mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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dvdspu: negotiate overlay composition meta with downstream
This allows attaching the overlay composition as a meta on the video buffer instead of blending with the video. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5827>
This commit is contained in:
Arnaud Vrac
GStreamer Marge Bot
parent
85081cbef7
commit
5919bfec5e
2 changed files with 372 additions and 29 deletions
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@ -58,17 +58,23 @@ enum
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#define VIDEO_FORMATS GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS
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#define DVDSPU_CAPS GST_VIDEO_CAPS_MAKE (VIDEO_FORMATS)
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#define DVDSPU_ALL_CAPS DVDSPU_CAPS ";" \
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS_ALL)
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static GstStaticCaps sw_template_caps = GST_STATIC_CAPS (DVDSPU_CAPS);
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static GstStaticPadTemplate video_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("video",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (VIDEO_FORMATS))
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GST_STATIC_CAPS (DVDSPU_ALL_CAPS)
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);
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (VIDEO_FORMATS))
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GST_STATIC_CAPS (DVDSPU_ALL_CAPS)
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);
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static GstStaticPadTemplate subpic_sink_factory =
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@ -93,8 +99,10 @@ static gboolean gst_dvd_spu_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_dvd_spu_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static GstCaps *gst_dvd_spu_src_get_caps (GstDVDSpu * dvdspu, GstPad * pad,
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GstCaps * filter);
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static GstCaps *gst_dvd_spu_video_proxy_getcaps (GstPad * pad,
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static GstCaps *gst_dvd_spu_video_get_caps (GstDVDSpu * dvdspu, GstPad * pad,
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GstCaps * filter);
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static gboolean gst_dvd_spu_video_set_caps (GstDVDSpu * dvdspu, GstPad * pad,
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GstCaps * caps);
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@ -113,6 +121,7 @@ static gboolean gst_dvd_spu_subpic_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_dvd_spu_subpic_set_caps (GstDVDSpu * dvdspu, GstPad * pad,
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GstCaps * caps);
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static gboolean gst_dvd_spu_negotiate (GstDVDSpu * dvdspu, GstCaps * caps);
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static void gst_dvd_spu_clear (GstDVDSpu * dvdspu);
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static void gst_dvd_spu_flush_spu_info (GstDVDSpu * dvdspu,
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@ -292,6 +301,7 @@ gst_dvd_spu_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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static gboolean
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gst_dvd_spu_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
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{
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GstDVDSpu *dvdspu = GST_DVD_SPU (parent);
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gboolean res = FALSE;
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switch (GST_QUERY_TYPE (query)) {
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@ -300,7 +310,7 @@ gst_dvd_spu_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
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GstCaps *filter, *caps;
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gst_query_parse_caps (query, &filter);
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caps = gst_dvd_spu_video_proxy_getcaps (pad, filter);
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caps = gst_dvd_spu_src_get_caps (dvdspu, pad, filter);
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gst_query_set_caps_result (query, caps);
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gst_caps_unref (caps);
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res = TRUE;
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@ -314,51 +324,239 @@ gst_dvd_spu_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
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return res;
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}
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static gboolean
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gst_dvd_spu_can_handle_caps (GstCaps * caps)
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{
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GstCaps *sw_caps;
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gboolean ret;
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sw_caps = gst_static_caps_get (&sw_template_caps);
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ret = gst_caps_is_subset (caps, sw_caps);
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gst_caps_unref (sw_caps);
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return ret;
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}
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static gboolean
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gst_dvd_spu_video_set_caps (GstDVDSpu * dvdspu, GstPad * pad, GstCaps * caps)
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{
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gboolean res = FALSE;
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GstVideoInfo info;
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SpuState *state;
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gboolean ret = FALSE;
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if (!gst_video_info_from_caps (&info, caps))
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goto done;
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goto invalid_caps;
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dvdspu->spu_state.info = info;
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ret = gst_dvd_spu_negotiate (dvdspu, caps);
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DVD_SPU_LOCK (dvdspu);
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state = &dvdspu->spu_state;
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state->info = info;
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if (!dvdspu->attach_compo_to_buffer && !gst_dvd_spu_can_handle_caps (caps)) {
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GST_DEBUG_OBJECT (dvdspu, "unsupported caps %" GST_PTR_FORMAT, caps);
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ret = FALSE;
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}
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DVD_SPU_UNLOCK (dvdspu);
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res = TRUE;
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done:
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return res;
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return ret;
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/* ERRORS */
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invalid_caps:
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{
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GST_DEBUG_OBJECT (dvdspu, "could not parse caps");
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return FALSE;
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}
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}
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/**
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* gst_dvd_spu_add_feature_and_intersect:
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*
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* Creates a new #GstCaps containing the (given caps +
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* given caps feature) + (given caps intersected by the
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* given filter).
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*
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* Returns: the new #GstCaps
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*/
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static GstCaps *
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gst_dvd_spu_add_feature_and_intersect (GstCaps * caps,
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const gchar * feature, GstCaps * filter)
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{
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int i, caps_size;
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GstCaps *new_caps;
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new_caps = gst_caps_copy (caps);
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caps_size = gst_caps_get_size (new_caps);
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for (i = 0; i < caps_size; i++) {
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GstCapsFeatures *features = gst_caps_get_features (new_caps, i);
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if (!gst_caps_features_is_any (features)) {
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gst_caps_features_add (features, feature);
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}
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}
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gst_caps_append (new_caps, gst_caps_intersect_full (caps,
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filter, GST_CAPS_INTERSECT_FIRST));
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return new_caps;
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}
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/**
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* gst_dvd_spu_intersect_by_feature:
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*
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* Creates a new #GstCaps based on the following filtering rule.
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*
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* For each individual caps contained in given caps, if the
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* caps uses the given caps feature, keep a version of the caps
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* with the feature and an another one without. Otherwise, intersect
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* the caps with the given filter.
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*
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* Returns: the new #GstCaps
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*/
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static GstCaps *
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gst_dvd_spu_intersect_by_feature (GstCaps * caps,
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const gchar * feature, GstCaps * filter)
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{
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int i, caps_size;
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GstCaps *new_caps;
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new_caps = gst_caps_new_empty ();
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caps_size = gst_caps_get_size (caps);
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for (i = 0; i < caps_size; i++) {
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GstStructure *caps_structure = gst_caps_get_structure (caps, i);
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GstCapsFeatures *caps_features =
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gst_caps_features_copy (gst_caps_get_features (caps, i));
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GstCaps *filtered_caps;
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GstCaps *simple_caps =
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gst_caps_new_full (gst_structure_copy (caps_structure), NULL);
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gst_caps_set_features (simple_caps, 0, caps_features);
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if (gst_caps_features_contains (caps_features, feature)) {
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gst_caps_append (new_caps, gst_caps_copy (simple_caps));
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gst_caps_features_remove (caps_features, feature);
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filtered_caps = gst_caps_ref (simple_caps);
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} else {
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filtered_caps = gst_caps_intersect_full (simple_caps, filter,
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GST_CAPS_INTERSECT_FIRST);
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}
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gst_caps_unref (simple_caps);
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gst_caps_append (new_caps, filtered_caps);
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}
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return new_caps;
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}
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static GstCaps *
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gst_dvd_spu_video_proxy_getcaps (GstPad * pad, GstCaps * filter)
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gst_dvd_spu_video_get_caps (GstDVDSpu * dvdspu, GstPad * pad, GstCaps * filter)
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{
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GstDVDSpu *dvdspu = GST_DVD_SPU (gst_pad_get_parent (pad));
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GstCaps *caps;
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GstPad *otherpad;
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GstPad *srcpad = dvdspu->srcpad;
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GstCaps *peer_caps = NULL, *caps = NULL, *dvdspu_filter = NULL;
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/* Proxy the getcaps between videosink and the srcpad, ignoring the
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* subpicture sink pad */
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otherpad = (pad == dvdspu->srcpad) ? dvdspu->videosinkpad : dvdspu->srcpad;
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if (filter) {
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/* filter caps + composition feature + filter caps
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* filtered by the software caps. */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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dvdspu_filter = gst_dvd_spu_add_feature_and_intersect (filter,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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caps = gst_pad_peer_query_caps (otherpad, filter);
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if (caps) {
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GstCaps *temp, *templ;
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GST_DEBUG_OBJECT (dvdspu, "dvdspu filter %" GST_PTR_FORMAT, dvdspu_filter);
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}
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templ = gst_pad_get_pad_template_caps (otherpad);
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temp = gst_caps_intersect (caps, templ);
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gst_caps_unref (templ);
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gst_caps_unref (caps);
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caps = temp;
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peer_caps = gst_pad_peer_query_caps (srcpad, dvdspu_filter);
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if (dvdspu_filter)
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gst_caps_unref (dvdspu_filter);
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if (peer_caps) {
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GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, peer_caps);
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if (gst_caps_is_any (peer_caps)) {
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/* if peer returns ANY caps, return filtered src pad template caps */
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caps = gst_caps_copy (gst_pad_get_pad_template_caps (srcpad));
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} else {
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/* duplicate caps which contains the composition into one version with
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* the meta and one without. Filter the other caps by the software caps */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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caps = gst_dvd_spu_intersect_by_feature (peer_caps,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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}
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gst_caps_unref (peer_caps);
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} else {
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/* no peer, our padtemplate is enough then */
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caps = gst_pad_get_pad_template_caps (pad);
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}
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gst_object_unref (dvdspu);
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if (filter) {
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GstCaps *intersection = gst_caps_intersect_full (filter, caps,
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GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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caps = intersection;
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}
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GST_DEBUG_OBJECT (dvdspu, "returning %" GST_PTR_FORMAT, caps);
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return caps;
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}
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static GstCaps *
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gst_dvd_spu_src_get_caps (GstDVDSpu * dvdspu, GstPad * pad, GstCaps * filter)
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{
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GstPad *sinkpad = dvdspu->videosinkpad;
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GstCaps *peer_caps = NULL, *caps = NULL, *dvdspu_filter = NULL;
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if (filter) {
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/* duplicate filter caps which contains the composition into one version
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* with the meta and one without. Filter the other caps by the software
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* caps */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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dvdspu_filter = gst_dvd_spu_intersect_by_feature (filter,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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}
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peer_caps = gst_pad_peer_query_caps (sinkpad, dvdspu_filter);
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if (dvdspu_filter)
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gst_caps_unref (dvdspu_filter);
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if (peer_caps) {
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GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, peer_caps);
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if (gst_caps_is_any (peer_caps)) {
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/* if peer returns ANY caps, return filtered sink pad template caps */
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caps = gst_caps_copy (gst_pad_get_pad_template_caps (sinkpad));
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} else {
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/* return upstream caps + composition feature + upstream caps
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* filtered by the software caps. */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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caps = gst_dvd_spu_add_feature_and_intersect (peer_caps,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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}
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gst_caps_unref (peer_caps);
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} else {
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/* no peer, our padtemplate is enough then */
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caps = gst_pad_get_pad_template_caps (pad);
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}
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if (filter) {
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GstCaps *intersection = gst_caps_intersect_full (filter, caps,
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GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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caps = intersection;
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}
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GST_DEBUG_OBJECT (dvdspu, "returning %" GST_PTR_FORMAT, caps);
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return caps;
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}
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@ -487,12 +685,16 @@ gst_dvd_spu_video_event (GstPad * pad, GstObject * parent, GstEvent * event)
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break;
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}
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case GST_EVENT_FLUSH_START:
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DVD_SPU_LOCK (dvdspu);
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dvdspu->video_flushing = TRUE;
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DVD_SPU_UNLOCK (dvdspu);
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res = gst_pad_event_default (pad, parent, event);
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goto done;
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case GST_EVENT_FLUSH_STOP:
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res = gst_pad_event_default (pad, parent, event);
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DVD_SPU_LOCK (dvdspu);
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dvdspu->video_flushing = FALSE;
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gst_segment_init (&dvdspu->video_seg, GST_FORMAT_UNDEFINED);
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gst_buffer_replace (&dvdspu->ref_frame, NULL);
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gst_buffer_replace (&dvdspu->pending_frame, NULL);
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@ -516,6 +718,7 @@ error:
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static gboolean
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gst_dvd_spu_video_query (GstPad * pad, GstObject * parent, GstQuery * query)
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{
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GstDVDSpu *dvdspu = GST_DVD_SPU (parent);
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gboolean res = FALSE;
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switch (GST_QUERY_TYPE (query)) {
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@ -524,7 +727,7 @@ gst_dvd_spu_video_query (GstPad * pad, GstObject * parent, GstQuery * query)
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GstCaps *filter, *caps;
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gst_query_parse_caps (query, &filter);
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caps = gst_dvd_spu_video_proxy_getcaps (pad, filter);
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caps = gst_dvd_spu_video_get_caps (dvdspu, pad, filter);
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gst_query_set_caps_result (query, caps);
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gst_caps_unref (caps);
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res = TRUE;
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@ -546,6 +749,9 @@ gst_dvd_spu_video_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
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g_return_val_if_fail (dvdspu != NULL, GST_FLOW_ERROR);
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if (gst_pad_check_reconfigure (dvdspu->srcpad))
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gst_dvd_spu_negotiate (dvdspu, NULL);
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GST_LOG_OBJECT (dvdspu, "video buffer %p with TS %" GST_TIME_FORMAT,
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buf, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
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@ -827,6 +1033,11 @@ gstspu_render (GstDVDSpu * dvdspu, GstBuffer * buf)
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if (!composition)
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return;
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if (dvdspu->attach_compo_to_buffer) {
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gst_buffer_add_video_overlay_composition_meta (buf, composition);
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goto done;
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}
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if (!gst_video_frame_map (&frame, &dvdspu->spu_state.info, buf,
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GST_MAP_READWRITE)) {
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GST_WARNING_OBJECT (dvdspu, "failed to map video frame for blending");
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@ -1063,6 +1274,134 @@ submit_new_spu_packet (GstDVDSpu * dvdspu, GstBuffer * buf)
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}
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}
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static gboolean
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gst_dvd_spu_negotiate (GstDVDSpu * dvdspu, GstCaps * caps)
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{
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gboolean upstream_has_meta = FALSE;
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gboolean caps_has_meta = FALSE;
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gboolean alloc_has_meta = FALSE;
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gboolean attach = FALSE;
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gboolean ret = TRUE;
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GstCapsFeatures *f;
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GstCaps *overlay_caps;
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GstQuery *query;
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GST_DEBUG_OBJECT (dvdspu, "performing negotiation");
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/* Clear any pending reconfigure to avoid negotiating twice */
|
||||
gst_pad_check_reconfigure (dvdspu->srcpad);
|
||||
|
||||
if (!caps)
|
||||
caps = gst_pad_get_current_caps (dvdspu->videosinkpad);
|
||||
else
|
||||
gst_caps_ref (caps);
|
||||
|
||||
if (!caps || gst_caps_is_empty (caps))
|
||||
goto no_format;
|
||||
|
||||
/* Check if upstream caps have meta */
|
||||
if ((f = gst_caps_get_features (caps, 0))) {
|
||||
upstream_has_meta = gst_caps_features_contains (f,
|
||||
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);
|
||||
}
|
||||
|
||||
if (upstream_has_meta) {
|
||||
overlay_caps = gst_caps_ref (caps);
|
||||
} else {
|
||||
GstCaps *peercaps;
|
||||
|
||||
/* BaseTransform requires caps for the allocation query to work */
|
||||
overlay_caps = gst_caps_copy (caps);
|
||||
f = gst_caps_get_features (overlay_caps, 0);
|
||||
gst_caps_features_add (f,
|
||||
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);
|
||||
|
||||
/* Then check if downstream accept dvdspu composition in caps */
|
||||
/* FIXME: We should probably check if downstream *prefers* the
|
||||
* dvdspu meta, and only enforce usage of it if we can't handle
|
||||
* the format ourselves and thus would have to drop the overlays.
|
||||
* Otherwise we should prefer what downstream wants here.
|
||||
*/
|
||||
peercaps = gst_pad_peer_query_caps (dvdspu->srcpad, NULL);
|
||||
caps_has_meta = gst_caps_can_intersect (peercaps, overlay_caps);
|
||||
gst_caps_unref (peercaps);
|
||||
|
||||
GST_DEBUG ("caps have dvdspu meta %d", caps_has_meta);
|
||||
}
|
||||
|
||||
if (upstream_has_meta || caps_has_meta) {
|
||||
/* Send caps immediatly, it's needed by GstBaseTransform to get a reply
|
||||
* from allocation query */
|
||||
ret = gst_pad_set_caps (dvdspu->srcpad, overlay_caps);
|
||||
|
||||
/* First check if the allocation meta has compositon */
|
||||
query = gst_query_new_allocation (overlay_caps, FALSE);
|
||||
|
||||
if (!gst_pad_peer_query (dvdspu->srcpad, query)) {
|
||||
/* no problem, we use the query defaults */
|
||||
GST_DEBUG_OBJECT (dvdspu, "ALLOCATION query failed");
|
||||
|
||||
/* In case we were flushing, mark reconfigure and fail this method,
|
||||
* will make it retry */
|
||||
if (dvdspu->video_flushing)
|
||||
ret = FALSE;
|
||||
}
|
||||
|
||||
alloc_has_meta = gst_query_find_allocation_meta (query,
|
||||
GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, NULL);
|
||||
|
||||
GST_DEBUG ("sink alloc has dvdspu meta %d", alloc_has_meta);
|
||||
|
||||
gst_query_unref (query);
|
||||
}
|
||||
|
||||
/* For backward compatbility, we will prefer bliting if downstream
|
||||
* allocation does not support the meta. In other case we will prefer
|
||||
* attaching, and will fail the negotiation in the unlikely case we are
|
||||
* force to blit, but format isn't supported. */
|
||||
|
||||
if (upstream_has_meta) {
|
||||
attach = TRUE;
|
||||
} else if (caps_has_meta) {
|
||||
if (alloc_has_meta) {
|
||||
attach = TRUE;
|
||||
} else {
|
||||
/* Don't attach unless we cannot handle the format */
|
||||
attach = !gst_dvd_spu_can_handle_caps (caps);
|
||||
}
|
||||
} else {
|
||||
ret = gst_dvd_spu_can_handle_caps (caps);
|
||||
}
|
||||
|
||||
/* If we attach, then pick the dvdspu caps */
|
||||
if (attach) {
|
||||
GST_DEBUG_OBJECT (dvdspu, "Using caps %" GST_PTR_FORMAT, overlay_caps);
|
||||
/* Caps where already sent */
|
||||
} else if (ret) {
|
||||
GST_DEBUG_OBJECT (dvdspu, "Using caps %" GST_PTR_FORMAT, caps);
|
||||
ret = gst_pad_set_caps (dvdspu->srcpad, caps);
|
||||
}
|
||||
|
||||
dvdspu->attach_compo_to_buffer = attach;
|
||||
|
||||
if (!ret) {
|
||||
GST_DEBUG_OBJECT (dvdspu, "negotiation failed, schedule reconfigure");
|
||||
gst_pad_mark_reconfigure (dvdspu->srcpad);
|
||||
}
|
||||
|
||||
gst_caps_unref (overlay_caps);
|
||||
gst_caps_unref (caps);
|
||||
|
||||
return ret;
|
||||
|
||||
no_format:
|
||||
{
|
||||
if (caps)
|
||||
gst_caps_unref (caps);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_dvd_spu_subpic_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -94,6 +94,7 @@ struct _GstDVDSpu {
|
|||
/* Mutex to protect state we access from different chain funcs */
|
||||
GMutex spu_lock;
|
||||
|
||||
gboolean video_flushing;
|
||||
GstSegment video_seg;
|
||||
GstSegment subp_seg;
|
||||
|
||||
|
|
@ -112,6 +113,9 @@ struct _GstDVDSpu {
|
|||
|
||||
/* Buffer to push after handling a DVD event, if any */
|
||||
GstBuffer *pending_frame;
|
||||
|
||||
/* Overlay composition */
|
||||
gboolean attach_compo_to_buffer;
|
||||
};
|
||||
|
||||
struct _GstDVDSpuClass {
|
||||
|
|
|
|||
Loading…
Reference in a new issue