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 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include <gstflacenc.h>
  28
  29 #include "flac_compat.h"
  30
  31 extern GstPadTemplate *gst_flacenc_src_template, *gst_flacenc_sink_template;
  32
  33 /* elementfactory information */
  34 GstElementDetails flacenc_details = {
  35   "FLAC encoder",
  36   "Codec/Audio/Encoder",
  37   "LGPL",
  38   "Encodes audio with the FLAC lossless audio encoder",
  39   VERSION,
  40   "Wim Taymans <wim.taymans@chello.be>",
  41   "(C) 2001",
  42 };
  43
  44 /* FlacEnc signals and args */
  45 enum {
  46   /* FILL ME */
  47   LAST_SIGNAL
  48 };
  49
  50 enum {
  51   ARG_0,
  52   ARG_QUALITY,
  53   ARG_STREAMABLE_SUBSET,
  54   ARG_MID_SIDE_STEREO,
  55   ARG_LOOSE_MID_SIDE_STEREO,
  56   ARG_BLOCKSIZE,
  57   ARG_MAX_LPC_ORDER,
  58   ARG_QLP_COEFF_PRECISION,
  59   ARG_QLP_COEFF_PREC_SEARCH,
  60   ARG_ESCAPE_CODING,
  61   ARG_EXHAUSTIVE_MODEL_SEARCH,
  62   ARG_MIN_RESIDUAL_PARTITION_ORDER,
  63   ARG_MAX_RESIDUAL_PARTITION_ORDER,
  64   ARG_RICE_PARAMETER_SEARCH_DIST,
  65 };
  66
  67 static void             gst_flacenc_init                (FlacEnc *flacenc);
  68 static void             gst_flacenc_class_init          (FlacEncClass *klass);
  69 static void             gst_flacenc_dispose             (GObject *object);
  70
  71 static GstPadLinkReturn
  72                         gst_flacenc_sinkconnect         (GstPad *pad, GstCaps *caps);
  73 static void             gst_flacenc_chain               (GstPad *pad, GstBuffer *buf);
  74
  75 static gboolean         gst_flacenc_update_quality      (FlacEnc *flacenc, gint quality);
  76 static void             gst_flacenc_set_property        (GObject *object, guint prop_id,
  77                                                          const GValue *value, GParamSpec *pspec);
  78 static void             gst_flacenc_get_property        (GObject *object, guint prop_id,
  79                                                          GValue *value, GParamSpec *pspec);
  80 static GstElementStateReturn
  81                         gst_flacenc_change_state        (GstElement *element);
  82
  83 static FLAC__StreamEncoderWriteStatus
  84                         gst_flacenc_write_callback      (const FLAC__SeekableStreamEncoder *encoder,
  85                                                          const FLAC__byte buffer[], unsigned bytes,
  86                                                          unsigned samples, unsigned current_frame,
  87                                                          void *client_data);
  88 static FLAC__SeekableStreamEncoderSeekStatus
  89                         gst_flacenc_seek_callback       (const FLAC__SeekableStreamEncoder *encoder,
  90                                                          FLAC__uint64 absolute_byte_offset,
  91                                                          void *client_data);
  92
  93 static GstElementClass *parent_class = NULL;
  94 /*static guint gst_flacenc_signals[LAST_SIGNAL] = { 0 }; */
  95
  96 GType
  97 flacenc_get_type (void)
  98 {
  99   static GType flacenc_type = 0;
 100
 101   if (!flacenc_type) {
 102     static const GTypeInfo flacenc_info = {
 103       sizeof(FlacEncClass),
 104       NULL,
 105       NULL,
 106       (GClassInitFunc)gst_flacenc_class_init,
 107       NULL,
 108       NULL,
 109       sizeof(FlacEnc),
 110       0,
 111       (GInstanceInitFunc)gst_flacenc_init,
 112     };
 113     flacenc_type = g_type_register_static (GST_TYPE_ELEMENT, "FlacEnc", &flacenc_info, 0);
 114   }
 115   return flacenc_type;
 116 }
 117
 118 typedef struct {
 119   gboolean      exhaustive_model_search;
 120   gboolean      escape_coding;
 121   gboolean      mid_side;
 122   gboolean      loose_mid_side;
 123   guint         qlp_coeff_precision;
 124   gboolean      qlp_coeff_prec_search;
 125   guint         min_residual_partition_order;
 126   guint         max_residual_partition_order;
 127   guint         rice_parameter_search_dist;
 128   guint         max_lpc_order;
 129   guint         blocksize;
 130 } FlacEncParams;
 131
 132 static const FlacEncParams flacenc_params[] =
 133 {
 134   { FALSE, FALSE, FALSE, FALSE, 0, FALSE, 2, 2,  0, 0,  1152 },
 135   { FALSE, FALSE, TRUE,  TRUE,  0, FALSE, 2, 2,  0, 0,  1152 },
 136   { FALSE, FALSE, TRUE,  FALSE, 0, FALSE, 0, 3,  0, 0,  1152 },
 137   { FALSE, FALSE, FALSE, FALSE, 0, FALSE, 3, 3,  0, 6,  4608 },
 138   { FALSE, FALSE, TRUE,  TRUE,  0, FALSE, 3, 3,  0, 8,  4608 },
 139   { FALSE, FALSE, TRUE,  FALSE, 0, FALSE, 3, 3,  0, 8,  4608 },
 140   { FALSE, FALSE, TRUE,  FALSE, 0, FALSE, 0, 4,  0, 8,  4608 },
 141   { TRUE,  FALSE, TRUE,  FALSE, 0, FALSE, 0, 6,  0, 8,  4608 },
 142   { TRUE,  FALSE, TRUE,  FALSE, 0, FALSE, 0, 6,  0, 12, 4608 },
 143   { TRUE,  TRUE,  TRUE,  FALSE, 0, FALSE, 0, 16, 0, 32, 4608 },
 144 };
 145
 146 #define DEFAULT_QUALITY 5
 147
 148 #define GST_TYPE_FLACENC_QUALITY (gst_flacenc_quality_get_type ())
 149 GType
 150 gst_flacenc_quality_get_type (void)
 151 {
 152   static GType qtype = 0;
 153   if (qtype == 0) {
 154     static const GEnumValue values[] = {
 155       { 0, "0", "0 - Fastest compression" },
 156       { 1, "1", "1" },
 157       { 2, "2", "2" },
 158       { 3, "3", "3" },
 159       { 4, "4", "4" },
 160       { 5, "5", "5 - Default" },
 161       { 6, "6", "6" },
 162       { 7, "7", "7" },
 163       { 8, "8", "8 - Highest compression " },
 164       { 9, "9", "9 - Insane" },
 165       { 0, NULL, NULL }
 166     };
 167     qtype = g_enum_register_static ("FlacEncQuality", values);
 168   }
 169   return qtype;
 170 }
 171
 172 static void
 173 gst_flacenc_class_init (FlacEncClass *klass)
 174 {
 175   GObjectClass *gobject_class;
 176   GstElementClass *gstelement_class;
 177
 178   gobject_class = (GObjectClass*)klass;
 179   gstelement_class = (GstElementClass*)klass;
 180
 181   parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
 182
 183   /* we have no properties atm so this is a bit silly */
 184   gobject_class->set_property = gst_flacenc_set_property;
 185   gobject_class->get_property = gst_flacenc_get_property;
 186   gobject_class->dispose      = gst_flacenc_dispose;
 187
 188   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY,
 189     g_param_spec_enum ("quality",
 190                        "Quality",
 191                        "Speed versus compression tradeoff",
 192                        GST_TYPE_FLACENC_QUALITY, DEFAULT_QUALITY, G_PARAM_READWRITE));
 193   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_STREAMABLE_SUBSET,
 194     g_param_spec_boolean ("streamable_subset",
 195                           "Streamable subset",
 196                           "true to limit encoder to generating a Subset stream, else false",
 197                           TRUE, G_PARAM_READWRITE));
 198   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MID_SIDE_STEREO,
 199     g_param_spec_boolean ("mid_side_stereo",
 200                           "Do mid side stereo",
 201                           "Do mid side stereo (only for stereo input)",
 202                           flacenc_params[DEFAULT_QUALITY].mid_side, G_PARAM_READWRITE));
 203   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOOSE_MID_SIDE_STEREO,
 204     g_param_spec_boolean ("loose_mid_side_stereo",
 205                           "Loose mid side stereo",
 206                           "Loose mid side stereo",
 207                           flacenc_params[DEFAULT_QUALITY].loose_mid_side, G_PARAM_READWRITE));
 208   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BLOCKSIZE,
 209     g_param_spec_uint ("blocksize",
 210                        "Blocksize",
 211                        "Blocksize in samples",
 212                        FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE,
 213                        flacenc_params[DEFAULT_QUALITY].blocksize, G_PARAM_READWRITE));
 214   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MAX_LPC_ORDER,
 215     g_param_spec_uint ("max_lpc_order",
 216                        "Max LPC order",
 217                        "Max LPC order; 0 => use only fixed predictors",
 218                        0, FLAC__MAX_LPC_ORDER,
 219                        flacenc_params[DEFAULT_QUALITY].max_lpc_order, G_PARAM_READWRITE));
 220   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QLP_COEFF_PRECISION,
 221     g_param_spec_uint ("qlp_coeff_precision",
 222                        "QLP coefficients precision",
 223                        "Precision in bits of quantized linear-predictor coefficients; 0 = automatic",
 224                        0, 32,
 225                        flacenc_params[DEFAULT_QUALITY].qlp_coeff_precision, G_PARAM_READWRITE));
 226   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QLP_COEFF_PREC_SEARCH,
 227     g_param_spec_boolean ("qlp_coeff_prec_search",
 228                           "Do QLP coefficients precision search",
 229                           "false = use qlp_coeff_precision, "
 230                             "true = search around qlp_coeff_precision, take best",
 231                           flacenc_params[DEFAULT_QUALITY].qlp_coeff_prec_search, G_PARAM_READWRITE));
 232   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ESCAPE_CODING,
 233     g_param_spec_boolean ("escape_coding",
 234                           "Do Escape coding",
 235                           "search for escape codes in the entropy coding stage "
 236                             "for slightly better compression",
 237                           flacenc_params[DEFAULT_QUALITY].escape_coding, G_PARAM_READWRITE));
 238   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EXHAUSTIVE_MODEL_SEARCH,
 239     g_param_spec_boolean ("exhaustive_model_search",
 240                           "Do exhaustive model search",
 241                           "do exhaustive search of LP coefficient quantization (expensive!)",
 242                           flacenc_params[DEFAULT_QUALITY].exhaustive_model_search, G_PARAM_READWRITE));
 243   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MIN_RESIDUAL_PARTITION_ORDER,
 244     g_param_spec_uint ("min_residual_partition_order",
 245                        "Min residual partition order",
 246                        "Min residual partition order (above 4 doesn't usually help much)",
 247                        0, 16,
 248                        flacenc_params[DEFAULT_QUALITY].min_residual_partition_order, G_PARAM_READWRITE));
 249   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MAX_RESIDUAL_PARTITION_ORDER,
 250     g_param_spec_uint ("max_residual_partition_order",
 251                        "Max residual partition order",
 252                        "Max residual partition order (above 4 doesn't usually help much)",
 253                        0, 16,
 254                        flacenc_params[DEFAULT_QUALITY].max_residual_partition_order, G_PARAM_READWRITE));
 255   g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_RICE_PARAMETER_SEARCH_DIST,
 256     g_param_spec_uint ("rice_parameter_search_dist",
 257                        "rice_parameter_search_dist",
 258                        "0 = try only calc'd parameter k; else try all [k-dist..k+dist] "
 259                          "parameters, use best",
 260                        0, FLAC__MAX_RICE_PARTITION_ORDER,
 261                        flacenc_params[DEFAULT_QUALITY].rice_parameter_search_dist, G_PARAM_READWRITE));
 262
 263   gstelement_class->change_state = gst_flacenc_change_state;
 264 }
 265
 266 static void
 267 gst_flacenc_init (FlacEnc *flacenc)
 268 {
 269   flacenc->sinkpad = gst_pad_new_from_template (gst_flacenc_sink_template, "sink");
 270   gst_element_add_pad(GST_ELEMENT(flacenc),flacenc->sinkpad);
 271   gst_pad_set_chain_function(flacenc->sinkpad,gst_flacenc_chain);
 272   gst_pad_set_link_function (flacenc->sinkpad, gst_flacenc_sinkconnect);
 273
 274   flacenc->srcpad = gst_pad_new_from_template (gst_flacenc_src_template, "src");
 275   gst_element_add_pad(GST_ELEMENT(flacenc),flacenc->srcpad);
 276
 277   GST_FLAG_SET (flacenc, GST_ELEMENT_EVENT_AWARE);
 278
 279   flacenc->encoder = FLAC__seekable_stream_encoder_new();
 280
 281   FLAC__seekable_stream_encoder_set_write_callback (flacenc->encoder,
 282                                         gst_flacenc_write_callback);
 283   FLAC__seekable_stream_encoder_set_seek_callback (flacenc->encoder,
 284                                         gst_flacenc_seek_callback);
 285
 286   FLAC__seekable_stream_encoder_set_client_data (flacenc->encoder,
 287                                         flacenc);
 288
 289   flacenc->metadata = GST_CAPS_NEW (
 290                   "flacenc_metadata",
 291                   "application/x-gst-metadata",
 292                     "DESCRIPTION",      GST_PROPS_STRING ("Track encoded with GStreamer"),
 293                     "DATE",             GST_PROPS_STRING (""),
 294                     "TRACKNUMBER",      GST_PROPS_STRING (""),
 295                     "TITLE",            GST_PROPS_STRING (""),
 296                     "ARTIST",           GST_PROPS_STRING (""),
 297                     "ALBUM",            GST_PROPS_STRING (""),
 298                     "GENRE",            GST_PROPS_STRING (""),
 299                     "VERSION",          GST_PROPS_STRING (""),
 300                     "COPYRIGHT",        GST_PROPS_STRING (""),
 301                     "LICENSE",          GST_PROPS_STRING (""),
 302                     "ORGANISATION",     GST_PROPS_STRING (""),
 303                     "LOCATION",         GST_PROPS_STRING (""),
 304                     "CONTACT",          GST_PROPS_STRING (""),
 305                     "ISRC",             GST_PROPS_STRING ("")
 306                   );
 307
 308   flacenc->negotiated = FALSE;
 309   flacenc->first = TRUE;
 310   flacenc->first_buf = NULL;
 311   flacenc->data = NULL;
 312   gst_flacenc_update_quality (flacenc, DEFAULT_QUALITY);
 313 }
 314
 315 static void
 316 gst_flacenc_dispose (GObject *object)
 317 {
 318   FlacEnc *flacenc = GST_FLACENC (object);
 319
 320   FLAC__seekable_stream_encoder_delete (flacenc->encoder);
 321
 322   G_OBJECT_CLASS (parent_class)->dispose (object);
 323 }
 324
 325 static GstPadLinkReturn
 326 gst_flacenc_sinkconnect (GstPad *pad, GstCaps *caps)
 327 {
 328   FlacEnc *flacenc;
 329
 330   flacenc = GST_FLACENC (gst_pad_get_parent (pad));
 331
 332   if (!GST_CAPS_IS_FIXED (caps))
 333     return GST_PAD_LINK_DELAYED;
 334
 335   gst_caps_get_int (caps, "channels", &flacenc->channels);
 336   gst_caps_get_int (caps, "depth", &flacenc->depth);
 337   gst_caps_get_int (caps, "rate", &flacenc->sample_rate);
 338
 339   FLAC__seekable_stream_encoder_set_bits_per_sample (flacenc->encoder,
 340                                             flacenc->depth);
 341   FLAC__seekable_stream_encoder_set_sample_rate (flacenc->encoder,
 342                                         flacenc->sample_rate);
 343   FLAC__seekable_stream_encoder_set_channels (flacenc->encoder,
 344                                      flacenc->channels);
 345
 346   flacenc->negotiated = TRUE;
 347
 348   return GST_PAD_LINK_OK;
 349 }
 350
 351 static gboolean
 352 gst_flacenc_update_quality (FlacEnc *flacenc, gint quality)
 353 {
 354   flacenc->quality = quality;
 355
 356 #define DO_UPDATE(name, val, str)                               \
 357   G_STMT_START {                                                \
 358     if (FLAC__seekable_stream_encoder_get_##name (flacenc->encoder) !=  \
 359         flacenc_params[quality].val) {                          \
 360       FLAC__seekable_stream_encoder_set_##name (flacenc->encoder,       \
 361           flacenc_params[quality].val);                         \
 362       g_object_notify (G_OBJECT (flacenc), str);                \
 363     }                                                           \
 364   } G_STMT_END
 365
 366   g_object_freeze_notify (G_OBJECT (flacenc));
 367
 368   DO_UPDATE (do_mid_side_stereo,           mid_side,                     "mid_side_stereo");
 369   DO_UPDATE (loose_mid_side_stereo,        loose_mid_side,               "loose_mid_side");
 370   DO_UPDATE (blocksize,                    blocksize,                    "blocksize");
 371   DO_UPDATE (max_lpc_order,                max_lpc_order,                "max_lpc_order");
 372   DO_UPDATE (qlp_coeff_precision,          qlp_coeff_precision,          "qlp_coeff_precision");
 373   DO_UPDATE (do_qlp_coeff_prec_search,     qlp_coeff_prec_search,        "qlp_coeff_prec_search");
 374   DO_UPDATE (do_escape_coding,             escape_coding,                "escape_coding");
 375   DO_UPDATE (do_exhaustive_model_search,   exhaustive_model_search,      "exhaustive_model_search");
 376   DO_UPDATE (min_residual_partition_order, min_residual_partition_order, "min_residual_partition_order");
 377   DO_UPDATE (max_residual_partition_order, max_residual_partition_order, "max_residual_partition_order");
 378   DO_UPDATE (rice_parameter_search_dist,   rice_parameter_search_dist,   "rice_parameter_search_dist");
 379
 380 #undef DO_UPDATE
 381
 382   g_object_thaw_notify (G_OBJECT (flacenc));
 383
 384   return TRUE;
 385 }
 386
 387 static FLAC__SeekableStreamEncoderSeekStatus
 388 gst_flacenc_seek_callback (const FLAC__SeekableStreamEncoder *encoder,
 389                            FLAC__uint64 absolute_byte_offset,
 390                            void *client_data)
 391 {
 392 FlacEnc *flacenc;
 393 GstEvent *event;
 394
 395   flacenc = GST_FLACENC (client_data);
 396
 397   if (flacenc->stopped)
 398     return FLAC__STREAM_ENCODER_OK;
 399
 400   event = gst_event_new_seek ((GstSeekType)(int)(GST_FORMAT_BYTES | GST_SEEK_METHOD_SET), absolute_byte_offset);
 401
 402   if (event)
 403     gst_pad_push (flacenc->srcpad, GST_BUFFER (event));
 404
 405   return  FLAC__STREAM_ENCODER_OK;
 406 }
 407
 408 static FLAC__StreamEncoderWriteStatus
 409 gst_flacenc_write_callback (const FLAC__SeekableStreamEncoder *encoder,
 410                             const FLAC__byte buffer[], unsigned bytes,
 411                             unsigned samples, unsigned current_frame,
 412                             void *client_data)
 413 {
 414   FlacEnc *flacenc;
 415   GstBuffer *outbuf;
 416
 417   flacenc = GST_FLACENC (client_data);
 418
 419   if (flacenc->stopped)
 420     return FLAC__STREAM_ENCODER_OK;
 421
 422   outbuf = gst_buffer_new_and_alloc (bytes);
 423
 424   memcpy (GST_BUFFER_DATA (outbuf), buffer, bytes);
 425
 426   if (flacenc->first) {
 427     flacenc->first_buf = outbuf;
 428     gst_buffer_ref (outbuf);
 429     flacenc->first = FALSE;
 430   }
 431
 432   gst_pad_push (flacenc->srcpad, outbuf);
 433
 434   return FLAC__STREAM_ENCODER_OK;
 435 }
 436
 437 static void
 438 gst_flacenc_set_metadata (FlacEnc *flacenc, GstCaps *caps)
 439 {
 440   guint indice;
 441   guint comments;
 442   const gchar *meta_types[] = { "TITLE", "VERSION", "ALBUM", "TRACKNUMBER",
 443                                 "ARTIST", "PERFORMER", "COPYRIGHT", "LICENSE",
 444                                 "ORGANISATION", "DESCRIPTION", "GENRE", "DATE",
 445                                 "LOCATION", "CONTACT", "ISRC", NULL };
 446
 447   g_return_if_fail (flacenc != NULL);
 448
 449   flacenc->meta = g_malloc (sizeof (FLAC__StreamMetadata **));
 450
 451   flacenc->meta[0] = FLAC__metadata_object_new (FLAC__METADATA_TYPE_VORBIS_COMMENT);
 452
 453   for ( indice = 0, comments=0; meta_types[indice] != NULL; indice++) {
 454     if (gst_caps_has_property(caps, meta_types[indice])) {
 455       const gchar *entry;
 456       gchar *data;
 457       FLAC__StreamMetadata_VorbisComment_Entry commment_entry;
 458
 459       gst_caps_get_string(caps, (gchar *)meta_types[indice], &entry);
 460
 461       if (!strcmp (entry, ""))
 462         continue;
 463
 464       data = g_strdup_printf("%s=%s", meta_types[indice], entry);
 465       commment_entry.length = GUINT32_TO_LE (strlen(entry) + strlen(meta_types[indice]) + 1);
 466       commment_entry.entry  =  g_convert (data, commment_entry.length, "UTF8", "ISO-8859-1", NULL, NULL, NULL);
 467
 468       FLAC__metadata_object_vorbiscomment_insert_comment (flacenc->meta[0], comments++, commment_entry, TRUE);
 469     }
 470   }
 471
 472   FLAC__seekable_stream_encoder_set_metadata(flacenc->encoder, flacenc->meta, 1);
 473 }
 474
 475
 476
 477 static void
 478 gst_flacenc_chain (GstPad *pad, GstBuffer *buf)
 479 {
 480   FlacEnc *flacenc;
 481   FLAC__int32 *data;
 482   gulong insize;
 483   gint samples, depth;
 484   gulong i;
 485   FLAC__bool res;
 486
 487   g_return_if_fail(buf != NULL);
 488
 489   flacenc = GST_FLACENC (gst_pad_get_parent (pad));
 490
 491   if (GST_IS_EVENT (buf)) {
 492     GstEvent *event = GST_EVENT (buf);
 493
 494     switch (GST_EVENT_TYPE (event)) {
 495       case GST_EVENT_EOS:
 496         FLAC__seekable_stream_encoder_finish(flacenc->encoder);
 497       default:
 498         gst_pad_event_default (pad, event);
 499         break;
 500     }
 501     return;
 502   }
 503
 504   if (!flacenc->negotiated) {
 505     gst_element_error (GST_ELEMENT (flacenc),
 506                     "format not negotiated");
 507     return;
 508   }
 509
 510   depth = flacenc->depth;
 511
 512   insize = GST_BUFFER_SIZE (buf);
 513   samples = insize / ((depth+7)>>3);
 514
 515   if (FLAC__seekable_stream_encoder_get_state (flacenc->encoder) ==
 516                   FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
 517   {
 518     FLAC__SeekableStreamEncoderState state;
 519
 520     gst_flacenc_set_metadata (flacenc, flacenc->metadata);
 521     state = FLAC__seekable_stream_encoder_init (flacenc->encoder);
 522     if (state != FLAC__STREAM_ENCODER_OK) {
 523       gst_element_error (GST_ELEMENT (flacenc),
 524                          "could not initialize encoder (wrong parameters?)");
 525       return;
 526     }
 527   }
 528
 529   /* we keep a pointer in the flacenc struct because we are freeing the data
 530    * after a push opreration that might never return */
 531   data = flacenc->data = g_malloc (samples * sizeof (FLAC__int32));
 532
 533   if (depth == 8) {
 534     gint8 *indata = (gint8 *) GST_BUFFER_DATA (buf);
 535
 536
 537     for (i=0; i<samples; i++) {
 538       data[i] = (FLAC__int32) *indata++;
 539     }
 540   }
 541   else if (depth == 16) {
 542     gint16 *indata = (gint16 *) GST_BUFFER_DATA (buf);
 543
 544     for (i=0; i<samples; i++) {
 545       data[i] = (FLAC__int32) *indata++;
 546     }
 547   }
 548
 549   gst_buffer_unref(buf);
 550
 551   res = FLAC__seekable_stream_encoder_process_interleaved (flacenc->encoder,
 552                               (const FLAC__int32 *) data, samples / flacenc->channels);
 553
 554   g_free (flacenc->data);
 555   flacenc->data = NULL;
 556
 557   if (!res) {
 558     gst_element_error (GST_ELEMENT (flacenc),
 559                          "encoding error");
 560   }
 561 }
 562
 563 static void
 564 gst_flacenc_set_property (GObject *object, guint prop_id,
 565                           const GValue *value, GParamSpec *pspec)
 566 {
 567   FlacEnc *this;
 568
 569   this = (FlacEnc *)object;
 570   switch (prop_id) {
 571     case ARG_QUALITY:
 572       gst_flacenc_update_quality (this, g_value_get_enum (value));
 573       break;
 574     case ARG_STREAMABLE_SUBSET:
 575       FLAC__seekable_stream_encoder_set_streamable_subset (this->encoder,
 576                            g_value_get_boolean (value));
 577       break;
 578     case ARG_MID_SIDE_STEREO:
 579       FLAC__seekable_stream_encoder_set_do_mid_side_stereo (this->encoder,
 580                            g_value_get_boolean (value));
 581       break;
 582     case ARG_LOOSE_MID_SIDE_STEREO:
 583       FLAC__seekable_stream_encoder_set_loose_mid_side_stereo (this->encoder,
 584                            g_value_get_boolean (value));
 585       break;
 586     case ARG_BLOCKSIZE:
 587       FLAC__seekable_stream_encoder_set_blocksize (this->encoder,
 588                            g_value_get_uint (value));
 589       break;
 590     case ARG_MAX_LPC_ORDER:
 591       FLAC__seekable_stream_encoder_set_max_lpc_order (this->encoder,
 592                            g_value_get_uint (value));
 593       break;
 594     case ARG_QLP_COEFF_PRECISION:
 595       FLAC__seekable_stream_encoder_set_qlp_coeff_precision (this->encoder,
 596                            g_value_get_uint (value));
 597       break;
 598     case ARG_QLP_COEFF_PREC_SEARCH:
 599       FLAC__seekable_stream_encoder_set_do_qlp_coeff_prec_search (this->encoder,
 600                            g_value_get_boolean (value));
 601       break;
 602     case ARG_ESCAPE_CODING:
 603       FLAC__seekable_stream_encoder_set_do_escape_coding (this->encoder,
 604                            g_value_get_boolean (value));
 605       break;
 606     case ARG_EXHAUSTIVE_MODEL_SEARCH:
 607       FLAC__seekable_stream_encoder_set_do_exhaustive_model_search (this->encoder,
 608                            g_value_get_boolean (value));
 609       break;
 610     case ARG_MIN_RESIDUAL_PARTITION_ORDER:
 611       FLAC__seekable_stream_encoder_set_min_residual_partition_order (this->encoder,
 612                            g_value_get_uint (value));
 613       break;
 614     case ARG_MAX_RESIDUAL_PARTITION_ORDER:
 615       FLAC__seekable_stream_encoder_set_max_residual_partition_order (this->encoder,
 616                            g_value_get_uint (value));
 617       break;
 618     case ARG_RICE_PARAMETER_SEARCH_DIST:
 619       FLAC__seekable_stream_encoder_set_rice_parameter_search_dist (this->encoder,
 620                                                  g_value_get_uint (value));
 621       break;
 622     default:
 623       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 624       return;
 625   }
 626 }
 627
 628 static void
 629 gst_flacenc_get_property (GObject *object, guint prop_id,
 630                           GValue *value, GParamSpec *pspec)
 631 {
 632   FlacEnc *this;
 633
 634   this = (FlacEnc *)object;
 635
 636   switch (prop_id) {
 637     case ARG_QUALITY:
 638       g_value_set_enum (value, this->quality);
 639       break;
 640     case ARG_STREAMABLE_SUBSET:
 641       g_value_set_boolean (value,
 642               FLAC__seekable_stream_encoder_get_streamable_subset (this->encoder));
 643       break;
 644     case ARG_MID_SIDE_STEREO:
 645       g_value_set_boolean (value,
 646               FLAC__seekable_stream_encoder_get_do_mid_side_stereo (this->encoder));
 647       break;
 648     case ARG_LOOSE_MID_SIDE_STEREO:
 649       g_value_set_boolean (value,
 650               FLAC__seekable_stream_encoder_get_loose_mid_side_stereo (this->encoder));
 651       break;
 652     case ARG_BLOCKSIZE:
 653       g_value_set_uint (value,
 654               FLAC__seekable_stream_encoder_get_blocksize (this->encoder));
 655       break;
 656     case ARG_MAX_LPC_ORDER:
 657       g_value_set_uint (value,
 658               FLAC__seekable_stream_encoder_get_max_lpc_order (this->encoder));
 659       break;
 660     case ARG_QLP_COEFF_PRECISION:
 661       g_value_set_uint (value,
 662               FLAC__seekable_stream_encoder_get_qlp_coeff_precision (this->encoder));
 663       break;
 664     case ARG_QLP_COEFF_PREC_SEARCH:
 665       g_value_set_boolean (value,
 666               FLAC__seekable_stream_encoder_get_do_qlp_coeff_prec_search (this->encoder));
 667       break;
 668     case ARG_ESCAPE_CODING:
 669       g_value_set_boolean (value,
 670               FLAC__seekable_stream_encoder_get_do_escape_coding (this->encoder));
 671       break;
 672     case ARG_EXHAUSTIVE_MODEL_SEARCH:
 673       g_value_set_boolean (value,
 674               FLAC__seekable_stream_encoder_get_do_exhaustive_model_search (this->encoder));
 675       break;
 676     case ARG_MIN_RESIDUAL_PARTITION_ORDER:
 677       g_value_set_uint (value,
 678               FLAC__seekable_stream_encoder_get_min_residual_partition_order (this->encoder));
 679       break;
 680     case ARG_MAX_RESIDUAL_PARTITION_ORDER:
 681       g_value_set_uint (value,
 682               FLAC__seekable_stream_encoder_get_max_residual_partition_order (this->encoder));
 683       break;
 684     case ARG_RICE_PARAMETER_SEARCH_DIST:
 685       g_value_set_uint (value,
 686               FLAC__seekable_stream_encoder_get_rice_parameter_search_dist (this->encoder));
 687       break;
 688     default:
 689       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 690       break;
 691   }
 692 }
 693
 694 static GstElementStateReturn
 695 gst_flacenc_change_state (GstElement *element)
 696 {
 697   FlacEnc *flacenc = GST_FLACENC (element);
 698
 699   switch (GST_STATE_TRANSITION (element)) {
 700     case GST_STATE_NULL_TO_READY:
 701     case GST_STATE_READY_TO_PAUSED:
 702       flacenc->first = TRUE;
 703       flacenc->stopped = FALSE;
 704       break;
 705     case GST_STATE_PAUSED_TO_PLAYING:
 706     case GST_STATE_PLAYING_TO_PAUSED:
 707       break;
 708     case GST_STATE_PAUSED_TO_READY:
 709       if (FLAC__seekable_stream_encoder_get_state (flacenc->encoder) !=
 710                         FLAC__STREAM_ENCODER_UNINITIALIZED) {
 711         flacenc->stopped = TRUE;
 712         FLAC__seekable_stream_encoder_finish (flacenc->encoder);
 713       }
 714       flacenc->negotiated = FALSE;
 715       if (flacenc->first_buf)
 716         gst_buffer_unref (flacenc->first_buf);
 717       flacenc->first_buf = NULL;
 718       g_free (flacenc->data);
 719       flacenc->data = NULL;
 720       FLAC__metadata_object_delete (flacenc->meta[0]);
 721       g_free (flacenc->meta);
 722       break;
 723     case GST_STATE_READY_TO_NULL:
 724     default:
 725       break;
 726   }
 727
 728   if (GST_ELEMENT_CLASS (parent_class)->change_state)
 729     return GST_ELEMENT_CLASS (parent_class)->change_state (element);
 730
 731   return GST_STATE_SUCCESS;
 732 }