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gstreamer/gst-libs/gst/rtsp/gstrtspmessage.h
Sebastian Dröge b3c0d8b89b rtsp-message: Add support for storing GstBuffers directly as body payload of messages 
This makes it unnecessary for callers to first merge together all
memories, and it allows API like GstRTSPConnection to write them out
without first copying all memories together or using writev()-style API
to write multiple memories out in one go.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/issues/370
2019-01-29 14:17:23 +02:00

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/* GStreamer
* Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.com>
*
* 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.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __GST_RTSP_MESSAGE_H__
#define __GST_RTSP_MESSAGE_H__
#include <gst/gst.h>
#include <gst/rtsp/gstrtspdefs.h>
G_BEGIN_DECLS
/**
* GstRTSPMsgType:
* @GST_RTSP_MESSAGE_INVALID: invalid message type
* @GST_RTSP_MESSAGE_REQUEST: RTSP request message
* @GST_RTSP_MESSAGE_RESPONSE: RTSP response message
* @GST_RTSP_MESSAGE_HTTP_REQUEST: HTTP request message.
* @GST_RTSP_MESSAGE_HTTP_RESPONSE: HTTP response message.
* @GST_RTSP_MESSAGE_DATA: data message
*
* The type of a message.
*/
typedef enum
{
GST_RTSP_MESSAGE_INVALID,
GST_RTSP_MESSAGE_REQUEST,
GST_RTSP_MESSAGE_RESPONSE,
GST_RTSP_MESSAGE_HTTP_REQUEST,
GST_RTSP_MESSAGE_HTTP_RESPONSE,
GST_RTSP_MESSAGE_DATA
} GstRTSPMsgType;
typedef struct _GstRTSPMessage GstRTSPMessage;
/**
* GstRTSPMessage:
* @type: the message type
*
* An RTSP message containing request, response or data messages. Depending on
* the @type, the appropriate structure may be accessed.
*/
struct _GstRTSPMessage
{
GstRTSPMsgType type;
union {
struct {
GstRTSPMethod method;
gchar *uri;
GstRTSPVersion version;
} request;
struct {
GstRTSPStatusCode code;
gchar *reason;
GstRTSPVersion version;
} response;
struct {
guint8 channel;
} data;
} type_data;
/*< private >*/
GArray *hdr_fields;
guint8 *body;
guint body_size;
GstBuffer *body_buffer;
gpointer _gst_reserved[GST_PADDING-1];
};
GST_RTSP_API
GType gst_rtsp_msg_get_type (void);
#define GST_TYPE_RTSP_MESSAGE (gst_rtsp_msg_get_type())
#define GST_RTSP_MESSAGE_CAST(object) ((GstRTSPMessage *)(object))
#define GST_RTSP_MESSAGE(object) (GST_RTSP_MESSAGE_CAST(object))
/* memory management */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_new (GstRTSPMessage **msg);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_init (GstRTSPMessage *msg);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_unset (GstRTSPMessage *msg);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_free (GstRTSPMessage *msg);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_copy (const GstRTSPMessage *msg,
GstRTSPMessage **copy);
GST_RTSP_API
GstRTSPMsgType gst_rtsp_message_get_type (GstRTSPMessage *msg);
/* request */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_new_request (GstRTSPMessage **msg,
GstRTSPMethod method,
const gchar *uri);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_init_request (GstRTSPMessage *msg,
GstRTSPMethod method,
const gchar *uri);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_parse_request (GstRTSPMessage *msg,
GstRTSPMethod *method,
const gchar **uri,
GstRTSPVersion *version);
/* response */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_new_response (GstRTSPMessage **msg,
GstRTSPStatusCode code,
const gchar *reason,
const GstRTSPMessage *request);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_init_response (GstRTSPMessage *msg,
GstRTSPStatusCode code,
const gchar *reason,
const GstRTSPMessage *request);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_parse_response (GstRTSPMessage *msg,
GstRTSPStatusCode *code,
const gchar **reason,
GstRTSPVersion *version);
/* data */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_new_data (GstRTSPMessage **msg,
guint8 channel);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_init_data (GstRTSPMessage *msg,
guint8 channel);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_parse_data (GstRTSPMessage *msg,
guint8 *channel);
/* headers */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_add_header (GstRTSPMessage *msg,
GstRTSPHeaderField field,
const gchar *value);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_take_header (GstRTSPMessage *msg,
GstRTSPHeaderField field,
gchar *value);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_remove_header (GstRTSPMessage *msg,
GstRTSPHeaderField field,
gint indx);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_get_header (const GstRTSPMessage *msg,
GstRTSPHeaderField field,
gchar **value,
gint indx);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_add_header_by_name (GstRTSPMessage * msg,
const gchar * header,
const gchar * value);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_take_header_by_name (GstRTSPMessage * msg,
const gchar * header,
gchar * value);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_remove_header_by_name (GstRTSPMessage * msg,
const gchar * header,
gint index);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_get_header_by_name (GstRTSPMessage * msg,
const gchar * header,
gchar ** value,
gint index);
/* header serialization */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_append_headers (const GstRTSPMessage *msg,
GString *str);
/* handling the body */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_set_body (GstRTSPMessage *msg,
const guint8 *data,
guint size);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_take_body (GstRTSPMessage *msg,
guint8 *data,
guint size);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_get_body (const GstRTSPMessage *msg,
guint8 **data,
guint *size);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_steal_body (GstRTSPMessage *msg,
guint8 **data,
guint *size);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_set_body_buffer (GstRTSPMessage *msg,
GstBuffer * buffer);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_take_body_buffer(GstRTSPMessage *msg,
GstBuffer * buffer);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_get_body_buffer (const GstRTSPMessage *msg,
GstBuffer ** buffer);
GST_RTSP_API
GstRTSPResult gst_rtsp_message_steal_body_buffer(GstRTSPMessage *msg,
GstBuffer ** buffer);
GST_RTSP_API
gboolean gst_rtsp_message_has_body_buffer(const GstRTSPMessage *msg);
typedef struct _GstRTSPAuthCredential GstRTSPAuthCredential;
typedef struct _GstRTSPAuthParam GstRTSPAuthParam;
/**
* GstRTSPAuthCredential:
* @scheme: a #GstRTSPAuthMethod
* @params: A NULL-terminated array of #GstRTSPAuthParam
* @authorization: The authorization for the basic schem
*
* RTSP Authentication credentials
*/
struct _GstRTSPAuthCredential {
GstRTSPAuthMethod scheme;
/* For Basic/Digest WWW-Authenticate and Digest
* Authorization */
GstRTSPAuthParam **params; /* NULL terminated */
/* For Basic Authorization */
gchar *authorization;
};
/**
* GstRTSPAuthParam:
* @name: The name of the parameter
* @value: The value of the parameter
*
* RTSP Authentication parameter
*/
struct _GstRTSPAuthParam {
gchar *name;
gchar *value;
};
GST_RTSP_API
GstRTSPAuthParam * gst_rtsp_auth_param_copy (GstRTSPAuthParam * param);
GST_RTSP_API
void gst_rtsp_auth_param_free (GstRTSPAuthParam * param);
GST_RTSP_API
GstRTSPAuthCredential ** gst_rtsp_message_parse_auth_credentials (GstRTSPMessage * msg, GstRTSPHeaderField field);
GST_RTSP_API
void gst_rtsp_auth_credentials_free (GstRTSPAuthCredential ** credentials);
#define GST_TYPE_RTSP_AUTH_CREDENTIAL gst_rtsp_auth_credential_get_type()
GST_RTSP_API
GType gst_rtsp_auth_credential_get_type (void);
#define GST_TYPE_RTSP_AUTH_PARAM gst_rtsp_auth_param_get_type()
GST_RTSP_API
GType gst_rtsp_auth_param_get_type (void);
/* debug */
GST_RTSP_API
GstRTSPResult gst_rtsp_message_dump (GstRTSPMessage *msg);
G_END_DECLS
#endif /* __GST_RTSP_MESSAGE_H__ */
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