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128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
/*
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* Copyright (C) 2019 Philipp Zabel <philipp.zabel@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "gstv4l2mpeg2codec.h"
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#include <gst/gst.h>
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#include "ext/v4l2-controls.h"
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static gint
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v4l2_profile_from_string (const gchar * profile)
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{
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gint v4l2_profile = -1;
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if (g_str_equal (profile, "simple"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_SIMPLE;
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else if (g_str_equal (profile, "main"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_MAIN;
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else if (g_str_equal (profile, "snr"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_SNR_SCALABLE;
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else if (g_str_equal (profile, "spatial"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_SPATIALLY_SCALABLE;
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else if (g_str_equal (profile, "high"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH;
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else if (g_str_equal (profile, "multiview"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG2_PROFILE_MULTIVIEW;
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else
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GST_WARNING ("Unsupported profile string '%s'", profile);
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return v4l2_profile;
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}
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static const gchar *
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v4l2_profile_to_string (gint v4l2_profile)
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{
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switch (v4l2_profile) {
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case V4L2_MPEG_VIDEO_MPEG2_PROFILE_SIMPLE:
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return "simple";
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case V4L2_MPEG_VIDEO_MPEG2_PROFILE_MAIN:
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return "main";
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case V4L2_MPEG_VIDEO_MPEG2_PROFILE_SNR_SCALABLE:
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return "snr";
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case V4L2_MPEG_VIDEO_MPEG2_PROFILE_SPATIALLY_SCALABLE:
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return "spatial";
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case V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH:
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return "high";
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case V4L2_MPEG_VIDEO_MPEG2_PROFILE_MULTIVIEW:
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return "multiview";
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default:
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GST_WARNING ("Unsupported V4L2 profile %i", v4l2_profile);
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break;
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}
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return NULL;
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}
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static gint
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v4l2_level_from_string (const gchar * level)
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{
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gint v4l2_level = -1;
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if (g_str_equal (level, "low"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_LOW;
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else if (g_str_equal (level, "main"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_MAIN;
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else if (g_str_equal (level, "high-1440"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH_1440;
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else if (g_str_equal (level, "high"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH;
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else
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GST_WARNING ("Unsupported level '%s'", level);
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return v4l2_level;
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}
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static const gchar *
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v4l2_level_to_string (gint v4l2_level)
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{
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switch (v4l2_level) {
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case V4L2_MPEG_VIDEO_MPEG2_LEVEL_LOW:
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return "low";
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case V4L2_MPEG_VIDEO_MPEG2_LEVEL_MAIN:
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return "main";
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case V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH_1440:
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return "high-1440";
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case V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH:
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return "high";
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default:
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GST_WARNING ("Unsupported V4L2 level %i", v4l2_level);
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break;
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}
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return NULL;
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}
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const GstV4l2Codec *
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gst_v4l2_mpeg2_get_codec (void)
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{
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static GstV4l2Codec *codec = NULL;
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if (g_once_init_enter (&codec)) {
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static GstV4l2Codec c;
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c.profile_cid = V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE;
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c.profile_to_string = v4l2_profile_to_string;
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c.profile_from_string = v4l2_profile_from_string;
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c.level_cid = V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL;
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c.level_to_string = v4l2_level_to_string;
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c.level_from_string = v4l2_level_from_string;
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g_once_init_leave (&codec, &c);
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}
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return codec;
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}
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