diff options
Diffstat (limited to 'libavcodec/mips/acelp_filters_mips.c')
-rw-r--r-- | libavcodec/mips/acelp_filters_mips.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/libavcodec/mips/acelp_filters_mips.c b/libavcodec/mips/acelp_filters_mips.c new file mode 100644 index 0000000..478db85 --- /dev/null +++ b/libavcodec/mips/acelp_filters_mips.c @@ -0,0 +1,221 @@ + /* + * 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) + * + * various filters for ACELP-based codecs optimized for MIPS + * + * 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: libavcodec/acelp_filters.c + */ +#include "config.h" +#include "libavutil/attributes.h" +#include "libavcodec/acelp_filters.h" +#include "libavutil/mips/asmdefs.h" + +#if HAVE_INLINE_ASM +#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 +static void ff_acelp_interpolatef_mips(float *out, const float *in, + const float *filter_coeffs, int precision, + int frac_pos, int filter_length, int length) +{ + int n, i; + int prec = precision * 4; + int fc_offset = precision - frac_pos; + float in_val_p, in_val_m, fc_val_p, fc_val_m; + + for (n = 0; n < length; n++) { + /** + * four pointers are defined in order to minimize number of + * computations done in inner loop + */ + const float *p_in_p = &in[n]; + const float *p_in_m = &in[n-1]; + const float *p_filter_coeffs_p = &filter_coeffs[frac_pos]; + const float *p_filter_coeffs_m = filter_coeffs + fc_offset; + float v = 0; + + for (i = 0; i < filter_length;i++) { + __asm__ volatile ( + "lwc1 %[in_val_p], 0(%[p_in_p]) \n\t" + "lwc1 %[fc_val_p], 0(%[p_filter_coeffs_p]) \n\t" + "lwc1 %[in_val_m], 0(%[p_in_m]) \n\t" + "lwc1 %[fc_val_m], 0(%[p_filter_coeffs_m]) \n\t" + PTR_ADDIU "%[p_in_p], %[p_in_p], 4 \n\t" + "madd.s %[v],%[v], %[in_val_p],%[fc_val_p] \n\t" + PTR_ADDIU "%[p_in_m], %[p_in_m], -4 \n\t" + PTR_ADDU "%[p_filter_coeffs_p],%[p_filter_coeffs_p], %[prec] \n\t" + PTR_ADDU "%[p_filter_coeffs_m],%[p_filter_coeffs_m], %[prec] \n\t" + "madd.s %[v],%[v],%[in_val_m], %[fc_val_m] \n\t" + + : [v] "+&f" (v),[p_in_p] "+r" (p_in_p), [p_in_m] "+r" (p_in_m), + [p_filter_coeffs_p] "+r" (p_filter_coeffs_p), + [in_val_p] "=&f" (in_val_p), [in_val_m] "=&f" (in_val_m), + [fc_val_p] "=&f" (fc_val_p), [fc_val_m] "=&f" (fc_val_m), + [p_filter_coeffs_m] "+r" (p_filter_coeffs_m) + : [prec] "r" (prec) + : "memory" + ); + } + out[n] = v; + } +} + +static void ff_acelp_apply_order_2_transfer_function_mips(float *out, const float *in, + const float zero_coeffs[2], + const float pole_coeffs[2], + float gain, float mem[2], int n) +{ + /** + * loop is unrolled eight times + */ + + __asm__ volatile ( + "lwc1 $f0, 0(%[mem]) \n\t" + "blez %[n], ff_acelp_apply_order_2_transfer_function_end%= \n\t" + "lwc1 $f1, 4(%[mem]) \n\t" + "lwc1 $f2, 0(%[pole_coeffs]) \n\t" + "lwc1 $f3, 4(%[pole_coeffs]) \n\t" + "lwc1 $f4, 0(%[zero_coeffs]) \n\t" + "lwc1 $f5, 4(%[zero_coeffs]) \n\t" + + "ff_acelp_apply_order_2_transfer_function_madd%=: \n\t" + + "lwc1 $f6, 0(%[in]) \n\t" + "mul.s $f9, $f3, $f1 \n\t" + "mul.s $f7, $f2, $f0 \n\t" + "msub.s $f7, $f7, %[gain], $f6 \n\t" + "sub.s $f7, $f7, $f9 \n\t" + "madd.s $f8, $f7, $f4, $f0 \n\t" + "madd.s $f8, $f8, $f5, $f1 \n\t" + "lwc1 $f11, 4(%[in]) \n\t" + "mul.s $f12, $f3, $f0 \n\t" + "mul.s $f13, $f2, $f7 \n\t" + "msub.s $f13, $f13, %[gain], $f11 \n\t" + "sub.s $f13, $f13, $f12 \n\t" + "madd.s $f14, $f13, $f4, $f7 \n\t" + "madd.s $f14, $f14, $f5, $f0 \n\t" + "swc1 $f8, 0(%[out]) \n\t" + "lwc1 $f6, 8(%[in]) \n\t" + "mul.s $f9, $f3, $f7 \n\t" + "mul.s $f15, $f2, $f13 \n\t" + "msub.s $f15, $f15, %[gain], $f6 \n\t" + "sub.s $f15, $f15, $f9 \n\t" + "madd.s $f8, $f15, $f4, $f13 \n\t" + "madd.s $f8, $f8, $f5, $f7 \n\t" + "swc1 $f14, 4(%[out]) \n\t" + "lwc1 $f11, 12(%[in]) \n\t" + "mul.s $f12, $f3, $f13 \n\t" + "mul.s $f16, $f2, $f15 \n\t" + "msub.s $f16, $f16, %[gain], $f11 \n\t" + "sub.s $f16, $f16, $f12 \n\t" + "madd.s $f14, $f16, $f4, $f15 \n\t" + "madd.s $f14, $f14, $f5, $f13 \n\t" + "swc1 $f8, 8(%[out]) \n\t" + "lwc1 $f6, 16(%[in]) \n\t" + "mul.s $f9, $f3, $f15 \n\t" + "mul.s $f7, $f2, $f16 \n\t" + "msub.s $f7, $f7, %[gain], $f6 \n\t" + "sub.s $f7, $f7, $f9 \n\t" + "madd.s $f8, $f7, $f4, $f16 \n\t" + "madd.s $f8, $f8, $f5, $f15 \n\t" + "swc1 $f14, 12(%[out]) \n\t" + "lwc1 $f11, 20(%[in]) \n\t" + "mul.s $f12, $f3, $f16 \n\t" + "mul.s $f13, $f2, $f7 \n\t" + "msub.s $f13, $f13, %[gain], $f11 \n\t" + "sub.s $f13, $f13, $f12 \n\t" + "madd.s $f14, $f13, $f4, $f7 \n\t" + "madd.s $f14, $f14, $f5, $f16 \n\t" + "swc1 $f8, 16(%[out]) \n\t" + "lwc1 $f6, 24(%[in]) \n\t" + "mul.s $f9, $f3, $f7 \n\t" + "mul.s $f15, $f2, $f13 \n\t" + "msub.s $f15, $f15, %[gain], $f6 \n\t" + "sub.s $f1, $f15, $f9 \n\t" + "madd.s $f8, $f1, $f4, $f13 \n\t" + "madd.s $f8, $f8, $f5, $f7 \n\t" + "swc1 $f14, 20(%[out]) \n\t" + "lwc1 $f11, 28(%[in]) \n\t" + "mul.s $f12, $f3, $f13 \n\t" + "mul.s $f16, $f2, $f1 \n\t" + "msub.s $f16, $f16, %[gain], $f11 \n\t" + "sub.s $f0, $f16, $f12 \n\t" + "madd.s $f14, $f0, $f4, $f1 \n\t" + "madd.s $f14, $f14, $f5, $f13 \n\t" + "swc1 $f8, 24(%[out]) \n\t" + PTR_ADDIU "%[out], 32 \n\t" + PTR_ADDIU "%[in], 32 \n\t" + "addiu %[n], -8 \n\t" + "swc1 $f14, -4(%[out]) \n\t" + "bnez %[n], ff_acelp_apply_order_2_transfer_function_madd%= \n\t" + "swc1 $f1, 4(%[mem]) \n\t" + "swc1 $f0, 0(%[mem]) \n\t" + + "ff_acelp_apply_order_2_transfer_function_end%=: \n\t" + + : [out] "+r" (out), + [in] "+r" (in), [gain] "+f" (gain), + [n] "+r" (n), [mem] "+r" (mem) + : [zero_coeffs] "r" (zero_coeffs), + [pole_coeffs] "r" (pole_coeffs) + : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", + "$f6", "$f7", "$f8", "$f9", "$f10", "$f11", + "$f12", "$f13", "$f14", "$f15", "$f16", "memory" + ); +} +#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ +#endif /* HAVE_INLINE_ASM */ + +void ff_acelp_filter_init_mips(ACELPFContext *c) +{ +#if HAVE_INLINE_ASM +#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 + c->acelp_interpolatef = ff_acelp_interpolatef_mips; + c->acelp_apply_order_2_transfer_function = ff_acelp_apply_order_2_transfer_function_mips; +#endif +#endif +} |