
 
#define pass   pass_big
 
#define DECL_COMP_FFT(N)
 
#define DECL_COMP_IMDCT(N)
 
#define DECL_COMP_MDCT(N)
 
#define CHECK_FACTOR(DST, FACTOR, SRC)
 

Typedefs

typedef float FFTSample
 
typedef AVComplexFloat FFTComplex
 

Functions

static FFTSample *const FFT_NAME (ff_cos_tabs)[18]
 
 COSTABLE (16)
 
 COSTABLE (32)
 
 COSTABLE (64)
 
 COSTABLE (128)
 
 COSTABLE (256)
 
 COSTABLE (512)
 
 COSTABLE (1024)
 
 COSTABLE (2048)
 
 COSTABLE (4096)
 
 COSTABLE (8192)
 
 COSTABLE (16384)
 
 COSTABLE (32768)
 
 COSTABLE (65536)
 
 COSTABLE (131072)
 
static av_cold void init_ff_cos_tabs (int index)
 
static av_cold void ff_init_ff_cos_tabs (int index)
 
static av_cold void ff_init_53_tabs (void)
 
static av_always_inline void fft3 (FFTComplex *out, FFTComplex *in, ptrdiff_t stride)
 
static av_always_inline void fft15 (FFTComplex *out, FFTComplex *in, ptrdiff_t stride)
 
static void fft4 (FFTComplex *z)
 
static void fft8 (FFTComplex *z)
 
static void fft16 (FFTComplex *z)
 
static void monolithic_fft (AVTXContext *s, void *_out, void *_in, ptrdiff_t stride)
 
static void monolithic_imdct (AVTXContext *s, void *_dst, void *_src, ptrdiff_t stride)
 
static void monolithic_mdct (AVTXContext *s, void *_dst, void *_src, ptrdiff_t stride)
 
static int mulinv (int n, int m)
 
static int gen_compound_mapping (AVTXContext *s, int n, int m, int inv, enum AVTXType type)
 
static int split_radix_permutation (int i, int n, int inverse)
 
static int get_ptwo_revtab (AVTXContext *s, int m, int inv)
 
static int gen_mdct_exptab (AVTXContext *s, int len4, double scale)
 
av_cold void av_tx_uninit (AVTXContext **ctx)
 Frees a context and sets ctx to NULL, does nothing when ctx == NULL. More...
 
static int init_mdct_fft (AVTXContext *s, av_tx_fn *tx, enum AVTXType type, int inv, int len, const void *scale, uint64_t flags)
 
av_cold int av_tx_init (AVTXContext **ctx, av_tx_fn *tx, enum AVTXType type, int inv, int len, const void *scale, uint64_t flags)
 Initialize a transform context with the given configuration Currently power of two lengths from 4 to 131072 are supported, along with any length decomposable to a power of two and either 3, 5 or 15. More...
 

Variables

static CosTabsInitOnce cos_tabs_init_once []
 
static AVOnce tabs_53_once = AV_ONCE_INIT
 
static FFTComplex ff_53_tabs [4]
 
static void(*const fft_dispatch [])(FFTComplex *)
 

Macro Definition Documentation

◆ FFT_NAME

#define FFT_NAME (   x)    x

Definition at line 44 of file tx.c.

◆ COSTABLE

#define COSTABLE (   size)    static DECLARE_ALIGNED(32, FFTSample, FFT_NAME(ff_cos_##size))[size/2]

Definition at line 46 of file tx.c.

◆ INIT_FF_COS_TABS_FUNC

#define INIT_FF_COS_TABS_FUNC (   index,
  size 
)
Value:
static av_cold void init_ff_cos_tabs_ ## size (void) \
{ \
init_ff_cos_tabs(index); \
}

Definition at line 82 of file tx.c.

◆ BF

#define BF (   x,
  y,
  a,
  b 
)
Value:
do { \
x = (a) - (b); \
y = (a) + (b); \
} while (0)

Definition at line 159 of file tx.c.

