mirror of https://github.com/encounter/SDL.git
audio: Add Pipewire playback/capture sink
This commit is contained in:
Frank Praznik
Sam Lantinga
parent
57a927e8d7
commit
2f0b99a774
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@ -360,6 +360,8 @@ set_option(JACK "Support the JACK audio API" ${UNIX_SYS})
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dep_option(JACK_SHARED "Dynamically load JACK audio support" ON "JACK" OFF)
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dep_option(JACK_SHARED "Dynamically load JACK audio support" ON "JACK" OFF)
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set_option(ESD "Support the Enlightened Sound Daemon" ${UNIX_SYS})
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set_option(ESD "Support the Enlightened Sound Daemon" ${UNIX_SYS})
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dep_option(ESD_SHARED "Dynamically load ESD audio support" ON "ESD" OFF)
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dep_option(ESD_SHARED "Dynamically load ESD audio support" ON "ESD" OFF)
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set_option(PIPEWIRE "Use Pipewire" ${UNIX_SYS})
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dep_option(PIPEWIRE_SHARED "Dynamically load Pipewire support" ON "PIPEWIRE" OFF)
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set_option(PULSEAUDIO "Use PulseAudio" ${UNIX_SYS})
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set_option(PULSEAUDIO "Use PulseAudio" ${UNIX_SYS})
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dep_option(PULSEAUDIO_SHARED "Dynamically load PulseAudio support" ON "PULSEAUDIO" OFF)
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dep_option(PULSEAUDIO_SHARED "Dynamically load PulseAudio support" ON "PULSEAUDIO" OFF)
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set_option(ARTS "Support the Analog Real Time Synthesizer" ${UNIX_SYS})
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set_option(ARTS "Support the Analog Real Time Synthesizer" ${UNIX_SYS})
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@ -1165,6 +1167,7 @@ elseif(UNIX AND NOT APPLE AND NOT ANDROID AND NOT RISCOS)
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CheckOSS()
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CheckOSS()
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CheckALSA()
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CheckALSA()
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CheckJACK()
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CheckJACK()
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CheckPipewire()
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CheckPulseAudio()
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CheckPulseAudio()
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CheckESD()
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CheckESD()
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CheckARTS()
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CheckARTS()
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@ -128,6 +128,37 @@ macro(CheckALSA)
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endif()
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endif()
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endmacro()
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endmacro()
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# Requires:
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# - PkgCheckModules
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# Optional:
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# - PIPEWIRE_SHARED opt
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# - HAVE_DLOPEN opt
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macro(CheckPipewire)
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if(PIPEWIRE)
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pkg_check_modules(PKG_PIPEWIRE libpipewire-0.3>=0.3.20)
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if(PKG_PIPEWIRE_FOUND)
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set(HAVE_PIPEWIRE TRUE)
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file(GLOB PIPEWIRE_SOURCES ${SDL2_SOURCE_DIR}/src/audio/pipewire/*.c)
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set(SOURCE_FILES ${SOURCE_FILES} ${PIPEWIRE_SOURCES})
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set(SDL_AUDIO_DRIVER_PIPEWIRE 1)
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list(APPEND EXTRA_CFLAGS ${PKG_PIPEWIRE_CFLAGS})
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if(PIPEWIRE_SHARED)
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if(NOT HAVE_DLOPEN)
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message_warn("You must have SDL_LoadObject() support for dynamic Pipewire loading")
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else()
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FindLibraryAndSONAME("pipewire-0.3")
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set(SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC "\"${PIPEWIRE_0.3_LIB_SONAME}\"")
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set(HAVE_PIPEWIRE_SHARED TRUE)
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endif()
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else()
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list(APPEND EXTRA_LDFLAGS ${PKG_PIPEWIRE_LDFLAGS})
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endif()
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set(HAVE_SDL_AUDIO TRUE)
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endif()
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endif()
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endmacro()
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# Requires:
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# Requires:
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# - PkgCheckModules
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# - PkgCheckModules
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# Optional:
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# Optional:
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@ -676,6 +676,8 @@ RPI_CFLAGS
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FUSIONSOUND_LIBS
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FUSIONSOUND_LIBS
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FUSIONSOUND_CFLAGS
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FUSIONSOUND_CFLAGS
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ARTSCONFIG
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ARTSCONFIG
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PIPEWIRE_LIBS
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PIPEWIRE_CFLAGS
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PULSEAUDIO_LIBS
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PULSEAUDIO_LIBS
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PULSEAUDIO_CFLAGS
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PULSEAUDIO_CFLAGS
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ESD_LIBS
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ESD_LIBS
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@ -838,6 +840,8 @@ with_esd_prefix
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with_esd_exec_prefix
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with_esd_exec_prefix
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enable_esdtest
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enable_esdtest
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enable_esd_shared
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enable_esd_shared
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enable_pipewire
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enable_pipewire_shared
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enable_pulseaudio
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enable_pulseaudio
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enable_pulseaudio_shared
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enable_pulseaudio_shared
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enable_arts
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enable_arts
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@ -923,6 +927,8 @@ PKG_CONFIG_PATH
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PKG_CONFIG_LIBDIR
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PKG_CONFIG_LIBDIR
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JACK_CFLAGS
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JACK_CFLAGS
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JACK_LIBS
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JACK_LIBS
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PIPEWIRE_CFLAGS
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PIPEWIRE_LIBS
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PULSEAUDIO_CFLAGS
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PULSEAUDIO_CFLAGS
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PULSEAUDIO_LIBS
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PULSEAUDIO_LIBS
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FUSIONSOUND_CFLAGS
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FUSIONSOUND_CFLAGS
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@ -1605,6 +1611,9 @@ Optional Features:
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--enable-esd support the Enlightened Sound Daemon [[default=yes]]
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--enable-esd support the Enlightened Sound Daemon [[default=yes]]
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--disable-esdtest Do not try to compile and run a test ESD program
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--disable-esdtest Do not try to compile and run a test ESD program
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--enable-esd-shared dynamically load ESD audio support [[default=yes]]
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--enable-esd-shared dynamically load ESD audio support [[default=yes]]
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--enable-pipewire use Pipewire [[default=yes]]
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--enable-pipewire-shared
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dynamically load Pipewire support [[default=yes]]
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--enable-pulseaudio use PulseAudio [[default=yes]]
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--enable-pulseaudio use PulseAudio [[default=yes]]
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--enable-pulseaudio-shared
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--enable-pulseaudio-shared
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dynamically load PulseAudio support [[default=yes]]
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dynamically load PulseAudio support [[default=yes]]
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@ -1732,6 +1741,10 @@ Some influential environment variables:
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path overriding pkg-config's built-in search path
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path overriding pkg-config's built-in search path
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JACK_CFLAGS C compiler flags for JACK, overriding pkg-config
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JACK_CFLAGS C compiler flags for JACK, overriding pkg-config
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JACK_LIBS linker flags for JACK, overriding pkg-config
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JACK_LIBS linker flags for JACK, overriding pkg-config
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PIPEWIRE_CFLAGS
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C compiler flags for PIPEWIRE, overriding pkg-config
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PIPEWIRE_LIBS
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linker flags for PIPEWIRE, overriding pkg-config
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PULSEAUDIO_CFLAGS
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PULSEAUDIO_CFLAGS
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C compiler flags for PULSEAUDIO, overriding pkg-config
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C compiler flags for PULSEAUDIO, overriding pkg-config
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PULSEAUDIO_LIBS
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PULSEAUDIO_LIBS
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@ -18778,6 +18791,126 @@ _ACEOF
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fi
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fi
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}
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}
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CheckPipewire()
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{
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# Check whether --enable-pipewire was given.
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if test "${enable_pipewire+set}" = set; then :
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enableval=$enable_pipewire;
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else
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enable_pipewire=yes
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fi
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if test x$enable_audio = xyes -a x$enable_pipewire = xyes; then
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pkg_failed=no
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for libpipewire-0.3 >= 0.3.20" >&5
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$as_echo_n "checking for libpipewire-0.3 >= 0.3.20... " >&6; }
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if test -n "$PIPEWIRE_CFLAGS"; then
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pkg_cv_PIPEWIRE_CFLAGS="$PIPEWIRE_CFLAGS"
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elif test -n "$PKG_CONFIG"; then
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if test -n "$PKG_CONFIG" && \
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{ { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libpipewire-0.3 >= 0.3.20\""; } >&5
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($PKG_CONFIG --exists --print-errors "libpipewire-0.3 >= 0.3.20") 2>&5
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ac_status=$?
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; then
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pkg_cv_PIPEWIRE_CFLAGS=`$PKG_CONFIG --cflags "libpipewire-0.3 >= 0.3.20" 2>/dev/null`
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test "x$?" != "x0" && pkg_failed=yes
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else
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pkg_failed=yes
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fi
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else
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pkg_failed=untried
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fi
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if test -n "$PIPEWIRE_LIBS"; then
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pkg_cv_PIPEWIRE_LIBS="$PIPEWIRE_LIBS"
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elif test -n "$PKG_CONFIG"; then
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if test -n "$PKG_CONFIG" && \
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{ { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libpipewire-0.3 >= 0.3.20\""; } >&5
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($PKG_CONFIG --exists --print-errors "libpipewire-0.3 >= 0.3.20") 2>&5
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ac_status=$?
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; then
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pkg_cv_PIPEWIRE_LIBS=`$PKG_CONFIG --libs "libpipewire-0.3 >= 0.3.20" 2>/dev/null`
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test "x$?" != "x0" && pkg_failed=yes
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else
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pkg_failed=yes
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fi
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else
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pkg_failed=untried
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fi
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if test $pkg_failed = yes; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
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if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
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_pkg_short_errors_supported=yes
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else
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_pkg_short_errors_supported=no
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fi
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if test $_pkg_short_errors_supported = yes; then
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PIPEWIRE_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libpipewire-0.3 >= 0.3.20" 2>&1`
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else
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PIPEWIRE_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libpipewire-0.3 >= 0.3.20" 2>&1`
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fi
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# Put the nasty error message in config.log where it belongs
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echo "$PIPEWIRE_PKG_ERRORS" >&5
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audio_pipewire=no
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elif test $pkg_failed = untried; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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$as_echo "no" >&6; }
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audio_pipewire=no
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else
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PIPEWIRE_CFLAGS=$pkg_cv_PIPEWIRE_CFLAGS
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PIPEWIRE_LIBS=$pkg_cv_PIPEWIRE_LIBS
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
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$as_echo "yes" >&6; }
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audio_pipewire=yes
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fi
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if test x$audio_pipewire = xyes; then
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# Check whether --enable-pipewire-shared was given.
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if test "${enable_pipewire_shared+set}" = set; then :
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enableval=$enable_pipewire_shared;
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else
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enable_pipewire_shared=yes
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fi
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pipewire_lib=`find_lib "libpipewire-0.3.so.*" "$PIPEWIRE_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`
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$as_echo "#define SDL_AUDIO_DRIVER_PIPEWIRE 1" >>confdefs.h
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SOURCES="$SOURCES $srcdir/src/audio/pipewire/*.c"
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EXTRA_CFLAGS="$EXTRA_CFLAGS $PIPEWIRE_CFLAGS"
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if test x$have_loadso != xyes && \
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test x$enable_pipewire_shared = xyes; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: You must have SDL_LoadObject() support for dynamic Pipewire loading" >&5
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$as_echo "$as_me: WARNING: You must have SDL_LoadObject() support for dynamic Pipewire loading" >&2;}
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fi
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if test x$have_loadso = xyes && \
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test x$enable_pipewire_shared = xyes && test x$pipewire_lib != x; then
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echo "-- dynamic libpipewire-0.3 -> $pipewire_lib"
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cat >>confdefs.h <<_ACEOF
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#define SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC "$pipewire_lib"
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_ACEOF
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SUMMARY_audio="${SUMMARY_audio} pipewire(dynamic)"
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else
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS $PIPEWIRE_LIBS"
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SUMMARY_audio="${SUMMARY_audio} pipewire"
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fi
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have_audio=yes
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fi
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fi
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}
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CheckPulseAudio()
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CheckPulseAudio()
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{
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{
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# Check whether --enable-pulseaudio was given.
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# Check whether --enable-pulseaudio was given.
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@ -24893,6 +25026,7 @@ $as_echo "#define SDL_VIDEO_DRIVER_ANDROID 1" >>confdefs.h
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CheckNEON
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CheckNEON
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CheckOSS
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CheckOSS
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CheckALSA
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CheckALSA
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CheckPipewire
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CheckPulseAudio
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CheckPulseAudio
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CheckJACK
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CheckJACK
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CheckARTSC
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CheckARTSC
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37
configure.ac
37
configure.ac
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@ -1017,6 +1017,42 @@ AS_HELP_STRING([--enable-esd-shared], [dynamically load ESD audio support [[defa
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fi
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fi
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}
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}
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dnl Find Pipewire
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CheckPipewire()
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{
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AC_ARG_ENABLE(pipewire,
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AS_HELP_STRING([--enable-pipewire], [use Pipewire [[default=yes]]]),
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, enable_pipewire=yes)
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if test x$enable_audio = xyes -a x$enable_pipewire = xyes; then
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PKG_CHECK_MODULES([PIPEWIRE], [libpipewire-0.3 >= 0.3.20], audio_pipewire=yes, audio_pipewire=no)
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if test x$audio_pipewire = xyes; then
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AC_ARG_ENABLE(pipewire-shared,
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AS_HELP_STRING([--enable-pipewire-shared], [dynamically load Pipewire support [[default=yes]]]),
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, enable_pipewire_shared=yes)
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pipewire_lib=[`find_lib "libpipewire-0.3.so.*" "$PIPEWIRE_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
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AC_DEFINE(SDL_AUDIO_DRIVER_PIPEWIRE, 1, [ ])
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SOURCES="$SOURCES $srcdir/src/audio/pipewire/*.c"
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EXTRA_CFLAGS="$EXTRA_CFLAGS $PIPEWIRE_CFLAGS"
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if test x$have_loadso != xyes && \
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test x$enable_pipewire_shared = xyes; then
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AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic Pipewire loading])
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fi
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if test x$have_loadso = xyes && \
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test x$enable_pipewire_shared = xyes && test x$pipewire_lib != x; then
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echo "-- dynamic libpipewire-0.3 -> $pipewire_lib"
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AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC, "$pipewire_lib", [ ])
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SUMMARY_audio="${SUMMARY_audio} pipewire(dynamic)"
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else
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS $PIPEWIRE_LIBS"
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SUMMARY_audio="${SUMMARY_audio} pipewire"
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fi
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have_audio=yes
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fi
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fi
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}
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dnl Find PulseAudio
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dnl Find PulseAudio
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CheckPulseAudio()
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CheckPulseAudio()
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{
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{
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@ -3604,6 +3640,7 @@ case "$host" in
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CheckNEON
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CheckNEON
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CheckOSS
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CheckOSS
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CheckALSA
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CheckALSA
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CheckPipewire
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CheckPulseAudio
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CheckPulseAudio
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CheckJACK
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CheckJACK
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CheckARTSC
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CheckARTSC
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@ -284,6 +284,8 @@
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#cmakedefine SDL_AUDIO_DRIVER_OSS @SDL_AUDIO_DRIVER_OSS@
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#cmakedefine SDL_AUDIO_DRIVER_OSS @SDL_AUDIO_DRIVER_OSS@
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#cmakedefine SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H @SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H@
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#cmakedefine SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H @SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H@
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#cmakedefine SDL_AUDIO_DRIVER_PAUDIO @SDL_AUDIO_DRIVER_PAUDIO@
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#cmakedefine SDL_AUDIO_DRIVER_PAUDIO @SDL_AUDIO_DRIVER_PAUDIO@
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#cmakedefine SDL_AUDIO_DRIVER_PIPEWIRE @SDL_AUDIO_DRIVER_PIPEWIRE@
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#cmakedefine SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC @SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC@
|
||||||
#cmakedefine SDL_AUDIO_DRIVER_PULSEAUDIO @SDL_AUDIO_DRIVER_PULSEAUDIO@
|
#cmakedefine SDL_AUDIO_DRIVER_PULSEAUDIO @SDL_AUDIO_DRIVER_PULSEAUDIO@
|
||||||
#cmakedefine SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC @SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC@
|
#cmakedefine SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC @SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC@
|
||||||
#cmakedefine SDL_AUDIO_DRIVER_QSA @SDL_AUDIO_DRIVER_QSA@
|
#cmakedefine SDL_AUDIO_DRIVER_QSA @SDL_AUDIO_DRIVER_QSA@
|
||||||
|
|
|
||||||
|
|
@ -1610,6 +1610,26 @@ extern "C" {
|
||||||
*/
|
*/
|
||||||
#define SDL_HINT_AUDIO_DEVICE_STREAM_NAME "SDL_AUDIO_DEVICE_STREAM_NAME"
|
#define SDL_HINT_AUDIO_DEVICE_STREAM_NAME "SDL_AUDIO_DEVICE_STREAM_NAME"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* \brief Specify an application role for an audio device.
|
||||||
|
*
|
||||||
|
* Some audio backends (such as Pipewire) allow you to describe the role of
|
||||||
|
* your audio stream. Among other things, this description might show up in
|
||||||
|
* a system control panel or software for displaying and manipulating media
|
||||||
|
* playback/capture graphs.
|
||||||
|
*
|
||||||
|
* This hints lets you transmit that information to the OS. The contents of
|
||||||
|
* this hint are used while opening an audio device. You should use a string
|
||||||
|
* that describes your what your program is playing (Game, Music, Movie,
|
||||||
|
* etc...).
|
||||||
|
*
|
||||||
|
* Setting this to "" or leaving it unset will have SDL use a reasonable
|
||||||
|
* default: "Game" or something similar.
|
||||||
|
*
|
||||||
|
* On targets where this is not supported, this hint does nothing.
|
||||||
|
*/
|
||||||
|
#define SDL_HINT_AUDIO_DEVICE_STREAM_ROLE "SDL_AUDIO_DEVICE_STREAM_ROLE"
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Specify the behavior of Alt+Tab while the keyboard is grabbed.
|
* \brief Specify the behavior of Alt+Tab while the keyboard is grabbed.
|
||||||
*
|
*
|
||||||
|
|
|
||||||
|
|
@ -41,6 +41,9 @@ static const AudioBootStrap *const bootstrap[] = {
|
||||||
#if SDL_AUDIO_DRIVER_ALSA
|
#if SDL_AUDIO_DRIVER_ALSA
|
||||||
&ALSA_bootstrap,
|
&ALSA_bootstrap,
|
||||||
#endif
|
#endif
|
||||||
|
#if SDL_AUDIO_DRIVER_PIPEWIRE
|
||||||
|
&PIPEWIRE_bootstrap,
|
||||||
|
#endif
|
||||||
#if SDL_AUDIO_DRIVER_SNDIO
|
#if SDL_AUDIO_DRIVER_SNDIO
|
||||||
&SNDIO_bootstrap,
|
&SNDIO_bootstrap,
|
||||||
#endif
|
#endif
|
||||||
|
|
@ -113,6 +116,7 @@ static const AudioBootStrap *const bootstrap[] = {
|
||||||
#if SDL_AUDIO_DRIVER_DUMMY
|
#if SDL_AUDIO_DRIVER_DUMMY
|
||||||
&DUMMYAUDIO_bootstrap,
|
&DUMMYAUDIO_bootstrap,
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
NULL
|
NULL
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -182,6 +182,7 @@ typedef struct AudioBootStrap
|
||||||
} AudioBootStrap;
|
} AudioBootStrap;
|
||||||
|
|
||||||
/* Not all of these are available in a given build. Use #ifdefs, etc. */
|
/* Not all of these are available in a given build. Use #ifdefs, etc. */
|
||||||
|
extern AudioBootStrap PIPEWIRE_bootstrap;
|
||||||
extern AudioBootStrap PULSEAUDIO_bootstrap;
|
extern AudioBootStrap PULSEAUDIO_bootstrap;
|
||||||
extern AudioBootStrap ALSA_bootstrap;
|
extern AudioBootStrap ALSA_bootstrap;
|
||||||
extern AudioBootStrap JACK_bootstrap;
|
extern AudioBootStrap JACK_bootstrap;
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,850 @@
|
||||||
|
/*
|
||||||
|
Simple DirectMedia Layer
|
||||||
|
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
|
||||||
|
|
||||||
|
This software is provided 'as-is', without any express or implied
|
||||||
|
warranty. In no event will the authors be held liable for any damages
|
||||||
|
arising from the use of this software.
|
||||||
|
|
||||||
|
Permission is granted to anyone to use this software for any purpose,
|
||||||
|
including commercial applications, and to alter it and redistribute it
|
||||||
|
freely, subject to the following restrictions:
|
||||||
|
|
||||||
|
1. The origin of this software must not be misrepresented; you must not
|
||||||
|
claim that you wrote the original software. If you use this software
|
||||||
|
in a product, an acknowledgment in the product documentation would be
|
||||||
|
appreciated but is not required.
|
||||||
|
2. Altered source versions must be plainly marked as such, and must not be
|
||||||
|
misrepresented as being the original software.
|
||||||
|
3. This notice may not be removed or altered from any source distribution.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "../../SDL_internal.h"
|
||||||
|
#include "SDL_hints.h"
|
||||||
|
|
||||||
|
#if SDL_AUDIO_DRIVER_PIPEWIRE
|
||||||
|
|
||||||
|
#include <spa/param/audio/format-utils.h>
|
||||||
|
|
||||||
|
#include "SDL_audio.h"
|
||||||
|
#include "SDL_loadso.h"
|
||||||
|
#include "SDL_pipewire.h"
|
||||||
|
|
||||||
|
/*
|
||||||
|
* These seem to be sane limits as Pipewire
|
||||||
|
* uses them in several of it's own modules.
|
||||||
|
*/
|
||||||
|
#define PW_MIN_SAMPLES 32 /* About 0.67ms at 48kHz */
|
||||||
|
#define PW_MAX_SAMPLES 8192 /* About 170.6ms at 48kHz */
|
||||||
|
|
||||||
|
#define PW_ID_TO_HANDLE(x) (void *)((uintptr_t)x)
|
||||||
|
#define PW_HANDLE_TO_ID(x) (uint32_t)((uintptr_t)x)
|
||||||
|
|
||||||
|
static SDL_bool pipewire_initialized = SDL_FALSE;
|
||||||
|
|
||||||
|
/* Pipewire entry points */
|
||||||
|
static void (*PIPEWIRE_pw_init)(int *, char **);
|
||||||
|
static void (*PIPEWIRE_pw_deinit)(void);
|
||||||
|
static struct pw_thread_loop *(*PIPEWIRE_pw_thread_loop_new)(const char *, const struct spa_dict *);
|
||||||
|
static void (*PIPEWIRE_pw_thread_loop_destroy)(struct pw_thread_loop *);
|
||||||
|
static void (*PIPEWIRE_pw_thread_loop_stop)(struct pw_thread_loop *);
|
||||||
|
static struct pw_loop *(*PIPEWIRE_pw_thread_loop_get_loop)(struct pw_thread_loop *);
|
||||||
|
static void (*PIPEWIRE_pw_thread_loop_lock)(struct pw_thread_loop *);
|
||||||
|
static void (*PIPEWIRE_pw_thread_loop_unlock)(struct pw_thread_loop *);
|
||||||
|
static void (*PIPEWIRE_pw_thread_loop_signal)(struct pw_thread_loop *, bool);
|
||||||
|
static void (*PIPEWIRE_pw_thread_loop_wait)(struct pw_thread_loop *);
|
||||||
|
static int (*PIPEWIRE_pw_thread_loop_start)(struct pw_thread_loop *);
|
||||||
|
static struct pw_context *(*PIPEWIRE_pw_context_new)(struct pw_loop *, struct pw_properties *, size_t);
|
||||||
|
static void (*PIPEWIRE_pw_context_destroy)(struct pw_context *);
|
||||||
|
static struct pw_core *(*PIPEWIRE_pw_context_connect)(struct pw_context *, struct pw_properties *, size_t);
|
||||||
|
static void (*PIPEWIRE_pw_proxy_destroy)(struct pw_proxy *);
|
||||||
|
static int (*PIPEWIRE_pw_core_disconnect)(struct pw_core *);
|
||||||
|
static struct pw_stream *(*PIPEWIRE_pw_stream_new_simple)(struct pw_loop *, const char *, struct pw_properties *,
|
||||||
|
const struct pw_stream_events *, void *);
|
||||||
|
static void (*PIPEWIRE_pw_stream_destroy)(struct pw_stream *);
|
||||||
|
static int (*PIPEWIRE_pw_stream_connect)(struct pw_stream *, enum pw_direction, uint32_t, enum pw_stream_flags,
|
||||||
|
const struct spa_pod **, uint32_t);
|
||||||
|
static enum pw_stream_state (*PIPEWIRE_pw_stream_get_state)(struct pw_stream *stream, const char **error);
|
||||||
|
static struct pw_buffer *(*PIPEWIRE_pw_stream_dequeue_buffer)(struct pw_stream *);
|
||||||
|
static int (*PIPEWIRE_pw_stream_queue_buffer)(struct pw_stream *, struct pw_buffer *);
|
||||||
|
static struct pw_properties *(*PIPEWIRE_pw_properties_new)(const char *, ...)SPA_SENTINEL;
|
||||||
|
static void (*PIPEWIRE_pw_properties_free)(struct pw_properties *);
|
||||||
|
static int (*PIPEWIRE_pw_properties_set)(struct pw_properties *, const char *, const char *);
|
||||||
|
static int (*PIPEWIRE_pw_properties_setf)(struct pw_properties *, const char *, const char *, ...) SPA_PRINTF_FUNC(3, 4);
|
||||||
|
|
||||||
|
#ifdef SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC
|
||||||
|
|
||||||
|
static const char *pipewire_library = SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC;
|
||||||
|
static void * pipewire_handle = NULL;
|
||||||
|
|
||||||
|
static int
|
||||||
|
pipewire_dlsym(const char *fn, void **addr)
|
||||||
|
{
|
||||||
|
*addr = SDL_LoadFunction(pipewire_handle, fn);
|
||||||
|
if (*addr == NULL) {
|
||||||
|
/* Don't call SDL_SetError(): SDL_LoadFunction already did. */
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define SDL_PIPEWIRE_SYM(x) \
|
||||||
|
if (!pipewire_dlsym(#x, (void **)(char *)&PIPEWIRE_##x)) { \
|
||||||
|
return -1; \
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
load_pipewire_library()
|
||||||
|
{
|
||||||
|
if ((pipewire_handle = SDL_LoadObject(pipewire_library))) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
unload_pipewire_library()
|
||||||
|
{
|
||||||
|
if (pipewire_handle) {
|
||||||
|
SDL_UnloadObject(pipewire_handle);
|
||||||
|
pipewire_handle = NULL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#else
|
||||||
|
|
||||||
|
#define SDL_PIPEWIRE_SYM(x) PIPEWIRE_##x = x
|
||||||
|
|
||||||
|
static int
|
||||||
|
load_pipewire_library()
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
unload_pipewire_library()
|
||||||
|
{ /* Nothing to do */
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC */
|
||||||
|
|
||||||
|
static int
|
||||||
|
load_pipewire_syms()
|
||||||
|
{
|
||||||
|
SDL_PIPEWIRE_SYM(pw_init);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_deinit);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_new);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_destroy);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_stop);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_get_loop);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_lock);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_unlock);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_signal);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_wait);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_thread_loop_start);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_context_new);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_context_destroy);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_context_connect);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_proxy_destroy);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_core_disconnect);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_stream_new_simple);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_stream_destroy);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_stream_connect);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_stream_get_state);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_stream_dequeue_buffer);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_stream_queue_buffer);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_properties_new);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_properties_free);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_properties_set);
|
||||||
|
SDL_PIPEWIRE_SYM(pw_properties_setf);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
init_pipewire_library()
|
||||||
|
{
|
||||||
|
if (!load_pipewire_library()) {
|
||||||
|
if (!load_pipewire_syms()) {
|
||||||
|
PIPEWIRE_pw_init(NULL, NULL);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
deinit_pipewire_library()
|
||||||
|
{
|
||||||
|
PIPEWIRE_pw_deinit();
|
||||||
|
unload_pipewire_library();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Linked list for tracking connected devices */
|
||||||
|
struct connected_device
|
||||||
|
{
|
||||||
|
struct spa_list link;
|
||||||
|
|
||||||
|
Uint32 id;
|
||||||
|
SDL_bool is_capture;
|
||||||
|
|
||||||
|
char name[];
|
||||||
|
};
|
||||||
|
|
||||||
|
/* The global hotplug thread and associated objects. */
|
||||||
|
static struct pw_thread_loop *hotplug_loop;
|
||||||
|
static struct pw_core * hotplug_core;
|
||||||
|
static struct pw_context * hotplug_context;
|
||||||
|
static struct pw_registry * hotplug_registry;
|
||||||
|
static struct spa_hook hotplug_registry_listener;
|
||||||
|
static struct spa_hook hotplug_core_listener;
|
||||||
|
static struct spa_list device_list;
|
||||||
|
static int hotplug_init_seq_val;
|
||||||
|
static SDL_atomic_t hotplug_init_complete;
|
||||||
|
static SDL_atomic_t hotplug_events_enabled;
|
||||||
|
|
||||||
|
static void
|
||||||
|
check_add_device(Uint32 id, const char *name, const char *desc, SDL_bool is_capture)
|
||||||
|
{
|
||||||
|
struct connected_device *dev;
|
||||||
|
int str_buf_size;
|
||||||
|
|
||||||
|
PIPEWIRE_pw_thread_loop_lock(hotplug_loop);
|
||||||
|
|
||||||
|
/* See if the device is already in the list */
|
||||||
|
spa_list_for_each (dev, &device_list, link) {
|
||||||
|
if (dev->id == id) {
|
||||||
|
goto dup_found;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Add to the list if the device doesn't already exist */
|
||||||
|
str_buf_size = SDL_strlen(name) + SDL_strlen(desc) + 3;
|
||||||
|
dev = SDL_malloc(sizeof(struct connected_device) + str_buf_size);
|
||||||
|
dev->id = id;
|
||||||
|
dev->is_capture = is_capture;
|
||||||
|
SDL_snprintf(dev->name, str_buf_size, "%s: %s", name, desc);
|
||||||
|
|
||||||
|
spa_list_append(&device_list, &dev->link);
|
||||||
|
|
||||||
|
if (SDL_AtomicGet(&hotplug_events_enabled)) {
|
||||||
|
SDL_AddAudioDevice(is_capture, name, PW_ID_TO_HANDLE(id));
|
||||||
|
}
|
||||||
|
|
||||||
|
dup_found:
|
||||||
|
|
||||||
|
PIPEWIRE_pw_thread_loop_unlock(hotplug_loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
check_remove_device(Uint32 id)
|
||||||
|
{
|
||||||
|
struct connected_device *dev, *temp;
|
||||||
|
|
||||||
|
PIPEWIRE_pw_thread_loop_lock(hotplug_loop);
|
||||||
|
|
||||||
|
/* Find and remove the device from the list */
|
||||||
|
spa_list_for_each_safe (dev, temp, &device_list, link) {
|
||||||
|
if (dev->id == id) {
|
||||||
|
spa_list_remove(&dev->link);
|
||||||
|
|
||||||
|
if (SDL_AtomicGet(&hotplug_events_enabled)) {
|
||||||
|
SDL_RemoveAudioDevice(dev->is_capture, PW_ID_TO_HANDLE(id));
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_free(dev);
|
||||||
|
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
PIPEWIRE_pw_thread_loop_unlock(hotplug_loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
release_device_list()
|
||||||
|
{
|
||||||
|
struct connected_device *dev, *temp;
|
||||||
|
|
||||||
|
spa_list_for_each_safe (dev, temp, &device_list, link) {
|
||||||
|
spa_list_remove(&dev->link);
|
||||||
|
SDL_free(dev);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
registry_event_global_callback(void *object, uint32_t id, uint32_t permissions, const char *type, uint32_t version,
|
||||||
|
const struct spa_dict *props)
|
||||||
|
{
|
||||||
|
const char *node_nick, *node_desc;
|
||||||
|
SDL_bool is_capture;
|
||||||
|
|
||||||
|
/* We're only interested in nodes */
|
||||||
|
if (!SDL_strcmp(type, PW_TYPE_INTERFACE_Node)) {
|
||||||
|
const char *media_class = spa_dict_lookup(props, PW_KEY_MEDIA_CLASS);
|
||||||
|
if (media_class) {
|
||||||
|
/* Just want sink and capture */
|
||||||
|
if (!SDL_strcasecmp(media_class, "Audio/Sink")) {
|
||||||
|
is_capture = SDL_FALSE;
|
||||||
|
} else if (!SDL_strcasecmp(media_class, "Audio/Source")) {
|
||||||
|
is_capture = SDL_TRUE;
|
||||||
|
} else {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
node_nick = spa_dict_lookup(props, PW_KEY_NODE_NICK);
|
||||||
|
node_desc = spa_dict_lookup(props, PW_KEY_NODE_DESCRIPTION);
|
||||||
|
|
||||||
|
if (node_nick && node_desc) {
|
||||||
|
check_add_device(id, node_nick, node_desc, is_capture);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
registry_event_remove_callback(void *object, uint32_t id)
|
||||||
|
{
|
||||||
|
check_remove_device(id);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct pw_registry_events registry_events = { PW_VERSION_REGISTRY_EVENTS, .global = registry_event_global_callback,
|
||||||
|
.global_remove = registry_event_remove_callback };
|
||||||
|
|
||||||
|
static void
|
||||||
|
core_events_callback(void *object, uint32_t id, int seq)
|
||||||
|
{
|
||||||
|
if (id == PW_ID_CORE && seq == hotplug_init_seq_val) {
|
||||||
|
PIPEWIRE_pw_thread_loop_lock(hotplug_loop);
|
||||||
|
|
||||||
|
/* This core listener is no longer needed. */
|
||||||
|
spa_hook_remove(&hotplug_core_listener);
|
||||||
|
|
||||||
|
/* Signal that the initial device list is populated */
|
||||||
|
SDL_AtomicSet(&hotplug_init_complete, 1);
|
||||||
|
PIPEWIRE_pw_thread_loop_signal(hotplug_loop, false);
|
||||||
|
|
||||||
|
PIPEWIRE_pw_thread_loop_unlock(hotplug_loop);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
const struct pw_core_events core_events = { PW_VERSION_CORE_EVENTS, .done = core_events_callback };
|
||||||
|
|
||||||
|
static int
|
||||||
|
hotplug_loop_init()
|
||||||
|
{
|
||||||
|
int res;
|
||||||
|
|
||||||
|
spa_list_init(&device_list);
|
||||||
|
|
||||||
|
hotplug_loop = PIPEWIRE_pw_thread_loop_new("SDLAudioHotplug", NULL);
|
||||||
|
if (hotplug_loop == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to create hotplug detection loop (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
hotplug_context = PIPEWIRE_pw_context_new(PIPEWIRE_pw_thread_loop_get_loop(hotplug_loop), NULL, 0);
|
||||||
|
if (hotplug_context == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to create hotplug detection context (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
hotplug_core = PIPEWIRE_pw_context_connect(hotplug_context, NULL, 0);
|
||||||
|
if (hotplug_core == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to connect hotplug detection context (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
hotplug_registry = pw_core_get_registry(hotplug_core, PW_VERSION_REGISTRY, 0);
|
||||||
|
if (hotplug_registry == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to acquire hotplug detection registry (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
spa_zero(hotplug_registry_listener);
|
||||||
|
pw_registry_add_listener(hotplug_registry, &hotplug_registry_listener, ®istry_events, NULL);
|
||||||
|
|
||||||
|
spa_zero(hotplug_core_listener);
|
||||||
|
pw_core_add_listener(hotplug_core, &hotplug_core_listener, &core_events, NULL);
|
||||||
|
|
||||||
|
hotplug_init_seq_val = pw_core_sync(hotplug_core, PW_ID_CORE, 0);
|
||||||
|
|
||||||
|
res = PIPEWIRE_pw_thread_loop_start(hotplug_loop);
|
||||||
|
if (res != 0) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to start hotplug detection loop");
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
hotplug_loop_destroy()
|
||||||
|
{
|
||||||
|
if (hotplug_loop) {
|
||||||
|
PIPEWIRE_pw_thread_loop_stop(hotplug_loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (hotplug_registry) {
|
||||||
|
PIPEWIRE_pw_proxy_destroy((struct pw_proxy *)hotplug_registry);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (hotplug_core) {
|
||||||
|
PIPEWIRE_pw_core_disconnect(hotplug_core);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (hotplug_context) {
|
||||||
|
PIPEWIRE_pw_context_destroy(hotplug_context);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (hotplug_loop) {
|
||||||
|
PIPEWIRE_pw_thread_loop_destroy(hotplug_loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
release_device_list();
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
PIPEWIRE_DetectDevices()
|
||||||
|
{
|
||||||
|
struct connected_device *dev;
|
||||||
|
|
||||||
|
PIPEWIRE_pw_thread_loop_lock(hotplug_loop);
|
||||||
|
|
||||||
|
/* Wait until the initial registry enumeration is complete */
|
||||||
|
if (!SDL_AtomicGet(&hotplug_init_complete)) {
|
||||||
|
PIPEWIRE_pw_thread_loop_wait(hotplug_loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
spa_list_for_each (dev, &device_list, link) {
|
||||||
|
SDL_AddAudioDevice(dev->is_capture, dev->name, PW_ID_TO_HANDLE(dev->id));
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_AtomicSet(&hotplug_events_enabled, 1);
|
||||||
|
|
||||||
|
PIPEWIRE_pw_thread_loop_unlock(hotplug_loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Channel maps that match the order in SDL_Audio.h */
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_1[] = { SPA_AUDIO_CHANNEL_MONO };
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_2[] = { SPA_AUDIO_CHANNEL_FL, SPA_AUDIO_CHANNEL_FR };
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_3[] = { SPA_AUDIO_CHANNEL_FL, SPA_AUDIO_CHANNEL_FR,
|
||||||
|
SPA_AUDIO_CHANNEL_LFE };
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_4[] = { SPA_AUDIO_CHANNEL_FL, SPA_AUDIO_CHANNEL_FR, SPA_AUDIO_CHANNEL_SL,
|
||||||
|
SPA_AUDIO_CHANNEL_SR };
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_5[] = { SPA_AUDIO_CHANNEL_FL, SPA_AUDIO_CHANNEL_FR, SPA_AUDIO_CHANNEL_FC,
|
||||||
|
SPA_AUDIO_CHANNEL_SL, SPA_AUDIO_CHANNEL_SR };
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_6[] = {
|
||||||
|
SPA_AUDIO_CHANNEL_FL, SPA_AUDIO_CHANNEL_FR, SPA_AUDIO_CHANNEL_FC,
|
||||||
|
SPA_AUDIO_CHANNEL_LFE, SPA_AUDIO_CHANNEL_SL, SPA_AUDIO_CHANNEL_SR
|
||||||
|
};
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_7[] = { SPA_AUDIO_CHANNEL_FL, SPA_AUDIO_CHANNEL_FR, SPA_AUDIO_CHANNEL_FC,
|
||||||
|
SPA_AUDIO_CHANNEL_LFE, SPA_AUDIO_CHANNEL_RC, SPA_AUDIO_CHANNEL_SL,
|
||||||
|
SPA_AUDIO_CHANNEL_SR };
|
||||||
|
static const enum spa_audio_channel PIPEWIRE_channel_map_8[] = { SPA_AUDIO_CHANNEL_FL, SPA_AUDIO_CHANNEL_FR, SPA_AUDIO_CHANNEL_FC,
|
||||||
|
SPA_AUDIO_CHANNEL_LFE, SPA_AUDIO_CHANNEL_RL, SPA_AUDIO_CHANNEL_RR,
|
||||||
|
SPA_AUDIO_CHANNEL_SL, SPA_AUDIO_CHANNEL_SR };
|
||||||
|
|
||||||
|
#define COPY_CHANNEL_MAP(c) SDL_memcpy(info->position, PIPEWIRE_channel_map_##c, sizeof(PIPEWIRE_channel_map_##c))
|
||||||
|
|
||||||
|
static void
|
||||||
|
initialize_spa_info(const SDL_AudioSpec *spec, struct spa_audio_info_raw *info)
|
||||||
|
{
|
||||||
|
info->channels = spec->channels;
|
||||||
|
info->rate = spec->freq;
|
||||||
|
|
||||||
|
switch (spec->channels) {
|
||||||
|
case 1:
|
||||||
|
COPY_CHANNEL_MAP(1);
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
COPY_CHANNEL_MAP(2);
|
||||||
|
break;
|
||||||
|
case 3:
|
||||||
|
COPY_CHANNEL_MAP(3);
|
||||||
|
break;
|
||||||
|
case 4:
|
||||||
|
COPY_CHANNEL_MAP(4);
|
||||||
|
break;
|
||||||
|
case 5:
|
||||||
|
COPY_CHANNEL_MAP(5);
|
||||||
|
break;
|
||||||
|
case 6:
|
||||||
|
COPY_CHANNEL_MAP(6);
|
||||||
|
break;
|
||||||
|
case 7:
|
||||||
|
COPY_CHANNEL_MAP(7);
|
||||||
|
break;
|
||||||
|
case 8:
|
||||||
|
COPY_CHANNEL_MAP(8);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Pipewire natively supports all of SDL's sample formats */
|
||||||
|
switch (spec->format) {
|
||||||
|
case AUDIO_U8:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_U8;
|
||||||
|
break;
|
||||||
|
case AUDIO_S8:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_S8;
|
||||||
|
break;
|
||||||
|
case AUDIO_U16LSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_U16_LE;
|
||||||
|
break;
|
||||||
|
case AUDIO_S16LSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_S16_LE;
|
||||||
|
break;
|
||||||
|
case AUDIO_U16MSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_U16_BE;
|
||||||
|
break;
|
||||||
|
case AUDIO_S16MSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_S16_BE;
|
||||||
|
break;
|
||||||
|
case AUDIO_S32LSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_S32_LE;
|
||||||
|
break;
|
||||||
|
case AUDIO_S32MSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_S32_BE;
|
||||||
|
break;
|
||||||
|
case AUDIO_F32LSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_F32_LE;
|
||||||
|
break;
|
||||||
|
case AUDIO_F32MSB:
|
||||||
|
info->format = SPA_AUDIO_FORMAT_F32_BE;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
output_callback(void *data)
|
||||||
|
{
|
||||||
|
struct pw_buffer * pw_buf;
|
||||||
|
struct spa_buffer *spa_buf;
|
||||||
|
Uint8 * dst;
|
||||||
|
|
||||||
|
_THIS = (SDL_AudioDevice *)data;
|
||||||
|
struct pw_stream *stream = this->hidden->stream;
|
||||||
|
|
||||||
|
/* Shutting down, don't do anything */
|
||||||
|
if (SDL_AtomicGet(&this->shutdown)) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* See if a buffer is available */
|
||||||
|
if ((pw_buf = PIPEWIRE_pw_stream_dequeue_buffer(stream)) == NULL) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
spa_buf = pw_buf->buffer;
|
||||||
|
|
||||||
|
if (spa_buf->datas[0].data == NULL) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* If the device is disabled, write silence to the stream buffer
|
||||||
|
* and run the callback with the work buffer to keep the callback
|
||||||
|
* firing regularly in case the audio is being used as a timer.
|
||||||
|
*/
|
||||||
|
if (SDL_AtomicGet(&this->enabled)) {
|
||||||
|
dst = spa_buf->datas[0].data;
|
||||||
|
} else {
|
||||||
|
dst = this->work_buffer;
|
||||||
|
SDL_memset(spa_buf->datas[0].data, this->spec.silence, this->spec.size);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!SDL_AtomicGet(&this->paused)) {
|
||||||
|
if (!this->stream) {
|
||||||
|
SDL_LockMutex(this->mixer_lock);
|
||||||
|
this->callbackspec.callback(this->spec.userdata, dst, this->callbackspec.size);
|
||||||
|
SDL_UnlockMutex(this->mixer_lock);
|
||||||
|
} else {
|
||||||
|
int got;
|
||||||
|
|
||||||
|
/* Fire the callback until we have enough to fill a buffer */
|
||||||
|
while (SDL_AudioStreamAvailable(this->stream) < this->spec.size) {
|
||||||
|
SDL_LockMutex(this->mixer_lock);
|
||||||
|
(*this->callbackspec.callback)(this->callbackspec.userdata, this->work_buffer, this->callbackspec.size);
|
||||||
|
SDL_UnlockMutex(this->mixer_lock);
|
||||||
|
|
||||||
|
SDL_AudioStreamPut(this->stream, this->work_buffer, this->callbackspec.size);
|
||||||
|
}
|
||||||
|
|
||||||
|
got = SDL_AudioStreamGet(this->stream, dst, this->spec.size);
|
||||||
|
SDL_assert(got == this->spec.size);
|
||||||
|
}
|
||||||
|
} else if (dst != this->work_buffer) {
|
||||||
|
SDL_memset(dst, this->spec.silence, this->spec.size);
|
||||||
|
}
|
||||||
|
|
||||||
|
spa_buf->datas[0].chunk->offset = 0;
|
||||||
|
spa_buf->datas[0].chunk->stride = this->hidden->stride;
|
||||||
|
spa_buf->datas[0].chunk->size = this->spec.size;
|
||||||
|
|
||||||
|
PIPEWIRE_pw_stream_queue_buffer(stream, pw_buf);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
input_callback(void *data)
|
||||||
|
{
|
||||||
|
struct pw_buffer * pw_buf;
|
||||||
|
struct spa_buffer *spa_buf;
|
||||||
|
Uint8 * src;
|
||||||
|
_THIS = (SDL_AudioDevice *)data;
|
||||||
|
struct pw_stream *stream = this->hidden->stream;
|
||||||
|
|
||||||
|
/* Shutting down, don't do anything */
|
||||||
|
if (SDL_AtomicGet(&this->shutdown)) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
pw_buf = PIPEWIRE_pw_stream_dequeue_buffer(stream);
|
||||||
|
if (!pw_buf) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
spa_buf = pw_buf->buffer;
|
||||||
|
|
||||||
|
if ((src = (Uint8 *)spa_buf->datas[0].data) == NULL) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (SDL_AtomicGet(&this->enabled)) {
|
||||||
|
/* The first packet might be undersized, so pad the start with silence */
|
||||||
|
if (spa_buf->datas[0].chunk->size < this->spec.size) {
|
||||||
|
const Uint32 diff = this->spec.size - spa_buf->datas[0].chunk->size;
|
||||||
|
SDL_memmove(src + diff, src, diff);
|
||||||
|
SDL_memset(src, this->spec.silence, diff);
|
||||||
|
}
|
||||||
|
} else { /* Zero the buffer if the stream is disabled. */
|
||||||
|
SDL_memset(src, this->spec.silence, this->spec.size);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!this->stream) {
|
||||||
|
/* No intermediate stream, call the application callback directly */
|
||||||
|
if (!SDL_AtomicGet(&this->paused)) {
|
||||||
|
SDL_LockMutex(this->mixer_lock);
|
||||||
|
this->callbackspec.callback(this->callbackspec.userdata, src, this->callbackspec.size);
|
||||||
|
SDL_UnlockMutex(this->mixer_lock);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
SDL_AudioStreamPut(this->stream, src, spa_buf->datas[0].chunk->size);
|
||||||
|
|
||||||
|
if (!SDL_AtomicGet(&this->paused)) {
|
||||||
|
/* Fire the callback as long as we have enough data to do so. */
|
||||||
|
while (SDL_AudioStreamAvailable(this->stream) >= this->callbackspec.size) {
|
||||||
|
const Uint32 got = SDL_AudioStreamGet(this->stream, this->work_buffer, this->callbackspec.size);
|
||||||
|
|
||||||
|
SDL_assert(got == this->callbackspec.size);
|
||||||
|
|
||||||
|
SDL_LockMutex(this->mixer_lock);
|
||||||
|
this->callbackspec.callback(this->callbackspec.userdata, this->work_buffer, this->callbackspec.size);
|
||||||
|
SDL_UnlockMutex(this->mixer_lock);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
/* Dummy loop to dump the buffered data while paused */
|
||||||
|
while (SDL_AudioStreamAvailable(this->stream) >= this->callbackspec.size) {
|
||||||
|
const Uint32 got = SDL_AudioStreamGet(this->stream, this->work_buffer, this->callbackspec.size);
|
||||||
|
SDL_assert(got == this->callbackspec.size);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
PIPEWIRE_pw_stream_queue_buffer(stream, pw_buf);
|
||||||
|
}
|
||||||
|
|
||||||
|
const struct pw_stream_events stream_output_events = { PW_VERSION_STREAM_EVENTS, .process = output_callback };
|
||||||
|
const struct pw_stream_events stream_input_events = { PW_VERSION_STREAM_EVENTS, .process = input_callback };
|
||||||
|
|
||||||
|
static int
|
||||||
|
PIPEWIRE_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* NOTE: The PW_STREAM_FLAG_RT_PROCESS flag can be set to call the stream
|
||||||
|
* processing callback from the realtime thread, however it comes with some
|
||||||
|
* caveats: no file IO, allocations, locking or other blocking operations
|
||||||
|
* must occur in the mixer callback. As this cannot be guaranteed when the
|
||||||
|
* callback is in the calling application, this flag is omitted.
|
||||||
|
*/
|
||||||
|
static const enum pw_stream_flags STREAM_FLAGS = PW_STREAM_FLAG_AUTOCONNECT | PW_STREAM_FLAG_MAP_BUFFERS;
|
||||||
|
|
||||||
|
char thread_name[128];
|
||||||
|
Uint8 pod_buffer[1024];
|
||||||
|
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(pod_buffer, sizeof(pod_buffer));
|
||||||
|
struct spa_audio_info_raw spa_info = { 0 };
|
||||||
|
const struct spa_pod * params = NULL;
|
||||||
|
struct SDL_PrivateAudioData *priv;
|
||||||
|
struct pw_properties * props;
|
||||||
|
const char * stream_name, *stream_role;
|
||||||
|
const Uint32 device_id = this->handle == NULL ? PW_ID_ANY : PW_HANDLE_TO_ID(this->handle);
|
||||||
|
int min_period, adjusted_samples;
|
||||||
|
enum pw_stream_state state;
|
||||||
|
int res;
|
||||||
|
|
||||||
|
/* Get the hints for the stream name and role */
|
||||||
|
stream_name = SDL_GetHint(SDL_HINT_AUDIO_DEVICE_STREAM_NAME);
|
||||||
|
if (!stream_name || *stream_name == '\0') {
|
||||||
|
stream_name = "Audio Stream";
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* 'Music' is the default used internally by Pipewire and it's modules,
|
||||||
|
* but 'Game' seems more appropriate for the majority of SDL applications.
|
||||||
|
*/
|
||||||
|
stream_role = SDL_GetHint(SDL_HINT_AUDIO_DEVICE_STREAM_ROLE);
|
||||||
|
if (!stream_role || *stream_role == '\0') {
|
||||||
|
stream_role = "Game";
|
||||||
|
}
|
||||||
|
/* Initialize the Pipewire stream info from the SDL audio spec */
|
||||||
|
initialize_spa_info(&this->spec, &spa_info);
|
||||||
|
params = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat, &spa_info);
|
||||||
|
if (params == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to set audio format parameters");
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Clamp the sample count to sane values */
|
||||||
|
min_period = PW_MIN_SAMPLES * SPA_MAX(this->spec.freq / 48000, 1);
|
||||||
|
adjusted_samples = SPA_CLAMP(this->spec.samples, min_period, PW_MAX_SAMPLES);
|
||||||
|
|
||||||
|
if ((priv = SDL_malloc(sizeof(struct SDL_PrivateAudioData))) == NULL) {
|
||||||
|
return SDL_OutOfMemory();
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_zerop(priv);
|
||||||
|
this->hidden = priv;
|
||||||
|
|
||||||
|
/* Size of a single audio frame in bytes */
|
||||||
|
priv->stride = (SDL_AUDIO_BITSIZE(this->spec.format) >> 3) * this->spec.channels;
|
||||||
|
|
||||||
|
if (this->spec.samples != adjusted_samples) {
|
||||||
|
this->spec.samples = adjusted_samples;
|
||||||
|
this->spec.size = this->spec.samples * priv->stride;
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_snprintf(thread_name, sizeof(thread_name), "SDLAudio%c%ld", (iscapture) ? 'C' : 'P', (long)handle);
|
||||||
|
priv->loop = PIPEWIRE_pw_thread_loop_new(thread_name, NULL);
|
||||||
|
if (priv->loop == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to create stream loop (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Load the rtkit module so Pipewire can set the loop thread to the appropriate priority */
|
||||||
|
props = PIPEWIRE_pw_properties_new(PW_KEY_CONTEXT_PROFILE_MODULES, "default,rtkit", NULL);
|
||||||
|
if (props == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to create stream context properties (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* On success, the context owns the properties object and will free it at destruction time. */
|
||||||
|
priv->context = PIPEWIRE_pw_context_new(PIPEWIRE_pw_thread_loop_get_loop(priv->loop), props, 0);
|
||||||
|
if (priv->context == NULL) {
|
||||||
|
PIPEWIRE_pw_properties_free(props);
|
||||||
|
return SDL_SetError("Pipewire: Failed to create stream context (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
props = PIPEWIRE_pw_properties_new(NULL, NULL);
|
||||||
|
if (props == NULL) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to create stream properties (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
PIPEWIRE_pw_properties_set(props, PW_KEY_MEDIA_TYPE, "Audio");
|
||||||
|
PIPEWIRE_pw_properties_set(props, PW_KEY_MEDIA_CATEGORY, iscapture ? "Capture" : "Playback");
|
||||||
|
PIPEWIRE_pw_properties_set(props, PW_KEY_MEDIA_ROLE, stream_role);
|
||||||
|
PIPEWIRE_pw_properties_set(props, PW_KEY_NODE_NAME, stream_name);
|
||||||
|
PIPEWIRE_pw_properties_set(props, PW_KEY_NODE_DESCRIPTION, stream_name);
|
||||||
|
PIPEWIRE_pw_properties_setf(props, PW_KEY_NODE_LATENCY, "%u/%i", this->spec.samples, this->spec.freq);
|
||||||
|
PIPEWIRE_pw_properties_set(props, PW_KEY_NODE_ALWAYS_PROCESS, "true");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Create the new stream
|
||||||
|
* On success, the stream owns the properties object and will free it at destruction time.
|
||||||
|
*/
|
||||||
|
priv->stream = PIPEWIRE_pw_stream_new_simple(PIPEWIRE_pw_thread_loop_get_loop(priv->loop), stream_name, props,
|
||||||
|
iscapture ? &stream_input_events : &stream_output_events, this);
|
||||||
|
if (priv->stream == NULL) {
|
||||||
|
PIPEWIRE_pw_properties_free(props);
|
||||||
|
return SDL_SetError("Pipewire: Failed to create stream (%i)", errno);
|
||||||
|
}
|
||||||
|
|
||||||
|
res = PIPEWIRE_pw_stream_connect(priv->stream, iscapture ? PW_DIRECTION_INPUT : PW_DIRECTION_OUTPUT, device_id, STREAM_FLAGS,
|
||||||
|
¶ms, 1);
|
||||||
|
if (res != 0) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to connect stream");
|
||||||
|
}
|
||||||
|
|
||||||
|
res = PIPEWIRE_pw_thread_loop_start(priv->loop);
|
||||||
|
if (res != 0) {
|
||||||
|
return SDL_SetError("Pipewire: Failed to start stream loop");
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Wait until the stream is either running or failed */
|
||||||
|
do {
|
||||||
|
const char *error;
|
||||||
|
state = PIPEWIRE_pw_stream_get_state(priv->stream, &error);
|
||||||
|
|
||||||
|
if (state == PW_STREAM_STATE_ERROR) {
|
||||||
|
return SDL_SetError("Pipewire: Stream error: %s", error);
|
||||||
|
}
|
||||||
|
} while (state != PW_STREAM_STATE_STREAMING);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void PIPEWIRE_CloseDevice(_THIS)
|
||||||
|
{
|
||||||
|
if (this->hidden->loop) {
|
||||||
|
PIPEWIRE_pw_thread_loop_stop(this->hidden->loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (this->hidden->stream) {
|
||||||
|
PIPEWIRE_pw_stream_destroy(this->hidden->stream);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (this->hidden->context) {
|
||||||
|
PIPEWIRE_pw_context_destroy(this->hidden->context);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (this->hidden->loop) {
|
||||||
|
PIPEWIRE_pw_thread_loop_destroy(this->hidden->loop);
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_free(this->hidden);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
PIPEWIRE_Deinitialize()
|
||||||
|
{
|
||||||
|
if (pipewire_initialized) {
|
||||||
|
hotplug_loop_destroy();
|
||||||
|
deinit_pipewire_library();
|
||||||
|
pipewire_initialized = SDL_FALSE;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
PIPEWIRE_Init(SDL_AudioDriverImpl *impl)
|
||||||
|
{
|
||||||
|
if (!pipewire_initialized) {
|
||||||
|
if (init_pipewire_library() < 0) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
pipewire_initialized = SDL_TRUE;
|
||||||
|
|
||||||
|
if (hotplug_loop_init() < 0) {
|
||||||
|
PIPEWIRE_Deinitialize();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Set the function pointers */
|
||||||
|
impl->DetectDevices = PIPEWIRE_DetectDevices;
|
||||||
|
impl->OpenDevice = PIPEWIRE_OpenDevice;
|
||||||
|
impl->CloseDevice = PIPEWIRE_CloseDevice;
|
||||||
|
impl->Deinitialize = PIPEWIRE_Deinitialize;
|
||||||
|
|
||||||
|
impl->HasCaptureSupport = 1;
|
||||||
|
impl->ProvidesOwnCallbackThread = 1;
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
AudioBootStrap PIPEWIRE_bootstrap = { "pipewire", "Pipewire", PIPEWIRE_Init, 0 };
|
||||||
|
|
||||||
|
#endif /* SDL_AUDIO_DRIVER_PIPEWIRE */
|
||||||
|
|
@ -0,0 +1,42 @@
|
||||||
|
/*
|
||||||
|
Simple DirectMedia Layer
|
||||||
|
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
|
||||||
|
|
||||||
|
This software is provided 'as-is', without any express or implied
|
||||||
|
warranty. In no event will the authors be held liable for any damages
|
||||||
|
arising from the use of this software.
|
||||||
|
|
||||||
|
Permission is granted to anyone to use this software for any purpose,
|
||||||
|
including commercial applications, and to alter it and redistribute it
|
||||||
|
freely, subject to the following restrictions:
|
||||||
|
|
||||||
|
1. The origin of this software must not be misrepresented; you must not
|
||||||
|
claim that you wrote the original software. If you use this software
|
||||||
|
in a product, an acknowledgment in the product documentation would be
|
||||||
|
appreciated but is not required.
|
||||||
|
2. Altered source versions must be plainly marked as such, and must not be
|
||||||
|
misrepresented as being the original software.
|
||||||
|
3. This notice may not be removed or altered from any source distribution.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "../../SDL_internal.h"
|
||||||
|
|
||||||
|
#ifndef SDL_pipewire_h_
|
||||||
|
#define SDL_pipewire_h_
|
||||||
|
|
||||||
|
#include "../SDL_sysaudio.h"
|
||||||
|
#include <pipewire/pipewire.h>
|
||||||
|
|
||||||
|
/* Hidden "this" pointer for the audio functions */
|
||||||
|
#define _THIS SDL_AudioDevice* this
|
||||||
|
|
||||||
|
struct SDL_PrivateAudioData
|
||||||
|
{
|
||||||
|
struct pw_thread_loop* loop;
|
||||||
|
struct pw_stream* stream;
|
||||||
|
struct pw_context* context;
|
||||||
|
|
||||||
|
Sint32 stride; /* Bytes-per-frame */
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif /* SDL_pipewire_h_ */
|
||||||
Loading…
Reference in New Issue