mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 02:31:03 +00:00
v4l2: Add interface for MPEG4 encoding
This commit is contained in:
Nicolas Dufresne
parent
1762c2e713
commit
c5d0264bc9
7 changed files with 524 additions and 3 deletions
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@ -16,6 +16,7 @@ libgstvideo4linux2_la_SOURCES = gstv4l2.c \
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gstv4l2videodec.c \
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gstv4l2videoenc.c \
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gstv4l2h264enc.c \
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gstv4l2mpeg4enc.c \
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gstv4l2vidorient.c \
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v4l2_calls.c \
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v4l2-utils.c \
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@ -48,6 +48,7 @@
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#include "gstv4l2radio.h"
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#include "gstv4l2videodec.h"
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#include "gstv4l2h264enc.h"
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#include "gstv4l2mpeg4enc.h"
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#include "gstv4l2deviceprovider.h"
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#include "gstv4l2transform.h"
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@ -185,9 +186,14 @@ gst_v4l2_probe_and_register (GstPlugin * plugin)
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if (gst_v4l2_is_video_dec (sink_caps, src_caps)) {
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gst_v4l2_video_dec_register (plugin, basename, it->device_path,
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sink_caps, src_caps);
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} else if (gst_v4l2_is_h264_enc (sink_caps, src_caps)) {
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} else if (gst_v4l2_is_video_enc (sink_caps, src_caps)) {
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if (gst_v4l2_is_h264_enc (sink_caps, src_caps))
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gst_v4l2_h264_enc_register (plugin, basename, it->device_path,
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sink_caps, src_caps);
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if (gst_v4l2_is_mpeg4_enc (sink_caps, src_caps))
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gst_v4l2_mpeg4_enc_register (plugin, basename, it->device_path,
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sink_caps, src_caps);
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} else if (gst_v4l2_is_transform (sink_caps, src_caps)) {
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gst_v4l2_transform_register (plugin, basename, it->device_path,
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sink_caps, src_caps);
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437
sys/v4l2/gstv4l2mpeg4enc.c
Normal file
437
sys/v4l2/gstv4l2mpeg4enc.c
Normal file
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@ -0,0 +1,437 @@
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/*
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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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struct ProfileLevelCtx
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{
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GstV4l2Mpeg4Enc *self;
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const gchar *profile;
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const gchar *level;
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};
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static gboolean
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get_string_list (GstStructure * s, const gchar * field, GQueue * queue)
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{
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const GValue *value;
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value = gst_structure_get_value (s, field);
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if (!value)
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return FALSE;
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if (GST_VALUE_HOLDS_LIST (value)) {
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guint i;
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if (gst_value_list_get_size (value) == 0)
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return FALSE;
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for (i = 0; i < gst_value_list_get_size (value); i++) {
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const GValue *item = gst_value_list_get_value (value, i);
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if (G_VALUE_HOLDS_STRING (item))
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g_queue_push_tail (queue, g_value_dup_string (item));
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}
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} else if (G_VALUE_HOLDS_STRING (value)) {
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g_queue_push_tail (queue, g_value_dup_string (value));
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}
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return TRUE;
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}
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static gboolean
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negotiate_profile_and_level (GstCapsFeatures * features, GstStructure * s,
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gpointer user_data)
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{
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struct ProfileLevelCtx *ctx = user_data;
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GstV4l2Object *v4l2object = GST_V4L2_VIDEO_ENC (ctx->self)->v4l2output;
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GQueue profiles = G_QUEUE_INIT;
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GQueue levels = G_QUEUE_INIT;
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gboolean failed = FALSE;
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if (get_string_list (s, "profile", &profiles)) {
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GList *l;
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for (l = profiles.head; l; l = l->next) {
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struct v4l2_control control = { 0, };
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gint v4l2_profile;
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const gchar *profile = l->data;
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GST_TRACE_OBJECT (ctx->self, "Trying profile %s", profile);
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control.id = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
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control.value = v4l2_profile = v4l2_profile_from_string (profile);
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if (control.value < 0)
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continue;
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if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_S_CTRL, &control) < 0) {
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GST_WARNING_OBJECT (ctx->self, "Failed to set MPEG4 profile: '%s'",
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g_strerror (errno));
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break;
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}
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profile = v4l2_profile_to_string (control.value);
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if (control.value == v4l2_profile) {
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ctx->profile = profile;
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break;
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}
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if (g_list_find_custom (l, profile, g_str_equal)) {
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ctx->profile = profile;
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break;
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}
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}
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if (profiles.length && !ctx->profile)
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failed = TRUE;
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g_queue_foreach (&profiles, (GFunc) g_free, NULL);
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g_queue_clear (&profiles);
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}
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if (!failed && get_string_list (s, "level", &levels)) {
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GList *l;
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for (l = levels.head; l; l = l->next) {
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struct v4l2_control control = { 0, };
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gint v4l2_level;
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const gchar *level = l->data;
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GST_TRACE_OBJECT (ctx->self, "Trying level %s", level);
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control.id = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
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control.value = v4l2_level = v4l2_level_from_string (level);
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if (control.value < 0)
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continue;
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if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_S_CTRL, &control) < 0) {
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GST_WARNING_OBJECT (ctx->self, "Failed to set MPEG4 level: '%s'",
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g_strerror (errno));
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break;
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}
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level = v4l2_level_to_string (control.value);
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if (control.value == v4l2_level) {
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ctx->level = level;
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break;
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}
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if (g_list_find_custom (l, level, g_str_equal)) {
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ctx->level = level;
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break;
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}
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}
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if (levels.length && !ctx->level)
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failed = TRUE;
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g_queue_foreach (&levels, (GFunc) g_free, NULL);
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g_queue_clear (&levels);
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}
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/* If it failed, we continue */
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return failed;
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}
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static gboolean
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gst_v4l2_mpeg4_enc_negotiate (GstVideoEncoder * encoder)
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{
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GstV4l2Mpeg4Enc *self = GST_V4L2_MPEG4_ENC (encoder);
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GstV4l2VideoEnc *venc = GST_V4L2_VIDEO_ENC (encoder);
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GstV4l2Object *v4l2object = venc->v4l2output;
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GstCaps *allowed_caps;
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struct ProfileLevelCtx ctx = { self, NULL, NULL };
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GstVideoCodecState *state;
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GstStructure *s;
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GST_DEBUG_OBJECT (self, "Negotiating MPEG4 profile and level.");
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allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
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if (allowed_caps) {
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if (gst_caps_is_empty (allowed_caps))
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goto not_negotiated;
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allowed_caps = gst_caps_make_writable (allowed_caps);
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/* negotiate_profile_and_level() will return TRUE on failure to keep
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* iterating, if gst_caps_foreach() returns TRUE it means there was no
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* compatible profile and level in any of the structure */
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if (gst_caps_foreach (allowed_caps, negotiate_profile_and_level, &ctx)) {
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goto no_profile_level;
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}
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}
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if (!ctx.profile) {
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struct v4l2_control control = { 0, };
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control.id = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
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if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) < 0)
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goto g_ctrl_failed;
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ctx.profile = v4l2_profile_to_string (control.value);
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}
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if (!ctx.level) {
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struct v4l2_control control = { 0, };
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control.id = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
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if (v4l2object->ioctl (v4l2object->video_fd, VIDIOC_G_CTRL, &control) < 0)
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goto g_ctrl_failed;
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ctx.level = v4l2_level_to_string (control.value);
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}
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GST_DEBUG_OBJECT (self, "Selected MPEG4 profile %s at level %s",
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ctx.profile, ctx.level);
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state = gst_video_encoder_get_output_state (encoder);
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s = gst_caps_get_structure (state->caps, 0);
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gst_structure_set (s, "profile", G_TYPE_STRING, ctx.profile,
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"level", G_TYPE_STRING, ctx.level, NULL);
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return GST_VIDEO_ENCODER_CLASS (parent_class)->negotiate (encoder);
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g_ctrl_failed:
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GST_WARNING_OBJECT (self, "Failed to get MPEG4 profile and level: '%s'",
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g_strerror (errno));
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goto not_negotiated;
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no_profile_level:
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GST_WARNING_OBJECT (self, "No compatible level and profiled in caps: %"
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GST_PTR_FORMAT, allowed_caps);
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goto not_negotiated;
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not_negotiated:
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if (allowed_caps)
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gst_caps_unref (allowed_caps);
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return FALSE;
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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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GstVideoEncoderClass *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 = GST_VIDEO_ENCODER_CLASS (klass);
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|
||||
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",
|
||||
"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->negotiate = GST_DEBUG_FUNCPTR (gst_v4l2_mpeg4_enc_negotiate);
|
||||
}
|
||||
|
||||
/* Probing functions */
|
||||
gboolean
|
||||
gst_v4l2_is_mpeg4_enc (GstCaps * sink_caps, GstCaps * src_caps)
|
||||
{
|
||||
gboolean ret = FALSE;
|
||||
GstCaps *codec_caps;
|
||||
|
||||
codec_caps = gst_static_caps_get (&src_template_caps);
|
||||
|
||||
if (gst_caps_is_subset (sink_caps, gst_v4l2_object_get_raw_caps ())
|
||||
&& gst_caps_can_intersect (src_caps, codec_caps))
|
||||
ret = TRUE;
|
||||
|
||||
gst_caps_unref (codec_caps);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
62
sys/v4l2/gstv4l2mpeg4enc.h
Normal file
62
sys/v4l2/gstv4l2mpeg4enc.h
Normal file
|
|
@ -0,0 +1,62 @@
|
|||
/*
|
||||
* 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_MPEG4_ENC_H__
|
||||
#define __GST_V4L2_MPEG4_ENC_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include "gstv4l2videoenc.h"
|
||||
|
||||
GST_DEBUG_CATEGORY_EXTERN (v4l2mpeg4enc_debug);
|
||||
|
||||
G_BEGIN_DECLS
|
||||
#define GST_TYPE_V4L2_MPEG4_ENC \
|
||||
(gst_v4l2_mpeg4_enc_get_type())
|
||||
#define GST_V4L2_MPEG4_ENC(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2_MPEG4_ENC,GstV4l2Mpeg4Enc))
|
||||
#define GST_V4L2_MPEG4_ENC_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2_MPEG4_ENC,GstV4l2Mpeg4EncClass))
|
||||
#define GST_IS_V4L2_MPEG4_ENC(obj) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2_MPEG4_ENC))
|
||||
#define GST_IS_V4L2_MPEG4_ENC_CLASS(obj) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2_MPEG4_ENC))
|
||||
typedef struct _GstV4l2Mpeg4Enc GstV4l2Mpeg4Enc;
|
||||
typedef struct _GstV4l2Mpeg4EncClass GstV4l2Mpeg4EncClass;
|
||||
|
||||
struct _GstV4l2Mpeg4Enc
|
||||
{
|
||||
GstV4l2VideoEnc parent;
|
||||
};
|
||||
|
||||
struct _GstV4l2Mpeg4EncClass
|
||||
{
|
||||
GstV4l2VideoEncClass parent_class;
|
||||
};
|
||||
|
||||
GType gst_v4l2_mpeg4_enc_get_type (void);
|
||||
|
||||
gboolean gst_v4l2_is_mpeg4_enc (GstCaps * sink_caps, GstCaps * src_caps);
|
||||
|
||||
void gst_v4l2_mpeg4_enc_register (GstPlugin * plugin, const gchar * basename,
|
||||
const gchar * device_path, GstCaps * sink_caps, GstCaps * src_caps);
|
||||
|
||||
G_END_DECLS
|
||||
#endif /* __GST_V4L2_MPEG4_ENC_H__ */
|
||||
|
|
@ -903,6 +903,18 @@ gst_v4l2_video_enc_subclass_init (gpointer g_class, gpointer data)
|
|||
}
|
||||
|
||||
/* Probing functions */
|
||||
gboolean
|
||||
gst_v4l2_is_video_enc (GstCaps * sink_caps, GstCaps * src_caps)
|
||||
{
|
||||
gboolean ret = FALSE;
|
||||
|
||||
if (gst_caps_is_subset (sink_caps, gst_v4l2_object_get_raw_caps ())
|
||||
&& gst_caps_is_subset (src_caps, gst_v4l2_object_get_codec_caps ()))
|
||||
ret = TRUE;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void
|
||||
gst_v4l2_video_enc_register (GstPlugin * plugin, GType type,
|
||||
const char *codec, const gchar * basename, const gchar * device_path,
|
||||
|
|
|
|||
|
|
@ -79,6 +79,8 @@ struct _GstV4l2VideoEncClass
|
|||
GType gst_v4l2_video_enc_get_type (void);
|
||||
|
||||
|
||||
gboolean gst_v4l2_is_video_enc (GstCaps * sink_caps, GstCaps * src_caps);
|
||||
|
||||
void gst_v4l2_video_enc_register (GstPlugin * plugin, GType type,
|
||||
const char *codec, const gchar * basename, const gchar * device_path,
|
||||
GstCaps * sink_caps, GstCaps *codec_caps, GstCaps * src_caps);
|
||||
|
|
|
|||
|
|
@ -13,6 +13,7 @@ v4l2_sources = [
|
|||
'gstv4l2videodec.c',
|
||||
'gstv4l2videoenc.c',
|
||||
'gstv4l2h264enc.c',
|
||||
'gstv4l2mpeg4enc.c',
|
||||
'gstv4l2vidorient.c',
|
||||
'v4l2_calls.c',
|
||||
'v4l2-utils.c',
|
||||
|
|
|
|||
Loading…
Reference in a new issue