-New method using netlist to read packets on DVD device by sectors of

2048 bytes.
-Some modifications in netlist to make it work with DVD.
-Fixed � bug in mpeg_system.c

We use INPUT_READ_ONCE many times in the input code. I think that
we should replace it with a field in input_thread_t to give more
flexibility to modules. I have done it in DVD plugin but it can't work
if input.c is limited by INPUT_READ_ONCE.

The DVD method is slower than input_ps ; but there are things to
improve.
CSS descrambling is broken.

src/input/css_table.h

@@ -2,6 +2,7 @@
  * css_table.h : Various tables needed by css unencryption
  *****************************************************************************
  * Copyright (C) 1999-2001 VideoLAN
+ * $Id: css_table.h,v 1.2 2001/02/08 01:34:41 stef Exp $
  *
  * Author: Stphane Borel <stef@via.ecp.fr>
  *

src/input/dvd_css.c

@@ -2,6 +2,7 @@
  * dvd_css.c: Functions for DVD authentification and unscrambling
  *****************************************************************************
  * Copyright (C) 1999-2001 VideoLAN
+ * $Id: dvd_css.c,v 1.5 2001/02/08 01:34:41 stef Exp $
  *
  * Author: Stphane Borel <stef@via.ecp.fr>
  *
@@ -46,6 +47,8 @@
 
 #include "intf_msg.h"
 #include "dvd_css.h"
+#include "dvd_ifo.h"
+#include "input_dvd.h"
 #include "css_table.h"
 
 /*****************************************************************************
@@ -658,6 +661,25 @@ static int CSScracker( int StartVal,
  * Authentication and keys
  */
 
+/*****************************************************************************
+ * CSSTest : check if the disc is encrypted or not
+ *****************************************************************************/
+int CSSTest( int i_fd )
+{
+    dvd_struct dvd;
+
+    dvd.type = DVD_STRUCT_COPYRIGHT;
+    dvd.copyright.layer_num = 0;
+
+    if( ioctl( i_fd, DVD_READ_STRUCT, &dvd ) < 0 )
+    {
+        intf_ErrMsg( "DVD ioctl error" );
+        return -1;
+    }
+
+    return dvd.copyright.cpst;
+}
+
 /*****************************************************************************
  * CSSInit : CSS Structure initialisation and DVD authentication.
  *****************************************************************************/

src/input/dvd_css.h

@@ -2,6 +2,7 @@
  * dvd_css.h: Structures for DVD authentification and unscrambling
  *****************************************************************************
  * Copyright (C) 1999-2001 VideoLAN
+ * $Id: dvd_css.h,v 1.5 2001/02/08 01:34:41 stef Exp $
  *
  * Author: Stphane Borel <stef@via.ecp.fr>
  *
@@ -19,7 +20,6 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  *****************************************************************************/
-#if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD )
 #define KEY_SIZE 5
 
 typedef u8 DVD_key_t[KEY_SIZE];
@@ -52,11 +52,3 @@ typedef struct css_s
     int             i_title_nb;
     title_key_t*    p_title_key;
 } css_t;
-
-/*****************************************************************************
- * Prototypes in dvd_css.c
- *****************************************************************************/
-struct css_s    CSSInit     ( int );
-int             CSSGetKeys  ( struct css_s* );
-int             CSSDescrambleSector( DVD_key_t , u8* );
-#endif

src/input/dvd_ifo.c

@@ -2,6 +2,7 @@
  * dvd_ifo.c: Functions for ifo parsing
  *****************************************************************************
  * Copyright (C) 1999-2001 VideoLAN
+ * $Id: dvd_ifo.c,v 1.7 2001/02/08 01:34:41 stef Exp $
  *
  * Author: Stphane Borel <stef@via.ecp.fr>
  *
@@ -33,6 +34,7 @@
 
 #include "intf_msg.h"
 #include "dvd_ifo.h"
+#include "input_dvd.h"
 
 /*
  * IFO Management.
@@ -176,8 +178,7 @@ void IfoEnd( ifo_t* p_ifo )
 /*fprintf(stderr, "Pos : %lld Val : %llx\n",                                  \
                                 (long long)(p_ifo->i_pos - i_start),        \
                                 (long long)*(p_field) );    */                \
-        p_ifo->i_pos =                                                      \
-                   lseek64( p_ifo->i_fd, p_ifo->i_pos + (i_len), SEEK_SET );\
+        p_ifo->i_pos += i_len;                                              \
     }
 
 #define GETC( p_field )                                                     \
@@ -186,7 +187,7 @@ void IfoEnd( ifo_t* p_ifo )
 /*fprintf(stderr, "Pos : %lld Value : %d\n",                                  \
                                 (long long)(p_ifo->i_pos - i_start),        \
                                           *(p_field) );*/                     \
-        p_ifo->i_pos = lseek64( p_ifo->i_fd , p_ifo->i_pos + 1 , SEEK_SET );\
+        p_ifo->i_pos += 1;                                                  \
     }
 
 #define GETS( p_field )                                                     \
@@ -196,7 +197,7 @@ void IfoEnd( ifo_t* p_ifo )
 /*fprintf(stderr, "Pos : %lld Value : %d\n",                                  \
                                 (long long)(p_ifo->i_pos - i_start),        \
                                           *(p_field) );*/                     \
-        p_ifo->i_pos = lseek64( p_ifo->i_fd , p_ifo->i_pos + 2 , SEEK_SET );\
+        p_ifo->i_pos += 2;                                                  \
     }
 
 #define GETL( p_field )                                                     \
@@ -206,7 +207,7 @@ void IfoEnd( ifo_t* p_ifo )
 /*fprintf(stderr, "Pos : %lld Value : %d\n",                                  \
                                 (long long)(p_ifo->i_pos - i_start),        \
                                           *(p_field) );*/                     \
-        p_ifo->i_pos = lseek64( p_ifo->i_fd , p_ifo->i_pos + 4 , SEEK_SET );\
+        p_ifo->i_pos += 4;                                                  \
     }
 
 #define GETLL( p_field )                                                    \
@@ -216,7 +217,7 @@ void IfoEnd( ifo_t* p_ifo )
 /*fprintf(stderr, "Pos : %lld Value : %lld\n",                                \
                                 (long long)(p_ifo->i_pos - i_start),        \
                                             *(p_field) );*/                   \
-        p_ifo->i_pos = lseek64( p_ifo->i_fd , p_ifo->i_pos + 8 , SEEK_SET );\
+        p_ifo->i_pos += 8;                                                  \
     }
 
 #define FLUSH( i_len )                                                      \
@@ -246,9 +247,8 @@ void IfoEnd( ifo_t* p_ifo )
                                 (int)((p_com)->i_sub_cmd),                  \
                                 (int)((p_com)->i_v0),                       \
                                 (int)((p_com)->i_v2),                       \
-                                (int)((p_com)->i_v4) );*/                     \
-        p_ifo->i_pos =                                                      \
-                   lseek64( p_ifo->i_fd, p_ifo->i_pos + 8, SEEK_SET );      \
+                                (int)((p_com)->i_v4) );           */          \
+        p_ifo->i_pos += 8;                                                  \
     }
 
 static pgc_t ReadPGC( ifo_t* p_ifo )
@@ -1110,19 +1110,70 @@ void IfoRead( ifo_t* p_ifo )
 /*
  * IFO virtual machine : a set of commands that give the behaviour of the dvd
  */
-
+#if 0
 /*****************************************************************************
  * CommandRead : translates the command strings in ifo into command
  * structures.
  *****************************************************************************/
-ifo_command_t CommandRead( ifo_t* p_ifo )
+void CommandRead( ifo_command_t com )
 {
-    ifo_command_t   com;
+    u8*     pi_code = (u8*)(&com);
+
+    switch( com.i_type )
+    {
+        case 0:                                     /* Goto */
+            if( !pi_code[1] )
+            {
+                fprintf( stderr, "NOP\n" );
+            }
+            else if( cmd.i_cmp )
+            {
+                
+            }
+            break;
+        case 1:                                     /* Lnk */
+            break;
+        case 2:                                     /* SetSystem */
+            break;
+        case 3:                                     /* Set */
+            break;
+        case 4:                                     /* */
+            break;
+        case 5:                                     /* */
+            break;
+        case 6:                                     /* */
+            break;
+        default:
+            fprintf( stderr, "Unknown Command\n" );
+            break;
+    }
 
-    return com;
+    return;
 }
 
 /*****************************************************************************
- *
+ * IfoGoto
  *****************************************************************************/
+static void IfoGoto( ifo_command_t cmd )
+{
+    
 
+    return;
+}
+
+/*****************************************************************************
+ * IfoLnk
+ *****************************************************************************/
+static void IfoLnk( ifo_t* p_ifo )
+{
+    return;
+}
+
+/*****************************************************************************
+ * IfoJmp
+ *****************************************************************************/
+static void IfoJmp( ifo_t* p_ifo )
+{
+    return;
+}
+#endif

src/input/dvd_ifo.h

@@ -2,6 +2,7 @@
  * dvd_ifo.h: Structures for ifo parsing
  *****************************************************************************
  * Copyright (C) 1999-2001 VideoLAN
+ * $Id: dvd_ifo.h,v 1.7 2001/02/08 01:34:42 stef Exp $
  *
  * Author: Stphane Borel <stef@via.ecp.fr>
  *
@@ -20,11 +21,6 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  *****************************************************************************/
 
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
-#define DVD_LB_SIZE 2048
-
 /*****************************************************************************
  * Common structures for Video Management and Video Title sets
  *****************************************************************************/
@@ -492,8 +488,3 @@ typedef struct ifo_s
     vts_t *         p_vts;
 } ifo_t;
 
-/*****************************************************************************
- * Prototypes in dvd_ifo.c
- *****************************************************************************/
-ifo_t   IfoInit( int );
-void    IfoRead( ifo_t* );

src/input/input_dvd.h

@@ -20,19 +20,42 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  *****************************************************************************/
 
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#define DVD_LB_SIZE 2048
+
 /*****************************************************************************
  * thread_dvd_data_t: extension of input_thread_t for DVD specificity
  *****************************************************************************/
 typedef struct thread_dvd_data_s
 {
-    int                     i_fd;
-    boolean_t               b_encrypted;
-#if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD )
+    int                     i_fd;               // File descriptor of device
+    boolean_t               b_encrypted;        // CSS encryption
+    int                     i_read_once;        // NB of bytes read by DVDRead
+    int                     i_title;            // Current Title
     /* Scrambling Information */
+#if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD )
     struct css_s            css;
 #endif
     /* Structure that contains all information of the DVD */
     struct ifo_s            ifo;
 } thread_dvd_data_t;
 
+/*****************************************************************************
+ * Prototypes in dvd_ifo.c
+ *****************************************************************************/
+struct ifo_s    IfoInit( int );
+void            IfoRead( struct ifo_s * );
+void            IfoEnd( ifo_t * );
+
+/*****************************************************************************
+ * Prototypes in dvd_css.c
+ *****************************************************************************/
+#if defined( HAVE_SYS_DVDIO_H ) || defined( LINUX_DVD )
+int             CSSTest     ( int );
+struct css_s    CSSInit     ( int );
+int             CSSGetKeys  ( struct css_s * );
+int             CSSDescrambleSector( u8 * , u8 * );
 
+#endif

src/input/input_netlist.c

@@ -2,7 +2,7 @@
  * input_netlist.c: netlist management
  *****************************************************************************
  * Copyright (C) 1998, 1999, 2000 VideoLAN
- * $Id: input_netlist.c,v 1.28 2001/01/07 03:56:40 henri Exp $
+ * $Id: input_netlist.c,v 1.29 2001/02/08 01:34:42 stef Exp $
  *
  * Authors: Henri Fallon <henri@videolan.org>
  *
@@ -52,7 +52,7 @@
  * input_NetlistInit: allocates netlist buffers and init indexes
  *****************************************************************************/
 int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
-                       size_t i_buffer_size )
+                       size_t i_buffer_size, int i_read_once )
 {
     unsigned int i_loop;
     netlist_t * p_netlist;
@@ -155,13 +155,16 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
     p_netlist->i_nb_pes = i_nb_pes;
     p_netlist->i_buffer_size = i_buffer_size;
 
+    p_netlist->i_read_once = i_read_once;
+
     return (0); /* Everything went all right */
 }
 
 /*****************************************************************************
  * input_NetlistGetiovec: returns an iovec pointer for a readv() operation
  *****************************************************************************/
-struct iovec * input_NetlistGetiovec( void * p_method_data )
+struct iovec * input_NetlistGetiovec( void * p_method_data,
+                                      struct data_packet_s ** pp_data )
 {
     netlist_t * p_netlist;
 
@@ -169,9 +172,9 @@ struct iovec * input_NetlistGetiovec( void * p_method_data )
     p_netlist = ( netlist_t * ) p_method_data;
     
     /* check */
-    if ( 
+    if( 
      (p_netlist->i_data_end - p_netlist->i_data_start + p_netlist->i_nb_data)
-     %p_netlist->i_nb_data < INPUT_READ_ONCE )
+     %p_netlist->i_nb_data < p_netlist->i_read_once )
     {
         intf_ErrMsg("Empty iovec FIFO. Unable to allocate memory");
         return (NULL);
@@ -181,13 +184,21 @@ struct iovec * input_NetlistGetiovec( void * p_method_data )
      * so, as a solution, we chose to have a FIFO a bit longer
      * than i_nb_data, and copy the begining of the FIFO to its end
      * if the readv needs to go after the end */
-    if( p_netlist->i_nb_data - p_netlist->i_data_start < INPUT_READ_ONCE )
+    if( p_netlist->i_nb_data - p_netlist->i_data_start <
+                                                    p_netlist->i_read_once )
+    {
         memcpy( &p_netlist->p_free_iovec[p_netlist->i_nb_data], 
                 p_netlist->p_free_iovec, 
-                INPUT_READ_ONCE-(p_netlist->i_nb_data-p_netlist->i_data_start)
-                * sizeof(struct iovec *)
+                (p_netlist->i_read_once-
+                    (p_netlist->i_nb_data-p_netlist->i_data_start))
+                    * sizeof(struct iovec*)
               );
 
+    }
+ 
+    /* Gives a pointer to the data_packet struct associated with io_vec */
+    *pp_data = p_netlist->pp_free_data[p_netlist->i_data_start];
+
     /* Initialize payload start and end */
     p_netlist->pp_free_data[p_netlist->i_data_start]->p_payload_start 
         = p_netlist->pp_free_data[p_netlist->i_data_start]->p_buffer;
@@ -259,10 +270,6 @@ struct data_packet_s * input_NetlistNewPacket( void * p_method_data,
     /* unlock */
     vlc_mutex_unlock (&p_netlist->lock);
 
-    if (i_buffer_size < p_netlist->i_buffer_size) 
-    {
-        p_return->p_payload_end = p_return->p_payload_start + i_buffer_size;
-    }
    
     /* initialize data */
     p_return->p_next = NULL;
@@ -363,7 +370,7 @@ void input_NetlistDeletePES( void * p_method_data, pes_packet_t * p_pes )
         p_netlist->pp_free_data[p_netlist->i_data_end] = p_current_packet;
         
         p_netlist->p_free_iovec[p_netlist->i_data_end].iov_base 
-            = p_netlist->p_data->p_buffer;
+            = p_current_packet->p_buffer;
     
         p_current_packet = p_current_packet->p_next;
     }
@@ -375,6 +382,7 @@ void input_NetlistDeletePES( void * p_method_data, pes_packet_t * p_pes )
     
     /* unlock */
     vlc_mutex_unlock (&p_netlist->lock);
+
 }
 
 /*****************************************************************************

src/input/input_netlist.h

@@ -24,6 +24,9 @@ typedef struct netlist_s
     /* Index */
     unsigned int            i_data_start, i_data_end;
     unsigned int            i_pes_start, i_pes_end;
+
+    /* Number of blocs read once by readv */
+    unsigned int            i_read_once;
 } netlist_t;
 
 /*****************************************************************************
@@ -31,8 +34,9 @@ typedef struct netlist_s
  *****************************************************************************/
 int                     input_NetlistInit( struct input_thread_s *,
                                            int i_nb_data, int i_nb_pes,
-                                           size_t i_buffer_size );
-struct iovec *          input_NetlistGetiovec( void * );
+                                           size_t i_buffer_size,
+                                           int i_read_once );
+struct iovec *          input_NetlistGetiovec( void *, struct data_packet_s** );
 void                    input_NetlistMviovec( void *, size_t );
 struct data_packet_s *  input_NetlistNewPacket( void *, size_t );
 struct pes_packet_s *   input_NetlistNewPES( void * );

src/input/mpeg_system.c

@@ -2,7 +2,7 @@
  * mpeg_system.c: TS, PS and PES management
  *****************************************************************************
  * Copyright (C) 1998, 1999, 2000 VideoLAN
- * $Id: mpeg_system.c,v 1.30 2001/02/07 17:44:52 massiot Exp $
+ * $Id: mpeg_system.c,v 1.31 2001/02/08 01:34:42 stef Exp $
  *
  * Authors: 
  *
@@ -396,6 +396,7 @@ void input_ParsePES( input_thread_t * p_input, es_descriptor_t * p_es )
         p_pes = NULL;
     }
 #undef p_pes
+
 }
 
 /*****************************************************************************
@@ -858,7 +859,7 @@ void input_DemuxPS( input_thread_t * p_input, data_packet_t * p_data )
     /* Trash the packet if it has no payload or if it isn't selected */
     if( b_trash )
     {
-        p_input->p_plugin->pf_delete_packet( p_input, p_data );
+        p_input->p_plugin->pf_delete_packet( p_input->p_method_data, p_data );
 #ifdef STATS
         p_input->c_packets_trashed++;
 #endif