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 <gst/audio/audio.h>
43 #include "gstflvmux.h"
46 GST_DEBUG_CATEGORY_STATIC (flvmux_debug);
47 #define GST_CAT_DEFAULT flvmux_debug
55 #define DEFAULT_STREAMABLE FALSE
56 #define MAX_INDEX_ENTRIES 128
58 static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
61 GST_STATIC_CAPS ("video/x-flv")
64 static GstStaticPadTemplate videosink_templ = GST_STATIC_PAD_TEMPLATE ("video",
67 GST_STATIC_CAPS ("video/x-flash-video; "
68 "video/x-flash-screen; "
69 "video/x-vp6-flash; " "video/x-vp6-alpha; "
70 "video/x-h264, stream-format=avc;")
73 static GstStaticPadTemplate audiosink_templ = GST_STATIC_PAD_TEMPLATE ("audio",
77 ("audio/x-adpcm, layout = (string) swf, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
78 "audio/mpeg, mpegversion = (int) 1, layer = (int) 3, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 22050, 44100 }, parsed = (boolean) TRUE; "
79 "audio/mpeg, mpegversion = (int) 2, framed = (boolean) TRUE; "
80 "audio/mpeg, mpegversion = (int) 4, stream-format = (string) raw, framed = (boolean) TRUE; "
81 "audio/x-nellymoser, channels = (int) { 1, 2 }, rate = (int) { 5512, 8000, 11025, 16000, 22050, 44100 }; "
82 "audio/x-raw, format = (string) { U8, S16LE}, layout = (string) interleaved, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
83 "audio/x-alaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
84 "audio/x-mulaw, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 }; "
85 "audio/x-speex, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 };")
88 #define gst_flv_mux_parent_class parent_class
89 G_DEFINE_TYPE_WITH_CODE (GstFlvMux, gst_flv_mux, GST_TYPE_ELEMENT,
90 G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL));
92 static void gst_flv_mux_finalize (GObject * object);
94 gst_flv_mux_handle_buffer (GstCollectPads2 * pads, GstCollectData2 * cdata,
95 GstBuffer * buf, gpointer user_data);
97 gst_flv_mux_handle_sink_event (GstCollectPads2 * pads, GstCollectData2 * data,
98 GstEvent * event, gpointer user_data);
100 static gboolean gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
102 static GstPad *gst_flv_mux_request_new_pad (GstElement * element,
103 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps);
104 static void gst_flv_mux_release_pad (GstElement * element, GstPad * pad);
106 static gboolean gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps);
107 static gboolean gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps);
109 static void gst_flv_mux_get_property (GObject * object,
110 guint prop_id, GValue * value, GParamSpec * pspec);
111 static void gst_flv_mux_set_property (GObject * object,
112 guint prop_id, const GValue * value, GParamSpec * pspec);
114 static GstStateChangeReturn
115 gst_flv_mux_change_state (GstElement * element, GstStateChange transition);
117 static void gst_flv_mux_reset (GstElement * element);
118 static void gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * pad,
125 } GstFlvMuxIndexEntry;
128 gst_flv_mux_index_entry_free (GstFlvMuxIndexEntry * entry)
130 g_slice_free (GstFlvMuxIndexEntry, entry);
134 _gst_buffer_new_wrapped (gpointer mem, gsize size, GFreeFunc free_func)
138 buf = gst_buffer_new ();
139 gst_buffer_append_memory (buf,
140 gst_memory_new_wrapped (free_func ? 0 : GST_MEMORY_FLAG_READONLY,
141 mem, size, 0, size, mem, free_func));
147 _gst_buffer_new_and_alloc (gsize size, GstBuffer ** buffer, guint8 ** data)
149 g_return_if_fail (data != NULL);
150 g_return_if_fail (buffer != NULL);
152 *data = g_malloc (size);
153 *buffer = _gst_buffer_new_wrapped (*data, size, g_free);
157 gst_flv_mux_class_init (GstFlvMuxClass * klass)
159 GObjectClass *gobject_class;
160 GstElementClass *gstelement_class;
162 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
164 gobject_class = (GObjectClass *) klass;
165 gstelement_class = (GstElementClass *) klass;
167 gobject_class->get_property = gst_flv_mux_get_property;
168 gobject_class->set_property = gst_flv_mux_set_property;
169 gobject_class->finalize = gst_flv_mux_finalize;
171 /* FIXME: ideally the right mode of operation should be detected
172 * automatically using queries when parameter not specified. */
174 * GstFlvMux:streamable
176 * If True, the output will be streaming friendly. (ie without indexes and
181 g_object_class_install_property (gobject_class, PROP_STREAMABLE,
182 g_param_spec_boolean ("streamable", "streamable",
183 "If set to true, the output should be as if it is to be streamed "
184 "and hence no indexes written or duration written.",
185 DEFAULT_STREAMABLE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
187 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_flv_mux_change_state);
188 gstelement_class->request_new_pad =
189 GST_DEBUG_FUNCPTR (gst_flv_mux_request_new_pad);
190 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_flv_mux_release_pad);
192 gst_element_class_add_pad_template (gstelement_class,
193 gst_static_pad_template_get (&videosink_templ));
194 gst_element_class_add_pad_template (gstelement_class,
195 gst_static_pad_template_get (&audiosink_templ));
196 gst_element_class_add_pad_template (gstelement_class,
197 gst_static_pad_template_get (&src_templ));
198 gst_element_class_set_details_simple (gstelement_class, "FLV muxer",
200 "Muxes video/audio streams into a FLV stream",
201 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
203 GST_DEBUG_CATEGORY_INIT (flvmux_debug, "flvmux", 0, "FLV muxer");
207 gst_flv_mux_init (GstFlvMux * mux)
209 mux->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
210 gst_pad_set_event_function (mux->srcpad, gst_flv_mux_handle_src_event);
211 gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
214 mux->streamable = DEFAULT_STREAMABLE;
216 mux->new_tags = FALSE;
218 mux->collect = gst_collect_pads2_new ();
219 gst_collect_pads2_set_buffer_function (mux->collect,
220 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_buffer), mux);
221 gst_collect_pads2_set_event_function (mux->collect,
222 GST_DEBUG_FUNCPTR (gst_flv_mux_handle_sink_event), mux);
223 gst_collect_pads2_set_clip_function (mux->collect,
224 GST_DEBUG_FUNCPTR (gst_collect_pads2_clip_running_time), mux);
226 gst_flv_mux_reset (GST_ELEMENT (mux));
230 gst_flv_mux_finalize (GObject * object)
232 GstFlvMux *mux = GST_FLV_MUX (object);
234 gst_object_unref (mux->collect);
236 G_OBJECT_CLASS (parent_class)->finalize (object);
240 gst_flv_mux_reset (GstElement * element)
242 GstFlvMux *mux = GST_FLV_MUX (element);
245 for (sl = mux->collect->data; sl != NULL; sl = g_slist_next (sl)) {
246 GstFlvPad *cpad = (GstFlvPad *) sl->data;
248 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
251 g_list_foreach (mux->index, (GFunc) gst_flv_mux_index_entry_free, NULL);
252 g_list_free (mux->index);
256 mux->have_audio = mux->have_video = FALSE;
257 mux->duration = GST_CLOCK_TIME_NONE;
258 mux->new_tags = FALSE;
260 mux->state = GST_FLV_MUX_STATE_HEADER;
263 gst_tag_setter_reset_tags (GST_TAG_SETTER (mux));
267 gst_flv_mux_handle_src_event (GstPad * pad, GstObject * parent,
272 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
276 /* disable seeking for now */
282 return gst_pad_event_default (pad, parent, event);
286 gst_flv_mux_handle_sink_event (GstCollectPads2 * pads, GstCollectData2 * data,
287 GstEvent * event, gpointer user_data)
289 GstFlvMux *mux = GST_FLV_MUX (user_data);
290 gboolean ret = FALSE;
292 switch (GST_EVENT_TYPE (event)) {
298 gst_event_parse_caps (event, &caps);
300 /* find stream data */
301 flvpad = (GstFlvPad *) data;
305 ret = gst_flv_mux_video_pad_setcaps (data->pad, caps);
307 ret = gst_flv_mux_audio_pad_setcaps (data->pad, caps);
310 gst_event_unref (event);
315 GstTagSetter *setter = GST_TAG_SETTER (mux);
316 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
318 gst_event_parse_tag (event, &list);
319 gst_tag_setter_merge_tags (setter, list, mode);
320 mux->new_tags = TRUE;
322 gst_event_unref (event);
326 case GST_EVENT_SEGMENT:
327 gst_event_unref (event);
331 ret = gst_pad_event_default (data->pad, GST_OBJECT (mux), event);
339 gst_flv_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
341 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
342 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
346 s = gst_caps_get_structure (caps, 0);
348 if (strcmp (gst_structure_get_name (s), "video/x-flash-video") == 0) {
349 cpad->video_codec = 2;
350 } else if (strcmp (gst_structure_get_name (s), "video/x-flash-screen") == 0) {
351 cpad->video_codec = 3;
352 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-flash") == 0) {
353 cpad->video_codec = 4;
354 } else if (strcmp (gst_structure_get_name (s), "video/x-vp6-alpha") == 0) {
355 cpad->video_codec = 5;
356 } else if (strcmp (gst_structure_get_name (s), "video/x-h264") == 0) {
357 cpad->video_codec = 7;
362 if (ret && gst_structure_has_field (s, "codec_data")) {
363 const GValue *val = gst_structure_get_value (s, "codec_data");
366 cpad->video_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
369 gst_object_unref (mux);
375 gst_flv_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
377 GstFlvMux *mux = GST_FLV_MUX (gst_pad_get_parent (pad));
378 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
382 s = gst_caps_get_structure (caps, 0);
384 if (strcmp (gst_structure_get_name (s), "audio/x-adpcm") == 0) {
385 const gchar *layout = gst_structure_get_string (s, "layout");
386 if (layout && strcmp (layout, "swf") == 0) {
387 cpad->audio_codec = 1;
391 } else if (strcmp (gst_structure_get_name (s), "audio/mpeg") == 0) {
394 if (gst_structure_get_int (s, "mpegversion", &mpegversion)) {
395 if (mpegversion == 1) {
398 if (gst_structure_get_int (s, "layer", &layer) && layer == 3) {
401 if (gst_structure_get_int (s, "rate", &rate) && rate == 8000)
402 cpad->audio_codec = 14;
404 cpad->audio_codec = 2;
408 } else if (mpegversion == 4 || mpegversion == 2) {
409 cpad->audio_codec = 10;
