mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-03 15:06:34 +00:00
2cce1247da
Split plugin into features including dynamic types which can be indiviually registered during a static build. More details here: https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/199 https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/661 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/876>
690 lines
21 KiB
C
690 lines
21 KiB
C
/* GStreamer
|
|
* Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/*
|
|
* based on http://developer.apple.com/quicktime/icefloe/dispatch026.html
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <gst/rtp/gstrtpbuffer.h>
|
|
|
|
#include <string.h>
|
|
#include "gstisomp4elements.h"
|
|
#include "gstrtpxqtdepay.h"
|
|
|
|
#define MAKE_TLV(a,b) (((a)<<8)|(b))
|
|
|
|
#define TLV_sd MAKE_TLV ('s','d')
|
|
#define TLV_qt MAKE_TLV ('q','t')
|
|
#define TLV_ti MAKE_TLV ('t','i')
|
|
#define TLV_ly MAKE_TLV ('l','y')
|
|
#define TLV_vo MAKE_TLV ('v','o')
|
|
#define TLV_mx MAKE_TLV ('m','x')
|
|
#define TLV_tr MAKE_TLV ('t','r')
|
|
#define TLV_tw MAKE_TLV ('t','w')
|
|
#define TLV_th MAKE_TLV ('t','h')
|
|
#define TLV_la MAKE_TLV ('l','a')
|
|
#define TLV_rt MAKE_TLV ('r','t')
|
|
#define TLV_gm MAKE_TLV ('g','m')
|
|
#define TLV_oc MAKE_TLV ('o','c')
|
|
#define TLV_cr MAKE_TLV ('c','r')
|
|
#define TLV_du MAKE_TLV ('d','u')
|
|
#define TLV_po MAKE_TLV ('p','o')
|
|
|
|
#define QT_UINT32(a) (GST_READ_UINT32_BE(a))
|
|
#define QT_UINT24(a) (GST_READ_UINT32_BE(a) >> 8)
|
|
#define QT_UINT16(a) (GST_READ_UINT16_BE(a))
|
|
#define QT_UINT8(a) (GST_READ_UINT8(a))
|
|
#define QT_FP32(a) ((GST_READ_UINT32_BE(a))/65536.0)
|
|
#define QT_FP16(a) ((GST_READ_UINT16_BE(a))/256.0)
|
|
#define QT_FOURCC(a) (GST_READ_UINT32_LE(a))
|
|
#define QT_UINT64(a) ((((guint64)QT_UINT32(a))<<32)|QT_UINT32(((guint8 *)a)+4))
|
|
|
|
#define FOURCC_avc1 GST_MAKE_FOURCC('a','v','c','1')
|
|
#define FOURCC_avc3 GST_MAKE_FOURCC('a','v','c','3')
|
|
#define FOURCC_avcC GST_MAKE_FOURCC('a','v','c','C')
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (rtpxqtdepay_debug);
|
|
#define GST_CAT_DEFAULT (rtpxqtdepay_debug)
|
|
|
|
/* RtpXQTDepay signals and args */
|
|
enum
|
|
{
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
};
|
|
|
|
static GstStaticPadTemplate gst_rtp_xqt_depay_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
static GstStaticPadTemplate gst_rtp_xqt_depay_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("application/x-rtp, "
|
|
"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
|
|
"media = (string) { \"audio\", \"video\" }, clock-rate = (int) [1, MAX], "
|
|
"encoding-name = (string) { \"X-QT\", \"X-QUICKTIME\" }")
|
|
);
|
|
|
|
#define gst_rtp_xqt_depay_parent_class parent_class
|
|
G_DEFINE_TYPE (GstRtpXQTDepay, gst_rtp_xqt_depay, GST_TYPE_RTP_BASE_DEPAYLOAD);
|
|
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (rtpxqtdepay, "rtpxqtdepay",
|
|
GST_RANK_MARGINAL, GST_TYPE_RTP_XQT_DEPAY, isomp4_element_init (plugin));
|
|
|
|
static void gst_rtp_xqt_depay_finalize (GObject * object);
|
|
|
|
static gboolean gst_rtp_xqt_depay_setcaps (GstRTPBaseDepayload * depayload,
|
|
GstCaps * caps);
|
|
static GstBuffer *gst_rtp_xqt_depay_process (GstRTPBaseDepayload * depayload,
|
|
GstBuffer * buf);
|
|
|
|
static GstStateChangeReturn gst_rtp_xqt_depay_change_state (GstElement *
|
|
element, GstStateChange transition);
|
|
|
|
|
|
static void
|
|
gst_rtp_xqt_depay_class_init (GstRtpXQTDepayClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
|
|
|
|
gobject_class = (GObjectClass *) klass;
|
|
gstelement_class = (GstElementClass *) klass;
|
|
gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
gobject_class->finalize = gst_rtp_xqt_depay_finalize;
|
|
|
|
gstelement_class->change_state = gst_rtp_xqt_depay_change_state;
|
|
|
|
gstrtpbasedepayload_class->set_caps = gst_rtp_xqt_depay_setcaps;
|
|
gstrtpbasedepayload_class->process = gst_rtp_xqt_depay_process;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (rtpxqtdepay_debug, "rtpxqtdepay", 0,
|
|
"QT Media RTP Depayloader");
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_rtp_xqt_depay_src_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_rtp_xqt_depay_sink_template);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"RTP packet depayloader", "Codec/Depayloader/Network",
|
|
"Extracts Quicktime audio/video from RTP packets",
|
|
"Wim Taymans <wim@fluendo.com>");
|
|
}
|
|
|
|
static void
|
|
gst_rtp_xqt_depay_init (GstRtpXQTDepay * rtpxqtdepay)
|
|
{
|
|
rtpxqtdepay->adapter = gst_adapter_new ();
|
|
}
|
|
|
|
static void
|
|
gst_rtp_xqt_depay_finalize (GObject * object)
|
|
{
|
|
GstRtpXQTDepay *rtpxqtdepay;
|
|
|
|
rtpxqtdepay = GST_RTP_XQT_DEPAY (object);
|
|
|
|
g_object_unref (rtpxqtdepay->adapter);
|
|
rtpxqtdepay->adapter = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static gboolean
|
|
gst_rtp_quicktime_parse_sd (GstRtpXQTDepay * rtpxqtdepay, guint8 * data,
|
|
guint data_len)
|
|
{
|
|
gint len;
|
|
guint32 fourcc;
|
|
|
|
if (data_len < 8)
|
|
goto too_short;
|
|
|
|
len = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];
|
|
if (len > data_len)
|
|
goto too_short;
|
|
|
|
fourcc = QT_FOURCC (data + 4);
|
|
|
|
GST_DEBUG_OBJECT (rtpxqtdepay, "parsing %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (fourcc));
|
|
|
|
switch (fourcc) {
|
|
case FOURCC_avc1:
|
|
case FOURCC_avc3:
|
|
{
|
|
guint32 chlen;
|
|
|
|
if (len < 0x56)
|
|
goto too_short;
|
|
len -= 0x56;
|
|
data += 0x56;
|
|
|
|
/* find avcC */
|
|
while (len >= 8) {
|
|
chlen = QT_UINT32 (data);
|
|
fourcc = QT_FOURCC (data + 4);
|
|
if (fourcc == FOURCC_avcC) {
|
|
GstBuffer *buf;
|
|
gint size;
|
|
GstCaps *caps;
|
|
|
|
GST_DEBUG_OBJECT (rtpxqtdepay, "found avcC codec_data in sd, %u",
|
|
chlen);
|
|
|
|
/* parse, if found */
|
|
if (chlen < len)
|
|
size = chlen - 8;
|
|
else
|
|
size = len - 8;
|
|
|
|
buf = gst_buffer_new_and_alloc (size);
|
|
gst_buffer_fill (buf, 0, data + 8, size);
|
|
caps = gst_caps_new_simple ("video/x-h264",
|
|
"codec_data", GST_TYPE_BUFFER, buf, NULL);
|
|
gst_buffer_unref (buf);
|
|
gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD (rtpxqtdepay)->srcpad, caps);
|
|
gst_caps_unref (caps);
|
|
break;
|
|
}
|
|
len -= chlen;
|
|
data += chlen;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
too_short:
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_rtp_xqt_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
|
|
{
|
|
GstStructure *structure;
|
|
gint clock_rate = 90000; /* default */
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
gst_structure_get_int (structure, "clock-rate", &clock_rate);
|
|
depayload->clock_rate = clock_rate;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstBuffer *
|
|
gst_rtp_xqt_depay_process (GstRTPBaseDepayload * depayload, GstBuffer * buf)
|
|
{
|
|
GstRtpXQTDepay *rtpxqtdepay;
|
|
GstBuffer *outbuf = NULL;
|
|
gboolean m;
|
|
GstRTPBuffer rtp = { NULL };
|
|
|
|
rtpxqtdepay = GST_RTP_XQT_DEPAY (depayload);
|
|
|
|
gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp);
|
|
|
|
if (GST_BUFFER_IS_DISCONT (buf)) {
|
|
/* discont, clear adapter and try to find a new packet start */
|
|
gst_adapter_clear (rtpxqtdepay->adapter);
|
|
rtpxqtdepay->need_resync = TRUE;
|
|
GST_DEBUG_OBJECT (rtpxqtdepay, "we need resync");
|
|
}
|
|
|
|
m = gst_rtp_buffer_get_marker (&rtp);
|
|
GST_LOG_OBJECT (rtpxqtdepay, "marker: %d", m);
|
|
|
|
{
|
|
gint payload_len;
|
|
guint avail;
|
|
guint8 *payload;
|
|
guint8 ver, pck;
|
|
gboolean s, q, l, d;
|
|
|
|
payload_len = gst_rtp_buffer_get_payload_len (&rtp);
|
|
payload = gst_rtp_buffer_get_payload (&rtp);
|
|
|
|
/* 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | VER |PCK|S|Q|L| RES |D| QuickTime Payload ID |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
if (payload_len <= 4)
|
|
goto wrong_length;
|
|
|
|
ver = (payload[0] & 0xf0) >> 4;
|
|
if (ver > 1)
|
|
goto wrong_version;
|
|
|
|
pck = (payload[0] & 0x0c) >> 2;
|
|
if (pck == 0)
|
|
goto pck_reserved;
|
|
|
|
s = (payload[0] & 0x02) != 0; /* contains sync sample */
|
|
q = (payload[0] & 0x01) != 0; /* has payload description */
|
|
l = (payload[1] & 0x80) != 0; /* has packet specific information description */
|
|
d = (payload[2] & 0x80) != 0; /* don't cache info for payload id */
|
|
/* id used for caching info */
|
|
rtpxqtdepay->current_id = ((payload[2] & 0x7f) << 8) | payload[3];
|
|
|
|
GST_LOG_OBJECT (rtpxqtdepay,
|
|
"VER: %d, PCK: %d, S: %d, Q: %d, L: %d, D: %d, ID: %d", ver, pck, s, q,
|
|
l, d, rtpxqtdepay->current_id);
|
|
|
|
if (rtpxqtdepay->need_resync) {
|
|
/* we need to find the boundary of a new packet after a DISCONT */
|
|
if (pck != 3 || q) {
|
|
/* non-fragmented packet or payload description present, packet starts
|
|
* here. */
|
|
rtpxqtdepay->need_resync = FALSE;
|
|
} else {
|
|
/* fragmented packet without description */
|
|
if (m) {
|
|
/* marker bit set, next packet is start of new one */
|
|
rtpxqtdepay->need_resync = FALSE;
|
|
}
|
|
goto need_resync;
|
|
}
|
|
}
|
|
|
|
payload += 4;
|
|
payload_len -= 4;
|
|
|
|
if (q) {
|
|
gboolean k, f, a, z;
|
|
guint pdlen, pdpadded;
|
|
gint padding;
|
|
/* media_type only used for printing */
|
|
guint32 G_GNUC_UNUSED media_type;
|
|
guint32 timescale;
|
|
|
|
/* 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* |K|F|A|Z| RES | QuickTime Payload Desc Length |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . QuickTime Payload Desc Data ... .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
if (payload_len <= 4)
|
|
goto wrong_length;
|
|
|
|
k = (payload[0] & 0x80) != 0; /* keyframe */
|
|
f = (payload[0] & 0x40) != 0; /* sparse */
|
|
a = (payload[0] & 0x20) != 0; /* start of payload */
|
|
z = (payload[0] & 0x10) != 0; /* end of payload */
|
|
pdlen = (payload[2] << 8) | payload[3];
|
|
|
|
if (pdlen < 12)
|
|
goto wrong_length;
|
|
|
|
/* calc padding */
|
|
pdpadded = pdlen + 3;
|
|
pdpadded -= pdpadded % 4;
|
|
if (payload_len < pdpadded)
|
|
goto wrong_length;
|
|
|
|
padding = pdpadded - pdlen;
|
|
GST_LOG_OBJECT (rtpxqtdepay,
|
|
"K: %d, F: %d, A: %d, Z: %d, len: %d, padding %d", k, f, a, z, pdlen,
|
|
padding);
|
|
|
|
payload += 4;
|
|
payload_len -= 4;
|
|
/* 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | QuickTime Media Type |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Timescale |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . QuickTime TLVs ... .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
media_type =
|
|
(payload[0] << 24) | (payload[1] << 16) | (payload[2] << 8) |
|
|
payload[3];
|
|
timescale =
|
|
(payload[4] << 24) | (payload[5] << 16) | (payload[6] << 8) |
|
|
payload[7];
|
|
|
|
GST_LOG_OBJECT (rtpxqtdepay, "media_type: %c%c%c%c, timescale %u",
|
|
payload[0], payload[1], payload[2], payload[3], timescale);
|
|
|
|
payload += 8;
|
|
payload_len -= 8;
|
|
pdlen -= 12;
|
|
|
|
/* parse TLV (type-length-value triplets */
|
|
while (pdlen > 3) {
|
|
guint16 tlv_len, tlv_type;
|
|
|
|
/* 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | QuickTime TLV Length | QuickTime TLV Type |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . QuickTime TLV Value ... .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
tlv_len = (payload[0] << 8) | payload[1];
|
|
tlv_type = (payload[2] << 8) | payload[3];
|
|
pdlen -= 4;
|
|
if (tlv_len > pdlen)
|
|
goto wrong_length;
|
|
|
|
GST_LOG_OBJECT (rtpxqtdepay, "TLV '%c%c', len %d", payload[2],
|
|
payload[3], tlv_len);
|
|
|
|
payload += 4;
|
|
payload_len -= 4;
|
|
|
|
switch (tlv_type) {
|
|
case TLV_sd:
|
|
/* Session description */
|
|
if (!gst_rtp_quicktime_parse_sd (rtpxqtdepay, payload, tlv_len))
|
|
goto unknown_format;
|
|
rtpxqtdepay->have_sd = TRUE;
|
|
break;
|
|
case TLV_qt:
|
|
case TLV_ti:
|
|
case TLV_ly:
|
|
case TLV_vo:
|
|
case TLV_mx:
|
|
case TLV_tr:
|
|
case TLV_tw:
|
|
case TLV_th:
|
|
case TLV_la:
|
|
case TLV_rt:
|
|
case TLV_gm:
|
|
case TLV_oc:
|
|
case TLV_cr:
|
|
case TLV_du:
|
|
case TLV_po:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
pdlen -= tlv_len;
|
|
payload += tlv_len;
|
|
payload_len -= tlv_len;
|
|
}
|
|
payload += padding;
|
|
payload_len -= padding;
|
|
}
|
|
|
|
if (l) {
|
|
guint ssilen, ssipadded;
|
|
gint padding;
|
|
|
|
/* 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | RES | Sample-Specific Info Length |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . QuickTime TLVs ...
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
if (payload_len <= 4)
|
|
goto wrong_length;
|
|
|
|
ssilen = (payload[2] << 8) | payload[3];
|
|
if (ssilen < 4)
|
|
goto wrong_length;
|
|
|
|
/* calc padding */
|
|
ssipadded = ssilen + 3;
|
|
ssipadded -= ssipadded % 4;
|
|
if (payload_len < ssipadded)
|
|
goto wrong_length;
|
|
|
|
padding = ssipadded - ssilen;
|
|
GST_LOG_OBJECT (rtpxqtdepay, "len: %d, padding %d", ssilen, padding);
|
|
|
|
payload += 4;
|
|
payload_len -= 4;
|
|
ssilen -= 4;
|
|
|
|
/* parse TLV (type-length-value triplets */
|
|
while (ssilen > 3) {
|
|
guint16 tlv_len, tlv_type;
|
|
|
|
/* 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | QuickTime TLV Length | QuickTime TLV Type |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . QuickTime TLV Value ... .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
tlv_len = (payload[0] << 8) | payload[1];
|
|
tlv_type = (payload[2] << 8) | payload[3];
|
|
ssilen -= 4;
|
|
if (tlv_len > ssilen)
|
|
goto wrong_length;
|
|
|
|
GST_LOG_OBJECT (rtpxqtdepay, "TLV '%c%c', len %d", payload[2],
|
|
payload[3], tlv_len);
|
|
|
|
payload += 4;
|
|
payload_len -= 4;
|
|
|
|
switch (tlv_type) {
|
|
case TLV_sd:
|
|
case TLV_qt:
|
|
case TLV_ti:
|
|
case TLV_ly:
|
|
case TLV_vo:
|
|
case TLV_mx:
|
|
case TLV_tr:
|
|
case TLV_tw:
|
|
case TLV_th:
|
|
case TLV_la:
|
|
case TLV_rt:
|
|
case TLV_gm:
|
|
case TLV_oc:
|
|
case TLV_cr:
|
|
case TLV_du:
|
|
case TLV_po:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ssilen -= tlv_len;
|
|
payload += tlv_len;
|
|
payload_len -= tlv_len;
|
|
}
|
|
payload += padding;
|
|
payload_len -= padding;
|
|
}
|
|
|
|
rtpxqtdepay->previous_id = rtpxqtdepay->current_id;
|
|
|
|
switch (pck) {
|
|
case 1:
|
|
{
|
|
/* multiple samples per packet. */
|
|
outbuf = gst_buffer_new_and_alloc (payload_len);
|
|
gst_buffer_fill (outbuf, 0, payload, payload_len);
|
|
|
|
goto done;
|
|
}
|
|
case 2:
|
|
{
|
|
guint slen;
|
|
|
|
/* multiple samples per packet.
|
|
* 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* |S| Reserved | Sample Length |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Sample Timestamp |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . Sample Data ... .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* |S| Reserved | Sample Length |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Sample Timestamp |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . Sample Data ... .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* . ...... .
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
while (payload_len > 8) {
|
|
s = (payload[0] & 0x80) != 0; /* contains sync sample */
|
|
slen = (payload[2] << 8) | payload[3];
|
|
/* timestamp =
|
|
* (payload[4] << 24) | (payload[5] << 16) | (payload[6] << 8) |
|
|
* payload[7];
|
|
*/
|
|
|
|
payload += 8;
|
|
payload_len -= 8;
|
|
|
|
if (slen > payload_len)
|
|
slen = payload_len;
|
|
|
|
outbuf = gst_buffer_new_and_alloc (slen);
|
|
gst_buffer_fill (outbuf, 0, payload, slen);
|
|
if (!s)
|
|
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
|
|
gst_rtp_base_depayload_push (depayload, outbuf);
|
|
|
|
/* aligned on 32 bit boundary */
|
|
slen = GST_ROUND_UP_4 (slen);
|
|
|
|
payload += slen;
|
|
payload_len -= slen;
|
|
}
|
|
break;
|
|
}
|
|
case 3:
|
|
{
|
|
/* one sample per packet, use adapter to combine based on marker bit. */
|
|
outbuf = gst_buffer_new_and_alloc (payload_len);
|
|
gst_buffer_fill (outbuf, 0, payload, payload_len);
|
|
|
|
gst_adapter_push (rtpxqtdepay->adapter, outbuf);
|
|
outbuf = NULL;
|
|
|
|
if (!m)
|
|
goto done;
|
|
|
|
avail = gst_adapter_available (rtpxqtdepay->adapter);
|
|
outbuf = gst_adapter_take_buffer (rtpxqtdepay->adapter, avail);
|
|
|
|
GST_DEBUG_OBJECT (rtpxqtdepay,
|
|
"gst_rtp_xqt_depay_chain: pushing buffer of size %u", avail);
|
|
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
|
|
done:
|
|
gst_rtp_buffer_unmap (&rtp);
|
|
return outbuf;
|
|
|
|
need_resync:
|
|
{
|
|
GST_DEBUG_OBJECT (rtpxqtdepay, "waiting for marker");
|
|
goto done;
|
|
}
|
|
wrong_version:
|
|
{
|
|
GST_ELEMENT_WARNING (rtpxqtdepay, STREAM, DECODE,
|
|
("Unknown payload version."), (NULL));
|
|
goto done;
|
|
}
|
|
pck_reserved:
|
|
{
|
|
GST_ELEMENT_WARNING (rtpxqtdepay, STREAM, DECODE,
|
|
("PCK reserved 0."), (NULL));
|
|
goto done;
|
|
}
|
|
wrong_length:
|
|
{
|
|
GST_ELEMENT_WARNING (rtpxqtdepay, STREAM, DECODE,
|
|
("Wrong payload length."), (NULL));
|
|
goto done;
|
|
}
|
|
unknown_format:
|
|
{
|
|
GST_ELEMENT_WARNING (rtpxqtdepay, STREAM, DECODE,
|
|
("Unknown payload format."), (NULL));
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_rtp_xqt_depay_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstRtpXQTDepay *rtpxqtdepay;
|
|
GstStateChangeReturn ret;
|
|
|
|
rtpxqtdepay = GST_RTP_XQT_DEPAY (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_adapter_clear (rtpxqtdepay->adapter);
|
|
rtpxqtdepay->previous_id = -1;
|
|
rtpxqtdepay->current_id = -1;
|
|
rtpxqtdepay->need_resync = TRUE;
|
|
rtpxqtdepay->have_sd = FALSE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_adapter_clear (rtpxqtdepay->adapter);
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|