ext/flac/gstflacenc.c

   1 /* GStreamer
   2  * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include <gstflacenc.h>
  25
  26 #include "flac_compat.h"
  27
  28 extern GstPadTemplate *gst_flacenc_src_template, *gst_flacenc_sink_template;
  29
  30 /* elementfactory information */
  31 GstElementDetails flacenc_details = {
  32   "FLAC encoder",
  33   "Codec/Audio/Encoder",
  34   "LGPL",
  35   "Encodes audio with the FLAC lossless audio encoder",
  36   VERSION,
  37   "Wim Taymans <wim.taymans@chello.be>",
  38   "(C) 2001",
  39 };
  40
  41 /* FlacEnc signals and args */
  42 enum {
  43   /* FILL ME */
  44   LAST_SIGNAL
  45 };
  46
  47 enum {
  48   ARG_0,
  49   ARG_QUALITY,
  50   ARG_STREAMABLE_SUBSET,
  51   ARG_MID_SIDE_STEREO,
  52   ARG_LOOSE_MID_SIDE_STEREO,
  53   ARG_BLOCKSIZE,
  54   ARG_MAX_LPC_ORDER,
  55   ARG_QLP_COEFF_PRECISION,
  56   ARG_QLP_COEFF_PREC_SEARCH,
  57   ARG_ESCAPE_CODING,
  58   ARG_EXHAUSTIVE_MODEL_SEARCH,
  59   ARG_MIN_RESIDUAL_PARTITION_ORDER,
  60   ARG_MAX_RESIDUAL_PARTITION_ORDER,
  61   ARG_RICE_PARAMETER_SEARCH_DIST,
  62 };
  63
  64 static void             gst_flacenc_init                (FlacEnc *flacenc);
  65 static void             gst_flacenc_class_init          (FlacEncClass *klass);
  66 static void             gst_flacenc_dispose             (GObject *object);
  67
  68 static GstPadConnectReturn
  69                         gst_flacenc_sinkconnect         (GstPad *pad, GstCaps *caps);
  70 static void             gst_flacenc_chain               (GstPad *pad, GstBuffer *buf);
  71
  72 static gboolean         gst_flacenc_update_quality      (FlacEnc *flacenc, gint quality);
  73 static void             gst_flacenc_set_property        (GObject *object, guint prop_id,
  74                                                          const GValue *value, GParamSpec *pspec);
  75 static void             gst_flacenc_get_property        (GObject *object, guint prop_id,
  76                                                          GValue *value, GParamSpec *pspec);
  77 static GstElementStateReturn
  78                         gst_flacenc_change_state        (GstElement *element);
  79
  80 static FLAC__StreamEncoderWriteStatus
  81                         gst_flacenc_write_callback      (const FLAC__StreamEncoder *encoder,
  82                                                          const FLAC__byte buffer[], unsigned bytes,
  83                                                          unsigned samples, unsigned current_frame,
  84                                                          void *client_data);
  85 static void             gst_flacenc_metadata_callback   (const FLAC__StreamEncoder *encoder,
  86                                                          const FLAC__StreamMetadata *metadata,
  87                                                          void *client_data);
  88
  89 static GstElementClass *parent_class = NULL;
  90 /*static guint gst_flacenc_signals[LAST_SIGNAL] = { 0 }; */
  91
  92 GType
  93 flacenc_get_type (void)
  94 {
  95   static GType flacenc_type = 0;
  96
  97   if (!flacenc_type) {
  98     static const GTypeInfo flacenc_info = {
  99       sizeof(FlacEncClass),
 100       NULL,
 101       NULL,
 102       (GClassInitFunc)gst_flacenc_class_init,
 103       NULL,
 104       NULL,
 105       sizeof(FlacEnc),
 106       0,
 107       (GInstanceInitFunc)gst_flacenc_init,
 108     };
 109     flacenc_type = g_type_register_static (GST_TYPE_ELEMENT, "FlacEnc", &flacenc_info, 0);
 110   }
 111   return flacenc_type;
 112 }
 113
 114 typedef struct {
 115   gboolean      exhaustive_model_search;
 116   gboolean      escape_coding;
 117   gboolean      mid_side;
 118   gboolean      loose_mid_side;
 119   guint         qlp_coeff_precision;
 120   gboolean      qlp_coeff_prec_search;
 121   guint         min_residual_partition_order;
 122   guint         max_residual_partition_order;
 123   guint         rice_parameter_search_dist;
 124   guint         max_lpc_order;
 125   guint         blocksize;
 126 } FlacEncParams;
 127
 128 static const FlacEncParams flacenc_params[] =
 129 {
 130   { FALSE, FALSE, FALSE, FALSE, 0, FALSE, 2, 2,  0, 0,  1152 },
 131   { FALSE, FALSE, TRUE,  TRUE,  0, FALSE, 2, 2,  0, 0,  1152 },
 132   { FALSE, FALSE, TRUE,  FALSE, 0, FALSE, 0, 3,  0, 0,  1152 },
 133   { FALSE, FALSE, FALSE, FALSE, 0, FALSE, 3, 3,  0, 6,  4608 },
 134   { FALSE, FALSE, TRUE,  TRUE,  0, FALSE, 3, 3,  0, 8,  4608 },
 135   { FALSE, FALSE, TRUE,  FALSE, 0, FALSE, 3, 3,  0, 8,  4608 },
 136   { FALSE, FALSE, TRUE,  FALSE, 0, FALSE, 0, 4,  0, 8,  4608 },
 137   { TRUE,  FALSE, TRUE,  FALSE, 0, FALSE, 0, 6,  0, 8,  4608 },
 138   { TRUE,  FALSE, TRUE,  FALSE, 0, FALSE, 0, 6,  0, 12, 4608 },
 139   { TRUE,  TRUE,  TRUE,  FALSE, 0, FALSE, 0, 16, 0, 32, 4608 },
 140 };
 141
 142 #define DEFAULT_QUALITY 5
 143
 144 #define GST_TYPE_FLACENC_QUALITY (gst_flacenc_quality_get_type ())
 145 GType
 146 gst_flacenc_quality_get_type (void)
 147 {
 148   static GType qtype = 0;
 149   if (qtype == 0) {
 150     static const GEnumValue values[] = {
 151       { 0, "0", "0 - Fastest compression" },
 152       { 1, "1", "1" },
 153       { 2, "2", "2" },
 154       { 3, "3", "3" },
 155       { 4, "4", "4" },
 156       { 5, "5", "5 - Default" },
 157       { 6, "6", "6" },
 158       { 7, "7", "7" },
 159       { 8, "8", "8 - Highest compression " },
 160       { 9, "9", "9 - Insane" },
 161       { 0, NULL, NULL }
 162     };
 163     qtype = g_enum_register_static ("FlacEncQuality", values);
 164   }
 165   return qtype;
 166 }
 167
 168 static void
 169 gst_flacenc_class_init (FlacEncClass *klass)
 170 {
 171   GObjectClass *gobject_class;
 172   GstElementClass *gstelement_class;
 173
 174   gobject_class = (GObjectClass*)klass;
 175   gstelement_class = (GstElementClass*)klass;
 176
 177   parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
 178
 179   /* we have no properties atm so this is a bit silly */
 180   gobject_class->set_property = gst_flacenc_set_property;
 181   gobject_class->get_property = gst_flacenc_get_property;
 182   gobject_class->dispose      = gst_flacenc_dispose;
 183
 184   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY,
 185     g_param_spec_enum ("quality",
 186                        "Quality",
 187                        "Speed versus compression tradeoff",
 188                        GST_TYPE_FLACENC_QUALITY, DEFAULT_QUALITY, G_PARAM_READWRITE));
 189   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_STREAMABLE_SUBSET,
 190     g_param_spec_boolean ("streamable_subset",
 191                           "Streamable subset",
 192                           "true to limit encoder to generating a Subset stream, else false",
 193                           TRUE, G_PARAM_READWRITE));
 194   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MID_SIDE_STEREO,
 195     g_param_spec_boolean ("mid_side_stereo",
 196                           "Do mid side stereo",
 197                           "Do mid side stereo (only for stereo input)",
 198                           flacenc_params[DEFAULT_QUALITY].mid_side, G_PARAM_READWRITE));
 199   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOOSE_MID_SIDE_STEREO,
 200     g_param_spec_boolean ("loose_mid_side_stereo",
 201                           "Loose mid side stereo",
 202                           "Loose mid side stereo",
 203                           flacenc_params[DEFAULT_QUALITY].loose_mid_side, G_PARAM_READWRITE));
 204   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BLOCKSIZE,
 205     g_param_spec_uint ("blocksize",
 206                        "Blocksize",
 207                        "Blocksize in samples",
 208                        FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE,
 209                        flacenc_params[DEFAULT_QUALITY].blocksize, G_PARAM_READWRITE));
 210   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MAX_LPC_ORDER,
 211     g_param_spec_uint ("max_lpc_order",
 212                        "Max LPC order",
 213                        "Max LPC order; 0 => use only fixed predictors",
 214                        0, FLAC__MAX_LPC_ORDER,
 215                        flacenc_params[DEFAULT_QUALITY].max_lpc_order, G_PARAM_READWRITE));
 216   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QLP_COEFF_PRECISION,
 217     g_param_spec_uint ("qlp_coeff_precision",
 218                        "QLP coefficients precision",
 219                        "Precision in bits of quantized linear-predictor coefficients; 0 = automatic",
 220                        0, 32,
 221                        flacenc_params[DEFAULT_QUALITY].qlp_coeff_precision, G_PARAM_READWRITE));
 222   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QLP_COEFF_PREC_SEARCH,
 223     g_param_spec_boolean ("qlp_coeff_prec_search",
 224                           "Do QLP coefficients precision search",
 225                           "false = use qlp_coeff_precision, "
 226                             "true = search around qlp_coeff_precision, take best",
 227                           flacenc_params[DEFAULT_QUALITY].qlp_coeff_prec_search, G_PARAM_READWRITE));
 228   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ESCAPE_CODING,
 229     g_param_spec_boolean ("escape_coding",
 230                           "Do Escape coding",
 231                           "search for escape codes in the entropy coding stage "
 232                             "for slightly better compression",
 233                           flacenc_params[DEFAULT_QUALITY].escape_coding, G_PARAM_READWRITE));
 234   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EXHAUSTIVE_MODEL_SEARCH,
 235     g_param_spec_boolean ("exhaustive_model_search",
 236                           "Do exhaustive model search",
 237                           "do exhaustive search of LP coefficient quantization (expensive!)",
 238                           flacenc_params[DEFAULT_QUALITY].exhaustive_model_search, G_PARAM_READWRITE));
 239   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MIN_RESIDUAL_PARTITION_ORDER,
 240     g_param_spec_uint ("min_residual_partition_order",
 241                        "Min residual partition order",
 242                        "Min residual partition order (above 4 doesn't usually help much)",
 243                        0, 16,
 244                        flacenc_params[DEFAULT_QUALITY].min_residual_partition_order, G_PARAM_READWRITE));
 245   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MAX_RESIDUAL_PARTITION_ORDER,
 246     g_param_spec_uint ("max_residual_partition_order",
 247                        "Max residual partition order",
 248                        "Max residual partition order (above 4 doesn't usually help much)",
 249                        0, 16,
 250                        flacenc_params[DEFAULT_QUALITY].max_residual_partition_order, G_PARAM_READWRITE));
 251   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_RICE_PARAMETER_SEARCH_DIST,
 252     g_param_spec_uint ("rice_parameter_search_dist",
 253                        "rice_parameter_search_dist",
 254                        "0 = try only calc'd parameter k; else try all [k-dist..k+dist] "
 255                          "parameters, use best",
 256                        0, FLAC__MAX_RICE_PARTITION_ORDER,
 257                        flacenc_params[DEFAULT_QUALITY].rice_parameter_search_dist, G_PARAM_READWRITE));
 258
 259   gstelement_class->change_state = gst_flacenc_change_state;
 260 }
 261
 262 static void
 263 gst_flacenc_init (FlacEnc *flacenc)
 264 {
 265   flacenc->sinkpad = gst_pad_new_from_template (gst_flacenc_sink_template, "sink");
 266   gst_element_add_pad(GST_ELEMENT(flacenc),flacenc->sinkpad);
 267   gst_pad_set_chain_function(flacenc->sinkpad,gst_flacenc_chain);
 268   gst_pad_set_link_function (flacenc->sinkpad, gst_flacenc_sinkconnect);
 269
 270   flacenc->srcpad = gst_pad_new_from_template (gst_flacenc_src_template, "src");
 271   gst_element_add_pad(GST_ELEMENT(flacenc),flacenc->srcpad);
 272
 273   GST_FLAG_SET (flacenc, GST_ELEMENT_EVENT_AWARE);
 274
 275   flacenc->encoder = FLAC__stream_encoder_new();
 276
 277   FLAC__stream_encoder_set_write_callback (flacenc->encoder,
 278                                         gst_flacenc_write_callback);
 279   FLAC__stream_encoder_set_metadata_callback (flacenc->encoder,
 280                                         gst_flacenc_metadata_callback);
 281   FLAC__stream_encoder_set_client_data (flacenc->encoder,
 282                                         flacenc);
 283
 284   flacenc->negotiated = FALSE;
 285   flacenc->first = TRUE;
 286   flacenc->first_buf = NULL;
 287   flacenc->data = NULL;
 288   gst_flacenc_update_quality (flacenc, DEFAULT_QUALITY);
 289 }
 290
 291 static void
 292 gst_flacenc_dispose (GObject *object)
 293 {
 294   FlacEnc *flacenc = GST_FLACENC (object);
 295
 296   FLAC__stream_encoder_delete (flacenc->encoder);
 297
 298   G_OBJECT_CLASS (parent_class)->dispose (object);
 299 }
 300
 301 static GstPadConnectReturn
 302 gst_flacenc_sinkconnect (GstPad *pad, GstCaps *caps)
 303 {
 304   FlacEnc *flacenc;
 305
 306   flacenc = GST_FLACENC (gst_pad_get_parent (pad));
 307
 308   if (!GST_CAPS_IS_FIXED (caps))
 309     return GST_PAD_LINK_DELAYED;
 310
 311   gst_caps_get_int (caps, "channels", &flacenc->channels);
 312   gst_caps_get_int (caps, "depth", &flacenc->depth);
 313   gst_caps_get_int (caps, "rate", &flacenc->sample_rate);
 314
 315   FLAC__stream_encoder_set_bits_per_sample (flacenc->encoder,
 316                                             flacenc->depth);
 317   FLAC__stream_encoder_set_sample_rate (flacenc->encoder,
 318                                         flacenc->sample_rate);
 319   FLAC__stream_encoder_set_channels (flacenc->encoder,
 320                                      flacenc->channels);
 321
 322   flacenc->negotiated = TRUE;
 323
 324   return GST_PAD_LINK_OK;
 325 }
 326
 327 static gboolean
 328 gst_flacenc_update_quality (FlacEnc *flacenc, gint quality)
 329 {
 330   flacenc->quality = quality;
 331
 332 #define DO_UPDATE(name, val, str)                               \
 333   G_STMT_START {                                                \
 334     if (FLAC__stream_encoder_get_##name (flacenc->encoder) !=   \
 335         flacenc_params[quality].val) {                          \
 336       FLAC__stream_encoder_set_##name (flacenc->encoder,        \
 337           flacenc_params[quality].val);                         \
 338       g_object_notify (G_OBJECT (flacenc), str);                \
 339     }                                                           \
 340   } G_STMT_END
 341
 342   g_object_freeze_notify (G_OBJECT (flacenc));
 343
 344   DO_UPDATE (do_mid_side_stereo,           mid_side,                     "mid_side_stereo");
 345   DO_UPDATE (loose_mid_side_stereo,        loose_mid_side,               "loose_mid_side");
 346   DO_UPDATE (blocksize,                    blocksize,                    "blocksize");
 347   DO_UPDATE (max_lpc_order,                max_lpc_order,                "max_lpc_order");
 348   DO_UPDATE (qlp_coeff_precision,          qlp_coeff_precision,          "qlp_coeff_precision");
 349   DO_UPDATE (do_qlp_coeff_prec_search,     qlp_coeff_prec_search,        "qlp_coeff_prec_search");
 350   DO_UPDATE (do_escape_coding,             escape_coding,                "escape_coding");
 351   DO_UPDATE (do_exhaustive_model_search,   exhaustive_model_search,      "exhaustive_model_search");
 352   DO_UPDATE (min_residual_partition_order, min_residual_partition_order, "min_residual_partition_order");
 353   DO_UPDATE (max_residual_partition_order, max_residual_partition_order, "max_residual_partition_order");
 354   DO_UPDATE (rice_parameter_search_dist,   rice_parameter_search_dist,   "rice_parameter_search_dist");
 355
 356 #undef DO_UPDATE
 357
 358   g_object_thaw_notify (G_OBJECT (flacenc));
 359
 360   return TRUE;
 361 }
 362
 363 static FLAC__StreamEncoderWriteStatus
 364 gst_flacenc_write_callback (const FLAC__StreamEncoder *encoder,
 365                             const FLAC__byte buffer[], unsigned bytes,
 366                             unsigned samples, unsigned current_frame,
 367                             void *client_data)
 368 {
 369   FlacEnc *flacenc;
 370   GstBuffer *outbuf;
 371
 372   flacenc = GST_FLACENC (client_data);
 373
 374   if (flacenc->stopped)
 375     return FLAC__STREAM_ENCODER_OK;
 376
 377   outbuf = gst_buffer_new_and_alloc (bytes);
 378
 379   memcpy (GST_BUFFER_DATA (outbuf), buffer, bytes);
 380
 381   if (flacenc->first) {
 382     flacenc->first_buf = outbuf;
 383     gst_buffer_ref (outbuf);
 384     flacenc->first = FALSE;
 385   }
 386
 387   gst_pad_push (flacenc->srcpad, outbuf);
 388
 389   return FLAC__STREAM_ENCODER_OK;
 390 }
 391
 392 static void
 393 gst_flacenc_metadata_callback (const FLAC__StreamEncoder *encoder,
 394                                const FLAC__StreamMetadata *metadata,
 395                                void *client_data)
 396 {
 397   GstEvent *event;
 398   FlacEnc *flacenc;
 399
 400   flacenc = GST_FLACENC (client_data);
 401
 402   if (flacenc->stopped)
 403     return;
 404
 405   event = gst_event_new_discontinuous (FALSE, GST_FORMAT_BYTES, 0, NULL);
 406   gst_pad_push (flacenc->srcpad, GST_BUFFER (event));
 407
 408   if (flacenc->first_buf) {
 409     const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
 410     const unsigned min_framesize = metadata->data.stream_info.min_framesize;
 411     const unsigned max_framesize = metadata->data.stream_info.max_framesize;
 412
 413     guint8 *data = GST_BUFFER_DATA (flacenc->first_buf);
 414     GstBuffer *outbuf = flacenc->first_buf;
 415
 416     /* this looks evil but is actually how one is supposed to write
 417      * the stream stats according to the FLAC examples */
 418
 419     memcpy (&data[26], metadata->data.stream_info.md5sum, 16);
 420
 421     data[21] = (data[21] & 0xf0) |
 422                (FLAC__byte)((samples >> 32) & 0x0f);
 423     data[22] = (FLAC__byte)((samples >> 24) & 0xff);
 424     data[23] = (FLAC__byte)((samples >> 16) & 0xff);
 425     data[24] = (FLAC__byte)((samples >> 8 ) & 0xff);
 426     data[25] = (FLAC__byte)((samples      ) & 0xff);
 427
 428     data[12] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
 429     data[13] = (FLAC__byte)((min_framesize >> 8 ) & 0xFF);
 430     data[14] = (FLAC__byte)((min_framesize      ) & 0xFF);
 431
 432     data[15] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
 433     data[16] = (FLAC__byte)((max_framesize >> 8 ) & 0xFF);
 434     data[17] = (FLAC__byte)((max_framesize      ) & 0xFF);
 435
 436     flacenc->first_buf = NULL;
 437     gst_pad_push (flacenc->srcpad, outbuf);
 438   }
 439 }
 440
 441 static void
 442 gst_flacenc_chain (GstPad *pad, GstBuffer *buf)
 443 {
 444   FlacEnc *flacenc;
 445   FLAC__int32 *data;
 446   gulong insize;
 447   gint samples, depth;
 448   gulong i;
 449   FLAC__bool res;
 450
 451   g_return_if_fail(buf != NULL);
 452
 453   flacenc = GST_FLACENC (gst_pad_get_parent (pad));
 454
 455   if (GST_IS_EVENT (buf)) {
 456     GstEvent *event = GST_EVENT (buf);
 457
 458     switch (GST_EVENT_TYPE (event)) {
 459       case GST_EVENT_EOS:
 460         FLAC__stream_encoder_finish(flacenc->encoder);
 461       default:
 462         gst_pad_event_default (pad, event);
 463         break;
 464     }
 465     return;
 466   }
 467
 468   if (!flacenc->negotiated) {
 469     gst_element_error (GST_ELEMENT (flacenc),
 470                     "format not negotiated");
 471     return;
 472   }
 473
 474   depth = flacenc->depth;
 475
 476   insize = GST_BUFFER_SIZE (buf);
 477   samples = insize / ((depth+7)>>3);
 478
 479   if (FLAC__stream_encoder_get_state (flacenc->encoder) ==
 480                   FLAC__STREAM_ENCODER_UNINITIALIZED)
 481   {
 482     FLAC__StreamEncoderState state;
 483
 484     state = FLAC__stream_encoder_init (flacenc->encoder);
 485     if (state != FLAC__STREAM_ENCODER_OK) {
 486       gst_element_error (GST_ELEMENT (flacenc),
 487                          "could not initialize encoder (wrong parameters?)");
 488       return;
 489     }
 490   }
 491
 492   /* we keep a pointer in the flacenc struct because we are freeing the data
 493    * after a push opreration that might never return */
 494   data = flacenc->data = g_malloc (samples * sizeof (FLAC__int32));
 495
 496   if (depth == 8) {
 497     gint8 *indata = (gint8 *) GST_BUFFER_DATA (buf);
 498
 499     for (i=0; i<samples; i++) {
 500       data[i] = (FLAC__int32) *indata++;
 501     }
 502   }
 503   else if (depth == 16) {
 504     gint16 *indata = (gint16 *) GST_BUFFER_DATA (buf);
 505
 506     for (i=0; i<samples; i++) {
 507       data[i] = (FLAC__int32) *indata++;
 508     }
 509   }
 510
 511   gst_buffer_unref(buf);
 512
 513   res = FLAC__stream_encoder_process_interleaved (flacenc->encoder,
 514                               (const FLAC__int32 *) data, samples / flacenc->channels);
 515
 516   g_free (flacenc->data);
 517   flacenc->data = NULL;
 518
 519   if (!res) {
 520     gst_element_error (GST_ELEMENT (flacenc),
 521                          "encoding error");
 522   }
 523 }
 524
 525 static void
 526 gst_flacenc_set_property (GObject *object, guint prop_id,
 527                           const GValue *value, GParamSpec *pspec)
 528 {
 529   FlacEnc *this;
 530
 531   this = (FlacEnc *)object;
 532   switch (prop_id) {
 533     case ARG_QUALITY:
 534       gst_flacenc_update_quality (this, g_value_get_enum (value));
 535       break;
 536     case ARG_STREAMABLE_SUBSET:
 537       FLAC__stream_encoder_set_streamable_subset (this->encoder,
 538                            g_value_get_boolean (value));
 539       break;
 540     case ARG_MID_SIDE_STEREO:
 541       FLAC__stream_encoder_set_do_mid_side_stereo (this->encoder,
 542                            g_value_get_boolean (value));
 543       break;
 544     case ARG_LOOSE_MID_SIDE_STEREO:
 545       FLAC__stream_encoder_set_loose_mid_side_stereo (this->encoder,
 546                            g_value_get_boolean (value));
 547       break;
 548     case ARG_BLOCKSIZE:
 549       FLAC__stream_encoder_set_blocksize (this->encoder,
 550                            g_value_get_uint (value));
 551       break;
 552     case ARG_MAX_LPC_ORDER:
 553       FLAC__stream_encoder_set_max_lpc_order (this->encoder,
 554                            g_value_get_uint (value));
 555       break;
 556     case ARG_QLP_COEFF_PRECISION:
 557       FLAC__stream_encoder_set_qlp_coeff_precision (this->encoder,
 558                            g_value_get_uint (value));
 559       break;
 560     case ARG_QLP_COEFF_PREC_SEARCH:
 561       FLAC__stream_encoder_set_do_qlp_coeff_prec_search (this->encoder,
 562                            g_value_get_boolean (value));
 563       break;
 564     case ARG_ESCAPE_CODING:
 565       FLAC__stream_encoder_set_do_escape_coding (this->encoder,
 566                            g_value_get_boolean (value));
 567       break;
 568     case ARG_EXHAUSTIVE_MODEL_SEARCH:
 569       FLAC__stream_encoder_set_do_exhaustive_model_search (this->encoder,
 570                            g_value_get_boolean (value));
 571       break;
 572     case ARG_MIN_RESIDUAL_PARTITION_ORDER:
 573       FLAC__stream_encoder_set_min_residual_partition_order (this->encoder,
 574                            g_value_get_uint (value));
 575       break;
 576     case ARG_MAX_RESIDUAL_PARTITION_ORDER:
 577       FLAC__stream_encoder_set_max_residual_partition_order (this->encoder,
 578                            g_value_get_uint (value));
 579       break;
 580     case ARG_RICE_PARAMETER_SEARCH_DIST:
 581       FLAC__stream_encoder_set_rice_parameter_search_dist (this->encoder,
 582                                                  g_value_get_uint (value));
 583       break;
 584     default:
 585       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 586       return;
 587   }
 588 }
 589
 590 static void
 591 gst_flacenc_get_property (GObject *object, guint prop_id,
 592                           GValue *value, GParamSpec *pspec)
 593 {
 594   FlacEnc *this;
 595
 596   this = (FlacEnc *)object;
 597
 598   switch (prop_id) {
 599     case ARG_QUALITY:
 600       g_value_set_enum (value, this->quality);
 601       break;
 602     case ARG_STREAMABLE_SUBSET:
 603       g_value_set_boolean (value,
 604               FLAC__stream_encoder_get_streamable_subset (this->encoder));
 605       break;
 606     case ARG_MID_SIDE_STEREO:
 607       g_value_set_boolean (value,
 608               FLAC__stream_encoder_get_do_mid_side_stereo (this->encoder));
 609       break;
 610     case ARG_LOOSE_MID_SIDE_STEREO:
 611       g_value_set_boolean (value,
 612               FLAC__stream_encoder_get_loose_mid_side_stereo (this->encoder));
 613       break;
 614     case ARG_BLOCKSIZE:
 615       g_value_set_uint (value,
 616               FLAC__stream_encoder_get_blocksize (this->encoder));
 617       break;
 618     case ARG_MAX_LPC_ORDER:
 619       g_value_set_uint (value,
 620               FLAC__stream_encoder_get_max_lpc_order (this->encoder));
 621       break;
 622     case ARG_QLP_COEFF_PRECISION:
 623       g_value_set_uint (value,
 624               FLAC__stream_encoder_get_qlp_coeff_precision (this->encoder));
 625       break;
 626     case ARG_QLP_COEFF_PREC_SEARCH:
 627       g_value_set_boolean (value,
 628               FLAC__stream_encoder_get_do_qlp_coeff_prec_search (this->encoder));
 629       break;
 630     case ARG_ESCAPE_CODING:
 631       g_value_set_boolean (value,
 632               FLAC__stream_encoder_get_do_escape_coding (this->encoder));
 633       break;
 634     case ARG_EXHAUSTIVE_MODEL_SEARCH:
 635       g_value_set_boolean (value,
 636               FLAC__stream_encoder_get_do_exhaustive_model_search (this->encoder));
 637       break;
 638     case ARG_MIN_RESIDUAL_PARTITION_ORDER:
 639       g_value_set_uint (value,
 640               FLAC__stream_encoder_get_min_residual_partition_order (this->encoder));
 641       break;
 642     case ARG_MAX_RESIDUAL_PARTITION_ORDER:
 643       g_value_set_uint (value,
 644               FLAC__stream_encoder_get_max_residual_partition_order (this->encoder));
 645       break;
 646     case ARG_RICE_PARAMETER_SEARCH_DIST:
 647       g_value_set_uint (value,
 648               FLAC__stream_encoder_get_rice_parameter_search_dist (this->encoder));
 649       break;
 650     default:
 651       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 652       break;
 653   }
 654 }
 655
 656 static GstElementStateReturn
 657 gst_flacenc_change_state (GstElement *element)
 658 {
 659   FlacEnc *flacenc = GST_FLACENC (element);
 660
 661   switch (GST_STATE_TRANSITION (element)) {
 662     case GST_STATE_NULL_TO_READY:
 663     case GST_STATE_READY_TO_PAUSED:
 664       flacenc->first = TRUE;
 665       flacenc->stopped = FALSE;
 666       break;
 667     case GST_STATE_PAUSED_TO_PLAYING:
 668     case GST_STATE_PLAYING_TO_PAUSED:
 669       break;
 670     case GST_STATE_PAUSED_TO_READY:
 671       if (FLAC__stream_encoder_get_state (flacenc->encoder) !=
 672                         FLAC__STREAM_ENCODER_UNINITIALIZED) {
 673         flacenc->stopped = TRUE;
 674         FLAC__stream_encoder_finish (flacenc->encoder);
 675       }
 676       flacenc->negotiated = FALSE;
 677       if (flacenc->first_buf)
 678         gst_buffer_unref (flacenc->first_buf);
 679       flacenc->first_buf = NULL;
 680       g_free (flacenc->data);
 681       flacenc->data = NULL;
 682       break;
 683     case GST_STATE_READY_TO_NULL:
 684     default:
 685       break;
 686   }
 687
 688   if (GST_ELEMENT_CLASS (parent_class)->change_state)
 689     return GST_ELEMENT_CLASS (parent_class)->change_state (element);
 690
 691   return GST_STATE_SUCCESS;
 692 }
 693