Hi Jean-Michel,
Am Dienstag, den 21.10.2014, 17:39 +0200 schrieb Jean-Michel Hautbois:
[...]
> And the output is now :
> v4l2-ctl -d1 --stream-out-mmap --stream-mmap --stream-to x.raw
> [ 6208.240919] coda 2040000.vpu: Not output type
> [ 6208.245316] coda 2040000.vpu: streamon_out (N), streamon_cap (Y)
> [ 6208.251353] coda 2040000.vpu: fill bitstream
> [ 6208.255653] coda 2040000.vpu: fill bitstream payload : 0
> VIDIOC_STREAMON: failed: Invalid argument
>
> Any idea ?
> JM
$ trace-cmd record -e v4l2* v4l2-ctl -d13 --stream-out-mmap --stream-mmap
--stream-to x.raw
[...]
$ trace-cmd report -R | grep bytesused
[...]
v4l2-ctl-308 [003] 1030.861067: v4l2_qbuf: minor=44 index=0
type=1 bytesused=0 flags=16387 field=0 timestamp=0 timecode_type=0
timecode_flags=0 timecode_frames=0 timecode_seconds=0 timecode_minutes=0
timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0 timecode_userbits2=0
timecode_userbits3=0 sequence=0
v4l2-ctl-308 [003] 1030.861292: v4l2_qbuf: minor=44 index=1
type=1 bytesused=0 flags=16387 field=0 timestamp=0 timecode_type=0
timecode_flags=0 timecode_frames=0 timecode_seconds=0 timecode_minutes=0
timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0 timecode_userbits2=0
timecode_userbits3=0 sequence=0
v4l2-ctl-308 [003] 1030.861471: v4l2_qbuf: minor=44 index=2
type=1 bytesused=0 flags=16387 field=0 timestamp=0 timecode_type=0
timecode_flags=0 timecode_frames=0 timecode_seconds=0 timecode_minutes=0
timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0 timecode_userbits2=0
timecode_userbits3=0 sequence=0
v4l2-ctl-308 [003] 1030.861638: v4l2_qbuf: minor=44 index=3
type=1 bytesused=0 flags=16387 field=0 timestamp=0 timecode_type=0
timecode_flags=0 timecode_frames=0 timecode_seconds=0 timecode_minutes=0
timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0 timecode_userbits2=0
timecode_userbits3=0 sequence=0
v4l2-ctl-308 [003] 1030.862301: v4l2_qbuf: minor=44 index=0
type=2 bytesused=3133440 flags=16387 field=1 timestamp=1030852944000
timecode_type=0 timecode_flags=0 timecode_frames=0 timecode_seconds=0
timecode_minutes=0 timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0
timecode_userbits2=0 timecode_userbits3=0 sequence=0
v4l2-ctl-308 [003] 1030.862490: v4l2_qbuf: minor=44 index=1
type=2 bytesused=3133440 flags=16387 field=1 timestamp=1030853139000
timecode_type=0 timecode_flags=0 timecode_frames=0 timecode_seconds=0
timecode_minutes=0 timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0
timecode_userbits2=0 timecode_userbits3=0 sequence=0
v4l2-ctl-308 [003] 1030.862672: v4l2_qbuf: minor=44 index=2
type=2 bytesused=3133440 flags=16387 field=1 timestamp=1030853322000
timecode_type=0 timecode_flags=0 timecode_frames=0 timecode_seconds=0
timecode_minutes=0 timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0
timecode_userbits2=0 timecode_userbits3=0 sequence=0
v4l2-ctl-308 [003] 1030.862841: v4l2_qbuf: minor=44 index=3
type=2 bytesused=3133440 flags=16387 field=1 timestamp=1030853491000
timecode_type=0 timecode_flags=0 timecode_frames=0 timecode_seconds=0
timecode_minutes=0 timecode_hours=0 timecode_userbits0=0 timecode_userbits1=0
timecode_userbits2=0 timecode_userbits3=0 sequence=0
The decoder is fed ~ 3 MiB input buffers, which it tries (and fails) to
copy into the 1 MiB bitstream ringbuffer (currently hard-coded via the
badly named CODA_MAX_FRAME_SIZE constant), so the bitstream payload in
the ringbuffer is 0 during start_streaming.
regards
Philipp
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