[FFmpeg-cvslog] avcodec: Extend fft to size 2^17
Michael Niedermayer
git at videolan.org
Fri Mar 4 13:52:37 CET 2016
ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Fri Mar 4 00:31:45 2016 +0100| [ae76b842213380758adf4828b8602ac57a7492e4] | committer: Michael Niedermayer
avcodec: Extend fft to size 2^17
Asked-for-by: durandal_1707
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ae76b842213380758adf4828b8602ac57a7492e4
---
libavcodec/fft.h | 3 +-
libavcodec/fft_init_table.c | 386 ++++++++++++++++++++++++++++---------------
libavcodec/fft_table.h | 2 +-
libavcodec/fft_template.c | 9 +-
libavcodec/mips/fft_mips.c | 5 +-
libavcodec/x86/fft.asm | 4 +-
6 files changed, 272 insertions(+), 137 deletions(-)
diff --git a/libavcodec/fft.h b/libavcodec/fft.h
index 64f0f63..60df239 100644
--- a/libavcodec/fft.h
+++ b/libavcodec/fft.h
@@ -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)
diff --git a/libavcodec/fft_init_table.c b/libavcodec/fft_init_table.c
index 4d74f8a..c488018 100644
--- a/libavcodec/fft_init_table.c
+++ b/libavcodec/fft_init_table.c
@@ -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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+393075166, 391455778, 389836160, 388216313, 386596237, 384975934, 383355404, 381734649,
+380113669, 378492466, 376871039, 375249392, 373627523, 372005435, 370383128, 368760603,
+367137861, 365514903, 363891730, 362268343, 360644742, 359020930, 357396906, 355772673,
+354148230, 352523578, 350898719, 349273654, 347648383, 346022908, 344397230, 342771348,
+341145265, 339518981, 337892498, 336265816, 334638936, 333011859, 331384586, 329757119,
+328129457, 326501602, 324873555, 323245317, 321616889, 319988272, 318359466, 316730474,
+315101295, 313471930, 311842381, 310212649, 308582734, 306952638, 305322361, 303691904,
+302061269, 300430456, 298799466, 297168301, 295536961, 293905447, 292273760, 290641901,
+289009871, 287377671, 285745302, 284112765, 282480061, 280847190, 279214155, 277580955,
+275947592, 274314066, 272680379, 271046532, 269412525, 267778360, 266144038, 264509558,
+262874923, 261240134, 259605191, 257970095, 256334847, 254699448, 253063900, 251428203,
+249792358, 248156366, 246520228, 244883945, 243247518, 241610947, 239974235, 238337382,
+236700388, 235063255, 233425984, 231788575, 230151030, 228513350, 226875535, 225237587,
+223599506, 221961294, 220322951, 218684479, 217045878, 215407149, 213768293, 212129312,
+210490206, 208850976, 207211624, 205572149, 203932553, 202292838, 200653003, 199013051,
+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)
{
diff --git a/libavcodec/fft_table.h b/libavcodec/fft_table.h
index e5e54b6..ed0a658 100644
--- a/libavcodec/fft_table.h
+++ b/libavcodec/fft_table.h
@@ -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[];
diff --git a/libavcodec/fft_template.c b/libavcodec/fft_template.c
index 23ea453..2781a33 100644
--- a/libavcodec/fft_template.c
+++ b/libavcodec/fft_template.c
@@ -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)
diff --git a/libavcodec/mips/fft_mips.c b/libavcodec/mips/fft_mips.c
index cf008c6..e00778b 100644
--- a/libavcodec/mips/fft_mips.c
+++ b/libavcodec/mips/fft_mips.c
@@ -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
diff --git a/libavcodec/x86/fft.asm b/libavcodec/x86/fft.asm
index 22d9866..cdbfd66 100644
--- a/libavcodec/x86/fft.asm
+++ b/libavcodec/x86/fft.asm
@@ -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
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