Commit 7c402d58 authored by Zaheer Abbas Merali's avatar Zaheer Abbas Merali

matroskamux: add streamheaders

parent d0bf3108
......@@ -62,6 +62,9 @@ gst_ebml_write_init (GstEbmlWrite * ebml, GstEbmlWriteClass * klass)
ebml->pos = 0;
ebml->cache = NULL;
ebml->streamheader = NULL;
ebml->streamheader_pos = 0;
ebml->writing_streamheader = FALSE;
}
static void
......@@ -76,6 +79,11 @@ gst_ebml_write_finalize (GObject * object)
ebml->cache = NULL;
}
if (ebml->streamheader) {
gst_byte_writer_free (ebml->streamheader);
ebml->streamheader = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
}
......@@ -142,6 +150,33 @@ gst_ebml_last_write_result (GstEbmlWrite * ebml)
}
void
gst_ebml_start_streamheader (GstEbmlWrite * ebml)
{
g_return_if_fail (ebml->streamheader == NULL);
GST_DEBUG ("Starting streamheader at %" G_GUINT64_FORMAT, ebml->pos);
ebml->streamheader = gst_byte_writer_new_with_size (1000, FALSE);
ebml->streamheader_pos = ebml->pos;
ebml->writing_streamheader = TRUE;
}
GstBuffer *
gst_ebml_stop_streamheader (GstEbmlWrite * ebml)
{
GstBuffer *buffer;
if (!ebml->streamheader)
return NULL;
buffer = gst_byte_writer_free_and_get_buffer (ebml->streamheader);
ebml->streamheader = NULL;
GST_DEBUG ("Streamheader was size %d", GST_BUFFER_SIZE (buffer));
ebml->writing_streamheader = FALSE;
return buffer;
}
/**
* gst_ebml_write_set_cache:
* @ebml: a #GstEbmlWrite.
......@@ -336,6 +371,10 @@ gst_ebml_write_element_push (GstEbmlWrite * ebml, GstBuffer * buf)
ebml->pos += data_size;
/* if there's no cache, then don't push it! */
if (ebml->writing_streamheader) {
gst_byte_writer_put_data (ebml->streamheader, GST_BUFFER_DATA (buf),
data_size);
}
if (ebml->cache) {
gst_byte_writer_put_data (ebml->cache, GST_BUFFER_DATA (buf), data_size);
gst_buffer_unref (buf);
......@@ -371,6 +410,19 @@ gst_ebml_write_seek (GstEbmlWrite * ebml, guint64 pos)
{
GstEvent *event;
if (ebml->writing_streamheader) {
GST_DEBUG ("wanting to seek to pos %" G_GUINT64_FORMAT, pos);
if (pos >= ebml->streamheader_pos &&
pos <= ebml->streamheader_pos + ebml->streamheader->parent.size) {
gst_byte_writer_set_pos (ebml->streamheader,
pos - ebml->streamheader_pos);
GST_DEBUG ("seeked in streamheader to position %" G_GUINT64_FORMAT,
pos - ebml->streamheader_pos);
} else {
GST_WARNING
("we are writing streamheader still and seek is out of bounds");
}
}
/* Cache seeking. A bit dangerous, we assume the client writer
* knows what he's doing... */
if (ebml->cache) {
......
......@@ -55,6 +55,10 @@ typedef struct _GstEbmlWrite {
GstFlowReturn last_write_result;
gboolean need_newsegment;
gboolean writing_streamheader;
GstByteWriter *streamheader;
guint64 streamheader_pos;
} GstEbmlWrite;
typedef struct _GstEbmlWriteClass {
......@@ -68,6 +72,10 @@ void gst_ebml_write_reset (GstEbmlWrite *ebml);
GstFlowReturn gst_ebml_last_write_result (GstEbmlWrite *ebml);
/* Used to create streamheaders */
void gst_ebml_start_streamheader (GstEbmlWrite *ebml);
GstBuffer* gst_ebml_stop_streamheader (GstEbmlWrite *ebml);
/*
* Caching means that we do not push one buffer for
* each element, but fill this one until a flush.
......
......@@ -2005,11 +2005,13 @@ gst_matroska_mux_start (GstMatroskaMux * mux)
GstClockTime duration = 0;
guint32 segment_uid[4];
GTimeVal time = { 0, 0 };
GstBuffer *streamheader_buffer;
/* we start with a EBML header */
doctype = mux->doctype;
GST_INFO_OBJECT (ebml, "DocType: %s, Version: %d",
doctype, mux->doctype_version);
gst_ebml_start_streamheader (ebml);
gst_ebml_write_header (ebml, doctype, mux->doctype_version);
/* the rest of the header is cached */
......@@ -2044,30 +2046,31 @@ gst_matroska_mux_start (GstMatroskaMux * mux)
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TIMECODESCALE, mux->time_scale);
mux->duration_pos = ebml->pos;
/* get duration */
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
GstFormat format = GST_FORMAT_TIME;
GstPad *thepad;
gint64 trackduration;
collect_pad = (GstMatroskaPad *) collected->data;
thepad = collect_pad->collect.pad;
if (!mux->is_live) {
for (collected = mux->collect->data; collected;
collected = g_slist_next (collected)) {
GstMatroskaPad *collect_pad;
GstFormat format = GST_FORMAT_TIME;
GstPad *thepad;
gint64 trackduration;
/* Query the total length of the track. */
GST_DEBUG_OBJECT (thepad, "querying peer duration");
if (gst_pad_query_peer_duration (thepad, &format, &trackduration)) {
GST_DEBUG_OBJECT (thepad, "duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (trackduration));
if (trackduration != GST_CLOCK_TIME_NONE && trackduration > duration) {
duration = (GstClockTime) trackduration;
collect_pad = (GstMatroskaPad *) collected->data;
thepad = collect_pad->collect.pad;
/* Query the total length of the track. */
GST_DEBUG_OBJECT (thepad, "querying peer duration");
if (gst_pad_query_peer_duration (thepad, &format, &trackduration)) {
GST_DEBUG_OBJECT (thepad, "duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (trackduration));
if (trackduration != GST_CLOCK_TIME_NONE && trackduration > duration) {
duration = (GstClockTime) trackduration;
}
}
}
gst_ebml_write_float (ebml, GST_MATROSKA_ID_DURATION,
gst_guint64_to_gdouble (duration) /
gst_guint64_to_gdouble (mux->time_scale));
}
gst_ebml_write_float (ebml, GST_MATROSKA_ID_DURATION,
gst_guint64_to_gdouble (duration) /
gst_guint64_to_gdouble (mux->time_scale));
gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_MUXINGAPP,
"GStreamer plugin version " PACKAGE_VERSION);
if (mux->writing_app && mux->writing_app[0]) {
......@@ -2101,6 +2104,29 @@ gst_matroska_mux_start (GstMatroskaMux * mux)
/* lastly, flush the cache */
gst_ebml_write_flush_cache (ebml);
streamheader_buffer = gst_ebml_stop_streamheader (ebml);
/* lets set the pad caps, which is how the buffer caps is set currently :( */
{
GstCaps *caps;
GstStructure *s;
GValue streamheader = { 0 };
GValue bufval = { 0 };
if (!strcmp (mux->doctype, GST_MATROSKA_DOCTYPE_WEBM)) {
caps = gst_caps_from_string ("video/webm");
} else {
caps = gst_caps_from_string ("video/x-matroska");
}
s = gst_caps_get_structure (caps, 0);
g_value_init (&streamheader, GST_TYPE_ARRAY);
g_value_init (&bufval, GST_TYPE_BUFFER);
gst_value_set_buffer (&bufval, streamheader_buffer);
gst_value_array_append_value (&streamheader, &bufval);
g_value_unset (&bufval);
gst_structure_set_value (s, "streamheader", &streamheader);
g_value_unset (&streamheader);
gst_pad_set_caps (mux->srcpad, caps);
gst_caps_unref (caps);
}
}
static void
......
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