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meson: Rework FFmpeg / tinycompress detection and add pw-cat-ffmpeg option

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* Decouple FFmpeg integration in pw-cat from the ffmpeg option; if
  one wants to use Compress-Offload but not the ffmpeg SPA plugin,
  it is then possible to just pass -Dpw-cat-ffmpeg=enabled to meson.
  Likewise, this also makes it possible to build the ffmpeg plugin
  without extending pw-cat.
* tinycompress does not need to be detected in the root meson.build,
  since it is only needed by the alsa plugin.
This commit is contained in:
Carlos Rafael Giani 2022-11-23 16:22:30 +01:00 • committed by Wim Taymans
parent e9a2c6aa34
commit 6284cf39c0
4 changed files with 29 additions and 12 deletions
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19
meson.build
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@ -266,14 +266,17 @@ if not readline_dep.found()
readline_dep = cc.find_library('readline', required : get_option('readline'))
endif
need_avcodec = get_option('ffmpeg').enabled() or get_option('pw-cat').enabled()
avcodec_dep = dependency('libavcodec', required: need_avcodec)
avformat_dep = dependency('libavformat', required: get_option('pw-cat'))
summary({'Libav for pw-cat': avcodec_dep.found() and avformat_dep.found()}, bool_yn: true, section: 'Support for ALSA Compress-Offload API')
tinycompress_dep = cc.find_library('tinycompress', has_headers: ['tinycompress/tinycompress.h' ], required: get_option('compress-offload'))
summary({'Compress-Offload sink': tinycompress_dep.found()}, bool_yn: true, section: 'Support for ALSA Compress-Offload API')
compress_offload_enabled = avcodec_dep.found() and avformat_dep.found() and tinycompress_dep.found()
cdata.set('HAVE_ALSA_COMPRESS_OFFLOAD', compress_offload_enabled)
# Both the FFmpeg SPA plugin and the pw-cat FFmpeg integration use libavcodec.
# But only the latter also needs libavformat.
# Search for these libraries here, globally, so both of these subprojects can reuse the results.
pw_cat_ffmpeg = get_option('pw-cat-ffmpeg')
ffmpeg = get_option('ffmpeg')
if pw_cat_ffmpeg.allowed() or ffmpeg.allowed()
avcodec_dep = dependency('libavcodec', required: pw_cat_ffmpeg.enabled() or ffmpeg.enabled())
avformat_dep = dependency('libavformat', required: pw_cat_ffmpeg.enabled())
else
avcodec_dep = dependency('', required: false)
endif
summary({'readline (for pw-cli)': readline_dep.found()}, bool_yn: true, section: 'Misc dependencies')
cdata.set('HAVE_READLINE', readline_dep.found())