FFmpeg
aacpsy_mips.h
Go to the documentation of this file.
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: Bojan Zivkovic (bojan@mips.com)
30  *
31  * AAC encoder psychoacoustic model routines optimized
32  * for MIPS floating-point architecture
33  *
34  * This file is part of FFmpeg.
35  *
36  * FFmpeg is free software; you can redistribute it and/or
37  * modify it under the terms of the GNU Lesser General Public
38  * License as published by the Free Software Foundation; either
39  * version 2.1 of the License, or (at your option) any later version.
40  *
41  * FFmpeg is distributed in the hope that it will be useful,
42  * but WITHOUT ANY WARRANTY; without even the implied warranty of
43  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
44  * Lesser General Public License for more details.
45  *
46  * You should have received a copy of the GNU Lesser General Public
47  * License along with FFmpeg; if not, write to the Free Software
48  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
49  */
50 
51 /**
52  * @file
53  * Reference: libavcodec/aacpsy.c
54  */
55 
56 #ifndef AVCODEC_MIPS_AACPSY_MIPS_H
57 #define AVCODEC_MIPS_AACPSY_MIPS_H
58 
59 #include "libavutil/mips/asmdefs.h"
60 
61 #if HAVE_INLINE_ASM && HAVE_MIPSFPU && ( PSY_LAME_FIR_LEN == 21 )
62 #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
63 static void calc_thr_3gpp_mips(const FFPsyWindowInfo *wi, const int num_bands,
64  AacPsyChannel *pch, const uint8_t *band_sizes,
65  const float *coefs, const int cutoff)
66 {
67  int i, w, g;
68  int start = 0, wstart = 0;
69  for (w = 0; w < wi->num_windows*16; w += 16) {
70  wstart = 0;
71  for (g = 0; g < num_bands; g++) {
72  AacPsyBand *band = &pch->band[w+g];
73 
74  float form_factor = 0.0f;
75  float Temp;
76  band->energy = 0.0f;
77  if (wstart < cutoff) {
78  for (i = 0; i < band_sizes[g]; i+=4) {
79  float a, b, c, d;
80  float ax, bx, cx, dx;
81  float *cf = (float *)&coefs[start+i];
82 
83  __asm__ volatile (
84  "lwc1 %[a], 0(%[cf]) \n\t"
85  "lwc1 %[b], 4(%[cf]) \n\t"
86  "lwc1 %[c], 8(%[cf]) \n\t"
87  "lwc1 %[d], 12(%[cf]) \n\t"
88  "abs.s %[a], %[a] \n\t"
89  "abs.s %[b], %[b] \n\t"
90  "abs.s %[c], %[c] \n\t"
91  "abs.s %[d], %[d] \n\t"
92  "sqrt.s %[ax], %[a] \n\t"
93  "sqrt.s %[bx], %[b] \n\t"
94  "sqrt.s %[cx], %[c] \n\t"
95  "sqrt.s %[dx], %[d] \n\t"
96  "madd.s %[e], %[e], %[a], %[a] \n\t"
97  "madd.s %[e], %[e], %[b], %[b] \n\t"
98  "madd.s %[e], %[e], %[c], %[c] \n\t"
99  "madd.s %[e], %[e], %[d], %[d] \n\t"
100  "add.s %[f], %[f], %[ax] \n\t"
101  "add.s %[f], %[f], %[bx] \n\t"
102  "add.s %[f], %[f], %[cx] \n\t"
103  "add.s %[f], %[f], %[dx] \n\t"
104 
105  : [a]"=&f"(a), [b]"=&f"(b),
106  [c]"=&f"(c), [d]"=&f"(d),
107  [e]"+f"(band->energy), [f]"+f"(form_factor),
108  [ax]"=&f"(ax), [bx]"=&f"(bx),
109  [cx]"=&f"(cx), [dx]"=&f"(dx)
110  : [cf]"r"(cf)
111  : "memory"
112  );
113  }
114  }
115 
116  Temp = sqrtf((float)band_sizes[g] / band->energy);
117  band->thr = band->energy * 0.001258925f;
118  band->nz_lines = form_factor * sqrtf(Temp);
119  start += band_sizes[g];
120  wstart += band_sizes[g];
121  }
122  }
123 }
124 
125 static void psy_hp_filter_mips(const float *firbuf, float *hpfsmpl, const float * psy_fir_coeffs)
126 {
127  float sum1, sum2, sum3, sum4;
128  float *fb = (float*)firbuf;
129  float *fb_end = fb + AAC_BLOCK_SIZE_LONG;
130  float *hp = hpfsmpl;
131 
132  float coeff0 = psy_fir_coeffs[1];
133  float coeff1 = psy_fir_coeffs[3];
134  float coeff2 = psy_fir_coeffs[5];
135  float coeff3 = psy_fir_coeffs[7];
136  float coeff4 = psy_fir_coeffs[9];
137 
138  float f1 = 32768.0;
139  __asm__ volatile (
140  ".set push \n\t"
141  ".set noreorder \n\t"
142 
143  "1: \n\t"
144  "lwc1 $f0, 40(%[fb]) \n\t"
145  "lwc1 $f1, 4(%[fb]) \n\t"
146  "lwc1 $f2, 80(%[fb]) \n\t"
147  "lwc1 $f3, 44(%[fb]) \n\t"
148  "lwc1 $f4, 8(%[fb]) \n\t"
149  "madd.s %[sum1], $f0, $f1, %[coeff0] \n\t"
150  "lwc1 $f5, 84(%[fb]) \n\t"
151  "lwc1 $f6, 48(%[fb]) \n\t"
152  "madd.s %[sum2], $f3, $f4, %[coeff0] \n\t"
153  "lwc1 $f7, 12(%[fb]) \n\t"
154  "madd.s %[sum1], %[sum1], $f2, %[coeff0] \n\t"
155  "lwc1 $f8, 88(%[fb]) \n\t"
156  "lwc1 $f9, 52(%[fb]) \n\t"
157  "madd.s %[sum2], %[sum2], $f5, %[coeff0] \n\t"
158  "madd.s %[sum3], $f6, $f7, %[coeff0] \n\t"
159  "lwc1 $f10, 16(%[fb]) \n\t"
160  "lwc1 $f11, 92(%[fb]) \n\t"
161  "madd.s %[sum1], %[sum1], $f7, %[coeff1] \n\t"
162  "lwc1 $f1, 72(%[fb]) \n\t"
163  "madd.s %[sum3], %[sum3], $f8, %[coeff0] \n\t"
164  "madd.s %[sum4], $f9, $f10, %[coeff0] \n\t"
165  "madd.s %[sum2], %[sum2], $f10, %[coeff1] \n\t"
166  "madd.s %[sum1], %[sum1], $f1, %[coeff1] \n\t"
167  "lwc1 $f4, 76(%[fb]) \n\t"
168  "lwc1 $f8, 20(%[fb]) \n\t"
169  "madd.s %[sum4], %[sum4], $f11, %[coeff0] \n\t"
170  "lwc1 $f11, 24(%[fb]) \n\t"
171  "madd.s %[sum2], %[sum2], $f4, %[coeff1] \n\t"
172  "madd.s %[sum1], %[sum1], $f8, %[coeff2] \n\t"
173  "madd.s %[sum3], %[sum3], $f8, %[coeff1] \n\t"
174  "madd.s %[sum4], %[sum4], $f11, %[coeff1] \n\t"
175  "lwc1 $f7, 64(%[fb]) \n\t"
176  "madd.s %[sum2], %[sum2], $f11, %[coeff2] \n\t"
177  "lwc1 $f10, 68(%[fb]) \n\t"
178  "madd.s %[sum3], %[sum3], $f2, %[coeff1] \n\t"
179  "madd.s %[sum4], %[sum4], $f5, %[coeff1] \n\t"
180  "madd.s %[sum1], %[sum1], $f7, %[coeff2] \n\t"
181  "madd.s %[sum2], %[sum2], $f10, %[coeff2] \n\t"
182  "lwc1 $f2, 28(%[fb]) \n\t"
183  "lwc1 $f5, 32(%[fb]) \n\t"
184  "lwc1 $f8, 56(%[fb]) \n\t"
185  "lwc1 $f11, 60(%[fb]) \n\t"
186  "madd.s %[sum3], %[sum3], $f2, %[coeff2] \n\t"
187  "madd.s %[sum4], %[sum4], $f5, %[coeff2] \n\t"
188  "madd.s %[sum1], %[sum1], $f2, %[coeff3] \n\t"
189  "madd.s %[sum2], %[sum2], $f5, %[coeff3] \n\t"
190  "madd.s %[sum3], %[sum3], $f1, %[coeff2] \n\t"
191  "madd.s %[sum4], %[sum4], $f4, %[coeff2] \n\t"
192  "madd.s %[sum1], %[sum1], $f8, %[coeff3] \n\t"
193  "madd.s %[sum2], %[sum2], $f11, %[coeff3] \n\t"
194  "lwc1 $f1, 36(%[fb]) \n\t"
195  PTR_ADDIU "%[fb], %[fb], 16 \n\t"
196  "madd.s %[sum4], %[sum4], $f0, %[coeff3] \n\t"
197  "madd.s %[sum3], %[sum3], $f1, %[coeff3] \n\t"
198  "madd.s %[sum1], %[sum1], $f1, %[coeff4] \n\t"
199  "madd.s %[sum2], %[sum2], $f0, %[coeff4] \n\t"
200  "madd.s %[sum4], %[sum4], $f10, %[coeff3] \n\t"
201  "madd.s %[sum3], %[sum3], $f7, %[coeff3] \n\t"
202  "madd.s %[sum1], %[sum1], $f6, %[coeff4] \n\t"
203  "madd.s %[sum2], %[sum2], $f9, %[coeff4] \n\t"
204  "madd.s %[sum4], %[sum4], $f6, %[coeff4] \n\t"
205  "madd.s %[sum3], %[sum3], $f3, %[coeff4] \n\t"
206  "mul.s %[sum1], %[sum1], %[f1] \n\t"
207  "mul.s %[sum2], %[sum2], %[f1] \n\t"
208  "madd.s %[sum4], %[sum4], $f11, %[coeff4] \n\t"
209  "madd.s %[sum3], %[sum3], $f8, %[coeff4] \n\t"
210  "swc1 %[sum1], 0(%[hp]) \n\t"
211  "swc1 %[sum2], 4(%[hp]) \n\t"
212  "mul.s %[sum4], %[sum4], %[f1] \n\t"
213  "mul.s %[sum3], %[sum3], %[f1] \n\t"
214  "swc1 %[sum4], 12(%[hp]) \n\t"
215  "swc1 %[sum3], 8(%[hp]) \n\t"
216  "bne %[fb], %[fb_end], 1b \n\t"
217  PTR_ADDIU "%[hp], %[hp], 16 \n\t"
218 
219  ".set pop \n\t"
220 
221  : [sum1]"=&f"(sum1), [sum2]"=&f"(sum2),
222  [sum3]"=&f"(sum3), [sum4]"=&f"(sum4),
223  [fb]"+r"(fb), [hp]"+r"(hp)
224  : [coeff0]"f"(coeff0), [coeff1]"f"(coeff1),
225  [coeff2]"f"(coeff2), [coeff3]"f"(coeff3),
226  [coeff4]"f"(coeff4), [fb_end]"r"(fb_end), [f1]"f"(f1)
227  : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6",
228  "$f7", "$f8", "$f9", "$f10", "$f11",
229  "memory"
230  );
231 }
232 
233 #define calc_thr_3gpp calc_thr_3gpp_mips
234 #define psy_hp_filter psy_hp_filter_mips
235 
236 #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
237 #endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
238 #endif /* AVCODEC_MIPS_AACPSY_MIPS_H */
AacPsyBand::thr
float thr
energy threshold
Definition: aacpsy.c:110
AacPsyBand::nz_lines
float nz_lines
number of non-zero spectral lines
Definition: aacpsy.c:112
w
uint8_t w
Definition: llviddspenc.c:38
b
#define b
Definition: input.c:41
asmdefs.h
FFPsyWindowInfo
windowing related information
Definition: psymodel.h:77
AacPsyBand
information for single band used by 3GPP TS26.403-inspired psychoacoustic model
Definition: aacpsy.c:108
g
const char * g
Definition: vf_curves.c:127
sqrtf
static __device__ float sqrtf(float a)
Definition: cuda_runtime.h:184
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
AAC_BLOCK_SIZE_LONG
#define AAC_BLOCK_SIZE_LONG
long block size
Definition: aacpsy.c:96
f
f
Definition: af_crystalizer.c:121
AacPsyChannel::band
AacPsyBand band[128]
bands information
Definition: aacpsy.c:124
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
psy_fir_coeffs
static const float psy_fir_coeffs[]
LAME psy model FIR coefficient table.
Definition: aacpsy.c:219
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:255
fb
#define fb(width, name)
Definition: cbs_av1.c:585
AacPsyBand::energy
float energy
band energy
Definition: aacpsy.c:109
__asm__
__asm__(".macro parse_r var r\n\t" "\\var = -1\n\t" _IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3) _IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7) _IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11) _IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15) _IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19) _IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23) _IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27) _IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31) ".iflt \\var\n\t" ".error \"Unable to parse register name \\r\"\n\t" ".endif\n\t" ".endm")
AacPsyChannel
single/pair channel context for psychoacoustic model
Definition: aacpsy.c:123
PTR_ADDIU
#define PTR_ADDIU
Definition: asmdefs.h:50
d
d
Definition: ffmpeg_filter.c:368
FFPsyWindowInfo::num_windows
int num_windows
number of windows in a frame
Definition: psymodel.h:80
Generated on Thu Apr 18 2024 22:41:56 for FFmpeg by   doxygen 1.8.17