mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-29 19:50:40 +00:00
127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/*
|
|
* Copyright (C) 2019 Philipp Zabel <philipp.zabel@gmail.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.
|
|
*
|
|
*/
|
|
|
|
#include "gstv4l2mpeg2codec.h"
|
|
|
|
#include <gst/gst.h>
|
|
#include "ext/v4l2-controls.h"
|
|
|
|
static gint
|
|
v4l2_profile_from_string (const gchar * profile)
|
|
{
|
|
gint v4l2_profile = -1;
|
|
|
|
if (g_str_equal (profile, "simple"))
|
|
v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_SIMPLE;
|
|
else if (g_str_equal (profile, "main"))
|
|
v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_MAIN;
|
|
else if (g_str_equal (profile, "snr"))
|
|
v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_SNR_SCALABLE;
|
|
else if (g_str_equal (profile, "spatial"))
|
|
v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_SPATIALLY_SCALABLE;
|
|
else if (g_str_equal (profile, "high"))
|
|
v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH;
|
|
else if (g_str_equal (profile, "multiview"))
|
|
v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_MULTIVIEW;
|
|
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_MPEG2_PROFILE_SIMPLE:
|
|
return "simple";
|
|
case V4L2_MPEG_VIDEO_MPEG2_PROFILE_MAIN:
|
|
return "main";
|
|
case V4L2_MPEG_VIDEO_MPEG2_PROFILE_SNR_SCALABLE:
|
|
return "snr";
|
|
case V4L2_MPEG_VIDEO_MPEG2_PROFILE_SPATIALLY_SCALABLE:
|
|
return "spatial";
|
|
case V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH:
|
|
return "high";
|
|
case V4L2_MPEG_VIDEO_MPEG2_PROFILE_MULTIVIEW:
|
|
return "multiview";
|
|
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, "low"))
|
|
v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_LOW;
|
|
else if (g_str_equal (level, "main"))
|
|
v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_MAIN;
|
|
else if (g_str_equal (level, "high-1440"))
|
|
v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH_1440;
|
|
else if (g_str_equal (level, "high"))
|
|
v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH;
|
|
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_MPEG2_LEVEL_LOW:
|
|
return "low";
|
|
case V4L2_MPEG_VIDEO_MPEG2_LEVEL_MAIN:
|
|
return "main";
|
|
case V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH_1440:
|
|
return "high-1440";
|
|
case V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH:
|
|
return "high";
|
|
default:
|
|
GST_WARNING ("Unsupported V4L2 level %i", v4l2_level);
|
|
break;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const GstV4l2Codec *
|
|
gst_v4l2_mpeg2_get_codec (void)
|
|
{
|
|
static GstV4l2Codec *codec = NULL;
|
|
if (g_once_init_enter (&codec)) {
|
|
static GstV4l2Codec c;
|
|
c.profile_cid = V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE;
|
|
c.profile_to_string = v4l2_profile_to_string;
|
|
c.profile_from_string = v4l2_profile_from_string;
|
|
c.level_cid = V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL;
|
|
c.level_to_string = v4l2_level_to_string;
|
|
c.level_from_string = v4l2_level_from_string;
|
|
g_once_init_leave (&codec, &c);
|
|
}
|
|
return codec;
|
|
}
|