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gst/matroska/matroska-mux.*: Add basic tag writing support; implement releasing pads (#374658).
Original commit message from CVS: Patch by: Mark Nauwelaerts <manauw at skynet be> * gst/matroska/matroska-mux.c: (gst_matroska_mux_add_interfaces), (gst_matroska_mux_class_init), (gst_matroska_pad_free), (gst_matroska_mux_reset), (gst_matroska_mux_handle_sink_event), (gst_matroska_mux_request_new_pad), (gst_matroska_mux_release_pad), (gst_matroska_mux_track_header), (gst_matroska_mux_start), (gst_matroska_mux_write_simple_tag), (gst_matroska_mux_finish): * gst/matroska/matroska-mux.h: Add basic tag writing support; implement releasing pads (#374658).
This commit is contained in:
Mark Nauwelaerts
Tim-Philipp Müller
parent
f5dda5f00b
commit
5c446dc4f5
13
ChangeLog
13
ChangeLog
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@ -1,3 +1,16 @@
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2006-11-15 Tim-Philipp Müller <tim at centricular dot net>
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Patch by: Mark Nauwelaerts <manauw at skynet be>
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* gst/matroska/matroska-mux.c: (gst_matroska_mux_add_interfaces),
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(gst_matroska_mux_class_init), (gst_matroska_pad_free),
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(gst_matroska_mux_reset), (gst_matroska_mux_handle_sink_event),
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(gst_matroska_mux_request_new_pad), (gst_matroska_mux_release_pad),
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(gst_matroska_mux_track_header), (gst_matroska_mux_start),
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(gst_matroska_mux_write_simple_tag), (gst_matroska_mux_finish):
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* gst/matroska/matroska-mux.h:
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Add basic tag writing support; implement releasing pads (#374658).
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2006-11-15 Tim-Philipp Müller <tim at centricular dot net>
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* gst/matroska/matroska-demux.c: (gst_matroska_demux_add_stream),
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@ -123,8 +123,10 @@ GST_STATIC_PAD_TEMPLATE ("subtitle_%d",
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static GArray *used_uids;
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GST_BOILERPLATE (GstMatroskaMux, gst_matroska_mux, GstElement,
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GST_TYPE_ELEMENT);
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static void gst_matroska_mux_add_interfaces (GType type);
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GST_BOILERPLATE_FULL (GstMatroskaMux, gst_matroska_mux, GstElement,
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GST_TYPE_ELEMENT, gst_matroska_mux_add_interfaces);
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/* Matroska muxer destructor */
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static void gst_matroska_mux_finalize (GObject * object);
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@ -138,6 +140,7 @@ static gboolean gst_matroska_mux_handle_src_event (GstPad * pad,
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GstEvent * event);
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static GstPad *gst_matroska_mux_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * name);
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static void gst_matroska_mux_release_pad (GstElement * element, GstPad * pad);
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/* gst internal change state handler */
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static GstStateChangeReturn
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@ -160,6 +163,14 @@ static gboolean theora_streamheader_to_codecdata (const GValue * streamheader,
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static gboolean vorbis_streamheader_to_codecdata (const GValue * streamheader,
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GstMatroskaTrackContext * context);
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static void
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gst_matroska_mux_add_interfaces (GType type)
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{
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static const GInterfaceInfo tag_setter_info = { NULL, NULL, NULL };
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g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
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}
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static void
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gst_matroska_mux_base_init (gpointer g_class)
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{
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@ -209,6 +220,7 @@ gst_matroska_mux_class_init (GstMatroskaMuxClass * klass)
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gstelement_class->change_state = gst_matroska_mux_change_state;
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gstelement_class->request_new_pad = gst_matroska_mux_request_new_pad;
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gstelement_class->release_pad = gst_matroska_mux_release_pad;
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}
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@ -295,6 +307,33 @@ gst_matroska_mux_create_uid (void)
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return uid;
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}
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/**
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* gst_matroska_pad_free:
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* @collect_pad: the #GstMatroskaPad
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*
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* Release resources of a matroska collect pad.
