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avcodec: Extend fft to size 2^17

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Asked-for-by: durandal_1707

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-03-04 00:31:45 +01:00
parent 362e05f1ea
commit ae76b84221
6 changed files with 272 additions and 137 deletions
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3
libavcodec/fft.h
View File

@ -134,7 +134,8 @@ extern COSTABLE(8192);
extern COSTABLE(16384);
extern COSTABLE(32768);
extern COSTABLE(65536);
extern COSTABLE_CONST FFTSample* const FFT_NAME(ff_cos_tabs)[17];
extern COSTABLE(131072);
extern COSTABLE_CONST FFTSample* const FFT_NAME(ff_cos_tabs)[18];
#define ff_init_ff_cos_tabs FFT_NAME(ff_init_ff_cos_tabs)

386
libavcodec/fft_init_table.c
View File

@ -54,137 +54,265 @@
#include "libavcodec/fft_table.h"
const int32_t ff_w_tab_sr[MAX_FFT_SIZE/(4*16)] = {
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197372981, 195732795, 194092495, 192452080, 190811551, 189170911, 187530159, 185889297,
184248325, 182607245, 180966058, 179324764, 177683365, 176041861, 174400254, 172758544,
171116733, 169474820, 167832808, 166190698, 164548489, 162906184, 161263783, 159621287,
157978697, 156336015, 154693240, 153050374, 151407418, 149764374, 148121241, 146478021,
144834714, 143191323, 141547847, 139904288, 138260647, 136616925, 134973122, 133329239,
131685278, 130041240, 128397125, 126752935, 125108670, 123464332, 121819921, 120175438,
118530885, 116886262, 115241570, 113596810, 111951983, 110307091, 108662134, 107017112,
105372028, 103726882, 102081675, 100436408, 98791081, 97145697, 95500255, 93854758,
92209205, 90563597, 88917937, 87272224, 85626460, 83980645, 82334782, 80688869,
79042909, 77396903, 75750851, 74104755, 72458615, 70812432, 69166208, 67519943,
65873638, 64227295, 62580914, 60934496, 59288042, 57641553, 55995030, 54348475,
52701887, 51055268, 49408620, 47761942, 46115236, 44468503, 42821744, 41174960,
39528151, 37881320, 36234466, 34587590, 32940695, 31293780, 29646846, 27999895,
26352928, 24705945, 23058947, 21411936, 19764913, 18117878, 16470832, 14823776,
13176712, 11529640, 9882561, 8235476, 6588387, 4941294, 3294197, 1647099
};
uint16_t ff_fft_offsets_lut[0x2aab];
uint16_t ff_fft_offsets_lut[21845];
void ff_fft_lut_init(uint16_t *table, int off, int size, int *index)
{

2
libavcodec/fft_table.h
View File

@ -56,7 +56,7 @@
#include "libavcodec/fft.h"
#define MAX_LOG2_NFFT 16 //!< Specifies maximum allowed fft size
#define MAX_LOG2_NFFT 17 //!< Specifies maximum allowed fft size
#define MAX_FFT_SIZE (1 << MAX_LOG2_NFFT)
extern const int32_t ff_w_tab_sr[];

9
libavcodec/fft_template.c
View File

@ -51,6 +51,7 @@ COSTABLE(8192);
COSTABLE(16384);
COSTABLE(32768);
COSTABLE(65536);
COSTABLE(131072);
#endif
COSTABLE_CONST FFTSample * const FFT_NAME(ff_cos_tabs)[] = {
NULL, NULL, NULL, NULL,
@ -67,6 +68,7 @@ COSTABLE_CONST FFTSample * const FFT_NAME(ff_cos_tabs)[] = {
FFT_NAME(ff_cos_16384),
FFT_NAME(ff_cos_32768),
FFT_NAME(ff_cos_65536),
FFT_NAME(ff_cos_131072),
};
#endif /* FFT_FIXED_32 */
@ -141,7 +143,7 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)
{
int i, j, n;
if (nbits < 2 || nbits > 16)
if (nbits < 2 || nbits > 17)
goto fail;
s->nbits = nbits;
n = 1 << nbits;
@ -166,7 +168,7 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)
#if FFT_FIXED_32
{
int n=0;
ff_fft_lut_init(ff_fft_offsets_lut, 0, 1 << 16, &n);
ff_fft_lut_init(ff_fft_offsets_lut, 0, 1 << 17, &n);
}
#else /* FFT_FIXED_32 */
#if FFT_FLOAT
@ -515,10 +517,11 @@ DECL_FFT(8192,4096,2048)
DECL_FFT(16384,8192,4096)
DECL_FFT(32768,16384,8192)
DECL_FFT(65536,32768,16384)
DECL_FFT(131072,65536,32768)
static void (* const fft_dispatch[])(FFTComplex*) = {
fft4, fft8, fft16, fft32, fft64, fft128, fft256, fft512, fft1024,
fft2048, fft4096, fft8192, fft16384, fft32768, fft65536,
fft2048, fft4096, fft8192, fft16384, fft32768, fft65536, fft131072
};
static void fft_calc_c(FFTContext *s, FFTComplex *z)

5
libavcodec/mips/fft_mips.c
View File

@ -500,7 +500,10 @@ av_cold void ff_fft_init_mips(FFTContext *s)
{
int n=0;
ff_fft_lut_init(ff_fft_offsets_lut, 0, 1 << 16, &n);
if (s->nbits > 16)
return;
ff_fft_lut_init(ff_fft_offsets_lut, 0, 1 << 17, &n);
ff_init_ff_cos_tabs(16);
#if HAVE_INLINE_ASM

4
libavcodec/x86/fft.asm
View File

@ -73,7 +73,7 @@ ps_m1p1: dd 1<<31, 0
cextern ps_neg
%assign i 16
%rep 13
%rep 14
cextern cos_ %+ i
%assign i i<<1
%endrep
@ -756,7 +756,7 @@ DECL_PASS pass_interleave_3dnow, PASS_BIG 0
%endif
%assign n 1<<%1
%rep 17-%1
%rep 18-%1
%assign n2 n/2
%assign n4 n/4
%xdefine list_of_fft list_of_fft, fft %+ n %+ fullsuffix SECTION_REL