3 * MIPS Technologies, Inc., California.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * Author: Nedeljko Babic (nbabic@mips.com)
31 * various filters for CELP-based codecs optimized for MIPS
33 * This file is part of FFmpeg.
35 * FFmpeg is free software; you can redistribute it and/or
36 * modify it under the terms of the GNU Lesser General Public
37 * License as published by the Free Software Foundation; either
38 * version 2.1 of the License, or (at your option) any later version.
40 * FFmpeg is distributed in the hope that it will be useful,
41 * but WITHOUT ANY WARRANTY; without even the implied warranty of
42 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
43 * Lesser General Public License for more details.
45 * You should have received a copy of the GNU Lesser General Public
46 * License along with FFmpeg; if not, write to the Free Software
47 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
52 * Reference: libavcodec/celp_filters.c
55 #include "libavutil/attributes.h"
56 #include "libavutil/common.h"
57 #include "libavcodec/celp_filters.h"
60 static void ff_celp_lp_synthesis_filterf_mips(float *out
,
61 const float *filter_coeffs
,
62 const float* in
, int buffer_length
,
67 float out0
, out1
, out2
, out3
;
68 float old_out0
, old_out1
, old_out2
, old_out3
;
70 const float *p_filter_coeffs
;
76 b
-= filter_coeffs
[0] * filter_coeffs
[0];
77 c
-= filter_coeffs
[1] * filter_coeffs
[0];
78 c
-= filter_coeffs
[0] * b
;
84 for (n
= 0; n
<= buffer_length
- 4; n
+=4) {
85 p_filter_coeffs
= filter_coeffs
;
94 "lwc1 $f2, 8(%[filter_coeffs]) \n\t"
95 "lwc1 $f1, 4(%[filter_coeffs]) \n\t"
96 "lwc1 $f0, 0(%[filter_coeffs]) \n\t"
97 "nmsub.s %[out0], %[out0], $f2, %[old_out1] \n\t"
98 "nmsub.s %[out1], %[out1], $f2, %[old_out2] \n\t"
99 "nmsub.s %[out2], %[out2], $f2, %[old_out3] \n\t"
100 "lwc1 $f3, 12(%[filter_coeffs]) \n\t"
101 "nmsub.s %[out0], %[out0], $f1, %[old_out2] \n\t"
102 "nmsub.s %[out1], %[out1], $f1, %[old_out3] \n\t"
103 "nmsub.s %[out2], %[out2], $f3, %[old_out2] \n\t"
104 "nmsub.s %[out0], %[out0], $f0, %[old_out3] \n\t"
105 "nmsub.s %[out3], %[out3], $f3, %[old_out3] \n\t"
106 "nmsub.s %[out1], %[out1], $f3, %[old_out1] \n\t"
107 "nmsub.s %[out0], %[out0], $f3, %[old_out0] \n\t"
109 : [out0
]"+f"(out0
), [out1
]"+f"(out1
),
110 [out2
]"+f"(out2
), [out3
]"+f"(out3
)
111 : [old_out0
]"f"(old_out0
), [old_out1
]"f"(old_out1
),
112 [old_out2
]"f"(old_out2
), [old_out3
]"f"(old_out3
),
113 [filter_coeffs
]"r"(filter_coeffs
)
114 : "$f0", "$f1", "$f2", "$f3", "$f4", "memory"
117 for (i
= 5; i
<= filter_length
; i
+= 2) {
119 "lwc1 %[old_out3], -20(%[p_out]) \n\t"
120 "lwc1 $f5, 16(%[p_filter_coeffs]) \n\t"
121 "addiu %[p_out], -8 \n\t"
122 "addiu %[p_filter_coeffs], 8 \n\t"
123 "nmsub.s %[out1], %[out1], $f5, %[old_out0] \n\t"
124 "nmsub.s %[out3], %[out3], $f5, %[old_out2] \n\t"
125 "lwc1 $f4, 12(%[p_filter_coeffs]) \n\t"
126 "lwc1 %[old_out2], -16(%[p_out]) \n\t"
127 "nmsub.s %[out0], %[out0], $f5, %[old_out3] \n\t"
128 "nmsub.s %[out2], %[out2], $f5, %[old_out1] \n\t"
129 "nmsub.s %[out1], %[out1], $f4, %[old_out3] \n\t"
130 "nmsub.s %[out3], %[out3], $f4, %[old_out1] \n\t"
131 "mov.s %[old_out1], %[old_out3] \n\t"
132 "nmsub.s %[out0], %[out0], $f4, %[old_out2] \n\t"
133 "nmsub.s %[out2], %[out2], $f4, %[old_out0] \n\t"
135 : [out0
]"+f"(out0
), [out1
]"+f"(out1
),
136 [out2
]"+f"(out2
), [out3
]"+f"(out3
), [old_out0
]"+f"(old_out0
),
137 [old_out1
]"+f"(old_out1
), [old_out2
]"+f"(old_out2
),
138 [old_out3
]"+f"(old_out3
),[p_filter_coeffs
]"+r"(p_filter_coeffs
),
141 : "$f4", "$f5", "memory"
143 FFSWAP(float, old_out0
, old_out2
);
147 "nmsub.s %[out3], %[out3], %[a], %[out2] \n\t"
148 "nmsub.s %[out2], %[out2], %[a], %[out1] \n\t"
149 "nmsub.s %[out3], %[out3], %[b], %[out1] \n\t"
150 "nmsub.s %[out1], %[out1], %[a], %[out0] \n\t"
151 "nmsub.s %[out2], %[out2], %[b], %[out0] \n\t"
152 "nmsub.s %[out3], %[out3], %[c], %[out0] \n\t"
154 : [out0
]"+f"(out0
), [out1
]"+f"(out1
),
155 [out2
]"+f"(out2
), [out3
]"+f"(out3
)
156 : [a
]"f"(a
), [b
]"f"(b
), [c
]"f"(c
)
175 for (; n
< buffer_length
; n
++) {
176 float out_val
, out_val_i
, fc_val
;
177 p_filter_coeffs
= filter_coeffs
;
180 for (i
= 1; i
<= filter_length
; i
++) {
182 "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t"
183 "lwc1 %[out_val_i], -4(%[p_out]) \n\t"
184 "addiu %[p_filter_coeffs], 4 \n\t"
185 "addiu %[p_out], -4 \n\t"
186 "nmsub.s %[out_val], %[out_val], %[fc_val], %[out_val_i] \n\t"
188 : [fc_val
]"=&f"(fc_val
), [out_val
]"+f"(out_val
),
189 [out_val_i
]"=&f"(out_val_i
), [p_out
]"+r"(p_out
),
190 [p_filter_coeffs
]"+r"(p_filter_coeffs
)
199 static void ff_celp_lp_zero_synthesis_filterf_mips(float *out
,
200 const float *filter_coeffs
,
201 const float *in
, int buffer_length
,
205 float sum_out8
, sum_out7
, sum_out6
, sum_out5
, sum_out4
, fc_val
;
206 float sum_out3
, sum_out2
, sum_out1
;
207 const float *p_filter_coeffs
, *p_in
;
209 for (n
= 0; n
< buffer_length
; n
+=8) {
211 p_filter_coeffs
= filter_coeffs
;
222 /* i is always greater than 0
223 * outer loop is unrolled eight times so there is less memory access
224 * inner loop is unrolled two times
227 "filt_lp_inner%=: \n\t"
228 "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t"
229 "lwc1 $f7, 6*4(%[p_in]) \n\t"
230 "lwc1 $f6, 5*4(%[p_in]) \n\t"
231 "lwc1 $f5, 4*4(%[p_in]) \n\t"
232 "lwc1 $f4, 3*4(%[p_in]) \n\t"
233 "lwc1 $f3, 2*4(%[p_in]) \n\t"
234 "lwc1 $f2, 4(%[p_in]) \n\t"
235 "lwc1 $f1, 0(%[p_in]) \n\t"
236 "lwc1 $f0, -4(%[p_in]) \n\t"
237 "addiu %[i], -2 \n\t"
238 "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f7 \n\t"
239 "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f6 \n\t"
240 "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f5 \n\t"
241 "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f4 \n\t"
242 "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f3 \n\t"
243 "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f2 \n\t"
244 "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f1 \n\t"
245 "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f0 \n\t"
246 "lwc1 %[fc_val], 4(%[p_filter_coeffs]) \n\t"
247 "lwc1 $f7, -8(%[p_in]) \n\t"
248 "addiu %[p_filter_coeffs], 8 \n\t"
249 "addiu %[p_in], -8 \n\t"
250 "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f6 \n\t"
251 "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f5 \n\t"
252 "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f4 \n\t"
253 "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f3 \n\t"
254 "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f2 \n\t"
255 "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f1 \n\t"
256 "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f0 \n\t"
257 "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f7 \n\t"
258 "bgtz %[i], filt_lp_inner%= \n\t"
260 : [sum_out8
]"+f"(sum_out8
), [sum_out7
]"+f"(sum_out7
),
261 [sum_out6
]"+f"(sum_out6
), [sum_out5
]"+f"(sum_out5
),
262 [sum_out4
]"+f"(sum_out4
), [sum_out3
]"+f"(sum_out3
),
263 [sum_out2
]"+f"(sum_out2
), [sum_out1
]"+f"(sum_out1
),
264 [fc_val
]"=&f"(fc_val
), [p_filter_coeffs
]"+r"(p_filter_coeffs
),
265 [p_in
]"+r"(p_in
), [i
]"+r"(i
)
267 : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", "memory"
280 #endif /* HAVE_INLINE_ASM */
282 void ff_celp_filter_init_mips(CELPFContext
*c
)
285 c
->celp_lp_synthesis_filterf
= ff_celp_lp_synthesis_filterf_mips
;
286 c
->celp_lp_zero_synthesis_filterf
= ff_celp_lp_zero_synthesis_filterf_mips
;