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363b790d38
We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
276 lines
9.4 KiB
C
276 lines
9.4 KiB
C
/* GStreamer
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* Copyright (C) <2005> Philippe Khalaf <burger@speedy.org>
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* <2005> Wim Taymans <wim@fluendo.com>
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*
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* gstrtpbuffer.h: various helper functions to manipulate buffers
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* with RTP payload.
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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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#ifndef __GST_RTPBUFFER_H__
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#define __GST_RTPBUFFER_H__
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#include <gst/gst.h>
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#include <gst/rtp/gstrtppayloads.h>
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G_BEGIN_DECLS
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/**
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* GST_RTP_VERSION:
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*
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* The supported RTP version 2.
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*/
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#define GST_RTP_VERSION 2
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typedef struct _GstRTPBuffer GstRTPBuffer;
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/**
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* GstRTPBuffer:
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* @buffer: pointer to RTP buffer
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* @state: internal state
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* @data: array of data
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* @size: array of size
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* @map: array of #GstMapInfo
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*
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* Data structure that points to an RTP packet.
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* The size of the structure is made public to allow stack allocations.
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*/
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struct _GstRTPBuffer
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{
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GstBuffer *buffer;
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guint state;
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gpointer data[4];
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gsize size[4];
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GstMapInfo map[4];
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};
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#define GST_RTP_BUFFER_INIT { NULL, 0, { NULL, NULL, NULL, NULL}, { 0, 0, 0, 0 }, \
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{ GST_MAP_INFO_INIT, GST_MAP_INFO_INIT, GST_MAP_INFO_INIT, GST_MAP_INFO_INIT} }
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/* creating buffers */
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GST_RTP_API
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void gst_rtp_buffer_allocate_data (GstBuffer *buffer, guint payload_len,
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guint8 pad_len, guint8 csrc_count);
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GST_RTP_API
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GstBuffer* gst_rtp_buffer_new_take_data (gpointer data, gsize len);
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GST_RTP_API
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GstBuffer* gst_rtp_buffer_new_copy_data (gconstpointer data, gsize len);
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GST_RTP_API
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GstBuffer* gst_rtp_buffer_new_allocate (guint payload_len, guint8 pad_len, guint8 csrc_count);
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GST_RTP_API
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GstBuffer* gst_rtp_buffer_new_allocate_len (guint packet_len, guint8 pad_len, guint8 csrc_count);
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GST_RTP_API
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guint gst_rtp_buffer_calc_header_len (guint8 csrc_count);
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GST_RTP_API
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guint gst_rtp_buffer_calc_packet_len (guint payload_len, guint8 pad_len, guint8 csrc_count);
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GST_RTP_API
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guint gst_rtp_buffer_calc_payload_len (guint packet_len, guint8 pad_len, guint8 csrc_count);
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GST_RTP_API
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gboolean gst_rtp_buffer_map (GstBuffer *buffer, GstMapFlags flags, GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_unmap (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_packet_len (GstRTPBuffer *rtp, guint len);
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GST_RTP_API
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guint gst_rtp_buffer_get_packet_len (GstRTPBuffer *rtp);
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GST_RTP_API
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guint gst_rtp_buffer_get_header_len (GstRTPBuffer *rtp);
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GST_RTP_API
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guint8 gst_rtp_buffer_get_version (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_version (GstRTPBuffer *rtp, guint8 version);
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GST_RTP_API
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gboolean gst_rtp_buffer_get_padding (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_padding (GstRTPBuffer *rtp, gboolean padding);
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GST_RTP_API
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void gst_rtp_buffer_pad_to (GstRTPBuffer *rtp, guint len);
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GST_RTP_API
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gboolean gst_rtp_buffer_get_extension (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_extension (GstRTPBuffer *rtp, gboolean extension);
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GST_RTP_API
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gboolean gst_rtp_buffer_get_extension_data (GstRTPBuffer *rtp, guint16 *bits,
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gpointer *data, guint *wordlen);
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GST_RTP_API
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GBytes* gst_rtp_buffer_get_extension_bytes (GstRTPBuffer *rtp, guint16 *bits);
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GST_RTP_API
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gboolean gst_rtp_buffer_set_extension_data (GstRTPBuffer *rtp, guint16 bits, guint16 length);
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GST_RTP_API
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guint32 gst_rtp_buffer_get_ssrc (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_ssrc (GstRTPBuffer *rtp, guint32 ssrc);
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GST_RTP_API
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guint8 gst_rtp_buffer_get_csrc_count (GstRTPBuffer *rtp);
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GST_RTP_API
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guint32 gst_rtp_buffer_get_csrc (GstRTPBuffer *rtp, guint8 idx);
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GST_RTP_API
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void gst_rtp_buffer_set_csrc (GstRTPBuffer *rtp, guint8 idx, guint32 csrc);
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GST_RTP_API
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gboolean gst_rtp_buffer_get_marker (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_marker (GstRTPBuffer *rtp, gboolean marker);
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GST_RTP_API
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guint8 gst_rtp_buffer_get_payload_type (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_payload_type (GstRTPBuffer *rtp, guint8 payload_type);
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GST_RTP_API
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guint16 gst_rtp_buffer_get_seq (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_seq (GstRTPBuffer *rtp, guint16 seq);
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GST_RTP_API
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guint32 gst_rtp_buffer_get_timestamp (GstRTPBuffer *rtp);
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GST_RTP_API
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void gst_rtp_buffer_set_timestamp (GstRTPBuffer *rtp, guint32 timestamp);
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GST_RTP_API
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GstBuffer* gst_rtp_buffer_get_payload_buffer (GstRTPBuffer *rtp);
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GST_RTP_API
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GstBuffer* gst_rtp_buffer_get_payload_subbuffer (GstRTPBuffer *rtp, guint offset, guint len);
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GST_RTP_API
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guint gst_rtp_buffer_get_payload_len (GstRTPBuffer *rtp);
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GST_RTP_API
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gpointer gst_rtp_buffer_get_payload (GstRTPBuffer *rtp);
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GST_RTP_API
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GBytes* gst_rtp_buffer_get_payload_bytes (GstRTPBuffer *rtp);
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/* some helpers */
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GST_RTP_API
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guint32 gst_rtp_buffer_default_clock_rate (guint8 payload_type);
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GST_RTP_API
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gint gst_rtp_buffer_compare_seqnum (guint16 seqnum1, guint16 seqnum2);
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GST_RTP_API
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guint64 gst_rtp_buffer_ext_timestamp (guint64 *exttimestamp, guint32 timestamp);
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GST_RTP_API
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gboolean gst_rtp_buffer_get_extension_onebyte_header (GstRTPBuffer *rtp,
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guint8 id,
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guint nth,
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gpointer * data,
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guint * size);
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GST_RTP_API
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gboolean gst_rtp_buffer_get_extension_twobytes_header (GstRTPBuffer *rtp,
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guint8 * appbits,
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guint8 id,
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guint nth,
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gpointer * data,
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guint * size);
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GST_RTP_API
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gboolean gst_rtp_buffer_add_extension_onebyte_header (GstRTPBuffer *rtp,
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guint8 id,
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gconstpointer data,
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guint size);
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GST_RTP_API
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gboolean gst_rtp_buffer_add_extension_twobytes_header (GstRTPBuffer *rtp,
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guint8 appbits,
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guint8 id,
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gconstpointer data,
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guint size);
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/**
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* GstRTPBufferFlags:
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* @GST_RTP_BUFFER_FLAG_RETRANSMISSION: The #GstBuffer was once wrapped
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* in a retransmitted packet as specified by RFC 4588.
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* @GST_RTP_BUFFER_FLAG_REDUNDANT: The packet represents redundant RTP packet.
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* The flag is used in gstrtpstorage to be able to hold the packetback
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* and use it only for recovery from packet loss.
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* Since: 1.14
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* @GST_RTP_BUFFER_FLAG_LAST: Offset to define more flags.
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*
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* Additional RTP buffer flags. These flags can potentially be used on any
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* buffers carrying RTP packets.
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*
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* Note that these are only valid for #GstCaps of type: application/x-rtp (x-rtcp).
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* They can conflict with other extended buffer flags.
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*
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* Since: 1.10
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*/
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typedef enum {
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GST_RTP_BUFFER_FLAG_RETRANSMISSION = (GST_BUFFER_FLAG_LAST << 0),
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GST_RTP_BUFFER_FLAG_REDUNDANT = (GST_BUFFER_FLAG_LAST << 1),
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GST_RTP_BUFFER_FLAG_LAST = (GST_BUFFER_FLAG_LAST << 8)
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} GstRTPBufferFlags;
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/**
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* GstRTPBufferMapFlags:
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* @GST_RTP_BUFFER_MAP_FLAG_SKIP_PADDING: Skip mapping and validation of RTP
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* padding and RTP pad count when present. Useful for buffers where
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* the padding may be encrypted.
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* @GST_RTP_BUFFER_MAP_FLAG_LAST: Offset to define more flags
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*
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* Additional mapping flags for gst_rtp_buffer_map().
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*
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* Since: 1.6.1
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*/
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typedef enum {
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GST_RTP_BUFFER_MAP_FLAG_SKIP_PADDING = (GST_MAP_FLAG_LAST << 0),
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GST_RTP_BUFFER_MAP_FLAG_LAST = (GST_MAP_FLAG_LAST << 8)
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/* 8 more flags possible afterwards */
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} GstRTPBufferMapFlags;
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G_END_DECLS
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#endif /* __GST_RTPBUFFER_H__ */
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