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, GstObject * parent,
96 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
97 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps);
98 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
100 static gboolean gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps);
101 static gboolean gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps);
103 static void gst_flv_mux_get_property (GObject * object,
104 guint prop_id, GValue * value, GParamSpec * pspec);
105 static void gst_flv_mux_set_property (GObject * object,
106 guint prop_id, const GValue * value, GParamSpec * pspec);
108 static GstStateChangeReturn
109 gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
111 static void gst_flv_mux_reset (GstElement * element);
112 static void gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * pad,
119 } GstFlvMuxIndexEntry;
122 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
124 g_slice_free (GstFlvMuxIndexEntry, entry);
128 _gst_buffer_new_wrapped (gpointer mem, gsize size, GFreeFunc free_func)
132 buf = gst_buffer_new ();
133 gst_buffer_take_memory (buf, -1,
134 gst_memory_new_wrapped (free_func ? 0 : GST_MEMORY_FLAG_READONLY,
135 mem, free_func, size, 0, size));
141 _gst_buffer_new_and_alloc (gsize size, GstBuffer ** buffer, guint8 ** data)
143 g_return_if_fail (data != NULL);
144 g_return_if_fail (buffer != NULL);
146 *data = g_malloc (size);
147 *buffer = _gst_buffer_new_wrapped (*data, size, g_free);
151 gst_flv_mux_class_init (GstFlvMuxClass * klass)
153 GObjectClass *gobject_class;
154 GstElementClass *gstelement_class;
156 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
158 gobject_class = (GObjectClass *) klass;
159 gstelement_class = (GstElementClass *) klass;
161 gobject_class->get_property = gst_flv_mux_get_property;
162 gobject_class->set_property = gst_flv_mux_set_property;
163 gobject_class->finalize = gst_flv_mux_finalize;
165 /* FIXME: ideally the right mode of operation should be detected
166 * automatically using queries when parameter not specified. */
168 * GstFlvMux:streamable
170 * If True, the output will be streaming friendly. (ie without indexes and
175 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
176 g_param_spec_boolean ("streamable", "streamable",
177 "If set to true, the output should be as if it is to be streamed "
178 "and hence no indexes written or duration written.",
179 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
181 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
182 gstelement_class->request_new_pad =
183 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
184 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
186 gst_element_class_add_pad_template (gstelement_class,
187 gst_static_pad_template_get (&videosink_templ));
188 gst_element_class_add_pad_template (gstelement_class,
189 gst_static_pad_template_get (&audiosink_templ));
190 gst_element_class_add_pad_template (gstelement_class,
191 gst_static_pad_template_get (&src_templ));
192 gst_element_class_set_details_simple (gstelement_class, "FLV muxer",
194 "Muxes video/audio streams into a FLV stream",
195 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
197 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
201 gst_flv_mux_init (GstFlvMux * mux)
203 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
204 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
205 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
208 mux->streamable = DEFAULT_STREAMABLE;
210 mux->new_tags = FALSE;
212 mux->collect = gst_collect_pads_new ();
213 gst_collect_pads_set_function (mux->collect,
214 (GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_flv_mux_collected), mux);
216 gst_flv_mux_reset (GST_ELEMENT (mux));
220 gst_flv_mux_finalize (GObject * object)
222 GstFlvMux *mux = GST_FLV_MUX (object);
224 gst_object_unref (mux->collect);
226 G_OBJECT_CLASS (parent_class)->finalize (object);
230 gst_flv_mux_reset (GstElement * element)
232 GstFlvMux *mux = GST_FLV_MUX (element);
235 for (sl = mux->collect->data; sl != NULL; sl = g_slist_next (sl)) {
236 GstFlvPad *cpad = (GstFlvPad *) sl->data;
238 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
241 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
242 g_list_free (mux->index);
246 mux->have_audio = mux->have_video = FALSE;
247 mux->duration = GST_CLOCK_TIME_NONE;
248 mux->new_tags = FALSE;
250 mux->state = GST_FLV_MUX_STATE_HEADER;
253 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
257 gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
262 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
266 /* disable seeking for now */
272 return gst_pad_event_default (pad, parent, event);
276 gst_flv_mux_handle_sink_event (GstPad * pad, GstObject * parent,
279 GstFlvMux *mux = GST_FLV_MUX (parent);
282 switch (GST_EVENT_TYPE (event)) {
288 gst_event_parse_caps (event, &caps);
290 /* find stream data */
291 flvpad = (GstFlvPad *) gst_pad_get_element_private (pad);
295 ret = gst_flv_mux_video_pad_setcaps (pad, caps);
297 ret = gst_flv_mux_audio_pad_setcaps (pad, caps);
301 gst_event_unref (event);
306 GstTagSetter *setter = GST_TAG_SETTER (mux);
307 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
309 gst_event_parse_tag (event, &list);
310 gst_tag_setter_merge_tags (setter, list, mode);
311 mux->new_tags = TRUE;
318 /* now GstCollectPads can take care of the rest, e.g. EOS */
