1 /* GStreamer encoding bin
2 * Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
3 * (C) 2009 Nokia Corporation
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
26 #include "gstencodebin.h"
27 #include "gstsmartencoder.h"
28 #include "gststreamsplitter.h"
29 #include "gststreamcombiner.h"
30 #include <gst/gst-i18n-plugin.h>
33 * SECTION:element-encodebin
35 * EncodeBin provides a bin for encoding/muxing various streams according to
36 * a specified #GstEncodingProfile.
38 * Based on the profile that was set (via the #GstEncodeBin:profile property),
39 * EncodeBin will internally select and configure the required elements
40 * (encoders, muxers, but also audio and video converters) so that you can
41 * provide it raw or pre-encoded streams of data in input and have your
42 * encoded/muxed/converted stream in output.
45 * <title>Features</title>
48 * Automatic encoder and muxer selection based on elements available on the
52 * Conversion of raw audio/video streams (scaling, framerate conversion,
53 * colorspace conversion, samplerate conversion) to conform to the profile
57 * Variable number of streams. If the presence property for a stream encoding
58 * profile is 0, you can request any number of sink pads for it via the
59 * standard request pad gstreamer API or the #GstEncodeBin::request-pad action
63 * Avoid reencoding (passthrough). If the input stream is already encoded and is
64 * compatible with what the #GstEncodingProfile expects, then the stream won't
65 * be re-encoded but just passed through downstream to the muxer or the output.
68 * Mix pre-encoded and raw streams as input. In addition to the passthrough
69 * feature above, you can feed both raw audio/video *AND* already-encoded data
70 * to a pad. #GstEncodeBin will take care of passing through the compatible
71 * segments and re-encoding the segments of media that need encoding.
74 * Standard behaviour is to use a #GstEncodingContainerProfile to have both
75 * encoding and muxing performed. But you can also provide a single stream
76 * profile (like #GstEncodingAudioProfile) to only have the encoding done and
77 * handle the encoded output yourself.
80 * Audio imperfection corrections. Incoming audio streams can have non perfect
81 * timestamps (jitter), like the streams coming from ASF files. #GstEncodeBin
82 * will automatically fix those imperfections for you. See
83 * #GstEncodeBin:audio-jitter-tolerance for more details.
86 * Variable or Constant video framerate. If your #GstEncodingVideoProfile has
87 * the variableframerate property deactivated (default), then the incoming
88 * raw video stream will be retimestampped in order to produce a constant
92 * Cross-boundary re-encoding. When feeding compatible pre-encoded streams that
93 * fall on segment boundaries, and for supported formats (right now only H263),
94 * the GOP will be decoded/reencoded when needed to produce an encoded output
95 * that fits exactly within the request GstSegment.
98 * Missing plugin support. If a #GstElement is missing to encode/mux to the
99 * request profile formats, a missing-plugin #GstMessage will be posted on the
100 * #GstBus, allowing systems that support the missing-plugin system to offer the
101 * user a way to install the missing element.
110 * Handling mp3!xing!idv3 and theora!ogg tagsetting scenarios:
111 * Once we have chosen a muxer:
112 * When a new stream is requested:
113 * If muxer isn't 'Formatter' OR doesn't have a TagSetter interface:
114 * Find a Formatter for the given stream (preferably with TagSetter)
115 * Insert that before muxer
118 #define fast_pad_link(a,b) gst_pad_link_full((a),(b),GST_PAD_LINK_CHECK_NOTHING)
119 #define fast_element_link(a,b) gst_element_link_pads_full((a),"src",(b),"sink",GST_PAD_LINK_CHECK_NOTHING)
123 GST_ENC_FLAG_NO_AUDIO_CONVERSION = (1 << 0),
124 GST_ENC_FLAG_NO_VIDEO_CONVERSION = (1 << 1)
127 #define GST_TYPE_ENC_FLAGS (gst_enc_flags_get_type())
128 GType gst_enc_flags_get_type (void);
130 /* generic templates */
131 static GstStaticPadTemplate muxer_src_template =
132 GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
133 GST_STATIC_CAPS_ANY);
135 static GstStaticPadTemplate video_sink_template =
136 GST_STATIC_PAD_TEMPLATE ("video_%d",
139 GST_STATIC_CAPS_ANY);
140 static GstStaticPadTemplate audio_sink_template =
141 GST_STATIC_PAD_TEMPLATE ("audio_%d",
144 GST_STATIC_CAPS_ANY);
145 /* static GstStaticPadTemplate text_sink_template = */
146 /* GST_STATIC_PAD_TEMPLATE ("text_%d", */
148 /* GST_PAD_REQUEST, */
149 /* GST_STATIC_CAPS_ANY); */
150 static GstStaticPadTemplate private_sink_template =
151 GST_STATIC_PAD_TEMPLATE ("private_%d",
154 GST_STATIC_CAPS_ANY);
160 /* the profile field is only valid if it could be entirely setup */
161 GstEncodingProfile *profile;
163 GList *streams; /* List of StreamGroup, not sorted */
166 /* Ghostpad with changing target */
169 /* TRUE if in PAUSED/PLAYING */
172 /* available muxers, encoders and parsers */
178 /* Increasing counter for unique pad name */
181 /* Cached caps for identification */
182 GstCaps *raw_video_caps;
183 GstCaps *raw_audio_caps;
184 /* GstCaps *raw_text_caps; */
186 guint queue_buffers_max;
187 guint queue_bytes_max;
188 guint64 queue_time_max;
191 gboolean avoid_reencoding;
196 struct _GstEncodeBinClass
201 GstPad *(*request_pad) (GstEncodeBin * encodebin, GstCaps * caps);
204 typedef struct _StreamGroup StreamGroup;
209 GstEncodingProfile *profile;
210 GstPad *ghostpad; /* Sink ghostpad */
211 GstElement *inqueue; /* Queue just after the ghostpad */
212 GstElement *splitter;
213 GList *converters; /* List of conversion GstElement */
214 GstElement *capsfilter; /* profile->restriction (if non-NULL/ANY) */
215 GstElement *encoder; /* Encoder (can be NULL) */
216 GstElement *combiner;
218 GstElement *smartencoder;
219 GstElement *outfilter; /* Output capsfilter (streamprofile.format) */
220 GstElement *formatter;
221 GstElement *outqueue; /* Queue just before the muxer */
224 /* Default for queues (same defaults as queue element) */
225 #define DEFAULT_QUEUE_BUFFERS_MAX 200
226 #define DEFAULT_QUEUE_BYTES_MAX 10 * 1024 * 1024
227 #define DEFAULT_QUEUE_TIME_MAX GST_SECOND
228 #define DEFAULT_AUDIO_JITTER_TOLERANCE 20 * GST_MSECOND
229 #define DEFAULT_AVOID_REENCODING FALSE
230 #define DEFAULT_FLAGS 0
232 #define DEFAULT_RAW_CAPS \
236 "text/x-pango-markup; " \
237 "video/x-dvd-subpicture; " \
245 PROP_QUEUE_BUFFERS_MAX,
246 PROP_QUEUE_BYTES_MAX,
248 PROP_AUDIO_JITTER_TOLERANCE,
249 PROP_AVOID_REENCODING,
261 #define C_FLAGS(v) ((guint) v)
264 gst_enc_flags_get_type (void)
266 static const GFlagsValue values[] = {
267 {C_FLAGS (GST_ENC_FLAG_NO_AUDIO_CONVERSION), "Do not use audio conversion "
268 "elements", "no-audio-conversion"},
269 {C_FLAGS (GST_ENC_FLAG_NO_VIDEO_CONVERSION), "Do not use video conversion "
270 "elements", "no-video-conversion"},
273 static volatile GType id = 0;
275 if (g_once_init_enter ((gsize *) & id)) {
278 _id = g_flags_register_static ("GstEncFlags", values);
280 g_once_init_leave ((gsize *) & id, _id);
286 static guint gst_encode_bin_signals[LAST_SIGNAL] = { 0 };
288 static GstStaticCaps default_raw_caps = GST_STATIC_CAPS (DEFAULT_RAW_CAPS);
290 GST_DEBUG_CATEGORY_STATIC (gst_encode_bin_debug);
291 #define GST_CAT_DEFAULT gst_encode_bin_debug
293 G_DEFINE_TYPE (GstEncodeBin, gst_encode_bin, GST_TYPE_BIN);
295 static void gst_encode_bin_dispose (GObject * object);
296 static void gst_encode_bin_set_property (GObject * object, guint prop_id,
297 const GValue * value, GParamSpec * pspec);
298 static void gst_encode_bin_get_property (GObject * object, guint prop_id,
299 GValue * value, GParamSpec * pspec);
300 static GstStateChangeReturn gst_encode_bin_change_state (GstElement * element,
301 GstStateChange transition);
303 static GstPad *gst_encode_bin_request_new_pad (GstElement * element,
304 GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
305 static void gst_encode_bin_release_pad (GstElement * element, GstPad * pad);
308 gst_encode_bin_set_profile (GstEncodeBin * ebin, GstEncodingProfile * profile);
309 static void gst_encode_bin_tear_down_profile (GstEncodeBin * ebin);
310 static gboolean gst_encode_bin_setup_profile (GstEncodeBin * ebin,
311 GstEncodingProfile * profile);
313 static StreamGroup *_create_stream_group (GstEncodeBin * ebin,
314 GstEncodingProfile * sprof, const gchar * sinkpadname, GstCaps * sinkcaps);
315 static void stream_group_remove (GstEncodeBin * ebin, StreamGroup * sgroup);
316 static GstPad *gst_encode_bin_request_pad_signal (GstEncodeBin * encodebin,
319 static inline GstElement *_get_formatter (GstEncodeBin * ebin,
320 GstEncodingProfile * sprof);
323 gst_encode_bin_class_init (GstEncodeBinClass * klass)
325 GObjectClass *gobject_klass;
326 GstElementClass *gstelement_klass;
328 gobject_klass = (GObjectClass *) klass;
329 gstelement_klass = (GstElementClass *) klass;
331 gobject_klass->dispose = gst_encode_bin_dispose;
332 gobject_klass->set_property = gst_encode_bin_set_property;
333 gobject_klass->get_property = gst_encode_bin_get_property;
338 * GstEncodeBin:profile:
340 * The #GstEncodingProfile to use. This property must be set before going
341 * to %GST_STATE_PAUSED or higher.
