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Diffstat (limited to 'gst/realmedia/gstrdtbuffer.h')
| -rw-r--r-- | gst/realmedia/gstrdtbuffer.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/gst/realmedia/gstrdtbuffer.h b/gst/realmedia/gstrdtbuffer.h new file mode 100644 index 0000000..1ff9c93 --- /dev/null +++ b/gst/realmedia/gstrdtbuffer.h @@ -0,0 +1,122 @@ +/* GStreamer + * Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.com> + * + * gstrdtbuffer.h: various helper functions to manipulate buffers + * with RDT 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_RDTBUFFER_H__ +#define __GST_RDTBUFFER_H__ + +#include <gst/gst.h> + +G_BEGIN_DECLS + +/** + * GstRDTType: + * @GST_RDT_TYPE_INVALID: + * @GST_RDT_TYPE_ASMACTION: + * @GST_RDT_TYPE_ACK: + * @GST_RDT_TYPE_RTTREQ: + * @GST_RDT_TYPE_RTTRESP: + * @GST_RDT_TYPE_CONGESTION: + * @GST_RDT_TYPE_STREAMEND: + * @GST_RDT_TYPE_LATENCY: + * @GST_RDT_TYPE_INFOREQ: + * @GST_RDT_TYPE_INFORESP: + * @GST_RDT_TYPE_AUTOBW: + * + * Different RDT packet types. + */ +typedef enum +{ + GST_RDT_TYPE_INVALID = 0xffff, + GST_RDT_TYPE_ASMACTION = 0xff00, + GST_RDT_TYPE_BWREPORT = 0xff01, + GST_RDT_TYPE_ACK = 0xff02, + GST_RDT_TYPE_RTTREQ = 0xff03, + GST_RDT_TYPE_RTTRESP = 0xff04, + GST_RDT_TYPE_CONGESTION = 0xff05, + GST_RDT_TYPE_STREAMEND = 0xff06, + GST_RDT_TYPE_REPORT = 0xff07, + GST_RDT_TYPE_LATENCY = 0xff08, + GST_RDT_TYPE_INFOREQ = 0xff09, + GST_RDT_TYPE_INFORESP = 0xff0a, + GST_RDT_TYPE_AUTOBW = 0xff0b +} GstRDTType; + +/** + * GST_RDT_IS_DATA_TYPE: + * @t: the #GstRDTType to check + * + * Check if @t is a data packet type. + */ +#define GST_RDT_IS_DATA_TYPE(t) ((t) < 0xff00) + +typedef struct _GstRDTPacket GstRDTPacket; + +/** + * GstRDTPacket: + * @buffer: pointer to RDT buffer + * @offset: offset of packet in buffer data + * + * Data structure that points to a packet at @offset in @buffer. + * The size of the structure is made public to allow stack allocations. + */ +struct _GstRDTPacket +{ + GstBuffer *buffer; + guint offset; + + /*< private >*/ + GstRDTType type; /* type of current packet */ + guint16 length; /* length of current packet in bytes */ + GstMapInfo map; /* last mapped data */ +}; + +/* validate buffers */ +gboolean gst_rdt_buffer_validate_data (guint8 *data, guint len); +gboolean gst_rdt_buffer_validate (GstBuffer *buffer); + +/* retrieving packets */ +guint gst_rdt_buffer_get_packet_count (GstBuffer *buffer); +gboolean gst_rdt_buffer_get_first_packet (GstBuffer *buffer, GstRDTPacket *packet); +gboolean gst_rdt_packet_move_to_next (GstRDTPacket *packet); + +/* working with packets */ +GstRDTType gst_rdt_packet_get_type (GstRDTPacket *packet); +guint16 gst_rdt_packet_get_length (GstRDTPacket *packet); +GstBuffer* gst_rdt_packet_to_buffer (GstRDTPacket *packet); + + +/* data packets */ +guint16 gst_rdt_packet_data_get_seq (GstRDTPacket *packet); +guint8 * gst_rdt_packet_data_map (GstRDTPacket *packet, guint *size); +gboolean gst_rdt_packet_data_unmap (GstRDTPacket *packet); +guint16 gst_rdt_packet_data_get_stream_id (GstRDTPacket *packet); +guint32 gst_rdt_packet_data_get_timestamp (GstRDTPacket *packet); + +guint8 gst_rdt_packet_data_get_flags (GstRDTPacket * packet); + +/* utils */ +gint gst_rdt_buffer_compare_seqnum (guint16 seqnum1, guint16 seqnum2); + +G_END_DECLS + +#endif /* __GST_RDTBUFFER_H__ */ + |