mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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a7347ca8f7
Export GES library API in headers when we're building the library itself, otherwise import the API from the headers. This fixes linker warnings on Windows when building with MSVC. Fix up some missing config.h includes when building the lib which is needed to get the export api define from config.h Fixes https://gitlab.freedesktop.org/gstreamer/gst-editing-services/issues/42
157 lines
4.1 KiB
C
157 lines
4.1 KiB
C
/* GStreamer Editing Services
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* Copyright (C) <2013> Thibault Saunier <thibault.saunier@collabora.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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/**
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* SECTION: gesvideotrack
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* @title: GESVideoTrack
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* @short_description: A standard GESTrack for raw video
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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-video-track.h"
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#include "ges-smart-video-mixer.h"
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struct _GESVideoTrackPrivate
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{
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gpointer nothing;
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};
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G_DEFINE_TYPE_WITH_PRIVATE (GESVideoTrack, ges_video_track, GES_TYPE_TRACK);
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static void
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_sync_capsfilter_with_track (GESTrack * track, GstElement * capsfilter)
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{
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GstCaps *restriction, *caps;
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gint fps_n, fps_d;
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GstStructure *structure;
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g_object_get (track, "restriction-caps", &restriction, NULL);
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if (restriction == NULL)
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return;
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if (gst_caps_get_size (restriction) == 0)
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goto done;
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structure = gst_caps_get_structure (restriction, 0);
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if (!gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d))
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goto done;
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caps =
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gst_caps_new_simple ("video/x-raw", "framerate", GST_TYPE_FRACTION, fps_n,
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fps_d, NULL);
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g_object_set (capsfilter, "caps", caps, NULL);
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gst_caps_unref (caps);
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done:
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gst_caps_unref (restriction);
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}
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static void
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_track_restriction_changed_cb (GESTrack * track, GParamSpec * arg G_GNUC_UNUSED,
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GstElement * capsfilter)
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{
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_sync_capsfilter_with_track (track, capsfilter);
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}
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static void
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_weak_notify_cb (GESTrack * track, GstElement * capsfilter)
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{
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g_signal_handlers_disconnect_by_func (track,
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(GCallback) _track_restriction_changed_cb, capsfilter);
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}
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static GstElement *
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create_element_for_raw_video_gap (GESTrack * track)
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{
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GstElement *bin;
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GstElement *capsfilter;
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bin = gst_parse_bin_from_description
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("videotestsrc pattern=2 name=src ! videorate ! capsfilter name=gapfilter caps=video/x-raw",
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TRUE, NULL);
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capsfilter = gst_bin_get_by_name (GST_BIN (bin), "gapfilter");
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g_object_weak_ref (G_OBJECT (capsfilter), (GWeakNotify) _weak_notify_cb,
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track);
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g_signal_connect (track, "notify::restriction-caps",
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(GCallback) _track_restriction_changed_cb, capsfilter);
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_sync_capsfilter_with_track (track, capsfilter);
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gst_object_unref (capsfilter);
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return bin;
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}
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static void
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ges_video_track_init (GESVideoTrack * ges_video_track)
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{
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/* GESVideoTrackPrivate *priv = GES_VIDEO_TRACK_GET_PRIVATE (ges_video_track);
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*/
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/* TODO: Add initialization code here */
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}
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static void
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ges_video_track_finalize (GObject * object)
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{
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/* TODO: Add deinitalization code here */
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G_OBJECT_CLASS (ges_video_track_parent_class)->finalize (object);
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}
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static void
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ges_video_track_class_init (GESVideoTrackClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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/* GESTrackClass *parent_class = GES_TRACK_CLASS (klass);
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*/
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object_class->finalize = ges_video_track_finalize;
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GES_TRACK_CLASS (klass)->get_mixing_element = ges_smart_mixer_new;
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}
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/**
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* ges_video_track_new:
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*
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* Creates a new #GESVideoTrack of type #GES_TRACK_TYPE_VIDEO and with generic
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* raw video caps ("video/x-raw");
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*
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* Returns: (transfer floating): A new #GESTrack.
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*/
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GESVideoTrack *
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ges_video_track_new (void)
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{
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GESVideoTrack *ret;
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GstCaps *caps = gst_caps_new_empty_simple ("video/x-raw");
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ret = g_object_new (GES_TYPE_VIDEO_TRACK, "track-type", GES_TRACK_TYPE_VIDEO,
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"caps", caps, NULL);
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ges_track_set_create_element_for_gap_func (GES_TRACK (ret),
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create_element_for_raw_video_gap);
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gst_caps_unref (caps);
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return ret;
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}
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