From b508a760c88e8af6e852561dd7cf50edd7c601b9 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Sat, 24 Nov 2018 10:07:48 -0800
Subject: Use a normal vector to store buffer data

---
 OpenAL32/Include/alBuffer.h | 43 ++++++++++++++++++++++---------------------
 OpenAL32/alBuffer.cpp       | 30 +++++++++++-------------------
 2 files changed, 33 insertions(+), 40 deletions(-)

(limited to 'OpenAL32')

diff --git a/OpenAL32/Include/alBuffer.h b/OpenAL32/Include/alBuffer.h
index a99c06fc..54c17670 100644
--- a/OpenAL32/Include/alBuffer.h
+++ b/OpenAL32/Include/alBuffer.h
@@ -7,6 +7,7 @@
 
 #include "inprogext.h"
 #include "atomic.h"
+#include "vector.h"
 
 
 /* User formats */
@@ -88,37 +89,37 @@ inline ALsizei FrameSizeFromFmt(enum FmtChannels chans, enum FmtType type)
 }
 
 
-typedef struct ALbuffer {
-    ALvoid  *data;
+struct ALbuffer {
+    al::vector<ALbyte,16> mData;
 
-    ALsizei Frequency;
-    ALbitfieldSOFT Access;
-    ALsizei SampleLen;
+    ALsizei Frequency{0};
+    ALbitfieldSOFT Access{0u};
+    ALsizei SampleLen{0};
 
-    enum FmtChannels FmtChannels;
-    enum FmtType     FmtType;
-    ALsizei BytesAlloc;
+    enum FmtChannels FmtChannels{};
+    enum FmtType     FmtType{};
+    ALsizei BytesAlloc{0};
 
-    enum UserFmtType OriginalType;
-    ALsizei OriginalSize;
-    ALsizei OriginalAlign;
+    enum UserFmtType OriginalType{};
+    ALsizei OriginalSize{0};
+    ALsizei OriginalAlign{0};
 
-    ALsizei LoopStart;
-    ALsizei LoopEnd;
+    ALsizei LoopStart{0};
+    ALsizei LoopEnd{0};
 
-    ATOMIC(ALsizei) UnpackAlign;
-    ATOMIC(ALsizei) PackAlign;
+    std::atomic<ALsizei> UnpackAlign{0};
+    std::atomic<ALsizei> PackAlign{0};
 
-    ALbitfieldSOFT MappedAccess;
-    ALsizei MappedOffset;
-    ALsizei MappedSize;
+    ALbitfieldSOFT MappedAccess{0u};
+    ALsizei MappedOffset{0};
+    ALsizei MappedSize{0};
 
     /* Number of times buffer was attached to a source (deletion can only occur when 0) */
-    RefCount ref;
+    RefCount ref{0u};
 
     /* Self ID */
-    ALuint id;
-} ALbuffer;
+    ALuint id{0};
+};
 
 ALvoid ReleaseALBuffers(ALCdevice *device);
 
diff --git a/OpenAL32/alBuffer.cpp b/OpenAL32/alBuffer.cpp
index 196dcd22..0580b33a 100644
--- a/OpenAL32/alBuffer.cpp
+++ b/OpenAL32/alBuffer.cpp
@@ -110,8 +110,6 @@ void FreeBuffer(ALCdevice *device, ALbuffer *buffer)
     ALsizei lidx = id >> 6;
     ALsizei slidx = id & 0x3f;
 
-    al_free(buffer->data);
-    buffer->data = nullptr;
     buffer->~ALbuffer();
 
     device->BufferList[lidx].FreeMask |= U64(1) << slidx;
@@ -290,41 +288,37 @@ void LoadData(ALCcontext *context, ALbuffer *ALBuf, ALuint freq, ALsizei size, U
         newsize = (newsize+15) & ~0xf;
     if(newsize != ALBuf->BytesAlloc)
     {
-        void *temp{al_malloc(16, (size_t)newsize)};
-        if(UNLIKELY(!temp && newsize))
-            SETERR_RETURN(context, AL_OUT_OF_MEMORY,, "Failed to allocate %d bytes of storage",
-                          newsize);
+        al::vector<ALbyte,16> newdata(newsize);
         if((access&AL_PRESERVE_DATA_BIT_SOFT))
         {
             ALsizei tocopy{std::min(newsize, ALBuf->BytesAlloc)};
-            if(tocopy > 0) memcpy(temp, ALBuf->data, tocopy);
+            std::copy_n(ALBuf->mData.begin(), tocopy, newdata.begin());
         }
-        al_free(ALBuf->data);
-        ALBuf->data = temp;
+        ALBuf->mData = std::move(newdata);
         ALBuf->BytesAlloc = newsize;
     }
 
     if(SrcType == UserFmtIMA4)
     {
         assert(DstType == FmtShort);
-        if(data != nullptr && ALBuf->data != nullptr)
-            Convert_ALshort_ALima4(static_cast<ALshort*>(ALBuf->data),
+        if(data != nullptr && !ALBuf->mData.empty())
+            Convert_ALshort_ALima4(reinterpret_cast<ALshort*>(ALBuf->mData.data()),
                 static_cast<const ALubyte*>(data), NumChannels, frames, align);
         ALBuf->OriginalAlign = align;
     }
     else if(SrcType == UserFmtMSADPCM)
     {
         assert(DstType == FmtShort);
-        if(data != nullptr && ALBuf->data != nullptr)
-            Convert_ALshort_ALmsadpcm(static_cast<ALshort*>(ALBuf->data),
+        if(data != nullptr && !ALBuf->mData.empty())
+            Convert_ALshort_ALmsadpcm(reinterpret_cast<ALshort*>(ALBuf->mData.data()),
                 static_cast<const ALubyte*>(data), NumChannels, frames, align);
         ALBuf->OriginalAlign = align;
     }
     else
     {
         assert((long)SrcType == (long)DstType);
-        if(data != nullptr && ALBuf->data != nullptr)
-            memcpy(ALBuf->data, data, frames*FrameSize);
+        if(data != nullptr && !ALBuf->mData.empty())
+            std::copy_n(static_cast<const ALbyte*>(data), frames*FrameSize, ALBuf->mData.begin());
         ALBuf->OriginalAlign = 1;
     }
     ALBuf->OriginalSize = size;
@@ -601,7 +595,7 @@ AL_API void* AL_APIENTRY alMapBufferSOFT(ALuint buffer, ALsizei offset, ALsizei
                        offset, length, buffer);
         else
         {
-            void *retval = (ALbyte*)albuf->data + offset;
+            void *retval = albuf->mData.data() + offset;
             albuf->MappedAccess = access;
             albuf->MappedOffset = offset;
             albuf->MappedSize = length;
@@ -730,7 +724,7 @@ AL_API ALvoid AL_APIENTRY alBufferSubDataSOFT(ALuint buffer, ALenum format, cons
             offset = offset/byte_align * align * frame_size;
             length = length/byte_align * align;
 
-            void *dst = static_cast<ALbyte*>(albuf->data) + offset;
+            void *dst = albuf->mData.data() + offset;
             if(srctype == UserFmtIMA4 && albuf->FmtType == FmtShort)
                 Convert_ALshort_ALima4(static_cast<ALshort*>(dst),
                     static_cast<const ALubyte*>(data), num_chans, length, align);
@@ -1196,8 +1190,6 @@ ALvoid ReleaseALBuffers(ALCdevice *device)
             ALsizei idx = CTZ64(usemask);
             ALbuffer *buffer = sublist.Buffers + idx;
 
-            al_free(buffer->data);
-            buffer->data = nullptr;
             buffer->~ALbuffer();
 
             ++leftover;
-- 
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