Update for stream lock API changes: don't take stream log in sink event handlers...
[platform/upstream/gst-plugins-good.git] / 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 #include <gst/audio/audio.h>
29 #include <gst/tag/tag.h>
30 #include <gst/gsttagsetter.h>
31 #include "flac_compat.h"
32
33
34 GstElementDetails flacenc_details = {
35   "FLAC encoder",
36   "Codec/Encoder/Audio",
37   "Encodes audio with the FLAC lossless audio encoder",
38   "Wim Taymans <wim.taymans@chello.be>",
39 };
40
41 #define FLAC_SINK_CAPS \
42   "audio/x-raw-int, "               \
43   "endianness = (int) BYTE_ORDER, " \
44   "signed = (boolean) TRUE, "       \
45   "width = (int) 16, "              \
46   "depth = (int) 16, "              \
47   "rate = (int) [ 11025, 48000 ], " \
48   "channels = (int) [ 1, 2 ]"
49
50 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
51     GST_PAD_SRC,
52     GST_PAD_ALWAYS,
53     GST_STATIC_CAPS ("audio/x-flac")
54     );
55
56 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
57     GST_PAD_SINK,
58     GST_PAD_ALWAYS,
59     GST_STATIC_CAPS (FLAC_SINK_CAPS)
60     );
61
62 enum
63 {
64   PROP_0,
65   PROP_QUALITY,
66   PROP_STREAMABLE_SUBSET,
67   PROP_MID_SIDE_STEREO,
68   PROP_LOOSE_MID_SIDE_STEREO,
69   PROP_BLOCKSIZE,
70   PROP_MAX_LPC_ORDER,
71   PROP_QLP_COEFF_PRECISION,
72   PROP_QLP_COEFF_PREC_SEARCH,
73   PROP_ESCAPE_CODING,
74   PROP_EXHAUSTIVE_MODEL_SEARCH,
75   PROP_MIN_RESIDUAL_PARTITION_ORDER,
76   PROP_MAX_RESIDUAL_PARTITION_ORDER,
77   PROP_RICE_PARAMETER_SEARCH_DIST
78 };
79
80 GST_DEBUG_CATEGORY_STATIC (flacenc_debug);
81 #define GST_CAT_DEFAULT flacenc_debug
82
83
84 #define _do_init(type)                                                          \
85   G_STMT_START{                                                                 \
86     static const GInterfaceInfo tag_setter_info = {                             \
87       NULL,                                                                     \
88       NULL,                                                                     \
89       NULL                                                                      \
90     };                                                                          \
91     g_type_add_interface_static (type, GST_TYPE_TAG_SETTER,                     \
92                                  &tag_setter_info);                             \
93   }G_STMT_END
94
95 GST_BOILERPLATE_FULL (GstFlacEnc, gst_flacenc, GstElement, GST_TYPE_ELEMENT,
96     _do_init);
97
98 static void gst_flacenc_finalize (GObject * object);
99
100 static gboolean gst_flacenc_sink_setcaps (GstPad * pad, GstCaps * caps);
101 static gboolean gst_flacenc_sink_event (GstPad * pad, GstEvent * event);
102 static GstFlowReturn gst_flacenc_chain (GstPad * pad, GstBuffer * buffer);
103
104 static gboolean gst_flacenc_update_quality (GstFlacEnc * flacenc, gint quality);
105 static void gst_flacenc_set_property (GObject * object, guint prop_id,
106     const GValue * value, GParamSpec * pspec);
107 static void gst_flacenc_get_property (GObject * object, guint prop_id,
108     GValue * value, GParamSpec * pspec);
109 static GstStateChangeReturn gst_flacenc_change_state (GstElement * element,
110     GstStateChange transition);
111
112 static FLAC__StreamEncoderWriteStatus
113 gst_flacenc_write_callback (const FLAC__SeekableStreamEncoder * encoder,
114     const FLAC__byte buffer[], unsigned bytes,
115     unsigned samples, unsigned current_frame, void *client_data);
116 static FLAC__SeekableStreamEncoderSeekStatus
117 gst_flacenc_seek_callback (const FLAC__SeekableStreamEncoder * encoder,
118     FLAC__uint64 absolute_byte_offset, void *client_data);
119 static FLAC__SeekableStreamEncoderTellStatus
120 gst_flacenc_tell_callback (const FLAC__SeekableStreamEncoder * encoder,
121     FLAC__uint64 * absolute_byte_offset, void *client_data);
122
123 typedef struct
124 {
125   gboolean exhaustive_model_search;
126   gboolean escape_coding;
127   gboolean mid_side;
128   gboolean loose_mid_side;
129   guint qlp_coeff_precision;
