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avtp: Introduce AVTP CVF depayloader element

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This patch introduces the AVTP Compressed Video Format (CVF) depayloader
specified in IEEE 1722-2016 section 8. Currently, this depayloader only
supports H.264 encapsulation described in section 8.5.

Is also worth noting that only single NAL units are handled: aggregated
and fragmented payloads are not handled.

As stated in AVTP CVF payloader patch, AVTP timestamp is used to define
outgoing buffer DTS, while the H264_TIMESTAMP defines outgoing buffer
PTS.

When an AVTP packet is received, the extracted H.264 NAL unit is added to
a "stash" (the out_buffer) of H.264 NAL units. This "stash" is pushed
downstream as single buffer (with NAL units aggregated according to format
used on GStreamer, based on ISO/IEC 14496-15) as soon as we get the AVTP
packet with M bit set.

This patch groups NAL units using a fixed NAL size lenght, sent downstream
on the `codec_data` capability.

The "stash" of NAL units can be prematurely sent downstream if a
discontinuity (a missing SEQNUM) happens.

This patch reuses the infra provided by gstavtpbasedepayload.c.
This commit is contained in:
Ederson de Souza 2019-03-12 15:46:16 -07:00
parent b056297eea
commit 45d2f5a779
5 changed files with 608 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
ext/avtp/Makefile.am
View file

@ -6,6 +6,7 @@ libgstavtp_la_SOURCES = \
gstavtpaafpay.c \
gstavtpbasedepayload.c \
gstavtpbasepayload.c \
gstavtpcvfdepay.c \
gstavtpcvfpay.c \
gstavtpsink.c \
gstavtpsrc.c
@ -29,6 +30,7 @@ noinst_HEADERS = \
gstavtpaafpay.h \
gstavtpbasedepayload.h \
gstavtpbasepayload.h \
gstavtpcvfdepay.h \
gstavtpcvfpay.h \
gstavtpsink.h \
gstavtpsrc.h

3
ext/avtp/gstavtp.c
View file

@ -52,6 +52,7 @@
#include "gstavtpaafdepay.h"
#include "gstavtpaafpay.h"
#include "gstavtpcvfdepay.h"
#include "gstavtpcvfpay.h"
#include "gstavtpsink.h"
#include "gstavtpsrc.h"
@ -69,6 +70,8 @@ plugin_init (GstPlugin * plugin)
return FALSE;
if (!gst_avtp_cvf_pay_plugin_init (plugin))
return FALSE;
if (!gst_avtp_cvf_depay_plugin_init (plugin))
return FALSE;
return TRUE;
}