◆ CMUL

#define CMUL (   dre,
  dim,
  are,
  aim,
  bre,
  bim 
)
Value:
do { \
(dre) = (are) * (bre) - (aim) * (bim); \
(dim) = (are) * (bim) + (aim) * (bre); \
} while (0)

Definition at line 164 of file tx.c.

◆ CMUL3

#define CMUL3 (   c,
  a,
  b 
)    CMUL((c).re, (c).im, (a).re, (a).im, (b).re, (b).im)

Definition at line 169 of file tx.c.

◆ DECL_FFT5

#define DECL_FFT5 (   NAME,
  D0,
  D1,
  D2,
  D3,
  D4 
)

Definition at line 195 of file tx.c.

◆ BUTTERFLIES [1/2]

#define BUTTERFLIES (   a0,
  a1,
  a2,
  a3 
)
Value:
{\
BF(t3, t5, t5, t1);\
BF(a2.re, a0.re, a0.re, t5);\
BF(a3.im, a1.im, a1.im, t3);\
BF(t4, t6, t2, t6);\
BF(a3.re, a1.re, a1.re, t4);\
BF(a2.im, a0.im, a0.im, t6);\
}

Definition at line 322 of file tx.c.

◆ BUTTERFLIES_BIG

#define BUTTERFLIES_BIG (   a0,
  a1,
  a2,
  a3 
)
Value:
{\
FFTSample r0=a0.re, i0=a0.im, r1=a1.re, i1=a1.im;\
BF(t3, t5, t5, t1);\
BF(a2.re, a0.re, r0, t5);\
BF(a3.im, a1.im, i1, t3);\
BF(t4, t6, t2, t6);\
BF(a3.re, a1.re, r1, t4);\
BF(a2.im, a0.im, i0, t6);\
}

Definition at line 274 of file tx.c.

◆ TRANSFORM

#define TRANSFORM (   a0,
  a1,
  a2,
  a3,
  wre,
  wim 
)
Value:
{\
CMUL(t1, t2, a2.re, a2.im, wre, -wim);\
CMUL(t5, t6, a3.re, a3.im, wre, wim);\
BUTTERFLIES(a0,a1,a2,a3)\
}

Definition at line 284 of file tx.c.

◆ TRANSFORM_ZERO

#define TRANSFORM_ZERO (   a0,
  a1,
  a2,
  a3 
)
Value:
{\
t1 = a2.re;\
t2 = a2.im;\
t5 = a3.re;\
t6 = a3.im;\
BUTTERFLIES(a0,a1,a2,a3)\
}

Definition at line 290 of file tx.c.

◆ PASS

#define PASS (   name)
Value:
static void name(FFTComplex *z, const FFTSample *wre, unsigned int n)\
{\
FFTSample t1, t2, t3, t4, t5, t6;\
int o1 = 2*n;\
int o2 = 4*n;\
int o3 = 6*n;\
const FFTSample *wim = wre+o1;\
n--;\
\
TRANSFORM_ZERO(z[0],z[o1],z[o2],z[o3]);\
TRANSFORM(z[1],z[o1+1],z[o2+1],z[o3+1],wre[1],wim[-1]);\
do {\
z += 2;\
wre += 2;\
wim -= 2;\
TRANSFORM(z[0],z[o1],z[o2],z[o3],wre[0],wim[0]);\
TRANSFORM(z[1],z[o1+1],z[o2+1],z[o3+1],wre[1],wim[-1]);\
} while(--n);\
}

Definition at line 299 of file tx.c.

◆ BUTTERFLIES [2/2]

#define BUTTERFLIES   BUTTERFLIES_BIG

Definition at line 322 of file tx.c.

◆ DECL_FFT

#define DECL_FFT (   n,
  n2,
  n4 
)
Value:
static void fft##n(FFTComplex *z)\
{\
fft##n2(z);\
fft##n4(z+n4*2);\
fft##n4(z+n4*3);\
pass(z,FFT_NAME(ff_cos_##n),n4/2);\
}

Definition at line 325 of file tx.c.

◆ pass

#define pass   pass_big

Definition at line 384 of file tx.c.

◆ DECL_COMP_FFT

#define DECL_COMP_FFT (   N)
Value:
static void compound_fft_##N##xM(AVTXContext *s, void *_out, \
void *_in, ptrdiff_t stride) \
{ \
const int m = s->m, *in_map = s->pfatab, *out_map = in_map + N*m; \
FFTComplex *in = _in; \
FFTComplex *out = _out; \
FFTComplex fft##N##in[N]; \
void (*fftp)(FFTComplex *z) = fft_dispatch[av_log2(m) - 2]; \
\
for (int i = 0; i < m; i++) { \
for (int j = 0; j < N; j++) \
fft##N##in[j] = in[in_map[i*N + j]]; \
fft##N(s->tmp + s->revtab[i], fft##N##in, m); \
} \
\
for (int i = 0; i < N; i++) \
fftp(s->tmp + m*i); \
\
for (int i = 0; i < N*m; i++) \
out[i] = s->tmp[out_map[i]]; \
}

Definition at line 399 of file tx.c.

◆ DECL_COMP_IMDCT

#define DECL_COMP_IMDCT (   N)

Definition at line 437 of file tx.c.

◆ DECL_COMP_MDCT

#define DECL_COMP_MDCT (   N)

Definition at line 479 of file tx.c.

◆ CHECK_FACTOR

#define CHECK_FACTOR (   DST,
  FACTOR,
  SRC 
)
Value:
if (DST == 1 && !(SRC % FACTOR)) { \
DST = FACTOR; \
SRC /= FACTOR; \
}

Typedef Documentation

◆ FFTSample

typedef float FFTSample

Definition at line 31 of file tx.c.

◆ FFTComplex

typedef AVComplexFloat FFTComplex

Definition at line 32 of file tx.c.

Function Documentation

◆ FFT_NAME()

static FFTSample* const FFT_NAME ( ff_cos_tabs  )
static

◆ COSTABLE() [1/14]

COSTABLE ( 16  )

◆ COSTABLE() [2/14]

COSTABLE ( 32  )

◆ COSTABLE() [3/14]

COSTABLE ( 64  )

◆ COSTABLE() [4/14]

COSTABLE ( 128  )

◆ COSTABLE() [5/14]

COSTABLE ( 256  )

◆ COSTABLE() [6/14]

COSTABLE ( 512  )

◆ COSTABLE() [7/14]

COSTABLE ( 1024  )

◆ COSTABLE() [8/14]

COSTABLE ( 2048  )

◆ COSTABLE() [9/14]

COSTABLE ( 4096  )

◆ COSTABLE() [10/14]

COSTABLE ( 8192  )

◆ COSTABLE() [11/14]

COSTABLE ( 16384  )

◆ COSTABLE() [12/14]

COSTABLE ( 32768  )

◆ COSTABLE() [13/14]

COSTABLE ( 65536  )

◆ COSTABLE() [14/14]

COSTABLE ( 131072  )

◆ init_ff_cos_tabs()

static av_cold void init_ff_cos_tabs ( int  index)
static

Definition at line 66 of file tx.c.

◆ ff_init_ff_cos_tabs()

static av_cold void ff_init_ff_cos_tabs ( int  index)
static

Definition at line 142 of file tx.c.

Referenced by init_mdct_fft().

◆ ff_init_53_tabs()

static av_cold void ff_init_53_tabs ( void  )
static

Definition at line 151 of file tx.c.

Referenced by init_mdct_fft().

◆ fft3()

static av_always_inline void fft3 ( FFTComplex *  out,
FFTComplex *  in,
ptrdiff_t  stride 
)
static

Definition at line 171 of file tx.c.

Referenced by fft15().