416 } else if (strcmp (gst_structure_get_name (s), "audio/x-nellymoser") == 0) {
419 if (gst_structure_get_int (s, "rate", &rate)
420 && gst_structure_get_int (s, "channels", &channels)) {
421 if (channels == 1 && rate == 16000)
422 cpad->audio_codec = 4;
423 else if (channels == 1 && rate == 8000)
424 cpad->audio_codec = 5;
426 cpad->audio_codec = 6;
428 cpad->audio_codec = 6;
430 } else if (strcmp (gst_structure_get_name (s), "audio/x-raw") == 0) {
433 if (gst_audio_info_from_caps (&info, caps)) {
434 cpad->audio_codec = 3;
436 if (GST_AUDIO_INFO_WIDTH (&info) == 8)
438 else if (GST_AUDIO_INFO_WIDTH (&info) == 16)
444 } else if (strcmp (gst_structure_get_name (s), "audio/x-alaw") == 0) {
445 cpad->audio_codec = 7;
446 } else if (strcmp (gst_structure_get_name (s), "audio/x-mulaw") == 0) {
447 cpad->audio_codec = 8;
448 } else if (strcmp (gst_structure_get_name (s), "audio/x-speex") == 0) {
449 cpad->audio_codec = 11;
457 if (gst_structure_get_int (s, "rate", &rate)) {
458 if (cpad->audio_codec == 10)
460 else if (rate == 5512)
462 else if (rate == 11025)
464 else if (rate == 22050)
466 else if (rate == 44100)
468 else if (rate == 8000 && (cpad->audio_codec == 5
469 || cpad->audio_codec == 14))
471 else if (rate == 16000 && cpad->audio_codec == 4)
475 } else if (cpad->audio_codec == 10) {
481 if (gst_structure_get_int (s, "channels", &channels)) {
482 if (cpad->audio_codec == 4 || cpad->audio_codec == 5
483 || cpad->audio_codec == 6)
485 else if (cpad->audio_codec == 10)
487 else if (channels == 1)
489 else if (channels == 2)
493 } else if (cpad->audio_codec == 4 || cpad->audio_codec == 5
494 || cpad->audio_codec == 6) {
496 } else if (cpad->audio_codec == 10) {
502 if (cpad->audio_codec != 3)
506 if (ret && gst_structure_has_field (s, "codec_data")) {
507 const GValue *val = gst_structure_get_value (s, "codec_data");
510 cpad->audio_codec_data = gst_buffer_ref (gst_value_get_buffer (val));
513 gst_object_unref (mux);
519 gst_flv_mux_reset_pad (GstFlvMux * mux, GstFlvPad * cpad, gboolean video)
523 if (cpad->audio_codec_data)
524 gst_buffer_unref (cpad->audio_codec_data);
525 cpad->audio_codec_data = NULL;
526 cpad->audio_codec = G_MAXUINT;
527 cpad->rate = G_MAXUINT;
528 cpad->width = G_MAXUINT;
529 cpad->channels = G_MAXUINT;
531 if (cpad->video_codec_data)
532 gst_buffer_unref (cpad->video_codec_data);
533 cpad->video_codec_data = NULL;
534 cpad->video_codec = G_MAXUINT;
535 cpad->last_timestamp = 0;
539 gst_flv_mux_request_new_pad (GstElement * element,
540 GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
542 GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
543 GstFlvMux *mux = GST_FLV_MUX (element);
546 const gchar *name = NULL;
549 if (mux->state != GST_FLV_MUX_STATE_HEADER) {
550 GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
554 if (templ == gst_element_class_get_pad_template (klass, "audio")) {
555 if (mux->have_audio) {
556 GST_WARNING_OBJECT (mux, "Already have an audio pad");
559 mux->have_audio = TRUE;
562 } else if (templ == gst_element_class_get_pad_template (klass, "video")) {
563 if (mux->have_video) {
564 GST_WARNING_OBJECT (mux, "Already have a video pad");
567 mux->have_video = TRUE;
571 GST_WARNING_OBJECT (mux, "Invalid template");
575 pad = gst_pad_new_from_template (templ, name);
577 gst_collect_pads2_add_pad (mux->collect, pad, sizeof (GstFlvPad));
579 cpad->audio_codec_data = NULL;
580 cpad->video_codec_data = NULL;
581 gst_flv_mux_reset_pad (mux, cpad, video);
583 gst_pad_set_active (pad, TRUE);
584 gst_element_add_pad (element, pad);
590 gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
592 GstFlvMux *mux = GST_FLV_MUX (GST_PAD_PARENT (pad));
593 GstFlvPad *cpad = (GstFlvPad *) gst_pad_get_element_private (pad);
595 gst_flv_mux_reset_pad (mux, cpad, cpad->video);
596 gst_collect_pads2_remove_pad (mux->collect, pad);
597 gst_element_remove_pad (element, pad);
601 gst_flv_mux_push (GstFlvMux * mux, GstBuffer * buffer)
603 /* pushing the buffer that rewrites the header will make it no longer be the
604 * total output size in bytes, but it doesn't matter at that point */
605 mux->byte_count += gst_buffer_get_size (buffer);
607 return gst_pad_push (mux->srcpad, buffer);
611 gst_flv_mux_create_header (GstFlvMux * mux)
616 _gst_buffer_new_and_alloc (9 + 4, &header, &data);
621 data[3] = 0x01; /* Version */
623 data[4] = (mux->have_audio << 2) | mux->have_video; /* flags */
624 GST_WRITE_UINT32_BE (data + 5, 9); /* data offset */
625 GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
631 gst_flv_mux_preallocate_index (GstFlvMux * mux)
635 gint preallocate_size;
637 /* preallocate index of size:
638 * - 'keyframes' ECMA array key: 2 + 9 = 11 bytes
639 * - nested ECMA array header, length and end marker: 8 bytes
640 * - 'times' and 'filepositions' keys: 22 bytes
641 * - two strict arrays headers and lengths: 10 bytes
642 * - each index entry: 18 bytes
644 preallocate_size = 11 + 8 + 22 + 10 + MAX_INDEX_ENTRIES * 18;
