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reverted sndio backend removal.

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This commit is contained in:
Ozkan Sezer 2022-11-22 22:04:10 +03:00
parent 3b318f981e
commit 7df102d220
10 changed files with 647 additions and 0 deletions
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3
CMakeLists.txt
View file

@ -462,6 +462,8 @@ 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})
dep_option(SDL_PULSEAUDIO_SHARED "Dynamically load PulseAudio support" ON "SDL_PULSEAUDIO" OFF)
set_option(SDL_SNDIO "Support the sndio audio API" ${UNIX_SYS})
dep_option(SDL_SNDIO_SHARED "Dynamically load the sndio audio API" ON "SDL_SNDIO" OFF)
set_option(SDL_LIBSAMPLERATE "Use libsamplerate for audio rate conversion" ${UNIX_SYS})
dep_option(SDL_LIBSAMPLERATE_SHARED "Dynamically load libsamplerate" ON "SDL_LIBSAMPLERATE" OFF)
set_option(SDL_RPATH "Use an rpath when linking SDL" ${UNIX_SYS})
@ -1399,6 +1401,7 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
CheckALSA()
CheckPipewire()
CheckPulseAudio()
CheckSNDIO()
endif()
if(SDL_VIDEO)

29
cmake/sdlchecks.cmake
View file

@ -165,6 +165,35 @@ macro(CheckPulseAudio)
endif()
endmacro()
# Requires:
# - PkgCheckModules
# Optional:
# - SDL_SNDIO_SHARED opt
# - HAVE_SDL_LOADSO opt
macro(CheckSNDIO)
if(SDL_SNDIO)
pkg_check_modules(PKG_SNDIO sndio)
if(PKG_SNDIO_FOUND)
set(HAVE_SNDIO TRUE)
file(GLOB SNDIO_SOURCES ${SDL3_SOURCE_DIR}/src/audio/sndio/*.c)
list(APPEND SOURCE_FILES ${SNDIO_SOURCES})
set(SDL_AUDIO_DRIVER_SNDIO 1)
list(APPEND EXTRA_CFLAGS ${PKG_SNDIO_CFLAGS})
if(SDL_SNDIO_SHARED AND NOT HAVE_SDL_LOADSO)
message_warn("You must have SDL_LoadObject() support for dynamic sndio loading")
endif()
FindLibraryAndSONAME("sndio" LIBDIRS ${PKG_SNDIO_LIBRARY_DIRS})
if(SDL_SNDIO_SHARED AND SNDIO_LIB AND HAVE_SDL_LOADSO)
set(SDL_AUDIO_DRIVER_SNDIO_DYNAMIC "\"${SNDIO_LIB_SONAME}\"")
set(HAVE_SNDIO_SHARED TRUE)
else()
list(APPEND EXTRA_LIBS ${PKG_SNDIO_LDFLAGS})
endif()
set(HAVE_SDL_AUDIO TRUE)
endif()
endif()
endmacro()
# Requires:
# - SDL_LIBSAMPLERATE
# Optional:

133
configure vendored
View file

@ -704,6 +704,8 @@ RPI_LIBS
RPI_CFLAGS
DECOR_LIBS
DECOR_CFLAGS
SNDIO_LIBS
SNDIO_CFLAGS
PULSEAUDIO_LIBS
PULSEAUDIO_CFLAGS
PIPEWIRE_LIBS
@ -870,6 +872,8 @@ enable_pipewire
enable_pipewire_shared
enable_pulseaudio
enable_pulseaudio_shared
enable_sndio
enable_sndio_shared
enable_diskaudio
enable_dummyaudio
enable_libsamplerate
@ -948,6 +952,8 @@ PIPEWIRE_CFLAGS
PIPEWIRE_LIBS
PULSEAUDIO_CFLAGS
PULSEAUDIO_LIBS
SNDIO_CFLAGS
SNDIO_LIBS
DECOR_CFLAGS
DECOR_LIBS
RPI_CFLAGS
@ -1642,6 +1648,8 @@ Optional Features:
--enable-pulseaudio use PulseAudio [default=yes]
--enable-pulseaudio-shared
dynamically load PulseAudio support [default=yes]
--enable-sndio support the sndio audio API [default=yes]
--enable-sndio-shared dynamically load sndio audio support [default=yes]
--enable-diskaudio support the disk writer audio driver [default=yes]
--enable-dummyaudio support the dummy audio driver [default=yes]
--enable-libsamplerate use libsamplerate for audio rate conversion
@ -1767,6 +1775,9 @@ Some influential environment variables:
C compiler flags for PULSEAUDIO, overriding pkg-config
PULSEAUDIO_LIBS
linker flags for PULSEAUDIO, overriding pkg-config
SNDIO_CFLAGS
C compiler flags for SNDIO, overriding pkg-config
SNDIO_LIBS linker flags for SNDIO, overriding pkg-config
DECOR_CFLAGS
C compiler flags for DECOR, overriding pkg-config
DECOR_LIBS linker flags for DECOR, overriding pkg-config
@ -21489,6 +21500,127 @@ printf "%s\n" "#define SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC \"$pulseaudio_lib\""
fi
}
CheckSNDIO()
{
# Check whether --enable-sndio was given.
if test ${enable_sndio+y}
then :
enableval=$enable_sndio;
else $as_nop
enable_sndio=yes
fi
if test x$enable_audio = xyes -a x$enable_sndio = xyes; then
pkg_failed=no
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sndio" >&5
printf %s "checking for sndio... " >&6; }
if test -n "$SNDIO_CFLAGS"; then
pkg_cv_SNDIO_CFLAGS="$SNDIO_CFLAGS"
elif test -n "$PKG_CONFIG"; then
if test -n "$PKG_CONFIG" && \
{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"sndio\""; } >&5
($PKG_CONFIG --exists --print-errors "sndio") 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; then
pkg_cv_SNDIO_CFLAGS=`$PKG_CONFIG --cflags "sndio" 2>/dev/null`
test "x$?" != "x0" && pkg_failed=yes
else
pkg_failed=yes
fi
else
pkg_failed=untried
fi
if test -n "$SNDIO_LIBS"; then
pkg_cv_SNDIO_LIBS="$SNDIO_LIBS"
elif test -n "$PKG_CONFIG"; then
if test -n "$PKG_CONFIG" && \
{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"sndio\""; } >&5
($PKG_CONFIG --exists --print-errors "sndio") 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; then
pkg_cv_SNDIO_LIBS=`$PKG_CONFIG --libs "sndio" 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 $_pkg_short_errors_supported = yes; then
SNDIO_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "sndio" 2>&1`
else
SNDIO_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "sndio" 2>&1`
fi
# Put the nasty error message in config.log where it belongs
echo "$SNDIO_PKG_ERRORS" >&5
audio_sndio=no
elif test $pkg_failed = untried; then
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
printf "%s\n" "no" >&6; }
audio_sndio=no
else
SNDIO_CFLAGS=$pkg_cv_SNDIO_CFLAGS
SNDIO_LIBS=$pkg_cv_SNDIO_LIBS
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
printf "%s\n" "yes" >&6; }
audio_sndio=yes
fi
if test x$audio_sndio = xyes; then
# Check whether --enable-sndio-shared was given.
if test ${enable_sndio_shared+y}
then :
enableval=$enable_sndio_shared;
else $as_nop
enable_sndio_shared=yes
fi
sndio_lib=`find_lib "libsndio.so.*" "$SNDIO_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`
if test x$have_loadso != xyes && \
test x$enable_sndio_shared = xyes; then
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: You must have SDL_LoadObject() support for dynamic sndio loading" >&5
printf "%s\n" "$as_me: WARNING: You must have SDL_LoadObject() support for dynamic sndio loading" >&2;}
fi
if test x$have_loadso = xyes && \
test x$enable_sndio_shared = xyes && test x$sndio_lib != x; then
echo "-- dynamic libsndio -> $sndio_lib"
printf "%s\n" "#define SDL_AUDIO_DRIVER_SNDIO_DYNAMIC \"$sndio_lib\"" >>confdefs.h
SUMMARY_audio="${SUMMARY_audio} sndio(dynamic)"
else
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $SNDIO_LIBS"
SUMMARY_audio="${SUMMARY_audio} sndio"
fi
printf "%s\n" "#define SDL_AUDIO_DRIVER_SNDIO 1" >>confdefs.h
SOURCES="$SOURCES $srcdir/src/audio/sndio/*.c"
EXTRA_CFLAGS="$EXTRA_CFLAGS $SNDIO_CFLAGS"
have_audio=yes
fi
fi
}
CheckDiskAudio()
{
# Check whether --enable-diskaudio was given.
@ -27013,6 +27145,7 @@ printf "%s\n" "#define SDL_VIDEO_DRIVER_ANDROID 1" >>confdefs.h
CheckALSA
CheckPipewire
CheckPulseAudio
CheckSNDIO
CheckLibSampleRate
# Need to check for Raspberry PI first and add platform specific compiler flags, otherwise the test for GLES fails!
CheckRPI

38
configure.ac
View file

@ -1068,6 +1068,43 @@ CheckPulseAudio()
fi
}
dnl See if the sndio audio interface is supported
CheckSNDIO()
{
AC_ARG_ENABLE(sndio,
[AS_HELP_STRING([--enable-sndio], [support the sndio audio API [default=yes]])],
, enable_sndio=yes)
if test x$enable_audio = xyes -a x$enable_sndio = xyes; then
PKG_CHECK_MODULES([SNDIO], [sndio], audio_sndio=yes, audio_sndio=no)
if test x$audio_sndio = xyes; then
AC_ARG_ENABLE(sndio-shared,
[AS_HELP_STRING([--enable-sndio-shared], [dynamically load sndio audio support [default=yes]])],
, enable_sndio_shared=yes)
sndio_lib=[`find_lib "libsndio.so.*" "$SNDIO_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
if test x$have_loadso != xyes && \
test x$enable_sndio_shared = xyes; then
AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic sndio loading])
fi
if test x$have_loadso = xyes && \
test x$enable_sndio_shared = xyes && test x$sndio_lib != x; then
echo "-- dynamic libsndio -> $sndio_lib"
AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_SNDIO_DYNAMIC, "$sndio_lib", [ ])
SUMMARY_audio="${SUMMARY_audio} sndio(dynamic)"
else
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $SNDIO_LIBS"
SUMMARY_audio="${SUMMARY_audio} sndio"
fi
AC_DEFINE(SDL_AUDIO_DRIVER_SNDIO, 1, [ ])
SOURCES="$SOURCES $srcdir/src/audio/sndio/*.c"
EXTRA_CFLAGS="$EXTRA_CFLAGS $SNDIO_CFLAGS"
have_audio=yes
fi
fi
}
dnl rcg07142001 See if the user wants the disk writer audio driver...
CheckDiskAudio()
{
@ -3382,6 +3419,7 @@ case "$host" in
CheckALSA
CheckPipewire
CheckPulseAudio
CheckSNDIO
CheckLibSampleRate
# Need to check for Raspberry PI first and add platform specific compiler flags, otherwise the test for GLES fails!
CheckRPI

2
include/SDL_config.h.cmake
View file

@ -305,6 +305,8 @@
#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_DYNAMIC @SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC@
#cmakedefine SDL_AUDIO_DRIVER_SNDIO @SDL_AUDIO_DRIVER_SNDIO@
#cmakedefine SDL_AUDIO_DRIVER_SNDIO_DYNAMIC @SDL_AUDIO_DRIVER_SNDIO_DYNAMIC@
#cmakedefine SDL_AUDIO_DRIVER_WASAPI @SDL_AUDIO_DRIVER_WASAPI@
#cmakedefine SDL_AUDIO_DRIVER_VITA @SDL_AUDIO_DRIVER_VITA@
#cmakedefine SDL_AUDIO_DRIVER_PSP @SDL_AUDIO_DRIVER_PSP@

2
include/SDL_config.h.in
View file

@ -292,6 +292,8 @@
#undef SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC
#undef SDL_AUDIO_DRIVER_PULSEAUDIO
#undef SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC
#undef SDL_AUDIO_DRIVER_SNDIO
#undef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC
#undef SDL_AUDIO_DRIVER_WASAPI
/* Enable various input drivers */

3
src/audio/SDL_audio.c
View file

@ -42,6 +42,9 @@ static const AudioBootStrap *const bootstrap[] = {
#if SDL_AUDIO_DRIVER_ALSA
&ALSA_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_SNDIO
&SNDIO_bootstrap,
#endif
#if SDL_AUDIO_DRIVER_NETBSD
&NETBSDAUDIO_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 SNDIO_bootstrap;
extern AudioBootStrap NETBSDAUDIO_bootstrap;
extern AudioBootStrap DSP_bootstrap;
extern AudioBootStrap WASAPI_bootstrap;

387
src/audio/sndio/SDL_sndioaudio.c Normal file
View file

@ -0,0 +1,387 @@
/*
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_SNDIO
/* OpenBSD sndio target */
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <poll.h>
#include <unistd.h>
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_sndioaudio.h"
#ifdef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC
#include "SDL_loadso.h"
#endif
#ifndef INFTIM
#define INFTIM -1
#endif
#ifndef SIO_DEVANY
#define SIO_DEVANY "default"
#endif
static struct sio_hdl * (*SNDIO_sio_open)(const char *, unsigned int, int);
static void (*SNDIO_sio_close)(struct sio_hdl *);
static int (*SNDIO_sio_setpar)(struct sio_hdl *, struct sio_par *);
static int (*SNDIO_sio_getpar)(struct sio_hdl *, struct sio_par *);
static int (*SNDIO_sio_start)(struct sio_hdl *);
static int (*SNDIO_sio_stop)(struct sio_hdl *);
static size_t (*SNDIO_sio_read)(struct sio_hdl *, void *, size_t);
static size_t (*SNDIO_sio_write)(struct sio_hdl *, const void *, size_t);
static int (*SNDIO_sio_nfds)(struct sio_hdl *);
static int (*SNDIO_sio_pollfd)(struct sio_hdl *, struct pollfd *, int);
static int (*SNDIO_sio_revents)(struct sio_hdl *, struct pollfd *);
static int (*SNDIO_sio_eof)(struct sio_hdl *);
static void (*SNDIO_sio_initpar)(struct sio_par *);
#ifdef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC
static const char *sndio_library = SDL_AUDIO_DRIVER_SNDIO_DYNAMIC;
static void *sndio_handle = NULL;
static int
load_sndio_sym(const char *fn, void **addr)
{
*addr = SDL_LoadFunction(sndio_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_SNDIO_SYM(x) \
if (!load_sndio_sym(#x, (void **) (char *) &SNDIO_##x)) return -1
#else
#define SDL_SNDIO_SYM(x) SNDIO_##x = x
#endif
static int
load_sndio_syms(void)
{
SDL_SNDIO_SYM(sio_open);
SDL_SNDIO_SYM(sio_close);
SDL_SNDIO_SYM(sio_setpar);
SDL_SNDIO_SYM(sio_getpar);
SDL_SNDIO_SYM(sio_start);
SDL_SNDIO_SYM(sio_stop);
SDL_SNDIO_SYM(sio_read);
SDL_SNDIO_SYM(sio_write);
SDL_SNDIO_SYM(sio_nfds);
SDL_SNDIO_SYM(sio_pollfd);
SDL_SNDIO_SYM(sio_revents);
SDL_SNDIO_SYM(sio_eof);
SDL_SNDIO_SYM(sio_initpar);
return 0;
}
#undef SDL_SNDIO_SYM
#ifdef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC
static void
UnloadSNDIOLibrary(void)
{
if (sndio_handle != NULL) {
SDL_UnloadObject(sndio_handle);
sndio_handle = NULL;
}
}
static int
LoadSNDIOLibrary(void)
{
int retval = 0;
if (sndio_handle == NULL) {
sndio_handle = SDL_LoadObject(sndio_library);
if (sndio_handle == NULL) {
retval = -1;
/* Don't call SDL_SetError(): SDL_LoadObject already did. */
} else {
retval = load_sndio_syms();
if (retval < 0) {
UnloadSNDIOLibrary();
}
}
}
return retval;
}
#else
static void
UnloadSNDIOLibrary(void)
{
}
static int
LoadSNDIOLibrary(void)
{
load_sndio_syms();
return 0;
}
#endif /* SDL_AUDIO_DRIVER_SNDIO_DYNAMIC */
static void
SNDIO_WaitDevice(_THIS)
{
/* no-op; SNDIO_sio_write() blocks if necessary. */
}
static void
SNDIO_PlayDevice(_THIS)
{
const int written = SNDIO_sio_write(this->hidden->dev,
this->hidden->mixbuf,
this->hidden->mixlen);
/* If we couldn't write, assume fatal error for now */
if ( written == 0 ) {
SDL_OpenedAudioDeviceDisconnected(this);
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", written);
#endif
}
static int
SNDIO_CaptureFromDevice(_THIS, void *buffer, int buflen)
{
size_t r;
int revents;
int nfds;
/* Emulate a blocking read */
r = SNDIO_sio_read(this->hidden->dev, buffer, buflen);
while (r == 0 && !SNDIO_sio_eof(this->hidden->dev)) {
if ((nfds = SNDIO_sio_pollfd(this->hidden->dev, this->hidden->pfd, POLLIN)) <= 0
|| poll(this->hidden->pfd, nfds, INFTIM) < 0) {
return -1;
}
revents = SNDIO_sio_revents(this->hidden->dev, this->hidden->pfd);
if (revents & POLLIN) {
r = SNDIO_sio_read(this->hidden->dev, buffer, buflen);
}
if (revents & POLLHUP) {
break;
}
}
return (int) r;
}
static void
SNDIO_FlushCapture(_THIS)
{
char buf[512];
while (SNDIO_sio_read(this->hidden->dev, buf, sizeof(buf)) != 0) {
/* do nothing */;
}
}
static Uint8 *
SNDIO_GetDeviceBuf(_THIS)
{
return this->hidden->mixbuf;
}
static void
SNDIO_CloseDevice(_THIS)
{
if ( this->hidden->pfd != NULL ) {
SDL_free(this->hidden->pfd);
}
if ( this->hidden->dev != NULL ) {
SNDIO_sio_stop(this->hidden->dev);
SNDIO_sio_close(this->hidden->dev);
}
SDL_free(this->hidden->mixbuf);
SDL_free(this->hidden);
}
static int
SNDIO_OpenDevice(_THIS, const char *devname)
{
SDL_AudioFormat test_format;
struct sio_par par;
SDL_bool iscapture = this->iscapture;
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc(sizeof(*this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_zerop(this->hidden);
this->hidden->mixlen = this->spec.size;
/* Capture devices must be non-blocking for SNDIO_FlushCapture */
if ((this->hidden->dev =
SNDIO_sio_open(devname != NULL ? devname : SIO_DEVANY,
iscapture ? SIO_REC : SIO_PLAY, iscapture)) == NULL) {
return SDL_SetError("sio_open() failed");
}
/* Allocate the pollfd array for capture devices */
if (iscapture && (this->hidden->pfd =
SDL_malloc(sizeof(struct pollfd) * SNDIO_sio_nfds(this->hidden->dev))) == NULL) {
return SDL_OutOfMemory();
}
SNDIO_sio_initpar(&par);
par.rate = this->spec.freq;
par.pchan = this->spec.channels;
par.round = this->spec.samples;
par.appbufsz = par.round * 2;
/* Try for a closest match on audio format */
for (test_format = SDL_FirstAudioFormat(this->spec.format); test_format; test_format = SDL_NextAudioFormat()) {
if (!SDL_AUDIO_ISFLOAT(test_format)) {
par.le = SDL_AUDIO_ISLITTLEENDIAN(test_format) ? 1 : 0;
par.sig = SDL_AUDIO_ISSIGNED(test_format) ? 1 : 0;
par.bits = SDL_AUDIO_BITSIZE(test_format);
if (SNDIO_sio_setpar(this->hidden->dev, &par) == 0) {
continue;
}
if (SNDIO_sio_getpar(this->hidden->dev, &par) == 0) {
return SDL_SetError("sio_getpar() failed");
}
if (par.bps != SIO_BPS(par.bits)) {
continue;
}
if ((par.bits == 8 * par.bps) || (par.msb)) {
break;
}
}
}
if (!test_format) {
return SDL_SetError("%s: Unsupported audio format", "sndio");
}
if ((par.bps == 4) && (par.sig) && (par.le))
this->spec.format = AUDIO_S32LSB;
else if ((par.bps == 4) && (par.sig) && (!par.le))
this->spec.format = AUDIO_S32MSB;
else if ((par.bps == 2) && (par.sig) && (par.le))
this->spec.format = AUDIO_S16LSB;
else if ((par.bps == 2) && (par.sig) && (!par.le))
this->spec.format = AUDIO_S16MSB;
else if ((par.bps == 2) && (!par.sig) && (par.le))
this->spec.format = AUDIO_U16LSB;
else if ((par.bps == 2) && (!par.sig) && (!par.le))
this->spec.format = AUDIO_U16MSB;
else if ((par.bps == 1) && (par.sig))
this->spec.format = AUDIO_S8;
else if ((par.bps == 1) && (!par.sig))
this->spec.format = AUDIO_U8;
else {
return SDL_SetError("sndio: Got unsupported hardware audio format.");
}
this->spec.freq = par.rate;
this->spec.channels = par.pchan;
this->spec.samples = par.round;
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_malloc(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->hidden->mixlen);
if (!SNDIO_sio_start(this->hidden->dev)) {
return SDL_SetError("sio_start() failed");
}
/* We're ready to rock and roll. :-) */
return 0;
}
static void
SNDIO_Deinitialize(void)
{
UnloadSNDIOLibrary();
}
static void
SNDIO_DetectDevices(void)
{
SDL_AddAudioDevice(SDL_FALSE, DEFAULT_OUTPUT_DEVNAME, NULL, (void *) 0x1);
SDL_AddAudioDevice(SDL_TRUE, DEFAULT_INPUT_DEVNAME, NULL, (void *) 0x2);
}
static SDL_bool
SNDIO_Init(SDL_AudioDriverImpl * impl)
{
if (LoadSNDIOLibrary() < 0) {
return SDL_FALSE;
}
/* Set the function pointers */
impl->OpenDevice = SNDIO_OpenDevice;
impl->WaitDevice = SNDIO_WaitDevice;
impl->PlayDevice = SNDIO_PlayDevice;
impl->GetDeviceBuf = SNDIO_GetDeviceBuf;
impl->CloseDevice = SNDIO_CloseDevice;
impl->CaptureFromDevice = SNDIO_CaptureFromDevice;
impl->FlushCapture = SNDIO_FlushCapture;
impl->Deinitialize = SNDIO_Deinitialize;
impl->DetectDevices = SNDIO_DetectDevices;
impl->AllowsArbitraryDeviceNames = SDL_TRUE;
impl->HasCaptureSupport = SDL_TRUE;
return SDL_TRUE; /* this audio target is available. */
}
AudioBootStrap SNDIO_bootstrap = {
"sndio", "OpenBSD sndio", SNDIO_Init, SDL_FALSE
};
#endif /* SDL_AUDIO_DRIVER_SNDIO */
/* vi: set ts=4 sw=4 expandtab: */

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src/audio/sndio/SDL_sndioaudio.h Normal file
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/*
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"
#ifndef SDL_sndioaudio_h_
#define SDL_sndioaudio_h_
#include <poll.h>
#include <sndio.h>
#include "../SDL_sysaudio.h"
/* Hidden "this" pointer for the audio functions */
#define _THIS SDL_AudioDevice *this
struct SDL_PrivateAudioData
{
/* The audio device handle */
struct sio_hdl *dev;
/* Raw mixing buffer */
Uint8 *mixbuf;
int mixlen;
/* Polling structures for non-blocking sndio devices */
struct pollfd *pfd;
};
#endif /* SDL_sndioaudio_h_ */
/* vi: set ts=4 sw=4 expandtab: */