3 * Copyright (c) 2008,2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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.
22 * SECTION:element-flvmux
24 * flvmux muxes different streams into an FLV file.
27 * <title>Example launch line</title>
29 * gst-launch -v filesrc location=/path/to/audio ! decodebin2 ! queue ! flvmux name=m ! filesink location=file.flv filesrc location=/path/to/video ! decodebin2 ! queue ! m.
30 * ]| This pipeline muxes an audio and video file into a single FLV file.
41 #include "gstflvmux.h"
43 GST_DEBUG_CATEGORY_STATIC (flvmux_debug);
44 #define GST_CAT_DEFAULT flvmux_debug
52 #define DEFAULT_STREAMABLE FALSE
53 #define MAX_INDEX_ENTRIES 128
55 static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
58 GST_STATIC_CAPS ("video/x-flv")
61 static GstStaticPadTemplate videosink_templ = GST_STATIC_PAD_TEMPLATE ("video",
64 GST_STATIC_CAPS ("video/x-flash-video; "
65 "video/x-flash-screen; "
66 "video/x-vp6-flash; " "video/x-vp6-alpha; "
67 "video/x-h264, stream-format=avc;")
70 static GstStaticPadTemplate audiosink_templ = GST_STATIC_PAD_TEMPLATE ("audio",
74 ("audio/x-adpcm, layout = (string) swf, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
75 "audio/mpeg, mpegversion = (int) 1, layer = (int) 3, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 22050, 44100 }, parsed = (boolean) TRUE; "
76 "audio/mpeg, mpegversion = (int) { 2, 4 }, framed = (boolean) TRUE; "
77 "audio/x-nellymoser, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 16000, 22050, 44100 }; "
78 "audio/x-raw-int, endianness = (int) LITTLE_ENDIAN, channels = (int) { 1, 2 }, width = (int) 8, depth = (int) 8, rate = (int) { 5512, 11025, 22050, 44100 }, signed = (boolean) FALSE; "
79 "audio/x-raw-int, endianness = (int) LITTLE_ENDIAN, channels = (int) { 1, 2 }, width = (int) 16, depth = (int) 16, rate = (int) { 5512, 11025, 22050, 44100 }, signed = (boolean) TRUE; "
80 "audio/x-alaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
81 "audio/x-mulaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
82 "audio/x-speex, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 };")
85 #define gst_flv_mux_parent_class parent_class
86 G_DEFINE_TYPE_WITH_CODE (GstFlvMux, gst_flv_mux, GST_TYPE_ELEMENT,
87 G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL));
89 static void gst_flv_mux_finalize (GObject * object);
91 gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data);
93 static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event);
94 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
95 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps);
96 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
98 static gboolean gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps);
99 static gboolean gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps);
101 static void gst_flv_mux_get_property (GObject * object,
102 guint prop_id, GValue * value, GParamSpec * pspec);
103 static void gst_flv_mux_set_property (GObject * object,
104 guint prop_id, const GValue * value, GParamSpec * pspec);
106 static GstStateChangeReturn
107 gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
109 static void gst_flv_mux_reset (GstElement * element);
115 } GstFlvMuxIndexEntry;
118 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
120 g_slice_free (GstFlvMuxIndexEntry, entry);
124 _gst_buffer_new_wrapped (gpointer mem, gsize size, GFreeFunc free_func)
128 buf = gst_buffer_new ();
129 gst_buffer_take_memory (buf, -1,
130 gst_memory_new_wrapped (free_func ? 0 : GST_MEMORY_FLAG_READONLY,
131 mem, free_func, size, 0, size));
137 _gst_buffer_new_and_alloc (gsize size, GstBuffer ** buffer, guint8 ** data)
139 g_return_if_fail (data != NULL);
140 g_return_if_fail (buffer != NULL);
142 *data = g_malloc (size);
143 *buffer = _gst_buffer_new_wrapped (*data, size, g_free);
147 gst_flv_mux_class_init (GstFlvMuxClass * klass)
149 GObjectClass *gobject_class;
150 GstElementClass *gstelement_class;
152 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
154 gobject_class = (GObjectClass *) klass;
155 gstelement_class = (GstElementClass *) klass;
157 gobject_class->get_property = gst_flv_mux_get_property;
158 gobject_class->set_property = gst_flv_mux_set_property;
159 gobject_class->finalize = gst_flv_mux_finalize;
161 /* FIXME: ideally the right mode of operation should be detected
162 * automatically using queries when parameter not specified. */
164 * GstFlvMux:streamable
166 * If True, the output will be streaming friendly. (ie without indexes and
171 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
172 g_param_spec_boolean ("streamable", "streamable",
173 "If set to true, the output should be as if it is to be streamed "
174 "and hence no indexes written or duration written.",
175 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
177 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
178 gstelement_class->request_new_pad =
179 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
180 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
182 gst_element_class_add_pad_template (gstelement_class,
183 gst_static_pad_template_get (&videosink_templ));
184 gst_element_class_add_pad_template (gstelement_class,
185 gst_static_pad_template_get (&audiosink_templ));
186 gst_element_class_add_pad_template (gstelement_class,
187 gst_static_pad_template_get (&src_templ));
188 gst_element_class_set_details_simple (gstelement_class, "FLV muxer",
190 "Muxes video/audio streams into a FLV stream",
191 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
193 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
197 gst_flv_mux_init (GstFlvMux * mux)
199 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
200 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
201 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
204 mux->streamable = DEFAULT_STREAMABLE;
206 mux->new_tags = FALSE;
208 mux->collect = gst_collect_pads_new ();
209 gst_collect_pads_set_function (mux->collect,
210 (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_flv_mux_collected), mux);
212 gst_flv_mux_reset (GST_ELEMENT (mux));
216 gst_flv_mux_finalize (GObject * object)
218 GstFlvMux *mux = GST_FLV_MUX (object);
220 gst_object_unref (mux->collect);
222 G_OBJECT_CLASS (parent_class)->finalize (object);
226 gst_flv_mux_reset (GstElement * element)
228 GstFlvMux *mux = GST_FLV_MUX (element);
231 while ((sl = mux->collect->data) != NULL) {
232 GstFlvPad *cpad = (GstFlvPad *) sl->data;
234 gst_element_release_request_pad (element, cpad->collect.pad);
237 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
238 g_list_free (mux->index);
242 mux->have_audio = mux->have_video = FALSE;
243 mux->duration = GST_CLOCK_TIME_NONE;
244 mux->new_tags = FALSE;
246 mux->state = GST_FLV_MUX_STATE_HEADER;
249 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
253 gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event)
257 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
261 /* disable seeking for now */
267 return gst_pad_event_default (pad, event);
271 gst_flv_mux_handle_sink_event (GstPad * pad, GstEvent * event)
273 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
276 switch (GST_EVENT_TYPE (event)) {
282 gst_event_parse_caps (event, &caps);
284 /* find stream data */
285 flvpad = (GstFlvPad *) gst_pad_get_element_private (pad);
289 ret = gst_flv_mux_video_pad_setcaps (pad, caps);
291 ret = gst_flv_mux_audio_pad_setcaps (pad, caps);
295 gst_event_unref (event);
300 GstTagSetter *setter = GST_TAG_SETTER (mux);
301 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
303 gst_event_parse_tag (event, &list);
304 gst_tag_setter_merge_tags (setter, list, mode);
305 mux->new_tags = TRUE;
312 /* now GstCollectPads can take care of the rest, e.g. EOS */
314 ret = mux->collect_event (pad, event);
315 gst_object_unref (mux);
321 gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
323 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
324 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
328 s = gst_caps_get_structure (caps, 0);
330 if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
331 cpad->video_codec = 2;
332 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
333 cpad->video_codec = 3;
334 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
335 cpad->video_codec = 4;
336 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
337 cpad->video_codec = 5;
338 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
339 cpad->video_codec = 7;
344 if (ret && gst_structure_has_field (s, "codec_data")) {
345 const GValue *val = gst_structure_get_value (s, "codec_data");
348 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
351 gst_object_unref (mux);
357 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
359 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
360 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
364 s = gst_caps_get_structure (caps, 0);
366 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
367 const gchar *layout = gst_structure_get_string (s, "layout");
368 if (layout && strcmp (layout, "swf") == 0) {
369 cpad->audio_codec = 1;
373 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
376 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
377 if (mpegversion == 1) {
380 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
383 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
384 cpad->audio_codec = 14;
386 cpad->audio_codec = 2;
390 } else if (mpegversion == 4 || mpegversion == 2) {
391 cpad->audio_codec = 10;
398 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
401 if (gst_structure_get_int (s, "rate", &rate)
402 && gst_structure_get_int (s, "channels", &channels)) {
403 if (channels == 1 && rate == 16000)
404 cpad->audio_codec = 4;
405 else if (channels == 1 && rate == 8000)
406 cpad->audio_codec = 5;
408 cpad->audio_codec = 6;
410 cpad->audio_codec = 6;
412 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw-int") == 0) {
415 if (gst_structure_get_int (s, "endianness", &endianness)
416 && endianness == G_LITTLE_ENDIAN)
417 cpad->audio_codec = 3;
420 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
421 cpad->audio_codec = 7;
422 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
423 cpad->audio_codec = 8;
424 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
425 cpad->audio_codec = 11;
431 gint rate, channels, width;
433 if (gst_structure_get_int (s, "rate", &rate)) {
434 if (cpad->audio_codec == 10)
436 else if (rate == 5512)
438 else if (rate == 11025)
440 else if (rate == 22050)
442 else if (rate == 44100)
444 else if (rate == 8000 && (cpad->audio_codec == 5
445 || cpad->audio_codec == 14))
447 else if (rate == 16000 && cpad->audio_codec == 4)
451 } else if (cpad->audio_codec == 10) {
457 if (gst_structure_get_int (s, "channels", &channels)) {
458 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
459 || cpad->audio_codec == 6)
461 else if (cpad->audio_codec == 10)
463 else if (channels == 1)
465 else if (channels == 2)
469 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
470 || cpad->audio_codec == 6) {
472 } else if (cpad->audio_codec == 10) {
478 if (gst_structure_get_int (s, "width", &width)) {
479 if (cpad->audio_codec != 3)
483 else if (width == 16)
487 } else if (cpad->audio_codec != 3) {
494 if (ret && gst_structure_has_field (s, "codec_data")) {
495 const GValue *val = gst_structure_get_value (s, "codec_data");
498 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
501 gst_object_unref (mux);
507 gst_flv_mux_request_new_pad (GstElement * element,
508 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
510 GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
511 GstFlvMux *mux = GST_FLV_MUX (element);
514 const gchar *name = NULL;
517 if (mux->state != GST_FLV_MUX_STATE_HEADER) {
518 GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
522 if (templ == gst_element_class_get_pad_template (klass, "audio")) {
523 if (mux->have_audio) {
524 GST_WARNING_OBJECT (mux, "Already have an audio pad");
527 mux->have_audio = TRUE;
530 } else if (templ == gst_element_class_get_pad_template (klass, "video")) {
531 if (mux->have_video) {
532 GST_WARNING_OBJECT (mux, "Already have a video pad");
535 mux->have_video = TRUE;
539 GST_WARNING_OBJECT (mux, "Invalid template");
543 pad = gst_pad_new_from_template (templ, name);
545 gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstFlvPad));
549 cpad->audio_codec = G_MAXUINT;
550 cpad->rate = G_MAXUINT;
551 cpad->width = G_MAXUINT;
552 cpad->channels = G_MAXUINT;
553 cpad->audio_codec_data = NULL;
555 cpad->video_codec = G_MAXUINT;
556 cpad->video_codec_data = NULL;
558 cpad->last_timestamp = 0;
560 /* FIXME: hacked way to override/extend the event function of
561 * GstCollectPads; because it sets its own event function giving the
562 * element no access to events.
564 mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (pad);
565 gst_pad_set_event_function (pad,
566 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event));
568 gst_pad_set_active (pad, TRUE);
569 gst_element_add_pad (element, pad);
575 gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
577 GstFlvMux *mux = GST_FLV_MUX (GST_PAD_PARENT (pad));
578 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
580 if (cpad && cpad->audio_codec_data)
581 gst_buffer_unref (cpad->audio_codec_data);
582 if (cpad && cpad->video_codec_data)
583 gst_buffer_unref (cpad->video_codec_data);
585 gst_collect_pads_remove_pad (mux->collect, pad);
586 gst_element_remove_pad (element, pad);
590 gst_flv_mux_push (GstFlvMux * mux, GstBuffer * buffer)
592 /* pushing the buffer that rewrites the header will make it no longer be the
593 * total output size in bytes, but it doesn't matter at that point */
594 mux->byte_count += gst_buffer_get_size (buffer);
596 return gst_pad_push (mux->srcpad, buffer);
600 gst_flv_mux_create_header (GstFlvMux * mux)
605 _gst_buffer_new_and_alloc (9 + 4, &header, &data);
610 data[3] = 0x01; /* Version */
612 data[4] = (mux->have_audio << 2) | mux->have_video; /* flags */
613 GST_WRITE_UINT32_BE (data + 5, 9); /* data offset */
614 GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
620 gst_flv_mux_preallocate_index (GstFlvMux * mux)
624 gint preallocate_size;
626 /* preallocate index of size:
627 * - 'keyframes' ECMA array key: 2 + 9 = 11 bytes
628 * - nested ECMA array header, length and end marker: 8 bytes
629 * - 'times' and 'filepositions' keys: 22 bytes
630 * - two strict arrays headers and lengths: 10 bytes
631 * - each index entry: 18 bytes
633 preallocate_size = 11 + 8 + 22 + 10 + MAX_INDEX_ENTRIES * 18;
634 GST_DEBUG_OBJECT (mux, "preallocating %d bytes for the index",
