marfrit
2146341460
Adds a build-time switch so platforms that will never see a
daedalus_v4l2 kernel module (Allwinner cedrus, RK without the
shim, etc.) can opt out of the probe entry + dispatch branch.
meson setup build # daedalus support on
meson setup build-off -Ddaedalus_v4l2=false # off
Implementation:
- meson_options.txt: new boolean `daedalus_v4l2`, default true.
- src/meson.build: when option is true, autoconfig.h gets
`#define HAVE_DAEDALUS_V4L2 1`.
- src/request.c: known_decoder_drivers[] entry, primary-driver
detection branch, and post-probe log line all gated by
#ifdef HAVE_DAEDALUS_V4L2.
- src/request.h: struct daedalus fields kept UNCONDITIONAL.
Two extra int per session and the struct layout stays stable
across translation units regardless of option — avoids the
ODR risk of every consumer of request.h needing to include
autoconfig.h before request.h.
Verified on hertz: both builds compile clean.
build/src/autoconfig.h has HAVE_DAEDALUS_V4L2; .so contains
"daedalus_v4l2" string + log message.
build-off/src/autoconfig.h doesn't; .so contains no daedalus
strings at all.
Default-on build still passes vainfo end-to-end:
vainfo: Driver version: v4l2-request
vainfo: Supported profile and entrypoints
VAProfileH264Main / High / ConstrainedBaseline / MultiviewHigh
/ StereoHigh : VAEntrypointVLD
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileAV1Profile0 : VAEntrypointVLD
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
18 lines
527 B
Meson
18 lines
527 B
Meson
option(
|
|
'kernel_headers',
|
|
type : 'string',
|
|
value : '',
|
|
description: 'Path to sanitized Linux Kernel headers'
|
|
)
|
|
|
|
option(
|
|
'daedalus_v4l2',
|
|
type : 'boolean',
|
|
value : true,
|
|
description: 'Enable probe + dispatch for the out-of-tree daedalus_v4l2 ' +
|
|
'stateless decoder shim (Pi 5 / CM5 daemon-backed VP9/AV1/H264). ' +
|
|
'Default true; disable on platforms where the daedalus_v4l2 ' +
|
|
'kernel module will never be present to slim the probe array.'
|
|
)
|
|
|