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authorDaniel Verkamp <daniel@drv.nu>2011-01-05 05:16:33 +0000
committerDaniel Verkamp <daniel@drv.nu>2011-01-05 05:16:33 +0000
commit73f6d31e6c87150bab6a5cea36eb794c3e26535b (patch)
treef4fb2cc45d289acbbe74b2499895e8641bccbec3 /libavutil/file.c
parentdb61329607c858f95cd7e4c165897dcd39f82977 (diff)
downloadffmpeg-73f6d31e6c87150bab6a5cea36eb794c3e26535b.tar.gz
Win32 support for av_file_map()
Originally committed as revision 26221 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavutil/file.c')
-rw-r--r--libavutil/file.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/libavutil/file.c b/libavutil/file.c
index 1ccb692f92..c79f68aab3 100644
--- a/libavutil/file.c
+++ b/libavutil/file.c
@@ -22,6 +22,9 @@
#include <unistd.h>
#if HAVE_MMAP
#include <sys/mman.h>
+#elif HAVE_MAPVIEWOFFILE
+#include <io.h>
+#include <windows.h>
#endif
typedef struct {
@@ -81,6 +84,27 @@ int av_file_map(const char *filename, uint8_t **bufptr, size_t *size,
return err;
}
*bufptr = ptr;
+#elif HAVE_MAPVIEWOFFILE
+ {
+ HANDLE mh, fh = (HANDLE)_get_osfhandle(fd);
+
+ mh = CreateFileMapping(fh, NULL, PAGE_READONLY, 0, 0, NULL);
+ if (!mh) {
+ av_log(&file_log_ctx, AV_LOG_ERROR, "Error occurred in CreateFileMapping()\n");
+ close(fd);
+ return -1;
+ }
+
+ ptr = MapViewOfFile(mh, FILE_MAP_READ, 0, 0, *size);
+ CloseHandle(mh);
+ if (!ptr) {
+ av_log(&file_log_ctx, AV_LOG_ERROR, "Error occurred in MapViewOfFile()\n");
+ close(fd);
+ return -1;
+ }
+
+ *bufptr = ptr;
+ }
#else
*bufptr = av_malloc(*size);
if (!*bufptr) {
@@ -99,6 +123,8 @@ void av_file_unmap(uint8_t *bufptr, size_t size)
{
#if HAVE_MMAP
munmap(bufptr, size);
+#elif HAVE_MAPVIEWOFFILE
+ UnmapViewOfFile(bufptr);
#else
av_free(bufptr);
#endif