637 _gst_buffer_new_and_alloc (preallocate_size, &tmp, &data);
639 /* prefill the space with a gstfiller: <spaces> script tag variable */
640 GST_WRITE_UINT16_BE (data, 9); /* 9 characters */
641 memcpy (data + 2, "gstfiller", 9);
642 GST_WRITE_UINT8 (data + 11, 2); /* a string value */
643 GST_WRITE_UINT16_BE (data + 12, preallocate_size - 14);
644 memset (data + 14, ' ', preallocate_size - 14); /* the rest is spaces */
649 gst_flv_mux_create_number_script_value (const gchar * name, gdouble value)
654 _gst_buffer_new_and_alloc (2 + strlen (name) + 1 + 8, &tmp, &data);
656 GST_WRITE_UINT16_BE (data, strlen (name)); /* name length */
657 memcpy (&data[2], name, strlen (name));
658 data[2 + strlen (name)] = 0; /* double */
659 GST_WRITE_DOUBLE_BE (data + 2 + strlen (name) + 1, value);
665 gst_flv_mux_create_metadata (GstFlvMux * mux)
667 const GstTagList *tags;
668 GstBuffer *script_tag, *tmp;
670 gint i, n_tags, tags_written = 0;
672 tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
674 GST_DEBUG_OBJECT (mux, "tags = %" GST_PTR_FORMAT, tags);
676 /* FIXME perhaps some bytewriter'ing here ... */
678 _gst_buffer_new_and_alloc (11, &script_tag, &data);
682 /* Data size, unknown for now */
688 data[4] = data[5] = data[6] = data[7] = 0;
691 data[8] = data[9] = data[10] = 0;
693 _gst_buffer_new_and_alloc (13, &tmp, &data);
694 data[0] = 2; /* string */
696 data[2] = 10; /* length 10 */
697 memcpy (&data[3], "onMetaData", 10);
699 script_tag = gst_buffer_join (script_tag, tmp);
701 n_tags = (tags) ? gst_structure_n_fields ((GstStructure *) tags) : 0;
702 _gst_buffer_new_and_alloc (5, &tmp, &data);
703 data[0] = 8; /* ECMA array */
704 GST_WRITE_UINT32_BE (data + 1, n_tags);
705 script_tag = gst_buffer_join (script_tag, tmp);
707 /* Some players expect the 'duration' to be always set. Fill it out later,
708 after querying the pads or after getting EOS */
709 if (!mux->streamable) {
710 tmp = gst_flv_mux_create_number_script_value ("duration", 86400);
711 script_tag = gst_buffer_join (script_tag, tmp);
715 /* Sometimes the information about the total file size is useful for the
716 player. It will be filled later, after getting EOS */
717 if (!mux->streamable) {
718 tmp = gst_flv_mux_create_number_script_value ("filesize", 0);
719 script_tag = gst_buffer_join (script_tag, tmp);
723 if (!mux->streamable) {
724 tmp = gst_flv_mux_preallocate_index (mux);
725 script_tag = gst_buffer_join (script_tag, tmp);
727 GST_DEBUG_OBJECT (mux, "not preallocating index, streamable mode");
730 for (i = 0; tags && i < n_tags; i++) {
731 const gchar *tag_name =
732 gst_structure_nth_field_name ((const GstStructure *) tags, i);
733 if (!strcmp (tag_name, GST_TAG_DURATION)) {
736 if (!gst_tag_list_get_uint64 (tags, GST_TAG_DURATION, &dur))
739 } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
740 !strcmp (tag_name, GST_TAG_TITLE)) {
742 const gchar *t = NULL;
744 if (!strcmp (tag_name, GST_TAG_ARTIST))
746 else if (!strcmp (tag_name, GST_TAG_TITLE))
749 if (!gst_tag_list_get_string (tags, tag_name, &s))
752 _gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s),
754 data[0] = 0; /* tag name length */
755 data[1] = strlen (t);
756 memcpy (&data[2], t, strlen (t));
757 data[2 + strlen (t)] = 2; /* string */
758 data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
759 data[4 + strlen (t)] = (strlen (s)) & 0xff;
760 memcpy (&data[5 + strlen (t)], s, strlen (s));
761 script_tag = gst_buffer_join (script_tag, tmp);
768 if (mux->duration == GST_CLOCK_TIME_NONE) {
772 for (l = mux->collect->data; l; l = l->next) {
773 GstCollectData *cdata = l->data;
775 if (gst_pad_query_peer_duration (cdata->pad, GST_FORMAT_TIME,
776 (gint64 *) & dur) && dur != GST_CLOCK_TIME_NONE) {
777 if (mux->duration == GST_CLOCK_TIME_NONE)
780 mux->duration = MAX (dur, mux->duration);
785 if (!mux->streamable && mux->duration != GST_CLOCK_TIME_NONE) {
787 d = gst_guint64_to_gdouble (mux->duration);
788 d /= (gdouble) GST_SECOND;
790 GST_DEBUG_OBJECT (mux, "determined the duration to be %f", d);
791 data = gst_buffer_map (script_tag, NULL, NULL, GST_MAP_WRITE);
792 GST_WRITE_DOUBLE_BE (data + 29 + 2 + 8 + 1, d);
793 gst_buffer_unmap (script_tag, data, -1);
796 if (mux->have_video) {
797 GstPad *video_pad = NULL;
799 GSList *l = mux->collect->data;
801 for (; l; l = l->next) {
803 if (cpad && cpad->video) {
804 video_pad = cpad->collect.pad;
809 if (video_pad && gst_pad_has_current_caps (video_pad)) {
815 GST_DEBUG_OBJECT (mux, "putting videocodecid %d in the metadata",
818 tmp = gst_flv_mux_create_number_script_value ("videocodecid",
820 script_tag = gst_buffer_join (script_tag, tmp);
823 caps = gst_pad_get_current_caps (video_pad);
824 s = gst_caps_get_structure (caps, 0);
825 gst_caps_unref (caps);
827 if (gst_structure_get_int (s, "width", &size)) {
828 GST_DEBUG_OBJECT (mux, "putting width %d in the metadata", size);
