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269 lines
7.4 KiB
C
269 lines
7.4 KiB
C
/* GStreamer
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* Copyright (C) 2011 David Schleef <ds@schleef.org>
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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 Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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/**
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* SECTION:element-gstvideofilter2
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*
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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 <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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#include <gst/video/video.h>
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#include "gstvideofilter2.h"
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GST_DEBUG_CATEGORY_STATIC (gst_video_filter2_debug_category);
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#define GST_CAT_DEFAULT gst_video_filter2_debug_category
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/* prototypes */
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static void gst_video_filter2_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_video_filter2_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_video_filter2_dispose (GObject * object);
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static void gst_video_filter2_finalize (GObject * object);
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static GstCaps *gst_video_filter2_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps);
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static gboolean
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gst_video_filter2_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
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guint * size);
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static gboolean
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gst_video_filter2_set_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps);
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static gboolean gst_video_filter2_start (GstBaseTransform * trans);
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static gboolean gst_video_filter2_stop (GstBaseTransform * trans);
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static GstFlowReturn gst_video_filter2_transform (GstBaseTransform * trans,
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GstBuffer * inbuf, GstBuffer * outbuf);
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static GstFlowReturn gst_video_filter2_transform_ip (GstBaseTransform * trans,
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GstBuffer * buf);
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enum
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{
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PROP_0
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};
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/* class initialization */
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_video_filter2_debug_category, "videofilter2", 0, \
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"debug category for videofilter2 element");
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GST_BOILERPLATE_FULL (GstVideoFilter2, gst_video_filter2, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
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static void
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gst_video_filter2_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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int i;
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GstCaps *caps = NULL;
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caps = gst_caps_new_empty ();
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for (i = GST_VIDEO_FORMAT_I420; i <= GST_VIDEO_FORMAT_I420; i++) {
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gst_caps_append (caps, gst_video_format_new_template_caps (i));
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}
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gst_element_class_add_pad_template (element_class,
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gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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gst_caps_ref (caps)));
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gst_element_class_add_pad_template (element_class,
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gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
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}
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static void
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gst_video_filter2_class_init (GstVideoFilter2Class * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseTransformClass *base_transform_class =
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GST_BASE_TRANSFORM_CLASS (klass);
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gobject_class->set_property = gst_video_filter2_set_property;
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gobject_class->get_property = gst_video_filter2_get_property;
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gobject_class->dispose = gst_video_filter2_dispose;
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gobject_class->finalize = gst_video_filter2_finalize;
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base_transform_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_video_filter2_transform_caps);
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base_transform_class->get_unit_size =
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GST_DEBUG_FUNCPTR (gst_video_filter2_get_unit_size);
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base_transform_class->set_caps =
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GST_DEBUG_FUNCPTR (gst_video_filter2_set_caps);
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base_transform_class->start = GST_DEBUG_FUNCPTR (gst_video_filter2_start);
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base_transform_class->stop = GST_DEBUG_FUNCPTR (gst_video_filter2_stop);
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base_transform_class->transform =
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GST_DEBUG_FUNCPTR (gst_video_filter2_transform);
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base_transform_class->transform_ip =
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GST_DEBUG_FUNCPTR (gst_video_filter2_transform_ip);
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}
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static void
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gst_video_filter2_init (GstVideoFilter2 * videofilter2,
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GstVideoFilter2Class * videofilter2_class)
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{
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gst_base_transform_set_qos_enabled (GST_BASE_TRANSFORM (videofilter2), TRUE);
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}
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void
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gst_video_filter2_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_video_filter2_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_video_filter2_dispose (GObject * object)
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{
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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void
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gst_video_filter2_finalize (GObject * object)
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{
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g_return_if_fail (GST_IS_VIDEO_FILTER2 (object));
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/* clean up object here */
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstCaps *
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gst_video_filter2_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps)
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{
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return gst_caps_ref (caps);
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}
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static gboolean
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gst_video_filter2_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
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guint * size)
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{
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GstVideoFormat format;
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gint width, height;
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gboolean ret;
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ret = gst_video_format_parse_caps (caps, &format, &width, &height);
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*size = gst_video_format_get_size (format, width, height);
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return ret;
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}
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static gboolean
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gst_video_filter2_set_caps (GstBaseTransform * trans, GstCaps * incaps,
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GstCaps * outcaps)
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{
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GstVideoFilter2 *videofilter2;
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gboolean ret;
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int width;
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int height;
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GstVideoFormat format;
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g_return_val_if_fail (GST_IS_VIDEO_FILTER2 (trans), FALSE);
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videofilter2 = GST_VIDEO_FILTER2 (trans);
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ret = gst_video_format_parse_caps (incaps, &format, &width, &height);
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if (ret) {
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videofilter2->format = format;
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videofilter2->width = width;
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videofilter2->height = height;
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}
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return ret;
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}
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static gboolean
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gst_video_filter2_start (GstBaseTransform * trans)
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{
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return FALSE;
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}
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static gboolean
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gst_video_filter2_stop (GstBaseTransform * trans)
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{
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return FALSE;
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}
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static GstFlowReturn
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gst_video_filter2_transform (GstBaseTransform * trans, GstBuffer * inbuf,
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GstBuffer * outbuf)
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{
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return GST_FLOW_ERROR;
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}
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static GstFlowReturn
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gst_video_filter2_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
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{
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GstVideoFilter2 *video_filter2 = GST_VIDEO_FILTER2 (trans);
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GstVideoFilter2Class *klass =
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GST_VIDEO_FILTER2_CLASS (G_OBJECT_GET_CLASS (trans));
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int i;
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GstFlowReturn ret;
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for (i = 0; klass->functions[i].format != GST_VIDEO_FORMAT_UNKNOWN; i++) {
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if (klass->functions[i].format == video_filter2->format) {
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ret = klass->functions[i].filter_ip (video_filter2, buf, 0,
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video_filter2->height);
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return ret;
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}
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}
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return GST_FLOW_ERROR;
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}
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/* API */
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void
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gst_video_filter2_class_add_functions (GstVideoFilter2Class * klass,
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const GstVideoFilter2Functions * functions)
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{
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klass->functions = functions;
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}
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