diff options
Diffstat (limited to 'drivers/media/platform/s5p-jpeg/jpeg-core.c')
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-core.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 3e3d94d..eb13fdf 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -1317,12 +1317,16 @@ static int exynos4_jpeg_get_output_buffer_size(struct s5p_jpeg_ctx *ctx, return w * h * fmt_depth >> 3; } +static int exynos3250_jpeg_try_downscale(struct s5p_jpeg_ctx *ctx, + struct v4l2_rect *r); + static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) { struct vb2_queue *vq; struct s5p_jpeg_q_data *q_data = NULL; struct v4l2_pix_format *pix = &f->fmt.pix; struct v4l2_ctrl *ctrl_subs; + struct v4l2_rect scale_rect; unsigned int f_type; vq = v4l2_m2m_get_vq(ct->fh.m2m_ctx, f->type); @@ -1382,6 +1386,20 @@ static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) ct->crop_rect.width = pix->width; ct->crop_rect.height = pix->height; } + + /* + * Prevent downscaling to YUV420 format by more than 2 + * for Exynos3250 SoC as it produces broken raw image + * in such cases. + */ + if (ct->mode == S5P_JPEG_DECODE && + f_type == FMT_TYPE_CAPTURE && + ct->jpeg->variant->version == SJPEG_EXYNOS3250 && + pix->pixelformat == V4L2_PIX_FMT_YUV420 && + ct->scale_factor > 2) { + scale_rect.width = ct->out_q.w / 2; + scale_rect.height = ct->out_q.h / 2; + exynos3250_jpeg_try_downscale(ct, &scale_rect); } return 0; |
