]> git.sesse.net Git - vlc/blobdiff - modules/access_output/file.c
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[vlc] / modules / access_output / file.c
index bd33c2256a55d3cdd7ad371efcfd52032640cc8e..f89d93ef5e2dded5a8666fa29754235130131152 100644 (file)
 /*****************************************************************************
  * Preamble
  *****************************************************************************/
-#include <stdlib.h>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
 #include <sys/types.h>
-#include <sys/stat.h>
-#include <string.h>
+#include <time.h>
 #include <fcntl.h>
 #include <errno.h>
 
-#include <vlc/vlc.h>
-#include <vlc/sout.h>
-#include "charset.h"
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_sout.h>
+#include <vlc_block.h>
+#include <vlc_fs.h>
+#include <vlc_strings.h>
 
-#ifdef HAVE_UNISTD_H
-#   include <unistd.h>
-#elif defined( WIN32 ) && !defined( UNDER_CE )
+#if defined( WIN32 ) && !defined( UNDER_CE )
+#   include <io.h>
+#   define lseek _lseeki64
+#elif defined( __OS2__ )
 #   include <io.h>
+#else
+#   include <unistd.h>
 #endif
 
-/* For those platforms that don't use these */
-#ifndef STDOUT_FILENO
-#   define STDOUT_FILENO 1
-#endif
 #ifndef O_LARGEFILE
 #   define O_LARGEFILE 0
 #endif
@@ -60,36 +65,41 @@ static void Close( vlc_object_t * );
 #define APPEND_TEXT N_("Append to file")
 #define APPEND_LONGTEXT N_( "Append to file if it exists instead " \
                             "of replacing it.")
-
-vlc_module_begin();
-    set_description( _("File stream output") );
-    set_shortname( N_("File" ));
-    set_capability( "sout access", 50 );
-    set_category( CAT_SOUT );
-    set_subcategory( SUBCAT_SOUT_ACO );
-    add_shortcut( "file" );
-    add_shortcut( "stream" );
-    add_bool( SOUT_CFG_PREFIX "append", 0, NULL, APPEND_TEXT,APPEND_LONGTEXT,
-              VLC_TRUE );
-    set_callbacks( Open, Close );
-vlc_module_end();
+#define SYNC_TEXT N_("Synchronous writing")
+#define SYNC_LONGTEXT N_( "Open the file with synchronous writing.")
+
+vlc_module_begin ()
+    set_description( N_("File stream output") )
+    set_shortname( N_("File" ))
+    set_capability( "sout access", 50 )
+    set_category( CAT_SOUT )
+    set_subcategory( SUBCAT_SOUT_ACO )
+    add_shortcut( "file", "stream", "fd" )
+    add_bool( SOUT_CFG_PREFIX "append", false, APPEND_TEXT,APPEND_LONGTEXT,
+              true )
+#ifdef O_SYNC
+    add_bool( SOUT_CFG_PREFIX "sync", false, SYNC_TEXT,SYNC_LONGTEXT,
+              false )
+#endif
+    set_callbacks( Open, Close )
+vlc_module_end ()
 
 
 /*****************************************************************************
  * Exported prototypes
  *****************************************************************************/
-static const char *ppsz_sout_options[] = {
-    "append", NULL
+static const char *const ppsz_sout_options[] = {
+    "append",
+#ifdef O_SYNC
+    "sync",
+#endif
+    NULL
 };
 
-static int Write( sout_access_out_t *, block_t * );
+static ssize_t Write( sout_access_out_t *, block_t * );
 static int Seek ( sout_access_out_t *, off_t  );
-static int Read ( sout_access_out_t *, block_t * );
-
-struct sout_access_out_sys_t
-{
-    int i_handle;
-};
+static ssize_t Read ( sout_access_out_t *, block_t * );
+static int Control( sout_access_out_t *, int, va_list );
 
 /*****************************************************************************
  * Open: open the file
@@ -97,60 +107,79 @@ struct sout_access_out_sys_t
 static int Open( vlc_object_t *p_this )
 {
     sout_access_out_t   *p_access = (sout_access_out_t*)p_this;
-    int                 i_flags;
-    vlc_value_t         val;
+    int                 fd;
 
-    sout_CfgParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
+    config_ChainParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
 
-    if( !p_access->psz_name )
+    if( !p_access->psz_path )
     {
         msg_Err( p_access, "no file name specified" );
         return VLC_EGENERIC;
     }
 
-    if( !( p_access->p_sys = malloc( sizeof( sout_access_out_sys_t ) ) ) )
-    {
-        return( VLC_ENOMEM );
-    }
+    bool append = var_GetBool( p_access, SOUT_CFG_PREFIX "append" );
 
-    i_flags = O_RDWR|O_CREAT|O_LARGEFILE;
-
-    var_Get( p_access, SOUT_CFG_PREFIX "append", &val );
-    i_flags |= val.b_bool ? O_APPEND : O_TRUNC;
+    if (!strcmp (p_access->psz_access, "fd"))
+    {
+        char *end;
 
-    if( !strcmp( p_access->psz_name, "-" ) )
+        fd = strtol (p_access->psz_path, &end, 0);
+        if (!*p_access->psz_path || *end)
+        {
+            msg_Err (p_access, "invalid file descriptor: %s",
+                     p_access->psz_path);
+            return VLC_EGENERIC;
+        }
+        fd = vlc_dup (fd);
+        if (fd == -1)
+        {
+            msg_Err (p_access, "cannot use file descriptor: %m");
+            return VLC_EGENERIC;
+        }
+    }
+#ifndef UNDER_CE
+    else
+    if( !strcmp( p_access->psz_path, "-" ) )
     {
-#if defined(WIN32)
-        setmode (STDOUT_FILENO, O_BINARY);
+#if defined( WIN32 ) || defined( __OS2__ )
+        setmode (fileno (stdout), O_BINARY);
 #endif
-        p_access->p_sys->i_handle = STDOUT_FILENO;
+        fd = vlc_dup (fileno (stdout));
+        if (fd == -1)
+        {
+            msg_Err (p_access, "cannot use standard output: %m");
+            return VLC_EGENERIC;
+        }
         msg_Dbg( p_access, "using stdout" );
     }
+#endif
     else
     {
-        const char *psz_localname = ToLocale( p_access->psz_name );
-        int fd = open( psz_localname, i_flags, 0666 );
-        LocaleFree( psz_localname );
+        char *psz_tmp = str_format( p_access, p_access->psz_path );
+        path_sanitize( psz_tmp );
 
-        if( fd == -1 )
+        fd = vlc_open( psz_tmp, O_RDWR | O_CREAT | O_LARGEFILE |
+#ifdef O_SYNC
+                (var_GetBool( p_access, SOUT_CFG_PREFIX "sync" ) ? O_SYNC : 0) |
+#endif
+                (append ? 0 : O_TRUNC), 0666 );
+        free( psz_tmp );
+        if (fd == -1)
         {
-            msg_Err( p_access, "cannot open `%s' (%s)", p_access->psz_name,
-                     strerror( errno ) );
-            free( p_access->p_sys );
-            return( VLC_EGENERIC );
+            msg_Err (p_access, "cannot create %s: %m", p_access->psz_path);
+            return VLC_EGENERIC;
         }
-        p_access->p_sys->i_handle = fd;
     }
 
     p_access->pf_write = Write;
     p_access->pf_read  = Read;
     p_access->pf_seek  = Seek;
+    p_access->pf_control = Control;
+    p_access->p_sys    = (void *)(intptr_t)fd;
 
-    msg_Dbg( p_access, "file access output opened (`%s')", p_access->psz_name );
-
-    /* Update pace control flag */
-    if( p_access->psz_access && !strcmp( p_access->psz_access, "stream" ) )
-        p_access->p_sout->i_out_pace_nocontrol++;
+    msg_Dbg( p_access, "file access output opened (%s)", p_access->psz_path );
+    if (append)
+        lseek (fd, 0, SEEK_END);
 
     return VLC_SUCCESS;
 }
@@ -162,55 +191,74 @@ static void Close( vlc_object_t * p_this )
 {
     sout_access_out_t *p_access = (sout_access_out_t*)p_this;
 
-    if( strcmp( p_access->psz_name, "-" ) )
+    close( (intptr_t)p_access->p_sys );
+
+    msg_Dbg( p_access, "file access output closed" );
+}
+
+static int Control( sout_access_out_t *p_access, int i_query, va_list args )
+{
+    switch( i_query )
     {
-        if( p_access->p_sys->i_handle )
+        case ACCESS_OUT_CONTROLS_PACE:
         {
-            close( p_access->p_sys->i_handle );
+            bool *pb = va_arg( args, bool * );
+            *pb = strcmp( p_access->psz_access, "stream" );
+            break;
         }
-    }
-    free( p_access->p_sys );
 
-    /* Update pace control flag */
-    if( p_access->psz_access && !strcmp( p_access->psz_access, "stream" ) )
-        p_access->p_sout->i_out_pace_nocontrol--;
-
-    msg_Dbg( p_access, "file access output closed" );
+        default:
+            return VLC_EGENERIC;
+    }
+    return VLC_SUCCESS;
 }
 
 /*****************************************************************************
  * Read: standard read on a file descriptor.
  *****************************************************************************/
-static int Read( sout_access_out_t *p_access, block_t *p_buffer )
+static ssize_t Read( sout_access_out_t *p_access, block_t *p_buffer )
 {
-    if( strcmp( p_access->psz_name, "-" ) )
-    {
-        return read( p_access->p_sys->i_handle, p_buffer->p_buffer,
-                     p_buffer->i_buffer );
-    }
+    ssize_t val;
 
-    msg_Err( p_access, "cannot read while using stdout" );
-    return VLC_EGENERIC;
+    do
+        val = read( (intptr_t)p_access->p_sys, p_buffer->p_buffer,
+                    p_buffer->i_buffer );
+    while (val == -1 && errno == EINTR);
+    return val;
 }
 
 /*****************************************************************************
  * Write: standard write on a file descriptor.
  *****************************************************************************/
-static int Write( sout_access_out_t *p_access, block_t *p_buffer )
+static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
 {
     size_t i_write = 0;
 
     while( p_buffer )
     {
-        block_t *p_next = p_buffer->p_next;;
-
-        i_write += write( p_access->p_sys->i_handle,
-                          p_buffer->p_buffer, p_buffer->i_buffer );
-        block_Release( p_buffer );
+        ssize_t val = write ((intptr_t)p_access->p_sys,
+                             p_buffer->p_buffer, p_buffer->i_buffer);
+        if (val == -1)
+        {
+            if (errno == EINTR)
+                continue;
+            block_ChainRelease (p_buffer);
+            return -1;
+        }
 
-        p_buffer = p_next;
+        if ((size_t)val >= p_buffer->i_buffer)
+        {
+            block_t *p_next = p_buffer->p_next;
+            block_Release (p_buffer);
+            p_buffer = p_next;
+        }
+        else
+        {
+            p_buffer->p_buffer += val;
+            p_buffer->i_buffer -= val;
+        }
+        i_write += val;
     }
-
     return i_write;
 }
 
@@ -219,17 +267,5 @@ static int Write( sout_access_out_t *p_access, block_t *p_buffer )
  *****************************************************************************/
 static int Seek( sout_access_out_t *p_access, off_t i_pos )
 {
-    if( strcmp( p_access->psz_name, "-" ) )
-    {
-#if defined( WIN32 ) && !defined( UNDER_CE )
-        return( _lseeki64( p_access->p_sys->i_handle, i_pos, SEEK_SET ) );
-#else
-        return( lseek( p_access->p_sys->i_handle, i_pos, SEEK_SET ) );
-#endif
-    }
-    else
-    {
-        msg_Err( p_access, "cannot seek while using stdout" );
-        return VLC_EGENERIC;
-    }
+    return lseek( (intptr_t)p_access->p_sys, i_pos, SEEK_SET );
 }