645 GST_DEBUG_OBJECT (mux, "preallocating %d bytes for the index",
648 _gst_buffer_new_and_alloc (preallocate_size, &tmp, &data);
650 /* prefill the space with a gstfiller: <spaces> script tag variable */
651 GST_WRITE_UINT16_BE (data, 9); /* 9 characters */
652 memcpy (data + 2, "gstfiller", 9);
653 GST_WRITE_UINT8 (data + 11, AMF0_STRING_MARKER); /* a string value */
654 GST_WRITE_UINT16_BE (data + 12, preallocate_size - 14);
655 memset (data + 14, ' ', preallocate_size - 14); /* the rest is spaces */
660 gst_flv_mux_create_number_script_value (const gchar * name, gdouble value)
664 gsize len = strlen (name);
666 _gst_buffer_new_and_alloc (2 + len + 1 + 8, &tmp, &data);
668 GST_WRITE_UINT16_BE (data, len);
669 data += 2; /* name length */
670 memcpy (data, name, len);
672 *data++ = AMF0_NUMBER_MARKER; /* double type */
673 GST_WRITE_DOUBLE_BE (data, value);
679 gst_flv_mux_create_metadata (GstFlvMux * mux, gboolean full)
681 const GstTagList *tags;
682 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_append (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_append (script_tag, tmp);
725 /* Some players expect the 'duration' to be always set. Fill it out later,
726 after querying the pads or after getting EOS */
727 if (!mux->streamable) {
728 tmp = gst_flv_mux_create_number_script_value ("duration", 86400);
729 script_tag = gst_buffer_append (script_tag, tmp);
732 /* Sometimes the information about the total file size is useful for the
733 player. It will be filled later, after getting EOS */
734 tmp = gst_flv_mux_create_number_script_value ("filesize", 0);
735 script_tag = gst_buffer_append (script_tag, tmp);
738 /* Preallocate space for the index to be written at EOS */
739 tmp = gst_flv_mux_preallocate_index (mux);
740 script_tag = gst_buffer_append (script_tag, tmp);
742 GST_DEBUG_OBJECT (mux, "not preallocating index, streamable mode");
746 for (i = 0; tags && i < n_tags; i++) {
747 const gchar *tag_name =
748 gst_structure_nth_field_name ((const GstStructure *) tags, i);
749 if (!strcmp (tag_name, GST_TAG_DURATION)) {
752 if (!gst_tag_list_get_uint64 (tags, GST_TAG_DURATION, &dur))
755 } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
756 !strcmp (tag_name, GST_TAG_TITLE)) {
758 const gchar *t = NULL;
760 if (!strcmp (tag_name, GST_TAG_ARTIST))
762 else if (!strcmp (tag_name, GST_TAG_TITLE))
765 if (!gst_tag_list_get_string (tags, tag_name, &s))
768 _gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s),
770 data[0] = 0; /* tag name length */
771 data[1] = strlen (t);
772 memcpy (&data[2], t, strlen (t));
773 data[2 + strlen (t)] = 2; /* string */
774 data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
775 data[4 + strlen (t)] = (strlen (s)) & 0xff;
776 memcpy (&data[5 + strlen (t)], s, strlen (s));
777 script_tag = gst_buffer_append (script_tag, tmp);
787 if (mux->duration == GST_CLOCK_TIME_NONE) {
791 for (l = mux->collect->data; l; l = l->next) {
792 GstCollectData2 *cdata = l->data;
794 if (gst_pad_peer_query_duration (cdata->pad, GST_FORMAT_TIME,
795 (gint64 *) & dur) && dur != GST_CLOCK_TIME_NONE) {
796 if (mux->duration == GST_CLOCK_TIME_NONE)
799 mux->duration = MAX (dur, mux->duration);
804 if (!mux->streamable && mux->duration != GST_CLOCK_TIME_NONE) {
808 d = gst_guint64_to_gdouble (mux->duration);
809 d /= (gdouble) GST_SECOND;
811 GST_DEBUG_OBJECT (mux, "determined the duration to be %f", d);
812 gst_buffer_map (script_tag, &map, GST_MAP_WRITE);
813 GST_WRITE_DOUBLE_BE (map.data + 29 + 2 + 8 + 1, d);
814 gst_buffer_unmap (script_tag, &map);
817 if (mux->have_video) {
818 GstPad *video_pad = NULL;
820 GSList *l = mux->collect->data;
822 for (; l; l = l->next) {
824 if (cpad && cpad->video) {
825 video_pad = cpad->collect.pad;
830 if (video_pad && gst_pad_has_current_caps (video_pad)) {
836 GST_DEBUG_OBJECT (mux, "putting videocodecid %d in the metadata",
839 tmp = gst_flv_mux_create_number_script_value ("videocodecid",
841 script_tag = gst_buffer_append (script_tag, tmp);
844 caps = gst_pad_get_current_caps (video_pad);
845 s = gst_caps_get_structure (caps, 0);
846 gst_caps_unref (caps);
848 if (gst_structure_get_int (s, "width", &size)) {
849 GST_DEBUG_OBJECT (mux, "putting width %d in the metadata", size);
851 tmp = gst_flv_mux_create_number_script_value ("width", size);
852 script_tag = gst_buffer_append (script_tag, tmp);
856 if (gst_structure_get_int (s, "height", &size)) {
857 GST_DEBUG_OBJECT (mux, "putting height %d in the metadata", size);
859 tmp = gst_flv_mux_create_number_script_value ("height", size);
860 script_tag = gst_buffer_append (script_tag, tmp);
864 if (gst_structure_get_fraction (s, "pixel-aspect-ratio", &num, &den)) {
868 GST_DEBUG_OBJECT (mux, "putting AspectRatioX %f in the metadata", d);
870 tmp = gst_flv_mux_create_number_script_value ("AspectRatioX", d);
871 script_tag = gst_buffer_append (script_tag, tmp);
875 GST_DEBUG_OBJECT (mux, "putting AspectRatioY %f in the metadata", d);
877 tmp = gst_flv_mux_create_number_script_value ("AspectRatioY", d);
878 script_tag = gst_buffer_append (script_tag, tmp);
882 if (gst_structure_get_fraction (s, "framerate", &num, &den)) {
885 gst_util_fraction_to_double (num, den, &d);
886 GST_DEBUG_OBJECT (mux, "putting framerate %f in the metadata", d);
888 tmp = gst_flv_mux_create_number_script_value ("framerate", d);
889 script_tag = gst_buffer_append (script_tag, tmp);
895 if (mux->have_audio) {
896 GstPad *audio_pad = NULL;
898 GSList *l = mux->collect->data;
900 for (; l; l = l->next) {
902 if (cpad && !cpad->video) {
903 audio_pad = cpad->collect.pad;
909 GST_DEBUG_OBJECT (mux, "putting audiocodecid %d in the metadata",
912 tmp = gst_flv_mux_create_number_script_value ("audiocodecid",
914 script_tag = gst_buffer_append (script_tag, tmp);
920 const gchar *s = "GStreamer FLV muxer";
922 _gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s), &tmp, &data);
923 data[0] = 0; /* 15 bytes name */
925 memcpy (&data[2], "metadatacreator", 15);
926 data[17] = 2; /* string */
927 data[18] = (strlen (s) >> 8) & 0xff;
928 data[19] = (strlen (s)) & 0xff;
929 memcpy (&data[20], s, strlen (s));
930 script_tag = gst_buffer_append (script_tag, tmp);
936 GTimeVal tv = { 0, };
940 static const gchar *weekdays[] = {
941 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
943 static const gchar *months[] = {
944 "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
945 "Aug", "Sep", "Oct", "Nov", "Dec"
948 g_get_current_time (&tv);
952 s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
953 months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
956 _gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s), &tmp, &data);
957 data[0] = 0; /* 12 bytes name */
959 memcpy (&data[2], "creationdate", 12);
960 data[14] = 2; /* string */
961 data[15] = (strlen (s) >> 8) & 0xff;
962 data[16] = (strlen (s)) & 0xff;
963 memcpy (&data[17], s, strlen (s));
964 script_tag = gst_buffer_append (script_tag, tmp);
973 gst_buffer_unref (script_tag);
978 _gst_buffer_new_and_alloc (2 + 0 + 1, &tmp, &data);
979 data[0] = 0; /* 0 byte size */
981 data[2] = 9; /* end marker */
982 script_tag = gst_buffer_append (script_tag, tmp);
985 _gst_buffer_new_and_alloc (4, &tmp, &data);
986 GST_WRITE_UINT32_BE (data, gst_buffer_get_size (script_tag));
987 script_tag = gst_buffer_append (script_tag, tmp);
989 gst_buffer_map (script_tag, &map, GST_MAP_WRITE);
990 map.data[1] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 16) & 0xff;
991 map.data[2] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 8) & 0xff;
992 map.data[3] = ((gst_buffer_get_size (script_tag) - 11 - 4) >> 0) & 0xff;
994 GST_WRITE_UINT32_BE (map.data + 11 + 13 + 1, tags_written);
995 gst_buffer_unmap (script_tag, &map);
1002 gst_flv_mux_buffer_to_tag_internal (GstFlvMux * mux, GstBuffer * buffer,
1003 GstFlvPad * cpad, gboolean is_codec_data)
1009 (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) ? GST_BUFFER_TIMESTAMP (buffer) /
1010 GST_MSECOND : cpad->last_timestamp / GST_MSECOND;
1011 guint8 *data, *bdata;
1014 gst_buffer_map (buffer, &map, GST_MAP_READ);
1021 if (cpad->video_codec == 7)
1027 if (cpad->audio_codec == 10)
1034 _gst_buffer_new_and_alloc (size, &tag, &data);
1035 GST_BUFFER_TIMESTAMP (tag) = timestamp * GST_MSECOND;
1036 memset (data, 0, size);
1038 data[0] = (cpad->video) ? 9 : 8;
1040 data[1] = ((size - 11 - 4) >> 16) & 0xff;
1041 data[2] = ((size - 11 - 4) >> 8) & 0xff;
1042 data[3] = ((size - 11 - 4) >> 0) & 0xff;
1044 /* wrap the timestamp every G_MAXINT32 miliseconds */
1045 timestamp &= 0x7fffffff;
1046 data[4] = (timestamp >> 16) & 0xff;
1047 data[5] = (timestamp >> 8) & 0xff;
1048 data[6] = (timestamp >> 0) & 0xff;
1049 data[7] = (timestamp >> 24) & 0xff;
1051 data[8] = data[9] = data[10] = 0;
1054 if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1059 data[11] |= cpad->video_codec & 0x0f;
1061 if (cpad->video_codec == 7) {
1062 data[12] = is_codec_data ? 0 : 1;
1064 /* FIXME: what to do about composition time */
1065 data[13] = data[14] = data[15] = 0;
1067 memcpy (data + 11 + 1 + 4, bdata, bsize);
1069 memcpy (data + 11 + 1, bdata, bsize);
1072 data[11] |= (cpad->audio_codec << 4) & 0xf0;
1073 data[11] |= (cpad->rate << 2) & 0x0c;
1074 data[11] |= (cpad->width << 1) & 0x02;
1075 data[11] |= (cpad->channels << 0) & 0x01;
1077 if (cpad->audio_codec == 10) {
1078 data[12] = is_codec_data ? 0 : 1;
1080 memcpy (data + 11 + 1 + 1, bdata, bsize);
1082 memcpy (data + 11 + 1, bdata, bsize);
1086 gst_buffer_unmap (buffer, &map);
1088 GST_WRITE_UINT32_BE (data + size - 4, size - 4);
1090 GST_BUFFER_TIMESTAMP (tag) = GST_BUFFER_TIMESTAMP (buffer);
1091 GST_BUFFER_DURATION (tag) = GST_BUFFER_DURATION (buffer);
1092 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET (buffer);
1093 GST_BUFFER_OFFSET_END (tag) = GST_BUFFER_OFFSET_END (buffer);
1095 /* mark the buffer if it's an audio buffer and there's also video being muxed
1096 * or it's a video interframe */
1097 if ((mux->have_video && !cpad->video) ||
1098 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT))
1099 GST_BUFFER_FLAG_SET (tag, GST_BUFFER_FLAG_DELTA_UNIT);
1101 GST_BUFFER_OFFSET (tag) = GST_BUFFER_OFFSET_END (tag) =
1102 GST_BUFFER_OFFSET_NONE;
1107 static inline GstBuffer *
1108 gst_flv_mux_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1111 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, FALSE);
1114 static inline GstBuffer *
1115 gst_flv_mux_codec_data_buffer_to_tag (GstFlvMux * mux, GstBuffer * buffer,
1118 return gst_flv_mux_buffer_to_tag_internal (mux, buffer, cpad, TRUE);
1122 gst_flv_mux_put_buffer_in_streamheader (GValue * streamheader,
1125 GValue value = { 0 };
1128 g_value_init (&value, GST_TYPE_BUFFER);
1129 buf = gst_buffer_copy (buffer);
1130 gst_value_set_buffer (&value, buf);
1131 gst_buffer_unref (buf);
1132 gst_value_array_append_value (streamheader, &value);
1133 g_value_unset (&value);
1136 static GstFlowReturn
1137 gst_flv_mux_write_header (GstFlvMux * mux)
1139 GstBuffer *header, *metadata;
1140 GstBuffer *video_codec_data, *audio_codec_data;
1142 GstStructure *structure;
1143 GValue streamheader = { 0 };
1147 /* if not streaming, check if downstream is seekable */
1148 if (!mux->streamable) {
1152 query = gst_query_new_seeking (GST_FORMAT_BYTES);
1153 if (gst_pad_peer_query (mux->srcpad, query)) {
1154 gst_query_parse_seeking (query, NULL, &seekable, NULL, NULL);
1155 GST_INFO_OBJECT (mux, "downstream is %sseekable", seekable ? "" : "not ");
1157 /* have to assume seeking is supported if query not handled downstream */
1158 GST_WARNING_OBJECT (mux, "downstream did not handle seeking query");
1162 mux->streamable = TRUE;
1163 g_object_notify (G_OBJECT (mux), "streamable");
1164 GST_WARNING_OBJECT (mux, "downstream is not seekable, but "
1165 "streamable=false. Will ignore that and create streamable output "
1168 gst_query_unref (query);
1171 header = gst_flv_mux_create_header (mux);
1172 metadata = gst_flv_mux_create_metadata (mux, TRUE);
1173 video_codec_data = NULL;
1174 audio_codec_data = NULL;
1176 for (l = mux->collect->data; l != NULL; l = l->next) {
1177 GstFlvPad *cpad = l->data;
1179 /* Get H.264 and AAC codec data, if present */
1180 if (cpad && cpad->video && cpad->video_codec == 7) {
1181 if (cpad->video_codec_data == NULL)
1182 GST_WARNING_OBJECT (mux, "Codec data for video stream not found, "
1183 "output might not be playable");
1186 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->video_codec_data,
1188 } else if (cpad && !cpad->video && cpad->audio_codec == 10) {
1189 if (cpad->audio_codec_data == NULL)
1190 GST_WARNING_OBJECT (mux, "Codec data for audio stream not found, "
1191 "output might not be playable");
1194 gst_flv_mux_codec_data_buffer_to_tag (mux, cpad->audio_codec_data,
1199 /* mark buffers that will go in the streamheader */
1200 GST_BUFFER_FLAG_SET (header, GST_BUFFER_FLAG_HEADER);
1201 GST_BUFFER_FLAG_SET (metadata, GST_BUFFER_FLAG_HEADER);
1202 if (video_codec_data != NULL) {
1203 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_HEADER);
1204 /* mark as a delta unit, so downstream will not try to synchronize on that
1205 * buffer - to actually start playback you need a real video keyframe */
1206 GST_BUFFER_FLAG_SET (video_codec_data, GST_BUFFER_FLAG_DELTA_UNIT);
1208 if (audio_codec_data != NULL) {
1209 GST_BUFFER_FLAG_SET (audio_codec_data, GST_BUFFER_FLAG_HEADER);
1212 /* put buffers in streamheader */
1213 g_value_init (&streamheader, GST_TYPE_ARRAY);
1214 gst_flv_mux_put_buffer_in_streamheader (&streamheader, header);
1215 gst_flv_mux_put_buffer_in_streamheader (&streamheader, metadata);
1216 if (video_codec_data != NULL)
1217 gst_flv_mux_put_buffer_in_streamheader (&streamheader, video_codec_data);
1218 if (audio_codec_data != NULL)
1219 gst_flv_mux_put_buffer_in_streamheader (&streamheader, audio_codec_data);
1221 /* create the caps and put the streamheader in them */
1222 caps = gst_caps_new_empty_simple ("video/x-flv");
1223 structure = gst_caps_get_structure (caps, 0);
1224 gst_structure_set_value (structure, "streamheader", &streamheader);
1225 g_value_unset (&streamheader);
1227 if (!gst_pad_has_current_caps (mux->srcpad))
1228 gst_pad_set_caps (mux->srcpad, caps);
1230 gst_caps_unref (caps);
1232 /* push the header buffer, the metadata and the codec info, if any */
1233 ret = gst_flv_mux_push (mux, header);
1234 if (ret != GST_FLOW_OK)
1236 ret = gst_flv_mux_push (mux, metadata);
1237 if (ret != GST_FLOW_OK)
1239 if (video_codec_data != NULL) {
1240 ret = gst_flv_mux_push (mux, video_codec_data);
1241 if (ret != GST_FLOW_OK)
1244 if (audio_codec_data != NULL) {
1245 ret = gst_flv_mux_push (mux, audio_codec_data);
1246 if (ret != GST_FLOW_OK)
1253 gst_flv_mux_update_index (GstFlvMux * mux, GstBuffer * buffer, GstFlvPad * cpad)
1256 * Add the tag byte offset and to the index if it's a valid seek point, which
1257 * means it's either a video keyframe or if there is no video pad (in that
1258 * case every FLV tag is a valid seek point)
1260 if (mux->have_video &&
1262 GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)))
1265 if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
1266 GstFlvMuxIndexEntry *entry = g_slice_new (GstFlvMuxIndexEntry);
1267 entry->position = mux->byte_count;
1269 gst_guint64_to_gdouble (GST_BUFFER_TIMESTAMP (buffer)) / GST_SECOND;
1270 mux->index = g_list_prepend (mux->index, entry);
1274 static GstFlowReturn
1275 gst_flv_mux_write_buffer (GstFlvMux * mux, GstFlvPad * cpad, GstBuffer * buffer)
1280 /* clipping function arranged for running_time */
1282 if (!mux->streamable)
1283 gst_flv_mux_update_index (mux, buffer, cpad);
1285 tag = gst_flv_mux_buffer_to_tag (mux, buffer, cpad);
1287 gst_buffer_unref (buffer);
1289 ret = gst_flv_mux_push (mux, tag);
1291 if (ret == GST_FLOW_OK && GST_BUFFER_TIMESTAMP_IS_VALID (tag))
1292 cpad->last_timestamp = GST_BUFFER_TIMESTAMP (tag);
1298 gst_flv_mux_determine_duration (GstFlvMux * mux)
1301 GstClockTime duration = GST_CLOCK_TIME_NONE;
1303 GST_DEBUG_OBJECT (mux, "trying to determine the duration "
1304 "from pad timestamps");
1306 for (l = mux->collect->data; l != NULL; l = l->next) {
1307 GstFlvPad *cpad = l->data;
1309 if (cpad && (cpad->last_timestamp != GST_CLOCK_TIME_NONE)) {
1310 if (duration == GST_CLOCK_TIME_NONE)
1311 duration = cpad->last_timestamp;
1313 duration = MAX (duration, cpad->last_timestamp);
1320 static GstFlowReturn
1321 gst_flv_mux_rewrite_header (GstFlvMux * mux)
1323 GstBuffer *rewrite, *index, *tmp;
1328 guint32 index_len, allocate_size;
1329 guint32 i, index_skip;
1333 if (mux->streamable)
1336 /* seek back to the preallocated index space */
1337 gst_segment_init (&segment, GST_FORMAT_BYTES);
1338 segment.start = segment.time = 13 + 29;
1339 event = gst_event_new_segment (&segment);
1340 if (!gst_pad_push_event (mux->srcpad, event)) {
1341 GST_WARNING_OBJECT (mux, "Seek to rewrite header failed");
1345 /* determine duration now based on our own timestamping,
1346 * so that it is likely many times better and consistent
1347 * than whatever obtained by some query */
1348 dur = gst_flv_mux_determine_duration (mux);
1349 if (dur != GST_CLOCK_TIME_NONE)
1350 mux->duration = dur;
1352 /* rewrite the duration tag */
1353 d = gst_guint64_to_gdouble (mux->duration);
1354 d /= (gdouble) GST_SECOND;
1356 GST_DEBUG_OBJECT (mux, "determined the final duration to be %f", d);
1358 rewrite = gst_flv_mux_create_number_script_value ("duration", d);
1360 /* rewrite the filesize tag */
1361 d = gst_guint64_to_gdouble (mux->byte_count);
1363 GST_DEBUG_OBJECT (mux, "putting total filesize %f in the metadata", d);
1365 tmp = gst_flv_mux_create_number_script_value ("filesize", d);
1366 rewrite = gst_buffer_append (rewrite, tmp);
1369 /* no index, so push buffer and return */
1370 return gst_flv_mux_push (mux, rewrite);
1373 /* rewrite the index */
1374 mux->index = g_list_reverse (mux->index);
1375 index_len = g_list_length (mux->index);
1377 /* We write at most MAX_INDEX_ENTRIES elements */
1378 if (index_len > MAX_INDEX_ENTRIES) {
1379 index_skip = 1 + index_len / MAX_INDEX_ENTRIES;
1380 index_len = (index_len + index_skip - 1) / index_skip;
1385 GST_DEBUG_OBJECT (mux, "Index length is %d", index_len);
1386 /* see size calculation in gst_flv_mux_preallocate_index */
1387 allocate_size = 11 + 8 + 22 + 10 + index_len * 18;
1388 GST_DEBUG_OBJECT (mux, "Allocating %d bytes for index", allocate_size);
1389 _gst_buffer_new_and_alloc (allocate_size, &index, &data);
1391 GST_WRITE_UINT16_BE (data, 9); /* the 'keyframes' key */
1392 memcpy (data + 2, "keyframes", 9);
1393 GST_WRITE_UINT8 (data + 11, 8); /* nested ECMA array */
1394 GST_WRITE_UINT32_BE (data + 12, 2); /* two elements */
1395 GST_WRITE_UINT16_BE (data + 16, 5); /* first string key: 'times' */
1396 memcpy (data + 18, "times", 5);
1397 GST_WRITE_UINT8 (data + 23, 10); /* strict array */
1398 GST_WRITE_UINT32_BE (data + 24, index_len);
1401 /* the keyframes' times */
1402 for (i = 0, l = mux->index; l; l = l->next, i++) {
1403 GstFlvMuxIndexEntry *entry = l->data;
1405 if (i % index_skip != 0)
1407 GST_WRITE_UINT8 (data, 0); /* numeric (aka double) */
1408 GST_WRITE_DOUBLE_BE (data + 1, entry->time);
1412 GST_WRITE_UINT16_BE (data, 13); /* second string key: 'filepositions' */
1413 memcpy (data + 2, "filepositions", 13);
1414 GST_WRITE_UINT8 (data + 15, 10); /* strict array */
1415 GST_WRITE_UINT32_BE (data + 16, index_len);
1418 /* the keyframes' file positions */
1419 for (i = 0, l = mux->index; l; l = l->next, i++) {
1420 GstFlvMuxIndexEntry *entry = l->data;
1422 if (i % index_skip != 0)
1424 GST_WRITE_UINT8 (data, 0);
1425 GST_WRITE_DOUBLE_BE (data + 1, entry->position);
1429 GST_WRITE_UINT24_BE (data, 9); /* finish the ECMA array */
1431 /* If there is space left in the prefilled area, reinsert the filler.
1432 There is at least 18 bytes free, so it will always fit. */
1433 if (index_len < MAX_INDEX_ENTRIES) {
1436 guint32 remaining_filler_size;
1438 _gst_buffer_new_and_alloc (14, &tmp, &data);
1439 GST_WRITE_UINT16_BE (data, 9);
1440 memcpy (data + 2, "gstfiller", 9);
1441 GST_WRITE_UINT8 (data + 11, 2); /* string */
1443 /* There is 18 bytes per remaining index entry minus what is used for
1444 * the'gstfiller' key. The rest is already filled with spaces, so just need
1445 * to update length. */
1446 remaining_filler_size = (MAX_INDEX_ENTRIES - index_len) * 18 - 14;
1447 GST_DEBUG_OBJECT (mux, "Remaining filler size is %d bytes",
1448 remaining_filler_size);
1449 GST_WRITE_UINT16_BE (data + 12, remaining_filler_size);
1450 index = gst_buffer_append (index, tmp);
1453 rewrite = gst_buffer_append (rewrite, index);
1455 return gst_flv_mux_push (mux, rewrite);
1458 static GstFlowReturn
1459 gst_flv_mux_handle_buffer (GstCollectPads2 * pads, GstCollectData2 * cdata,
1460 GstBuffer * buffer, gpointer user_data)
1462 GstFlvMux *mux = GST_FLV_MUX (user_data);
1464 GstClockTime best_time;
1467 if (mux->state == GST_FLV_MUX_STATE_HEADER) {
1470 if (mux->collect->data == NULL) {
1471 GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
1472 ("No input streams configured"));
1473 return GST_FLOW_ERROR;
1476 gst_segment_init (&segment, GST_FORMAT_BYTES);
1477 if (gst_pad_push_event (mux->srcpad, gst_event_new_segment (&segment)))
1478 ret = gst_flv_mux_write_header (mux);
1480 ret = GST_FLOW_ERROR;
1482 if (ret != GST_FLOW_OK)
1484 mux->state = GST_FLV_MUX_STATE_DATA;
1487 if (mux->new_tags) {
1488 GstBuffer *buf = gst_flv_mux_create_metadata (mux, FALSE);
1490 gst_flv_mux_push (mux, buf);
1491 mux->new_tags = FALSE;
1494 best = (GstFlvPad *) cdata;
1497 best_time = GST_BUFFER_TIMESTAMP (buffer);
1499 best_time = GST_CLOCK_TIME_NONE;
1502 /* The FLV timestamp is an int32 field. For non-live streams error out if a
1503 bigger timestamp is seen, for live the timestamp will get wrapped in
1504 gst_flv_mux_buffer_to_tag */
1505 if (!mux->streamable && GST_CLOCK_TIME_IS_VALID (best_time)
1506 && best_time / GST_MSECOND > G_MAXINT32) {
1507 GST_WARNING_OBJECT (mux, "Timestamp larger than FLV supports - EOS");
1508 gst_buffer_unref (buffer);
1514 return gst_flv_mux_write_buffer (mux, best, buffer);
1516 gst_flv_mux_rewrite_header (mux);
1517 gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
1518 return GST_FLOW_EOS;
1523 gst_flv_mux_get_property (GObject * object,
1524 guint prop_id, GValue * value, GParamSpec * pspec)
1526 GstFlvMux *mux = GST_FLV_MUX (object);
1529 case PROP_STREAMABLE:
1530 g_value_set_boolean (value, mux->streamable);
1533 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1539 gst_flv_mux_set_property (GObject * object,
1540 guint prop_id, const GValue * value, GParamSpec * pspec)
1542 GstFlvMux *mux = GST_FLV_MUX (object);
1545 case PROP_STREAMABLE:
1546 mux->streamable = g_value_get_boolean (value);
1547 if (mux->streamable)
1548 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1549 GST_TAG_MERGE_REPLACE);
1551 gst_tag_setter_set_tag_merge_mode (GST_TAG_SETTER (mux),
1552 GST_TAG_MERGE_KEEP);
1555 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1560 static GstStateChangeReturn
1561 gst_flv_mux_change_state (GstElement * element, GstStateChange transition)
1563 GstStateChangeReturn ret;
1564 GstFlvMux *mux = GST_FLV_MUX (element);
1566 switch (transition) {
1567 case GST_STATE_CHANGE_NULL_TO_READY:
1569 case GST_STATE_CHANGE_READY_TO_PAUSED:
1570 gst_collect_pads2_start (mux->collect);
1572 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1574 case GST_STATE_CHANGE_PAUSED_TO_READY:
1575 gst_collect_pads2_stop (mux->collect);
1581 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1583 switch (transition) {
1584 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1586 case GST_STATE_CHANGE_PAUSED_TO_READY:
1587 gst_flv_mux_reset (GST_ELEMENT (mux));
1589 case GST_STATE_CHANGE_READY_TO_NULL: