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-rw-r--r--gst/flv/gstflvmux.c233
-rw-r--r--gst/flv/gstflvmux.h2
2 files changed, 227 insertions, 8 deletions
diff --git a/gst/flv/gstflvmux.c b/gst/flv/gstflvmux.c
index c1bd1205..1b717ed7 100644
--- a/gst/flv/gstflvmux.c
+++ b/gst/flv/gstflvmux.c
@@ -31,10 +31,6 @@
* </refsect2>
*/
-/* TODO:
- * - Write metadata for the file, see FLV spec page 13
- */
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@@ -76,7 +72,19 @@ static GstStaticPadTemplate audiosink_templ = GST_STATIC_PAD_TEMPLATE ("audio",
"audio/x-speex, channels = (int) { 1, 2 }, rate = (int) { 5512, 11025, 22050, 44100 };")
);
-GST_BOILERPLATE (GstFlvMux, gst_flv_mux, GstElement, GST_TYPE_ELEMENT);
+#define _do_init(type) \
+ G_STMT_START{ \
+ static const GInterfaceInfo tag_setter_info = { \
+ NULL, \
+ NULL, \
+ NULL \
+ }; \
+ g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, \
+ &tag_setter_info); \
+ }G_STMT_END
+
+GST_BOILERPLATE_FULL (GstFlvMux, gst_flv_mux, GstElement, GST_TYPE_ELEMENT,
+ _do_init);
static void gst_flv_mux_finalize (GObject * object);
static GstFlowReturn
@@ -171,6 +179,10 @@ gst_flv_mux_reset (GstElement * element)
gst_collect_pads_remove_pad (mux->collect, cpad->collect.pad);
}
+ if (mux->tags)
+ gst_tag_list_free (mux->tags);
+ mux->tags = NULL;
+
mux->state = GST_FLV_MUX_STATE_HEADER;
}
@@ -199,9 +211,20 @@ gst_flv_mux_handle_sink_event (GstPad * pad, GstEvent * event)
gboolean ret = TRUE;
switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_TAG:
- /* TODO do something with the tags */
+ case GST_EVENT_TAG:{
+ GstTagList *tags;
+
+ if (!mux->tags)
+ mux->tags = gst_tag_list_new ();
+
+ gst_event_parse_tag (event, &tags);
+ if (tags) {
+ gst_tag_list_insert (mux->tags, tags,
+ gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (mux)));
+ }
+
break;
+ }
case GST_EVENT_NEWSEGMENT:
/* We don't support NEWSEGMENT events */
ret = FALSE;
@@ -505,10 +528,200 @@ gst_flv_mux_release_pad (GstElement * element, GstPad * pad)
}
static GstFlowReturn
+gst_flv_mux_write_metadata (GstFlvMux * mux)
+{
+ GstTagList *merged_tags;
+ const GstTagList *user_tags;
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstBuffer *script_tag, *tmp;
+ guint8 *data;
+ gint i, n_tags, tags_written = 0;
+
+ user_tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
+ GST_DEBUG_OBJECT (mux, "upstream tags = %" GST_PTR_FORMAT, mux->tags);
+ GST_DEBUG_OBJECT (mux, "user-set tags = %" GST_PTR_FORMAT, user_tags);
+
+ merged_tags = gst_tag_list_merge (user_tags, mux->tags,
+ gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (mux)));
+
+ if (!merged_tags) {
+ GST_DEBUG_OBJECT (mux, "No tags to write");
+ return GST_FLOW_OK;
+ }
+
+ GST_DEBUG_OBJECT (mux, "merged tags = %" GST_PTR_FORMAT, merged_tags);
+
+ script_tag = gst_buffer_new_and_alloc (11);
+ data = GST_BUFFER_DATA (script_tag);
+
+ data[0] = 18;
+
+ /* Data size, unknown for now */
+ data[1] = 0;
+ data[2] = 0;
+ data[3] = 0;
+
+ /* Timestamp */
+ data[4] = data[5] = data[6] = data[7] = 0;
+
+ /* Stream ID */
+ data[8] = data[9] = data[10] = 0;
+
+ tmp = gst_buffer_new_and_alloc (13);
+ data = GST_BUFFER_DATA (tmp);
+ data[0] = 2; /* string */
+ data[1] = 0;
+ data[2] = 0x0a; /* length 10 */
+ memcpy (&data[3], "onMetaData", sizeof ("onMetaData"));
+
+ script_tag = gst_buffer_join (script_tag, tmp);
+
+ n_tags = gst_structure_n_fields ((GstStructure *) merged_tags);
+ tmp = gst_buffer_new_and_alloc (5);
+ data = GST_BUFFER_DATA (tmp);
+ data[0] = 8; /* ECMA array */
+ GST_WRITE_UINT32_BE (data + 1, n_tags);
+ script_tag = gst_buffer_join (script_tag, tmp);
+
+ for (i = 0; i < n_tags; i++) {
+ const gchar *tag_name =
+ gst_structure_nth_field_name ((const GstStructure *) merged_tags, i);
+ if (!strcmp (tag_name, GST_TAG_DURATION)) {
+ gdouble d;
+ guint64 dur;
+
+ if (!gst_tag_list_get_uint64 (merged_tags, GST_TAG_DURATION, &dur))
+ continue;
+
+ d = gst_guint64_to_gdouble (dur);
+ d /= (gdouble) GST_SECOND;
+
+ tmp = gst_buffer_new_and_alloc (2 + 8 + 1 + 8);
+ data = GST_BUFFER_DATA (tmp);
+ data[0] = 0; /* 8 bytes name */
+ data[1] = 8;
+ memcpy (&data[2], "duration", sizeof ("duration"));
+ data[10] = 0; /* double */
+ GST_WRITE_DOUBLE_BE (data + 11, d);
+ script_tag = gst_buffer_join (script_tag, tmp);
+ tags_written++;
+ } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
+ !strcmp (tag_name, GST_TAG_TITLE)) {
+ gchar *s;
+ const gchar *t;
+
+ if (!strcmp (tag_name, GST_TAG_ARTIST))
+ t = "creator";
+ else if (!strcmp (tag_name, GST_TAG_TITLE))
+ t = "title";
+
+ if (!gst_tag_list_get_string (merged_tags, tag_name, &s))
+ continue;
+
+ tmp = gst_buffer_new_and_alloc (2 + strlen (t) + 1 + 2 + strlen (s));
+ data = GST_BUFFER_DATA (tmp);
+ data[0] = 0; /* tag name length */
+ data[1] = strlen (t);
+ memcpy (&data[2], t, strlen (t));
+ data[2 + strlen (t)] = 2; /* string */
+ data[3 + strlen (t)] = (strlen (s) >> 8) & 0xff;
+ data[4 + strlen (t)] = (strlen (s)) & 0xff;
+ memcpy (&data[5 + strlen (t)], s, strlen (s));
+ script_tag = gst_buffer_join (script_tag, tmp);
+
+ g_free (s);
+ tags_written++;
+ }
+ }
+
+ {
+ const gchar *s = "GStreamer FLV muxer";
+
+ tmp = gst_buffer_new_and_alloc (2 + 15 + 1 + 2 + strlen (s));
+ data = GST_BUFFER_DATA (tmp);
+ data[0] = 0; /* 15 bytes name */
+ data[1] = 15;
+ memcpy (&data[2], "metadatacreator", sizeof ("metadatacreator"));
+ data[17] = 2; /* string */
+ data[18] = (strlen (s) >> 8) & 0xff;
+ data[19] = (strlen (s)) & 0xff;
+ memcpy (&data[20], s, strlen (s));
+ script_tag = gst_buffer_join (script_tag, tmp);
+
+ tags_written++;
+ }
+
+ {
+ GTimeVal tv = { 0, };
+ time_t secs;
+ struct tm *tm;
+ gchar *s;
+ static const gchar *weekdays[] = {
+ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+ };
+ static const gchar *months[] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
+ "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+
+ g_get_current_time (&tv);
+ secs = tv.tv_sec;
+ tm = gmtime (&secs);
+
+ s = g_strdup_printf ("%s %s %d %d:%d:%d %d", weekdays[tm->tm_wday],
+ months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec,
+ tm->tm_year + 1900);
+
+ tmp = gst_buffer_new_and_alloc (2 + 12 + 1 + 2 + strlen (s));
+ data = GST_BUFFER_DATA (tmp);
+ data[0] = 0; /* 12 bytes name */
+ data[1] = 12;
+ memcpy (&data[2], "creationdate", sizeof ("creationdate"));
+ data[14] = 2; /* string */
+ data[15] = (strlen (s) >> 8) & 0xff;
+ data[16] = (strlen (s)) & 0xff;
+ memcpy (&data[17], s, strlen (s));
+ script_tag = gst_buffer_join (script_tag, tmp);
+
+ g_free (s);
+ tags_written++;
+ }
+
+ tmp = gst_buffer_new_and_alloc (2 + 0 + 1);
+ data = GST_BUFFER_DATA (tmp);
+ data[0] = 0; /* 0 byte size */
+ data[1] = 0;
+ data[2] = 9; /* end marker */
+ script_tag = gst_buffer_join (script_tag, tmp);
+ tags_written++;
+
+
+ tmp = gst_buffer_new_and_alloc (4);
+ data = GST_BUFFER_DATA (tmp);
+ GST_WRITE_UINT32_BE (data, GST_BUFFER_SIZE (script_tag));
+ script_tag = gst_buffer_join (script_tag, tmp);
+
+ data = GST_BUFFER_DATA (script_tag);
+ data[1] = ((GST_BUFFER_SIZE (script_tag) - 11 - 4) >> 16) & 0xff;
+ data[2] = ((GST_BUFFER_SIZE (script_tag) - 11 - 4) >> 8) & 0xff;
+ data[3] = ((GST_BUFFER_SIZE (script_tag) - 11 - 4) >> 0) & 0xff;
+
+ GST_WRITE_UINT32_BE (data + 11 + 13 + 1, tags_written);
+
+ gst_buffer_set_caps (script_tag, GST_PAD_CAPS (mux->srcpad));
+ ret = gst_pad_push (mux->srcpad, script_tag);
+
+ gst_tag_list_free (merged_tags);
+
+ return ret;
+}
+
+static GstFlowReturn
gst_flv_mux_write_header (GstFlvMux * mux)
{
GstBuffer *header = gst_buffer_new_and_alloc (9 + 4);
guint8 *data = GST_BUFFER_DATA (header);
+ GstFlowReturn ret;
if (GST_PAD_CAPS (mux->srcpad) == NULL) {
GstCaps *caps = gst_caps_new_simple ("video/x-flv", NULL);
@@ -528,7 +741,11 @@ gst_flv_mux_write_header (GstFlvMux * mux)
GST_WRITE_UINT32_BE (data + 9, 0); /* previous tag size */
- return gst_pad_push (mux->srcpad, header);
+ ret = gst_pad_push (mux->srcpad, header);
+ if (ret != GST_FLOW_OK)
+ return ret;
+
+ return gst_flv_mux_write_metadata (mux);
}
static GstFlowReturn
diff --git a/gst/flv/gstflvmux.h b/gst/flv/gstflvmux.h
index 3d634a4c..02df089d 100644
--- a/gst/flv/gstflvmux.h
+++ b/gst/flv/gstflvmux.h
@@ -74,6 +74,8 @@ typedef struct _GstFlvMux {
GstFlvMuxState state;
gboolean have_audio;
gboolean have_video;
+
+ GstTagList *tags;
} GstFlvMux;
typedef struct _GstFlvMuxClass {
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-04 05:55:20 +0000