2020-02-06 02:42:56 +00:00
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/* GStreamer
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* Copyright (C) 2020 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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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2020-02-15 03:03:17 +00:00
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#include "gstv4l2codecallocator.h"
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#include "gstv4l2codecpool.h"
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2020-02-06 02:42:56 +00:00
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#include "gstv4l2decoder.h"
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2020-02-10 23:05:39 +00:00
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#include "gstv4l2format.h"
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2020-02-06 02:42:56 +00:00
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#include "linux/media.h"
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#include "linux/videodev2.h"
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#include <fcntl.h>
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2021-04-06 16:07:52 +00:00
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#include <sys/ioctl.h>
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2020-02-06 02:42:56 +00:00
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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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2020-07-01 16:23:49 +00:00
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#include <gst/base/base.h>
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2022-04-25 13:27:39 +00:00
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#define IMAGE_MINSZ (256*1024) /* 256kB */
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2021-04-22 19:29:20 +00:00
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2020-02-06 02:42:56 +00:00
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GST_DEBUG_CATEGORY (v4l2_decoder_debug);
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#define GST_CAT_DEFAULT v4l2_decoder_debug
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2024-06-20 14:52:46 +00:00
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#define SRC_CAPS \
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GST_VIDEO_DMA_DRM_CAPS_MAKE " ; " \
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GST_VIDEO_CAPS_MAKE (GST_V4L2_DEFAULT_VIDEO_FORMATS)
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static GstStaticCaps default_src_caps = GST_STATIC_CAPS (SRC_CAPS);
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2020-02-06 02:42:56 +00:00
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enum
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{
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PROP_0,
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PROP_MEDIA_DEVICE,
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PROP_VIDEO_DEVICE,
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};
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2020-02-15 03:03:17 +00:00
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struct _GstV4l2Request
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{
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2020-12-18 21:36:16 +00:00
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/* non-thread safe */
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gint ref_count;
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2020-02-15 03:03:17 +00:00
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GstV4l2Decoder *decoder;
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gint fd;
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2020-12-14 22:07:01 +00:00
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guint32 frame_num;
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2020-02-15 03:03:17 +00:00
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GstMemory *bitstream;
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2020-12-14 22:07:01 +00:00
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GstBuffer *pic_buf;
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2020-02-16 19:51:37 +00:00
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GstPoll *poll;
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GstPollFD pollfd;
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2020-12-14 22:07:01 +00:00
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/* request state */
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2020-02-16 19:51:37 +00:00
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gboolean pending;
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2020-12-14 22:07:01 +00:00
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gboolean failed;
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gboolean hold_pic_buf;
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gboolean sub_request;
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2020-02-15 03:03:17 +00:00
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};
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2020-02-06 02:42:56 +00:00
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struct _GstV4l2Decoder
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{
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GstObject parent;
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gboolean opened;
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gint media_fd;
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gint video_fd;
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2024-04-18 14:07:25 +00:00
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GstVecDeque *request_pool;
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GstVecDeque *pending_requests;
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2020-09-30 17:14:41 +00:00
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guint version;
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2020-02-06 02:42:56 +00:00
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2020-04-30 18:18:47 +00:00
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enum v4l2_buf_type src_buf_type;
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enum v4l2_buf_type sink_buf_type;
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gboolean mplane;
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2020-02-06 02:42:56 +00:00
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/* properties */
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gchar *media_device;
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gchar *video_device;
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2021-01-29 14:41:22 +00:00
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guint render_delay;
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2022-03-23 14:36:28 +00:00
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/* detected features */
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gboolean supports_holding_capture;
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2024-05-27 12:28:18 +00:00
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gboolean supports_remove_buffers;
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2020-02-06 02:42:56 +00:00
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};
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G_DEFINE_TYPE_WITH_CODE (GstV4l2Decoder, gst_v4l2_decoder, GST_TYPE_OBJECT,
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GST_DEBUG_CATEGORY_INIT (v4l2_decoder_debug, "v4l2codecs-decoder", 0,
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"V4L2 stateless decoder helper"));
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2020-12-18 21:36:16 +00:00
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static void gst_v4l2_request_free (GstV4l2Request * request);
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2020-02-16 19:51:37 +00:00
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static guint32
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2020-04-30 18:18:47 +00:00
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direction_to_buffer_type (GstV4l2Decoder * self, GstPadDirection direction)
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2020-02-16 19:51:37 +00:00
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{
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if (direction == GST_PAD_SRC)
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2020-04-30 18:18:47 +00:00
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return self->src_buf_type;
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2020-02-16 19:51:37 +00:00
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else
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2020-04-30 18:18:47 +00:00
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return self->sink_buf_type;
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2020-02-16 19:51:37 +00:00
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}
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2020-02-06 02:42:56 +00:00
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static void
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gst_v4l2_decoder_finalize (GObject * obj)
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{
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GstV4l2Decoder *self = GST_V4L2_DECODER (obj);
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2020-02-10 23:05:39 +00:00
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gst_v4l2_decoder_close (self);
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2020-02-06 02:42:56 +00:00
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g_free (self->media_device);
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g_free (self->video_device);
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2024-04-18 14:07:25 +00:00
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gst_vec_deque_free (self->request_pool);
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gst_vec_deque_free (self->pending_requests);
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2020-02-06 02:42:56 +00:00
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G_OBJECT_CLASS (gst_v4l2_decoder_parent_class)->finalize (obj);
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}
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static void
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gst_v4l2_decoder_init (GstV4l2Decoder * self)
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{
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2024-04-18 14:07:25 +00:00
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self->request_pool = gst_vec_deque_new (16);
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self->pending_requests = gst_vec_deque_new (16);
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2020-02-06 02:42:56 +00:00
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}
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static void
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gst_v4l2_decoder_class_init (GstV4l2DecoderClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = gst_v4l2_decoder_finalize;
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gobject_class->get_property = gst_v4l2_decoder_get_property;
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gobject_class->set_property = gst_v4l2_decoder_set_property;
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gst_v4l2_decoder_install_properties (gobject_class, 0, NULL);
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}
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GstV4l2Decoder *
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gst_v4l2_decoder_new (GstV4l2CodecDevice * device)
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{
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GstV4l2Decoder *decoder;
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g_return_val_if_fail (device->function == MEDIA_ENT_F_PROC_VIDEO_DECODER,
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NULL);
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decoder = g_object_new (GST_TYPE_V4L2_DECODER,
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"media-device", device->media_device_path,
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"video-device", device->video_device_path, NULL);
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return gst_object_ref_sink (decoder);
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}
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2020-09-30 17:14:41 +00:00
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guint
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gst_v4l2_decoder_get_version (GstV4l2Decoder * self)
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{
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return self->version;
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}
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2020-02-06 02:42:56 +00:00
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gboolean
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gst_v4l2_decoder_open (GstV4l2Decoder * self)
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{
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2020-04-30 18:18:47 +00:00
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gint ret;
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struct v4l2_capability querycap;
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2024-05-27 11:52:28 +00:00
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struct v4l2_create_buffers createbufs = {
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.count = 0,
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.memory = V4L2_MEMORY_MMAP,
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};
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2020-04-30 18:18:47 +00:00
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guint32 capabilities;
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2020-02-06 02:42:56 +00:00
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self->media_fd = open (self->media_device, 0);
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if (self->media_fd < 0) {
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GST_ERROR_OBJECT (self, "Failed to open '%s': %s",
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self->media_device, g_strerror (errno));
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return FALSE;
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}
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2020-02-16 19:51:37 +00:00
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self->video_fd = open (self->video_device, O_NONBLOCK);
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2020-02-06 02:42:56 +00:00
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if (self->video_fd < 0) {
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GST_ERROR_OBJECT (self, "Failed to open '%s': %s",
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self->video_device, g_strerror (errno));
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return FALSE;
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}
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2020-04-30 18:18:47 +00:00
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ret = ioctl (self->video_fd, VIDIOC_QUERYCAP, &querycap);
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if (ret < 0) {
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GST_ERROR_OBJECT (self, "VIDIOC_QUERYCAP failed: %s", g_strerror (errno));
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gst_v4l2_decoder_close (self);
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return FALSE;
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}
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2020-09-30 17:14:41 +00:00
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self->version = querycap.version;
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2020-04-30 18:18:47 +00:00
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if (querycap.capabilities & V4L2_CAP_DEVICE_CAPS)
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capabilities = querycap.device_caps;
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else
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capabilities = querycap.capabilities;
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if (capabilities & V4L2_CAP_VIDEO_M2M_MPLANE) {
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self->sink_buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
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self->src_buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
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self->mplane = TRUE;
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} else if (capabilities & V4L2_CAP_VIDEO_M2M) {
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self->sink_buf_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
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self->src_buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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self->mplane = FALSE;
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} else {
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GST_ERROR_OBJECT (self, "Unsupported memory-2-memory device.");
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gst_v4l2_decoder_close (self);
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return FALSE;
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}
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2024-05-27 11:52:28 +00:00
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createbufs.format.type = self->sink_buf_type;
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ret = ioctl (self->video_fd, VIDIOC_CREATE_BUFS, &createbufs);
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if (ret < 0) {
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GST_ERROR_OBJECT (self,
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"GStreamer requires VIDIOC_CREATE_BUFS to be supported by stateless decoders.");
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gst_v4l2_decoder_close (self);
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return FALSE;
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}
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2024-05-27 12:28:18 +00:00
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if (createbufs.capabilities & V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS)
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self->supports_remove_buffers = TRUE;
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else
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self->supports_remove_buffers = FALSE;
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2020-02-06 02:42:56 +00:00
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self->opened = TRUE;
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return TRUE;
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}
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2020-02-10 23:05:39 +00:00
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gboolean
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gst_v4l2_decoder_close (GstV4l2Decoder * self)
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{
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2020-02-15 03:03:17 +00:00
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GstV4l2Request *request;
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2024-04-18 14:07:25 +00:00
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while ((request = gst_vec_deque_pop_head (self->pending_requests)))
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2020-12-18 21:36:16 +00:00
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gst_v4l2_request_unref (request);
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2024-04-18 14:07:25 +00:00
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while ((request = gst_vec_deque_pop_head (self->request_pool)))
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2020-02-15 03:03:17 +00:00
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gst_v4l2_request_free (request);
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2020-02-10 23:05:39 +00:00
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if (self->media_fd)
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close (self->media_fd);
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if (self->video_fd)
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2020-04-07 21:10:08 +00:00
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close (self->video_fd);
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2020-02-10 23:05:39 +00:00
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self->media_fd = 0;
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self->video_fd = 0;
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self->opened = FALSE;
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return TRUE;
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}
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2020-02-16 19:51:37 +00:00
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gboolean
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gst_v4l2_decoder_streamon (GstV4l2Decoder * self, GstPadDirection direction)
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{
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gint ret;
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2020-04-30 18:18:47 +00:00
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guint32 type = direction_to_buffer_type (self, direction);
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2020-02-16 19:51:37 +00:00
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ret = ioctl (self->video_fd, VIDIOC_STREAMON, &type);
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if (ret < 0) {
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GST_ERROR_OBJECT (self, "VIDIOC_STREAMON failed: %s", g_strerror (errno));
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return FALSE;
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}
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return TRUE;
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}
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gboolean
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gst_v4l2_decoder_streamoff (GstV4l2Decoder * self, GstPadDirection direction)
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{
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2020-04-30 18:18:47 +00:00
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guint32 type = direction_to_buffer_type (self, direction);
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2020-07-01 16:28:05 +00:00
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gint ret;
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if (direction == GST_PAD_SRC) {
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2020-12-14 22:07:01 +00:00
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GstV4l2Request *pending_req;
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2020-07-01 16:28:05 +00:00
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/* STREAMOFF have the effect of cancelling all requests and unqueuing all
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* buffers, so clear the pending request list */
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2024-04-18 14:07:25 +00:00
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while ((pending_req = gst_vec_deque_pop_head (self->pending_requests))) {
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2020-07-01 16:28:05 +00:00
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g_clear_pointer (&pending_req->bitstream, gst_memory_unref);
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pending_req->pending = FALSE;
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2020-12-18 21:36:16 +00:00
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gst_v4l2_request_unref (pending_req);
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2020-07-01 16:28:05 +00:00
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}
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}
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2020-02-16 19:51:37 +00:00
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ret = ioctl (self->video_fd, VIDIOC_STREAMOFF, &type);
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if (ret < 0) {
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GST_ERROR_OBJECT (self, "VIDIOC_STREAMOFF failed: %s", g_strerror (errno));
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return FALSE;
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}
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return TRUE;
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}
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|
|
2020-03-20 18:14:46 +00:00
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_flush (GstV4l2Decoder * self)
|
|
|
|
{
|
|
|
|
/* We ignore streamoff failure as it's not relevant, if we manage to
|
|
|
|
* streamon again, we are good. */
|
|
|
|
gst_v4l2_decoder_streamoff (self, GST_PAD_SINK);
|
|
|
|
gst_v4l2_decoder_streamoff (self, GST_PAD_SRC);
|
|
|
|
|
|
|
|
return gst_v4l2_decoder_streamon (self, GST_PAD_SINK) &&
|
|
|
|
gst_v4l2_decoder_streamon (self, GST_PAD_SRC);
|
|
|
|
}
|
|
|
|
|
2020-02-06 02:42:56 +00:00
|
|
|
gboolean
|
2020-02-09 16:31:11 +00:00
|
|
|
gst_v4l2_decoder_enum_sink_fmt (GstV4l2Decoder * self, gint i,
|
2020-02-06 02:42:56 +00:00
|
|
|
guint32 * out_fmt)
|
|
|
|
{
|
2020-04-30 18:18:47 +00:00
|
|
|
struct v4l2_fmtdesc fmtdesc = { i, self->sink_buf_type, };
|
2020-02-06 02:42:56 +00:00
|
|
|
gint ret;
|
|
|
|
|
|
|
|
g_return_val_if_fail (self->opened, FALSE);
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_ENUM_FMT, &fmtdesc);
|
|
|
|
if (ret < 0) {
|
|
|
|
if (errno != EINVAL)
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_ENUM_FMT failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Found format %" GST_FOURCC_FORMAT " (%s)",
|
|
|
|
GST_FOURCC_ARGS (fmtdesc.pixelformat), fmtdesc.description);
|
|
|
|
*out_fmt = fmtdesc.pixelformat;
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-02-10 23:05:39 +00:00
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_set_sink_fmt (GstV4l2Decoder * self, guint32 pix_fmt,
|
2020-05-06 16:27:56 +00:00
|
|
|
gint width, gint height, gint pixel_bitdepth)
|
2020-02-10 23:05:39 +00:00
|
|
|
{
|
|
|
|
struct v4l2_format format = (struct v4l2_format) {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = self->sink_buf_type,
|
|
|
|
/* Compatible with .fmt.pix for these field */
|
2020-02-10 23:05:39 +00:00
|
|
|
.fmt.pix_mp = (struct v4l2_pix_format_mplane) {
|
|
|
|
.pixelformat = pix_fmt,
|
|
|
|
.width = width,
|
|
|
|
.height = height,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
gint ret;
|
2021-04-22 19:29:20 +00:00
|
|
|
|
2020-05-06 16:27:56 +00:00
|
|
|
/* Using raw image size for now, it is guarantied to be large enough */
|
2021-04-22 19:29:20 +00:00
|
|
|
gsize sizeimage = MAX (IMAGE_MINSZ, (width * height * pixel_bitdepth) / 8);
|
2020-05-06 16:27:56 +00:00
|
|
|
|
|
|
|
if (self->mplane)
|
|
|
|
format.fmt.pix_mp.plane_fmt[0].sizeimage = sizeimage;
|
|
|
|
else
|
|
|
|
format.fmt.pix.sizeimage = sizeimage;
|
2020-02-10 23:05:39 +00:00
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_S_FMT, &format);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_S_FMT failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (format.fmt.pix_mp.pixelformat != pix_fmt
|
2020-04-28 00:18:52 +00:00
|
|
|
|| format.fmt.pix_mp.width < width || format.fmt.pix_mp.height < height) {
|
2020-02-10 23:05:39 +00:00
|
|
|
GST_WARNING_OBJECT (self, "Failed to set sink format to %"
|
|
|
|
GST_FOURCC_FORMAT " %ix%i", GST_FOURCC_ARGS (pix_fmt), width, height);
|
|
|
|
errno = EINVAL;
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2021-06-22 12:43:29 +00:00
|
|
|
static GstCaps *
|
|
|
|
gst_v4l2_decoder_enum_size_for_format (GstV4l2Decoder * self,
|
|
|
|
guint32 pixelformat, gint index, gint unscaled_width, gint unscaled_height)
|
|
|
|
{
|
|
|
|
struct v4l2_frmsizeenum size;
|
|
|
|
GstVideoFormat format;
|
|
|
|
gint ret;
|
|
|
|
gboolean res;
|
|
|
|
|
|
|
|
memset (&size, 0, sizeof (struct v4l2_frmsizeenum));
|
|
|
|
size.index = index;
|
|
|
|
size.pixel_format = pixelformat;
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "enumerate size index %d for %" GST_FOURCC_FORMAT,
|
|
|
|
index, GST_FOURCC_ARGS (pixelformat));
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_ENUM_FRAMESIZES, &size);
|
|
|
|
|
|
|
|
if (ret < 0)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (size.type != V4L2_FRMSIZE_TYPE_DISCRETE) {
|
|
|
|
GST_WARNING_OBJECT (self, "V4L2_FRMSIZE type not supported");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (gst_util_fraction_compare (unscaled_width, unscaled_height,
|
|
|
|
size.discrete.width, size.discrete.height)) {
|
|
|
|
GST_DEBUG_OBJECT (self,
|
|
|
|
"Pixel ratio modification not supported %dx%d %dx%d (%d)",
|
|
|
|
unscaled_width, unscaled_height, size.discrete.width,
|
|
|
|
size.discrete.height, ret);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
res = gst_v4l2_format_to_video_format (pixelformat, &format);
|
|
|
|
g_assert (res);
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "get size (%d x %d) index %d for %" GST_FOURCC_FORMAT,
|
|
|
|
size.discrete.width, size.discrete.height, index,
|
|
|
|
GST_FOURCC_ARGS (pixelformat));
|
|
|
|
|
2024-02-17 03:20:16 +00:00
|
|
|
return gst_caps_new_simple ("video/x-raw",
|
2021-06-22 12:43:29 +00:00
|
|
|
"width", G_TYPE_INT, size.discrete.width,
|
|
|
|
"height", G_TYPE_INT, size.discrete.height, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
static GstCaps *
|
|
|
|
gst_v4l2_decoder_probe_caps_for_format (GstV4l2Decoder * self,
|
|
|
|
guint32 pixelformat, gint unscaled_width, gint unscaled_height)
|
|
|
|
{
|
|
|
|
gint index = 0;
|
2024-02-17 03:20:16 +00:00
|
|
|
GstCaps *caps, *tmp, *size_caps;
|
2021-06-22 12:43:29 +00:00
|
|
|
GstVideoFormat format;
|
2024-01-06 12:07:16 +00:00
|
|
|
guint32 drm_fourcc;
|
2024-11-12 11:09:46 +00:00
|
|
|
guint64 modifier;
|
2021-06-22 12:43:29 +00:00
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "enumerate size for %" GST_FOURCC_FORMAT,
|
|
|
|
GST_FOURCC_ARGS (pixelformat));
|
|
|
|
|
|
|
|
if (!gst_v4l2_format_to_video_format (pixelformat, &format))
|
|
|
|
return gst_caps_new_empty ();
|
|
|
|
|
|
|
|
caps = gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING,
|
|
|
|
gst_video_format_to_string (format), NULL);
|
|
|
|
|
2024-02-17 03:20:16 +00:00
|
|
|
size_caps = gst_caps_new_empty ();
|
2021-06-22 12:43:29 +00:00
|
|
|
while ((tmp = gst_v4l2_decoder_enum_size_for_format (self, pixelformat,
|
|
|
|
index++, unscaled_width, unscaled_height))) {
|
2024-02-17 03:20:16 +00:00
|
|
|
size_caps = gst_caps_merge (size_caps, tmp);
|
2021-06-22 12:43:29 +00:00
|
|
|
}
|
|
|
|
|
2024-02-17 03:20:16 +00:00
|
|
|
if (!gst_caps_is_empty (size_caps)) {
|
|
|
|
tmp = caps;
|
|
|
|
caps = gst_caps_intersect_full (tmp, size_caps, GST_CAPS_INTERSECT_FIRST);
|
|
|
|
gst_caps_unref (tmp);
|
|
|
|
}
|
|
|
|
|
2024-01-06 12:07:16 +00:00
|
|
|
/* TODO: Add a V4L2 to DRM fourcc translator for formats that we don't support
|
|
|
|
* in software.
|
|
|
|
*/
|
2024-11-12 11:09:46 +00:00
|
|
|
drm_fourcc = gst_video_dma_drm_fourcc_from_format_full (format, &modifier);
|
2024-01-06 12:07:16 +00:00
|
|
|
if (drm_fourcc /* != DRM_FORMAT_INVALID */ ) {
|
|
|
|
GstCaps *drm_caps;
|
|
|
|
|
|
|
|
drm_caps = gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING,
|
|
|
|
"DMA_DRM", "drm-format", G_TYPE_STRING,
|
2024-11-12 11:09:46 +00:00
|
|
|
gst_video_dma_drm_fourcc_to_string (drm_fourcc, modifier), NULL);
|
2024-01-06 12:07:16 +00:00
|
|
|
gst_caps_set_features_simple (drm_caps,
|
2024-09-03 09:16:19 +00:00
|
|
|
gst_caps_features_new_single_static_str
|
|
|
|
(GST_CAPS_FEATURE_MEMORY_DMABUF));
|
2024-01-06 12:07:16 +00:00
|
|
|
|
|
|
|
if (!gst_caps_is_empty (size_caps)) {
|
|
|
|
gst_caps_set_features_simple (size_caps,
|
2024-09-03 09:16:19 +00:00
|
|
|
gst_caps_features_new_single_static_str
|
|
|
|
(GST_CAPS_FEATURE_MEMORY_DMABUF));
|
2024-01-06 12:07:16 +00:00
|
|
|
tmp = drm_caps;
|
|
|
|
drm_caps =
|
|
|
|
gst_caps_intersect_full (tmp, size_caps, GST_CAPS_INTERSECT_FIRST);
|
|
|
|
gst_caps_unref (tmp);
|
|
|
|
}
|
|
|
|
|
|
|
|
caps = gst_caps_merge (drm_caps, caps);
|
|
|
|
}
|
|
|
|
|
2024-02-17 03:20:16 +00:00
|
|
|
gst_caps_unref (size_caps);
|
|
|
|
|
2021-06-22 12:43:29 +00:00
|
|
|
return caps;
|
|
|
|
}
|
|
|
|
|
2024-04-15 11:38:15 +00:00
|
|
|
static gboolean
|
|
|
|
filter_only_dmabuf_caps (GstCapsFeatures * features,
|
|
|
|
GstStructure * structure, gpointer user_data)
|
|
|
|
{
|
|
|
|
return gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_DMABUF);
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
filter_non_dmabuf_caps (GstCapsFeatures * features,
|
|
|
|
GstStructure * structure, gpointer user_data)
|
|
|
|
{
|
|
|
|
return !gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_DMABUF);
|
|
|
|
}
|
|
|
|
|
2024-06-20 14:52:46 +00:00
|
|
|
static GstCaps *
|
|
|
|
gst_v4l2_decoder_enum_src_formats_full (GstV4l2Decoder * self,
|
|
|
|
GstStaticCaps * static_filter, gboolean enum_all)
|
2020-02-17 23:08:48 +00:00
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_format fmt = {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = self->src_buf_type,
|
2020-02-17 23:08:48 +00:00
|
|
|
};
|
2024-02-16 21:48:17 +00:00
|
|
|
GstCaps *caps, *filter, *tmp;
|
2020-02-17 23:08:48 +00:00
|
|
|
gint i;
|
|
|
|
|
|
|
|
g_return_val_if_fail (self->opened, FALSE);
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_G_FMT, &fmt);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_G_FMT failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2021-06-22 12:43:29 +00:00
|
|
|
caps =
|
|
|
|
gst_v4l2_decoder_probe_caps_for_format (self,
|
|
|
|
fmt.fmt.pix_mp.pixelformat, fmt.fmt.pix_mp.width, fmt.fmt.pix_mp.height);
|
2020-02-17 23:08:48 +00:00
|
|
|
|
|
|
|
/* And then enumerate other possible formats and place that as a second
|
|
|
|
* structure in the caps */
|
|
|
|
for (i = 0; ret >= 0; i++) {
|
2020-04-30 18:18:47 +00:00
|
|
|
struct v4l2_fmtdesc fmtdesc = { i, self->src_buf_type, };
|
2020-02-17 23:08:48 +00:00
|
|
|
|
2024-06-20 14:52:46 +00:00
|
|
|
if (enum_all)
|
|
|
|
fmtdesc.index |= V4L2_FMTDESC_FLAG_ENUM_ALL;
|
|
|
|
|
2020-02-17 23:08:48 +00:00
|
|
|
ret = ioctl (self->video_fd, VIDIOC_ENUM_FMT, &fmtdesc);
|
2024-06-20 14:52:46 +00:00
|
|
|
/* If the driver can't enumerate all the pixels formats
|
|
|
|
* return empty caps */
|
2024-11-12 11:12:17 +00:00
|
|
|
if (enum_all && ret < 0 && errno == EINVAL) {
|
2024-06-20 14:52:46 +00:00
|
|
|
gst_caps_unref (caps);
|
|
|
|
return gst_static_caps_get (&default_src_caps);
|
|
|
|
}
|
|
|
|
|
2020-02-17 23:08:48 +00:00
|
|
|
if (ret < 0) {
|
|
|
|
if (errno != EINVAL)
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_ENUM_FMT failed: %s",
|
|
|
|
g_strerror (errno));
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2021-06-22 12:43:29 +00:00
|
|
|
tmp = gst_v4l2_decoder_probe_caps_for_format (self, fmtdesc.pixelformat,
|
|
|
|
fmt.fmt.pix_mp.width, fmt.fmt.pix_mp.height);
|
|
|
|
caps = gst_caps_merge (caps, tmp);
|
2020-02-17 23:08:48 +00:00
|
|
|
}
|
|
|
|
|
2024-02-16 21:48:17 +00:00
|
|
|
filter = gst_static_caps_get (static_filter);
|
|
|
|
tmp = caps;
|
|
|
|
caps = gst_caps_intersect_full (tmp, filter, GST_CAPS_INTERSECT_FIRST);
|
|
|
|
gst_caps_unref (tmp);
|
|
|
|
gst_caps_unref (filter);
|
|
|
|
|
2024-04-15 11:38:15 +00:00
|
|
|
tmp = gst_caps_copy (caps);
|
|
|
|
gst_caps_filter_and_map_in_place (caps, filter_only_dmabuf_caps, NULL);
|
|
|
|
gst_caps_filter_and_map_in_place (tmp, filter_non_dmabuf_caps, NULL);
|
|
|
|
gst_caps_append (caps, tmp);
|
|
|
|
|
2024-06-20 14:52:46 +00:00
|
|
|
if (enum_all) {
|
|
|
|
/* When enumerating all the formats we don't need yet resolution
|
|
|
|
* so remove width, height and framerate fields */
|
|
|
|
guint n = gst_caps_get_size (caps);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
|
|
GstStructure *s = gst_caps_get_structure (caps, i);
|
|
|
|
|
|
|
|
gst_structure_remove_fields (s, "width", "height", "framerate", NULL);
|
|
|
|
}
|
|
|
|
caps = gst_caps_simplify (caps);
|
|
|
|
}
|
2024-02-16 21:48:17 +00:00
|
|
|
GST_DEBUG_OBJECT (self, "Probed caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
|
2020-02-17 23:08:48 +00:00
|
|
|
return caps;
|
|
|
|
}
|
|
|
|
|
2024-06-20 14:52:46 +00:00
|
|
|
GstCaps *
|
|
|
|
gst_v4l2_decoder_enum_src_formats (GstV4l2Decoder * self,
|
|
|
|
GstStaticCaps * static_filter)
|
|
|
|
{
|
|
|
|
return gst_v4l2_decoder_enum_src_formats_full (self, static_filter, FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
GstCaps *
|
|
|
|
gst_v4l2_decoder_enum_all_src_formats (GstV4l2Decoder * self,
|
|
|
|
GstStaticCaps * static_filter)
|
|
|
|
{
|
|
|
|
return gst_v4l2_decoder_enum_src_formats_full (self, static_filter, TRUE);
|
|
|
|
}
|
|
|
|
|
2024-05-27 12:28:18 +00:00
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_remove_buffers (GstV4l2Decoder * self,
|
|
|
|
GstPadDirection direction, guint index, guint num_buffers)
|
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_remove_buffers remove_bufs = {
|
|
|
|
.type = direction_to_buffer_type (self, direction),
|
|
|
|
.index = index,
|
|
|
|
.count = num_buffers,
|
|
|
|
};
|
|
|
|
|
|
|
|
if (!self->supports_remove_buffers)
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "remove buffers %d from index %d", remove_bufs.count,
|
|
|
|
remove_bufs.index);
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_REMOVE_BUFS, &remove_bufs);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_REMOVE_BUF failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-02-10 23:05:39 +00:00
|
|
|
gboolean
|
2020-02-17 23:08:48 +00:00
|
|
|
gst_v4l2_decoder_select_src_format (GstV4l2Decoder * self, GstCaps * caps,
|
2024-01-06 12:07:16 +00:00
|
|
|
GstVideoInfo * vinfo, GstVideoInfoDmaDrm * vinfo_drm)
|
2020-02-10 23:05:39 +00:00
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_format fmt = {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = self->src_buf_type,
|
2020-02-10 23:05:39 +00:00
|
|
|
};
|
2020-02-17 23:08:48 +00:00
|
|
|
GstVideoFormat format;
|
|
|
|
guint32 pix_fmt;
|
2024-02-17 04:43:23 +00:00
|
|
|
GstVideoInfo tmp_vinfo;
|
2024-01-06 12:07:16 +00:00
|
|
|
GstVideoInfoDmaDrm tmp_vinfo_drm;
|
2020-02-17 23:08:48 +00:00
|
|
|
|
|
|
|
if (gst_caps_is_empty (caps))
|
|
|
|
return FALSE;
|
2020-02-10 23:05:39 +00:00
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_G_FMT, &fmt);
|
|
|
|
if (ret < 0) {
|
2020-02-17 23:08:48 +00:00
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_G_FMT failed: %s", g_strerror (errno));
|
2020-02-10 23:05:39 +00:00
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2024-02-17 04:43:23 +00:00
|
|
|
gst_video_info_init (&tmp_vinfo);
|
2024-01-06 12:07:16 +00:00
|
|
|
gst_video_info_dma_drm_init (&tmp_vinfo_drm);
|
2020-02-17 23:08:48 +00:00
|
|
|
|
2024-02-17 04:43:23 +00:00
|
|
|
GST_DEBUG_OBJECT (self, "Original caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
caps = gst_caps_fixate (caps);
|
|
|
|
GST_DEBUG_OBJECT (self, "Fixated caps: %" GST_PTR_FORMAT, caps);
|
2020-02-17 23:08:48 +00:00
|
|
|
|
2024-01-06 12:07:16 +00:00
|
|
|
if (gst_video_info_dma_drm_from_caps (&tmp_vinfo_drm, caps)) {
|
|
|
|
format = tmp_vinfo_drm.vinfo.finfo->format;
|
|
|
|
} else if (gst_video_info_from_caps (&tmp_vinfo, caps)) {
|
2024-02-17 04:43:23 +00:00
|
|
|
format = tmp_vinfo.finfo->format;
|
|
|
|
} else {
|
|
|
|
GST_WARNING_OBJECT (self, "Can't transform caps into video info!");
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!gst_v4l2_format_from_video_format (format, &pix_fmt)) {
|
|
|
|
GST_ERROR_OBJECT (self, "Unsupported V4L2 pixelformat %" GST_FOURCC_FORMAT,
|
|
|
|
GST_FOURCC_ARGS (fmt.fmt.pix_mp.pixelformat));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (pix_fmt != fmt.fmt.pix_mp.pixelformat) {
|
|
|
|
GST_WARNING_OBJECT (self, "Trying to use peer format: %s",
|
|
|
|
gst_video_format_to_string (format));
|
2020-02-17 23:08:48 +00:00
|
|
|
fmt.fmt.pix_mp.pixelformat = pix_fmt;
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_S_FMT, &fmt);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_S_FMT failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2024-02-17 04:43:23 +00:00
|
|
|
if (!gst_v4l2_format_to_video_info (&fmt, vinfo)) {
|
2020-02-10 23:05:39 +00:00
|
|
|
GST_ERROR_OBJECT (self, "Unsupported V4L2 pixelformat %" GST_FOURCC_FORMAT,
|
|
|
|
GST_FOURCC_ARGS (fmt.fmt.pix_mp.pixelformat));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2024-11-12 11:09:46 +00:00
|
|
|
gst_video_info_dma_drm_init (vinfo_drm);
|
2024-01-06 12:07:16 +00:00
|
|
|
if (tmp_vinfo_drm.drm_fourcc) {
|
2024-11-12 11:09:46 +00:00
|
|
|
GstVideoFormat format = GST_VIDEO_INFO_FORMAT (vinfo);
|
|
|
|
vinfo_drm->drm_fourcc = gst_video_dma_drm_fourcc_from_format_full (format,
|
|
|
|
&vinfo_drm->drm_modifier);
|
|
|
|
vinfo_drm->vinfo = *vinfo;
|
2024-01-06 12:07:16 +00:00
|
|
|
}
|
|
|
|
|
2020-02-10 23:05:39 +00:00
|
|
|
GST_INFO_OBJECT (self, "Selected format %s %ix%i",
|
2024-02-17 04:43:23 +00:00
|
|
|
gst_video_format_to_string (vinfo->finfo->format),
|
|
|
|
vinfo->width, vinfo->height);
|
2020-02-10 23:05:39 +00:00
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2024-02-17 05:01:41 +00:00
|
|
|
GstVideoCodecState *
|
|
|
|
gst_v4l2_decoder_set_output_state (GstVideoDecoder * decoder,
|
2024-01-06 12:07:16 +00:00
|
|
|
GstVideoInfo * vinfo, GstVideoInfoDmaDrm * vinfo_drm, guint width,
|
|
|
|
guint height, GstVideoCodecState * reference)
|
2024-02-17 05:01:41 +00:00
|
|
|
{
|
|
|
|
GstVideoCodecState *state;
|
|
|
|
|
|
|
|
state = gst_video_decoder_set_output_state (decoder, vinfo->finfo->format,
|
|
|
|
width, height, reference);
|
|
|
|
|
2024-01-06 12:07:16 +00:00
|
|
|
if (vinfo_drm->drm_fourcc /* != DRM_FORMAT_INVALID */ ) {
|
2024-11-12 11:09:46 +00:00
|
|
|
GstVideoInfoDmaDrm tmp_vinfo_drm = *vinfo_drm;
|
|
|
|
|
|
|
|
/* Use display width/height in output caps */
|
|
|
|
tmp_vinfo_drm.vinfo.width = width;
|
|
|
|
tmp_vinfo_drm.vinfo.height = height;
|
2024-01-06 12:07:16 +00:00
|
|
|
|
|
|
|
state->caps = gst_video_info_dma_drm_to_caps (&tmp_vinfo_drm);
|
|
|
|
} else {
|
|
|
|
state->caps = gst_video_info_to_caps (&state->info);
|
|
|
|
}
|
2024-02-17 05:01:41 +00:00
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (decoder, "Setting caps: %" GST_PTR_FORMAT, state->caps);
|
|
|
|
|
|
|
|
return state;
|
|
|
|
}
|
|
|
|
|
2020-02-13 04:39:25 +00:00
|
|
|
gint
|
|
|
|
gst_v4l2_decoder_request_buffers (GstV4l2Decoder * self,
|
|
|
|
GstPadDirection direction, guint num_buffers)
|
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_requestbuffers reqbufs = {
|
|
|
|
.count = num_buffers,
|
|
|
|
.memory = V4L2_MEMORY_MMAP,
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = direction_to_buffer_type (self, direction),
|
2020-02-13 04:39:25 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Requesting %u buffers", num_buffers);
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_REQBUFS, &reqbufs);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_REQBUFS failed: %s", g_strerror (errno));
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2023-06-19 09:09:22 +00:00
|
|
|
return reqbufs.count;
|
|
|
|
}
|
|
|
|
|
|
|
|
gint
|
|
|
|
gst_v4l2_decoder_create_buffers (GstV4l2Decoder * self,
|
|
|
|
GstPadDirection direction, guint num_buffers)
|
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_create_buffers createbufs = {
|
|
|
|
.count = num_buffers,
|
|
|
|
.memory = V4L2_MEMORY_MMAP,
|
|
|
|
.format.type = direction_to_buffer_type (self, direction),
|
|
|
|
};
|
|
|
|
|
|
|
|
GST_DEBUG_OBJECT (self, "Creating %u buffers", num_buffers);
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_G_FMT, &createbufs.format);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_G_FMT failed: %s", g_strerror (errno));
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_CREATE_BUFS, &createbufs);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_CREATE_BUFS failed: %s",
|
|
|
|
g_strerror (errno));
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2022-03-23 14:36:28 +00:00
|
|
|
if (direction == GST_PAD_SINK) {
|
2023-06-19 09:09:22 +00:00
|
|
|
if (createbufs.capabilities & V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF)
|
2022-03-23 14:36:28 +00:00
|
|
|
self->supports_holding_capture = TRUE;
|
|
|
|
else
|
|
|
|
self->supports_holding_capture = FALSE;
|
|
|
|
}
|
|
|
|
|
2023-06-19 09:09:22 +00:00
|
|
|
return createbufs.index;
|
2020-02-13 04:39:25 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_export_buffer (GstV4l2Decoder * self,
|
|
|
|
GstPadDirection direction, gint index, gint * fds, gsize * sizes,
|
|
|
|
gsize * offsets, guint * num_fds)
|
|
|
|
{
|
|
|
|
gint i, ret;
|
|
|
|
struct v4l2_plane planes[GST_VIDEO_MAX_PLANES] = { {0} };
|
|
|
|
struct v4l2_buffer v4l2_buf = {
|
2023-11-13 12:01:03 +00:00
|
|
|
.index = index,
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = direction_to_buffer_type (self, direction),
|
2020-02-13 04:39:25 +00:00
|
|
|
};
|
|
|
|
|
2020-04-30 18:18:47 +00:00
|
|
|
if (self->mplane) {
|
|
|
|
v4l2_buf.length = GST_VIDEO_MAX_PLANES;
|
|
|
|
v4l2_buf.m.planes = planes;
|
|
|
|
}
|
|
|
|
|
2020-02-13 04:39:25 +00:00
|
|
|
ret = ioctl (self->video_fd, VIDIOC_QUERYBUF, &v4l2_buf);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_QUERYBUF failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2020-04-30 18:18:47 +00:00
|
|
|
if (self->mplane) {
|
|
|
|
for (i = 0; i < v4l2_buf.length; i++) {
|
|
|
|
struct v4l2_plane *plane = v4l2_buf.m.planes + i;
|
|
|
|
struct v4l2_exportbuffer expbuf = {
|
|
|
|
.type = direction_to_buffer_type (self, direction),
|
|
|
|
.index = index,
|
|
|
|
.plane = i,
|
|
|
|
.flags = O_CLOEXEC | O_RDWR,
|
|
|
|
};
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_EXPBUF, &expbuf);
|
|
|
|
if (ret < 0) {
|
|
|
|
gint j;
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_EXPBUF failed: %s", g_strerror (errno));
|
|
|
|
|
|
|
|
for (j = i - 1; j >= 0; j--)
|
|
|
|
close (fds[j]);
|
|
|
|
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
*num_fds = v4l2_buf.length;
|
|
|
|
fds[i] = expbuf.fd;
|
|
|
|
sizes[i] = plane->length;
|
|
|
|
offsets[i] = plane->data_offset;
|
|
|
|
}
|
|
|
|
} else {
|
2020-02-13 04:39:25 +00:00
|
|
|
struct v4l2_exportbuffer expbuf = {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = direction_to_buffer_type (self, direction),
|
2020-02-13 04:39:25 +00:00
|
|
|
.index = index,
|
|
|
|
.flags = O_CLOEXEC | O_RDWR,
|
|
|
|
};
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_EXPBUF, &expbuf);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_EXPBUF failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2020-04-30 18:18:47 +00:00
|
|
|
*num_fds = 1;
|
|
|
|
fds[0] = expbuf.fd;
|
|
|
|
sizes[0] = v4l2_buf.length;
|
|
|
|
offsets[0] = 0;
|
2020-02-13 04:39:25 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
static gboolean
|
2020-02-15 03:03:17 +00:00
|
|
|
gst_v4l2_decoder_queue_sink_mem (GstV4l2Decoder * self,
|
2021-01-27 20:55:43 +00:00
|
|
|
GstV4l2Request * request, GstMemory * mem, guint32 frame_num, guint flags)
|
2020-02-15 03:03:17 +00:00
|
|
|
{
|
|
|
|
gint ret;
|
2020-12-14 22:07:01 +00:00
|
|
|
gsize bytesused = gst_memory_get_sizes (mem, NULL, NULL);
|
2020-02-15 03:03:17 +00:00
|
|
|
struct v4l2_plane plane = {
|
2020-02-16 22:48:12 +00:00
|
|
|
.bytesused = bytesused,
|
2020-02-15 03:03:17 +00:00
|
|
|
};
|
|
|
|
struct v4l2_buffer buf = {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = self->sink_buf_type,
|
2020-02-15 03:03:17 +00:00
|
|
|
.memory = V4L2_MEMORY_MMAP,
|
|
|
|
.index = gst_v4l2_codec_memory_get_index (mem),
|
v4l2codecs: Avoid QBUF/DQBUF struct timeval .tv_usec wrap-around at frame 1000000
When decoding stream using hardware V4L2 decoder element, in any of the
currently supported formats, the decoding will fail once frame number
1000000 is reached. The reported error clearly indicates a wrap-around
occured, instead of receiving decoded frame 1000000, frame 0 is received
from the hardware V4L2 decoder driver.
The problem is actually not in the driver itself, but rather in gstreamer,
which uses `struct v4l2_buffer` member `.timestamp` in a special way. The
timestamp of buffers with encoded data added to the SINK (input) queue of
the driver is copied by the driver into matching buffers with decoded data
added to the SOURCE (output) queue of the driver. In fact, the timestamp
is not a timestamp at all, but rather in this special case, only part of
it is used as an incrementing frame counter.
The `.timestamp` is of type `struct timeval`, which is defined in
`sys/time.h` [1]. Only the `tv_usec` member of this structure is used
for the incrementing frame counter. However, suseconds_t tv_usec [2]
may be limited to range [-1, 1000000]:
"
[XSI] The type suseconds_t shall be a signed integer type capable of
storing values at least in the range [-1, 1000000].
"
Therefore, once frame 1000000 is reached, a rollover occurs and decoding
fails.
Fix this by using both `struct timeval` members, `.tv_sec` and `.tv_usec`
with matching modular arithmetic, this way the failure would occur again
just short of 2^84 frames, which should be plenty.
[1] https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_time.h.html
[2] https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html
A test case using stateless hardware h264 decoder, the WARN/ERROR output
in gstreamer log indicates a failure occurred. With this change, that
error no longer occurs and the WARN/ERROR are not present:
```
pc$ gst-launch-1.0 videotestsrc num-buffers=1001001 pattern=6 ! \
video/x-raw,width=16,height=16,format=I420 ! \
x264enc ! filesink location=/tmp/test.h264
dut$ GST_DEBUG="*:3" gst-launch-1.0 filesrc location=/tmp/test.h264 ! \
h264parse ! v4l2slh264dec ! fakesink
...
0:03:51.393677606 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000000, but driver returned frame 0.
0:03:51.394140597 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000001, but driver returned frame 1.
0:03:51.394425216 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000002, but driver returned frame 2.
0:03:51.394665211 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000003, but driver returned frame 3.
0:03:51.394785833 12111 0x370df400 WARN \
v4l2codecs-h264dec gstv4l2codech264dec.c:1059:gst_v4l2_codec_h264_dec_output_picture:<v4l2slh264dec0> \
error: Failed to decode frame 1000000
ERROR: from element /GstPipeline:pipeline0/v4l2slh264dec:v4l2slh264dec0: Failed to decode frame 1000000
```
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5598>
2023-11-04 02:16:47 +00:00
|
|
|
.timestamp.tv_sec = frame_num / 1000000,
|
|
|
|
.timestamp.tv_usec = frame_num % 1000000,
|
2020-02-15 03:03:17 +00:00
|
|
|
.request_fd = request->fd,
|
2020-05-05 21:55:19 +00:00
|
|
|
.flags = V4L2_BUF_FLAG_REQUEST_FD | flags,
|
2020-02-15 03:03:17 +00:00
|
|
|
};
|
|
|
|
|
2020-07-01 16:26:36 +00:00
|
|
|
GST_TRACE_OBJECT (self, "Queueing bitstream buffer %i", buf.index);
|
|
|
|
|
2020-04-30 18:18:47 +00:00
|
|
|
if (self->mplane) {
|
|
|
|
buf.length = 1;
|
|
|
|
buf.m.planes = &plane;
|
|
|
|
} else {
|
|
|
|
buf.bytesused = bytesused;
|
|
|
|
}
|
|
|
|
|
2020-02-15 03:03:17 +00:00
|
|
|
ret = ioctl (self->video_fd, VIDIOC_QBUF, &buf);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_QBUF failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
static gboolean
|
|
|
|
gst_v4l2_decoder_queue_src_buffer (GstV4l2Decoder * self, GstBuffer * buffer)
|
2020-02-15 03:03:17 +00:00
|
|
|
{
|
|
|
|
gint i, ret;
|
2020-04-30 18:18:47 +00:00
|
|
|
struct v4l2_plane planes[GST_VIDEO_MAX_PLANES];
|
2020-02-15 03:03:17 +00:00
|
|
|
struct v4l2_buffer buf = {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = self->src_buf_type,
|
2020-02-15 03:03:17 +00:00
|
|
|
.memory = V4L2_MEMORY_MMAP,
|
|
|
|
.index = gst_v4l2_codec_buffer_get_index (buffer),
|
|
|
|
};
|
|
|
|
|
2020-07-01 16:26:36 +00:00
|
|
|
GST_TRACE_OBJECT (self, "Queuing picture buffer %i", buf.index);
|
|
|
|
|
2020-04-30 18:18:47 +00:00
|
|
|
if (self->mplane) {
|
|
|
|
buf.length = gst_buffer_n_memory (buffer);
|
|
|
|
buf.m.planes = planes;
|
|
|
|
for (i = 0; i < buf.length; i++) {
|
|
|
|
GstMemory *mem = gst_buffer_peek_memory (buffer, i);
|
|
|
|
/* *INDENT-OFF* */
|
|
|
|
planes[i] = (struct v4l2_plane) {
|
|
|
|
.bytesused = gst_memory_get_sizes (mem, NULL, NULL),
|
|
|
|
};
|
|
|
|
/* *INDENT-ON* */
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
buf.bytesused = gst_buffer_get_size (buffer);
|
2020-02-15 03:03:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_QBUF, &buf);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_QBUF failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
static gboolean
|
2020-02-16 19:51:37 +00:00
|
|
|
gst_v4l2_decoder_dequeue_sink (GstV4l2Decoder * self)
|
|
|
|
{
|
|
|
|
gint ret;
|
2020-04-30 18:18:47 +00:00
|
|
|
struct v4l2_plane planes[GST_VIDEO_MAX_PLANES] = { {0} };
|
2020-02-16 19:51:37 +00:00
|
|
|
struct v4l2_buffer buf = {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = self->sink_buf_type,
|
2020-02-16 19:51:37 +00:00
|
|
|
.memory = V4L2_MEMORY_MMAP,
|
|
|
|
};
|
|
|
|
|
2020-04-30 18:18:47 +00:00
|
|
|
if (self->mplane) {
|
|
|
|
buf.length = GST_VIDEO_MAX_PLANES;
|
|
|
|
buf.m.planes = planes;
|
|
|
|
}
|
|
|
|
|
2020-02-16 19:51:37 +00:00
|
|
|
ret = ioctl (self->video_fd, VIDIOC_DQBUF, &buf);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_DQBUF failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2020-07-01 16:26:36 +00:00
|
|
|
GST_TRACE_OBJECT (self, "Dequeued bitstream buffer %i", buf.index);
|
|
|
|
|
2020-02-16 19:51:37 +00:00
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
static gboolean
|
2020-02-16 19:51:37 +00:00
|
|
|
gst_v4l2_decoder_dequeue_src (GstV4l2Decoder * self, guint32 * out_frame_num)
|
|
|
|
{
|
|
|
|
gint ret;
|
2020-04-30 18:18:47 +00:00
|
|
|
struct v4l2_plane planes[GST_VIDEO_MAX_PLANES] = { {0} };
|
2020-02-16 19:51:37 +00:00
|
|
|
struct v4l2_buffer buf = {
|
2020-04-30 18:18:47 +00:00
|
|
|
.type = self->src_buf_type,
|
2020-02-16 19:51:37 +00:00
|
|
|
.memory = V4L2_MEMORY_MMAP,
|
|
|
|
};
|
|
|
|
|
2020-04-30 18:18:47 +00:00
|
|
|
if (self->mplane) {
|
|
|
|
buf.length = GST_VIDEO_MAX_PLANES;
|
|
|
|
buf.m.planes = planes;
|
|
|
|
}
|
|
|
|
|
2020-02-16 19:51:37 +00:00
|
|
|
ret = ioctl (self->video_fd, VIDIOC_DQBUF, &buf);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_DQBUF failed: %s", g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
v4l2codecs: Avoid QBUF/DQBUF struct timeval .tv_usec wrap-around at frame 1000000
When decoding stream using hardware V4L2 decoder element, in any of the
currently supported formats, the decoding will fail once frame number
1000000 is reached. The reported error clearly indicates a wrap-around
occured, instead of receiving decoded frame 1000000, frame 0 is received
from the hardware V4L2 decoder driver.
The problem is actually not in the driver itself, but rather in gstreamer,
which uses `struct v4l2_buffer` member `.timestamp` in a special way. The
timestamp of buffers with encoded data added to the SINK (input) queue of
the driver is copied by the driver into matching buffers with decoded data
added to the SOURCE (output) queue of the driver. In fact, the timestamp
is not a timestamp at all, but rather in this special case, only part of
it is used as an incrementing frame counter.
The `.timestamp` is of type `struct timeval`, which is defined in
`sys/time.h` [1]. Only the `tv_usec` member of this structure is used
for the incrementing frame counter. However, suseconds_t tv_usec [2]
may be limited to range [-1, 1000000]:
"
[XSI] The type suseconds_t shall be a signed integer type capable of
storing values at least in the range [-1, 1000000].
"
Therefore, once frame 1000000 is reached, a rollover occurs and decoding
fails.
Fix this by using both `struct timeval` members, `.tv_sec` and `.tv_usec`
with matching modular arithmetic, this way the failure would occur again
just short of 2^84 frames, which should be plenty.
[1] https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_time.h.html
[2] https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html
A test case using stateless hardware h264 decoder, the WARN/ERROR output
in gstreamer log indicates a failure occurred. With this change, that
error no longer occurs and the WARN/ERROR are not present:
```
pc$ gst-launch-1.0 videotestsrc num-buffers=1001001 pattern=6 ! \
video/x-raw,width=16,height=16,format=I420 ! \
x264enc ! filesink location=/tmp/test.h264
dut$ GST_DEBUG="*:3" gst-launch-1.0 filesrc location=/tmp/test.h264 ! \
h264parse ! v4l2slh264dec ! fakesink
...
0:03:51.393677606 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000000, but driver returned frame 0.
0:03:51.394140597 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000001, but driver returned frame 1.
0:03:51.394425216 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000002, but driver returned frame 2.
0:03:51.394665211 12111 0x370df400 WARN \
v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
Requested frame 1000003, but driver returned frame 3.
0:03:51.394785833 12111 0x370df400 WARN \
v4l2codecs-h264dec gstv4l2codech264dec.c:1059:gst_v4l2_codec_h264_dec_output_picture:<v4l2slh264dec0> \
error: Failed to decode frame 1000000
ERROR: from element /GstPipeline:pipeline0/v4l2slh264dec:v4l2slh264dec0: Failed to decode frame 1000000
```
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5598>
2023-11-04 02:16:47 +00:00
|
|
|
*out_frame_num = buf.timestamp.tv_usec + buf.timestamp.tv_sec * 1000000;
|
2020-07-01 16:26:36 +00:00
|
|
|
|
|
|
|
GST_TRACE_OBJECT (self, "Dequeued picture buffer %i", buf.index);
|
|
|
|
|
2020-02-16 19:51:37 +00:00
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-02-15 03:03:17 +00:00
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_set_controls (GstV4l2Decoder * self, GstV4l2Request * request,
|
2023-03-15 18:54:13 +00:00
|
|
|
struct v4l2_ext_control *control, guint count)
|
2020-02-15 03:03:17 +00:00
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_ext_controls controls = {
|
|
|
|
.controls = control,
|
|
|
|
.count = count,
|
2020-02-17 23:08:48 +00:00
|
|
|
.request_fd = request ? request->fd : 0,
|
|
|
|
.which = request ? V4L2_CTRL_WHICH_REQUEST_VAL : 0,
|
2020-02-15 03:03:17 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_S_EXT_CTRLS, &controls);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_S_EXT_CTRLS failed: %s",
|
2020-05-05 21:55:19 +00:00
|
|
|
g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_get_controls (GstV4l2Decoder * self,
|
2023-03-15 18:54:13 +00:00
|
|
|
struct v4l2_ext_control *control, guint count)
|
2020-05-05 21:55:19 +00:00
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_ext_controls controls = {
|
|
|
|
.controls = control,
|
|
|
|
.count = count,
|
|
|
|
};
|
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_G_EXT_CTRLS, &controls);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "VIDIOC_G_EXT_CTRLS failed: %s",
|
2020-02-15 03:03:17 +00:00
|
|
|
g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-09-30 17:14:41 +00:00
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_query_control_size (GstV4l2Decoder * self,
|
|
|
|
unsigned int control_id, unsigned int *control_size)
|
|
|
|
{
|
|
|
|
gint ret;
|
|
|
|
struct v4l2_query_ext_ctrl control = {
|
|
|
|
.id = control_id,
|
|
|
|
};
|
|
|
|
|
2022-01-28 19:49:42 +00:00
|
|
|
if (control_size)
|
|
|
|
*control_size = 0;
|
2020-09-30 17:14:41 +00:00
|
|
|
|
|
|
|
ret = ioctl (self->video_fd, VIDIOC_QUERY_EXT_CTRL, &control);
|
|
|
|
if (ret < 0)
|
|
|
|
/*
|
|
|
|
* It's not an error if a control is not supported by this driver.
|
|
|
|
* Return false but don't print any error.
|
|
|
|
*/
|
|
|
|
return FALSE;
|
|
|
|
|
2022-01-28 19:49:42 +00:00
|
|
|
if (control_size)
|
|
|
|
*control_size = control.elem_size;
|
2020-09-30 17:14:41 +00:00
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
2020-02-06 02:42:56 +00:00
|
|
|
void
|
|
|
|
gst_v4l2_decoder_install_properties (GObjectClass * gobject_class,
|
|
|
|
gint prop_offset, GstV4l2CodecDevice * device)
|
|
|
|
{
|
|
|
|
const gchar *media_device_path = NULL;
|
|
|
|
const gchar *video_device_path = NULL;
|
|
|
|
|
|
|
|
if (device) {
|
|
|
|
media_device_path = device->media_device_path;
|
|
|
|
video_device_path = device->video_device_path;
|
|
|
|
}
|
|
|
|
|
|
|
|
g_object_class_install_property (gobject_class, PROP_MEDIA_DEVICE,
|
|
|
|
g_param_spec_string ("media-device", "Media Device Path",
|
|
|
|
"Path to the media device node", media_device_path,
|
|
|
|
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
|
|
|
|
g_object_class_install_property (gobject_class, PROP_VIDEO_DEVICE,
|
|
|
|
g_param_spec_string ("video-device", "Video Device Path",
|
|
|
|
"Path to the video device node", video_device_path,
|
|
|
|
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
gst_v4l2_decoder_set_property (GObject * object, guint prop_id,
|
|
|
|
const GValue * value, GParamSpec * pspec)
|
|
|
|
{
|
|
|
|
GstV4l2Decoder *self = GST_V4L2_DECODER (object);
|
|
|
|
|
|
|
|
switch (prop_id) {
|
|
|
|
case PROP_MEDIA_DEVICE:
|
|
|
|
g_free (self->media_device);
|
|
|
|
self->media_device = g_value_dup_string (value);
|
|
|
|
break;
|
|
|
|
case PROP_VIDEO_DEVICE:
|
|
|
|
g_free (self->video_device);
|
|
|
|
self->video_device = g_value_dup_string (value);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
gst_v4l2_decoder_get_property (GObject * object, guint prop_id,
|
|
|
|
GValue * value, GParamSpec * pspec)
|
|
|
|
{
|
|
|
|
GstV4l2Decoder *self = GST_V4L2_DECODER (object);
|
|
|
|
|
|
|
|
switch (prop_id) {
|
|
|
|
case PROP_MEDIA_DEVICE:
|
|
|
|
g_value_set_string (value, self->media_device);
|
|
|
|
break;
|
|
|
|
case PROP_VIDEO_DEVICE:
|
|
|
|
g_value_set_string (value, self->video_device);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2020-02-15 03:03:17 +00:00
|
|
|
|
2021-05-22 19:29:09 +00:00
|
|
|
/**
|
|
|
|
* gst_v4l2_decoder_register:
|
|
|
|
* @plugin: a #GstPlugin
|
|
|
|
* @dec_type: A #GType for the codec
|
|
|
|
* @class_init: The #GClassInitFunc for #dec_type
|
|
|
|
* @instance_init: The #GInstanceInitFunc for #dec_type
|
|
|
|
* @element_name_tmpl: A string to use for the first codec found and as a template for the next ones.
|
|
|
|
* @device: (transfer full) A #GstV4l2CodecDevice
|
|
|
|
* @rank: The rank to use for the element
|
|
|
|
* @class_data: (nullable) (transfer full) A #gpointer to pass as class_data, set to @device if null
|
|
|
|
* @element_name (nullable) (out) Sets the pointer to the new element name
|
|
|
|
*
|
|
|
|
* Registers a decoder element as a subtype of @dec_type for @plugin.
|
|
|
|
* Will create a different sub_types for each subsequent @decoder of the
|
|
|
|
* same type.
|
|
|
|
*/
|
2020-04-28 00:26:54 +00:00
|
|
|
void
|
|
|
|
gst_v4l2_decoder_register (GstPlugin * plugin,
|
2021-05-22 19:29:09 +00:00
|
|
|
GType dec_type, GClassInitFunc class_init, gconstpointer class_data,
|
|
|
|
GInstanceInitFunc instance_init, const gchar * element_name_tmpl,
|
|
|
|
GstV4l2CodecDevice * device, guint rank, gchar ** element_name)
|
2020-04-28 00:26:54 +00:00
|
|
|
{
|
|
|
|
GTypeQuery type_query;
|
|
|
|
GTypeInfo type_info = { 0, };
|
|
|
|
GType subtype;
|
|
|
|
gchar *type_name;
|
|
|
|
|
|
|
|
g_type_query (dec_type, &type_query);
|
|
|
|
memset (&type_info, 0, sizeof (type_info));
|
|
|
|
type_info.class_size = type_query.class_size;
|
|
|
|
type_info.instance_size = type_query.instance_size;
|
|
|
|
type_info.class_init = class_init;
|
2021-05-22 19:29:09 +00:00
|
|
|
type_info.class_data = class_data;
|
2020-04-28 00:26:54 +00:00
|
|
|
type_info.instance_init = instance_init;
|
2021-05-22 19:29:09 +00:00
|
|
|
|
|
|
|
if (class_data == device)
|
|
|
|
GST_MINI_OBJECT_FLAG_SET (device, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
|
2020-04-28 00:26:54 +00:00
|
|
|
|
|
|
|
/* The first decoder to be registered should use a constant name, like
|
|
|
|
* v4l2slvp8dec, for any additional decoders, we create unique names. Decoder
|
|
|
|
* names may change between boots, so this should help gain stable names for
|
|
|
|
* the most common use cases. SL stands for state-less, we differentiate
|
|
|
|
* with v4l2vp8dec as this element may not have the same properties */
|
|
|
|
type_name = g_strdup_printf (element_name_tmpl, "");
|
|
|
|
|
|
|
|
if (g_type_from_name (type_name) != 0) {
|
|
|
|
gchar *basename = g_path_get_basename (device->video_device_path);
|
|
|
|
g_free (type_name);
|
|
|
|
type_name = g_strdup_printf (element_name_tmpl, basename);
|
|
|
|
g_free (basename);
|
|
|
|
}
|
|
|
|
|
|
|
|
subtype = g_type_register_static (dec_type, type_name, &type_info, 0);
|
|
|
|
|
2021-05-22 19:29:09 +00:00
|
|
|
if (!gst_element_register (plugin, type_name, rank, subtype)) {
|
2020-04-28 00:26:54 +00:00
|
|
|
GST_WARNING ("Failed to register plugin '%s'", type_name);
|
2021-05-22 19:29:09 +00:00
|
|
|
g_free (type_name);
|
|
|
|
type_name = NULL;
|
|
|
|
}
|
2020-04-28 00:26:54 +00:00
|
|
|
|
2021-05-22 19:29:09 +00:00
|
|
|
if (element_name)
|
|
|
|
*element_name = type_name;
|
|
|
|
else
|
|
|
|
g_free (type_name);
|
2020-04-28 00:26:54 +00:00
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
/*
|
|
|
|
* gst_v4l2_decoder_alloc_request:
|
|
|
|
* @self a #GstV4l2Decoder pointer
|
|
|
|
* @frame_num: Used as a timestamp to identify references
|
|
|
|
* @bitstream the #GstMemory that holds the bitstream data
|
|
|
|
* @pic_buf the #GstBuffer holding the decoded picture
|
|
|
|
*
|
|
|
|
* Allocate a Linux media request file descriptor. This request wrapper will
|
|
|
|
* hold a reference to the requested bitstream memory to decoded and the
|
|
|
|
* picture buffer this request will decode to. This will be used for
|
|
|
|
* transparent management of the V4L2 queues.
|
|
|
|
*
|
|
|
|
* Returns: a new #GstV4l2Request
|
|
|
|
*/
|
2020-02-15 03:03:17 +00:00
|
|
|
GstV4l2Request *
|
2020-12-14 22:07:01 +00:00
|
|
|
gst_v4l2_decoder_alloc_request (GstV4l2Decoder * self, guint32 frame_num,
|
|
|
|
GstMemory * bitstream, GstBuffer * pic_buf)
|
2020-02-15 03:03:17 +00:00
|
|
|
{
|
2024-04-18 14:07:25 +00:00
|
|
|
GstV4l2Request *request = gst_vec_deque_pop_head (self->request_pool);
|
2020-02-15 03:03:17 +00:00
|
|
|
gint ret;
|
|
|
|
|
|
|
|
if (!request) {
|
|
|
|
request = g_new0 (GstV4l2Request, 1);
|
|
|
|
|
|
|
|
ret = ioctl (self->media_fd, MEDIA_IOC_REQUEST_ALLOC, &request->fd);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "MEDIA_IOC_REQUEST_ALLOC failed: %s",
|
|
|
|
g_strerror (errno));
|
|
|
|
return NULL;
|
|
|
|
}
|
2020-02-16 19:51:37 +00:00
|
|
|
|
|
|
|
request->poll = gst_poll_new (FALSE);
|
|
|
|
gst_poll_fd_init (&request->pollfd);
|
|
|
|
request->pollfd.fd = request->fd;
|
|
|
|
gst_poll_add_fd (request->poll, &request->pollfd);
|
|
|
|
gst_poll_fd_ctl_pri (request->poll, &request->pollfd, TRUE);
|
2020-02-15 03:03:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
request->decoder = g_object_ref (self);
|
2020-12-14 22:07:01 +00:00
|
|
|
request->bitstream = gst_memory_ref (bitstream);
|
|
|
|
request->pic_buf = gst_buffer_ref (pic_buf);
|
|
|
|
request->frame_num = frame_num;
|
2020-12-18 21:36:16 +00:00
|
|
|
request->ref_count = 1;
|
2020-12-14 22:07:01 +00:00
|
|
|
|
2020-02-15 03:03:17 +00:00
|
|
|
return request;
|
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
/*
|
|
|
|
* gst_v4l2_decoder_alloc_sub_request:
|
|
|
|
* @self a #GstV4l2Decoder pointer
|
|
|
|
* @prev_request the #GstV4l2Request this request continue
|
|
|
|
* @bitstream the #GstMemory that holds the bitstream data
|
|
|
|
*
|
|
|
|
* Allocate a Linux media request file descriptor. Similar to
|
|
|
|
* gst_v4l2_decoder_alloc_request(), but used when a request is the
|
|
|
|
* continuation of the decoding of the same picture. This is notably the case
|
|
|
|
* for subsequent slices or for second field of a frame.
|
|
|
|
*
|
|
|
|
* Returns: a new #GstV4l2Request
|
|
|
|
*/
|
|
|
|
GstV4l2Request *
|
|
|
|
gst_v4l2_decoder_alloc_sub_request (GstV4l2Decoder * self,
|
|
|
|
GstV4l2Request * prev_request, GstMemory * bitstream)
|
|
|
|
{
|
2024-04-18 14:07:25 +00:00
|
|
|
GstV4l2Request *request = gst_vec_deque_pop_head (self->request_pool);
|
2020-12-14 22:07:01 +00:00
|
|
|
gint ret;
|
|
|
|
|
|
|
|
if (!request) {
|
|
|
|
request = g_new0 (GstV4l2Request, 1);
|
|
|
|
|
|
|
|
ret = ioctl (self->media_fd, MEDIA_IOC_REQUEST_ALLOC, &request->fd);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (self, "MEDIA_IOC_REQUEST_ALLOC failed: %s",
|
|
|
|
g_strerror (errno));
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
request->poll = gst_poll_new (FALSE);
|
|
|
|
gst_poll_fd_init (&request->pollfd);
|
|
|
|
request->pollfd.fd = request->fd;
|
|
|
|
gst_poll_add_fd (request->poll, &request->pollfd);
|
|
|
|
gst_poll_fd_ctl_pri (request->poll, &request->pollfd, TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
request->decoder = g_object_ref (self);
|
|
|
|
request->bitstream = gst_memory_ref (bitstream);
|
|
|
|
request->pic_buf = gst_buffer_ref (prev_request->pic_buf);
|
|
|
|
request->frame_num = prev_request->frame_num;
|
|
|
|
request->sub_request = TRUE;
|
2020-12-18 21:36:16 +00:00
|
|
|
request->ref_count = 1;
|
2020-12-14 22:07:01 +00:00
|
|
|
|
|
|
|
return request;
|
|
|
|
}
|
|
|
|
|
2021-02-01 19:33:09 +00:00
|
|
|
/**
|
2021-01-29 14:41:22 +00:00
|
|
|
* gst_v4l2_decoder_set_render_delay:
|
2021-02-01 19:33:09 +00:00
|
|
|
* @self: a #GstV4l2Decoder pointer
|
|
|
|
* @delay: The expected render delay
|
2021-01-29 14:41:22 +00:00
|
|
|
*
|
|
|
|
* The decoder will adjust the number of allowed concurrent request in order
|
|
|
|
* to allow this delay. The same number of concurrent bitstream buffer will be
|
|
|
|
* used, so make sure to adjust the number of bitstream buffer.
|
|
|
|
*
|
|
|
|
* For per-slice decoder, this is the maximum number of pending slice, so the
|
|
|
|
* render backlog in frame may be less then the render delay.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
gst_v4l2_decoder_set_render_delay (GstV4l2Decoder * self, guint delay)
|
|
|
|
{
|
|
|
|
self->render_delay = delay;
|
|
|
|
}
|
|
|
|
|
2021-02-01 19:33:09 +00:00
|
|
|
/**
|
2021-01-29 14:41:22 +00:00
|
|
|
* gst_v4l2_decoder_get_render_delay:
|
2021-02-01 19:33:09 +00:00
|
|
|
* @self: a #GstV4l2Decoder pointer
|
2021-01-29 14:41:22 +00:00
|
|
|
*
|
|
|
|
* This function is used to avoid storing the render delay in multiple places.
|
|
|
|
*
|
|
|
|
* Returns: The currently configured render delay.
|
|
|
|
*/
|
|
|
|
guint
|
|
|
|
gst_v4l2_decoder_get_render_delay (GstV4l2Decoder * self)
|
|
|
|
{
|
|
|
|
return self->render_delay;
|
|
|
|
}
|
|
|
|
|
2024-05-27 12:28:18 +00:00
|
|
|
/**
|
|
|
|
* gst_v4l2_decoder_has_remove_bufs:
|
|
|
|
* @self: a #GstV4l2Decoder pointer
|
|
|
|
*
|
|
|
|
* Returns: TRUE if the video decoder driver allows to remove
|
|
|
|
* buffers from CAPTURE queue.
|
|
|
|
*/
|
|
|
|
gboolean
|
|
|
|
gst_v4l2_decoder_has_remove_bufs (GstV4l2Decoder * self)
|
|
|
|
{
|
|
|
|
return self->supports_remove_buffers;
|
|
|
|
}
|
|
|
|
|
2020-12-18 21:36:16 +00:00
|
|
|
GstV4l2Request *
|
|
|
|
gst_v4l2_request_ref (GstV4l2Request * request)
|
|
|
|
{
|
|
|
|
request->ref_count++;
|
|
|
|
return request;
|
|
|
|
}
|
2020-12-14 22:07:01 +00:00
|
|
|
|
2020-12-18 21:36:16 +00:00
|
|
|
static void
|
2020-02-15 03:03:17 +00:00
|
|
|
gst_v4l2_request_free (GstV4l2Request * request)
|
2020-12-18 21:36:16 +00:00
|
|
|
{
|
|
|
|
GstV4l2Decoder *decoder = request->decoder;
|
|
|
|
|
|
|
|
request->decoder = NULL;
|
|
|
|
close (request->fd);
|
|
|
|
gst_poll_free (request->poll);
|
|
|
|
g_free (request);
|
|
|
|
|
|
|
|
if (decoder)
|
|
|
|
g_object_unref (decoder);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
gst_v4l2_request_unref (GstV4l2Request * request)
|
2020-02-15 03:03:17 +00:00
|
|
|
{
|
2020-02-16 19:51:37 +00:00
|
|
|
GstV4l2Decoder *decoder = request->decoder;
|
2020-02-15 03:03:17 +00:00
|
|
|
gint ret;
|
|
|
|
|
2020-12-18 21:36:16 +00:00
|
|
|
g_return_if_fail (request->ref_count > 0);
|
|
|
|
|
|
|
|
if (--request->ref_count > 0)
|
2020-02-15 03:03:17 +00:00
|
|
|
return;
|
|
|
|
|
2020-02-16 19:51:37 +00:00
|
|
|
g_clear_pointer (&request->bitstream, gst_memory_unref);
|
2020-12-14 22:07:01 +00:00
|
|
|
g_clear_pointer (&request->pic_buf, gst_buffer_unref);
|
|
|
|
request->frame_num = G_MAXUINT32;
|
|
|
|
request->failed = FALSE;
|
|
|
|
request->hold_pic_buf = FALSE;
|
|
|
|
request->sub_request = FALSE;
|
2020-02-16 19:51:37 +00:00
|
|
|
|
|
|
|
if (request->pending) {
|
2020-07-01 16:28:05 +00:00
|
|
|
gint idx;
|
|
|
|
|
2021-12-21 15:59:37 +00:00
|
|
|
GST_DEBUG_OBJECT (decoder, "Freeing pending request %i.", request->fd);
|
2020-07-01 16:28:05 +00:00
|
|
|
|
2024-04-18 14:07:25 +00:00
|
|
|
idx = gst_vec_deque_find (decoder->pending_requests, NULL, request);
|
2020-07-01 16:28:05 +00:00
|
|
|
if (idx >= 0)
|
2024-04-18 14:07:25 +00:00
|
|
|
gst_vec_deque_drop_element (decoder->pending_requests, idx);
|
2020-07-01 16:28:05 +00:00
|
|
|
|
2020-02-16 19:51:37 +00:00
|
|
|
gst_v4l2_request_free (request);
|
|
|
|
return;
|
|
|
|
}
|
2020-02-15 03:03:17 +00:00
|
|
|
|
2021-12-21 15:59:37 +00:00
|
|
|
GST_TRACE_OBJECT (decoder, "Recycling request %i.", request->fd);
|
2020-03-20 16:37:41 +00:00
|
|
|
|
2020-02-15 03:03:17 +00:00
|
|
|
ret = ioctl (request->fd, MEDIA_REQUEST_IOC_REINIT, NULL);
|
|
|
|
if (ret < 0) {
|
|
|
|
GST_ERROR_OBJECT (request->decoder, "MEDIA_REQUEST_IOC_REINIT failed: %s",
|
|
|
|
g_strerror (errno));
|
|
|
|
gst_v4l2_request_free (request);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2024-04-18 14:07:25 +00:00
|
|
|
gst_vec_deque_push_tail (decoder->request_pool, request);
|
2020-12-18 21:36:16 +00:00
|
|
|
g_clear_object (&request->decoder);
|
2020-02-15 03:03:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
2020-12-14 22:07:01 +00:00
|
|
|
gst_v4l2_request_queue (GstV4l2Request * request, guint flags)
|
2020-02-15 03:03:17 +00:00
|
|
|
{
|
2020-12-14 22:07:01 +00:00
|
|
|
GstV4l2Decoder *decoder = request->decoder;
|
2020-02-15 03:03:17 +00:00
|
|
|
gint ret;
|
2021-01-29 14:41:22 +00:00
|
|
|
guint max_pending;
|
2020-02-15 03:03:17 +00:00
|
|
|
|
2021-12-21 15:59:37 +00:00
|
|
|
GST_TRACE_OBJECT (decoder, "Queuing request %i.", request->fd);
|
2020-12-14 22:07:01 +00:00
|
|
|
|
2022-03-23 14:36:28 +00:00
|
|
|
/* this would lead to stalls if we tried to use this feature and it wasn't
|
|
|
|
* supported. */
|
|
|
|
if ((flags & V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF)
|
|
|
|
&& !decoder->supports_holding_capture) {
|
|
|
|
GST_ERROR_OBJECT (decoder,
|
|
|
|
"Driver does not support holding capture buffer.");
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
if (!gst_v4l2_decoder_queue_sink_mem (decoder, request,
|
|
|
|
request->bitstream, request->frame_num, flags)) {
|
|
|
|
GST_ERROR_OBJECT (decoder, "Driver did not accept the bitstream data.");
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!request->sub_request &&
|
|
|
|
!gst_v4l2_decoder_queue_src_buffer (decoder, request->pic_buf)) {
|
|
|
|
GST_ERROR_OBJECT (decoder, "Driver did not accept the picture buffer.");
|
|
|
|
return FALSE;
|
|
|
|
}
|
2020-03-20 16:37:41 +00:00
|
|
|
|
2020-02-15 03:03:17 +00:00
|
|
|
ret = ioctl (request->fd, MEDIA_REQUEST_IOC_QUEUE, NULL);
|
|
|
|
if (ret < 0) {
|
2020-12-14 22:07:01 +00:00
|
|
|
GST_ERROR_OBJECT (decoder, "MEDIA_REQUEST_IOC_QUEUE, failed: %s",
|
2020-02-15 03:03:17 +00:00
|
|
|
g_strerror (errno));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
if (flags & V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF)
|
|
|
|
request->hold_pic_buf = TRUE;
|
|
|
|
|
2020-02-16 19:51:37 +00:00
|
|
|
request->pending = TRUE;
|
2024-04-18 14:07:25 +00:00
|
|
|
gst_vec_deque_push_tail (decoder->pending_requests,
|
2020-12-18 21:36:16 +00:00
|
|
|
gst_v4l2_request_ref (request));
|
2020-12-14 22:07:01 +00:00
|
|
|
|
2021-01-29 14:41:22 +00:00
|
|
|
max_pending = MAX (1, decoder->render_delay);
|
|
|
|
|
2024-04-18 14:07:25 +00:00
|
|
|
if (gst_vec_deque_get_length (decoder->pending_requests) > max_pending) {
|
2020-12-14 22:07:01 +00:00
|
|
|
GstV4l2Request *pending_req;
|
|
|
|
|
2024-04-18 14:07:25 +00:00
|
|
|
pending_req = gst_vec_deque_peek_head (decoder->pending_requests);
|
2021-01-27 20:53:49 +00:00
|
|
|
gst_v4l2_request_set_done (pending_req);
|
2020-12-14 22:07:01 +00:00
|
|
|
}
|
2020-02-16 19:51:37 +00:00
|
|
|
|
2020-02-15 03:03:17 +00:00
|
|
|
return TRUE;
|
|
|
|
}
|
2020-02-16 19:51:37 +00:00
|
|
|
|
|
|
|
gint
|
|
|
|
gst_v4l2_request_set_done (GstV4l2Request * request)
|
|
|
|
{
|
2020-12-14 22:07:01 +00:00
|
|
|
GstV4l2Decoder *decoder = request->decoder;
|
|
|
|
GstV4l2Request *pending_req = NULL;
|
2021-01-27 20:53:49 +00:00
|
|
|
gint ret;
|
2020-07-01 16:28:05 +00:00
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
if (!request->pending)
|
2021-01-27 20:53:49 +00:00
|
|
|
return 1;
|
|
|
|
|
2021-12-21 15:59:37 +00:00
|
|
|
GST_DEBUG_OBJECT (decoder, "Waiting for request %i to complete.",
|
|
|
|
request->fd);
|
|
|
|
|
2021-01-27 20:53:49 +00:00
|
|
|
ret = gst_poll_wait (request->poll, GST_SECOND);
|
2021-12-10 19:08:32 +00:00
|
|
|
if (ret == 0) {
|
2021-12-21 15:59:37 +00:00
|
|
|
GST_WARNING_OBJECT (decoder, "Request %i took too long.", request->fd);
|
2021-12-10 19:08:32 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ret < 0) {
|
2021-12-21 15:59:37 +00:00
|
|
|
GST_WARNING_OBJECT (decoder, "Request %i error: %s (%i)",
|
|
|
|
request->fd, g_strerror (errno), errno);
|
2021-01-27 20:53:49 +00:00
|
|
|
return ret;
|
2021-12-10 19:08:32 +00:00
|
|
|
}
|
2020-07-01 16:28:05 +00:00
|
|
|
|
2024-04-18 14:07:25 +00:00
|
|
|
while ((pending_req = gst_vec_deque_pop_head (decoder->pending_requests))) {
|
2020-12-14 22:07:01 +00:00
|
|
|
gst_v4l2_decoder_dequeue_sink (decoder);
|
|
|
|
g_clear_pointer (&pending_req->bitstream, gst_memory_unref);
|
2020-07-01 16:28:05 +00:00
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
if (!pending_req->hold_pic_buf) {
|
|
|
|
guint32 frame_num = G_MAXUINT32;
|
|
|
|
|
|
|
|
if (!gst_v4l2_decoder_dequeue_src (decoder, &frame_num)) {
|
|
|
|
pending_req->failed = TRUE;
|
|
|
|
} else if (frame_num != pending_req->frame_num) {
|
|
|
|
GST_WARNING_OBJECT (decoder,
|
|
|
|
"Requested frame %u, but driver returned frame %u.",
|
|
|
|
pending_req->frame_num, frame_num);
|
|
|
|
pending_req->failed = TRUE;
|
|
|
|
}
|
2020-07-01 16:28:05 +00:00
|
|
|
}
|
2020-12-14 22:07:01 +00:00
|
|
|
|
|
|
|
pending_req->pending = FALSE;
|
2020-12-18 21:36:16 +00:00
|
|
|
gst_v4l2_request_unref (pending_req);
|
2020-12-14 22:07:01 +00:00
|
|
|
|
|
|
|
if (pending_req == request)
|
|
|
|
break;
|
2020-02-16 19:51:37 +00:00
|
|
|
}
|
|
|
|
|
2020-12-14 22:07:01 +00:00
|
|
|
/* Pending request must be in the pending request list */
|
|
|
|
g_assert (pending_req == request);
|
2020-02-16 19:51:37 +00:00
|
|
|
|
2021-01-27 20:53:49 +00:00
|
|
|
return ret;
|
2020-02-16 19:51:37 +00:00
|
|
|
}
|
2020-12-14 22:07:01 +00:00
|
|
|
|
|
|
|
gboolean
|
|
|
|
gst_v4l2_request_failed (GstV4l2Request * request)
|
|
|
|
{
|
|
|
|
return request->failed;
|
|
|
|
}
|
2021-11-30 22:05:22 +00:00
|
|
|
|
|
|
|
GstBuffer *
|
|
|
|
gst_v4l2_request_dup_pic_buf (GstV4l2Request * request)
|
|
|
|
{
|
|
|
|
return gst_buffer_ref (request->pic_buf);
|
|
|
|
}
|
2021-12-21 15:59:37 +00:00
|
|
|
|
|
|
|
gint
|
|
|
|
gst_v4l2_request_get_fd (GstV4l2Request * request)
|
|
|
|
{
|
|
|
|
return request->fd;
|
|
|
|
}
|