2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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.
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.
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.
21 * - we assume timestamps start from 0 and that we get a perfect stream; we
22 * don't handle non-zero starts and mid-stream discontinuities, esp. not if
23 * we're muxing into ogg
32 #include <gstflacenc.h>
33 #include <gst/audio/audio.h>
34 #include <gst/tag/tag.h>
35 #include <gst/gsttagsetter.h>
38 static const GstElementDetails flacenc_details =
39 GST_ELEMENT_DETAILS ("FLAC audio encoder",
40 "Codec/Encoder/Audio",
41 "Encodes audio with the FLAC lossless audio encoder",
42 "Wim Taymans <wim.taymans@chello.be>");
44 #define FLAC_SINK_CAPS \
46 "endianness = (int) BYTE_ORDER, " \
47 "signed = (boolean) TRUE, " \
48 "width = (int) 16, " \
49 "depth = (int) 16, " \
50 "rate = (int) [ 8000, 48000 ], " \
51 "channels = (int) [ 1, 2 ]"
53 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
56 GST_STATIC_CAPS ("audio/x-flac")
59 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
62 GST_STATIC_CAPS (FLAC_SINK_CAPS)
69 PROP_STREAMABLE_SUBSET,
71 PROP_LOOSE_MID_SIDE_STEREO,
74 PROP_QLP_COEFF_PRECISION,
75 PROP_QLP_COEFF_PREC_SEARCH,
77 PROP_EXHAUSTIVE_MODEL_SEARCH,
78 PROP_MIN_RESIDUAL_PARTITION_ORDER,
79 PROP_MAX_RESIDUAL_PARTITION_ORDER,
80 PROP_RICE_PARAMETER_SEARCH_DIST
83 GST_DEBUG_CATEGORY_STATIC (flacenc_debug);
84 #define GST_CAT_DEFAULT flacenc_debug
87 #define _do_init(type) \
89 static const GInterfaceInfo tag_setter_info = { \
94 g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, \
98 GST_BOILERPLATE_FULL (GstFlacEnc, gst_flac_enc, GstElement, GST_TYPE_ELEMENT,
101 static void gst_flac_enc_finalize (GObject * object);
103 static gboolean gst_flac_enc_sink_setcaps (GstPad * pad, GstCaps * caps);
104 static gboolean gst_flac_enc_sink_event (GstPad * pad, GstEvent * event);
105 static GstFlowReturn gst_flac_enc_chain (GstPad * pad, GstBuffer * buffer);
107 static gboolean gst_flac_enc_update_quality (GstFlacEnc * flacenc,
109 static void gst_flac_enc_set_property (GObject * object, guint prop_id,
110 const GValue * value, GParamSpec * pspec);
111 static void gst_flac_enc_get_property (GObject * object, guint prop_id,
112 GValue * value, GParamSpec * pspec);
113 static GstStateChangeReturn gst_flac_enc_change_state (GstElement * element,
114 GstStateChange transition);
116 static FLAC__StreamEncoderWriteStatus
117 gst_flac_enc_write_callback (const FLAC__SeekableStreamEncoder * encoder,
118 const FLAC__byte buffer[], unsigned bytes,
119 unsigned samples, unsigned current_frame, void *client_data);
120 static FLAC__SeekableStreamEncoderSeekStatus
121 gst_flac_enc_seek_callback (const FLAC__SeekableStreamEncoder * encoder,
122 FLAC__uint64 absolute_byte_offset, void *client_data);
123 static FLAC__SeekableStreamEncoderTellStatus
124 gst_flac_enc_tell_callback (const FLAC__SeekableStreamEncoder * encoder,
125 FLAC__uint64 * absolute_byte_offset, void *client_data);
129 gboolean exhaustive_model_search;
130 gboolean escape_coding;
132 gboolean loose_mid_side;
133 guint qlp_coeff_precision;
134 gboolean qlp_coeff_prec_search;
135 guint min_residual_partition_order;
136 guint max_residual_partition_order;
137 guint rice_parameter_search_dist;
143 static const GstFlacEncParams flacenc_params[] = {
144 {FALSE, FALSE, FALSE, FALSE, 0, FALSE, 2, 2, 0, 0, 1152},
145 {FALSE, FALSE, TRUE, TRUE, 0, FALSE, 2, 2, 0, 0, 1152},
146 {FALSE, FALSE, TRUE, FALSE, 0, FALSE, 0, 3, 0, 0, 1152},
147 {FALSE, FALSE, FALSE, FALSE, 0, FALSE, 3, 3, 0, 6, 4608},
148 {FALSE, FALSE, TRUE, TRUE, 0, FALSE, 3, 3, 0, 8, 4608},
149 {FALSE, FALSE, TRUE, FALSE, 0, FALSE, 3, 3, 0, 8, 4608},
150 {FALSE, FALSE, TRUE, FALSE, 0, FALSE, 0, 4, 0, 8, 4608},
