Commit Graph

11 Commits

Author SHA1 Message Date
Philipp Zabel
a22496c662 [media] coda: add support for contexts that do not use the BIT processor
In preparation for CODA9 JPEG support, allow contexts that
control hardware units directly, without the BIT processor.

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>
2015-02-02 10:37:34 -02:00
Philipp Zabel
6dd5ef5bdd [media] coda: remove unused isequence, reset qsequence in stop_streaming
The isequence counter is never used, qsequence counts the buffers queued into
the bit decoder bitstream ringbuffer. It needs to be reset in stop_streaming.

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>
2015-02-02 10:25:14 -02:00
Philipp Zabel
edc16cb115 [media] coda: drop JPEG buffers not framed by SOI and EOI markers
This patch adds a quick check for valid JPEG frames before feeding them into
the bitstream buffer: Frames that do not begin with the JPEG start of image
marker and end with the end of image marker are dropped.

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>
2014-10-28 15:41:07 -02:00
Philipp Zabel
7cbb105fef [media] coda: store bitstream buffer position with buffer metadata
Storing the buffer position in the bitstream with the buffer metadata
allows to later use that information to drop metadata for skipped buffers
and to determine whether bitstream padding has to be applied.

This patch also renames struct coda_timestamp to struct coda_buffer_meta
to make clear that it contains more than only the buffer timestamp.

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>
2014-10-28 15:37:32 -02:00
Philipp Zabel
cb1d3a3363 [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>
2014-10-28 15:03:16 -02:00
Philipp Zabel
2c11d1bdfc [media] coda: add coda_video_device descriptors
Each video device descriptor determines the name, callback ops, and input and
output formats on the corresponding video device. This simplifies coda_enum_fmt
and coda_try_fmt a bit and will simplify adding separate video devices for JPEG
codecs due to the slightly different behavior in the CodaDx6/CODA7542 case and
a separate hardware unit on CODA960.

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>
2014-10-28 15:01:05 -02:00
Philipp Zabel
856d7d9326 [media] coda: add coda_write_base helper
Add a helper function that writes a vb2_buffer's Y, Cb, and
Cr plane base addresses of into three consecutive registers.
This moves common code out of coda-bit.c.

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>
2014-10-28 14:26:53 -02:00
Philipp Zabel
79924ca9cf [media] coda: move BIT specific functions into separate file
This patch moves the BIT processor specific coda_context_ops, the firmware
upload and other related functions from coda-common.c into coda-bit.c.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:22 -05:00
Philipp Zabel
4f4ee9ee88 [media] coda: move H.264 helper function into separate file
Currently there is only the coda_h264_padding function, but
we will have to add more H.264 specific helpers later.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:22 -05:00
Philipp Zabel
a1192a17ee [media] coda: add context ops
Add a struct coda_context_ops that encapsulates context specific operations.
This will simplify adding JPEG support in the future and helps to avoid
exporting all functions individually when they move out of the main code
file.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:21 -05:00
Philipp Zabel
a2b3e46acb [media] coda: move defines, enums, and structs into shared header
These will have to be shared between multiple code files.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:21 -05:00