/* * camresourcemanager.c - GStreamer CAM (EN50221) Resource Manager * 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 "camresourcemanager.h" #define GST_CAT_DEFAULT cam_debug_cat #define TAG_PROFILE_ENQUIRY 0x9F8010 #define TAG_PROFILE_REPLY 0x9F8011 #define TAG_PROFILE_CHANGE 0x9F8012 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); CamResourceManager * cam_resource_manager_new (void) { CamALApplication *application; CamResourceManager *mgr; mgr = g_new0 (CamResourceManager, 1); application = CAM_AL_APPLICATION (mgr); _cam_al_application_init (application); application->resource_id = CAM_AL_RESOURCE_MANAGER_ID; application->session_request = session_request_impl; application->open = open_impl; application->close = close_impl; application->data = data_impl; return mgr; } void cam_resource_manager_destroy (CamResourceManager * mgr) { _cam_al_application_destroy (CAM_AL_APPLICATION (mgr)); g_free (mgr); } static CamReturn session_request_impl (CamALApplication * application, CamSLSession * session, CamSLResourceStatus * status) { *status = CAM_SL_RESOURCE_STATUS_OPEN; return CAM_RETURN_OK; } static CamReturn send_simple (CamResourceManager * mgr, CamSLSession * session, guint tag) { guint8 *buffer; guint offset; guint buffer_size; CamReturn ret; cam_al_calc_buffer_size (CAM_AL_APPLICATION (mgr)->al, 0, &buffer_size, &offset); buffer = g_malloc (buffer_size); ret = cam_al_application_write (CAM_AL_APPLICATION (mgr), session, tag, buffer, buffer_size, 0); g_free (buffer); return ret; } static CamReturn send_profile_enquiry (CamResourceManager * mgr, CamSLSession * session) { GST_DEBUG ("sending profile enquiry"); return send_simple (mgr, session, TAG_PROFILE_ENQUIRY); } static CamReturn send_profile_change (CamResourceManager * mgr, CamSLSession * session) { GST_DEBUG ("sending profile change"); return send_simple (mgr, session, TAG_PROFILE_CHANGE); } static CamReturn send_profile_reply (CamResourceManager * mgr, CamSLSession * session) { CamReturn ret; guint8 *buffer; guint8 *apdu_body; guint buffer_size; guint offset; GList *resource_ids; guint resource_ids_size; GList *walk; resource_ids = cam_al_get_resource_ids (CAM_AL_APPLICATION (mgr)->al); resource_ids_size = g_list_length (resource_ids) * 4; cam_al_calc_buffer_size (CAM_AL_APPLICATION (mgr)->al, resource_ids_size, &buffer_size, &offset); buffer = g_malloc (buffer_size); apdu_body = buffer + offset; for (walk = resource_ids; walk != NULL; walk = walk->next) { GST_WRITE_UINT32_BE (apdu_body, GPOINTER_TO_UINT (walk->data)); apdu_body += 4; } g_list_free (resource_ids); GST_DEBUG ("sending profile reply"); ret = cam_al_application_write (CAM_AL_APPLICATION (mgr), session, TAG_PROFILE_REPLY, buffer, buffer_size, resource_ids_size); g_free (buffer); return ret; } static CamReturn open_impl (CamALApplication * application, CamSLSession * session) { CamResourceManager *mgr = CAM_RESOURCE_MANAGER (application); return send_profile_enquiry (mgr, session); } static CamReturn close_impl (CamALApplication * application, CamSLSession * session) { return CAM_RETURN_OK; } static CamReturn handle_profile_reply (CamResourceManager * mgr, CamSLSession * session, guint8 * buffer, guint length) { /* the APDU contains length / 4 resource_ids */ /* FIXME: implement this once CamApplicationProxy is implemented */ GST_DEBUG ("got profile reply"); return send_profile_change (mgr, session); } static CamReturn data_impl (CamALApplication * application, CamSLSession * session, guint tag, guint8 * buffer, guint length) { CamResourceManager *mgr = CAM_RESOURCE_MANAGER (application); switch (tag) { case TAG_PROFILE_ENQUIRY: send_profile_reply (mgr, session); break; case TAG_PROFILE_REPLY: handle_profile_reply (mgr, session, buffer, length); break; case TAG_PROFILE_CHANGE: send_profile_enquiry (mgr, session); break; default: g_return_val_if_reached (CAM_RETURN_APPLICATION_ERROR); } /* FIXME: Shouldn't this return the retval from the functions above ? */ return CAM_RETURN_OK; }