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*/
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static void
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gst_matroska_pad_free (GstMatroskaPad * collect_pad)
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{
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/* free track information */
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if (collect_pad->track != NULL) {
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g_free (collect_pad->track->codec_id);
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g_free (collect_pad->track->codec_name);
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g_free (collect_pad->track->name);
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g_free (collect_pad->track->language);
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g_free (collect_pad->track->codec_priv);
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g_free (collect_pad->track);
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collect_pad->track = NULL;
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}
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/* free cached buffer */
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if (collect_pad->buffer != NULL) {
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gst_buffer_unref (collect_pad->buffer);
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collect_pad->buffer = NULL;
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}
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}
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/**
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* gst_matroska_mux_reset:
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@ -322,22 +361,8 @@ gst_matroska_mux_reset (GstElement * element)
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collect_pad = (GstMatroskaPad *) walk->data;
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thepad = collect_pad->collect.pad;
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/* free track information */
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if (collect_pad->track != NULL) {
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g_free (collect_pad->track->codec_id);
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g_free (collect_pad->track->codec_name);
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g_free (collect_pad->track->name);
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g_free (collect_pad->track->language);
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g_free (collect_pad->track->codec_priv);
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g_free (collect_pad->track);
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collect_pad->track = NULL;
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}
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/* free cached buffer */
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if (collect_pad->buffer != NULL) {
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gst_buffer_unref (collect_pad->buffer);
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collect_pad->buffer = NULL;
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}
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/* free collect pad resources */
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gst_matroska_pad_free (collect_pad);
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/* remove from collectpads */
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gst_collect_pads_remove_pad (mux->collect, thepad);
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@ -378,6 +403,12 @@ gst_matroska_mux_reset (GstElement * element)
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mux->num_meta_indexes = 0;
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g_free (mux->meta_index);
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mux->meta_index = NULL;
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/* reset tags */
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if (mux->tags) {
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gst_tag_list_free (mux->tags);
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mux->tags = NULL;
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}
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}
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/**
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@ -407,6 +438,56 @@ gst_matroska_mux_handle_src_event (GstPad * pad, GstEvent * event)
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return gst_pad_event_default (pad, event);
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}
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/**
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* gst_matroska_mux_handle_sink_event:
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* @pad: Pad which received the event.
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* @event: Received event.
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*
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* handle events - informational ones like tags
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*
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* Returns: #TRUE on success.
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*/
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static gboolean
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gst_matroska_mux_handle_sink_event (GstPad * pad, GstEvent * event)
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{
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GstMatroskaTrackContext *context;
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GstMatroskaPad *collect_pad;
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GstMatroskaMux *mux;
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GstTagList *list;
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gboolean ret;
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mux = GST_MATROSKA_MUX (gst_pad_get_parent (pad));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_TAG:
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gst_event_parse_tag (event, &list);
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collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
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g_assert (collect_pad);
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context = collect_pad->track;
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g_assert (context);
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/* FIXME ?
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* strictly speaking, the incoming language code may only be 639-1, so not
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* 639-2 according to matroska specs, but it will have to do for now */
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gst_tag_list_get_string (list, GST_TAG_LANGUAGE_CODE, &context->language);
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if (mux->tags) {
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gst_tag_list_insert (mux->tags, list, GST_TAG_MERGE_PREPEND);
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} else {
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mux->tags = gst_tag_list_copy (list);
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}
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break;
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default:
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break;
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}
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/* now GstCollectPads can take care of the rest, e.g. EOS */
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ret = mux->collect_event (pad, event);
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gst_object_unref (mux);
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return ret;
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}
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/**
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* gst_matroska_mux_video_pad_setcaps:
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@ -1034,12 +1115,56 @@ gst_matroska_mux_request_new_pad (GstElement * element,
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collect_pad->track = context;
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collect_pad->buffer = NULL;
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/* FIXME: hacked way to override/extend the event function of
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* GstCollectPads; because it sets its own event function giving the
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* element no access to events.
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* TODO GstCollectPads should really give its 'users' a clean chance to
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* properly handle events that are not meant for collectpads itself.
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* Perhaps a callback or so, though rejected (?) in #340060.
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* This would allow (clean) transcoding of info from demuxer/streams
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* to another muxer */
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mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (newpad);
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gst_pad_set_event_function (newpad,
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GST_DEBUG_FUNCPTR (gst_matroska_mux_handle_sink_event));
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gst_pad_set_setcaps_function (newpad, setcapsfunc);
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gst_element_add_pad (element, newpad);
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return newpad;
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}
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/**
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* gst_matroska_mux_release_pad:
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* @element: #GstMatroskaMux.
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* @pad: Pad to release.
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*
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* Release a previously requested pad.
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*/
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static void
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gst_matroska_mux_release_pad (GstElement * element, GstPad * pad)
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{
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GstMatroskaMux *mux;
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GSList *walk;
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mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
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for (walk = mux->collect->data; walk; walk = g_slist_next (walk)) {
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GstCollectData *cdata = (GstCollectData *) walk->data;
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GstMatroskaPad *collect_pad = (GstMatroskaPad *) cdata;
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if (cdata->pad == pad) {
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if (collect_pad->duration > mux->duration)
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mux->duration = collect_pad->duration;
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gst_matroska_pad_free (collect_pad);
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gst_collect_pads_remove_pad (mux->collect, pad);
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gst_element_remove_pad (element, pad);
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return;
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}
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}
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g_warning ("%s: unknown pad %s", GST_FUNCTION, GST_PAD_NAME (pad));
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}
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/**
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* gst_matroska_mux_track_header:
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@ -1065,6 +1190,10 @@ gst_matroska_mux_track_header (GstMatroskaMux * mux,
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gst_ebml_write_uint (ebml, GST_MATROSKA_ID_TRACKDEFAULTDURATION,
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context->default_duration);
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}
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if (context->language) {
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gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_TRACKLANGUAGE,
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context->language);
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}
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/* type-specific stuff */
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switch (context->type) {
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@ -1148,9 +1277,7 @@ gst_matroska_mux_start (GstMatroskaMux * mux)
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GST_MATROSKA_ID_TRACKS,
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GST_MATROSKA_ID_CUES,
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GST_MATROSKA_ID_SEEKHEAD,
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#if 0
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GST_MATROSKA_ID_TAGS,
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#endif
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0
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};
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guint64 master, child;
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@ -1257,6 +1384,56 @@ gst_matroska_mux_start (GstMatroskaMux * mux)
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gst_ebml_write_flush_cache (ebml);
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}
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static void
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gst_matroska_mux_write_simple_tag (const GstTagList * list, const gchar * tag,
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gpointer data)
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{
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struct
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{
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gchar *matroska_tagname;
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gchar *gstreamer_tagname;
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}
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tag_conv[] = {
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{
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GST_MATROSKA_TAG_ID_TITLE, GST_TAG_TITLE}, {
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GST_MATROSKA_TAG_ID_AUTHOR, GST_TAG_ARTIST}, {
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GST_MATROSKA_TAG_ID_ALBUM, GST_TAG_ALBUM}, {
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GST_MATROSKA_TAG_ID_COMMENTS, GST_TAG_COMMENT}, {
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GST_MATROSKA_TAG_ID_BITSPS, GST_TAG_BITRATE}, {
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GST_MATROSKA_TAG_ID_DATE, GST_TAG_DATE}, {
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GST_MATROSKA_TAG_ID_ISRC, GST_TAG_ISRC}, {
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GST_MATROSKA_TAG_ID_COPYRIGHT, GST_TAG_COPYRIGHT}
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};
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GstEbmlWrite *ebml = (GstEbmlWrite *) data;
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guint i;
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guint64 simpletag_master;
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for (i = 0; i < G_N_ELEMENTS (tag_conv); i++) {
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const gchar *tagname_gst = tag_conv[i].gstreamer_tagname;
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const gchar *tagname_mkv = tag_conv[i].matroska_tagname;
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if (strcmp (tagname_gst, tag) == 0) {
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GValue src = { 0, };
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GValue dest = { 0, };
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if (!gst_tag_list_copy_value (&src, list, tag))
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break;
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g_value_init (&dest, G_TYPE_STRING);
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g_value_transform (&src, &dest);
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g_value_unset (&src);
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simpletag_master = gst_ebml_write_master_start (ebml,
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GST_MATROSKA_ID_SIMPLETAG);
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gst_ebml_write_ascii (ebml, GST_MATROSKA_ID_TAGNAME, tagname_mkv);
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gst_ebml_write_utf8 (ebml, GST_MATROSKA_ID_TAGSTRING,
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g_value_get_string (&dest));
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gst_ebml_write_master_finish (ebml, simpletag_master);
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g_value_unset (&dest);
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break;
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}
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}
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}
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/**
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* gst_matroska_mux_finish:
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@ -1271,6 +1448,7 @@ gst_matroska_mux_finish (GstMatroskaMux * mux)
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guint64 pos;
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guint64 duration = 0;
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GSList *collected;
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GstTagList *tags;
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/* finish last cluster */
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if (mux->cluster) {
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@ -1328,7 +1506,21 @@ gst_matroska_mux_finish (GstMatroskaMux * mux)
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}
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gst_ebml_write_flush_cache (ebml);
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/* FIXME: tags */
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/* tags */
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tags = gst_tag_list_merge (gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux)),
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mux->tags, GST_TAG_MERGE_APPEND);
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if (tags != NULL) {
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guint64 master_tags, master_tag;
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mux->tags_pos = ebml->pos;
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master_tags = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAGS);
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master_tag = gst_ebml_write_master_start (ebml, GST_MATROSKA_ID_TAG);
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gst_tag_list_foreach (tags, gst_matroska_mux_write_simple_tag, ebml);
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gst_ebml_write_master_finish (ebml, master_tag);
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gst_ebml_write_master_finish (ebml, master_tags);
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gst_tag_list_free (tags);
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}
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/* update seekhead. We know that:
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* - a seekhead contains 4 entries.
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@ -1366,13 +1558,22 @@ gst_matroska_mux_finish (GstMatroskaMux * mux)
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gst_ebml_write_buffer_header (ebml, GST_EBML_ID_VOID, 26);
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gst_ebml_write_seek (ebml, my_pos);
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}
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#if 0
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gst_ebml_replace_uint (ebml, mux->seekhead_pos + 116,
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mux->tags_pos - mux->segment_master);
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#endif
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if (tags != NULL) {
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gst_ebml_replace_uint (ebml, mux->seekhead_pos + 144,
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mux->tags_pos - mux->segment_master);
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} else {
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/* void'ify */
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guint64 my_pos = ebml->pos;
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gst_ebml_write_seek (ebml, mux->seekhead_pos + 124);
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gst_ebml_write_buffer_header (ebml, GST_EBML_ID_VOID, 26);
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gst_ebml_write_seek (ebml, my_pos);
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}
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/* update duration */
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/* first get the overall duration */
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/* a released track may have left a duration in here */
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duration = mux->duration;
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for (collected = mux->collect->data; collected;
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collected = g_slist_next (collected)) {
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GstMatroskaPad *collect_pad;
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@ -86,6 +86,7 @@ typedef struct _GstMatroskaMux {
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/* pads */
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GstPad *srcpad;
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GstCollectPads *collect;
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GstPadEventFunction collect_event;
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GstEbmlWrite *ebml_write;
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guint num_streams,
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@ -114,7 +115,7 @@ typedef struct _GstMatroskaMux {
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guint64 segment_pos,
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seekhead_pos,
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cues_pos,
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/* tags_pos, */
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tags_pos,
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info_pos,
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tracks_pos,
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duration_pos,
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@ -129,6 +130,9 @@ typedef struct _GstMatroskaMux {
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/* meta-seek info */
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GstMatroskaMetaSeekIndex *meta_index;
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guint num_meta_indexes;
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/* tags */
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GstTagList *tags;
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} GstMatroskaMux;
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typedef struct _GstMatroskaMuxClass {
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Reference in a new issue