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