539
ext/avtp/gstavtpcvfdepay.c Normal file
View file

@ -0,0 +1,539 @@
/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:element-avtpcvfdepay
* @see_also: avtpcvfpay
*
* De-payload CVF AVTPDUs into compressed video (currently, only H.264) according
* to IEEE 1722-2016. For detailed information see
* https://standards.ieee.org/standard/1722-2016.html.
*
* <refsect2>
* <title>Example pipeline</title>
* |[
* gst-launch-1.0 avtpsrc ! avtpcvfdepay ! decodebin ! videoconvert ! autovideosink
* ]| This example pipeline will de-payload H.264 video from the AVTPDUs, decode
* and play them. Refer to the avtpcvfpay example to payload H.264 and send the
* AVTP stream.
* </refsect2>
*/
#include <avtp.h>
#include <avtp_cvf.h>
#include <gst/audio/audio-format.h>
#include <arpa/inet.h>
#include "gstavtpcvfdepay.h"
GST_DEBUG_CATEGORY_STATIC (avtpcvfdepay_debug);
#define GST_CAT_DEFAULT avtpcvfdepay_debug
/* prototypes */
static GstFlowReturn gst_avtp_cvf_depay_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer);
#define AVTP_CVF_H264_HEADER_SIZE (sizeof(struct avtp_stream_pdu) + sizeof(guint32))
#define FU_A_HEADER_SIZE (sizeof(guint16))
#define STAP_A_TYPE 24
#define STAP_B_TYPE 25
#define MTAP16_TYPE 26
#define MTAP24_TYPE 27
#define FU_A_TYPE 28
#define FU_B_TYPE 29
#define NAL_TYPE_MASK 0x1f
/* pad templates */
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h264,"
" stream-format = (string) avc, alignment = (string) au")
);
G_DEFINE_TYPE (GstAvtpCvfDepay, gst_avtp_cvf_depay,
GST_TYPE_AVTP_BASE_DEPAYLOAD);
static void
gst_avtp_cvf_depay_class_init (GstAvtpCvfDepayClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstAvtpBaseDepayloadClass *avtpbasedepayload_class =
GST_AVTP_BASE_DEPAYLOAD_CLASS (klass);
gst_element_class_add_static_pad_template (element_class, &src_template);
gst_element_class_set_static_metadata (element_class,
"AVTP Compressed Video Format (CVF) depayloader",
"Codec/Depayloader/Network/AVTP",
"Extracts compressed video from CVF AVTPDUs",
"Ederson de Souza <ederson.desouza@intel.com>");
avtpbasedepayload_class->chain = GST_DEBUG_FUNCPTR (gst_avtp_cvf_depay_chain);
GST_DEBUG_CATEGORY_INIT (avtpcvfdepay_debug, "avtpcvfdepay",
0, "debug category for avtpcvfdepay element");
}
static void
gst_avtp_cvf_depay_init (GstAvtpCvfDepay * avtpcvfdepay)
{
avtpcvfdepay->out_buffer = NULL;
avtpcvfdepay->seqnum = 0;
}
static gboolean
gst_avtp_cvf_depay_push_caps (GstAvtpCvfDepay * avtpcvfdepay)
{
GstAvtpBaseDepayload *avtpbasedepayload =
GST_AVTP_BASE_DEPAYLOAD (avtpcvfdepay);
GstBuffer *codec_data;
GstEvent *event;
GstMapInfo map;
GstCaps *caps;
GST_DEBUG_OBJECT (avtpcvfdepay, "Setting src pad caps");
/* Send simple codec data, with only the NAL size len, no SPS/PPS.
* Below, 7 is the minimal codec_data size, when no SPS/PPS is sent */
codec_data = gst_buffer_new_allocate (NULL, 7, NULL);
gst_buffer_map (codec_data, &map, GST_MAP_READWRITE);
memset (map.data, 0, map.size);
map.data[0] = 1; /* version */
map.data[4] = 0x03 | 0xfc; /* nal len size (4) - 1. Other 6 bits are 1 */
map.data[5] = 0xe0; /* first 3 bits are 1 */
gst_buffer_unmap (codec_data, &map);
caps = gst_pad_get_pad_template_caps (avtpbasedepayload->srcpad);
caps = gst_caps_make_writable (caps);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, codec_data, NULL);
event = gst_event_new_caps (caps);
gst_buffer_unref (codec_data);
gst_caps_unref (caps);
return gst_pad_push_event (avtpbasedepayload->srcpad, event);
}
static void
gst_avtp_cvf_depay_push (GstAvtpCvfDepay * avtpcvfdepay)
{
GstAvtpBaseDepayload *avtpbasedepayload =
GST_AVTP_BASE_DEPAYLOAD (avtpcvfdepay);
if (G_UNLIKELY (!gst_pad_has_current_caps (avtpbasedepayload->srcpad))) {
guint64 pts_m;
guint32 dts, pts;
if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= GST_LEVEL_DEBUG) {
GstClock *clock = gst_element_get_clock (GST_ELEMENT_CAST (avtpcvfdepay));
if (clock == NULL) {
GST_DEBUG_OBJECT (avtpcvfdepay,
"Sending initial CAPS and SEGMENT, no pipeline time.");
} else {
GST_DEBUG_OBJECT (avtpcvfdepay,
"Sending initial CAPS and SEGMENT, pipeline time: %"
GST_TIME_FORMAT, GST_TIME_ARGS (gst_clock_get_time (clock)));
}
}
if (!gst_avtp_cvf_depay_push_caps (avtpcvfdepay)) {
GST_ELEMENT_ERROR (avtpcvfdepay, CORE, CAPS, (NULL), (NULL));
return;
}
if (!gst_avtp_base_depayload_push_segment_event (avtpbasedepayload,
GST_BUFFER_PTS (avtpcvfdepay->out_buffer))) {
GST_ELEMENT_ERROR (avtpcvfdepay, CORE, EVENT,
("Could not send SEGMENT event"), (NULL));
}
/* Now that we sent our segment starting on the first Presentation
* time available, `avtpbasedepayload->prev_ptime` saves that value,
* to be a reference for calculating future buffer timestamps from
* the AVTP timestamps (avtp_ts and h264_ts).
*
* However, decode timestamps can be smaller than presentation
* timestamps. So we can't use `avtpbasedepayload->prev_time` as
* reference to calculate them. Instead, here, we calculate the
* first decode timestamp and save it on `avtpcvfdepay->prev_ptime`.
*
* The method used to calculate the "absolute" decode timestamp (DTS)
* from presentation timestamp is as follows:
*
* DTS = dts > pts ? (PTSm - 1) | dts : PTSm | dts
*
* Where:
* dts: 32 bits gPTP decode timestamp
* pts: 32 bits gPTP presentation timestamp
* PTSm: 32 most signifactive bits of the "absolute" presentation
* timestamp
*
* This allow us to handle cases where the pts ends up being smaller
* than dts due pts falling after an AVTP timestamp wrapping.
*/
pts = GST_BUFFER_PTS (avtpcvfdepay->out_buffer);
dts = GST_BUFFER_DTS (avtpcvfdepay->out_buffer);
pts_m = avtpbasedepayload->prev_ptime & 0xFFFFFFFF00000000ULL;
avtpbasedepayload->prev_ptime = dts > pts ? (pts_m -=
(1ULL << 32)) | dts : pts_m | dts;
GST_DEBUG_OBJECT (avtpcvfdepay, "prev_ptime set to %" GST_TIME_FORMAT,
GST_TIME_ARGS (avtpbasedepayload->prev_ptime));
}
/* At this point, we're sure segment was sent, so we can properly calc
* buffer timestamps */
GST_DEBUG_OBJECT (avtpcvfdepay, "Converting %" GST_TIME_FORMAT " to PTS",
GST_TIME_ARGS (GST_BUFFER_PTS (avtpcvfdepay->out_buffer)));
GST_BUFFER_PTS (avtpcvfdepay->out_buffer) =
gst_avtp_base_depayload_tstamp_to_ptime (avtpbasedepayload, GST_BUFFER_PTS
(avtpcvfdepay->out_buffer), avtpbasedepayload->prev_ptime);
GST_DEBUG_OBJECT (avtpcvfdepay, "Converting %" GST_TIME_FORMAT " to DTS",
GST_TIME_ARGS (GST_BUFFER_DTS (avtpcvfdepay->out_buffer)));
GST_BUFFER_DTS (avtpcvfdepay->out_buffer) =
gst_avtp_base_depayload_tstamp_to_ptime (avtpbasedepayload, GST_BUFFER_DTS
(avtpcvfdepay->out_buffer), avtpbasedepayload->prev_ptime);
/* Use DTS as prev_ptime as it is smaller or equal to PTS, so that
* next calculations of PTS/DTS won't wrap too early */
avtpbasedepayload->prev_ptime = GST_BUFFER_DTS (avtpcvfdepay->out_buffer);
gst_pad_push (GST_AVTP_BASE_DEPAYLOAD (avtpcvfdepay)->srcpad,
avtpcvfdepay->out_buffer);
avtpcvfdepay->out_buffer = NULL;
}
static void
gst_avtp_cvf_depay_push_and_discard (GstAvtpCvfDepay * avtpcvfdepay)
{
/* Push everything we have, hopefully decoder can handle it */
if (avtpcvfdepay->out_buffer != NULL) {
GST_DEBUG_OBJECT (avtpcvfdepay, "Pushing incomplete buffers");
gst_avtp_cvf_depay_push (avtpcvfdepay);
}
}
static gboolean
gst_avtp_cvf_depay_validate_avtpdu (GstAvtpCvfDepay * avtpcvfdepay,
GstMapInfo * map)
{
GstAvtpBaseDepayload *avtpbasedepayload =
GST_AVTP_BASE_DEPAYLOAD (avtpcvfdepay);
struct avtp_stream_pdu *pdu;
gboolean result = FALSE;
guint64 val;
guint val32;
gint r;
if (G_UNLIKELY (map->size < AVTP_CVF_H264_HEADER_SIZE)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"Incomplete AVTP header, expected it to have size of %zd, got %zd",
AVTP_CVF_H264_HEADER_SIZE, map->size);
goto end;
}
pdu = (struct avtp_stream_pdu *) map->data;
r = avtp_pdu_get ((struct avtp_common_pdu *) pdu, AVTP_FIELD_SUBTYPE, &val32);
g_assert (r == 0);
if (G_UNLIKELY (val32 != AVTP_SUBTYPE_CVF)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"Unexpected AVTP header subtype %d, expected %d", val32,
AVTP_SUBTYPE_CVF);
goto end;
}
r = avtp_pdu_get ((struct avtp_common_pdu *) pdu, AVTP_FIELD_VERSION, &val32);
g_assert (r == 0);
if (G_UNLIKELY (val32 != 0)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"Unexpected AVTP header version %d, expected %d", val32, 0);
goto end;
}
r = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_SV, &val);
g_assert (r == 0);
if (G_UNLIKELY (val != 1)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"Unexpected AVTP header stream valid %ld, expected %d", val, 1);
goto end;
}
r = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_STREAM_ID, &val);
g_assert (r == 0);
if (G_UNLIKELY (val != avtpbasedepayload->streamid)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"Unexpected AVTP header stream id 0x%lx, expected 0x%lx", val,
avtpbasedepayload->streamid);
goto end;
}
r = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_FORMAT, &val);
g_assert (r == 0);
if (G_UNLIKELY (val != AVTP_CVF_FORMAT_RFC)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"Unexpected AVTP header format %ld, expected %d", val,
AVTP_CVF_FORMAT_RFC);
goto end;
}
r = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_FORMAT_SUBTYPE, &val);
g_assert (r == 0);
if (G_UNLIKELY (val != AVTP_CVF_FORMAT_SUBTYPE_H264)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"Unsupported AVTP header format subtype %ld", val);
goto end;
}
r = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_STREAM_DATA_LEN, &val);
g_assert (r == 0);
if (G_UNLIKELY (map->size < sizeof (*pdu) + val)) {
GST_WARNING_OBJECT (avtpcvfdepay,
"AVTP packet size %ld too small, expected at least %lu",
map->size - AVTP_CVF_H264_HEADER_SIZE, sizeof (*pdu) + val);
goto end;
}
r = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_SEQ_NUM, &val);
g_assert (r == 0);
if (G_UNLIKELY (val != avtpcvfdepay->seqnum)) {
GST_INFO_OBJECT (avtpcvfdepay,
"Unexpected AVTP header seq num %lu, expected %u", val,
avtpcvfdepay->seqnum);
avtpcvfdepay->seqnum = val;
/* This is not a reason to drop the packet, but it may be a good moment
* to push everything we have - maybe we lost the M packet? */
gst_avtp_cvf_depay_push_and_discard (avtpcvfdepay);
}
avtpcvfdepay->seqnum++;
result = TRUE;
end:
return result;
}
static guint8
gst_avtp_cvf_depay_get_nal_type (GstMapInfo * map)
{
struct avtp_stream_pdu *pdu;
struct avtp_cvf_h264_payload *pay;
guint8 nal_header, nal_type;
pdu = (struct avtp_stream_pdu *) map->data;
pay = (struct avtp_cvf_h264_payload *) pdu->avtp_payload;
nal_header = pay->h264_data[0];
nal_type = nal_header & NAL_TYPE_MASK;
return nal_type;
}
static void
gst_avtp_cvf_depay_get_avtp_timestamps (GstAvtpCvfDepay * avtpcvfdepay,
GstMapInfo * map, GstClockTime * pts, GstClockTime * dts)
{
struct avtp_stream_pdu *pdu;
guint64 avtp_time, h264_time, tv, ptv;
gint res;
*pts = GST_CLOCK_TIME_NONE;
*dts = GST_CLOCK_TIME_NONE;
pdu = (struct avtp_stream_pdu *) map->data;
res = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_TV, &tv);
g_assert (res == 0);
if (tv == 1) {
res = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_TIMESTAMP, &avtp_time);
g_assert (res == 0);
*dts = avtp_time;
}
res = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_H264_PTV, &ptv);
g_assert (res == 0);
if (ptv == 1) {
res = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_H264_TIMESTAMP, &h264_time);
g_assert (res == 0);
*pts = h264_time;
}
}
static void
gst_avtp_cvf_depay_internal_push (GstAvtpCvfDepay * avtpcvfdepay,
GstBuffer * buffer, gboolean M)
{
GST_LOG_OBJECT (avtpcvfdepay,
"Adding buffer of size %lu (nalu size %lu) to out_buffer",
gst_buffer_get_size (buffer),
gst_buffer_get_size (buffer) - sizeof (guint32));
if (avtpcvfdepay->out_buffer) {
avtpcvfdepay->out_buffer =
gst_buffer_append (avtpcvfdepay->out_buffer, buffer);
} else {
avtpcvfdepay->out_buffer = buffer;
}
/* We only truly push to decoder when we get the last video buffer */
if (M) {
gst_avtp_cvf_depay_push (avtpcvfdepay);
}
}
static void
gst_avtp_cvf_depay_get_M (GstAvtpCvfDepay * avtpcvfdepay, GstMapInfo * map,
gboolean * M)
{
struct avtp_stream_pdu *pdu;
guint64 val;
gint res;
pdu = (struct avtp_stream_pdu *) map->data;
res = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_M, &val);
g_assert (res == 0);
*M = val;
}
static void
gst_avtp_cvf_depay_get_nalu_size (GstAvtpCvfDepay * avtpcvfdepay,
GstMapInfo * map, guint16 * nalu_size)
{
struct avtp_stream_pdu *pdu;
guint64 val;
gint res;
pdu = (struct avtp_stream_pdu *) map->data;
res = avtp_cvf_pdu_get (pdu, AVTP_CVF_FIELD_STREAM_DATA_LEN, &val);
g_assert (res == 0);
/* We need to discount the H.264 header field */
*nalu_size = val - sizeof (guint32);
}
static GstFlowReturn
gst_avtp_cvf_depay_handle_fragment_a (GstAvtpCvfDepay * avtpcvfdepay,
GstBuffer * avtpdu, GstMapInfo * map)
{
GstFlowReturn ret = GST_FLOW_OK;
return ret;
}
static GstFlowReturn
gst_avtp_cvf_depay_handle_single_nal (GstAvtpCvfDepay * avtpcvfdepay,
GstBuffer * avtpdu, GstMapInfo * map)
{
GstClockTime pts, dts;
GstMapInfo map_nal;
guint16 nalu_size;
GstBuffer *nal;
gboolean M;
GST_DEBUG_OBJECT (avtpcvfdepay, "Handling single NAL unit");
gst_avtp_cvf_depay_get_avtp_timestamps (avtpcvfdepay, map, &pts, &dts);
gst_avtp_cvf_depay_get_nalu_size (avtpcvfdepay, map, &nalu_size);
gst_avtp_cvf_depay_get_M (avtpcvfdepay, map, &M);
/* Four is the number of bytes containing NALu size just before the NALu */
nal = gst_buffer_new_allocate (NULL, 4, NULL);
gst_buffer_map (nal, &map_nal, GST_MAP_READWRITE);
/* Add NAL size just before the NAL itself (4 bytes before it) */
map_nal.data[0] = map_nal.data[1] = 0;
map_nal.data[2] = nalu_size >> 8;
map_nal.data[3] = nalu_size & 0xff;
gst_buffer_unmap (nal, &map_nal);
gst_buffer_copy_into (nal, avtpdu, GST_BUFFER_COPY_MEMORY,
AVTP_CVF_H264_HEADER_SIZE, nalu_size);
GST_BUFFER_PTS (nal) = pts;
GST_BUFFER_DTS (nal) = dts;
gst_avtp_cvf_depay_internal_push (avtpcvfdepay, nal, M);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_avtp_cvf_depay_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
GstAvtpCvfDepay *avtpcvfdepay = GST_AVTP_CVF_DEPAY (parent);
GstFlowReturn ret = GST_FLOW_OK;
GstMapInfo map;
gst_buffer_map (buffer, &map, GST_MAP_READ);
if (!gst_avtp_cvf_depay_validate_avtpdu (avtpcvfdepay, &map)) {
GST_WARNING_OBJECT (avtpcvfdepay, "Invalid AVTPDU buffer, dropping it");
goto end;
}
switch (gst_avtp_cvf_depay_get_nal_type (&map)) {
case STAP_A_TYPE:
case STAP_B_TYPE:
case MTAP16_TYPE:
case MTAP24_TYPE:
GST_WARNING_OBJECT (avtpcvfdepay,
"AVTP aggregation packets not supported, dropping it");
break;
case FU_A_TYPE:
ret = gst_avtp_cvf_depay_handle_fragment_a (avtpcvfdepay, buffer, &map);
break;
case FU_B_TYPE:
GST_WARNING_OBJECT (avtpcvfdepay,
"AVTP fragmentation FU-B packets not supported, dropping it");
break;
default:
ret = gst_avtp_cvf_depay_handle_single_nal (avtpcvfdepay, buffer, &map);
break;
}
end:
gst_buffer_unmap (buffer, &map);
gst_buffer_unref (buffer);
return ret;
}
gboolean
gst_avtp_cvf_depay_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "avtpcvfdepay", GST_RANK_NONE,
GST_TYPE_AVTP_CVF_DEPAY);
}

63
ext/avtp/gstavtpcvfdepay.h Normal file
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@ -0,0 +1,63 @@
/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef __GST_AVTP_CVF_DEPAY_H__
#define __GST_AVTP_CVF_DEPAY_H__
#include <gst/gst.h>
#include "gstavtpbasedepayload.h"
G_BEGIN_DECLS
#define GST_TYPE_AVTP_CVF_DEPAY (gst_avtp_cvf_depay_get_type())
#define GST_AVTP_CVF_DEPAY(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AVTP_CVF_DEPAY,GstAvtpCvfDepay))
#define GST_AVTP_CVF_DEPAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AVTP_CVF_DEPAY,GstAvtpCvfDepayClass))
#define GST_IS_AVTP_CVF_DEPAY(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AVTP_CVF_DEPAY))
#define GST_IS_AVTP_CVF_DEPAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AVTP_CVF_DEPAY))
typedef struct _GstAvtpCvfDepay GstAvtpCvfDepay;
typedef struct _GstAvtpCvfDepayClass GstAvtpCvfDepayClass;
struct _GstAvtpCvfDepay
{
GstAvtpBaseDepayload depayload;
guint8 seqnum;
GstBuffer *out_buffer;
};
struct _GstAvtpCvfDepayClass
{
GstAvtpBaseDepayloadClass parent_class;
};
GType gst_avtp_cvf_depay_get_type (void);
gboolean gst_avtp_cvf_depay_plugin_init (GstPlugin * plugin);
G_END_DECLS
#endif /* __GST_AVTP_CVF_DEPAY_H__ */

1
ext/avtp/meson.build
View file

@ -2,6 +2,7 @@ avtp_sources = [
'gstavtp.c',
'gstavtpaafdepay.c',
'gstavtpaafpay.c',
'gstavtpcvfdepay.c',
'gstavtpcvfpay.c',
'gstavtpbasedepayload.c',
'gstavtpbasepayload.c',