sys/dvb/: Add URI Handler for dvb.

Original commit message from CVS:
* sys/dvb/Makefile.am:
* sys/dvb/dvbbasebin.c:
Add URI Handler for dvb.
Re-order pad templates to workaround a bug in playbasebin.
* sys/dvb/parsechannels.c:
* sys/dvb/parsechannels.h:
Add code to parse channels from zap-style channels.conf files.

4 files changed, 405 insertions, 6 deletions

diff --git a/sys/dvb/Makefile.am b/sys/dvb/Makefile.am
index 1bcb099f..9453d446 100644
--- a/sys/dvb/Makefile.am
+++ b/sys/dvb/Makefile.am
@@ -14,7 +14,8 @@ libgstdvb_la_SOURCES = \
 	camapplication.c \
 	camresourcemanager.c \
 	camapplicationinfo.c \
-	camconditionalaccess.c	
+	camconditionalaccess.c \
+	parsechannels.c
 
 libgstdvb_la_CFLAGS = $(GST_CFLAGS)
 libgstdvb_la_LIBADD = $(GST_BASE_LIBS) $(GST_PLUGINS_BASE_LIBS)
@@ -32,5 +33,6 @@ noinst_HEADERS = \
 	camapplication.h \
 	camresourcemanager.h \
 	camapplicationinfo.h \
-	camconditionalaccess.h
+	camconditionalaccess.h \
+	parsechannels.h
 	
diff --git a/sys/dvb/dvbbasebin.c b/sys/dvb/dvbbasebin.c
index 8f633e66..bc13eddb 100644
--- a/sys/dvb/dvbbasebin.c
+++ b/sys/dvb/dvbbasebin.c
@@ -28,6 +28,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include "dvbbasebin.h"
+#include "parsechannels.h"
 
 GST_DEBUG_CATEGORY_STATIC (dvb_base_bin_debug);
 #define GST_CAT_DEFAULT dvb_base_bin_debug
@@ -121,6 +122,21 @@ static GstPad *dvb_base_bin_request_new_pad (GstElement * element,
 static void dvb_base_bin_release_pad (GstElement * element, GstPad * pad);
 static void dvb_base_bin_rebuild_filter (DvbBaseBin * dvbbasebin);
 
+static void dvb_base_bin_uri_handler_init (gpointer g_iface,
+    gpointer iface_data);
+
+static void
+dvb_base_bin_setup_interfaces (GType type)
+{
+  static const GInterfaceInfo urihandler_info = {
+    dvb_base_bin_uri_handler_init,
+    NULL,
+    NULL,
+  };
+
+  g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
+}
+
 static DvbBaseBinStream *
 dvb_base_bin_add_stream (DvbBaseBin * dvbbasebin, guint16 pid)
 {
@@ -174,7 +190,8 @@ dvb_base_bin_get_program (DvbBaseBin * dvbbasebin, gint program_number)
 static guint signals [LAST_SIGNAL] = { 0 };
 */
 
-GST_BOILERPLATE (DvbBaseBin, dvb_base_bin, GstBin, GST_TYPE_BIN);
+GST_BOILERPLATE_FULL (DvbBaseBin, dvb_base_bin, GstBin, GST_TYPE_BIN,
+    dvb_base_bin_setup_interfaces);
 
 static void
 dvb_base_bin_base_init (gpointer klass)
@@ -185,9 +202,9 @@ dvb_base_bin_base_init (gpointer klass)
   element_class->release_pad = dvb_base_bin_release_pad;
 
   gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_template));
-  gst_element_class_add_pad_template (element_class,
       gst_static_pad_template_get (&program_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_template));
 
   gst_element_class_set_details (element_class, &dvb_base_bin_details);
 }
@@ -919,7 +936,6 @@ dvb_base_bin_pad_added_cb (GstElement * mpegtsparse,
   program->ghost = gst_ghost_pad_new (gst_pad_get_name (pad), pad);
   gst_pad_set_active (program->ghost, TRUE);
   gst_element_add_pad (GST_ELEMENT (dvbbasebin), program->ghost);
-
   /* if the program has a pmt, activate it now, otherwise it will get activated
    * when there's a PMT */
   if (!program->active && program->pmt_pid != G_MAXUINT16)
@@ -944,6 +960,59 @@ dvb_base_bin_pad_removed_cb (GstElement * mpegtsparse,
   program->ghost = NULL;
 }
 
+static guint
+dvb_base_bin_uri_get_type (void)
+{
+  return GST_URI_SRC;
+}
+
+static gchar **
+dvb_base_bin_uri_get_protocols (void)
+{
+  static gchar *protocols[] = { "dvb", NULL };
+
+  return protocols;
+}
+
+static const gchar *
+dvb_base_bin_uri_get_uri (GstURIHandler * handler)
+{
+  return "dvb://";
+}
+
+static gboolean
+dvb_base_bin_uri_set_uri (GstURIHandler * handler, const gchar * uri)
+{
+  gboolean ret;
+  gchar *protocol;
+  DvbBaseBin *dvbbasebin = GST_DVB_BASE_BIN (handler);
+
+  protocol = gst_uri_get_protocol (uri);
+
+  if (strcmp (protocol, "dvb") != 0) {
+    ret = FALSE;
+  } else {
+    ret = set_properties_for_channel (G_OBJECT (dvbbasebin),
+        gst_uri_get_location (uri));
+  }
+
+  /* here is where we parse channels.conf */
+  g_free (protocol);
+
+  return ret;
+}
+
+static void
+dvb_base_bin_uri_handler_init (gpointer g_iface, gpointer iface_data)
+{
+  GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
+
+  iface->get_type = dvb_base_bin_uri_get_type;
+  iface->get_protocols = dvb_base_bin_uri_get_protocols;
+  iface->get_uri = dvb_base_bin_uri_get_uri;
+  iface->set_uri = dvb_base_bin_uri_set_uri;
+}
+
 gboolean
 gst_dvb_base_bin_plugin_init (GstPlugin * plugin)
 {
diff --git a/sys/dvb/parsechannels.c b/sys/dvb/parsechannels.c
new file mode 100644
index 00000000..a813d43b
--- /dev/null
+++ b/sys/dvb/parsechannels.c
@@ -0,0 +1,297 @@
+/*
+ * parsechannels.c - 
+ * Copyright (C) 2008 Zaheer Abbas Merali
+ * 
+ * Authors:
+ *   Zaheer Abbas Merali <zaheerabbas at merali dot 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 <glib.h>
+#include <glib-object.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gst/gst.h>
+
+/* this will do zap style channels.conf only for the moment*/
+GHashTable *
+parse_channels_conf_from_file (const gchar * filename)
+{
+  gchar *contents;
+  gchar **lines;
+  gchar *line;
+  gchar **fields;
+  gchar *terrestrial[] = { "inversion", "bandwidth",
+    "code-rate-hp", "code-rate-lp", "modulation", "transmission-mode",
+    "guard", "hierarchy"
+  };
+  gchar *satellite[] = { "polarity", "diseqc-source",
+    "symbol-rate"
+  };
+  int i;
+  GHashTable *res = NULL;
+
+  if (g_file_get_contents (filename, &contents, NULL, NULL)) {
+    lines = g_strsplit (contents, "\n", 0);
+    res = g_hash_table_new (g_str_hash, g_str_equal);
+
+    i = 0;
+    line = lines[0];
+    while (line != NULL) {
+      if (line[0] != '#') {
+        int numfields;
+        gboolean parsed = FALSE;
+        GHashTable *params = g_hash_table_new_full (g_str_hash, g_str_equal,
+            g_free, g_free);
+
+        fields = g_strsplit (line, ":", 0);
+        numfields = g_strv_length (fields);
+        if (numfields == 8) {
+          /* satellite */
+          int j;
+
+          g_hash_table_insert (params, g_strdup ("type"),
+              g_strdup ("satellite"));
+          for (j = 2; j <= 4; j++) {
+            g_hash_table_insert (params, g_strdup (satellite[j - 2]),
+                g_strdup (fields[j]));
+          }
+          g_hash_table_insert (params, g_strdup ("frequency"),
+              g_strdup_printf ("%d", atoi (fields[1]) * 1000));
+          parsed = TRUE;
+        } else if (numfields == 13) {
+          /* terrestrial */
+          int j;
+
+          g_hash_table_insert (params, g_strdup ("type"),
+              g_strdup ("terrestrial"));
+          for (j = 2; j <= 9; j++) {
+            g_hash_table_insert (params, g_strdup (terrestrial[j - 2]),
+                g_strdup (fields[j]));
+          }
+          g_hash_table_insert (params, g_strdup ("frequency"),
+              g_strdup (fields[1]));
+          parsed = TRUE;
+        }
+        if (parsed) {
+          g_hash_table_insert (params, g_strdup ("sid"),
+              g_strdup (fields[numfields - 1]));
+          g_hash_table_insert (res, g_strdup (fields[0]), params);
+        }
+        g_strfreev (fields);
+      }
+      line = lines[++i];
+    }
+    g_strfreev (lines);
+    g_free (contents);
+  }
+  return res;
+}
+
+static gboolean
+remove_channel_from_hash (gpointer key, gpointer value, gpointer user_data)
+{
+  if (key)
+    g_free (key);
+  if (value)
+    g_hash_table_destroy ((GHashTable *) value);
+  return TRUE;
+}
+
+static void
+destroy_channels_hash (GHashTable * channels)
+{
+  g_hash_table_foreach_remove (channels, remove_channel_from_hash, NULL);
+}
+
+gboolean
+set_properties_for_channel (GObject * dvbbasebin, const gchar * channel_name)
+{
+  gboolean ret = FALSE;
+  GHashTable *channels;
+  gchar *filename;
+
+  filename = g_strdup (g_getenv ("GST_DVB_CHANNELS_CONF"));
+  if (filename == NULL) {
+    guint major, minor, micro, nano;
+
+    gst_version (&major, &minor, &micro, &nano);
+    filename = g_strdup_printf ("%s/.gstreamer-%d.%d/dvb-channels.conf",
+        g_get_home_dir (), major, minor);
+  }
+  channels = parse_channels_conf_from_file (filename);
+  g_free (filename);
+
+  if (channels) {
+    GHashTable *params = g_hash_table_lookup (channels,
+        channel_name);
+
+    if (params) {
+      gchar *type;
+      const gchar *adapter;
+
+      g_object_set (dvbbasebin, "program-numbers",
+          g_hash_table_lookup (params, "sid"), NULL);
+      /* check if it is terrestrial or satellite */
+      adapter = g_getenv ("GST_DVB_ADAPTER");
+      if (adapter)
+        g_object_set (dvbbasebin, "adapter", atoi (adapter), NULL);
+      g_object_set (dvbbasebin, "frequency",
+          atoi (g_hash_table_lookup (params, "frequency")), NULL);
+      type = g_hash_table_lookup (params, "type");
+      if (strcmp (type, "terrestrial") == 0) {
+        gchar *val;
+
+        val = g_hash_table_lookup (params, "inversion");
+        if (strcmp (val, "INVERSION_OFF") == 0)
+          g_object_set (dvbbasebin, "inversion", 0, NULL);
+        else if (strcmp (val, "INVERSION_ON") == 0)
+          g_object_set (dvbbasebin, "inversion", 1, NULL);
+        else
+          g_object_set (dvbbasebin, "inversion", 2, NULL);
+
+        val = g_hash_table_lookup (params, "bandwidth");
+        if (strcmp (val, "BANDWIDTH_8_MHZ") == 0)
+          g_object_set (dvbbasebin, "bandwidth", 0, NULL);
+        else if (strcmp (val, "BANDWIDTH_7_MHZ") == 0)
+          g_object_set (dvbbasebin, "bandwidth", 1, NULL);
+        else if (strcmp (val, "BANDWIDTH_6_MHZ") == 0)
+          g_object_set (dvbbasebin, "bandwidth", 2, NULL);
+        else
+          g_object_set (dvbbasebin, "bandwidth", 3, NULL);
+
+        val = g_hash_table_lookup (params, "code-rate-hp");
+        if (strcmp (val, "FEC_NONE") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 0, NULL);
+        else if (strcmp (val, "FEC_1_2") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 1, NULL);
+        else if (strcmp (val, "FEC_2_3") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 2, NULL);
+        else if (strcmp (val, "FEC_3_4") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 3, NULL);
+        else if (strcmp (val, "FEC_4_5") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 4, NULL);
+        else if (strcmp (val, "FEC_5_6") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 5, NULL);
+        else if (strcmp (val, "FEC_6_7") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 6, NULL);
+        else if (strcmp (val, "FEC_7_8") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 7, NULL);
+        else if (strcmp (val, "FEC_8_9") == 0)
+          g_object_set (dvbbasebin, "code-rate-hp", 8, NULL);
+        else
+          g_object_set (dvbbasebin, "code-rate-hp", 9, NULL);
+
+        val = g_hash_table_lookup (params, "code-rate-lp");
+        if (strcmp (val, "FEC_NONE") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 0, NULL);
+        else if (strcmp (val, "FEC_1_2") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 1, NULL);
+        else if (strcmp (val, "FEC_2_3") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 2, NULL);
+        else if (strcmp (val, "FEC_3_4") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 3, NULL);
+        else if (strcmp (val, "FEC_4_5") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 4, NULL);
+        else if (strcmp (val, "FEC_5_6") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 5, NULL);
+        else if (strcmp (val, "FEC_6_7") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 6, NULL);
+        else if (strcmp (val, "FEC_7_8") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 7, NULL);
+        else if (strcmp (val, "FEC_8_9") == 0)
+          g_object_set (dvbbasebin, "code-rate-lp", 8, NULL);
+        else
+          g_object_set (dvbbasebin, "code-rate-lp", 9, NULL);
+
+        val = g_hash_table_lookup (params, "modulation");
+        if (strcmp (val, "QPSK") == 0)
+          g_object_set (dvbbasebin, "modulation", 0, NULL);
+        else if (strcmp (val, "QAM_16") == 0)
+          g_object_set (dvbbasebin, "modulation", 1, NULL);
+        else if (strcmp (val, "QAM_32") == 0)
+          g_object_set (dvbbasebin, "modulation", 2, NULL);
+        else if (strcmp (val, "QAM_64") == 0)
+          g_object_set (dvbbasebin, "modulation", 3, NULL);
+        else if (strcmp (val, "QAM_128") == 0)
+          g_object_set (dvbbasebin, "modulation", 4, NULL);
+        else if (strcmp (val, "QAM_256") == 0)
+          g_object_set (dvbbasebin, "modulation", 5, NULL);
+        else
+          g_object_set (dvbbasebin, "modulation", 6, NULL);
+
+        val = g_hash_table_lookup (params, "transmission-mode");
+        if (strcmp (val, "TRANSMISSION_MODE_2K") == 0)
+          g_object_set (dvbbasebin, "trans-mode", 0, NULL);
+        else if (strcmp (val, "TRANSMISSION_MODE_8K") == 0)
+          g_object_set (dvbbasebin, "trans-mode", 1, NULL);
+        else
+          g_object_set (dvbbasebin, "trans-mode", 2, NULL);
+
+        val = g_hash_table_lookup (params, "guard");
+        if (strcmp (val, "GUARD_INTERVAL_1_32") == 0)
+          g_object_set (dvbbasebin, "guard", 0, NULL);
+        else if (strcmp (val, "GUARD_INTERVAL_1_16") == 0)
+          g_object_set (dvbbasebin, "guard", 1, NULL);
+        else if (strcmp (val, "GUARD_INTERVAL_1_8") == 0)
+          g_object_set (dvbbasebin, "guard", 2, NULL);
+        else if (strcmp (val, "GUARD_INTERVAL_1_4") == 0)
+          g_object_set (dvbbasebin, "guard", 3, NULL);
+        else
+          g_object_set (dvbbasebin, "guard", 4, NULL);
+
+        val = g_hash_table_lookup (params, "hierarchy");
+        if (strcmp (val, "HIERARCHY_NONE") == 0)
+          g_object_set (dvbbasebin, "hierarchy", 0, NULL);
+        else if (strcmp (val, "HIERARCHY_1") == 0)
+          g_object_set (dvbbasebin, "hierarchy", 1, NULL);
+        else if (strcmp (val, "HIERARCHY_2") == 0)
+          g_object_set (dvbbasebin, "hierarchy", 2, NULL);
+        else if (strcmp (val, "HIERARCHY_4") == 0)
+          g_object_set (dvbbasebin, "hierarchy", 3, NULL);
+        else
+          g_object_set (dvbbasebin, "hierarchy", 4, NULL);
+
+        ret = TRUE;
+      } else if (strcmp (type, "satellite") == 0) {
+        gchar *val;
+
+        ret = TRUE;
+
+        val = g_hash_table_lookup (params, "polarity");
+        if (val)
+          g_object_set (dvbbasebin, "polarity", val, NULL);
+        else
+          ret = FALSE;
+
+        val = g_hash_table_lookup (params, "diseqc-source");
+        if (val)
+          g_object_set (dvbbasebin, "diseqc-source", atoi (val), NULL);
+
+        val = g_hash_table_lookup (params, "symbol-rate");
+        if (val)
+          g_object_set (dvbbasebin, "symbol-rate", atoi (val), NULL);
+        else
+          ret = FALSE;
+      }
+
+    }
+    destroy_channels_hash (channels);
+  }
+
+  return ret;
+}
diff --git a/sys/dvb/parsechannels.h b/sys/dvb/parsechannels.h
new file mode 100644
index 00000000..727419b1
--- /dev/null
+++ b/sys/dvb/parsechannels.h
@@ -0,0 +1,31 @@
+/*
+ * parsechannels.h - Parse channels.conf
+ * Copyright (C) 2007 Alessandro Decina
+ * 
+ * Authors:
+ *   Zaheer Abbas Merali <zaheerabbas at merali dot 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.
+ */
+
+#ifndef PARSE_CHANNELS_H
+#define PARSE_CHANNELS_H
+
+GHashTable* parse_channels_conf_from_file(const gchar* filename);
+gboolean set_properties_for_channel(GObject *dvbbasebin, 
+  const gchar* channel_name);
+
+#endif