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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / mips / ac3dsp_mips.c
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2ba45a60
DM		 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 * Authors: Branimir Vasic (bvasic@mips.com)
30 * Nedeljko Babic (nbabic@mips.com)
31 *
32 * Various AC-3 DSP Utils optimized for MIPS
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/ac3dsp.c
54 */
55
56#include "config.h"
57#include "libavcodec/ac3dsp.h"
58#include "libavcodec/ac3.h"
59
60
61#if HAVE_INLINE_ASM
62#if HAVE_MIPSDSPR1
63static void ac3_bit_alloc_calc_bap_mips(int16_t *mask, int16_t *psd,
64 int start, int end,
65 int snr_offset, int floor,
66 const uint8_t *bap_tab, uint8_t *bap)
67{
68 int band, band_end, cond;
69 int m, address1, address2;
70 int16_t *psd1, *psd_end;
71 uint8_t *bap1;
72
73 if (snr_offset == -960) {
74 memset(bap, 0, AC3_MAX_COEFS);
75 return;
76 }
77
78 psd1 = &psd[start];
79 bap1 = &bap[start];
80 band = ff_ac3_bin_to_band_tab[start];
81
82 do {
83 m = (FFMAX(mask[band] - snr_offset - floor, 0) & 0x1FE0) + floor;
84 band_end = ff_ac3_band_start_tab[++band];
85 band_end = FFMIN(band_end, end);
86 psd_end = psd + band_end - 1;
87
88 __asm__ volatile (
89 "slt %[cond], %[psd1], %[psd_end] \n\t"
90 "beqz %[cond], 1f \n\t"
91 "2: \n\t"
92 "lh %[address1], 0(%[psd1]) \n\t"
93 "lh %[address2], 2(%[psd1]) \n\t"
94 "addiu %[psd1], %[psd1], 4 \n\t"
95 "subu %[address1], %[address1], %[m] \n\t"
96 "sra %[address1], %[address1], 5 \n\t"
97 "addiu %[address1], %[address1], -32 \n\t"
98 "shll_s.w %[address1], %[address1], 26 \n\t"
99 "subu %[address2], %[address2], %[m] \n\t"
100 "sra %[address2], %[address2], 5 \n\t"
101 "sra %[address1], %[address1], 26 \n\t"
102 "addiu %[address1], %[address1], 32 \n\t"
103 "lbux %[address1], %[address1](%[bap_tab]) \n\t"
104 "addiu %[address2], %[address2], -32 \n\t"
105 "shll_s.w %[address2], %[address2], 26 \n\t"
106 "sb %[address1], 0(%[bap1]) \n\t"
107 "slt %[cond], %[psd1], %[psd_end] \n\t"
108 "sra %[address2], %[address2], 26 \n\t"
109 "addiu %[address2], %[address2], 32 \n\t"
110 "lbux %[address2], %[address2](%[bap_tab]) \n\t"
111 "sb %[address2], 1(%[bap1]) \n\t"
112 "addiu %[bap1], %[bap1], 2 \n\t"
113 "bnez %[cond], 2b \n\t"
114 "addiu %[psd_end], %[psd_end], 2 \n\t"
115 "slt %[cond], %[psd1], %[psd_end] \n\t"
116 "beqz %[cond], 3f \n\t"
117 "1: \n\t"
118 "lh %[address1], 0(%[psd1]) \n\t"
119 "addiu %[psd1], %[psd1], 2 \n\t"
120 "subu %[address1], %[address1], %[m] \n\t"
121 "sra %[address1], %[address1], 5 \n\t"
122 "addiu %[address1], %[address1], -32 \n\t"
123 "shll_s.w %[address1], %[address1], 26 \n\t"
124 "sra %[address1], %[address1], 26 \n\t"
125 "addiu %[address1], %[address1], 32 \n\t"
126 "lbux %[address1], %[address1](%[bap_tab]) \n\t"
127 "sb %[address1], 0(%[bap1]) \n\t"
128 "addiu %[bap1], %[bap1], 1 \n\t"
129 "3: \n\t"
130
131 : [address1]"=&r"(address1), [address2]"=&r"(address2),
132 [cond]"=&r"(cond), [bap1]"+r"(bap1),
133 [psd1]"+r"(psd1), [psd_end]"+r"(psd_end)
134 : [m]"r"(m), [bap_tab]"r"(bap_tab)
135 : "memory"
136 );
137 } while (end > band_end);
138}
139
140static void ac3_update_bap_counts_mips(uint16_t mant_cnt[16], uint8_t *bap,
141 int len)
142{
143 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
144
145 __asm__ volatile (
146 "andi %[temp3], %[len], 3 \n\t"
147 "addu %[temp2], %[bap], %[len] \n\t"
148 "addu %[temp4], %[bap], %[temp3] \n\t"
149 "beq %[temp2], %[temp4], 4f \n\t"
150 "1: \n\t"
151 "lbu %[temp0], -1(%[temp2]) \n\t"
152 "lbu %[temp5], -2(%[temp2]) \n\t"
153 "lbu %[temp6], -3(%[temp2]) \n\t"
154 "sll %[temp0], %[temp0], 1 \n\t"
155 "addu %[temp0], %[mant_cnt], %[temp0] \n\t"
156 "sll %[temp5], %[temp5], 1 \n\t"
157 "addu %[temp5], %[mant_cnt], %[temp5] \n\t"
158 "lhu %[temp1], 0(%[temp0]) \n\t"
159 "sll %[temp6], %[temp6], 1 \n\t"
160 "addu %[temp6], %[mant_cnt], %[temp6] \n\t"
161 "addiu %[temp1], %[temp1], 1 \n\t"
162 "sh %[temp1], 0(%[temp0]) \n\t"
163 "lhu %[temp1], 0(%[temp5]) \n\t"
164 "lbu %[temp7], -4(%[temp2]) \n\t"
165 "addiu %[temp2], %[temp2], -4 \n\t"
166 "addiu %[temp1], %[temp1], 1 \n\t"
167 "sh %[temp1], 0(%[temp5]) \n\t"
168 "lhu %[temp1], 0(%[temp6]) \n\t"
169 "sll %[temp7], %[temp7], 1 \n\t"
170 "addu %[temp7], %[mant_cnt], %[temp7] \n\t"
171 "addiu %[temp1], %[temp1],1 \n\t"
172 "sh %[temp1], 0(%[temp6]) \n\t"
173 "lhu %[temp1], 0(%[temp7]) \n\t"
174 "addiu %[temp1], %[temp1], 1 \n\t"
175 "sh %[temp1], 0(%[temp7]) \n\t"
176 "bne %[temp2], %[temp4], 1b \n\t"
177 "4: \n\t"
178 "beqz %[temp3], 2f \n\t"
179 "3: \n\t"
180 "addiu %[temp3], %[temp3], -1 \n\t"
181 "lbu %[temp0], -1(%[temp2]) \n\t"
182 "addiu %[temp2], %[temp2], -1 \n\t"
183 "sll %[temp0], %[temp0], 1 \n\t"
184 "addu %[temp0], %[mant_cnt], %[temp0] \n\t"
185 "lhu %[temp1], 0(%[temp0]) \n\t"
186 "addiu %[temp1], %[temp1], 1 \n\t"
187 "sh %[temp1], 0(%[temp0]) \n\t"
188 "bgtz %[temp3], 3b \n\t"
189 "2: \n\t"
190
191 : [temp0] "=&r" (temp0), [temp1] "=&r" (temp1),
192 [temp2] "=&r" (temp2), [temp3] "=&r" (temp3),
193 [temp4] "=&r" (temp4), [temp5] "=&r" (temp5),
194 [temp6] "=&r" (temp6), [temp7] "=&r" (temp7)
195 : [len] "r" (len), [bap] "r" (bap),
196 [mant_cnt] "r" (mant_cnt)
197 : "memory"
198 );
199}
200#endif
201
202#if HAVE_MIPSFPU && HAVE_MIPS32R2
203static void float_to_fixed24_mips(int32_t *dst, const float *src, unsigned int len)
204{
205 const float scale = 1 << 24;
206 float src0, src1, src2, src3, src4, src5, src6, src7;
207 int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
208
209 do {
210 __asm__ volatile (
211 "lwc1 %[src0], 0(%[src]) \n\t"
212 "lwc1 %[src1], 4(%[src]) \n\t"
213 "lwc1 %[src2], 8(%[src]) \n\t"
214 "lwc1 %[src3], 12(%[src]) \n\t"
215 "lwc1 %[src4], 16(%[src]) \n\t"
216 "lwc1 %[src5], 20(%[src]) \n\t"
217 "lwc1 %[src6], 24(%[src]) \n\t"
218 "lwc1 %[src7], 28(%[src]) \n\t"
219 "mul.s %[src0], %[src0], %[scale] \n\t"
220 "mul.s %[src1], %[src1], %[scale] \n\t"
221 "mul.s %[src2], %[src2], %[scale] \n\t"
222 "mul.s %[src3], %[src3], %[scale] \n\t"
223 "mul.s %[src4], %[src4], %[scale] \n\t"
224 "mul.s %[src5], %[src5], %[scale] \n\t"
225 "mul.s %[src6], %[src6], %[scale] \n\t"
226 "mul.s %[src7], %[src7], %[scale] \n\t"
227 "cvt.w.s %[src0], %[src0] \n\t"
228 "cvt.w.s %[src1], %[src1] \n\t"
229 "cvt.w.s %[src2], %[src2] \n\t"
230 "cvt.w.s %[src3], %[src3] \n\t"
231 "cvt.w.s %[src4], %[src4] \n\t"
232 "cvt.w.s %[src5], %[src5] \n\t"
233 "cvt.w.s %[src6], %[src6] \n\t"
234 "cvt.w.s %[src7], %[src7] \n\t"
235 "mfc1 %[temp0], %[src0] \n\t"
236 "mfc1 %[temp1], %[src1] \n\t"
237 "mfc1 %[temp2], %[src2] \n\t"
238 "mfc1 %[temp3], %[src3] \n\t"
239 "mfc1 %[temp4], %[src4] \n\t"
240 "mfc1 %[temp5], %[src5] \n\t"
241 "mfc1 %[temp6], %[src6] \n\t"
242 "mfc1 %[temp7], %[src7] \n\t"
243 "sw %[temp0], 0(%[dst]) \n\t"
244 "sw %[temp1], 4(%[dst]) \n\t"
245 "sw %[temp2], 8(%[dst]) \n\t"
246 "sw %[temp3], 12(%[dst]) \n\t"
247 "sw %[temp4], 16(%[dst]) \n\t"
248 "sw %[temp5], 20(%[dst]) \n\t"
249 "sw %[temp6], 24(%[dst]) \n\t"
250 "sw %[temp7], 28(%[dst]) \n\t"
251
252 : [dst] "+r" (dst), [src] "+r" (src),
253 [src0] "=&f" (src0), [src1] "=&f" (src1),
254 [src2] "=&f" (src2), [src3] "=&f" (src3),
255 [src4] "=&f" (src4), [src5] "=&f" (src5),
256 [src6] "=&f" (src6), [src7] "=&f" (src7),
257 [temp0] "=r" (temp0), [temp1] "=r" (temp1),
258 [temp2] "=r" (temp2), [temp3] "=r" (temp3),
259 [temp4] "=r" (temp4), [temp5] "=r" (temp5),
260 [temp6] "=r" (temp6), [temp7] "=r" (temp7)
261 : [scale] "f" (scale)
262 : "memory"
263 );
264 src = src + 8;
265 dst = dst + 8;
266 len -= 8;
267 } while (len > 0);
268}
269
270static void ac3_downmix_mips(float **samples, float (*matrix)[2],
271 int out_ch, int in_ch, int len)
272{
273 int i, j, i1, i2, i3;
274 float v0, v1, v2, v3;
275 float v4, v5, v6, v7;
276 float samples0, samples1, samples2, samples3, matrix_j, matrix_j2;
277 float *samples_p,*matrix_p, **samples_x, **samples_end, **samples_sw;
278
279 __asm__ volatile(
280 ".set push \n\t"
281 ".set noreorder \n\t"
282
283 "li %[i1], 2 \n\t"
284 "sll %[len], 2 \n\t"
285 "move %[i], $zero \n\t"
286 "sll %[j], %[in_ch], 2 \n\t"
287
288 "bne %[out_ch], %[i1], 3f \n\t" // if (out_ch == 2)
289 " li %[i2], 1 \n\t"
290
291 "2: \n\t" // start of the for loop (for (i = 0; i < len; i+=4))
292 "move %[matrix_p], %[matrix] \n\t"
293 "move %[samples_x], %[samples] \n\t"
294 "mtc1 $zero, %[v0] \n\t"
295 "mtc1 $zero, %[v1] \n\t"
296 "mtc1 $zero, %[v2] \n\t"
297 "mtc1 $zero, %[v3] \n\t"
298 "mtc1 $zero, %[v4] \n\t"
299 "mtc1 $zero, %[v5] \n\t"
300 "mtc1 $zero, %[v6] \n\t"
301 "mtc1 $zero, %[v7] \n\t"
302 "addiu %[i1], %[i], 4 \n\t"
303 "addiu %[i2], %[i], 8 \n\t"
304 "lw %[samples_p], 0(%[samples_x]) \n\t"
305 "addiu %[i3], %[i], 12 \n\t"
306 "addu %[samples_end], %[samples_x], %[j] \n\t"
307 "move %[samples_sw], %[samples_p] \n\t"
308
309 "1: \n\t" // start of the inner for loop (for (j = 0; j < in_ch; j++))
310 "lwc1 %[matrix_j], 0(%[matrix_p]) \n\t"
311 "lwc1 %[matrix_j2], 4(%[matrix_p]) \n\t"
312 "lwxc1 %[samples0], %[i](%[samples_p]) \n\t"
313 "lwxc1 %[samples1], %[i1](%[samples_p]) \n\t"
314 "lwxc1 %[samples2], %[i2](%[samples_p]) \n\t"
315 "lwxc1 %[samples3], %[i3](%[samples_p]) \n\t"
316 "addiu %[matrix_p], 8 \n\t"
317 "addiu %[samples_x], 4 \n\t"
318 "madd.s %[v0], %[v0], %[samples0], %[matrix_j] \n\t"
319 "madd.s %[v1], %[v1], %[samples1], %[matrix_j] \n\t"
320 "madd.s %[v2], %[v2], %[samples2], %[matrix_j] \n\t"
321 "madd.s %[v3], %[v3], %[samples3], %[matrix_j] \n\t"
322 "madd.s %[v4], %[v4], %[samples0], %[matrix_j2]\n\t"
323 "madd.s %[v5], %[v5], %[samples1], %[matrix_j2]\n\t"
324 "madd.s %[v6], %[v6], %[samples2], %[matrix_j2]\n\t"
325 "madd.s %[v7], %[v7], %[samples3], %[matrix_j2]\n\t"
326 "bne %[samples_x], %[samples_end], 1b \n\t"
327 " lw %[samples_p], 0(%[samples_x]) \n\t"
328
329 "lw %[samples_p], 4(%[samples]) \n\t"
330 "swxc1 %[v0], %[i](%[samples_sw]) \n\t"
331 "swxc1 %[v1], %[i1](%[samples_sw]) \n\t"
332 "swxc1 %[v2], %[i2](%[samples_sw]) \n\t"
333 "swxc1 %[v3], %[i3](%[samples_sw]) \n\t"
334 "swxc1 %[v4], %[i](%[samples_p]) \n\t"
335 "addiu %[i], 16 \n\t"
336 "swxc1 %[v5], %[i1](%[samples_p]) \n\t"
337 "swxc1 %[v6], %[i2](%[samples_p]) \n\t"
338 "bne %[i], %[len], 2b \n\t"
339 " swxc1 %[v7], %[i3](%[samples_p]) \n\t"
340
341 "3: \n\t"
342 "bne %[out_ch], %[i2], 6f \n\t" // if (out_ch == 1)
343 " nop \n\t"
344
345 "5: \n\t" // start of the outer for loop (for (i = 0; i < len; i+=4))
346 "move %[matrix_p], %[matrix] \n\t"
347 "move %[samples_x], %[samples] \n\t"
348 "mtc1 $zero, %[v0] \n\t"
349 "mtc1 $zero, %[v1] \n\t"
350 "mtc1 $zero, %[v2] \n\t"
351 "mtc1 $zero, %[v3] \n\t"
352 "addiu %[i1], %[i], 4 \n\t"
353 "addiu %[i2], %[i], 8 \n\t"
354 "lw %[samples_p], 0(%[samples_x]) \n\t"
355 "addiu %[i3], %[i], 12 \n\t"
356 "addu %[samples_end], %[samples_x], %[j] \n\t"
357 "move %[samples_sw], %[samples_p] \n\t"
358
359 "4: \n\t" // start of the inner for loop (for (j = 0; j < in_ch; j++))
360 "lwc1 %[matrix_j], 0(%[matrix_p]) \n\t"
361 "lwxc1 %[samples0], %[i](%[samples_p]) \n\t"
362 "lwxc1 %[samples1], %[i1](%[samples_p]) \n\t"
363 "lwxc1 %[samples2], %[i2](%[samples_p]) \n\t"
364 "lwxc1 %[samples3], %[i3](%[samples_p]) \n\t"
365 "addiu %[matrix_p], 8 \n\t"
366 "addiu %[samples_x], 4 \n\t"
367 "madd.s %[v0], %[v0], %[samples0], %[matrix_j] \n\t"
368 "madd.s %[v1], %[v1], %[samples1], %[matrix_j] \n\t"
369 "madd.s %[v2], %[v2], %[samples2], %[matrix_j] \n\t"
370 "madd.s %[v3], %[v3], %[samples3], %[matrix_j] \n\t"
371 "bne %[samples_x], %[samples_end], 4b \n\t"
372 " lw %[samples_p], 0(%[samples_x]) \n\t"
373
374 "swxc1 %[v0], %[i](%[samples_sw]) \n\t"
375 "addiu %[i], 16 \n\t"
376 "swxc1 %[v1], %[i1](%[samples_sw]) \n\t"
377 "swxc1 %[v2], %[i2](%[samples_sw]) \n\t"
378 "bne %[i], %[len], 5b \n\t"
379 " swxc1 %[v3], %[i3](%[samples_sw]) \n\t"
380 "6: \n\t"
381
382 ".set pop"
383 :[samples_p]"=&r"(samples_p), [matrix_j]"=&f"(matrix_j), [matrix_j2]"=&f"(matrix_j2),
384 [samples0]"=&f"(samples0), [samples1]"=&f"(samples1),
385 [samples2]"=&f"(samples2), [samples3]"=&f"(samples3),
386 [v0]"=&f"(v0), [v1]"=&f"(v1), [v2]"=&f"(v2), [v3]"=&f"(v3),
387 [v4]"=&f"(v4), [v5]"=&f"(v5), [v6]"=&f"(v6), [v7]"=&f"(v7),
388 [samples_x]"=&r"(samples_x), [matrix_p]"=&r"(matrix_p),
389 [samples_end]"=&r"(samples_end), [samples_sw]"=&r"(samples_sw),
390 [i1]"=&r"(i1), [i2]"=&r"(i2), [i3]"=&r"(i3), [i]"=&r"(i),
391 [j]"=&r"(j), [len]"+r"(len)
392 :[samples]"r"(samples), [matrix]"r"(matrix),
393 [in_ch]"r"(in_ch), [out_ch]"r"(out_ch)
394 :"memory"
395 );
396}
397#endif
398#endif /* HAVE_INLINE_ASM */
399
400void ff_ac3dsp_init_mips(AC3DSPContext *c, int bit_exact) {
401#if HAVE_INLINE_ASM
402#if HAVE_MIPSDSPR1
403 c->bit_alloc_calc_bap = ac3_bit_alloc_calc_bap_mips;
404 c->update_bap_counts = ac3_update_bap_counts_mips;
405#endif
406#if HAVE_MIPSFPU && HAVE_MIPS32R2
407 c->float_to_fixed24 = float_to_fixed24_mips;
408 c->downmix = ac3_downmix_mips;
409#endif
410#endif
411
412}
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