Jean-Marc Valin | ae0e2ca | 2012-11-07 19:57:33 -0500 | [diff] [blame^] | 1 | /* Copyright (c) 2011 Xiph.Org Foundation |
| 2 | Written by Jean-Marc Valin */ |
| 3 | /* |
| 4 | Redistribution and use in source and binary forms, with or without |
| 5 | modification, are permitted provided that the following conditions |
| 6 | are met: |
| 7 | |
| 8 | - Redistributions of source code must retain the above copyright |
| 9 | notice, this list of conditions and the following disclaimer. |
| 10 | |
| 11 | - Redistributions in binary form must reproduce the above copyright |
| 12 | notice, this list of conditions and the following disclaimer in the |
| 13 | documentation and/or other materials provided with the distribution. |
| 14 | |
| 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 18 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER |
| 19 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 20 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 22 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 24 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifdef HAVE_CONFIG_H |
| 29 | #include "config.h" |
| 30 | #endif |
| 31 | |
| 32 | #include "opus_multistream.h" |
| 33 | #include "opus.h" |
| 34 | #include "opus_private.h" |
| 35 | #include "stack_alloc.h" |
| 36 | #include <stdarg.h> |
| 37 | #include "float_cast.h" |
| 38 | #include "os_support.h" |
| 39 | |
| 40 | struct OpusMSEncoder { |
| 41 | ChannelLayout layout; |
| 42 | int bitrate; |
| 43 | /* Encoder states go here */ |
| 44 | }; |
| 45 | |
| 46 | #ifdef FIXED_POINT |
| 47 | #define opus_encode_native opus_encode |
| 48 | #else |
| 49 | #define opus_encode_native opus_encode_float |
| 50 | #endif |
| 51 | |
| 52 | static int validate_encoder_layout(const ChannelLayout *layout) |
| 53 | { |
| 54 | int s; |
| 55 | for (s=0;s<layout->nb_streams;s++) |
| 56 | { |
| 57 | if (s < layout->nb_coupled_streams) |
| 58 | { |
| 59 | if (get_left_channel(layout, s, -1)==-1) |
| 60 | return 0; |
| 61 | if (get_right_channel(layout, s, -1)==-1) |
| 62 | return 0; |
| 63 | } else { |
| 64 | if (get_mono_channel(layout, s, -1)==-1) |
| 65 | return 0; |
| 66 | } |
| 67 | } |
| 68 | return 1; |
| 69 | } |
| 70 | |
| 71 | |
| 72 | opus_int32 opus_multistream_encoder_get_size(int nb_streams, int nb_coupled_streams) |
| 73 | { |
| 74 | int coupled_size; |
| 75 | int mono_size; |
| 76 | |
| 77 | if(nb_streams<1||nb_coupled_streams>nb_streams||nb_coupled_streams<0)return 0; |
| 78 | coupled_size = opus_encoder_get_size(2); |
| 79 | mono_size = opus_encoder_get_size(1); |
| 80 | return align(sizeof(OpusMSEncoder)) |
| 81 | + nb_coupled_streams * align(coupled_size) |
| 82 | + (nb_streams-nb_coupled_streams) * align(mono_size); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | |
| 87 | int opus_multistream_encoder_init( |
| 88 | OpusMSEncoder *st, |
| 89 | opus_int32 Fs, |
| 90 | int channels, |
| 91 | int streams, |
| 92 | int coupled_streams, |
| 93 | const unsigned char *mapping, |
| 94 | int application |
| 95 | ) |
| 96 | { |
| 97 | int coupled_size; |
| 98 | int mono_size; |
| 99 | int i, ret; |
| 100 | char *ptr; |
| 101 | |
| 102 | if ((channels>255) || (channels<1) || (coupled_streams>streams) || |
| 103 | (coupled_streams+streams>255) || (streams<1) || (coupled_streams<0)) |
| 104 | return OPUS_BAD_ARG; |
| 105 | |
| 106 | st->layout.nb_channels = channels; |
| 107 | st->layout.nb_streams = streams; |
| 108 | st->layout.nb_coupled_streams = coupled_streams; |
| 109 | |
| 110 | for (i=0;i<st->layout.nb_channels;i++) |
| 111 | st->layout.mapping[i] = mapping[i]; |
| 112 | if (!validate_layout(&st->layout) || !validate_encoder_layout(&st->layout)) |
| 113 | return OPUS_BAD_ARG; |
| 114 | ptr = (char*)st + align(sizeof(OpusMSEncoder)); |
| 115 | coupled_size = opus_encoder_get_size(2); |
| 116 | mono_size = opus_encoder_get_size(1); |
| 117 | |
| 118 | for (i=0;i<st->layout.nb_coupled_streams;i++) |
| 119 | { |
| 120 | ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 2, application); |
| 121 | if(ret!=OPUS_OK)return ret; |
| 122 | ptr += align(coupled_size); |
| 123 | } |
| 124 | for (;i<st->layout.nb_streams;i++) |
| 125 | { |
| 126 | ret = opus_encoder_init((OpusEncoder*)ptr, Fs, 1, application); |
| 127 | if(ret!=OPUS_OK)return ret; |
| 128 | ptr += align(mono_size); |
| 129 | } |
| 130 | return OPUS_OK; |
| 131 | } |
| 132 | |
| 133 | OpusMSEncoder *opus_multistream_encoder_create( |
| 134 | opus_int32 Fs, |
| 135 | int channels, |
| 136 | int streams, |
| 137 | int coupled_streams, |
| 138 | const unsigned char *mapping, |
| 139 | int application, |
| 140 | int *error |
| 141 | ) |
| 142 | { |
| 143 | int ret; |
| 144 | OpusMSEncoder *st; |
| 145 | if ((channels>255) || (channels<1) || (coupled_streams>streams) || |
| 146 | (coupled_streams+streams>255) || (streams<1) || (coupled_streams<0)) |
| 147 | { |
| 148 | if (error) |
| 149 | *error = OPUS_BAD_ARG; |
| 150 | return NULL; |
| 151 | } |
| 152 | st = (OpusMSEncoder *)opus_alloc(opus_multistream_encoder_get_size(streams, coupled_streams)); |
| 153 | if (st==NULL) |
| 154 | { |
| 155 | if (error) |
| 156 | *error = OPUS_ALLOC_FAIL; |
| 157 | return NULL; |
| 158 | } |
| 159 | ret = opus_multistream_encoder_init(st, Fs, channels, streams, coupled_streams, mapping, application); |
| 160 | if (ret != OPUS_OK) |
| 161 | { |
| 162 | opus_free(st); |
| 163 | st = NULL; |
| 164 | } |
| 165 | if (error) |
| 166 | *error = ret; |
| 167 | return st; |
| 168 | } |
| 169 | |
| 170 | typedef void (*opus_copy_channel_in_func)( |
| 171 | opus_val16 *dst, |
| 172 | int dst_stride, |
| 173 | const void *src, |
| 174 | int src_stride, |
| 175 | int src_channel, |
| 176 | int frame_size |
| 177 | ); |
| 178 | |
| 179 | /* Max size in case the encoder decides to return three frames */ |
| 180 | #define MS_FRAME_TMP (3*1275+7) |
| 181 | static int opus_multistream_encode_native |
| 182 | ( |
| 183 | OpusMSEncoder *st, |
| 184 | opus_copy_channel_in_func copy_channel_in, |
| 185 | const void *pcm, |
| 186 | int frame_size, |
| 187 | unsigned char *data, |
| 188 | opus_int32 max_data_bytes |
| 189 | ) |
| 190 | { |
| 191 | opus_int32 Fs; |
| 192 | int coupled_size; |
| 193 | int mono_size; |
| 194 | int s; |
| 195 | char *ptr; |
| 196 | int tot_size; |
| 197 | VARDECL(opus_val16, buf); |
| 198 | unsigned char tmp_data[MS_FRAME_TMP]; |
| 199 | OpusRepacketizer rp; |
| 200 | ALLOC_STACK; |
| 201 | |
| 202 | ptr = (char*)st + align(sizeof(OpusMSEncoder)); |
| 203 | opus_encoder_ctl((OpusEncoder*)ptr, OPUS_GET_SAMPLE_RATE(&Fs)); |
| 204 | /* Validate frame_size before using it to allocate stack space. |
| 205 | This mirrors the checks in opus_encode[_float](). */ |
| 206 | if (400*frame_size != Fs && 200*frame_size != Fs && |
| 207 | 100*frame_size != Fs && 50*frame_size != Fs && |
| 208 | 25*frame_size != Fs && 50*frame_size != 3*Fs) |
| 209 | { |
| 210 | RESTORE_STACK; |
| 211 | return OPUS_BAD_ARG; |
| 212 | } |
| 213 | ALLOC(buf, 2*frame_size, opus_val16); |
| 214 | coupled_size = opus_encoder_get_size(2); |
| 215 | mono_size = opus_encoder_get_size(1); |
| 216 | |
| 217 | if (max_data_bytes < 4*st->layout.nb_streams-1) |
| 218 | { |
| 219 | RESTORE_STACK; |
| 220 | return OPUS_BUFFER_TOO_SMALL; |
| 221 | } |
| 222 | /* Counting ToC */ |
| 223 | tot_size = 0; |
| 224 | for (s=0;s<st->layout.nb_streams;s++) |
| 225 | { |
| 226 | OpusEncoder *enc; |
| 227 | int len; |
| 228 | int curr_max; |
| 229 | |
| 230 | opus_repacketizer_init(&rp); |
| 231 | enc = (OpusEncoder*)ptr; |
| 232 | if (s < st->layout.nb_coupled_streams) |
| 233 | { |
| 234 | int left, right; |
| 235 | left = get_left_channel(&st->layout, s, -1); |
| 236 | right = get_right_channel(&st->layout, s, -1); |
| 237 | (*copy_channel_in)(buf, 2, |
| 238 | pcm, st->layout.nb_channels, left, frame_size); |
| 239 | (*copy_channel_in)(buf+1, 2, |
| 240 | pcm, st->layout.nb_channels, right, frame_size); |
| 241 | ptr += align(coupled_size); |
| 242 | } else { |
| 243 | int chan = get_mono_channel(&st->layout, s, -1); |
| 244 | (*copy_channel_in)(buf, 1, |
| 245 | pcm, st->layout.nb_channels, chan, frame_size); |
| 246 | ptr += align(mono_size); |
| 247 | } |
| 248 | /* number of bytes left (+Toc) */ |
| 249 | curr_max = max_data_bytes - tot_size; |
| 250 | /* Reserve three bytes for the last stream and four for the others */ |
| 251 | curr_max -= IMAX(0,4*(st->layout.nb_streams-s-1)-1); |
| 252 | curr_max = IMIN(curr_max,MS_FRAME_TMP); |
| 253 | len = opus_encode_native(enc, buf, frame_size, tmp_data, curr_max); |
| 254 | if (len<0) |
| 255 | { |
| 256 | RESTORE_STACK; |
| 257 | return len; |
| 258 | } |
| 259 | /* We need to use the repacketizer to add the self-delimiting lengths |
| 260 | while taking into account the fact that the encoder can now return |
| 261 | more than one frame at a time (e.g. 60 ms CELT-only) */ |
| 262 | opus_repacketizer_cat(&rp, tmp_data, len); |
| 263 | len = opus_repacketizer_out_range_impl(&rp, 0, opus_repacketizer_get_nb_frames(&rp), data, max_data_bytes-tot_size, s != st->layout.nb_streams-1); |
| 264 | data += len; |
| 265 | tot_size += len; |
| 266 | } |
| 267 | RESTORE_STACK; |
| 268 | return tot_size; |
| 269 | |
| 270 | } |
| 271 | |
| 272 | #if !defined(DISABLE_FLOAT_API) |
| 273 | static void opus_copy_channel_in_float( |
| 274 | opus_val16 *dst, |
| 275 | int dst_stride, |
| 276 | const void *src, |
| 277 | int src_stride, |
| 278 | int src_channel, |
| 279 | int frame_size |
| 280 | ) |
| 281 | { |
| 282 | const float *float_src; |
| 283 | int i; |
| 284 | float_src = (const float *)src; |
| 285 | for (i=0;i<frame_size;i++) |
| 286 | #if defined(FIXED_POINT) |
| 287 | dst[i*dst_stride] = FLOAT2INT16(float_src[i*src_stride+src_channel]); |
| 288 | #else |
| 289 | dst[i*dst_stride] = float_src[i*src_stride+src_channel]; |
| 290 | #endif |
| 291 | } |
| 292 | #endif |
| 293 | |
| 294 | static void opus_copy_channel_in_short( |
| 295 | opus_val16 *dst, |
| 296 | int dst_stride, |
| 297 | const void *src, |
| 298 | int src_stride, |
| 299 | int src_channel, |
| 300 | int frame_size |
| 301 | ) |
| 302 | { |
| 303 | const opus_int16 *short_src; |
| 304 | int i; |
| 305 | short_src = (const opus_int16 *)src; |
| 306 | for (i=0;i<frame_size;i++) |
| 307 | #if defined(FIXED_POINT) |
| 308 | dst[i*dst_stride] = short_src[i*src_stride+src_channel]; |
| 309 | #else |
| 310 | dst[i*dst_stride] = (1/32768.f)*short_src[i*src_stride+src_channel]; |
| 311 | #endif |
| 312 | } |
| 313 | |
| 314 | #ifdef FIXED_POINT |
| 315 | int opus_multistream_encode( |
| 316 | OpusMSEncoder *st, |
| 317 | const opus_val16 *pcm, |
| 318 | int frame_size, |
| 319 | unsigned char *data, |
| 320 | opus_int32 max_data_bytes |
| 321 | ) |
| 322 | { |
| 323 | return opus_multistream_encode_native(st, opus_copy_channel_in_short, |
| 324 | pcm, frame_size, data, max_data_bytes); |
| 325 | } |
| 326 | |
| 327 | #ifndef DISABLE_FLOAT_API |
| 328 | int opus_multistream_encode_float( |
| 329 | OpusMSEncoder *st, |
| 330 | const float *pcm, |
| 331 | int frame_size, |
| 332 | unsigned char *data, |
| 333 | opus_int32 max_data_bytes |
| 334 | ) |
| 335 | { |
| 336 | return opus_multistream_encode_native(st, opus_copy_channel_in_float, |
| 337 | pcm, frame_size, data, max_data_bytes); |
| 338 | } |
| 339 | #endif |
| 340 | |
| 341 | #else |
| 342 | |
| 343 | int opus_multistream_encode_float |
| 344 | ( |
| 345 | OpusMSEncoder *st, |
| 346 | const opus_val16 *pcm, |
| 347 | int frame_size, |
| 348 | unsigned char *data, |
| 349 | opus_int32 max_data_bytes |
| 350 | ) |
| 351 | { |
| 352 | return opus_multistream_encode_native(st, opus_copy_channel_in_float, |
| 353 | pcm, frame_size, data, max_data_bytes); |
| 354 | } |
| 355 | |
| 356 | int opus_multistream_encode( |
| 357 | OpusMSEncoder *st, |
| 358 | const opus_int16 *pcm, |
| 359 | int frame_size, |
| 360 | unsigned char *data, |
| 361 | opus_int32 max_data_bytes |
| 362 | ) |
| 363 | { |
| 364 | return opus_multistream_encode_native(st, opus_copy_channel_in_short, |
| 365 | pcm, frame_size, data, max_data_bytes); |
| 366 | } |
| 367 | #endif |
| 368 | |
| 369 | int opus_multistream_encoder_ctl(OpusMSEncoder *st, int request, ...) |
| 370 | { |
| 371 | va_list ap; |
| 372 | int coupled_size, mono_size; |
| 373 | char *ptr; |
| 374 | int ret = OPUS_OK; |
| 375 | |
| 376 | va_start(ap, request); |
| 377 | |
| 378 | coupled_size = opus_encoder_get_size(2); |
| 379 | mono_size = opus_encoder_get_size(1); |
| 380 | ptr = (char*)st + align(sizeof(OpusMSEncoder)); |
| 381 | switch (request) |
| 382 | { |
| 383 | case OPUS_SET_BITRATE_REQUEST: |
| 384 | { |
| 385 | int chan, s; |
| 386 | opus_int32 value = va_arg(ap, opus_int32); |
| 387 | chan = st->layout.nb_streams + st->layout.nb_coupled_streams; |
| 388 | value /= chan; |
| 389 | for (s=0;s<st->layout.nb_streams;s++) |
| 390 | { |
| 391 | OpusEncoder *enc; |
| 392 | enc = (OpusEncoder*)ptr; |
| 393 | if (s < st->layout.nb_coupled_streams) |
| 394 | ptr += align(coupled_size); |
| 395 | else |
| 396 | ptr += align(mono_size); |
| 397 | opus_encoder_ctl(enc, request, value * (s < st->layout.nb_coupled_streams ? 2 : 1)); |
| 398 | } |
| 399 | } |
| 400 | break; |
| 401 | case OPUS_GET_BITRATE_REQUEST: |
| 402 | { |
| 403 | int s; |
| 404 | opus_int32 *value = va_arg(ap, opus_int32*); |
| 405 | *value = 0; |
| 406 | for (s=0;s<st->layout.nb_streams;s++) |
| 407 | { |
| 408 | opus_int32 rate; |
| 409 | OpusEncoder *enc; |
| 410 | enc = (OpusEncoder*)ptr; |
| 411 | if (s < st->layout.nb_coupled_streams) |
| 412 | ptr += align(coupled_size); |
| 413 | else |
| 414 | ptr += align(mono_size); |
| 415 | opus_encoder_ctl(enc, request, &rate); |
| 416 | *value += rate; |
| 417 | } |
| 418 | } |
| 419 | break; |
| 420 | case OPUS_GET_LSB_DEPTH_REQUEST: |
| 421 | case OPUS_GET_VBR_REQUEST: |
| 422 | case OPUS_GET_APPLICATION_REQUEST: |
| 423 | case OPUS_GET_BANDWIDTH_REQUEST: |
| 424 | case OPUS_GET_COMPLEXITY_REQUEST: |
| 425 | case OPUS_GET_PACKET_LOSS_PERC_REQUEST: |
| 426 | case OPUS_GET_DTX_REQUEST: |
| 427 | case OPUS_GET_VOICE_RATIO_REQUEST: |
| 428 | case OPUS_GET_VBR_CONSTRAINT_REQUEST: |
| 429 | case OPUS_GET_SIGNAL_REQUEST: |
| 430 | case OPUS_GET_LOOKAHEAD_REQUEST: |
| 431 | case OPUS_GET_SAMPLE_RATE_REQUEST: |
| 432 | case OPUS_GET_INBAND_FEC_REQUEST: |
| 433 | case OPUS_GET_FORCE_CHANNELS_REQUEST: |
| 434 | { |
| 435 | OpusEncoder *enc; |
| 436 | /* For int32* GET params, just query the first stream */ |
| 437 | opus_int32 *value = va_arg(ap, opus_int32*); |
| 438 | enc = (OpusEncoder*)ptr; |
| 439 | ret = opus_encoder_ctl(enc, request, value); |
| 440 | } |
| 441 | break; |
| 442 | case OPUS_GET_FINAL_RANGE_REQUEST: |
| 443 | { |
| 444 | int s; |
| 445 | opus_uint32 *value = va_arg(ap, opus_uint32*); |
| 446 | opus_uint32 tmp; |
| 447 | *value=0; |
| 448 | for (s=0;s<st->layout.nb_streams;s++) |
| 449 | { |
| 450 | OpusEncoder *enc; |
| 451 | enc = (OpusEncoder*)ptr; |
| 452 | if (s < st->layout.nb_coupled_streams) |
| 453 | ptr += align(coupled_size); |
| 454 | else |
| 455 | ptr += align(mono_size); |
| 456 | ret = opus_encoder_ctl(enc, request, &tmp); |
| 457 | if (ret != OPUS_OK) break; |
| 458 | *value ^= tmp; |
| 459 | } |
| 460 | } |
| 461 | break; |
| 462 | case OPUS_SET_LSB_DEPTH_REQUEST: |
| 463 | case OPUS_SET_COMPLEXITY_REQUEST: |
| 464 | case OPUS_SET_VBR_REQUEST: |
| 465 | case OPUS_SET_VBR_CONSTRAINT_REQUEST: |
| 466 | case OPUS_SET_BANDWIDTH_REQUEST: |
| 467 | case OPUS_SET_SIGNAL_REQUEST: |
| 468 | case OPUS_SET_APPLICATION_REQUEST: |
| 469 | case OPUS_SET_INBAND_FEC_REQUEST: |
| 470 | case OPUS_SET_PACKET_LOSS_PERC_REQUEST: |
| 471 | case OPUS_SET_DTX_REQUEST: |
| 472 | case OPUS_SET_FORCE_MODE_REQUEST: |
| 473 | case OPUS_SET_FORCE_CHANNELS_REQUEST: |
| 474 | { |
| 475 | int s; |
| 476 | /* This works for int32 params */ |
| 477 | opus_int32 value = va_arg(ap, opus_int32); |
| 478 | for (s=0;s<st->layout.nb_streams;s++) |
| 479 | { |
| 480 | OpusEncoder *enc; |
| 481 | |
| 482 | enc = (OpusEncoder*)ptr; |
| 483 | if (s < st->layout.nb_coupled_streams) |
| 484 | ptr += align(coupled_size); |
| 485 | else |
| 486 | ptr += align(mono_size); |
| 487 | ret = opus_encoder_ctl(enc, request, value); |
| 488 | if (ret != OPUS_OK) |
| 489 | break; |
| 490 | } |
| 491 | } |
| 492 | break; |
| 493 | case OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST: |
| 494 | { |
| 495 | int s; |
| 496 | opus_int32 stream_id; |
| 497 | OpusEncoder **value; |
| 498 | stream_id = va_arg(ap, opus_int32); |
| 499 | if (stream_id<0 || stream_id >= st->layout.nb_streams) |
| 500 | ret = OPUS_BAD_ARG; |
| 501 | value = va_arg(ap, OpusEncoder**); |
| 502 | for (s=0;s<stream_id;s++) |
| 503 | { |
| 504 | if (s < st->layout.nb_coupled_streams) |
| 505 | ptr += align(coupled_size); |
| 506 | else |
| 507 | ptr += align(mono_size); |
| 508 | } |
| 509 | *value = (OpusEncoder*)ptr; |
| 510 | } |
| 511 | break; |
| 512 | default: |
| 513 | ret = OPUS_UNIMPLEMENTED; |
| 514 | break; |
| 515 | } |
| 516 | |
| 517 | va_end(ap); |
| 518 | return ret; |
| 519 | } |
| 520 | |
| 521 | void opus_multistream_encoder_destroy(OpusMSEncoder *st) |
| 522 | { |
| 523 | opus_free(st); |
| 524 | } |
| 525 | |
| 526 | |