@@ -59,6 +59,7 @@ Files that have MIPS copyright notice in them:

       dsputil_mips.c

       fft_mips.c

       fft_table.h

+      fft_init_table.c

       fmtconvert_mips.c

       mpegaudiodsp_mips_fixed.c

       mpegaudiodsp_mips_float.c

@@ -3173,6 +3173,7 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)

     if (HAVE_MMI)        ff_dsputil_init_mmi   (c, avctx);

     if (ARCH_SH4)        ff_dsputil_init_sh4   (c, avctx);

     if (ARCH_BFIN)       ff_dsputil_init_bfin  (c, avctx);

+    if (HAVE_MIPSFPU)    ff_dsputil_init_mips  (c, avctx);

     for (i = 0; i < 4; i++) {

         for (j = 0; j < 16; j++) {

@@ -622,6 +622,7 @@ void ff_dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);

 void ff_dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);

 void ff_dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);

 void ff_dsputil_init_vis(DSPContext* c, AVCodecContext *avctx);

+void ff_dsputil_init_mips(DSPContext* c, AVCodecContext *avctx);

 void ff_dsputil_init_dwt(DSPContext *c);

 void ff_mlp_init(DSPContext* c, AVCodecContext *avctx);

@@ -162,6 +162,7 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)

     if (HAVE_ALTIVEC) ff_fft_init_altivec(s);

     if (HAVE_MMX)     ff_fft_init_mmx(s);

     if (CONFIG_MDCT)  s->mdct_calcw = s->mdct_calc;

+    if (HAVE_MIPSFPU) ff_fft_init_mips(s);

 #else

     if (CONFIG_MDCT)  s->mdct_calcw = ff_mdct_calcw_c;

     if (ARCH_ARM)     ff_fft_fixed_init_arm(s);

@@ -137,6 +137,7 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse);

 void ff_fft_init_altivec(FFTContext *s);

 void ff_fft_init_mmx(FFTContext *s);

 void ff_fft_init_arm(FFTContext *s);

+void ff_fft_init_mips(FFTContext *s);

 #else

 void ff_fft_fixed_init_arm(FFTContext *s);

 #endif

@@ -86,6 +86,7 @@ av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx)

     if (ARCH_ARM) ff_fmt_convert_init_arm(c, avctx);

     if (HAVE_ALTIVEC) ff_fmt_convert_init_altivec(c, avctx);

     if (HAVE_MMX) ff_fmt_convert_init_x86(c, avctx);

+    if (HAVE_MIPSFPU) ff_fmt_convert_init_mips(c);

 }

 /* ffdshow custom code */

@@ -92,6 +92,7 @@ av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx);

 void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx);

 void ff_fmt_convert_init_altivec(FmtConvertContext *c, AVCodecContext *avctx);

 void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx);

+void ff_fmt_convert_init_mips(FmtConvertContext *c);

 /* ffdshow custom code */

 void float_interleave(float *dst, const float **src, long len, int channels);

@@ -13,3 +13,7 @@ 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-$(HAVE_INLINE_ASM)           += mips/fmtconvert_mips.o

+MIPSFPU-OBJS-$(HAVE_INLINE_ASM)           += mips/dsputil_mips.o

new file mode 100644

@@ -0,0 +1,164 @@

+/*

+ * 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 is

+ *    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.

+ *

+ * Author:  Zoran Lukic (zoranl@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

+ */

+#include "config.h"

+#include "libavcodec/dsputil.h"

+

+static void vector_fmul_window_mips(float *dst, const float *src0,

+        const float *src1, const float *win, int len)

+{

+    int i, j;

+    /*

+     * variables used in inline assembler

+     */

+    float * dst_i, * dst_j, * dst_i2, * dst_j2;

+    float temp, temp1, temp2, temp3, temp4, temp5, temp6, temp7;

+

+    dst  += len;

+    win  += len;

+    src0 += len;

+

+    for (i = -len, j = len - 1; i < 0; i += 8, j -= 8) {

+

+        dst_i = dst + i;

+        dst_j = dst + j;

+

+        dst_i2 = dst + i + 4;

+        dst_j2 = dst + j - 4;

+

+        __asm__ volatile (

+            "mul.s   %[temp],   %[s1],       %[wi]            \n\t"

+            "mul.s   %[temp1],  %[s1],       %[wj]            \n\t"

+            "mul.s   %[temp2],  %[s11],      %[wi1]           \n\t"

+            "mul.s   %[temp3],  %[s11],      %[wj1]           \n\t"

+

+            "msub.s  %[temp],   %[temp],     %[s0],  %[wj]    \n\t"

+            "madd.s  %[temp1],  %[temp1],    %[s0],  %[wi]    \n\t"

+            "msub.s  %[temp2],  %[temp2],    %[s01], %[wj1]   \n\t"

+            "madd.s  %[temp3],  %[temp3],    %[s01], %[wi1]   \n\t"

+

+            "swc1    %[temp],   0(%[dst_i])                   \n\t" /* dst[i] = s0*wj - s1*wi; */

+            "swc1    %[temp1],  0(%[dst_j])                   \n\t" /* dst[j] = s0*wi + s1*wj; */

+            "swc1    %[temp2],  4(%[dst_i])                   \n\t" /* dst[i+1] = s01*wj1 - s11*wi1; */

+            "swc1    %[temp3], -4(%[dst_j])                   \n\t" /* dst[j-1] = s01*wi1 + s11*wj1; */

+

+            "mul.s   %[temp4],  %[s12],      %[wi2]           \n\t"

+            "mul.s   %[temp5],  %[s12],      %[wj2]           \n\t"

+            "mul.s   %[temp6],  %[s13],      %[wi3]           \n\t"

+            "mul.s   %[temp7],  %[s13],      %[wj3]           \n\t"

+

+            "msub.s  %[temp4],  %[temp4],    %[s02], %[wj2]   \n\t"

+            "madd.s  %[temp5],  %[temp5],    %[s02], %[wi2]   \n\t"

+            "msub.s  %[temp6],  %[temp6],    %[s03], %[wj3]   \n\t"

+            "madd.s  %[temp7],  %[temp7],    %[s03], %[wi3]   \n\t"

+

+            "swc1    %[temp4],  8(%[dst_i])                   \n\t" /* dst[i+2] = s02*wj2 - s12*wi2; */

+            "swc1    %[temp5], -8(%[dst_j])                   \n\t" /* dst[j-2] = s02*wi2 + s12*wj2; */

+            "swc1    %[temp6],  12(%[dst_i])                  \n\t" /* dst[i+2] = s03*wj3 - s13*wi3; */

+            "swc1    %[temp7], -12(%[dst_j])                  \n\t" /* dst[j-3] = s03*wi3 + s13*wj3; */

+            : [temp]"=&f"(temp),  [temp1]"=&f"(temp1), [temp2]"=&f"(temp2),

+              [temp3]"=&f"(temp3), [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),

+              [temp6]"=&f"(temp6), [temp7]"=&f"(temp7)

+            : [dst_j]"r"(dst_j),     [dst_i]"r" (dst_i),

+              [s0] "f"(src0[i]),     [wj] "f"(win[j]),     [s1] "f"(src1[j]),

+              [wi] "f"(win[i]),      [s01]"f"(src0[i + 1]),[wj1]"f"(win[j - 1]),

+              [s11]"f"(src1[j - 1]), [wi1]"f"(win[i + 1]), [s02]"f"(src0[i + 2]),

+              [wj2]"f"(win[j - 2]),  [s12]"f"(src1[j - 2]),[wi2]"f"(win[i + 2]),

+              [s03]"f"(src0[i + 3]), [wj3]"f"(win[j - 3]), [s13]"f"(src1[j - 3]),

+              [wi3]"f"(win[i + 3])

+            : "memory"

+        );

+

+        __asm__ volatile (

+            "mul.s  %[temp],   %[s1],       %[wi]            \n\t"

+            "mul.s  %[temp1],  %[s1],       %[wj]            \n\t"

+            "mul.s  %[temp2],  %[s11],      %[wi1]           \n\t"

+            "mul.s  %[temp3],  %[s11],      %[wj1]           \n\t"

+

+            "msub.s %[temp],   %[temp],     %[s0],  %[wj]    \n\t"

+            "madd.s %[temp1],  %[temp1],    %[s0],  %[wi]    \n\t"

+            "msub.s %[temp2],  %[temp2],    %[s01], %[wj1]   \n\t"

+            "madd.s %[temp3],  %[temp3],    %[s01], %[wi1]   \n\t"

+

+            "swc1   %[temp],   0(%[dst_i2])                  \n\t" /* dst[i] = s0*wj - s1*wi; */

+            "swc1   %[temp1],  0(%[dst_j2])                  \n\t" /* dst[j] = s0*wi + s1*wj; */

+            "swc1   %[temp2],  4(%[dst_i2])                  \n\t" /* dst[i+1] = s01*wj1 - s11*wi1; */

+            "swc1   %[temp3], -4(%[dst_j2])                  \n\t" /* dst[j-1] = s01*wi1 + s11*wj1; */

+

+            "mul.s  %[temp4],  %[s12],      %[wi2]           \n\t"

+            "mul.s  %[temp5],  %[s12],      %[wj2]           \n\t"

+            "mul.s  %[temp6],  %[s13],      %[wi3]           \n\t"

+            "mul.s  %[temp7],  %[s13],      %[wj3]           \n\t"

+

+            "msub.s %[temp4],  %[temp4],    %[s02], %[wj2]   \n\t"

+            "madd.s %[temp5],  %[temp5],    %[s02], %[wi2]   \n\t"

+            "msub.s %[temp6],  %[temp6],    %[s03], %[wj3]   \n\t"

+            "madd.s %[temp7],  %[temp7],    %[s03], %[wi3]   \n\t"

+

+            "swc1   %[temp4],  8(%[dst_i2])                  \n\t" /* dst[i+2] = s02*wj2 - s12*wi2; */

+            "swc1   %[temp5], -8(%[dst_j2])                  \n\t" /* dst[j-2] = s02*wi2 + s12*wj2; */

+            "swc1   %[temp6],  12(%[dst_i2])                 \n\t" /* dst[i+2] = s03*wj3 - s13*wi3; */

+            "swc1   %[temp7], -12(%[dst_j2])                 \n\t" /* dst[j-3] = s03*wi3 + s13*wj3; */

+            : [temp]"=&f"(temp),

+              [temp1]"=&f"(temp1), [temp2]"=&f"(temp2), [temp3]"=&f"(temp3),

+              [temp4]"=&f"(temp4), [temp5]"=&f"(temp5), [temp6]"=&f"(temp6),

+              [temp7]  "=&f" (temp7)

+            : [dst_j2]"r"(dst_j2),   [dst_i2]"r"(dst_i2),

+              [s0] "f"(src0[i + 4]), [wj] "f"(win[j - 4]), [s1] "f"(src1[j - 4]),

+              [wi] "f"(win[i + 4]),  [s01]"f"(src0[i + 5]),[wj1]"f"(win[j - 5]),

+              [s11]"f"(src1[j - 5]), [wi1]"f"(win[i + 5]), [s02]"f"(src0[i + 6]),

+              [wj2]"f"(win[j - 6]),  [s12]"f"(src1[j - 6]),[wi2]"f"(win[i + 6]),

+              [s03]"f"(src0[i + 7]), [wj3]"f"(win[j - 7]), [s13]"f"(src1[j - 7]),

+              [wi3]"f"(win[i + 7])

+            : "memory"

+        );

+    }

+}

+

+av_cold void ff_dsputil_init_mips( DSPContext* c, AVCodecContext *avctx )

+{

+    c->vector_fmul_window = vector_fmul_window_mips;

+}

new file mode 100644

@@ -0,0 +1,67 @@

+/*

+ * 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.

+ *

+ * Author:  Stanislav Ocovaj (socovaj@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 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);

+    }

+}

new file mode 100644

@@ -0,0 +1,530 @@

+/*

+ * 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.

+ *

+ * Author:  Stanislav Ocovaj (socovaj@mips.com)

+ * Author:  Zoran Lukic (zoranl@mips.com)

+ *

+ * Optimized MDCT/IMDCT and FFT transforms

+ *

+ * 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

+ */

+#include "config.h"

+#include "libavcodec/fft.h"

+#include "fft_table.h"

+

+/**

+ * FFT transform

+ */

+

+#if HAVE_INLINE_ASM

+static void ff_fft_calc_mips(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;

+    float w_re, w_im;

+    float *w_re_ptr, *w_im_ptr;

+    const int fft_size = (1 << s->nbits);

+    int s_n = s->nbits;

+    int tem1, tem2;

+    float pom,  pom1,  pom2,  pom3;

+    float temp, temp1, temp3, temp4;

+    FFTComplex * tmpz_n2, * tmpz_n34, * tmpz_n4;

+    FFTComplex * tmpz_n2_i, * tmpz_n34_i, * tmpz_n4_i, * tmpz_i;

+

+    /**

+    *num_transforms = (0x2aab >> (16 - s->nbits)) | 1;

+    */

+    __asm__ volatile (

+        "li   %[tem1], 16                                      \n\t"

+        "sub  %[s_n],  %[tem1], %[s_n]                         \n\t"

+        "li   %[tem2], 10923                                   \n\t"

+        "srav %[tem2], %[tem2], %[s_n]                         \n\t"

+        "ori  %[num_t],%[tem2], 1                              \n\t"

+        : [num_t]"=r"(num_transforms), [s_n]"+r"(s_n),

+          [tem1]"=&r"(tem1), [tem2]"=&r"(tem2)

+    );

+

+

+    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;

+

+        __asm__ volatile (

+            "lwc1  %[tmp1], 32(%[tmpz])                     \n\t"

+            "lwc1  %[pom],  40(%[tmpz])                     \n\t"

+            "lwc1  %[tmp3], 48(%[tmpz])                     \n\t"

+            "lwc1  %[pom1], 56(%[tmpz])                     \n\t"

+            "lwc1  %[tmp2], 36(%[tmpz])                     \n\t"

+            "lwc1  %[pom2], 44(%[tmpz])                     \n\t"

+            "lwc1  %[pom3], 60(%[tmpz])                     \n\t"

+            "lwc1  %[tmp4], 52(%[tmpz])                     \n\t"

+            "add.s %[tmp1], %[tmp1],    %[pom]              \n\t"  // tmp1 = tmpz[4].re + tmpz[5].re;

+            "add.s %[tmp3], %[tmp3],    %[pom1]             \n\t"  // tmp3 = tmpz[6].re + tmpz[7].re;

+            "add.s %[tmp2], %[tmp2],    %[pom2]             \n\t"  // tmp2 = tmpz[4].im + tmpz[5].im;

+            "lwc1  %[pom],  40(%[tmpz])                     \n\t"

+            "add.s %[tmp4], %[tmp4],    %[pom3]             \n\t"  // tmp4 = tmpz[6].im + tmpz[7].im;

+            "add.s %[tmp5], %[tmp1],    %[tmp3]             \n\t"  // tmp5 = tmp1 + tmp3;

+            "sub.s %[tmp7], %[tmp1],    %[tmp3]             \n\t"  // tmp7 = tmp1 - tmp3;

+            "lwc1  %[tmp1], 32(%[tmpz])                     \n\t"

+            "lwc1  %[pom1], 44(%[tmpz])                     \n\t"

+            "add.s %[tmp6], %[tmp2],    %[tmp4]             \n\t"  // tmp6 = tmp2 + tmp4;

+            "sub.s %[tmp8], %[tmp2],    %[tmp4]             \n\t"  // tmp8 = tmp2 - tmp4;

+            "lwc1  %[tmp2], 36(%[tmpz])                     \n\t"

+            "lwc1  %[pom2], 56(%[tmpz])                     \n\t"

+            "lwc1  %[pom3], 60(%[tmpz])                     \n\t"

+            "lwc1  %[tmp3], 48(%[tmpz])                     \n\t"

+            "lwc1  %[tmp4], 52(%[tmpz])                     \n\t"

+            "sub.s %[tmp1], %[tmp1],    %[pom]              \n\t"  // tmp1 = tmpz[4].re - tmpz[5].re;

+            "lwc1  %[pom],  0(%[tmpz])                      \n\t"

+            "sub.s %[tmp2], %[tmp2],    %[pom1]             \n\t"  // tmp2 = tmpz[4].im - tmpz[5].im;

+            "sub.s %[tmp3], %[tmp3],    %[pom2]             \n\t"  // tmp3 = tmpz[6].re - tmpz[7].re;

+            "lwc1  %[pom2], 4(%[tmpz])                      \n\t"

+            "sub.s %[pom1], %[pom],     %[tmp5]             \n\t"

+            "sub.s %[tmp4], %[tmp4],    %[pom3]             \n\t"  // tmp4 = tmpz[6].im - tmpz[7].im;

+            "add.s %[pom3], %[pom],     %[tmp5]             \n\t"

+            "sub.s %[pom],  %[pom2],    %[tmp6]             \n\t"

+            "add.s %[pom2], %[pom2],    %[tmp6]             \n\t"

+            "swc1  %[pom1], 32(%[tmpz])                     \n\t"  // tmpz[4].re = tmpz[0].re - tmp5;

+            "swc1  %[pom3], 0(%[tmpz])                      \n\t"  // tmpz[0].re = tmpz[0].re + tmp5;

+            "swc1  %[pom],  36(%[tmpz])                     \n\t"  // tmpz[4].im = tmpz[0].im - tmp6;

+            "swc1  %[pom2], 4(%[tmpz])                      \n\t"  // tmpz[0].im = tmpz[0].im + tmp6;

+            "lwc1  %[pom1], 16(%[tmpz])                     \n\t"

+            "lwc1  %[pom3], 20(%[tmpz])                     \n\t"

+            "li.s  %[pom],  0.7071067812                    \n\t"  // float pom = 0.7071067812f;

+            "add.s %[temp1],%[tmp1],    %[tmp2]             \n\t"

+            "sub.s %[temp], %[pom1],    %[tmp8]             \n\t"

+            "add.s %[pom2], %[pom3],    %[tmp7]             \n\t"

+            "sub.s %[temp3],%[tmp3],    %[tmp4]             \n\t"

+            "sub.s %[temp4],%[tmp2],    %[tmp1]             \n\t"

+            "swc1  %[temp], 48(%[tmpz])                     \n\t"  // tmpz[6].re = tmpz[2].re - tmp8;

+            "swc1  %[pom2], 52(%[tmpz])                     \n\t"  // tmpz[6].im = tmpz[2].im + tmp7;

+            "add.s %[pom1], %[pom1],    %[tmp8]             \n\t"

+            "sub.s %[pom3], %[pom3],    %[tmp7]             \n\t"

+            "add.s %[tmp3], %[tmp3],    %[tmp4]             \n\t"

+            "mul.s %[tmp5], %[pom],     %[temp1]            \n\t"  // tmp5 = pom * (tmp1 + tmp2);

+            "mul.s %[tmp7], %[pom],     %[temp3]            \n\t"  // tmp7 = pom * (tmp3 - tmp4);

+            "mul.s %[tmp6], %[pom],     %[temp4]            \n\t"  // tmp6 = pom * (tmp2 - tmp1);

+            "mul.s %[tmp8], %[pom],     %[tmp3]             \n\t"  // tmp8 = pom * (tmp3 + tmp4);

+            "swc1  %[pom1], 16(%[tmpz])                     \n\t"  // tmpz[2].re = tmpz[2].re + tmp8;

+            "swc1  %[pom3], 20(%[tmpz])                     \n\t"  // tmpz[2].im = tmpz[2].im - tmp7;

+            "add.s %[tmp1], %[tmp5],    %[tmp7]             \n\t"  // tmp1 = tmp5 + tmp7;

+            "sub.s %[tmp3], %[tmp5],    %[tmp7]             \n\t"  // tmp3 = tmp5 - tmp7;

+            "add.s %[tmp2], %[tmp6],    %[tmp8]             \n\t"  // tmp2 = tmp6 + tmp8;

+            "sub.s %[tmp4], %[tmp6],    %[tmp8]             \n\t"  // tmp4 = tmp6 - tmp8;

+            "lwc1  %[temp], 8(%[tmpz])                      \n\t"

+            "lwc1  %[temp1],12(%[tmpz])                     \n\t"

+            "lwc1  %[pom],  24(%[tmpz])                     \n\t"

+            "lwc1  %[pom2], 28(%[tmpz])                     \n\t"

+            "sub.s %[temp4],%[temp],    %[tmp1]             \n\t"

+            "sub.s %[temp3],%[temp1],   %[tmp2]             \n\t"

+            "add.s %[temp], %[temp],    %[tmp1]             \n\t"

+            "add.s %[temp1],%[temp1],   %[tmp2]             \n\t"

+            "sub.s %[pom1], %[pom],     %[tmp4]             \n\t"

+            "add.s %[pom3], %[pom2],    %[tmp3]             \n\t"

+            "add.s %[pom],  %[pom],     %[tmp4]             \n\t"

+            "sub.s %[pom2], %[pom2],    %[tmp3]             \n\t"

+            "swc1  %[temp4],40(%[tmpz])                     \n\t"  // tmpz[5].re = tmpz[1].re - tmp1;

+            "swc1  %[temp3],44(%[tmpz])                     \n\t"  // tmpz[5].im = tmpz[1].im - tmp2;

+            "swc1  %[temp], 8(%[tmpz])                      \n\t"  // tmpz[1].re = tmpz[1].re + tmp1;

+            "swc1  %[temp1],12(%[tmpz])                     \n\t"  // tmpz[1].im = tmpz[1].im + tmp2;

+            "swc1  %[pom1], 56(%[tmpz])                     \n\t"  // tmpz[7].re = tmpz[3].re - tmp4;

+            "swc1  %[pom3], 60(%[tmpz])                     \n\t"  // tmpz[7].im = tmpz[3].im + tmp3;

+            "swc1  %[pom],  24(%[tmpz])                     \n\t"  // tmpz[3].re = tmpz[3].re + tmp4;

+            "swc1  %[pom2], 28(%[tmpz])                     \n\t"  // tmpz[3].im = tmpz[3].im - tmp3;

+            : [tmp1]"=&f"(tmp1), [pom]"=&f"(pom),   [pom1]"=&f"(pom1), [pom2]"=&f"(pom2),

+              [tmp3]"=&f"(tmp3), [tmp2]"=&f"(tmp2), [tmp4]"=&f"(tmp4), [tmp5]"=&f"(tmp5),  [tmp7]"=&f"(tmp7),

+              [tmp6]"=&f"(tmp6), [tmp8]"=&f"(tmp8), [pom3]"=&f"(pom3),[temp]"=&f"(temp), [temp1]"=&f"(temp1),

+              [temp3]"=&f"(temp3), [temp4]"=&f"(temp4)

+            : [tmpz]"r"(tmpz)

+            : "memory"

+        );

+    }

+

+    step = 1 << (MAX_LOG2_NFFT - 4);

+    n4 = 4;

+

+    for (nbits=4; nbits<=s->nbits; nbits++) {

+        /*

+        * num_transforms = (num_transforms >> 1) | 1;

+        */

+        __asm__ volatile (

+            "sra %[num_t], %[num_t], 1               \n\t"

+            "ori %[num_t], %[num_t], 1               \n\t"

+

+            : [num_t] "+r" (num_transforms)

+        );

+        n2  = 2 * n4;

+        n34 = 3 * n4;

+

+        for (n=0; n<num_transforms; n++) {

+            offset = fft_offsets_lut[n] << nbits;

+            tmpz = z + offset;

+

+            tmpz_n2  = tmpz +  n2;

+            tmpz_n4  = tmpz +  n4;

+            tmpz_n34 = tmpz +  n34;

+

+            __asm__ volatile (

+                "lwc1  %[pom1], 0(%[tmpz_n2])            \n\t"

+                "lwc1  %[pom],  0(%[tmpz_n34])           \n\t"

+                "lwc1  %[pom2], 4(%[tmpz_n2])            \n\t"

+                "lwc1  %[pom3], 4(%[tmpz_n34])           \n\t"

+                "lwc1  %[temp1],0(%[tmpz])               \n\t"

+                "lwc1  %[temp3],4(%[tmpz])               \n\t"

+                "add.s %[tmp5], %[pom1],      %[pom]     \n\t"   //  tmp5 = tmpz[ n2].re + tmpz[n34].re;

+                "sub.s %[tmp1], %[pom1],      %[pom]     \n\t"   //  tmp1 = tmpz[ n2].re - tmpz[n34].re;

+                "add.s %[tmp6], %[pom2],      %[pom3]    \n\t"   //  tmp6 = tmpz[ n2].im + tmpz[n34].im;

+                "sub.s %[tmp2], %[pom2],      %[pom3]    \n\t"   //  tmp2 = tmpz[ n2].im - tmpz[n34].im;

+                "sub.s %[temp], %[temp1],     %[tmp5]    \n\t"

+                "add.s %[temp1],%[temp1],     %[tmp5]    \n\t"

+                "sub.s %[temp4],%[temp3],     %[tmp6]    \n\t"

+                "add.s %[temp3],%[temp3],     %[tmp6]    \n\t"

+                "swc1  %[temp], 0(%[tmpz_n2])            \n\t"   //  tmpz[ n2].re = tmpz[ 0].re - tmp5;

+                "swc1  %[temp1],0(%[tmpz])               \n\t"   //  tmpz[  0].re = tmpz[ 0].re + tmp5;

+                "lwc1  %[pom1], 0(%[tmpz_n4])            \n\t"

+                "swc1  %[temp4],4(%[tmpz_n2])            \n\t"   //  tmpz[ n2].im = tmpz[ 0].im - tmp6;

+                "lwc1  %[temp], 4(%[tmpz_n4])            \n\t"

+                "swc1  %[temp3],4(%[tmpz])               \n\t"   //  tmpz[  0].im = tmpz[ 0].im + tmp6;

+                "sub.s %[pom],  %[pom1],      %[tmp2]    \n\t"

+                "add.s %[pom1], %[pom1],      %[tmp2]    \n\t"

+                "add.s %[temp1],%[temp],      %[tmp1]    \n\t"

+                "sub.s %[temp], %[temp],      %[tmp1]    \n\t"

+                "swc1  %[pom],  0(%[tmpz_n34])           \n\t"   //  tmpz[n34].re = tmpz[n4].re - tmp2;

+                "swc1  %[pom1], 0(%[tmpz_n4])            \n\t"   //  tmpz[ n4].re = tmpz[n4].re + tmp2;

+                "swc1  %[temp1],4(%[tmpz_n34])           \n\t"   //  tmpz[n34].im = tmpz[n4].im + tmp1;

+                "swc1  %[temp], 4(%[tmpz_n4])            \n\t"   //  tmpz[ n4].im = tmpz[n4].im - tmp1;

+                : [tmp5]"=&f"(tmp5),

+                  [tmp1]"=&f"(tmp1), [pom]"=&f"(pom),        [pom1]"=&f"(pom1),        [pom2]"=&f"(pom2),

+                  [tmp2]"=&f"(tmp2), [tmp6]"=&f"(tmp6),          [pom3]"=&f"(pom3),

+                  [temp]"=&f"(temp), [temp1]"=&f"(temp1),     [temp3]"=&f"(temp3),       [temp4]"=&f"(temp4)

+                : [tmpz]"r"(tmpz), [tmpz_n2]"r"(tmpz_n2), [tmpz_n34]"r"(tmpz_n34), [tmpz_n4]"r"(tmpz_n4)

+                : "memory"

+            );

+

+            w_re_ptr = (float*)(ff_cos_65536 + step);

+            w_im_ptr = (float*)(ff_cos_65536 + MAX_FFT_SIZE/4 - step);

+

+            for (i=1; i<n4; i++) {

+                w_re = w_re_ptr[0];

+                w_im = w_im_ptr[0];

+                tmpz_n2_i = tmpz_n2  + i;

+                tmpz_n4_i = tmpz_n4  + i;

+                tmpz_n34_i= tmpz_n34 + i;

+                tmpz_i    = tmpz     + i;

+

+                __asm__ volatile (

+                    "lwc1     %[temp],  0(%[tmpz_n2_i])               \n\t"

+                    "lwc1     %[temp1], 4(%[tmpz_n2_i])               \n\t"

+                    "lwc1     %[pom],   0(%[tmpz_n34_i])              \n\t"

+                    "lwc1     %[pom1],  4(%[tmpz_n34_i])              \n\t"

+                    "mul.s    %[temp3], %[w_im],    %[temp]           \n\t"

+                    "mul.s    %[temp4], %[w_im],    %[temp1]          \n\t"

+                    "mul.s    %[pom2],  %[w_im],    %[pom1]           \n\t"

+                    "mul.s    %[pom3],  %[w_im],    %[pom]            \n\t"

+                    "msub.s   %[tmp2],  %[temp3],   %[w_re], %[temp1] \n\t"  // tmp2 = w_re * tmpz[ n2+i].im - w_im * tmpz[ n2+i].re;

+                    "madd.s   %[tmp1],  %[temp4],   %[w_re], %[temp]  \n\t"  // tmp1 = w_re * tmpz[ n2+i].re + w_im * tmpz[ n2+i].im;

+                    "msub.s   %[tmp3],  %[pom2],    %[w_re], %[pom]   \n\t"  // tmp3 = w_re * tmpz[n34+i].re - w_im * tmpz[n34+i].im;

+                    "madd.s   %[tmp4],  %[pom3],    %[w_re], %[pom1]  \n\t"  // tmp4 = w_re * tmpz[n34+i].im + w_im * tmpz[n34+i].re;

+                    "lwc1     %[temp],  0(%[tmpz_i])                  \n\t"

+                    "lwc1     %[pom],   4(%[tmpz_i])                  \n\t"

+                    "add.s    %[tmp5],  %[tmp1],    %[tmp3]           \n\t"  // tmp5 = tmp1 + tmp3;

+                    "sub.s    %[tmp1],  %[tmp1],    %[tmp3]           \n\t"  // tmp1 = tmp1 - tmp3;

+                    "add.s    %[tmp6],  %[tmp2],    %[tmp4]           \n\t"  // tmp6 = tmp2 + tmp4;

+                    "sub.s    %[tmp2],  %[tmp2],    %[tmp4]           \n\t"  // tmp2 = tmp2 - tmp4;

+                    "sub.s    %[temp1], %[temp],    %[tmp5]           \n\t"

+                    "add.s    %[temp],  %[temp],    %[tmp5]           \n\t"

+                    "sub.s    %[pom1],  %[pom],     %[tmp6]           \n\t"

+                    "add.s    %[pom],   %[pom],     %[tmp6]           \n\t"

+                    "lwc1     %[temp3], 0(%[tmpz_n4_i])               \n\t"

+                    "lwc1     %[pom2],  4(%[tmpz_n4_i])               \n\t"

+                    "swc1     %[temp1], 0(%[tmpz_n2_i])               \n\t"  // tmpz[ n2+i].re = tmpz[   i].re - tmp5;

+                    "swc1     %[temp],  0(%[tmpz_i])                  \n\t"  // tmpz[    i].re = tmpz[   i].re + tmp5;

+                    "swc1     %[pom1],  4(%[tmpz_n2_i])               \n\t"  // tmpz[ n2+i].im = tmpz[   i].im - tmp6;

+                    "swc1     %[pom] ,  4(%[tmpz_i])                  \n\t"  // tmpz[    i].im = tmpz[   i].im + tmp6;

+                    "sub.s    %[temp4], %[temp3],   %[tmp2]           \n\t"

+                    "add.s    %[pom3],  %[pom2],    %[tmp1]           \n\t"

+                    "add.s    %[temp3], %[temp3],   %[tmp2]           \n\t"

+                    "sub.s    %[pom2],  %[pom2],    %[tmp1]           \n\t"

+                    "swc1     %[temp4], 0(%[tmpz_n34_i])              \n\t"  // tmpz[n34+i].re = tmpz[n4+i].re - tmp2;

+                    "swc1     %[pom3],  4(%[tmpz_n34_i])              \n\t"  // tmpz[n34+i].im = tmpz[n4+i].im + tmp1;

+                    "swc1     %[temp3], 0(%[tmpz_n4_i])               \n\t"  // tmpz[ n4+i].re = tmpz[n4+i].re + tmp2;

+                    "swc1     %[pom2],  4(%[tmpz_n4_i])               \n\t"  // tmpz[ n4+i].im = tmpz[n4+i].im - tmp1;

+                    : [tmp1]"=&f"(tmp1), [tmp2]"=&f" (tmp2), [temp]"=&f"(temp), [tmp3]"=&f"(tmp3),

+                      [tmp4]"=&f"(tmp4), [tmp5]"=&f"(tmp5), [tmp6]"=&f"(tmp6),

+                      [temp1]"=&f"(temp1), [temp3]"=&f"(temp3), [temp4]"=&f"(temp4),

+                      [pom]"=&f"(pom), [pom1]"=&f"(pom1), [pom2]"=&f"(pom2), [pom3]"=&f"(pom3)

+                    : [w_re]"f"(w_re), [w_im]"f"(w_im),

+                      [tmpz_i]"r"(tmpz_i),[tmpz_n2_i]"r"(tmpz_n2_i),

+                      [tmpz_n34_i]"r"(tmpz_n34_i), [tmpz_n4_i]"r"(tmpz_n4_i)

+                    : "memory"

+                );

+                w_re_ptr += step;

+                w_im_ptr -= step;

+            }

+        }

+        step >>= 1;

+        n4   <<= 1;

+    }

+}

+

+/**

+ * MDCT/IMDCT transforms.

+ */

+

+static void ff_imdct_half_mips(FFTContext *s, FFTSample *output, const FFTSample *input)

+{

+    int k, n8, n4, n2, n, j;

+    const uint16_t *revtab = s->revtab;

+    const FFTSample *tcos = s->tcos;

+    const FFTSample *tsin = s->tsin;

+    const FFTSample *in1, *in2, *in3, *in4;

+    FFTComplex *z = (FFTComplex *)output;

+

+    int j1;

+    const float *tcos1, *tsin1, *tcos2, *tsin2;

+    float temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8,

+        temp9, temp10, temp11, temp12, temp13, temp14, temp15, temp16;

+    FFTComplex *z1, *z2;

+

+    n = 1 << s->mdct_bits;

+    n2 = n >> 1;

+    n4 = n >> 2;

+    n8 = n >> 3;

+

+    /* pre rotation */

+    in1 = input;

+    in2 = input + n2 - 1;

+    in3 = input + 2;

+    in4 = input + n2 - 3;

+

+    tcos1 = tcos;

+    tsin1 = tsin;

+

+    /* n4 = 64 or 128 */

+    for(k = 0; k < n4; k += 2) {

+        j  = revtab[k    ];

+        j1 = revtab[k + 1];

+

+        __asm__ volatile (

+            "lwc1           %[temp1],       0(%[in2])                           \t\n"

+            "lwc1           %[temp2],       0(%[tcos1])                         \t\n"

+            "lwc1           %[temp3],       0(%[tsin1])                         \t\n"

+            "lwc1           %[temp4],       0(%[in1])                           \t\n"

+            "lwc1           %[temp5],       0(%[in4])                           \t\n"

+            "mul.s          %[temp9],       %[temp1],   %[temp2]                \t\n"

+            "mul.s          %[temp10],      %[temp1],   %[temp3]                \t\n"

+            "lwc1           %[temp6],       4(%[tcos1])                         \t\n"

+            "lwc1           %[temp7],       4(%[tsin1])                         \t\n"

+            "nmsub.s        %[temp9],       %[temp9],   %[temp4],   %[temp3]    \t\n"

+            "madd.s         %[temp10],      %[temp10],  %[temp4],   %[temp2]    \t\n"

+            "mul.s          %[temp11],      %[temp5],   %[temp6]                \t\n"

+            "mul.s          %[temp12],      %[temp5],   %[temp7]                \t\n"

+            "lwc1           %[temp8],       0(%[in3])                           \t\n"

+            "addiu          %[tcos1],       %[tcos1],   8                       \t\n"

+            "addiu          %[tsin1],       %[tsin1],   8                       \t\n"

+            "addiu          %[in1],         %[in1],     16                      \t\n"

+            "nmsub.s        %[temp11],      %[temp11],  %[temp8],   %[temp7]    \t\n"

+            "madd.s         %[temp12],      %[temp12],  %[temp8],   %[temp6]    \t\n"

+            "addiu          %[in2],         %[in2],     -16                     \t\n"

+            "addiu          %[in3],         %[in3],     16                      \t\n"

+            "addiu          %[in4],         %[in4],     -16                     \t\n"

+

+            : [temp1]"=&f"(temp1), [temp2]"=&f"(temp2),

+              [temp3]"=&f"(temp3), [temp4]"=&f"(temp4),

+              [temp5]"=&f"(temp5), [temp6]"=&f"(temp6),

+              [temp7]"=&f"(temp7), [temp8]"=&f"(temp8),

+              [temp9]"=&f"(temp9), [temp10]"=&f"(temp10),

+              [temp11]"=&f"(temp11), [temp12]"=&f"(temp12),

+              [tsin1]"+r"(tsin1), [tcos1]"+r"(tcos1),

+              [in1]"+r"(in1), [in2]"+r"(in2),

+              [in3]"+r"(in3), [in4]"+r"(in4)

+        );

+

+        z[j ].re = temp9;

+        z[j ].im = temp10;

+        z[j1].re = temp11;

+        z[j1].im = temp12;

+    }

+

+    s->fft_calc(s, z);

+

+    /* post rotation + reordering */

+    /* n8 = 32 or 64 */

+    for(k = 0; k < n8; k += 2) {

+        tcos1 = &tcos[n8 - k - 2];

+        tsin1 = &tsin[n8 - k - 2];

+        tcos2 = &tcos[n8 + k];

+        tsin2 = &tsin[n8 + k];

+        z1 = &z[n8 - k - 2];

+        z2 = &z[n8 + k    ];

+

+        __asm__ volatile (

+            "lwc1       %[temp1],   12(%[z1])                           \t\n"

+            "lwc1       %[temp2],   4(%[tsin1])                         \t\n"

+            "lwc1       %[temp3],   4(%[tcos1])                         \t\n"

+            "lwc1       %[temp4],   8(%[z1])                            \t\n"

+            "lwc1       %[temp5],   4(%[z1])                            \t\n"

+            "mul.s      %[temp9],   %[temp1],   %[temp2]                \t\n"

+            "mul.s      %[temp10],  %[temp1],   %[temp3]                \t\n"

+            "lwc1       %[temp6],   0(%[tsin1])                         \t\n"

+            "lwc1       %[temp7],   0(%[tcos1])                         \t\n"

+            "nmsub.s    %[temp9],   %[temp9],   %[temp4],   %[temp3]    \t\n"

+            "madd.s     %[temp10],  %[temp10],  %[temp4],   %[temp2]    \t\n"

+            "mul.s      %[temp11],  %[temp5],   %[temp6]                \t\n"

+            "mul.s      %[temp12],  %[temp5],   %[temp7]                \t\n"

+            "lwc1       %[temp8],   0(%[z1])                            \t\n"

+            "lwc1       %[temp1],   4(%[z2])                            \t\n"

+            "lwc1       %[temp2],   0(%[tsin2])                         \t\n"

+            "lwc1       %[temp3],   0(%[tcos2])                         \t\n"

+            "nmsub.s    %[temp11],  %[temp11],  %[temp8],   %[temp7]    \t\n"

+            "madd.s     %[temp12],  %[temp12],  %[temp8],   %[temp6]    \t\n"

+            "mul.s      %[temp13],  %[temp1],   %[temp2]                \t\n"

+            "mul.s      %[temp14],  %[temp1],   %[temp3]                \t\n"

+            "lwc1       %[temp4],   0(%[z2])                            \t\n"

+            "lwc1       %[temp5],   12(%[z2])                           \t\n"

+            "lwc1       %[temp6],   4(%[tsin2])                         \t\n"

+            "lwc1       %[temp7],   4(%[tcos2])                         \t\n"

+            "nmsub.s    %[temp13],  %[temp13],  %[temp4],   %[temp3]    \t\n"

+            "madd.s     %[temp14],  %[temp14],  %[temp4],   %[temp2]    \t\n"

+            "mul.s      %[temp15],  %[temp5],   %[temp6]                \t\n"

+            "mul.s      %[temp16],  %[temp5],   %[temp7]                \t\n"

+            "lwc1       %[temp8],   8(%[z2])                            \t\n"

+            "nmsub.s    %[temp15],  %[temp15],  %[temp8],   %[temp7]    \t\n"

+            "madd.s     %[temp16],  %[temp16],  %[temp8],   %[temp6]    \t\n"

+            : [temp1]"=&f"(temp1), [temp2]"=&f"(temp2),

+              [temp3]"=&f"(temp3), [temp4]"=&f"(temp4),

+              [temp5]"=&f"(temp5), [temp6]"=&f"(temp6),

+              [temp7]"=&f"(temp7), [temp8]"=&f"(temp8),

+              [temp9]"=&f"(temp9), [temp10]"=&f"(temp10),

+              [temp11]"=&f"(temp11), [temp12]"=&f"(temp12),

+              [temp13]"=&f"(temp13), [temp14]"=&f"(temp14),

+              [temp15]"=&f"(temp15), [temp16]"=&f"(temp16)

+            : [z1]"r"(z1), [z2]"r"(z2),

+              [tsin1]"r"(tsin1), [tcos1]"r"(tcos1),

+              [tsin2]"r"(tsin2), [tcos2]"r"(tcos2)

+        );

+

+        z1[1].re = temp9;

+        z1[1].im = temp14;

+        z2[0].re = temp13;

+        z2[0].im = temp10;

+

+        z1[0].re = temp11;

+        z1[0].im = temp16;

+        z2[1].re = temp15;

+        z2[1].im = temp12;

+    }

+}

+#endif /* HAVE_INLINE_ASM */

+

+/**

+ * Compute inverse MDCT of size N = 2^nbits

+ * @param output N samples

+ * @param input N/2 samples

+ */

+static void ff_imdct_calc_mips(FFTContext *s, FFTSample *output, const FFTSample *input)

+{

+    int k;

+    int n = 1 << s->mdct_bits;

+    int n2 = n >> 1;

+    int n4 = n >> 2;

+

+    ff_imdct_half_mips(s, output+n4, input);

+

+    for(k = 0; k < n4; k+=4) {

+        output[k] = -output[n2-k-1];

+        output[k+1] = -output[n2-k-2];

+        output[k+2] = -output[n2-k-3];

+        output[k+3] = -output[n2-k-4];

+

+        output[n-k-1] = output[n2+k];

+        output[n-k-2] = output[n2+k+1];

+        output[n-k-3] = output[n2+k+2];

+        output[n-k-4] = output[n2+k+3];

+    }

+}

+

+av_cold void ff_fft_init_mips(FFTContext *s)

+{

+    int n=0;

+

+    ff_fft_lut_init(fft_offsets_lut, 0, 1 << 16, &n);

+

+#if HAVE_INLINE_ASM

+    s->fft_calc     = ff_fft_calc_mips;

+#endif

+#if CONFIG_MDCT

+    s->imdct_calc   = ff_imdct_calc_mips;

+    s->imdct_half   = ff_imdct_half_mips;

+#endif

+}

new file mode 100644

@@ -0,0 +1,63 @@

+/*

+ * 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.

+ *

+ * Author:  Stanislav Ocovaj (socovaj@mips.com)

+ *

+ * This file is part of FFmpeg.

+ *