The jpeg_bound_align_image function needs to know the context
in which it is called, as it needs to align image dimensions in
a slight different manner for Exynos3250, which crops pixels for
specific values in case the format is RGB.
Signed-off-by: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/media/platform/s5p-jpeg/jpeg-core.c | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index df3aaa9..0854f37 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -1133,7 +1133,8 @@ static struct s5p_jpeg_fmt *s5p_jpeg_find_format(struct s5p_jpeg_ctx *ctx,
return NULL;
}
-static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
+static void jpeg_bound_align_image(struct s5p_jpeg_ctx *ctx,
+ u32 *w, unsigned int wmin, unsigned int wmax,
unsigned int walign,
u32 *h, unsigned int hmin, unsigned int hmax,
unsigned int halign)
@@ -1145,13 +1146,27 @@ static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
w_step = 1 << walign;
h_step = 1 << halign;
+
+ if (ctx->jpeg->variant->version == SJPEG_EXYNOS3250) {
+ /*
+ * Rightmost and bottommost pixels are cropped by the
+ * Exynos3250 JPEG IP for RGB formats, for the specific
+ * width and height values respectively. This assignment
+ * will result in v4l_bound_align_image returning dimensions
+ * reduced by 1 for the aforementioned cases.
+ */
+ if (w_step == 4 && ((width & 3) == 1)) {
+ wmax = width;
+ hmax = height;
+ }
+ }
+
v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 0);
if (*w < width && (*w + w_step) < wmax)
*w += w_step;
if (*h < height && (*h + h_step) < hmax)
*h += h_step;
-
}
static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt,
@@ -1167,12 +1182,12 @@ static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt,
/* V4L2 specification suggests the driver corrects the format struct
* if any of the dimensions is unsupported */
if (q_type == FMT_TYPE_OUTPUT)
- jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
+ jpeg_bound_align_image(ctx, &pix->width, S5P_JPEG_MIN_WIDTH,
S5P_JPEG_MAX_WIDTH, 0,
&pix->height, S5P_JPEG_MIN_HEIGHT,
S5P_JPEG_MAX_HEIGHT, 0);
else
- jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
+ jpeg_bound_align_image(ctx, &pix->width, S5P_JPEG_MIN_WIDTH,
S5P_JPEG_MAX_WIDTH, fmt->h_align,
&pix->height, S5P_JPEG_MIN_HEIGHT,
S5P_JPEG_MAX_HEIGHT, fmt->v_align);
@@ -1294,7 +1309,7 @@ static int exynos4_jpeg_get_output_buffer_size(struct s5p_jpeg_ctx *ctx,
else
wh_align = 1;
- jpeg_bound_align_image(&w, S5P_JPEG_MIN_WIDTH,
+ jpeg_bound_align_image(ctx, &w, S5P_JPEG_MIN_WIDTH,
S5P_JPEG_MAX_WIDTH, wh_align,
&h, S5P_JPEG_MIN_HEIGHT,
S5P_JPEG_MAX_HEIGHT, wh_align);
--
1.7.9.5
--
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