[libdvdcss-devel] win32: Use proper handle instead of file descriptor to access devices
Diego Biurrun
git at videolan.org
Sun Nov 16 22:53:02 CET 2014
libdvdcss | branch: master | Diego Biurrun <diego at biurrun.de> | Sun Nov 16 18:36:39 2014 +0100| [1b4e3f9e1c4e7b53cce59b802f95f6400ba641dd] | committer: Diego Biurrun
win32: Use proper handle instead of file descriptor to access devices
This also allows simplifying the Windows init code.
> http://git.videolan.org/gitweb.cgi/libdvdcss.git/?a=commit;h=1b4e3f9e1c4e7b53cce59b802f95f6400ba641dd
---
src/device.c | 60 +++++++++++++++++++++++--------------------------------
src/libdvdcss.h | 7 ++++++-
2 files changed, 31 insertions(+), 36 deletions(-)
diff --git a/src/device.c b/src/device.c
index 6148f4a..da4ecc4 100644
--- a/src/device.c
+++ b/src/device.c
@@ -92,7 +92,7 @@ static int os2_open ( dvdcss_t, const char * );
int dvdcss_use_ioctls( dvdcss_t dvdcss )
{
#if defined( WIN32 )
- if( dvdcss->b_file )
+ if( dvdcss->p_handle )
{
return 0;
}
@@ -344,38 +344,32 @@ int dvdcss_open_device ( dvdcss_t dvdcss )
print_debug( dvdcss, "opening target `%s'", psz_device );
#if defined( WIN32 )
- dvdcss->b_file = 1;
- /* If device is "X:" or "X:\", we are not actually opening a file. */
- if (psz_device[0] && psz_device[1] == ':' &&
- (!psz_device[2] || (psz_device[2] == '\\' && !psz_device[3])))
- dvdcss->b_file = 0;
-
- /* Initialize readv temporary buffer */
+ dvdcss->p_handle = NULL;
dvdcss->p_readv_buffer = NULL;
dvdcss->i_readv_buf_size = 0;
+#endif /* defined( WIN32 ) */
- if( !dvdcss->b_file )
+#if defined( WIN32 ) || defined( __OS2__ )
+ /* If device is "X:" or "X:\", we are not actually opening a file. */
+ if( psz_device[0] && psz_device[1] == ':' &&
+ ( !psz_device[2] || ( psz_device[2] == '\\' && !psz_device[3] ) ) )
{
+#if defined( WIN32 )
print_debug( dvdcss, "using Win2K API for access" );
dvdcss->pf_seek = win2k_seek;
dvdcss->pf_read = win2k_read;
dvdcss->pf_readv = win2k_readv;
return win2k_open( dvdcss, psz_device );
- }
- else
#elif defined( __OS2__ )
- /* If device is "X:" or "X:\", we are not actually opening a file. */
- if( psz_device[0] && psz_device[1] == ':' &&
- ( !psz_device[2] || ( psz_device[2] == '\\' && !psz_device[3] ) ) )
- {
print_debug( dvdcss, "using OS/2 API for access" );
dvdcss->pf_seek = libc_seek;
dvdcss->pf_read = libc_read;
dvdcss->pf_readv = libc_readv;
return os2_open( dvdcss, psz_device );
+#endif /* ! ( defined( WIN32 ) || defined( __OS2__ ) ) */
}
else
-#endif
+#endif /* defined( WIN32 ) || defined( __OS2__ ) */
{
print_debug( dvdcss, "using libc for access" );
dvdcss->pf_seek = libc_seek;
@@ -393,9 +387,9 @@ int dvdcss_close_device ( dvdcss_t dvdcss )
dvdcss->p_readv_buffer = NULL;
dvdcss->i_readv_buf_size = 0;
- if( !dvdcss->b_file )
+ if( dvdcss->p_handle )
{
- CloseHandle( (HANDLE) dvdcss->i_fd );
+ CloseHandle( dvdcss->p_handle );
}
else
#endif
@@ -445,19 +439,17 @@ static int win2k_open ( dvdcss_t dvdcss, const char *psz_device )
* won't send back the right result).
* (See Microsoft Q241374: Read and Write Access Required for SCSI
* Pass Through Requests) */
- dvdcss->i_fd = (int)
- CreateFile( psz_dvd, GENERIC_READ | GENERIC_WRITE,
- FILE_SHARE_READ | FILE_SHARE_WRITE,
- NULL, OPEN_EXISTING,
- FILE_FLAG_RANDOM_ACCESS, NULL );
+ dvdcss->p_handle = CreateFile( psz_dvd, GENERIC_READ | GENERIC_WRITE,
+ FILE_SHARE_READ | FILE_SHARE_WRITE,
+ NULL, OPEN_EXISTING,
+ FILE_FLAG_RANDOM_ACCESS, NULL );
- if( (HANDLE) dvdcss->i_fd == INVALID_HANDLE_VALUE )
- dvdcss->i_fd = (int)
- CreateFile( psz_dvd, GENERIC_READ, FILE_SHARE_READ,
- NULL, OPEN_EXISTING,
- FILE_FLAG_RANDOM_ACCESS, NULL );
+ if( dvdcss->p_handle == INVALID_HANDLE_VALUE )
+ dvdcss->p_handle = CreateFile( psz_dvd, GENERIC_READ, FILE_SHARE_READ,
+ NULL, OPEN_EXISTING,
+ FILE_FLAG_RANDOM_ACCESS, NULL );
- if( (HANDLE) dvdcss->i_fd == INVALID_HANDLE_VALUE )
+ if( dvdcss->p_handle == INVALID_HANDLE_VALUE )
{
print_error( dvdcss, "failed opening device" );
return -1;
@@ -541,8 +533,7 @@ static int win2k_seek( dvdcss_t dvdcss, int i_blocks )
li_seek.QuadPart = (LONGLONG)i_blocks * DVDCSS_BLOCK_SIZE;
- li_seek.LowPart = SetFilePointer( (HANDLE) dvdcss->i_fd,
- li_seek.LowPart,
+ li_seek.LowPart = SetFilePointer( dvdcss->p_handle, li_seek.LowPart,
&li_seek.HighPart, FILE_BEGIN );
if( (li_seek.LowPart == INVALID_SET_FILE_POINTER)
&& GetLastError() != NO_ERROR)
@@ -601,9 +592,8 @@ static int win2k_read ( dvdcss_t dvdcss, void *p_buffer, int i_blocks )
{
DWORD i_bytes;
- if( !ReadFile( (HANDLE) dvdcss->i_fd, p_buffer,
- i_blocks * DVDCSS_BLOCK_SIZE,
- &i_bytes, NULL ) )
+ if( !ReadFile( dvdcss->p_handle, p_buffer,i_blocks * DVDCSS_BLOCK_SIZE,
+ &i_bytes, NULL ) )
{
dvdcss->i_pos = -1;
return -1;
@@ -725,7 +715,7 @@ static int win2k_readv ( dvdcss_t dvdcss, const struct iovec *p_iovec,
if( i_blocks_total <= 0 ) return 0;
- if( !ReadFile( (HANDLE)dvdcss->i_fd, dvdcss->p_readv_buffer,
+ if( !ReadFile( dvdcss->p_handle, dvdcss->p_readv_buffer,
i_blocks_total, &i_bytes, NULL ) )
{
/* The read failed... too bad.
diff --git a/src/libdvdcss.h b/src/libdvdcss.h
index 31c15bc..5f6cb3e 100644
--- a/src/libdvdcss.h
+++ b/src/libdvdcss.h
@@ -26,6 +26,11 @@
#include <limits.h>
+#ifdef WIN32
+# include "config.h"
+# include <windows.h>
+#endif
+
#include "dvdcss/dvdcss.h"
#include "css.h"
#include "device.h"
@@ -70,7 +75,7 @@ struct dvdcss_s
int b_debug;
#ifdef WIN32
- int b_file;
+ HANDLE p_handle;
char * p_readv_buffer;
int i_readv_buf_size;
#endif /* WIN32 */
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