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[media] s5p-jpeg: Adapt to new controls 

Adapt to new controls (subsampling).

For encoding, the destination format now needs to be set to V4L2_PIX_FMT_JPEG
and the subsampling (4:2:2 or 4:2:0) needs to be set using the respective
control (V4L2_CID_JPEG_CHROMA_SUBSAMPLING). Required buffer size for
destination image during encoding is no longer deduced from the format (which
generally implied overestimation), but needs to be given from userspace in
sizeimage.

Not strictly related to the added controls, this patch also fixes setting the
subsampling of the destination image for decoding, depending on the destination
format.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Andrzej Pietrasiewicz 2012-02-20 07:32:25 -03:00 committed by Mauro Carvalho Chehab
parent 27dda973e8
commit fb6f8c0269
1 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/media/video/s5p-jpeg/jpeg-core.c
View File

@ -32,10 +32,9 @@
static struct s5p_jpeg_fmt formats_enc[] = {
{
.name = "YUV 4:2:0 planar, YCbCr",
.fourcc = V4L2_PIX_FMT_YUV420,
.depth = 12,
.colplanes = 3,
.name = "JPEG JFIF",
.fourcc = V4L2_PIX_FMT_JPEG,
.colplanes = 1,
.types = MEM2MEM_CAPTURE,
},
{
@ -43,7 +42,7 @@ static struct s5p_jpeg_fmt formats_enc[] = {
.fourcc = V4L2_PIX_FMT_YUYV,
.depth = 16,
.colplanes = 1,
.types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
.types = MEM2MEM_OUTPUT,
},
{
.name = "RGB565",
@ -1025,11 +1024,14 @@ static void s5p_jpeg_device_run(void *priv)
jpeg_htbl_dc(jpeg->regs, 2);
jpeg_htbl_ac(jpeg->regs, 3);
jpeg_htbl_dc(jpeg->regs, 3);
} else {
} else { /* S5P_JPEG_DECODE */
jpeg_rst_int_enable(jpeg->regs, true);
jpeg_data_num_int_enable(jpeg->regs, true);
jpeg_final_mcu_num_int_enable(jpeg->regs, true);
jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_422);
if (ctx->cap_q.fmt->fourcc == V4L2_PIX_FMT_YUYV)
jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_422);
else
jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_420);
jpeg_jpgadr(jpeg->regs, src_addr);
jpeg_imgadr(jpeg->regs, dst_addr);
}
@ -1269,6 +1271,7 @@ static irqreturn_t s5p_jpeg_irq(int irq, void *dev_id)
curr_ctx->subsampling = jpeg_get_subsampling_mode(jpeg->regs);
spin_unlock(&jpeg->slock);
jpeg_clear_int(jpeg->regs);
return IRQ_HANDLED;