mbox series

[v6,0/5] media: imx-jpeg: Fix some motion-jpeg decoding issues

Message ID 20250421081301.1304-1-ming.qian@oss.nxp.com
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Series media: imx-jpeg: Fix some motion-jpeg decoding issues | expand

Message

Ming Qian(OSS) April 21, 2025, 8:12 a.m. UTC 
From: Ming Qian <ming.qian@oss.nxp.com>

To support decoding motion-jpeg without DHT, driver will try to decode a
pattern jpeg before actual jpeg frame by use of linked descriptors
(This is called "repeat mode"), then the DHT in the pattern jpeg can be
used for decoding the motion-jpeg.

But there is some hardware limitation in the repeat mode, that may cause
corruption or decoding timeout.

Try to make workaround for these limitation in this patchset.

Changelog:
v6
- Improve commit message
- Add Fixes tag

v5
- Split the resetting pointers when freed to a separate patch

v4:
- Improve commit message

v3:
- Read the slot_status register twice
- Improve commit message
- Split the moving of code into a separate patch

v2:
- Add the Fixes tag
- Improve commit message

Ming Qian (5):
  media: imx-jpeg: Move mxc_jpeg_free_slot_data() ahead
  media: imx-jpeg: Reset slot data pointers when freed
  media: imx-jpeg: Cleanup after an allocation error
  media: imx-jpeg: Change the pattern size to 128x64
  media: imx-jpeg: Check decoding is ongoing for motion-jpeg

 .../media/platform/nxp/imx-jpeg/mxc-jpeg-hw.h |   1 +
 .../media/platform/nxp/imx-jpeg/mxc-jpeg.c    | 120 +++++++++++++-----
 .../media/platform/nxp/imx-jpeg/mxc-jpeg.h    |   5 +
 3 files changed, 97 insertions(+), 29 deletions(-)