Compile time support for FluidSynth 1.0

Packagers shall be responsible for fixing FluidSynth thread-safety
issues if they choose to use this old buggy version.

configure.ac

@@ -3162,7 +3162,7 @@ fi
 dnl
 dnl libfluidsynth (MIDI synthetizer) plugin
 dnl
-PKG_ENABLE_MODULES_VLC([FLUIDSYNTH], [], [fluidsynth >= 1.1], [MIDI synthetiser with libfluidsynth], [auto])
+PKG_ENABLE_MODULES_VLC([FLUIDSYNTH], [], [fluidsynth], [MIDI synthetiser with libfluidsynth], [auto])
 
 dnl
 dnl Teletext Modules

modules/codec/fluidsynth.c

@@ -38,6 +38,13 @@
 
 #include <fluidsynth.h>
 
+#if (FLUIDSYNTH_VERSION_MAJOR < 1) \
+ || (FLUIDSYNTH_VERSION_MAJOR == 1 && FLUIDSYNTH_VERSION_MINOR < 1)
+# define fluid_synth_sysex(synth, ptr, len, d, e, f, g) (FLUID_FAILED)
+# define fluid_synth_system_reset(synth) (FLUID_FAILED)
+# define fluid_synth_channel_pressure(synth, channel, p) (FLUID_FAILED)
+#endif
+
 #define SOUNDFONT_TEXT N_("Sound fonts (required)")
 #define SOUNDFONT_LONGTEXT N_( \
     "A sound fonts file is required for software synthesis." )