From 3156b17057569fb8d3074603d8d8b4ba0dd73c57 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Sun, 16 Feb 2020 23:49:29 -0800
Subject: [PATCH] Stub out an interface for a callback-driven buffer

---
 al/buffer.cpp   | 41 +++++++++++++++++++++++++++++++++++++++++
 alc/alc.cpp     |  5 +++++
 alc/inprogext.h | 17 +++++++++++++++++
 3 files changed, 63 insertions(+)

diff --git a/al/buffer.cpp b/al/buffer.cpp
index de8abeb6..c7acb9aa 100644
--- a/al/buffer.cpp
+++ b/al/buffer.cpp
@@ -1376,6 +1376,47 @@ START_API_FUNC
 END_API_FUNC
 
 
+AL_API void AL_APIENTRY alBufferCallbackSOFT(ALuint /*buffer*/, ALenum /*format*/, ALsizei /*freq*/, LPALBUFFERCALLBACKTYPESOFT /*callback*/, ALvoid* /*userptr*/, ALbitfieldSOFT /*flags*/)
+START_API_FUNC
+{
+    ContextRef context{GetContextRef()};
+    if UNLIKELY(!context) return;
+
+    context->setError(AL_INVALID_OPERATION, "alBufferCallbackSOFT not functional");
+}
+END_API_FUNC
+
+AL_API void AL_APIENTRY alGetBufferPtrSOFT(ALuint /*buffer*/, ALenum /*param*/, ALvoid** /*value*/)
+START_API_FUNC
+{
+    ContextRef context{GetContextRef()};
+    if UNLIKELY(!context) return;
+
+    context->setError(AL_INVALID_OPERATION, "alGetBufferPtrSOFT not functional");
+}
+END_API_FUNC
+
+AL_API void AL_APIENTRY alGetBuffer3PtrSOFT(ALuint /*buffer*/, ALenum /*param*/, ALvoid** /*value1*/, ALvoid** /*value2*/, ALvoid** /*value3*/)
+START_API_FUNC
+{
+    ContextRef context{GetContextRef()};
+    if UNLIKELY(!context) return;
+
+    context->setError(AL_INVALID_OPERATION, "alGetBuffer3PtrSOFT not functional");
+}
+END_API_FUNC
+
+AL_API void AL_APIENTRY alGetBufferPtrvSOFT(ALuint /*buffer*/, ALenum /*param*/, ALvoid** /*values*/)
+START_API_FUNC
+{
+    ContextRef context{GetContextRef()};
+    if UNLIKELY(!context) return;
+
+    context->setError(AL_INVALID_OPERATION, "alGetBufferPtrvSOFT not functional");
+}
+END_API_FUNC
+
+
 ALuint BytesFromFmt(FmtType type) noexcept
 {
     switch(type)
diff --git a/alc/alc.cpp b/alc/alc.cpp
index 52edbe1e..948fbfb1 100644
--- a/alc/alc.cpp
+++ b/alc/alc.cpp
@@ -393,6 +393,11 @@ const struct {
     DECL(alEventCallbackSOFT),
     DECL(alGetPointerSOFT),
     DECL(alGetPointervSOFT),
+
+    DECL(alBufferCallbackSOFT),
+    DECL(alGetBufferPtrSOFT),
+    DECL(alGetBuffer3PtrSOFT),
+    DECL(alGetBufferPtrvSOFT),
 };
 #undef DECL
 
diff --git a/alc/inprogext.h b/alc/inprogext.h
index ad3ea288..1eeeddf2 100644
--- a/alc/inprogext.h
+++ b/alc/inprogext.h
@@ -77,6 +77,23 @@ AL_API void AL_APIENTRY alGetPointervSOFT(ALenum pname, void **values);
 #define AL_EFFECTSLOT_TARGET_SOFT                0xf000
 #endif
 
+#ifndef AL_SOFT_callback_buffer
+#define AL_SOFT_callback_buffer
+#define AL_BUFFER_CALLBACK_FUNCTION_SOFT         0x19A0
+#define AL_BUFFER_CALLBACK_USER_PARAM_SOFT       0x19A1
+typedef ALsizei (AL_APIENTRY*LPALBUFFERCALLBACKTYPESOFT)(ALvoid *userptr, ALvoid *sampledata, ALsizei numsamples);
+typedef void (AL_APIENTRY*LPALBUFFERCALLBACKSOFT)(ALuint buffer, ALenum format, ALsizei freq, LPALBUFFERCALLBACKTYPESOFT callback, ALvoid *userptr, ALbitfieldSOFT flags);
+typedef void (AL_APIENTRY*LPALGETBUFFERPTRSOFT)(ALuint buffer, ALenum param, ALvoid **value);
+typedef void (AL_APIENTRY*LPALGETBUFFER3PTRSOFT)(ALuint buffer, ALenum param, ALvoid **value1, ALvoid **value2, ALvoid **value3);
+typedef void (AL_APIENTRY*LPALGETBUFFERPTRVSOFT)(ALuint buffer, ALenum param, ALvoid **values);
+#ifdef AL_ALEXT_PROTOTYPES
+AL_API void AL_APIENTRY alBufferCallbackSOFT(ALuint buffer, ALenum format, ALsizei freq, LPALBUFFERCALLBACKTYPESOFT callback, ALvoid *userptr, ALbitfieldSOFT flags);
+AL_API void AL_APIENTRY alGetBufferPtrSOFT(ALuint buffer, ALenum param, ALvoid **ptr);
+AL_API void AL_APIENTRY alGetBuffer3PtrSOFT(ALuint buffer, ALenum param, ALvoid **ptr0, ALvoid **ptr1, ALvoid **ptr2);
+AL_API void AL_APIENTRY alGetBufferPtrvSOFT(ALuint buffer, ALenum param, ALvoid **ptr);
+#endif
+#endif
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif