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., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
22 * SECTION:element-flvmux
24 * flvmux muxes different streams into an FLV file.
27 * <title>Example launch line</title>
29 * gst-launch-1.0 -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 <gst/audio/audio.h>
43 #include "gstflvmux.h"
46 GST_DEBUG_CATEGORY_STATIC (flvmux_debug);
47 #define GST_CAT_DEFAULT flvmux_debug
55 #define DEFAULT_STREAMABLE FALSE
56 #define MAX_INDEX_ENTRIES 128
58 static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
61 GST_STATIC_CAPS ("video/x-flv")
64 static GstStaticPadTemplate videosink_templ = GST_STATIC_PAD_TEMPLATE ("video",
67 GST_STATIC_CAPS ("video/x-flash-video; "
68 "video/x-flash-screen; "
69 "video/x-vp6-flash; " "video/x-vp6-alpha; "
70 "video/x-h264, stream-format=avc;")
73 static GstStaticPadTemplate audiosink_templ = GST_STATIC_PAD_TEMPLATE ("audio",
77 ("audio/x-adpcm, layout = (string) swf, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
78 "audio/mpeg, mpegversion = (int) 1, layer = (int) 3, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 22050, 44100 }, parsed = (boolean) TRUE; "
79 "audio/mpeg, mpegversion = (int) 2, framed = (boolean) TRUE; "
80 "audio/mpeg, mpegversion = (int) 4, stream-format = (string) raw, framed = (boolean) TRUE; "
81 "audio/x-nellymoser, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 16000, 22050, 44100 }; "
82 "audio/x-raw, format = (string) { U8, S16LE}, layout = (string) interleaved, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
83 "audio/x-alaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
84 "audio/x-mulaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
85 "audio/x-speex, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 };")
88 #define gst_flv_mux_parent_class parent_class
89 G_DEFINE_TYPE_WITH_CODE (GstFlvMux, gst_flv_mux, GST_TYPE_ELEMENT,
90 G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL));
92 static void gst_flv_mux_finalize (GObject * object);
94 gst_flv_mux_handle_buffer (GstCollectPads * pads, GstCollectData * cdata,
95 GstBuffer * buf, gpointer user_data);
97 gst_flv_mux_handle_sink_event (GstCollectPads * pads, GstCollectData * data,
98 GstEvent * event, gpointer user_data);
100 static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
102 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
103 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps);
104 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
106 static gboolean gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps);
107 static gboolean gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps);
109 static void gst_flv_mux_get_property (GObject * object,
110 guint prop_id, GValue * value, GParamSpec * pspec);
111 static void gst_flv_mux_set_property (GObject * object,
112 guint prop_id, const GValue * value, GParamSpec * pspec);
114 static GstStateChangeReturn
115 gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
117 static void gst_flv_mux_reset (GstElement * element);
118 static void gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * pad,
125 } GstFlvMuxIndexEntry;
128 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
130 g_slice_free (GstFlvMuxIndexEntry, entry);
134 _gst_buffer_new_wrapped (gpointer mem, gsize size, GFreeFunc free_func)
138 buf = gst_buffer_new ();
139 gst_buffer_append_memory (buf,
140 gst_memory_new_wrapped (free_func ? 0 : GST_MEMORY_FLAG_READONLY,
141 mem, size, 0, size, mem, free_func));
147 _gst_buffer_new_and_alloc (gsize size, GstBuffer ** buffer, guint8 ** data)
149 g_return_if_fail (data != NULL);
150 g_return_if_fail (buffer != NULL);
152 *data = g_malloc (size);
153 *buffer = _gst_buffer_new_wrapped (*data, size, g_free);
157 gst_flv_mux_class_init (GstFlvMuxClass * klass)
159 GObjectClass *gobject_class;
160 GstElementClass *gstelement_class;
162 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
164 gobject_class = (GObjectClass *) klass;
165 gstelement_class = (GstElementClass *) klass;
167 gobject_class->get_property = gst_flv_mux_get_property;
168 gobject_class->set_property = gst_flv_mux_set_property;
169 gobject_class->finalize = gst_flv_mux_finalize;
171 /* FIXME: ideally the right mode of operation should be detected
172 * automatically using queries when parameter not specified. */
174 * GstFlvMux:streamable
176 * If True, the output will be streaming friendly. (ie without indexes and
181 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
182 g_param_spec_boolean ("streamable", "streamable",
183 "If set to true, the output should be as if it is to be streamed "
184 "and hence no indexes written or duration written.",
185 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
187 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
188 gstelement_class->request_new_pad =
189 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
190 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