320 ret = mux->collect_event (pad, parent, event);
326 gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
328 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
329 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
333 s = gst_caps_get_structure (caps, 0);
335 if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
336 cpad->video_codec = 2;
337 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
338 cpad->video_codec = 3;
339 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
340 cpad->video_codec = 4;
341 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
342 cpad->video_codec = 5;
343 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
344 cpad->video_codec = 7;
349 if (ret && gst_structure_has_field (s, "codec_data")) {
350 const GValue *val = gst_structure_get_value (s, "codec_data");
353 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
356 gst_object_unref (mux);
362 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
364 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
365 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
369 s = gst_caps_get_structure (caps, 0);
371 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
372 const gchar *layout = gst_structure_get_string (s, "layout");
373 if (layout && strcmp (layout, "swf") == 0) {
374 cpad->audio_codec = 1;
378 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
381 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
382 if (mpegversion == 1) {
385 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
388 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
389 cpad->audio_codec = 14;
391 cpad->audio_codec = 2;
395 } else if (mpegversion == 4 || mpegversion == 2) {
396 cpad->audio_codec = 10;
403 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
406 if (gst_structure_get_int (s, "rate", &rate)
407 && gst_structure_get_int (s, "channels", &channels)) {
408 if (channels == 1 && rate == 16000)
409 cpad->audio_codec = 4;
410 else if (channels == 1 && rate == 8000)
411 cpad->audio_codec = 5;
413 cpad->audio_codec = 6;
415 cpad->audio_codec = 6;
417 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw-int") == 0) {
420 if (gst_structure_get_int (s, "endianness", &endianness)
421 && endianness == G_LITTLE_ENDIAN)
422 cpad->audio_codec = 3;
425 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
426 cpad->audio_codec = 7;
427 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
428 cpad->audio_codec = 8;
429 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
430 cpad->audio_codec = 11;
436 gint rate, channels, width;
438 if (gst_structure_get_int (s, "rate", &rate)) {
439 if (cpad->audio_codec == 10)
441 else if (rate == 5512)
443 else if (rate == 11025)
445 else if (rate == 22050)
447 else if (rate == 44100)
449 else if (rate == 8000 && (cpad->audio_codec == 5
450 || cpad->audio_codec == 14))
452 else if (rate == 16000 && cpad->audio_codec == 4)
456 } else if (cpad->audio_codec == 10) {
462 if (gst_structure_get_int (s, "channels", &channels)) {
463 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
464 || cpad->audio_codec == 6)
466 else if (cpad->audio_codec == 10)
468 else if (channels == 1)
470 else if (channels == 2)
474 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
475 || cpad->audio_codec == 6) {
477 } else if (cpad->audio_codec == 10) {
483 if (gst_structure_get_int (s, "width", &width)) {
484 if (cpad->audio_codec != 3)
488 else if (width == 16)
492 } else if (cpad->audio_codec != 3) {
499 if (ret && gst_structure_has_field (s, "codec_data")) {
500 const GValue *val = gst_structure_get_value (s, "codec_data");
503 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
506 gst_object_unref (mux);
512 gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * cpad, gboolean video)
516 if (cpad->audio_codec_data)
517 gst_buffer_unref (cpad->audio_codec_data);
518 cpad->audio_codec_data = NULL;
519 cpad->audio_codec = G_MAXUINT;
520 cpad->rate = G_MAXUINT;
521 cpad->width = G_MAXUINT;
522 cpad->channels = G_MAXUINT;
524 if (cpad->video_codec_data)
525 gst_buffer_unref (cpad->video_codec_data);
526 cpad->video_codec_data = NULL;
527 cpad->video_codec = G_MAXUINT;
528 cpad->last_timestamp = 0;
532 gst_flv_mux_request_new_pad (GstElement * element,
533 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
535 GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
536 GstFlvMux *mux = GST_FLV_MUX (element);
539 const gchar *name = NULL;
542 if (mux->state != GST_FLV_MUX_STATE_HEADER) {
543 GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
547 if (templ == gst_element_class_get_pad_template (klass, "audio")) {
548 if (mux->have_audio) {
549 GST_WARNING_OBJECT (mux, "Already have an audio pad");
552 mux->have_audio = TRUE;
555 } else if (templ == gst_element_class_get_pad_template (klass, "video")) {
556 if (mux->have_video) {
557 GST_WARNING_OBJECT (mux, "Already have a video pad");
560 mux->have_video = TRUE;
564 GST_WARNING_OBJECT (mux, "Invalid template");
568 pad = gst_pad_new_from_template (templ, name);
570 gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstFlvPad), NULL);
572 cpad->audio_codec_data = NULL;
573 cpad->video_codec_data = NULL;
574 gst_flv_mux_reset_pad (mux, cpad, video);
576 /* FIXME: hacked way to override/extend the event function of
577 * GstCollectPads; because it sets its own event function giving the
578 * element no access to events.
580 mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (pad);
581 gst_pad_set_event_function (pad,
582 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event));
584 gst_pad_set_active (pad, TRUE);
585 gst_element_add_pad (element, pad);
591 gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
593 GstFlvMux *mux = GST_FLV_MUX (GST_PAD_PARENT (pad));
594 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
596 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
597 gst_collect_pads_remove_pad (mux->collect, pad);
598 gst_element_remove_pad (element, pad);
602 gst_flv_mux_push (GstFlvMux * mux, GstBuffer * buffer)
604 /* pushing the buffer that rewrites the header will make it no longer be the
605 * total output size in bytes, but it doesn't matter at that point */
606 mux->byte_count += gst_buffer_get_size (buffer);
608 return gst_pad_push (mux->srcpad, buffer);
612 gst_flv_mux_create_header (GstFlvMux * mux)
617 _gst_buffer_new_and_alloc (9 + 4, &header, &data);
622 data[3] = 0x01; /* Version */
624 data[4] = (mux->have_audio << 2) | mux->have_video; /* flags */
625 GST_WRITE_UINT32_BE (data + 5, 9); /* data offset */
626 GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
632 gst_flv_mux_preallocate_index (GstFlvMux * mux)
636 gint preallocate_size;
638 /* preallocate index of size:
639 * - 'keyframes' ECMA array key: 2 + 9 = 11 bytes
640 * - nested ECMA array header, length and end marker: 8 bytes
641 * - 'times' and 'filepositions' keys: 22 bytes
642 * - two strict arrays headers and lengths: 10 bytes
643 * - each index entry: 18 bytes
645 preallocate_size = 11 + 8 + 22 + 10 + MAX_INDEX_ENTRIES * 18;
646 GST_DEBUG_OBJECT (mux, "preallocating %d bytes for the index",
649 _gst_buffer_new_and_alloc (preallocate_size, &tmp, &data);
651 /* prefill the space with a gstfiller: <spaces> script tag variable */
652 GST_WRITE_UINT16_BE (data, 9); /* 9 characters */
653 memcpy (data + 2, "gstfiller", 9);
654 GST_WRITE_UINT8 (data + 11, AMF0_STRING_MARKER); /* a string value */
655 GST_WRITE_UINT16_BE (data + 12, preallocate_size - 14);
656 memset (data + 14, ' ', preallocate_size - 14); /* the rest is spaces */
661 gst_flv_mux_create_number_script_value (const gchar * name, gdouble value)
665 gsize len = strlen (name);
667 _gst_buffer_new_and_alloc (2 + len + 1 + 8, &tmp, &data);
669 GST_WRITE_UINT16_BE (data, len);
670 data += 2; /* name length */
671 memcpy (data, name, len);
673 *data++ = AMF0_NUMBER_MARKER; /* double type */
674 GST_WRITE_DOUBLE_BE (data, value);
680 gst_flv_mux_create_metadata (GstFlvMux * mux)
682 const GstTagList *tags;
683 GstBuffer *script_tag, *tmp;
685 gint i, n_tags, tags_written = 0;
687 tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
689 GST_DEBUG_OBJECT (mux, "tags = %" GST_PTR_FORMAT, tags);
691 /* FIXME perhaps some bytewriter'ing here ... */
693 _gst_buffer_new_and_alloc (11, &script_tag, &data);
697 /* Data size, unknown for now */
703 data[4] = data[5] = data[6] = data[7] = 0;
706 data[8] = data[9] = data[10] = 0;
708 _gst_buffer_new_and_alloc (13, &tmp, &data);
709 data[0] = AMF0_STRING_MARKER; /* string */
711 data[2] = 10; /* length 10 */
712 memcpy (&data[3], "onMetaData", 10);
714 script_tag = gst_buffer_join (script_tag, tmp);
716 n_tags = (tags) ? gst_structure_n_fields ((GstStructure *) tags) : 0;
717 _gst_buffer_new_and_alloc (5, &tmp, &data);
718 data[0] = 8; /* ECMA array */
719 GST_WRITE_UINT32_BE (data + 1, n_tags);
720 script_tag = gst_buffer_join (script_tag, tmp);
722 /* Some players expect the 'duration' to be always set. Fill it out later,
723 after querying the pads or after getting EOS */
724 if (!mux->streamable) {
725 tmp = gst_flv_mux_create_number_script_value ("duration", 86400);
726 script_tag = gst_buffer_join (script_tag, tmp);
729 /* Sometimes the information about the total file size is useful for the
730 player. It will be filled later, after getting EOS */
731 tmp = gst_flv_mux_create_number_script_value ("filesize", 0);
732 script_tag = gst_buffer_join (script_tag, tmp);
735 /* Preallocate space for the index to be written at EOS */
736 tmp = gst_flv_mux_preallocate_index (mux);
737 script_tag = gst_buffer_join (script_tag, tmp);
739 GST_DEBUG_OBJECT (mux, "not preallocating index, streamable mode");
742 for (i = 0; tags && i < n_tags; i++) {
743 const gchar *tag_name =
744 gst_structure_nth_field_name ((const GstStructure *) tags, i);
745 if (!strcmp (tag_name, GST_TAG_DURATION)) {
748 if (!gst_tag_list_get_uint64 (tags, GST_TAG_DURATION, &dur))
751 } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
752 !strcmp (tag_name, GST_TAG_TITLE)) {
754 const gchar *t = NULL;
756 if (!strcmp (tag_name, GST_TAG_ARTIST))
758 else if (!strcmp (tag_name, GST_TAG_TITLE))
761 if (!gst_tag_list_get_string (tags, tag_name, &s))
764 _gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s),
766 data[0] = 0; /* tag name length */
767 data[1] = strlen (t);
768 memcpy (&data[2], t, strlen (t));
769 data[2 + strlen (t)] = 2; /* string */
770 data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
771 data[4 + strlen (t)] = (strlen (s)) & 0xff;
772 memcpy (&data[5 + strlen (t)], s, strlen (s));
773 script_tag = gst_buffer_join (script_tag, tmp);
780 if (mux->duration == GST_CLOCK_TIME_NONE) {
784 for (l = mux->collect->data; l; l = l->next) {
785 GstCollectData *cdata = l->data;
787 if (gst_pad_peer_query_duration (cdata->pad, GST_FORMAT_TIME,
788 (gint64 *) & dur) && dur != GST_CLOCK_TIME_NONE) {
789 if (mux->duration == GST_CLOCK_TIME_NONE)
792 mux->duration = MAX (dur, mux->duration);
797 if (!mux->streamable && mux->duration != GST_CLOCK_TIME_NONE) {
799 d = gst_guint64_to_gdouble (mux->duration);
800 d /= (gdouble) GST_SECOND;
802 GST_DEBUG_OBJECT (mux, "determined the duration to be %f", d);
803 data = gst_buffer_map (script_tag, NULL, NULL, GST_MAP_WRITE);
804 GST_WRITE_DOUBLE_BE (data + 29 + 2 + 8 + 1, d);
805 gst_buffer_unmap (script_tag, data, -1);
808 if (mux->have_video) {
809 GstPad *video_pad = NULL;
811 GSList *l = mux->collect->data;
813 for (; l; l = l->next) {
815 if (cpad && cpad->video) {
816 video_pad = cpad->collect.pad;
821 if (video_pad && gst_pad_has_current_caps (video_pad)) {
827 GST_DEBUG_OBJECT (mux, "putting videocodecid %d in the metadata",
830 tmp = gst_flv_mux_create_number_script_value ("videocodecid",
832 script_tag = gst_buffer_join (script_tag, tmp);
835 caps = gst_pad_get_current_caps (video_pad);
836 s = gst_caps_get_structure (caps, 0);
837 gst_caps_unref (caps);
839 if (gst_structure_get_int (s, "width", &size)) {
840 GST_DEBUG_OBJECT (mux, "putting width %d in the metadata", size);
842 tmp = gst_flv_mux_create_number_script_value ("width", size);
843 script_tag = gst_buffer_join (script_tag, tmp);
847 if (gst_structure_get_int (s, "height", &size)) {
848 GST_DEBUG_OBJECT (mux, "putting height %d in the metadata", size);
850 tmp = gst_flv_mux_create_number_script_value ("height", size);
851 script_tag = gst_buffer_join (script_tag, tmp);
855 if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &num, &den)) {
859 GST_DEBUG_OBJECT (mux, "putting AspectRatioX %f in the metadata", d);
861 tmp = gst_flv_mux_create_number_script_value ("AspectRatioX", d);
862 script_tag = gst_buffer_join (script_tag, tmp);
866 GST_DEBUG_OBJECT (mux, "putting AspectRatioY %f in the metadata", d);
868 tmp = gst_flv_mux_create_number_script_value ("AspectRatioY", d);
869 script_tag = gst_buffer_join (script_tag, tmp);
873 if (gst_structure_get_fraction (s, "framerate", &num, &den)) {
876 gst_util_fraction_to_double (num, den, &d);
877 GST_DEBUG_OBJECT (mux, "putting framerate %f in the metadata", d);
879 tmp = gst_flv_mux_create_number_script_value ("framerate", d);
880 script_tag = gst_buffer_join (script_tag, tmp);
886 if (mux->have_audio) {
887 GstPad *audio_pad = NULL;
889 GSList *l = mux->collect->data;
891 for (; l; l = l->next) {
893 if (cpad && !cpad->video) {
894 audio_pad = cpad->collect.pad;
900 GST_DEBUG_OBJECT (mux, "putting audiocodecid %d in the metadata",
903 tmp = gst_flv_mux_create_number_script_value ("audiocodecid",
905 script_tag = gst_buffer_join (script_tag, tmp);
911 const gchar *s = "GStreamer FLV muxer";
913 _gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s), &tmp, &data);
914 data[0] = 0; /* 15 bytes name */
916 memcpy (&data[2], "metadatacreator", 15);
917 data[17] = 2; /* string */
918 data[18] = (strlen (s) >> 8) & 0xff;
919 data[19] = (strlen (s)) & 0xff;
920 memcpy (&data[20], s, strlen (s));
