@@ -467,23 +467,12 @@ g2d_copy_with_scale(struct g2d_context *ctx, struct g2d_image *src,
{
union g2d_rop4_val rop4;
union g2d_point_val pt;
- unsigned int scale;
+ unsigned int scale, repeat_pad;
unsigned int scale_x, scale_y;
- g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_BGCOLOR);
- g2d_add_cmd(ctx, DST_COLOR_MODE_REG, dst->color_mode);
- g2d_add_base_addr(ctx, dst, g2d_dst);
- g2d_add_cmd(ctx, DST_STRIDE_REG, dst->stride);
-
- g2d_add_cmd(ctx, SRC_SELECT_REG, G2D_SELECT_MODE_NORMAL);
- g2d_add_cmd(ctx, SRC_COLOR_MODE_REG, src->color_mode);
-
- g2d_add_cmd(ctx, SRC_REPEAT_MODE_REG, src->repeat_mode);
- if (src->repeat_mode == G2D_REPEAT_MODE_PAD)
- g2d_add_cmd(ctx, SRC_PAD_VALUE_REG, dst->color);
-
- g2d_add_base_addr(ctx, src, g2d_src);
- g2d_add_cmd(ctx, SRC_STRIDE_REG, src->stride);
+ /* Sanitize this parameter to facilitate space computation below. */
+ if (negative)
+ negative = 1;
if (src_w == dst_w && src_h == dst_h)
scale = 0;
@@ -493,6 +482,8 @@ g2d_copy_with_scale(struct g2d_context *ctx, struct g2d_image *src,
scale_y = g2d_get_scaling(src_h, dst_h);
}
+ repeat_pad = src->repeat_mode == G2D_REPEAT_MODE_PAD ? 1 : 0;
+
if (src_x + src_w > src->width)
src_w = src->width - src_x;
if (src_y + src_h > src->height)
@@ -505,21 +496,37 @@ g2d_copy_with_scale(struct g2d_context *ctx, struct g2d_image *src,
if (src_w <= 0 || src_h <= 0 || dst_w <= 0 || dst_h <= 0) {
fprintf(stderr, "invalid width or height.\n");
- g2d_reset(ctx);
return -EINVAL;
}
+ if (g2d_check_space(ctx, 12 + scale * 3 + negative + repeat_pad, 2))
+ return -ENOSPC;
+
+ g2d_add_cmd(ctx, DST_SELECT_REG, G2D_SELECT_MODE_BGCOLOR);
+ g2d_add_cmd(ctx, DST_COLOR_MODE_REG, dst->color_mode);
+ g2d_add_base_addr(ctx, dst, g2d_dst);
+ g2d_add_cmd(ctx, DST_STRIDE_REG, dst->stride);
+
+ g2d_add_cmd(ctx, SRC_SELECT_REG, G2D_SELECT_MODE_NORMAL);
+ g2d_add_cmd(ctx, SRC_COLOR_MODE_REG, src->color_mode);
+
+ g2d_add_cmd(ctx, SRC_REPEAT_MODE_REG, src->repeat_mode);
+ if (repeat_pad)
+ g2d_add_cmd(ctx, SRC_PAD_VALUE_REG, dst->color);
+
+ g2d_add_base_addr(ctx, src, g2d_src);
+ g2d_add_cmd(ctx, SRC_STRIDE_REG, src->stride);
+
+ rop4.val = 0;
+ rop4.data.unmasked_rop3 = G2D_ROP3_SRC;
+
if (negative) {
g2d_add_cmd(ctx, BG_COLOR_REG, 0x00FFFFFF);
- rop4.val = 0;
- rop4.data.unmasked_rop3 = G2D_ROP3_SRC^G2D_ROP3_DST;
- g2d_add_cmd(ctx, ROP4_REG, rop4.val);
- } else {
- rop4.val = 0;
- rop4.data.unmasked_rop3 = G2D_ROP3_SRC;
- g2d_add_cmd(ctx, ROP4_REG, rop4.val);
+ rop4.data.unmasked_rop3 ^= G2D_ROP3_DST;
}
+ g2d_add_cmd(ctx, ROP4_REG, rop4.val);
+
if (scale) {
g2d_add_cmd(ctx, SRC_SCALE_CTRL_REG, G2D_SCALE_MODE_BILINEAR);
g2d_add_cmd(ctx, SRC_XSCALE_REG, scale_x);
Parameter validation goes to the top. Repeat mode is checked first to make computation of space easier. Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> --- exynos/exynos_fimg2d.c | 53 ++++++++++++++++++++++++++++---------------------- 1 file changed, 30 insertions(+), 23 deletions(-)