-#ifdef HAVE_MMAP
-# define MMAP_SIZE (1 << 18)
-# ifndef MMAP_POPULATE
-# define MMAP_POPULATE 0
-# endif
-
-struct block_sys_t
-{
- block_t self;
- //vlc_object_t *owner;
- void *base_addr;
- size_t length;
-};
-
-static void mmapRelease (block_t *block)
-{
- block_sys_t *p_sys = (block_sys_t *)block;
-
- fprintf (stderr, "munmap (%p, %u)\n", p_sys->base_addr, MMAP_SIZE);
- munmap (p_sys->base_addr, p_sys->length);
- //vlc_object_release (p_sys->owner);
- free (p_sys);
-}
-
-static block_t *mmapBlock (access_t *p_access)
-{
- access_sys_t *p_sys = p_access->p_sys;
-
- const int flags = MAP_SHARED | MAP_POPULATE;
- const size_t pagesize = sysconf (_SC_PAGE_SIZE);
- off_t offset = p_access->info.i_pos & ~(pagesize - 1);
- size_t align = p_access->info.i_pos & (pagesize - 1);
- size_t length = (MMAP_SIZE > pagesize) ? MMAP_SIZE : pagesize;
- void *addr;
-
- /* File grown while being played? */
- if (offset + length >= p_access->info.i_size)
- {
- struct stat st;
-
- if ((fstat (p_sys->fd, &st) == 0)
- && (st.st_size > p_access->info.i_size))
- {
- p_access->info.i_size = st.st_size;
- p_access->info.i_update |= INPUT_UPDATE_SIZE;
- }
- }
-
- /* Really at end of file? */
- if (offset >= p_access->info.i_size)
- {
- p_access->info.b_eof = VLC_TRUE;
- msg_Dbg (p_access, "at end of memory mapped file");
- return NULL;
- }
-
- if (offset + length > p_access->info.i_size)
- length = p_access->info.i_size - offset;
-
- assert (length > 0);
-
- addr = mmap (NULL, length, PROT_READ, flags, p_sys->fd, offset);
- if (addr == MAP_FAILED)
- {
- msg_Err (p_access, "memory mapping failed: %m");
- msleep( INPUT_ERROR_SLEEP );
- return NULL;
- }
-
- p_access->info.i_pos += length;
-
- msg_Dbg (p_access, "mapped %lu bytes at %p from offset %lu",
- (unsigned long)length, addr, (unsigned long)offset);
- block_sys_t *block = malloc (sizeof (*block));
- if (block == NULL)
- {
- munmap (addr, length);
- return NULL;
- }
-
- block_Init (&block->self, ((uint8_t *)addr) + align, length - align);
- block->self.pf_release = mmapRelease;
- block->base_addr = addr;
- block->length = length;
- //vlc_object_yield (block->owner = VLC_OBJECT (p_access));
-
- return &block->self;
-}
-#endif