send mp3 url metadata into a format specific routine

svn path=/trunk/icecast/; revision=5864

src/format.h

@@ -54,7 +54,7 @@ typedef struct _format_plugin_tag
             struct source_tag *source, client_t *client);
     void (*client_send_headers)(struct _format_plugin_tag *format, 
             struct source_tag *source, client_t *client);
-
+    void (*set_tag)(struct _format_plugin_tag *plugin, char *tag, char *value);
     void (*free_plugin)(struct _format_plugin_tag *self);
 
     /* for internal state management */

src/format_mp3.c

@@ -63,6 +63,7 @@ static int format_mp3_write_buf_to_client(format_plugin_t *self,
         client_t *client, unsigned char *buf, int len);
 static void format_mp3_send_headers(format_plugin_t *self, 
         source_t *source, client_t *client);
+static void mp3_set_tag (format_plugin_t *plugin, char *tag, char *value);
 
 typedef struct {
    int use_metadata;
@@ -88,6 +89,7 @@ format_plugin_t *format_mp3_get_plugin(http_parser_t *parser)
     plugin->create_client_data = format_mp3_create_client_data;
     plugin->client_send_headers = format_mp3_send_headers;
     plugin->free_plugin = format_mp3_free_plugin;
+    plugin->set_tag = mp3_set_tag;
     plugin->format_description = "MP3 audio";
 
     plugin->_state = state;
@@ -103,6 +105,19 @@ format_plugin_t *format_mp3_get_plugin(http_parser_t *parser)
     return plugin;
 }
 
+
+static void mp3_set_tag (format_plugin_t *plugin, char *tag, char *value)
+{
+    mp3_state *state = plugin->_state;
+
+    thread_mutex_lock(&(state->lock));
+    free(state->metadata);
+    state->metadata = strdup(value);
+    state->metadata_age++;
+    thread_mutex_unlock(&(state->lock));
+}
+
+
 static int send_metadata(client_t *client, mp3_client_data *client_state,
         mp3_state *source_state)
 {

src/format_vorbis.c

@@ -77,6 +77,7 @@ format_plugin_t *format_vorbis_get_plugin(void)
     plugin->create_client_data = format_vorbis_create_client_data;
     plugin->client_send_headers = format_vorbis_send_headers;
     plugin->free_plugin = format_vorbis_free_plugin;
+    plugin->set_tag = NULL;
     plugin->format_description = "Ogg Vorbis";
 
     state = (vstate_t *)calloc(1, sizeof(vstate_t));