games/scummvm: Unbreak build with FLUIDSYNTH=on

After commit 4c2db26adf7d the build, if the non-default option
FLUIDSYNTH is enabled, fails with:

In file included from audio/softsynth/fluidsynth.cpp:32:
In file included from /usr/local/include/fluidsynth.h:100:
[..]
audio/softsynth/fluidsynth.cpp:252:3: error:
   no matching function for call to 'fluid_sfloader_set_callbacks'
                fluid_sfloader_set_callbacks(soundFontMemoryLoader,
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/fluidsynth/sfont.h:172:20: note:
   candidate function not viable:
   no known conversion from 'int (void *, int, void *)' to
   'fluid_sfloader_callback_read_t' (aka 'int (*)(void *, long long, void *)') for 3rd argument
FLUIDSYNTH_API int fluid_sfloader_set_callbacks(fluid_sfloader_t *loader,
                   ^

Obtained from:	NetBSD
MFH:		2021Q4

1 files changed, 31 insertions, 0 deletions

diff --git a/games/scummvm/files/patch-audio_softsynth_fluidsynth.cpp b/games/scummvm/files/patch-audio_softsynth_fluidsynth.cpp
new file mode 100644
index 000000000000..e538d47910b4
--- /dev/null
+++ b/games/scummvm/files/patch-audio_softsynth_fluidsynth.cpp
@@ -0,0 +1,31 @@
+Fix build with FluidSynth >= 2.2.0
+
+Obtained from:
+
+https://github.com/NetBSD/pkgsrc/commit/25b35d66ba06339121f9ed19cc0a307a7b61dfc9
+
+--- audio/softsynth/fluidsynth.cpp.orig	2020-09-13 21:05:37 UTC
++++ audio/softsynth/fluidsynth.cpp
+@@ -144,11 +144,11 @@ static void *SoundFontMemLoader_open(const char *filen
+ 	return p;
+ }
+ 
+-static int SoundFontMemLoader_read(void *buf, int count, void *handle) {
++static int SoundFontMemLoader_read(void *buf, long long count, void *handle) {
+ 	return ((Common::SeekableReadStream *) handle)->read(buf, count) == (uint32)count ? FLUID_OK : FLUID_FAILED;
+ }
+ 
+-static int SoundFontMemLoader_seek(void *handle, long offset, int origin) {
++static int SoundFontMemLoader_seek(void *handle, long long offset, int origin) {
+ 	return ((Common::SeekableReadStream *) handle)->seek(offset, origin) ? FLUID_OK : FLUID_FAILED;
+ }
+ 
+@@ -157,7 +157,7 @@ static int SoundFontMemLoader_close(void *handle) {
+ 	return FLUID_OK;
+ }
+ 
+-static long SoundFontMemLoader_tell(void *handle) {
++static long long SoundFontMemLoader_tell(void *handle) {
+ 	return ((Common::SeekableReadStream *) handle)->pos();
+ }
+ #endif