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"
44 GST_DEBUG_CATEGORY_STATIC (flvmux_debug);
45 #define GST_CAT_DEFAULT flvmux_debug
53 #define DEFAULT_STREAMABLE FALSE
54 #define MAX_INDEX_ENTRIES 128
56 static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
59 GST_STATIC_CAPS ("video/x-flv")
62 static GstStaticPadTemplate videosink_templ = GST_STATIC_PAD_TEMPLATE ("video",
65 GST_STATIC_CAPS ("video/x-flash-video; "
66 "video/x-flash-screen; "
67 "video/x-vp6-flash; " "video/x-vp6-alpha; "
68 "video/x-h264, stream-format=avc;")
71 static GstStaticPadTemplate audiosink_templ = GST_STATIC_PAD_TEMPLATE ("audio",
75 ("audio/x-adpcm, layout = (string) swf, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
76 "audio/mpeg, mpegversion = (int) 1, layer = (int) 3, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 22050, 44100 }, parsed = (boolean) TRUE; "
77 "audio/mpeg, mpegversion = (int) { 2, 4 }, framed = (boolean) TRUE; "
78 "audio/x-nellymoser, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 16000, 22050, 44100 }; "
79 "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; "
80 "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; "
81 "audio/x-alaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
82 "audio/x-mulaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
83 "audio/x-speex, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 };")
86 #define gst_flv_mux_parent_class parent_class
87 G_DEFINE_TYPE_WITH_CODE (GstFlvMux, gst_flv_mux, GST_TYPE_ELEMENT,
88 G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL));
90 static void gst_flv_mux_finalize (GObject * object);
92 gst_flv_mux_handle_buffer (GstCollectPads2 * pads, GstCollectData2 * cdata,
93 GstBuffer * buf, gpointer user_data);
95 gst_flv_mux_handle_sink_event (GstCollectPads2 * pads, GstCollectData2 * data,
96 GstEvent * event, gpointer user_data);
98 static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
100 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
101 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps);
102 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
104 static gboolean gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps);
105 static gboolean gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps);
107 static void gst_flv_mux_get_property (GObject * object,
108 guint prop_id, GValue * value, GParamSpec * pspec);
109 static void gst_flv_mux_set_property (GObject * object,
110 guint prop_id, const GValue * value, GParamSpec * pspec);
112 static GstStateChangeReturn
113 gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
115 static void gst_flv_mux_reset (GstElement * element);
116 static void gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * pad,
123 } GstFlvMuxIndexEntry;
126 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
128 g_slice_free (GstFlvMuxIndexEntry, entry);
132 _gst_buffer_new_wrapped (gpointer mem, gsize size, GFreeFunc free_func)
136 buf = gst_buffer_new ();
137 gst_buffer_take_memory (buf, -1,
138 gst_memory_new_wrapped (free_func ? 0 : GST_MEMORY_FLAG_READONLY,
139 mem, free_func, size, 0, size));
145 _gst_buffer_new_and_alloc (gsize size, GstBuffer ** buffer, guint8 ** data)
147 g_return_if_fail (data != NULL);
148 g_return_if_fail (buffer != NULL);
150 *data = g_malloc (size);
151 *buffer = _gst_buffer_new_wrapped (*data, size, g_free);
155 gst_flv_mux_class_init (GstFlvMuxClass * klass)
157 GObjectClass *gobject_class;
158 GstElementClass *gstelement_class;
160 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
162 gobject_class = (GObjectClass *) klass;
163 gstelement_class = (GstElementClass *) klass;
165 gobject_class->get_property = gst_flv_mux_get_property;
166 gobject_class->set_property = gst_flv_mux_set_property;
167 gobject_class->finalize = gst_flv_mux_finalize;
169 /* FIXME: ideally the right mode of operation should be detected
170 * automatically using queries when parameter not specified. */
172 * GstFlvMux:streamable
174 * If True, the output will be streaming friendly. (ie without indexes and
179 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
180 g_param_spec_boolean ("streamable", "streamable",
181 "If set to true, the output should be as if it is to be streamed "
182 "and hence no indexes written or duration written.",
183 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
185 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
186 gstelement_class->request_new_pad =
187 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
188 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
190 gst_element_class_add_pad_template (gstelement_class,
191 gst_static_pad_template_get (&videosink_templ));
192 gst_element_class_add_pad_template (gstelement_class,
193 gst_static_pad_template_get (&audiosink_templ));
194 gst_element_class_add_pad_template (gstelement_class,
195 gst_static_pad_template_get (&src_templ));
196 gst_element_class_set_details_simple (gstelement_class, "FLV muxer",
198 "Muxes video/audio streams into a FLV stream",
199 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
201 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
205 gst_flv_mux_init (GstFlvMux * mux)
