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 flvmux name=mux ! filesink location=test.flv audiotestsrc samplesperbuffer=44100 num-buffers=10 ! faac ! mux. videotestsrc num-buffers=250 ! video/x-raw,framerate=25/1 ! x264enc ! mux.
30 * ]| This pipeline encodes a test audio and video stream and muxes both into an 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) { 4, 2 }, stream-format = (string) raw; "
80 "audio/x-nellymoser, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 16000, 22050, 44100 }; "
81 "audio/x-raw, format = (string) { U8, S16LE}, layout = (string) interleaved, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
82 "audio/x-alaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
83 "audio/x-mulaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
84 "audio/x-speex, channels = (int) 1, rate = (int) 16000;")
87 #define gst_flv_mux_parent_class parent_class
88 G_DEFINE_TYPE_WITH_CODE (GstFlvMux, gst_flv_mux, GST_TYPE_ELEMENT,
89 G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL));
91 static void gst_flv_mux_finalize (GObject * object);
93 gst_flv_mux_handle_buffer (GstCollectPads * pads, GstCollectData * cdata,
94 GstBuffer * buf, gpointer user_data);
96 gst_flv_mux_handle_sink_event (GstCollectPads * pads, GstCollectData * data,
97 GstEvent * event, gpointer user_data);
99 static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
101 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
102 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps);
103 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
105 static gboolean gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps);
106 static gboolean gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps);
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);
117 static void gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * pad,
124 } GstFlvMuxIndexEntry;
127 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
129 g_slice_free (GstFlvMuxIndexEntry, entry);
133 _gst_buffer_new_wrapped (gpointer mem, gsize size, GFreeFunc free_func)
137 buf = gst_buffer_new ();
138 gst_buffer_append_memory (buf,
139 gst_memory_new_wrapped (free_func ? 0 : GST_MEMORY_FLAG_READONLY,
140 mem, size, 0, size, mem, free_func));
146 _gst_buffer_new_and_alloc (gsize size, GstBuffer ** buffer, guint8 ** data)
148 g_return_if_fail (data != NULL);
149 g_return_if_fail (buffer != NULL);
151 *data = g_malloc (size);
152 *buffer = _gst_buffer_new_wrapped (*data, size, g_free);
156 gst_flv_mux_class_init (GstFlvMuxClass * klass)
158 GObjectClass *gobject_class;
159 GstElementClass *gstelement_class;
161 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
163 gobject_class = (GObjectClass *) klass;
164 gstelement_class = (GstElementClass *) klass;
166 gobject_class->get_property = gst_flv_mux_get_property;
167 gobject_class->set_property = gst_flv_mux_set_property;
168 gobject_class->finalize = gst_flv_mux_finalize;
170 /* FIXME: ideally the right mode of operation should be detected
171 * automatically using queries when parameter not specified. */
173 * GstFlvMux:streamable
175 * If True, the output will be streaming friendly. (ie without indexes and
178 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
179 g_param_spec_boolean ("streamable", "streamable",
180 "If set to true, the output should be as if it is to be streamed "
181 "and hence no indexes written or duration written.",
182 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
184 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
185 gstelement_class->request_new_pad =
186 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
187 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
189 gst_element_class_add_pad_template (gstelement_class,
190 gst_static_pad_template_get (&videosink_templ));
191 gst_element_class_add_pad_template (gstelement_class,
192 gst_static_pad_template_get (&audiosink_templ));
193 gst_element_class_add_pad_template (gstelement_class,
194 gst_static_pad_template_get (&src_templ));
195 gst_element_class_set_static_metadata (gstelement_class, "FLV muxer",
197 "Muxes video/audio streams into a FLV stream",
198 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
200 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
204 gst_flv_mux_init (GstFlvMux * mux)
206 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
207 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
208 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
211 mux->streamable = DEFAULT_STREAMABLE;
213 mux->new_tags = FALSE;
215 mux->collect = gst_collect_pads_new ();
216 gst_collect_pads_set_buffer_function (mux->collect,
217 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_buffer), mux);
218 gst_collect_pads_set_event_function (mux->collect,
219 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event), mux);
