ioctl(fbdev->fd, FBIO_WAITFORVSYNC, &arg);
}
-/* it is recommended to call vout_fbdev_clear() before this */
void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
- int left_border, int right_border, int top_border, int bottom_border, int buffer_cnt)
+ int left_border, int right_border, int top_border, int bottom_border,
+ int buffer_cnt, int first_write_to_front)
{
int w_total = left_border + w + right_border;
int h_total = top_border + h + bottom_border;
fbdev->fbvar_new.nonstd = 0; // can set YUV here on omapfb
fbdev->buffer_count = buffer_cnt;
fbdev->buffer_write = buffer_cnt > 1 ? 1 : 0;
-
- // seems to help a bit to avoid glitches
- vout_fbdev_wait_vsync(fbdev);
+ if (first_write_to_front)
+ fbdev->buffer_write = 0;
ret = ioctl(fbdev->fd, FBIOPUT_VSCREENINFO, &fbdev->fbvar_new);
if (ret == -1) {
"multibuffering disabled\n");
}
+ // omap is still using the old mode until vsync,
+ // if the caller starts to write now we may get garbage on screen
+ vout_fbdev_wait_vsync(fbdev);
}
fbdev->fb_size = w_total * h_total * bpp / 8;
void vout_fbdev_clear(struct vout_fbdev *fbdev)
{
- memset(fbdev->mem, 0, fbdev->mem_size);
+ if (fbdev->mem)
+ memset(fbdev->mem, 0, fbdev->fb_size * fbdev->buffer_count);
}
void vout_fbdev_clear_lines(struct vout_fbdev *fbdev, int y, int count)
if (*h != 0)
req_h = *h;
- pret = vout_fbdev_resize(fbdev, req_w, req_h, bpp, 0, 0, 0, 0, buffer_cnt);
+ pret = vout_fbdev_resize(fbdev, req_w, req_h, bpp, 0, 0, 0, 0, buffer_cnt, 0);
if (pret == NULL)
goto fail;
void vout_fbdev_wait_vsync(struct vout_fbdev *fbdev);
void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
int left_border, int right_border, int top_border, int bottom_border,
- int buffer_count);
+ int buffer_cnt, int first_write_to_front);
void vout_fbdev_clear(struct vout_fbdev *fbdev);
void vout_fbdev_clear_lines(struct vout_fbdev *fbdev, int y, int count);
int vout_fbdev_get_fd(struct vout_fbdev *fbdev);
|| plat_target.vout_method == vout_mode_overlay2x) {
int W = plat_target.vout_method == vout_mode_overlay2x && w < 640 ? 2*w : w;
plat_sdl_overlay = SDL_CreateYUVOverlay(W, h, SDL_UYVY_OVERLAY, plat_sdl_screen);
- if (plat_sdl_overlay != NULL) {
- SDL_LockYUVOverlay(plat_sdl_overlay);
+ if (plat_sdl_overlay != NULL && SDL_LockYUVOverlay(plat_sdl_overlay) == 0) {
if ((long)plat_sdl_overlay->pixels[0] & 3)
fprintf(stderr, "warning: overlay pointer is unaligned\n");
plat_sdl_overlay_clear();
+
SDL_UnlockYUVOverlay(plat_sdl_overlay);
}
else {