207 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
208 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
209 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
212 mux->streamable = DEFAULT_STREAMABLE;
214 mux->new_tags = FALSE;
216 mux->collect = gst_collect_pads2_new ();
217 gst_collect_pads2_set_buffer_function (mux->collect,
218 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_buffer), mux);
219 gst_collect_pads2_set_event_function (mux->collect,
220 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event), mux);
221 gst_collect_pads2_set_clip_function (mux->collect,
222 GST_DEBUG_FUNCPTR (gst_collect_pads2_clip_running_time), mux);
224 gst_flv_mux_reset (GST_ELEMENT (mux));
228 gst_flv_mux_finalize (GObject * object)
230 GstFlvMux *mux = GST_FLV_MUX (object);
232 gst_object_unref (mux->collect);
234 G_OBJECT_CLASS (parent_class)->finalize (object);
238 gst_flv_mux_reset (GstElement * element)
240 GstFlvMux *mux = GST_FLV_MUX (element);
243 for (sl = mux->collect->data; sl != NULL; sl = g_slist_next (sl)) {
244 GstFlvPad *cpad = (GstFlvPad *) sl->data;
246 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
249 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
250 g_list_free (mux->index);
254 mux->have_audio = mux->have_video = FALSE;
255 mux->duration = GST_CLOCK_TIME_NONE;
256 mux->new_tags = FALSE;
258 mux->state = GST_FLV_MUX_STATE_HEADER;
261 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
265 gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
270 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
274 /* disable seeking for now */
280 return gst_pad_event_default (pad, parent, event);
284 gst_flv_mux_handle_sink_event (GstCollectPads2 * pads, GstCollectData2 * data,
285 GstEvent * event, gpointer user_data)
287 GstFlvMux *mux = GST_FLV_MUX (user_data);
288 gboolean ret = FALSE;
290 switch (GST_EVENT_TYPE (event)) {
296 gst_event_parse_caps (event, &caps);
298 /* find stream data */
299 flvpad = (GstFlvPad *) data;
303 ret = gst_flv_mux_video_pad_setcaps (data->pad, caps);
305 ret = gst_flv_mux_audio_pad_setcaps (data->pad, caps);
309 gst_event_unref (event);
314 GstTagSetter *setter = GST_TAG_SETTER (mux);
315 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
317 gst_event_parse_tag (event, &list);
318 gst_tag_setter_merge_tags (setter, list, mode);
319 mux->new_tags = TRUE;
326 /* now GstCollectPads2 can take care of the rest, e.g. EOS */
331 gst_flv_mux_video_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), "video/x-flash-video") == 0) {
341 cpad->video_codec = 2;
342 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
343 cpad->video_codec = 3;
344 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
345 cpad->video_codec = 4;
346 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
347 cpad->video_codec = 5;
348 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
349 cpad->video_codec = 7;
354 if (ret && gst_structure_has_field (s, "codec_data")) {
355 const GValue *val = gst_structure_get_value (s, "codec_data");
358 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
361 gst_object_unref (mux);
367 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
369 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
370 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
374 s = gst_caps_get_structure (caps, 0);
376 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
377 const gchar *layout = gst_structure_get_string (s, "layout");
378 if (layout && strcmp (layout, "swf") == 0) {
379 cpad->audio_codec = 1;
383 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
386 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
387 if (mpegversion == 1) {
390 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
393 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
394 cpad->audio_codec = 14;
396 cpad->audio_codec = 2;
400 } else if (mpegversion == 4 || mpegversion == 2) {
401 cpad->audio_codec = 10;
408 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
411 if (gst_structure_get_int (s, "rate", &rate)
412 && gst_structure_get_int (s, "channels", &channels)) {
413 if (channels == 1 && rate == 16000)
414 cpad->audio_codec = 4;
415 else if (channels == 1 && rate == 8000)
416 cpad->audio_codec = 5;
418 cpad->audio_codec = 6;
420 cpad->audio_codec = 6;
422 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw-int") == 0) {
425 if (gst_structure_get_int (s, "endianness", &endianness)
426 && endianness == G_LITTLE_ENDIAN)
427 cpad->audio_codec = 3;
430 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
431 cpad->audio_codec = 7;
432 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
433 cpad->audio_codec = 8;
434 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
435 cpad->audio_codec = 11;
441 gint rate, channels, width;
443 if (gst_structure_get_int (s, "rate", &rate)) {
444 if (cpad->audio_codec == 10)
446 else if (rate == 5512)
448 else if (rate == 11025)
450 else if (rate == 22050)
452 else if (rate == 44100)
454 else if (rate == 8000 && (cpad->audio_codec == 5
455 || cpad->audio_codec == 14))
457 else if (rate == 16000 && cpad->audio_codec == 4)
461 } else if (cpad->audio_codec == 10) {
467 if (gst_structure_get_int (s, "channels", &channels)) {
468 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
469 || cpad->audio_codec == 6)
471 else if (cpad->audio_codec == 10)
473 else if (channels == 1)
475 else if (channels == 2)
479 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
480 || cpad->audio_codec == 6) {
482 } else if (cpad->audio_codec == 10) {
488 if (gst_structure_get_int (s, "width", &width)) {
489 if (cpad->audio_codec != 3)
493 else if (width == 16)
497 } else if (cpad->audio_codec != 3) {
504 if (ret && gst_structure_has_field (s, "codec_data")) {
505 const GValue *val = gst_structure_get_value (s, "codec_data");
508 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
511 gst_object_unref (mux);
517 gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * cpad, gboolean video)
521 if (cpad->audio_codec_data)
522 gst_buffer_unref (cpad->audio_codec_data);
523 cpad->audio_codec_data = NULL;
524 cpad->audio_codec = G_MAXUINT;
525 cpad->rate = G_MAXUINT;
526 cpad->width = G_MAXUINT;
527 cpad->channels = G_MAXUINT;
529 if (cpad->video_codec_data)
530 gst_buffer_unref (cpad->video_codec_data);
531 cpad->video_codec_data = NULL;
532 cpad->video_codec = G_MAXUINT;
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);
575 gst_collect_pads2_add_pad (mux->collect, pad, sizeof (GstFlvPad));
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_pads2_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_join (script_tag, tmp);
714 n_tags = (tags) ? gst_structure_n_fields ((GstStructure *) 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_join (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_join (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_join (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_join (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 =
746 gst_structure_nth_field_name ((const GstStructure *) 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_join (script_tag, tmp);
785 if (mux->duration == GST_CLOCK_TIME_NONE) {
789 for (l = mux->collect->data; l; l = l->next) {
790 GstCollectData2 *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_join (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_join (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_join (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_join (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_join (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_join (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_join (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_join (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_join (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_join (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_join (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 header = gst_flv_mux_create_header (mux);
1146 metadata = gst_flv_mux_create_metadata (mux, TRUE);
1147 video_codec_data = NULL;
1148 audio_codec_data = NULL;
1150 for (l = mux->collect->data; l != NULL; l = l->next) {
1151 GstFlvPad *cpad = l->data;
1153 /* Get H.264 and AAC codec data, if present */
1154 if (cpad && cpad->video && cpad->video_codec == 7) {
1155 if (cpad->video_codec_data == NULL)
1156 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1157 "output might not be playable");
1160 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1162 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1163 if (cpad->audio_codec_data == NULL)
1164 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1165 "output might not be playable");
1168 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1173 /* mark buffers that will go in the streamheader */
1174 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_IN_CAPS);
1175 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_IN_CAPS);
1176 if (video_codec_data != NULL) {
1177 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1178 /* mark as a delta unit, so downstream will not try to synchronize on that
1179 * buffer - to actually start playback you need a real video keyframe */
1180 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1182 if (audio_codec_data != NULL) {
1183 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1186 /* put buffers in streamheader */
1187 g_value_init (&streamheader, GST_TYPE_ARRAY);
1188 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1189 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1190 if (video_codec_data != NULL)
1191 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1192 if (audio_codec_data != NULL)
1193 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1195 /* create the caps and put the streamheader in them */
1196 caps = gst_caps_new_empty_simple ("video/x-flv");
1197 structure = gst_caps_get_structure (caps, 0);
1198 gst_structure_set_value (structure, "streamheader", &streamheader);
1199 g_value_unset (&streamheader);
1201 if (!gst_pad_has_current_caps (mux->srcpad))
1202 gst_pad_set_caps (mux->srcpad, caps);
1204 gst_caps_unref (caps);
1206 /* push the header buffer, the metadata and the codec info, if any */
1207 ret = gst_flv_mux_push (mux, header);
1208 if (ret != GST_FLOW_OK)
1210 ret = gst_flv_mux_push (mux, metadata);
1211 if (ret != GST_FLOW_OK)
1213 if (video_codec_data != NULL) {
1214 ret = gst_flv_mux_push (mux, video_codec_data);
1215 if (ret != GST_FLOW_OK)
1218 if (audio_codec_data != NULL) {
1219 ret = gst_flv_mux_push (mux, audio_codec_data);
1220 if (ret != GST_FLOW_OK)
1227 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1230 * Add the tag byte offset and to the index if it's a valid seek point, which
1231 * means it's either a video keyframe or if there is no video pad (in that
1232 * case every FLV tag is a valid seek point)
1234 if (mux->have_video &&
1236 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1239 if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
1240 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1241 entry->position = mux->byte_count;
1243 gst_guint64_to_gdouble (GST_BUFFER_TIMESTAMP (buffer)) / GST_SECOND;
1244 mux->index = g_list_prepend (mux->index, entry);
1248 static GstFlowReturn
1249 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad, GstBuffer * buffer)
1254 /* clipping function arranged for running_time */
1256 if (!mux->streamable)
1257 gst_flv_mux_update_index (mux, buffer, cpad);
1259 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1261 gst_buffer_unref (buffer);
1263 ret = gst_flv_mux_push (mux, tag);
1265 if (ret == GST_FLOW_OK && GST_BUFFER_TIMESTAMP_IS_VALID (tag))
1266 cpad->last_timestamp = GST_BUFFER_TIMESTAMP (tag);
1272 gst_flv_mux_determine_duration (GstFlvMux * mux)
1275 GstClockTime duration = GST_CLOCK_TIME_NONE;
1277 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1278 "from pad timestamps");
1280 for (l = mux->collect->data; l != NULL; l = l->next) {
1281 GstFlvPad *cpad = l->data;
1283 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1284 if (duration == GST_CLOCK_TIME_NONE)
1285 duration = cpad->last_timestamp;
1287 duration = MAX (duration, cpad->last_timestamp);
1294 static GstFlowReturn
1295 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1297 GstBuffer *rewrite, *index, *tmp;
1302 guint32 index_len, allocate_size;
1303 guint32 i, index_skip;
1307 if (mux->streamable)
1310 /* seek back to the preallocated index space */
1311 gst_segment_init (&segment, GST_FORMAT_BYTES);
1312 segment.start = segment.time = 13 + 29;
1313 event = gst_event_new_segment (&segment);
1314 if (!gst_pad_push_event (mux->srcpad, event)) {
1315 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1319 /* determine duration now based on our own timestamping,
1320 * so that it is likely many times better and consistent
1321 * than whatever obtained by some query */
1322 dur = gst_flv_mux_determine_duration (mux);
1323 if (dur != GST_CLOCK_TIME_NONE)
1324 mux->duration = dur;
1326 /* rewrite the duration tag */
1327 d = gst_guint64_to_gdouble (mux->duration);
1328 d /= (gdouble) GST_SECOND;
1330 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1332 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1334 /* rewrite the filesize tag */
1335 d = gst_guint64_to_gdouble (mux->byte_count);
1337 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1339 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1340 rewrite = gst_buffer_join (rewrite, tmp);
1343 /* no index, so push buffer and return */
1344 return gst_flv_mux_push (mux, rewrite);
1347 /* rewrite the index */
1348 mux->index = g_list_reverse (mux->index);
1349 index_len = g_list_length (mux->index);
1351 /* We write at most MAX_INDEX_ENTRIES elements */
1352 if (index_len > MAX_INDEX_ENTRIES) {
1353 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1354 index_len = (index_len + index_skip - 1) / index_skip;
1359 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1360 /* see size calculation in gst_flv_mux_preallocate_index */
1361 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1362 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1363 _gst_buffer_new_and_alloc (allocate_size, &index, &data);
1365 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1366 memcpy (data + 2, "keyframes", 9);
1367 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1368 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1369 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1370 memcpy (data + 18, "times", 5);
1371 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1372 GST_WRITE_UINT32_BE (data + 24, index_len);
1375 /* the keyframes' times */
1376 for (i = 0, l = mux->index; l; l = l->next, i++) {
1377 GstFlvMuxIndexEntry *entry = l->data;
1379 if (i % index_skip != 0)
1381 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1382 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1386 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1387 memcpy (data + 2, "filepositions", 13);
1388 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1389 GST_WRITE_UINT32_BE (data + 16, index_len);
1392 /* the keyframes' file positions */
1393 for (i = 0, l = mux->index; l; l = l->next, i++) {
1394 GstFlvMuxIndexEntry *entry = l->data;
1396 if (i % index_skip != 0)
1398 GST_WRITE_UINT8 (data, 0);
1399 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1403 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1405 /* If there is space left in the prefilled area, reinsert the filler.
1406 There is at least 18 bytes free, so it will always fit. */
1407 if (index_len < MAX_INDEX_ENTRIES) {
1410 guint32 remaining_filler_size;
1412 _gst_buffer_new_and_alloc (14, &tmp, &data);
1413 GST_WRITE_UINT16_BE (data, 9);
1414 memcpy (data + 2, "gstfiller", 9);
1415 GST_WRITE_UINT8 (data + 11, 2); /* string */
1417 /* There is 18 bytes per remaining index entry minus what is used for
1418 * the'gstfiller' key. The rest is already filled with spaces, so just need
1419 * to update length. */
1420 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1421 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1422 remaining_filler_size);
1423 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1424 index = gst_buffer_join (index, tmp);
1427 rewrite = gst_buffer_join (rewrite, index);
1429 return gst_flv_mux_push (mux, rewrite);
1432 static GstFlowReturn
1433 gst_flv_mux_handle_buffer (GstCollectPads2 * pads, GstCollectData2 * cdata,
1434 GstBuffer * buffer, gpointer user_data)
1436 GstFlvMux *mux = GST_FLV_MUX (user_data);
1438 GstClockTime best_time;
1441 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1444 if (mux->collect->data == NULL) {
1445 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1446 ("No input streams configured"));
1447 return GST_FLOW_ERROR;
1450 gst_segment_init (&segment, GST_FORMAT_BYTES);
1451 if (gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment)))
1452 ret = gst_flv_mux_write_header (mux);
1454 ret = GST_FLOW_ERROR;
1456 if (ret != GST_FLOW_OK)
1458 mux->state = GST_FLV_MUX_STATE_DATA;
1461 if (mux->new_tags) {
1462 GstBuffer *buf = gst_flv_mux_create_metadata (mux, FALSE);
1464 gst_flv_mux_push (mux, buf);
1465 mux->new_tags = FALSE;
1468 best = (GstFlvPad *) cdata;
1471 best_time = GST_BUFFER_TIMESTAMP (buffer);
1473 best_time = GST_CLOCK_TIME_NONE;
1476 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1477 bigger timestamp is seen, for live the timestamp will get wrapped in
1478 gst_flv_mux_buffer_to_tag */
1479 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1480 && best_time / GST_MSECOND > G_MAXINT32) {
1481 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1482 gst_buffer_unref (buffer);
1488 return gst_flv_mux_write_buffer (mux, best, buffer);
1490 gst_flv_mux_rewrite_header (mux);
1491 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1492 return GST_FLOW_EOS;
1497 gst_flv_mux_get_property (GObject * object,
1498 guint prop_id, GValue * value, GParamSpec * pspec)
1500 GstFlvMux *mux = GST_FLV_MUX (object);
1503 case PROP_STREAMABLE:
1504 g_value_set_boolean (value, mux->streamable);
1507 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1513 gst_flv_mux_set_property (GObject * object,
1514 guint prop_id, const GValue * value, GParamSpec * pspec)
1516 GstFlvMux *mux = GST_FLV_MUX (object);
1519 case PROP_STREAMABLE:
1520 mux->streamable = g_value_get_boolean (value);
1521 if (mux->streamable)
1522 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1523 GST_TAG_MERGE_REPLACE);
1525 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1526 GST_TAG_MERGE_KEEP);
1529 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1534 static GstStateChangeReturn
1535 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1537 GstStateChangeReturn ret;
1538 GstFlvMux *mux = GST_FLV_MUX (element);
1540 switch (transition) {
1541 case GST_STATE_CHANGE_NULL_TO_READY:
1543 case GST_STATE_CHANGE_READY_TO_PAUSED:
1544 gst_collect_pads2_start (mux->collect);
1546 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1548 case GST_STATE_CHANGE_PAUSED_TO_READY:
1549 gst_collect_pads2_stop (mux->collect);
1555 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1557 switch (transition) {
1558 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1560 case GST_STATE_CHANGE_PAUSED_TO_READY:
1561 gst_flv_mux_reset (GST_ELEMENT (mux));
1563 case GST_STATE_CHANGE_READY_TO_NULL: