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) 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 _do_init(type) \
87 static const GInterfaceInfo tag_setter_info = { \
92 g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, \
96 GST_BOILERPLATE_FULL (GstFlvMux, gst_flv_mux, GstElement, GST_TYPE_ELEMENT,
99 static void gst_flv_mux_finalize (GObject * object);
101 gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data);
103 static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event);
104 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
105 GstPadTemplate * templ, const gchar * name);
106 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
108 static void gst_flv_mux_get_property (GObject * object,
109 guint prop_id, GValue * value, GParamSpec * pspec);
110 static void gst_flv_mux_set_property (GObject * object,
111 guint prop_id, const GValue * value, GParamSpec * pspec);
113 static GstStateChangeReturn
114 gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
116 static void gst_flv_mux_reset (GstElement * element);
122 } GstFlvMuxIndexEntry;
125 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
127 g_slice_free (GstFlvMuxIndexEntry, entry);
131 gst_flv_mux_base_init (gpointer g_class)
133 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
135 gst_element_class_add_pad_template (element_class,
136 gst_static_pad_template_get (&videosink_templ));
137 gst_element_class_add_pad_template (element_class,
138 gst_static_pad_template_get (&audiosink_templ));
139 gst_element_class_add_pad_template (element_class,
140 gst_static_pad_template_get (&src_templ));
141 gst_element_class_set_details_simple (element_class, "FLV muxer",
143 "Muxes video/audio streams into a FLV stream",
144 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
146 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
150 gst_flv_mux_class_init (GstFlvMuxClass * klass)
152 GObjectClass *gobject_class;
153 GstElementClass *gstelement_class;
155 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
157 gobject_class = (GObjectClass *) klass;
158 gstelement_class = (GstElementClass *) klass;
160 gobject_class->get_property = gst_flv_mux_get_property;
161 gobject_class->set_property = gst_flv_mux_set_property;
162 gobject_class->finalize = gst_flv_mux_finalize;
164 /* FIXME: ideally the right mode of operation should be detected
165 * automatically using queries when parameter not specified. */
167 * GstFlvMux:streamable
169 * If True, the output will be streaming friendly. (ie without indexes and
174 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
175 g_param_spec_boolean ("streamable", "streamable",
176 "If set to true, the output should be as if it is to be streamed "
177 "and hence no indexes written or duration written.",
178 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
180 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
181 gstelement_class->request_new_pad =
182 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
183 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
187 gst_flv_mux_init (GstFlvMux * mux, GstFlvMuxClass * g_class)
189 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
190 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
191 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
194 mux->streamable = DEFAULT_STREAMABLE;
196 mux->new_tags = FALSE;
198 mux->collect = gst_collect_pads_new ();
199 gst_collect_pads_set_function (mux->collect,
200 (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_flv_mux_collected), mux);
202 gst_flv_mux_reset (GST_ELEMENT (mux));
206 gst_flv_mux_finalize (GObject * object)
208 GstFlvMux *mux = GST_FLV_MUX (object);
210 gst_object_unref (mux->collect);
212 G_OBJECT_CLASS (parent_class)->finalize (object);
216 gst_flv_mux_reset (GstElement * element)
218 GstFlvMux *mux = GST_FLV_MUX (element);
221 while ((sl = mux->collect->data) != NULL) {
222 GstFlvPad *cpad = (GstFlvPad *) sl->data;
224 gst_element_release_request_pad (element, cpad->collect.pad);
227 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
228 g_list_free (mux->index);
232 mux->have_audio = mux->have_video = FALSE;
233 mux->duration = GST_CLOCK_TIME_NONE;
234 mux->new_tags = FALSE;
236 mux->state = GST_FLV_MUX_STATE_HEADER;
239 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
243 gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event)
247 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
251 /* disable seeking for now */
257 return gst_pad_event_default (pad, event);
261 gst_flv_mux_handle_sink_event (GstPad * pad, GstEvent * event)
263 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
266 switch (GST_EVENT_TYPE (event)) {
269 GstTagSetter *setter = GST_TAG_SETTER (mux);
270 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
272 gst_event_parse_tag (event, &list);
273 gst_tag_setter_merge_tags (setter, list, mode);
274 mux->new_tags = TRUE;
277 case GST_EVENT_NEWSEGMENT:
278 /* We don't support NEWSEGMENT events */
280 gst_event_unref (event);
286 /* now GstCollectPads can take care of the rest, e.g. EOS */
288 ret = mux->collect_event (pad, event);
289 gst_object_unref (mux);
295 gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
297 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
298 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
302 s = gst_caps_get_structure (caps, 0);
304 if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
305 cpad->video_codec = 2;
306 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
307 cpad->video_codec = 3;
308 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
309 cpad->video_codec = 4;
310 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
311 cpad->video_codec = 5;
312 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
313 cpad->video_codec = 7;
318 if (ret && gst_structure_has_field (s, "codec_data")) {
319 const GValue *val = gst_structure_get_value (s, "codec_data");
322 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
325 gst_object_unref (mux);
331 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
333 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
334 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
338 s = gst_caps_get_structure (caps, 0);
340 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
341 const gchar *layout = gst_structure_get_string (s, "layout");
342 if (layout && strcmp (layout, "swf") == 0) {
343 cpad->audio_codec = 1;
347 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
350 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
351 if (mpegversion == 1) {
354 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
357 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
358 cpad->audio_codec = 14;
360 cpad->audio_codec = 2;
364 } else if (mpegversion == 4) {
365 cpad->audio_codec = 10;
372 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
375 if (gst_structure_get_int (s, "rate", &rate)
376 && gst_structure_get_int (s, "channels", &channels)) {
377 if (channels == 1 && rate == 16000)
378 cpad->audio_codec = 4;
379 else if (channels == 1 && rate == 8000)
380 cpad->audio_codec = 5;
382 cpad->audio_codec = 6;
384 cpad->audio_codec = 6;
386 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw-int") == 0) {
389 if (gst_structure_get_int (s, "endianness", &endianness)
390 && endianness == G_LITTLE_ENDIAN)
391 cpad->audio_codec = 3;
394 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
395 cpad->audio_codec = 7;
396 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
397 cpad->audio_codec = 8;
398 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
399 cpad->audio_codec = 11;
405 gint rate, channels, width;
407 if (gst_structure_get_int (s, "rate", &rate)) {
408 if (cpad->audio_codec == 10)
410 else if (rate == 5512)
412 else if (rate == 11025)
414 else if (rate == 22050)
416 else if (rate == 44100)
418 else if (rate == 8000 && (cpad->audio_codec == 5
419 || cpad->audio_codec == 14))
421 else if (rate == 16000 && cpad->audio_codec == 4)
425 } else if (cpad->audio_codec == 10) {
431 if (gst_structure_get_int (s, "channels", &channels)) {
432 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
433 || cpad->audio_codec == 6)
435 else if (cpad->audio_codec == 10)
437 else if (channels == 1)
439 else if (channels == 2)
443 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
444 || cpad->audio_codec == 6) {
446 } else if (cpad->audio_codec == 10) {
452 if (gst_structure_get_int (s, "width", &width)) {
453 if (cpad->audio_codec != 3)
457 else if (width == 16)
461 } else if (cpad->audio_codec != 3) {
468 if (ret && gst_structure_has_field (s, "codec_data")) {
469 const GValue *val = gst_structure_get_value (s, "codec_data");
472 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
475 gst_object_unref (mux);
481 gst_flv_mux_request_new_pad (GstElement * element,
482 GstPadTemplate * templ, const gchar * pad_name)
484 GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
485 GstFlvMux *mux = GST_FLV_MUX (element);
488 const gchar *name = NULL;
489 GstPadSetCapsFunction setcapsfunc = NULL;
492 if (mux->state != GST_FLV_MUX_STATE_HEADER) {
493 GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
497 if (templ == gst_element_class_get_pad_template (klass, "audio")) {
498 if (mux->have_audio) {
499 GST_WARNING_OBJECT (mux, "Already have an audio pad");
502 mux->have_audio = TRUE;
505 setcapsfunc = GST_DEBUG_FUNCPTR (gst_flv_mux_audio_pad_setcaps);
506 } else if (templ == gst_element_class_get_pad_template (klass, "video")) {
507 if (mux->have_video) {
508 GST_WARNING_OBJECT (mux, "Already have a video pad");
511 mux->have_video = TRUE;
514 setcapsfunc = GST_DEBUG_FUNCPTR (gst_flv_mux_video_pad_setcaps);
516 GST_WARNING_OBJECT (mux, "Invalid template");
520 pad = gst_pad_new_from_template (templ, name);
522 gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstFlvPad));
526 cpad->audio_codec = G_MAXUINT;
527 cpad->rate = G_MAXUINT;
528 cpad->width = G_MAXUINT;
529 cpad->channels = G_MAXUINT;
530 cpad->audio_codec_data = NULL;
532 cpad->video_codec = G_MAXUINT;
533 cpad->video_codec_data = NULL;
535 cpad->last_timestamp = 0;
537 /* FIXME: hacked way to override/extend the event function of
538 * GstCollectPads; because it sets its own event function giving the
539 * element no access to events.
541 mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (pad);
542 gst_pad_set_event_function (pad,
543 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event));
545 gst_pad_set_setcaps_function (pad, setcapsfunc);
546 gst_pad_set_active (pad, TRUE);
547 gst_element_add_pad (element, pad);
553 gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
555 GstFlvMux *mux = GST_FLV_MUX (GST_PAD_PARENT (pad));
556 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
558 if (cpad && cpad->audio_codec_data)
559 gst_buffer_unref (cpad->audio_codec_data);
560 if (cpad && cpad->video_codec_data)
561 gst_buffer_unref (cpad->video_codec_data);
563 gst_collect_pads_remove_pad (mux->collect, pad);
564 gst_element_remove_pad (element, pad);
568 gst_flv_mux_push (GstFlvMux * mux, GstBuffer * buffer)
570 gst_buffer_set_caps (buffer, GST_PAD_CAPS (mux->srcpad));
571 /* pushing the buffer that rewrites the header will make it no longer be the
572 * total output size in bytes, but it doesn't matter at that point */
573 mux->byte_count += GST_BUFFER_SIZE (buffer);
575 return gst_pad_push (mux->srcpad, buffer);
579 gst_flv_mux_create_header (GstFlvMux * mux)
584 header = gst_buffer_new_and_alloc (9 + 4);
585 data = GST_BUFFER_DATA (header);
590 data[3] = 0x01; /* Version */
592 data[4] = (mux->have_audio << 2) | mux->have_video; /* flags */
593 GST_WRITE_UINT32_BE (data + 5, 9); /* data offset */
594 GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
600 gst_flv_mux_preallocate_index (GstFlvMux * mux)
604 gint preallocate_size;
606 /* preallocate index of size:
607 * - 'keyframes' ECMA array key: 2 + 9 = 11 bytes
608 * - nested ECMA array header, length and end marker: 8 bytes
609 * - 'times' and 'filepositions' keys: 22 bytes
610 * - two strict arrays headers and lengths: 10 bytes
611 * - each index entry: 18 bytes
613 preallocate_size = 11 + 8 + 22 + 10 + MAX_INDEX_ENTRIES * 18;
614 GST_DEBUG_OBJECT (mux, "preallocating %d bytes for the index",
617 tmp = gst_buffer_new_and_alloc (preallocate_size);
618 data = GST_BUFFER_DATA (tmp);
620 /* prefill the space with a gstfiller: <spaces> script tag variable */
621 GST_WRITE_UINT16_BE (data, 9); /* 9 characters */
622 memcpy (data + 2, "gstfiller", 9);
623 GST_WRITE_UINT8 (data + 11, 2); /* a string value */
624 GST_WRITE_UINT16_BE (data + 12, preallocate_size - 14);
625 memset (data + 14, ' ', preallocate_size - 14); /* the rest is spaces */
630 gst_flv_mux_create_number_script_value (const gchar * name, gdouble value)
632 GstBuffer *tmp = gst_buffer_new_and_alloc (2 + strlen (name) + 1 + 8);
633 guint8 *data = GST_BUFFER_DATA (tmp);
635 GST_WRITE_UINT16_BE (data, strlen (name)); /* name length */
636 memcpy (&data[2], name, strlen (name));
637 data[2 + strlen (name)] = 0; /* double */
638 GST_WRITE_DOUBLE_BE (data + 2 + strlen (name) + 1, value);
644 gst_flv_mux_create_metadata (GstFlvMux * mux)
646 const GstTagList *tags;
647 GstBuffer *script_tag, *tmp;
649 gint i, n_tags, tags_written = 0;
651 tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
653 GST_DEBUG_OBJECT (mux, "tags = %" GST_PTR_FORMAT, tags);
655 script_tag = gst_buffer_new_and_alloc (11);
656 data = GST_BUFFER_DATA (script_tag);
660 /* Data size, unknown for now */
666 data[4] = data[5] = data[6] = data[7] = 0;
669 data[8] = data[9] = data[10] = 0;
671 tmp = gst_buffer_new_and_alloc (13);
672 data = GST_BUFFER_DATA (tmp);
673 data[0] = 2; /* string */
675 data[2] = 10; /* length 10 */
676 memcpy (&data[3], "onMetaData", 10);
678 script_tag = gst_buffer_join (script_tag, tmp);
680 n_tags = (tags) ? gst_structure_n_fields ((GstStructure *) tags) : 0;
681 tmp = gst_buffer_new_and_alloc (5);
682 data = GST_BUFFER_DATA (tmp);
683 data[0] = 8; /* ECMA array */
684 GST_WRITE_UINT32_BE (data + 1, n_tags);
685 script_tag = gst_buffer_join (script_tag, tmp);
687 /* Some players expect the 'duration' to be always set. Fill it out later,
688 after querying the pads or after getting EOS */
689 if (!mux->streamable) {
690 tmp = gst_flv_mux_create_number_script_value ("duration", 86400);
691 script_tag = gst_buffer_join (script_tag, tmp);
695 /* Sometimes the information about the total file size is useful for the
696 player. It will be filled later, after getting EOS */
697 if (!mux->streamable) {
698 tmp = gst_flv_mux_create_number_script_value ("filesize", 0);
699 script_tag = gst_buffer_join (script_tag, tmp);
703 if (!mux->streamable) {
704 tmp = gst_flv_mux_preallocate_index (mux);
705 script_tag = gst_buffer_join (script_tag, tmp);
707 GST_DEBUG_OBJECT (mux, "not preallocating index, streamable mode");
710 for (i = 0; tags && i < n_tags; i++) {
711 const gchar *tag_name =
712 gst_structure_nth_field_name ((const GstStructure *) tags, i);
713 if (!strcmp (tag_name, GST_TAG_DURATION)) {
716 if (!gst_tag_list_get_uint64 (tags, GST_TAG_DURATION, &dur))
719 } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
720 !strcmp (tag_name, GST_TAG_TITLE)) {
722 const gchar *t = NULL;
724 if (!strcmp (tag_name, GST_TAG_ARTIST))
726 else if (!strcmp (tag_name, GST_TAG_TITLE))
729 if (!gst_tag_list_get_string (tags, tag_name, &s))
732 tmp = gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s));
733 data = GST_BUFFER_DATA (tmp);
734 data[0] = 0; /* tag name length */
735 data[1] = strlen (t);
736 memcpy (&data[2], t, strlen (t));
737 data[2 + strlen (t)] = 2; /* string */
738 data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
739 data[4 + strlen (t)] = (strlen (s)) & 0xff;
740 memcpy (&data[5 + strlen (t)], s, strlen (s));
741 script_tag = gst_buffer_join (script_tag, tmp);
748 if (mux->duration == GST_CLOCK_TIME_NONE) {
751 GstFormat fmt = GST_FORMAT_TIME;
754 for (l = mux->collect->data; l; l = l->next) {
755 GstCollectData *cdata = l->data;
757 fmt = GST_FORMAT_TIME;
759 if (gst_pad_query_peer_duration (cdata->pad, &fmt, (gint64 *) & dur) &&
760 fmt == GST_FORMAT_TIME && dur != GST_CLOCK_TIME_NONE) {
761 if (mux->duration == GST_CLOCK_TIME_NONE)
764 mux->duration = MAX (dur, mux->duration);
769 if (!mux->streamable && mux->duration != GST_CLOCK_TIME_NONE) {
771 d = gst_guint64_to_gdouble (mux->duration);
772 d /= (gdouble) GST_SECOND;
774 GST_DEBUG_OBJECT (mux, "determined the duration to be %f", d);
775 data = GST_BUFFER_DATA (script_tag);
776 GST_WRITE_DOUBLE_BE (data + 29 + 2 + 8 + 1, d);
779 if (mux->have_video) {
780 GstPad *video_pad = NULL;
782 GSList *l = mux->collect->data;
784 for (; l; l = l->next) {
786 if (cpad && cpad->video) {
787 video_pad = cpad->collect.pad;
792 if (video_pad && GST_PAD_CAPS (video_pad)) {
793 GstStructure *s = gst_caps_get_structure (GST_PAD_CAPS (video_pad), 0);
797 GST_DEBUG_OBJECT (mux, "putting videocodecid %d in the metadata",
800 tmp = gst_flv_mux_create_number_script_value ("videocodecid",
802 script_tag = gst_buffer_join (script_tag, tmp);
805 if (gst_structure_get_int (s, "width", &size)) {
806 GST_DEBUG_OBJECT (mux, "putting width %d in the metadata", size);
808 tmp = gst_flv_mux_create_number_script_value ("width", size);
809 script_tag = gst_buffer_join (script_tag, tmp);
813 if (gst_structure_get_int (s, "height", &size)) {
814 GST_DEBUG_OBJECT (mux, "putting height %d in the metadata", size);
816 tmp = gst_flv_mux_create_number_script_value ("height", size);
817 script_tag = gst_buffer_join (script_tag, tmp);
821 if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &num, &den)) {
825 GST_DEBUG_OBJECT (mux, "putting AspectRatioX %f in the metadata", d);
827 tmp = gst_flv_mux_create_number_script_value ("AspectRatioX", d);
828 script_tag = gst_buffer_join (script_tag, tmp);
832 GST_DEBUG_OBJECT (mux, "putting AspectRatioY %f in the metadata", d);
834 tmp = gst_flv_mux_create_number_script_value ("AspectRatioY", d);
835 script_tag = gst_buffer_join (script_tag, tmp);
839 if (gst_structure_get_fraction (s, "framerate", &num, &den)) {
842 gst_util_fraction_to_double (num, den, &d);
843 GST_DEBUG_OBJECT (mux, "putting framerate %f in the metadata", d);
845 tmp = gst_flv_mux_create_number_script_value ("framerate", d);
846 script_tag = gst_buffer_join (script_tag, tmp);
852 if (mux->have_audio) {
853 GstPad *audio_pad = NULL;
855 GSList *l = mux->collect->data;
857 for (; l; l = l->next) {
859 if (cpad && !cpad->video) {
860 audio_pad = cpad->collect.pad;
866 GST_DEBUG_OBJECT (mux, "putting audiocodecid %d in the metadata",
869 tmp = gst_flv_mux_create_number_script_value ("audiocodecid",
871 script_tag = gst_buffer_join (script_tag, tmp);
877 const gchar *s = "GStreamer FLV muxer";
879 tmp = gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s));
880 data = GST_BUFFER_DATA (tmp);
881 data[0] = 0; /* 15 bytes name */
883 memcpy (&data[2], "metadatacreator", 15);
884 data[17] = 2; /* string */
885 data[18] = (strlen (s) >> 8) & 0xff;
886 data[19] = (strlen (s)) & 0xff;
887 memcpy (&data[20], s, strlen (s));
888 script_tag = gst_buffer_join (script_tag, tmp);
894 GTimeVal tv = { 0, };
898 static const gchar *weekdays[] = {
899 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
901 static const gchar *months[] = {
902 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
903 "Aug", "Sep", "Oct", "Nov", "Dec"
906 g_get_current_time (&tv);
910 s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
911 months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
914 tmp = gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s));
915 data = GST_BUFFER_DATA (tmp);
916 data[0] = 0; /* 12 bytes name */
918 memcpy (&data[2], "creationdate", 12);
919 data[14] = 2; /* string */
920 data[15] = (strlen (s) >> 8) & 0xff;
921 data[16] = (strlen (s)) & 0xff;
922 memcpy (&data[17], s, strlen (s));
923 script_tag = gst_buffer_join (script_tag, tmp);
929 tmp = gst_buffer_new_and_alloc (2 + 0 + 1);
930 data = GST_BUFFER_DATA (tmp);
931 data[0] = 0; /* 0 byte size */
933 data[2] = 9; /* end marker */
934 script_tag = gst_buffer_join (script_tag, tmp);
937 tmp = gst_buffer_new_and_alloc (4);
938 data = GST_BUFFER_DATA (tmp);
939 GST_WRITE_UINT32_BE (data, GST_BUFFER_SIZE (script_tag));
940 script_tag = gst_buffer_join (script_tag, tmp);
942 data = GST_BUFFER_DATA (script_tag);
943 data[1] = ((GST_BUFFER_SIZE (script_tag) - 11 - 4) >> 16) & 0xff;
944 data[2] = ((GST_BUFFER_SIZE (script_tag) - 11 - 4) >> 8) & 0xff;
945 data[3] = ((GST_BUFFER_SIZE (script_tag) - 11 - 4) >> 0) & 0xff;
947 GST_WRITE_UINT32_BE (data + 11 + 13 + 1, tags_written);
953 gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
954 GstFlvPad * cpad, gboolean is_codec_data)
960 (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) ? GST_BUFFER_TIMESTAMP (buffer) /
961 GST_MSECOND : cpad->last_timestamp / GST_MSECOND;
966 if (cpad->video_codec == 7)
967 size += 4 + GST_BUFFER_SIZE (buffer);
969 size += GST_BUFFER_SIZE (buffer);
972 if (cpad->audio_codec == 10)
973 size += 1 + GST_BUFFER_SIZE (buffer);
975 size += GST_BUFFER_SIZE (buffer);
979 tag = gst_buffer_new_and_alloc (size);
980 GST_BUFFER_TIMESTAMP (tag) = timestamp * GST_MSECOND;
981 data = GST_BUFFER_DATA (tag);
982 memset (data, 0, size);
984 data[0] = (cpad->video) ? 9 : 8;
986 data[1] = ((size - 11 - 4) >> 16) & 0xff;
987 data[2] = ((size - 11 - 4) >> 8) & 0xff;
988 data[3] = ((size - 11 - 4) >> 0) & 0xff;
990 /* wrap the timestamp every G_MAXINT32 miliseconds */
991 timestamp &= 0x7fffffff;
992 data[4] = (timestamp >> 16) & 0xff;
993 data[5] = (timestamp >> 8) & 0xff;
994 data[6] = (timestamp >> 0) & 0xff;
995 data[7] = (timestamp >> 24) & 0xff;
997 data[8] = data[9] = data[10] = 0;
1000 if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1005 data[11] |= cpad->video_codec & 0x0f;
1007 if (cpad->video_codec == 7) {
1008 data[12] = is_codec_data ? 0 : 1;
1010 /* FIXME: what to do about composition time */
1011 data[13] = data[14] = data[15] = 0;
1013 memcpy (data + 11 + 1 + 4, GST_BUFFER_DATA (buffer),
1014 GST_BUFFER_SIZE (buffer));
1016 memcpy (data + 11 + 1, GST_BUFFER_DATA (buffer),
1017 GST_BUFFER_SIZE (buffer));
1020 data[11] |= (cpad->audio_codec << 4) & 0xf0;
1021 data[11] |= (cpad->rate << 2) & 0x0c;
1022 data[11] |= (cpad->width << 1) & 0x02;
1023 data[11] |= (cpad->channels << 0) & 0x01;
1025 if (cpad->audio_codec == 10) {
1026 data[12] = is_codec_data ? 0 : 1;
1028 memcpy (data + 11 + 1 + 1, GST_BUFFER_DATA (buffer),
1029 GST_BUFFER_SIZE (buffer));
1031 memcpy (data + 11 + 1, GST_BUFFER_DATA (buffer),
1032 GST_BUFFER_SIZE (buffer));
1036 GST_WRITE_UINT32_BE (data + size - 4, size - 4);
1038 gst_buffer_copy_metadata (tag, buffer, GST_BUFFER_COPY_TIMESTAMPS);
1039 /* mark the buffer if it's an audio buffer and there's also video being muxed
1040 * or it's a video interframe */
1041 if ((mux->have_video && !cpad->video) ||
1042 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1043 GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
1045 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
1046 GST_BUFFER_OFFSET_NONE;
1051 static inline GstBuffer *
1052 gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1055 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
1058 static inline GstBuffer *
1059 gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1062 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
1066 gst_flv_mux_put_buffer_in_streamheader (GValue * streamheader,
1069 GValue value = { 0 };
1072 g_value_init (&value, GST_TYPE_BUFFER);
1073 buf = gst_buffer_copy (buffer);
1074 gst_value_set_buffer (&value, buf);
1075 gst_buffer_unref (buf);
1076 gst_value_array_append_value (streamheader, &value);
1077 g_value_unset (&value);
1080 static GstFlowReturn
1081 gst_flv_mux_write_header (GstFlvMux * mux)
1083 GstBuffer *header, *metadata;
1084 GstBuffer *video_codec_data, *audio_codec_data;
1086 GstStructure *structure;
1087 GValue streamheader = { 0 };
1091 header = gst_flv_mux_create_header (mux);
1092 metadata = gst_flv_mux_create_metadata (mux);
1093 video_codec_data = NULL;
1094 audio_codec_data = NULL;
1096 for (l = mux->collect->data; l != NULL; l = l->next) {
1097 GstFlvPad *cpad = l->data;
1099 /* Get H.264 and AAC codec data, if present */
1100 if (cpad && cpad->video && cpad->video_codec == 7) {
1101 if (cpad->video_codec_data == NULL)
1102 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1103 "output might not be playable");
1106 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1108 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1109 if (cpad->audio_codec_data == NULL)
1110 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1111 "output might not be playable");
1114 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1119 /* mark buffers that will go in the streamheader */
1120 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_IN_CAPS);
1121 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_IN_CAPS);
1122 if (video_codec_data != NULL) {
1123 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1124 /* mark as a delta unit, so downstream will not try to synchronize on that
1125 * buffer - to actually start playback you need a real video keyframe */
1126 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1128 if (audio_codec_data != NULL) {
1129 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1132 /* put buffers in streamheader */
1133 g_value_init (&streamheader, GST_TYPE_ARRAY);
1134 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1135 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1136 if (video_codec_data != NULL)
1137 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1138 if (audio_codec_data != NULL)
1139 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1141 /* create the caps and put the streamheader in them */
1142 caps = gst_caps_new_simple ("video/x-flv", NULL);
1143 caps = gst_caps_make_writable (caps);
1144 structure = gst_caps_get_structure (caps, 0);
1145 gst_structure_set_value (structure, "streamheader", &streamheader);
1146 g_value_unset (&streamheader);
1148 if (GST_PAD_CAPS (mux->srcpad) == NULL)
1149 gst_pad_set_caps (mux->srcpad, caps);
1151 gst_caps_unref (caps);
1153 /* push the header buffer, the metadata and the codec info, if any */
1154 ret = gst_flv_mux_push (mux, header);
1155 if (ret != GST_FLOW_OK)
1157 ret = gst_flv_mux_push (mux, metadata);
1158 if (ret != GST_FLOW_OK)
1160 if (video_codec_data != NULL) {
1161 ret = gst_flv_mux_push (mux, video_codec_data);
1162 if (ret != GST_FLOW_OK)
1165 if (audio_codec_data != NULL) {
1166 ret = gst_flv_mux_push (mux, audio_codec_data);
1167 if (ret != GST_FLOW_OK)
1174 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1177 * Add the tag byte offset and to the index if it's a valid seek point, which
1178 * means it's either a video keyframe or if there is no video pad (in that
1179 * case every FLV tag is a valid seek point)
1181 if (mux->have_video &&
1183 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1186 if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
1187 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1188 entry->position = mux->byte_count;
1190 gst_guint64_to_gdouble (GST_BUFFER_TIMESTAMP (buffer)) / GST_SECOND;
1191 mux->index = g_list_prepend (mux->index, entry);
1195 static GstFlowReturn
1196 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad)
1200 gst_collect_pads_pop (mux->collect, (GstCollectData *) cpad);
1203 /* arrange downstream running time */
1204 buffer = gst_buffer_make_metadata_writable (buffer);
1205 GST_BUFFER_TIMESTAMP (buffer) =
1206 gst_segment_to_running_time (&cpad->collect.segment,
1207 GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buffer));
1209 if (!mux->streamable)
1210 gst_flv_mux_update_index (mux, buffer, cpad);
1212 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1214 gst_buffer_unref (buffer);
1216 ret = gst_flv_mux_push (mux, tag);
1218 if (ret == GST_FLOW_OK && GST_BUFFER_TIMESTAMP_IS_VALID (tag))
1219 cpad->last_timestamp = GST_BUFFER_TIMESTAMP (tag);
1225 gst_flv_mux_determine_duration (GstFlvMux * mux)
1228 GstClockTime duration = GST_CLOCK_TIME_NONE;
1230 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1231 "from pad timestamps");
1233 for (l = mux->collect->data; l != NULL; l = l->next) {
1234 GstFlvPad *cpad = l->data;
1236 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1237 if (duration == GST_CLOCK_TIME_NONE)
1238 duration = cpad->last_timestamp;
1240 duration = MAX (duration, cpad->last_timestamp);
1244 if (duration == GST_CLOCK_TIME_NONE) {
1245 GST_DEBUG_OBJECT (mux, "not able to determine duration "
1246 "from pad timestamps, assuming 0");
1253 static GstFlowReturn
1254 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1256 GstBuffer *rewrite, *index, *tmp;
1261 guint32 index_len, allocate_size;
1262 guint32 i, index_skip;
1264 if (mux->streamable)
1267 /* seek back to the preallocated index space */
1268 event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
1269 13 + 29, GST_CLOCK_TIME_NONE, 13 + 29);
1270 if (!gst_pad_push_event (mux->srcpad, event)) {
1271 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1275 /* if we were not able to determine the duration before, set it now */
1276 if (mux->duration == GST_CLOCK_TIME_NONE)
1277 mux->duration = gst_flv_mux_determine_duration (mux);
1279 /* rewrite the duration tag */
1280 d = gst_guint64_to_gdouble (mux->duration);
1281 d /= (gdouble) GST_SECOND;
1283 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1285 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1287 /* rewrite the filesize tag */
1288 d = gst_guint64_to_gdouble (mux->byte_count);
1290 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1292 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1293 rewrite = gst_buffer_join (rewrite, tmp);
1296 /* no index, so push buffer and return */
1297 return gst_flv_mux_push (mux, rewrite);
1300 /* rewrite the index */
1301 mux->index = g_list_reverse (mux->index);
1302 index_len = g_list_length (mux->index);
1304 /* We write at most MAX_INDEX_ENTRIES elements */
1305 if (index_len > MAX_INDEX_ENTRIES) {
1306 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1307 index_len = (index_len + index_skip - 1) / index_skip;
1312 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1313 /* see size calculation in gst_flv_mux_preallocate_index */
1314 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1315 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1316 index = gst_buffer_new_and_alloc (allocate_size);
1317 data = GST_BUFFER_DATA (index);
1319 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1320 memcpy (data + 2, "keyframes", 9);
1321 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1322 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1323 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1324 memcpy (data + 18, "times", 5);
1325 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1326 GST_WRITE_UINT32_BE (data + 24, index_len);
1329 /* the keyframes' times */
1330 for (i = 0, l = mux->index; l; l = l->next, i++) {
1331 GstFlvMuxIndexEntry *entry = l->data;
1333 if (i % index_skip != 0)
1335 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1336 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1340 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1341 memcpy (data + 2, "filepositions", 13);
1342 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1343 GST_WRITE_UINT32_BE (data + 16, index_len);
1346 /* the keyframes' file positions */
1347 for (i = 0, l = mux->index; l; l = l->next, i++) {
1348 GstFlvMuxIndexEntry *entry = l->data;
1350 if (i % index_skip != 0)
1352 GST_WRITE_UINT8 (data, 0);
1353 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1357 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1359 /* If there is space left in the prefilled area, reinsert the filler.