151 {TRUE, FALSE, TRUE, FALSE, 0, FALSE, 0, 6, 0, 8, 4608},
152 {TRUE, FALSE, TRUE, FALSE, 0, FALSE, 0, 6, 0, 12, 4608},
153 {TRUE, TRUE, TRUE, FALSE, 0, FALSE, 0, 16, 0, 32, 4608},
156 #define DEFAULT_QUALITY 5
158 #define GST_TYPE_FLAC_ENC_QUALITY (gst_flac_enc_quality_get_type ())
160 gst_flac_enc_quality_get_type (void)
162 static GType qtype = 0;
165 static const GEnumValue values[] = {
166 {0, "0 - Fastest compression", "0"},
171 {5, "5 - Default", "5"},
174 {8, "8 - Highest compression", "8"},
175 {9, "9 - Insane", "9"},
179 qtype = g_enum_register_static ("GstFlacEncQuality", values);
185 gst_flac_enc_base_init (gpointer g_class)
187 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
189 gst_element_class_add_pad_template (element_class,
190 gst_static_pad_template_get (&src_factory));
191 gst_element_class_add_pad_template (element_class,
192 gst_static_pad_template_get (&sink_factory));
194 gst_element_class_set_details (element_class, &flacenc_details);
196 GST_DEBUG_CATEGORY_INIT (flacenc_debug, "flacenc", 0,
197 "Flac encoding element");
201 gst_flac_enc_class_init (GstFlacEncClass * klass)
203 GObjectClass *gobject_class;
204 GstElementClass *gstelement_class;
206 gobject_class = (GObjectClass *) klass;
207 gstelement_class = (GstElementClass *) klass;
209 gobject_class->set_property = gst_flac_enc_set_property;
210 gobject_class->get_property = gst_flac_enc_get_property;
211 gobject_class->finalize = gst_flac_enc_finalize;
213 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_QUALITY,
214 g_param_spec_enum ("quality",
216 "Speed versus compression tradeoff",
217 GST_TYPE_FLAC_ENC_QUALITY, DEFAULT_QUALITY, G_PARAM_READWRITE));
218 g_object_class_install_property (G_OBJECT_CLASS (klass),
219 PROP_STREAMABLE_SUBSET, g_param_spec_boolean ("streamable_subset",
221 "true to limit encoder to generating a Subset stream, else false",
222 TRUE, G_PARAM_READWRITE));
223 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MID_SIDE_STEREO,
224 g_param_spec_boolean ("mid_side_stereo", "Do mid side stereo",
225 "Do mid side stereo (only for stereo input)",
226 flacenc_params[DEFAULT_QUALITY].mid_side, G_PARAM_READWRITE));
227 g_object_class_install_property (G_OBJECT_CLASS (klass),
228 PROP_LOOSE_MID_SIDE_STEREO, g_param_spec_boolean ("loose_mid_side_stereo",
229 "Loose mid side stereo", "Loose mid side stereo",
230 flacenc_params[DEFAULT_QUALITY].loose_mid_side, G_PARAM_READWRITE));
231 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BLOCKSIZE,
232 g_param_spec_uint ("blocksize", "Blocksize", "Blocksize in samples",
233 FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE,
234 flacenc_params[DEFAULT_QUALITY].blocksize, G_PARAM_READWRITE));
235 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_LPC_ORDER,
236 g_param_spec_uint ("max_lpc_order", "Max LPC order",
237 "Max LPC order; 0 => use only fixed predictors", 0,
238 FLAC__MAX_LPC_ORDER, flacenc_params[DEFAULT_QUALITY].max_lpc_order,
240 g_object_class_install_property (G_OBJECT_CLASS (klass),
241 PROP_QLP_COEFF_PRECISION, g_param_spec_uint ("qlp_coeff_precision",
242 "QLP coefficients precision",
243 "Precision in bits of quantized linear-predictor coefficients; 0 = automatic",
244 0, 32, flacenc_params[DEFAULT_QUALITY].qlp_coeff_precision,
246 g_object_class_install_property (G_OBJECT_CLASS (klass),
247 PROP_QLP_COEFF_PREC_SEARCH, g_param_spec_boolean ("qlp_coeff_prec_search",
248 "Do QLP coefficients precision search",
249 "false = use qlp_coeff_precision, "
250 "true = search around qlp_coeff_precision, take best",
251 flacenc_params[DEFAULT_QUALITY].qlp_coeff_prec_search,
253 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ESCAPE_CODING,
254 g_param_spec_boolean ("escape_coding", "Do Escape coding",
255 "search for escape codes in the entropy coding stage "
