mirror of
https://github.com/mpv-player/mpv
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49867bd432
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19277 b3059339-0415-0410-9bf9-f77b7e298cf2
353 lines
11 KiB
C
353 lines
11 KiB
C
/*
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This file is part of FreeSDP.
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Copyright (C) 2001,2002,2003 Federico Montesino Pouzols <fedemp@altern.org>
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FreeSDP is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file common.h
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* @ingroup common
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* @short Public header common for both parsing and formatting modules.
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**/
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#ifndef FSDP_COMMON_H
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#define FSDP_COMMON_H
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/* Macros to avoid name mangling when compiling with a C++ compiler */
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#ifdef __cplusplus
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# define BEGIN_C_DECLS extern "C" {
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# define END_C_DECLS }
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#else /* !__cplusplus */
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# define BEGIN_C_DECLS
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# define END_C_DECLS
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#endif /* __cplusplus */
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#include <sys/time.h>
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#include <time.h>
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BEGIN_C_DECLS
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/**
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* @defgroup common FreeSDP Common Facilities
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*
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* Data types and routines common for both parsing and formatting
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* modules.
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**/
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/** @addtogroup common */
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/*@{*/
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/**
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* @enum fsdp_error_t freesdp/common.h
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* @short Error codes in the FreeSDP library.
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*
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* There is a FSDPE_MISSING_XXXX for each mandatory line, as
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* FSDPE_MISSING_OWNER. This kind of error is reported when a
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* mandatory description line, such as the owner line, is not found
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* where it should be in the SDP description. There are also several
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* error codes like FSDPE_INVALID_XXXX. These are returned when there
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* is a recognized line in the parsed description that violates the
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* SDP syntax or gives wrong parameters, for instance "c=foo bar",
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* which would cause a FSDPE_INVALID_CONNECTION error code to be
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* returned.
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**/
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typedef enum
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{
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FSDPE_OK = 0,
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FSDPE_ILLEGAL_CHARACTER, /**< Misplaced '\r', '\n' or '\0' */
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FSDPE_MISSING_VERSION, /**< The first line is not like
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v=... */
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FSDPE_INVALID_VERSION, /**< Parse error in version line,
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perhaps, the version specified in
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v=... is not valid for FreeSDP */
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FSDPE_MISSING_OWNER, /**< No owner line found in its
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place */
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FSDPE_INVALID_OWNER, /**< Parse error in owner line */
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FSDPE_MISSING_NAME, /**< No session name found in its
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place */
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FSDPE_EMPTY_NAME, /**< Empty session name line */
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FSDPE_INVALID_CONNECTION, /**< Syntax error in connection
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line */
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FSDPE_INVALID_CONNECTION_ADDRTYPE, /**< Unrecognized address type in
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connection line */
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FSDPE_INVALID_CONNECTION_NETTYPE, /**< Unrecognized network type in
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connection line */
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FSDPE_INVALID_BANDWIDTH, /**< Parse error in bandwidth
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line */
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FSDPE_MISSING_TIME, /**< No time period has been given
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for the session */
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FSDPE_INVALID_TIME, /**< Parse error in time line */
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FSDPE_INVALID_REPEAT, /**< Parse error in repeat time
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line */
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FSDPE_INVALID_TIMEZONE, /**< Parse error in timezone line */
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FSDPE_INVALID_ENCRYPTION_METHOD, /**< Unknown encryption method */
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FSDPE_INVALID_ATTRIBUTE, /**< Syntax error in an attribute
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line */
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FSDPE_INVALID_ATTRIBUTE_RTPMAP,/**< Parse error in a=rtpmap:... line */
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FSDPE_INVALID_SESSION_TYPE, /**< An unknown session type has been
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specified in a `type:'
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session-level attribute */
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FSDPE_INVALID_MEDIA, /**< Parse error in media line */
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FSDPE_UNKNOWN_MEDIA_TYPE, /**< Unknown media type in media
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line */
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FSDPE_UNKNOWN_MEDIA_TRANSPORT, /**< A media transport has been
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specified that is unknown */
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FSDPE_OVERFILLED, /**< extra unknown lines are at the
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end of the description */
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FSDPE_INVALID_LINE, /**< a line unknown to FreeSDP has been
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found */
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FSDPE_MISSING_CONNECTION_INFO, /**< No connection information has
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been provided for the whole
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session nor one or more media */
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FSDPE_INVALID_INDEX,
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/* FSDPE_MAXSIZE, description does not fit requested maximun size */
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FSDPE_INTERNAL_ERROR,
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FSDPE_INVALID_PARAMETER, /**< Some parameter of the called
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FreeSDP routine has been given an
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invalid value. This includes
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cases such as NULL pointers. */
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FSDPE_BUFFER_OVERFLOW
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} fsdp_error_t;
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/**
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* @short Type of network
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*
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* Initially, SDP defines "Internet". New network types may be
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* registered with IANA. However, the number of types is expected to
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* be small and rarely extended. In addition, every new network type
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* requires at least one new address type.
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**/
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typedef enum
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{
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FSDP_NETWORK_TYPE_UNDEFINED, /**< Not provided */
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FSDP_NETWORK_TYPE_INET /**< Internet */
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} fsdp_network_type_t;
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/**
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* @short Type of address
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*
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* Initially, IPv4 and IPv6 are defined for the network type
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* Internet. New address types may be registered with IANA.
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**/
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typedef enum
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{
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FSDP_ADDRESS_TYPE_UNDEFINED, /**< Not provided */
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FSDP_ADDRESS_TYPE_IPV4, /**< IP version 4 */
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FSDP_ADDRESS_TYPE_IPV6 /**< IP version 6 */
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} fsdp_address_type_t;
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/**
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* @short Type of bandwith modifiers
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*
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* Bandwidth modifiers specify the meaning of the bandwidth
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* value. Initially "Conference Total" and "Application Specific" are
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* defined. Both use kilobits as bandwidth unit. "Conference Total"
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* specifies that the bandwidth value is a proposed upper limit to the
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* session bandwidth. "Application Specific" specifies thath the
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* bandwidth value is the application concept of maximum bandwidth.
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**/
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typedef enum
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{
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FSDP_BW_MOD_TYPE_UNDEFINED, /**< Not provided */
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FSDP_BW_MOD_TYPE_UNKNOWN, /**< Unknown bandwidth
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modifier (FreeSDP
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ignores it) */
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FSDP_BW_MOD_TYPE_CONFERENCE_TOTAL, /**< "CT - Conference Total" */
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FSDP_BW_MOD_TYPE_APPLICATION_SPECIFIC, /**< "AS - Application specific" */
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FSDP_BW_MOD_TYPE_RTCP_SENDERS, /**< "RS - RTCP bandwidth for
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senders */
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FSDP_BW_MOD_TYPE_RTCP_RECEIVERS, /**< "RR - RTCP bandwidth for
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receivers */
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} fsdp_bw_modifier_type_t;
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/**
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* @short encryption method
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*
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* The encryption method specifies the way to get the encryption key.
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**/
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typedef enum
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{
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FSDP_ENCRYPTION_METHOD_UNDEFINED, /**< Not provided */
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FSDP_ENCRYPTION_METHOD_CLEAR, /**< The key field is the
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untransformed key */
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FSDP_ENCRYPTION_METHOD_BASE64, /**< The key is base64
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encoded */
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FSDP_ENCRYPTION_METHOD_URI, /**< The key value provided is
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a URI pointing to the actual
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key */
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FSDP_ENCRYPTION_METHOD_PROMPT /**< The key is not provided
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but should be got prompting
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the user */
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} fsdp_encryption_method_t;
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/**
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* @short Advised reception/transmission mode
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*
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* Depending on wheter sendrecv, recvonly, sendonly or inactive
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* attribute is given, the tools used to participate in the session
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* should be started in the corresponding transmission
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* mode. FSDP_SENDRECV_SENDRECV is the default for sessions which are
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* not of the conference type broadcast or H332.
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**/
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typedef enum
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{
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FSDP_SENDRECV_UNDEFINED, /**< Not specified */
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FSDP_SENDRECV_SENDRECV, /**< Send and receive */
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FSDP_SENDRECV_RECVONLY, /**< Receive only */
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FSDP_SENDRECV_SENDONLY, /**< Send only */
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FSDP_SENDRECV_INACTIVE /**< Do not send nor receive */
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} fsdp_sendrecv_mode_t;
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/**
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* @short Values for `orient' media attribute.
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*
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* Normally used with whiteboard media, this attribute specifies the
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* orientation of the whiteboard.
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**/
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typedef enum
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{
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FSDP_ORIENT_UNDEFINED, /**< Not specified */
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FSDP_ORIENT_PORTRAIT, /**< Portrait */
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FSDP_ORIENT_LANDSCAPE, /**< Landscape */
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FSDP_ORIENT_SEASCAPE /**< Upside down landscape */
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} fsdp_orient_t;
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/**
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* @short Type of the conference
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*
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* The following types are initially defined: broadcast, meeting,
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* moderated, test and H332.
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**/
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typedef enum
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{
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FSDP_SESSION_TYPE_UNDEFINED, /**< Not specified */
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FSDP_SESSION_TYPE_BROADCAST, /**< Broadcast session */
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FSDP_SESSION_TYPE_MEETING, /**< Meeting session */
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FSDP_SESSION_TYPE_MODERATED, /**< Moderated session */
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FSDP_SESSION_TYPE_TEST, /**< Test (do not display) */
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FSDP_SESSION_TYPE_H332 /**< H332 session */
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} fsdp_session_type_t;
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/**
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* @short Media type
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*
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* The following types are defined initially: audio, video,
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* application, data and control.
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**/
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typedef enum
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{
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FSDP_MEDIA_UNDEFINED, /**< Not specified */
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FSDP_MEDIA_VIDEO, /**< Video */
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FSDP_MEDIA_AUDIO, /**< Audio */
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FSDP_MEDIA_APPLICATION, /**< Application, such as whiteboard */
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FSDP_MEDIA_DATA, /**< bulk data */
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FSDP_MEDIA_CONTROL /**< Control channel */
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} fsdp_media_t;
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/**
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* @short Transport protocol
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*
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* The transport protocol used depends on the address type. Initially,
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* RTP over UDP Audio/Video Profile, and UDP are defined.
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*
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**/
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typedef enum
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{
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FSDP_TP_UNDEFINED, /**< Not specified */
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FSDP_TP_RTP_AVP, /**< RTP Audio/Video Profile */
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FSDP_TP_UDP, /**< UDP */
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FSDP_TP_TCP, /**< TCP */
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FSDP_TP_UDPTL, /**< ITU-T T.38*/
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FSDP_TP_VAT, /**< old vat protocol (historic)*/
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FSDP_TP_OLD_RTP, /**< old rtp protocols (historic)*/
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FSDP_TP_H320 /**< TODO: add to the parser */
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} fsdp_transport_protocol_t;
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/**
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* Session-level attributes whose value is specified as a character
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* string in FreeSDP. These values are usually given to
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* fsdp_get_strn_att() in order to get the corresponding value.
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*
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**/
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typedef enum
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{
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FSDP_SESSION_STR_ATT_CATEGORY,
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FSDP_SESSION_STR_ATT_KEYWORDS,
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FSDP_SESSION_STR_ATT_TOOL,
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FSDP_SESSION_STR_ATT_CHARSET,
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} fsdp_session_str_att_t;
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/**
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* @short FreeSDP SDP description media object.
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*
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* Object for media specific information in SDP descriptions. Each SDP
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* description may include any number of media section. A
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* fsdp_media_description_t object encapsulates the information in a
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* media section, such as video, audio or whiteboard.
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**/
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typedef struct fsdp_media_description_t_s fsdp_media_description_t;
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/**
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* @short FreeSDP SDP session description object.
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*
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* Contains all the information extracted from a textual SDP
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* description, including all the media announcements.
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**/
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typedef struct fsdp_description_t_s fsdp_description_t;
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/**
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* Allocates memory and initializes values for a new
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* fsdp_description_t object. If you call this routine, do not forget
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* about <code>fsdp_description_delete()</code>
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*
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* @return new fsdp_description_t object
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**/
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fsdp_description_t *fsdp_description_new (void);
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/**
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* Destroys a fsdp_description_t object.
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*
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* @param dsc pointer to the fsdp_description_t object to delete.
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**/
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void fsdp_description_delete (fsdp_description_t * dsc);
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/**
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* Calling this function over a description is equivalent to calling
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* fsdp_description_delete and then fsdp_description_delete. This
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* function is however more suitable and efficient for description
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* processing loops.
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*
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* @param dsc pointer to the fsdp_description_t object to
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* renew/recycle.
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**/
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void fsdp_description_recycle (fsdp_description_t * dsc);
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/**
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* * Returns a string correspondent to the error number.
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* *
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* * @param err_no error number.
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* **/
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const char *fsdp_strerror (fsdp_error_t err_no);
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/*@}*//* closes addtogroup common */
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END_C_DECLS
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#endif /* FSDP_COMMON_H */
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