/* GStreamer * Copyright (C) <2011> Sebastian Dröge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstplaysinkaudioconvert.h" #include #include GST_DEBUG_CATEGORY_STATIC (gst_play_sink_audio_convert_debug); #define GST_CAT_DEFAULT gst_play_sink_audio_convert_debug #define parent_class gst_play_sink_audio_convert_parent_class G_DEFINE_TYPE (GstPlaySinkAudioConvert, gst_play_sink_audio_convert, GST_TYPE_PLAY_SINK_CONVERT_BIN); enum { PROP_0, PROP_USE_CONVERTERS, PROP_USE_VOLUME, PROP_VOLUME_ELEMENT, }; static gboolean gst_play_sink_audio_convert_add_conversion_elements (GstPlaySinkAudioConvert * self) { GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self); GstElement *el, *prev = NULL; g_assert (cbin->conversion_elements == NULL); GST_DEBUG_OBJECT (self, "Building audio conversion with use-converters %d, use-volume %d", self->use_converters, self->use_volume); if (self->use_converters) { el = gst_play_sink_convert_bin_add_conversion_element_factory (cbin, "audioconvert", "conv"); if (el) { prev = el; } el = gst_play_sink_convert_bin_add_conversion_element_factory (cbin, "audioresample", "resample"); if (el) { if (prev) { if (!gst_element_link_pads_full (prev, "src", el, "sink", GST_PAD_LINK_CHECK_TEMPLATE_CAPS)) goto link_failed; } prev = el; } } if (self->use_volume && self->volume) { el = self->volume; gst_play_sink_convert_bin_add_conversion_element (cbin, el); if (prev) { if (!gst_element_link_pads_full (prev, "src", el, "sink", GST_PAD_LINK_CHECK_TEMPLATE_CAPS)) goto link_failed; } prev = el; } return TRUE; link_failed: return FALSE; } static void gst_play_sink_audio_convert_finalize (GObject * object) { GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (object); if (self->volume) gst_object_unref (self->volume); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_play_sink_audio_convert_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (object); gboolean v, changed = FALSE; GST_PLAY_SINK_CONVERT_BIN_LOCK (self); switch (prop_id) { case PROP_USE_CONVERTERS: v = g_value_get_boolean (value); if (v != self->use_converters) { self->use_converters = v; changed = TRUE; } break; case PROP_USE_VOLUME: v = g_value_get_boolean (value); if (v != self->use_volume) { self->use_volume = v; changed = TRUE; } break; default: break; } if (changed) { GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self); GST_DEBUG_OBJECT (self, "Rebuilding converter bin"); gst_play_sink_convert_bin_remove_elements (cbin); gst_play_sink_audio_convert_add_conversion_elements (self); gst_play_sink_convert_bin_add_identity (cbin); gst_play_sink_convert_bin_cache_converter_caps (cbin); } GST_PLAY_SINK_CONVERT_BIN_UNLOCK (self); } static void gst_play_sink_audio_convert_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (object); GST_PLAY_SINK_CONVERT_BIN_LOCK (self); switch (prop_id) { case PROP_USE_CONVERTERS: g_value_set_boolean (value, self->use_converters); break; case PROP_USE_VOLUME: g_value_set_boolean (value, self->use_volume); break; case PROP_VOLUME_ELEMENT: g_value_set_object (value, self->volume); break; default: break; } GST_PLAY_SINK_CONVERT_BIN_UNLOCK (self); } static void gst_play_sink_audio_convert_class_init (GstPlaySinkAudioConvertClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GST_DEBUG_CATEGORY_INIT (gst_play_sink_audio_convert_debug, "playsinkaudioconvert", 0, "play bin"); gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gobject_class->finalize = gst_play_sink_audio_convert_finalize; gobject_class->set_property = gst_play_sink_audio_convert_set_property; gobject_class->get_property = gst_play_sink_audio_convert_get_property; g_object_class_install_property (gobject_class, PROP_USE_CONVERTERS, g_param_spec_boolean ("use-converters", "Use converters", "Whether to use conversion elements", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_USE_VOLUME, g_param_spec_boolean ("use-volume", "Use volume", "Whether to use a volume element", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_VOLUME_ELEMENT, g_param_spec_object ("volume-element", "Volume element", "Retrieve the soft-volume element used when use-volume=TRUE", GST_TYPE_ELEMENT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_static_metadata (gstelement_class, "Player Sink Audio Converter", "Audio/Bin/Converter", "Convenience bin for audio conversion", "Sebastian Dröge "); } static void gst_play_sink_audio_convert_init (GstPlaySinkAudioConvert * self) { GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self); cbin->audio = TRUE; /* FIXME: Only create this on demand but for now we need * it to always exist because of playsink's volume proxying * logic. */ self->volume = gst_element_factory_make ("volume", "volume"); if (self->volume) gst_object_ref_sink (self->volume); gst_play_sink_audio_convert_add_conversion_elements (self); gst_play_sink_convert_bin_cache_converter_caps (cbin); }