audio/gstsbcenc.c

   1 /*
   2  *
   3  *  BlueZ - Bluetooth protocol stack for Linux
   4  *
   5  *  Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This library is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU Lesser General Public
  10  *  License as published by the Free Software Foundation; either
  11  *  version 2.1 of the License, or (at your option) any later version.
  12  *
  13  *  This library is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  Lesser General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU Lesser General Public
  19  *  License along with this library; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <string.h>
  29
  30 #include "gstpragma.h"
  31 #include "gstsbcutil.h"
  32 #include "gstsbcenc.h"
  33
  34 #define SBC_ENC_DEFAULT_MODE SBC_MODE_AUTO
  35 #define SBC_ENC_DEFAULT_BLOCKS 0
  36 #define SBC_ENC_DEFAULT_SUB_BANDS 0
  37 #define SBC_ENC_DEFAULT_ALLOCATION SBC_AM_AUTO
  38 #define SBC_ENC_DEFAULT_RATE 0
  39 #define SBC_ENC_DEFAULT_CHANNELS 0
  40
  41 #define SBC_ENC_BITPOOL_AUTO 1
  42 #define SBC_ENC_BITPOOL_MIN 2
  43 #define SBC_ENC_BITPOOL_MIN_STR "2"
  44 #define SBC_ENC_BITPOOL_MAX 64
  45 #define SBC_ENC_BITPOOL_MAX_STR "64"
  46
  47 GST_DEBUG_CATEGORY_STATIC(sbc_enc_debug);
  48 #define GST_CAT_DEFAULT sbc_enc_debug
  49
  50 #define GST_TYPE_SBC_MODE (gst_sbc_mode_get_type())
  51
  52 static GType gst_sbc_mode_get_type(void)
  53 {
  54         static GType sbc_mode_type = 0;
  55         static GEnumValue sbc_modes[] = {
  56                 {  SBC_MODE_MONO,               "Mono",         "mono"  },
  57                 {  SBC_MODE_DUAL_CHANNEL,       "Dual Channel", "dual"  },
  58                 {  SBC_MODE_STEREO,             "Stereo",       "stereo"},
  59                 {  SBC_MODE_JOINT_STEREO,       "Joint Stereo", "joint" },
  60                 {  SBC_MODE_AUTO,               "Auto",         "auto"  },
  61                 { -1, NULL, NULL}
  62         };
  63
  64         if (!sbc_mode_type)
  65                 sbc_mode_type = g_enum_register_static("GstSbcMode", sbc_modes);
  66
  67         return sbc_mode_type;
  68 }
  69
  70 #define GST_TYPE_SBC_ALLOCATION (gst_sbc_allocation_get_type())
  71
  72 static GType gst_sbc_allocation_get_type(void)
  73 {
  74         static GType sbc_allocation_type = 0;
  75         static GEnumValue sbc_allocations[] = {
  76                 { SBC_AM_LOUDNESS,      "Loudness",     "loudness" },
  77                 { SBC_AM_SNR,           "SNR",          "snr" },
  78                 { SBC_AM_AUTO,          "Auto",         "auto" },
  79                 { -1, NULL, NULL}
  80         };
  81
  82         if (!sbc_allocation_type)
  83                 sbc_allocation_type = g_enum_register_static(
  84                                 "GstSbcAllocation", sbc_allocations);
  85
  86         return sbc_allocation_type;
  87 }
  88
  89 #define GST_TYPE_SBC_BLOCKS (gst_sbc_blocks_get_type())
  90
  91 static GType gst_sbc_blocks_get_type(void)
  92 {
  93         static GType sbc_blocks_type = 0;
  94         static GEnumValue sbc_blocks[] = {
  95                 { 0,    "Auto",         "auto" },
  96                 { 4,    "4",            "4" },
  97                 { 8,    "8",            "8" },
  98                 { 12,   "12",           "12" },
  99                 { 16,   "16",           "16" },
 100                 { -1, NULL, NULL}
 101         };
 102
 103         if (!sbc_blocks_type)
 104                 sbc_blocks_type = g_enum_register_static(
 105                                 "GstSbcBlocks", sbc_blocks);
 106
 107         return sbc_blocks_type;
 108 }
 109
 110 #define GST_TYPE_SBC_SUBBANDS (gst_sbc_subbands_get_type())
 111
 112 static GType gst_sbc_subbands_get_type(void)
 113 {
 114         static GType sbc_subbands_type = 0;
 115         static GEnumValue sbc_subbands[] = {
 116                 { 0,    "Auto",         "auto" },
 117                 { 4,    "4 subbands",   "4" },
 118                 { 8,    "8 subbands",   "8" },
 119                 { -1, NULL, NULL}
 120         };
 121
 122         if (!sbc_subbands_type)
 123                 sbc_subbands_type = g_enum_register_static(
 124                                 "GstSbcSubbands", sbc_subbands);
 125
 126         return sbc_subbands_type;
 127 }
 128
 129 enum {
 130         PROP_0,
 131         PROP_MODE,
 132         PROP_ALLOCATION,
 133         PROP_BLOCKS,
 134         PROP_SUBBANDS,
 135         PROP_BITPOOL
 136 };
 137
 138 GST_BOILERPLATE(GstSbcEnc, gst_sbc_enc, GstElement, GST_TYPE_ELEMENT);
 139
 140 static const GstElementDetails sbc_enc_details =
 141         GST_ELEMENT_DETAILS("Bluetooth SBC encoder",
 142                                 "Codec/Encoder/Audio",
 143                                 "Encode a SBC audio stream",
 144                                 "Marcel Holtmann <marcel@holtmann.org>");
 145
 146 static GstStaticPadTemplate sbc_enc_sink_factory =
 147         GST_STATIC_PAD_TEMPLATE("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
 148                 GST_STATIC_CAPS("audio/x-raw-int, "
 149                                 "rate = (int) { 16000, 32000, 44100, 48000 }, "
 150                                 "channels = (int) [ 1, 2 ], "
 151                                 "endianness = (int) BYTE_ORDER, "
 152                                 "signed = (boolean) true, "
 153                                 "width = (int) 16, "
 154                                 "depth = (int) 16"));
 155
 156 static GstStaticPadTemplate sbc_enc_src_factory =
 157         GST_STATIC_PAD_TEMPLATE("src", GST_PAD_SRC, GST_PAD_ALWAYS,
 158                 GST_STATIC_CAPS("audio/x-sbc, "
 159                                 "rate = (int) { 16000, 32000, 44100, 48000 }, "
 160                                 "channels = (int) [ 1, 2 ], "
 161                                 "mode = (string) { \"mono\", \"dual\", \"stereo\", \"joint\" }, "
 162                                 "blocks = (int) { 4, 8, 12, 16 }, "
 163                                 "subbands = (int) { 4, 8 }, "
 164                                 "allocation = (string) { \"snr\", \"loudness\" }, "
 165                                 "bitpool = (int) [ " SBC_ENC_BITPOOL_MIN_STR
 166                                 ", " SBC_ENC_BITPOOL_MAX_STR " ]"));
 167
 168 gboolean gst_sbc_enc_fill_sbc_params(GstSbcEnc *enc, GstCaps *caps);
 169
 170 static GstCaps *sbc_enc_generate_srcpad_caps(GstSbcEnc *enc)
 171 {
 172         GstCaps *src_caps;
 173         GstStructure *structure;
 174         GEnumValue *enum_value;
 175         GEnumClass *enum_class;
 176         GValue *value;
 177
 178         src_caps = gst_caps_copy(gst_pad_get_pad_template_caps(enc->srcpad));
 179         structure = gst_caps_get_structure(src_caps, 0);
 180
 181         value = g_new0(GValue, 1);
 182
 183         if (enc->rate != 0)
 184                 gst_sbc_util_set_structure_int_param(structure, "rate",
 185                         enc->rate, value);
 186
 187         if (enc->channels != 0)
 188                 gst_sbc_util_set_structure_int_param(structure, "channels",
 189                         enc->channels, value);
 190
 191         if (enc->subbands != 0)
 192                 gst_sbc_util_set_structure_int_param(structure, "subbands",
 193                         enc->subbands, value);
 194
 195         if (enc->blocks != 0)
 196                 gst_sbc_util_set_structure_int_param(structure, "blocks",
 197                         enc->blocks, value);
 198
 199         if (enc->bitpool != SBC_ENC_BITPOOL_AUTO)
 200                 gst_sbc_util_set_structure_int_param(structure, "bitpool",
 201                         enc->bitpool, value);
 202
 203         if (enc->mode != SBC_ENC_DEFAULT_MODE) {
 204                 enum_class = g_type_class_ref(GST_TYPE_SBC_MODE);
 205                 enum_value = g_enum_get_value(enum_class, enc->mode);
 206                 gst_sbc_util_set_structure_string_param(structure, "mode",
 207                         enum_value->value_nick, value);
 208                 g_type_class_unref(enum_class);
 209         }
 210
 211         if (enc->allocation != SBC_AM_AUTO) {
 212                 enum_class = g_type_class_ref(GST_TYPE_SBC_ALLOCATION);
 213                 enum_value = g_enum_get_value(enum_class, enc->allocation);
 214                 gst_sbc_util_set_structure_string_param(structure, "allocation",
 215                         enum_value->value_nick, value);
 216                 g_type_class_unref(enum_class);
 217         }
 218
 219         g_free(value);
 220
 221         return src_caps;
 222 }
 223
 224 static GstCaps *sbc_enc_src_getcaps(GstPad *pad)
 225 {
 226         GstSbcEnc *enc;
 227
 228         enc = GST_SBC_ENC(GST_PAD_PARENT(pad));
 229
 230         return sbc_enc_generate_srcpad_caps(enc);
 231 }
 232
 233 static gboolean sbc_enc_src_setcaps(GstPad *pad, GstCaps *caps)
 234 {
 235         GstSbcEnc *enc = GST_SBC_ENC(GST_PAD_PARENT(pad));
 236
 237         GST_LOG_OBJECT(enc, "setting srcpad caps");
 238
 239         return gst_sbc_enc_fill_sbc_params(enc, caps);
 240 }
 241
 242 static GstCaps *sbc_enc_src_caps_fixate(GstSbcEnc *enc, GstCaps *caps)
 243 {
 244         gchar *error_message = NULL;
 245         GstCaps *result;
 246
 247         result = gst_sbc_util_caps_fixate(caps, &error_message);
 248
 249         if (!result) {
 250                 GST_WARNING_OBJECT(enc, "Invalid input caps caused parsing "
 251                                 "error: %s", error_message);
 252                 g_free(error_message);
 253                 return NULL;
 254         }
 255
 256         return result;
 257 }
 258
 259 static GstCaps *sbc_enc_get_fixed_srcpad_caps(GstSbcEnc *enc)
 260 {
 261         GstCaps *caps;
 262         gboolean res = TRUE;
 263         GstCaps *result_caps = NULL;
 264
 265         caps = gst_pad_get_allowed_caps(enc->srcpad);
 266         if (caps == NULL)
 267                 caps = sbc_enc_src_getcaps(enc->srcpad);
 268
 269         if (caps == GST_CAPS_NONE || gst_caps_is_empty(caps)) {
 270                 res = FALSE;
 271                 goto done;
 272         }
 273
 274         result_caps = sbc_enc_src_caps_fixate(enc, caps);
 275
 276 done:
 277         gst_caps_unref(caps);
 278
 279         if (!res)
 280                 return NULL;
 281
 282         return result_caps;
 283 }
 284
 285 static gboolean sbc_enc_sink_setcaps(GstPad *pad, GstCaps *caps)
 286 {
 287         GstSbcEnc *enc;
 288         GstStructure *structure;
 289         GstCaps *src_caps;
 290         gint rate, channels;
 291         gboolean res;
 292
 293         enc = GST_SBC_ENC(GST_PAD_PARENT(pad));
 294         structure = gst_caps_get_structure(caps, 0);
 295
 296         if (!gst_structure_get_int(structure, "rate", &rate))
 297                 return FALSE;
 298         if (!gst_structure_get_int(structure, "channels", &channels))
 299                 return FALSE;
 300
 301         enc->rate = rate;
 302         enc->channels = channels;
 303
 304         src_caps = sbc_enc_get_fixed_srcpad_caps(enc);
 305         if (!src_caps)
 306                 return FALSE;
 307         res = gst_pad_set_caps(enc->srcpad, src_caps);
 308         gst_caps_unref(src_caps);
 309
 310         return res;
 311 }
 312
 313 gboolean gst_sbc_enc_fill_sbc_params(GstSbcEnc *enc, GstCaps *caps)
 314 {
 315         if (!gst_caps_is_fixed(caps)) {
 316                 GST_DEBUG_OBJECT(enc, "didn't receive fixed caps, "
 317                                 "returning false");
 318                 return FALSE;
 319         }
 320
 321         if (!gst_sbc_util_fill_sbc_params(&enc->sbc, caps))
 322                 return FALSE;
 323
 324         if (enc->rate != 0 && gst_sbc_parse_rate_from_sbc(enc->sbc.frequency)
 325                                  != enc->rate)
 326                 goto fail;
 327
 328         if (enc->channels != 0 && gst_sbc_get_channel_number(enc->sbc.mode)
 329                                 != enc->channels)
 330                 goto fail;
 331
 332         if (enc->blocks != 0 && gst_sbc_parse_blocks_from_sbc(enc->sbc.blocks)
 333                                  != enc->blocks)
 334                 goto fail;
 335
 336         if (enc->subbands != 0 && gst_sbc_parse_subbands_from_sbc(
 337                                 enc->sbc.subbands) != enc->subbands)
 338                 goto fail;
 339
 340         if (enc->mode != SBC_ENC_DEFAULT_MODE && enc->sbc.mode != enc->mode)
 341                 goto fail;
 342
 343         if (enc->allocation != SBC_AM_AUTO &&
 344                                 enc->sbc.allocation != enc->allocation)
 345                 goto fail;
 346
 347         if (enc->bitpool != SBC_ENC_BITPOOL_AUTO &&
 348                                 enc->sbc.bitpool != enc->bitpool)
 349                 goto fail;
 350
 351         enc->codesize = sbc_get_codesize(&enc->sbc);
 352         enc->frame_length = sbc_get_frame_length(&enc->sbc);
 353         enc->frame_duration = sbc_get_frame_duration(&enc->sbc);
 354
 355         GST_DEBUG_OBJECT(enc, "codesize: %d, frame_length: %d, frame_duration:"
 356                         " %d", enc->codesize, enc->frame_length,
 357                         enc->frame_duration);
 358
 359         return TRUE;
 360
 361 fail:
 362         memset(&enc->sbc, 0, sizeof(sbc_t));
 363         return FALSE;
 364 }
 365
 366 static GstFlowReturn sbc_enc_chain(GstPad *pad, GstBuffer *buffer)
 367 {
 368         GstSbcEnc *enc = GST_SBC_ENC(gst_pad_get_parent(pad));
 369         GstAdapter *adapter = enc->adapter;
 370         GstFlowReturn res = GST_FLOW_OK;
 371
 372         gst_adapter_push(adapter, buffer);
 373
 374         while (gst_adapter_available(adapter) >= enc->codesize &&
 375                                                         res == GST_FLOW_OK) {
 376                 GstBuffer *output;
 377                 GstCaps *caps;
 378                 const guint8 *data;
 379                 gint consumed;
 380
 381                 caps = GST_PAD_CAPS(enc->srcpad);
 382                 res = gst_pad_alloc_buffer_and_set_caps(enc->srcpad,
 383                                                 GST_BUFFER_OFFSET_NONE,
 384                                                 enc->frame_length, caps,
 385                                                 &output);
 386                 if (res != GST_FLOW_OK)
 387                         goto done;
 388
 389                 data = gst_adapter_peek(adapter, enc->codesize);
 390
 391                 consumed = sbc_encode(&enc->sbc, (gpointer) data,
 392                                         enc->codesize,
 393                                         GST_BUFFER_DATA(output),
 394                                         GST_BUFFER_SIZE(output), NULL);
 395                 if (consumed <= 0) {
 396                         GST_DEBUG_OBJECT(enc, "comsumed < 0, codesize: %d",
 397                                         enc->codesize);
 398                         break;
 399                 }
 400                 gst_adapter_flush(adapter, consumed);
 401
 402                 GST_BUFFER_TIMESTAMP(output) = GST_BUFFER_TIMESTAMP(buffer);
 403                 /* we have only 1 frame */
 404                 GST_BUFFER_DURATION(output) = enc->frame_duration;
 405
 406                 res = gst_pad_push(enc->srcpad, output);
 407
 408                 if (res != GST_FLOW_OK)
 409                         goto done;
 410         }
 411
 412 done:
 413         gst_object_unref(enc);
 414
 415         return res;
 416 }
 417
 418 static GstStateChangeReturn sbc_enc_change_state(GstElement *element,
 419                                                 GstStateChange transition)
 420 {
 421         GstSbcEnc *enc = GST_SBC_ENC(element);
 422
 423         switch (transition) {
 424         case GST_STATE_CHANGE_READY_TO_PAUSED:
 425                 GST_DEBUG("Setup subband codec");
 426                 sbc_init(&enc->sbc, 0);
 427                 break;
 428
 429         case GST_STATE_CHANGE_PAUSED_TO_READY:
 430                 GST_DEBUG("Finish subband codec");
 431                 sbc_finish(&enc->sbc);
 432                 break;
 433
 434         default:
 435                 break;
 436         }
 437
 438         return parent_class->change_state(element, transition);
 439 }
 440
 441 static void gst_sbc_enc_dispose(GObject *object)
 442 {
 443         GstSbcEnc *enc = GST_SBC_ENC(object);
 444
 445         if (enc->adapter != NULL)
 446                 g_object_unref(G_OBJECT(enc->adapter));
 447
 448         enc->adapter = NULL;
 449 }
 450
 451 static void gst_sbc_enc_base_init(gpointer g_class)
 452 {
 453         GstElementClass *element_class = GST_ELEMENT_CLASS(g_class);
 454
 455         gst_element_class_add_pad_template(element_class,
 456                 gst_static_pad_template_get(&sbc_enc_sink_factory));
 457
 458         gst_element_class_add_pad_template(element_class,
 459                 gst_static_pad_template_get(&sbc_enc_src_factory));
 460
 461         gst_element_class_set_details(element_class, &sbc_enc_details);
 462 }
 463
 464 static void gst_sbc_enc_set_property(GObject *object, guint prop_id,
 465                                         const GValue *value, GParamSpec *pspec)
 466 {
 467         GstSbcEnc *enc = GST_SBC_ENC(object);
 468
 469         /* changes to those properties will only happen on the next caps
 470          * negotiation */
 471
 472         switch (prop_id) {
 473         case PROP_MODE:
 474                 enc->mode = g_value_get_enum(value);
 475                 break;
 476         case PROP_ALLOCATION:
 477                 enc->allocation = g_value_get_enum(value);
 478                 break;
 479         case PROP_BLOCKS:
 480                 enc->blocks = g_value_get_enum(value);
 481                 break;
 482         case PROP_SUBBANDS:
 483                 enc->subbands = g_value_get_enum(value);
 484                 break;
 485         case PROP_BITPOOL:
 486                 enc->bitpool = g_value_get_int(value);
 487                 break;
 488         default:
 489                 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 490                 break;
 491         }
 492 }
 493
 494 static void gst_sbc_enc_get_property(GObject *object, guint prop_id,
 495                                         GValue *value, GParamSpec *pspec)
 496 {
 497         GstSbcEnc *enc = GST_SBC_ENC(object);
 498
 499         switch (prop_id) {
 500         case PROP_MODE:
 501                 g_value_set_enum(value, enc->mode);
 502                 break;
 503         case PROP_ALLOCATION:
 504                 g_value_set_enum(value, enc->allocation);
 505                 break;
 506         case PROP_BLOCKS:
 507                 g_value_set_enum(value, enc->blocks);
 508                 break;
 509         case PROP_SUBBANDS:
 510                 g_value_set_enum(value, enc->subbands);
 511                 break;
 512         case PROP_BITPOOL:
 513                 g_value_set_int(value, enc->bitpool);
 514                 break;
 515         default:
 516                 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 517                 break;
 518         }
 519 }
 520
 521 static void gst_sbc_enc_class_init(GstSbcEncClass *klass)
 522 {
 523         GObjectClass *object_class = G_OBJECT_CLASS(klass);
 524         GstElementClass *element_class = GST_ELEMENT_CLASS(klass);
 525
 526         parent_class = g_type_class_peek_parent(klass);
 527
 528         object_class->set_property = GST_DEBUG_FUNCPTR(gst_sbc_enc_set_property);
 529         object_class->get_property = GST_DEBUG_FUNCPTR(gst_sbc_enc_get_property);
 530         object_class->dispose = GST_DEBUG_FUNCPTR(gst_sbc_enc_dispose);
 531
 532         element_class->change_state = GST_DEBUG_FUNCPTR(sbc_enc_change_state);
 533
 534         g_object_class_install_property(object_class, PROP_MODE,
 535                         g_param_spec_enum("mode", "Mode",
 536                                 "Encoding mode", GST_TYPE_SBC_MODE,
 537                                 SBC_ENC_DEFAULT_MODE, G_PARAM_READWRITE));
 538
 539         g_object_class_install_property(object_class, PROP_ALLOCATION,
 540                         g_param_spec_enum("allocation", "Allocation",
 541                                 "Allocation method", GST_TYPE_SBC_ALLOCATION,
 542                                 SBC_ENC_DEFAULT_ALLOCATION, G_PARAM_READWRITE));
 543
 544         g_object_class_install_property(object_class, PROP_BLOCKS,
 545                         g_param_spec_enum("blocks", "Blocks",
 546                                 "Blocks", GST_TYPE_SBC_BLOCKS,
 547                                 SBC_ENC_DEFAULT_BLOCKS, G_PARAM_READWRITE));
 548
 549         g_object_class_install_property(object_class, PROP_SUBBANDS,
 550                         g_param_spec_enum("subbands", "Sub bands",
 551                                 "Number of sub bands", GST_TYPE_SBC_SUBBANDS,
 552                                 SBC_ENC_DEFAULT_SUB_BANDS, G_PARAM_READWRITE));
 553
 554         g_object_class_install_property(object_class, PROP_BITPOOL,
 555                         g_param_spec_int("bitpool", "Bitpool",
 556                                 "Bitpool (use 1 for automatic selection)",
 557                                 SBC_ENC_BITPOOL_AUTO, SBC_ENC_BITPOOL_MAX,
 558                                 SBC_ENC_BITPOOL_AUTO, G_PARAM_READWRITE));
 559
 560         GST_DEBUG_CATEGORY_INIT(sbc_enc_debug, "sbcenc", 0,
 561                                                 "SBC encoding element");
 562 }
 563
 564 static void gst_sbc_enc_init(GstSbcEnc *self, GstSbcEncClass *klass)
 565 {
 566         self->sinkpad = gst_pad_new_from_static_template(
 567                 &sbc_enc_sink_factory, "sink");
 568         gst_pad_set_setcaps_function(self->sinkpad,
 569                         GST_DEBUG_FUNCPTR(sbc_enc_sink_setcaps));
 570         gst_element_add_pad(GST_ELEMENT(self), self->sinkpad);
 571
 572         self->srcpad = gst_pad_new_from_static_template(
 573                 &sbc_enc_src_factory, "src");
 574         gst_pad_set_getcaps_function(self->srcpad,
 575                 GST_DEBUG_FUNCPTR(sbc_enc_src_getcaps));
 576         gst_pad_set_setcaps_function(self->srcpad,
 577                 GST_DEBUG_FUNCPTR(sbc_enc_src_setcaps));
 578         gst_element_add_pad(GST_ELEMENT(self), self->srcpad);
 579
 580         gst_pad_set_chain_function(self->sinkpad,
 581                 GST_DEBUG_FUNCPTR(sbc_enc_chain));
 582
 583         self->subbands = SBC_ENC_DEFAULT_SUB_BANDS;
 584         self->blocks = SBC_ENC_DEFAULT_BLOCKS;
 585         self->mode = SBC_ENC_DEFAULT_MODE;
 586         self->allocation = SBC_ENC_DEFAULT_ALLOCATION;
 587         self->rate = SBC_ENC_DEFAULT_RATE;
 588         self->channels = SBC_ENC_DEFAULT_CHANNELS;
 589         self->bitpool = SBC_ENC_BITPOOL_AUTO;
 590
 591         self->frame_length = 0;
 592         self->frame_duration = 0;
 593
 594         self->adapter = gst_adapter_new();
 595 }
 596
 597 gboolean gst_sbc_enc_plugin_init(GstPlugin *plugin)
 598 {
 599         return gst_element_register(plugin, "sbcenc",
 600                         GST_RANK_NONE, GST_TYPE_SBC_ENC);
 601 }