343 g_object_class_install_property (gobject_klass, PROP_PROFILE,
344 g_param_spec_object ("profile", "Profile",
345 "The GstEncodingProfile to use", GST_TYPE_ENCODING_PROFILE,
346 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
348 g_object_class_install_property (gobject_klass, PROP_QUEUE_BYTES_MAX,
349 g_param_spec_uint ("queue-bytes-max", "Max. size (kB)",
350 "Max. amount of data in the queue (bytes, 0=disable)",
351 0, G_MAXUINT, DEFAULT_QUEUE_BYTES_MAX,
352 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
354 g_object_class_install_property (gobject_klass, PROP_QUEUE_BUFFERS_MAX,
355 g_param_spec_uint ("queue-buffers-max", "Max. size (buffers)",
356 "Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT,
357 DEFAULT_QUEUE_BUFFERS_MAX,
358 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
360 g_object_class_install_property (gobject_klass, PROP_QUEUE_TIME_MAX,
361 g_param_spec_uint64 ("queue-time-max", "Max. size (ns)",
362 "Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64,
363 DEFAULT_QUEUE_TIME_MAX, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
365 g_object_class_install_property (gobject_klass, PROP_AUDIO_JITTER_TOLERANCE,
366 g_param_spec_uint64 ("audio-jitter-tolerance", "Audio jitter tolerance",
367 "Amount of timestamp jitter/imperfection to allow on audio streams before inserting/dropping samples (ns)",
368 0, G_MAXUINT64, DEFAULT_AUDIO_JITTER_TOLERANCE,
369 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
371 g_object_class_install_property (gobject_klass, PROP_AVOID_REENCODING,
372 g_param_spec_boolean ("avoid-reencoding", "Avoid re-encoding",
373 "Whether to re-encode portions of compatible video streams that lay on segment boundaries",
374 DEFAULT_AVOID_REENCODING,
375 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
380 * Control the behaviour of encodebin.
382 g_object_class_install_property (gobject_klass, PROP_FLAGS,
383 g_param_spec_flags ("flags", "Flags", "Flags to control behaviour",
384 GST_TYPE_ENC_FLAGS, DEFAULT_FLAGS,
385 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
389 * GstEncodeBin::request-pad
390 * @encodebin: a #GstEncodeBin instance
393 * Use this method to request an unused sink request #GstPad that can take the
394 * provided @caps as input. You must release the pad with
395 * gst_element_release_request_pad() when you are done with it.
397 * Returns: A compatible #GstPad, or %NULL if no compatible #GstPad could be
398 * created or is available.
400 gst_encode_bin_signals[SIGNAL_REQUEST_PAD] =
401 g_signal_new ("request-pad", G_TYPE_FROM_CLASS (klass),
402 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstEncodeBinClass,
403 request_pad), NULL, NULL, gst_encode_marshal_OBJECT__BOXED,
404 GST_TYPE_PAD, 1, GST_TYPE_CAPS);
406 klass->request_pad = gst_encode_bin_request_pad_signal;
408 gst_element_class_add_pad_template (gstelement_klass,
409 gst_static_pad_template_get (&muxer_src_template));
410 gst_element_class_add_pad_template (gstelement_klass,
411 gst_static_pad_template_get (&video_sink_template));
412 gst_element_class_add_pad_template (gstelement_klass,
413 gst_static_pad_template_get (&audio_sink_template));
414 /* gst_element_class_add_pad_template (gstelement_klass, */
415 /* gst_static_pad_template_get (&text_sink_template)); */
416 gst_element_class_add_pad_template (gstelement_klass,
417 gst_static_pad_template_get (&private_sink_template));
419 gstelement_klass->change_state =
420 GST_DEBUG_FUNCPTR (gst_encode_bin_change_state);
421 gstelement_klass->request_new_pad =
422 GST_DEBUG_FUNCPTR (gst_encode_bin_request_new_pad);
423 gstelement_klass->release_pad =
424 GST_DEBUG_FUNCPTR (gst_encode_bin_release_pad);
426 gst_element_class_set_details_simple (gstelement_klass,
428 "Generic/Bin/Encoder",
429 "Convenience encoding/muxing element",
430 "Edward Hervey <edward.hervey@collabora.co.uk>");
434 gst_encode_bin_dispose (GObject * object)
436 GstEncodeBin *ebin = (GstEncodeBin *) object;
439 gst_plugin_feature_list_free (ebin->muxers);
441 if (ebin->formatters)
442 gst_plugin_feature_list_free (ebin->formatters);
445 gst_plugin_feature_list_free (ebin->encoders);
448 gst_plugin_feature_list_free (ebin->parsers);
450 gst_encode_bin_tear_down_profile (ebin);
452 if (ebin->raw_video_caps)
453 gst_caps_unref (ebin->raw_video_caps);
454 if (ebin->raw_audio_caps)
455 gst_caps_unref (ebin->raw_audio_caps);
456 /* if (ebin->raw_text_caps) */
457 /* gst_caps_unref (ebin->raw_text_caps); */
459 G_OBJECT_CLASS (gst_encode_bin_parent_class)->dispose (object);
463 gst_encode_bin_init (GstEncodeBin * encode_bin)
465 GstPadTemplate *tmpl;
468 gst_element_factory_list_get_elements (GST_ELEMENT_FACTORY_TYPE_MUXER,
471 encode_bin->formatters =
472 gst_element_factory_list_get_elements (GST_ELEMENT_FACTORY_TYPE_FORMATTER,
475 encode_bin->encoders =
476 gst_element_factory_list_get_elements (GST_ELEMENT_FACTORY_TYPE_ENCODER,
479 encode_bin->parsers =
480 gst_element_factory_list_get_elements (GST_ELEMENT_FACTORY_TYPE_PARSER,
483 encode_bin->raw_video_caps = gst_caps_from_string ("video/x-raw");
484 encode_bin->raw_audio_caps = gst_caps_from_string ("audio/x-raw");
485 /* encode_bin->raw_text_caps = */
486 /* gst_caps_from_string ("text/plain;text/x-pango-markup"); */
488 encode_bin->queue_buffers_max = DEFAULT_QUEUE_BUFFERS_MAX;
489 encode_bin->queue_bytes_max = DEFAULT_QUEUE_BYTES_MAX;
490 encode_bin->queue_time_max = DEFAULT_QUEUE_TIME_MAX;
491 encode_bin->tolerance = DEFAULT_AUDIO_JITTER_TOLERANCE;
492 encode_bin->avoid_reencoding = DEFAULT_AVOID_REENCODING;
493 encode_bin->flags = DEFAULT_FLAGS;
495 tmpl = gst_static_pad_template_get (&muxer_src_template);
496 encode_bin->srcpad = gst_ghost_pad_new_no_target_from_template ("src", tmpl);
497 gst_object_unref (tmpl);
498 gst_element_add_pad (GST_ELEMENT_CAST (encode_bin), encode_bin->srcpad);
502 gst_encode_bin_set_property (GObject * object, guint prop_id,
503 const GValue * value, GParamSpec * pspec)
505 GstEncodeBin *ebin = (GstEncodeBin *) object;
509 gst_encode_bin_set_profile (ebin,
510 (GstEncodingProfile *) g_value_get_object (value));
512 case PROP_QUEUE_BUFFERS_MAX:
513 ebin->queue_buffers_max = g_value_get_uint (value);
515 case PROP_QUEUE_BYTES_MAX:
516 ebin->queue_bytes_max = g_value_get_uint (value);
518 case PROP_QUEUE_TIME_MAX:
519 ebin->queue_time_max = g_value_get_uint64 (value);
521 case PROP_AUDIO_JITTER_TOLERANCE:
522 ebin->tolerance = g_value_get_uint64 (value);
524 case PROP_AVOID_REENCODING:
525 ebin->avoid_reencoding = g_value_get_boolean (value);
528 ebin->flags = g_value_get_flags (value);
531 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
537 gst_encode_bin_get_property (GObject * object, guint prop_id,
538 GValue * value, GParamSpec * pspec)
540 GstEncodeBin *ebin = (GstEncodeBin *) object;
544 g_value_set_object (value, (GObject *) ebin->profile);
546 case PROP_QUEUE_BUFFERS_MAX:
547 g_value_set_uint (value, ebin->queue_buffers_max);
549 case PROP_QUEUE_BYTES_MAX:
550 g_value_set_uint (value, ebin->queue_bytes_max);
552 case PROP_QUEUE_TIME_MAX:
553 g_value_set_uint64 (value, ebin->queue_time_max);
555 case PROP_AUDIO_JITTER_TOLERANCE:
556 g_value_set_uint64 (value, ebin->tolerance);
558 case PROP_AVOID_REENCODING:
559 g_value_set_boolean (value, ebin->avoid_reencoding);
562 g_value_set_flags (value, ebin->flags);
565 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
570 static inline gboolean
571 are_raw_caps (const GstCaps * caps)
573 GstCaps *raw = gst_static_caps_get (&default_raw_caps);
575 if (gst_caps_can_intersect (caps, raw)) {
576 gst_caps_unref (raw);
579 gst_caps_unref (raw);
583 /* Returns the number of time a given stream profile is currently used
586 stream_profile_used_count (GstEncodeBin * ebin, GstEncodingProfile * sprof)
588 guint nbprofused = 0;
591 for (tmp = ebin->streams; tmp; tmp = tmp->next) {
592 StreamGroup *sgroup = (StreamGroup *) tmp->data;
594 if (sgroup->profile == sprof)
601 static inline GstEncodingProfile *
602 next_unused_stream_profile (GstEncodeBin * ebin, GType ptype, GstCaps * caps)
604 GST_DEBUG_OBJECT (ebin, "ptype:%s, caps:%" GST_PTR_FORMAT,
605 g_type_name (ptype), caps);
607 if (G_UNLIKELY (ptype == G_TYPE_NONE && caps != NULL)) {
608 /* Identify the profile type based on raw caps */
609 if (gst_caps_can_intersect (ebin->raw_video_caps, caps))
610 ptype = GST_TYPE_ENCODING_VIDEO_PROFILE;
611 else if (gst_caps_can_intersect (ebin->raw_audio_caps, caps))
612 ptype = GST_TYPE_ENCODING_AUDIO_PROFILE;
613 /* else if (gst_caps_can_intersect (ebin->raw_text_caps, caps)) */
614 /* ptype = GST_TYPE_ENCODING_TEXT_PROFILE; */
615 GST_DEBUG_OBJECT (ebin, "Detected profile type as being %s",
616 g_type_name (ptype));
619 if (GST_IS_ENCODING_CONTAINER_PROFILE (ebin->profile)) {
623 gst_encoding_container_profile_get_profiles
624 (GST_ENCODING_CONTAINER_PROFILE (ebin->profile)); tmp;
626 GstEncodingProfile *sprof = (GstEncodingProfile *) tmp->data;
628 /* Pick an available Stream profile for which:
629 * * either it is of the compatibly raw type,
630 * * OR we can pass it through directly without encoding
632 if (G_TYPE_FROM_INSTANCE (sprof) == ptype) {
633 guint presence = gst_encoding_profile_get_presence (sprof);
634 GST_DEBUG ("Found a stream profile with the same type");
636 || (presence > stream_profile_used_count (ebin, sprof)))
638 } else if ((caps != NULL) && (ptype == G_TYPE_NONE)) {
642 outcaps = gst_encoding_profile_get_input_caps (sprof);
643 GST_DEBUG ("Unknown stream, seeing if it's compatible with %"
644 GST_PTR_FORMAT, outcaps);
645 res = gst_caps_can_intersect (outcaps, caps);
646 gst_caps_unref (outcaps);
658 request_pad_for_stream (GstEncodeBin * encodebin, GType ptype,
659 const gchar * name, GstCaps * caps)
662 GstEncodingProfile *sprof;
664 GST_DEBUG_OBJECT (encodebin, "name:%s caps:%" GST_PTR_FORMAT, name, caps);
666 /* Figure out if we have a unused GstEncodingProfile we can use for
668 sprof = next_unused_stream_profile (encodebin, ptype, caps);
670 if (G_UNLIKELY (sprof == NULL))
671 goto no_stream_profile;
673 sgroup = _create_stream_group (encodebin, sprof, name, caps);
674 if (G_UNLIKELY (sgroup == NULL))
675 goto no_stream_group;
677 return sgroup->ghostpad;
681 GST_WARNING_OBJECT (encodebin, "Couldn't find a compatible stream profile");
687 GST_WARNING_OBJECT (encodebin, "Couldn't create a StreamGroup");
693 gst_encode_bin_request_new_pad (GstElement * element,
694 GstPadTemplate * templ, const gchar * name, const GstCaps * caps)
696 GstEncodeBin *ebin = (GstEncodeBin *) element;
699 GST_DEBUG_OBJECT (element, "templ:%s, name:%s", templ->name_template, name);
701 /* Identify the stream group */
703 res = request_pad_for_stream (ebin, G_TYPE_NONE, name, (GstCaps *) caps);
707 GType ptype = G_TYPE_NONE;
709 if (!strcmp (templ->name_template, "video_%d"))
710 ptype = GST_TYPE_ENCODING_VIDEO_PROFILE;
711 else if (!strcmp (templ->name_template, "audio_%d"))
712 ptype = GST_TYPE_ENCODING_AUDIO_PROFILE;
713 /* else if (!strcmp (templ->name_template, "text_%d")) */
714 /* ptype = GST_TYPE_ENCODING_TEXT_PROFILE; */
716 /* FIXME : Check uniqueness of pad */
717 /* FIXME : Check that the requested number is the last one, and if not,
718 * update the last_pad_id variable so that we don't create a pad with
719 * the same name/number in the future */
721 res = request_pad_for_stream (ebin, ptype, name, NULL);
728 gst_encode_bin_request_pad_signal (GstEncodeBin * encodebin, GstCaps * caps)
730 GstPad *pad = request_pad_for_stream (encodebin, G_TYPE_NONE, NULL, caps);
732 return pad ? GST_PAD_CAST (gst_object_ref (pad)) : NULL;
735 static inline StreamGroup *
736 find_stream_group_from_pad (GstEncodeBin * ebin, GstPad * pad)
740 for (tmp = ebin->streams; tmp; tmp = tmp->next) {
741 StreamGroup *sgroup = (StreamGroup *) tmp->data;
742 if (G_UNLIKELY (sgroup->ghostpad == pad))
750 gst_encode_bin_release_pad (GstElement * element, GstPad * pad)
752 GstEncodeBin *ebin = (GstEncodeBin *) element;
755 /* Find the associated StreamGroup */
757 sgroup = find_stream_group_from_pad (ebin, pad);
758 if (G_UNLIKELY (sgroup == NULL))
759 goto no_stream_group;
761 /* Release objects/data associated with the StreamGroup */
762 stream_group_remove (ebin, sgroup);
768 GST_WARNING_OBJECT (ebin, "Couldn't find corresponding StreamGroup");
773 /* Create a parser for the given stream profile */
774 static inline GstElement *
775 _get_parser (GstEncodeBin * ebin, GstEncodingProfile * sprof)
777 GList *parsers1, *parsers, *tmp;
778 GstElement *parser = NULL;
779 GstElementFactory *parserfact = NULL;
780 const GstCaps *format;
782 format = gst_encoding_profile_get_format (sprof);
784 GST_DEBUG ("Getting list of parsers for format %" GST_PTR_FORMAT, format);
786 /* FIXME : requesting twice the parsers twice is a bit ugly, we should
787 * have a method to request on more than one condition */
789 gst_element_factory_list_filter (ebin->parsers, format,
792 gst_element_factory_list_filter (parsers1, format, GST_PAD_SINK, FALSE);
793 gst_plugin_feature_list_free (parsers1);
795 if (G_UNLIKELY (parsers == NULL)) {
796 GST_DEBUG ("Couldn't find any compatible parsers");
800 for (tmp = parsers; tmp; tmp = tmp->next) {
801 /* FIXME : We're only picking the first one so far */
802 /* FIXME : signal the user if he wants this */
803 parserfact = (GstElementFactory *) tmp->data;
808 parser = gst_element_factory_create (parserfact, NULL);
810 gst_plugin_feature_list_free (parsers);
816 _create_element_and_set_preset (GstElementFactory * factory,
817 const gchar * preset, const gchar * name)
819 GstElement *res = NULL;
821 GST_DEBUG ("Creating element from factory %s", GST_OBJECT_NAME (factory));
822 res = gst_element_factory_create (factory, name);
823 if (preset && GST_IS_PRESET (res) &&
824 !gst_preset_load_preset (GST_PRESET (res), preset)) {
825 GST_WARNING ("Couldn't set preset [%s] on element [%s]",
826 preset, GST_OBJECT_NAME (factory));
827 gst_object_unref (res);
834 /* Create the encoder for the given stream profile */
835 static inline GstElement *
836 _get_encoder (GstEncodeBin * ebin, GstEncodingProfile * sprof)
838 GList *encoders, *tmp;
839 GstElement *encoder = NULL;
840 GstElementFactory *encoderfact = NULL;
841 const GstCaps *format;
844 format = gst_encoding_profile_get_format (sprof);
845 preset = gst_encoding_profile_get_preset (sprof);
