[media] coda: add CODA7541 JPEG support
This patch adds JPEG encoding and decoding support for CODA7541,
using the BIT processor. Separate JPEG encoder and decoder video
devices are created due to different streaming behaviour and
different supported pixel formats.
The hardware can not change subsampling on the fly, but encode
and decode 4:2:2 subsampled JPEG images from and into this format.
The CODA7541 JPEG decoder uses the bitstream buffer and thus can run
without new buffers queued if there is a buffer in the bitstream.
Since there is no standard way to store the colorspace used in
JPEGs, and to make v4l2-compliance happy, the JPEG format always
reports V4L2_COLORSPACE_JPEG.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/platform/coda/coda.h b/drivers/media/platform/coda/coda.h
index 07eaf58..c14dee8 100644
--- a/drivers/media/platform/coda/coda.h
+++ b/drivers/media/platform/coda/coda.h
@@ -69,7 +69,7 @@
struct coda_dev {
struct v4l2_device v4l2_dev;
- struct video_device vfd[3];
+ struct video_device vfd[5];
struct platform_device *plat_dev;
const struct coda_devtype *devtype;
@@ -118,6 +118,9 @@
u8 mpeg4_inter_qp;
u8 gop_size;
int intra_refresh;
+ u8 jpeg_quality;
+ u8 jpeg_restart_interval;
+ u8 *jpeg_qmat_tab[3];
int codec_mode;
int codec_mode_aux;
enum v4l2_mpeg_video_multi_slice_mode slice_mode;
@@ -288,6 +291,9 @@
int coda_h264_padding(int size, char *p);
+int coda_jpeg_write_tables(struct coda_ctx *ctx);
+void coda_set_jpeg_compression_quality(struct coda_ctx *ctx, int quality);
+
extern const struct coda_context_ops coda_bit_encode_ops;
extern const struct coda_context_ops coda_bit_decode_ops;