| Message ID | 20230914-rockchip-rga-multiplanar-v2-1-bbfa6abf8bbf@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: rockchip: rga: add support for multi-planar formats | expand |
On Fri, Oct 13, 2023 at 01:00:22PM +0200, Michael Tretter wrote: Hi Michael, > When using 32 bit RGB formats, the RGA on the rk3568 produces wrong > colors as the wrong color channels are read or written. The reason is > that the format description for the channel swizzeling is wrong and the > wrong bits are configured. For example, when converting ARGB32 to NV12, > the alpha channel is used as blue channel.. This doesn't happen if the > color format is the same on both sides. > > Fix the color_swap settings of the formats to correctly handle 32 bit > RGB formats. You mentioned in your cover letter that you only tested this on rk3568 so I tested it on an rk3399 as well. I used gstreamer to convert each of the formats that you changed (V4L2_PIX_FMT_ARGB32, V4L2_PIX_FMT_ABGR32, V4L2_PIX_FMT_XBGR32) into each of: BA24, AR24, XR24, RGB3, BGRI 3, NV21, YU12, 422P, YV12, and NM12. All the colour conversions are working and much better than before which I could see was definitely broken. Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com> > > For RGA_COLOR_FMT_XBGR8888, the RGA_COLOR_ALPHA_SWAP bit doesn't have an > effect. Thus, it isn't possible to handle the V4L2_PIX_FMT_XRGB32. Thus, > it is removed from the list of supported formats. > > Signed-off-by: Michael Tretter <m.tretter@pengutronix.de> > --- > Changes in v2: None > --- > drivers/media/platform/rockchip/rga/rga.c | 15 +++------------ > 1 file changed, 3 insertions(+), 12 deletions(-) > > diff --git a/drivers/media/platform/rockchip/rga/rga.c b/drivers/media/platform/rockchip/rga/rga.c > index f1c532a5802a..25f5b5eebf13 100644 > --- a/drivers/media/platform/rockchip/rga/rga.c > +++ b/drivers/media/platform/rockchip/rga/rga.c > @@ -184,25 +184,16 @@ static int rga_setup_ctrls(struct rga_ctx *ctx) > static struct rga_fmt formats[] = { > { > .fourcc = V4L2_PIX_FMT_ARGB32, > - .color_swap = RGA_COLOR_RB_SWAP, > + .color_swap = RGA_COLOR_ALPHA_SWAP, > .hw_format = RGA_COLOR_FMT_ABGR8888, > .depth = 32, > .uv_factor = 1, > .y_div = 1, > .x_div = 1, > }, > - { > - .fourcc = V4L2_PIX_FMT_XRGB32, > - .color_swap = RGA_COLOR_RB_SWAP, > - .hw_format = RGA_COLOR_FMT_XBGR8888, > - .depth = 32, > - .uv_factor = 1, > - .y_div = 1, > - .x_div = 1, > - }, > { > .fourcc = V4L2_PIX_FMT_ABGR32, > - .color_swap = RGA_COLOR_ALPHA_SWAP, > + .color_swap = RGA_COLOR_RB_SWAP, > .hw_format = RGA_COLOR_FMT_ABGR8888, > .depth = 32, > .uv_factor = 1, > @@ -211,7 +202,7 @@ static struct rga_fmt formats[] = { > }, > { > .fourcc = V4L2_PIX_FMT_XBGR32, > - .color_swap = RGA_COLOR_ALPHA_SWAP, > + .color_swap = RGA_COLOR_RB_SWAP, > .hw_format = RGA_COLOR_FMT_XBGR8888, > .depth = 32, > .uv_factor = 1, > > -- > 2.39.2 >
diff --git a/drivers/media/platform/rockchip/rga/rga.c b/drivers/media/platform/rockchip/rga/rga.c index f1c532a5802a..25f5b5eebf13 100644 --- a/drivers/media/platform/rockchip/rga/rga.c +++ b/drivers/media/platform/rockchip/rga/rga.c @@ -184,25 +184,16 @@ static int rga_setup_ctrls(struct rga_ctx *ctx) static struct rga_fmt formats[] = { { .fourcc = V4L2_PIX_FMT_ARGB32, - .color_swap = RGA_COLOR_RB_SWAP, + .color_swap = RGA_COLOR_ALPHA_SWAP, .hw_format = RGA_COLOR_FMT_ABGR8888, .depth = 32, .uv_factor = 1, .y_div = 1, .x_div = 1, }, - { - .fourcc = V4L2_PIX_FMT_XRGB32, - .color_swap = RGA_COLOR_RB_SWAP, - .hw_format = RGA_COLOR_FMT_XBGR8888, - .depth = 32, - .uv_factor = 1, - .y_div = 1, - .x_div = 1, - }, { .fourcc = V4L2_PIX_FMT_ABGR32, - .color_swap = RGA_COLOR_ALPHA_SWAP, + .color_swap = RGA_COLOR_RB_SWAP, .hw_format = RGA_COLOR_FMT_ABGR8888, .depth = 32, .uv_factor = 1, @@ -211,7 +202,7 @@ static struct rga_fmt formats[] = { }, { .fourcc = V4L2_PIX_FMT_XBGR32, - .color_swap = RGA_COLOR_ALPHA_SWAP, + .color_swap = RGA_COLOR_RB_SWAP, .hw_format = RGA_COLOR_FMT_XBGR8888, .depth = 32, .uv_factor = 1,
When using 32 bit RGB formats, the RGA on the rk3568 produces wrong colors as the wrong color channels are read or written. The reason is that the format description for the channel swizzeling is wrong and the wrong bits are configured. For example, when converting ARGB32 to NV12, the alpha channel is used as blue channel.. This doesn't happen if the color format is the same on both sides. Fix the color_swap settings of the formats to correctly handle 32 bit RGB formats. For RGA_COLOR_FMT_XBGR8888, the RGA_COLOR_ALPHA_SWAP bit doesn't have an effect. Thus, it isn't possible to handle the V4L2_PIX_FMT_XRGB32. Thus, it is removed from the list of supported formats. Signed-off-by: Michael Tretter <m.tretter@pengutronix.de> --- Changes in v2: None --- drivers/media/platform/rockchip/rga/rga.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-)