mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-03 16:09:39 +00:00
687 lines
21 KiB
C
687 lines
21 KiB
C
/* GStreamer
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* Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* based on http://developer.apple.com/quicktime/icefloe/dispatch026.html
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gst/rtp/gstrtpbuffer.h>
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#include <string.h>
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#include "gstrtpxqtdepay.h"
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#define MAKE_TLV(a,b) (((a)<<8)|(b))
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#define TLV_sd MAKE_TLV ('s','d')
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#define TLV_qt MAKE_TLV ('q','t')
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#define TLV_ti MAKE_TLV ('t','i')
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#define TLV_ly MAKE_TLV ('l','y')
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#define TLV_vo MAKE_TLV ('v','o')
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#define TLV_mx MAKE_TLV ('m','x')
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#define TLV_tr MAKE_TLV ('t','r')
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#define TLV_tw MAKE_TLV ('t','w')
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#define TLV_th MAKE_TLV ('t','h')
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#define TLV_la MAKE_TLV ('l','a')
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#define TLV_rt MAKE_TLV ('r','t')
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#define TLV_gm MAKE_TLV ('g','m')
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#define TLV_oc MAKE_TLV ('o','c')
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#define TLV_cr MAKE_TLV ('c','r')
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#define TLV_du MAKE_TLV ('d','u')
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#define TLV_po MAKE_TLV ('p','o')
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#define QT_UINT32(a) (GST_READ_UINT32_BE(a))
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#define QT_UINT24(a) (GST_READ_UINT32_BE(a) >> 8)
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#define QT_UINT16(a) (GST_READ_UINT16_BE(a))
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#define QT_UINT8(a) (GST_READ_UINT8(a))
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#define QT_FP32(a) ((GST_READ_UINT32_BE(a))/65536.0)
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#define QT_FP16(a) ((GST_READ_UINT16_BE(a))/256.0)
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#define QT_FOURCC(a) (GST_READ_UINT32_LE(a))
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#define QT_UINT64(a) ((((guint64)QT_UINT32(a))<<32)|QT_UINT32(((guint8 *)a)+4))
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#define FOURCC_avc1 GST_MAKE_FOURCC('a','v','c','1')
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#define FOURCC_avc3 GST_MAKE_FOURCC('a','v','c','3')
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#define FOURCC_avcC GST_MAKE_FOURCC('a','v','c','C')
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GST_DEBUG_CATEGORY_STATIC (rtpxqtdepay_debug);
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#define GST_CAT_DEFAULT (rtpxqtdepay_debug)
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/* RtpXQTDepay signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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};
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static GstStaticPadTemplate gst_rtp_xqt_depay_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate gst_rtp_xqt_depay_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-rtp, "
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"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
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"media = (string) { \"audio\", \"video\" }, clock-rate = (int) [1, MAX], "
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"encoding-name = (string) { \"X-QT\", \"X-QUICKTIME\" }")
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);
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#define gst_rtp_xqt_depay_parent_class parent_class
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G_DEFINE_TYPE (GstRtpXQTDepay, gst_rtp_xqt_depay, GST_TYPE_RTP_BASE_DEPAYLOAD);
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static void gst_rtp_xqt_depay_finalize (GObject * object);
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static gboolean gst_rtp_xqt_depay_setcaps (GstRTPBaseDepayload * depayload,
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GstCaps * caps);
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static GstBuffer *gst_rtp_xqt_depay_process (GstRTPBaseDepayload * depayload,
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GstBuffer * buf);
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static GstStateChangeReturn gst_rtp_xqt_depay_change_state (GstElement *
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element, GstStateChange transition);
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static void
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gst_rtp_xqt_depay_class_init (GstRtpXQTDepayClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_rtp_xqt_depay_finalize;
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gstelement_class->change_state = gst_rtp_xqt_depay_change_state;
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gstrtpbasedepayload_class->set_caps = gst_rtp_xqt_depay_setcaps;
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gstrtpbasedepayload_class->process = gst_rtp_xqt_depay_process;
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GST_DEBUG_CATEGORY_INIT (rtpxqtdepay_debug, "rtpxqtdepay", 0,
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"QT Media RTP Depayloader");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_rtp_xqt_depay_src_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_rtp_xqt_depay_sink_template));
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gst_element_class_set_static_metadata (gstelement_class,
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"RTP packet depayloader", "Codec/Depayloader/Network",
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"Extracts Quicktime audio/video from RTP packets",
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"Wim Taymans <wim@fluendo.com>");
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}
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static void
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gst_rtp_xqt_depay_init (GstRtpXQTDepay * rtpxqtdepay)
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{
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rtpxqtdepay->adapter = gst_adapter_new ();
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}
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static void
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gst_rtp_xqt_depay_finalize (GObject * object)
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{
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GstRtpXQTDepay *rtpxqtdepay;
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rtpxqtdepay = GST_RTP_XQT_DEPAY (object);
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g_object_unref (rtpxqtdepay->adapter);
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rtpxqtdepay->adapter = NULL;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_rtp_quicktime_parse_sd (GstRtpXQTDepay * rtpxqtdepay, guint8 * data,
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guint data_len)
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{
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gint len;
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guint32 fourcc;
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if (data_len < 8)
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goto too_short;
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len = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];
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if (len > data_len)
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goto too_short;
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fourcc = QT_FOURCC (data + 4);
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GST_DEBUG_OBJECT (rtpxqtdepay, "parsing %" GST_FOURCC_FORMAT,
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GST_FOURCC_ARGS (fourcc));
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switch (fourcc) {
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case FOURCC_avc1:
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case FOURCC_avc3:
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{
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guint32 chlen;
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if (len < 0x56)
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goto too_short;
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len -= 0x56;
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data += 0x56;
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/* find avcC */
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while (len >= 8) {
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chlen = QT_UINT32 (data);
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fourcc = QT_FOURCC (data + 4);
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if (fourcc == FOURCC_avcC) {
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GstBuffer *buf;
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gint size;
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GstCaps *caps;
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GST_DEBUG_OBJECT (rtpxqtdepay, "found avcC codec_data in sd, %u",
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chlen);
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/* parse, if found */
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if (chlen < len)
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size = chlen - 8;
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else
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size = len - 8;
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buf = gst_buffer_new_and_alloc (size);
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gst_buffer_fill (buf, 0, data + 8, size);
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caps = gst_caps_new_simple ("video/x-h264",
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"codec_data", GST_TYPE_BUFFER, buf, NULL);
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gst_buffer_unref (buf);
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gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD (rtpxqtdepay)->srcpad, caps);
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gst_caps_unref (caps);
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break;
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}
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len -= chlen;
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data += chlen;
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}
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break;
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}
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default:
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break;
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}
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return TRUE;
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/* ERRORS */
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too_short:
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{
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return FALSE;
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}
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}
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static gboolean
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gst_rtp_xqt_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
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{
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GstStructure *structure;
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gint clock_rate = 90000; /* default */
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_get_int (structure, "clock-rate", &clock_rate);
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depayload->clock_rate = clock_rate;
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return TRUE;
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}
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static GstBuffer *
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gst_rtp_xqt_depay_process (GstRTPBaseDepayload * depayload, GstBuffer * buf)
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{
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GstRtpXQTDepay *rtpxqtdepay;
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GstBuffer *outbuf = NULL;
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gboolean m;
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GstRTPBuffer rtp = { NULL };
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rtpxqtdepay = GST_RTP_XQT_DEPAY (depayload);
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gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp);
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if (GST_BUFFER_IS_DISCONT (buf)) {
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/* discont, clear adapter and try to find a new packet start */
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gst_adapter_clear (rtpxqtdepay->adapter);
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rtpxqtdepay->need_resync = TRUE;
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GST_DEBUG_OBJECT (rtpxqtdepay, "we need resync");
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}
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m = gst_rtp_buffer_get_marker (&rtp);
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GST_LOG_OBJECT (rtpxqtdepay, "marker: %d", m);
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{
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gint payload_len;
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guint avail;
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guint8 *payload;
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guint8 ver, pck;
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gboolean s, q, l, d;
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payload_len = gst_rtp_buffer_get_payload_len (&rtp);
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payload = gst_rtp_buffer_get_payload (&rtp);
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/* 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | VER |PCK|S|Q|L| RES |D| QuickTime Payload ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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if (payload_len <= 4)
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goto wrong_length;
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ver = (payload[0] & 0xf0) >> 4;
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if (ver > 1)
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goto wrong_version;
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pck = (payload[0] & 0x0c) >> 2;
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if (pck == 0)
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goto pck_reserved;
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s = (payload[0] & 0x02) != 0; /* contains sync sample */
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q = (payload[0] & 0x01) != 0; /* has payload description */
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l = (payload[1] & 0x80) != 0; /* has packet specific information description */
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d = (payload[2] & 0x80) != 0; /* don't cache info for payload id */
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/* id used for caching info */
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rtpxqtdepay->current_id = ((payload[2] & 0x7f) << 8) | payload[3];
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GST_LOG_OBJECT (rtpxqtdepay,
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"VER: %d, PCK: %d, S: %d, Q: %d, L: %d, D: %d, ID: %d", ver, pck, s, q,
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l, d, rtpxqtdepay->current_id);
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if (rtpxqtdepay->need_resync) {
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/* we need to find the boundary of a new packet after a DISCONT */
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if (pck != 3 || q) {
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/* non-fragmented packet or payload description present, packet starts
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* here. */
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rtpxqtdepay->need_resync = FALSE;
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} else {
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/* fragmented packet without description */
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if (m) {
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/* marker bit set, next packet is start of new one */
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rtpxqtdepay->need_resync = FALSE;
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}
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goto need_resync;
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}
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}
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payload += 4;
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payload_len -= 4;
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if (q) {
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gboolean k, f, a, z;
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guint pdlen, pdpadded;
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gint padding;
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/* media_type only used for printing */
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guint32 G_GNUC_UNUSED media_type;
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guint32 timescale;
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/* 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |K|F|A|Z| RES | QuickTime Payload Desc Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* . QuickTime Payload Desc Data ... .
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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if (payload_len <= 4)
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goto wrong_length;
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k = (payload[0] & 0x80) != 0; /* keyframe */
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f = (payload[0] & 0x40) != 0; /* sparse */
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a = (payload[0] & 0x20) != 0; /* start of payload */
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z = (payload[0] & 0x10) != 0; /* end of payload */
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pdlen = (payload[2] << 8) | payload[3];
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if (pdlen < 12)
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goto wrong_length;
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/* calc padding */
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pdpadded = pdlen + 3;
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pdpadded -= pdpadded % 4;
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if (payload_len < pdpadded)
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goto wrong_length;
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padding = pdpadded - pdlen;
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GST_LOG_OBJECT (rtpxqtdepay,
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"K: %d, F: %d, A: %d, Z: %d, len: %d, padding %d", k, f, a, z, pdlen,
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padding);
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payload += 4;
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payload_len -= 4;
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/* 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | QuickTime Media Type |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Timescale |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* . QuickTime TLVs ... .
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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media_type =
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(payload[0] << 24) | (payload[1] << 16) | (payload[2] << 8) |
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payload[3];
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timescale =
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(payload[4] << 24) | (payload[5] << 16) | (payload[6] << 8) |
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payload[7];
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GST_LOG_OBJECT (rtpxqtdepay, "media_type: %c%c%c%c, timescale %u",
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payload[0], payload[1], payload[2], payload[3], timescale);
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payload += 8;
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payload_len -= 8;
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pdlen -= 12;
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/* parse TLV (type-length-value triplets */
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while (pdlen > 3) {
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guint16 tlv_len, tlv_type;
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/* 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | QuickTime TLV Length | QuickTime TLV Type |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* . QuickTime TLV Value ... .
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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tlv_len = (payload[0] << 8) | payload[1];
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tlv_type = (payload[2] << 8) | payload[3];
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pdlen -= 4;
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if (tlv_len > pdlen)
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goto wrong_length;
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GST_LOG_OBJECT (rtpxqtdepay, "TLV '%c%c', len %d", payload[2],
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payload[3], tlv_len);
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payload += 4;
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payload_len -= 4;
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switch (tlv_type) {
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case TLV_sd:
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/* Session description */
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if (!gst_rtp_quicktime_parse_sd (rtpxqtdepay, payload, tlv_len))
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goto unknown_format;
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rtpxqtdepay->have_sd = TRUE;
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break;
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case TLV_qt:
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case TLV_ti:
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case TLV_ly:
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case TLV_vo:
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case TLV_mx:
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case TLV_tr:
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case TLV_tw:
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case TLV_th:
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case TLV_la:
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case TLV_rt:
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case TLV_gm:
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case TLV_oc:
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case TLV_cr:
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case TLV_du:
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case TLV_po:
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default:
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break;
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}
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pdlen -= tlv_len;
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payload += tlv_len;
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payload_len -= tlv_len;
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}
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payload += padding;
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payload_len -= padding;
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}
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if (l) {
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guint ssilen, ssipadded;
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gint padding;
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/* 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | RES | Sample-Specific Info Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* . QuickTime TLVs ...
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
|
|
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;
|
|
}
|