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celp_filters_mips.c
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1 /*
2  * Copyright (c) 2012
3  * MIPS Technologies, Inc., California.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
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.
16  *
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
27  * SUCH DAMAGE.
28  *
29  * Author: Nedeljko Babic (nbabic@mips.com)
30  *
31  * various filters for CELP-based codecs optimized for MIPS
32  *
33  * This file is part of FFmpeg.
34  *
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.
39  *
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.
44  *
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
48  */
49 
50 /**
51  * @file
52  * Reference: libavcodec/celp_filters.c
53  */
54 #include "config.h"
55 #include "libavutil/attributes.h"
56 #include "libavutil/common.h"
58 #include "libavutil/mips/asmdefs.h"
59 
60 #if HAVE_INLINE_ASM
61 #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
62 static void ff_celp_lp_synthesis_filterf_mips(float *out,
63  const float *filter_coeffs,
64  const float* in, int buffer_length,
65  int filter_length)
66 {
67  int i,n;
68 
69  float out0, out1, out2, out3;
70  float old_out0, old_out1, old_out2, old_out3;
71  float a,b,c;
72  const float *p_filter_coeffs;
73  float *p_out;
74 
75  a = filter_coeffs[0];
76  b = filter_coeffs[1];
77  c = filter_coeffs[2];
78  b -= filter_coeffs[0] * filter_coeffs[0];
79  c -= filter_coeffs[1] * filter_coeffs[0];
80  c -= filter_coeffs[0] * b;
81 
82  old_out0 = out[-4];
83  old_out1 = out[-3];
84  old_out2 = out[-2];
85  old_out3 = out[-1];
86  for (n = 0; n <= buffer_length - 4; n+=4) {
87  p_filter_coeffs = filter_coeffs;
88  p_out = out;
89 
90  out0 = in[0];
91  out1 = in[1];
92  out2 = in[2];
93  out3 = in[3];
94 
95  __asm__ volatile(
96  "lwc1 $f2, 8(%[filter_coeffs]) \n\t"
97  "lwc1 $f1, 4(%[filter_coeffs]) \n\t"
98  "lwc1 $f0, 0(%[filter_coeffs]) \n\t"
99  "nmsub.s %[out0], %[out0], $f2, %[old_out1] \n\t"
100  "nmsub.s %[out1], %[out1], $f2, %[old_out2] \n\t"
101  "nmsub.s %[out2], %[out2], $f2, %[old_out3] \n\t"
102  "lwc1 $f3, 12(%[filter_coeffs]) \n\t"
103  "nmsub.s %[out0], %[out0], $f1, %[old_out2] \n\t"
104  "nmsub.s %[out1], %[out1], $f1, %[old_out3] \n\t"
105  "nmsub.s %[out2], %[out2], $f3, %[old_out2] \n\t"
106  "nmsub.s %[out0], %[out0], $f0, %[old_out3] \n\t"
107  "nmsub.s %[out3], %[out3], $f3, %[old_out3] \n\t"
108  "nmsub.s %[out1], %[out1], $f3, %[old_out1] \n\t"
109  "nmsub.s %[out0], %[out0], $f3, %[old_out0] \n\t"
110 
111  : [out0]"+f"(out0), [out1]"+f"(out1),
112  [out2]"+f"(out2), [out3]"+f"(out3)
113  : [old_out0]"f"(old_out0), [old_out1]"f"(old_out1),
114  [old_out2]"f"(old_out2), [old_out3]"f"(old_out3),
115  [filter_coeffs]"r"(filter_coeffs)
116  : "$f0", "$f1", "$f2", "$f3", "$f4", "memory"
117  );
118 
119  for (i = 5; i <= filter_length; i += 2) {
120  __asm__ volatile(
121  "lwc1 %[old_out3], -20(%[p_out]) \n\t"
122  "lwc1 $f5, 16(%[p_filter_coeffs]) \n\t"
123  PTR_ADDIU "%[p_out], -8 \n\t"
124  PTR_ADDIU "%[p_filter_coeffs], 8 \n\t"
125  "nmsub.s %[out1], %[out1], $f5, %[old_out0] \n\t"
126  "nmsub.s %[out3], %[out3], $f5, %[old_out2] \n\t"
127  "lwc1 $f4, 12(%[p_filter_coeffs]) \n\t"
128  "lwc1 %[old_out2], -16(%[p_out]) \n\t"
129  "nmsub.s %[out0], %[out0], $f5, %[old_out3] \n\t"
130  "nmsub.s %[out2], %[out2], $f5, %[old_out1] \n\t"
131  "nmsub.s %[out1], %[out1], $f4, %[old_out3] \n\t"
132  "nmsub.s %[out3], %[out3], $f4, %[old_out1] \n\t"
133  "mov.s %[old_out1], %[old_out3] \n\t"
134  "nmsub.s %[out0], %[out0], $f4, %[old_out2] \n\t"
135  "nmsub.s %[out2], %[out2], $f4, %[old_out0] \n\t"
136 
137  : [out0]"+f"(out0), [out1]"+f"(out1),
138  [out2]"+f"(out2), [out3]"+f"(out3), [old_out0]"+f"(old_out0),
139  [old_out1]"+f"(old_out1), [old_out2]"+f"(old_out2),
140  [old_out3]"+f"(old_out3),[p_filter_coeffs]"+r"(p_filter_coeffs),
141  [p_out]"+r"(p_out)
142  :
143  : "$f4", "$f5", "memory"
144  );
145  FFSWAP(float, old_out0, old_out2);
146  }
147 
148  __asm__ volatile(
149  "nmsub.s %[out3], %[out3], %[a], %[out2] \n\t"
150  "nmsub.s %[out2], %[out2], %[a], %[out1] \n\t"
151  "nmsub.s %[out3], %[out3], %[b], %[out1] \n\t"
152  "nmsub.s %[out1], %[out1], %[a], %[out0] \n\t"
153  "nmsub.s %[out2], %[out2], %[b], %[out0] \n\t"
154  "nmsub.s %[out3], %[out3], %[c], %[out0] \n\t"
155 
156  : [out0]"+f"(out0), [out1]"+f"(out1),
157  [out2]"+f"(out2), [out3]"+f"(out3)
158  : [a]"f"(a), [b]"f"(b), [c]"f"(c)
159  );
160 
161  out[0] = out0;
162  out[1] = out1;
163  out[2] = out2;
164  out[3] = out3;
165 
166  old_out0 = out0;
167  old_out1 = out1;
168  old_out2 = out2;
169  old_out3 = out3;
170 
171  out += 4;
172  in += 4;
173  }
174 
175  out -= n;
176  in -= n;
177  for (; n < buffer_length; n++) {
178  float out_val, out_val_i, fc_val;
179  p_filter_coeffs = filter_coeffs;
180  p_out = &out[n];
181  out_val = in[n];
182  for (i = 1; i <= filter_length; i++) {
183  __asm__ volatile(
184  "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t"
185  "lwc1 %[out_val_i], -4(%[p_out]) \n\t"
186  PTR_ADDIU "%[p_filter_coeffs], 4 \n\t"
187  PTR_ADDIU "%[p_out], -4 \n\t"
188  "nmsub.s %[out_val], %[out_val], %[fc_val], %[out_val_i] \n\t"
189 
190  : [fc_val]"=&f"(fc_val), [out_val]"+f"(out_val),
191  [out_val_i]"=&f"(out_val_i), [p_out]"+r"(p_out),
192  [p_filter_coeffs]"+r"(p_filter_coeffs)
193  :
194  : "memory"
195  );
196  }
197  out[n] = out_val;
198  }
199 }
200 
201 static void ff_celp_lp_zero_synthesis_filterf_mips(float *out,
202  const float *filter_coeffs,
203  const float *in, int buffer_length,
204  int filter_length)
205 {
206  int i,n;
207  float sum_out8, sum_out7, sum_out6, sum_out5, sum_out4, fc_val;
208  float sum_out3, sum_out2, sum_out1;
209  const float *p_filter_coeffs, *p_in;
210 
211  for (n = 0; n < buffer_length; n+=8) {
212  p_in = &in[n];
213  p_filter_coeffs = filter_coeffs;
214  sum_out8 = in[n+7];
215  sum_out7 = in[n+6];
216  sum_out6 = in[n+5];
217  sum_out5 = in[n+4];
218  sum_out4 = in[n+3];
219  sum_out3 = in[n+2];
220  sum_out2 = in[n+1];
221  sum_out1 = in[n];
222  i = filter_length;
223 
224  /* i is always greater than 0
225  * outer loop is unrolled eight times so there is less memory access
226  * inner loop is unrolled two times
227  */
228  __asm__ volatile(
229  "filt_lp_inner%=: \n\t"
230  "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t"
231  "lwc1 $f7, 6*4(%[p_in]) \n\t"
232  "lwc1 $f6, 5*4(%[p_in]) \n\t"
233  "lwc1 $f5, 4*4(%[p_in]) \n\t"
234  "lwc1 $f4, 3*4(%[p_in]) \n\t"
235  "lwc1 $f3, 2*4(%[p_in]) \n\t"
236  "lwc1 $f2, 4(%[p_in]) \n\t"
237  "lwc1 $f1, 0(%[p_in]) \n\t"
238  "lwc1 $f0, -4(%[p_in]) \n\t"
239  "addiu %[i], -2 \n\t"
240  "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f7 \n\t"
241  "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f6 \n\t"
242  "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f5 \n\t"
243  "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f4 \n\t"
244  "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f3 \n\t"
245  "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f2 \n\t"
246  "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f1 \n\t"
247  "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f0 \n\t"
248  "lwc1 %[fc_val], 4(%[p_filter_coeffs]) \n\t"
249  "lwc1 $f7, -8(%[p_in]) \n\t"
250  PTR_ADDIU "%[p_filter_coeffs], 8 \n\t"
251  PTR_ADDIU "%[p_in], -8 \n\t"
252  "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f6 \n\t"
253  "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f5 \n\t"
254  "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f4 \n\t"
255  "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f3 \n\t"
256  "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f2 \n\t"
257  "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f1 \n\t"
258  "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f0 \n\t"
259  "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f7 \n\t"
260  "bgtz %[i], filt_lp_inner%= \n\t"
261 
262  : [sum_out8]"+f"(sum_out8), [sum_out7]"+f"(sum_out7),
263  [sum_out6]"+f"(sum_out6), [sum_out5]"+f"(sum_out5),
264  [sum_out4]"+f"(sum_out4), [sum_out3]"+f"(sum_out3),
265  [sum_out2]"+f"(sum_out2), [sum_out1]"+f"(sum_out1),
266  [fc_val]"=&f"(fc_val), [p_filter_coeffs]"+r"(p_filter_coeffs),
267  [p_in]"+r"(p_in), [i]"+r"(i)
268  :
269  : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", "memory"
270  );
271 
272  out[n+7] = sum_out8;
273  out[n+6] = sum_out7;
274  out[n+5] = sum_out6;
275  out[n+4] = sum_out5;
276  out[n+3] = sum_out4;
277  out[n+2] = sum_out3;
278  out[n+1] = sum_out2;
279  out[n] = sum_out1;
280  }
281 }
282 #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
283 #endif /* HAVE_INLINE_ASM */
284 
286 {
287 #if HAVE_INLINE_ASM
288 #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
289  c->celp_lp_synthesis_filterf = ff_celp_lp_synthesis_filterf_mips;
290  c->celp_lp_zero_synthesis_filterf = ff_celp_lp_zero_synthesis_filterf_mips;
291 #endif
292 #endif
293 }
MIPS assembly defines from sys/asm.h but rewritten for use with C inline assembly (rather than from w...
void ff_celp_filter_init_mips(CELPFContext *c)
const char * b
Definition: vf_curves.c:113
Macro definitions for various function/variable attributes.
void(* celp_lp_synthesis_filterf)(float *out, const float *filter_coeffs, const float *in, int buffer_length, int filter_length)
LP synthesis filter.
Definition: celp_filters.h:45
int n
Definition: avisynth_c.h:547
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
#define PTR_ADDIU
Definition: asmdefs.h:48
void(* celp_lp_zero_synthesis_filterf)(float *out, const float *filter_coeffs, const float *in, int buffer_length, int filter_length)
LP zero synthesis filter.
Definition: celp_filters.h:65
common internal and external API header
static double c[64]
FILE * out
Definition: movenc.c:54
#define FFSWAP(type, a, b)
Definition: common.h:99