/* 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 "gstplaysinkvideoconvert.h" #include #include GST_DEBUG_CATEGORY_STATIC (gst_play_sink_video_convert_debug); #define GST_CAT_DEFAULT gst_play_sink_video_convert_debug #define parent_class gst_play_sink_video_convert_parent_class G_DEFINE_TYPE (GstPlaySinkVideoConvert, gst_play_sink_video_convert, GST_TYPE_PLAY_SINK_CONVERT_BIN); enum { PROP_0, PROP_USE_CONVERTERS, PROP_USE_BALANCE, }; static gboolean gst_play_sink_video_convert_add_conversion_elements (GstPlaySinkVideoConvert * self) { GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self); GstElement *el, *prev = NULL; g_assert (cbin->conversion_elements == NULL); GST_DEBUG_OBJECT (self, "Building video conversion with use-converters %d, use-balance %d", self->use_converters, self->use_balance); if (self->use_converters) { el = gst_play_sink_convert_bin_add_conversion_element_factory (cbin, COLORSPACE, "conv"); if (el) prev = el; el = gst_play_sink_convert_bin_add_conversion_element_factory (cbin, "videoscale", "scale"); if (el) { /* Add black borders if necessary to keep the DAR */ g_object_set (el, "add-borders", TRUE, NULL); 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_balance && self->balance) { el = self->balance; 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; el = gst_play_sink_convert_bin_add_conversion_element_factory (cbin, COLORSPACE, "conv2"); if (prev) { if (!gst_element_link_pads_full (prev, "src", el, "sink", GST_PAD_LINK_CHECK_TEMPLATE_CAPS)) goto link_failed; } if (el) prev = el; } return TRUE; link_failed: return FALSE; } static void gst_play_sink_video_convert_finalize (GObject * object) { GstPlaySinkVideoConvert *self = GST_PLAY_SINK_VIDEO_CONVERT_CAST (object); if (self->balance) gst_object_unref (self->balance); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_play_sink_video_convert_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstPlaySinkVideoConvert *self = GST_PLAY_SINK_VIDEO_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_BALANCE: v = g_value_get_boolean (value); if (v != self->use_balance) { self->use_balance = 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_video_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_video_convert_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstPlaySinkVideoConvert *self = GST_PLAY_SINK_VIDEO_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_BALANCE: g_value_set_boolean (value, self->use_balance); break; default: break; } GST_PLAY_SINK_CONVERT_BIN_UNLOCK (self); } static void gst_play_sink_video_convert_class_init (GstPlaySinkVideoConvertClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GST_DEBUG_CATEGORY_INIT (gst_play_sink_video_convert_debug, "playsinkvideoconvert", 0, "play bin"); gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gobject_class->finalize = gst_play_sink_video_convert_finalize; gobject_class->set_property = gst_play_sink_video_convert_set_property; gobject_class->get_property = gst_play_sink_video_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_BALANCE, g_param_spec_boolean ("use-balance", "Use balance", "Whether to use a videobalance element", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_static_metadata (gstelement_class, "Player Sink Video Converter", "Video/Bin/Converter", "Convenience bin for video conversion", "Sebastian Dröge "); } static void gst_play_sink_video_convert_init (GstPlaySinkVideoConvert * self) { GstPlaySinkConvertBin *cbin = GST_PLAY_SINK_CONVERT_BIN (self); cbin->audio = FALSE; /* FIXME: Only create this on demand but for now we need * it to always exist because of playsink's color balance * proxying logic. */ self->balance = gst_element_factory_make ("videobalance", "videobalance"); if (self->balance) gst_object_ref_sink (self->balance); gst_play_sink_video_convert_add_conversion_elements (self); gst_play_sink_convert_bin_cache_converter_caps (cbin); }