| /* GStreamer |
| * Copyright (C) 2011 David A. Schleef <ds@schleef.org> |
| * |
| * 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 Street, Suite 500, |
| * Boston, MA 02110-1335, USA. |
| */ |
| /** |
| * SECTION:element-gstintervideosink |
| * |
| * The intervideosink element is a video sink element. It is used |
| * in connection with an intervideosrc element in a different pipeline, |
| * similar to interaudiosink and interaudiosrc. |
| * |
| * <refsect2> |
| * <title>Example launch line</title> |
| * |[ |
| * gst-launch -v videotestsrc ! intervideosink |
| * ]| |
| * |
| * The intervideosink element cannot be used effectively with gst-launch, |
| * as it requires a second pipeline in the application to send video to. |
| * See the gstintertest.c example in the gst-plugins-bad source code for |
| * more details. |
| * </refsect2> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gstintervideosink.h" |
| |
| #include <string.h> |
| |
| GST_DEBUG_CATEGORY_STATIC (gst_inter_video_sink_debug_category); |
| #define GST_CAT_DEFAULT gst_inter_video_sink_debug_category |
| |
| /* prototypes */ |
| static void gst_inter_video_sink_set_property (GObject * object, |
| guint property_id, const GValue * value, GParamSpec * pspec); |
| static void gst_inter_video_sink_get_property (GObject * object, |
| guint property_id, GValue * value, GParamSpec * pspec); |
| static void gst_inter_video_sink_finalize (GObject * object); |
| |
| static void gst_inter_video_sink_get_times (GstBaseSink * sink, |
| GstBuffer * buffer, GstClockTime * start, GstClockTime * end); |
| static gboolean gst_inter_video_sink_start (GstBaseSink * sink); |
| static gboolean gst_inter_video_sink_stop (GstBaseSink * sink); |
| static gboolean gst_inter_video_sink_set_caps (GstBaseSink * sink, |
| GstCaps * caps); |
| static GstFlowReturn gst_inter_video_sink_show_frame (GstVideoSink * sink, |
| GstBuffer * buffer); |
| |
| enum |
| { |
| PROP_0, |
| PROP_CHANNEL |
| }; |
| |
| #define DEFAULT_CHANNEL ("default") |
| |
| /* pad templates */ |
| static GstStaticPadTemplate gst_inter_video_sink_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL)) |
| ); |
| |
| |
| /* class initialization */ |
| G_DEFINE_TYPE (GstInterVideoSink, gst_inter_video_sink, GST_TYPE_VIDEO_SINK); |
| |
| static void |
| gst_inter_video_sink_class_init (GstInterVideoSinkClass * klass) |
| { |
| GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
| GstElementClass *element_class = GST_ELEMENT_CLASS (klass); |
| GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass); |
| GstVideoSinkClass *video_sink_class = GST_VIDEO_SINK_CLASS (klass); |
| |
| GST_DEBUG_CATEGORY_INIT (gst_inter_video_sink_debug_category, |
| "intervideosink", 0, "debug category for intervideosink element"); |
| |
| gst_element_class_add_pad_template (element_class, |
| gst_static_pad_template_get (&gst_inter_video_sink_sink_template)); |
| |
| gst_element_class_set_static_metadata (element_class, |
| "Internal video sink", |
| "Sink/Video", |
| "Virtual video sink for internal process communication", |
| "David Schleef <ds@schleef.org>"); |
| |
| gobject_class->set_property = gst_inter_video_sink_set_property; |
| gobject_class->get_property = gst_inter_video_sink_get_property; |
| gobject_class->finalize = gst_inter_video_sink_finalize; |
| base_sink_class->get_times = |
| GST_DEBUG_FUNCPTR (gst_inter_video_sink_get_times); |
| base_sink_class->start = GST_DEBUG_FUNCPTR (gst_inter_video_sink_start); |
| base_sink_class->stop = GST_DEBUG_FUNCPTR (gst_inter_video_sink_stop); |
| base_sink_class->set_caps = GST_DEBUG_FUNCPTR (gst_inter_video_sink_set_caps); |
| video_sink_class->show_frame = |
| GST_DEBUG_FUNCPTR (gst_inter_video_sink_show_frame); |
| |
| g_object_class_install_property (gobject_class, PROP_CHANNEL, |
| g_param_spec_string ("channel", "Channel", |
| "Channel name to match inter src and sink elements", |
| DEFAULT_CHANNEL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| } |
| |
| static void |
| gst_inter_video_sink_init (GstInterVideoSink * intervideosink) |
| { |
| intervideosink->channel = g_strdup (DEFAULT_CHANNEL); |
| } |
| |
| void |
| gst_inter_video_sink_set_property (GObject * object, guint property_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (object); |
| |
| switch (property_id) { |
| case PROP_CHANNEL: |
| g_free (intervideosink->channel); |
| intervideosink->channel = g_value_dup_string (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); |
| break; |
| } |
| } |
| |
| void |
| gst_inter_video_sink_get_property (GObject * object, guint property_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (object); |
| |
| switch (property_id) { |
| case PROP_CHANNEL: |
| g_value_set_string (value, intervideosink->channel); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); |
| break; |
| } |
| } |
| |
| void |
| gst_inter_video_sink_finalize (GObject * object) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (object); |
| |
| /* clean up object here */ |
| g_free (intervideosink->channel); |
| |
| G_OBJECT_CLASS (gst_inter_video_sink_parent_class)->finalize (object); |
| } |
| |
| |
| static void |
| gst_inter_video_sink_get_times (GstBaseSink * sink, GstBuffer * buffer, |
| GstClockTime * start, GstClockTime * end) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink); |
| |
| if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) { |
| *start = GST_BUFFER_TIMESTAMP (buffer); |
| if (GST_BUFFER_DURATION_IS_VALID (buffer)) { |
| *end = *start + GST_BUFFER_DURATION (buffer); |
| } else { |
| if (intervideosink->info.fps_n > 0) { |
| *end = *start + |
| gst_util_uint64_scale_int (GST_SECOND, intervideosink->info.fps_d, |
| intervideosink->info.fps_n); |
| } |
| } |
| } |
| } |
| |
| static gboolean |
| gst_inter_video_sink_start (GstBaseSink * sink) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink); |
| |
| intervideosink->surface = gst_inter_surface_get (intervideosink->channel); |
| g_mutex_lock (&intervideosink->surface->mutex); |
| memset (&intervideosink->surface->video_info, 0, sizeof (GstVideoInfo)); |
| g_mutex_unlock (&intervideosink->surface->mutex); |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_inter_video_sink_stop (GstBaseSink * sink) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink); |
| |
| g_mutex_lock (&intervideosink->surface->mutex); |
| if (intervideosink->surface->video_buffer) { |
| gst_buffer_unref (intervideosink->surface->video_buffer); |
| } |
| intervideosink->surface->video_buffer = NULL; |
| memset (&intervideosink->surface->video_info, 0, sizeof (GstVideoInfo)); |
| g_mutex_unlock (&intervideosink->surface->mutex); |
| |
| gst_inter_surface_unref (intervideosink->surface); |
| intervideosink->surface = NULL; |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_inter_video_sink_set_caps (GstBaseSink * sink, GstCaps * caps) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink); |
| GstVideoInfo info; |
| |
| if (!gst_video_info_from_caps (&info, caps)) { |
| GST_ERROR_OBJECT (sink, "Failed to parse caps %" GST_PTR_FORMAT, caps); |
| return FALSE; |
| } |
| |
| g_mutex_lock (&intervideosink->surface->mutex); |
| intervideosink->surface->video_info = info; |
| intervideosink->info = info; |
| g_mutex_unlock (&intervideosink->surface->mutex); |
| |
| return TRUE; |
| } |
| |
| static GstFlowReturn |
| gst_inter_video_sink_show_frame (GstVideoSink * sink, GstBuffer * buffer) |
| { |
| GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink); |
| |
| GST_DEBUG_OBJECT (intervideosink, "render ts %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (GST_BUFFER_PTS (buffer))); |
| |
| g_mutex_lock (&intervideosink->surface->mutex); |
| if (intervideosink->surface->video_buffer) { |
| gst_buffer_unref (intervideosink->surface->video_buffer); |
| } |
| intervideosink->surface->video_buffer = gst_buffer_ref (buffer); |
| intervideosink->surface->video_buffer_count = 0; |
| g_mutex_unlock (&intervideosink->surface->mutex); |
| |
| return GST_FLOW_OK; |
| } |