gstreamer/sys/v4l2/gstv4l2mpeg4enc.c
2019-03-18 10:51:15 +00:00

222 lines
6.4 KiB
C

/*
* 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.
*
*/
#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 "gstv4l2mpeg4enc.h"
#include <string.h>
#include <gst/gst-i18n-plugin.h>
GST_DEBUG_CATEGORY_STATIC (gst_v4l2_mpeg4_enc_debug);
#define GST_CAT_DEFAULT gst_v4l2_mpeg4_enc_debug
static GstStaticCaps src_template_caps =
GST_STATIC_CAPS ("video/mpeg, mpegversion=(int)4, systemstream=(boolean)FALSE");
enum
{
PROP_0,
V4L2_STD_OBJECT_PROPS,
/* TODO */
};
#define gst_v4l2_mpeg4_enc_parent_class parent_class
G_DEFINE_TYPE (GstV4l2Mpeg4Enc, gst_v4l2_mpeg4_enc, GST_TYPE_V4L2_VIDEO_ENC);
static void
gst_v4l2_mpeg4_enc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
/* TODO */
}
static void
gst_v4l2_mpeg4_enc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
/* TODO */
}
static gint
v4l2_profile_from_string (const gchar * profile)
{
gint v4l2_profile = -1;
if (g_str_equal (profile, "simple"))
v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE;
else if (g_str_equal (profile, "advanced-simple"))
v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_SIMPLE;
else if (g_str_equal (profile, "core"))
v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_CORE;
else if (g_str_equal (profile, "simple-scalable"))
v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE_SCALABLE;
else if (g_str_equal (profile, "advanced-coding-efficiency"))
v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY;
else
GST_WARNING ("Unsupported profile string '%s'", profile);
return v4l2_profile;
}
static const gchar *
v4l2_profile_to_string (gint v4l2_profile)
{
switch (v4l2_profile) {
case V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE:
return "simple";
case V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_SIMPLE:
return "advanced-simple";
case V4L2_MPEG_VIDEO_MPEG4_PROFILE_CORE:
return "core";
case V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE_SCALABLE:
return "simple-scalable";
case V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY:
return "advanced-coding-efficiency";
default:
GST_WARNING ("Unsupported V4L2 profile %i", v4l2_profile);
break;
}
return NULL;
}
static gint
v4l2_level_from_string (const gchar * level)
{
gint v4l2_level = -1;
if (g_str_equal (level, "0"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_0;
else if (g_str_equal (level, "0b"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_0B;
else if (g_str_equal (level, "1"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_1;
else if (g_str_equal (level, "2"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_2;
else if (g_str_equal (level, "3"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_3;
else if (g_str_equal (level, "3b"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_3B;
else if (g_str_equal (level, "4"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_4;
else if (g_str_equal (level, "5"))
v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_5;
else
GST_WARNING ("Unsupported level '%s'", level);
return v4l2_level;
}
static const gchar *
v4l2_level_to_string (gint v4l2_level)
{
switch (v4l2_level) {
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_0:
return "0";
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_0B:
return "0b";
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_1:
return "1";
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_2:
return "2";
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_3:
return "3";
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_3B:
return "3b";
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_4:
return "4";
case V4L2_MPEG_VIDEO_MPEG4_LEVEL_5:
return "5";
default:
GST_WARNING ("Unsupported V4L2 level %i", v4l2_level);
break;
}
return NULL;
}
static void
gst_v4l2_mpeg4_enc_init (GstV4l2Mpeg4Enc * self)
{
}
static void
gst_v4l2_mpeg4_enc_class_init (GstV4l2Mpeg4EncClass * 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_mpeg4_enc_debug, "v4l2mpeg4enc", 0,
"V4L2 MPEG4 Encoder");
gst_element_class_set_static_metadata (element_class,
"V4L2 MPEG4 Encoder",
"Codec/Encoder/Video/Hardware",
"Encode MPEG4 video streams via V4L2 API",
"Nicolas Dufresne <nicolas.dufresne@collabora.com");
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_v4l2_mpeg4_enc_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_v4l2_mpeg4_enc_get_property);
baseclass->codec_name = "MPEG4";
baseclass->profile_cid = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
baseclass->profile_to_string = v4l2_profile_to_string;
baseclass->profile_from_string = v4l2_profile_from_string;
baseclass->level_cid = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
baseclass->level_to_string = v4l2_level_to_string;
baseclass->level_from_string = v4l2_level_from_string;
}
/* Probing functions */
gboolean
gst_v4l2_is_mpeg4_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_mpeg4_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_MPEG4_ENC,
"mpeg4", basename, device_path, sink_caps,
gst_static_caps_get (&src_template_caps), src_caps);
}