s32 b2r2_get_img_size(struct b2r2_blt_img *img)
{
if (b2r2_is_single_plane_fmt(img->fmt)) {
return (s32)b2r2_get_img_pitch(img) * img->height;
} else if (b2r2_is_ycbcrsp_fmt(img->fmt) ||
b2r2_is_ycbcrp_fmt(img->fmt)) {
s32 y_plane_size;
y_plane_size = (s32)b2r2_get_img_pitch(img) * img->height;
if (b2r2_is_ycbcr420_fmt(img->fmt)) {
return y_plane_size + y_plane_size / 2;
} else if (b2r2_is_ycbcr422_fmt(img->fmt)) {
return y_plane_size * 2;
} else if (b2r2_is_ycbcr444_fmt(img->fmt)) {
return y_plane_size * 3;
} else {
b2r2_log_err("%s: Internal error! "
"Format %#x not recognized.\n",
__func__, img->fmt);
return 0;
}
} else if (b2r2_is_mb_fmt(img->fmt)) {
return (img->width * img->height *
b2r2_get_fmt_bpp(img->fmt)) / 8;
} else {
b2r2_log_err("%s: Internal error! "
"Format %#x not recognized.\n",
__func__, img->fmt);
return 0;
}
}
static bool validate_img(struct device *dev,
struct b2r2_blt_img *img)
{
/*
* So that we always can do width * height * bpp without overflowing a
* 32 bit signed integer. isqrt(s32_max / max_bpp) was used to
* calculate the value.
*/
static const s32 max_img_width_height = 8191;
s32 img_size;
if (!is_valid_format(img->fmt)) {
b2r2_log_info(dev, "Validation Error: "
"!is_valid_format(img->fmt)\n");
return false;
}
if (img->width < 0 || img->width > max_img_width_height ||
img->height < 0 || img->height > max_img_width_height) {
b2r2_log_info(dev, "Validation Error: "
"img->width < 0 || "
"img->width > max_img_width_height || "
"img->height < 0 || "
"img->height > max_img_width_height\n");
return false;
}
if (b2r2_is_mb_fmt(img->fmt)) {
if (!is_complete_width_for_fmt(img->width, img->fmt)) {
b2r2_log_info(dev, "Validation Error: "
"!is_complete_width_for_fmt(img->width,"
" img->fmt)\n");
return false;
}
} else {
if (0 == img->pitch &&
(!is_aligned_width_for_fmt(img->width, img->fmt) ||
!is_complete_width_for_fmt(img->width, img->fmt))) {
b2r2_log_info(dev,
"Validation Error: "
"0 == img->pitch && "
"(!is_aligned_width_for_fmt(img->width,"
" img->fmt) || "
"!is_complete_width_for_fmt(img->width,"
" img->fmt))\n");
return false;
}
if (img->pitch != 0 &&
!is_valid_pitch_for_fmt(dev, img->pitch, img->width,
img->fmt)) {
b2r2_log_info(dev,
"Validation Error: "
"img->pitch != 0 && "
"!is_valid_pitch_for_fmt(dev, "
"img->pitch, img->width, img->fmt)\n");
return false;
}
}
if (!is_valid_height_for_fmt(img->width, img->fmt)) {
b2r2_log_info(dev, "Validation Error: "
"!is_valid_height_for_fmt(img->width, img->fmt)\n");
return false;
}
img_size = b2r2_get_img_size(dev, img);
/*
* To keep the entire image inside s32 range.
*/
if ((B2R2_BLT_PTR_HWMEM_BUF_NAME_OFFSET == img->buf.type ||
B2R2_BLT_PTR_FD_OFFSET == img->buf.type) &&
img->buf.offset > (u32)b2r2_s32_max - (u32)img_size) {
b2r2_log_info(dev, "Validation Error: "
"(B2R2_BLT_PTR_HWMEM_BUF_NAME_OFFSET == "
"img->buf.type || B2R2_BLT_PTR_FD_OFFSET == "
"img->buf.type) && img->buf.offset > "
"(u32)B2R2_MAX_S32 - (u32)img_size\n");
return false;
}
return true;
}
