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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
140 lines
4 KiB
C
140 lines
4 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: gesaudiotrack
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* @title: GESAudioTrack
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* @short_description: A standard GESTrack for raw audio
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*
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* Sane default properties to specify and fixate the output stream are
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* set as restriction-caps.
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* It is advised, to modify these properties, to use
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* #ges_track_update_restriction_caps, setting them directly is
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* possible through #ges_track_set_restriction_caps, but not specifying
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* one of them can lead to negotiation issues, only use that function
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* if you actually know what you're doing :)
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*
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* The default properties are:
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* - format: S32LE
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* - channels: 2
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* - rate: 44100
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* - layout: interleaved
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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-smart-adder.h"
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#include "ges-audio-track.h"
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#define DEFAULT_CAPS "audio/x-raw"
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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#define DEFAULT_RESTRICTION_CAPS "audio/x-raw, format=S32LE, channels=2, "\
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"rate=44100, layout=interleaved"
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#else
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#define DEFAULT_RESTRICTION_CAPS "audio/x-raw, format=S32BE, channels=2, "\
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"rate=44100, layout=interleaved"
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#endif
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struct _GESAudioTrackPrivate
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{
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gpointer nothing;
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};
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G_DEFINE_TYPE_WITH_PRIVATE (GESAudioTrack, ges_audio_track, GES_TYPE_TRACK);
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/****************************************************
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* Private methods and utils *
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****************************************************/
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static GstElement *
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create_element_for_raw_audio_gap (GESTrack * track)
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{
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GstElement *elem;
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elem = gst_element_factory_make ("audiotestsrc", NULL);
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g_object_set (elem, "wave", 4, NULL);
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return elem;
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}
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/****************************************************
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* GObject vmethods implementations *
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****************************************************/
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static void
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ges_audio_track_init (GESAudioTrack * self)
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{
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self->priv = ges_audio_track_get_instance_private (self);
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}
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static void
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ges_audio_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_audio_track_parent_class)->finalize (object);
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}
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static void
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ges_audio_track_class_init (GESAudioTrackClass * 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_audio_track_finalize;
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GES_TRACK_CLASS (klass)->get_mixing_element = ges_smart_adder_new;
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}
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/****************************************************
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* API implementation *
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****************************************************/
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/**
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* ges_audio_track_new:
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*
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* Creates a new #GESAudioTrack of type #GES_TRACK_TYPE_AUDIO and with generic
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* raw audio caps ("audio/x-raw");
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*
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* Returns: (transfer floating): A new #GESTrack
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*/
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GESAudioTrack *
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ges_audio_track_new (void)
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{
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GESAudioTrack *ret;
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GstCaps *caps = gst_caps_from_string (DEFAULT_CAPS);
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GstCaps *restriction_caps = gst_caps_from_string (DEFAULT_RESTRICTION_CAPS);
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ret = g_object_new (GES_TYPE_AUDIO_TRACK, "caps", caps,
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"track-type", GES_TRACK_TYPE_AUDIO, NULL);
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ges_track_set_create_element_for_gap_func (GES_TRACK (ret),
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create_element_for_raw_audio_gap);
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ges_track_set_restriction_caps (GES_TRACK (ret), restriction_caps);
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gst_caps_unref (caps);
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gst_caps_unref (restriction_caps);
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return ret;
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}
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