847 GST_DEBUG ("Getting list of encoders for format %" GST_PTR_FORMAT, format);
849 /* If stream caps are raw, return identity */
850 if (G_UNLIKELY (are_raw_caps (format))) {
851 GST_DEBUG ("Stream format is raw, returning identity as the encoder");
852 encoder = gst_element_factory_make ("identity", NULL);
857 gst_element_factory_list_filter (ebin->encoders, format,
860 if (G_UNLIKELY (encoders == NULL)) {
861 GST_DEBUG ("Couldn't find any compatible encoders");
865 for (tmp = encoders; tmp; tmp = tmp->next) {
866 encoderfact = (GstElementFactory *) tmp->data;
867 if ((encoder = _create_element_and_set_preset (encoderfact, preset, NULL)))
871 gst_plugin_feature_list_free (encoders);
878 local_element_request_pad (GstElement * element, GstPadTemplate * templ,
879 const gchar * name, const GstCaps * caps)
881 GstPad *newpad = NULL;
882 GstElementClass *oclass;
884 oclass = GST_ELEMENT_GET_CLASS (element);
886 if (oclass->request_new_pad)
887 newpad = (oclass->request_new_pad) (element, templ, name, caps);
890 gst_object_ref (newpad);
896 gst_element_get_pad_from_template (GstElement * element, GstPadTemplate * templ)
899 GstPadPresence presence;
901 /* If this function is ever exported, we need check the validity of `element'
902 * and `templ', and to make sure the template actually belongs to the
905 presence = GST_PAD_TEMPLATE_PRESENCE (templ);
909 case GST_PAD_SOMETIMES:
910 ret = gst_element_get_static_pad (element, templ->name_template);
911 if (!ret && presence == GST_PAD_ALWAYS)
913 ("Element %s has an ALWAYS template %s, but no pad of the same name",
914 GST_OBJECT_NAME (element), templ->name_template);
917 case GST_PAD_REQUEST:
918 ret = gst_element_request_pad (element, templ, NULL, NULL);
925 /* FIXME : Improve algorithm for finding compatible muxer sink pad */
926 static inline GstPad *
927 get_compatible_muxer_sink_pad (GstEncodeBin * ebin, GstElement * encoder,
931 GstPadTemplate *srctempl = NULL;
932 GstPadTemplate *sinktempl;
936 srcpad = gst_element_get_static_pad (encoder, "src");
938 srctempl = gst_pad_get_pad_template (srcpad);
940 GST_DEBUG_OBJECT (ebin,
941 "Attempting to find pad from muxer %s compatible with %s:%s",
942 GST_ELEMENT_NAME (ebin->muxer), GST_DEBUG_PAD_NAME (srcpad));
944 gst_object_unref (srcpad);
945 sinktempl = gst_element_get_compatible_pad_template (ebin->muxer, srctempl);
946 gst_object_unref (srctempl);
949 gst_pad_template_new ("whatever", GST_PAD_SRC, GST_PAD_ALWAYS,
951 g_assert (srctempl != NULL);
952 sinktempl = gst_element_get_compatible_pad_template (ebin->muxer, srctempl);
953 g_object_unref (srctempl);
956 if (G_UNLIKELY (sinktempl == NULL))
959 sinkpad = gst_element_get_pad_from_template (ebin->muxer, sinktempl);
965 GST_WARNING_OBJECT (ebin, "No compatible pad available on muxer");
971 _has_class (GstElement * element, const gchar * classname)
973 GstElementClass *klass;
976 klass = GST_ELEMENT_GET_CLASS (element);
977 value = gst_element_class_get_metadata (klass, GST_ELEMENT_METADATA_KLASS);
979 return strstr (value, classname) != NULL;
982 /* FIXME : Add handling of streams that don't need encoding */
983 /* FIXME : Add handling of streams that don't require conversion elements */
985 * Create the elements, StreamGroup, add the sink pad, link it to the muxer
987 * sinkpadname: If non-NULL, that name will be assigned to the sink ghost pad
988 * sinkcaps: If non-NULL will be used to figure out how to setup the group */
990 _create_stream_group (GstEncodeBin * ebin, GstEncodingProfile * sprof,
991 const gchar * sinkpadname, GstCaps * sinkcaps)
993 StreamGroup *sgroup = NULL;
994 GstPad *sinkpad, *srcpad, *muxerpad = NULL;
995 /* Element we will link to the encoder */
996 GstElement *last = NULL;
997 GList *tmp, *tosync = NULL;
998 GstCaps *format, *restriction;
999 const gchar *missing_element_name;
1001 format = gst_encoding_profile_get_format (sprof);
1002 restriction = gst_encoding_profile_get_restriction (sprof);
1004 GST_DEBUG ("Creating group. format %" GST_PTR_FORMAT ", for caps %"
1005 GST_PTR_FORMAT, format, sinkcaps);
1006 GST_DEBUG ("avoid_reencoding:%d", ebin->avoid_reencoding);
1008 sgroup = g_slice_new0 (StreamGroup);
1009 sgroup->ebin = ebin;
1010 sgroup->profile = sprof;
1012 /* NOTE for people reading this code:
1014 * We construct the group starting by the furthest downstream element
1015 * and making our way up adding/syncing/linking as we go.
1017 * There are two parallel paths:
1018 * * One for raw data which goes through converters and encoders
1019 * * One for already encoded data
1022 /* Exception to the rule above:
1023 * We check if we have an available encoder so we can abort early */
1024 /* FIXME : What if we only want to do passthrough ??? */
1025 GST_LOG ("Checking for encoder availability");
1026 sgroup->encoder = _get_encoder (ebin, sprof);
1027 if (G_UNLIKELY (sgroup->encoder == NULL))
1031 * If we are handling a container profile, figure out if the muxer has a
1032 * sinkpad compatible with the selected profile */
1034 muxerpad = get_compatible_muxer_sink_pad (ebin, NULL, format);
1035 if (G_UNLIKELY (muxerpad == NULL))
1041 * We only use a 1buffer long queue here, the actual queueing will be done
1042 * in the input queue */
1043 last = sgroup->outqueue = gst_element_factory_make ("queue", NULL);
1044 g_object_set (sgroup->outqueue, "max-size-buffers", (guint32) 1,
1045 "max-size-bytes", (guint32) 0, "max-size-time", (guint64) 0,
1046 "silent", TRUE, NULL);
1048 gst_bin_add (GST_BIN (ebin), sgroup->outqueue);
1049 tosync = g_list_append (tosync, sgroup->outqueue);
1050 srcpad = gst_element_get_static_pad (sgroup->outqueue, "src");
1052 if (G_UNLIKELY (fast_pad_link (srcpad, muxerpad) != GST_PAD_LINK_OK)) {
1053 goto muxer_link_failure;
1055 gst_object_unref (muxerpad);
1057 gst_ghost_pad_set_target (GST_GHOST_PAD (ebin->srcpad), srcpad);
1059 gst_object_unref (srcpad);
1061 /* Check if we need a formatter
1062 * If we have no muxer or
1063 * if the muxer isn't a formatter and doesn't implement the tagsetter interface
1065 if (!ebin->muxer || (!GST_IS_TAG_SETTER (ebin->muxer)
1066 || !_has_class (ebin->muxer, "Formatter"))) {
1067 sgroup->formatter = _get_formatter (ebin, sprof);
1068 if (sgroup->formatter) {
1069 GST_DEBUG ("Adding formatter for %" GST_PTR_FORMAT, format);
1071 gst_bin_add (GST_BIN (ebin), sgroup->formatter);
1072 tosync = g_list_append (tosync, sgroup->formatter);
1073 if (G_UNLIKELY (!fast_element_link (sgroup->formatter, last)))
1074 goto formatter_link_failure;
1075 last = sgroup->formatter;
1080 /* Output capsfilter
1081 * This will receive the format caps from the streamprofile */
1082 GST_DEBUG ("Adding output capsfilter for %" GST_PTR_FORMAT, format);
1083 sgroup->outfilter = gst_element_factory_make ("capsfilter", NULL);
1084 g_object_set (sgroup->outfilter, "caps", format, NULL);
1086 gst_bin_add (GST_BIN (ebin), sgroup->outfilter);
1087 tosync = g_list_append (tosync, sgroup->outfilter);
1088 if (G_UNLIKELY (!fast_element_link (sgroup->outfilter, last)))
1089 goto outfilter_link_failure;
1090 last = sgroup->outfilter;
1095 * The usage of parsers in encoding/muxing scenarios is
1096 * just too undefined to just use as-is.
1098 * Take the use-case where you want to re-mux a stream of type
1099 * "my/media". You create a StreamEncodingProfile with that type
1100 * as the target (as-is). And you use decodebin2/uridecodebin
1103 * * demuxer exposes "my/media"
1104 * * a parser is available for "my/media" which has a source pad
1105 * caps of "my/media,parsed=True"
1106 * * decodebin2/uridecodebin exposes a new pad with the parsed caps
1107 * * You request a new stream from encodebin, which will match the
1108 * streamprofile and creates a group (i.e. going through this method)
1109 * There is a matching parser (the same used in the decoder) whose
1110 * source pad caps intersects with the stream profile caps, you
1111 * therefore use it...
1112 * * ... but that parser has a "my/media,parsed=False" sink pad caps
1113 * * ... and you can't link your decodebin pad to encodebin.
1115 * In the end, it comes down to parsers only taking into account the
1116 * decoding use-cases.
1118 * One way to solve that might be to :
1119 * * Make parsers sink pad caps be "framed={False,True}" and the
1120 * source pad caps be "framed=True"
1121 * * Modify decodebin2 accordingly to avoid looping and chaining
1122 * an infinite number of parsers
1124 * Another way would be to have "well-known" caps properties to specify
1125 * whether a stream has been parsed or not.
1126 * * currently we fail. aacparse uses 'framed' and mp3parse uses 'parsed'
1128 /* FIXME : Re-enable once parser situation is un-$#*@(%$#ed */
1131 * FIXME : identify smart parsers (used for re-encoding) */
1132 sgroup->parser = _get_parser (ebin, sprof);
1134 if (sgroup->parser != NULL) {
1135 GST_DEBUG ("Got a parser %s", GST_ELEMENT_NAME (sgroup->parser));
1136 gst_bin_add (GST_BIN (ebin), sgroup->parser);
1137 tosync = g_list_append (tosync, sgroup->parser);
1138 if (G_UNLIKELY (!gst_element_link (sgroup->parser, last)))
1139 goto parser_link_failure;
1140 last = sgroup->parser;
1144 /* Stream combiner */
1145 sgroup->combiner = g_object_new (GST_TYPE_STREAM_COMBINER, NULL);
1147 gst_bin_add (GST_BIN (ebin), sgroup->combiner);
1148 tosync = g_list_append (tosync, sgroup->combiner);
1149 if (G_UNLIKELY (!fast_element_link (sgroup->combiner, last)))
1150 goto combiner_link_failure;
1153 /* Stream splitter */
1154 sgroup->splitter = g_object_new (GST_TYPE_STREAM_SPLITTER, NULL);
1156 gst_bin_add (GST_BIN (ebin), sgroup->splitter);
1157 tosync = g_list_append (tosync, sgroup->splitter);
1160 * FIXME : figure out what max-size to use for the input queue */
1161 sgroup->inqueue = gst_element_factory_make ("queue", NULL);
1162 g_object_set (sgroup->inqueue, "max-size-buffers",
1163 (guint32) ebin->queue_buffers_max, "max-size-bytes",
1164 (guint32) ebin->queue_bytes_max, "max-size-time",
1165 (guint64) ebin->queue_time_max, "silent", TRUE, NULL);
1167 gst_bin_add (GST_BIN (ebin), sgroup->inqueue);
1168 tosync = g_list_append (tosync, sgroup->inqueue);
1169 if (G_UNLIKELY (!fast_element_link (sgroup->inqueue, sgroup->splitter)))
1170 goto splitter_link_failure;
1172 /* Expose input queue sink pad as ghostpad */
1173 sinkpad = gst_element_get_static_pad (sgroup->inqueue, "sink");
1174 if (sinkpadname == NULL) {
1176 g_strdup_printf ("%s_%d", gst_encoding_profile_get_type_nick (sprof),
1177 ebin->last_pad_id++);
1178 GST_DEBUG ("Adding ghost pad %s", pname);
1179 sgroup->ghostpad = gst_ghost_pad_new (pname, sinkpad);
1182 sgroup->ghostpad = gst_ghost_pad_new (sinkpadname, sinkpad);
1183 gst_object_unref (sinkpad);
1186 /* Path 1 : Already-encoded data */
1188 local_element_request_pad (sgroup->combiner, NULL, "passthroughsink",
1190 if (G_UNLIKELY (sinkpad == NULL))
1191 goto no_combiner_sinkpad;
1193 if (ebin->avoid_reencoding) {
1196 GST_DEBUG ("Asked to use Smart Encoder");
1197 sgroup->smartencoder = g_object_new (GST_TYPE_SMART_ENCODER, NULL);
1199 /* Check if stream format is compatible */
1200 srcpad = gst_element_get_static_pad (sgroup->smartencoder, "src");
1201 tmpcaps = gst_pad_get_caps (srcpad, NULL);
1202 if (!gst_caps_can_intersect (tmpcaps, format)) {
1203 GST_DEBUG ("We don't have a smart encoder for the stream format");
1204 gst_object_unref (sgroup->smartencoder);
1205 sgroup->smartencoder = NULL;
1207 gst_bin_add ((GstBin *) ebin, sgroup->smartencoder);
1208 fast_pad_link (srcpad, sinkpad);
1209 tosync = g_list_append (tosync, sgroup->smartencoder);
1210 sinkpad = gst_element_get_static_pad (sgroup->smartencoder, "sink");
1212 gst_caps_unref (tmpcaps);
1213 g_object_unref (srcpad);
1217 local_element_request_pad (sgroup->splitter, NULL, "passthroughsrc",
1219 if (G_UNLIKELY (srcpad == NULL))
1220 goto no_splitter_srcpad;
1222 /* Go straight to splitter */
1223 if (G_UNLIKELY (fast_pad_link (srcpad, sinkpad) != GST_PAD_LINK_OK))
1224 goto passthrough_link_failure;
1225 g_object_unref (sinkpad);
1226 g_object_unref (srcpad);
1229 /* Path 2 : Conversion / Encoding */
1231 /* 1. Create the encoder */
1232 GST_LOG ("Adding encoder");
1233 last = sgroup->encoder;
1234 gst_bin_add ((GstBin *) ebin, sgroup->encoder);
1235 tosync = g_list_append (tosync, sgroup->encoder);
1238 local_element_request_pad (sgroup->combiner, NULL, "encodingsink", NULL);
1239 if (G_UNLIKELY (sinkpad == NULL))
1240 goto no_combiner_sinkpad;
1241 srcpad = gst_element_get_static_pad (sgroup->encoder, "src");
1242 if (G_UNLIKELY (fast_pad_link (srcpad, sinkpad) != GST_PAD_LINK_OK))
1243 goto encoder_link_failure;
1244 g_object_unref (sinkpad);
1245 g_object_unref (srcpad);
1248 /* 3. Create the conversion/restriction elements */
1249 /* 3.1. capsfilter */
1250 if (restriction && !gst_caps_is_any (restriction)) {
1251 GST_LOG ("Adding capsfilter for restriction caps : %" GST_PTR_FORMAT,
1254 last = sgroup->capsfilter = gst_element_factory_make ("capsfilter", NULL);
1255 g_object_set (sgroup->capsfilter, "caps", restriction, NULL);
1256 gst_bin_add ((GstBin *) ebin, sgroup->capsfilter);
1257 tosync = g_list_append (tosync, sgroup->capsfilter);
1258 fast_element_link (sgroup->capsfilter, sgroup->encoder);
1261 /* 3.2. restriction elements */
1262 /* FIXME : Once we have properties for specific converters, use those */
1263 if (GST_IS_ENCODING_VIDEO_PROFILE (sprof)) {
1264 const gboolean native_video =
1265 !!(ebin->flags & GST_ENC_FLAG_NO_VIDEO_CONVERSION);
1266 GstElement *cspace = NULL, *scale, *vrate, *cspace2 = NULL;
1268 GST_LOG ("Adding conversion elements for video stream");
1270 if (!native_video) {
1271 cspace = gst_element_factory_make ("videoconvert", NULL);
1272 scale = gst_element_factory_make ("videoscale", NULL);
1274 missing_element_name = "videoscale";
1275 goto missing_element;
1277 /* 4-tap scaling and black borders */
1278 g_object_set (scale, "method", 2, "add-borders", TRUE, NULL);
1279 cspace2 = gst_element_factory_make ("videoconvert", NULL);
1281 if (!cspace || !cspace2) {
1282 missing_element_name = "videoconvert";
1283 goto missing_element;
1286 gst_bin_add_many ((GstBin *) ebin, cspace, scale, cspace2, NULL);
1287 tosync = g_list_append (tosync, cspace);
1288 tosync = g_list_append (tosync, scale);
1289 tosync = g_list_append (tosync, cspace2);
1291 sgroup->converters = g_list_prepend (sgroup->converters, cspace);
1292 sgroup->converters = g_list_prepend (sgroup->converters, scale);
1293 sgroup->converters = g_list_prepend (sgroup->converters, cspace2);
1295 if (!fast_element_link (cspace, scale) ||
1296 !fast_element_link (scale, cspace2))
1297 goto converter_link_failure;
1300 if (!gst_encoding_video_profile_get_variableframerate
1301 (GST_ENCODING_VIDEO_PROFILE (sprof))) {
1302 vrate = gst_element_factory_make ("videorate", NULL);
1304 missing_element_name = "videorate";
1305 goto missing_element;
1308 gst_bin_add ((GstBin *) ebin, vrate);
1309 tosync = g_list_prepend (tosync, vrate);
1310 sgroup->converters = g_list_prepend (sgroup->converters, vrate);
1312 if ((!native_video && !fast_element_link (cspace2, vrate))
1313 || !fast_element_link (vrate, last))
1314 goto converter_link_failure;
1320 } else if (!native_video) {
1321 if (!fast_element_link (cspace2, last))
1322 goto converter_link_failure;
1326 } else if (GST_IS_ENCODING_AUDIO_PROFILE (sprof)
1327 && !(ebin->flags & GST_ENC_FLAG_NO_AUDIO_CONVERSION)) {
1328 GstElement *aconv, *ares, *arate, *aconv2;
1330 GST_LOG ("Adding conversion elements for audio stream");
1332 arate = gst_element_factory_make ("audiorate", NULL);
1333 g_object_set (arate, "tolerance", (guint64) ebin->tolerance, NULL);
1335 missing_element_name = "audiorate";
1336 goto missing_element;
1338 aconv = gst_element_factory_make ("audioconvert", NULL);
1339 aconv2 = gst_element_factory_make ("audioconvert", NULL);
1340 ares = gst_element_factory_make ("audioresample", NULL);
1341 if (!aconv || !aconv2) {
1342 missing_element_name = "audioconvert";
1343 goto missing_element;
1346 missing_element_name = "audioresample";
1347 goto missing_element;
1350 gst_bin_add_many ((GstBin *) ebin, arate, aconv, ares, aconv2, NULL);
1351 tosync = g_list_append (tosync, arate);
1352 tosync = g_list_append (tosync, aconv);
1353 tosync = g_list_append (tosync, ares);
1354 tosync = g_list_append (tosync, aconv2);
1355 if (!fast_element_link (arate, aconv) ||
1356 !fast_element_link (aconv, ares) ||
1357 !fast_element_link (ares, aconv2) || !fast_element_link (aconv2, last))
1358 goto converter_link_failure;
1360 sgroup->converters = g_list_prepend (sgroup->converters, arate);
1361 sgroup->converters = g_list_prepend (sgroup->converters, aconv);
1362 sgroup->converters = g_list_prepend (sgroup->converters, ares);
1363 sgroup->converters = g_list_prepend (sgroup->converters, aconv2);
1368 /* Link to stream splitter */
1369 sinkpad = gst_element_get_static_pad (last, "sink");
1371 local_element_request_pad (sgroup->splitter, NULL, "encodingsrc", NULL);
1372 if (G_UNLIKELY (srcpad == NULL))
1373 goto no_splitter_srcpad;
1374 if (G_UNLIKELY (fast_pad_link (srcpad, sinkpad) != GST_PAD_LINK_OK))
1375 goto splitter_encoding_failure;
1376 g_object_unref (sinkpad);
1377 g_object_unref (srcpad);
1379 /* End of Stream 2 setup */
1381 /* Sync all elements to parent state */
1382 for (tmp = tosync; tmp; tmp = tmp->next)
1383 gst_element_sync_state_with_parent ((GstElement *) tmp->data);
1384 g_list_free (tosync);
1387 GST_DEBUG ("Adding ghostpad %s:%s", GST_DEBUG_PAD_NAME (sgroup->ghostpad));
1388 gst_pad_set_active (sgroup->ghostpad, TRUE);
1389 gst_element_add_pad ((GstElement *) ebin, sgroup->ghostpad);
1391 /* Add StreamGroup to our list of streams */
1394 ("Done creating elements, adding StreamGroup to our controlled stream list");
1396 ebin->streams = g_list_prepend (ebin->streams, sgroup);
1399 gst_caps_unref (format);
1401 gst_caps_unref (restriction);
1405 splitter_encoding_failure:
1406 GST_ERROR_OBJECT (ebin, "Error linking splitter to encoding stream");
1410 GST_ERROR_OBJECT (ebin, "Couldn't create encoder for format %" GST_PTR_FORMAT,
1412 /* missing plugin support */
1413 gst_element_post_message (GST_ELEMENT_CAST (ebin),
1414 gst_missing_encoder_message_new (GST_ELEMENT_CAST (ebin), format));
1415 GST_ELEMENT_ERROR (ebin, CORE, MISSING_PLUGIN, (NULL),
1416 ("Couldn't create encoder for format %" GST_PTR_FORMAT, format));
1420 GST_ERROR_OBJECT (ebin,
1421 "Couldn't find a compatible muxer pad to link encoder to");
1425 gst_element_post_message (GST_ELEMENT_CAST (ebin),
1426 gst_missing_element_message_new (GST_ELEMENT_CAST (ebin),
1427 missing_element_name));
1428 GST_ELEMENT_ERROR (ebin, CORE, MISSING_PLUGIN,
1429 (_("Missing element '%s' - check your GStreamer installation."),
1430 missing_element_name), (NULL));
1433 encoder_link_failure:
1434 GST_ERROR_OBJECT (ebin, "Failed to link the encoder");
1438 GST_ERROR_OBJECT (ebin, "Couldn't link encoder to muxer");
1441 formatter_link_failure:
1442 GST_ERROR_OBJECT (ebin, "Couldn't link output filter to output queue");
1445 outfilter_link_failure:
1446 GST_ERROR_OBJECT (ebin,
1447 "Couldn't link output filter to output queue/formatter");
1450 passthrough_link_failure:
1451 GST_ERROR_OBJECT (ebin, "Failed linking splitter in passthrough mode");
1455 GST_ERROR_OBJECT (ebin, "Couldn't get a source pad from the splitter");
1458 no_combiner_sinkpad:
1459 GST_ERROR_OBJECT (ebin, "Couldn't get a sink pad from the combiner");
1462 splitter_link_failure:
1463 GST_ERROR_OBJECT (ebin, "Failure linking to the splitter");
1466 combiner_link_failure:
1467 GST_ERROR_OBJECT (ebin, "Failure linking to the combiner");
1471 parser_link_failure:
1472 GST_ERROR_OBJECT (ebin, "Failure linking the parser");
1476 converter_link_failure:
1477 GST_ERROR_OBJECT (ebin, "Failure linking the video converters");
1481 /* FIXME : Actually properly cleanup everything */
1483 gst_caps_unref (format);
1485 gst_caps_unref (restriction);
1486 g_slice_free (StreamGroup, sgroup);
1491 _gst_caps_match_foreach (GQuark field_id, const GValue * value, gpointer data)
1493 GstStructure *structure = data;
1494 const GValue *other_value = gst_structure_id_get_value (structure, field_id);
1496 if (G_UNLIKELY (other_value == NULL))
1498 if (gst_value_compare (value, other_value) == GST_VALUE_EQUAL) {
1506 * checks that there is at least one structure on caps_a that has
1507 * all its fields exactly the same as one structure on caps_b
1510 _gst_caps_match (const GstCaps * caps_a, const GstCaps * caps_b)
1513 gboolean res = FALSE;
1515 for (i = 0; i < gst_caps_get_size (caps_a); i++) {
1516 GstStructure *structure_a = gst_caps_get_structure (caps_a, i);
1517 for (j = 0; j < gst_caps_get_size (caps_b); j++) {
1518 GstStructure *structure_b = gst_caps_get_structure (caps_b, j);
1520 res = gst_structure_foreach (structure_a, _gst_caps_match_foreach,
1531 _factory_can_handle_caps (GstElementFactory * factory, const GstCaps * caps,
1532 GstPadDirection dir, gboolean exact)
1534 GList *templates = factory->staticpadtemplates;
1537 GstStaticPadTemplate *template = (GstStaticPadTemplate *) templates->data;
1539 if (template->direction == dir) {
1540 GstCaps *tmp = gst_static_caps_get (&template->static_caps);
1542 if ((exact && _gst_caps_match (caps, tmp)) ||
1543 (!exact && gst_caps_can_intersect (tmp, caps))) {
1544 gst_caps_unref (tmp);
1547 gst_caps_unref (tmp);
1549 templates = g_list_next (templates);
1555 static inline GstElement *
1556 _get_formatter (GstEncodeBin * ebin, GstEncodingProfile * sprof)
1558 GList *formatters, *tmpfmtr;
1559 GstElement *formatter = NULL;
1560 GstElementFactory *formatterfact = NULL;
1561 const GstCaps *format;
1562 const gchar *preset;
1564 format = gst_encoding_profile_get_format (sprof);
1565 preset = gst_encoding_profile_get_preset (sprof);
1567 GST_DEBUG ("Getting list of formatters for format %" GST_PTR_FORMAT, format);
1570 gst_element_factory_list_filter (ebin->formatters, format, GST_PAD_SRC,
1573 if (formatters == NULL)
1576 /* FIXME : signal the user if he wants this */
1577 for (tmpfmtr = formatters; tmpfmtr; tmpfmtr = tmpfmtr->next) {
1578 formatterfact = (GstElementFactory *) tmpfmtr->data;
1580 GST_DEBUG_OBJECT (ebin, "Trying formatter %s",
1581 GST_OBJECT_NAME (formatterfact));
1584 _create_element_and_set_preset (formatterfact, preset, NULL)))
1588 gst_plugin_feature_list_free (formatters);
1595 compare_elements (gconstpointer a, gconstpointer b, gpointer udata)
1597 GstCaps *caps = udata;
1598 GstElementFactory *fac_a = (GstElementFactory *) a;
1599 GstElementFactory *fac_b = (GstElementFactory *) b;
1601 /* FIXME not quite sure this is the best algorithm to order the elements
1602 * Some caps similarity comparison algorithm would fit better than going
1603 * boolean (equals/not equals).
1605 gboolean equals_a = _factory_can_handle_caps (fac_a, caps, GST_PAD_SRC, TRUE);
1606 gboolean equals_b = _factory_can_handle_caps (fac_b, caps, GST_PAD_SRC, TRUE);
1608 if (equals_a == equals_b) {
1609 return gst_plugin_feature_get_rank ((GstPluginFeature *) fac_b) -
1610 gst_plugin_feature_get_rank ((GstPluginFeature *) fac_a);
1611 } else if (equals_a) {
1613 } else if (equals_b) {
1619 static inline GstElement *
1620 _get_muxer (GstEncodeBin * ebin)
1622 GList *muxers, *formatters, *tmpmux;
1623 GstElement *muxer = NULL;
1624 GstElementFactory *muxerfact = NULL;
1626 const GstCaps *format;
1627 const gchar *preset;
1629 format = gst_encoding_profile_get_format (ebin->profile);
1630 preset = gst_encoding_profile_get_preset (ebin->profile);
1632 GST_DEBUG ("Getting list of muxers for format %" GST_PTR_FORMAT, format);
1635 gst_element_factory_list_filter (ebin->muxers, format, GST_PAD_SRC, TRUE);
1638 gst_element_factory_list_filter (ebin->formatters, format, GST_PAD_SRC,
1641 muxers = g_list_sort_with_data (muxers, compare_elements, (gpointer) format);
1643 g_list_sort_with_data (formatters, compare_elements, (gpointer) format);
1645 muxers = g_list_concat (muxers, formatters);
1650 /* FIXME : signal the user if he wants this */
1651 for (tmpmux = muxers; tmpmux; tmpmux = tmpmux->next) {
1652 gboolean cansinkstreams = TRUE;
1653 const GList *profiles =
1654 gst_encoding_container_profile_get_profiles
1655 (GST_ENCODING_CONTAINER_PROFILE (ebin->profile));
1657 muxerfact = (GstElementFactory *) tmpmux->data;
1659 GST_DEBUG ("Trying muxer %s", GST_OBJECT_NAME (muxerfact));
1661 /* See if the muxer can sink all of our stream profile caps */
1662 for (tmp = profiles; tmp; tmp = tmp->next) {
1663 GstEncodingProfile *sprof = (GstEncodingProfile *) tmp->data;
1665 if (!_factory_can_handle_caps (muxerfact,
1666 gst_encoding_profile_get_format (sprof), GST_PAD_SINK, FALSE)) {
1667 GST_DEBUG ("Skipping muxer because it can't sink caps %"
1668 GST_PTR_FORMAT, gst_encoding_profile_get_format (sprof));
1669 cansinkstreams = FALSE;
1674 /* Only use a muxer than can use all streams and than can accept the
1675 * preset (which may be present or not) */
1676 if (cansinkstreams && (muxer =
1677 _create_element_and_set_preset (muxerfact, preset, "muxer")))
1681 gst_plugin_feature_list_free (muxers);
1688 create_elements_and_pads (GstEncodeBin * ebin)
1690 gboolean ret = TRUE;
1691 GstElement *muxer = NULL;
1693 const GList *tmp, *profiles;
1694 GstEncodingProfile *sprof;
1696 GST_DEBUG ("Current profile : %s",
1697 gst_encoding_profile_get_name (ebin->profile));
1699 if (GST_IS_ENCODING_CONTAINER_PROFILE (ebin->profile)) {
1700 /* 1. Get the compatible muxer */
1701 muxer = _get_muxer (ebin);
1702 if (G_UNLIKELY (muxer == NULL))
1705 /* Record the muxer */
1706 ebin->muxer = muxer;
1707 gst_bin_add ((GstBin *) ebin, muxer);
1709 /* 2. Ghost the muxer source pad */
1711 /* FIXME : We should figure out if it's a static/request/dyamic pad,
1712 * but for the time being let's assume it's a static pad :) */
1713 muxerpad = gst_element_get_static_pad (muxer, "src");
1714 if (G_UNLIKELY (muxerpad == NULL))
1717 if (!gst_ghost_pad_set_target (GST_GHOST_PAD (ebin->srcpad), muxerpad))
1718 goto no_muxer_ghost_pad;
1720 gst_object_unref (muxerpad);
1721 /* 3. Activate fixed presence streams */
1723 gst_encoding_container_profile_get_profiles
1724 (GST_ENCODING_CONTAINER_PROFILE (ebin->profile));
1725 for (tmp = profiles; tmp; tmp = tmp->next) {
1726 sprof = (GstEncodingProfile *) tmp->data;
1728 GST_DEBUG ("Trying stream profile with presence %d",
1729 gst_encoding_profile_get_presence (sprof));
1731 if (gst_encoding_profile_get_presence (sprof) != 0) {
1732 if (G_UNLIKELY (_create_stream_group (ebin, sprof, NULL, NULL) == NULL))
1737 if (G_UNLIKELY (_create_stream_group (ebin, ebin->profile, NULL,
1746 GST_WARNING ("No available muxer for %" GST_PTR_FORMAT,
1747 gst_encoding_profile_get_format (ebin->profile));
1748 /* missing plugin support */
1749 gst_element_post_message (GST_ELEMENT_CAST (ebin),
1750 gst_missing_encoder_message_new (GST_ELEMENT_CAST (ebin),
1751 gst_encoding_profile_get_format (ebin->profile)));
1752 GST_ELEMENT_ERROR (ebin, CORE, MISSING_PLUGIN, (NULL),
1753 ("No available muxer for format %" GST_PTR_FORMAT,
1754 gst_encoding_profile_get_format (ebin->profile)));
1760 GST_WARNING ("Can't get source pad from muxer (%s)",
1761 GST_ELEMENT_NAME (muxer));
1762 gst_bin_remove (GST_BIN (ebin), muxer);
1768 GST_WARNING ("Couldn't set %s:%s as source ghostpad target",
1769 GST_DEBUG_PAD_NAME (muxerpad));
1770 gst_bin_remove (GST_BIN (ebin), muxer);
1771 gst_object_unref (muxerpad);
1777 GST_WARNING ("Could not create Streams");
1779 gst_bin_remove (GST_BIN (ebin), muxer);
1786 release_pads (const GValue * item, GstElement * elt)
1788 GstPad *pad = g_value_get_object (item);
1789 GstPad *peer = NULL;
1791 GST_DEBUG_OBJECT (elt, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
1793 /* Unlink from its peer pad */
1794 if ((peer = gst_pad_get_peer (pad))) {
1795 if (GST_PAD_DIRECTION (peer) == GST_PAD_SRC)
1796 gst_pad_unlink (peer, pad);
1798 gst_pad_unlink (pad, peer);
1799 gst_object_unref (peer);
1802 /* Release it from the object */
1803 gst_element_release_request_pad (elt, pad);
1807 stream_group_free (GstEncodeBin * ebin, StreamGroup * sgroup)
1813 GST_DEBUG_OBJECT (ebin, "Freeing StreamGroup %p", sgroup);
1816 /* outqueue - Muxer */
1817 tmppad = gst_element_get_static_pad (sgroup->outqueue, "src");
1818 pad = gst_pad_get_peer (tmppad);
1820 /* Remove muxer request sink pad */
1821 gst_pad_unlink (tmppad, pad);
1822 gst_element_release_request_pad (ebin->muxer, pad);
1823 gst_object_unref (tmppad);
1824 gst_object_unref (pad);
1826 if (sgroup->outqueue)
1827 gst_element_set_state (sgroup->outqueue, GST_STATE_NULL);
1829 if (sgroup->formatter) {
1830 /* capsfilter - formatter - outqueue */
1831 gst_element_set_state (sgroup->formatter, GST_STATE_NULL);
1832 gst_element_set_state (sgroup->outfilter, GST_STATE_NULL);
1833 gst_element_unlink (sgroup->formatter, sgroup->outqueue);
1834 gst_element_unlink (sgroup->outfilter, sgroup->formatter);
1836 /* Capsfilter - outqueue */
