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211 lines
6.2 KiB
C
211 lines
6.2 KiB
C
/* GStreamer
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* Copyright (C) <2011> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstplaysinkaudioconvert.h"
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#include <gst/pbutils/pbutils.h>
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#include <gst/gst-i18n-plugin.h>
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GST_DEBUG_CATEGORY_STATIC (gst_play_sink_audio_convert_debug);
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#define GST_CAT_DEFAULT gst_play_sink_audio_convert_debug
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#define parent_class gst_play_sink_audio_convert_parent_class
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G_DEFINE_TYPE (GstPlaySinkAudioConvert, gst_play_sink_audio_convert,
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GST_TYPE_PLAY_SINK_CONVERT_BIN);
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enum
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{
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PROP_0,
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PROP_USE_CONVERTERS,
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PROP_USE_VOLUME,
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};
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static gboolean
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gst_play_sink_audio_convert_add_conversion_elements (GstPlaySinkAudioConvert *
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self)
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{
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GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self);
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GstElement *el, *prev = NULL;
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g_assert (cbin->conversion_elements == NULL);
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GST_DEBUG_OBJECT (self,
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"Building audio conversion with use-converters %d, use-volume %d",
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self->use_converters, self->use_volume);
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if (self->use_converters) {
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el = gst_play_sink_convert_bin_add_conversion_element_factory (cbin,
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"audioconvert", "conv");
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if (el) {
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prev = el;
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}
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el = gst_play_sink_convert_bin_add_conversion_element_factory (cbin,
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"audioresample", "resample");
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if (el) {
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if (prev) {
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if (!gst_element_link_pads_full (prev, "src", el, "sink",
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GST_PAD_LINK_CHECK_TEMPLATE_CAPS))
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goto link_failed;
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}
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prev = el;
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}
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}
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if (self->use_volume && self->volume) {
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el = self->volume;
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gst_play_sink_convert_bin_add_conversion_element (cbin, el);
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if (prev) {
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if (!gst_element_link_pads_full (prev, "src", el, "sink",
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GST_PAD_LINK_CHECK_TEMPLATE_CAPS))
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goto link_failed;
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}
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prev = el;
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}
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return TRUE;
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link_failed:
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return FALSE;
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}
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static void
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gst_play_sink_audio_convert_finalize (GObject * object)
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{
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GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (object);
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if (self->volume)
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gst_object_unref (self->volume);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_play_sink_audio_convert_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (object);
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gboolean v, changed = FALSE;
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GST_PLAY_SINK_CONVERT_BIN_LOCK (self);
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switch (prop_id) {
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case PROP_USE_CONVERTERS:
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v = g_value_get_boolean (value);
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if (v != self->use_converters) {
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self->use_converters = v;
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changed = TRUE;
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}
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break;
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case PROP_USE_VOLUME:
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v = g_value_get_boolean (value);
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if (v != self->use_volume) {
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self->use_volume = v;
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changed = TRUE;
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}
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break;
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default:
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break;
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}
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if (changed) {
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GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self);
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GST_DEBUG_OBJECT (self, "Rebuilding converter bin");
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gst_play_sink_convert_bin_remove_elements (cbin);
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gst_play_sink_audio_convert_add_conversion_elements (self);
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gst_play_sink_convert_bin_add_identity (cbin);
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gst_play_sink_convert_bin_cache_converter_caps (cbin);
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}
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GST_PLAY_SINK_CONVERT_BIN_UNLOCK (self);
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}
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static void
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gst_play_sink_audio_convert_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstPlaySinkAudioConvert *self = GST_PLAY_SINK_AUDIO_CONVERT_CAST (object);
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GST_PLAY_SINK_CONVERT_BIN_LOCK (self);
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switch (prop_id) {
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case PROP_USE_CONVERTERS:
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g_value_set_boolean (value, self->use_converters);
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break;
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case PROP_USE_VOLUME:
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g_value_set_boolean (value, self->use_volume);
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break;
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default:
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break;
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}
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GST_PLAY_SINK_CONVERT_BIN_UNLOCK (self);
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}
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static void
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gst_play_sink_audio_convert_class_init (GstPlaySinkAudioConvertClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GST_DEBUG_CATEGORY_INIT (gst_play_sink_audio_convert_debug,
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"playsinkaudioconvert", 0, "play bin");
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gobject_class->finalize = gst_play_sink_audio_convert_finalize;
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gobject_class->set_property = gst_play_sink_audio_convert_set_property;
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gobject_class->get_property = gst_play_sink_audio_convert_get_property;
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g_object_class_install_property (gobject_class, PROP_USE_CONVERTERS,
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g_param_spec_boolean ("use-converters", "Use converters",
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"Whether to use conversion elements", FALSE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_USE_VOLUME,
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g_param_spec_boolean ("use-volume", "Use volume",
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"Whether to use a volume element", FALSE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (gstelement_class,
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"Player Sink Audio Converter", "Audio/Bin/Converter",
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"Convenience bin for audio conversion",
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"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
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}
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static void
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gst_play_sink_audio_convert_init (GstPlaySinkAudioConvert * self)
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{
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GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self);
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cbin->audio = TRUE;
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/* FIXME: Only create this on demand but for now we need
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* it to always exist because of playsink's volume proxying
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* logic.
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*/
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self->volume = gst_element_factory_make ("volume", "volume");
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if (self->volume)
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gst_object_ref_sink (self->volume);
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gst_play_sink_audio_convert_add_conversion_elements (self);
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gst_play_sink_convert_bin_cache_converter_caps (cbin);
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}
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