256 "for slightly better compression",
257 flacenc_params[DEFAULT_QUALITY].escape_coding, G_PARAM_READWRITE));
258 g_object_class_install_property (G_OBJECT_CLASS (klass),
259 PROP_EXHAUSTIVE_MODEL_SEARCH,
260 g_param_spec_boolean ("exhaustive_model_search",
261 "Do exhaustive model search",
262 "do exhaustive search of LP coefficient quantization (expensive!)",
263 flacenc_params[DEFAULT_QUALITY].exhaustive_model_search,
265 g_object_class_install_property (G_OBJECT_CLASS (klass),
266 PROP_MIN_RESIDUAL_PARTITION_ORDER,
267 g_param_spec_uint ("min_residual_partition_order",
268 "Min residual partition order",
269 "Min residual partition order (above 4 doesn't usually help much)", 0,
270 16, flacenc_params[DEFAULT_QUALITY].min_residual_partition_order,
272 g_object_class_install_property (G_OBJECT_CLASS (klass),
273 PROP_MAX_RESIDUAL_PARTITION_ORDER,
274 g_param_spec_uint ("max_residual_partition_order",
275 "Max residual partition order",
276 "Max residual partition order (above 4 doesn't usually help much)", 0,
277 16, flacenc_params[DEFAULT_QUALITY].max_residual_partition_order,
279 g_object_class_install_property (G_OBJECT_CLASS (klass),
280 PROP_RICE_PARAMETER_SEARCH_DIST,
281 g_param_spec_uint ("rice_parameter_search_dist",
282 "rice_parameter_search_dist",
283 "0 = try only calc'd parameter k; else try all [k-dist..k+dist] "
284 "parameters, use best", 0, FLAC__MAX_RICE_PARTITION_ORDER,
285 flacenc_params[DEFAULT_QUALITY].rice_parameter_search_dist,
288 gstelement_class->change_state = gst_flac_enc_change_state;
292 gst_flac_enc_init (GstFlacEnc * flacenc, GstFlacEncClass * klass)
294 GstElementClass *eclass = GST_ELEMENT_CLASS (klass);
297 gst_pad_new_from_template (gst_element_class_get_pad_template (eclass,
299 gst_element_add_pad (GST_ELEMENT (flacenc), flacenc->sinkpad);
300 gst_pad_set_chain_function (flacenc->sinkpad, gst_flac_enc_chain);
301 gst_pad_set_event_function (flacenc->sinkpad, gst_flac_enc_sink_event);
302 gst_pad_set_setcaps_function (flacenc->sinkpad, gst_flac_enc_sink_setcaps);
305 gst_pad_new_from_template (gst_element_class_get_pad_template (eclass,
307 gst_pad_use_fixed_caps (flacenc->srcpad);
308 gst_element_add_pad (GST_ELEMENT (flacenc), flacenc->srcpad);
310 flacenc->encoder = FLAC__seekable_stream_encoder_new ();
313 flacenc->samples_written = 0;
314 gst_flac_enc_update_quality (flacenc, DEFAULT_QUALITY);
315 flacenc->tags = gst_tag_list_new ();
316 flacenc->got_headers = FALSE;
317 flacenc->headers = NULL;
321 gst_flac_enc_finalize (GObject * object)
323 GstFlacEnc *flacenc = GST_FLAC_ENC (object);
325 gst_tag_list_free (flacenc->tags);
326 FLAC__seekable_stream_encoder_delete (flacenc->encoder);
328 G_OBJECT_CLASS (parent_class)->finalize (object);
332 add_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
336 GstFlacEnc *flacenc = GST_FLAC_ENC (user_data);
338 comments = gst_tag_to_vorbis_comments (list, tag);
339 for (it = comments; it != NULL; it = it->next) {
340 FLAC__StreamMetadata_VorbisComment_Entry commment_entry;
342 commment_entry.length = strlen (it->data);
343 commment_entry.entry = it->data;
344 FLAC__metadata_object_vorbiscomment_insert_comment (flacenc->meta[0],
345 flacenc->meta[0]->data.vorbis_comment.num_comments,
346 commment_entry, TRUE);
349 g_list_free (comments);
353 gst_flac_enc_set_metadata (GstFlacEnc * flacenc)
355 const GstTagList *user_tags;
358 g_return_if_fail (flacenc != NULL);
359 user_tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (flacenc));
360 if ((flacenc->tags == NULL) && (user_tags == NULL)) {
363 copy = gst_tag_list_merge (user_tags, flacenc->tags,
364 gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (flacenc)));
365 flacenc->meta = g_malloc (sizeof (FLAC__StreamMetadata **));
368 FLAC__metadata_object_new (FLAC__METADATA_TYPE_VORBIS_COMMENT);
369 gst_tag_list_foreach (copy, add_one_tag, flacenc);
371 if (FLAC__seekable_stream_encoder_set_metadata (flacenc->encoder,
372 flacenc->meta, 1) != true)
373 g_warning ("Dude, i'm already initialized!");
374 gst_tag_list_free (copy);
378 gst_flac_enc_sink_setcaps (GstPad * pad, GstCaps * caps)
381 GstStructure *structure;
382 FLAC__SeekableStreamEncoderState state;
383 gint depth, chans, rate, width;
385 flacenc = GST_FLAC_ENC (gst_pad_get_parent (pad));
387 if (FLAC__seekable_stream_encoder_get_state (flacenc->encoder) !=
388 FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
389 goto encoder_already_initialized;
391 structure = gst_caps_get_structure (caps, 0);
393 if (!gst_structure_get_int (structure, "channels", &chans) ||
394 !gst_structure_get_int (structure, "width", &width) ||
395 !gst_structure_get_int (structure, "depth", &depth) ||
396 !gst_structure_get_int (structure, "rate", &rate)) {
397 GST_DEBUG_OBJECT (flacenc, "incomplete caps: %" GST_PTR_FORMAT, caps);
401 flacenc->channels = chans;
402 flacenc->depth = depth;
403 flacenc->sample_rate = rate;
405 caps = gst_caps_new_simple ("audio/x-flac",
406 "channels", G_TYPE_INT, flacenc->channels,
407 "rate", G_TYPE_INT, flacenc->sample_rate, NULL);
409 if (!gst_pad_set_caps (flacenc->srcpad, caps))
410 goto setting_src_caps_failed;
412 gst_caps_unref (caps);
414 FLAC__seekable_stream_encoder_set_bits_per_sample (flacenc->encoder,
416 FLAC__seekable_stream_encoder_set_sample_rate (flacenc->encoder,
417 flacenc->sample_rate);
418 FLAC__seekable_stream_encoder_set_channels (flacenc->encoder,
421 FLAC__seekable_stream_encoder_set_write_callback (flacenc->encoder,
422 gst_flac_enc_write_callback);
423 FLAC__seekable_stream_encoder_set_seek_callback (flacenc->encoder,
424 gst_flac_enc_seek_callback);
425 FLAC__seekable_stream_encoder_set_tell_callback (flacenc->encoder,
426 gst_flac_enc_tell_callback);
428 FLAC__seekable_stream_encoder_set_client_data (flacenc->encoder, flacenc);
430 gst_flac_enc_set_metadata (flacenc);
432 state = FLAC__seekable_stream_encoder_init (flacenc->encoder);
433 if (state != FLAC__STREAM_ENCODER_OK)
434 goto failed_to_initialize;
436 gst_object_unref (flacenc);
440 encoder_already_initialized:
442 g_warning ("flac already initialized -- fixme allow this");
443 gst_object_unref (flacenc);
446 setting_src_caps_failed:
448 GST_DEBUG_OBJECT (flacenc,
449 "Couldn't set caps on source pad: %" GST_PTR_FORMAT, caps);
450 gst_caps_unref (caps);
451 gst_object_unref (flacenc);
454 failed_to_initialize:
456 GST_ELEMENT_ERROR (flacenc, LIBRARY, INIT, (NULL),
457 ("could not initialize encoder (wrong parameters?)"));
458 gst_object_unref (flacenc);
464 gst_flac_enc_update_quality (GstFlacEnc * flacenc, gint quality)
466 flacenc->quality = quality;
468 #define DO_UPDATE(name, val, str) \
470 if (FLAC__seekable_stream_encoder_get_##name (flacenc->encoder) != \
471 flacenc_params[quality].val) { \
472 FLAC__seekable_stream_encoder_set_##name (flacenc->encoder, \
473 flacenc_params[quality].val); \
474 g_object_notify (G_OBJECT (flacenc), str); \
478 g_object_freeze_notify (G_OBJECT (flacenc));
480 if (flacenc->channels == 2) {
481 DO_UPDATE (do_mid_side_stereo, mid_side, "mid_side_stereo");
482 DO_UPDATE (loose_mid_side_stereo, loose_mid_side, "loose_mid_side");
485 DO_UPDATE (blocksize, blocksize, "blocksize");
486 DO_UPDATE (max_lpc_order, max_lpc_order, "max_lpc_order");
487 DO_UPDATE (qlp_coeff_precision, qlp_coeff_precision, "qlp_coeff_precision");
488 DO_UPDATE (do_qlp_coeff_prec_search, qlp_coeff_prec_search,
489 "qlp_coeff_prec_search");
490 DO_UPDATE (do_escape_coding, escape_coding, "escape_coding");
491 DO_UPDATE (do_exhaustive_model_search, exhaustive_model_search,
492 "exhaustive_model_search");
493 DO_UPDATE (min_residual_partition_order, min_residual_partition_order,
494 "min_residual_partition_order");
495 DO_UPDATE (max_residual_partition_order, max_residual_partition_order,
496 "max_residual_partition_order");
497 DO_UPDATE (rice_parameter_search_dist, rice_parameter_search_dist,
498 "rice_parameter_search_dist");
502 g_object_thaw_notify (G_OBJECT (flacenc));
507 static FLAC__SeekableStreamEncoderSeekStatus
508 gst_flac_enc_seek_callback (const FLAC__SeekableStreamEncoder * encoder,
509 FLAC__uint64 absolute_byte_offset, void *client_data)
515 flacenc = GST_FLAC_ENC (client_data);
517 if (flacenc->stopped)
518 return FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK;
520 event = gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_BYTES,
521 absolute_byte_offset, GST_BUFFER_OFFSET_NONE, 0);
523 if ((peerpad = gst_pad_get_peer (flacenc->srcpad))) {
524 gboolean ret = gst_pad_send_event (peerpad, event);
526 gst_object_unref (peerpad);
529 GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " %s", absolute_byte_offset,
532 GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " %s", absolute_byte_offset,
536 GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " failed (no peer pad)",
537 absolute_byte_offset);
540 flacenc->offset = absolute_byte_offset;
542 return FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK;
546 notgst_value_array_append_buffer (GValue * array_val, GstBuffer * buf)
548 GValue value = { 0, };
550 g_value_init (&value, GST_TYPE_BUFFER);
551 /* copy buffer to avoid problems with circular refcounts */
552 buf = gst_buffer_copy (buf);
553 /* again, for good measure */
554 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
555 gst_value_set_buffer (&value, buf);
556 gst_buffer_unref (buf);
557 gst_value_array_append_value (array_val, &value);
558 g_value_unset (&value);
561 #define HDR_TYPE_STREAMINFO 0
562 #define HDR_TYPE_VORBISCOMMENT 4
565 gst_flac_enc_process_stream_headers (GstFlacEnc * enc)
567 GstBuffer *vorbiscomment = NULL;
568 GstBuffer *streaminfo = NULL;
569 GstBuffer *marker = NULL;
570 GValue array = { 0, };
574 caps = gst_caps_new_simple ("audio/x-flac",
575 "channels", G_TYPE_INT, enc->channels,
576 "rate", G_TYPE_INT, enc->sample_rate, NULL);
578 for (l = enc->headers; l != NULL; l = l->next) {
582 /* mark buffers so oggmux will ignore them if it already muxed the
583 * header buffers from the streamheaders field in the caps */
584 l->data = gst_buffer_make_metadata_writable (GST_BUFFER (l->data));
585 GST_BUFFER_FLAG_SET (GST_BUFFER (l->data), GST_BUFFER_FLAG_IN_CAPS);
587 data = GST_BUFFER_DATA (GST_BUFFER_CAST (l->data));
588 size = GST_BUFFER_SIZE (GST_BUFFER_CAST (l->data));
590 /* find initial 4-byte marker which we need to skip later on */
591 if (size == 4 && memcmp (data, "fLaC", 4) == 0) {
592 marker = GST_BUFFER_CAST (l->data);
593 } else if (size > 1 && (data[0] & 0x7f) == HDR_TYPE_STREAMINFO) {
594 streaminfo = GST_BUFFER_CAST (l->data);
595 } else if (size > 1 && (data[0] & 0x7f) == HDR_TYPE_VORBISCOMMENT) {
596 vorbiscomment = GST_BUFFER_CAST (l->data);
600 if (marker == NULL || streaminfo == NULL || vorbiscomment == NULL) {
601 GST_WARNING_OBJECT (enc, "missing header %p %p %p, muxing into container "
602 "formats may be broken", marker, streaminfo, vorbiscomment);
606 g_value_init (&array, GST_TYPE_ARRAY);
608 /* add marker including STREAMINFO header */
613 /* minus one for the marker that is merged with streaminfo here */
614 num = g_list_length (enc->headers) - 1;
616 buf = gst_buffer_new_and_alloc (13 + GST_BUFFER_SIZE (streaminfo));
617 GST_BUFFER_DATA (buf)[0] = 0x7f;
618 memcpy (GST_BUFFER_DATA (buf) + 1, "FLAC", 4);
619 GST_BUFFER_DATA (buf)[5] = 0x01; /* mapping version major */
620 GST_BUFFER_DATA (buf)[6] = 0x00; /* mapping version minor */
621 GST_BUFFER_DATA (buf)[7] = (num & 0xFF00) >> 8;
622 GST_BUFFER_DATA (buf)[8] = (num & 0x00FF) >> 0;
623 memcpy (GST_BUFFER_DATA (buf) + 9, "fLaC", 4);
624 memcpy (GST_BUFFER_DATA (buf) + 13, GST_BUFFER_DATA (streaminfo),
625 GST_BUFFER_SIZE (streaminfo));
626 notgst_value_array_append_buffer (&array, buf);
627 gst_buffer_unref (buf);
630 /* add VORBISCOMMENT header */
631 notgst_value_array_append_buffer (&array, vorbiscomment);
633 /* add other headers, if there are any */
634 for (l = enc->headers; l != NULL; l = l->next) {
635 if (GST_BUFFER_CAST (l->data) != marker &&
636 GST_BUFFER_CAST (l->data) != streaminfo &&
637 GST_BUFFER_CAST (l->data) != vorbiscomment) {
638 notgst_value_array_append_buffer (&array, GST_BUFFER_CAST (l->data));
642 gst_structure_set_value (gst_caps_get_structure (caps, 0),
643 "streamheader", &array);
644 g_value_unset (&array);
648 gst_pad_set_caps (enc->srcpad, caps);
650 /* push header buffers; update caps, so when we push the first buffer the
651 * negotiated caps will change to caps that include the streamheader field */
652 for (l = enc->headers; l != NULL; l = l->next) {
655 buf = GST_BUFFER (l->data);
656 gst_buffer_set_caps (buf, caps);
657 GST_LOG ("Pushing header buffer, size %u bytes", GST_BUFFER_SIZE (buf));
658 (void) gst_pad_push (enc->srcpad, buf);
661 g_list_free (enc->headers);
664 gst_caps_unref (caps);
667 static FLAC__StreamEncoderWriteStatus
668 gst_flac_enc_write_callback (const FLAC__SeekableStreamEncoder * encoder,
669 const FLAC__byte buffer[], unsigned bytes,
670 unsigned samples, unsigned current_frame, void *client_data)
672 GstFlowReturn ret = GST_FLOW_OK;
676 flacenc = GST_FLAC_ENC (client_data);
678 if (flacenc->stopped)
679 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
681 outbuf = gst_buffer_new_and_alloc (bytes);
682 memcpy (GST_BUFFER_DATA (outbuf), buffer, bytes);
684 if (samples > 0 && flacenc->samples_written != (guint64) - 1) {
687 GST_BUFFER_TIMESTAMP (outbuf) =
688 GST_FRAMES_TO_CLOCK_TIME (flacenc->samples_written,
689 flacenc->sample_rate);
690 GST_BUFFER_DURATION (outbuf) =
691 GST_FRAMES_TO_CLOCK_TIME (samples, flacenc->sample_rate);
692 /* offset_end = granulepos for ogg muxer */
693 granulepos = flacenc->samples_written + samples;
694 GST_BUFFER_OFFSET_END (outbuf) = granulepos;
695 /* offset = timestamp corresponding to granulepos for ogg muxer
696 * (see vorbisenc for a much more elaborate version of this) */
697 GST_BUFFER_OFFSET (outbuf) =
698 GST_FRAMES_TO_CLOCK_TIME (granulepos, flacenc->sample_rate);
700 GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
701 GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
704 /* we assume libflac passes us stuff neatly framed */
705 if (!flacenc->got_headers) {
707 GST_DEBUG_OBJECT (flacenc, "Got header, queueing (%u bytes)", bytes);
708 flacenc->headers = g_list_append (flacenc->headers, outbuf);
709 /* note: it's important that we increase our byte offset */
712 GST_INFO_OBJECT (flacenc, "Non-header packet, we have all headers now");
713 gst_flac_enc_process_stream_headers (flacenc);
714 flacenc->got_headers = TRUE;
718 GST_LOG ("Pushing buffer: ts=%" GST_TIME_FORMAT ", samples=%u, size=%u, "
719 "pos=%" G_GUINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
720 samples, bytes, flacenc->offset);
722 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (flacenc->srcpad));
723 ret = gst_pad_push (flacenc->srcpad, outbuf);
727 flacenc->offset += bytes;
728 flacenc->samples_written += samples;
730 if (GST_FLOW_IS_FATAL (ret))
731 return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
733 return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
736 static FLAC__SeekableStreamEncoderTellStatus
737 gst_flac_enc_tell_callback (const FLAC__SeekableStreamEncoder * encoder,
738 FLAC__uint64 * absolute_byte_offset, void *client_data)
740 GstFlacEnc *flacenc = GST_FLAC_ENC (client_data);
742 *absolute_byte_offset = flacenc->offset;
744 return FLAC__SEEKABLE_STREAM_ENCODER_TELL_STATUS_OK;
748 gst_flac_enc_sink_event (GstPad * pad, GstEvent * event)
754 flacenc = GST_FLAC_ENC (gst_pad_get_parent (pad));
756 GST_DEBUG ("Received %s event on sinkpad", GST_EVENT_TYPE_NAME (event));
758 switch (GST_EVENT_TYPE (event)) {
759 case GST_EVENT_NEWSEGMENT:{
761 gint64 start, stream_time;
763 if (flacenc->offset == 0) {
764 gst_event_parse_new_segment (event, NULL, NULL, &format, &start, NULL,
770 if (flacenc->offset > 0)
771 GST_DEBUG ("Not handling mid-stream newsegment event");
773 GST_DEBUG ("Not handling newsegment event with non-zero start");
775 GstEvent *e = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
778 ret = gst_pad_push_event (flacenc->srcpad, e);
780 if (stream_time != 0) {
781 GST_DEBUG ("Not handling non-zero stream time");
783 gst_event_unref (event);
784 /* don't push it downstream, we'll generate our own via seek to 0 */
788 FLAC__seekable_stream_encoder_finish (flacenc->encoder);
789 ret = gst_pad_event_default (pad, event);
793 gst_event_parse_tag (event, &taglist);
794 gst_tag_list_insert (flacenc->tags, taglist, GST_TAG_MERGE_REPLACE);
796 g_assert_not_reached ();
798 ret = gst_pad_event_default (pad, event);
801 ret = gst_pad_event_default (pad, event);
805 gst_object_unref (flacenc);
811 gst_flac_enc_chain (GstPad * pad, GstBuffer * buffer)
820 flacenc = GST_FLAC_ENC (GST_PAD_PARENT (pad));
822 /* make sure setcaps has been called and the encoder is set up */
823 if (G_UNLIKELY (flacenc->depth == 0))
824 return GST_FLOW_NOT_NEGOTIATED;
826 depth = flacenc->depth;
828 insize = GST_BUFFER_SIZE (buffer);
829 samples = insize / ((depth + 7) >> 3);
831 data = g_malloc (samples * sizeof (FLAC__int32));
834 gint8 *indata = (gint8 *) GST_BUFFER_DATA (buffer);
836 for (i = 0; i < samples; i++)
837 data[i] = (FLAC__int32) indata[i];
838 } else if (depth == 16) {
839 gint16 *indata = (gint16 *) GST_BUFFER_DATA (buffer);
841 for (i = 0; i < samples; i++)
842 data[i] = (FLAC__int32) indata[i];
844 g_assert_not_reached ();
847 gst_buffer_unref (buffer);
849 res = FLAC__seekable_stream_encoder_process_interleaved (flacenc->encoder,
850 (const FLAC__int32 *) data, samples / flacenc->channels);
857 return GST_FLOW_ERROR;
861 gst_flac_enc_set_property (GObject * object, guint prop_id,
862 const GValue * value, GParamSpec * pspec)
864 GstFlacEnc *this = GST_FLAC_ENC (object);
866 GST_OBJECT_LOCK (this);
870 gst_flac_enc_update_quality (this, g_value_get_enum (value));
872 case PROP_STREAMABLE_SUBSET:
873 FLAC__seekable_stream_encoder_set_streamable_subset (this->encoder,
874 g_value_get_boolean (value));
876 case PROP_MID_SIDE_STEREO:
877 FLAC__seekable_stream_encoder_set_do_mid_side_stereo (this->encoder,
878 g_value_get_boolean (value));
880 case PROP_LOOSE_MID_SIDE_STEREO:
881 FLAC__seekable_stream_encoder_set_loose_mid_side_stereo (this->encoder,
882 g_value_get_boolean (value));
885 FLAC__seekable_stream_encoder_set_blocksize (this->encoder,
886 g_value_get_uint (value));
888 case PROP_MAX_LPC_ORDER:
889 FLAC__seekable_stream_encoder_set_max_lpc_order (this->encoder,
890 g_value_get_uint (value));
892 case PROP_QLP_COEFF_PRECISION:
893 FLAC__seekable_stream_encoder_set_qlp_coeff_precision (this->encoder,
894 g_value_get_uint (value));
896 case PROP_QLP_COEFF_PREC_SEARCH:
897 FLAC__seekable_stream_encoder_set_do_qlp_coeff_prec_search (this->encoder,
898 g_value_get_boolean (value));
900 case PROP_ESCAPE_CODING:
901 FLAC__seekable_stream_encoder_set_do_escape_coding (this->encoder,
902 g_value_get_boolean (value));
904 case PROP_EXHAUSTIVE_MODEL_SEARCH:
905 FLAC__seekable_stream_encoder_set_do_exhaustive_model_search (this->
906 encoder, g_value_get_boolean (value));
908 case PROP_MIN_RESIDUAL_PARTITION_ORDER:
909 FLAC__seekable_stream_encoder_set_min_residual_partition_order (this->
910 encoder, g_value_get_uint (value));
912 case PROP_MAX_RESIDUAL_PARTITION_ORDER:
913 FLAC__seekable_stream_encoder_set_max_residual_partition_order (this->
914 encoder, g_value_get_uint (value));
916 case PROP_RICE_PARAMETER_SEARCH_DIST:
917 FLAC__seekable_stream_encoder_set_rice_parameter_search_dist (this->
918 encoder, g_value_get_uint (value));
921 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
925 GST_OBJECT_UNLOCK (this);
929 gst_flac_enc_get_property (GObject * object, guint prop_id,
930 GValue * value, GParamSpec * pspec)
932 GstFlacEnc *this = GST_FLAC_ENC (object);
934 GST_OBJECT_LOCK (this);
938 g_value_set_enum (value, this->quality);
940 case PROP_STREAMABLE_SUBSET:
941 g_value_set_boolean (value,
942 FLAC__seekable_stream_encoder_get_streamable_subset (this->encoder));
944 case PROP_MID_SIDE_STEREO:
945 g_value_set_boolean (value,
946 FLAC__seekable_stream_encoder_get_do_mid_side_stereo (this->encoder));
948 case PROP_LOOSE_MID_SIDE_STEREO:
949 g_value_set_boolean (value,
950 FLAC__seekable_stream_encoder_get_loose_mid_side_stereo (this->
954 g_value_set_uint (value,
955 FLAC__seekable_stream_encoder_get_blocksize (this->encoder));
957 case PROP_MAX_LPC_ORDER:
958 g_value_set_uint (value,
959 FLAC__seekable_stream_encoder_get_max_lpc_order (this->encoder));
961 case PROP_QLP_COEFF_PRECISION:
962 g_value_set_uint (value,
963 FLAC__seekable_stream_encoder_get_qlp_coeff_precision (this->
966 case PROP_QLP_COEFF_PREC_SEARCH:
967 g_value_set_boolean (value,
968 FLAC__seekable_stream_encoder_get_do_qlp_coeff_prec_search (this->
971 case PROP_ESCAPE_CODING:
972 g_value_set_boolean (value,
973 FLAC__seekable_stream_encoder_get_do_escape_coding (this->encoder));
975 case PROP_EXHAUSTIVE_MODEL_SEARCH:
976 g_value_set_boolean (value,
977 FLAC__seekable_stream_encoder_get_do_exhaustive_model_search (this->
980 case PROP_MIN_RESIDUAL_PARTITION_ORDER:
981 g_value_set_uint (value,
982 FLAC__seekable_stream_encoder_get_min_residual_partition_order (this->
985 case PROP_MAX_RESIDUAL_PARTITION_ORDER:
986 g_value_set_uint (value,
987 FLAC__seekable_stream_encoder_get_max_residual_partition_order (this->
990 case PROP_RICE_PARAMETER_SEARCH_DIST:
991 g_value_set_uint (value,
992 FLAC__seekable_stream_encoder_get_rice_parameter_search_dist (this->
996 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1000 GST_OBJECT_UNLOCK (this);
1003 static GstStateChangeReturn
1004 gst_flac_enc_change_state (GstElement * element, GstStateChange transition)
1006 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
1007 GstFlacEnc *flacenc = GST_FLAC_ENC (element);
1009 switch (transition) {
1010 case GST_STATE_CHANGE_NULL_TO_READY:
1011 case GST_STATE_CHANGE_READY_TO_PAUSED:
1012 flacenc->stopped = FALSE;
1014 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1019 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1021 switch (transition) {
1022 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1024 case GST_STATE_CHANGE_PAUSED_TO_READY:
1025 if (FLAC__seekable_stream_encoder_get_state (flacenc->encoder) !=
1026 FLAC__STREAM_ENCODER_UNINITIALIZED) {
1027 flacenc->stopped = TRUE;
1028 FLAC__seekable_stream_encoder_finish (flacenc->encoder);
1030 flacenc->offset = 0;
1031 flacenc->samples_written = 0;
1032 flacenc->channels = 0;
1034 flacenc->sample_rate = 0;
1035 if (flacenc->meta) {
1036 FLAC__metadata_object_delete (flacenc->meta[0]);
1037 g_free (flacenc->meta);
1038 flacenc->meta = NULL;
1040 g_list_foreach (flacenc->headers, (GFunc) gst_mini_object_unref, NULL);
1041 g_list_free (flacenc->headers);
1042 flacenc->headers = NULL;
1043 flacenc->got_headers = FALSE;
1045 case GST_STATE_CHANGE_READY_TO_NULL: