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v4l2: Add JPEG encoding support

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This commit adds the support for V4L JPEG stateful encoders.
This commit is contained in:
Ezequiel Garcia 2018-09-10 13:18:30 -03:00 committed by Nicolas Dufresne
parent 944debd3db
commit 63535d9086
5 changed files with 188 additions and 0 deletions
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2
sys/v4l2/Makefile.am
View file

@ -18,6 +18,7 @@ libgstvideo4linux2_la_SOURCES = gstv4l2.c \
gstv4l2fwhtenc.c \
gstv4l2h263enc.c \
gstv4l2h264enc.c \
gstv4l2jpegenc.c \
gstv4l2mpeg4enc.c \
gstv4l2vidorient.c \
gstv4l2vp8enc.c \
@ -65,6 +66,7 @@ noinst_HEADERS = \
gstv4l2fwhtenc.h \
gstv4l2h263enc.h \
gstv4l2h264enc.h \
gstv4l2jpegenc.h \
gstv4l2mpeg4enc.h \
gstv4l2vidorient.h \
gstv4l2vp8enc.h \

5
sys/v4l2/gstv4l2.c
View file

@ -50,6 +50,7 @@
#include "gstv4l2fwhtenc.h"
#include "gstv4l2h263enc.h"
#include "gstv4l2h264enc.h"
#include "gstv4l2jpegenc.h"
#include "gstv4l2mpeg4enc.h"
#include "gstv4l2vp8enc.h"
#include "gstv4l2vp9enc.h"
@ -202,6 +203,10 @@ gst_v4l2_probe_and_register (GstPlugin * plugin)
gst_v4l2_h263_enc_register (plugin, basename, it->device_path,
sink_caps, src_caps);
if (gst_v4l2_is_jpeg_enc (sink_caps, src_caps))
gst_v4l2_jpeg_enc_register (plugin, basename, it->device_path,
sink_caps, src_caps);
if (gst_v4l2_is_vp8_enc (sink_caps, src_caps))
gst_v4l2_vp8_enc_register (plugin, basename, it->device_path,
sink_caps, src_caps);

120
sys/v4l2/gstv4l2jpegenc.c Normal file
View file

@ -0,0 +1,120 @@
/*
* Copyright (C) 2018 Collabora Inc.
* Authors:
* Ezequiel Garcia <ezequiel@collabora.com>
* Nicolas Dufresne <nicolas.dufresne@collabora.com>
*
* 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 <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include "gstv4l2object.h"
#include "gstv4l2jpegenc.h"
#include <string.h>
#include <gst/gst-i18n-plugin.h>
GST_DEBUG_CATEGORY_STATIC (gst_v4l2_jpeg_enc_debug);
#define GST_CAT_DEFAULT gst_v4l2_jpeg_enc_debug
static GstStaticCaps src_template_caps =
GST_STATIC_CAPS ("image/jpeg");
enum
{
PROP_0,
V4L2_STD_OBJECT_PROPS,
/* TODO */
};
#define gst_v4l2_jpeg_enc_parent_class parent_class
G_DEFINE_TYPE (GstV4l2JPEGEnc, gst_v4l2_jpeg_enc, GST_TYPE_V4L2_VIDEO_ENC);
static void
gst_v4l2_jpeg_enc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
/* TODO */
}
static void
gst_v4l2_jpeg_enc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
/* TODO */
}
static void
gst_v4l2_jpeg_enc_init (GstV4l2JPEGEnc * self)
{
}
static void
gst_v4l2_jpeg_enc_class_init (GstV4l2JPEGEncClass * klass)
{
GstElementClass *element_class;
GObjectClass *gobject_class;
GstV4l2VideoEncClass *baseclass;
parent_class = g_type_class_peek_parent (klass);
element_class = (GstElementClass *) klass;
gobject_class = (GObjectClass *) klass;
baseclass = (GstV4l2VideoEncClass *) (klass);
GST_DEBUG_CATEGORY_INIT (gst_v4l2_jpeg_enc_debug, "v4l2jpegenc", 0,
"V4L2 JPEG Encoder");
gst_element_class_set_static_metadata (element_class,
"V4L2 JPEG Encoder",
"Codec/Encoder/Video",
"Encode JPEG video streams via V4L2 API",
"Ezequiel Garcia <ezequiel@collabora.com");
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_v4l2_jpeg_enc_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_v4l2_jpeg_enc_get_property);
baseclass->codec_name = "JPEG";
}
/* Probing functions */
gboolean
gst_v4l2_is_jpeg_enc (GstCaps * sink_caps, GstCaps * src_caps)
{
return gst_v4l2_is_video_enc (sink_caps, src_caps,
gst_static_caps_get (&src_template_caps));
}
void
gst_v4l2_jpeg_enc_register (GstPlugin * plugin, const gchar * basename,
const gchar * device_path, GstCaps * sink_caps, GstCaps * src_caps)
{
gst_v4l2_video_enc_register (plugin, GST_TYPE_V4L2_JPEG_ENC,
"jpeg", basename, device_path, sink_caps,
gst_static_caps_get (&src_template_caps), src_caps);
}

60
sys/v4l2/gstv4l2jpegenc.h Normal file
View file

@ -0,0 +1,60 @@
/*
* Copyright (C) 2017 Collabora Inc.
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
*
* 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_JPEG_ENC_H__
#define __GST_V4L2_JPEG_ENC_H__
#include <gst/gst.h>
#include "gstv4l2videoenc.h"
G_BEGIN_DECLS
#define GST_TYPE_V4L2_JPEG_ENC \
(gst_v4l2_jpeg_enc_get_type())
#define GST_V4L2_JPEG_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2_JPEG_ENC,GstV4l2JPEGEnc))
#define GST_V4L2_JPEG_ENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2_JPEG_ENC,GstV4l2JPEGEncClass))
#define GST_IS_V4L2_JPEG_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2_JPEG_ENC))
#define GST_IS_V4L2_JPEG_ENC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2_JPEG_ENC))
typedef struct _GstV4l2JPEGEnc GstV4l2JPEGEnc;
typedef struct _GstV4l2JPEGEncClass GstV4l2JPEGEncClass;
struct _GstV4l2JPEGEnc
{
GstV4l2VideoEnc parent;
};
struct _GstV4l2JPEGEncClass
{
GstV4l2VideoEncClass parent_class;
};
GType gst_v4l2_jpeg_enc_get_type (void);
gboolean gst_v4l2_is_jpeg_enc (GstCaps * sink_caps, GstCaps * src_caps);
void gst_v4l2_jpeg_enc_register (GstPlugin * plugin, const gchar * basename,
const gchar * device_path, GstCaps * sink_caps, GstCaps * src_caps);
G_END_DECLS
#endif /* __GST_V4L2_JPEG_ENC_H__ */

1
sys/v4l2/meson.build
View file

@ -15,6 +15,7 @@ v4l2_sources = [
'gstv4l2fwhtenc.c',
'gstv4l2h263enc.c',
'gstv4l2h264enc.c',
'gstv4l2jpegenc.c',
'gstv4l2mpeg4enc.c',
'gstv4l2vidorient.c',
'gstv4l2vp8enc.c',