Commit b7811566 authored by Nicolas Dufresne's avatar Nicolas Dufresne

Implement GstV4l2Transform

Implement a v4l2 element that wraps HW video converters.
parent 0028de80
......@@ -11,6 +11,7 @@ libgstvideo4linux2_la_SOURCES = gstv4l2.c \
gstv4l2src.c \
gstv4l2radio.c \
gstv4l2tuner.c \
gstv4l2transform.c \
gstv4l2videodec.c \
gstv4l2vidorient.c \
v4l2_calls.c \
......@@ -50,6 +51,7 @@ noinst_HEADERS = \
gstv4l2src.h \
gstv4l2radio.h \
gstv4l2tuner.h \
gstv4l2transform.h \
gstv4l2videodec.h \
gstv4l2vidorient.h \
v4l2_calls.h \
......
......@@ -44,6 +44,7 @@
#include "gstv4l2radio.h"
#include "gstv4l2videodec.h"
#include "gstv4l2devicemonitor.h"
#include "gstv4l2transform.h"
/* used in v4l2_calls.c and v4l2src_calls.c */
GST_DEBUG_CATEGORY (v4l2_debug);
......@@ -148,6 +149,9 @@ gst_v4l2_probe_and_register (GstPlugin * plugin)
if (gst_v4l2_is_video_dec (sink_caps, src_caps))
ret = gst_v4l2_video_dec_register (plugin, basename, it->device_path,
sink_caps, src_caps);
else if (gst_v4l2_is_transform (sink_caps, src_caps))
ret = gst_v4l2_transform_register (plugin, basename, it->device_path,
sink_caps, src_caps);
/* else if ( ... etc. */
gst_caps_unref (sink_caps);
......
......@@ -1539,6 +1539,10 @@ gst_v4l2_object_add_aspect_ratio (GstV4l2Object * v4l2object, GstStructure * s)
num = cropcap.pixelaspect.numerator;
den = cropcap.pixelaspect.denominator;
/* Ignore PAR that are 0/0 */
if (den == 0)
return;
done:
gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, num, den,
NULL);
......
This diff is collapsed.
/*
* Copyright (C) 2014 Collabora Ltd.
* Author: Nicolas Dufresne <nicolas.dufresne@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.
*
*/
#ifndef __GST_V4L2_TRANSFORM_H__
#define __GST_V4L2_TRANSFORM_H__
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gstv4l2object.h>
#include <gstv4l2bufferpool.h>
GST_DEBUG_CATEGORY_EXTERN (v4l2transform_debug);
G_BEGIN_DECLS
#define GST_TYPE_V4L2_TRANSFORM \
(gst_v4l2_transform_get_type())
#define GST_V4L2_TRANSFORM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2_TRANSFORM,GstV4l2Transform))
#define GST_V4L2_TRANSFORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2_TRANSFORM,GstV4l2TransformClass))
#define GST_IS_V4L2_TRANSFORM(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2_TRANSFORM))
#define GST_IS_V4L2_TRANSFORM_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2_TRANSFORM))
#define GST_V4L2_TRANSFORM_GET_CLASS(inst) \
(G_TYPE_INSTANCE_GET_CLASS ((inst),GST_TYPE_V4L2_TRANSFORM,GstV4l2TransformClass))
typedef struct _GstV4l2Transform GstV4l2Transform;
typedef struct _GstV4l2TransformClass GstV4l2TransformClass;
struct _GstV4l2Transform
{
GstBaseTransform parent;
/* < private > */
GstV4l2Object * v4l2output;
GstV4l2Object * v4l2capture;
/* pads */
GstCaps *probed_srccaps;
GstCaps *probed_sinkcaps;
};
struct _GstV4l2TransformClass
{
GstBaseTransformClass parent_class;
gchar *default_device;
};
GType gst_v4l2_transform_get_type (void);
gboolean gst_v4l2_is_transform (GstCaps * sink_caps, GstCaps * src_caps);
gboolean gst_v4l2_transform_register (GstPlugin * plugin,
const gchar *basename,
const gchar *device_path,
GstCaps * sink_caps, GstCaps * src_caps);
G_END_DECLS
#endif /* __GST_V4L2_TRANSFORM_H__ */
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