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matroskamux: store and write stream tags

Browse source 
Separate global from stream tags storage and write them to the
appropriate tags entry in the output
This commit is contained in:
Thiago Santos 2015-02-02 19:46:27 -03:00
parent 75dee31b0d
commit 7772a25fdc
3 changed files with 96 additions and 13 deletions
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1
gst/matroska/matroska-ids.h
View file

@ -507,6 +507,7 @@ struct _GstMatroskaTrackContext {
gint index_writer_id;
/* some often-used info */
guint64 track_uid;
gchar *codec_id, *codec_name, *name, *language;
gpointer codec_priv;
gsize codec_priv_size;

98
gst/matroska/matroska-mux.c
View file

@ -246,6 +246,8 @@ static gboolean flac_streamheader_to_codecdata (const GValue * streamheader,
static void
gst_matroska_mux_write_simple_tag (const GstTagList * list, const gchar * tag,
gpointer data);
static void gst_matroska_mux_write_streams_tags (GstMatroskaMux * mux);
static gboolean gst_matroska_mux_streams_have_tags (GstMatroskaMux * mux);
/* Cannot use boilerplate macros here because we need the full init function
* signature with the additional class argument, so we use the right template
@ -560,6 +562,10 @@ gst_matroska_pad_reset (GstMatroskaPad * collect_pad, gboolean full)
g_free (collect_pad->track->codec_priv);
g_free (collect_pad->track);
collect_pad->track = NULL;
if (collect_pad->tags) {
gst_tag_list_unref (collect_pad->tags);
collect_pad->tags = NULL;
}
}
if (!full && type != 0) {
@ -586,12 +592,15 @@ gst_matroska_pad_reset (GstMatroskaPad * collect_pad, gboolean full)
context->type = type;
context->name = name;
context->track_uid = gst_matroska_mux_create_uid (collect_pad->mux);
/* TODO: check default values for the context */
context->flags = GST_MATROSKA_TRACK_ENABLED | GST_MATROSKA_TRACK_DEFAULT;
collect_pad->track = context;
collect_pad->duration = 0;
collect_pad->start_ts = GST_CLOCK_TIME_NONE;
collect_pad->end_ts = GST_CLOCK_TIME_NONE;
collect_pad->tags = gst_tag_list_new_empty ();
gst_tag_list_set_scope (collect_pad->tags, GST_TAG_SCOPE_STREAM);
}
}
@ -806,8 +815,12 @@ gst_matroska_mux_handle_sink_event (GstCollectPads * pads,
}
/* FIXME: what about stream-specific tags? */
gst_tag_setter_merge_tags (GST_TAG_SETTER (mux), list,
gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (mux)));
if (gst_tag_list_get_scope (list) == GST_TAG_SCOPE_GLOBAL) {
gst_tag_setter_merge_tags (GST_TAG_SETTER (mux), list,
gst_tag_setter_get_tag_merge_mode (GST_TAG_SETTER (mux)));
} else {
gst_tag_list_insert (collect_pad->tags, list, GST_TAG_MERGE_REPLACE);
}
gst_event_unref (event);
/* handled this, don't want collectpads to forward it downstream */
@ -2281,6 +2294,7 @@ gst_matroska_mux_request_new_pad (GstElement * element,
sizeof (GstMatroskamuxPad),
(GstCollectDataDestroyNotify) gst_matroska_pad_free, locked);
collect_pad->mux = mux;
collect_pad->track = context;
gst_matroska_pad_reset (collect_pad, FALSE);
collect_pad->track->codec_id = id;
@ -2371,8 +2385,7 @@ gst_matroska_mux_track_header (GstMatroskaMux * mux,
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKNUMBER, context->num);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKTYPE, context->type);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKUID,
gst_matroska_mux_create_uid (mux));
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKUID, context->track_uid);
if (context->default_duration) {
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKDEFAULTDURATION,
context->default_duration);
@ -2659,21 +2672,25 @@ gst_matroska_mux_start (GstMatroskaMux * mux)
if (mux->streamable) {
const GstTagList *tags;
gboolean has_main_tags;
/* tags */
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
has_main_tags = tags != NULL && !gst_tag_list_is_empty (tags);
if (tags != NULL && !gst_tag_list_is_empty (tags)) {
if (has_main_tags || gst_matroska_mux_streams_have_tags (mux)) {
guint64 master_tags, master_tag;
GST_DEBUG_OBJECT (mux, "Writing tags");
/* TODO: maybe limit via the TARGETS id by looking at the source pad */
mux->tags_pos = ebml->pos;