1837 gst_element_set_state (sgroup->outfilter, GST_STATE_NULL);
1838 gst_element_unlink (sgroup->outfilter, sgroup->outqueue);
1840 gst_element_set_state (sgroup->outqueue, GST_STATE_NULL);
1841 gst_bin_remove (GST_BIN (ebin), sgroup->outqueue);
1843 /* streamcombiner - parser - capsfilter */
1844 if (sgroup->parser) {
1845 gst_element_set_state (sgroup->parser, GST_STATE_NULL);
1846 gst_element_unlink (sgroup->parser, sgroup->outfilter);
1847 gst_element_unlink (sgroup->combiner, sgroup->parser);
1848 gst_bin_remove ((GstBin *) ebin, sgroup->parser);
1852 if (sgroup->ghostpad)
1853 gst_element_remove_pad (GST_ELEMENT_CAST (ebin), sgroup->ghostpad);
1855 if (sgroup->inqueue)
1856 gst_element_set_state (sgroup->inqueue, GST_STATE_NULL);
1858 if (sgroup->encoder)
1859 gst_element_set_state (sgroup->encoder, GST_STATE_NULL);
1860 if (sgroup->outfilter)
1861 gst_element_set_state (sgroup->outfilter, GST_STATE_NULL);
1862 if (sgroup->smartencoder)
1863 gst_element_set_state (sgroup->smartencoder, GST_STATE_NULL);
1865 if (sgroup->capsfilter) {
1866 gst_element_set_state (sgroup->capsfilter, GST_STATE_NULL);
1867 gst_element_unlink (sgroup->capsfilter, sgroup->encoder);
1868 gst_bin_remove ((GstBin *) ebin, sgroup->capsfilter);
1871 for (tmp = sgroup->converters; tmp; tmp = tmp->next) {
1872 GstElement *elt = (GstElement *) tmp->data;
1874 gst_element_set_state (elt, GST_STATE_NULL);
1875 gst_bin_remove ((GstBin *) ebin, elt);
1877 if (sgroup->converters)
1878 g_list_free (sgroup->converters);
1880 if (sgroup->combiner) {
1881 GstIterator *it = gst_element_iterate_sink_pads (sgroup->combiner);
1882 GstIteratorResult itret = GST_ITERATOR_OK;
1884 while (itret == GST_ITERATOR_OK || itret == GST_ITERATOR_RESYNC) {
1886 gst_iterator_foreach (it, (GstIteratorForeachFunction) release_pads,
1888 gst_iterator_resync (it);
1890 gst_iterator_free (it);
1891 gst_element_set_state (sgroup->combiner, GST_STATE_NULL);
1892 gst_bin_remove ((GstBin *) ebin, sgroup->combiner);
1895 if (sgroup->splitter) {
1896 GstIterator *it = gst_element_iterate_src_pads (sgroup->splitter);
1897 GstIteratorResult itret = GST_ITERATOR_OK;
1898 while (itret == GST_ITERATOR_OK || itret == GST_ITERATOR_RESYNC) {
1900 gst_iterator_foreach (it, (GstIteratorForeachFunction) release_pads,
1902 gst_iterator_resync (it);
1904 gst_iterator_free (it);
1906 gst_element_set_state (sgroup->splitter, GST_STATE_NULL);
1907 gst_bin_remove ((GstBin *) ebin, sgroup->splitter);
1910 if (sgroup->inqueue)
1911 gst_bin_remove ((GstBin *) ebin, sgroup->inqueue);
1913 if (sgroup->encoder)
1914 gst_bin_remove ((GstBin *) ebin, sgroup->encoder);
1916 if (sgroup->smartencoder)
1917 gst_bin_remove ((GstBin *) ebin, sgroup->smartencoder);
1919 if (sgroup->outfilter)
1920 gst_bin_remove ((GstBin *) ebin, sgroup->outfilter);
1922 g_slice_free (StreamGroup, sgroup);
1926 stream_group_remove (GstEncodeBin * ebin, StreamGroup * sgroup)
1928 ebin->streams = g_list_remove (ebin->streams, sgroup);
1930 stream_group_free (ebin, sgroup);
1934 gst_encode_bin_tear_down_profile (GstEncodeBin * ebin)
1936 if (G_UNLIKELY (ebin->profile == NULL))
1939 GST_DEBUG ("Tearing down profile %s",
1940 gst_encoding_profile_get_name (ebin->profile));
1942 while (ebin->streams)
1943 stream_group_remove (ebin, (StreamGroup *) ebin->streams->data);
1945 /* Set ghostpad target to NULL */
1946 gst_ghost_pad_set_target (GST_GHOST_PAD (ebin->srcpad), NULL);
1948 /* Remove muxer if present */
1950 gst_element_set_state (ebin->muxer, GST_STATE_NULL);
1951 gst_bin_remove (GST_BIN (ebin), ebin->muxer);
1955 /* free/clear profile */
1956 gst_encoding_profile_unref (ebin->profile);
1957 ebin->profile = NULL;
1961 gst_encode_bin_setup_profile (GstEncodeBin * ebin, GstEncodingProfile * profile)
1965 g_return_val_if_fail (ebin->profile == NULL, FALSE);
1967 GST_DEBUG ("Setting up profile %s (type:%s)",
1968 gst_encoding_profile_get_name (profile),
1969 gst_encoding_profile_get_type_nick (profile));
1971 ebin->profile = profile;
1972 gst_mini_object_ref ((GstMiniObject *) ebin->profile);
1974 /* Create elements */
1975 res = create_elements_and_pads (ebin);
1977 gst_encode_bin_tear_down_profile (ebin);
1983 gst_encode_bin_set_profile (GstEncodeBin * ebin, GstEncodingProfile * profile)
1985 g_return_val_if_fail (GST_IS_ENCODING_PROFILE (profile), FALSE);
1987 GST_DEBUG_OBJECT (ebin, "profile : %s",
1988 gst_encoding_profile_get_name (profile));
1990 if (G_UNLIKELY (ebin->active)) {
1991 GST_WARNING_OBJECT (ebin, "Element already active, can't change profile");
1995 /* If we're not active, we can deactivate the previous profile */
1996 if (ebin->profile) {
1997 gst_encode_bin_tear_down_profile (ebin);
2000 return gst_encode_bin_setup_profile (ebin, profile);
2003 static inline gboolean
2004 gst_encode_bin_activate (GstEncodeBin * ebin)
2006 ebin->active = ebin->profile != NULL;
2007 return ebin->active;
2011 gst_encode_bin_deactivate (GstEncodeBin * ebin)
2013 ebin->active = FALSE;
2016 static GstStateChangeReturn
2017 gst_encode_bin_change_state (GstElement * element, GstStateChange transition)
2019 GstStateChangeReturn ret;
2020 GstEncodeBin *ebin = (GstEncodeBin *) element;
2022 switch (transition) {
2023 case GST_STATE_CHANGE_READY_TO_PAUSED:
2024 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
2025 if (!gst_encode_bin_activate (ebin)) {
2026 ret = GST_STATE_CHANGE_FAILURE;
2035 GST_ELEMENT_CLASS (gst_encode_bin_parent_class)->change_state (element,
2037 if (ret == GST_STATE_CHANGE_FAILURE)
2040 switch (transition) {
2041 case GST_STATE_CHANGE_PAUSED_TO_READY:
2042 gst_encode_bin_deactivate (ebin);
2054 plugin_init (GstPlugin * plugin)
2058 GST_DEBUG_CATEGORY_INIT (gst_encode_bin_debug, "encodebin", 0, "encoder bin");
2061 GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
2063 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
2064 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
2065 #endif /* ENABLE_NLS */
2068 res = gst_element_register (plugin, "encodebin", GST_RANK_NONE,
2069 GST_TYPE_ENCODE_BIN);
2074 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
2077 "various encoding-related elements", plugin_init, VERSION, GST_LICENSE,
2078 GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)