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/*
* camapplicationinfo.h - CAM (EN50221) Application Info resource
* Copyright (C) 2007 Alessandro Decina
*
* Authors:
* Alessandro Decina <alessandro@nnva.org>
*
* 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.
*/
#include <string.h>
#include "camapplicationinfo.h"
#define GST_CAT_DEFAULT cam_debug_cat
#define TAG_APPLICATION_INFO_ENQUIRY 0x9F8020
#define TAG_APPLICATION_INFO_REPLY 0x9F8021
#define TAG_APPLICATION_INFO_ENTER_MENU 0x9F8022
static CamReturn session_request_impl (CamALApplication * application,
CamSLSession * session, CamSLResourceStatus * status);
static CamReturn open_impl (CamALApplication * application,
CamSLSession * session);
static CamReturn close_impl (CamALApplication * application,
CamSLSession * session);
static CamReturn data_impl (CamALApplication * application,
CamSLSession * session, guint tag, guint8 * buffer, guint length);
CamApplicationInfo *
cam_application_info_new (void)
{
CamApplicationInfo *info;
CamALApplication *application;
info = g_new0 (CamApplicationInfo, 1);
application = CAM_AL_APPLICATION (info);
_cam_al_application_init (application);
application->resource_id = CAM_AL_APPLICATION_INFO_ID;
application->session_request = session_request_impl;
application->open = open_impl;
application->close = close_impl;
application->data = data_impl;
return info;
}
void
cam_application_info_destroy (CamApplicationInfo * info)
{
_cam_al_application_destroy (CAM_AL_APPLICATION (info));
g_free (info);
}
static CamReturn
send_simple (CamApplicationInfo * info, CamSLSession * session, guint tag)
{
guint8 *buffer;
guint offset;
guint buffer_size;
CamReturn ret;
cam_al_calc_buffer_size (CAM_AL_APPLICATION (info)->al, 0, &buffer_size,
&offset);
buffer = g_malloc (buffer_size);
ret = cam_al_application_write (CAM_AL_APPLICATION (info), session,
tag, buffer, buffer_size, 0);
g_free (buffer);
return ret;
}
static CamReturn
send_application_info_enquiry (CamApplicationInfo * info,
CamSLSession * session)
{
GST_DEBUG ("sending application info enquiry");
return send_simple (info, session, TAG_APPLICATION_INFO_ENQUIRY);
}
static CamReturn
session_request_impl (CamALApplication * application,
CamSLSession * session, CamSLResourceStatus * status)
{
*status = CAM_SL_RESOURCE_STATUS_OPEN;
return CAM_RETURN_OK;
}
static CamReturn
open_impl (CamALApplication * application, CamSLSession * session)
{
CamApplicationInfo *info = CAM_APPLICATION_INFO (application);
return send_application_info_enquiry (info, session);
}
static CamReturn
close_impl (CamALApplication * application, CamSLSession * session)
{
return CAM_RETURN_OK;
}
static CamReturn
handle_application_info_reply (CamApplicationInfo * info,
CamSLSession * session, guint8 * buffer, guint length)
{
#ifndef GST_DISABLE_GST_DEBUG
guint8 type;
guint8 menu_length;
gchar menu[256];
type = buffer[0];
menu_length = buffer[5];
menu_length = MIN (menu_length, 255);
memcpy (menu, buffer + 6, menu_length);
menu[menu_length] = 0;
GST_INFO ("application info reply, type: %d, menu: %s", type, menu);
#endif
return CAM_RETURN_OK;
}
static CamReturn
data_impl (CamALApplication * application, CamSLSession * session,
guint tag, guint8 * buffer, guint length)
{
CamReturn ret;
CamApplicationInfo *info = CAM_APPLICATION_INFO (application);
switch (tag) {
case TAG_APPLICATION_INFO_REPLY:
ret = handle_application_info_reply (info, session, buffer, length);
break;
default:
g_return_val_if_reached (CAM_RETURN_ERROR);
}
return ret;
}
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