| /* GStreamer |
| * Copyright (C) <2011> Sebastian Dröge <sebastian.droege@collabora.co.uk> |
| * |
| * 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 <gst/pbutils/pbutils.h> |
| #include <gst/gst-i18n-plugin.h> |
| |
| 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, |
| }; |
| |
| 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; |
| 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)); |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "Player Sink Audio Converter", "Audio/Bin/Converter", |
| "Convenience bin for audio conversion", |
| "Sebastian Dröge <sebastian.droege@collabora.co.uk>"); |
| } |
| |
| 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); |
| } |