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-rw-r--r--libavutil/mips/Makefile1
-rw-r--r--libavutil/mips/float_dsp_mips.c383
-rw-r--r--libavutil/mips/intreadwrite.h8
-rw-r--r--libavutil/mips/libm_mips.h73
4 files changed, 461 insertions, 4 deletions
diff --git a/libavutil/mips/Makefile b/libavutil/mips/Makefile
new file mode 100644
index 0000000000..dbfa5aa341
--- /dev/null
+++ b/libavutil/mips/Makefile
@@ -0,0 +1 @@
+OBJS += mips/float_dsp_mips.o
diff --git a/libavutil/mips/float_dsp_mips.c b/libavutil/mips/float_dsp_mips.c
new file mode 100644
index 0000000000..06d52dc258
--- /dev/null
+++ b/libavutil/mips/float_dsp_mips.c
@@ -0,0 +1,383 @@
+/*
+ * 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: Branimir Vasic (bvasic@mips.com)
+ * 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
+ */
+
+/**
+ * @file
+ * Reference: libavutil/float_dsp.c
+ */
+
+#include "config.h"
+#include "libavutil/float_dsp.h"
+
+#if HAVE_INLINE_ASM && HAVE_MIPSFPU
+static void vector_fmul_mips(float *dst, const float *src0, const float *src1,
+ int len)
+{
+ int i;
+
+ if (len & 3) {
+ for (i = 0; i < len; i++)
+ dst[i] = src0[i] * src1[i];
+ } else {
+ float *d = (float *)dst;
+ float *d_end = d + len;
+ float *s0 = (float *)src0;
+ float *s1 = (float *)src1;
+
+ float src0_0, src0_1, src0_2, src0_3;
+ float src1_0, src1_1, src1_2, src1_3;
+
+ __asm__ volatile (
+ "1: \n\t"
+ "lwc1 %[src0_0], 0(%[s0]) \n\t"
+ "lwc1 %[src1_0], 0(%[s1]) \n\t"
+ "lwc1 %[src0_1], 4(%[s0]) \n\t"
+ "lwc1 %[src1_1], 4(%[s1]) \n\t"
+ "lwc1 %[src0_2], 8(%[s0]) \n\t"
+ "lwc1 %[src1_2], 8(%[s1]) \n\t"
+ "lwc1 %[src0_3], 12(%[s0]) \n\t"
+ "lwc1 %[src1_3], 12(%[s1]) \n\t"
+ "mul.s %[src0_0], %[src0_0], %[src1_0] \n\t"
+ "mul.s %[src0_1], %[src0_1], %[src1_1] \n\t"
+ "mul.s %[src0_2], %[src0_2], %[src1_2] \n\t"
+ "mul.s %[src0_3], %[src0_3], %[src1_3] \n\t"
+ "swc1 %[src0_0], 0(%[d]) \n\t"
+ "swc1 %[src0_1], 4(%[d]) \n\t"
+ "swc1 %[src0_2], 8(%[d]) \n\t"
+ "swc1 %[src0_3], 12(%[d]) \n\t"
+ "addiu %[s0], %[s0], 16 \n\t"
+ "addiu %[s1], %[s1], 16 \n\t"
+ "addiu %[d], %[d], 16 \n\t"
+ "bne %[d], %[d_end], 1b \n\t"
+
+ : [src0_0]"=&f"(src0_0), [src0_1]"=&f"(src0_1),
+ [src0_2]"=&f"(src0_2), [src0_3]"=&f"(src0_3),
+ [src1_0]"=&f"(src1_0), [src1_1]"=&f"(src1_1),
+ [src1_2]"=&f"(src1_2), [src1_3]"=&f"(src1_3),
+ [d]"+r"(d), [s0]"+r"(s0), [s1]"+r"(s1)
+ : [d_end]"r"(d_end)
+ : "memory"
+ );
+ }
+}
+
+static void vector_fmul_scalar_mips(float *dst, const float *src, float mul,
+ int len)
+{
+ float temp0, temp1, temp2, temp3;
+ float *local_src = (float*)src;
+ float *end = local_src + len;
+
+ /* loop unrolled 4 times */
+ __asm__ volatile(
+ ".set push \n\t"
+ ".set noreorder \n\t"
+ "1: \n\t"
+ "lwc1 %[temp0], 0(%[src]) \n\t"
+ "lwc1 %[temp1], 4(%[src]) \n\t"
+ "lwc1 %[temp2], 8(%[src]) \n\t"
+ "lwc1 %[temp3], 12(%[src]) \n\t"
+ "addiu %[dst], %[dst], 16 \n\t"
+ "mul.s %[temp0], %[temp0], %[mul] \n\t"
