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_collected (GstCollectPads * pads, gpointer user_data);
94 static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event);
95 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
96 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps);
97 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
99 static gboolean gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps);
100 static gboolean gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps);
102 static void gst_flv_mux_get_property (GObject * object,
103 guint prop_id, GValue * value, GParamSpec * pspec);
104 static void gst_flv_mux_set_property (GObject * object,
105 guint prop_id, const GValue * value, GParamSpec * pspec);
107 static GstStateChangeReturn
108 gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
110 static void gst_flv_mux_reset (GstElement * element);
111 static void gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * pad,
118 } GstFlvMuxIndexEntry;
121 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
123 g_slice_free (GstFlvMuxIndexEntry, entry);
127 _gst_buffer_new_wrapped (gpointer mem, gsize size, GFreeFunc free_func)
131 buf = gst_buffer_new ();
132 gst_buffer_take_memory (buf, -1,
133 gst_memory_new_wrapped (free_func ? 0 : GST_MEMORY_FLAG_READONLY,
134 mem, free_func, size, 0, size));
140 _gst_buffer_new_and_alloc (gsize size, GstBuffer ** buffer, guint8 ** data)
142 g_return_if_fail (data != NULL);
143 g_return_if_fail (buffer != NULL);
145 *data = g_malloc (size);
146 *buffer = _gst_buffer_new_wrapped (*data, size, g_free);
150 gst_flv_mux_class_init (GstFlvMuxClass * klass)
152 GObjectClass *gobject_class;
153 GstElementClass *gstelement_class;
155 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
157 gobject_class = (GObjectClass *) klass;
158 gstelement_class = (GstElementClass *) klass;
160 gobject_class->get_property = gst_flv_mux_get_property;
161 gobject_class->set_property = gst_flv_mux_set_property;
162 gobject_class->finalize = gst_flv_mux_finalize;
164 /* FIXME: ideally the right mode of operation should be detected
165 * automatically using queries when parameter not specified. */
167 * GstFlvMux:streamable
169 * If True, the output will be streaming friendly. (ie without indexes and
174 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
175 g_param_spec_boolean ("streamable", "streamable",
176 "If set to true, the output should be as if it is to be streamed "
177 "and hence no indexes written or duration written.",
178 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
180 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
181 gstelement_class->request_new_pad =
182 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
183 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
185 gst_element_class_add_pad_template (gstelement_class,
186 gst_static_pad_template_get (&videosink_templ));
187 gst_element_class_add_pad_template (gstelement_class,
188 gst_static_pad_template_get (&audiosink_templ));
189 gst_element_class_add_pad_template (gstelement_class,
190 gst_static_pad_template_get (&src_templ));
191 gst_element_class_set_details_simple (gstelement_class, "FLV muxer",
193 "Muxes video/audio streams into a FLV stream",
194 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
196 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
200 gst_flv_mux_init (GstFlvMux * mux)
202 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
203 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
204 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
207 mux->streamable = DEFAULT_STREAMABLE;
209 mux->new_tags = FALSE;
211 mux->collect = gst_collect_pads_new ();
212 gst_collect_pads_set_function (mux->collect,
213 (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_flv_mux_collected), mux);
215 gst_flv_mux_reset (GST_ELEMENT (mux));
219 gst_flv_mux_finalize (GObject * object)
221 GstFlvMux *mux = GST_FLV_MUX (object);
223 gst_object_unref (mux->collect);
225 G_OBJECT_CLASS (parent_class)->finalize (object);
229 gst_flv_mux_reset (GstElement * element)
231 GstFlvMux *mux = GST_FLV_MUX (element);
