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/* GStreamer Editing Services
* Copyright (C) 2020 Ubicast S.A
* Author: Thibault Saunier <tsaunier@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ges-internal.h"
#include "ges-uri-source.h"
GST_DEBUG_CATEGORY_STATIC (uri_source_debug);
#undef GST_CAT_DEFAULT
#define GST_CAT_DEFAULT uri_source_debug
#define DEFAULT_RAW_CAPS \
"video/x-raw; " \
"audio/x-raw; " \
"text/x-raw; " \
"subpicture/x-dvd; " \
"subpicture/x-pgs"
static GstStaticCaps default_raw_caps = GST_STATIC_CAPS (DEFAULT_RAW_CAPS);
static inline gboolean
are_raw_caps (const GstCaps * caps)
{
GstCaps *raw = gst_static_caps_get (&default_raw_caps);
gboolean res = gst_caps_can_intersect (caps, raw);
gst_caps_unref (raw);
return res;
}
typedef enum
{
GST_AUTOPLUG_SELECT_TRY,
GST_AUTOPLUG_SELECT_EXPOSE,
GST_AUTOPLUG_SELECT_SKIP,
} GstAutoplugSelectResult;
static gint
autoplug_select_cb (GstElement * bin, GstPad * pad, GstCaps * caps,
GstElementFactory * factory, GESUriSource * self)
{
GstElement *nlesrc;
GstCaps *downstream_caps;
GstQuery *segment_query = NULL;
GstFormat segment_format;
GstAutoplugSelectResult res = GST_AUTOPLUG_SELECT_TRY;
gchar *stream_id = gst_pad_get_stream_id (pad);
const gchar *wanted_id =
gst_discoverer_stream_info_get_stream_id
(ges_uri_source_asset_get_stream_info (GES_URI_SOURCE_ASSET
(ges_extractable_get_asset (GES_EXTRACTABLE (self->element)))));
gboolean wanted = !g_strcmp0 (stream_id, wanted_id);
if (!ges_source_get_rendering_smartly (GES_SOURCE (self->element))) {
if (!are_raw_caps (caps))
goto done;
if (!wanted) {
GST_INFO_OBJECT (self->element, "Not matching stream id: %s -> SKIPPING",
stream_id);
res = GST_AUTOPLUG_SELECT_SKIP;
} else {
GST_INFO_OBJECT (self->element, "Using stream %s", stream_id);
}
goto done;
}
segment_query = gst_query_new_segment (GST_FORMAT_TIME);
if (!gst_pad_query (pad, segment_query)) {
GST_DEBUG_OBJECT (pad, "Could not query segment");
goto done;
}
gst_query_parse_segment (segment_query, NULL, &segment_format, NULL, NULL);
if (segment_format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (pad,
"Segment not in %s != time for %" GST_PTR_FORMAT
"... continue plugin elements", gst_format_get_name (segment_format),
caps);
goto done;
}
nlesrc = ges_track_element_get_nleobject (self->element);
downstream_caps = gst_pad_peer_query_caps (nlesrc->srcpads->data, NULL);
if (downstream_caps && gst_caps_can_intersect (downstream_caps, caps)) {
if (wanted) {
res = GST_AUTOPLUG_SELECT_EXPOSE;
GST_INFO_OBJECT (self->element,
"Exposing %" GST_PTR_FORMAT " with stream id: %s", caps, stream_id);
} else {
res = GST_AUTOPLUG_SELECT_SKIP;
GST_DEBUG_OBJECT (self->element, "Totally skipping %s", stream_id);
}
}
gst_clear_caps (&downstream_caps);
done:
g_free (stream_id);
gst_clear_query (&segment_query);
return res;
}
GstElement *
ges_uri_source_create_source (GESUriSource * self)
{
GESTrack *track;
GstElement *decodebin;
const GstCaps *caps = NULL;
track = ges_track_element_get_track (self->element);
self->decodebin = decodebin = gst_element_factory_make ("uridecodebin", NULL);
GST_DEBUG_OBJECT (self->element,
"%" GST_PTR_FORMAT " - Track! %" GST_PTR_FORMAT, self->decodebin, track);
if (track)
caps = ges_track_get_caps (track);
g_object_set (decodebin, "caps", caps,
"expose-all-streams", FALSE, "uri", self->uri, NULL);
g_signal_connect (decodebin, "autoplug-select",
G_CALLBACK (autoplug_select_cb), self);
return decodebin;
}
static void
ges_uri_source_track_set_cb (GESTrackElement * element,
GParamSpec * arg G_GNUC_UNUSED, GESUriSource * self)
{
GESTrack *track;
const GstCaps *caps = NULL;
if (!self->decodebin)
return;
track = ges_track_element_get_track (GES_TRACK_ELEMENT (element));
if (!track)
return;
caps = ges_track_get_caps (track);
GST_INFO_OBJECT (element,
"Setting %" GST_PTR_FORMAT "caps to: %" GST_PTR_FORMAT, self->decodebin,
caps);
g_object_set (self->decodebin, "caps", caps, NULL);
}
void
ges_uri_source_init (GESTrackElement * element, GESUriSource * self)
{
static gsize once = 0;
if (g_once_init_enter (&once)) {
GST_DEBUG_CATEGORY_INIT (uri_source_debug, "gesurisource", 0,
"GES uri source");
g_once_init_leave (&once, 1);
}
self->element = element;
g_signal_connect (element, "notify::track",
G_CALLBACK (ges_uri_source_track_set_cb), self);
}
gboolean
ges_uri_source_select_pad (GESSource * self, GstPad * pad)
{
gboolean res = TRUE;
gboolean is_nested_timeline;
GESUriSourceAsset *asset =
GES_URI_SOURCE_ASSET (ges_extractable_get_asset (GES_EXTRACTABLE (self)));
const GESUriClipAsset *clip_asset =
ges_uri_source_asset_get_filesource_asset (asset);
const gchar *wanted_stream_id = ges_asset_get_id (GES_ASSET (asset));
gchar *stream_id;
if (clip_asset) {
g_object_get (G_OBJECT (clip_asset), "is-nested-timeline",
&is_nested_timeline, NULL);
if (is_nested_timeline) {
GST_DEBUG_OBJECT (self, "Nested timeline track selection is handled"
" by the timeline SELECT_STREAM events handling.");
return TRUE;
}
}
stream_id = gst_pad_get_stream_id (pad);
res = !g_strcmp0 (stream_id, wanted_stream_id);
GST_INFO_OBJECT (self, "%s pad with stream id: %s as %s wanted",
res ? "Using" : "Ignoring", stream_id, wanted_stream_id);
g_free (stream_id);
return res;
}
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