Ticket #2799: guid.diff

/mythtv/contrib/channel_changers/

@@ -25 +25 @@
 #include <stdio.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <limits.h> //for LLONG_MAX
+#include <getopt.h>
 #include <unistd.h> // for usleep
 
 // Motorola DCT-6200 IDs
@@ -74 +76 @@
            STARTING_NODE);
    fprintf(stderr, "-p PORT   port/adapter to use              (default:%i)\n",
            STARTING_PORT);
+   fprintf(stderr, "-g GUID   GUID to use, -n switch, if present, will be ignored.\n");
    exit(1);
 }
 
@@ -84 +87 @@
    int i;
    int verbose = 0;
    int single_packet = 0;
+   int bGUID=0;
+   octlet_t cli_GUID=0LL;
+   octlet_t node_GUID=0LL;
    quadlet_t cmd[2];
    int chn = 550;
 
@@ -97 +103 @@
       usage();
 
    opterr = 0;
-   while ((c = getopt(argc, argv, "vsn:p:")) != -1)
+   while ((c = getopt(argc, argv, "vsg:n:p:")) != -1)
    {
        switch (c) {
        case 'v':
@@ -109 +115 @@
        case 'n':
            starting_node = atoi(optarg);
            break;
+       case 'g':
+           bGUID=1;
+           starting_node=0;
+           cli_GUID = (octlet_t)strtoll(optarg, (char **)NULL, 16);
+           break;
        case 'p':
            starting_port = atoi(optarg);
            break;
@@ -151 +162 @@
        printf("starting with node: %d\n", starting_node);
 
    int nc = raw1394_get_nodecount(handle);
+   if (bGUID!=0) {
+      if (cli_GUID==0LL || cli_GUID==LLONG_MAX || cli_GUID==LLONG_MIN) {
+          fprintf(stderr, "error parsing GUID command line parameter\n");
+          exit(1);
+      }   
+   }      
    for (i=starting_node; i < nc; ++i) {
+      if (bGUID!=0) {
+         node_GUID=rom1394_get_guid(handle, i);
+#ifdef DEBUG
+         printf("node=%d, node_GUID=%LX, cli_GUID=%LX\n", i, node_GUID, cli_GUID);
+#endif   
+         if (cli_GUID!=node_GUID) {
+             continue;
+         }
+      } 
+
       if (rom1394_get_directory(handle, i, &dir) < 0) {
          fprintf(stderr,"error reading config rom directory for node %d\n", i);
          raw1394_destroy_handle(handle);
@@ -239 +266 @@
  
     avc1394_transaction_block(handle, device, cmd, 3, RETRY_COUNT_FAST);
 }
+
+/*
+ *  Compile:
+ *     -std=gnu99 flag required for LLONG_MAX and LLONG_MIN inclusion
+ *  gcc -std=gnu99 -o 6200chguid 6200chguid.c -lavc1394 -lrom1394 -lraw1394
+ *
+ */