234 for (sl = mux->collect->data; sl != NULL; sl = g_slist_next (sl)) {
235 GstFlvPad *cpad = (GstFlvPad *) sl->data;
237 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
240 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
241 g_list_free (mux->index);
245 mux->have_audio = mux->have_video = FALSE;
246 mux->duration = GST_CLOCK_TIME_NONE;
247 mux->new_tags = FALSE;
249 mux->state = GST_FLV_MUX_STATE_HEADER;
252 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
256 gst_flv_mux_handle_src_event (GstPad * pad, GstEvent * event)
260 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
264 /* disable seeking for now */
270 return gst_pad_event_default (pad, event);
274 gst_flv_mux_handle_sink_event (GstPad * pad, GstEvent * event)
276 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
279 switch (GST_EVENT_TYPE (event)) {
285 gst_event_parse_caps (event, &caps);
287 /* find stream data */
288 flvpad = (GstFlvPad *) gst_pad_get_element_private (pad);
292 ret = gst_flv_mux_video_pad_setcaps (pad, caps);
294 ret = gst_flv_mux_audio_pad_setcaps (pad, caps);
298 gst_event_unref (event);
303 GstTagSetter *setter = GST_TAG_SETTER (mux);
304 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
306 gst_event_parse_tag (event, &list);
307 gst_tag_setter_merge_tags (setter, list, mode);
308 mux->new_tags = TRUE;
315 /* now GstCollectPads can take care of the rest, e.g. EOS */
317 ret = mux->collect_event (pad, event);
318 gst_object_unref (mux);
324 gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
326 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
327 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
331 s = gst_caps_get_structure (caps, 0);
333 if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
334 cpad->video_codec = 2;
335 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
336 cpad->video_codec = 3;
337 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
338 cpad->video_codec = 4;
339 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
340 cpad->video_codec = 5;
341 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
342 cpad->video_codec = 7;
347 if (ret && gst_structure_has_field (s, "codec_data")) {
348 const GValue *val = gst_structure_get_value (s, "codec_data");
351 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
354 gst_object_unref (mux);
360 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
362 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
363 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
367 s = gst_caps_get_structure (caps, 0);
369 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
370 const gchar *layout = gst_structure_get_string (s, "layout");
371 if (layout && strcmp (layout, "swf") == 0) {
372 cpad->audio_codec = 1;
376 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
379 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
380 if (mpegversion == 1) {
383 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
386 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
387 cpad->audio_codec = 14;
389 cpad->audio_codec = 2;
393 } else if (mpegversion == 4 || mpegversion == 2) {
394 cpad->audio_codec = 10;
401 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
404 if (gst_structure_get_int (s, "rate", &rate)
405 && gst_structure_get_int (s, "channels", &channels)) {
406 if (channels == 1 && rate == 16000)
407 cpad->audio_codec = 4;
408 else if (channels == 1 && rate == 8000)
409 cpad->audio_codec = 5;
411 cpad->audio_codec = 6;
413 cpad->audio_codec = 6;
415 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw-int") == 0) {
418 if (gst_structure_get_int (s, "endianness", &endianness)
419 && endianness == G_LITTLE_ENDIAN)
420 cpad->audio_codec = 3;
423 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
424 cpad->audio_codec = 7;
425 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
426 cpad->audio_codec = 8;
427 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
428 cpad->audio_codec = 11;
434 gint rate, channels, width;
436 if (gst_structure_get_int (s, "rate", &rate)) {
437 if (cpad->audio_codec == 10)
439 else if (rate == 5512)
441 else if (rate == 11025)
443 else if (rate == 22050)
445 else if (rate == 44100)
447 else if (rate == 8000 && (cpad->audio_codec == 5
448 || cpad->audio_codec == 14))
450 else if (rate == 16000 && cpad->audio_codec == 4)
454 } else if (cpad->audio_codec == 10) {
460 if (gst_structure_get_int (s, "channels", &channels)) {
461 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
462 || cpad->audio_codec == 6)
464 else if (cpad->audio_codec == 10)
466 else if (channels == 1)
468 else if (channels == 2)
472 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
473 || cpad->audio_codec == 6) {
475 } else if (cpad->audio_codec == 10) {
481 if (gst_structure_get_int (s, "width", &width)) {
482 if (cpad->audio_codec != 3)
486 else if (width == 16)
490 } else if (cpad->audio_codec != 3) {
497 if (ret && gst_structure_has_field (s, "codec_data")) {
498 const GValue *val = gst_structure_get_value (s, "codec_data");
501 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
504 gst_object_unref (mux);
510 gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * cpad, gboolean video)
514 if (cpad->audio_codec_data)
515 gst_buffer_unref (cpad->audio_codec_data);
516 cpad->audio_codec_data = NULL;
517 cpad->audio_codec = G_MAXUINT;
518 cpad->rate = G_MAXUINT;
519 cpad->width = G_MAXUINT;
520 cpad->channels = G_MAXUINT;
522 if (cpad->video_codec_data)
523 gst_buffer_unref (cpad->video_codec_data);
524 cpad->video_codec_data = NULL;
525 cpad->video_codec = G_MAXUINT;
526 cpad->last_timestamp = 0;
530 gst_flv_mux_request_new_pad (GstElement * element,
531 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
533 GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
534 GstFlvMux *mux = GST_FLV_MUX (element);
537 const gchar *name = NULL;
540 if (mux->state != GST_FLV_MUX_STATE_HEADER) {
541 GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
545 if (templ == gst_element_class_get_pad_template (klass, "audio")) {
546 if (mux->have_audio) {
547 GST_WARNING_OBJECT (mux, "Already have an audio pad");
550 mux->have_audio = TRUE;
553 } else if (templ == gst_element_class_get_pad_template (klass, "video")) {
554 if (mux->have_video) {
555 GST_WARNING_OBJECT (mux, "Already have a video pad");
558 mux->have_video = TRUE;
562 GST_WARNING_OBJECT (mux, "Invalid template");
566 pad = gst_pad_new_from_template (templ, name);
568 gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstFlvPad));
570 cpad->audio_codec_data = NULL;
571 cpad->video_codec_data = NULL;
572 gst_flv_mux_reset_pad (mux, cpad, video);
574 /* FIXME: hacked way to override/extend the event function of
575 * GstCollectPads; because it sets its own event function giving the
576 * element no access to events.
578 mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (pad);
579 gst_pad_set_event_function (pad,
580 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event));
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)
680 const GstTagList *tags;
681 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);
720 /* Some players expect the 'duration' to be always set. Fill it out later,
721 after querying the pads or after getting EOS */
722 if (!mux->streamable) {
723 tmp = gst_flv_mux_create_number_script_value ("duration", 86400);
724 script_tag = gst_buffer_join (script_tag, tmp);
727 /* Sometimes the information about the total file size is useful for the
728 player. It will be filled later, after getting EOS */
729 tmp = gst_flv_mux_create_number_script_value ("filesize", 0);
730 script_tag = gst_buffer_join (script_tag, tmp);
733 /* Preallocate space for the index to be written at EOS */
734 tmp = gst_flv_mux_preallocate_index (mux);
735 script_tag = gst_buffer_join (script_tag, tmp);
737 GST_DEBUG_OBJECT (mux, "not preallocating index, streamable mode");
740 for (i = 0; tags && i < n_tags; i++) {
741 const gchar *tag_name =
742 gst_structure_nth_field_name ((const GstStructure *) tags, i);
743 if (!strcmp (tag_name, GST_TAG_DURATION)) {
746 if (!gst_tag_list_get_uint64 (tags, GST_TAG_DURATION, &dur))
749 } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
750 !strcmp (tag_name, GST_TAG_TITLE)) {
752 const gchar *t = NULL;
754 if (!strcmp (tag_name, GST_TAG_ARTIST))
756 else if (!strcmp (tag_name, GST_TAG_TITLE))
759 if (!gst_tag_list_get_string (tags, tag_name, &s))
762 _gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s),
764 data[0] = 0; /* tag name length */
765 data[1] = strlen (t);
766 memcpy (&data[2], t, strlen (t));
767 data[2 + strlen (t)] = 2; /* string */
768 data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
769 data[4 + strlen (t)] = (strlen (s)) & 0xff;
770 memcpy (&data[5 + strlen (t)], s, strlen (s));
771 script_tag = gst_buffer_join (script_tag, tmp);
778 if (mux->duration == GST_CLOCK_TIME_NONE) {
782 for (l = mux->collect->data; l; l = l->next) {
783 GstCollectData *cdata = l->data;
785 if (gst_pad_query_peer_duration (cdata->pad, GST_FORMAT_TIME,
786 (gint64 *) & dur) && dur != GST_CLOCK_TIME_NONE) {
787 if (mux->duration == GST_CLOCK_TIME_NONE)
790 mux->duration = MAX (dur, mux->duration);
795 if (!mux->streamable && mux->duration != GST_CLOCK_TIME_NONE) {
797 d = gst_guint64_to_gdouble (mux->duration);
798 d /= (gdouble) GST_SECOND;
800 GST_DEBUG_OBJECT (mux, "determined the duration to be %f", d);
801 data = gst_buffer_map (script_tag, NULL, NULL, GST_MAP_WRITE);
802 GST_WRITE_DOUBLE_BE (data + 29 + 2 + 8 + 1, d);
803 gst_buffer_unmap (script_tag, data, -1);
806 if (mux->have_video) {
807 GstPad *video_pad = NULL;
809 GSList *l = mux->collect->data;
811 for (; l; l = l->next) {
813 if (cpad && cpad->video) {
814 video_pad = cpad->collect.pad;
819 if (video_pad && gst_pad_has_current_caps (video_pad)) {
825 GST_DEBUG_OBJECT (mux, "putting videocodecid %d in the metadata",
828 tmp = gst_flv_mux_create_number_script_value ("videocodecid",
830 script_tag = gst_buffer_join (script_tag, tmp);
833 caps = gst_pad_get_current_caps (video_pad);
834 s = gst_caps_get_structure (caps, 0);
835 gst_caps_unref (caps);
837 if (gst_structure_get_int (s, "width", &size)) {
838 GST_DEBUG_OBJECT (mux, "putting width %d in the metadata", size);
840 tmp = gst_flv_mux_create_number_script_value ("width", size);
841 script_tag = gst_buffer_join (script_tag, tmp);
845 if (gst_structure_get_int (s, "height", &size)) {
846 GST_DEBUG_OBJECT (mux, "putting height %d in the metadata", size);
848 tmp = gst_flv_mux_create_number_script_value ("height", size);
849 script_tag = gst_buffer_join (script_tag, tmp);
853 if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &num, &den)) {
857 GST_DEBUG_OBJECT (mux, "putting AspectRatioX %f in the metadata", d);
859 tmp = gst_flv_mux_create_number_script_value ("AspectRatioX", d);
860 script_tag = gst_buffer_join (script_tag, tmp);
864 GST_DEBUG_OBJECT (mux, "putting AspectRatioY %f in the metadata", d);
866 tmp = gst_flv_mux_create_number_script_value ("AspectRatioY", d);
867 script_tag = gst_buffer_join (script_tag, tmp);
871 if (gst_structure_get_fraction (s, "framerate", &num, &den)) {
874 gst_util_fraction_to_double (num, den, &d);
875 GST_DEBUG_OBJECT (mux, "putting framerate %f in the metadata", d);
877 tmp = gst_flv_mux_create_number_script_value ("framerate", d);
878 script_tag = gst_buffer_join (script_tag, tmp);
884 if (mux->have_audio) {
885 GstPad *audio_pad = NULL;
887 GSList *l = mux->collect->data;
889 for (; l; l = l->next) {
891 if (cpad && !cpad->video) {
892 audio_pad = cpad->collect.pad;
898 GST_DEBUG_OBJECT (mux, "putting audiocodecid %d in the metadata",
901 tmp = gst_flv_mux_create_number_script_value ("audiocodecid",
903 script_tag = gst_buffer_join (script_tag, tmp);
909 const gchar *s = "GStreamer FLV muxer";
911 _gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s), &tmp, &data);
912 data[0] = 0; /* 15 bytes name */
914 memcpy (&data[2], "metadatacreator", 15);
915 data[17] = 2; /* string */
916 data[18] = (strlen (s) >> 8) & 0xff;
917 data[19] = (strlen (s)) & 0xff;
918 memcpy (&data[20], s, strlen (s));
919 script_tag = gst_buffer_join (script_tag, tmp);
925 GTimeVal tv = { 0, };
929 static const gchar *weekdays[] = {
930 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
932 static const gchar *months[] = {
933 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
934 "Aug", "Sep", "Oct", "Nov", "Dec"
937 g_get_current_time (&tv);
941 s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
942 months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
945 _gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s), &tmp, &data);
946 data[0] = 0; /* 12 bytes name */
948 memcpy (&data[2], "creationdate", 12);
949 data[14] = 2; /* string */
950 data[15] = (strlen (s) >> 8) & 0xff;
951 data[16] = (strlen (s)) & 0xff;
952 memcpy (&data[17], s, strlen (s));
953 script_tag = gst_buffer_join (script_tag, tmp);
959 _gst_buffer_new_and_alloc (2 + 0 + 1, &tmp, &data);
960 data[0] = 0; /* 0 byte size */
962 data[2] = 9; /* end marker */
963 script_tag = gst_buffer_join (script_tag, tmp);
966 _gst_buffer_new_and_alloc (4, &tmp, &data);
967 GST_WRITE_UINT32_BE (data, gst_buffer_get_size (script_tag));
968 script_tag = gst_buffer_join (script_tag, tmp);
970 data = gst_buffer_map (script_tag, NULL, NULL, GST_MAP_WRITE);
971 data[1] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 16) & 0xff;
972 data[2] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 8) & 0xff;
973 data[3] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 0) & 0xff;
975 GST_WRITE_UINT32_BE (data + 11 + 13 + 1, tags_written);
976 gst_buffer_unmap (script_tag, data, -1);
982 gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
983 GstFlvPad * cpad, gboolean is_codec_data)
989 (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) ? GST_BUFFER_TIMESTAMP (buffer) /
990 GST_MSECOND : cpad->last_timestamp / GST_MSECOND;
994 bdata = gst_buffer_map (buffer, &bsize, NULL, GST_MAP_READ);
999 if (cpad->video_codec == 7)
1005 if (cpad->audio_codec == 10)
1012 _gst_buffer_new_and_alloc (size, &tag, &data);
1013 GST_BUFFER_TIMESTAMP (tag) = timestamp * GST_MSECOND;
1014 memset (data, 0, size);
1016 data[0] = (cpad->video) ? 9 : 8;
1018 data[1] = ((size - 11 - 4) >> 16) & 0xff;
1019 data[2] = ((size - 11 - 4) >> 8) & 0xff;
1020 data[3] = ((size - 11 - 4) >> 0) & 0xff;
1022 /* wrap the timestamp every G_MAXINT32 miliseconds */
1023 timestamp &= 0x7fffffff;
1024 data[4] = (timestamp >> 16) & 0xff;
1025 data[5] = (timestamp >> 8) & 0xff;
1026 data[6] = (timestamp >> 0) & 0xff;
1027 data[7] = (timestamp >> 24) & 0xff;
1029 data[8] = data[9] = data[10] = 0;
1032 if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1037 data[11] |= cpad->video_codec & 0x0f;
1039 if (cpad->video_codec == 7) {
1040 data[12] = is_codec_data ? 0 : 1;
1042 /* FIXME: what to do about composition time */
1043 data[13] = data[14] = data[15] = 0;
1045 memcpy (data + 11 + 1 + 4, bdata, bsize);
1047 memcpy (data + 11 + 1, bdata, bsize);
1050 data[11] |= (cpad->audio_codec << 4) & 0xf0;
1051 data[11] |= (cpad->rate << 2) & 0x0c;
1052 data[11] |= (cpad->width << 1) & 0x02;
1053 data[11] |= (cpad->channels << 0) & 0x01;
1055 if (cpad->audio_codec == 10) {
1056 data[12] = is_codec_data ? 0 : 1;
1058 memcpy (data + 11 + 1 + 1, bdata, bsize);
1060 memcpy (data + 11 + 1, bdata, bsize);
1064 gst_buffer_unmap (buffer, bdata, -1);
1066 GST_WRITE_UINT32_BE (data + size - 4, size - 4);
1068 GST_BUFFER_TIMESTAMP (tag) = GST_BUFFER_TIMESTAMP (buffer);
1069 GST_BUFFER_DURATION (tag) = GST_BUFFER_DURATION (buffer);
1070 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET (buffer);
1071 GST_BUFFER_OFFSET_END (tag) = GST_BUFFER_OFFSET_END (buffer);
1073 /* mark the buffer if it's an audio buffer and there's also video being muxed
1074 * or it's a video interframe */
1075 if ((mux->have_video && !cpad->video) ||
1076 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1077 GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
1079 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
1080 GST_BUFFER_OFFSET_NONE;
1085 static inline GstBuffer *
1086 gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1089 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
1092 static inline GstBuffer *
1093 gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1096 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
1100 gst_flv_mux_put_buffer_in_streamheader (GValue * streamheader,
1103 GValue value = { 0 };
1106 g_value_init (&value, GST_TYPE_BUFFER);
1107 buf = gst_buffer_copy (buffer);