192 gst_element_class_add_pad_template (gstelement_class,
193 gst_static_pad_template_get (&videosink_templ));
194 gst_element_class_add_pad_template (gstelement_class,
195 gst_static_pad_template_get (&audiosink_templ));
196 gst_element_class_add_pad_template (gstelement_class,
197 gst_static_pad_template_get (&src_templ));
198 gst_element_class_set_static_metadata (gstelement_class, "FLV muxer",
200 "Muxes video/audio streams into a FLV stream",
201 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
203 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
207 gst_flv_mux_init (GstFlvMux * mux)
209 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
210 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
211 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
214 mux->streamable = DEFAULT_STREAMABLE;
216 mux->new_tags = FALSE;
218 mux->collect = gst_collect_pads_new ();
219 gst_collect_pads_set_buffer_function (mux->collect,
220 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_buffer), mux);
221 gst_collect_pads_set_event_function (mux->collect,
222 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event), mux);
223 gst_collect_pads_set_clip_function (mux->collect,
224 GST_DEBUG_FUNCPTR (gst_collect_pads_clip_running_time), mux);
226 gst_flv_mux_reset (GST_ELEMENT (mux));
230 gst_flv_mux_finalize (GObject * object)
232 GstFlvMux *mux = GST_FLV_MUX (object);
234 gst_object_unref (mux->collect);
236 G_OBJECT_CLASS (parent_class)->finalize (object);
240 gst_flv_mux_reset (GstElement * element)
242 GstFlvMux *mux = GST_FLV_MUX (element);
245 for (sl = mux->collect->data; sl != NULL; sl = g_slist_next (sl)) {
246 GstFlvPad *cpad = (GstFlvPad *) sl->data;
248 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
251 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
252 g_list_free (mux->index);
256 mux->have_audio = mux->have_video = FALSE;
257 mux->duration = GST_CLOCK_TIME_NONE;
258 mux->new_tags = FALSE;
260 mux->state = GST_FLV_MUX_STATE_HEADER;
263 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
267 gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
272 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
276 /* disable seeking for now */
282 return gst_pad_event_default (pad, parent, event);
286 gst_flv_mux_handle_sink_event (GstCollectPads * pads, GstCollectData * data,
287 GstEvent * event, gpointer user_data)
289 GstFlvMux *mux = GST_FLV_MUX (user_data);
292 switch (GST_EVENT_TYPE (event)) {
298 gst_event_parse_caps (event, &caps);
300 /* find stream data */
301 flvpad = (GstFlvPad *) data;
305 ret = gst_flv_mux_video_pad_setcaps (data->pad, caps);
307 ret = gst_flv_mux_audio_pad_setcaps (data->pad, caps);
310 gst_event_unref (event);
316 GstTagSetter *setter = GST_TAG_SETTER (mux);
317 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
319 gst_event_parse_tag (event, &list);
320 gst_tag_setter_merge_tags (setter, list, mode);
321 mux->new_tags = TRUE;
323 gst_event_unref (event);
332 return gst_collect_pads_event_default (pads, data, event, FALSE);
338 gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
340 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
341 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
345 s = gst_caps_get_structure (caps, 0);
347 if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
348 cpad->video_codec = 2;
349 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
350 cpad->video_codec = 3;
351 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
352 cpad->video_codec = 4;
353 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
354 cpad->video_codec = 5;
355 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
356 cpad->video_codec = 7;
361 if (ret && gst_structure_has_field (s, "codec_data")) {
362 const GValue *val = gst_structure_get_value (s, "codec_data");
365 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
368 gst_object_unref (mux);
374 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
376 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
377 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
381 s = gst_caps_get_structure (caps, 0);
383 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
384 const gchar *layout = gst_structure_get_string (s, "layout");
385 if (layout && strcmp (layout, "swf") == 0) {
386 cpad->audio_codec = 1;
390 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
393 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
394 if (mpegversion == 1) {
397 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
400 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
401 cpad->audio_codec = 14;
403 cpad->audio_codec = 2;
407 } else if (mpegversion == 4 || mpegversion == 2) {
408 cpad->audio_codec = 10;
415 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
418 if (gst_structure_get_int (s, "rate", &rate)
419 && gst_structure_get_int (s, "channels", &channels)) {
420 if (channels == 1 && rate == 16000)
421 cpad->audio_codec = 4;
422 else if (channels == 1 && rate == 8000)
423 cpad->audio_codec = 5;
425 cpad->audio_codec = 6;
427 cpad->audio_codec = 6;
429 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw") == 0) {
432 if (gst_audio_info_from_caps (&info, caps)) {
433 cpad->audio_codec = 3;
435 if (GST_AUDIO_INFO_WIDTH (&info) == 8)
437 else if (GST_AUDIO_INFO_WIDTH (&info) == 16)
443 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
444 cpad->audio_codec = 7;
445 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
446 cpad->audio_codec = 8;
447 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
448 cpad->audio_codec = 11;
456 if (gst_structure_get_int (s, "rate", &rate)) {
457 if (cpad->audio_codec == 10)
459 else if (rate == 5512)
461 else if (rate == 11025)
463 else if (rate == 22050)
465 else if (rate == 44100)
467 else if (rate == 8000 && (cpad->audio_codec == 5
468 || cpad->audio_codec == 14))
470 else if (rate == 16000 && cpad->audio_codec == 4)
474 } else if (cpad->audio_codec == 10) {
480 if (gst_structure_get_int (s, "channels", &channels)) {
481 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
482 || cpad->audio_codec == 6)
484 else if (cpad->audio_codec == 10)
486 else if (channels == 1)
488 else if (channels == 2)
492 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
493 || cpad->audio_codec == 6) {
495 } else if (cpad->audio_codec == 10) {
501 if (cpad->audio_codec != 3)
505 if (ret && gst_structure_has_field (s, "codec_data")) {
506 const GValue *val = gst_structure_get_value (s, "codec_data");
509 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
512 gst_object_unref (mux);
518 gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * cpad, gboolean video)
522 if (cpad->audio_codec_data)
523 gst_buffer_unref (cpad->audio_codec_data);
524 cpad->audio_codec_data = NULL;
525 cpad->audio_codec = G_MAXUINT;
526 cpad->rate = G_MAXUINT;
527 cpad->width = G_MAXUINT;
528 cpad->channels = G_MAXUINT;
530 if (cpad->video_codec_data)
531 gst_buffer_unref (cpad->video_codec_data);
532 cpad->video_codec_data = NULL;
533 cpad->video_codec = G_MAXUINT;
534 cpad->last_timestamp = 0;
538 gst_flv_mux_request_new_pad (GstElement * element,
539 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
541 GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
542 GstFlvMux *mux = GST_FLV_MUX (element);
545 const gchar *name = NULL;
548 if (mux->state != GST_FLV_MUX_STATE_HEADER) {
549 GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
553 if (templ == gst_element_class_get_pad_template (klass, "audio")) {
554 if (mux->have_audio) {
555 GST_WARNING_OBJECT (mux, "Already have an audio pad");
558 mux->have_audio = TRUE;
561 } else if (templ == gst_element_class_get_pad_template (klass, "video")) {
562 if (mux->have_video) {
563 GST_WARNING_OBJECT (mux, "Already have a video pad");
566 mux->have_video = TRUE;
570 GST_WARNING_OBJECT (mux, "Invalid template");
574 pad = gst_pad_new_from_template (templ, name);
575 cpad = (GstFlvPad *) gst_collect_pads_add_pad (mux->collect, pad,
576 sizeof (GstFlvPad), NULL, TRUE);
578 cpad->audio_codec_data = NULL;
579 cpad->video_codec_data = NULL;
580 gst_flv_mux_reset_pad (mux, cpad, video);
582 gst_pad_set_active (pad, TRUE);
583 gst_element_add_pad (element, pad);
589 gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
591 GstFlvMux *mux = GST_FLV_MUX (GST_PAD_PARENT (pad));
592 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
594 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
595 gst_collect_pads_remove_pad (mux->collect, pad);
596 gst_element_remove_pad (element, pad);
600 gst_flv_mux_push (GstFlvMux * mux, GstBuffer * buffer)
602 /* pushing the buffer that rewrites the header will make it no longer be the
603 * total output size in bytes, but it doesn't matter at that point */
604 mux->byte_count += gst_buffer_get_size (buffer);
606 return gst_pad_push (mux->srcpad, buffer);
610 gst_flv_mux_create_header (GstFlvMux * mux)
615 _gst_buffer_new_and_alloc (9 + 4, &header, &data);
620 data[3] = 0x01; /* Version */
622 data[4] = (mux->have_audio << 2) | mux->have_video; /* flags */
623 GST_WRITE_UINT32_BE (data + 5, 9); /* data offset */
624 GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
630 gst_flv_mux_preallocate_index (GstFlvMux * mux)
634 gint preallocate_size;
636 /* preallocate index of size:
637 * - 'keyframes' ECMA array key: 2 + 9 = 11 bytes
638 * - nested ECMA array header, length and end marker: 8 bytes
639 * - 'times' and 'filepositions' keys: 22 bytes
640 * - two strict arrays headers and lengths: 10 bytes
641 * - each index entry: 18 bytes
643 preallocate_size = 11 + 8 + 22 + 10 + MAX_INDEX_ENTRIES * 18;
644 GST_DEBUG_OBJECT (mux, "preallocating %d bytes for the index",
647 _gst_buffer_new_and_alloc (preallocate_size, &tmp, &data);
649 /* prefill the space with a gstfiller: <spaces> script tag variable */
650 GST_WRITE_UINT16_BE (data, 9); /* 9 characters */
651 memcpy (data + 2, "gstfiller", 9);
652 GST_WRITE_UINT8 (data + 11, AMF0_STRING_MARKER); /* a string value */
653 GST_WRITE_UINT16_BE (data + 12, preallocate_size - 14);
654 memset (data + 14, ' ', preallocate_size - 14); /* the rest is spaces */
659 gst_flv_mux_create_number_script_value (const gchar * name, gdouble value)
663 gsize len = strlen (name);
665 _gst_buffer_new_and_alloc (2 + len + 1 + 8, &tmp, &data);
667 GST_WRITE_UINT16_BE (data, len);
668 data += 2; /* name length */
669 memcpy (data, name, len);
671 *data++ = AMF0_NUMBER_MARKER; /* double type */
672 GST_WRITE_DOUBLE_BE (data, value);
678 gst_flv_mux_create_metadata (GstFlvMux * mux, gboolean full)
680 const GstTagList *tags;
681 GstBuffer *script_tag, *tmp;
684 gint i, n_tags, tags_written = 0;
686 tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
688 GST_DEBUG_OBJECT (mux, "tags = %" GST_PTR_FORMAT, tags);
690 /* FIXME perhaps some bytewriter'ing here ... */
692 _gst_buffer_new_and_alloc (11, &script_tag, &data);
696 /* Data size, unknown for now */
702 data[4] = data[5] = data[6] = data[7] = 0;
705 data[8] = data[9] = data[10] = 0;
707 _gst_buffer_new_and_alloc (13, &tmp, &data);
708 data[0] = AMF0_STRING_MARKER; /* string */
710 data[2] = 10; /* length 10 */
711 memcpy (&data[3], "onMetaData", 10);
713 script_tag = gst_buffer_append (script_tag, tmp);
715 n_tags = (tags) ? gst_tag_list_n_tags (tags) : 0;
716 _gst_buffer_new_and_alloc (5, &tmp, &data);
717 data[0] = 8; /* ECMA array */
718 GST_WRITE_UINT32_BE (data + 1, n_tags);
719 script_tag = gst_buffer_append (script_tag, tmp);
724 /* Some players expect the 'duration' to be always set. Fill it out later,
725 after querying the pads or after getting EOS */
726 if (!mux->streamable) {
727 tmp = gst_flv_mux_create_number_script_value ("duration", 86400);
728 script_tag = gst_buffer_append (script_tag, tmp);
731 /* Sometimes the information about the total file size is useful for the
732 player. It will be filled later, after getting EOS */
733 tmp = gst_flv_mux_create_number_script_value ("filesize", 0);
734 script_tag = gst_buffer_append (script_tag, tmp);
737 /* Preallocate space for the index to be written at EOS */
738 tmp = gst_flv_mux_preallocate_index (mux);
739 script_tag = gst_buffer_append (script_tag, tmp);
741 GST_DEBUG_OBJECT (mux, "not preallocating index, streamable mode");
745 for (i = 0; tags && i < n_tags; i++) {
746 const gchar *tag_name = gst_tag_list_nth_tag_name (tags, i);
747 if (!strcmp (tag_name, GST_TAG_DURATION)) {
750 if (!gst_tag_list_get_uint64 (tags, GST_TAG_DURATION, &dur))
753 } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
754 !strcmp (tag_name, GST_TAG_TITLE)) {
756 const gchar *t = NULL;
758 if (!strcmp (tag_name, GST_TAG_ARTIST))
760 else if (!strcmp (tag_name, GST_TAG_TITLE))
763 if (!gst_tag_list_get_string (tags, tag_name, &s))
766 _gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s),
768 data[0] = 0; /* tag name length */
769 data[1] = strlen (t);
770 memcpy (&data[2], t, strlen (t));
771 data[2 + strlen (t)] = 2; /* string */
772 data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
773 data[4 + strlen (t)] = (strlen (s)) & 0xff;
774 memcpy (&data[5 + strlen (t)], s, strlen (s));
775 script_tag = gst_buffer_append (script_tag, tmp);
785 if (mux->duration == GST_CLOCK_TIME_NONE) {
789 for (l = mux->collect->data; l; l = l->next) {
790 GstCollectData *cdata = l->data;
792 if (gst_pad_peer_query_duration (cdata->pad, GST_FORMAT_TIME,
793 (gint64 *) & dur) && dur != GST_CLOCK_TIME_NONE) {
794 if (mux->duration == GST_CLOCK_TIME_NONE)
797 mux->duration = MAX (dur, mux->duration);
802 if (!mux->streamable && mux->duration != GST_CLOCK_TIME_NONE) {
806 d = gst_guint64_to_gdouble (mux->duration);
807 d /= (gdouble) GST_SECOND;
809 GST_DEBUG_OBJECT (mux, "determined the duration to be %f", d);
810 gst_buffer_map (script_tag, &map, GST_MAP_WRITE);
811 GST_WRITE_DOUBLE_BE (map.data + 29 + 2 + 8 + 1, d);
812 gst_buffer_unmap (script_tag, &map);
815 if (mux->have_video) {
816 GstPad *video_pad = NULL;
818 GSList *l = mux->collect->data;
820 for (; l; l = l->next) {
822 if (cpad && cpad->video) {
823 video_pad = cpad->collect.pad;
828 if (video_pad && gst_pad_has_current_caps (video_pad)) {
834 GST_DEBUG_OBJECT (mux, "putting videocodecid %d in the metadata",
837 tmp = gst_flv_mux_create_number_script_value ("videocodecid",
839 script_tag = gst_buffer_append (script_tag, tmp);
842 caps = gst_pad_get_current_caps (video_pad);
843 s = gst_caps_get_structure (caps, 0);
844 gst_caps_unref (caps);
846 if (gst_structure_get_int (s, "width", &size)) {
847 GST_DEBUG_OBJECT (mux, "putting width %d in the metadata", size);
849 tmp = gst_flv_mux_create_number_script_value ("width", size);
850 script_tag = gst_buffer_append (script_tag, tmp);
854 if (gst_structure_get_int (s, "height", &size)) {
855 GST_DEBUG_OBJECT (mux, "putting height %d in the metadata", size);
857 tmp = gst_flv_mux_create_number_script_value ("height", size);
858 script_tag = gst_buffer_append (script_tag, tmp);
862 if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &num, &den)) {
866 GST_DEBUG_OBJECT (mux, "putting AspectRatioX %f in the metadata", d);
868 tmp = gst_flv_mux_create_number_script_value ("AspectRatioX", d);
869 script_tag = gst_buffer_append (script_tag, tmp);
873 GST_DEBUG_OBJECT (mux, "putting AspectRatioY %f in the metadata", d);
875 tmp = gst_flv_mux_create_number_script_value ("AspectRatioY", d);
876 script_tag = gst_buffer_append (script_tag, tmp);
880 if (gst_structure_get_fraction (s, "framerate", &num, &den)) {
883 gst_util_fraction_to_double (num, den, &d);
884 GST_DEBUG_OBJECT (mux, "putting framerate %f in the metadata", d);
886 tmp = gst_flv_mux_create_number_script_value ("framerate", d);
887 script_tag = gst_buffer_append (script_tag, tmp);
893 if (mux->have_audio) {
894 GstPad *audio_pad = NULL;
896 GSList *l = mux->collect->data;
898 for (; l; l = l->next) {
900 if (cpad && !cpad->video) {
901 audio_pad = cpad->collect.pad;
907 GST_DEBUG_OBJECT (mux, "putting audiocodecid %d in the metadata",
910 tmp = gst_flv_mux_create_number_script_value ("audiocodecid",
912 script_tag = gst_buffer_append (script_tag, tmp);
918 const gchar *s = "GStreamer FLV muxer";
920 _gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s), &tmp, &data);
921 data[0] = 0; /* 15 bytes name */
923 memcpy (&data[2], "metadatacreator", 15);
924 data[17] = 2; /* string */
925 data[18] = (strlen (s) >> 8) & 0xff;
926 data[19] = (strlen (s)) & 0xff;
927 memcpy (&data[20], s, strlen (s));
928 script_tag = gst_buffer_append (script_tag, tmp);
934 GTimeVal tv = { 0, };
938 static const gchar *weekdays[] = {
939 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
941 static const gchar *months[] = {
942 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
943 "Aug", "Sep", "Oct", "Nov", "Dec"
946 g_get_current_time (&tv);
950 s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
951 months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
954 _gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s), &tmp, &data);
955 data[0] = 0; /* 12 bytes name */
957 memcpy (&data[2], "creationdate", 12);
958 data[14] = 2; /* string */
959 data[15] = (strlen (s) >> 8) & 0xff;
960 data[16] = (strlen (s)) & 0xff;
961 memcpy (&data[17], s, strlen (s));
962 script_tag = gst_buffer_append (script_tag, tmp);
971 gst_buffer_unref (script_tag);
976 _gst_buffer_new_and_alloc (2 + 0 + 1, &tmp, &data);
977 data[0] = 0; /* 0 byte size */
979 data[2] = 9; /* end marker */
980 script_tag = gst_buffer_append (script_tag, tmp);
983 _gst_buffer_new_and_alloc (4, &tmp, &data);
984 GST_WRITE_UINT32_BE (data, gst_buffer_get_size (script_tag));
985 script_tag = gst_buffer_append (script_tag, tmp);
987 gst_buffer_map (script_tag, &map, GST_MAP_WRITE);
988 map.data[1] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 16) & 0xff;
989 map.data[2] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 8) & 0xff;
990 map.data[3] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 0) & 0xff;
992 GST_WRITE_UINT32_BE (map.data + 11 + 13 + 1, tags_written);
993 gst_buffer_unmap (script_tag, &map);
1000 gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
1001 GstFlvPad * cpad, gboolean is_codec_data)
1007 (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) ? GST_BUFFER_TIMESTAMP (buffer) /
1008 GST_MSECOND : cpad->last_timestamp / GST_MSECOND;
1009 guint8 *data, *bdata;
1012 gst_buffer_map (buffer, &map, GST_MAP_READ);
1019 if (cpad->video_codec == 7)
1025 if (cpad->audio_codec == 10)
1032 _gst_buffer_new_and_alloc (size, &tag, &data);
1033 GST_BUFFER_TIMESTAMP (tag) = timestamp * GST_MSECOND;
1034 memset (data, 0, size);
1036 data[0] = (cpad->video) ? 9 : 8;
1038 data[1] = ((size - 11 - 4) >> 16) & 0xff;
1039 data[2] = ((size - 11 - 4) >> 8) & 0xff;
1040 data[3] = ((size - 11 - 4) >> 0) & 0xff;
1042 /* wrap the timestamp every G_MAXINT32 miliseconds */
1043 timestamp &= 0x7fffffff;
1044 data[4] = (timestamp >> 16) & 0xff;
1045 data[5] = (timestamp >> 8) & 0xff;
1046 data[6] = (timestamp >> 0) & 0xff;
1047 data[7] = (timestamp >> 24) & 0xff;
1049 data[8] = data[9] = data[10] = 0;
1052 if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1057 data[11] |= cpad->video_codec & 0x0f;
1059 if (cpad->video_codec == 7) {
1060 data[12] = is_codec_data ? 0 : 1;
1062 /* FIXME: what to do about composition time */
1063 data[13] = data[14] = data[15] = 0;
1065 memcpy (data + 11 + 1 + 4, bdata, bsize);
1067 memcpy (data + 11 + 1, bdata, bsize);
1070 data[11] |= (cpad->audio_codec << 4) & 0xf0;
1071 data[11] |= (cpad->rate << 2) & 0x0c;
1072 data[11] |= (cpad->width << 1) & 0x02;
1073 data[11] |= (cpad->channels << 0) & 0x01;
1075 if (cpad->audio_codec == 10) {
1076 data[12] = is_codec_data ? 0 : 1;
1078 memcpy (data + 11 + 1 + 1, bdata, bsize);
1080 memcpy (data + 11 + 1, bdata, bsize);
1084 gst_buffer_unmap (buffer, &map);
1086 GST_WRITE_UINT32_BE (data + size - 4, size - 4);
1088 GST_BUFFER_TIMESTAMP (tag) = GST_BUFFER_TIMESTAMP (buffer);
1089 GST_BUFFER_DURATION (tag) = GST_BUFFER_DURATION (buffer);
1090 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET (buffer);
1091 GST_BUFFER_OFFSET_END (tag) = GST_BUFFER_OFFSET_END (buffer);
1093 /* mark the buffer if it's an audio buffer and there's also video being muxed
1094 * or it's a video interframe */
1095 if ((mux->have_video && !cpad->video) ||
1096 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1097 GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
1099 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
1100 GST_BUFFER_OFFSET_NONE;
1105 static inline GstBuffer *
1106 gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1109 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
1112 static inline GstBuffer *
1113 gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1116 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
1120 gst_flv_mux_put_buffer_in_streamheader (GValue * streamheader,
1123 GValue value = { 0 };
1126 g_value_init (&value, GST_TYPE_BUFFER);
1127 buf = gst_buffer_copy (buffer);
1128 gst_value_set_buffer (&value, buf);
1129 gst_buffer_unref (buf);
1130 gst_value_array_append_value (streamheader, &value);
1131 g_value_unset (&value);
1134 static GstFlowReturn
1135 gst_flv_mux_write_header (GstFlvMux * mux)
1137 GstBuffer *header, *metadata;
1138 GstBuffer *video_codec_data, *audio_codec_data;
1140 GstStructure *structure;
1141 GValue streamheader = { 0 };
1145 /* if not streaming, check if downstream is seekable */
1146 if (!mux->streamable) {
1150 query = gst_query_new_seeking (GST_FORMAT_BYTES);
1151 if (gst_pad_peer_query (mux->srcpad, query)) {
1152 gst_query_parse_seeking (query, NULL, &seekable, NULL, NULL);
1153 GST_INFO_OBJECT (mux, "downstream is %sseekable", seekable ? "" : "not ");
1155 /* have to assume seeking is supported if query not handled downstream */
1156 GST_WARNING_OBJECT (mux, "downstream did not handle seeking query");
1160 mux->streamable = TRUE;
1161 g_object_notify (G_OBJECT (mux), "streamable");
1162 GST_WARNING_OBJECT (mux, "downstream is not seekable, but "
1163 "streamable=false. Will ignore that and create streamable output "
1166 gst_query_unref (query);
1169 header = gst_flv_mux_create_header (mux);
1170 metadata = gst_flv_mux_create_metadata (mux, TRUE);
1171 video_codec_data = NULL;
1172 audio_codec_data = NULL;
1174 for (l = mux->collect->data; l != NULL; l = l->next) {
1175 GstFlvPad *cpad = l->data;
1177 /* Get H.264 and AAC codec data, if present */
1178 if (cpad && cpad->video && cpad->video_codec == 7) {
1179 if (cpad->video_codec_data == NULL)
1180 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1181 "output might not be playable");
1184 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1186 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1187 if (cpad->audio_codec_data == NULL)
1188 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1189 "output might not be playable");
1192 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1197 /* mark buffers that will go in the streamheader */
1198 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_HEADER);
1199 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_HEADER);
1200 if (video_codec_data != NULL) {
1201 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_HEADER);
1202 /* mark as a delta unit, so downstream will not try to synchronize on that
1203 * buffer - to actually start playback you need a real video keyframe */
1204 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1206 if (audio_codec_data != NULL) {
1207 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_HEADER);
1210 /* put buffers in streamheader */
1211 g_value_init (&streamheader, GST_TYPE_ARRAY);
1212 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1213 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1214 if (video_codec_data != NULL)
1215 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1216 if (audio_codec_data != NULL)
1217 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1219 /* create the caps and put the streamheader in them */
1220 caps = gst_caps_new_empty_simple ("video/x-flv");
1221 structure = gst_caps_get_structure (caps, 0);
1222 gst_structure_set_value (structure, "streamheader", &streamheader);
1223 g_value_unset (&streamheader);
1225 if (!gst_pad_has_current_caps (mux->srcpad))
1226 gst_pad_set_caps (mux->srcpad, caps);
1228 gst_caps_unref (caps);
1230 /* push the header buffer, the metadata and the codec info, if any */
1231 ret = gst_flv_mux_push (mux, header);
1232 if (ret != GST_FLOW_OK)
1234 ret = gst_flv_mux_push (mux, metadata);
1235 if (ret != GST_FLOW_OK)
1237 if (video_codec_data != NULL) {
1238 ret = gst_flv_mux_push (mux, video_codec_data);
1239 if (ret != GST_FLOW_OK)
1242 if (audio_codec_data != NULL) {
1243 ret = gst_flv_mux_push (mux, audio_codec_data);
