mpv/stream/freesdp/common.c

227 lines
7.2 KiB
C

/*
This file is part of FreeSDP
Copyright (C) 2001,2002,2003 Federico Montesino Pouzols <fedemp@suidzer0.org>
FreeSDP is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* @file common.c
*
* @short Implementation of routines common to parse and formatting
* modules .
*
* This file implements the routines that operate over data structures
* that are used in both the parse and formatting modules.
**/
#include "priv.h"
#include "common.h"
static void
safe_free (void *ptr)
{
if (ptr)
free (ptr);
}
fsdp_description_t *
fsdp_description_new (void)
{
fsdp_description_t *result = malloc (sizeof (fsdp_description_t));
result->version = 0;
result->o_username = result->o_session_id =
result->o_announcement_version = NULL;
result->o_network_type = FSDP_NETWORK_TYPE_UNDEFINED;
result->o_address_type = FSDP_ADDRESS_TYPE_UNDEFINED;
result->o_address = NULL;
result->s_name = NULL;
result->i_information = NULL;
result->u_uri = NULL;
result->emails = NULL;
result->emails_count = 0;
result->phones = NULL;
result->phones_count = 0;
/* At first, there is no session-level definition for these
parameters */
result->c_network_type = FSDP_NETWORK_TYPE_UNDEFINED;
result->c_address_type = FSDP_ADDRESS_TYPE_UNDEFINED;
result->c_address.address = NULL;
/* there is no session-level definition for these parameters */
result->bw_modifiers = NULL;
result->bw_modifiers_count = 0;
result->time_periods = NULL;
result->time_periods_count = 0;
result->timezone_adj = NULL;
result->k_encryption_method = FSDP_ENCRYPTION_METHOD_UNDEFINED;
result->k_encryption_content = NULL;
/* Default/undefined values for attributes */
result->a_category = result->a_keywords = result->a_tool = NULL;
result->a_type = FSDP_SESSION_TYPE_UNDEFINED;
result->a_sendrecv_mode = FSDP_SENDRECV_UNDEFINED;
result->a_charset = NULL;
result->a_sdplangs = result->a_langs = NULL;
result->a_controls = NULL;
result->a_range = NULL;
result->a_rtpmaps = NULL;
result->a_rtpmaps_count = 0;
result->a_sdplangs_count = 0;
result->a_langs_count = 0;
result->a_controls_count = 0;
result->unidentified_attributes = NULL;
result->unidentified_attributes_count = 0;
result->media_announcements = NULL;
result->media_announcements_count = 0;
return result;
}
void
fsdp_description_delete (fsdp_description_t * dsc)
{
fsdp_description_recycle (dsc);
safe_free (dsc);
}
void
fsdp_description_recycle (fsdp_description_t * dsc)
{
/* Recursively free all strings and arrays */
unsigned int i, j;
if (!dsc)
return;
safe_free (dsc->o_username);
safe_free (dsc->o_session_id);
safe_free (dsc->o_announcement_version);
safe_free (dsc->o_address);
safe_free (dsc->s_name);
safe_free (dsc->i_information);
safe_free (dsc->u_uri);
for (i = 0; i < dsc->emails_count; i++)
safe_free ((char *) dsc->emails[i]);
safe_free (dsc->emails);
for (i = 0; i < dsc->phones_count; i++)
safe_free ((char *) dsc->phones[i]);
safe_free (dsc->phones);
safe_free (dsc->c_address.address);
for (i = 0; i < dsc->bw_modifiers_count; i++)
safe_free (dsc->bw_modifiers[i].b_unknown_bw_modt);
safe_free (dsc->bw_modifiers);
for (i = 0; i < dsc->time_periods_count; i++)
{
for (j = 0; j < dsc->time_periods[i]->repeats_count; j++)
{
safe_free (dsc->time_periods[i]->repeats[j]->offsets);
safe_free (dsc->time_periods[i]->repeats[j]);
}
safe_free (dsc->time_periods[i]->repeats);
safe_free (dsc->time_periods[i]);
}
safe_free (dsc->time_periods);
safe_free (dsc->timezone_adj);
safe_free (dsc->a_category);
safe_free (dsc->a_keywords);
safe_free (dsc->a_tool);
for (i = 0; i < dsc->a_rtpmaps_count; i++)
safe_free (dsc->a_rtpmaps[i]);
safe_free (dsc->a_rtpmaps);
safe_free (dsc->a_charset);
for (i = 0; i < dsc->a_sdplangs_count; i++)
safe_free (dsc->a_sdplangs[i]);
safe_free (dsc->a_sdplangs);
for (i = 0; i < dsc->a_langs_count; i++)
safe_free (dsc->a_langs[i]);
safe_free (dsc->a_langs);
for (i = 0; i < dsc->a_controls_count; i++)
safe_free (dsc->a_controls[i]);
safe_free (dsc->a_controls);
safe_free (dsc->a_range);
for (i = 0; i < dsc->media_announcements_count; i++)
{
for (j = 0; j < dsc->media_announcements[i]->formats_count; j++)
safe_free (dsc->media_announcements[i]->formats[j]);
safe_free (dsc->media_announcements[i]->formats);
safe_free (dsc->media_announcements[i]->i_title);
for (j = 0; j < dsc->media_announcements[i]->bw_modifiers_count; j++)
{
if (FSDP_BW_MOD_TYPE_UNKNOWN ==
dsc->media_announcements[i]->bw_modifiers[j].b_mod_type)
safe_free (dsc->media_announcements[i]->bw_modifiers[j].
b_unknown_bw_modt);
}
safe_free (dsc->media_announcements[i]->bw_modifiers);
safe_free (dsc->media_announcements[i]->k_encryption_content);
for (j = 0; j < dsc->media_announcements[i]->a_rtpmaps_count; j++)
{
safe_free (dsc->media_announcements[i]->a_rtpmaps[j]->pt);
safe_free (dsc->media_announcements[i]->a_rtpmaps[j]->
encoding_name);
safe_free (dsc->media_announcements[i]->a_rtpmaps[j]->parameters);
safe_free (dsc->media_announcements[i]->a_rtpmaps[j]);
}
safe_free (dsc->media_announcements[i]->a_rtpmaps);
for (j = 0; j < dsc->media_announcements[i]->a_sdplangs_count; j++)
safe_free (dsc->media_announcements[i]->a_sdplangs[j]);
safe_free (dsc->media_announcements[i]->a_sdplangs);
for (j = 0; j < dsc->media_announcements[i]->a_langs_count; j++)
safe_free (dsc->media_announcements[i]->a_langs[j]);
safe_free (dsc->media_announcements[i]->a_langs);
for (j = 0; j < dsc->media_announcements[i]->a_controls_count; j++)
safe_free (dsc->media_announcements[i]->a_controls[j]);
safe_free (dsc->media_announcements[i]->a_controls);
for (j = 0; j < dsc->media_announcements[i]->a_fmtps_count; j++)
safe_free (dsc->media_announcements[i]->a_fmtps[j]);
safe_free (dsc->media_announcements[i]->a_fmtps);
for (j = 0;
j < dsc->media_announcements[i]->unidentified_attributes_count; j++)
safe_free (dsc->media_announcements[i]->unidentified_attributes[j]);
safe_free (dsc->media_announcements[i]->unidentified_attributes);
safe_free (dsc->media_announcements[i]);
}
safe_free (dsc->media_announcements);
/* This prevents the user to make the library crash when incorrectly
using recycled but not rebuilt descriptions */
dsc->emails_count = 0;
dsc->phones_count = 0;
dsc->bw_modifiers_count = 0;
dsc->time_periods_count = 0;
dsc->media_announcements_count = 0;
}