asi: call asi_Reset() on transport errors iso dvb_Reset()

The demuxer calls dvb_Reset() even when reading from an ASI device. The
dvb_Reset() tried to retune using FrontendSet() that issues an IOCTL FE_GET_INFO.
When reading from an ASI card there is no such IOCTL. This patch adds an pf_Reset
that makes sure the proper reset code for current device is called.

asi.c

@@ -164,6 +164,14 @@ void asi_Open( void )
     fsync( i_handle );
 }
 
+/*****************************************************************************
+ * asi_Reset
+ *****************************************************************************/
+void asi_Reset( void )
+{
+    msg_Warn( NULL, "asi_Reset() do nothing" );
+}
+
 /*****************************************************************************
  * asi_Read : read packets from the device
  *****************************************************************************/

demux.c

@@ -200,7 +200,7 @@ static void demux_Handle( block_t *p_ts )
         i_nb_errors = 0;
         msg_Warn( NULL,
                  "too many transport errors, tuning again" );
-        dvb_Reset();
+        pf_Reset();
     }
 
     if ( p_pids[i_pid].i_refcount )

dvblast.c

@@ -76,6 +76,7 @@ int b_src_rawudp = 0;
 int i_asi_adapter = 0;
 
 void (*pf_Open)( void ) = NULL;
+void (*pf_Reset)( void ) = NULL;
 block_t * (*pf_Read)( mtime_t i_poll_timeout ) = NULL;
 int (*pf_SetFilter)( uint16_t i_pid ) = NULL;
 void (*pf_UnsetFilter)( int i_fd, uint16_t i_pid ) = NULL;
@@ -478,6 +479,7 @@ int main( int i_argc, char **pp_argv )
             if ( pf_Open != NULL )
                 usage();
             pf_Open = dvb_Open;
+            pf_Reset = dvb_Reset;
             pf_Read = dvb_Read;
             pf_SetFilter = dvb_SetFilter;
             pf_UnsetFilter = dvb_UnsetFilter;
@@ -635,6 +637,7 @@ int main( int i_argc, char **pp_argv )
             }
 
             pf_Open = udp_Open;
+            pf_Open = dvb_Reset;
             pf_Read = udp_Read;
             pf_SetFilter = udp_SetFilter;
             pf_UnsetFilter = udp_UnsetFilter;
@@ -665,6 +668,7 @@ int main( int i_argc, char **pp_argv )
                 usage();
             }
             pf_Open = asi_Open;
+            pf_Reset = asi_Reset;
             pf_Read = asi_Read;
             pf_SetFilter = asi_SetFilter;
             pf_UnsetFilter = asi_UnsetFilter;

dvblast.h

@@ -139,6 +139,7 @@ extern int b_src_rawudp;
 extern int i_asi_adapter;
 
 extern void (*pf_Open)( void );
+extern void (*pf_Reset)( void );
 extern block_t * (*pf_Read)( mtime_t i_poll_timeout );
 extern int (*pf_SetFilter)( uint16_t i_pid );
 extern void (*pf_UnsetFilter)( int i_fd, uint16_t i_pid );
@@ -176,6 +177,7 @@ int udp_SetFilter( uint16_t i_pid );
 void udp_UnsetFilter( int i_fd, uint16_t i_pid );
 
 void asi_Open( void );
+void asi_Reset( void );
 block_t * asi_Read( mtime_t i_poll_timeout );
 int asi_SetFilter( uint16_t i_pid );
 void asi_UnsetFilter( int i_fd, uint16_t i_pid );