gstreamer/gst/yadif/gstyadif.c

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/* GStreamer
* Copyright (C) 2013 David Schleef <ds@schleef.org>
* Copyright (C) 2013 Rdio, Inc. <ingestions@rd.io>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU 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 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-gstyadif
*
* The yadif element deinterlaces video, using the YADIF deinterlacing
* filter copied from Libav. This element only handles the simple case
* of interlace-mode=interleaved video instead of the more complex
* inverse telecine and deinterlace cases that are handled by the
* deinterlace element.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 -v videotestsrc pattern=ball ! interlace ! yadif ! xvimagesink
* ]|
* This pipeline creates an interlaced test pattern, and then deinterlaces
* it using the yadif filter.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/video/video.h>
#include "gstyadif.h"
GST_DEBUG_CATEGORY_STATIC (gst_yadif_debug_category);
#define GST_CAT_DEFAULT gst_yadif_debug_category
/* prototypes */
static void gst_yadif_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_yadif_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static void gst_yadif_dispose (GObject * object);
static void gst_yadif_finalize (GObject * object);
static GstCaps *gst_yadif_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter);
static gboolean gst_yadif_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps);
static gboolean gst_yadif_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, gsize * size);
static gboolean gst_yadif_start (GstBaseTransform * trans);
static gboolean gst_yadif_stop (GstBaseTransform * trans);
static GstFlowReturn gst_yadif_transform (GstBaseTransform * trans,
GstBuffer * inbuf, GstBuffer * outbuf);
enum
{
PROP_0,
PROP_MODE
};
#define DEFAULT_MODE GST_DEINTERLACE_MODE_AUTO
/* pad templates */
static GstStaticPadTemplate gst_yadif_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{Y42B,I420,Y444}")
",interlace-mode=(string){interleaved,mixed,progressive}")
);
static GstStaticPadTemplate gst_yadif_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{Y42B,I420,Y444}")
",interlace-mode=(string)progressive")
);
#define GST_TYPE_DEINTERLACE_MODES (gst_deinterlace_modes_get_type ())
static GType
gst_deinterlace_modes_get_type (void)
{
static GType deinterlace_modes_type = 0;
static const GEnumValue modes_types[] = {
{GST_DEINTERLACE_MODE_AUTO, "Auto detection", "auto"},
{GST_DEINTERLACE_MODE_INTERLACED, "Force deinterlacing", "interlaced"},
{GST_DEINTERLACE_MODE_DISABLED, "Run in passthrough mode", "disabled"},
{0, NULL, NULL},
};
if (!deinterlace_modes_type) {
deinterlace_modes_type =
g_enum_register_static ("GstYadifModes", modes_types);
}
return deinterlace_modes_type;
}
/* class initialization */
G_DEFINE_TYPE_WITH_CODE (GstYadif, gst_yadif, GST_TYPE_BASE_TRANSFORM,
GST_DEBUG_CATEGORY_INIT (gst_yadif_debug_category, "yadif", 0,
"debug category for yadif element"));
static void
gst_yadif_class_init (GstYadifClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBaseTransformClass *base_transform_class =
GST_BASE_TRANSFORM_CLASS (klass);
/* Setting up pads and setting metadata should be moved to
base_class_init if you intend to subclass this class. */
gst_element_class_add_static_pad_template (GST_ELEMENT_CLASS (klass),
&gst_yadif_sink_template);
gst_element_class_add_static_pad_template (GST_ELEMENT_CLASS (klass),
&gst_yadif_src_template);
gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass),
"YADIF deinterlacer", "Video/Filter",
"Deinterlace video using YADIF filter", "David Schleef <ds@schleef.org>");
gobject_class->set_property = gst_yadif_set_property;
gobject_class->get_property = gst_yadif_get_property;
gobject_class->dispose = gst_yadif_dispose;
gobject_class->finalize = gst_yadif_finalize;
base_transform_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_yadif_transform_caps);
base_transform_class->set_caps = GST_DEBUG_FUNCPTR (gst_yadif_set_caps);
base_transform_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_yadif_get_unit_size);
base_transform_class->start = GST_DEBUG_FUNCPTR (gst_yadif_start);
base_transform_class->stop = GST_DEBUG_FUNCPTR (gst_yadif_stop);
base_transform_class->transform = GST_DEBUG_FUNCPTR (gst_yadif_transform);
g_object_class_install_property (gobject_class, PROP_MODE,
g_param_spec_enum ("mode", "Deinterlace Mode",
"Deinterlace mode",
GST_TYPE_DEINTERLACE_MODES,
DEFAULT_MODE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
}
static void
gst_yadif_init (GstYadif * yadif)
{
}
void
gst_yadif_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstYadif *yadif = GST_YADIF (object);
switch (property_id) {
case PROP_MODE:
yadif->mode = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_yadif_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstYadif *yadif = GST_YADIF (object);
switch (property_id) {
case PROP_MODE:
g_value_set_enum (value, yadif->mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_yadif_dispose (GObject * object)
{
/* GstYadif *yadif = GST_YADIF (object); */
/* clean up as possible. may be called multiple times */
G_OBJECT_CLASS (gst_yadif_parent_class)->dispose (object);
}
void
gst_yadif_finalize (GObject * object)
{
/* GstYadif *yadif = GST_YADIF (object); */
/* clean up object here */
G_OBJECT_CLASS (gst_yadif_parent_class)->finalize (object);
}
static GstCaps *
gst_yadif_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstCaps *othercaps;
othercaps = gst_caps_copy (caps);
if (direction == GST_PAD_SRC) {
GValue value = G_VALUE_INIT;
GValue v = G_VALUE_INIT;
g_value_init (&value, GST_TYPE_LIST);
g_value_init (&v, G_TYPE_STRING);
g_value_set_string (&v, "interleaved");
gst_value_list_append_value (&value, &v);
g_value_set_string (&v, "mixed");
gst_value_list_append_value (&value, &v);
g_value_set_string (&v, "progressive");
gst_value_list_append_value (&value, &v);
gst_caps_set_value (othercaps, "interlace-mode", &value);
g_value_unset (&value);
g_value_unset (&v);
} else {
gst_caps_set_simple (othercaps, "interlace-mode", G_TYPE_STRING,
"progressive", NULL);
}
return othercaps;
}
static gboolean
gst_yadif_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps)
{
GstYadif *yadif = GST_YADIF (trans);
gst_video_info_from_caps (&yadif->video_info, incaps);
return TRUE;
}
static gboolean
gst_yadif_get_unit_size (GstBaseTransform * trans, GstCaps * caps, gsize * size)
{
GstVideoInfo info;
if (gst_video_info_from_caps (&info, caps)) {
*size = GST_VIDEO_INFO_SIZE (&info);
return TRUE;
}
return FALSE;
}
static gboolean
gst_yadif_start (GstBaseTransform * trans)
{
return TRUE;
}
static gboolean
gst_yadif_stop (GstBaseTransform * trans)
{
return TRUE;
}
void yadif_filter (GstYadif * yadif, int parity, int tff);
static GstFlowReturn
gst_yadif_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf)
{
GstYadif *yadif = GST_YADIF (trans);
int parity;
int tff;
parity = 0;
tff = 0;
if (!gst_video_frame_map (&yadif->dest_frame, &yadif->video_info, outbuf,
GST_MAP_WRITE))
goto dest_map_failed;
if (!gst_video_frame_map (&yadif->cur_frame, &yadif->video_info, inbuf,
GST_MAP_READ))
goto src_map_failed;
yadif->next_frame = yadif->cur_frame;
yadif->prev_frame = yadif->cur_frame;
yadif_filter (yadif, parity, tff);
gst_video_frame_unmap (&yadif->dest_frame);
gst_video_frame_unmap (&yadif->cur_frame);
return GST_FLOW_OK;
dest_map_failed:
{
GST_ERROR_OBJECT (yadif, "failed to map dest");
return GST_FLOW_ERROR;
}
src_map_failed:
{
GST_ERROR_OBJECT (yadif, "failed to map src");
gst_video_frame_unmap (&yadif->dest_frame);
return GST_FLOW_ERROR;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "yadif", GST_RANK_NONE, GST_TYPE_YADIF);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
yadif,
"YADIF deinterlacing filter",
plugin_init, VERSION, "GPL", PACKAGE_NAME, GST_PACKAGE_ORIGIN)