1360 There is at least 18 bytes free, so it will always fit. */
1361 if (index_len < MAX_INDEX_ENTRIES) {
1364 guint32 remaining_filler_size;
1366 tmp = gst_buffer_new_and_alloc (14);
1367 data = GST_BUFFER_DATA (tmp);
1368 GST_WRITE_UINT16_BE (data, 9);
1369 memcpy (data + 2, "gstfiller", 9);
1370 GST_WRITE_UINT8 (data + 11, 2); /* string */
1372 /* There is 18 bytes per remaining index entry minus what is used for
1373 * the'gstfiller' key. The rest is already filled with spaces, so just need
1374 * to update length. */
1375 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1376 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1377 remaining_filler_size);
1378 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1379 index = gst_buffer_join (index, tmp);
1382 rewrite = gst_buffer_join (rewrite, index);
1384 gst_buffer_set_caps (rewrite, GST_PAD_CAPS (mux->srcpad));
1385 return gst_flv_mux_push (mux, rewrite);
1388 static GstFlowReturn
1389 gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data)
1391 GstFlvMux *mux = GST_FLV_MUX (user_data);
1393 GstClockTime best_time;
1396 gboolean eos = TRUE;
1398 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1399 if (mux->collect->data == NULL) {
1400 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1401 ("No input streams configured"));
1402 return GST_FLOW_ERROR;
1405 if (gst_pad_push_event (mux->srcpad,
1406 gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0)))
1407 ret = gst_flv_mux_write_header (mux);
1409 ret = GST_FLOW_ERROR;
1411 if (ret != GST_FLOW_OK)
1413 mux->state = GST_FLV_MUX_STATE_DATA;
1416 if (mux->new_tags) {
1417 GstBuffer *buf = gst_flv_mux_create_metadata (mux);
1418 gst_flv_mux_push (mux, buf);
1419 mux->new_tags = FALSE;
1424 best_time = GST_CLOCK_TIME_NONE;
1425 for (sl = mux->collect->data; sl; sl = sl->next) {
1426 GstFlvPad *cpad = sl->data;
1427 GstBuffer *buffer = gst_collect_pads_peek (pads, (GstCollectData *) cpad);
1435 time = GST_BUFFER_TIMESTAMP (buffer);
1436 gst_buffer_unref (buffer);
1438 /* Use buffers without valid timestamp first */
1439 if (!GST_CLOCK_TIME_IS_VALID (time)) {
1440 GST_WARNING_OBJECT (pads, "Buffer without valid timestamp");
1442 best_time = cpad->last_timestamp;
1447 time = gst_segment_to_running_time (&cpad->collect.segment,
1448 GST_FORMAT_TIME, time);
1449 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
1450 GST_DEBUG_OBJECT (mux, "clipping buffer on pad %s outside segment",
1451 GST_PAD_NAME (cpad->collect.pad));
1452 buffer = gst_collect_pads_pop (pads, (GstCollectData *) cpad);
1453 gst_buffer_unref (buffer);
1457 if (best == NULL || (GST_CLOCK_TIME_IS_VALID (best_time)
1458 && time < best_time)) {
1464 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1465 bigger timestamp is seen, for live the timestamp will get wrapped in
1466 gst_flv_mux_buffer_to_tag */
1467 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1468 && best_time / GST_MSECOND > G_MAXINT32) {
1469 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1474 return gst_flv_mux_write_buffer (mux, best);
1476 gst_flv_mux_rewrite_header (mux);
1477 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1478 return GST_FLOW_UNEXPECTED;
1485 gst_flv_mux_get_property (GObject * object,
1486 guint prop_id, GValue * value, GParamSpec * pspec)
1488 GstFlvMux *mux = GST_FLV_MUX (object);
1491 case PROP_STREAMABLE:
1492 g_value_set_boolean (value, mux->streamable);
1495 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1501 gst_flv_mux_set_property (GObject * object,
1502 guint prop_id, const GValue * value, GParamSpec * pspec)
1504 GstFlvMux *mux = GST_FLV_MUX (object);
1507 case PROP_STREAMABLE:
1508 mux->streamable = g_value_get_boolean (value);
1509 if (mux->streamable)
1510 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1511 GST_TAG_MERGE_REPLACE);
1513 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1514 GST_TAG_MERGE_KEEP);
1517 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1522 static GstStateChangeReturn
1523 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1525 GstStateChangeReturn ret;
1526 GstFlvMux *mux = GST_FLV_MUX (element);
1528 switch (transition) {
1529 case GST_STATE_CHANGE_NULL_TO_READY:
1531 case GST_STATE_CHANGE_READY_TO_PAUSED:
1532 gst_collect_pads_start (mux->collect);
1534 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1536 case GST_STATE_CHANGE_PAUSED_TO_READY:
1537 gst_collect_pads_stop (mux->collect);
1543 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1545 switch (transition) {
1546 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1548 case GST_STATE_CHANGE_PAUSED_TO_READY:
1549 gst_flv_mux_reset (GST_ELEMENT (mux));
1551 case GST_STATE_CHANGE_READY_TO_NULL: