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Move dct and rdft definitions to separate files

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This leaves fft.h with only the core FFT and MDCT definitions
thus making it more managable.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2011-03-20 02:14:25 +00:00
parent 4538729afe
commit 0aded9484d
13 changed files with 138 additions and 72 deletions
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1
libavcodec/arm/fft_init_arm.c
View File

@ -19,6 +19,7 @@
*/
#include "libavcodec/fft.h"
#include "libavcodec/rdft.h"
#include "libavcodec/synth_filter.h"
void ff_fft_permute_neon(FFTContext *s, FFTComplex *z);

2
libavcodec/avfft.c
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@ -19,6 +19,8 @@
#include "libavutil/mem.h"
#include "avfft.h"
#include "fft.h"
#include "rdft.h"
#include "dct.h"
/* FFT */

3
libavcodec/binkaudio.c
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@ -32,7 +32,8 @@
#define ALT_BITSTREAM_READER_LE
#include "get_bits.h"
#include "dsputil.h"
#include "fft.h"
#include "dct.h"
#include "rdft.h"
#include "fmtconvert.h"
#include "libavutil/intfloat_readwrite.h"

2
libavcodec/costablegen.c
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@ -37,7 +37,7 @@ int main(int argc, char *argv[])
double (*func)(double) = do_sin ? sin : cos;
printf("/* This file was generated by libavcodec/costablegen */\n");
printf("#include \"libavcodec/fft.h\"\n");
printf("#include \"libavcodec/%s\"\n", do_sin ? "rdft.h" : "fft.h");
for (i = 4; i <= BITS; i++) {
int m = 1 << i;
double freq = 2*M_PI/m;

2
libavcodec/dct.c
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@ -29,7 +29,7 @@
#include <math.h>
#include "libavutil/mathematics.h"
#include "fft.h"
#include "dct.h"
#include "x86/fft.h"
#define DCT32_FLOAT

50
libavcodec/dct.h Normal file
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@ -0,0 +1,50 @@
/*
* (I)DCT Transforms
* Copyright (c) 2009 Peter Ross <pross@xvid.org>
* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
* Copyright (c) 2010 Vitor Sessak
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_DCT_H
#define AVCODEC_DCT_H
#include "rdft.h"
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_end (DCTContext *s);
#endif

2
libavcodec/fft-test.c
View File

@ -27,6 +27,8 @@
#include "libavutil/lfg.h"
#include "libavutil/log.h"
#include "fft.h"
#include "dct.h"
#include "rdft.h"
#include <math.h>
#include <unistd.h>
#include <sys/time.h>

65
libavcodec/fft.h
View File

@ -61,16 +61,12 @@ struct FFTContext {
#if CONFIG_HARDCODED_TABLES
#define COSTABLE_CONST const
#define SINTABLE_CONST const
#else
#define COSTABLE_CONST
#define SINTABLE_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]
extern COSTABLE(16);
extern COSTABLE(32);
@ -93,20 +89,6 @@ extern COSTABLE_CONST FFTSample* const ff_cos_tabs[17];
*/
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);
/**
* Set up a complex FFT.
* @param nbits log2 of the length of the input array
@ -127,51 +109,4 @@ 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);
/* 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_end (DCTContext *s);
#endif /* AVCODEC_FFT_H */

2
libavcodec/mpegaudio.h
View File

@ -33,7 +33,7 @@
#include "avcodec.h"
#include "get_bits.h"
#include "dsputil.h"
#include "fft.h"
#include "dct.h"
#define CONFIG_AUDIO_NONSHORT 0

2
libavcodec/rdft.c
View File

@ -21,7 +21,7 @@
#include <stdlib.h>
#include <math.h>
#include "libavutil/mathematics.h"
#include "fft.h"
#include "rdft.h"
/**
* @file

74
libavcodec/rdft.h Normal file
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@ -0,0 +1,74 @@
/*
* (I)RDFT transforms
* Copyright (c) 2009 Alex Converse <alex dot converse at gmail dot com>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_RDFT_H
#define AVCODEC_RDFT_H
#include "config.h"
#include "fft.h"
#if CONFIG_HARDCODED_TABLES
# define SINTABLE_CONST const
#else
# define SINTABLE_CONST
#endif
#define SINTABLE(size) \
SINTABLE_CONST DECLARE_ALIGNED(16, FFTSample, ff_sin_##size)[size/2]
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);
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);
#endif

4
libavcodec/wmavoice.c
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@ -36,8 +36,8 @@
#include "acelp_filters.h"
#include "lsp.h"
#include "libavutil/lzo.h"
#include "avfft.h"
#include "fft.h"
#include "dct.h"
#include "rdft.h"
#include "sinewin.h"
#define MAX_BLOCKS 8 ///< maximum number of blocks per frame

1
libavcodec/x86/fft.c
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@ -18,6 +18,7 @@
#include "libavutil/cpu.h"
#include "libavcodec/dsputil.h"
#include "libavcodec/dct.h"
#include "fft.h"
av_cold void ff_fft_init_mmx(FFTContext *s)