1244 if (ret != GST_FLOW_OK)
1251 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1254 * Add the tag byte offset and to the index if it's a valid seek point, which
1255 * means it's either a video keyframe or if there is no video pad (in that
1256 * case every FLV tag is a valid seek point)
1258 if (mux->have_video &&
1260 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1263 if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
1264 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1265 entry->position = mux->byte_count;
1267 gst_guint64_to_gdouble (GST_BUFFER_TIMESTAMP (buffer)) / GST_SECOND;
1268 mux->index = g_list_prepend (mux->index, entry);
1272 static GstFlowReturn
1273 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad, GstBuffer * buffer)
1278 /* clipping function arranged for running_time */
1280 if (!mux->streamable)
1281 gst_flv_mux_update_index (mux, buffer, cpad);
1283 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1285 gst_buffer_unref (buffer);
1287 ret = gst_flv_mux_push (mux, tag);
1289 if (ret == GST_FLOW_OK && GST_BUFFER_TIMESTAMP_IS_VALID (tag))
1290 cpad->last_timestamp = GST_BUFFER_TIMESTAMP (tag);
1296 gst_flv_mux_determine_duration (GstFlvMux * mux)
1299 GstClockTime duration = GST_CLOCK_TIME_NONE;
1301 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1302 "from pad timestamps");
1304 for (l = mux->collect->data; l != NULL; l = l->next) {
1305 GstFlvPad *cpad = l->data;
1307 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1308 if (duration == GST_CLOCK_TIME_NONE)
1309 duration = cpad->last_timestamp;
1311 duration = MAX (duration, cpad->last_timestamp);
1318 static GstFlowReturn
1319 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1321 GstBuffer *rewrite, *index, *tmp;
1326 guint32 index_len, allocate_size;
1327 guint32 i, index_skip;
1331 if (mux->streamable)
1334 /* seek back to the preallocated index space */
1335 gst_segment_init (&segment, GST_FORMAT_BYTES);
1336 segment.start = segment.time = 13 + 29;
1337 event = gst_event_new_segment (&segment);
1338 if (!gst_pad_push_event (mux->srcpad, event)) {
1339 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1343 /* determine duration now based on our own timestamping,
1344 * so that it is likely many times better and consistent
1345 * than whatever obtained by some query */
1346 dur = gst_flv_mux_determine_duration (mux);
1347 if (dur != GST_CLOCK_TIME_NONE)
1348 mux->duration = dur;
1350 /* rewrite the duration tag */
1351 d = gst_guint64_to_gdouble (mux->duration);
1352 d /= (gdouble) GST_SECOND;
1354 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1356 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1358 /* rewrite the filesize tag */
1359 d = gst_guint64_to_gdouble (mux->byte_count);
1361 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1363 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1364 rewrite = gst_buffer_append (rewrite, tmp);
1367 /* no index, so push buffer and return */
1368 return gst_flv_mux_push (mux, rewrite);
1371 /* rewrite the index */
1372 mux->index = g_list_reverse (mux->index);
1373 index_len = g_list_length (mux->index);
1375 /* We write at most MAX_INDEX_ENTRIES elements */
1376 if (index_len > MAX_INDEX_ENTRIES) {
1377 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1378 index_len = (index_len + index_skip - 1) / index_skip;
1383 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1384 /* see size calculation in gst_flv_mux_preallocate_index */
1385 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1386 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1387 _gst_buffer_new_and_alloc (allocate_size, &index, &data);
1389 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1390 memcpy (data + 2, "keyframes", 9);
1391 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1392 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1393 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1394 memcpy (data + 18, "times", 5);
1395 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1396 GST_WRITE_UINT32_BE (data + 24, index_len);
1399 /* the keyframes' times */
1400 for (i = 0, l = mux->index; l; l = l->next, i++) {
1401 GstFlvMuxIndexEntry *entry = l->data;
1403 if (i % index_skip != 0)
1405 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1406 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1410 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1411 memcpy (data + 2, "filepositions", 13);
1412 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1413 GST_WRITE_UINT32_BE (data + 16, index_len);
1416 /* the keyframes' file positions */
1417 for (i = 0, l = mux->index; l; l = l->next, i++) {
1418 GstFlvMuxIndexEntry *entry = l->data;
1420 if (i % index_skip != 0)
1422 GST_WRITE_UINT8 (data, 0);
1423 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1427 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1429 /* If there is space left in the prefilled area, reinsert the filler.
1430 There is at least 18 bytes free, so it will always fit. */
1431 if (index_len < MAX_INDEX_ENTRIES) {
1434 guint32 remaining_filler_size;
1436 _gst_buffer_new_and_alloc (14, &tmp, &data);
1437 GST_WRITE_UINT16_BE (data, 9);
1438 memcpy (data + 2, "gstfiller", 9);
1439 GST_WRITE_UINT8 (data + 11, 2); /* string */
1441 /* There is 18 bytes per remaining index entry minus what is used for
1442 * the'gstfiller' key. The rest is already filled with spaces, so just need
1443 * to update length. */
1444 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1445 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1446 remaining_filler_size);
1447 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1448 index = gst_buffer_append (index, tmp);
1451 rewrite = gst_buffer_append (rewrite, index);
1453 return gst_flv_mux_push (mux, rewrite);
1456 static GstFlowReturn
1457 gst_flv_mux_handle_buffer (GstCollectPads * pads, GstCollectData * cdata,
1458 GstBuffer * buffer, gpointer user_data)
1460 GstFlvMux *mux = GST_FLV_MUX (user_data);
1462 GstClockTime best_time;
1465 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1469 if (mux->collect->data == NULL) {
1470 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1471 ("No input streams configured"));
1472 return GST_FLOW_ERROR;
1475 /* stream-start (FIXME: create id based on input ids) */
1476 g_snprintf (s_id, sizeof (s_id), "flvmux-%08x", g_random_int ());
1477 gst_pad_push_event (mux->srcpad, gst_event_new_stream_start (s_id));
1480 gst_segment_init (&segment, GST_FORMAT_BYTES);
1481 if (gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment)))
1482 ret = gst_flv_mux_write_header (mux);
1484 ret = GST_FLOW_ERROR;
1486 if (ret != GST_FLOW_OK)
1488 mux->state = GST_FLV_MUX_STATE_DATA;
1491 if (mux->new_tags) {
1492 GstBuffer *buf = gst_flv_mux_create_metadata (mux, FALSE);
1494 gst_flv_mux_push (mux, buf);
1495 mux->new_tags = FALSE;
1498 best = (GstFlvPad *) cdata;
1501 best_time = GST_BUFFER_TIMESTAMP (buffer);
1503 best_time = GST_CLOCK_TIME_NONE;
1506 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1507 bigger timestamp is seen, for live the timestamp will get wrapped in
1508 gst_flv_mux_buffer_to_tag */
1509 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1510 && best_time / GST_MSECOND > G_MAXINT32) {
1511 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1512 gst_buffer_unref (buffer);
1518 return gst_flv_mux_write_buffer (mux, best, buffer);
1520 gst_flv_mux_rewrite_header (mux);
1521 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1522 return GST_FLOW_EOS;
1527 gst_flv_mux_get_property (GObject * object,
1528 guint prop_id, GValue * value, GParamSpec * pspec)
1530 GstFlvMux *mux = GST_FLV_MUX (object);
1533 case PROP_STREAMABLE:
1534 g_value_set_boolean (value, mux->streamable);
1537 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1543 gst_flv_mux_set_property (GObject * object,
1544 guint prop_id, const GValue * value, GParamSpec * pspec)
1546 GstFlvMux *mux = GST_FLV_MUX (object);
1549 case PROP_STREAMABLE:
1550 mux->streamable = g_value_get_boolean (value);
1551 if (mux->streamable)
1552 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1553 GST_TAG_MERGE_REPLACE);
1555 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1556 GST_TAG_MERGE_KEEP);
1559 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1564 static GstStateChangeReturn
1565 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1567 GstStateChangeReturn ret;
1568 GstFlvMux *mux = GST_FLV_MUX (element);
1570 switch (transition) {
1571 case GST_STATE_CHANGE_NULL_TO_READY:
1573 case GST_STATE_CHANGE_READY_TO_PAUSED:
1574 gst_collect_pads_start (mux->collect);
1576 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1578 case GST_STATE_CHANGE_PAUSED_TO_READY:
1579 gst_collect_pads_stop (mux->collect);
1585 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1587 switch (transition) {
1588 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1590 case GST_STATE_CHANGE_PAUSED_TO_READY:
1591 gst_flv_mux_reset (GST_ELEMENT (mux));
1593 case GST_STATE_CHANGE_READY_TO_NULL: