geemili
/
SDL
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

reverted jack audio backend removal.

main
Ozkan Sezer 2022-11-23 06:50:20 +03:00
parent 8a16761cb5
commit 016b757311
13 changed files with 716 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.github/workflows/main.yml vendored
View File

@ -45,7 +45,7 @@ jobs:
sudo apt-get update
sudo apt-get install build-essential git make autoconf automake libtool \
pkg-config cmake ninja-build gnome-desktop-testing libasound2-dev libpulse-dev \
libsndio-dev libsamplerate0-dev libx11-dev libxext-dev \
libaudio-dev libjack-dev libsndio-dev libsamplerate0-dev libx11-dev libxext-dev \
libxrandr-dev libxcursor-dev libxfixes-dev libxi-dev libxss-dev libwayland-dev \
libxkbcommon-dev libdrm-dev libgbm-dev libgl1-mesa-dev libgles2-mesa-dev \
libegl1-mesa-dev libdbus-1-dev libibus-1.0-dev libudev-dev fcitx-libs-dev

2
.github/workflows/vmactions.yml vendored
View File

@ -32,8 +32,10 @@ jobs:
evdev-proto \
libinotify \
alsa-lib \
jackit \
pipewire \
pulseaudio \
sndio \
dbus \
zh-fcitx \
ibus \

3
CMakeLists.txt
View File

@ -452,6 +452,8 @@ dep_option(SDL_PTHREADS_SEM "Use pthread semaphores" ON "SDL_PTHREADS" OF
dep_option(SDL_OSS "Support the OSS audio API" ON "UNIX_SYS OR RISCOS" OFF)
set_option(SDL_ALSA "Support the ALSA audio API" ${UNIX_SYS})
dep_option(SDL_ALSA_SHARED "Dynamically load ALSA audio support" ON "SDL_ALSA" OFF)
set_option(SDL_JACK "Support the JACK audio API" ${UNIX_SYS})
dep_option(SDL_JACK_SHARED "Dynamically load JACK audio support" ON "SDL_JACK" OFF)
set_option(SDL_PIPEWIRE "Use Pipewire audio" ${UNIX_SYS})
dep_option(SDL_PIPEWIRE_SHARED "Dynamically load Pipewire support" ON "SDL_PIPEWIRE" OFF)
set_option(SDL_PULSEAUDIO "Use PulseAudio" ${UNIX_SYS})
@ -1393,6 +1395,7 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
endif()
CheckOSS()
CheckALSA()
CheckJACK()
CheckPipewire()
CheckPulseAudio()
CheckSNDIO()

29
cmake/sdlchecks.cmake
View File

@ -194,6 +194,35 @@ macro(CheckSNDIO)
endif()
endmacro()
# Requires:
# - PkgCheckModules
# Optional:
# - SDL_JACK_SHARED opt
# - HAVE_SDL_LOADSO opt
macro(CheckJACK)
if(SDL_JACK)
pkg_check_modules(PKG_JACK jack)
if(PKG_JACK_FOUND)
set(HAVE_JACK TRUE)
file(GLOB JACK_SOURCES ${SDL3_SOURCE_DIR}/src/audio/jack/*.c)
list(APPEND SOURCE_FILES ${JACK_SOURCES})
set(SDL_AUDIO_DRIVER_JACK 1)
list(APPEND EXTRA_CFLAGS ${PKG_JACK_CFLAGS})
if(SDL_JACK_SHARED AND NOT HAVE_SDL_LOADSO)
message_warn("You must have SDL_LoadObject() support for dynamic JACK audio loading")
endif()
FindLibraryAndSONAME("jack" LIBDIRS ${PKG_JACK_LIBRARY_DIRS})
if(SDL_JACK_SHARED AND JACK_LIB AND HAVE_SDL_LOADSO)
set(SDL_AUDIO_DRIVER_JACK_DYNAMIC "\"${JACK_LIB_SONAME}\"")
set(HAVE_JACK_SHARED TRUE)
else()
list(APPEND EXTRA_LDFLAGS ${PKG_JACK_LDFLAGS})
endif()
set(HAVE_SDL_AUDIO TRUE)
endif()
endif()
endmacro()
# Requires:
# - SDL_LIBSAMPLERATE
# Optional:

139
configure vendored
View File

@ -710,6 +710,8 @@ PULSEAUDIO_LIBS
PULSEAUDIO_CFLAGS
PIPEWIRE_LIBS
PIPEWIRE_CFLAGS
JACK_LIBS
JACK_CFLAGS
ALSA_LIBS
ALSA_CFLAGS
ALLOCA
@ -868,6 +870,8 @@ with_alsa_prefix
with_alsa_inc_prefix
enable_alsatest
enable_alsa_shared
enable_jack
enable_jack_shared
enable_pipewire
enable_pipewire_shared
enable_pulseaudio
@ -948,6 +952,8 @@ PKG_CONFIG
PKG_CONFIG_PATH
PKG_CONFIG_LIBDIR
CPP
JACK_CFLAGS
JACK_LIBS
PIPEWIRE_CFLAGS
PIPEWIRE_LIBS
PULSEAUDIO_CFLAGS
@ -1642,6 +1648,8 @@ Optional Features:
--enable-alsa support the ALSA audio API [default=yes]
--disable-alsatest Do not try to compile and run a test Alsa program
--enable-alsa-shared dynamically load ALSA audio support [default=yes]
--enable-jack use JACK audio [default=yes]
--enable-jack-shared dynamically load JACK audio support [default=yes]
--enable-pipewire use Pipewire audio [default=yes]
--enable-pipewire-shared
dynamically load Pipewire support [default=yes]
@ -1767,6 +1775,8 @@ Some influential environment variables:
PKG_CONFIG_LIBDIR
path overriding pkg-config's built-in search path
CPP C preprocessor
JACK_CFLAGS C compiler flags for JACK, overriding pkg-config
JACK_LIBS linker flags for JACK, overriding pkg-config
PIPEWIRE_CFLAGS
C compiler flags for PIPEWIRE, overriding pkg-config
PIPEWIRE_LIBS
@ -21252,6 +21262,134 @@ printf "%s\n" "#define SDL_AUDIO_DRIVER_ALSA_DYNAMIC \"$alsa_lib\"" >>confdefs.h
fi
}
CheckJACK()
{
# Check whether --enable-jack was given.
if test ${enable_jack+y}
then :
enableval=$enable_jack;
else $as_nop
enable_jack=yes
fi
if test x$enable_audio = xyes -a x$enable_jack = xyes; then
pkg_failed=no
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for jack >= 0.125" >&5
printf %s "checking for jack >= 0.125... " >&6; }
if test -n "$JACK_CFLAGS"; then
pkg_cv_JACK_CFLAGS="$JACK_CFLAGS"
elif test -n "$PKG_CONFIG"; then
if test -n "$PKG_CONFIG" && \
{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"jack >= 0.125\""; } >&5
($PKG_CONFIG --exists --print-errors "jack >= 0.125") 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; then
pkg_cv_JACK_CFLAGS=`$PKG_CONFIG --cflags "jack >= 0.125" 2>/dev/null`
test "x$?" != "x0" && pkg_failed=yes
else
pkg_failed=yes
fi
else
pkg_failed=untried
fi
if test -n "$JACK_LIBS"; then
pkg_cv_JACK_LIBS="$JACK_LIBS"
elif test -n "$PKG_CONFIG"; then
if test -n "$PKG_CONFIG" && \
{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"jack >= 0.125\""; } >&5
($PKG_CONFIG --exists --print-errors "jack >= 0.125") 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; then
pkg_cv_JACK_LIBS=`$PKG_CONFIG --libs "jack >= 0.125" 2>/dev/null`
test "x$?" != "x0" && pkg_failed=yes
else
pkg_failed=yes
fi
else
pkg_failed=untried
fi
if test $pkg_failed = yes; then
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
printf "%s\n" "no" >&6; }
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
_pkg_short_errors_supported=yes
else
_pkg_short_errors_supported=no
fi
if test $_pkg_short_errors_supported = yes; then
JACK_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "jack >= 0.125" 2>&1`
else
JACK_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "jack >= 0.125" 2>&1`
fi
# Put the nasty error message in config.log where it belongs
echo "$JACK_PKG_ERRORS" >&5
audio_jack=no
elif test $pkg_failed = untried; then
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
printf "%s\n" "no" >&6; }
audio_jack=no
else
JACK_CFLAGS=$pkg_cv_JACK_CFLAGS
JACK_LIBS=$pkg_cv_JACK_LIBS
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
printf "%s\n" "yes" >&6; }
audio_jack=yes
fi
if test x$audio_jack = xyes; then
# Check whether --enable-jack-shared was given.
if test ${enable_jack_shared+y}
then :
enableval=$enable_jack_shared;
else $as_nop
enable_jack_shared=yes
fi
jack_lib=`find_lib "libjack.so.*" "$JACK_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`
printf "%s\n" "#define SDL_AUDIO_DRIVER_JACK 1" >>confdefs.h
SOURCES="$SOURCES $srcdir/src/audio/jack/*.c"
EXTRA_CFLAGS="$EXTRA_CFLAGS $JACK_CFLAGS"
if test x$have_loadso != xyes && \
test x$enable_jack_shared = xyes; then
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: You must have SDL_LoadObject() support for dynamic JACK audio loading" >&5
printf "%s\n" "$as_me: WARNING: You must have SDL_LoadObject() support for dynamic JACK audio loading" >&2;}
fi
if test x$have_loadso = xyes && \
test x$enable_jack_shared = xyes && test x$jack_lib != x; then
echo "-- dynamic libjack -> $jack_lib"
printf "%s\n" "#define SDL_AUDIO_DRIVER_JACK_DYNAMIC \"$jack_lib\"" >>confdefs.h
SUMMARY_audio="${SUMMARY_audio} jack(dynamic)"
case "$host" in
# On Solaris, jack must be linked deferred explicitly
# to prevent undefined symbol failures.
*-*-solaris*)
JACK_LIBS=`echo $JACK_LIBS | sed 's/\-l/-Wl,-l/g'`
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $JACK_LIBS -Wl,-znodeferred"
esac
else
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $JACK_LIBS"
SUMMARY_audio="${SUMMARY_audio} jack"
fi
have_audio=yes
fi
fi
}
CheckPipewire()
{
# Check whether --enable-pipewire was given.
@ -27145,6 +27283,7 @@ printf "%s\n" "#define SDL_VIDEO_DRIVER_ANDROID 1" >>confdefs.h
CheckALSA
CheckPipewire
CheckPulseAudio
CheckJACK
CheckSNDIO
CheckLibSampleRate
# Need to check for Raspberry PI first and add platform specific compiler flags, otherwise the test for GLES fails!

45
configure.ac
View File

@ -988,6 +988,50 @@ CheckALSA()
fi
}
dnl Find JACK Audio
CheckJACK()
{
AC_ARG_ENABLE(jack,
[AS_HELP_STRING([--enable-jack], [use JACK audio [default=yes]])],
, enable_jack=yes)
if test x$enable_audio = xyes -a x$enable_jack = xyes; then
PKG_CHECK_MODULES([JACK], [jack >= 0.125], audio_jack=yes, audio_jack=no)
if test x$audio_jack = xyes; then
AC_ARG_ENABLE(jack-shared,
[AS_HELP_STRING([--enable-jack-shared], [dynamically load JACK audio support [default=yes]])],
, enable_jack_shared=yes)
jack_lib=[`find_lib "libjack.so.*" "$JACK_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
AC_DEFINE(SDL_AUDIO_DRIVER_JACK, 1, [ ])
SOURCES="$SOURCES $srcdir/src/audio/jack/*.c"
EXTRA_CFLAGS="$EXTRA_CFLAGS $JACK_CFLAGS"
if test x$have_loadso != xyes && \
test x$enable_jack_shared = xyes; then
AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic JACK audio loading])
fi
if test x$have_loadso = xyes && \
test x$enable_jack_shared = xyes && test x$jack_lib != x; then
echo "-- dynamic libjack -> $jack_lib"
AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_JACK_DYNAMIC, "$jack_lib", [ ])
SUMMARY_audio="${SUMMARY_audio} jack(dynamic)"
case "$host" in
# On Solaris, jack must be linked deferred explicitly
# to prevent undefined symbol failures.
*-*-solaris*)
JACK_LIBS=`echo $JACK_LIBS | sed 's/\-l/-Wl,-l/g'`
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $JACK_LIBS -Wl,-znodeferred"
esac
else
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $JACK_LIBS"
SUMMARY_audio="${SUMMARY_audio} jack"
fi
have_audio=yes
fi
fi
}
dnl Find Pipewire
CheckPipewire()
{
@ -3419,6 +3463,7 @@ case "$host" in
CheckALSA
CheckPipewire
CheckPulseAudio
CheckJACK
CheckSNDIO
CheckLibSampleRate
# Need to check for Raspberry PI first and add platform specific compiler flags, otherwise the test for GLES fails!

4
docs/README-linux.md
View File

@ -16,7 +16,7 @@ Ubuntu 18.04, all available features enabled:
sudo apt-get install build-essential git make autoconf automake libtool \
pkg-config cmake ninja-build gnome-desktop-testing libasound2-dev libpulse-dev \
libaudio-dev libsamplerate0-dev libx11-dev libxext-dev \
libaudio-dev libjack-dev libsndio-dev libsamplerate0-dev libx11-dev libxext-dev \
libxrandr-dev libxcursor-dev libxfixes-dev libxi-dev libxss-dev libwayland-dev \
libxkbcommon-dev libdrm-dev libgbm-dev libgl1-mesa-dev libgles2-mesa-dev \
libegl1-mesa-dev libdbus-1-dev libibus-1.0-dev libudev-dev fcitx-libs-dev
@ -32,7 +32,7 @@ Fedora 35, all available features enabled:
systemd-devel mesa-libGL-devel libxkbcommon-devel mesa-libGLES-devel \
mesa-libEGL-devel vulkan-devel wayland-devel wayland-protocols-devel \
libdrm-devel mesa-libgbm-devel libusb-devel libdecor-devel \
libsamplerate-devel
libsamplerate-devel pipewire-jack-audio-connection-kit-devel \
NOTES:
- This includes all the audio targets except arts and esd, because Ubuntu

2
include/SDL_config.h.cmake
View File

@ -299,6 +299,8 @@
#cmakedefine SDL_AUDIO_DRIVER_DUMMY @SDL_AUDIO_DRIVER_DUMMY@
#cmakedefine SDL_AUDIO_DRIVER_EMSCRIPTEN @SDL_AUDIO_DRIVER_EMSCRIPTEN@
#cmakedefine SDL_AUDIO_DRIVER_HAIKU @SDL_AUDIO_DRIVER_HAIKU@
#cmakedefine SDL_AUDIO_DRIVER_JACK @SDL_AUDIO_DRIVER_JACK@
#cmakedefine SDL_AUDIO_DRIVER_JACK_DYNAMIC @SDL_AUDIO_DRIVER_JACK_DYNAMIC@
#cmakedefine SDL_AUDIO_DRIVER_NETBSD @SDL_AUDIO_DRIVER_NETBSD@
#cmakedefine SDL_AUDIO_DRIVER_OSS @SDL_AUDIO_DRIVER_OSS@
#cmakedefine SDL_AUDIO_DRIVER_PIPEWIRE @SDL_AUDIO_DRIVER_PIPEWIRE@

2
include/SDL_config.h.in
View File

@ -285,6 +285,8 @@
#undef SDL_AUDIO_DRIVER_DUMMY
#undef SDL_AUDIO_DRIVER_EMSCRIPTEN
#undef SDL_AUDIO_DRIVER_HAIKU
#undef SDL_AUDIO_DRIVER_JACK
#undef SDL_AUDIO_DRIVER_JACK_DYNAMIC
#undef SDL_AUDIO_DRIVER_NETBSD
#undef SDL_AUDIO_DRIVER_OPENSLES
#undef SDL_AUDIO_DRIVER_OSS

3
src/audio/SDL_audio.c
View File

@ -84,6 +84,9 @@ static const AudioBootStrap *const bootstrap[] = {
#if SDL_AUDIO_DRIVER_EMSCRIPTEN
&EMSCRIPTENAUDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_JACK
&JACK_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_PIPEWIRE
&PIPEWIRE_bootstrap,
#endif

1
src/audio/SDL_sysaudio.h
View File

@ -184,6 +184,7 @@ typedef struct AudioBootStrap
extern AudioBootStrap PIPEWIRE_bootstrap;
extern AudioBootStrap PULSEAUDIO_bootstrap;
extern AudioBootStrap ALSA_bootstrap;
extern AudioBootStrap JACK_bootstrap;
extern AudioBootStrap SNDIO_bootstrap;
extern AudioBootStrap NETBSDAUDIO_bootstrap;
extern AudioBootStrap DSP_bootstrap;

446
src/audio/jack/SDL_jackaudio.c Normal file
View File

@ -0,0 +1,446 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2022 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"
#if SDL_AUDIO_DRIVER_JACK
#include "SDL_timer.h"
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_jackaudio.h"
#include "SDL_loadso.h"
#include "../../thread/SDL_systhread.h"
static jack_client_t * (*JACK_jack_client_open) (const char *, jack_options_t, jack_status_t *, ...);
static int (*JACK_jack_client_close) (jack_client_t *);
static void (*JACK_jack_on_shutdown) (jack_client_t *, JackShutdownCallback, void *);
static int (*JACK_jack_activate) (jack_client_t *);
static int (*JACK_jack_deactivate) (jack_client_t *);
static void * (*JACK_jack_port_get_buffer) (jack_port_t *, jack_nframes_t);
static int (*JACK_jack_port_unregister) (jack_client_t *, jack_port_t *);
static void (*JACK_jack_free) (void *);
static const char ** (*JACK_jack_get_ports) (jack_client_t *, const char *, const char *, unsigned long);
static jack_nframes_t (*JACK_jack_get_sample_rate) (jack_client_t *);
static jack_nframes_t (*JACK_jack_get_buffer_size) (jack_client_t *);
static jack_port_t * (*JACK_jack_port_register) (jack_client_t *, const char *, const char *, unsigned long, unsigned long);
static jack_port_t * (*JACK_jack_port_by_name) (jack_client_t *, const char *);
static const char * (*JACK_jack_port_name) (const jack_port_t *);
static const char * (*JACK_jack_port_type) (const jack_port_t *);
static int (*JACK_jack_connect) (jack_client_t *, const char *, const char *);
static int (*JACK_jack_set_process_callback) (jack_client_t *, JackProcessCallback, void *);
static int load_jack_syms(void);
#ifdef SDL_AUDIO_DRIVER_JACK_DYNAMIC
static const char *jack_library = SDL_AUDIO_DRIVER_JACK_DYNAMIC;
static void *jack_handle = NULL;
/* !!! FIXME: this is copy/pasted in several places now */
static int
load_jack_sym(const char *fn, void **addr)
{
*addr = SDL_LoadFunction(jack_handle, fn);
if (*addr == NULL) {
/* Don't call SDL_SetError(): SDL_LoadFunction already did. */
return 0;
}
return 1;
}
/* cast funcs to char* first, to please GCC's strict aliasing rules. */
#define SDL_JACK_SYM(x) \
if (!load_jack_sym(#x, (void **) (char *) &JACK_##x)) return -1
static void
UnloadJackLibrary(void)
{
if (jack_handle != NULL) {
SDL_UnloadObject(jack_handle);
jack_handle = NULL;
}
}
static int
LoadJackLibrary(void)
{
int retval = 0;
if (jack_handle == NULL) {
jack_handle = SDL_LoadObject(jack_library);
if (jack_handle == NULL) {
retval = -1;
/* Don't call SDL_SetError(): SDL_LoadObject already did. */
} else {
retval = load_jack_syms();
if (retval < 0) {
UnloadJackLibrary();
}
}
}
return retval;
}
#else
#define SDL_JACK_SYM(x) JACK_##x = x
static void
UnloadJackLibrary(void)
{
}
static int
LoadJackLibrary(void)
{
load_jack_syms();
return 0;
}
#endif /* SDL_AUDIO_DRIVER_JACK_DYNAMIC */
static int
load_jack_syms(void)
{
SDL_JACK_SYM(jack_client_open);
SDL_JACK_SYM(jack_client_close);
SDL_JACK_SYM(jack_on_shutdown);
SDL_JACK_SYM(jack_activate);
SDL_JACK_SYM(jack_deactivate);
SDL_JACK_SYM(jack_port_get_buffer);
SDL_JACK_SYM(jack_port_unregister);
SDL_JACK_SYM(jack_free);
SDL_JACK_SYM(jack_get_ports);
SDL_JACK_SYM(jack_get_sample_rate);
SDL_JACK_SYM(jack_get_buffer_size);
SDL_JACK_SYM(jack_port_register);
SDL_JACK_SYM(jack_port_by_name);
SDL_JACK_SYM(jack_port_name);
SDL_JACK_SYM(jack_port_type);
SDL_JACK_SYM(jack_connect);
SDL_JACK_SYM(jack_set_process_callback);
return 0;
}
static void
jackShutdownCallback(void *arg) /* JACK went away; device is lost. */
{
SDL_AudioDevice *this = (SDL_AudioDevice *) arg;
SDL_OpenedAudioDeviceDisconnected(this);
SDL_SemPost(this->hidden->iosem); /* unblock the SDL thread. */
}
// !!! FIXME: implement and register these!
//typedef int(* JackSampleRateCallback)(jack_nframes_t nframes, void *arg)
//typedef int(* JackBufferSizeCallback)(jack_nframes_t nframes, void *arg)
static int
jackProcessPlaybackCallback(jack_nframes_t nframes, void *arg)
{
SDL_AudioDevice *this = (SDL_AudioDevice *) arg;
jack_port_t **ports = this->hidden->sdlports;
const int total_channels = this->spec.channels;
const int total_frames = this->spec.samples;
int channelsi;
if (!SDL_AtomicGet(&this->enabled)) {
/* silence the buffer to avoid repeats and corruption. */
SDL_memset(this->hidden->iobuffer, '\0', this->spec.size);
}
for (channelsi = 0; channelsi < total_channels; channelsi++) {
float *dst = (float *) JACK_jack_port_get_buffer(ports[channelsi], nframes);
if (dst) {
const float *src = ((float *) this->hidden->iobuffer) + channelsi;
int framesi;
for (framesi = 0; framesi < total_frames; framesi++) {
*(dst++) = *src;
src += total_channels;
}
}
}
SDL_SemPost(this->hidden->iosem); /* tell SDL thread we're done; refill the buffer. */
return 0; /* success */
}
/* This function waits until it is possible to write a full sound buffer */
static void
JACK_WaitDevice(_THIS)
{
if (SDL_AtomicGet(&this->enabled)) {
if (SDL_SemWait(this->hidden->iosem) == -1) {
SDL_OpenedAudioDeviceDisconnected(this);
}
}
}
static Uint8 *
JACK_GetDeviceBuf(_THIS)
{
return (Uint8 *) this->hidden->iobuffer;
}
static int
jackProcessCaptureCallback(jack_nframes_t nframes, void *arg)
{
SDL_AudioDevice *this = (SDL_AudioDevice *) arg;
if (SDL_AtomicGet(&this->enabled)) {
jack_port_t **ports = this->hidden->sdlports;
const int total_channels = this->spec.channels;
const int total_frames = this->spec.samples;
int channelsi;
for (channelsi = 0; channelsi < total_channels; channelsi++) {
const float *src = (const float *) JACK_jack_port_get_buffer(ports[channelsi], nframes);
if (src) {
float *dst = ((float *) this->hidden->iobuffer) + channelsi;
int framesi;
for (framesi = 0; framesi < total_frames; framesi++) {
*dst = *(src++);
dst += total_channels;
}
}
}
}
SDL_SemPost(this->hidden->iosem); /* tell SDL thread we're done; new buffer is ready! */
return 0; /* success */
}
static int
JACK_CaptureFromDevice(_THIS, void *buffer, int buflen)
{
SDL_assert(buflen == this->spec.size); /* we always fill a full buffer. */
/* Wait for JACK to fill the iobuffer */
if (SDL_SemWait(this->hidden->iosem) == -1) {
return -1;
}
SDL_memcpy(buffer, this->hidden->iobuffer, buflen);
return buflen;
}
static void
JACK_FlushCapture(_THIS)
{
SDL_SemWait(this->hidden->iosem);
}
static void
JACK_CloseDevice(_THIS)
{
if (this->hidden->client) {
JACK_jack_deactivate(this->hidden->client);
if (this->hidden->sdlports) {
const int channels = this->spec.channels;
int i;
for (i = 0; i < channels; i++) {
JACK_jack_port_unregister(this->hidden->client, this->hidden->sdlports[i]);
}
SDL_free(this->hidden->sdlports);
}
JACK_jack_client_close(this->hidden->client);
}
if (this->hidden->iosem) {
SDL_DestroySemaphore(this->hidden->iosem);
}
SDL_free(this->hidden->iobuffer);
SDL_free(this->hidden);
}
static int
JACK_OpenDevice(_THIS, const char *devname)
{
/* Note that JACK uses "output" for capture devices (they output audio
data to us) and "input" for playback (we input audio data to them).
Likewise, SDL's playback port will be "output" (we write data out)
and capture will be "input" (we read data in). */
SDL_bool iscapture = this->iscapture;
const unsigned long sysportflags = iscapture ? JackPortIsOutput : JackPortIsInput;
const unsigned long sdlportflags = iscapture ? JackPortIsInput : JackPortIsOutput;
const JackProcessCallback callback = iscapture ? jackProcessCaptureCallback : jackProcessPlaybackCallback;
const char *sdlportstr = iscapture ? "input" : "output";
const char **devports = NULL;
int *audio_ports;
jack_client_t *client = NULL;
jack_status_t status;
int channels = 0;
int ports = 0;
int i;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *) SDL_calloc(1, sizeof (*this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
/* !!! FIXME: we _still_ need an API to specify an app name */
client = JACK_jack_client_open("SDL", JackNoStartServer, &status, NULL);
this->hidden->client = client;
if (client == NULL) {
return SDL_SetError("Can't open JACK client");
}
devports = JACK_jack_get_ports(client, NULL, NULL, JackPortIsPhysical | sysportflags);
if (!devports || !devports[0]) {
return SDL_SetError("No physical JACK ports available");
}
while (devports[++ports]) {
/* spin to count devports */
}
/* Filter out non-audio ports */
audio_ports = SDL_calloc(ports, sizeof *audio_ports);
for (i = 0; i < ports; i++) {
const jack_port_t *dport = JACK_jack_port_by_name(client, devports[i]);
const char *type = JACK_jack_port_type(dport);
const int len = SDL_strlen(type);
/* See if type ends with "audio" */
if (len >= 5 && !SDL_memcmp(type+len-5, "audio", 5)) {
audio_ports[channels++] = i;
}
}
if (channels == 0) {
return SDL_SetError("No physical JACK ports available");
}
/* !!! FIXME: docs say about buffer size: "This size may change, clients that depend on it must register a bufsize_callback so they will be notified if it does." */
/* Jack pretty much demands what it wants. */
this->spec.format = AUDIO_F32SYS;
this->spec.freq = JACK_jack_get_sample_rate(client);
this->spec.channels = channels;
this->spec.samples = JACK_jack_get_buffer_size(client);
SDL_CalculateAudioSpec(&this->spec);
this->hidden->iosem = SDL_CreateSemaphore(0);
if (!this->hidden->iosem) {
return -1; /* error was set by SDL_CreateSemaphore */
}
this->hidden->iobuffer = (float *) SDL_calloc(1, this->spec.size);
if (!this->hidden->iobuffer) {
return SDL_OutOfMemory();
}
/* Build SDL's ports, which we will connect to the device ports. */
this->hidden->sdlports = (jack_port_t **) SDL_calloc(channels, sizeof (jack_port_t *));
if (this->hidden->sdlports == NULL) {
return SDL_OutOfMemory();
}
for (i = 0; i < channels; i++) {
char portname[32];
SDL_snprintf(portname, sizeof (portname), "sdl_jack_%s_%d", sdlportstr, i);
this->hidden->sdlports[i] = JACK_jack_port_register(client, portname, JACK_DEFAULT_AUDIO_TYPE, sdlportflags, 0);
if (this->hidden->sdlports[i] == NULL) {
return SDL_SetError("jack_port_register failed");
}
}
if (JACK_jack_set_process_callback(client, callback, this) != 0) {
return SDL_SetError("JACK: Couldn't set process callback");
}
JACK_jack_on_shutdown(client, jackShutdownCallback, this);
if (JACK_jack_activate(client) != 0) {
return SDL_SetError("Failed to activate JACK client");
}
/* once activated, we can connect all the ports. */
for (i = 0; i < channels; i++) {
const char *sdlport = JACK_jack_port_name(this->hidden->sdlports[i]);
const char *srcport = iscapture ? devports[audio_ports[i]] : sdlport;
const char *dstport = iscapture ? sdlport : devports[audio_ports[i]];
if (JACK_jack_connect(client, srcport, dstport) != 0) {
return SDL_SetError("Couldn't connect JACK ports: %s => %s", srcport, dstport);
}
}
/* don't need these anymore. */
JACK_jack_free(devports);
SDL_free(audio_ports);
/* We're ready to rock and roll. :-) */
return 0;
}
static void
JACK_Deinitialize(void)
{
UnloadJackLibrary();
}
static SDL_bool
JACK_Init(SDL_AudioDriverImpl * impl)
{
if (LoadJackLibrary() < 0) {
return SDL_FALSE;
} else {
/* Make sure a JACK server is running and available. */
jack_status_t status;
jack_client_t *client = JACK_jack_client_open("SDL", JackNoStartServer, &status, NULL);
if (client == NULL) {
UnloadJackLibrary();
return SDL_FALSE;
}
JACK_jack_client_close(client);
}
/* Set the function pointers */
impl->OpenDevice = JACK_OpenDevice;
impl->WaitDevice = JACK_WaitDevice;
impl->GetDeviceBuf = JACK_GetDeviceBuf;
impl->CloseDevice = JACK_CloseDevice;
impl->Deinitialize = JACK_Deinitialize;
impl->CaptureFromDevice = JACK_CaptureFromDevice;
impl->FlushCapture = JACK_FlushCapture;
impl->OnlyHasDefaultOutputDevice = SDL_TRUE;
impl->OnlyHasDefaultCaptureDevice = SDL_TRUE;
impl->HasCaptureSupport = SDL_TRUE;
return SDL_TRUE; /* this audio target is available. */
}
AudioBootStrap JACK_bootstrap = {
"jack", "JACK Audio Connection Kit", JACK_Init, SDL_FALSE
};
#endif /* SDL_AUDIO_DRIVER_JACK */
/* vi: set ts=4 sw=4 expandtab: */

41
src/audio/jack/SDL_jackaudio.h Normal file
View File

@ -0,0 +1,41 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2022 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.
*/
#ifndef SDL_jackaudio_h_
#define SDL_jackaudio_h_
#include <jack/jack.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
jack_client_t *client;
SDL_sem *iosem;
float *iobuffer;
jack_port_t **sdlports;
};
#endif /* SDL_jackaudio_h_ */
/* vi: set ts=4 sw=4 expandtab: */