◆ fft15()

static av_always_inline void fft15 ( FFTComplex *  out,
FFTComplex *  in,
ptrdiff_t  stride 
)
static

Definition at line 249 of file tx.c.

◆ fft4()

static void fft4 ( FFTComplex *  z)
static

Definition at line 334 of file tx.c.

Referenced by fft16(), and fft8().

◆ fft8()

static void fft8 ( FFTComplex *  z)
static

Definition at line 348 of file tx.c.

Referenced by fft16().

◆ fft16()

static void fft16 ( FFTComplex *  z)
static

Definition at line 363 of file tx.c.

◆ monolithic_fft()

static void monolithic_fft ( AVTXContext *  s,
void *  _out,
void *  _in,
ptrdiff_t  stride 
)
static

Definition at line 426 of file tx.c.

Referenced by init_mdct_fft().

◆ monolithic_imdct()

static void monolithic_imdct ( AVTXContext *  s,
void *  _dst,
void *  _src,
ptrdiff_t  stride 
)
static

Definition at line 527 of file tx.c.

Referenced by init_mdct_fft().

◆ monolithic_mdct()

static void monolithic_mdct ( AVTXContext *  s,
void *  _dst,
void *  _src,
ptrdiff_t  stride 
)
static

Definition at line 556 of file tx.c.

Referenced by init_mdct_fft().

◆ mulinv()

static int mulinv ( int  n,
int  m 
)
static

Definition at line 594 of file tx.c.

Referenced by gen_compound_mapping().

◆ gen_compound_mapping()

static int gen_compound_mapping ( AVTXContext *  s,
int  n,
int  m,
int  inv,
enum AVTXType  type 
)
static

Definition at line 604 of file tx.c.

Referenced by init_mdct_fft().

◆ split_radix_permutation()

static int split_radix_permutation ( int  i,
int  n,
int  inverse 
)
static

Definition at line 652 of file tx.c.

Referenced by get_ptwo_revtab().

◆ get_ptwo_revtab()

static int get_ptwo_revtab ( AVTXContext *  s,
int  m,
int  inv 
)
static

Definition at line 667 of file tx.c.

Referenced by init_mdct_fft().

◆ gen_mdct_exptab()

static int gen_mdct_exptab ( AVTXContext *  s,
int  len4,
double  scale 
)
static

Definition at line 681 of file tx.c.

Referenced by init_mdct_fft().

◆ av_tx_uninit()

av_cold void av_tx_uninit ( AVTXContext **  ctx)

Frees a context and sets ctx to NULL, does nothing when ctx == NULL.

Definition at line 698 of file tx.c.

Referenced by av_tx_init().

◆ init_mdct_fft()

static int init_mdct_fft ( AVTXContext *  s,
av_tx_fn *  tx,
enum AVTXType  type,
int  inv,
int  len,
const void *  scale,
uint64_t  flags 
)
static

Definition at line 711 of file tx.c.

Referenced by av_tx_init().

◆ av_tx_init()

av_cold int av_tx_init ( AVTXContext **  ctx,
av_tx_fn *  tx,
enum AVTXType  type,
int  inv,
int  len,
const void *  scale,
uint64_t  flags 
)

Initialize a transform context with the given configuration Currently power of two lengths from 4 to 131072 are supported, along with any length decomposable to a power of two and either 3, 5 or 15.

Parameters
ctxthe context to allocate, will be NULL on error
txpointer to the transform function pointer to set
typetype the type of transform
invwhether to do an inverse or a forward transform
lenthe size of the transform in samples
scalepointer to the value to scale the output if supported by type
flagscurrently unused
Returns
0 on success, negative error code on failure

Definition at line 776 of file tx.c.

Variable Documentation

◆ cos_tabs_init_once

CosTabsInitOnce cos_tabs_init_once[]
static
Initial value:
= {
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ init_ff_cos_tabs_16, AV_ONCE_INIT },
{ init_ff_cos_tabs_32, AV_ONCE_INIT },
{ init_ff_cos_tabs_64, AV_ONCE_INIT },
{ init_ff_cos_tabs_128, AV_ONCE_INIT },
{ init_ff_cos_tabs_256, AV_ONCE_INIT },
{ init_ff_cos_tabs_512, AV_ONCE_INIT },
{ init_ff_cos_tabs_1024, AV_ONCE_INIT },
{ init_ff_cos_tabs_2048, AV_ONCE_INIT },
{ init_ff_cos_tabs_4096, AV_ONCE_INIT },
{ init_ff_cos_tabs_8192, AV_ONCE_INIT },
{ init_ff_cos_tabs_16384, AV_ONCE_INIT },
{ init_ff_cos_tabs_32768, AV_ONCE_INIT },
{ init_ff_cos_tabs_65536, AV_ONCE_INIT },
{ init_ff_cos_tabs_131072, AV_ONCE_INIT },
}

Definition at line 103 of file tx.c.

Referenced by ff_init_ff_cos_tabs().

◆ tabs_53_once

AVOnce tabs_53_once = AV_ONCE_INIT
static

Definition at line 148 of file tx.c.

Referenced by init_mdct_fft().

◆ ff_53_tabs

FFTComplex ff_53_tabs[4]
static

Definition at line 149 of file tx.c.

Referenced by ff_init_53_tabs(), and fft3().

◆ fft_dispatch

void(* const fft_dispatch[])(FFTComplex *)
static
Initial value:
= {
fft4, fft8, fft16, fft32, fft64, fft128, fft256, fft512, fft1024,
fft2048, fft4096, fft8192, fft16384, fft32768, fft65536, fft131072
}

Definition at line 394 of file tx.c.

Referenced by init_mdct_fft(), monolithic_fft(), monolithic_imdct(), and monolithic_mdct().

stride
int stride
Definition: mace.c:144
out
FILE * out
Definition: movenc.c:54
n
int n
Definition: avisynth_c.h:760
AVTXContext
Definition: tx.c:34
name
const char * name
Definition: avisynth_c.h:867
b
#define b
Definition: input.c:41
t1
#define t1
Definition: regdef.h:29
fft8
static void fft8(FFTComplex *z)
Definition: tx.c:348
fft_dispatch
static void(*const fft_dispatch[])(FFTComplex *)
Definition: tx.c:394
FFT_NAME
#define FFT_NAME(x)
Definition: tx.c:44
a1
#define a1
Definition: regdef.h:47
av_cold
#define av_cold
Definition: attributes.h:84
s
#define s(width, name)
Definition: cbs_vp9.c:257
TRANSFORM_ZERO
#define TRANSFORM_ZERO(a0, a1, a2, a3)
Definition: tx.c:290
AV_ONCE_INIT
#define AV_ONCE_INIT
Definition: thread.h:160
NULL
#define NULL
Definition: coverity.c:32
t5
#define t5
Definition: regdef.h:33
t6
#define t6
Definition: regdef.h:34
FFTSample
float FFTSample
Definition: avfft.h:35
index
int index
Definition: gxfenc.c:89
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
size
int size
Definition: twinvq_data.h:11134
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
N
#define N
Definition: af_mcompand.c:54
a0
#define a0
Definition: regdef.h:46
SRC
#define SRC(x, y)
Definition: h264pred_template.c:847
in
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
Definition: audio_convert.c:326
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
t4
#define t4
Definition: regdef.h:32
t3
#define t3
Definition: regdef.h:31
a2
#define a2
Definition: regdef.h:48
dim
int dim
Definition: vorbis_enc_data.h:451
fft16
static void fft16(FFTComplex *z)
Definition: tx.c:363
t2
#define t2
Definition: regdef.h:30
DST
#define DST(x, y)
Definition: vp9dsp_template.c:781
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
a3
#define a3
Definition: regdef.h:49
FFTComplex
Definition: avfft.h:37
fft4
static void fft4(FFTComplex *z)
Definition: tx.c:334
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