void video_manager::create_snapshot_bitmap(device_t *screen)
{
// select the appropriate view in our dummy target
if (m_snap_native && screen != NULL)
{
int view_index = machine().devicelist().indexof(SCREEN, screen->tag());
assert(view_index != -1);
m_snap_target->set_view(view_index);
}
// get the minimum width/height and set it on the target
INT32 width = m_snap_width;
INT32 height = m_snap_height;
if (width == 0 || height == 0)
m_snap_target->compute_minimum_size(width, height);
m_snap_target->set_bounds(width, height);
// if we don't have a bitmap, or if it's not the right size, allocate a new one
if (m_snap_bitmap == NULL || width != m_snap_bitmap->width || height != m_snap_bitmap->height)
{
if (m_snap_bitmap != NULL)
auto_free(machine(), m_snap_bitmap);
m_snap_bitmap = auto_alloc(machine(), bitmap_t(width, height, BITMAP_FORMAT_RGB32));
}
// render the screen there
render_primitive_list &primlist = m_snap_target->get_primitives();
primlist.acquire_lock();
rgb888_draw_primitives(primlist, m_snap_bitmap->base, width, height, m_snap_bitmap->rowpixels);
primlist.release_lock();
}
static void save_frame_with(mame_file *fp, int scrnum, png_error (*write_handler)(mame_file *, mame_bitmap *))
{
const render_primitive_list *primlist;
INT32 width, height;
int error;
assert(scrnum >= 0 && scrnum < MAX_SCREENS);
/* if no screens, do nothing */
if (snap_target == NULL)
return;
/* select the appropriate view in our dummy target */
render_target_set_view(snap_target, scrnum);
/* get the minimum width/height and set it on the target */
render_target_get_minimum_size(snap_target, &width, &height);
render_target_set_bounds(snap_target, width, height, 0);
/* if we don't have a bitmap, or if it's not the right size, allocate a new one */
if (snap_bitmap == NULL || width != snap_bitmap->width || height != snap_bitmap->height)
{
if (snap_bitmap != NULL)
bitmap_free(snap_bitmap);
snap_bitmap = bitmap_alloc_format(width, height, BITMAP_FORMAT_RGB32);
assert(snap_bitmap != NULL);
}
/* render the screen there */
primlist = render_target_get_primitives(snap_target);
osd_lock_acquire(primlist->lock);
rgb888_draw_primitives(primlist->head, snap_bitmap->base, width, height, snap_bitmap->rowpixels);
osd_lock_release(primlist->lock);
/* now do the actual work */
error = (*write_handler)(fp, snap_bitmap);
}
