| /* GStreamer | |
| * Copyright (C) <2005> Philippe Khalaf <burger@speedy.org> | |
| * <2005> Wim Taymans <wim@fluendo.com> | |
| * | |
| * gstrtpbuffer.h: various helper functions to manipulate buffers | |
| * with RTP payload. | |
| * | |
| * 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. | |
| */ | |
| #ifndef __GST_RTPBUFFER_H__ | |
| #define __GST_RTPBUFFER_H__ | |
| #include <gst/gst.h> | |
| #include <gst/rtp/gstrtppayloads.h> | |
| G_BEGIN_DECLS | |
| /** | |
| * GST_RTP_VERSION: | |
| * | |
| * The supported RTP version 2. | |
| */ | |
| #define GST_RTP_VERSION 2 | |
| typedef struct _GstRTPBuffer GstRTPBuffer; | |
| /** | |
| * GstRTPBuffer: | |
| * @buffer: pointer to RTP buffer | |
| * @state: internal state | |
| * @data: array of data | |
| * @size: array of size | |
| * @map: array of #GstMapInfo | |
| * | |
| * Data structure that points to an RTP packet. | |
| * The size of the structure is made public to allow stack allocations. | |
| */ | |
| struct _GstRTPBuffer | |
| { | |
| GstBuffer *buffer; | |
| guint state; | |
| gpointer data[4]; | |
| gsize size[4]; | |
| GstMapInfo map[4]; | |
| }; | |
| #define GST_RTP_BUFFER_INIT { NULL, 0, { NULL, NULL, NULL, NULL}, { 0, 0, 0, 0 }, \ | |
| { GST_MAP_INFO_INIT, GST_MAP_INFO_INIT, GST_MAP_INFO_INIT, GST_MAP_INFO_INIT} } | |
| /* creating buffers */ | |
| GST_RTP_API | |
| void gst_rtp_buffer_allocate_data (GstBuffer *buffer, guint payload_len, | |
| guint8 pad_len, guint8 csrc_count); | |
| GST_RTP_API | |
| GstBuffer* gst_rtp_buffer_new_take_data (gpointer data, gsize len); | |
| GST_RTP_API | |
| GstBuffer* gst_rtp_buffer_new_copy_data (gconstpointer data, gsize len); | |
| GST_RTP_API | |
| GstBuffer* gst_rtp_buffer_new_allocate (guint payload_len, guint8 pad_len, guint8 csrc_count); | |
| GST_RTP_API | |
| GstBuffer* gst_rtp_buffer_new_allocate_len (guint packet_len, guint8 pad_len, guint8 csrc_count); | |
| GST_RTP_API | |
| guint gst_rtp_buffer_calc_header_len (guint8 csrc_count); | |
| GST_RTP_API | |
| guint gst_rtp_buffer_calc_packet_len (guint payload_len, guint8 pad_len, guint8 csrc_count); | |
| GST_RTP_API | |
| guint gst_rtp_buffer_calc_payload_len (guint packet_len, guint8 pad_len, guint8 csrc_count); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_map (GstBuffer *buffer, GstMapFlags flags, GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_unmap (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_packet_len (GstRTPBuffer *rtp, guint len); | |
| GST_RTP_API | |
| guint gst_rtp_buffer_get_packet_len (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| guint gst_rtp_buffer_get_header_len (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| guint8 gst_rtp_buffer_get_version (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_version (GstRTPBuffer *rtp, guint8 version); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_get_padding (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_padding (GstRTPBuffer *rtp, gboolean padding); | |
| GST_RTP_API | |
| void gst_rtp_buffer_pad_to (GstRTPBuffer *rtp, guint len); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_get_extension (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_extension (GstRTPBuffer *rtp, gboolean extension); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_get_extension_data (GstRTPBuffer *rtp, guint16 *bits, | |
| gpointer *data, guint *wordlen); | |
| GST_RTP_API | |
| GBytes* gst_rtp_buffer_get_extension_bytes (GstRTPBuffer *rtp, guint16 *bits); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_set_extension_data (GstRTPBuffer *rtp, guint16 bits, guint16 length); | |
| GST_RTP_API | |
| void gst_rtp_buffer_remove_extension_data (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| guint32 gst_rtp_buffer_get_ssrc (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_ssrc (GstRTPBuffer *rtp, guint32 ssrc); | |
| GST_RTP_API | |
| guint8 gst_rtp_buffer_get_csrc_count (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| guint32 gst_rtp_buffer_get_csrc (GstRTPBuffer *rtp, guint8 idx); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_csrc (GstRTPBuffer *rtp, guint8 idx, guint32 csrc); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_get_marker (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_marker (GstRTPBuffer *rtp, gboolean marker); | |
| GST_RTP_API | |
| guint8 gst_rtp_buffer_get_payload_type (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_payload_type (GstRTPBuffer *rtp, guint8 payload_type); | |
| GST_RTP_API | |
| guint16 gst_rtp_buffer_get_seq (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_seq (GstRTPBuffer *rtp, guint16 seq); | |
| GST_RTP_API | |
| guint32 gst_rtp_buffer_get_timestamp (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| void gst_rtp_buffer_set_timestamp (GstRTPBuffer *rtp, guint32 timestamp); | |
| GST_RTP_API | |
| GstBuffer* gst_rtp_buffer_get_payload_buffer (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| GstBuffer* gst_rtp_buffer_get_payload_subbuffer (GstRTPBuffer *rtp, guint offset, guint len); | |
| GST_RTP_API | |
| guint gst_rtp_buffer_get_payload_len (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| gpointer gst_rtp_buffer_get_payload (GstRTPBuffer *rtp); | |
| GST_RTP_API | |
| GBytes* gst_rtp_buffer_get_payload_bytes (GstRTPBuffer *rtp); | |
| /* some helpers */ | |
| GST_RTP_API | |
| guint32 gst_rtp_buffer_default_clock_rate (guint8 payload_type); | |
| GST_RTP_API | |
| gint gst_rtp_buffer_compare_seqnum (guint16 seqnum1, guint16 seqnum2); | |
| GST_RTP_API | |
| guint64 gst_rtp_buffer_ext_timestamp (guint64 *exttimestamp, guint32 timestamp); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_get_extension_onebyte_header (GstRTPBuffer *rtp, | |
| guint8 id, | |
| guint nth, | |
| gpointer * data, | |
| guint * size); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_get_extension_twobytes_header (GstRTPBuffer *rtp, | |
| guint8 * appbits, | |
| guint8 id, | |
| guint nth, | |
| gpointer * data, | |
| guint * size); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_add_extension_onebyte_header (GstRTPBuffer *rtp, | |
| guint8 id, | |
| gconstpointer data, | |
| guint size); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_add_extension_twobytes_header (GstRTPBuffer *rtp, | |
| guint8 appbits, | |
| guint8 id, | |
| gconstpointer data, | |
| guint size); | |
| GST_RTP_API | |
| gboolean gst_rtp_buffer_get_extension_onebyte_header_from_bytes (GBytes * bytes, | |
| guint16 bit_pattern, | |
| guint8 id, | |
| guint nth, | |
| gpointer * data, | |
| guint * size); | |
| /** | |
| * GstRTPBufferFlags: | |
| * @GST_RTP_BUFFER_FLAG_RETRANSMISSION: The #GstBuffer was once wrapped | |
| * in a retransmitted packet as specified by RFC 4588. | |
| * @GST_RTP_BUFFER_FLAG_REDUNDANT: The packet represents redundant RTP packet. | |
| * The flag is used in gstrtpstorage to be able to hold the packetback | |
| * and use it only for recovery from packet loss. | |
| * Since: 1.14 | |
| * @GST_RTP_BUFFER_FLAG_LAST: Offset to define more flags. | |
| * | |
| * Additional RTP buffer flags. These flags can potentially be used on any | |
| * buffers carrying RTP packets. | |
| * | |
| * Note that these are only valid for #GstCaps of type: application/x-rtp (x-rtcp). | |
| * They can conflict with other extended buffer flags. | |
| * | |
| * Since: 1.10 | |
| */ | |
| typedef enum { | |
| GST_RTP_BUFFER_FLAG_RETRANSMISSION = (GST_BUFFER_FLAG_LAST << 0), | |
| GST_RTP_BUFFER_FLAG_REDUNDANT = (GST_BUFFER_FLAG_LAST << 1), | |
| GST_RTP_BUFFER_FLAG_LAST = (GST_BUFFER_FLAG_LAST << 8) | |
| } GstRTPBufferFlags; | |
| /** | |
| * GstRTPBufferMapFlags: | |
| * @GST_RTP_BUFFER_MAP_FLAG_SKIP_PADDING: Skip mapping and validation of RTP | |
| * padding and RTP pad count when present. Useful for buffers where | |
| * the padding may be encrypted. | |
| * @GST_RTP_BUFFER_MAP_FLAG_LAST: Offset to define more flags | |
| * | |
| * Additional mapping flags for gst_rtp_buffer_map(). | |
| * | |
| * Since: 1.6.1 | |
| */ | |
| typedef enum { | |
| GST_RTP_BUFFER_MAP_FLAG_SKIP_PADDING = (GST_MAP_FLAG_LAST << 0), | |
| GST_RTP_BUFFER_MAP_FLAG_LAST = (GST_MAP_FLAG_LAST << 8) | |
| /* 8 more flags possible afterwards */ | |
| } GstRTPBufferMapFlags; | |
| G_END_DECLS | |
| #endif /* __GST_RTPBUFFER_H__ */ | |