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17181bfe16
Change avoids attempting to convert to kHz if unneeded. There are quite some ZAP format variants out there. Among their subtle little differences, some store transponder frequencies in Mhz and others in kHz. The latter been the most common variant.
460 lines
16 KiB
C
460 lines
16 KiB
C
/*
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* parsechannels.c -
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* Copyright (C) 2008 Zaheer Abbas Merali
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*
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* Authors:
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* Zaheer Abbas Merali <zaheerabbas at merali dot org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib.h>
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#include <glib-object.h>
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#include <stdlib.h>
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#include <string.h>
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#include <gst/gst.h>
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#include <gst/gst-i18n-plugin.h>
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#include "parsechannels.h"
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#include <linux/dvb/frontend.h>
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GST_DEBUG_CATEGORY_EXTERN (dvb_base_bin_debug);
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#define GST_CAT_DEFAULT dvb_base_bin_debug
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/* TODO:
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* Store the channels hash table around instead of constantly parsing it
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* Detect when the file changed on disk
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*/
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/* this will do zap style channels.conf only for the moment */
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static GHashTable *
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parse_channels_conf_from_file (GstElement * dvbbasebin, const gchar * filename,
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GError ** error)
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{
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gchar *contents;
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gchar **lines;
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gchar *line;
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gchar **fields;
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const gchar *terrestrial[] = { "inversion", "bandwidth",
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"code-rate-hp", "code-rate-lp", "modulation", "transmission-mode",
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"guard", "hierarchy"
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};
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const gchar *satellite[] = { "polarity", "diseqc-source",
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"symbol-rate"
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};
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const gchar *cable[] = { "inversion", "symbol-rate", "code-rate-hp",
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"modulation"
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};
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int i, parsedchannels = 0;
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GHashTable *res;
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GError *err = NULL;
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GST_INFO_OBJECT (dvbbasebin, "parsing '%s'", filename);
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if (!g_file_get_contents (filename, &contents, NULL, &err))
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goto open_fail;
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lines = g_strsplit (contents, "\n", 0);
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res = g_hash_table_new (g_str_hash, g_str_equal);
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i = 0;
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line = lines[0];
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while (line != NULL) {
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if (line[0] != '#') {
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int numfields;
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gboolean parsed = FALSE;
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GHashTable *params = g_hash_table_new_full (g_str_hash, g_str_equal,
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g_free, g_free);
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fields = g_strsplit (line, ":", 0);
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numfields = g_strv_length (fields);
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if (numfields == 8) {
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/* satellite */
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int j;
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g_hash_table_insert (params, g_strdup ("type"), g_strdup ("satellite"));
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for (j = 2; j <= 4; j++) {
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g_hash_table_insert (params, g_strdup (satellite[j - 2]),
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g_strdup (fields[j]));
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}
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/**
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* Some ZAP format variations store freqs in MHz
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* but we internally use kHz for DVB-S/S2.
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*/
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if (strlen (fields[1]) < 6) {
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g_hash_table_insert (params, g_strdup ("frequency"),
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g_strdup_printf ("%d", atoi (fields[1]) * 1000));
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} else {
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g_hash_table_insert (params, g_strdup ("frequency"),
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g_strdup_printf ("%d", atoi (fields[1])));
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}
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parsed = TRUE;
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} else if (numfields == 13) {
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/* terrestrial */
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int j;
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g_hash_table_insert (params, g_strdup ("type"),
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g_strdup ("terrestrial"));
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for (j = 2; j <= 9; j++) {
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g_hash_table_insert (params, g_strdup (terrestrial[j - 2]),
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g_strdup (fields[j]));
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}
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g_hash_table_insert (params, g_strdup ("frequency"),
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g_strdup (fields[1]));
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parsed = TRUE;
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} else if (numfields == 9) {
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/* cable */
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int j;
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g_hash_table_insert (params, g_strdup ("type"), g_strdup ("cable"));
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for (j = 2; j <= 5; j++) {
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g_hash_table_insert (params, g_strdup (cable[j - 2]),
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g_strdup (fields[j]));
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}
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g_hash_table_insert (params, g_strdup ("frequency"),
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g_strdup (fields[1]));
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parsed = TRUE;
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} else if (numfields == 6) {
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/* atsc (vsb/qam) */
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g_hash_table_insert (params, g_strdup ("type"), g_strdup ("atsc"));
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g_hash_table_insert (params, g_strdup ("modulation"),
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g_strdup (fields[2]));
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g_hash_table_insert (params, g_strdup ("frequency"),
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g_strdup (fields[1]));
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parsed = TRUE;
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}
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if (parsed) {
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g_hash_table_insert (params, g_strdup ("sid"),
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g_strdup (fields[numfields - 1]));
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g_hash_table_insert (res, g_strdup (fields[0]), params);
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parsedchannels++;
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}
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g_strfreev (fields);
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}
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line = lines[++i];
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}
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g_strfreev (lines);
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g_free (contents);
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if (parsedchannels == 0)
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goto no_channels;
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return res;
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open_fail:
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{
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if (err->code == G_FILE_ERROR_NOENT) {
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g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_NOT_FOUND,
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_("Couldn't find DVB channel configuration file"));
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} else {
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g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_READ,
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_("Couldn't load DVB channel configuration file: %s"), err->message);
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}
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g_clear_error (&err);
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return NULL;
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}
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no_channels:
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{
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g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_FAILED,
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_("DVB channel configuration file doesn't contain any channels"));
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g_hash_table_unref (res);
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return NULL;
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}
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}
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static gboolean
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remove_channel_from_hash (gpointer key, gpointer value, gpointer user_data)
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{
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if (key)
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g_free (key);
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if (value)
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g_hash_table_destroy ((GHashTable *) value);
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return TRUE;
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}
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static void
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destroy_channels_hash (GHashTable * channels)
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{
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g_hash_table_foreach_remove (channels, remove_channel_from_hash, NULL);
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}
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gboolean
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set_properties_for_channel (GstElement * dvbbasebin,
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const gchar * channel_name, GError ** error)
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{
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gboolean ret = FALSE;
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GHashTable *channels, *params;
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gchar *filename;
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gchar *type;
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const gchar *adapter;
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filename = g_strdup (g_getenv ("GST_DVB_CHANNELS_CONF"));
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if (filename == NULL) {
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filename = g_build_filename (g_get_user_config_dir (),
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"gstreamer-" GST_API_VERSION, "dvb-channels.conf", NULL);
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}
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channels = parse_channels_conf_from_file (dvbbasebin, filename, error);
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g_free (filename);
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if (!channels)
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goto beach;
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params = g_hash_table_lookup (channels, channel_name);
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if (!params)
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goto unknown_channel;
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g_object_set (dvbbasebin, "program-numbers",
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g_hash_table_lookup (params, "sid"), NULL);
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/* check if it is terrestrial or satellite */
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adapter = g_getenv ("GST_DVB_ADAPTER");
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if (adapter)
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g_object_set (dvbbasebin, "adapter", atoi (adapter), NULL);
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g_object_set (dvbbasebin, "frequency",
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atoi (g_hash_table_lookup (params, "frequency")), NULL);
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type = g_hash_table_lookup (params, "type");
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if (strcmp (type, "terrestrial") == 0) {
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gchar *val;
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g_object_set (dvbbasebin, "delsys", SYS_DVBT, NULL);
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val = g_hash_table_lookup (params, "inversion");
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if (strcmp (val, "INVERSION_OFF") == 0)
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g_object_set (dvbbasebin, "inversion", 0, NULL);
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else if (strcmp (val, "INVERSION_ON") == 0)
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g_object_set (dvbbasebin, "inversion", 1, NULL);
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else
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g_object_set (dvbbasebin, "inversion", 2, NULL);
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val = g_hash_table_lookup (params, "bandwidth");
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if (strcmp (val, "BANDWIDTH_8_MHZ") == 0)
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g_object_set (dvbbasebin, "bandwidth", 0, NULL);
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else if (strcmp (val, "BANDWIDTH_7_MHZ") == 0)
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g_object_set (dvbbasebin, "bandwidth", 1, NULL);
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else if (strcmp (val, "BANDWIDTH_6_MHZ") == 0)
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g_object_set (dvbbasebin, "bandwidth", 2, NULL);
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else
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g_object_set (dvbbasebin, "bandwidth", 3, NULL);
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val = g_hash_table_lookup (params, "code-rate-hp");
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if (strcmp (val, "FEC_NONE") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 0, NULL);
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else if (strcmp (val, "FEC_1_2") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 1, NULL);
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else if (strcmp (val, "FEC_2_3") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 2, NULL);
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else if (strcmp (val, "FEC_3_4") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 3, NULL);
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else if (strcmp (val, "FEC_4_5") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 4, NULL);
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else if (strcmp (val, "FEC_5_6") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 5, NULL);
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else if (strcmp (val, "FEC_6_7") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 6, NULL);
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else if (strcmp (val, "FEC_7_8") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 7, NULL);
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else if (strcmp (val, "FEC_8_9") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 8, NULL);
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else
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g_object_set (dvbbasebin, "code-rate-hp", 9, NULL);
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val = g_hash_table_lookup (params, "code-rate-lp");
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if (strcmp (val, "FEC_NONE") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 0, NULL);
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else if (strcmp (val, "FEC_1_2") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 1, NULL);
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else if (strcmp (val, "FEC_2_3") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 2, NULL);
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else if (strcmp (val, "FEC_3_4") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 3, NULL);
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else if (strcmp (val, "FEC_4_5") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 4, NULL);
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else if (strcmp (val, "FEC_5_6") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 5, NULL);
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else if (strcmp (val, "FEC_6_7") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 6, NULL);
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else if (strcmp (val, "FEC_7_8") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 7, NULL);
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else if (strcmp (val, "FEC_8_9") == 0)
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g_object_set (dvbbasebin, "code-rate-lp", 8, NULL);
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else
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g_object_set (dvbbasebin, "code-rate-lp", 9, NULL);
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val = g_hash_table_lookup (params, "modulation");
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if (strcmp (val, "QPSK") == 0)
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g_object_set (dvbbasebin, "modulation", 0, NULL);
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else if (strcmp (val, "QAM_16") == 0)
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g_object_set (dvbbasebin, "modulation", 1, NULL);
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else if (strcmp (val, "QAM_32") == 0)
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g_object_set (dvbbasebin, "modulation", 2, NULL);
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else if (strcmp (val, "QAM_64") == 0)
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g_object_set (dvbbasebin, "modulation", 3, NULL);
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else if (strcmp (val, "QAM_128") == 0)
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g_object_set (dvbbasebin, "modulation", 4, NULL);
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else if (strcmp (val, "QAM_256") == 0)
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g_object_set (dvbbasebin, "modulation", 5, NULL);
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else
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g_object_set (dvbbasebin, "modulation", 6, NULL);
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val = g_hash_table_lookup (params, "transmission-mode");
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if (strcmp (val, "TRANSMISSION_MODE_2K") == 0)
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g_object_set (dvbbasebin, "trans-mode", 0, NULL);
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else if (strcmp (val, "TRANSMISSION_MODE_8K") == 0)
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g_object_set (dvbbasebin, "trans-mode", 1, NULL);
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else
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g_object_set (dvbbasebin, "trans-mode", 2, NULL);
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val = g_hash_table_lookup (params, "guard");
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if (strcmp (val, "GUARD_INTERVAL_1_32") == 0)
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g_object_set (dvbbasebin, "guard", 0, NULL);
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else if (strcmp (val, "GUARD_INTERVAL_1_16") == 0)
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g_object_set (dvbbasebin, "guard", 1, NULL);
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else if (strcmp (val, "GUARD_INTERVAL_1_8") == 0)
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g_object_set (dvbbasebin, "guard", 2, NULL);
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else if (strcmp (val, "GUARD_INTERVAL_1_4") == 0)
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g_object_set (dvbbasebin, "guard", 3, NULL);
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else
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g_object_set (dvbbasebin, "guard", 4, NULL);
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val = g_hash_table_lookup (params, "hierarchy");
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if (strcmp (val, "HIERARCHY_NONE") == 0)
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g_object_set (dvbbasebin, "hierarchy", 0, NULL);
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else if (strcmp (val, "HIERARCHY_1") == 0)
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g_object_set (dvbbasebin, "hierarchy", 1, NULL);
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else if (strcmp (val, "HIERARCHY_2") == 0)
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g_object_set (dvbbasebin, "hierarchy", 2, NULL);
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else if (strcmp (val, "HIERARCHY_4") == 0)
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g_object_set (dvbbasebin, "hierarchy", 3, NULL);
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else
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g_object_set (dvbbasebin, "hierarchy", 4, NULL);
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ret = TRUE;
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} else if (strcmp (type, "satellite") == 0) {
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gchar *val;
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ret = TRUE;
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g_object_set (dvbbasebin, "delsys", SYS_DVBS, NULL);
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val = g_hash_table_lookup (params, "polarity");
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if (val)
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g_object_set (dvbbasebin, "polarity", val, NULL);
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else
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ret = FALSE;
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val = g_hash_table_lookup (params, "diseqc-source");
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if (val)
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g_object_set (dvbbasebin, "diseqc-source", atoi (val), NULL);
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val = g_hash_table_lookup (params, "symbol-rate");
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if (val)
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g_object_set (dvbbasebin, "symbol-rate", atoi (val), NULL);
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else
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ret = FALSE;
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} else if (strcmp (type, "cable") == 0) {
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gchar *val;
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g_object_set (dvbbasebin, "delsys", SYS_DVBC_ANNEX_A, NULL);
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ret = TRUE;
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val = g_hash_table_lookup (params, "symbol-rate");
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if (val)
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g_object_set (dvbbasebin, "symbol-rate", atoi (val) / 1000, NULL);
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val = g_hash_table_lookup (params, "modulation");
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if (strcmp (val, "QPSK") == 0)
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g_object_set (dvbbasebin, "modulation", 0, NULL);
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else if (strcmp (val, "QAM_16") == 0)
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g_object_set (dvbbasebin, "modulation", 1, NULL);
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else if (strcmp (val, "QAM_32") == 0)
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g_object_set (dvbbasebin, "modulation", 2, NULL);
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else if (strcmp (val, "QAM_64") == 0)
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g_object_set (dvbbasebin, "modulation", 3, NULL);
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else if (strcmp (val, "QAM_128") == 0)
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g_object_set (dvbbasebin, "modulation", 4, NULL);
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else if (strcmp (val, "QAM_256") == 0)
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g_object_set (dvbbasebin, "modulation", 5, NULL);
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else
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g_object_set (dvbbasebin, "modulation", 6, NULL);
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val = g_hash_table_lookup (params, "code-rate-hp");
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if (strcmp (val, "FEC_NONE") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 0, NULL);
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else if (strcmp (val, "FEC_1_2") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 1, NULL);
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else if (strcmp (val, "FEC_2_3") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 2, NULL);
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else if (strcmp (val, "FEC_3_4") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 3, NULL);
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else if (strcmp (val, "FEC_4_5") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 4, NULL);
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else if (strcmp (val, "FEC_5_6") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 5, NULL);
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else if (strcmp (val, "FEC_6_7") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 6, NULL);
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else if (strcmp (val, "FEC_7_8") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 7, NULL);
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else if (strcmp (val, "FEC_8_9") == 0)
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g_object_set (dvbbasebin, "code-rate-hp", 8, NULL);
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else
|
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g_object_set (dvbbasebin, "code-rate-hp", 9, NULL);
|
|
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);
|
|
} else if (strcmp (type, "atsc") == 0) {
|
|
gchar *val;
|
|
|
|
ret = TRUE;
|
|
|
|
g_object_set (dvbbasebin, "delsys", SYS_ATSC, NULL);
|
|
|
|
val = g_hash_table_lookup (params, "modulation");
|
|
if (strcmp (val, "QAM_64") == 0)
|
|
g_object_set (dvbbasebin, "modulation", 3, NULL);
|
|
else if (strcmp (val, "QAM_256") == 0)
|
|
g_object_set (dvbbasebin, "modulation", 5, NULL);
|
|
else if (strcmp (val, "8VSB") == 0)
|
|
g_object_set (dvbbasebin, "modulation", 7, NULL);
|
|
else if (strcmp (val, "16VSB") == 0)
|
|
g_object_set (dvbbasebin, "modulation", 8, NULL);
|
|
else
|
|
ret = FALSE;
|
|
}
|
|
|
|
destroy_channels_hash (channels);
|
|
|
|
beach:
|
|
return ret;
|
|
|
|
unknown_channel:
|
|
{
|
|
/* FIXME: is channel name guaranteed to be ASCII or UTF-8? */
|
|
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_NOT_FOUND,
|
|
_("Couldn't find details for DVB channel %s"), channel_name);
|
|
destroy_channels_hash (channels);
|
|
return FALSE;
|
|
}
|
|
}
|