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