diff options
| author | Måns Rullgård <mans@mansr.com> | 2010-03-07 21:56:45 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2010-03-07 21:56:45 +0000 |
| commit | c70948315b2108d5d082cafe580cb6317edb82be (patch) | |
| tree | 37e8528e5dabc3c43fd9063cbdeaa021a467750a /libavcodec/fft.h | |
| parent | 41ea18fb0db3c22943458e23d604158f2c95d4ca (diff) | |
Create a public API for FFT family of functions
Originally committed as revision 22291 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/fft.h')
| -rw-r--r-- | libavcodec/fft.h | 28 |
1 files changed, 7 insertions, 21 deletions
diff --git a/libavcodec/fft.h b/libavcodec/fft.h index 9c2345a0bd..636f76b824 100644 --- a/libavcodec/fft.h +++ b/libavcodec/fft.h @@ -25,18 +25,11 @@ #include <stdint.h> #include "config.h" #include "libavutil/mem.h" +#include "avfft.h" /* FFT computation */ -/* NOTE: soon integer code will be added, so you must use the - FFTSample type */ -typedef float FFTSample; - -typedef struct FFTComplex { - FFTSample re, im; -} FFTComplex; - -typedef struct FFTContext { +struct FFTContext { int nbits; int inverse; uint16_t *revtab; @@ -57,7 +50,7 @@ typedef struct FFTContext { int permutation; #define FF_MDCT_PERM_NONE 0 #define FF_MDCT_PERM_INTERLEAVE 1 -} FFTContext; +}; #if CONFIG_HARDCODED_TABLES #define COSTABLE_CONST const @@ -194,14 +187,7 @@ void ff_mdct_end(FFTContext *s); /* Real Discrete Fourier Transform */ -enum RDFTransformType { - DFT_R2C, - IDFT_C2R, - IDFT_R2C, - DFT_C2R, -}; - -typedef struct { +struct RDFTContext { int nbits; int inverse; int sign_convention; @@ -210,7 +196,7 @@ typedef struct { const FFTSample *tcos; SINTABLE_CONST FFTSample *tsin; FFTContext fft; -} RDFTContext; +}; /** * Sets up a real FFT. @@ -223,14 +209,14 @@ void ff_rdft_end(RDFTContext *s); /* Discrete Cosine Transform */ -typedef struct { +struct DCTContext { int nbits; int inverse; FFTSample *data; RDFTContext rdft; const float *costab; FFTSample *csc2; -} DCTContext; +}; /** * Sets up (Inverse)DCT. |