diff options
Diffstat (limited to 'libavcodec/mips/celp_filters_mips.c')
-rw-r--r-- | libavcodec/mips/celp_filters_mips.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/libavcodec/mips/celp_filters_mips.c b/libavcodec/mips/celp_filters_mips.c new file mode 100644 index 0000000..ef5b07b --- /dev/null +++ b/libavcodec/mips/celp_filters_mips.c @@ -0,0 +1,288 @@ +/* + * 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 CELP-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/celp_filters.c + */ +#include "config.h" +#include "libavutil/attributes.h" +#include "libavutil/common.h" +#include "libavcodec/celp_filters.h" + +#if HAVE_INLINE_ASM +static void ff_celp_lp_synthesis_filterf_mips(float *out, + const float *filter_coeffs, + const float* in, int buffer_length, + int filter_length) +{ + int i,n; + + float out0, out1, out2, out3; + float old_out0, old_out1, old_out2, old_out3; + float a,b,c; + const float *p_filter_coeffs; + float *p_out; + + a = filter_coeffs[0]; + b = filter_coeffs[1]; + c = filter_coeffs[2]; + b -= filter_coeffs[0] * filter_coeffs[0]; + c -= filter_coeffs[1] * filter_coeffs[0]; + c -= filter_coeffs[0] * b; + + old_out0 = out[-4]; + old_out1 = out[-3]; + old_out2 = out[-2]; + old_out3 = out[-1]; + for (n = 0; n <= buffer_length - 4; n+=4) { + p_filter_coeffs = filter_coeffs; + p_out = out; + + out0 = in[0]; + out1 = in[1]; + out2 = in[2]; + out3 = in[3]; + + __asm__ volatile( + "lwc1 $f2, 8(%[filter_coeffs]) \n\t" + "lwc1 $f1, 4(%[filter_coeffs]) \n\t" + "lwc1 $f0, 0(%[filter_coeffs]) \n\t" + "nmsub.s %[out0], %[out0], $f2, %[old_out1] \n\t" + "nmsub.s %[out1], %[out1], $f2, %[old_out2] \n\t" + "nmsub.s %[out2], %[out2], $f2, %[old_out3] \n\t" + "lwc1 $f3, 12(%[filter_coeffs]) \n\t" + "nmsub.s %[out0], %[out0], $f1, %[old_out2] \n\t" + "nmsub.s %[out1], %[out1], $f1, %[old_out3] \n\t" + "nmsub.s %[out2], %[out2], $f3, %[old_out2] \n\t" + "nmsub.s %[out0], %[out0], $f0, %[old_out3] \n\t" + "nmsub.s %[out3], %[out3], $f3, %[old_out3] \n\t" + "nmsub.s %[out1], %[out1], $f3, %[old_out1] \n\t" + "nmsub.s %[out0], %[out0], $f3, %[old_out0] \n\t" + + : [out0]"+f"(out0), [out1]"+f"(out1), + [out2]"+f"(out2), [out3]"+f"(out3) + : [old_out0]"f"(old_out0), [old_out1]"f"(old_out1), + [old_out2]"f"(old_out2), [old_out3]"f"(old_out3), + [filter_coeffs]"r"(filter_coeffs) + : "$f0", "$f1", "$f2", "$f3", "$f4", "memory" + ); + + for (i = 5; i <= filter_length; i += 2) { + __asm__ volatile( + "lwc1 %[old_out3], -20(%[p_out]) \n\t" + "lwc1 $f5, 16(%[p_filter_coeffs]) \n\t" + "addiu %[p_out], -8 \n\t" + "addiu %[p_filter_coeffs], 8 \n\t" + "nmsub.s %[out1], %[out1], $f5, %[old_out0] \n\t" + "nmsub.s %[out3], %[out3], $f5, %[old_out2] \n\t" + "lwc1 $f4, 12(%[p_filter_coeffs]) \n\t" + "lwc1 %[old_out2], -16(%[p_out]) \n\t" + "nmsub.s %[out0], %[out0], $f5, %[old_out3] \n\t" + "nmsub.s %[out2], %[out2], $f5, %[old_out1] \n\t" + "nmsub.s %[out1], %[out1], $f4, %[old_out3] \n\t" + "nmsub.s %[out3], %[out3], $f4, %[old_out1] \n\t" + "mov.s %[old_out1], %[old_out3] \n\t" + "nmsub.s %[out0], %[out0], $f4, %[old_out2] \n\t" + "nmsub.s %[out2], %[out2], $f4, %[old_out0] \n\t" + + : [out0]"+f"(out0), [out1]"+f"(out1), + [out2]"+f"(out2), [out3]"+f"(out3), [old_out0]"+f"(old_out0), + [old_out1]"+f"(old_out1), [old_out2]"+f"(old_out2), + [old_out3]"+f"(old_out3),[p_filter_coeffs]"+r"(p_filter_coeffs), + [p_out]"+r"(p_out) + : + : "$f4", "$f5", "memory" + ); + FFSWAP(float, old_out0, old_out2); + } + + __asm__ volatile( + "nmsub.s %[out3], %[out3], %[a], %[out2] \n\t" + "nmsub.s %[out2], %[out2], %[a], %[out1] \n\t" + "nmsub.s %[out3], %[out3], %[b], %[out1] \n\t" + "nmsub.s %[out1], %[out1], %[a], %[out0] \n\t" + "nmsub.s %[out2], %[out2], %[b], %[out0] \n\t" + "nmsub.s %[out3], %[out3], %[c], %[out0] \n\t" + + : [out0]"+f"(out0), [out1]"+f"(out1), + [out2]"+f"(out2), [out3]"+f"(out3) + : [a]"f"(a), [b]"f"(b), [c]"f"(c) + ); + + out[0] = out0; + out[1] = out1; + out[2] = out2; + out[3] = out3; + + old_out0 = out0; + old_out1 = out1; + old_out2 = out2; + old_out3 = out3; + + out += 4; + in += 4; + } + + out -= n; + in -= n; + for (; n < buffer_length; n++) { + float out_val, out_val_i, fc_val; + p_filter_coeffs = filter_coeffs; + p_out = &out[n]; + out_val = in[n]; + for (i = 1; i <= filter_length; i++) { + __asm__ volatile( + "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t" + "lwc1 %[out_val_i], -4(%[p_out]) \n\t" + "addiu %[p_filter_coeffs], 4 \n\t" + "addiu %[p_out], -4 \n\t" + "nmsub.s %[out_val], %[out_val], %[fc_val], %[out_val_i] \n\t" + + : [fc_val]"=&f"(fc_val), [out_val]"+f"(out_val), + [out_val_i]"=&f"(out_val_i), [p_out]"+r"(p_out), + [p_filter_coeffs]"+r"(p_filter_coeffs) + : + : "memory" + ); + } + out[n] = out_val; + } +} + +static void ff_celp_lp_zero_synthesis_filterf_mips(float *out, + const float *filter_coeffs, + const float *in, int buffer_length, + int filter_length) +{ + int i,n; + float sum_out8, sum_out7, sum_out6, sum_out5, sum_out4, fc_val; + float sum_out3, sum_out2, sum_out1; + const float *p_filter_coeffs, *p_in; + + for (n = 0; n < buffer_length; n+=8) { + p_in = &in[n]; + p_filter_coeffs = filter_coeffs; + sum_out8 = in[n+7]; + sum_out7 = in[n+6]; + sum_out6 = in[n+5]; + sum_out5 = in[n+4]; + sum_out4 = in[n+3]; + sum_out3 = in[n+2]; + sum_out2 = in[n+1]; + sum_out1 = in[n]; + i = filter_length; + + /* i is always greater than 0 + * outer loop is unrolled eight times so there is less memory access + * inner loop is unrolled two times + */ + __asm__ volatile( + "filt_lp_inner%=: \n\t" + "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t" + "lwc1 $f7, 6*4(%[p_in]) \n\t" + "lwc1 $f6, 5*4(%[p_in]) \n\t" + "lwc1 $f5, 4*4(%[p_in]) \n\t" + "lwc1 $f4, 3*4(%[p_in]) \n\t" + "lwc1 $f3, 2*4(%[p_in]) \n\t" + "lwc1 $f2, 4(%[p_in]) \n\t" + "lwc1 $f1, 0(%[p_in]) \n\t" + "lwc1 $f0, -4(%[p_in]) \n\t" + "addiu %[i], -2 \n\t" + "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f7 \n\t" + "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f6 \n\t" + "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f5 \n\t" + "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f4 \n\t" + "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f3 \n\t" + "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f2 \n\t" + "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f1 \n\t" + "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f0 \n\t" + "lwc1 %[fc_val], 4(%[p_filter_coeffs]) \n\t" + "lwc1 $f7, -8(%[p_in]) \n\t" + "addiu %[p_filter_coeffs], 8 \n\t" + "addiu %[p_in], -8 \n\t" + "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f6 \n\t" + "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f5 \n\t" + "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f4 \n\t" + "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f3 \n\t" + "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f2 \n\t" + "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f1 \n\t" + "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f0 \n\t" + "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f7 \n\t" + "bgtz %[i], filt_lp_inner%= \n\t" + + : [sum_out8]"+f"(sum_out8), [sum_out7]"+f"(sum_out7), + [sum_out6]"+f"(sum_out6), [sum_out5]"+f"(sum_out5), + [sum_out4]"+f"(sum_out4), [sum_out3]"+f"(sum_out3), + [sum_out2]"+f"(sum_out2), [sum_out1]"+f"(sum_out1), + [fc_val]"=&f"(fc_val), [p_filter_coeffs]"+r"(p_filter_coeffs), + [p_in]"+r"(p_in), [i]"+r"(i) + : + : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", "memory" + ); + + out[n+7] = sum_out8; + out[n+6] = sum_out7; + out[n+5] = sum_out6; + out[n+4] = sum_out5; + out[n+3] = sum_out4; + out[n+2] = sum_out3; + out[n+1] = sum_out2; + out[n] = sum_out1; + } +} +#endif /* HAVE_INLINE_ASM */ + +void ff_celp_filter_init_mips(CELPFContext *c) +{ +#if HAVE_INLINE_ASM + c->celp_lp_synthesis_filterf = ff_celp_lp_synthesis_filterf_mips; + c->celp_lp_zero_synthesis_filterf = ff_celp_lp_zero_synthesis_filterf_mips; +#endif +} |