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6ce195e9d1
There used to be some profile/level support in encoders. This code was moved to GstV4l2Codecs and is now also used for decoders. The caps templates for the H.264, H.265, MPEG4, VP8 and VP9 encoders and decoders should now reflect the profiles and levels advertised by the kernel.
125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
/*
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* Copyright (C) 2019 Igalia S.L.
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* Author: Philippe Normand <philn@igalia.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 <fcntl.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "gstv4l2codec.h"
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#include "ext/videodev2.h"
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#include <gst/gst.h>
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static GValue *
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probe_controls (gint video_fd, guint32 cid,
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const gchar * (transform_control) (gint))
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{
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GValue *controls = NULL;
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struct v4l2_queryctrl query_ctrl;
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memset (&query_ctrl, 0, sizeof (query_ctrl));
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query_ctrl.id = cid;
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if (ioctl (video_fd, VIDIOC_QUERYCTRL, &query_ctrl) == 0) {
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if (query_ctrl.flags & V4L2_CTRL_FLAG_DISABLED) {
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return NULL;
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}
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if (query_ctrl.type == V4L2_CTRL_TYPE_MENU) {
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struct v4l2_querymenu query_menu;
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memset (&query_menu, 0, sizeof (query_menu));
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query_menu.id = query_ctrl.id;
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controls = g_new0 (GValue, 1);
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g_value_init (controls, GST_TYPE_LIST);
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for (query_menu.index = query_ctrl.minimum;
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query_menu.index <= query_ctrl.maximum; query_menu.index++) {
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if (ioctl (video_fd, VIDIOC_QUERYMENU, &query_menu) >= 0) {
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GValue value = G_VALUE_INIT;
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g_value_init (&value, G_TYPE_STRING);
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g_value_set_string (&value, transform_control (query_menu.index));
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gst_value_list_append_and_take_value (controls, &value);
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}
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}
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if (gst_value_list_get_size (controls) == 0) {
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g_value_unset (controls);
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controls = NULL;
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}
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}
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}
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return controls;
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}
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GValue *
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gst_v4l2_codec_probe_profiles (const GstV4l2Codec * codec, gint video_fd)
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{
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return probe_controls (video_fd, codec->profile_cid,
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codec->profile_to_string);
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}
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GValue *
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gst_v4l2_codec_probe_levels (const GstV4l2Codec * codec, gint video_fd)
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{
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GValue *controls = NULL;
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struct v4l2_queryctrl query_ctrl;
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memset (&query_ctrl, 0, sizeof (query_ctrl));
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query_ctrl.id = codec->level_cid;
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if (ioctl (video_fd, VIDIOC_QUERYCTRL, &query_ctrl) == 0) {
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if (query_ctrl.flags & V4L2_CTRL_FLAG_DISABLED) {
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return NULL;
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}
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if (query_ctrl.type == V4L2_CTRL_TYPE_MENU) {
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struct v4l2_querymenu query_menu;
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memset (&query_menu, 0, sizeof (query_menu));
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query_menu.id = query_ctrl.id;
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query_menu.index = query_ctrl.maximum;
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if (ioctl (video_fd, VIDIOC_QUERYMENU, &query_menu) >= 0) {
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controls = g_new0 (GValue, 1);
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g_value_init (controls, GST_TYPE_LIST);
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/* Assume that all levels below the highest one reported by the driver are supported. */
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for (gint32 i = query_ctrl.minimum; i <= query_ctrl.maximum; i++) {
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GValue value = G_VALUE_INIT;
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g_value_init (&value, G_TYPE_STRING);
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g_value_set_string (&value, codec->level_to_string (i));
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gst_value_list_append_and_take_value (controls, &value);
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}
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}
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}
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}
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return controls;
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}
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