#ifndef AVCODEC_FFT_H
#define AVCODEC_FFT_H
+#ifndef CONFIG_FFT_FLOAT
+#define CONFIG_FFT_FLOAT 1
+#endif
+
#include <stdint.h>
#include "config.h"
#include "libavutil/mem.h"
+
+#if CONFIG_FFT_FLOAT
+
#include "avfft.h"
+#define FFT_NAME(x) x
+
+typedef float FFTDouble;
+
+#else
+
+#define FFT_NAME(x) x ## _fixed
+
+typedef int16_t FFTSample;
+typedef int FFTDouble;
+
+typedef struct FFTComplex {
+ int16_t re, im;
+} FFTComplex;
+
+typedef struct FFTContext FFTContext;
+
+#endif /* CONFIG_FFT_FLOAT */
+
+typedef struct FFTDComplex {
+ FFTDouble re, im;
+} FFTDComplex;
+
/* FFT computation */
struct FFTContext {
/* pre/post rotation tables */
FFTSample *tcos;
FFTSample *tsin;
+ /**
+ * Do the permutation needed BEFORE calling fft_calc().
+ */
void (*fft_permute)(struct FFTContext *s, FFTComplex *z);
+ /**
+ * Do a complex FFT with the parameters defined in ff_fft_init(). The
+ * input data must be permuted before. No 1.0/sqrt(n) normalization is done.
+ */
void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
void (*imdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
void (*imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
void (*mdct_calc)(struct FFTContext *s, FFTSample *output, const FFTSample *input);
+ void (*mdct_calcw)(struct FFTContext *s, FFTDouble *output, const FFTSample *input);
int fft_permutation;
#define FF_FFT_PERM_DEFAULT 0
#define FF_FFT_PERM_SWAP_LSBS 1
+#define FF_FFT_PERM_AVX 2
int mdct_permutation;
#define FF_MDCT_PERM_NONE 0
#define FF_MDCT_PERM_INTERLEAVE 1
#if CONFIG_HARDCODED_TABLES
#define COSTABLE_CONST const
-#define SINTABLE_CONST const
-#define SINETABLE_CONST const
#else
#define COSTABLE_CONST
-#define SINTABLE_CONST
-#define SINETABLE_CONST
#endif
#define COSTABLE(size) \
- COSTABLE_CONST DECLARE_ALIGNED(16, FFTSample, ff_cos_##size)[size/2]
-#define SINTABLE(size) \
- SINTABLE_CONST DECLARE_ALIGNED(16, FFTSample, ff_sin_##size)[size/2]
-#define SINETABLE(size) \
- SINETABLE_CONST DECLARE_ALIGNED(16, float, ff_sine_##size)[size]
+ COSTABLE_CONST DECLARE_ALIGNED(32, FFTSample, FFT_NAME(ff_cos_##size))[size/2]
+
extern COSTABLE(16);
extern COSTABLE(32);
extern COSTABLE(64);
extern COSTABLE(16384);
extern COSTABLE(32768);
extern COSTABLE(65536);
-extern COSTABLE_CONST FFTSample* const ff_cos_tabs[17];
+extern COSTABLE_CONST FFTSample* const FFT_NAME(ff_cos_tabs)[17];
+
+#define ff_init_ff_cos_tabs FFT_NAME(ff_init_ff_cos_tabs)
/**
* Initialize the cosine table in ff_cos_tabs[index]
- * \param index index in ff_cos_tabs array of the table to initialize
+ * @param index index in ff_cos_tabs array of the table to initialize
*/
void ff_init_ff_cos_tabs(int index);
-extern SINTABLE(16);
-extern SINTABLE(32);
-extern SINTABLE(64);
-extern SINTABLE(128);
-extern SINTABLE(256);
-extern SINTABLE(512);
-extern SINTABLE(1024);
-extern SINTABLE(2048);
-extern SINTABLE(4096);
-extern SINTABLE(8192);
-extern SINTABLE(16384);
-extern SINTABLE(32768);
-extern SINTABLE(65536);
+#define ff_fft_init FFT_NAME(ff_fft_init)
+#define ff_fft_end FFT_NAME(ff_fft_end)
/**
* Set up a complex FFT.
*/
int ff_fft_init(FFTContext *s, int nbits, int inverse);
+#if CONFIG_FFT_FLOAT
void ff_fft_init_altivec(FFTContext *s);
void ff_fft_init_mmx(FFTContext *s);
void ff_fft_init_arm(FFTContext *s);
-void ff_dct_init_mmx(DCTContext *s);
+#else
+void ff_fft_fixed_init_arm(FFTContext *s);
+#endif
-/**
- * Do the permutation needed BEFORE calling ff_fft_calc().
- */
-static inline void ff_fft_permute(FFTContext *s, FFTComplex *z)
-{
- s->fft_permute(s, z);
-}
-/**
- * Do a complex FFT with the parameters defined in ff_fft_init(). The
- * input data must be permuted before. No 1.0/sqrt(n) normalization is done.
- */
-static inline void ff_fft_calc(FFTContext *s, FFTComplex *z)
-{
- s->fft_calc(s, z);
-}
void ff_fft_end(FFTContext *s);
-/* MDCT computation */
-
-static inline void ff_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input)
-{
- s->imdct_calc(s, output, input);
-}
-static inline void ff_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input)
-{
- s->imdct_half(s, output, input);
-}
-
-static inline void ff_mdct_calc(FFTContext *s, FFTSample *output,
- const FFTSample *input)
-{
- s->mdct_calc(s, output, input);
-}
-
-/**
- * Maximum window size for ff_kbd_window_init.
- */
-#define FF_KBD_WINDOW_MAX 1024
-
-/**
- * Generate a Kaiser-Bessel Derived Window.
- * @param window pointer to half window
- * @param alpha determines window shape
- * @param n size of half window, max FF_KBD_WINDOW_MAX
- */
-void ff_kbd_window_init(float *window, float alpha, int n);
-
-/**
- * Generate a sine window.
- * @param window pointer to half window
- * @param n size of half window
- */
-void ff_sine_window_init(float *window, int n);
-
-/**
- * initialize the specified entry of ff_sine_windows
- */
-void ff_init_ff_sine_windows(int index);
-extern SINETABLE( 32);
-extern SINETABLE( 64);
-extern SINETABLE( 128);
-extern SINETABLE( 256);
-extern SINETABLE( 512);
-extern SINETABLE(1024);
-extern SINETABLE(2048);
-extern SINETABLE(4096);
-extern SINETABLE_CONST float * const ff_sine_windows[13];
+#define ff_mdct_init FFT_NAME(ff_mdct_init)
+#define ff_mdct_end FFT_NAME(ff_mdct_end)
int ff_mdct_init(FFTContext *s, int nbits, int inverse, double scale);
-void ff_imdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);
-void ff_imdct_half_c(FFTContext *s, FFTSample *output, const FFTSample *input);
-void ff_mdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);
void ff_mdct_end(FFTContext *s);
-/* Real Discrete Fourier Transform */
-
-struct RDFTContext {
- int nbits;
- int inverse;
- int sign_convention;
-
- /* pre/post rotation tables */
- const FFTSample *tcos;
- SINTABLE_CONST FFTSample *tsin;
- FFTContext fft;
- void (*rdft_calc)(struct RDFTContext *s, FFTSample *z);
-};
-
-/**
- * Set up a real FFT.
- * @param nbits log2 of the length of the input array
- * @param trans the type of transform
- */
-int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans);
-void ff_rdft_end(RDFTContext *s);
-
-void ff_rdft_init_arm(RDFTContext *s);
-
-static av_always_inline void ff_rdft_calc(RDFTContext *s, FFTSample *data)
-{
- s->rdft_calc(s, data);
-}
-
-/* Discrete Cosine Transform */
-
-struct DCTContext {
- int nbits;
- int inverse;
- RDFTContext rdft;
- const float *costab;
- FFTSample *csc2;
- void (*dct_calc)(struct DCTContext *s, FFTSample *data);
- void (*dct32)(FFTSample *out, const FFTSample *in);
-};
-
-/**
- * Set up DCT.
- * @param nbits size of the input array:
- * (1 << nbits) for DCT-II, DCT-III and DST-I
- * (1 << nbits) + 1 for DCT-I
- *
- * @note the first element of the input of DST-I is ignored
- */
-int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType type);
-void ff_dct_calc(DCTContext *s, FFTSample *data);
-void ff_dct_end (DCTContext *s);
-
#endif /* AVCODEC_FFT_H */