130   gboolean qlp_coeff_prec_search;
131   guint min_residual_partition_order;
132   guint max_residual_partition_order;
133   guint rice_parameter_search_dist;
134   guint max_lpc_order;
135   guint blocksize;
136 }
137 GstFlacEncParams;
138
139 static const GstFlacEncParams flacenc_params[] = {
140   {FALSE, FALSE, FALSE, FALSE, 0, FALSE, 2, 2, 0, 0, 1152},
141   {FALSE, FALSE, TRUE, TRUE, 0, FALSE, 2, 2, 0, 0, 1152},
142   {FALSE, FALSE, TRUE, FALSE, 0, FALSE, 0, 3, 0, 0, 1152},
143   {FALSE, FALSE, FALSE, FALSE, 0, FALSE, 3, 3, 0, 6, 4608},
144   {FALSE, FALSE, TRUE, TRUE, 0, FALSE, 3, 3, 0, 8, 4608},
145   {FALSE, FALSE, TRUE, FALSE, 0, FALSE, 3, 3, 0, 8, 4608},
146   {FALSE, FALSE, TRUE, FALSE, 0, FALSE, 0, 4, 0, 8, 4608},
147   {TRUE, FALSE, TRUE, FALSE, 0, FALSE, 0, 6, 0, 8, 4608},
148   {TRUE, FALSE, TRUE, FALSE, 0, FALSE, 0, 6, 0, 12, 4608},
149   {TRUE, TRUE, TRUE, FALSE, 0, FALSE, 0, 16, 0, 32, 4608},
150 };
151
152 #define DEFAULT_QUALITY 5
153
154 #define GST_TYPE_FLACENC_QUALITY (gst_flacenc_quality_get_type ())
155 GType
156 gst_flacenc_quality_get_type (void)
157 {
158   static GType qtype = 0;
159
160   if (qtype == 0) {
161     static const GEnumValue values[] = {
162       {0, "0", "0 - Fastest compression"},
163       {1, "1", "1"},
164       {2, "2", "2"},
165       {3, "3", "3"},
166       {4, "4", "4"},
167       {5, "5", "5 - Default"},
168       {6, "6", "6"},
169       {7, "7", "7"},
170       {8, "8", "8 - Highest compression "},
171       {9, "9", "9 - Insane"},
172       {0, NULL, NULL}
173     };
174
175     qtype = g_enum_register_static ("GstFlacEncQuality", values);
176   }
177   return qtype;
178 }
179
180 static void
181 gst_flacenc_base_init (gpointer g_class)
182 {
183   GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
184
185   gst_element_class_add_pad_template (element_class,
186       gst_static_pad_template_get (&src_factory));
187   gst_element_class_add_pad_template (element_class,
188       gst_static_pad_template_get (&sink_factory));
189
190   gst_element_class_set_details (element_class, &flacenc_details);
191
192   GST_DEBUG_CATEGORY_INIT (flacenc_debug, "flacenc", 0,
193       "Flac encoding element");
194 }
195
196 static void
197 gst_flacenc_class_init (GstFlacEncClass * klass)
198 {
199   GObjectClass *gobject_class;
200   GstElementClass *gstelement_class;
201
202   gobject_class = (GObjectClass *) klass;
203   gstelement_class = (GstElementClass *) klass;
204
205   gobject_class->set_property = gst_flacenc_set_property;
206   gobject_class->get_property = gst_flacenc_get_property;
207   gobject_class->finalize = gst_flacenc_finalize;
208
209   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_QUALITY,
210       g_param_spec_enum ("quality",
211           "Quality",
212           "Speed versus compression tradeoff",
213           GST_TYPE_FLACENC_QUALITY, DEFAULT_QUALITY, G_PARAM_READWRITE));
214   g_object_class_install_property (G_OBJECT_CLASS (klass),
215       PROP_STREAMABLE_SUBSET, g_param_spec_boolean ("streamable_subset",
216           "Streamable subset",
217           "true to limit encoder to generating a Subset stream, else false",
218           TRUE, G_PARAM_READWRITE));
219   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MID_SIDE_STEREO,
220       g_param_spec_boolean ("mid_side_stereo", "Do mid side stereo",
221           "Do mid side stereo (only for stereo input)",
222           flacenc_params[DEFAULT_QUALITY].mid_side, G_PARAM_READWRITE));
223   g_object_class_install_property (G_OBJECT_CLASS (klass),
224       PROP_LOOSE_MID_SIDE_STEREO, g_param_spec_boolean ("loose_mid_side_stereo",
225           "Loose mid side stereo", "Loose mid side stereo",
226           flacenc_params[DEFAULT_QUALITY].loose_mid_side, G_PARAM_READWRITE));
227   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BLOCKSIZE,
228       g_param_spec_uint ("blocksize", "Blocksize", "Blocksize in samples",
229           FLAC__MIN_BLOCK_SIZE, FLAC__MAX_BLOCK_SIZE,
230           flacenc_params[DEFAULT_QUALITY].blocksize, G_PARAM_READWRITE));
231   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_LPC_ORDER,
232       g_param_spec_uint ("max_lpc_order", "Max LPC order",
233           "Max LPC order; 0 => use only fixed predictors", 0,
234           FLAC__MAX_LPC_ORDER, flacenc_params[DEFAULT_QUALITY].max_lpc_order,
235           G_PARAM_READWRITE));
236   g_object_class_install_property (G_OBJECT_CLASS (klass),
237       PROP_QLP_COEFF_PRECISION, g_param_spec_uint ("qlp_coeff_precision",
238           "QLP coefficients precision",
239           "Precision in bits of quantized linear-predictor coefficients; 0 = automatic",
240           0, 32, flacenc_params[DEFAULT_QUALITY].qlp_coeff_precision,
241           G_PARAM_READWRITE));
242   g_object_class_install_property (G_OBJECT_CLASS (klass),
243       PROP_QLP_COEFF_PREC_SEARCH, g_param_spec_boolean ("qlp_coeff_prec_search",
244           "Do QLP coefficients precision search",
245           "false = use qlp_coeff_precision, "
246           "true = search around qlp_coeff_precision, take best",
247           flacenc_params[DEFAULT_QUALITY].qlp_coeff_prec_search,
248           G_PARAM_READWRITE));
249   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ESCAPE_CODING,
250       g_param_spec_boolean ("escape_coding", "Do Escape coding",
251           "search for escape codes in the entropy coding stage "
252           "for slightly better compression",
253           flacenc_params[DEFAULT_QUALITY].escape_coding, G_PARAM_READWRITE));
254   g_object_class_install_property (G_OBJECT_CLASS (klass),
255       PROP_EXHAUSTIVE_MODEL_SEARCH,
256       g_param_spec_boolean ("exhaustive_model_search",
257           "Do exhaustive model search",
258           "do exhaustive search of LP coefficient quantization (expensive!)",
259           flacenc_params[DEFAULT_QUALITY].exhaustive_model_search,
260           G_PARAM_READWRITE));
261   g_object_class_install_property (G_OBJECT_CLASS (klass),
262       PROP_MIN_RESIDUAL_PARTITION_ORDER,
263       g_param_spec_uint ("min_residual_partition_order",
264           "Min residual partition order",
265           "Min residual partition order (above 4 doesn't usually help much)", 0,
266           16, flacenc_params[DEFAULT_QUALITY].min_residual_partition_order,
267           G_PARAM_READWRITE));
268   g_object_class_install_property (G_OBJECT_CLASS (klass),
269       PROP_MAX_RESIDUAL_PARTITION_ORDER,
270       g_param_spec_uint ("max_residual_partition_order",
271           "Max residual partition order",
272           "Max residual partition order (above 4 doesn't usually help much)", 0,
273           16, flacenc_params[DEFAULT_QUALITY].max_residual_partition_order,
274           G_PARAM_READWRITE));
275   g_object_class_install_property (G_OBJECT_CLASS (klass),
276       PROP_RICE_PARAMETER_SEARCH_DIST,
277       g_param_spec_uint ("rice_parameter_search_dist",
278           "rice_parameter_search_dist",
279           "0 = try only calc'd parameter k; else try all [k-dist..k+dist] "
280           "parameters, use best", 0, FLAC__MAX_RICE_PARTITION_ORDER,
281           flacenc_params[DEFAULT_QUALITY].rice_parameter_search_dist,
282           G_PARAM_READWRITE));
283
284   gstelement_class->change_state = gst_flacenc_change_state;
285 }
286
287 static void
288 gst_flacenc_init (GstFlacEnc * flacenc, GstFlacEncClass * klass)
289 {
290   GstElementClass *eclass = GST_ELEMENT_CLASS (klass);
291
292   flacenc->sinkpad =
293       gst_pad_new_from_template (gst_element_class_get_pad_template (eclass,
294           "sink"), "sink");
295   gst_element_add_pad (GST_ELEMENT (flacenc), flacenc->sinkpad);
296   gst_pad_set_chain_function (flacenc->sinkpad, gst_flacenc_chain);
297   gst_pad_set_event_function (flacenc->sinkpad, gst_flacenc_sink_event);
298   gst_pad_set_setcaps_function (flacenc->sinkpad, gst_flacenc_sink_setcaps);
299
300   flacenc->srcpad =
301       gst_pad_new_from_template (gst_element_class_get_pad_template (eclass,
302           "src"), "src");
303   gst_pad_use_fixed_caps (flacenc->srcpad);
304   gst_element_add_pad (GST_ELEMENT (flacenc), flacenc->srcpad);
305
306   flacenc->encoder = FLAC__seekable_stream_encoder_new ();
307
308   flacenc->offset = 0;
309   flacenc->samples_written = 0;
310   gst_flacenc_update_quality (flacenc, DEFAULT_QUALITY);
311   flacenc->tags = gst_tag_list_new ();
312 }
313
314 static void
315 gst_flacenc_finalize (GObject * object)
316 {
317   GstFlacEnc *flacenc = GST_FLACENC (object);
318
319   FLAC__seekable_stream_encoder_delete (flacenc->encoder);
320
321   G_OBJECT_CLASS (parent_class)->finalize (object);
322 }
323
324 static void
325 add_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
326 {
327   GList *comments;
328   GList *it;
329   GstFlacEnc *flacenc = GST_FLACENC (user_data);
330
331   comments = gst_tag_to_vorbis_comments (list, tag);
332   for (it = comments; it != NULL; it = it->next) {
333     FLAC__StreamMetadata_VorbisComment_Entry commment_entry;
334
335     commment_entry.length = strlen (it->data);
336     commment_entry.entry = it->data;
337     FLAC__metadata_object_vorbiscomment_insert_comment (flacenc->meta[0],
338         flacenc->meta[0]->data.vorbis_comment.num_comments,
339         commment_entry, TRUE);
340     g_free (it->data);
341   }
342   g_list_free (comments);
343 }
344
345 static void
346 gst_flacenc_set_metadata (GstFlacEnc * flacenc)
347 {
348   const GstTagList *user_tags;
349   GstTagList *copy;
350
351   g_return_if_fail (flacenc != NULL);
352   user_tags = gst_tag_setter_get_list (GST_TAG_SETTER (flacenc));
353   if ((flacenc->tags == NULL) && (user_tags == NULL)) {
354     return;
355   }
356   copy = gst_tag_list_merge (user_tags, flacenc->tags,
357       gst_tag_setter_get_merge_mode (GST_TAG_SETTER (flacenc)));
358   flacenc->meta = g_malloc (sizeof (FLAC__StreamMetadata **));
359
360   flacenc->meta[0] =
361       FLAC__metadata_object_new (FLAC__METADATA_TYPE_VORBIS_COMMENT);
362   gst_tag_list_foreach (copy, add_one_tag, flacenc);
363
364   if (FLAC__seekable_stream_encoder_set_metadata (flacenc->encoder,
365           flacenc->meta, 1) != true)
366     g_warning ("Dude, i'm already initialized!");
367   gst_tag_list_free (copy);
368 }
369
370 static gboolean
371 gst_flacenc_sink_setcaps (GstPad * pad, GstCaps * caps)
372 {
373   GstFlacEnc *flacenc;
374   GstStructure *structure;
375   FLAC__SeekableStreamEncoderState state;
376
377   /* takes a ref on flacenc */
378   flacenc = GST_FLACENC (gst_pad_get_parent (pad));
379
380   if (FLAC__seekable_stream_encoder_get_state (flacenc->encoder) !=
381       FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED)
382     goto encoder_already_initialized;
383
384   structure = gst_caps_get_structure (caps, 0);
385
386   if (!gst_structure_get_int (structure, "channels", &flacenc->channels)
387       || !gst_structure_get_int (structure, "depth", &flacenc->depth)
388       || !gst_structure_get_int (structure, "rate", &flacenc->sample_rate))
389     /* we got caps incompatible with the template? */
390     g_return_val_if_reached (FALSE);
391
392   caps = gst_caps_new_simple ("audio/x-flac",
393       "channels", G_TYPE_INT, flacenc->channels,
394       "rate", G_TYPE_INT, flacenc->sample_rate, NULL);
395
396   if (!gst_pad_set_caps (flacenc->srcpad, caps))
397     goto setting_src_caps_failed;
398
399   gst_caps_unref (caps);
400
401   FLAC__seekable_stream_encoder_set_bits_per_sample (flacenc->encoder,
402       flacenc->depth);
403   FLAC__seekable_stream_encoder_set_sample_rate (flacenc->encoder,
404       flacenc->sample_rate);
405   FLAC__seekable_stream_encoder_set_channels (flacenc->encoder,
406       flacenc->channels);
407
408   FLAC__seekable_stream_encoder_set_write_callback (flacenc->encoder,
409       gst_flacenc_write_callback);
410   FLAC__seekable_stream_encoder_set_seek_callback (flacenc->encoder,
411       gst_flacenc_seek_callback);
412   FLAC__seekable_stream_encoder_set_tell_callback (flacenc->encoder,
413       gst_flacenc_tell_callback);
414
415   FLAC__seekable_stream_encoder_set_client_data (flacenc->encoder, flacenc);
416
417   gst_flacenc_set_metadata (flacenc);
418
419   state = FLAC__seekable_stream_encoder_init (flacenc->encoder);
420   if (state != FLAC__STREAM_ENCODER_OK)
421     goto failed_to_initialize;
422
423   gst_object_unref (flacenc);
424
425   return TRUE;
426
427 encoder_already_initialized:
428   {
429     g_warning ("flac already initialized -- fixme allow this");
430     gst_object_unref (flacenc);
431     return FALSE;
432   }
433 setting_src_caps_failed:
434   {
435     GST_DEBUG_OBJECT (flacenc,
436         "Couldn't set caps on source pad: %" GST_PTR_FORMAT, caps);
437     gst_caps_unref (caps);
438     gst_object_unref (flacenc);
439     return FALSE;
440   }
441 failed_to_initialize:
442   {
443     GST_ELEMENT_ERROR (flacenc, LIBRARY, INIT, (NULL),
444         ("could not initialize encoder (wrong parameters?)"));
445     gst_object_unref (flacenc);
446     return FALSE;
447   }
448 }
449
450 static gboolean
451 gst_flacenc_update_quality (GstFlacEnc * flacenc, gint quality)
452 {
453   flacenc->quality = quality;
454
455 #define DO_UPDATE(name, val, str)                                               \
456   G_STMT_START {                                                                \
457     if (FLAC__seekable_stream_encoder_get_##name (flacenc->encoder) !=          \
458         flacenc_params[quality].val) {                                          \
459       FLAC__seekable_stream_encoder_set_##name (flacenc->encoder,               \
460           flacenc_params[quality].val);                                         \
461       g_object_notify (G_OBJECT (flacenc), str);                                \
462     }                                                                           \
463   } G_STMT_END
464
465   g_object_freeze_notify (G_OBJECT (flacenc));
466
467   if (flacenc->channels == 2) {
468     DO_UPDATE (do_mid_side_stereo, mid_side, "mid_side_stereo");
469     DO_UPDATE (loose_mid_side_stereo, loose_mid_side, "loose_mid_side");
470   }
471
472   DO_UPDATE (blocksize, blocksize, "blocksize");
473   DO_UPDATE (max_lpc_order, max_lpc_order, "max_lpc_order");
474   DO_UPDATE (qlp_coeff_precision, qlp_coeff_precision, "qlp_coeff_precision");
475   DO_UPDATE (do_qlp_coeff_prec_search, qlp_coeff_prec_search,
476       "qlp_coeff_prec_search");
477   DO_UPDATE (do_escape_coding, escape_coding, "escape_coding");
478   DO_UPDATE (do_exhaustive_model_search, exhaustive_model_search,
479       "exhaustive_model_search");
480   DO_UPDATE (min_residual_partition_order, min_residual_partition_order,
481       "min_residual_partition_order");
482   DO_UPDATE (max_residual_partition_order, max_residual_partition_order,
483       "max_residual_partition_order");
484   DO_UPDATE (rice_parameter_search_dist, rice_parameter_search_dist,
485       "rice_parameter_search_dist");
486
487 #undef DO_UPDATE
488
489   g_object_thaw_notify (G_OBJECT (flacenc));
490
491   return TRUE;
492 }
493
494 static FLAC__SeekableStreamEncoderSeekStatus
495 gst_flacenc_seek_callback (const FLAC__SeekableStreamEncoder * encoder,
496     FLAC__uint64 absolute_byte_offset, void *client_data)
497 {
498   GstFlacEnc *flacenc;
499   GstEvent *event;
500   GstPad *peerpad;
501
502   flacenc = GST_FLACENC (client_data);
503
504   if (flacenc->stopped)
505     return FLAC__STREAM_ENCODER_OK;
506
507   event = gst_event_new_newsegment (TRUE, 1.0, GST_FORMAT_BYTES,
508       absolute_byte_offset, GST_BUFFER_OFFSET_NONE, 0);
509
510   if ((peerpad = gst_pad_get_peer (flacenc->srcpad))) {
511     gboolean ret = gst_pad_send_event (peerpad, event);
512
513     gst_object_unref (peerpad);
514
515     GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " %s", absolute_byte_offset,
516         (ret) ? "succeeded" : "failed");
517   } else {
518     GST_DEBUG ("Seek to %" G_GUINT64_FORMAT " failed (no peer pad)",
519         absolute_byte_offset);
520   }
521
522   flacenc->offset = absolute_byte_offset;
523
524   return FLAC__STREAM_ENCODER_OK;
525 }
526
527 static FLAC__StreamEncoderWriteStatus
528 gst_flacenc_write_callback (const FLAC__SeekableStreamEncoder * encoder,
529     const FLAC__byte buffer[], unsigned bytes,
530     unsigned samples, unsigned current_frame, void *client_data)
531 {
532   GstFlowReturn ret;
533   GstFlacEnc *flacenc;
534   GstBuffer *outbuf;
535
536   flacenc = GST_FLACENC (client_data);
537
538   if (flacenc->stopped)
539     return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
540
541   if (gst_pad_alloc_buffer (flacenc->srcpad, flacenc->offset, bytes,
542           GST_PAD_CAPS (flacenc->srcpad), &outbuf) != GST_FLOW_OK) {
543     return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
544   }
545
546   memcpy (GST_BUFFER_DATA (outbuf), buffer, bytes);
547
548   if (samples > 0 && flacenc->samples_written != (guint64) - 1) {
549     GST_BUFFER_TIMESTAMP (outbuf) =
550         GST_FRAMES_TO_CLOCK_TIME (flacenc->samples_written,
551         flacenc->sample_rate);
552     GST_BUFFER_DURATION (outbuf) =
553         GST_FRAMES_TO_CLOCK_TIME (samples, flacenc->sample_rate);
554     /* offset_end = granulepos for ogg muxer */
555     GST_BUFFER_OFFSET_END (outbuf) = flacenc->samples_written + samples;
556   } else {
557     GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
558     GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
559   }
560
561   GST_DEBUG ("Pushing buffer: ts=%" GST_TIME_FORMAT ", samples=%u, size=%u, "
562       "pos=%" G_GUINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
563       samples, bytes, flacenc->offset);
564
565   ret = gst_pad_push (flacenc->srcpad, outbuf);
566
567   flacenc->offset += bytes;
568   flacenc->samples_written += samples;
569
570   if (ret != GST_FLOW_OK && GST_FLOW_IS_FATAL (ret))
571     return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
572
573   return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
574 }
575
576 static FLAC__SeekableStreamEncoderTellStatus
577 gst_flacenc_tell_callback (const FLAC__SeekableStreamEncoder * encoder,
578     FLAC__uint64 * absolute_byte_offset, void *client_data)
579 {
580   GstFlacEnc *flacenc = GST_FLACENC (client_data);
581
582   *absolute_byte_offset = flacenc->offset;
583
584   return FLAC__STREAM_ENCODER_OK;
585 }
586
587 static gboolean
588 gst_flacenc_sink_event (GstPad * pad, GstEvent * event)
589 {
590   GstFlacEnc *flacenc;
591   GstTagList *taglist;
592   gboolean ret = TRUE;
593
594   flacenc = GST_FLACENC (gst_pad_get_parent (pad));
595
596   GST_DEBUG ("Received %s event on sinkpad", GST_EVENT_TYPE_NAME (event));
597
598   switch (GST_EVENT_TYPE (event)) {
599     case GST_EVENT_NEWSEGMENT:{
600       GstFormat format;
601       gint64 start, stream_time;
602
603       if (flacenc->offset == 0) {
604         gst_event_parse_newsegment (event, NULL, NULL, &format, &start, NULL,
605             &stream_time);
606       } else {
607         start = -1;
608       }
609       if (start != 0) {
610         if (flacenc->offset > 0)
611           GST_DEBUG ("Not handling mid-stream newsegment event");
612         else
613           GST_DEBUG ("Not handling newsegment event with non-zero start");
614       } else {
615         GstEvent *e = gst_event_new_newsegment (FALSE, 1.0, GST_FORMAT_BYTES,
616             0, -1, 0);
617
618         ret = gst_pad_push_event (flacenc->srcpad, e);
619       }
620       if (stream_time != 0) {
621         GST_DEBUG ("Not handling non-zero stream time");
622       }
623       gst_event_unref (event);
624       /* don't push it downstream, we'll generate our own via seek to 0 */
625       break;
626     }
627     case GST_EVENT_EOS:
628       FLAC__seekable_stream_encoder_finish (flacenc->encoder);
629       ret = gst_pad_event_default (pad, event);
630       break;
631     case GST_EVENT_TAG:
632       if (flacenc->tags) {
633         gst_event_parse_tag (event, &taglist);
634         gst_tag_list_insert (flacenc->tags, taglist, GST_TAG_MERGE_REPLACE);
635       } else {
636         g_assert_not_reached ();
637       }
638       ret = gst_pad_event_default (pad, event);
639       break;
640     default:
641       ret = gst_pad_event_default (pad, event);
642       break;
643   }
644
645   gst_object_unref (flacenc);
646
647   return ret;
648 }
649
650 static GstFlowReturn
651 gst_flacenc_chain (GstPad * pad, GstBuffer * buffer)
652 {
653   GstFlacEnc *flacenc;
654   FLAC__int32 *data;
655   gulong insize;
656   gint samples, depth;
657   gulong i;
658   FLAC__bool res;
659
660   flacenc = GST_FLACENC (gst_pad_get_parent (pad));
661
662   depth = flacenc->depth;
663
664   insize = GST_BUFFER_SIZE (buffer);
665   samples = insize / ((depth + 7) >> 3);
666
667   data = g_malloc (samples * sizeof (FLAC__int32));
668
669   if (depth == 8) {
670     gint8 *indata = (gint8 *) GST_BUFFER_DATA (buffer);
671
672     for (i = 0; i < samples; i++)
673       data[i] = (FLAC__int32) indata[i];
674   } else if (depth == 16) {
675     gint16 *indata = (gint16 *) GST_BUFFER_DATA (buffer);
676
677     for (i = 0; i < samples; i++)
678       data[i] = (FLAC__int32) indata[i];
679   } else {
680     g_assert_not_reached ();
681   }
682
683   gst_buffer_unref (buffer);
684
685   res = FLAC__seekable_stream_encoder_process_interleaved (flacenc->encoder,
686       (const FLAC__int32 *) data, samples / flacenc->channels);
687
688   g_free (data);
689
690   gst_object_unref (flacenc);
691
692   if (res)
693     return GST_FLOW_OK;
694   else
695     return GST_FLOW_ERROR;
696 }
697
698 static void
699 gst_flacenc_set_property (GObject * object, guint prop_id,
700     const GValue * value, GParamSpec * pspec)
701 {
702   GstFlacEnc *this = GST_FLACENC (object);
703
704   GST_OBJECT_LOCK (this);
705
706   switch (prop_id) {
707     case PROP_QUALITY:
708       gst_flacenc_update_quality (this, g_value_get_enum (value));
709       break;
710     case PROP_STREAMABLE_SUBSET:
711       FLAC__seekable_stream_encoder_set_streamable_subset (this->encoder,
712           g_value_get_boolean (value));
713       break;
714     case PROP_MID_SIDE_STEREO:
715       FLAC__seekable_stream_encoder_set_do_mid_side_stereo (this->encoder,
716           g_value_get_boolean (value));
717       break;
718     case PROP_LOOSE_MID_SIDE_STEREO:
719       FLAC__seekable_stream_encoder_set_loose_mid_side_stereo (this->encoder,
720           g_value_get_boolean (value));
721       break;
722     case PROP_BLOCKSIZE:
723       FLAC__seekable_stream_encoder_set_blocksize (this->encoder,
724           g_value_get_uint (value));
725       break;
726     case PROP_MAX_LPC_ORDER:
727       FLAC__seekable_stream_encoder_set_max_lpc_order (this->encoder,
728           g_value_get_uint (value));
729       break;
730     case PROP_QLP_COEFF_PRECISION:
731       FLAC__seekable_stream_encoder_set_qlp_coeff_precision (this->encoder,
732           g_value_get_uint (value));
733       break;
734     case PROP_QLP_COEFF_PREC_SEARCH:
735       FLAC__seekable_stream_encoder_set_do_qlp_coeff_prec_search (this->encoder,
736           g_value_get_boolean (value));
737       break;
738     case PROP_ESCAPE_CODING:
739       FLAC__seekable_stream_encoder_set_do_escape_coding (this->encoder,
740           g_value_get_boolean (value));
741       break;
742     case PROP_EXHAUSTIVE_MODEL_SEARCH:
743       FLAC__seekable_stream_encoder_set_do_exhaustive_model_search (this->
744           encoder, g_value_get_boolean (value));
745       break;
746     case PROP_MIN_RESIDUAL_PARTITION_ORDER:
747       FLAC__seekable_stream_encoder_set_min_residual_partition_order (this->
748           encoder, g_value_get_uint (value));
749       break;
750     case PROP_MAX_RESIDUAL_PARTITION_ORDER:
751       FLAC__seekable_stream_encoder_set_max_residual_partition_order (this->
752           encoder, g_value_get_uint (value));
753       break;
754     case PROP_RICE_PARAMETER_SEARCH_DIST:
755       FLAC__seekable_stream_encoder_set_rice_parameter_search_dist (this->
756           encoder, g_value_get_uint (value));
757       break;
758     default:
759       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
760       break;
761   }
762
763   GST_OBJECT_UNLOCK (this);
764 }
765
766 static void
767 gst_flacenc_get_property (GObject * object, guint prop_id,
768     GValue * value, GParamSpec * pspec)
769 {
770   GstFlacEnc *this = GST_FLACENC (object);
771
772   GST_OBJECT_LOCK (this);
773
774   switch (prop_id) {
775     case PROP_QUALITY:
776       g_value_set_enum (value, this->quality);
777       break;
778     case PROP_STREAMABLE_SUBSET:
779       g_value_set_boolean (value,
780           FLAC__seekable_stream_encoder_get_streamable_subset (this->encoder));
781       break;
782     case PROP_MID_SIDE_STEREO:
783       g_value_set_boolean (value,
784           FLAC__seekable_stream_encoder_get_do_mid_side_stereo (this->encoder));
785       break;
786     case PROP_LOOSE_MID_SIDE_STEREO:
787       g_value_set_boolean (value,
788           FLAC__seekable_stream_encoder_get_loose_mid_side_stereo (this->
789               encoder));
790       break;
791     case PROP_BLOCKSIZE:
792       g_value_set_uint (value,
793           FLAC__seekable_stream_encoder_get_blocksize (this->encoder));
794       break;
795     case PROP_MAX_LPC_ORDER:
796       g_value_set_uint (value,
797           FLAC__seekable_stream_encoder_get_max_lpc_order (this->encoder));
798       break;
799     case PROP_QLP_COEFF_PRECISION:
800       g_value_set_uint (value,
801           FLAC__seekable_stream_encoder_get_qlp_coeff_precision (this->
802               encoder));
803       break;
804     case PROP_QLP_COEFF_PREC_SEARCH:
805       g_value_set_boolean (value,
806           FLAC__seekable_stream_encoder_get_do_qlp_coeff_prec_search (this->
807               encoder));
808       break;
809     case PROP_ESCAPE_CODING:
810       g_value_set_boolean (value,
811           FLAC__seekable_stream_encoder_get_do_escape_coding (this->encoder));
812       break;
813     case PROP_EXHAUSTIVE_MODEL_SEARCH:
814       g_value_set_boolean (value,
815           FLAC__seekable_stream_encoder_get_do_exhaustive_model_search (this->
816               encoder));
817       break;
818     case PROP_MIN_RESIDUAL_PARTITION_ORDER:
819       g_value_set_uint (value,
820           FLAC__seekable_stream_encoder_get_min_residual_partition_order (this->
821               encoder));
822       break;
823     case PROP_MAX_RESIDUAL_PARTITION_ORDER:
824       g_value_set_uint (value,
825           FLAC__seekable_stream_encoder_get_max_residual_partition_order (this->
826               encoder));
827       break;
828     case PROP_RICE_PARAMETER_SEARCH_DIST:
829       g_value_set_uint (value,
830           FLAC__seekable_stream_encoder_get_rice_parameter_search_dist (this->
831               encoder));
832       break;
833     default:
834       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
835       break;
836   }
837
838   GST_OBJECT_UNLOCK (this);
839 }
840
841 static GstStateChangeReturn
842 gst_flacenc_change_state (GstElement * element, GstStateChange transition)
843 {
844   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
845   GstFlacEnc *flacenc = GST_FLACENC (element);
846
847   switch (transition) {
848     case GST_STATE_CHANGE_NULL_TO_READY:
849     case GST_STATE_CHANGE_READY_TO_PAUSED:
850       flacenc->stopped = FALSE;
851       break;
852     case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
853     default:
854       break;
855   }
856
857   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
858
859   switch (transition) {
860     case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
861       break;
862     case GST_STATE_CHANGE_PAUSED_TO_READY:
863       if (FLAC__seekable_stream_encoder_get_state (flacenc->encoder) !=
864           FLAC__STREAM_ENCODER_UNINITIALIZED) {
865         flacenc->stopped = TRUE;
866         FLAC__seekable_stream_encoder_finish (flacenc->encoder);
867       }
868       flacenc->offset = 0;
869       flacenc->samples_written = 0;
870       if (flacenc->meta) {
871         FLAC__metadata_object_delete (flacenc->meta[0]);
872         g_free (flacenc->meta);
873         flacenc->meta = NULL;
874       }
875       break;
876     case GST_STATE_CHANGE_READY_TO_NULL:
877     default:
878       break;
879   }
880
881   return ret;
882 }