diff options
Diffstat (limited to 'libavutil/mips')
| -rw-r--r-- | libavutil/mips/Makefile | 1 | ||||
| -rw-r--r-- | libavutil/mips/float_dsp_mips.c | 383 | ||||
| -rw-r--r-- | libavutil/mips/intreadwrite.h | 8 | ||||
| -rw-r--r-- | libavutil/mips/libm_mips.h | 73 |
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 */ |