/*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "config.h"
#include "file.h"
+#include "log.h"
+#include "mem.h"
#include <fcntl.h>
#include <sys/stat.h>
+#if HAVE_UNISTD_H
#include <unistd.h>
+#endif
+#if HAVE_IO_H
+#include <io.h>
+#endif
#if HAVE_MMAP
#include <sys/mman.h>
+#elif HAVE_MAPVIEWOFFILE
+#include <windows.h>
#endif
typedef struct {
av_unused void *ptr;
off_t off_size;
char errbuf[128];
- size_t max_size = HAVE_MMAP ? SIZE_MAX : FF_INTERNAL_MEM_TYPE_MAX_VALUE;
*bufptr = NULL;
if (fd < 0) {
}
off_size = st.st_size;
- if (off_size > max_size) {
+ if (off_size > SIZE_MAX) {
av_log(&file_log_ctx, AV_LOG_ERROR,
"File size for file '%s' is too big\n", filename);
close(fd);
#if HAVE_MMAP
ptr = mmap(NULL, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
- if ((int)(ptr) == -1) {
+ if (ptr == MAP_FAILED) {
err = AVERROR(errno);
av_strerror(err, errbuf, sizeof(errbuf));
av_log(&file_log_ctx, AV_LOG_ERROR, "Error occurred in mmap(): %s\n", errbuf);
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) {
{
#if HAVE_MMAP
munmap(bufptr, size);
+#elif HAVE_MAPVIEWOFFILE
+ UnmapViewOfFile(bufptr);
#else
av_free(bufptr);
#endif
}
-
-#ifdef TEST
-
-#undef printf
-
-int main(void)
-{
- uint8_t *buf;
- size_t size;
- if (av_file_map("file.c", &buf, &size, 0, NULL) < 0)
- return 1;
-
- buf[0] = 's';
- printf("%s", buf);
- av_file_unmap(buf, size);
- return 0;
-}
-#endif