830 tmp = gst_flv_mux_create_number_script_value ("width", size);
831 script_tag = gst_buffer_join (script_tag, tmp);
835 if (gst_structure_get_int (s, "height", &size)) {
836 GST_DEBUG_OBJECT (mux, "putting height %d in the metadata", size);
838 tmp = gst_flv_mux_create_number_script_value ("height", size);
839 script_tag = gst_buffer_join (script_tag, tmp);
843 if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &num, &den)) {
847 GST_DEBUG_OBJECT (mux, "putting AspectRatioX %f in the metadata", d);
849 tmp = gst_flv_mux_create_number_script_value ("AspectRatioX", d);
850 script_tag = gst_buffer_join (script_tag, tmp);
854 GST_DEBUG_OBJECT (mux, "putting AspectRatioY %f in the metadata", d);
856 tmp = gst_flv_mux_create_number_script_value ("AspectRatioY", d);
857 script_tag = gst_buffer_join (script_tag, tmp);
861 if (gst_structure_get_fraction (s, "framerate", &num, &den)) {
864 gst_util_fraction_to_double (num, den, &d);
865 GST_DEBUG_OBJECT (mux, "putting framerate %f in the metadata", d);
867 tmp = gst_flv_mux_create_number_script_value ("framerate", d);
868 script_tag = gst_buffer_join (script_tag, tmp);
874 if (mux->have_audio) {
875 GstPad *audio_pad = NULL;
877 GSList *l = mux->collect->data;
879 for (; l; l = l->next) {
881 if (cpad && !cpad->video) {
882 audio_pad = cpad->collect.pad;
888 GST_DEBUG_OBJECT (mux, "putting audiocodecid %d in the metadata",
891 tmp = gst_flv_mux_create_number_script_value ("audiocodecid",
893 script_tag = gst_buffer_join (script_tag, tmp);
899 const gchar *s = "GStreamer FLV muxer";
901 _gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s), &tmp, &data);
902 data[0] = 0; /* 15 bytes name */
904 memcpy (&data[2], "metadatacreator", 15);
905 data[17] = 2; /* string */
906 data[18] = (strlen (s) >> 8) & 0xff;
907 data[19] = (strlen (s)) & 0xff;
908 memcpy (&data[20], s, strlen (s));
909 script_tag = gst_buffer_join (script_tag, tmp);
915 GTimeVal tv = { 0, };
919 static const gchar *weekdays[] = {
920 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
922 static const gchar *months[] = {
923 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
924 "Aug", "Sep", "Oct", "Nov", "Dec"
927 g_get_current_time (&tv);
931 s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
932 months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
935 _gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s), &tmp, &data);
936 data[0] = 0; /* 12 bytes name */
938 memcpy (&data[2], "creationdate", 12);
939 data[14] = 2; /* string */
940 data[15] = (strlen (s) >> 8) & 0xff;
941 data[16] = (strlen (s)) & 0xff;
942 memcpy (&data[17], s, strlen (s));
943 script_tag = gst_buffer_join (script_tag, tmp);
949 _gst_buffer_new_and_alloc (2 + 0 + 1, &tmp, &data);
950 data[0] = 0; /* 0 byte size */
952 data[2] = 9; /* end marker */
953 script_tag = gst_buffer_join (script_tag, tmp);
956 _gst_buffer_new_and_alloc (4, &tmp, &data);
957 GST_WRITE_UINT32_BE (data, gst_buffer_get_size (script_tag));
958 script_tag = gst_buffer_join (script_tag, tmp);
960 data = gst_buffer_map (script_tag, NULL, NULL, GST_MAP_WRITE);
961 data[1] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 16) & 0xff;
962 data[2] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 8) & 0xff;
963 data[3] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 0) & 0xff;
965 GST_WRITE_UINT32_BE (data + 11 + 13 + 1, tags_written);
966 gst_buffer_unmap (script_tag, data, -1);
972 gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
973 GstFlvPad * cpad, gboolean is_codec_data)
979 (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) ? GST_BUFFER_TIMESTAMP (buffer) /
980 GST_MSECOND : cpad->last_timestamp / GST_MSECOND;
984 bdata = gst_buffer_map (buffer, &bsize, NULL, GST_MAP_READ);
989 if (cpad->video_codec == 7)
995 if (cpad->audio_codec == 10)
1002 _gst_buffer_new_and_alloc (size, &tag, &data);
1003 GST_BUFFER_TIMESTAMP (tag) = timestamp * GST_MSECOND;
1004 memset (data, 0, size);
1006 data[0] = (cpad->video) ? 9 : 8;
1008 data[1] = ((size - 11 - 4) >> 16) & 0xff;
1009 data[2] = ((size - 11 - 4) >> 8) & 0xff;
1010 data[3] = ((size - 11 - 4) >> 0) & 0xff;
1012 /* wrap the timestamp every G_MAXINT32 miliseconds */
1013 timestamp &= 0x7fffffff;
1014 data[4] = (timestamp >> 16) & 0xff;
1015 data[5] = (timestamp >> 8) & 0xff;
1016 data[6] = (timestamp >> 0) & 0xff;
1017 data[7] = (timestamp >> 24) & 0xff;
1019 data[8] = data[9] = data[10] = 0;
1022 if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1027 data[11] |= cpad->video_codec & 0x0f;
1029 if (cpad->video_codec == 7) {
1030 data[12] = is_codec_data ? 0 : 1;
1032 /* FIXME: what to do about composition time */
1033 data[13] = data[14] = data[15] = 0;
1035 memcpy (data + 11 + 1 + 4, bdata, bsize);
1037 memcpy (data + 11 + 1, bdata, bsize);
1040 data[11] |= (cpad->audio_codec << 4) & 0xf0;
1041 data[11] |= (cpad->rate << 2) & 0x0c;
1042 data[11] |= (cpad->width << 1) & 0x02;
1043 data[11] |= (cpad->channels << 0) & 0x01;
1045 if (cpad->audio_codec == 10) {
1046 data[12] = is_codec_data ? 0 : 1;
1048 memcpy (data + 11 + 1 + 1, bdata, bsize);
1050 memcpy (data + 11 + 1, bdata, bsize);
1054 gst_buffer_unmap (buffer, bdata, -1);
1056 GST_WRITE_UINT32_BE (data + size - 4, size - 4);
1058 GST_BUFFER_TIMESTAMP (tag) = GST_BUFFER_TIMESTAMP (buffer);
1059 GST_BUFFER_DURATION (tag) = GST_BUFFER_DURATION (buffer);
1060 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET (buffer);
1061 GST_BUFFER_OFFSET_END (tag) = GST_BUFFER_OFFSET_END (buffer);
1063 /* mark the buffer if it's an audio buffer and there's also video being muxed
1064 * or it's a video interframe */
1065 if ((mux->have_video && !cpad->video) ||
1066 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1067 GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
1069 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
1070 GST_BUFFER_OFFSET_NONE;
1075 static inline GstBuffer *
1076 gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1079 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
1082 static inline GstBuffer *
1083 gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1086 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
1090 gst_flv_mux_put_buffer_in_streamheader (GValue * streamheader,
1093 GValue value = { 0 };
1096 g_value_init (&value, GST_TYPE_BUFFER);
1097 buf = gst_buffer_copy (buffer);
1098 gst_value_set_buffer (&value, buf);
1099 gst_buffer_unref (buf);
1100 gst_value_array_append_value (streamheader, &value);
1101 g_value_unset (&value);
1104 static GstFlowReturn
1105 gst_flv_mux_write_header (GstFlvMux * mux)
1107 GstBuffer *header, *metadata;
1108 GstBuffer *video_codec_data, *audio_codec_data;
1110 GstStructure *structure;
1111 GValue streamheader = { 0 };
1115 header = gst_flv_mux_create_header (mux);
1116 metadata = gst_flv_mux_create_metadata (mux);
1117 video_codec_data = NULL;
1118 audio_codec_data = NULL;
1120 for (l = mux->collect->data; l != NULL; l = l->next) {
1121 GstFlvPad *cpad = l->data;
1123 /* Get H.264 and AAC codec data, if present */
1124 if (cpad && cpad->video && cpad->video_codec == 7) {
1125 if (cpad->video_codec_data == NULL)
1126 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1127 "output might not be playable");
1130 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1132 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1133 if (cpad->audio_codec_data == NULL)
1134 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1135 "output might not be playable");
1138 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1143 /* mark buffers that will go in the streamheader */
1144 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_IN_CAPS);
1145 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_IN_CAPS);
1146 if (video_codec_data != NULL) {
1147 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1148 /* mark as a delta unit, so downstream will not try to synchronize on that
1149 * buffer - to actually start playback you need a real video keyframe */
1150 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1152 if (audio_codec_data != NULL) {
1153 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1156 /* put buffers in streamheader */
1157 g_value_init (&streamheader, GST_TYPE_ARRAY);
1158 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1159 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1160 if (video_codec_data != NULL)
1161 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1162 if (audio_codec_data != NULL)
1163 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1165 /* create the caps and put the streamheader in them */
1166 caps = gst_caps_new_simple ("video/x-flv", NULL);
1167 caps = gst_caps_make_writable (caps);
1168 structure = gst_caps_get_structure (caps, 0);
1169 gst_structure_set_value (structure, "streamheader", &streamheader);
1170 g_value_unset (&streamheader);
1172 if (!gst_pad_has_current_caps (mux->srcpad))
1173 gst_pad_set_caps (mux->srcpad, caps);
1175 gst_caps_unref (caps);
1177 /* push the header buffer, the metadata and the codec info, if any */
1178 ret = gst_flv_mux_push (mux, header);
1179 if (ret != GST_FLOW_OK)
1181 ret = gst_flv_mux_push (mux, metadata);
1182 if (ret != GST_FLOW_OK)
1184 if (video_codec_data != NULL) {
1185 ret = gst_flv_mux_push (mux, video_codec_data);
1186 if (ret != GST_FLOW_OK)
1189 if (audio_codec_data != NULL) {
1190 ret = gst_flv_mux_push (mux, audio_codec_data);
1191 if (ret != GST_FLOW_OK)
1198 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1201 * Add the tag byte offset and to the index if it's a valid seek point, which
1202 * means it's either a video keyframe or if there is no video pad (in that
1203 * case every FLV tag is a valid seek point)
1205 if (mux->have_video &&
1207 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1210 if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
1211 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1212 entry->position = mux->byte_count;
1214 gst_guint64_to_gdouble (GST_BUFFER_TIMESTAMP (buffer)) / GST_SECOND;
1215 mux->index = g_list_prepend (mux->index, entry);
1219 static GstFlowReturn
1220 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad)
1224 gst_collect_pads_pop (mux->collect, (GstCollectData *) cpad);
1227 /* arrange downstream running time */
1228 buffer = gst_buffer_make_writable (buffer);
1229 GST_BUFFER_TIMESTAMP (buffer) =
1230 gst_segment_to_running_time (&cpad->collect.segment,
1231 GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buffer));
1233 if (!mux->streamable)
1234 gst_flv_mux_update_index (mux, buffer, cpad);
1236 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1238 gst_buffer_unref (buffer);
1240 ret = gst_flv_mux_push (mux, tag);
1242 if (ret == GST_FLOW_OK && GST_BUFFER_TIMESTAMP_IS_VALID (tag))
1243 cpad->last_timestamp = GST_BUFFER_TIMESTAMP (tag);
1249 gst_flv_mux_determine_duration (GstFlvMux * mux)
1252 GstClockTime duration = GST_CLOCK_TIME_NONE;
1254 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1255 "from pad timestamps");
1257 for (l = mux->collect->data; l != NULL; l = l->next) {
1258 GstFlvPad *cpad = l->data;
1260 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1261 if (duration == GST_CLOCK_TIME_NONE)
1262 duration = cpad->last_timestamp;
1264 duration = MAX (duration, cpad->last_timestamp);
1268 if (duration == GST_CLOCK_TIME_NONE) {
1269 GST_DEBUG_OBJECT (mux, "not able to determine duration "
1270 "from pad timestamps, assuming 0");
1277 static GstFlowReturn
1278 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1280 GstBuffer *rewrite, *index, *tmp;
1285 guint32 index_len, allocate_size;
1286 guint32 i, index_skip;
1289 if (mux->streamable)
1292 /* seek back to the preallocated index space */
1293 gst_segment_init (&segment, GST_FORMAT_BYTES);
1294 segment.start = segment.time = 13 + 29;
1295 event = gst_event_new_segment (&segment);
1296 if (!gst_pad_push_event (mux->srcpad, event)) {
1297 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1301 /* if we were not able to determine the duration before, set it now */
1302 if (mux->duration == GST_CLOCK_TIME_NONE)
1303 mux->duration = gst_flv_mux_determine_duration (mux);
1305 /* rewrite the duration tag */
1306 d = gst_guint64_to_gdouble (mux->duration);
1307 d /= (gdouble) GST_SECOND;
1309 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1311 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1313 /* rewrite the filesize tag */
1314 d = gst_guint64_to_gdouble (mux->byte_count);
1316 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1318 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1319 rewrite = gst_buffer_join (rewrite, tmp);
1322 /* no index, so push buffer and return */
1323 return gst_flv_mux_push (mux, rewrite);
1326 /* rewrite the index */
1327 mux->index = g_list_reverse (mux->index);
1328 index_len = g_list_length (mux->index);
1330 /* We write at most MAX_INDEX_ENTRIES elements */
1331 if (index_len > MAX_INDEX_ENTRIES) {
1332 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1333 index_len = (index_len + index_skip - 1) / index_skip;
1338 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1339 /* see size calculation in gst_flv_mux_preallocate_index */
1340 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1341 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1342 _gst_buffer_new_and_alloc (allocate_size, &index, &data);
1344 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1345 memcpy (data + 2, "keyframes", 9);
1346 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1347 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1348 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1349 memcpy (data + 18, "times", 5);
1350 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1351 GST_WRITE_UINT32_BE (data + 24, index_len);
1354 /* the keyframes' times */
1355 for (i = 0, l = mux->index; l; l = l->next, i++) {
1356 GstFlvMuxIndexEntry *entry = l->data;
1358 if (i % index_skip != 0)
1360 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1361 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1365 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1366 memcpy (data + 2, "filepositions", 13);
1367 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1368 GST_WRITE_UINT32_BE (data + 16, index_len);
1371 /* the keyframes' file positions */
1372 for (i = 0, l = mux->index; l; l = l->next, i++) {
1373 GstFlvMuxIndexEntry *entry = l->data;
1375 if (i % index_skip != 0)
1377 GST_WRITE_UINT8 (data, 0);
1378 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1382 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1384 /* If there is space left in the prefilled area, reinsert the filler.
