Hi,
this series contains a few fixes for MPEG-2 sequence number counting,
decoder/encoder stop command race conditions and some more work to
further move towards V4L2 stateful decoder API compliance:
Sequence initialization, which lets the firmware parse the bitstream
headers, is reworked to run before the capture queue is streaming,
with some padding acrobatics to work around issues when only headers
or very small buffers are queued initially. A SOURCE_CHANGE event
is issued after sequence initialization completes.
The sequence counting mechanism used to determine the last processed
buffer is replaced with a last buffer flag that is set on the last
queued output buffer and carried over to the corresponding bitstream
metadata, to the decoded internal tiled frame, and finally to the
returned linear capture buffer.
Dynamic parameter change support is added for encoder rate control
or quantization parameters, slice mode, and cyclic intra refresh
interval.
Inbetween there are a few code cleanup patches that introduce, change,
or make use of helper functions, and improve driver structures.
regards
Philipp
Marco Felsch (2):
media: coda: fix last buffer handling in V4L2_ENC_CMD_STOP
media: coda: fix V4L2_DEC_CMD_STOP when all buffers are already
consumed
Michael Tretter (1):
media: coda: implement CMD_START to restart decoding
Philipp Zabel (25):
media: coda: use mem2mem try_en/decoder_cmd helpers
media: coda: fix mpeg2 sequence number handling
media: coda: add coda_wake_up_capture_queue
media: coda: split decoder sequence initialization out of start
decoding
media: coda: add sequence initialization work
media: coda: implement decoder source change event
media: coda: integrate internal frame metadata into a structure
media: coda: make coda_bitstream_queue more versatile
media: coda: pad first buffer with repeated MPEG headers to fix
sequence init
media: coda: do not enforce 512-byte initial bitstream payload on
CODA960
media: coda: flush bitstream ring buffer on decoder restart
media: coda: increment sequence offset for the last returned frame
media: coda: allow flagging last output buffer internally
media: coda: mark the last output buffer on decoder stop command
media: coda: only set the stream end flags if there are no more
pending output buffers
media: coda: mark the last output buffer on encoder stop command
media: coda: retire coda_buf_is_end_of_stream
media: coda: only wake up capture queue if no pending buffers to
encode
media: coda: flag the last encoded buffer
media: coda: lock capture queue wakeup against encoder stop command
media: coda: mark last pending buffer or last meta on decoder stop
command
media: coda: mark last returned frame
media: coda: store device pointer in driver structure instead of pdev
media: coda: add coda_slice_mode() function
media: coda: encoder parameter change support
drivers/media/platform/coda/coda-bit.c | 403 +++++++++++++++++-----
drivers/media/platform/coda/coda-common.c | 244 ++++++++++---
drivers/media/platform/coda/coda-mpeg2.c | 43 +++
drivers/media/platform/coda/coda-mpeg4.c | 38 ++
drivers/media/platform/coda/coda.h | 33 +-
drivers/media/platform/coda/coda_regs.h | 18 +
6 files changed, 637 insertions(+), 142 deletions(-)
--
2.20.1
