Added configure and cmake support for libsamplerate

CMakeLists.txt

@@ -267,8 +267,6 @@ set_option(DISKAUDIO           "Support the disk writer audio driver" ON)
 set_option(DUMMYAUDIO          "Support the dummy audio driver" ON)
 set_option(VIDEO_DIRECTFB      "Use DirectFB video driver" OFF)
 dep_option(DIRECTFB_SHARED     "Dynamically load directfb support" ON "VIDEO_DIRECTFB" OFF)
-set_option(FUSIONSOUND         "Use FusionSound audio driver" OFF)
-dep_option(FUSIONSOUND_SHARED  "Dynamically load fusionsound audio support" ON "FUSIONSOUND" OFF)
 set_option(VIDEO_DUMMY         "Use dummy video driver" ON)
 set_option(VIDEO_OPENGL        "Include OpenGL support" ON)
 set_option(VIDEO_OPENGLES      "Include OpenGL ES support" ON)
@@ -287,6 +285,10 @@ dep_option(ARTS_SHARED         "Dynamically load aRts audio support" ON "ARTS" O
 set_option(NAS                 "Support the NAS audio API" ${UNIX_SYS})
 set_option(NAS_SHARED          "Dynamically load NAS audio API" ${UNIX_SYS})
 set_option(SNDIO               "Support the sndio audio API" ${UNIX_SYS})
+set_option(FUSIONSOUND         "Use FusionSound audio driver" OFF)
+dep_option(FUSIONSOUND_SHARED  "Dynamically load fusionsound audio support" ON "FUSIONSOUND" OFF)
+set_option(LIBSAMPLERATE       "Use libsamplerate for audio rate conversion" ${UNIX_SYS})
+dep_option(LIBSAMPLERATE_SHARED "Dynamically load libsamplerate" ON "LIBSAMPLERATE" OFF)
 set_option(RPATH               "Use an rpath when linking SDL" ${UNIX_SYS})
 set_option(CLOCK_GETTIME       "Use clock_gettime() instead of gettimeofday()" OFF)
 set_option(INPUT_TSLIB         "Use the Touchscreen library for input" ${UNIX_SYS})
@@ -847,6 +849,7 @@ elseif(UNIX AND NOT APPLE)
     CheckNAS()
     CheckSNDIO()
     CheckFusionSound()
+    CheckLibSampleRate()
   endif()
 
   if(SDL_VIDEO)

cmake/sdlchecks.cmake

@@ -315,6 +315,29 @@ macro(CheckFusionSound)
   endif()
 endmacro()
 
+# Requires:
+# - LIBSAMPLERATE
+# Optional:
+# - LIBSAMPLERATE_SHARED opt
+# - HAVE_DLOPEN opt
+macro(CheckLibSampleRate)
+  if(LIBSAMPLERATE)
+    check_include_file(samplerate.h HAVE_LIBSAMPLERATE_H)
+    if(HAVE_LIBSAMPLERATE_H)
+      if(LIBSAMPLERATE_SHARED)
+        if(NOT HAVE_DLOPEN)
+          message_warn("You must have SDL_LoadObject() support for dynamic libsamplerate loading")
+        else()
+          FindLibraryAndSONAME("samplerate")
+          set(SDL_LIBSAMPLERATE_DYNAMIC "\"${SAMPLERATE_LIB_SONAME}\"")
+        endif()
+      else()
+        list(APPEND EXTRA_LDFLAGS -lsamplerate)
+      endif()
+    endif()
+  endif()
+endmacro()
+
 # Requires:
 # - n/a
 # Optional:

configure

@@ -818,8 +818,12 @@ enable_nas
 enable_nas_shared
 enable_sndio
 enable_sndio_shared
+enable_fusionsound
+enable_fusionsound_shared
 enable_diskaudio
 enable_dummyaudio
+enable_libsamplerate
+enable_libsamplerate_shared
 enable_video_wayland
 enable_video_wayland_qt_touch
 enable_wayland_shared
@@ -840,8 +844,6 @@ enable_video_vivante
 enable_video_cocoa
 enable_video_directfb
 enable_directfb_shared
-enable_fusionsound
-enable_fusionsound_shared
 enable_video_dummy
 enable_video_opengl
 enable_video_opengles
@@ -1544,8 +1546,16 @@ Optional Features:
   --enable-nas-shared     dynamically load NAS audio support [[default=yes]]
   --enable-sndio          support the sndio audio API [[default=yes]]
   --enable-sndio-shared   dynamically load sndio audio support [[default=yes]]
+  --enable-fusionsound    use FusionSound audio driver [[default=no]]
+  --enable-fusionsound-shared
+                          dynamically load fusionsound 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
+                          [[default=yes]]
+  --enable-libsamplerate-shared
+                          dynamically load libsamplerate [[default=yes]]
   --enable-video-wayland  use Wayland video driver [[default=yes]]
   --enable-video-wayland-qt-touch
                           QtWayland server support for Wayland video driver
@@ -1576,10 +1586,6 @@ Optional Features:
   --enable-video-directfb use DirectFB video driver [[default=no]]
   --enable-directfb-shared
                           dynamically load directfb support [[default=yes]]
-  --enable-fusionsound    use FusionSound audio driver [[default=no]]
-  --enable-fusionsound-shared
-                          dynamically load fusionsound audio support
-                          [[default=yes]]
   --enable-video-dummy    use dummy video driver [[default=yes]]
   --enable-video-opengl   include OpenGL support [[default=yes]]
   --enable-video-opengles include OpenGL ES support [[default=yes]]
@@ -18547,6 +18553,116 @@ $as_echo "#define SDL_AUDIO_DRIVER_SNDIO 1" >>confdefs.h
     fi
 }
 
+CheckFusionSound()
+{
+    # Check whether --enable-fusionsound was given.
+if test "${enable_fusionsound+set}" = set; then :
+  enableval=$enable_fusionsound;
+else
+  enable_fusionsound=no
+fi
+
+    if test x$enable_audio = xyes -a x$enable_fusionsound = xyes; then
+        fusionsound=no
+
+        FUSIONSOUND_REQUIRED_VERSION=1.1.1
+
+        # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PKG_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"
+  ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for FusionSound $FUSIONSOUND_REQUIRED_VERSION support" >&5
+$as_echo_n "checking for FusionSound $FUSIONSOUND_REQUIRED_VERSION support... " >&6; }
+        if test x$PKG_CONFIG != xno; then
+            if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $FUSIONSOUND_REQUIRED_VERSION fusionsound; then
+                FUSIONSOUND_CFLAGS=`$PKG_CONFIG --cflags fusionsound`
+                FUSIONSOUND_LIBS=`$PKG_CONFIG --libs fusionsound`
+                fusionsound=yes
+            fi
+        fi
+        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $fusionsound" >&5
+$as_echo "$fusionsound" >&6; }
+
+        if test x$fusionsound = xyes; then
+
+$as_echo "#define SDL_AUDIO_DRIVER_FUSIONSOUND 1" >>confdefs.h
+
+            SOURCES="$SOURCES $srcdir/src/audio/fusionsound/*.c"
+            EXTRA_CFLAGS="$EXTRA_CFLAGS $FUSIONSOUND_CFLAGS"
+
+            # Check whether --enable-fusionsound-shared was given.
+if test "${enable_fusionsound_shared+set}" = set; then :
+  enableval=$enable_fusionsound_shared;
+else
+  enable_fusionsound_shared=yes
+fi
+
+            fusionsound_shared=no
+            { $as_echo "$as_me:${as_lineno-$LINENO}: checking for FusionSound dynamic loading support" >&5
+$as_echo_n "checking for FusionSound dynamic loading support... " >&6; }
+            if test x$have_loadso != xyes && \
+               test x$enable_fusionsound_shared = xyes; then
+                { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: You must have SDL_LoadObject() support for dynamic fusionsound loading" >&5
+$as_echo "$as_me: WARNING: You must have SDL_LoadObject() support for dynamic fusionsound loading" >&2;}
+            fi
+            if test x$have_loadso = xyes && \
+               test x$enable_fusionsound_shared = xyes; then
+
+cat >>confdefs.h <<_ACEOF
+#define SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC "libfusionsound.so"
+_ACEOF
+
+                fusionsound_shared=yes
+                SUMMARY_audio="${SUMMARY_audio} fusionsound(dynamic)"
+            else
+                EXTRA_LDFLAGS="$EXTRA_LDFLAGS $FUSIONSOUND_LIBS"
+                SUMMARY_audio="${SUMMARY_audio} fusionsound"
+            fi
+            { $as_echo "$as_me:${as_lineno-$LINENO}: result: $fusionsound_shared" >&5
+$as_echo "$fusionsound_shared" >&6; }
+
+            have_audio=yes
+        fi
+    fi
+}
+
 CheckDiskAudio()
 {
     # Check whether --enable-diskaudio was given.
@@ -18583,6 +18699,52 @@ $as_echo "#define SDL_AUDIO_DRIVER_DUMMY 1" >>confdefs.h
     fi
 }
 
+CheckLibSampleRate()
+{
+    # Check whether --enable-libsamplerate was given.
+if test "${enable_libsamplerate+set}" = set; then :
+  enableval=$enable_libsamplerate;
+else
+  enable_libsamplerate=yes
+fi
+
+    if test x$enable_libsamplerate = xyes; then
+        ac_fn_c_check_header_mongrel "$LINENO" "samplerate.h" "ac_cv_header_samplerate_h" "$ac_includes_default"
+if test "x$ac_cv_header_samplerate_h" = xyes; then :
+  have_samplerate_h_hdr=yes
+else
+  have_samplerate_h_hdr=no
+fi
+
+
+        if test x$have_samplerate_h_hdr = xyes; then
+
+$as_echo "#define HAVE_LIBSAMPLERATE_H 1" >>confdefs.h
+
+
+            # Check whether --enable-libsamplerate-shared was given.
+if test "${enable_libsamplerate_shared+set}" = set; then :
+  enableval=$enable_libsamplerate_shared;
+else
+  enable_libsamplerate_shared=yes
+fi
+
+
+            if test x$enable_libsamplerate_shared = xyes; then
+                samplerate_lib=`find_lib "libsamplerate.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`
+                if test x$samplerate_lib != x; then
+                    echo "-- dynamic samplerate -> $samplerate_lib"
+
+cat >>confdefs.h <<_ACEOF
+#define SDL_LIBSAMPLERATE_DYNAMIC "$samplerate_lib"
+_ACEOF
+
+                fi
+            fi
+        fi
+    fi
+}
+
 CheckVisibilityHidden()
 {
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GCC -fvisibility=hidden option" >&5
@@ -20959,116 +21121,6 @@ $as_echo "$directfb_shared" >&6; }
     fi
 }
 
-CheckFusionSound()
-{
-    # Check whether --enable-fusionsound was given.
-if test "${enable_fusionsound+set}" = set; then :
-  enableval=$enable_fusionsound;
-else
-  enable_fusionsound=no
-fi
-
-    if test x$enable_audio = xyes -a x$enable_fusionsound = xyes; then
-        fusionsound=no
-
-        FUSIONSOUND_REQUIRED_VERSION=1.1.1
-
-        # Extract the first word of "pkg-config", so it can be a program name with args.
-set dummy pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_PKG_CONFIG+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $PKG_CONFIG in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"
-  ;;
-esac
-fi
-PKG_CONFIG=$ac_cv_path_PKG_CONFIG
-if test -n "$PKG_CONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
-$as_echo "$PKG_CONFIG" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for FusionSound $FUSIONSOUND_REQUIRED_VERSION support" >&5
-$as_echo_n "checking for FusionSound $FUSIONSOUND_REQUIRED_VERSION support... " >&6; }
-        if test x$PKG_CONFIG != xno; then
-            if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $FUSIONSOUND_REQUIRED_VERSION fusionsound; then
-                FUSIONSOUND_CFLAGS=`$PKG_CONFIG --cflags fusionsound`
-                FUSIONSOUND_LIBS=`$PKG_CONFIG --libs fusionsound`
-                fusionsound=yes
-            fi
-        fi
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: $fusionsound" >&5
-$as_echo "$fusionsound" >&6; }
-
-        if test x$fusionsound = xyes; then
-
-$as_echo "#define SDL_AUDIO_DRIVER_FUSIONSOUND 1" >>confdefs.h
-
-            SOURCES="$SOURCES $srcdir/src/audio/fusionsound/*.c"
-            EXTRA_CFLAGS="$EXTRA_CFLAGS $FUSIONSOUND_CFLAGS"
-
-            # Check whether --enable-fusionsound-shared was given.
-if test "${enable_fusionsound_shared+set}" = set; then :
-  enableval=$enable_fusionsound_shared;
-else
-  enable_fusionsound_shared=yes
-fi
-
-            fusionsound_shared=no
-            { $as_echo "$as_me:${as_lineno-$LINENO}: checking for FusionSound dynamic loading support" >&5
-$as_echo_n "checking for FusionSound dynamic loading support... " >&6; }
-            if test x$have_loadso != xyes && \
-               test x$enable_fusionsound_shared = xyes; then
-                { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: You must have SDL_LoadObject() support for dynamic fusionsound loading" >&5
-$as_echo "$as_me: WARNING: You must have SDL_LoadObject() support for dynamic fusionsound loading" >&2;}
-            fi
-            if test x$have_loadso = xyes && \
-               test x$enable_fusionsound_shared = xyes; then
-
-cat >>confdefs.h <<_ACEOF
-#define SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC "libfusionsound.so"
-_ACEOF
-
-                fusionsound_shared=yes
-                SUMMARY_audio="${SUMMARY_audio} fusionsound(dynamic)"
-            else
-                EXTRA_LDFLAGS="$EXTRA_LDFLAGS $FUSIONSOUND_LIBS"
-                SUMMARY_audio="${SUMMARY_audio} fusionsound"
-            fi
-            { $as_echo "$as_me:${as_lineno-$LINENO}: result: $fusionsound_shared" >&5
-$as_echo "$fusionsound_shared" >&6; }
-
-            have_audio=yes
-        fi
-    fi
-}
-
 CheckDummyVideo()
 {
     # Check whether --enable-video-dummy was given.
@@ -23144,9 +23196,10 @@ case "$host" in
         CheckESD
         CheckNAS
         CheckSNDIO
+        CheckFusionSound
+        CheckLibSampleRate
         CheckX11
         CheckDirectFB
-        CheckFusionSound
         CheckOpenGLX11
         CheckOpenGLESX11
         CheckMir

configure.in

@@ -1049,6 +1049,58 @@ AC_HELP_STRING([--enable-sndio-shared], [dynamically load sndio audio support [[
     fi
 }
 
+dnl Find FusionSound
+CheckFusionSound()
+{
+    AC_ARG_ENABLE(fusionsound,
+AC_HELP_STRING([--enable-fusionsound], [use FusionSound audio driver [[default=no]]]),
+                  , enable_fusionsound=no)
+    if test x$enable_audio = xyes -a x$enable_fusionsound = xyes; then
+        fusionsound=no
+
+        FUSIONSOUND_REQUIRED_VERSION=1.1.1
+
+        AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
+        AC_MSG_CHECKING(for FusionSound $FUSIONSOUND_REQUIRED_VERSION support)
+        if test x$PKG_CONFIG != xno; then
+            if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $FUSIONSOUND_REQUIRED_VERSION fusionsound; then
+                FUSIONSOUND_CFLAGS=`$PKG_CONFIG --cflags fusionsound`
+                FUSIONSOUND_LIBS=`$PKG_CONFIG --libs fusionsound`
+                fusionsound=yes
+            fi
+        fi
+        AC_MSG_RESULT($fusionsound)
+
+        if test x$fusionsound = xyes; then
+            AC_DEFINE(SDL_AUDIO_DRIVER_FUSIONSOUND, 1, [ ])
+            SOURCES="$SOURCES $srcdir/src/audio/fusionsound/*.c"
+            EXTRA_CFLAGS="$EXTRA_CFLAGS $FUSIONSOUND_CFLAGS"
+            
+            AC_ARG_ENABLE(fusionsound-shared,
+AC_HELP_STRING([--enable-fusionsound-shared], [dynamically load fusionsound audio support [[default=yes]]]),
+                          , enable_fusionsound_shared=yes)
+            fusionsound_shared=no
+            AC_MSG_CHECKING(for FusionSound dynamic loading support)
+            if test x$have_loadso != xyes && \
+               test x$enable_fusionsound_shared = xyes; then
+                AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic fusionsound loading])
+            fi
+            if test x$have_loadso = xyes && \
+               test x$enable_fusionsound_shared = xyes; then
+                AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC, "libfusionsound.so", [ ])
+                fusionsound_shared=yes
+                SUMMARY_audio="${SUMMARY_audio} fusionsound(dynamic)"
+            else
+                EXTRA_LDFLAGS="$EXTRA_LDFLAGS $FUSIONSOUND_LIBS"
+                SUMMARY_audio="${SUMMARY_audio} fusionsound"
+            fi
+            AC_MSG_RESULT($fusionsound_shared)
+            
+            have_audio=yes
+        fi
+    fi
+}
+
 dnl rcg07142001 See if the user wants the disk writer audio driver...
 CheckDiskAudio()
 {
@@ -1075,6 +1127,34 @@ AC_HELP_STRING([--enable-dummyaudio], [support the dummy audio driver [[default=
     fi
 }
 
+dnl See if libsamplerate is available
+CheckLibSampleRate()
+{
+    AC_ARG_ENABLE(libsamplerate,
+AC_HELP_STRING([--enable-libsamplerate], [use libsamplerate for audio rate conversion [[default=yes]]]),
+                  , enable_libsamplerate=yes)
+    if test x$enable_libsamplerate = xyes; then
+        AC_CHECK_HEADER(samplerate.h,
+                        have_samplerate_h_hdr=yes,
+                        have_samplerate_h_hdr=no)
+        if test x$have_samplerate_h_hdr = xyes; then
+            AC_DEFINE(HAVE_LIBSAMPLERATE_H, 1, [ ])
+
+            AC_ARG_ENABLE(libsamplerate-shared,
+AC_HELP_STRING([--enable-libsamplerate-shared], [dynamically load libsamplerate [[default=yes]]]),
+                          , enable_libsamplerate_shared=yes)
+
+            if test x$enable_libsamplerate_shared = xyes; then
+                samplerate_lib=[`find_lib "libsamplerate.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`]
+                if test x$samplerate_lib != x; then
+                    echo "-- dynamic samplerate -> $samplerate_lib"
+                    AC_DEFINE_UNQUOTED(SDL_LIBSAMPLERATE_DYNAMIC, "$samplerate_lib", [ ])
+                fi
+            fi
+        fi
+    fi
+}
+
 dnl See if GCC's -fvisibility=hidden is supported (gcc4 and later, usually).
 dnl  Details of this flag are here: http://gcc.gnu.org/wiki/Visibility
 CheckVisibilityHidden()
@@ -1904,58 +1984,6 @@ AC_MSG_WARN("directfb $directfb_lib")
     fi
 }
 
-dnl Find FusionSound
-CheckFusionSound()
-{
-    AC_ARG_ENABLE(fusionsound,
-AC_HELP_STRING([--enable-fusionsound], [use FusionSound audio driver [[default=no]]]),
-                  , enable_fusionsound=no)
-    if test x$enable_audio = xyes -a x$enable_fusionsound = xyes; then
-        fusionsound=no
-
-        FUSIONSOUND_REQUIRED_VERSION=1.1.1
-
-        AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
-        AC_MSG_CHECKING(for FusionSound $FUSIONSOUND_REQUIRED_VERSION support)
-        if test x$PKG_CONFIG != xno; then
-            if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $FUSIONSOUND_REQUIRED_VERSION fusionsound; then
-                FUSIONSOUND_CFLAGS=`$PKG_CONFIG --cflags fusionsound`
-                FUSIONSOUND_LIBS=`$PKG_CONFIG --libs fusionsound`
-                fusionsound=yes
-            fi
-        fi
-        AC_MSG_RESULT($fusionsound)
-
-        if test x$fusionsound = xyes; then
-            AC_DEFINE(SDL_AUDIO_DRIVER_FUSIONSOUND, 1, [ ])
-            SOURCES="$SOURCES $srcdir/src/audio/fusionsound/*.c"
-            EXTRA_CFLAGS="$EXTRA_CFLAGS $FUSIONSOUND_CFLAGS"
-            
-            AC_ARG_ENABLE(fusionsound-shared,
-AC_HELP_STRING([--enable-fusionsound-shared], [dynamically load fusionsound audio support [[default=yes]]]),
-                          , enable_fusionsound_shared=yes)
-            fusionsound_shared=no
-            AC_MSG_CHECKING(for FusionSound dynamic loading support)
-            if test x$have_loadso != xyes && \
-               test x$enable_fusionsound_shared = xyes; then
-                AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic fusionsound loading])
-            fi
-            if test x$have_loadso = xyes && \
-               test x$enable_fusionsound_shared = xyes; then
-                AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC, "libfusionsound.so", [ ])
-                fusionsound_shared=yes
-                SUMMARY_audio="${SUMMARY_audio} fusionsound(dynamic)"
-            else
-                EXTRA_LDFLAGS="$EXTRA_LDFLAGS $FUSIONSOUND_LIBS"
-                SUMMARY_audio="${SUMMARY_audio} fusionsound"
-            fi
-            AC_MSG_RESULT($fusionsound_shared)
-            
-            have_audio=yes
-        fi
-    fi
-}
-
 dnl rcg04172001 Set up the Null video driver.
 CheckDummyVideo()
 {
@@ -2968,9 +2996,10 @@ case "$host" in
         CheckESD
         CheckNAS
         CheckSNDIO
+        CheckFusionSound
+        CheckLibSampleRate
         CheckX11
         CheckDirectFB
-        CheckFusionSound
         CheckOpenGLX11
         CheckOpenGLESX11
         CheckMir

include/SDL_config.h.cmake

@@ -83,6 +83,7 @@
 #cmakedefine HAVE_DBUS_DBUS_H 1
 #cmakedefine HAVE_IBUS_IBUS_H 1
 #cmakedefine HAVE_FCITX_FRONTEND_H 1
+#cmakedefine HAVE_LIBSAMPLERATE_H 1
 
 /* C library functions */
 #cmakedefine HAVE_MALLOC 1
@@ -358,6 +359,8 @@
 #cmakedefine SDL_ASSEMBLY_ROUTINES @SDL_ASSEMBLY_ROUTINES@
 #cmakedefine SDL_ALTIVEC_BLITTERS @SDL_ALTIVEC_BLITTERS@
 
+/* Enable dynamic libsamplerate support */
+#cmakedefine SDL_LIBSAMPLERATE_DYNAMIC @SDL_LIBSAMPLERATE_DYNAMIC@
 
 /* Platform specific definitions */
 #if !defined(__WIN32__)

include/SDL_config.h.in

@@ -83,6 +83,7 @@
 #undef HAVE_DBUS_DBUS_H
 #undef HAVE_IBUS_IBUS_H
 #undef HAVE_FCITX_FRONTEND_H
+#undef HAVE_LIBSAMPLERATE_H
 
 /* C library functions */
 #undef HAVE_MALLOC
@@ -363,4 +364,7 @@
 /* Enable dynamic udev support */
 #undef SDL_UDEV_DYNAMIC
 
+/* Enable dynamic libsamplerate support */
+#undef SDL_LIBSAMPLERATE_DYNAMIC
+
 #endif /* SDL_config_h_ */

src/audio/SDL_audiocvt.c

@@ -29,7 +29,7 @@
 #include "SDL_assert.h"
 #include "../SDL_dataqueue.h"
 
-#ifdef HAVE_LIBSAMPLERATE
+#if HAVE_LIBSAMPLERATE_H
 #include "samplerate.h"
 #endif
 
@@ -633,7 +633,7 @@ struct SDL_AudioStream
     SDL_CleanupAudioStreamResamplerFunc cleanup_resampler_func;
 };
 
-#ifdef HAVE_LIBSAMPLERATE
+#ifdef HAVE_LIBSAMPLERATE_H
 
 typedef struct
 {
@@ -651,8 +651,8 @@ typedef struct
 static SDL_bool
 LoadLibSampleRate(SDL_AudioStreamResamplerState_SRC *state)
 {
-#ifdef LIBSAMPLERATE_DYNAMIC
-    state->SRC_lib = SDL_LoadObject(LIBSAMPLERATE_DYNAMIC);
+#ifdef SDL_LIBSAMPLERATE_DYNAMIC
+    state->SRC_lib = SDL_LoadObject(SDL_LIBSAMPLERATE_DYNAMIC);
     if (!state->SRC_lib) {
         return SDL_FALSE;
     }
@@ -676,7 +676,7 @@ SDL_ResampleAudioStream_SRC(SDL_AudioStream *stream, const float *inbuf, const i
     SRC_DATA data;
     int result;
 
-    data.data_in = inbuf;
+    data.data_in = (float *)inbuf; /* Older versions of libsamplerate had a non-const pointer, but didn't write to it */
     data.input_frames = inbuflen / ( sizeof(float) * stream->pre_resample_channels );
     data.input_frames_used = 0;
 
@@ -752,7 +752,7 @@ SetupLibSampleRateResampling(SDL_AudioStream *stream)
     return SDL_TRUE;
 }
 
-#endif /* HAVE_LIBSAMPLERATE */
+#endif /* HAVE_LIBSAMPLERATE_H */
 
 typedef struct
 {
@@ -873,7 +873,7 @@ SDL_AudioStream *SDL_NewAudioStream(const SDL_AudioFormat src_format,
             return NULL;  /* SDL_BuildAudioCVT should have called SDL_SetError. */
         }
 
-#ifdef HAVE_LIBSAMPLERATE
+#ifdef HAVE_LIBSAMPLERATE_H
         SetupLibSampleRateResampling(retval);
 #endif