本文整理汇总了C++中device_image_interface::is_writable方法的典型用法代码示例。如果您正苦于以下问题：C++ device_image_interface::is_writable方法的具体用法？C++ device_image_interface::is_writable怎么用？C++ device_image_interface::is_writable使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类device_image_interface的用法示例。
在下文中一共展示了device_image_interface::is_writable方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: atari_load_proc
static void atari_load_proc(device_image_interface &image)
{
atari_fdc_t *fdc = get_safe_token(image.device().owner());
int id = floppy_get_drive(image);
int size, i;
const char *ext;
fdc->drv[id].image = (UINT8*)image.image_malloc(MAXSIZE);
if (!fdc->drv[id].image)
return;
/* tell whether the image is writable */
fdc->drv[id].mode = image.is_writable();
/* set up image if it has been created */
if (image.has_been_created())
{
int sector;
char buff[256];
memset(buff, 0, sizeof(buff));
/* default to 720 sectors */
for( sector = 0; sector < 720; sector++ )
image.fwrite(buff, 256);
image.fseek(0, SEEK_SET);
}
size = image.fread(fdc->drv[id].image, MAXSIZE);
if( size <= 0 )
{
fdc->drv[id].image = NULL;
return;
}
/* re allocate the buffer; we don't want to be too lazy ;) */
fdc->drv[id].image = (UINT8*)image.image_realloc(fdc->drv[id].image, size);
ext = image.filetype();
/* no extension: assume XFD format (no header) */
if (!ext)
{
fdc->drv[id].type = FORMAT_XFD;
fdc->drv[id].header_skip = 0;
}
else
/* XFD extension */
if( toupper(ext[0])=='X' && toupper(ext[1])=='F' && toupper(ext[2])=='D' )
{
fdc->drv[id].type = FORMAT_XFD;
fdc->drv[id].header_skip = 0;
}
else
/* ATR extension */
if( toupper(ext[0])=='A' && toupper(ext[1])=='T' && toupper(ext[2])=='R' )
{
fdc->drv[id].type = FORMAT_ATR;
fdc->drv[id].header_skip = 16;
}
else
/* DSK extension */
if( toupper(ext[0])=='D' && toupper(ext[1])=='S' && toupper(ext[2])=='K' )
{
fdc->drv[id].type = FORMAT_DSK;
fdc->drv[id].header_skip = sizeof(dsk_format);
}
else
{
fdc->drv[id].type = FORMAT_XFD;
fdc->drv[id].header_skip = 0;
}
if( fdc->drv[id].type == FORMAT_ATR &&
(fdc->drv[id].image[0] != 0x96 || fdc->drv[id].image[1] != 0x02) )
{
fdc->drv[id].type = FORMAT_XFD;
fdc->drv[id].header_skip = 0;
}
switch (fdc->drv[id].type)
{
/* XFD or unknown format: find a matching size from the table */
case FORMAT_XFD:
for( i = 0; xfd_formats[i].size; i++ )
{
if( size == xfd_formats[i].size )
{
fdc->drv[id].density = xfd_formats[i].dsk.density;
fdc->drv[id].tracks = xfd_formats[i].dsk.tracks;
fdc->drv[id].spt = xfd_formats[i].dsk.spt;
fdc->drv[id].heads = (xfd_formats[i].dsk.doublesided) ? 2 : 1;
fdc->drv[id].bseclen = 128;
fdc->drv[id].seclen = 256 * xfd_formats[i].dsk.seclen_hi + xfd_formats[i].dsk.seclen_lo;
fdc->drv[id].sectors = fdc->drv[id].tracks * fdc->drv[id].heads * fdc->drv[id].spt;
break;
}
}
break;
/* ATR format: find a size including the 16 bytes header */
case FORMAT_ATR:
{
int s;
fdc->drv[id].bseclen = 128;
//.........这里部分代码省略.........