+ "mul.s %[temp1], %[temp1], %[mul] \n\t"
+ "mul.s %[temp2], %[temp2], %[mul] \n\t"
+ "mul.s %[temp3], %[temp3], %[mul] \n\t"
+ "addiu %[src], %[src], 16 \n\t"
+ "swc1 %[temp0], -16(%[dst]) \n\t"
+ "swc1 %[temp1], -12(%[dst]) \n\t"
+ "swc1 %[temp2], -8(%[dst]) \n\t"
+ "bne %[src], %[end], 1b \n\t"
+ " swc1 %[temp3], -4(%[dst]) \n\t"
+ ".set pop \n\t"
+
+ : [temp0]"=&f"(temp0), [temp1]"=&f"(temp1),
+ [temp2]"=&f"(temp2), [temp3]"=&f"(temp3),
+ [dst]"+r"(dst), [src]"+r"(local_src)
+ : [end]"r"(end), [mul]"f"(mul)
+ : "memory"
+ );
+}
+
+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"
+ );
+ }
+}
+
+static void butterflies_float_mips(float *av_restrict v1, float *av_restrict v2,
+ int len)
+{
+ float temp0, temp1, temp2, temp3, temp4;
+ float temp5, temp6, temp7, temp8, temp9;
+ float temp10, temp11, temp12, temp13, temp14, temp15;
+ int pom;
+ pom = (len >> 2)-1;
+
+ /* loop unrolled 4 times */
+ __asm__ volatile (
+ "lwc1 %[temp0], 0(%[v1]) \n\t"
+ "lwc1 %[temp1], 4(%[v1]) \n\t"
+ "lwc1 %[temp2], 8(%[v1]) \n\t"
+ "lwc1 %[temp3], 12(%[v1]) \n\t"
+ "lwc1 %[temp4], 0(%[v2]) \n\t"
+ "lwc1 %[temp5], 4(%[v2]) \n\t"
+ "lwc1 %[temp6], 8(%[v2]) \n\t"
+ "lwc1 %[temp7], 12(%[v2]) \n\t"
+ "beq %[pom], $zero, 2f \n\t"
+ "1: \n\t"
+ "sub.s %[temp8], %[temp0], %[temp4] \n\t"
+ "add.s %[temp9], %[temp0], %[temp4] \n\t"
+ "sub.s %[temp10], %[temp1], %[temp5] \n\t"
+ "add.s %[temp11], %[temp1], %[temp5] \n\t"
+ "sub.s %[temp12], %[temp2], %[temp6] \n\t"
+ "add.s %[temp13], %[temp2], %[temp6] \n\t"
+ "sub.s %[temp14], %[temp3], %[temp7] \n\t"
+ "add.s %[temp15], %[temp3], %[temp7] \n\t"
+ "addiu %[v1], %[v1], 16 \n\t"
+ "addiu %[v2], %[v2], 16 \n\t"
+ "addiu %[pom], %[pom], -1 \n\t"
+ "lwc1 %[temp0], 0(%[v1]) \n\t"
+ "lwc1 %[temp1], 4(%[v1]) \n\t"
+ "lwc1 %[temp2], 8(%[v1]) \n\t"
+ "lwc1 %[temp3], 12(%[v1]) \n\t"
+ "lwc1 %[temp4], 0(%[v2]) \n\t"
+ "lwc1 %[temp5], 4(%[v2]) \n\t"
+ "lwc1 %[temp6], 8(%[v2]) \n\t"
+ "lwc1 %[temp7], 12(%[v2]) \n\t"
+ "swc1 %[temp9], -16(%[v1]) \n\t"
+ "swc1 %[temp8], -16(%[v2]) \n\t"
+ "swc1 %[temp11], -12(%[v1]) \n\t"
+ "swc1 %[temp10], -12(%[v2]) \n\t"
+ "swc1 %[temp13], -8(%[v1]) \n\t"
+ "swc1 %[temp12], -8(%[v2]) \n\t"
+ "swc1 %[temp15], -4(%[v1]) \n\t"
+ "swc1 %[temp14], -4(%[v2]) \n\t"
+ "bgtz %[pom], 1b \n\t"
+ "2: \n\t"
+ "sub.s %[temp8], %[temp0], %[temp4] \n\t"
+ "add.s %[temp9], %[temp0], %[temp4] \n\t"
+ "sub.s %[temp10], %[temp1], %[temp5] \n\t"
+ "add.s %[temp11], %[temp1], %[temp5] \n\t"
+ "sub.s %[temp12], %[temp2], %[temp6] \n\t"
+ "add.s %[temp13], %[temp2], %[temp6] \n\t"
+ "sub.s %[temp14], %[temp3], %[temp7] \n\t"
+ "add.s %[temp15], %[temp3], %[temp7] \n\t"
+ "swc1 %[temp9], 0(%[v1]) \n\t"
+ "swc1 %[temp8], 0(%[v2]) \n\t"
+ "swc1 %[temp11], 4(%[v1]) \n\t"
+ "swc1 %[temp10], 4(%[v2]) \n\t"
+ "swc1 %[temp13], 8(%[v1]) \n\t"
+ "swc1 %[temp12], 8(%[v2]) \n\t"
+ "swc1 %[temp15], 12(%[v1]) \n\t"
+ "swc1 %[temp14], 12(%[v2]) \n\t"
+
+ : [v1]"+r"(v1), [v2]"+r"(v2), [pom]"+r"(pom), [temp0] "=&f" (temp0),
+ [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)
+ :
+ : "memory"
+ );
+}
+
+static void vector_fmul_reverse_mips(float *dst, const float *src0, const float *src1, int len){
+ int i;
+ float temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
+ src1 += len-1;
+
+ for(i=0; i<(len>>2); i++)
+ {
+ /* loop unrolled 4 times */
+ __asm__ volatile(
+ "lwc1 %[temp0], 0(%[src0]) \n\t"
+ "lwc1 %[temp1], 0(%[src1]) \n\t"
+ "lwc1 %[temp2], 4(%[src0]) \n\t"
+ "lwc1 %[temp3], -4(%[src1]) \n\t"
+ "lwc1 %[temp4], 8(%[src0]) \n\t"
+ "lwc1 %[temp5], -8(%[src1]) \n\t"
+ "lwc1 %[temp6], 12(%[src0]) \n\t"
+ "lwc1 %[temp7], -12(%[src1]) \n\t"
+ "mul.s %[temp0], %[temp1], %[temp0] \n\t"
+ "mul.s %[temp2], %[temp3], %[temp2] \n\t"
+ "mul.s %[temp4], %[temp5], %[temp4] \n\t"
+ "mul.s %[temp6], %[temp7], %[temp6] \n\t"
+ "addiu %[src0], %[src0], 16 \n\t"
+ "addiu %[src1], %[src1], -16 \n\t"
+ "addiu %[dst], %[dst], 16 \n\t"
+ "swc1 %[temp0], -16(%[dst]) \n\t"
+ "swc1 %[temp2], -12(%[dst]) \n\t"
+ "swc1 %[temp4], -8(%[dst]) \n\t"
+ "swc1 %[temp6], -4(%[dst]) \n\t"
+
+ : [dst]"+r"(dst), [src0]"+r"(src0), [src1]"+r"(src1),
+ [temp0]"=&f"(temp0), [temp1]"=&f"(temp1),[temp2]"=&f"(temp2),
+ [temp3]"=&f"(temp3), [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
+ [temp6]"=&f"(temp6), [temp7]"=&f"(temp7)
+ :
+ : "memory"
+ );
+ }
+}
+#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
+
+void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp) {
+#if HAVE_INLINE_ASM && HAVE_MIPSFPU
+ fdsp->vector_fmul = vector_fmul_mips;
+ fdsp->vector_fmul_scalar = vector_fmul_scalar_mips;
+ fdsp->vector_fmul_window = vector_fmul_window_mips;
+ fdsp->butterflies_float = butterflies_float_mips;
+ fdsp->vector_fmul_reverse = vector_fmul_reverse_mips;
+#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
+}
diff --git a/libavutil/mips/intreadwrite.h b/libavutil/mips/intreadwrite.h
index 4dabbe6819..9ba0491372 100644
--- a/libavutil/mips/intreadwrite.h
+++ b/libavutil/mips/intreadwrite.h
@@ -1,20 +1,20 @@
/*
* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
diff --git a/libavutil/mips/libm_mips.h b/libavutil/mips/libm_mips.h
new file mode 100644
index 0000000000..8853bbc751
--- /dev/null
+++ b/libavutil/mips/libm_mips.h
@@ -0,0 +1,73 @@
+/*
+ * 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: Nedeljko Babic (nbabic@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
+ * MIPS optimization for some libm functions
+ */
+
+#ifndef AVUTIL_LIBM_MIPS_H
+#define AVUTIL_LIBM_MIPS_H
+
+static av_always_inline av_const long int lrintf_mips(float x)
+{
+ register int ret_int;
+
+ __asm__ volatile (
+ "cvt.w.s %[x], %[x] \n\t"
+ "mfc1 %[ret_int], %[x] \n\t"
+
+ :[x]"+f"(x), [ret_int]"=r"(ret_int)
+ );
+ return ret_int;
+}
+
+#undef lrintf
+#define lrintf(x) lrintf_mips(x)
+
+#define HAVE_LRINTF 1
+#endif /* AVUTIL_LIBM_MIPS_H */