Glenn Kasten | 632e0c0 | 2011-12-16 10:42:58 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Andy Hung | e0ccb20 | 2014-07-27 20:11:31 -0700 | [diff] [blame^] | 17 | #include <cutils/bitops.h> /* for popcount() */ |
Glenn Kasten | 632e0c0 | 2011-12-16 10:42:58 -0800 | [diff] [blame] | 18 | #include <audio_utils/primitives.h> |
Andy Hung | e0ccb20 | 2014-07-27 20:11:31 -0700 | [diff] [blame^] | 19 | #include "private/private.h" |
Glenn Kasten | 632e0c0 | 2011-12-16 10:42:58 -0800 | [diff] [blame] | 20 | |
Glenn Kasten | 7ef795a | 2013-07-17 07:25:05 -0700 | [diff] [blame] | 21 | void ditherAndClamp(int32_t* out, const int32_t *sums, size_t c) |
Glenn Kasten | 632e0c0 | 2011-12-16 10:42:58 -0800 | [diff] [blame] | 22 | { |
| 23 | size_t i; |
| 24 | for (i=0 ; i<c ; i++) { |
| 25 | int32_t l = *sums++; |
| 26 | int32_t r = *sums++; |
| 27 | int32_t nl = l >> 12; |
| 28 | int32_t nr = r >> 12; |
| 29 | l = clamp16(nl); |
| 30 | r = clamp16(nr); |
| 31 | *out++ = (r<<16) | (l & 0xFFFF); |
| 32 | } |
| 33 | } |
Glenn Kasten | ddb2e93 | 2012-01-16 13:21:31 -0800 | [diff] [blame] | 34 | |
| 35 | void memcpy_to_i16_from_u8(int16_t *dst, const uint8_t *src, size_t count) |
| 36 | { |
| 37 | dst += count; |
| 38 | src += count; |
| 39 | while (count--) { |
| 40 | *--dst = (int16_t)(*--src - 0x80) << 8; |
| 41 | } |
| 42 | } |
Glenn Kasten | 7a0baca | 2012-07-19 13:59:50 -0700 | [diff] [blame] | 43 | |
Glenn Kasten | 78da2ac | 2012-11-12 14:39:36 -0800 | [diff] [blame] | 44 | void memcpy_to_u8_from_i16(uint8_t *dst, const int16_t *src, size_t count) |
| 45 | { |
| 46 | while (count--) { |
| 47 | *dst++ = (*src++ >> 8) + 0x80; |
| 48 | } |
| 49 | } |
| 50 | |
Glenn Kasten | 5d43605 | 2013-06-21 14:01:54 -0700 | [diff] [blame] | 51 | void memcpy_to_i16_from_i32(int16_t *dst, const int32_t *src, size_t count) |
| 52 | { |
| 53 | while (count--) { |
| 54 | *dst++ = *src++ >> 16; |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | void memcpy_to_i16_from_float(int16_t *dst, const float *src, size_t count) |
| 59 | { |
| 60 | while (count--) { |
Andy Hung | 65b5ccd | 2014-03-18 12:00:55 -0700 | [diff] [blame] | 61 | *dst++ = clamp16_from_float(*src++); |
Glenn Kasten | 5d43605 | 2013-06-21 14:01:54 -0700 | [diff] [blame] | 62 | } |
| 63 | } |
| 64 | |
Andy Hung | b878e52 | 2014-04-04 13:05:43 -0700 | [diff] [blame] | 65 | void memcpy_to_float_from_q4_27(float *dst, const int32_t *src, size_t count) |
Andy Hung | aecb15e | 2014-02-24 19:07:40 -0800 | [diff] [blame] | 66 | { |
Andy Hung | b878e52 | 2014-04-04 13:05:43 -0700 | [diff] [blame] | 67 | while (count--) { |
Andy Hung | d2a25cd | 2014-04-02 11:23:56 -0700 | [diff] [blame] | 68 | *dst++ = float_from_q4_27(*src++); |
Andy Hung | aecb15e | 2014-02-24 19:07:40 -0800 | [diff] [blame] | 69 | } |
| 70 | } |
| 71 | |
Andy Hung | e0454e2 | 2014-03-06 13:04:56 -0800 | [diff] [blame] | 72 | void memcpy_to_float_from_i16(float *dst, const int16_t *src, size_t count) |
| 73 | { |
| 74 | while (count--) { |
| 75 | *dst++ = float_from_i16(*src++); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | void memcpy_to_float_from_p24(float *dst, const uint8_t *src, size_t count) |
| 80 | { |
| 81 | while (count--) { |
| 82 | *dst++ = float_from_p24(src); |
| 83 | src += 3; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | void memcpy_to_i16_from_p24(int16_t *dst, const uint8_t *src, size_t count) |
| 88 | { |
| 89 | while (count--) { |
| 90 | #ifdef HAVE_BIG_ENDIAN |
| 91 | *dst++ = src[1] | (src[0] << 8); |
| 92 | #else |
| 93 | *dst++ = src[1] | (src[2] << 8); |
| 94 | #endif |
| 95 | src += 3; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | void memcpy_to_p24_from_i16(uint8_t *dst, const int16_t *src, size_t count) |
| 100 | { |
| 101 | while (count--) { |
| 102 | #ifdef HAVE_BIG_ENDIAN |
| 103 | *dst++ = *src >> 8; |
| 104 | *dst++ = *src++; |
| 105 | *dst++ = 0; |
| 106 | #else |
| 107 | *dst++ = 0; |
| 108 | *dst++ = *src; |
| 109 | *dst++ = *src++ >> 8; |
| 110 | #endif |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | void memcpy_to_p24_from_float(uint8_t *dst, const float *src, size_t count) |
| 115 | { |
| 116 | while (count--) { |
| 117 | int32_t ival = clamp24_from_float(*src++); |
| 118 | |
| 119 | #ifdef HAVE_BIG_ENDIAN |
| 120 | *dst++ = ival >> 16; |
| 121 | *dst++ = ival >> 8; |
| 122 | *dst++ = ival; |
| 123 | #else |
| 124 | *dst++ = ival; |
| 125 | *dst++ = ival >> 8; |
| 126 | *dst++ = ival >> 16; |
| 127 | #endif |
| 128 | } |
| 129 | } |
| 130 | |
Glenn Kasten | eee4515 | 2014-05-02 12:41:04 -0700 | [diff] [blame] | 131 | void memcpy_to_p24_from_q8_23(uint8_t *dst, const int32_t *src, size_t count) |
| 132 | { |
| 133 | while (count--) { |
| 134 | int32_t ival = clamp24_from_q8_23(*src++); |
| 135 | |
| 136 | #ifdef HAVE_BIG_ENDIAN |
| 137 | *dst++ = ival >> 16; |
| 138 | *dst++ = ival >> 8; |
| 139 | *dst++ = ival; |
| 140 | #else |
| 141 | *dst++ = ival; |
| 142 | *dst++ = ival >> 8; |
| 143 | *dst++ = ival >> 16; |
| 144 | #endif |
| 145 | } |
| 146 | } |
| 147 | |
Andy Hung | d582988 | 2014-03-12 11:46:15 -0700 | [diff] [blame] | 148 | void memcpy_to_q8_23_from_i16(int32_t *dst, const int16_t *src, size_t count) |
| 149 | { |
| 150 | while (count--) { |
| 151 | *dst++ = (int32_t)*src++ << 8; |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | void memcpy_to_q8_23_from_float_with_clamp(int32_t *dst, const float *src, size_t count) |
| 156 | { |
| 157 | while (count--) { |
| 158 | *dst++ = clamp24_from_float(*src++); |
| 159 | } |
| 160 | } |
| 161 | |
Andy Hung | b878e52 | 2014-04-04 13:05:43 -0700 | [diff] [blame] | 162 | void memcpy_to_q4_27_from_float(int32_t *dst, const float *src, size_t count) |
| 163 | { |
| 164 | while (count--) { |
| 165 | *dst++ = clampq4_27_from_float(*src++); |
| 166 | } |
| 167 | } |
| 168 | |
Andy Hung | d582988 | 2014-03-12 11:46:15 -0700 | [diff] [blame] | 169 | void memcpy_to_i16_from_q8_23(int16_t *dst, const int32_t *src, size_t count) |
| 170 | { |
| 171 | while (count--) { |
| 172 | *dst++ = clamp16(*src++ >> 8); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | void memcpy_to_float_from_q8_23(float *dst, const int32_t *src, size_t count) |
| 177 | { |
| 178 | while (count--) { |
| 179 | *dst++ = float_from_q8_23(*src++); |
| 180 | } |
| 181 | } |
| 182 | |
Andy Hung | 2c63fb6 | 2014-03-12 14:44:12 -0700 | [diff] [blame] | 183 | void memcpy_to_i32_from_i16(int32_t *dst, const int16_t *src, size_t count) |
| 184 | { |
| 185 | while (count--) { |
| 186 | *dst++ = (int32_t)*src++ << 16; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | void memcpy_to_i32_from_float(int32_t *dst, const float *src, size_t count) |
| 191 | { |
| 192 | while (count--) { |
| 193 | *dst++ = clamp32_from_float(*src++); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | void memcpy_to_float_from_i32(float *dst, const int32_t *src, size_t count) |
| 198 | { |
| 199 | while (count--) { |
| 200 | *dst++ = float_from_i32(*src++); |
| 201 | } |
| 202 | } |
| 203 | |
Glenn Kasten | 7a0baca | 2012-07-19 13:59:50 -0700 | [diff] [blame] | 204 | void downmix_to_mono_i16_from_stereo_i16(int16_t *dst, const int16_t *src, size_t count) |
| 205 | { |
| 206 | while (count--) { |
| 207 | *dst++ = (int16_t)(((int32_t)src[0] + (int32_t)src[1]) >> 1); |
| 208 | src += 2; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | void upmix_to_stereo_i16_from_mono_i16(int16_t *dst, const int16_t *src, size_t count) |
| 213 | { |
| 214 | while (count--) { |
| 215 | int32_t temp = *src++; |
| 216 | dst[0] = temp; |
| 217 | dst[1] = temp; |
| 218 | dst += 2; |
| 219 | } |
| 220 | } |
Glenn Kasten | eb247df | 2014-02-21 10:00:51 -0800 | [diff] [blame] | 221 | |
| 222 | size_t nonZeroMono32(const int32_t *samples, size_t count) |
| 223 | { |
| 224 | size_t nonZero = 0; |
| 225 | while (count-- > 0) { |
| 226 | if (*samples++ != 0) { |
| 227 | nonZero++; |
| 228 | } |
| 229 | } |
| 230 | return nonZero; |
| 231 | } |
| 232 | |
| 233 | size_t nonZeroMono16(const int16_t *samples, size_t count) |
| 234 | { |
| 235 | size_t nonZero = 0; |
| 236 | while (count-- > 0) { |
| 237 | if (*samples++ != 0) { |
| 238 | nonZero++; |
| 239 | } |
| 240 | } |
| 241 | return nonZero; |
| 242 | } |
| 243 | |
| 244 | size_t nonZeroStereo32(const int32_t *frames, size_t count) |
| 245 | { |
| 246 | size_t nonZero = 0; |
| 247 | while (count-- > 0) { |
| 248 | if (frames[0] != 0 || frames[1] != 0) { |
| 249 | nonZero++; |
| 250 | } |
| 251 | frames += 2; |
| 252 | } |
| 253 | return nonZero; |
| 254 | } |
| 255 | |
| 256 | size_t nonZeroStereo16(const int16_t *frames, size_t count) |
| 257 | { |
| 258 | size_t nonZero = 0; |
| 259 | while (count-- > 0) { |
| 260 | if (frames[0] != 0 || frames[1] != 0) { |
| 261 | nonZero++; |
| 262 | } |
| 263 | frames += 2; |
| 264 | } |
| 265 | return nonZero; |
| 266 | } |
Andy Hung | 3af2af2 | 2014-05-22 18:40:30 -0700 | [diff] [blame] | 267 | |
Andy Hung | 3af2af2 | 2014-05-22 18:40:30 -0700 | [diff] [blame] | 268 | /* |
| 269 | * C macro to do channel mask copying independent of dst/src sample type. |
| 270 | * Don't pass in any expressions for the macro arguments here. |
| 271 | */ |
| 272 | #define copy_frame_by_mask(dst, dmask, src, smask, count, zero) \ |
| 273 | { \ |
| 274 | uint32_t bit, ormask; \ |
| 275 | while (count--) { \ |
| 276 | ormask = dmask | smask; \ |
| 277 | while (ormask) { \ |
| 278 | bit = ormask & -ormask; /* get lowest bit */ \ |
| 279 | ormask ^= bit; /* remove lowest bit */ \ |
| 280 | if (dmask & bit) { \ |
| 281 | *dst++ = smask & bit ? *src++ : zero; \ |
| 282 | } else { /* source channel only */ \ |
| 283 | ++src; \ |
| 284 | } \ |
| 285 | } \ |
| 286 | } \ |
| 287 | } |
| 288 | |
| 289 | void memcpy_by_channel_mask(void *dst, uint32_t dst_mask, |
| 290 | const void *src, uint32_t src_mask, size_t sample_size, size_t count) |
| 291 | { |
| 292 | #if 0 |
| 293 | /* alternate way of handling memcpy_by_channel_mask by using the idxary */ |
| 294 | int8_t idxary[32]; |
| 295 | uint32_t src_channels = popcount(src_mask); |
| 296 | uint32_t dst_channels = |
| 297 | memcpy_by_index_array_initialization(idxary, 32, dst_mask, src_mask); |
| 298 | |
| 299 | memcpy_by_idxary(dst, dst_channels, src, src_channels, idxary, sample_size, count); |
| 300 | #else |
| 301 | if (dst_mask == src_mask) { |
| 302 | memcpy(dst, src, sample_size * popcount(dst_mask) * count); |
| 303 | return; |
| 304 | } |
| 305 | switch (sample_size) { |
| 306 | case 1: { |
| 307 | uint8_t *udst = (uint8_t*)dst; |
| 308 | const uint8_t *usrc = (const uint8_t*)src; |
| 309 | |
| 310 | copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, 0); |
| 311 | } break; |
| 312 | case 2: { |
| 313 | uint16_t *udst = (uint16_t*)dst; |
| 314 | const uint16_t *usrc = (const uint16_t*)src; |
| 315 | |
| 316 | copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, 0); |
| 317 | } break; |
| 318 | case 3: { /* could be slow. use a struct to represent 3 bytes of data. */ |
| 319 | uint8x3_t *udst = (uint8x3_t*)dst; |
| 320 | const uint8x3_t *usrc = (const uint8x3_t*)src; |
| 321 | static const uint8x3_t zero; /* tricky - we use this to zero out a sample */ |
| 322 | |
| 323 | copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, zero); |
| 324 | } break; |
| 325 | case 4: { |
| 326 | uint32_t *udst = (uint32_t*)dst; |
| 327 | const uint32_t *usrc = (const uint32_t*)src; |
| 328 | |
| 329 | copy_frame_by_mask(udst, dst_mask, usrc, src_mask, count, 0); |
| 330 | } break; |
| 331 | default: |
| 332 | abort(); /* illegal value */ |
| 333 | break; |
| 334 | } |
| 335 | #endif |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * C macro to do copying by index array, to rearrange samples |
| 340 | * within a frame. This is independent of src/dst sample type. |
| 341 | * Don't pass in any expressions for the macro arguments here. |
| 342 | */ |
| 343 | #define copy_frame_by_idx(dst, dst_channels, src, src_channels, idxary, count, zero) \ |
| 344 | { \ |
| 345 | unsigned i; \ |
| 346 | int index; \ |
| 347 | while (count--) { \ |
| 348 | for (i = 0; i < dst_channels; ++i) { \ |
| 349 | index = idxary[i]; \ |
| 350 | *dst++ = index < 0 ? zero : src[index]; \ |
| 351 | } \ |
| 352 | src += src_channels; \ |
| 353 | } \ |
| 354 | } |
| 355 | |
| 356 | void memcpy_by_index_array(void *dst, uint32_t dst_channels, |
| 357 | const void *src, uint32_t src_channels, |
| 358 | const int8_t *idxary, size_t sample_size, size_t count) |
| 359 | { |
| 360 | switch (sample_size) { |
| 361 | case 1: { |
| 362 | uint8_t *udst = (uint8_t*)dst; |
| 363 | const uint8_t *usrc = (const uint8_t*)src; |
| 364 | |
| 365 | copy_frame_by_idx(udst, dst_channels, usrc, src_channels, idxary, count, 0); |
| 366 | } break; |
| 367 | case 2: { |
| 368 | uint16_t *udst = (uint16_t*)dst; |
| 369 | const uint16_t *usrc = (const uint16_t*)src; |
| 370 | |
| 371 | copy_frame_by_idx(udst, dst_channels, usrc, src_channels, idxary, count, 0); |
| 372 | } break; |
| 373 | case 3: { /* could be slow. use a struct to represent 3 bytes of data. */ |
| 374 | uint8x3_t *udst = (uint8x3_t*)dst; |
| 375 | const uint8x3_t *usrc = (const uint8x3_t*)src; |
| 376 | static const uint8x3_t zero; |
| 377 | |
| 378 | copy_frame_by_idx(udst, dst_channels, usrc, src_channels, idxary, count, zero); |
| 379 | } break; |
| 380 | case 4: { |
| 381 | uint32_t *udst = (uint32_t*)dst; |
| 382 | const uint32_t *usrc = (const uint32_t*)src; |
| 383 | |
| 384 | copy_frame_by_idx(udst, dst_channels, usrc, src_channels, idxary, count, 0); |
| 385 | } break; |
| 386 | default: |
| 387 | abort(); /* illegal value */ |
| 388 | break; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | size_t memcpy_by_index_array_initialization(int8_t *idxary, size_t idxcount, |
| 393 | uint32_t dst_mask, uint32_t src_mask) |
| 394 | { |
| 395 | size_t n = 0; |
| 396 | int srcidx = 0; |
| 397 | uint32_t bit, ormask = src_mask | dst_mask; |
| 398 | |
| 399 | while (ormask && n < idxcount) { |
| 400 | bit = ormask & -ormask; /* get lowest bit */ |
| 401 | ormask ^= bit; /* remove lowest bit */ |
| 402 | if (src_mask & dst_mask & bit) { /* matching channel */ |
| 403 | idxary[n++] = srcidx++; |
| 404 | } else if (src_mask & bit) { /* source channel only */ |
| 405 | ++srcidx; |
| 406 | } else { /* destination channel only */ |
| 407 | idxary[n++] = -1; |
| 408 | } |
| 409 | } |
| 410 | return n + popcount(ormask & dst_mask); |
| 411 | } |