master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
gst_tag_list_foreach (tags, gst_matroska_mux_write_simple_tag, ebml);
gst_ebml_write_master_finish (ebml, master_tag);
if (has_main_tags) {
master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
gst_tag_list_foreach (tags, gst_matroska_mux_write_simple_tag, ebml);
gst_ebml_write_master_finish (ebml, master_tag);
}
gst_matroska_mux_write_streams_tags (mux);
gst_ebml_write_master_finish (ebml, master_tags);
}
}
@ -2885,6 +2902,57 @@ gst_matroska_mux_write_simple_tag (const GstTagList * list, const gchar * tag,
}
}
static void
gst_matroska_mux_write_stream_tags (GstMatroskaMux * mux, GstMatroskaPad * mpad)
{
guint64 master_tag, master_targets;
GstEbmlWrite *ebml;
ebml = mux->ebml_write;
if (G_UNLIKELY (mpad->tags == NULL || gst_tag_list_is_empty (mpad->tags)))
return;
master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
master_targets = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TARGETS);
gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TARGETTRACKUID,
mpad->track->track_uid);
gst_ebml_write_master_finish (ebml, master_targets);
gst_tag_list_foreach (mpad->tags, gst_matroska_mux_write_simple_tag, ebml);
gst_ebml_write_master_finish (ebml, master_tag);
}
static void
gst_matroska_mux_write_streams_tags (GstMatroskaMux * mux)
{
GSList *walk;
for (walk = mux->collect->data; walk; walk = g_slist_next (walk)) {
GstMatroskaPad *collect_pad;
collect_pad = (GstMatroskaPad *) walk->data;
gst_matroska_mux_write_stream_tags (mux, collect_pad);
}
}
static gboolean
gst_matroska_mux_streams_have_tags (GstMatroskaMux * mux)
{
GSList *walk;
for (walk = mux->collect->data; walk; walk = g_slist_next (walk)) {
GstMatroskaPad *collect_pad;
collect_pad = (GstMatroskaPad *) walk->data;
if (!gst_tag_list_is_empty (collect_pad->tags))
return TRUE;
}
return FALSE;
}
#if 0
static void
gst_matroska_mux_write_toc_entry_tags (GstMatroskaMux * mux,
@ -2940,6 +3008,7 @@ gst_matroska_mux_finish (GstMatroskaMux * mux)
guint64 duration = 0;
GSList *collected;
const GstTagList *tags;
gboolean has_main_tags;
/* finish last cluster */
if (mux->cluster) {
@ -2977,8 +3046,9 @@ gst_matroska_mux_finish (GstMatroskaMux * mux)
/* tags */
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
has_main_tags = tags != NULL && !gst_tag_list_is_empty (tags);
if ((tags != NULL && !gst_tag_list_is_empty (tags))
if (has_main_tags || gst_matroska_mux_streams_have_tags (mux)
|| gst_toc_setter_get_toc (GST_TOC_SETTER (mux)) != NULL) {
guint64 master_tags = 0, master_tag;
#if 0
@ -2991,7 +3061,7 @@ gst_matroska_mux_finish (GstMatroskaMux * mux)
toc = gst_toc_setter_get_toc (GST_TOC_SETTER (mux));
#endif
if (tags != NULL) {
if (has_main_tags) {
/* TODO: maybe limit via the TARGETS id by looking at the source pad */
mux->tags_pos = ebml->pos;
master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
@ -3017,6 +3087,12 @@ gst_matroska_mux_finish (GstMatroskaMux * mux)
}
#endif
if (master_tags == 0 && gst_matroska_mux_streams_have_tags (mux)) {
mux->tags_pos = ebml->pos;
master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
}
gst_matroska_mux_write_streams_tags (mux);
if (master_tags != 0)
gst_ebml_write_master_finish (ebml, master_tags);
}

10
gst/matroska/matroska-mux.h
View file

@ -55,6 +55,8 @@ typedef struct _GstMatroskaMetaSeekIndex {
typedef gboolean (*GstMatroskaCapsFunc) (GstPad *pad, GstCaps *caps);
typedef struct _GstMatroskaMux GstMatroskaMux;
/* all information needed for one matroska stream */
typedef struct
{
@ -62,6 +64,10 @@ typedef struct
GstMatroskaCapsFunc capsfunc;
GstMatroskaTrackContext *track;
GstMatroskaMux *mux;
GstTagList *tags;
guint64 duration;
GstClockTime start_ts;
GstClockTime end_ts; /* last timestamp + (if available) duration */
@ -70,7 +76,7 @@ typedef struct
GstMatroskaPad;
typedef struct _GstMatroskaMux {
struct _GstMatroskaMux {
GstElement element;
/* < private > */
@ -135,7 +141,7 @@ typedef struct _GstMatroskaMux {
/* used uids */
GArray *used_uids;
} GstMatroskaMux;
};
typedef struct _GstMatroskaMuxClass {
GstElementClass parent;