1108 gst_value_set_buffer (&value, buf);
1109 gst_buffer_unref (buf);
1110 gst_value_array_append_value (streamheader, &value);
1111 g_value_unset (&value);
1114 static GstFlowReturn
1115 gst_flv_mux_write_header (GstFlvMux * mux)
1117 GstBuffer *header, *metadata;
1118 GstBuffer *video_codec_data, *audio_codec_data;
1120 GstStructure *structure;
1121 GValue streamheader = { 0 };
1125 header = gst_flv_mux_create_header (mux);
1126 metadata = gst_flv_mux_create_metadata (mux);
1127 video_codec_data = NULL;
1128 audio_codec_data = NULL;
1130 for (l = mux->collect->data; l != NULL; l = l->next) {
1131 GstFlvPad *cpad = l->data;
1133 /* Get H.264 and AAC codec data, if present */
1134 if (cpad && cpad->video && cpad->video_codec == 7) {
1135 if (cpad->video_codec_data == NULL)
1136 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1137 "output might not be playable");
1140 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1142 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1143 if (cpad->audio_codec_data == NULL)
1144 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1145 "output might not be playable");
1148 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1153 /* mark buffers that will go in the streamheader */
1154 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_IN_CAPS);
1155 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_IN_CAPS);
1156 if (video_codec_data != NULL) {
1157 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1158 /* mark as a delta unit, so downstream will not try to synchronize on that
1159 * buffer - to actually start playback you need a real video keyframe */
1160 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1162 if (audio_codec_data != NULL) {
1163 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1166 /* put buffers in streamheader */
1167 g_value_init (&streamheader, GST_TYPE_ARRAY);
1168 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1169 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1170 if (video_codec_data != NULL)
1171 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1172 if (audio_codec_data != NULL)
1173 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1175 /* create the caps and put the streamheader in them */
1176 caps = gst_caps_new_empty_simple ("video/x-flv");
1177 structure = gst_caps_get_structure (caps, 0);
1178 gst_structure_set_value (structure, "streamheader", &streamheader);
1179 g_value_unset (&streamheader);
1181 if (!gst_pad_has_current_caps (mux->srcpad))
1182 gst_pad_set_caps (mux->srcpad, caps);
1184 gst_caps_unref (caps);
1186 /* push the header buffer, the metadata and the codec info, if any */
1187 ret = gst_flv_mux_push (mux, header);
1188 if (ret != GST_FLOW_OK)
1190 ret = gst_flv_mux_push (mux, metadata);
1191 if (ret != GST_FLOW_OK)
1193 if (video_codec_data != NULL) {
1194 ret = gst_flv_mux_push (mux, video_codec_data);
1195 if (ret != GST_FLOW_OK)
1198 if (audio_codec_data != NULL) {
1199 ret = gst_flv_mux_push (mux, audio_codec_data);
1200 if (ret != GST_FLOW_OK)
1207 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1210 * Add the tag byte offset and to the index if it's a valid seek point, which
1211 * means it's either a video keyframe or if there is no video pad (in that
1212 * case every FLV tag is a valid seek point)
1214 if (mux->have_video &&
1216 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1219 if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
1220 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1221 entry->position = mux->byte_count;
1223 gst_guint64_to_gdouble (GST_BUFFER_TIMESTAMP (buffer)) / GST_SECOND;
1224 mux->index = g_list_prepend (mux->index, entry);
1228 static GstFlowReturn
1229 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad)
1233 gst_collect_pads_pop (mux->collect, (GstCollectData *) cpad);
1236 /* arrange downstream running time */
1237 buffer = gst_buffer_make_writable (buffer);
1238 GST_BUFFER_TIMESTAMP (buffer) =
1239 gst_segment_to_running_time (&cpad->collect.segment,
1240 GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buffer));
1242 if (!mux->streamable)
1243 gst_flv_mux_update_index (mux, buffer, cpad);
1245 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1247 gst_buffer_unref (buffer);
1249 ret = gst_flv_mux_push (mux, tag);
1251 if (ret == GST_FLOW_OK && GST_BUFFER_TIMESTAMP_IS_VALID (tag))
1252 cpad->last_timestamp = GST_BUFFER_TIMESTAMP (tag);
1258 gst_flv_mux_determine_duration (GstFlvMux * mux)
1261 GstClockTime duration = GST_CLOCK_TIME_NONE;
1263 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1264 "from pad timestamps");
1266 for (l = mux->collect->data; l != NULL; l = l->next) {
1267 GstFlvPad *cpad = l->data;
1269 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1270 if (duration == GST_CLOCK_TIME_NONE)
1271 duration = cpad->last_timestamp;
1273 duration = MAX (duration, cpad->last_timestamp);
1277 if (duration == GST_CLOCK_TIME_NONE) {
1278 GST_DEBUG_OBJECT (mux, "not able to determine duration "
1279 "from pad timestamps, assuming 0");
1286 static GstFlowReturn
1287 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1289 GstBuffer *rewrite, *index, *tmp;
1294 guint32 index_len, allocate_size;
1295 guint32 i, index_skip;
1298 if (mux->streamable)
1301 /* seek back to the preallocated index space */
1302 gst_segment_init (&segment, GST_FORMAT_BYTES);
1303 segment.start = segment.time = 13 + 29;
1304 event = gst_event_new_segment (&segment);
1305 if (!gst_pad_push_event (mux->srcpad, event)) {
1306 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1310 /* if we were not able to determine the duration before, set it now */
1311 if (mux->duration == GST_CLOCK_TIME_NONE)
1312 mux->duration = gst_flv_mux_determine_duration (mux);
1314 /* rewrite the duration tag */
1315 d = gst_guint64_to_gdouble (mux->duration);
1316 d /= (gdouble) GST_SECOND;
1318 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1320 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1322 /* rewrite the filesize tag */
1323 d = gst_guint64_to_gdouble (mux->byte_count);
1325 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1327 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1328 rewrite = gst_buffer_join (rewrite, tmp);
1331 /* no index, so push buffer and return */
1332 return gst_flv_mux_push (mux, rewrite);
1335 /* rewrite the index */
1336 mux->index = g_list_reverse (mux->index);
1337 index_len = g_list_length (mux->index);
1339 /* We write at most MAX_INDEX_ENTRIES elements */
1340 if (index_len > MAX_INDEX_ENTRIES) {
1341 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1342 index_len = (index_len + index_skip - 1) / index_skip;
1347 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1348 /* see size calculation in gst_flv_mux_preallocate_index */
1349 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1350 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1351 _gst_buffer_new_and_alloc (allocate_size, &index, &data);
1353 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1354 memcpy (data + 2, "keyframes", 9);
1355 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1356 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1357 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1358 memcpy (data + 18, "times", 5);
1359 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1360 GST_WRITE_UINT32_BE (data + 24, index_len);
1363 /* the keyframes' times */
1364 for (i = 0, l = mux->index; l; l = l->next, i++) {
1365 GstFlvMuxIndexEntry *entry = l->data;
1367 if (i % index_skip != 0)
1369 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1370 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1374 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1375 memcpy (data + 2, "filepositions", 13);
1376 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1377 GST_WRITE_UINT32_BE (data + 16, index_len);
1380 /* the keyframes' file positions */
1381 for (i = 0, l = mux->index; l; l = l->next, i++) {
1382 GstFlvMuxIndexEntry *entry = l->data;
1384 if (i % index_skip != 0)
1386 GST_WRITE_UINT8 (data, 0);
1387 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1391 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1393 /* If there is space left in the prefilled area, reinsert the filler.
1394 There is at least 18 bytes free, so it will always fit. */
1395 if (index_len < MAX_INDEX_ENTRIES) {
1398 guint32 remaining_filler_size;
1400 _gst_buffer_new_and_alloc (14, &tmp, &data);
1401 GST_WRITE_UINT16_BE (data, 9);
1402 memcpy (data + 2, "gstfiller", 9);
1403 GST_WRITE_UINT8 (data + 11, 2); /* string */
1405 /* There is 18 bytes per remaining index entry minus what is used for
1406 * the'gstfiller' key. The rest is already filled with spaces, so just need
1407 * to update length. */
1408 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1409 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1410 remaining_filler_size);
1411 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1412 index = gst_buffer_join (index, tmp);
1415 rewrite = gst_buffer_join (rewrite, index);
1417 return gst_flv_mux_push (mux, rewrite);
1420 static GstFlowReturn
1421 gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data)
1423 GstFlvMux *mux = GST_FLV_MUX (user_data);
1425 GstClockTime best_time;
1428 gboolean eos = TRUE;
1430 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1433 if (mux->collect->data == NULL) {
1434 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1435 ("No input streams configured"));
1436 return GST_FLOW_ERROR;
1439 gst_segment_init (&segment, GST_FORMAT_BYTES);
1440 if (gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment)))
1441 ret = gst_flv_mux_write_header (mux);
1443 ret = GST_FLOW_ERROR;
1445 if (ret != GST_FLOW_OK)
1447 mux->state = GST_FLV_MUX_STATE_DATA;
1450 if (mux->new_tags) {
1451 GstBuffer *buf = gst_flv_mux_create_metadata (mux);
1452 gst_flv_mux_push (mux, buf);
1453 mux->new_tags = FALSE;
1458 best_time = GST_CLOCK_TIME_NONE;
1459 for (sl = mux->collect->data; sl; sl = sl->next) {
1460 GstFlvPad *cpad = sl->data;
1461 GstBuffer *buffer = gst_collect_pads_peek (pads, (GstCollectData *) cpad);
1469 time = GST_BUFFER_TIMESTAMP (buffer);
1470 gst_buffer_unref (buffer);
1472 /* Use buffers without valid timestamp first */
1473 if (!GST_CLOCK_TIME_IS_VALID (time)) {
1474 GST_WARNING_OBJECT (pads, "Buffer without valid timestamp");
1476 best_time = cpad->last_timestamp;
1481 time = gst_segment_to_running_time (&cpad->collect.segment,
1482 GST_FORMAT_TIME, time);
1483 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
1484 GST_DEBUG_OBJECT (mux, "clipping buffer on pad %s outside segment",
1485 GST_PAD_NAME (cpad->collect.pad));
1486 buffer = gst_collect_pads_pop (pads, (GstCollectData *) cpad);
1487 gst_buffer_unref (buffer);
1491 if (best == NULL || (GST_CLOCK_TIME_IS_VALID (best_time)
1492 && time < best_time)) {
1498 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1499 bigger timestamp is seen, for live the timestamp will get wrapped in
1500 gst_flv_mux_buffer_to_tag */
1501 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1502 && best_time / GST_MSECOND > G_MAXINT32) {
1503 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1508 return gst_flv_mux_write_buffer (mux, best);
1510 gst_flv_mux_rewrite_header (mux);
1511 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1512 return GST_FLOW_UNEXPECTED;
1519 gst_flv_mux_get_property (GObject * object,
1520 guint prop_id, GValue * value, GParamSpec * pspec)
1522 GstFlvMux *mux = GST_FLV_MUX (object);
1525 case PROP_STREAMABLE:
1526 g_value_set_boolean (value, mux->streamable);
1529 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1535 gst_flv_mux_set_property (GObject * object,
1536 guint prop_id, const GValue * value, GParamSpec * pspec)
1538 GstFlvMux *mux = GST_FLV_MUX (object);
1541 case PROP_STREAMABLE:
1542 mux->streamable = g_value_get_boolean (value);
1543 if (mux->streamable)
1544 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1545 GST_TAG_MERGE_REPLACE);
1547 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1548 GST_TAG_MERGE_KEEP);
1551 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1556 static GstStateChangeReturn
1557 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1559 GstStateChangeReturn ret;
1560 GstFlvMux *mux = GST_FLV_MUX (element);
1562 switch (transition) {
1563 case GST_STATE_CHANGE_NULL_TO_READY:
1565 case GST_STATE_CHANGE_READY_TO_PAUSED:
1566 gst_collect_pads_start (mux->collect);
1568 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1570 case GST_STATE_CHANGE_PAUSED_TO_READY:
1571 gst_collect_pads_stop (mux->collect);
1577 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1579 switch (transition) {
1580 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1582 case GST_STATE_CHANGE_PAUSED_TO_READY:
1583 gst_flv_mux_reset (GST_ELEMENT (mux));
1585 case GST_STATE_CHANGE_READY_TO_NULL: