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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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304 lines
7.6 KiB
C
304 lines
7.6 KiB
C
/* GStreamer
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* nf_get_default_audio_sink
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* Copyright (C) <2002> Thomas Vander Stichele <thomas@apestaart.org>
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* Copyright (C) <2006> Jürg Billeter <j@bitron.ch>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* this library handles interaction with GConf
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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 <gst/gst.h>
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#include "gstgconf.h"
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#include "gstgconfelements.h" /* for debug category */
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#ifndef GST_GCONF_DIR
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#error "GST_GCONF_DIR is not defined !"
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#endif
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static GConfClient *_gst_gconf_client = NULL; /* GConf connection */
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/* internal functions */
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static GConfClient *
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gst_gconf_get_client (void)
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{
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if (!_gst_gconf_client)
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_gst_gconf_client = gconf_client_get_default ();
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return _gst_gconf_client;
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}
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/* external functions */
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/**
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* gst_gconf_get_string:
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* @key: a #gchar corresponding to the key you want to get.
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*
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* Get GConf key @key's string value.
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*
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* Returns: a newly allocated #gchar string containing @key's value,
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* or NULL in the case of an error..
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*/
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gchar *
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gst_gconf_get_string (const gchar * key)
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{
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GError *error = NULL;
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gchar *value = NULL;
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gchar *full_key;
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if (!g_str_has_prefix (key, GST_GCONF_DIR))
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full_key = g_strdup_printf ("%s/%s", GST_GCONF_DIR, key);
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else
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full_key = g_strdup (key);
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value = gconf_client_get_string (gst_gconf_get_client (), full_key, &error);
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g_free (full_key);
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if (error) {
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g_warning ("gst_gconf_get_string: error: %s\n", error->message);
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g_error_free (error);
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return NULL;
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}
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return value;
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}
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const gchar *
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gst_gconf_get_key_for_sink_profile (GstGConfProfile profile)
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{
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switch (profile) {
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case GCONF_PROFILE_SOUNDS:
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return GST_GCONF_DIR "/" GST_GCONF_AUDIOSINK_KEY;
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case GCONF_PROFILE_MUSIC:
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return GST_GCONF_DIR "/" GST_GCONF_MUSIC_AUDIOSINK_KEY;
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case GCONF_PROFILE_CHAT:
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return GST_GCONF_DIR "/" GST_GCONF_CHAT_AUDIOSINK_KEY;
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default:
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break;
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}
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g_return_val_if_reached (GST_GCONF_DIR "/" GST_GCONF_AUDIOSINK_KEY);
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}
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/**
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* gst_gconf_set_string:
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* @key: a #gchar corresponding to the key you want to set.
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* @value: a #gchar containing key value.
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*
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* Set GConf key @key to string value @value.
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*/
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void
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gst_gconf_set_string (const gchar * key, const gchar * value)
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{
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GError *error = NULL;
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gchar *full_key;
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if (!g_str_has_prefix (key, GST_GCONF_DIR))
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full_key = g_strdup_printf ("%s/%s", GST_GCONF_DIR, key);
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else
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full_key = g_strdup (key);
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gconf_client_set_string (gst_gconf_get_client (), full_key, value, &error);
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if (error) {
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GST_ERROR ("gst_gconf_set_string: error: %s\n", error->message);
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g_error_free (error);
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}
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g_free (full_key);
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}
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/**
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* gst_gconf_render_bin_from_key:
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* @key: a #gchar string corresponding to a GConf key.
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*
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* Render bin from GConf key @key.
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*
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* Returns: a #GstElement containing the rendered bin.
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*/
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GstElement *
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gst_gconf_render_bin_from_key (const gchar * key)
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{
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GstElement *bin = NULL;
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gchar *value;
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value = gst_gconf_get_string (key);
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GST_LOG ("%s = %s", GST_STR_NULL (key), GST_STR_NULL (value));
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if (value) {
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GError *err = NULL;
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bin = gst_parse_bin_from_description (value, TRUE, &err);
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if (err) {
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GST_ERROR ("gconf: error creating bin '%s': %s", value, err->message);
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g_error_free (err);
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}
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g_free (value);
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}
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return bin;
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}
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/**
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* gst_gconf_render_bin_with_default:
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* @bin: a #gchar string describing the pipeline to construct.
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* @default_sink: an element to use as default if the given pipeline fails to construct.
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*
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* Render bin from description @bin using @default_sink element as a fallback.
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*
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* Returns: a #GstElement containing the rendered bin.
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*/
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GstElement *
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gst_gconf_render_bin_with_default (const gchar * bin,
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const gchar * default_sink)
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{
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GstElement *ret = NULL;
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GError *err = NULL;
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if (bin != NULL)
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ret = gst_parse_bin_from_description (bin, TRUE, &err);
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if (ret == NULL || err != NULL) {
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if (err) {
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GST_DEBUG ("Could not create audio sink from GConf settings: %s",
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err->message);
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g_error_free (err);
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} else {
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GST_DEBUG ("Could not create audio sink from GConf settings");
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}
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ret = gst_element_factory_make (default_sink, NULL);
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if (!ret)
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g_warning
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("Could not build GConf audio sink and the replacement %s doesn't work",
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DEFAULT_AUDIOSINK);
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}
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return ret;
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}
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/**
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* gst_gconf_get_default_video_sink:
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*
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* Render video output bin from GStreamer GConf key : "default/videosink".
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* If key is invalid, the default video sink for the platform is used
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* (typically xvimagesink or ximagesink).
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*
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* Returns: a #GstElement containing the video output bin, or NULL if
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* everything failed.
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*/
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GstElement *
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gst_gconf_get_default_video_sink (void)
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{
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GstElement *ret = gst_gconf_render_bin_from_key (GST_GCONF_VIDEOSINK_KEY);
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if (!ret) {
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ret = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL);
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if (!ret)
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g_warning ("No GConf default video sink key and %s doesn't work",
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DEFAULT_VIDEOSINK);
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}
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return ret;
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}
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/**
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* gst_gconf_get_default_audio_src:
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*
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* Render audio acquisition bin from GStreamer GConf key : "default/audiosrc".
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* If key is invalid, the default audio source for the plaform is used.
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* (typically osssrc or sunaudiosrc).
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*
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* Returns: a #GstElement containing the audio source bin, or NULL if
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* everything failed.
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*/
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GstElement *
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gst_gconf_get_default_audio_src (void)
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{
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GstElement *ret = gst_gconf_render_bin_from_key (GST_GCONF_AUDIOSRC_KEY);
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if (!ret) {
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ret = gst_element_factory_make (DEFAULT_AUDIOSRC, NULL);
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if (!ret)
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g_warning ("No GConf default audio src key and %s doesn't work",
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DEFAULT_AUDIOSRC);
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}
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return ret;
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}
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/**
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* gst_gconf_get_default_video_src:
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*
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* Render video acquisition bin from GStreamer GConf key :
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* "default/videosrc". If key is invalid, the default video source
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* for the platform is used (typically videotestsrc).
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*
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* Returns: a #GstElement containing the video source bin, or NULL if
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* everything failed.
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*/
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GstElement *
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gst_gconf_get_default_video_src (void)
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{
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GstElement *ret = gst_gconf_render_bin_from_key (GST_GCONF_VIDEOSRC_KEY);
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if (!ret) {
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ret = gst_element_factory_make (DEFAULT_VIDEOSRC, NULL);
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if (!ret)
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g_warning ("No GConf default video src key and %s doesn't work",
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DEFAULT_VIDEOSRC);
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}
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return ret;
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}
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/**
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* gst_gconf_get_default_visualization_element:
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*
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* Render visualization bin from GStreamer GConf key : "default/visualization".
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* If key is invalid, the default visualization element is used.
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*
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* Returns: a #GstElement containing the visualization bin, or NULL if
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* everything failed.
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*/
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GstElement *
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gst_gconf_get_default_visualization_element (void)
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{
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GstElement *ret = gst_gconf_render_bin_from_key ("default/visualization");
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if (!ret) {
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ret = gst_element_factory_make (DEFAULT_VISUALIZER, NULL);
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if (!ret)
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g_warning
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("No GConf default visualization plugin key and %s doesn't work",
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DEFAULT_VISUALIZER);
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}
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return ret;
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}
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