mirror of
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222 lines
6.4 KiB
C
222 lines
6.4 KiB
C
/*
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* Copyright (C) 2017 Collabora Inc.
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* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include "gstv4l2object.h"
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#include "gstv4l2mpeg4enc.h"
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#include <string.h>
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#include <gst/gst-i18n-plugin.h>
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GST_DEBUG_CATEGORY_STATIC (gst_v4l2_mpeg4_enc_debug);
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#define GST_CAT_DEFAULT gst_v4l2_mpeg4_enc_debug
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static GstStaticCaps src_template_caps =
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GST_STATIC_CAPS ("video/mpeg, mpegversion=(int)4, systemstream=(boolean)FALSE");
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enum
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{
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PROP_0,
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V4L2_STD_OBJECT_PROPS,
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/* TODO */
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};
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#define gst_v4l2_mpeg4_enc_parent_class parent_class
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G_DEFINE_TYPE (GstV4l2Mpeg4Enc, gst_v4l2_mpeg4_enc, GST_TYPE_V4L2_VIDEO_ENC);
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static void
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gst_v4l2_mpeg4_enc_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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/* TODO */
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}
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static void
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gst_v4l2_mpeg4_enc_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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/* TODO */
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}
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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_MPEG4_PROFILE_SIMPLE;
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else if (g_str_equal (profile, "advanced-simple"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_SIMPLE;
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else if (g_str_equal (profile, "core"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_CORE;
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else if (g_str_equal (profile, "simple-scalable"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE_SCALABLE;
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else if (g_str_equal (profile, "advanced-coding-efficiency"))
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v4l2_profile = V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY;
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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_MPEG4_PROFILE_SIMPLE:
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return "simple";
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case V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_SIMPLE:
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return "advanced-simple";
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case V4L2_MPEG_VIDEO_MPEG4_PROFILE_CORE:
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return "core";
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case V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE_SCALABLE:
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return "simple-scalable";
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case V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY:
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return "advanced-coding-efficiency";
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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, "0"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_0;
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else if (g_str_equal (level, "0b"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_0B;
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else if (g_str_equal (level, "1"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_1;
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else if (g_str_equal (level, "2"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_2;
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else if (g_str_equal (level, "3"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_3;
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else if (g_str_equal (level, "3b"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_3B;
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else if (g_str_equal (level, "4"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_4;
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else if (g_str_equal (level, "5"))
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v4l2_level = V4L2_MPEG_VIDEO_MPEG4_LEVEL_5;
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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_MPEG4_LEVEL_0:
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return "0";
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case V4L2_MPEG_VIDEO_MPEG4_LEVEL_0B:
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return "0b";
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case V4L2_MPEG_VIDEO_MPEG4_LEVEL_1:
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return "1";
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case V4L2_MPEG_VIDEO_MPEG4_LEVEL_2:
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return "2";
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case V4L2_MPEG_VIDEO_MPEG4_LEVEL_3:
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return "3";
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case V4L2_MPEG_VIDEO_MPEG4_LEVEL_3B:
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return "3b";
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case V4L2_MPEG_VIDEO_MPEG4_LEVEL_4:
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return "4";
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case V4L2_MPEG_VIDEO_MPEG4_LEVEL_5:
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return "5";
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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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static void
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gst_v4l2_mpeg4_enc_init (GstV4l2Mpeg4Enc * self)
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{
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}
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static void
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gst_v4l2_mpeg4_enc_class_init (GstV4l2Mpeg4EncClass * klass)
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{
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GstElementClass *element_class;
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GObjectClass *gobject_class;
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GstV4l2VideoEncClass *baseclass;
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parent_class = g_type_class_peek_parent (klass);
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element_class = (GstElementClass *) klass;
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gobject_class = (GObjectClass *) klass;
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baseclass = (GstV4l2VideoEncClass *) (klass);
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GST_DEBUG_CATEGORY_INIT (gst_v4l2_mpeg4_enc_debug, "v4l2mpeg4enc", 0,
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"V4L2 MPEG4 Encoder");
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gst_element_class_set_static_metadata (element_class,
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"V4L2 MPEG4 Encoder",
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"Codec/Encoder/Video",
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"Encode MPEG4 video streams via V4L2 API",
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"Nicolas Dufresne <nicolas.dufresne@collabora.com");
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gobject_class->set_property =
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GST_DEBUG_FUNCPTR (gst_v4l2_mpeg4_enc_set_property);
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gobject_class->get_property =
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GST_DEBUG_FUNCPTR (gst_v4l2_mpeg4_enc_get_property);
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baseclass->codec_name = "MPEG4";
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baseclass->profile_cid = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
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baseclass->profile_to_string = v4l2_profile_to_string;
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baseclass->profile_from_string = v4l2_profile_from_string;
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baseclass->level_cid = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
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baseclass->level_to_string = v4l2_level_to_string;
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baseclass->level_from_string = v4l2_level_from_string;
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}
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/* Probing functions */
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gboolean
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gst_v4l2_is_mpeg4_enc (GstCaps * sink_caps, GstCaps * src_caps)
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{
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return gst_v4l2_is_video_enc (sink_caps, src_caps,
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gst_static_caps_get (&src_template_caps));
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}
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void
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gst_v4l2_mpeg4_enc_register (GstPlugin * plugin, const gchar * basename,
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const gchar * device_path, GstCaps * sink_caps, GstCaps * src_caps)
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{
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gst_v4l2_video_enc_register (plugin, GST_TYPE_V4L2_MPEG4_ENC,
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"mpeg4", basename, device_path, sink_caps,
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gst_static_caps_get (&src_template_caps), src_caps);
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}
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