220 gst_collect_pads_set_clip_function (mux->collect,
221 GST_DEBUG_FUNCPTR (gst_collect_pads_clip_running_time), mux);
223 gst_flv_mux_reset (GST_ELEMENT (mux));
227 gst_flv_mux_finalize (GObject * object)
229 GstFlvMux *mux = GST_FLV_MUX (object);
231 gst_object_unref (mux->collect);
233 G_OBJECT_CLASS (parent_class)->finalize (object);
237 gst_flv_mux_reset (GstElement * element)
239 GstFlvMux *mux = GST_FLV_MUX (element);
242 for (sl = mux->collect->data; sl != NULL; sl = g_slist_next (sl)) {
243 GstFlvPad *cpad = (GstFlvPad *) sl->data;
245 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
248 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
249 g_list_free (mux->index);
253 mux->have_audio = mux->have_video = FALSE;
254 mux->duration = GST_CLOCK_TIME_NONE;
255 mux->new_tags = FALSE;
257 mux->state = GST_FLV_MUX_STATE_HEADER;
260 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
264 gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
269 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
273 /* disable seeking for now */
279 return gst_pad_event_default (pad, parent, event);
283 gst_flv_mux_handle_sink_event (GstCollectPads * pads, GstCollectData * data,
284 GstEvent * event, gpointer user_data)
286 GstFlvMux *mux = GST_FLV_MUX (user_data);
289 switch (GST_EVENT_TYPE (event)) {
295 gst_event_parse_caps (event, &caps);
297 /* find stream data */
298 flvpad = (GstFlvPad *) data;
302 ret = gst_flv_mux_video_pad_setcaps (data->pad, caps);
304 ret = gst_flv_mux_audio_pad_setcaps (data->pad, caps);
307 gst_event_unref (event);
313 GstTagSetter *setter = GST_TAG_SETTER (mux);
314 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
316 gst_event_parse_tag (event, &list);
317 gst_tag_setter_merge_tags (setter, list, mode);
318 mux->new_tags = TRUE;
320 gst_event_unref (event);
329 return gst_collect_pads_event_default (pads, data, event, FALSE);
335 gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
337 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
338 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
342 s = gst_caps_get_structure (caps, 0);
344 if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
345 cpad->video_codec = 2;
346 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
347 cpad->video_codec = 3;
348 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
349 cpad->video_codec = 4;
350 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
351 cpad->video_codec = 5;
352 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
353 cpad->video_codec = 7;
358 if (ret && gst_structure_has_field (s, "codec_data")) {
359 const GValue *val = gst_structure_get_value (s, "codec_data");
362 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
365 gst_object_unref (mux);
371 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
373 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
374 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
378 s = gst_caps_get_structure (caps, 0);
380 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
381 const gchar *layout = gst_structure_get_string (s, "layout");
382 if (layout && strcmp (layout, "swf") == 0) {
383 cpad->audio_codec = 1;
387 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
390 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
391 if (mpegversion == 1) {
394 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
397 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
398 cpad->audio_codec = 14;
400 cpad->audio_codec = 2;
404 } else if (mpegversion == 4 || mpegversion == 2) {
405 cpad->audio_codec = 10;
412 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
415 if (gst_structure_get_int (s, "rate", &rate)
416 && gst_structure_get_int (s, "channels", &channels)) {
417 if (channels == 1 && rate == 16000)
418 cpad->audio_codec = 4;
419 else if (channels == 1 && rate == 8000)
420 cpad->audio_codec = 5;
422 cpad->audio_codec = 6;
424 cpad->audio_codec = 6;
426 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw") == 0) {
429 if (gst_audio_info_from_caps (&info, caps)) {
430 cpad->audio_codec = 3;
432 if (GST_AUDIO_INFO_WIDTH (&info) == 8)
434 else if (GST_AUDIO_INFO_WIDTH (&info) == 16)
440 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
441 cpad->audio_codec = 7;
442 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
443 cpad->audio_codec = 8;
444 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
445 cpad->audio_codec = 11;
453 if (gst_structure_get_int (s, "rate", &rate)) {
454 if (cpad->audio_codec == 10)
456 else if (rate == 5512)
458 else if (rate == 11025)
460 else if (rate == 22050)
462 else if (rate == 44100)
464 else if (rate == 8000 && (cpad->audio_codec == 5
465 || cpad->audio_codec == 14))
467 else if (rate == 16000 && (cpad->audio_codec == 4
468 || cpad->audio_codec == 11))
472 } else if (cpad->audio_codec == 10) {
478 if (gst_structure_get_int (s, "channels", &channels)) {
479 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
480 || cpad->audio_codec == 6 || cpad->audio_codec == 11)
482 else if (cpad->audio_codec == 10)
484 else if (channels == 1)
486 else if (channels == 2)
490 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
491 || cpad->audio_codec == 6) {
493 } else if (cpad->audio_codec == 10) {
499 if (cpad->audio_codec != 3)
503 if (ret && gst_structure_has_field (s, "codec_data")) {
504 const GValue *val = gst_structure_get_value (s, "codec_data");
507 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
510 gst_object_unref (mux);
516 gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * cpad, gboolean video)
520 if (cpad->audio_codec_data)
521 gst_buffer_unref (cpad->audio_codec_data);
522 cpad->audio_codec_data = NULL;
523 cpad->audio_codec = G_MAXUINT;
524 cpad->rate = G_MAXUINT;
525 cpad->width = G_MAXUINT;
526 cpad->channels = G_MAXUINT;
528 if (cpad->video_codec_data)
529 gst_buffer_unref (cpad->video_codec_data);
530 cpad->video_codec_data = NULL;
531 cpad->video_codec = G_MAXUINT;
532 cpad->first_timestamp = GST_CLOCK_TIME_NONE;
533 cpad->last_timestamp = 0;
537 gst_flv_mux_request_new_pad (GstElement * element,
538 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
540 GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
541 GstFlvMux *mux = GST_FLV_MUX (element);
544 const gchar *name = NULL;
547 if (mux->state != GST_FLV_MUX_STATE_HEADER) {
548 GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
552 if (templ == gst_element_class_get_pad_template (klass, "audio")) {
553 if (mux->have_audio) {
554 GST_WARNING_OBJECT (mux, "Already have an audio pad");
557 mux->have_audio = TRUE;
560 } else if (templ == gst_element_class_get_pad_template (klass, "video")) {
561 if (mux->have_video) {
562 GST_WARNING_OBJECT (mux, "Already have a video pad");
565 mux->have_video = TRUE;
569 GST_WARNING_OBJECT (mux, "Invalid template");
573 pad = gst_pad_new_from_template (templ, name);
574 cpad = (GstFlvPad *) gst_collect_pads_add_pad (mux->collect, pad,
575 sizeof (GstFlvPad), NULL, TRUE);
577 cpad->audio_codec_data = NULL;
578 cpad->video_codec_data = NULL;
579 gst_flv_mux_reset_pad (mux, cpad, video);
581 gst_pad_set_active (pad, TRUE);
582 gst_element_add_pad (element, pad);
588 gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
590 GstFlvMux *mux = GST_FLV_MUX (GST_PAD_PARENT (pad));
591 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
593 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
594 gst_collect_pads_remove_pad (mux->collect, pad);
595 gst_element_remove_pad (element, pad);
599 gst_flv_mux_push (GstFlvMux * mux, GstBuffer * buffer)
601 /* pushing the buffer that rewrites the header will make it no longer be the
602 * total output size in bytes, but it doesn't matter at that point */
603 mux->byte_count += gst_buffer_get_size (buffer);
605 return gst_pad_push (mux->srcpad, buffer);
609 gst_flv_mux_create_header (GstFlvMux * mux)
614 _gst_buffer_new_and_alloc (9 + 4, &header, &data);
619 data[3] = 0x01; /* Version */
621 data[4] = (mux->have_audio << 2) | mux->have_video; /* flags */
622 GST_WRITE_UINT32_BE (data + 5, 9); /* data offset */
623 GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
629 gst_flv_mux_preallocate_index (GstFlvMux * mux)
633 gint preallocate_size;
635 /* preallocate index of size:
636 * - 'keyframes' ECMA array key: 2 + 9 = 11 bytes
637 * - nested ECMA array header, length and end marker: 8 bytes
638 * - 'times' and 'filepositions' keys: 22 bytes
639 * - two strict arrays headers and lengths: 10 bytes
640 * - each index entry: 18 bytes
642 preallocate_size = 11 + 8 + 22 + 10 + MAX_INDEX_ENTRIES * 18;
643 GST_DEBUG_OBJECT (mux, "preallocating %d bytes for the index",
646 _gst_buffer_new_and_alloc (preallocate_size, &tmp, &data);
648 /* prefill the space with a gstfiller: <spaces> script tag variable */
649 GST_WRITE_UINT16_BE (data, 9); /* 9 characters */
650 memcpy (data + 2, "gstfiller", 9);
651 GST_WRITE_UINT8 (data + 11, AMF0_STRING_MARKER); /* a string value */
652 GST_WRITE_UINT16_BE (data + 12, preallocate_size - 14);
653 memset (data + 14, ' ', preallocate_size - 14); /* the rest is spaces */
658 gst_flv_mux_create_number_script_value (const gchar * name, gdouble value)
662 gsize len = strlen (name);
664 _gst_buffer_new_and_alloc (2 + len + 1 + 8, &tmp, &data);
666 GST_WRITE_UINT16_BE (data, len);
667 data += 2; /* name length */
668 memcpy (data, name, len);
670 *data++ = AMF0_NUMBER_MARKER; /* double type */
671 GST_WRITE_DOUBLE_BE (data, value);
677 gst_flv_mux_create_metadata (GstFlvMux * mux, gboolean full)
679 const GstTagList *tags;
680 GstBuffer *script_tag, *tmp;
683 gint i, n_tags, tags_written = 0;
685 tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
687 GST_DEBUG_OBJECT (mux, "tags = %" GST_PTR_FORMAT, tags);
689 /* FIXME perhaps some bytewriter'ing here ... */
691 _gst_buffer_new_and_alloc (11, &script_tag, &data);
695 /* Data size, unknown for now */
701 data[4] = data[5] = data[6] = data[7] = 0;
704 data[8] = data[9] = data[10] = 0;
706 _gst_buffer_new_and_alloc (13, &tmp, &data);
707 data[0] = AMF0_STRING_MARKER; /* string */
709 data[2] = 10; /* length 10 */
710 memcpy (&data[3], "onMetaData", 10);
712 script_tag = gst_buffer_append (script_tag, tmp);
714 n_tags = (tags) ? gst_tag_list_n_tags (tags) : 0;
715 _gst_buffer_new_and_alloc (5, &tmp, &data);
716 data[0] = 8; /* ECMA array */
717 GST_WRITE_UINT32_BE (data + 1, n_tags);
718 script_tag = gst_buffer_append (script_tag, tmp);
723 /* Some players expect the 'duration' to be always set. Fill it out later,
724 after querying the pads or after getting EOS */
725 if (!mux->streamable) {
726 tmp = gst_flv_mux_create_number_script_value ("duration", 86400);
727 script_tag = gst_buffer_append (script_tag, tmp);
730 /* Sometimes the information about the total file size is useful for the
731 player. It will be filled later, after getting EOS */
732 tmp = gst_flv_mux_create_number_script_value ("filesize", 0);
733 script_tag = gst_buffer_append (script_tag, tmp);
736 /* Preallocate space for the index to be written at EOS */
737 tmp = gst_flv_mux_preallocate_index (mux);
738 script_tag = gst_buffer_append (script_tag, tmp);
740 GST_DEBUG_OBJECT (mux, "not preallocating index, streamable mode");
744 for (i = 0; tags && i < n_tags; i++) {
745 const gchar *tag_name = gst_tag_list_nth_tag_name (tags, i);
746 if (!strcmp (tag_name, GST_TAG_DURATION)) {
749 if (!gst_tag_list_get_uint64 (tags, GST_TAG_DURATION, &dur))
752 } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
753 !strcmp (tag_name, GST_TAG_TITLE)) {
755 const gchar *t = NULL;
757 if (!strcmp (tag_name, GST_TAG_ARTIST))
759 else if (!strcmp (tag_name, GST_TAG_TITLE))
762 if (!gst_tag_list_get_string (tags, tag_name, &s))
765 _gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s),
767 data[0] = 0; /* tag name length */
768 data[1] = strlen (t);
769 memcpy (&data[2], t, strlen (t));
770 data[2 + strlen (t)] = 2; /* string */
771 data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
772 data[4 + strlen (t)] = (strlen (s)) & 0xff;
773 memcpy (&data[5 + strlen (t)], s, strlen (s));
774 script_tag = gst_buffer_append (script_tag, tmp);
784 if (mux->duration == GST_CLOCK_TIME_NONE) {
788 for (l = mux->collect->data; l; l = l->next) {
789 GstCollectData *cdata = l->data;
791 if (gst_pad_peer_query_duration (cdata->pad, GST_FORMAT_TIME,
792 (gint64 *) & dur) && dur != GST_CLOCK_TIME_NONE) {
793 if (mux->duration == GST_CLOCK_TIME_NONE)
796 mux->duration = MAX (dur, mux->duration);
801 if (!mux->streamable && mux->duration != GST_CLOCK_TIME_NONE) {
805 d = gst_guint64_to_gdouble (mux->duration);
806 d /= (gdouble) GST_SECOND;
808 GST_DEBUG_OBJECT (mux, "determined the duration to be %f", d);
809 gst_buffer_map (script_tag, &map, GST_MAP_WRITE);
810 GST_WRITE_DOUBLE_BE (map.data + 29 + 2 + 8 + 1, d);
811 gst_buffer_unmap (script_tag, &map);
814 if (mux->have_video) {
815 GstPad *video_pad = NULL;
817 GSList *l = mux->collect->data;
819 for (; l; l = l->next) {
821 if (cpad && cpad->video) {
822 video_pad = cpad->collect.pad;
827 if (video_pad && gst_pad_has_current_caps (video_pad)) {
833 GST_DEBUG_OBJECT (mux, "putting videocodecid %d in the metadata",
836 tmp = gst_flv_mux_create_number_script_value ("videocodecid",
838 script_tag = gst_buffer_append (script_tag, tmp);
841 caps = gst_pad_get_current_caps (video_pad);
842 s = gst_caps_get_structure (caps, 0);
843 gst_caps_unref (caps);
845 if (gst_structure_get_int (s, "width", &size)) {
846 GST_DEBUG_OBJECT (mux, "putting width %d in the metadata", size);
848 tmp = gst_flv_mux_create_number_script_value ("width", size);
849 script_tag = gst_buffer_append (script_tag, tmp);
853 if (gst_structure_get_int (s, "height", &size)) {
854 GST_DEBUG_OBJECT (mux, "putting height %d in the metadata", size);
856 tmp = gst_flv_mux_create_number_script_value ("height", size);
857 script_tag = gst_buffer_append (script_tag, tmp);
861 if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &num, &den)) {
865 GST_DEBUG_OBJECT (mux, "putting AspectRatioX %f in the metadata", d);
867 tmp = gst_flv_mux_create_number_script_value ("AspectRatioX", d);
868 script_tag = gst_buffer_append (script_tag, tmp);
872 GST_DEBUG_OBJECT (mux, "putting AspectRatioY %f in the metadata", d);
874 tmp = gst_flv_mux_create_number_script_value ("AspectRatioY", d);
875 script_tag = gst_buffer_append (script_tag, tmp);
879 if (gst_structure_get_fraction (s, "framerate", &num, &den)) {
882 gst_util_fraction_to_double (num, den, &d);
883 GST_DEBUG_OBJECT (mux, "putting framerate %f in the metadata", d);
885 tmp = gst_flv_mux_create_number_script_value ("framerate", d);
886 script_tag = gst_buffer_append (script_tag, tmp);
892 if (mux->have_audio) {
893 GstPad *audio_pad = NULL;
895 GSList *l = mux->collect->data;
897 for (; l; l = l->next) {
899 if (cpad && !cpad->video) {
900 audio_pad = cpad->collect.pad;
906 GST_DEBUG_OBJECT (mux, "putting audiocodecid %d in the metadata",
909 tmp = gst_flv_mux_create_number_script_value ("audiocodecid",
911 script_tag = gst_buffer_append (script_tag, tmp);
917 const gchar *s = "GStreamer FLV muxer";
919 _gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s), &tmp, &data);
920 data[0] = 0; /* 15 bytes name */
922 memcpy (&data[2], "metadatacreator", 15);
923 data[17] = 2; /* string */
924 data[18] = (strlen (s) >> 8) & 0xff;
925 data[19] = (strlen (s)) & 0xff;
926 memcpy (&data[20], s, strlen (s));
927 script_tag = gst_buffer_append (script_tag, tmp);
933 GTimeVal tv = { 0, };
937 static const gchar *weekdays[] = {
938 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
940 static const gchar *months[] = {
941 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
942 "Aug", "Sep", "Oct", "Nov", "Dec"
945 g_get_current_time (&tv);
949 s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
950 months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
953 _gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s), &tmp, &data);
954 data[0] = 0; /* 12 bytes name */
956 memcpy (&data[2], "creationdate", 12);
957 data[14] = 2; /* string */
958 data[15] = (strlen (s) >> 8) & 0xff;
959 data[16] = (strlen (s)) & 0xff;
960 memcpy (&data[17], s, strlen (s));
961 script_tag = gst_buffer_append (script_tag, tmp);
970 gst_buffer_unref (script_tag);
975 _gst_buffer_new_and_alloc (2 + 0 + 1, &tmp, &data);
976 data[0] = 0; /* 0 byte size */
978 data[2] = 9; /* end marker */
979 script_tag = gst_buffer_append (script_tag, tmp);
982 _gst_buffer_new_and_alloc (4, &tmp, &data);
983 GST_WRITE_UINT32_BE (data, gst_buffer_get_size (script_tag));
984 script_tag = gst_buffer_append (script_tag, tmp);
986 gst_buffer_map (script_tag, &map, GST_MAP_WRITE);
987 map.data[1] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 16) & 0xff;
988 map.data[2] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 8) & 0xff;
989 map.data[3] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 0) & 0xff;
991 GST_WRITE_UINT32_BE (map.data + 11 + 13 + 1, tags_written);
992 gst_buffer_unmap (script_tag, &map);
999 gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
1000 GstFlvPad * cpad, gboolean is_codec_data)
1005 guint32 pts, dts, cts;
1006 guint8 *data, *bdata;
1009 if (GST_BUFFER_DTS_IS_VALID (buffer))
1010 dts = GST_BUFFER_DTS (buffer) / GST_MSECOND;
1012 dts = cpad->last_timestamp / GST_MSECOND;
1014 if (GST_BUFFER_PTS_IS_VALID (buffer))
1015 pts = GST_BUFFER_PTS (buffer) / GST_MSECOND;
1024 if (!GST_CLOCK_TIME_IS_VALID (cpad->first_timestamp))
1025 cpad->first_timestamp = dts;
1027 /* Timestamp must start at zero */
1028 dts -= cpad->first_timestamp;
1030 GST_LOG_OBJECT (mux, "got pts %i dts %i cts %i\n", pts, dts, cts);
1032 gst_buffer_map (buffer, &map, GST_MAP_READ);
1039 if (cpad->video_codec == 7)
1045 if (cpad->audio_codec == 10)
1052 _gst_buffer_new_and_alloc (size, &tag, &data);
1053 memset (data, 0, size);
1055 data[0] = (cpad->video) ? 9 : 8;
1057 data[1] = ((size - 11 - 4) >> 16) & 0xff;
1058 data[2] = ((size - 11 - 4) >> 8) & 0xff;
1059 data[3] = ((size - 11 - 4) >> 0) & 0xff;
1061 GST_WRITE_UINT24_BE (data + 4, dts);
1062 data[7] = (((guint) dts) >> 24) & 0xff;
1064 data[8] = data[9] = data[10] = 0;
1067 if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1072 data[11] |= cpad->video_codec & 0x0f;
1074 if (cpad->video_codec == 7) {
1075 if (is_codec_data) {
1077 GST_WRITE_UINT24_BE (data + 13, 0);
1081 GST_WRITE_UINT24_BE (data + 13, cts);
1083 memcpy (data + 11 + 1 + 4, bdata, bsize);
1085 memcpy (data + 11 + 1, bdata, bsize);
1088 data[11] |= (cpad->audio_codec << 4) & 0xf0;
1089 data[11] |= (cpad->rate << 2) & 0x0c;
1090 data[11] |= (cpad->width << 1) & 0x02;
1091 data[11] |= (cpad->channels << 0) & 0x01;
1093 if (cpad->audio_codec == 10) {
1094 data[12] = is_codec_data ? 0 : 1;
1096 memcpy (data + 11 + 1 + 1, bdata, bsize);
1098 memcpy (data + 11 + 1, bdata, bsize);
1102 gst_buffer_unmap (buffer, &map);
1104 GST_WRITE_UINT32_BE (data + size - 4, size - 4);
1106 GST_BUFFER_PTS (tag) = GST_CLOCK_TIME_NONE;
1107 GST_BUFFER_DTS (tag) = GST_CLOCK_TIME_NONE;
1108 GST_BUFFER_DURATION (tag) = GST_CLOCK_TIME_NONE;
1109 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET (buffer);
1110 GST_BUFFER_OFFSET_END (tag) = GST_BUFFER_OFFSET_END (buffer);
1112 /* mark the buffer if it's an audio buffer and there's also video being muxed
1113 * or it's a video interframe */
1114 if ((mux->have_video && !cpad->video) ||
1115 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1116 GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
1118 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
1119 GST_BUFFER_OFFSET_NONE;
1124 static inline GstBuffer *
1125 gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1128 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
1131 static inline GstBuffer *
1132 gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1135 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
1139 gst_flv_mux_put_buffer_in_streamheader (GValue * streamheader,
1142 GValue value = { 0 };
1145 g_value_init (&value, GST_TYPE_BUFFER);
1146 buf = gst_buffer_copy (buffer);
1147 gst_value_set_buffer (&value, buf);
1148 gst_buffer_unref (buf);
1149 gst_value_array_append_value (streamheader, &value);
1150 g_value_unset (&value);
1153 static GstFlowReturn
1154 gst_flv_mux_write_header (GstFlvMux * mux)
1156 GstBuffer *header, *metadata;
1157 GstBuffer *video_codec_data, *audio_codec_data;
1159 GstStructure *structure;
1160 GValue streamheader = { 0 };
1166 /* if not streaming, check if downstream is seekable */
1167 if (!mux->streamable) {
1171 query = gst_query_new_seeking (GST_FORMAT_BYTES);
1172 if (gst_pad_peer_query (mux->srcpad, query)) {
1173 gst_query_parse_seeking (query, NULL, &seekable, NULL, NULL);
1174 GST_INFO_OBJECT (mux, "downstream is %sseekable", seekable ? "" : "not ");
1176 /* have to assume seeking is supported if query not handled downstream */
1177 GST_WARNING_OBJECT (mux, "downstream did not handle seeking query");
1181 mux->streamable = TRUE;
1182 g_object_notify (G_OBJECT (mux), "streamable");
1183 GST_WARNING_OBJECT (mux, "downstream is not seekable, but "
1184 "streamable=false. Will ignore that and create streamable output "
1187 gst_query_unref (query);
1190 header = gst_flv_mux_create_header (mux);
1191 metadata = gst_flv_mux_create_metadata (mux, TRUE);
1192 video_codec_data = NULL;
1193 audio_codec_data = NULL;
1195 for (l = mux->collect->data; l != NULL; l = l->next) {
1196 GstFlvPad *cpad = l->data;
1198 /* Get H.264 and AAC codec data, if present */
1199 if (cpad && cpad->video && cpad->video_codec == 7) {
1200 if (cpad->video_codec_data == NULL)
1201 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1202 "output might not be playable");
1205 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1207 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1208 if (cpad->audio_codec_data == NULL)
1209 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1210 "output might not be playable");
1213 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1218 /* mark buffers that will go in the streamheader */
1219 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_HEADER);
1220 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_HEADER);
1221 if (video_codec_data != NULL) {
1222 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_HEADER);
1223 /* mark as a delta unit, so downstream will not try to synchronize on that
1224 * buffer - to actually start playback you need a real video keyframe */
1225 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1227 if (audio_codec_data != NULL) {
1228 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_HEADER);
1231 /* put buffers in streamheader */
1232 g_value_init (&streamheader, GST_TYPE_ARRAY);
1233 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1234 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1235 if (video_codec_data != NULL)
1236 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1237 if (audio_codec_data != NULL)
1238 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1240 /* stream-start (FIXME: create id based on input ids) */
1241 g_snprintf (s_id, sizeof (s_id), "flvmux-%08x", g_random_int ());
1242 gst_pad_push_event (mux->srcpad, gst_event_new_stream_start (s_id));
1244 /* create the caps and put the streamheader in them */
1245 caps = gst_caps_new_empty_simple ("video/x-flv");
1246 structure = gst_caps_get_structure (caps, 0);
1247 gst_structure_set_value (structure, "streamheader", &streamheader);
1248 g_value_unset (&streamheader);
1250 gst_pad_set_caps (mux->srcpad, caps);
1252 gst_caps_unref (caps);
1255 gst_segment_init (&segment, GST_FORMAT_BYTES);
1256 gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment));
1258 /* push the header buffer, the metadata and the codec info, if any */
1259 ret = gst_flv_mux_push (mux, header);
1260 if (ret != GST_FLOW_OK)
1262 ret = gst_flv_mux_push (mux, metadata);
1263 if (ret != GST_FLOW_OK)
1265 if (video_codec_data != NULL) {
1266 ret = gst_flv_mux_push (mux, video_codec_data);
1267 if (ret != GST_FLOW_OK)
1270 if (audio_codec_data != NULL) {
1271 ret = gst_flv_mux_push (mux, audio_codec_data);
1272 if (ret != GST_FLOW_OK)
1279 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1282 * Add the tag byte offset and to the index if it's a valid seek point, which
1283 * means it's either a video keyframe or if there is no video pad (in that
1284 * case every FLV tag is a valid seek point)
1286 if (mux->have_video &&
1288 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1291 if (GST_BUFFER_PTS_IS_VALID (buffer)) {
1292 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1293 entry->position = mux->byte_count;
1294 entry->time = gst_guint64_to_gdouble (GST_BUFFER_PTS (buffer)) / GST_SECOND;
1295 mux->index = g_list_prepend (mux->index, entry);
1299 static GstFlowReturn
1300 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad, GstBuffer * buffer)
1304 GstClockTime dts = GST_BUFFER_DTS (buffer);
1306 /* clipping function arranged for running_time */
1308 if (!mux->streamable)
1309 gst_flv_mux_update_index (mux, buffer, cpad);
1311 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1313 gst_buffer_unref (buffer);
1315 ret = gst_flv_mux_push (mux, tag);
1317 if (ret == GST_FLOW_OK && GST_CLOCK_TIME_IS_VALID (dts))
1318 cpad->last_timestamp = dts;
1325 gst_flv_mux_determine_duration (GstFlvMux * mux)
1328 GstClockTime duration = GST_CLOCK_TIME_NONE;
1330 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1331 "from pad timestamps");
1333 for (l = mux->collect->data; l != NULL; l = l->next) {
1334 GstFlvPad *cpad = l->data;
1336 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1337 if (duration == GST_CLOCK_TIME_NONE)
1338 duration = cpad->last_timestamp;
1340 duration = MAX (duration, cpad->last_timestamp);
1347 static GstFlowReturn
1348 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1350 GstBuffer *rewrite, *index, *tmp;
1355 guint32 index_len, allocate_size;
1356 guint32 i, index_skip;
1360 if (mux->streamable)
1363 /* seek back to the preallocated index space */
1364 gst_segment_init (&segment, GST_FORMAT_BYTES);
1365 segment.start = segment.time = 13 + 29;
1366 event = gst_event_new_segment (&segment);
1367 if (!gst_pad_push_event (mux->srcpad, event)) {
1368 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1372 /* determine duration now based on our own timestamping,
1373 * so that it is likely many times better and consistent
1374 * than whatever obtained by some query */
1375 dur = gst_flv_mux_determine_duration (mux);
1376 if (dur != GST_CLOCK_TIME_NONE)
1377 mux->duration = dur;
1379 /* rewrite the duration tag */
1380 d = gst_guint64_to_gdouble (mux->duration);
1381 d /= (gdouble) GST_SECOND;
1383 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1385 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1387 /* rewrite the filesize tag */
1388 d = gst_guint64_to_gdouble (mux->byte_count);
1390 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1392 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1393 rewrite = gst_buffer_append (rewrite, tmp);
1396 /* no index, so push buffer and return */
1397 return gst_flv_mux_push (mux, rewrite);
1400 /* rewrite the index */
1401 mux->index = g_list_reverse (mux->index);
1402 index_len = g_list_length (mux->index);
1404 /* We write at most MAX_INDEX_ENTRIES elements */
1405 if (index_len > MAX_INDEX_ENTRIES) {
1406 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1407 index_len = (index_len + index_skip - 1) / index_skip;
1412 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1413 /* see size calculation in gst_flv_mux_preallocate_index */
1414 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1415 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1416 _gst_buffer_new_and_alloc (allocate_size, &index, &data);
1418 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1419 memcpy (data + 2, "keyframes", 9);
1420 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1421 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1422 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1423 memcpy (data + 18, "times", 5);
1424 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1425 GST_WRITE_UINT32_BE (data + 24, index_len);
1428 /* the keyframes' times */
1429 for (i = 0, l = mux->index; l; l = l->next, i++) {
1430 GstFlvMuxIndexEntry *entry = l->data;
1432 if (i % index_skip != 0)
1434 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1435 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1439 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1440 memcpy (data + 2, "filepositions", 13);
1441 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1442 GST_WRITE_UINT32_BE (data + 16, index_len);
1445 /* the keyframes' file positions */
1446 for (i = 0, l = mux->index; l; l = l->next, i++) {
1447 GstFlvMuxIndexEntry *entry = l->data;
1449 if (i % index_skip != 0)
1451 GST_WRITE_UINT8 (data, 0);
1452 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1456 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1458 /* If there is space left in the prefilled area, reinsert the filler.
1459 There is at least 18 bytes free, so it will always fit. */
1460 if (index_len < MAX_INDEX_ENTRIES) {
1463 guint32 remaining_filler_size;
1465 _gst_buffer_new_and_alloc (14, &tmp, &data);
1466 GST_WRITE_UINT16_BE (data, 9);
1467 memcpy (data + 2, "gstfiller", 9);
1468 GST_WRITE_UINT8 (data + 11, 2); /* string */
1470 /* There is 18 bytes per remaining index entry minus what is used for
1471 * the'gstfiller' key. The rest is already filled with spaces, so just need
1472 * to update length. */
1473 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1474 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1475 remaining_filler_size);
1476 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1477 index = gst_buffer_append (index, tmp);
1480 rewrite = gst_buffer_append (rewrite, index);
1482 return gst_flv_mux_push (mux, rewrite);
1485 static GstFlowReturn
1486 gst_flv_mux_handle_buffer (GstCollectPads * pads, GstCollectData * cdata,
1487 GstBuffer * buffer, gpointer user_data)
1489 GstFlvMux *mux = GST_FLV_MUX (user_data);
1491 GstClockTime best_time;
1494 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1495 if (mux->collect->data == NULL) {
1496 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1497 ("No input streams configured"));
1498 return GST_FLOW_ERROR;
1501 ret = gst_flv_mux_write_header (mux);
1502 if (ret != GST_FLOW_OK)
1504 mux->state = GST_FLV_MUX_STATE_DATA;
1507 if (mux->new_tags) {
1508 GstBuffer *buf = gst_flv_mux_create_metadata (mux, FALSE);
1510 gst_flv_mux_push (mux, buf);
1511 mux->new_tags = FALSE;
1514 best = (GstFlvPad *) cdata;
1517 best_time = GST_BUFFER_DTS (buffer);
1519 best_time = GST_CLOCK_TIME_NONE;
1522 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1523 bigger timestamp is seen, for live the timestamp will get wrapped in
1524 gst_flv_mux_buffer_to_tag */
1525 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1526 && best_time / GST_MSECOND > G_MAXINT32) {
1527 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1528 gst_buffer_unref (buffer);
1534 return gst_flv_mux_write_buffer (mux, best, buffer);
1536 gst_flv_mux_rewrite_header (mux);
1537 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1538 return GST_FLOW_EOS;
1543 gst_flv_mux_get_property (GObject * object,
1544 guint prop_id, GValue * value, GParamSpec * pspec)
1546 GstFlvMux *mux = GST_FLV_MUX (object);
1549 case PROP_STREAMABLE:
1550 g_value_set_boolean (value, mux->streamable);
1553 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1559 gst_flv_mux_set_property (GObject * object,
1560 guint prop_id, const GValue * value, GParamSpec * pspec)
1562 GstFlvMux *mux = GST_FLV_MUX (object);
1565 case PROP_STREAMABLE:
1566 mux->streamable = g_value_get_boolean (value);
1567 if (mux->streamable)
1568 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1569 GST_TAG_MERGE_REPLACE);
1571 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1572 GST_TAG_MERGE_KEEP);
1575 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1580 static GstStateChangeReturn
1581 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1583 GstStateChangeReturn ret;
1584 GstFlvMux *mux = GST_FLV_MUX (element);
1586 switch (transition) {
1587 case GST_STATE_CHANGE_NULL_TO_READY:
1589 case GST_STATE_CHANGE_READY_TO_PAUSED:
1590 gst_collect_pads_start (mux->collect);
1592 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1594 case GST_STATE_CHANGE_PAUSED_TO_READY:
1595 gst_collect_pads_stop (mux->collect);
1601 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1603 switch (transition) {
1604 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1606 case GST_STATE_CHANGE_PAUSED_TO_READY:
1607 gst_flv_mux_reset (GST_ELEMENT (mux));
1609 case GST_STATE_CHANGE_READY_TO_NULL: