C++ (Cpp) read_xms_store Examples

Example #1

File: jmemdos.c Project: deepmatrix/blaxxun-cc3d

write_xms_store (j_common_ptr cinfo, backing_store_ptr info,
		 void FAR * buffer_address,
		 long file_offset, long byte_count)
{
  XMScontext ctx;
  XMSspec spec;
  char endbuffer[2];

  /* The XMS driver can't cope with an odd length, so handle the last byte
   * specially if byte_count is odd.  We don't expect this to be common.
   */

  spec.length = byte_count & (~ 1L);
  spec.src_handle = 0;
  spec.src.ptr = buffer_address;
  spec.dst_handle = info->handle.xms_handle;
  spec.dst.offset = file_offset;

  ctx.ds_si = (void far *) & spec;
  ctx.ax = 0x0b00;		/* EMB move */
  jxms_calldriver(xms_driver, (XMScontext far *) & ctx);
  if (ctx.ax != 1)
    ERREXIT(cinfo, JERR_XMS_WRITE);

  if (ODD(byte_count)) {
    read_xms_store(cinfo, info, (void FAR *) endbuffer,
		   file_offset + byte_count - 1L, 2L);
    endbuffer[0] = ((char FAR *) buffer_address)[byte_count - 1L];
    write_xms_store(cinfo, info, (void FAR *) endbuffer,
		    file_offset + byte_count - 1L, 2L);
  }
}

Example #2

File: jmemdos.c Project: OS2World/APP-GRAPHICS-X11-XLOADIMAGE

METHODDEF void
read_xms_store (backing_store_ptr info, void FAR * buffer_address,
		long file_offset, long byte_count)
{
  XMScontext ctx;
  XMSspec spec;
  char endbuffer[2];

  /* The XMS driver can't cope with an odd length, so handle the last byte
   * specially if byte_count is odd.  We don't expect this to be common.
   */

  spec.length = byte_count & (~ 1L);
  spec.src_handle = info->handle.xms_handle;
  spec.src.offset = file_offset;
  spec.dst_handle = 0;
  spec.dst.ptr = buffer_address;
  
  ctx.ds_si = (void far *) & spec;
  ctx.ax = 0x0b00;		/* EMB move */
  jxms_calldriver(xms_driver, (XMScontext far *) & ctx);
  if (ctx.ax != 1)
    ERREXIT(methods, "read from extended memory failed");

  if (ODD(byte_count)) {
    read_xms_store(info, (void FAR *) endbuffer,
		   file_offset + byte_count - 1L, 2L);
    ((char FAR *) buffer_address)[byte_count - 1L] = endbuffer[0];
  }
}