logger: support android

(cherry picked from commit a43414d0)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/misc/Modules.am

@@ -44,6 +44,11 @@ libmce_plugin_la_DEPENDENCIES =
 EXTRA_LTLIBRARIES += libmce_plugin.la
 libvlc_LTLIBRARIES += $(LTLIBmce)
 
+liblogger_plugin_la_LIBADD = $(AM_LIBADD)
+if HAVE_ANDROID
+liblogger_plugin_la_LIBADD += -llog
+endif
+
 libvlc_LTLIBRARIES += \
 	libaudioscrobbler_plugin.la \
 	liblogger_plugin.la

modules/misc/logger.c

@@ -38,6 +38,10 @@
 #include <stdarg.h>
 #include <assert.h>
 
+#ifdef __ANDROID__
+# include <android/log.h>
+#endif
+
 #define MODE_TEXT 0
 #define MODE_HTML 1
 #define MODE_SYSLOG 2
@@ -95,6 +99,9 @@ static void HtmlPrint(void *, int, const msg_item_t *, const char *, va_list);
 static void SyslogPrint(void *, int, const msg_item_t *, const char *,
                         va_list);
 #endif
+#ifdef __ANDROID__
+static void AndroidPrint(void *, int, const msg_item_t *, const char *, va_list);
+#endif
 
 /*****************************************************************************
  * Module descriptor
@@ -103,11 +110,17 @@ static const char *const mode_list[] = { "text", "html"
 #ifdef HAVE_SYSLOG_H
 ,"syslog"
 #endif
+#ifdef __ANDROID__
+,"android"
+#endif
 };
 static const char *const mode_list_text[] = { N_("Text"), "HTML"
 #ifdef HAVE_SYSLOG_H
 , "syslog"
 #endif
+#ifdef __ANDROID__
+,"android"
+#endif
 };
 
 #define LOGMODE_TEXT N_("Log format")
@@ -117,8 +130,9 @@ static const char *const mode_list_text[] = { N_("Text"), "HTML"
 #else
 
 #define LOGMODE_LONGTEXT N_("Specify the log format. Available choices are " \
-  "\"text\" (default), \"html\", and \"syslog\" (special mode to send to " \
-  "syslog instead of file.")
+  "\"text\" (default), \"html\", \"syslog\" (special mode to send to " \
+  "syslog instead of file), and \"android\" (special mode to send to " \
+  "android logging facility).")
 
 #define SYSLOG_FACILITY_TEXT N_("Syslog facility")
 #define SYSLOG_FACILITY_LONGTEXT N_("Select the syslog facility where logs " \
@@ -211,6 +225,10 @@ static int Open( vlc_object_t *p_this )
 #ifdef HAVE_SYSLOG_H
         else if( !strcmp( mode, "syslog" ) )
             cb = SyslogPrint;
+#endif
+#ifdef __ANDROID__
+        else if( !strcmp( mode, "android" ) )
+            cb = AndroidPrint;
 #endif
         else if( strcmp( mode, "text" ) )
             msg_Warn( p_intf, "invalid log mode `%s', using `text'", mode );
@@ -253,6 +271,9 @@ static int Open( vlc_object_t *p_this )
         p_sys->p_file = NULL;
     }
     else
+#endif
+#ifdef __ANDROID__
+    if( cb != AndroidPrint )
 #endif
     {
         char *psz_file = var_InheritString( p_intf, "logfile" );
@@ -338,6 +359,29 @@ static const char ppsz_type[4][9] = {
     " debug",
 };
 
+#ifdef __ANDROID__
+static const android_LogPriority prioritytype[4] = {
+    ANDROID_LOG_INFO,
+    ANDROID_LOG_ERROR,
+    ANDROID_LOG_WARN,
+    ANDROID_LOG_DEBUG
+};
+
+static void AndroidPrint( void *opaque, int type, const msg_item_t *item,
+                       const char *fmt, va_list ap )
+{
+    (void)item;
+    intf_thread_t *p_intf = opaque;
+
+    if( IgnoreMessage( p_intf, type ) )
+        return;
+
+    int canc = vlc_savecancel();
+    __android_log_vprint(prioritytype[type], "vlc", fmt, ap);
+    vlc_restorecancel( canc );
+}
+#endif
+
 static void TextPrint( void *opaque, int type, const msg_item_t *item,
                        const char *fmt, va_list ap )
 {