1385 There is at least 18 bytes free, so it will always fit. */
1386 if (index_len < MAX_INDEX_ENTRIES) {
1389 guint32 remaining_filler_size;
1391 _gst_buffer_new_and_alloc (14, &tmp, &data);
1392 GST_WRITE_UINT16_BE (data, 9);
1393 memcpy (data + 2, "gstfiller", 9);
1394 GST_WRITE_UINT8 (data + 11, 2); /* string */
1396 /* There is 18 bytes per remaining index entry minus what is used for
1397 * the'gstfiller' key. The rest is already filled with spaces, so just need
1398 * to update length. */
1399 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1400 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1401 remaining_filler_size);
1402 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1403 index = gst_buffer_join (index, tmp);
1406 rewrite = gst_buffer_join (rewrite, index);
1408 return gst_flv_mux_push (mux, rewrite);
1411 static GstFlowReturn
1412 gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data)
1414 GstFlvMux *mux = GST_FLV_MUX (user_data);
1416 GstClockTime best_time;
1419 gboolean eos = TRUE;
1421 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1424 if (mux->collect->data == NULL) {
1425 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1426 ("No input streams configured"));
1427 return GST_FLOW_ERROR;
1430 gst_segment_init (&segment, GST_FORMAT_BYTES);
1431 if (gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment)))
1432 ret = gst_flv_mux_write_header (mux);
1434 ret = GST_FLOW_ERROR;
1436 if (ret != GST_FLOW_OK)
1438 mux->state = GST_FLV_MUX_STATE_DATA;
1441 if (mux->new_tags) {
1442 GstBuffer *buf = gst_flv_mux_create_metadata (mux);
1443 gst_flv_mux_push (mux, buf);
1444 mux->new_tags = FALSE;
1449 best_time = GST_CLOCK_TIME_NONE;
1450 for (sl = mux->collect->data; sl; sl = sl->next) {
1451 GstFlvPad *cpad = sl->data;
1452 GstBuffer *buffer = gst_collect_pads_peek (pads, (GstCollectData *) cpad);
1460 time = GST_BUFFER_TIMESTAMP (buffer);
1461 gst_buffer_unref (buffer);
1463 /* Use buffers without valid timestamp first */
1464 if (!GST_CLOCK_TIME_IS_VALID (time)) {
1465 GST_WARNING_OBJECT (pads, "Buffer without valid timestamp");
1467 best_time = cpad->last_timestamp;
1472 time = gst_segment_to_running_time (&cpad->collect.segment,
1473 GST_FORMAT_TIME, time);
1474 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
1475 GST_DEBUG_OBJECT (mux, "clipping buffer on pad %s outside segment",
1476 GST_PAD_NAME (cpad->collect.pad));
1477 buffer = gst_collect_pads_pop (pads, (GstCollectData *) cpad);
1478 gst_buffer_unref (buffer);
1482 if (best == NULL || (GST_CLOCK_TIME_IS_VALID (best_time)
1483 && time < best_time)) {
1489 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1490 bigger timestamp is seen, for live the timestamp will get wrapped in
1491 gst_flv_mux_buffer_to_tag */
1492 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1493 && best_time / GST_MSECOND > G_MAXINT32) {
1494 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1499 return gst_flv_mux_write_buffer (mux, best);
1501 gst_flv_mux_rewrite_header (mux);
1502 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1503 return GST_FLOW_UNEXPECTED;
1510 gst_flv_mux_get_property (GObject * object,
1511 guint prop_id, GValue * value, GParamSpec * pspec)
1513 GstFlvMux *mux = GST_FLV_MUX (object);
1516 case PROP_STREAMABLE:
1517 g_value_set_boolean (value, mux->streamable);
1520 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1526 gst_flv_mux_set_property (GObject * object,
1527 guint prop_id, const GValue * value, GParamSpec * pspec)
1529 GstFlvMux *mux = GST_FLV_MUX (object);
1532 case PROP_STREAMABLE:
1533 mux->streamable = g_value_get_boolean (value);
1534 if (mux->streamable)
1535 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1536 GST_TAG_MERGE_REPLACE);
1538 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1539 GST_TAG_MERGE_KEEP);
1542 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1547 static GstStateChangeReturn
1548 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1550 GstStateChangeReturn ret;
1551 GstFlvMux *mux = GST_FLV_MUX (element);
1553 switch (transition) {
1554 case GST_STATE_CHANGE_NULL_TO_READY:
1556 case GST_STATE_CHANGE_READY_TO_PAUSED:
1557 gst_collect_pads_start (mux->collect);
1559 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1561 case GST_STATE_CHANGE_PAUSED_TO_READY:
1562 gst_collect_pads_stop (mux->collect);
1568 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1570 switch (transition) {
1571 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1573 case GST_STATE_CHANGE_PAUSED_TO_READY:
1574 gst_flv_mux_reset (GST_ELEMENT (mux));
1576 case GST_STATE_CHANGE_READY_TO_NULL: