DVB: separate CA management

modules/access/dvb/Modules.am

 SOURCES_dvb = \
 	access.c \
-	scan.c \
-	scan.h \
+	scan.c scan.h \
 	linux_dvb.c \
-	en50221.c \
+	en50221.c en50221.h \
 	http.c \
 	dvb.h \
 	$(NULL)

modules/access/dvb/access.c

@@ -473,11 +473,7 @@ static block_t *Block( access_t *p_access )
             return NULL;
         }
 
-        if ( p_sys->i_ca_handle && mdate() > p_sys->i_ca_next_event )
-        {
-            CAMPoll( p_access );
-            p_sys->i_ca_next_event = mdate() + p_sys->i_ca_timeout;
-        }
+        CAMPoll( p_access );
 
         if ( ufds[1].revents )
         {

modules/access/dvb/dvb.h

@@ -51,113 +51,19 @@ typedef struct
 typedef struct scan_parameter_t scan_parameter_t;
 typedef struct scan_t scan_t;
 
-typedef struct en50221_session_t
-{
-    int i_slot;
-    int i_resource_id;
-    void (* pf_handle)( access_t *, int, uint8_t *, int );
-    void (* pf_close)( access_t *, int );
-    void (* pf_manage)( access_t *, int );
-    void *p_sys;
-} en50221_session_t;
-
-#define EN50221_MMI_NONE 0
-#define EN50221_MMI_ENQ 1
-#define EN50221_MMI_ANSW 2
-#define EN50221_MMI_MENU 3
-#define EN50221_MMI_MENU_ANSW 4
-#define EN50221_MMI_LIST 5
-
-typedef struct en50221_mmi_object_t
-{
-    int i_object_type;
-
-    union
-    {
-        struct
-        {
-            bool b_blind;
-            char *psz_text;
-        } enq;
-
-        struct
-        {
-            bool b_ok;
-            char *psz_answ;
-        } answ;
-
-        struct
-        {
-            char *psz_title, *psz_subtitle, *psz_bottom;
-            char **ppsz_choices;
-            int i_choices;
-        } menu; /* menu and list are the same */
-
-        struct
-        {
-            int i_choice;
-        } menu_answ;
-    } u;
-} en50221_mmi_object_t;
-
-static inline void en50221_MMIFree( en50221_mmi_object_t *p_object )
-{
-    int i;
-
-    switch ( p_object->i_object_type )
-    {
-    case EN50221_MMI_ENQ:
-        FREENULL( p_object->u.enq.psz_text );
-        break;
-
-    case EN50221_MMI_ANSW:
-        if ( p_object->u.answ.b_ok )
-        {
-            FREENULL( p_object->u.answ.psz_answ );
-        }
-        break;
-
-    case EN50221_MMI_MENU:
-    case EN50221_MMI_LIST:
-        FREENULL( p_object->u.menu.psz_title );
-        FREENULL( p_object->u.menu.psz_subtitle );
-        FREENULL( p_object->u.menu.psz_bottom );
-        for ( i = 0; i < p_object->u.menu.i_choices; i++ )
-        {
-            free( p_object->u.menu.ppsz_choices[i] );
-        }
-        FREENULL( p_object->u.menu.ppsz_choices );
-        break;
-
-    default:
-        break;
-    }
-}
-
 #define MAX_DEMUX 256
-#define MAX_CI_SLOTS 16
-#define MAX_SESSIONS 32
-#define MAX_PROGRAMS 24
+
+#include "en50221.h"
 
 struct access_sys_t
 {
     int i_handle, i_frontend_handle;
     demux_handle_t p_demux_handles[MAX_DEMUX];
     frontend_t *p_frontend;
+    mtime_t i_frontend_timeout;
     bool b_budget_mode;
 
-    /* CA management */
-    int i_ca_handle;
-    int i_ca_type;
-    int i_nb_slots;
-    bool pb_active_slot[MAX_CI_SLOTS];
-    bool pb_tc_has_data[MAX_CI_SLOTS];
-    bool pb_slot_mmi_expected[MAX_CI_SLOTS];
-    bool pb_slot_mmi_undisplayed[MAX_CI_SLOTS];
-    en50221_session_t p_sessions[MAX_SESSIONS];
-    mtime_t i_ca_timeout, i_ca_next_event, i_frontend_timeout;
-    dvbpsi_pmt_t *pp_selected_programs[MAX_PROGRAMS];
-    int i_selected_programs;
+    cam_t cam;
 
     /* */
     int i_read_once;
@@ -220,19 +126,6 @@ void CAMClose( access_t * );
 void CAMStatus( access_t * );
 #endif
 
-int en50221_Init( access_t * );
-int en50221_Poll( access_t * );
-int en50221_SetCAPMT( access_t *, dvbpsi_pmt_t * );
-int en50221_OpenMMI( access_t * p_access, int i_slot );
-int en50221_CloseMMI( access_t * p_access, int i_slot );
-en50221_mmi_object_t *en50221_GetMMIObject( access_t * p_access,
-                                                int i_slot );
-void en50221_SendMMIObject( access_t * p_access, int i_slot,
-                                en50221_mmi_object_t *p_object );
-void en50221_End( access_t * );
-
-char *dvbsi_to_utf8( const char *psz_instring, size_t i_length );
-
 #ifdef ENABLE_HTTPD
 int HTTPOpen( access_t *p_access );
 void HTTPClose( access_t *p_access );

modules/access/dvb/en50221.h

+/*****************************************************************************
+ * en50221.h:
+ *****************************************************************************
+ * Copyright (C) 1998-2010 the VideoLAN team
+ *
+ * Authors: Johan Bilien <jobi@via.ecp.fr>
+ *          Jean-Paul Saman <jpsaman _at_ videolan _dot_ org>
+ *          Christopher Ross <chris@tebibyte.org>
+ *          Christophe Massiot <massiot@via.ecp.fr>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.    See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA    02111, USA.
+ *****************************************************************************/
+
+typedef struct cam cam_t;
+
+typedef struct en50221_session_t
+{
+    unsigned i_slot;
+    int i_resource_id;
+    void (* pf_handle)( cam_t *, int, uint8_t *, int );
+    void (* pf_close)( cam_t *, int );
+    void (* pf_manage)( cam_t *, int );
+    void *p_sys;
+} en50221_session_t;
+
+#define EN50221_MMI_NONE 0
+#define EN50221_MMI_ENQ 1
+#define EN50221_MMI_ANSW 2
+#define EN50221_MMI_MENU 3
+#define EN50221_MMI_MENU_ANSW 4
+#define EN50221_MMI_LIST 5
+
+typedef struct en50221_mmi_object_t
+{
+    int i_object_type;
+
+    union
+    {
+        struct
+        {
+            bool b_blind;
+            char *psz_text;
+        } enq;
+
+        struct
+        {
+            bool b_ok;
+            char *psz_answ;
+        } answ;
+
+        struct
+        {
+            char *psz_title, *psz_subtitle, *psz_bottom;
+            char **ppsz_choices;
+            int i_choices;
+        } menu; /* menu and list are the same */
+
+        struct
+        {
+            int i_choice;
+        } menu_answ;
+    } u;
+} en50221_mmi_object_t;
+
+static inline void en50221_MMIFree( en50221_mmi_object_t *p_object )
+{
+    int i;
+
+    switch ( p_object->i_object_type )
+    {
+    case EN50221_MMI_ENQ:
+        FREENULL( p_object->u.enq.psz_text );
+        break;
+
+    case EN50221_MMI_ANSW:
+        if ( p_object->u.answ.b_ok )
+        {
+            FREENULL( p_object->u.answ.psz_answ );
+        }
+        break;
+
+    case EN50221_MMI_MENU:
+    case EN50221_MMI_LIST:
+        FREENULL( p_object->u.menu.psz_title );
+        FREENULL( p_object->u.menu.psz_subtitle );
+        FREENULL( p_object->u.menu.psz_bottom );
+        for ( i = 0; i < p_object->u.menu.i_choices; i++ )
+        {
+            free( p_object->u.menu.ppsz_choices[i] );
+        }
+        FREENULL( p_object->u.menu.ppsz_choices );
+        break;
+
+    default:
+        break;
+    }
+}
+
+/* CA management */
+#define MAX_CI_SLOTS 16
+#define MAX_SESSIONS 32
+#define MAX_PROGRAMS 24
+
+struct cam
+{
+    vlc_object_t *obj;
+    int i_ca_type;
+    int fd;
+    mtime_t i_timeout, i_next_event;
+
+    unsigned i_nb_slots;
+    bool pb_active_slot[MAX_CI_SLOTS];
+    bool pb_tc_has_data[MAX_CI_SLOTS];
+    bool pb_slot_mmi_expected[MAX_CI_SLOTS];
+    bool pb_slot_mmi_undisplayed[MAX_CI_SLOTS];
+    en50221_session_t p_sessions[MAX_SESSIONS];
+
+    dvbpsi_pmt_t *pp_selected_programs[MAX_PROGRAMS];
+    int i_selected_programs;
+};
+
+int en50221_Init( cam_t * );
+int en50221_Poll( cam_t * );
+int en50221_SetCAPMT( cam_t *, dvbpsi_pmt_t * );
+int en50221_OpenMMI( cam_t *, unsigned i_slot );
+int en50221_CloseMMI( cam_t *, unsigned i_slot );
+en50221_mmi_object_t *en50221_GetMMIObject( cam_t *, unsigned i_slot );
+void en50221_SendMMIObject( cam_t *, unsigned i_slot, en50221_mmi_object_t * );
+void en50221_End( cam_t * );
+
+char *dvbsi_to_utf8( const char *psz_instring, size_t i_length );

modules/access/dvb/http.c

@@ -242,7 +242,7 @@ static int HttpCallback( httpd_file_sys_t *p_args,
     p_sys->i_httpd_timeout = mdate() + INT64_C(3000000); /* 3 s */
     p_sys->psz_request = psz_request;
     p_sys->b_request_frontend_info = true;
-    if ( p_sys->i_ca_handle )
+    if ( p_sys->cam.fd != -1 )
     {
         p_sys->b_request_mmi_info = true;
     }

modules/access/dvb/linux_dvb.c

@@ -1462,11 +1462,13 @@ void DVRClose( access_t * p_access )
  *****************************************************************************/
 int CAMOpen( access_t *p_access )
 {
-    access_sys_t *p_sys = p_access->p_sys;
+    cam_t *p_cam = &p_access->p_sys->cam;
     char ca[128];
     int i_adapter, i_device;
     ca_caps_t caps;
 
+    p_cam->obj = VLC_OBJECT(p_access);
+
     i_adapter = var_GetInteger( p_access, "dvb-adapter" );
     i_device = var_GetInteger( p_access, "dvb-device" );
 
@@ -1478,19 +1480,17 @@ int CAMOpen( access_t *p_access )
     memset( &caps, 0, sizeof( ca_caps_t ));
 
     msg_Dbg( p_access, "Opening device %s", ca );
-    if( (p_sys->i_ca_handle = vlc_open(ca, O_RDWR | O_NONBLOCK)) < 0 )
+    p_cam->fd = vlc_open(ca, O_RDWR | O_NONBLOCK);
+    if( p_cam->fd == -1 )
     {
         msg_Warn( p_access, "CAMInit: opening CAM device failed (%m)" );
-        p_sys->i_ca_handle = 0;
         return VLC_EGENERIC;
     }
 
-    if ( ioctl( p_sys->i_ca_handle, CA_GET_CAP, &caps ) != 0 )
+    if ( ioctl( p_cam->fd, CA_GET_CAP, &caps ) < 0 )
     {
         msg_Err( p_access, "CAMInit: ioctl() error getting CAM capabilities" );
-        close( p_sys->i_ca_handle );
-        p_sys->i_ca_handle = 0;
-        return VLC_EGENERIC;
+        goto error;
     }
 
     /* Output CA capabilities */
@@ -1519,35 +1519,35 @@ int CAMOpen( access_t *p_access )
     if ( caps.slot_num == 0 )
     {
         msg_Err( p_access, "CAMInit: CAM module with no slots" );
-        close( p_sys->i_ca_handle );
-        p_sys->i_ca_handle = 0;
-        return VLC_EGENERIC;
+        goto error;
     }
 
     if( caps.slot_type & CA_CI_LINK )
     {
-        p_sys->i_ca_type = CA_CI_LINK;
+        p_cam->i_ca_type = CA_CI_LINK;
     }
     else if( caps.slot_type & CA_CI )
     {
-        p_sys->i_ca_type = CA_CI;
+        p_cam->i_ca_type = CA_CI;
     }
     else
     {
-        p_sys->i_ca_type = -1;
+        p_cam->i_ca_type = -1;
         msg_Err( p_access, "CAMInit: incompatible CAM interface" );
-        close( p_sys->i_ca_handle );
-        p_sys->i_ca_handle = 0;
-        return VLC_EGENERIC;
+        goto error;
     }
 
-    p_sys->i_nb_slots = caps.slot_num;
-    memset( p_sys->pb_active_slot, 0, sizeof(bool) * MAX_CI_SLOTS );
-    memset( p_sys->pb_slot_mmi_expected, 0, sizeof(bool) * MAX_CI_SLOTS );
-    memset( p_sys->pb_slot_mmi_undisplayed, 0,
+    p_cam->i_nb_slots = caps.slot_num;
+    memset( p_cam->pb_active_slot, 0, sizeof(bool) * MAX_CI_SLOTS );
+    memset( p_cam->pb_slot_mmi_expected, 0, sizeof(bool) * MAX_CI_SLOTS );
+    memset( p_cam->pb_slot_mmi_undisplayed, 0,
             sizeof(bool) * MAX_CI_SLOTS );
 
-    return en50221_Init( p_access );
+    return en50221_Init( p_cam );
+error:
+    close( p_cam->fd );
+    p_cam->fd = -1;
+    return VLC_EGENERIC;
 }
 
 /*****************************************************************************
@@ -1555,28 +1555,25 @@ int CAMOpen( access_t *p_access )
  *****************************************************************************/
 int CAMPoll( access_t * p_access )
 {
-    access_sys_t *p_sys = p_access->p_sys;
-    int i_ret = VLC_EGENERIC;
+    cam_t *p_cam = &p_access->p_sys->cam;
 
-    if ( p_sys->i_ca_handle == 0 )
-    {
+    if ( p_cam->fd == -1 )
         return VLC_EGENERIC;
-    }
 
-    switch( p_sys->i_ca_type )
+    switch( p_cam->i_ca_type )
     {
     case CA_CI_LINK:
-        i_ret = en50221_Poll( p_access );
-        break;
+        if ( mdate() > p_cam->i_next_event )
+        {
+            int ret = en50221_Poll( p_cam );
+            p_cam->i_next_event = mdate() + p_cam->i_timeout;
+            return ret;
+        }
     case CA_CI:
-        i_ret = VLC_SUCCESS;
-        break;
-    default:
-        msg_Err( p_access, "CAMPoll: This should not happen" );
-        break;
+        return VLC_SUCCESS;
     }
-
-    return i_ret;
+    msg_Err( p_access, "CAMPoll: This should not happen" );
+    return VLC_EGENERIC;;
 }
 
 #ifdef ENABLE_HTTPD
@@ -1586,17 +1583,18 @@ int CAMPoll( access_t * p_access )
 void CAMStatus( access_t * p_access )
 {
     access_sys_t *p_sys = p_access->p_sys;
+    cam_t *p_cam = &p_sys->cam;
     char *p;
     ca_caps_t caps;
-    int i_slot, i;
+    int i;
 
     if ( p_sys->psz_request != NULL && *p_sys->psz_request )
     {
         /* Check if we have an undisplayed MMI message : in that case we ignore
          * the user input to avoid confusing the CAM. */
-        for ( i_slot = 0; i_slot < p_sys->i_nb_slots; i_slot++ )
+        for ( unsigned i_slot = 0; i_slot < p_cam->i_nb_slots; i_slot++ )
         {
-            if ( p_sys->pb_slot_mmi_undisplayed[i_slot] == true )
+            if ( p_cam->pb_slot_mmi_undisplayed[i_slot] == true )
             {
                 p_sys->psz_request = NULL;
                 msg_Dbg( p_access,
@@ -1628,14 +1626,14 @@ void CAMStatus( access_t * p_access )
         if ( HTTPExtractValue( psz_request, "open", psz_value,
                                    sizeof(psz_value) ) != NULL )
         {
-            en50221_OpenMMI( p_access, i_slot );
+            en50221_OpenMMI( p_cam, i_slot );
             return;
         }
 
         if ( HTTPExtractValue( psz_request, "close", psz_value,
                                    sizeof(psz_value) ) != NULL )
         {
-            en50221_CloseMMI( p_access, i_slot );
+            en50221_CloseMMI( p_cam, i_slot );
             return;
         }
 
@@ -1689,20 +1687,20 @@ void CAMStatus( access_t * p_access )
             }
         }
 
-        en50221_SendMMIObject( p_access, i_slot, &mmi_object );
+        en50221_SendMMIObject( p_cam, i_slot, &mmi_object );
         return;
     }
 
     /* Check that we have all necessary MMI information. */
-    for ( i_slot = 0; i_slot < p_sys->i_nb_slots; i_slot++ )
+    for( unsigned i_slot = 0; i_slot < p_cam->i_nb_slots; i_slot++ )
     {
-        if ( p_sys->pb_slot_mmi_expected[i_slot] == true )
+        if ( p_cam->pb_slot_mmi_expected[i_slot] == true )
             return;
     }
 
     p = p_sys->psz_mmi_info = malloc( 10000 );
 
-    if ( ioctl( p_sys->i_ca_handle, CA_GET_CAP, &caps ) != 0 )
+    if ( ioctl( p_cam->fd, CA_GET_CAP, &caps ) != 0 )
     {
         char buf[1000];
         strerror_r( errno, buf, sizeof( buf ) );
@@ -1737,15 +1735,15 @@ void CAMStatus( access_t * p_access )
 
     p += sprintf( p, "</table>" );
 
-    for ( i_slot = 0; i_slot < p_sys->i_nb_slots; i_slot++ )
+    for( unsigned i_slot = 0; i_slot < p_cam->i_nb_slots; i_slot++ )
     {
         ca_slot_info_t sinfo;
 
-        p_sys->pb_slot_mmi_undisplayed[i_slot] = false;
+        p_cam->pb_slot_mmi_undisplayed[i_slot] = false;
         p += sprintf( p, "<p>CA slot #%d: ", i_slot );
 
         sinfo.num = i_slot;
-        if ( ioctl( p_sys->i_ca_handle, CA_GET_SLOT_INFO, &sinfo ) != 0 )
+        if ( ioctl( p_cam->fd, CA_GET_SLOT_INFO, &sinfo ) != 0 )
         {
             char buf[1000];
             strerror_r( errno, buf, sizeof( buf ) );
@@ -1764,8 +1762,8 @@ void CAMStatus( access_t * p_access )
 
         if ( sinfo.flags & CA_CI_MODULE_READY )
         {
-            en50221_mmi_object_t *p_object = en50221_GetMMIObject( p_access,
-                                                                       i_slot );
+            en50221_mmi_object_t *p_object = en50221_GetMMIObject( p_cam,
+                                                                      i_slot );
 
             p += sprintf( p, "module present and ready<p>\n" );
             p += sprintf( p, "<form action=index.html method=get>\n" );
@@ -1845,15 +1843,15 @@ out:
  *****************************************************************************/
 int CAMSet( access_t * p_access, dvbpsi_pmt_t *p_pmt )
 {
-    access_sys_t *p_sys = p_access->p_sys;
+    cam_t *p_cam = &p_access->p_sys->cam;
 
-    if( p_sys->i_ca_handle == 0 )
+    if( p_cam->fd == -1 )
     {
         dvbpsi_DeletePMT( p_pmt );
         return VLC_EGENERIC;
     }
 
-    en50221_SetCAPMT( p_access, p_pmt );
+    en50221_SetCAPMT( p_cam, p_pmt );
 
     return VLC_SUCCESS;
 }
@@ -1863,13 +1861,11 @@ int CAMSet( access_t * p_access, dvbpsi_pmt_t *p_pmt )
  *****************************************************************************/
 void CAMClose( access_t * p_access )
 {
-    access_sys_t *p_sys = p_access->p_sys;
+    cam_t *p_cam = &p_access->p_sys->cam;
 
-    en50221_End( p_access );
+    if ( p_cam->fd == -1 )
+         return;
 
-    if ( p_sys->i_ca_handle )
-    {
-        close( p_sys->i_ca_handle );
-    }
+    en50221_End( p_cam );
+    close( p_cam->fd );
 }
-