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-rw-r--r--doc/mips.txt5
-rw-r--r--libavcodec/Makefile4
-rw-r--r--libavcodec/fft-fixed32-test.c21
-rw-r--r--libavcodec/fft-internal.h21
-rw-r--r--libavcodec/fft-test.c4
-rw-r--r--libavcodec/fft.c181
-rw-r--r--libavcodec/fft.h19
-rw-r--r--libavcodec/fft_fixed.c1
-rw-r--r--libavcodec/fft_fixed_32.c (renamed from libavcodec/mips/fft_init_table.c)27
-rw-r--r--libavcodec/fft_float.c1
-rw-r--r--libavcodec/fft_init_table.c200
-rw-r--r--libavcodec/fft_table.h (renamed from libavcodec/mips/fft_table.h)13
-rw-r--r--libavcodec/mdct.c4
-rw-r--r--libavcodec/mdct_fixed.c1
-rw-r--r--libavcodec/mdct_fixed_32.c52
-rw-r--r--libavcodec/mdct_float.c1
-rw-r--r--libavcodec/mips/Makefile1
-rw-r--r--libavcodec/mips/fft_mips.c2
-rw-r--r--tests/fate/fft.mak21
19 files changed, 543 insertions, 36 deletions
diff --git a/doc/mips.txt b/doc/mips.txt
index 051b8196b2..8c6779f67d 100644
--- a/doc/mips.txt
+++ b/doc/mips.txt
@@ -47,6 +47,11 @@ Files that have MIPS copyright notice in them:
* libavutil/mips/
float_dsp_mips.c
libm_mips.h
+* libavcodec/
+ fft_fixed_32.c
+ fft_init_table.c
+ fft_table.h
+ mdct_fixed_32.c
* libavcodec/mips/
aaccoder_mips.c
aacpsy_mips.h
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 31477acccc..2a90bbe10d 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -44,6 +44,7 @@ OBJS-$(CONFIG_ENCODERS) += faandct.o jfdctfst.o jfdctint.o
OBJS-$(CONFIG_ERROR_RESILIENCE) += error_resilience.o
FFT-OBJS-$(CONFIG_HARDCODED_TABLES) += cos_tables.o cos_fixed_tables.o
OBJS-$(CONFIG_FFT) += avfft.o fft_fixed.o fft_float.o \
+ fft_fixed_32.o fft_init_table.o \
$(FFT-OBJS-yes)
OBJS-$(CONFIG_GOLOMB) += golomb.o
OBJS-$(CONFIG_H264CHROMA) += h264chroma.o
@@ -55,7 +56,7 @@ OBJS-$(CONFIG_HUFFMAN) += huffman.o
OBJS-$(CONFIG_LIBXVID) += libxvid_rc.o
OBJS-$(CONFIG_LPC) += lpc.o
OBJS-$(CONFIG_LSP) += lsp.o
-OBJS-$(CONFIG_MDCT) += mdct_fixed.o mdct_float.o
+OBJS-$(CONFIG_MDCT) += mdct_fixed.o mdct_float.o mdct_fixed_32.o
OBJS-$(CONFIG_MPEGAUDIO) += mpegaudio.o mpegaudiodata.o \
mpegaudiodecheader.o
OBJS-$(CONFIG_MPEGAUDIODSP) += mpegaudiodsp.o \
@@ -811,6 +812,7 @@ TESTPROGS = cabac \
dct \
fft \
fft-fixed \
+ fft-fixed32 \
golomb \
iirfilter \
imgconvert \
diff --git a/libavcodec/fft-fixed32-test.c b/libavcodec/fft-fixed32-test.c
new file mode 100644
index 0000000000..89cd47c1da
--- /dev/null
+++ b/libavcodec/fft-fixed32-test.c
@@ -0,0 +1,21 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define CONFIG_FFT_FLOAT 0
+#define CONFIG_FFT_FIXED_32 1
+#include "fft-test.c"
diff --git a/libavcodec/fft-internal.h b/libavcodec/fft-internal.h
index d66731fb48..065eeccef1 100644
--- a/libavcodec/fft-internal.h
+++ b/libavcodec/fft-internal.h
@@ -36,12 +36,29 @@
#else
+#define SCALE_FLOAT(a, bits) lrint((a) * (double)(1 << (bits)))
+
+#if CONFIG_FFT_FIXED_32
+
+#define CMUL(dre, dim, are, aim, bre, bim) do { \
+ int64_t accu; \
+ (accu) = (int64_t)(bre) * (are); \
+ (accu) -= (int64_t)(bim) * (aim); \
+ (dre) = (int)(((accu) + 0x40000000) >> 31); \
+ (accu) = (int64_t)(bre) * (aim); \
+ (accu) += (int64_t)(bim) * (are); \
+ (dim) = (int)(((accu) + 0x40000000) >> 31); \
+ } while (0)
+
+#define FIX15(a) av_clip(SCALE_FLOAT(a, 31), -2147483647, 2147483647)
+
+#else /* CONFIG_FFT_FIXED_32 */
+
#include "fft.h"
#include "mathops.h"
void ff_mdct_calcw_c(FFTContext *s, FFTDouble *output, const FFTSample *input);
-#define SCALE_FLOAT(a, bits) lrint((a) * (double)(1 << (bits)))
#define FIX15(a) av_clip(SCALE_FLOAT(a, 15), -32767, 32767)
#define sqrthalf ((int16_t)((1<<15)*M_SQRT1_2))
@@ -62,6 +79,8 @@ void ff_mdct_calcw_c(FFTContext *s, FFTDouble *output, const FFTSample *input);
#define CMULL(dre, dim, are, aim, bre, bim) \
CMULS(dre, dim, are, aim, bre, bim, 0)
+#endif /* CONFIG_FFT_FIXED_32 */
+
#endif /* CONFIG_FFT_FLOAT */
#define ff_imdct_calc_c FFT_NAME(ff_imdct_calc_c)
diff --git a/libavcodec/fft-test.c b/libavcodec/fft-test.c
index 66474cecd8..9831b2cf25 100644
--- a/libavcodec/fft-test.c
+++ b/libavcodec/fft-test.c
@@ -54,6 +54,10 @@
# define RANGE 1.0
# define REF_SCALE(x, bits) (x)
# define FMT "%10.6f"
+#elif CONFIG_FFT_FIXED_32
+# define RANGE 8388608
+# define REF_SCALE(x, bits) (x)
+# define FMT "%6d"
#else
# define RANGE 16384
# define REF_SCALE(x, bits) ((x) / (1<<(bits)))
diff --git a/libavcodec/fft.c b/libavcodec/fft.c
index 84d236d558..5244dcaa8e 100644
--- a/libavcodec/fft.c
+++ b/libavcodec/fft.c
@@ -32,6 +32,10 @@
#include "fft.h"
#include "fft-internal.h"
+#if CONFIG_FFT_FIXED_32
+#include "fft_table.h"
+#else /* CONFIG_FFT_FIXED_32 */
+
/* cos(2*pi*x/n) for 0<=x<=n/4, followed by its reverse */
#if !CONFIG_HARDCODED_TABLES
COSTABLE(16);
@@ -65,6 +69,8 @@ COSTABLE_CONST FFTSample * const FFT_NAME(ff_cos_tabs)[] = {
FFT_NAME(ff_cos_65536),
};
+#endif /* CONFIG_FFT_FIXED_32 */
+
static void fft_permute_c(FFTContext *s, FFTComplex *z);
static void fft_calc_c(FFTContext *s, FFTComplex *z);
@@ -81,7 +87,7 @@ static int split_radix_permutation(int i, int n, int inverse)
av_cold void ff_init_ff_cos_tabs(int index)
{
-#if !CONFIG_HARDCODED_TABLES
+#if (!CONFIG_HARDCODED_TABLES) && (!CONFIG_FFT_FIXED_32)
int i;
int m = 1<<index;
double freq = 2*M_PI/m;
@@ -157,6 +163,12 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)
s->mdct_calc = ff_mdct_calc_c;
#endif
+#if CONFIG_FFT_FIXED_32
+ {
+ int n=0;
+ ff_fft_lut_init(fft_offsets_lut, 0, 1 << 16, &n);
+ }
+#else /* CONFIG_FFT_FIXED_32 */
#if CONFIG_FFT_FLOAT
if (ARCH_ARM) ff_fft_init_arm(s);
if (ARCH_PPC) ff_fft_init_ppc(s);
@@ -167,10 +179,11 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)
if (CONFIG_MDCT) s->mdct_calcw = ff_mdct_calcw_c;
if (ARCH_ARM) ff_fft_fixed_init_arm(s);
#endif
-
for(j=4; j<=nbits; j++) {
ff_init_ff_cos_tabs(j);
}
+#endif /* CONFIG_FFT_FIXED_32 */
+
if (s->fft_permutation == FF_FFT_PERM_AVX) {
fft_perm_avx(s);
@@ -206,6 +219,169 @@ av_cold void ff_fft_end(FFTContext *s)
av_freep(&s->tmp_buf);
}
+#if CONFIG_FFT_FIXED_32
+
+static void fft_calc_c(FFTContext *s, FFTComplex *z) {
+
+ int nbits, i, n, num_transforms, offset, step;
+ int n4, n2, n34;
+ FFTSample tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
+ FFTComplex *tmpz;
+ FFTSample w_re, w_im;
+ FFTSample *w_re_ptr, *w_im_ptr;
+ const int fft_size = (1 << s->nbits);
+ int64_t accu;
+
+ num_transforms = (0x2aab >> (16 - s->nbits)) | 1;
+
+ for (n=0; n<num_transforms; n++){
+ offset = fft_offsets_lut[n] << 2;
+ tmpz = z + offset;
+
+ tmp1 = tmpz[0].re + tmpz[1].re;
+ tmp5 = tmpz[2].re + tmpz[3].re;
+ tmp2 = tmpz[0].im + tmpz[1].im;
+ tmp6 = tmpz[2].im + tmpz[3].im;
+ tmp3 = tmpz[0].re - tmpz[1].re;
+ tmp8 = tmpz[2].im - tmpz[3].im;
+ tmp4 = tmpz[0].im - tmpz[1].im;
+ tmp7 = tmpz[2].re - tmpz[3].re;
+
+ tmpz[0].re = tmp1 + tmp5;
+ tmpz[2].re = tmp1 - tmp5;
+ tmpz[0].im = tmp2 + tmp6;
+ tmpz[2].im = tmp2 - tmp6;
+ tmpz[1].re = tmp3 + tmp8;
+ tmpz[3].re = tmp3 - tmp8;
+ tmpz[1].im = tmp4 - tmp7;
+ tmpz[3].im = tmp4 + tmp7;
+ }
+
+ if (fft_size < 8)
+ return;
+
+ num_transforms = (num_transforms >> 1) | 1;
+
+ for (n=0; n<num_transforms; n++){
+ offset = fft_offsets_lut[n] << 3;
+ tmpz = z + offset;
+
+ tmp1 = tmpz[4].re + tmpz[5].re;
+ tmp3 = tmpz[6].re + tmpz[7].re;
+ tmp2 = tmpz[4].im + tmpz[5].im;
+ tmp4 = tmpz[6].im + tmpz[7].im;
+ tmp5 = tmp1 + tmp3;
+ tmp7 = tmp1 - tmp3;
+ tmp6 = tmp2 + tmp4;
+ tmp8 = tmp2 - tmp4;
+
+ tmp1 = tmpz[4].re - tmpz[5].re;
+ tmp2 = tmpz[4].im - tmpz[5].im;
+ tmp3 = tmpz[6].re - tmpz[7].re;
+ tmp4 = tmpz[6].im - tmpz[7].im;
+
+ tmpz[4].re = tmpz[0].re - tmp5;
+ tmpz[0].re = tmpz[0].re + tmp5;
+ tmpz[4].im = tmpz[0].im - tmp6;
+ tmpz[0].im = tmpz[0].im + tmp6;
+ tmpz[6].re = tmpz[2].re - tmp8;
+ tmpz[2].re = tmpz[2].re + tmp8;
+ tmpz[6].im = tmpz[2].im + tmp7;
+ tmpz[2].im = tmpz[2].im - tmp7;
+
+ accu = (int64_t)Q31(M_SQRT1_2)*(tmp1 + tmp2);
+ tmp5 = (int32_t)((accu + 0x40000000) >> 31);
+ accu = (int64_t)Q31(M_SQRT1_2)*(tmp3 - tmp4);
+ tmp7 = (int32_t)((accu + 0x40000000) >> 31);
+ accu = (int64_t)Q31(M_SQRT1_2)*(tmp2 - tmp1);
+ tmp6 = (int32_t)((accu + 0x40000000) >> 31);
+ accu = (int64_t)Q31(M_SQRT1_2)*(tmp3 + tmp4);
+ tmp8 = (int32_t)((accu + 0x40000000) >> 31);
+ tmp1 = tmp5 + tmp7;
+ tmp3 = tmp5 - tmp7;
+ tmp2 = tmp6 + tmp8;
+ tmp4 = tmp6 - tmp8;
+
+ tmpz[5].re = tmpz[1].re - tmp1;
+ tmpz[1].re = tmpz[1].re + tmp1;
+ tmpz[5].im = tmpz[1].im - tmp2;
+ tmpz[1].im = tmpz[1].im + tmp2;
+ tmpz[7].re = tmpz[3].re - tmp4;
+ tmpz[3].re = tmpz[3].re + tmp4;
+ tmpz[7].im = tmpz[3].im + tmp3;
+ tmpz[3].im = tmpz[3].im - tmp3;
+ }
+
+ step = 1 << ((MAX_LOG2_NFFT-4) - 4);
+ n4 = 4;
+
+ for (nbits=4; nbits<=s->nbits; nbits++){
+ n2 = 2*n4;
+ n34 = 3*n4;
+ num_transforms = (num_transforms >> 1) | 1;
+
+ for (n=0; n<num_transforms; n++){
+ offset = fft_offsets_lut[n] << nbits;
+ tmpz = z + offset;
+
+ tmp5 = tmpz[ n2].re + tmpz[n34].re;
+ tmp1 = tmpz[ n2].re - tmpz[n34].re;
+ tmp6 = tmpz[ n2].im + tmpz[n34].im;
+ tmp2 = tmpz[ n2].im - tmpz[n34].im;
+
+ tmpz[ n2].re = tmpz[ 0].re - tmp5;
+ tmpz[ 0].re = tmpz[ 0].re + tmp5;
+ tmpz[ n2].im = tmpz[ 0].im - tmp6;
+ tmpz[ 0].im = tmpz[ 0].im + tmp6;
+ tmpz[n34].re = tmpz[n4].re - tmp2;
+ tmpz[ n4].re = tmpz[n4].re + tmp2;
+ tmpz[n34].im = tmpz[n4].im + tmp1;
+ tmpz[ n4].im = tmpz[n4].im - tmp1;
+
+ w_re_ptr = w_tab_sr + step;
+ w_im_ptr = w_tab_sr + MAX_FFT_SIZE/(4*16) - step;
+
+ for (i=1; i<n4; i++){
+ w_re = w_re_ptr[0];
+ w_im = w_im_ptr[0];
+ accu = (int64_t)w_re*tmpz[ n2+i].re;
+ accu += (int64_t)w_im*tmpz[ n2+i].im;
+ tmp1 = (int32_t)((accu + 0x40000000) >> 31);
+ accu = (int64_t)w_re*tmpz[ n2+i].im;
+ accu -= (int64_t)w_im*tmpz[ n2+i].re;
+ tmp2 = (int32_t)((accu + 0x40000000) >> 31);
+ accu = (int64_t)w_re*tmpz[n34+i].re;
+ accu -= (int64_t)w_im*tmpz[n34+i].im;
+ tmp3 = (int32_t)((accu + 0x40000000) >> 31);
+ accu = (int64_t)w_re*tmpz[n34+i].im;
+ accu += (int64_t)w_im*tmpz[n34+i].re;
+ tmp4 = (int32_t)((accu + 0x40000000) >> 31);
+
+ tmp5 = tmp1 + tmp3;
+ tmp1 = tmp1 - tmp3;
+ tmp6 = tmp2 + tmp4;
+ tmp2 = tmp2 - tmp4;
+
+ tmpz[ n2+i].re = tmpz[ i].re - tmp5;
+ tmpz[ i].re = tmpz[ i].re + tmp5;
+ tmpz[ n2+i].im = tmpz[ i].im - tmp6;
+ tmpz[ i].im = tmpz[ i].im + tmp6;
+ tmpz[n34+i].re = tmpz[n4+i].re - tmp2;
+ tmpz[ n4+i].re = tmpz[n4+i].re + tmp2;
+ tmpz[n34+i].im = tmpz[n4+i].im + tmp1;
+ tmpz[ n4+i].im = tmpz[n4+i].im - tmp1;
+
+ w_re_ptr += step;
+ w_im_ptr -= step;
+ }
+ }
+ step >>= 1;
+ n4 <<= 1;
+ }
+}
+
+#else /* CONFIG_FFT_FIXED_32 */
+
#define BUTTERFLIES(a0,a1,a2,a3) {\
BF(t3, t5, t5, t1);\
BF(a2.re, a0.re, a0.re, t5);\
@@ -351,3 +527,4 @@ static void fft_calc_c(FFTContext *s, FFTComplex *z)
{
fft_dispatch[s->nbits-2](z);
}
+#endif /* CONFIG_FFT_FIXED_32 */
diff --git a/libavcodec/fft.h b/libavcodec/fft.h
index 910e143f5a..217090cf2a 100644
--- a/libavcodec/fft.h
+++ b/libavcodec/fft.h
@@ -26,6 +26,10 @@
#define CONFIG_FFT_FLOAT 1
#endif
+#ifndef CONFIG_FFT_FIXED_32
+#define CONFIG_FFT_FIXED_32 0
+#endif
+
#include <stdint.h>
#include "config.h"
#include "libavutil/mem.h"
@@ -40,15 +44,26 @@ typedef float FFTDouble;
#else
+#if CONFIG_FFT_FIXED_32
+
+#define Q31(x) (int)((x)*2147483648.0 + 0.5)
+#define FFT_NAME(x) x ## _fixed_32
+
+typedef int32_t FFTSample;
+
+#else /* CONFIG_FFT_FIXED_32 */
+
#define FFT_NAME(x) x ## _fixed
typedef int16_t FFTSample;
-typedef int FFTDouble;
+
+#endif /* CONFIG_FFT_FIXED_32 */
typedef struct FFTComplex {
- int16_t re, im;
+ FFTSample re, im;
} FFTComplex;
+typedef int FFTDouble;
typedef struct FFTContext FFTContext;
#endif /* CONFIG_FFT_FLOAT */
diff --git a/libavcodec/fft_fixed.c b/libavcodec/fft_fixed.c
index 3955efea05..153b7d845d 100644
--- a/libavcodec/fft_fixed.c
+++ b/libavcodec/fft_fixed.c
@@ -17,4 +17,5 @@
*/
#define CONFIG_FFT_FLOAT 0
+#define CONFIG_FFT_FIXED_32 0
#include "fft.c"
diff --git a/libavcodec/mips/fft_init_table.c b/libavcodec/fft_fixed_32.c
index 9c2e998e9c..f2954d7d26 100644
--- a/libavcodec/mips/fft_init_table.c
+++ b/libavcodec/fft_fixed_32.c
@@ -26,7 +26,9 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * Author: Stanislav Ocovaj (socovaj@mips.com)
+ * Authors: Stanislav Ocovaj (socovaj@mips.com)
+ * Goran Cordasic (goran@mips.com)
+ * Djordje Pesut (djordje@mips.com)
*
* This file is part of FFmpeg.
*
@@ -45,23 +47,6 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-/**
- * @file
- * definitions and initialization of LUT table for MIPS FFT
- */
-#include "fft_table.h"
-
-uint16_t fft_offsets_lut[0x2aab];
-
-void ff_fft_lut_init(uint16_t *table, int off, int size, int *index)
-{
- if (size < 16) {
- table[*index] = off >> 2;
- (*index)++;
- }
- else {
- ff_fft_lut_init(table, off, size>>1, index);
- ff_fft_lut_init(table, off+(size>>1), size>>2, index);
- ff_fft_lut_init(table, off+3*(size>>2), size>>2, index);
- }
-}
+#define CONFIG_FFT_FLOAT 0
+#define CONFIG_FFT_FIXED_32 1
+#include "fft.c"
diff --git a/libavcodec/fft_float.c b/libavcodec/fft_float.c
index 214964631b..011dc45904 100644
--- a/libavcodec/fft_float.c
+++ b/libavcodec/fft_float.c
@@ -17,4 +17,5 @@
*/
#define CONFIG_FFT_FLOAT 1
+#define CONFIG_FFT_FIXED_32 0
#include "fft.c"
diff --git a/libavcodec/fft_init_table.c b/libavcodec/fft_init_table.c
new file mode 100644
index 0000000000..7511dbecd9
--- /dev/null
+++ b/libavcodec/fft_init_table.c
@@ -0,0 +1,200 @@
+/*
+ * Copyright (c) 2012
+ * MIPS Technologies, Inc., California.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Authors: Stanislav Ocovaj (socovaj@mips.com)
+ * Goran Cordasic (goran@mips.com)
+ * Djordje Pesut (djordje@mips.com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * definitions and initialization of LUT table for FFT
+ */
+#include "libavcodec/fft_table.h"
+
+int32_t w_tab_sr[MAX_FFT_SIZE/(4*16)] = {
+ 2147483647, 2147481121, 2147473542, 2147460908, 2147443222, 2147420483, 2147392690, 2147359845,
+ 2147321946, 2147278995, 2147230991, 2147177934, 2147119825, 2147056664, 2146988450, 2146915184,
+ 2146836866, 2146753497, 2146665076, 2146571603, 2146473080, 2146369505, 2146260881, 2146147205,
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+ 2143442326, 2143237802, 2143028234, 2142813624, 2142593971, 2142369276, 2142139541, 2141904764,
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+ 2047209133, 2046211857, 2045209767, 2044202863, 2043191150, 2042174628, 2041153301, 2040127172,
+ 2039096241, 2038060512, 2037019988, 2035974670, 2034924562, 2033869665, 2032809982, 2031745516,
+ 2030676269, 2029602243, 2028523442, 2027439867, 2026351522, 2025258408, 2024160529, 2023057887,
+ 2021950484, 2020838323, 2019721407, 2018599739, 2017473321, 2016342155, 2015206245, 2014065592,
+ 2012920201, 2011770073, 2010615210, 2009455617, 2008291295, 2007122248, 2005948478, 2004769987,
+ 2003586779, 2002398857, 2001206222, 2000008879, 1998806829, 1997600076, 1996388622, 1995172471,
+ 1993951625, 1992726087, 1991495860, 1990260946, 1989021350, 1987777073, 1986528118, 1985274489,
+ 1984016189, 1982753220, 1981485585, 1980213288, 1978936331, 1977654717, 1976368450, 1975077532,
+ 1973781967, 1972481757, 1971176906, 1969867417, 1968553292, 1967234535, 1965911148, 1964583136,
+ 1963250501, 1961913246, 1960571375, 1959224890, 1957873796, 1956518093, 1955157788, 1953792881,
+ 1952423377, 1951049279, 1949670589, 1948287312, 1946899451, 1945507008, 1944109987, 1942708392,
+ 1941302225, 1939891490, 1938476190, 1937056329, 1935631910, 1934202936, 1932769411, 1931331338,
+ 1929888720, 1928441561, 1926989864, 1925533633, 1924072871, 1922607581, 1921137767, 1919663432,
+ 1918184581, 1916701216, 1915213340, 1913720958, 1912224073, 1910722688, 1909216806, 1907706433,
+ 1906191570, 1904672222, 1903148392, 1901620084, 1900087301, 1898550047, 1897008325, 1895462140,
+ 1893911494, 1892356392, 1890796837, 1889232832, 1887664383, 1886091491, 1884514161, 1882932397,
+ 1881346202, 1879755580, 1878160535, 1876561070, 1874957189, 1873348897, 1871736196, 1870119091,
+ 1868497586, 1866871683, 1865241388, 1863606704, 1861967634, 1860324183, 1858676355, 1857024153,
+ 1855367581, 1853706643, 1852041343, 1850371686, 1848697674, 1847019312, 1845336604, 1843649553,
+ 1841958164, 1840262441, 1838562388, 1836858008, 1835149306, 1833436286, 1831718951, 1829997307,
+ 1828271356, 1826541103, 1824806552, 1823067707, 1821324572, 1819577151, 1817825449, 1816069469,
+ 1814309216, 1812544694, 1810775906, 1809002858, 1807225553, 1805443995, 1803658189, 1801868139,
+ 1800073849, 1798275323, 1796472565, 1794665580, 1792854372, 1791038946, 1789219305, 1787395453,
+ 1785567396, 1783735137, 1781898681, 1780058032, 1778213194, 1776364172, 1774510970, 1772653593,
+ 1770792044, 1768926328, 1767056450, 1765182414, 1763304224, 1761421885, 1759535401, 1757644777,
+ 1755750017, 1753851126, 1751948107, 1750040966, 1748129707, 1746214334, 1744294853, 1742371267,
+ 1740443581, 1738511799, 1736575927, 1734635968, 1732691928, 1730743810, 1728791620, 1726835361,
+ 1724875040, 1722910659, 1720942225, 1718969740, 1716993211, 1715012642, 1713028037, 1711039401,
+ 1709046739, 1707050055, 1705049355, 1703044642, 1701035922, 1699023199, 1697006479, 1694985765,
+ 1692961062, 1690932376, 1688899711, 1686863072, 1684822463, 1682777890, 1680729357, 1678676870,
+ 1676620432, 1674560049, 1672495725, 1670427466, 1668355276, 1666279161, 1664199124, 1662115172,
+ 1660027308, 1657935539, 1655839867, 1653740300, 1651636841, 1649529496, 1647418269, 1645303166,
+ 1643184191, 1641061349, 1638934646, 1636804087, 1634669676, 1632531418, 1630389319, 1628243383,
+ 1626093616, 1623940023, 1621782608, 1619621377, 1617456335, 1615287487, 1613114838, 1610938393,
+ 1608758157, 1606574136, 1604386335, 1602194758, 1599999411, 1597800299, 1595597428, 1593390801,
+ 1591180426, 1588966306, 1586748447, 1584526854, 1582301533, 1580072489, 1577839726, 1575603251,
+ 1573363068, 1571119183, 1568871601, 1566620327, 1564365367, 1562106725, 1559844408, 1557578421,
+ 1555308768, 1553035455, 1550758488, 1548477872, 1546193612, 1543905714, 1541614183, 1539319024,
+ 1537020244, 1534717846, 1532411837, 1530102222, 1527789007, 1525472197, 1523151797, 1520827813,
+ 1518500250, 1516169114, 1513834411, 1511496145, 1509154322, 1506808949, 1504460029, 1502107570,
+ 1499751576, 1497392053, 1495029006, 1492662441, 1490292364, 1487918781, 1485541696, 1483161115,
+ 1480777044, 1478389489, 1475998456, 1473603949, 1471205974, 1468804538, 1466399645, 1463991302,
+ 1461579514, 1459164286, 1456745625, 1454323536, 1451898025, 1449469098, 1447036760, 1444601017,
+ 1442161874, 1439719338, 1437273414, 1434824109, 1432371426, 1429915374, 1427455956, 1424993180,
+ 1422527051, 1420057574, 1417584755, 1415108601, 1412629117, 1410146309, 1407660183, 1405170745,
+ 1402678000, 1400181954, 1397682613, 1395179984, 1392674072, 1390164882, 1387652422, 1385136696,
+ 1382617710, 1380095472, 1377569986, 1375041258, 1372509294, 1369974101, 1367435685, 1364894050,
+ 1362349204, 1359801152, 1357249901, 1354695455, 1352137822, 1349577007, 1347013017, 1344445857,
+ 1341875533, 1339302052, 1336725419, 1334145641, 1331562723, 1328976672, 1326387494, 1323795195,
+ 1321199781, 1318601257, 1315999631, 1313394909, 1310787095, 1308176198, 1305562222, 1302945174,
+ 1300325060, 1297701886, 1295075659, 1292446384, 1289814068, 1287178717, 1284540337, 1281898935,
+ 1279254516, 1276607086, 1273956653, 1271303222, 1268646800, 1265987392, 1263325005, 1260659646,
+ 1257991320, 1255320034, 1252645794, 1249968606, 1247288478, 1244605414, 1241919421, 1239230506,
+ 1236538675, 1233843935, 1231146291, 1228445750, 1225742318, 1223036002, 1220326809, 1217614743,
+ 1214899813, 1212182024, 1209461382, 1206737894, 1204011567, 1201282407, 1198550419, 1195815612,
+ 1193077991, 1190337562, 1187594332, 1184848308, 1182099496, 1179347902, 1176593533, 1173836395,
+ 1171076495, 1168313840, 1165548435, 1162780288, 1160009405, 1157235792, 1154459456, 1151680403,
+ 1148898640, 1146114174, 1143327011, 1140537158, 1137744621, 1134949406, 1132151521, 1129350972,
+ 1126547765, 1123741908, 1120933406, 1118122267, 1115308496, 1112492101, 1109673089, 1106851465,
+ 1104027237, 1101200410, 1098370993, 1095538991, 1092704411, 1089867259, 1087027544, 1084185270,
+ 1081340445, 1078493076, 1075643169, 1072790730, 1069935768, 1067078288, 1064218296, 1061355801,
+ 1058490808, 1055623324, 1052753357, 1049880912, 1047005996, 1044128617, 1041248781, 1038366495,
+ 1035481766, 1032594600, 1029705004, 1026812985, 1023918550, 1021021705, 1018122458, 1015220816,
+ 1012316784, 1009410370, 1006501581, 1003590424, 1000676905, 997761031, 994842810, 991922248,
+ 988999351, 986074127, 983146583, 980216726, 977284562, 974350098, 971413342, 968474300,
+ 965532978, 962589385, 959643527, 956695411, 953745043, 950792431, 947837582, 944880503,
+ 941921200, 938959681, 935995952, 933030021, 930061894, 927091579, 924119082, 921144411,
+ 918167572, 915188572, 912207419, 909224120, 906238681, 903251110, 900261413, 897269597,
+ 894275671, 891279640, 888281512, 885281293, 882278992, 879274614, 876268167, 873259659,
+ 870249095, 867236484, 864221832, 861205147, 858186435, 855165703, 852142959, 849118210,
+ 846091463, 843062726, 840032004, 836999305, 833964638, 830928007, 827889422, 824848888,
+ 821806413, 818762005, 815715670, 812667415, 809617249, 806565177, 803511207, 800455346,
+ 797397602, 794337982, 791276492, 788213141, 785147934, 782080880, 779011986, 775941259,
+ 772868706, 769794334, 766718151, 763640164, 760560380, 757478806, 754395449, 751310318,
+ 748223418, 745134758, 742044345, 738952186, 735858287, 732762657, 729665303, 726566232,
+ 723465451, 720362968, 717258790, 714152924, 711045377, 707936158, 704825272, 701712728,
+ 698598533, 695482694, 692365218, 689246113, 686125387, 683003045, 679879097, 676753549,
+ 673626408, 670497682, 667367379, 664235505, 661102068, 657967075, 654830535, 651692453,
+ 648552838, 645411696, 642269036, 639124865, 635979190, 632832018, 629683357, 626533215,
+ 623381598, 620228514, 617073971, 613917975, 610760536, 607601658, 604441352, 601279623,
+ 598116479, 594951927, 591785976, 588618632, 585449903, 582279796, 579108320, 575935480,
+ 572761285, 569585743, 566408860, 563230645, 560051104, 556870245, 553688076, 550504604,
+ 547319836, 544133781, 540946445, 537757837, 534567963, 531376831, 528184449, 524990824,
+ 521795963, 518599875, 515402566, 512204045, 509004318, 505803394, 502601279, 499397982,
+ 496193509, 492987869, 489781069, 486573117, 483364019, 480153784, 476942419, 473729932,
+ 470516330, 467301622, 464085813, 460868912, 457650927, 454431865, 451211734, 447990541,
+ 444768294, 441545000, 438320667, 435095303, 431868915, 428641511, 425413098, 422183684,
+ 418953276, 415721883, 412489512, 409256170, 406021865, 402786604, 399550396, 396313247,
+ 393075166, 389836160, 386596237, 383355404, 380113669, 376871039, 373627523, 370383128,
+ 367137861, 363891730, 360644742, 357396906, 354148230, 350898719, 347648383, 344397230,
+ 341145265, 337892498, 334638936, 331384586, 328129457, 324873555, 321616889, 318359466,
+ 315101295, 311842381, 308582734, 305322361, 302061269, 298799466, 295536961, 292273760,
+ 289009871, 285745302, 282480061, 279214155, 275947592, 272680379, 269412525, 266144038,
+ 262874923, 259605191, 256334847, 253063900, 249792358, 246520228, 243247518, 239974235,
+ 236700388, 233425984, 230151030, 226875535, 223599506, 220322951, 217045878, 213768293,
+ 210490206, 207211624, 203932553, 200653003, 197372981, 194092495, 190811551, 187530159,
+ 184248325, 180966058, 177683365, 174400254, 171116733, 167832808, 164548489, 161263783,
+ 157978697, 154693240, 151407418, 148121241, 144834714, 141547847, 138260647, 134973122,
+ 131685278, 128397125, 125108670, 121819921, 118530885, 115241570, 111951983, 108662134,
+ 105372028, 102081675, 98791081, 95500255, 92209205, 88917937, 85626460, 82334782,
+ 79042909, 75750851, 72458615, 69166208, 65873638, 62580914, 59288042, 55995030,
+ 52701887, 49408620, 46115236, 42821744, 39528151, 36234466, 32940695, 29646846,
+ 26352928, 23058947, 19764913, 16470832, 13176712, 9882561, 6588387, 3294197
+};
+
+uint16_t fft_offsets_lut[0x2aab];
+
+void ff_fft_lut_init(uint16_t *table, int off, int size, int *index)
+{
+ if (size < 16) {
+ table[*index] = off >> 2;
+ (*index)++;
+ }
+ else {
+ ff_fft_lut_init(table, off, size>>1, index);
+ ff_fft_lut_init(table, off+(size>>1), size>>2, index);
+ ff_fft_lut_init(table, off+3*(size>>2), size>>2, index);
+ }
+}
diff --git a/libavcodec/mips/fft_table.h b/libavcodec/fft_table.h
index dd52eaf8c8..687e5b94fd 100644
--- a/libavcodec/mips/fft_table.h
+++ b/libavcodec/fft_table.h
@@ -26,7 +26,9 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * Author: Stanislav Ocovaj (socovaj@mips.com)
+ * Authors: Stanislav Ocovaj (socovaj@mips.com)
+ * Goran Cordasic (goran@mips.com)
+ * Djordje Pesut (djordje@mips.com)
*
* This file is part of FFmpeg.
*
@@ -47,17 +49,18 @@
/**
* @file
- * definitions and LUT table for MIPS FFT
+ * definitions and tables for FFT
*/
-#ifndef AVCODEC_MIPS_FFT_TABLE_H
-#define AVCODEC_MIPS_FFT_TABLE_H
+#ifndef AVCODEC_FFT_TABLE_H
+#define AVCODEC_FFT_TABLE_H
#include "libavcodec/fft.h"
#define MAX_LOG2_NFFT 16 //!< Specifies maxiumum allowed fft size
#define MAX_FFT_SIZE (1 << MAX_LOG2_NFFT)
+extern int32_t w_tab_sr[];
extern uint16_t fft_offsets_lut[];
void ff_fft_lut_init(uint16_t *table, int off, int size, int *index);
-#endif /* AVCODEC_MIPS_FFT_TABLE_H */
+#endif /* AVCODEC_FFT_TABLE_H */
diff --git a/libavcodec/mdct.c b/libavcodec/mdct.c
index 22320240de..922d577e3e 100644
--- a/libavcodec/mdct.c
+++ b/libavcodec/mdct.c
@@ -34,7 +34,11 @@
#if CONFIG_FFT_FLOAT
# define RSCALE(x) (x)
#else
+#if CONFIG_FFT_FIXED_32
+# define RSCALE(x) (((x) + 32) >> 6)
+#else /* CONFIG_FFT_FIXED_32 */
# define RSCALE(x) ((x) >> 1)
+#endif /* CONFIG_FFT_FIXED_32 */
#endif
/**
diff --git a/libavcodec/mdct_fixed.c b/libavcodec/mdct_fixed.c
index 794a3e0bc2..33a266d8cb 100644
--- a/libavcodec/mdct_fixed.c
+++ b/libavcodec/mdct_fixed.c
@@ -17,6 +17,7 @@
*/
#define CONFIG_FFT_FLOAT 0
+#define CONFIG_FFT_FIXED_32 0
#include "mdct.c"
/* same as ff_mdct_calcw_c with double-width unscaled output */
diff --git a/libavcodec/mdct_fixed_32.c b/libavcodec/mdct_fixed_32.c
new file mode 100644
index 0000000000..66226f3e69
--- /dev/null
+++ b/libavcodec/mdct_fixed_32.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2012
+ * MIPS Technologies, Inc., California.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Authors: Stanislav Ocovaj (socovaj@mips.com)
+ * Goran Cordasic (goran@mips.com)
+ * Djordje Pesut (djordje@mips.com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define CONFIG_FFT_FLOAT 0
+#define CONFIG_FFT_FIXED_32 1
+#include "mdct.c"
diff --git a/libavcodec/mdct_float.c b/libavcodec/mdct_float.c
index ec4f486f19..fec18bab36 100644
--- a/libavcodec/mdct_float.c
+++ b/libavcodec/mdct_float.c
@@ -17,4 +17,5 @@
*/
#define CONFIG_FFT_FLOAT 1
+#define CONFIG_FFT_FIXED_32 0
#include "mdct.c"
diff --git a/libavcodec/mips/Makefile b/libavcodec/mips/Makefile
index a2ea412305..6537b43110 100644
--- a/libavcodec/mips/Makefile
+++ b/libavcodec/mips/Makefile
@@ -9,7 +9,6 @@ MIPSFPU-OBJS-$(CONFIG_AMRWB_DECODER) += mips/acelp_filters_mips.o \
mips/acelp_vectors_mips.o
MIPSFPU-OBJS-$(CONFIG_MPEGAUDIODSP) += mips/mpegaudiodsp_mips_float.o
MIPSDSPR1-OBJS-$(CONFIG_MPEGAUDIODSP) += mips/mpegaudiodsp_mips_fixed.o
-OBJS-$(CONFIG_FFT) += mips/fft_init_table.o
MIPSFPU-OBJS-$(CONFIG_FFT) += mips/fft_mips.o
MIPSFPU-OBJS += mips/fmtconvert_mips.o
OBJS-$(CONFIG_AC3DSP) += mips/ac3dsp_mips.o
diff --git a/libavcodec/mips/fft_mips.c b/libavcodec/mips/fft_mips.c
index ae4ed30347..d240f1f0fb 100644
--- a/libavcodec/mips/fft_mips.c
+++ b/libavcodec/mips/fft_mips.c
@@ -49,7 +49,7 @@
*/
#include "config.h"
#include "libavcodec/fft.h"
-#include "fft_table.h"
+#include "libavcodec/fft_table.h"
/**
* FFT transform
diff --git a/tests/fate/fft.mak b/tests/fate/fft.mak
index 20d563828f..2413415c21 100644
--- a/tests/fate/fft.mak
+++ b/tests/fate/fft.mak
@@ -38,5 +38,22 @@ $(FATE_FFT_FIXED): libavcodec/fft-fixed-test$(EXESUF)
$(FATE_FFT_FIXED): CMD = run libavcodec/fft-fixed-test $(CPUFLAGS:%=-c%) $(ARGS)
$(FATE_FFT_FIXED): REF = /dev/null
-FATE-$(call ALLYES, AVCODEC FFT) += $(FATE_FFT) $(FATE_FFT_FIXED)
-fate-fft: $(FATE_FFT) $(FATE_FFT_FIXED)
+define DEF_FFT_FIXED32
+FATE_FFT_FIXED32 += fate-fft-fixed32-$(1) fate-ifft-fixed32-$(1) \
+ fate-mdct-fixed32-$(1) fate-imdct-fixed32-$(1)
+
+fate-fft-fixed32-$(1): ARGS = -n$(1)
+fate-ifft-fixed32-$(1): ARGS = -n$(1) -i
+#fate-mdct-fixed32-$(1): ARGS = -n$(1) -m
+fate-imdct-fixed32-$(1): ARGS = -n$(1) -m -i
+endef
+
+$(foreach N, 4 5 6 7 8 9 10 11 12, $(eval $(call DEF_FFT_FIXED32,$(N))))
+
+fate-fft-fixed32-test: $(FATE_FFT_FIXED32)
+$(FATE_FFT_FIXED32): libavcodec/fft-fixed32-test$(EXESUF)
+$(FATE_FFT_FIXED32): CMD = run libavcodec/fft-fixed32-test $(CPUFLAGS:%=-c%) $(ARGS)
+$(FATE_FFT_FIXED32): REF = /dev/null
+
+FATE-$(call ALLYES, AVCODEC FFT) += $(FATE_FFT) $(FATE_FFT_FIXED) $(FATE_FFT_FIXED32)
+fate-fft: $(FATE_FFT) $(FATE_FFT_FIXED) $(FATE_FFT_FIXED32)
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