921 script_tag = gst_buffer_join (script_tag, tmp);
927 GTimeVal tv = { 0, };
931 static const gchar *weekdays[] = {
932 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
934 static const gchar *months[] = {
935 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
936 "Aug", "Sep", "Oct", "Nov", "Dec"
939 g_get_current_time (&tv);
943 s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
944 months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
947 _gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s), &tmp, &data);
948 data[0] = 0; /* 12 bytes name */
950 memcpy (&data[2], "creationdate", 12);
951 data[14] = 2; /* string */
952 data[15] = (strlen (s) >> 8) & 0xff;
953 data[16] = (strlen (s)) & 0xff;
954 memcpy (&data[17], s, strlen (s));
955 script_tag = gst_buffer_join (script_tag, tmp);
961 _gst_buffer_new_and_alloc (2 + 0 + 1, &tmp, &data);
962 data[0] = 0; /* 0 byte size */
964 data[2] = 9; /* end marker */
965 script_tag = gst_buffer_join (script_tag, tmp);
968 _gst_buffer_new_and_alloc (4, &tmp, &data);
969 GST_WRITE_UINT32_BE (data, gst_buffer_get_size (script_tag));
970 script_tag = gst_buffer_join (script_tag, tmp);
972 data = gst_buffer_map (script_tag, NULL, NULL, GST_MAP_WRITE);
973 data[1] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 16) & 0xff;
974 data[2] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 8) & 0xff;
975 data[3] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 0) & 0xff;
977 GST_WRITE_UINT32_BE (data + 11 + 13 + 1, tags_written);
978 gst_buffer_unmap (script_tag, data, -1);
984 gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
985 GstFlvPad * cpad, gboolean is_codec_data)
991 (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) ? GST_BUFFER_TIMESTAMP (buffer) /
992 GST_MSECOND : cpad->last_timestamp / GST_MSECOND;
996 bdata = gst_buffer_map (buffer, &bsize, NULL, GST_MAP_READ);
1001 if (cpad->video_codec == 7)
1007 if (cpad->audio_codec == 10)
1014 _gst_buffer_new_and_alloc (size, &tag, &data);
1015 GST_BUFFER_TIMESTAMP (tag) = timestamp * GST_MSECOND;
1016 memset (data, 0, size);
1018 data[0] = (cpad->video) ? 9 : 8;
1020 data[1] = ((size - 11 - 4) >> 16) & 0xff;
1021 data[2] = ((size - 11 - 4) >> 8) & 0xff;
1022 data[3] = ((size - 11 - 4) >> 0) & 0xff;
1024 /* wrap the timestamp every G_MAXINT32 miliseconds */
1025 timestamp &= 0x7fffffff;
1026 data[4] = (timestamp >> 16) & 0xff;
1027 data[5] = (timestamp >> 8) & 0xff;
1028 data[6] = (timestamp >> 0) & 0xff;
1029 data[7] = (timestamp >> 24) & 0xff;
1031 data[8] = data[9] = data[10] = 0;
1034 if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1039 data[11] |= cpad->video_codec & 0x0f;
1041 if (cpad->video_codec == 7) {
1042 data[12] = is_codec_data ? 0 : 1;
1044 /* FIXME: what to do about composition time */
1045 data[13] = data[14] = data[15] = 0;
1047 memcpy (data + 11 + 1 + 4, bdata, bsize);
1049 memcpy (data + 11 + 1, bdata, bsize);
1052 data[11] |= (cpad->audio_codec << 4) & 0xf0;
1053 data[11] |= (cpad->rate << 2) & 0x0c;
1054 data[11] |= (cpad->width << 1) & 0x02;
1055 data[11] |= (cpad->channels << 0) & 0x01;
1057 if (cpad->audio_codec == 10) {
1058 data[12] = is_codec_data ? 0 : 1;
1060 memcpy (data + 11 + 1 + 1, bdata, bsize);
1062 memcpy (data + 11 + 1, bdata, bsize);
1066 gst_buffer_unmap (buffer, bdata, -1);
1068 GST_WRITE_UINT32_BE (data + size - 4, size - 4);
1070 GST_BUFFER_TIMESTAMP (tag) = GST_BUFFER_TIMESTAMP (buffer);
1071 GST_BUFFER_DURATION (tag) = GST_BUFFER_DURATION (buffer);
1072 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET (buffer);
1073 GST_BUFFER_OFFSET_END (tag) = GST_BUFFER_OFFSET_END (buffer);
1075 /* mark the buffer if it's an audio buffer and there's also video being muxed
1076 * or it's a video interframe */
1077 if ((mux->have_video && !cpad->video) ||
1078 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1079 GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
1081 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
1082 GST_BUFFER_OFFSET_NONE;
1087 static inline GstBuffer *
1088 gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1091 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
1094 static inline GstBuffer *
1095 gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1098 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
1102 gst_flv_mux_put_buffer_in_streamheader (GValue * streamheader,
1105 GValue value = { 0 };
1108 g_value_init (&value, GST_TYPE_BUFFER);
1109 buf = gst_buffer_copy (buffer);
1110 gst_value_set_buffer (&value, buf);
1111 gst_buffer_unref (buf);
1112 gst_value_array_append_value (streamheader, &value);
1113 g_value_unset (&value);
1116 static GstFlowReturn
1117 gst_flv_mux_write_header (GstFlvMux * mux)
1119 GstBuffer *header, *metadata;
1120 GstBuffer *video_codec_data, *audio_codec_data;
1122 GstStructure *structure;
1123 GValue streamheader = { 0 };
1127 header = gst_flv_mux_create_header (mux);
1128 metadata = gst_flv_mux_create_metadata (mux);
1129 video_codec_data = NULL;
1130 audio_codec_data = NULL;
1132 for (l = mux->collect->data; l != NULL; l = l->next) {
1133 GstFlvPad *cpad = l->data;
1135 /* Get H.264 and AAC codec data, if present */
1136 if (cpad && cpad->video && cpad->video_codec == 7) {
1137 if (cpad->video_codec_data == NULL)
1138 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1139 "output might not be playable");
1142 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1144 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1145 if (cpad->audio_codec_data == NULL)
1146 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1147 "output might not be playable");
1150 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1155 /* mark buffers that will go in the streamheader */
1156 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_IN_CAPS);
1157 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_IN_CAPS);
1158 if (video_codec_data != NULL) {
1159 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1160 /* mark as a delta unit, so downstream will not try to synchronize on that
1161 * buffer - to actually start playback you need a real video keyframe */
1162 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1164 if (audio_codec_data != NULL) {
1165 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_IN_CAPS);
1168 /* put buffers in streamheader */
1169 g_value_init (&streamheader, GST_TYPE_ARRAY);
1170 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1171 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1172 if (video_codec_data != NULL)
1173 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1174 if (audio_codec_data != NULL)
1175 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1177 /* create the caps and put the streamheader in them */
1178 caps = gst_caps_new_empty_simple ("video/x-flv");
1179 structure = gst_caps_get_structure (caps, 0);
1180 gst_structure_set_value (structure, "streamheader", &streamheader);
1181 g_value_unset (&streamheader);
1183 if (!gst_pad_has_current_caps (mux->srcpad))
1184 gst_pad_set_caps (mux->srcpad, caps);
1186 gst_caps_unref (caps);
1188 /* push the header buffer, the metadata and the codec info, if any */
1189 ret = gst_flv_mux_push (mux, header);
1190 if (ret != GST_FLOW_OK)
1192 ret = gst_flv_mux_push (mux, metadata);
1193 if (ret != GST_FLOW_OK)
1195 if (video_codec_data != NULL) {
1196 ret = gst_flv_mux_push (mux, video_codec_data);
1197 if (ret != GST_FLOW_OK)
1200 if (audio_codec_data != NULL) {
1201 ret = gst_flv_mux_push (mux, audio_codec_data);
1202 if (ret != GST_FLOW_OK)
1209 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1212 * Add the tag byte offset and to the index if it's a valid seek point, which
1213 * means it's either a video keyframe or if there is no video pad (in that
1214 * case every FLV tag is a valid seek point)
1216 if (mux->have_video &&
1218 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1221 if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
1222 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1223 entry->position = mux->byte_count;
1225 gst_guint64_to_gdouble (GST_BUFFER_TIMESTAMP (buffer)) / GST_SECOND;
1226 mux->index = g_list_prepend (mux->index, entry);
1230 static GstFlowReturn
1231 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad)
1235 gst_collect_pads_pop (mux->collect, (GstCollectData *) cpad);
1238 /* arrange downstream running time */
1239 buffer = gst_buffer_make_writable (buffer);
1240 GST_BUFFER_TIMESTAMP (buffer) =
1241 gst_segment_to_running_time (&cpad->collect.segment,
1242 GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buffer));
1244 if (!mux->streamable)
1245 gst_flv_mux_update_index (mux, buffer, cpad);
1247 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1249 gst_buffer_unref (buffer);
1251 ret = gst_flv_mux_push (mux, tag);
1253 if (ret == GST_FLOW_OK && GST_BUFFER_TIMESTAMP_IS_VALID (tag))
1254 cpad->last_timestamp = GST_BUFFER_TIMESTAMP (tag);
1260 gst_flv_mux_determine_duration (GstFlvMux * mux)
1263 GstClockTime duration = GST_CLOCK_TIME_NONE;
1265 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1266 "from pad timestamps");
1268 for (l = mux->collect->data; l != NULL; l = l->next) {
1269 GstFlvPad *cpad = l->data;
1271 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1272 if (duration == GST_CLOCK_TIME_NONE)
1273 duration = cpad->last_timestamp;
1275 duration = MAX (duration, cpad->last_timestamp);
1279 if (duration == GST_CLOCK_TIME_NONE) {
1280 GST_DEBUG_OBJECT (mux, "not able to determine duration "
1281 "from pad timestamps, assuming 0");
1288 static GstFlowReturn
1289 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1291 GstBuffer *rewrite, *index, *tmp;
1296 guint32 index_len, allocate_size;
1297 guint32 i, index_skip;
1300 if (mux->streamable)
1303 /* seek back to the preallocated index space */
1304 gst_segment_init (&segment, GST_FORMAT_BYTES);
1305 segment.start = segment.time = 13 + 29;
1306 event = gst_event_new_segment (&segment);
1307 if (!gst_pad_push_event (mux->srcpad, event)) {
1308 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1312 /* if we were not able to determine the duration before, set it now */
1313 if (mux->duration == GST_CLOCK_TIME_NONE)
1314 mux->duration = gst_flv_mux_determine_duration (mux);
1316 /* rewrite the duration tag */
1317 d = gst_guint64_to_gdouble (mux->duration);
1318 d /= (gdouble) GST_SECOND;
1320 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1322 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1324 /* rewrite the filesize tag */
1325 d = gst_guint64_to_gdouble (mux->byte_count);
1327 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1329 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1330 rewrite = gst_buffer_join (rewrite, tmp);
1333 /* no index, so push buffer and return */
1334 return gst_flv_mux_push (mux, rewrite);
1337 /* rewrite the index */
1338 mux->index = g_list_reverse (mux->index);
1339 index_len = g_list_length (mux->index);
1341 /* We write at most MAX_INDEX_ENTRIES elements */
1342 if (index_len > MAX_INDEX_ENTRIES) {
1343 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1344 index_len = (index_len + index_skip - 1) / index_skip;
1349 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1350 /* see size calculation in gst_flv_mux_preallocate_index */
1351 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1352 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1353 _gst_buffer_new_and_alloc (allocate_size, &index, &data);
1355 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1356 memcpy (data + 2, "keyframes", 9);
1357 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1358 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1359 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1360 memcpy (data + 18, "times", 5);
1361 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1362 GST_WRITE_UINT32_BE (data + 24, index_len);
1365 /* the keyframes' times */
1366 for (i = 0, l = mux->index; l; l = l->next, i++) {
1367 GstFlvMuxIndexEntry *entry = l->data;
1369 if (i % index_skip != 0)
1371 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1372 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1376 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1377 memcpy (data + 2, "filepositions", 13);
1378 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1379 GST_WRITE_UINT32_BE (data + 16, index_len);
1382 /* the keyframes' file positions */
1383 for (i = 0, l = mux->index; l; l = l->next, i++) {
1384 GstFlvMuxIndexEntry *entry = l->data;
1386 if (i % index_skip != 0)
1388 GST_WRITE_UINT8 (data, 0);
1389 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1393 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1395 /* If there is space left in the prefilled area, reinsert the filler.
1396 There is at least 18 bytes free, so it will always fit. */
1397 if (index_len < MAX_INDEX_ENTRIES) {
1400 guint32 remaining_filler_size;
1402 _gst_buffer_new_and_alloc (14, &tmp, &data);
1403 GST_WRITE_UINT16_BE (data, 9);
1404 memcpy (data + 2, "gstfiller", 9);
1405 GST_WRITE_UINT8 (data + 11, 2); /* string */
1407 /* There is 18 bytes per remaining index entry minus what is used for
1408 * the'gstfiller' key. The rest is already filled with spaces, so just need
1409 * to update length. */
1410 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1411 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1412 remaining_filler_size);
1413 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1414 index = gst_buffer_join (index, tmp);
1417 rewrite = gst_buffer_join (rewrite, index);
1419 return gst_flv_mux_push (mux, rewrite);
1422 static GstFlowReturn
1423 gst_flv_mux_collected (GstCollectPads * pads, gpointer user_data)
1425 GstFlvMux *mux = GST_FLV_MUX (user_data);
1427 GstClockTime best_time;
1430 gboolean eos = TRUE;
1432 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1435 if (mux->collect->data == NULL) {
1436 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1437 ("No input streams configured"));
1438 return GST_FLOW_ERROR;
1441 gst_segment_init (&segment, GST_FORMAT_BYTES);
1442 if (gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment)))
1443 ret = gst_flv_mux_write_header (mux);
1445 ret = GST_FLOW_ERROR;
1447 if (ret != GST_FLOW_OK)
1449 mux->state = GST_FLV_MUX_STATE_DATA;
1452 if (mux->new_tags) {
1453 GstBuffer *buf = gst_flv_mux_create_metadata (mux);
1454 gst_flv_mux_push (mux, buf);
1455 mux->new_tags = FALSE;
1460 best_time = GST_CLOCK_TIME_NONE;
1461 for (sl = mux->collect->data; sl; sl = sl->next) {
1462 GstFlvPad *cpad = sl->data;
1463 GstBuffer *buffer = gst_collect_pads_peek (pads, (GstCollectData *) cpad);
1471 time = GST_BUFFER_TIMESTAMP (buffer);
1472 gst_buffer_unref (buffer);
1474 /* Use buffers without valid timestamp first */
1475 if (!GST_CLOCK_TIME_IS_VALID (time)) {
1476 GST_WARNING_OBJECT (pads, "Buffer without valid timestamp");
1478 best_time = cpad->last_timestamp;
1483 time = gst_segment_to_running_time (&cpad->collect.segment,
1484 GST_FORMAT_TIME, time);
1485 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
1486 GST_DEBUG_OBJECT (mux, "clipping buffer on pad %s outside segment",
1487 GST_PAD_NAME (cpad->collect.pad));
1488 buffer = gst_collect_pads_pop (pads, (GstCollectData *) cpad);
1489 gst_buffer_unref (buffer);
1493 if (best == NULL || (GST_CLOCK_TIME_IS_VALID (best_time)
1494 && time < best_time)) {
1500 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1501 bigger timestamp is seen, for live the timestamp will get wrapped in
1502 gst_flv_mux_buffer_to_tag */
1503 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1504 && best_time / GST_MSECOND > G_MAXINT32) {
1505 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1510 return gst_flv_mux_write_buffer (mux, best);
1512 gst_flv_mux_rewrite_header (mux);
1513 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1514 return GST_FLOW_UNEXPECTED;
1521 gst_flv_mux_get_property (GObject * object,
1522 guint prop_id, GValue * value, GParamSpec * pspec)
1524 GstFlvMux *mux = GST_FLV_MUX (object);
1527 case PROP_STREAMABLE:
1528 g_value_set_boolean (value, mux->streamable);
1531 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1537 gst_flv_mux_set_property (GObject * object,
1538 guint prop_id, const GValue * value, GParamSpec * pspec)
1540 GstFlvMux *mux = GST_FLV_MUX (object);
1543 case PROP_STREAMABLE:
1544 mux->streamable = g_value_get_boolean (value);
1545 if (mux->streamable)
1546 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1547 GST_TAG_MERGE_REPLACE);
1549 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1550 GST_TAG_MERGE_KEEP);
1553 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1558 static GstStateChangeReturn
1559 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1561 GstStateChangeReturn ret;
1562 GstFlvMux *mux = GST_FLV_MUX (element);
1564 switch (transition) {
1565 case GST_STATE_CHANGE_NULL_TO_READY:
1567 case GST_STATE_CHANGE_READY_TO_PAUSED:
1568 gst_collect_pads_start (mux->collect);
1570 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1572 case GST_STATE_CHANGE_PAUSED_TO_READY:
1573 gst_collect_pads_stop (mux->collect);
1579 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1581 switch (transition) {
1582 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1584 case GST_STATE_CHANGE_PAUSED_TO_READY:
1585 gst_flv_mux_reset (GST_ELEMENT (mux));
1587 case GST_STATE_CHANGE_READY_TO_NULL: