1 files changed, 153 insertions, 0 deletions
diff --git a/sys/dvb/camapplicationinfo.c b/sys/dvb/camapplicationinfo.c
new file mode 100644
index 00000000..63a885a1
--- /dev/null
+++ b/sys/dvb/camapplicationinfo.c
@@ -0,0 +1,153 @@
+/*
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, 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 ()
+{
+  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)
+{
+  guint8 type;
+  guint8 menu_length;
+  gchar menu[255];
+
+  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);
+
+  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;
+}