static void
build_pipeline (NscGStreamer *gstreamer)
{
NscGStreamerPrivate *priv;
GstBus *bus;
g_return_if_fail (NSC_IS_GSTREAMER (gstreamer));
priv = NSC_GSTREAMER_GET_PRIVATE (gstreamer);
if (priv->pipeline != NULL) {
gst_object_unref (GST_OBJECT (priv->pipeline));
}
priv->pipeline = gst_pipeline_new ("pipeline");
bus = gst_element_get_bus (priv->pipeline);
gst_bus_add_signal_watch (bus);
/* Connect the signals we want to listen to on the bus */
g_signal_connect (G_OBJECT (bus), "message::error",
G_CALLBACK (error_cb),
gstreamer);
g_signal_connect (G_OBJECT (bus), "message::eos",
G_CALLBACK (eos_cb),
gstreamer);
/* Read from disk */
priv->filesrc = gst_element_factory_make (FILE_SOURCE, "file_src");
if (priv->filesrc == NULL) {
g_set_error (&priv->construct_error,
NSC_ERROR, NSC_ERROR_INTERNAL_ERROR,
_("Could not create GStreamer file input"));
return;
}
/* Decode */
priv->decode = gst_element_factory_make ("decodebin", "decode");
if (priv->decode == NULL) {
g_set_error (&priv->construct_error,
NSC_ERROR, NSC_ERROR_INTERNAL_ERROR,
_("Could not create GStreamer file input"));
return;
}
/* Encode */
priv->encode = build_encoder (gstreamer);
if (priv->encode == NULL) {
g_set_error (&priv->construct_error,
NSC_ERROR, NSC_ERROR_INTERNAL_ERROR,
_("Could not create GStreamer encoders for %s"),
gm_audio_profile_get_name (priv->profile));
return;
}
/* Decodebin uses dynamic pads, so lets set up a callback. */
g_signal_connect (G_OBJECT (priv->decode), "new-decoded-pad",
G_CALLBACK (connect_decodebin_cb),
priv->encode);
/* Write to disk */
priv->filesink = gst_element_factory_make (FILE_SINK, "file_sink");
if (priv->filesink == NULL) {
g_set_error (&priv->construct_error,
NSC_ERROR, NSC_ERROR_INTERNAL_ERROR,
_("Could not create GStreamer file output"));
return;
}
/*
* TODO: Eventually, we should ask the user if they want to
* overwrite any existing file.
*/
g_signal_connect (G_OBJECT (priv->filesink), "allow-overwrite",
G_CALLBACK (just_say_yes),
gstreamer);
/* Add the elements to the pipeline */
gst_bin_add_many (GST_BIN (priv->pipeline),
priv->filesrc, priv->decode,
priv->encode, priv->filesink,
NULL);
/* Link filessrc and decoder */
if (!gst_element_link_many (priv->filesrc, priv->decode, NULL)) {
g_set_error (&priv->construct_error,
NSC_ERROR, NSC_ERROR_INTERNAL_ERROR,
_("Could not link pipeline"));
return;
}
/* Link the rest */
if (!gst_element_link (priv->encode, priv->filesink)) {
g_set_error (&priv->construct_error,
NSC_ERROR, NSC_ERROR_INTERNAL_ERROR,
_("Could not link pipeline"));
return;
}
priv->rebuild_pipeline = FALSE;
}
static void
build_pipeline (SjExtractor *extractor)
{
SjExtractorPrivate *priv;
GstBus *bus;
g_return_if_fail (SJ_IS_EXTRACTOR (extractor));
priv = extractor->priv;
if (priv->pipeline != NULL) {
gst_object_unref (GST_OBJECT (priv->pipeline));
}
priv->pipeline = gst_pipeline_new ("pipeline");
bus = gst_element_get_bus (priv->pipeline);
gst_bus_add_signal_watch (bus);
g_signal_connect (G_OBJECT (bus), "message::error", G_CALLBACK (error_cb), extractor);
/* Read from CD */
priv->cdsrc = gst_element_make_from_uri (GST_URI_SRC, "cdda://1", "cd_src", NULL);
if (priv->cdsrc == NULL) {
g_set_error (&priv->construct_error,
SJ_ERROR, SJ_ERROR_INTERNAL_ERROR,
_("Could not create GStreamer CD reader"));
return;
}
g_object_set (G_OBJECT (priv->cdsrc), "device", priv->device_path, NULL);
if (g_object_class_find_property (G_OBJECT_GET_CLASS (priv->cdsrc), "paranoia-mode")) {
g_object_set (G_OBJECT (priv->cdsrc), "paranoia-mode", priv->paranoia_mode, NULL);
}
/* Get the track format for seeking later */
priv->track_format = gst_format_get_by_nick ("track");
g_assert (priv->track_format != 0);
/* Encode */
priv->encodebin = build_encoder (extractor);
if (priv->encodebin == NULL) {
g_set_error (&priv->construct_error,
SJ_ERROR, SJ_ERROR_INTERNAL_ERROR,
_("Could not create GStreamer encoders for %s"),
gst_encoding_profile_get_name (priv->profile));
return;
}
/* Connect to the eos so we know when its finished */
g_signal_connect (bus, "message::eos", G_CALLBACK (eos_cb), extractor);
/* Write to disk */
priv->filesink = gst_element_factory_make (FILE_SINK, "file_sink");
if (priv->filesink == NULL) {
g_set_error (&priv->construct_error,
SJ_ERROR, SJ_ERROR_INTERNAL_ERROR,
_("Could not create GStreamer file output"));
return;
}
#if 0
g_signal_connect (G_OBJECT (priv->filesink), "allow-overwrite", G_CALLBACK (just_say_yes), extractor);
#endif
/* Add the elements to the pipeline */
gst_bin_add_many (GST_BIN (priv->pipeline), priv->cdsrc, priv->encodebin, priv->filesink, NULL);
/* Link it all together */
if (!gst_element_link_many (priv->cdsrc, priv->encodebin, priv->filesink, NULL)) {
g_set_error (&priv->construct_error,
SJ_ERROR, SJ_ERROR_INTERNAL_ERROR,
_("Could not link pipeline"));
return;
}
priv->rebuild_pipeline = FALSE;
}
