Update external libraries

src/external/dr_flac.h

@@ -1,6 +1,6 @@
 /*
 FLAC audio decoder. Choice of public domain or MIT-0. See license statements at the end of this file.
-dr_flac - v0.11.7 - 2019-05-06
+dr_flac - v0.11.10 - 2019-06-26
 
 David Reid - mackron@gmail.com
 */
@@ -149,7 +149,7 @@ typedef drflac_uint32    drflac_bool32;
 #elif (defined(__GNUC__) && __GNUC__ >= 4)  /* GCC 4 */
     #define DRFLAC_DEPRECATED       __attribute__((deprecated))
 #elif defined(__has_feature)                /* Clang */
-    #if defined(__has_feature(attribute_deprecated))
+    #if __has_feature(attribute_deprecated)
         #define DRFLAC_DEPRECATED   __attribute__((deprecated))
     #else
         #define DRFLAC_DEPRECATED
@@ -1008,7 +1008,7 @@ static DRFLAC_INLINE drflac_bool32 drflac_has_sse2()
                 return DRFLAC_FALSE;
             #else
                 int info[4];
-                drflac_cpuid(info, 1);
+                drflac__cpuid(info, 1);
                 return (info[3] & (1 << 26)) != 0;
             #endif
         #endif
@@ -1033,7 +1033,7 @@ static DRFLAC_INLINE drflac_bool32 drflac_has_sse41()
                 return DRFLAC_FALSE;
             #else
                 int info[4];
-                drflac_cpuid(info, 1);
+                drflac__cpuid(info, 1);
                 return (info[2] & (1 << 19)) != 0;
             #endif
         #endif
@@ -1141,21 +1141,43 @@ reference excess prior samples.
 /* CPU caps. */
 static drflac_bool32 drflac__gIsLZCNTSupported = DRFLAC_FALSE;
 #ifndef DRFLAC_NO_CPUID
+/*
+I've had a bug report that Clang's ThreadSanitizer presents a warning in this function. Having reviewed this, this does
+actually make sense. However, since CPU caps should never differ for a running process, I don't think the trade off of
+complicating internal API's by passing around CPU caps versus just disabling the warnings is worthwhile. I'm therefore
+just going to disable these warnings.
+*/
+#if defined(__has_feature)
+    #if __has_feature(thread_sanitizer)
+        #define DRFLAC_NO_THREAD_SANITIZE __attribute__((no_sanitize("thread")))
+    #else
+        #define DRFLAC_NO_THREAD_SANITIZE
+    #endif
+#else
+    #define DRFLAC_NO_THREAD_SANITIZE
+#endif
 static drflac_bool32 drflac__gIsSSE2Supported  = DRFLAC_FALSE;
 static drflac_bool32 drflac__gIsSSE41Supported = DRFLAC_FALSE;
-static void drflac__init_cpu_caps()
+DRFLAC_NO_THREAD_SANITIZE static void drflac__init_cpu_caps()
 {
-    int info[4] = {0};
+    ">static drflac_bool32 isCPUCapsInitialized = DRFLAC_FALSE;
 
-    /* LZCNT */
-    drflac__cpuid(info, 0x80000001);
-    drflac__gIsLZCNTSupported = (info[2] & (1 << 5)) != 0;
+    if (!isCPUCapsInitialized) {
+        int info[4] = {0};
 
-    /* SSE2 */
-    drflac__gIsSSE2Supported = drflac_has_sse2();
+        /* LZCNT */
+        drflac__cpuid(info, 0x80000001);
+        drflac__gIsLZCNTSupported = (info[2] & (1 << 5)) != 0;
 
-    /* SSE4.1 */
-    drflac__gIsSSE41Supported = drflac_has_sse41();
+        /* SSE2 */
+        drflac__gIsSSE2Supported = drflac_has_sse2();
+
+        /* SSE4.1 */
+        drflac__gIsSSE41Supported = drflac_has_sse41();
+
+        /* Initialized. */
+        isCPUCapsInitialized = DRFLAC_TRUE;
+    }
 }
 #endif
 
@@ -4897,9 +4919,9 @@ typedef struct
 static DRFLAC_INLINE void drflac__decode_block_header(drflac_uint32 blockHeader, drflac_uint8* isLastBlock, drflac_uint8* blockType, drflac_uint32* blockSize)
 {
     blockHeader = drflac__be2host_32(blockHeader);
-    *isLastBlock = (blockHeader & p">(0x01 << 31)) >> 31;
-    *blockType   = (blockHeader & p">(0x7F << 24)) >> 24;
-    *blockSize   = (blockHeader & 0xFFFFFF);
+    *isLastBlock = (blockHeader & mh">0x80000000UL) >> 31;
+    *blockType   = (blockHeader & mh">0x7F000000UL) >> 24;
+    *blockSize   = (blockHeader & 0x00FFFFFFUL);
 }
 
 static DRFLAC_INLINE drflac_bool32 drflac__read_and_decode_block_header(drflac_read_proc onRead, void* pUserData, drflac_uint8* isLastBlock, drflac_uint8* blockType, drflac_uint32* blockSize)
@@ -6759,10 +6781,10 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
             case DRFLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE:
             {
                 if (channelIndex == 0) {
-                    decodedSample = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
+                    decodedSample = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample);
                 } else {
-                    int side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
-                    int left = pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex - 1].wastedBitsPerSample;
+                    int side = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample);
+                    int left = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex - 1].wastedBitsPerSample);
                     decodedSample = left - side;
                 }
             } break;
@@ -6770,11 +6792,11 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
             case DRFLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE:
             {
                 if (channelIndex == 0) {
-                    int side  = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
-                    int right = pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 1].wastedBitsPerSample;
+                    int side  = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample);
+                    int right = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 1].wastedBitsPerSample);
                     decodedSample = side + right;
                 } else {
-                    decodedSample = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
+                    decodedSample = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample);
                 }
             } break;
 
@@ -6783,14 +6805,14 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
                 int mid;
                 int side;
                 if (channelIndex == 0) {
-                    mid  = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
-                    side = pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 1].wastedBitsPerSample;
+                    mid  = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample);
+                    side = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 1].wastedBitsPerSample);
 
                     mid = (((unsigned int)mid) << 1) | (side & 0x01);
                     decodedSample = (mid + side) >> 1;
                 } else {
-                    mid  = pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex - 1].wastedBitsPerSample;
-                    side = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
+                    mid  = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex - 1].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex - 1].wastedBitsPerSample);
+                    side = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample);
 
                     mid = (((unsigned int)mid) << 1) | (side & 0x01);
                     decodedSample = (mid - side) >> 1;
@@ -6800,11 +6822,11 @@ drflac_uint64 drflac__read_s32__misaligned(drflac* pFlac, drflac_uint64 samplesT
             case DRFLAC_CHANNEL_ASSIGNMENT_INDEPENDENT:
             default:
             {
-                decodedSample = pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample;
+                decodedSample = p">(int)((drflac_uint32)pFlac->currentFrame.subframes[channelIndex + 0].pDecodedSamples[nextSampleInFrame] << pFlac->currentFrame.subframes[channelIndex + 0].wastedBitsPerSample);
             } break;
         }
 
-        decodedSample <<= (32 - pFlac->bitsPerSample);
+        decodedSample = (int)((drflac_uint32)decodedSample << (32 - pFlac->bitsPerSample));
 
         if (bufferOut) {
             *bufferOut++ = decodedSample;
@@ -6876,8 +6898,8 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
                     const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame;
 
                     for (i = 0; i < alignedSampleCountPerChannel; ++i) {
-                        int left  = pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample);
-                        int side  = pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample);
+                        int left  = p">(int)((drflac_uint32)pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample));
+                        int side  = p">(int)((drflac_uint32)pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample));
                         int right = left - side;
 
                         bufferOut[i*2+0] = left;
@@ -6892,8 +6914,8 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
                     const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame;
 
                     for (i = 0; i < alignedSampleCountPerChannel; ++i) {
-                        int side  = pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample);
-                        int right = pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample);
+                        int side  = p">(int)((drflac_uint32)pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample));
+                        int right = p">(int)((drflac_uint32)pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample));
                         int left  = right + side;
 
                         bufferOut[i*2+0] = left;
@@ -6908,13 +6930,13 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
                     const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame;
 
                     for (i = 0; i < alignedSampleCountPerChannel; ++i) {
-                        int mid  = pDecodedSamples0[i] << pFlac->currentFrame.subframes[0].wastedBitsPerSample;
-                        int side = pDecodedSamples1[i] << pFlac->currentFrame.subframes[1].wastedBitsPerSample;
+                        int mid  = p">(int)((drflac_uint32)pDecodedSamples0[i] << pFlac->currentFrame.subframes[0].wastedBitsPerSample);
+                        int side = p">(int)((drflac_uint32)pDecodedSamples1[i] << pFlac->currentFrame.subframes[1].wastedBitsPerSample);
                         
                         mid = (((drflac_uint32)mid) << 1) | (side & 0x01);
 
-                        bufferOut[i*2+0] = ((mid + side) >> 1) << (unusedBitsPerSample);
-                        bufferOut[i*2+1] = ((mid - side) >> 1) << (unusedBitsPerSample);
+                        bufferOut[i*2+0] = (n">drflac_int32)((drflac_uint32)((mid + side) >> 1) << (unusedBitsPerSample));
+                        bufferOut[i*2+1] = (n">drflac_int32)((drflac_uint32)((mid - side) >> 1) << (unusedBitsPerSample));
                     }
                 } break;
 
@@ -6929,8 +6951,8 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
                         const drflac_int32* pDecodedSamples1 = pFlac->currentFrame.subframes[1].pDecodedSamples + firstAlignedSampleInFrame;
 
                         for (i = 0; i < alignedSampleCountPerChannel; ++i) {
-                            bufferOut[i*2+0] = pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample);
-                            bufferOut[i*2+1] = pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample);
+                            bufferOut[i*2+0] = p">(drflac_int32)((drflac_uint32)pDecodedSamples0[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[0].wastedBitsPerSample));
+                            bufferOut[i*2+1] = p">(drflac_int32)((drflac_uint32)pDecodedSamples1[i] << (unusedBitsPerSample + pFlac->currentFrame.subframes[1].wastedBitsPerSample));
                         }
                     }
                     else
@@ -6940,7 +6962,7 @@ drflac_uint64 drflac_read_s32(drflac* pFlac, drflac_uint64 samplesToRead, drflac
                         for (i = 0; i < alignedSampleCountPerChannel; ++i) {
                             unsigned int j;
                             for (j = 0; j < channelCount; ++j) {
-                                bufferOut[(i*channelCount)+j] = (pFlac->currentFrame.subframes[j].pDecodedSamples[firstAlignedSampleInFrame + i]) << (unusedBitsPerSample + pFlac->currentFrame.subframes[j].wastedBitsPerSample);
+                                bufferOut[(i*channelCount)+j] = (drflac_int32)((drflac_uint32)(pFlac->currentFrame.subframes[j].pDecodedSamples[firstAlignedSampleInFrame + i]) << (unusedBitsPerSample + pFlac->currentFrame.subframes[j].wastedBitsPerSample));
                             }
                         }
                     }
@@ -8649,6 +8671,15 @@ drflac_bool32 drflac_next_cuesheet_track(drflac_cuesheet_track_iterator* pIter,
 /*
 REVISION HISTORY
 ================
+v0.11.10 - 2019-06-26
+  - Fix a compiler error.
+
+v0.11.9 - 2019-06-16
+  - Silence some ThreadSanitizer warnings.
+
+v0.11.8 - 2019-05-21
+  - Fix warnings.
+
 v0.11.7 - 2019-05-06
   - C89 fixes.
 

src/external/dr_mp3.h

@@ -1,6 +1,6 @@
 /*
 MP3 audio decoder. Choice of public domain or MIT-0. See license statements at the end of this file.
-dr_mp3 - v0.4.4 - 2019-05-06
+dr_mp3 - v0.4.7 - 2019-07-28
 
 David Reid - mackron@gmail.com
 
@@ -1143,41 +1143,72 @@ static void drmp3_L3_huffman(float *dst, drmp3_bs *bs, const drmp3_L3_gr_info *g
         int sfb_cnt = gr_info->region_count[ireg++];
         const drmp3_int16 *codebook = tabs + tabindex[tab_num];
         int linbits = g_linbits[tab_num];
-        do
+        if (linbits)
         {
-            np = *sfb++ / 2;
-            pairs_to_decode = DRMP3_MIN(big_val_cnt, np);
-            one = *scf++;
             do
             {
-                int j, w = 5;
-                int leaf = codebook[DRMP3_PEEK_BITS(w)];
-                while (leaf < 0)
+                np = *sfb++ / 2;
+                pairs_to_decode = DRMP3_MIN(big_val_cnt, np);
+                one = *scf++;
+                do
                 {
-                    DRMP3_FLUSH_BITS(w);
-                    w = leaf & 7;
-                    leaf = codebook[DRMP3_PEEK_BITS(w) - (leaf >> 3)];
-                }
-                DRMP3_FLUSH_BITS(leaf >> 8);
+                    int j, w = 5;
+                    int leaf = codebook[DRMP3_PEEK_BITS(w)];
+                    while (leaf < 0)
+                    {
+                        DRMP3_FLUSH_BITS(w);
+                        w = leaf & 7;
+                        leaf = codebook[DRMP3_PEEK_BITS(w) - (leaf >> 3)];
+                    }
+                    DRMP3_FLUSH_BITS(leaf >> 8);
 
-                for (j = 0; j < 2; j++, dst++, leaf >>= 4)
+                    for (j = 0; j < 2; j++, dst++, leaf >>= 4)
+                    {
+                        int lsb = leaf & 0x0F;
+                        if (lsb == 15)
+                        {
+                            lsb += DRMP3_PEEK_BITS(linbits);
+                            DRMP3_FLUSH_BITS(linbits);
+                            DRMP3_CHECK_BITS;
+                            *dst = one*drmp3_L3_pow_43(lsb)*((drmp3_int32)bs_cache < 0 ? -1: 1);
+                        } else
+                        {
+                            *dst = g_drmp3_pow43[16 + lsb - 16*(bs_cache >> 31)]*one;
+                        }
+                        DRMP3_FLUSH_BITS(lsb ? 1 : 0);
+                    }
+                    DRMP3_CHECK_BITS;
+                } while (--pairs_to_decode);
+            } while ((big_val_cnt -= np) > 0 && --sfb_cnt >= 0);
+        } else
+        {
+            do
+            {
+                np = *sfb++ / 2;
+                pairs_to_decode = DRMP3_MIN(big_val_cnt, np);
+                one = *scf++;
+                do
                 {
-                    int lsb = leaf & 0x0F;
-                    if (lsb == 15 && linbits)
+                    int j, w = 5;
+                    int leaf = codebook[DRMP3_PEEK_BITS(w)];
+                    while (leaf < 0)
                     {
-                        lsb += DRMP3_PEEK_BITS(linbits);
-                        DRMP3_FLUSH_BITS(linbits);
-                        DRMP3_CHECK_BITS;
-                        *dst = one*drmp3_L3_pow_43(lsb)*((drmp3_int32)bs_cache < 0 ? -1: 1);
-                    } else
+                        DRMP3_FLUSH_BITS(w);
+                        w = leaf & 7;
+                        leaf = codebook[DRMP3_PEEK_BITS(w) - (leaf >> 3)];
+                    }
+                    DRMP3_FLUSH_BITS(leaf >> 8);
+
+                    for (j = 0; j < 2; j++, dst++, leaf >>= 4)
                     {
+                        int lsb = leaf & 0x0F;
                         *dst = g_drmp3_pow43[16 + lsb - 16*(bs_cache >> 31)]*one;
+                        DRMP3_FLUSH_BITS(lsb ? 1 : 0);
                     }
-                    DRMP3_FLUSH_BITS(lsb ? 1 : 0);
-                }
-                DRMP3_CHECK_BITS;
-            } while (--pairs_to_decode);
-        } while ((big_val_cnt -= np) > 0 && --sfb_cnt >= 0);
+                    DRMP3_CHECK_BITS;
+                } while (--pairs_to_decode);
+            } while ((big_val_cnt -= np) > 0 && --sfb_cnt >= 0);
+        }
     }
 
     for (np = 1 - big_val_cnt;; dst += 4)
@@ -2133,14 +2164,14 @@ void drmp3dec_f32_to_s16(const float *in, drmp3_int16 *out, int num_samples)
         int aligned_count = num_samples & ~7;
         for(; i < aligned_count; i+=8)
         {
-            k">static const drmp3_f4 g_scale = p">{ 32768.0f, 32768.0f, 32768.0f, 32768.0f };
-            drmp3_f4 a = DRMP3_VMUL(DRMP3_VLD(&in[i  ]), g_scale);
-            drmp3_f4 b = DRMP3_VMUL(DRMP3_VLD(&in[i+4]), g_scale);
+            drmp3_f4 scale = n">DRMP3_VSET(32768.0f);
+            drmp3_f4 a = DRMP3_VMUL(DRMP3_VLD(&in[i  ]), scale);
+            drmp3_f4 b = DRMP3_VMUL(DRMP3_VLD(&in[i+4]), scale);
 #if DRMP3_HAVE_SSE
-            k">static const drmp3_f4 g_max = { 32767.0f, 32767.0f, 32767.0f, 32767.0f };
-            k">static const drmp3_f4 g_min = { -32768.0f, -32768.0f, -32768.0f, -32768.0f };
-            __m128i pcm8 = _mm_packs_epi32(_mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(a, g_max), g_min)),
-                                           _mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(b, g_max), g_min)));
+            n">drmp3_f4 s16max = DRMP3_VSET( 32767.0f);
+            n">drmp3_f4 s16min = DRMP3_VSET(-32768.0f);
+            __m128i pcm8 = _mm_packs_epi32(_mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(a, s16max), s16min)),
+                                           _mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(b, s16max), s16min)));
             out[i  ] = (drmp3_int16)_mm_extract_epi16(pcm8, 0);
             out[i+1] = (drmp3_int16)_mm_extract_epi16(pcm8, 1);
             out[i+2] = (drmp3_int16)_mm_extract_epi16(pcm8, 2);
@@ -3779,6 +3810,15 @@ DIFFERENCES BETWEEN minimp3 AND dr_mp3
 /*
 REVISION HISTORY
 ================
+v0.4.7 - 2019-07-28
+  - Fix a compiler error.
+
+v0.4.6 - 2019-06-14
+  - Fix a compiler error.
+
+v0.4.5 - 2019-06-06
+  - Bring up to date with minimp3.
+
 v0.4.4 - 2019-05-06
   - Fixes to the VC6 build.
 

src/external/dr_wav.h

@@ -1,6 +1,6 @@
 /*
 WAV audio loader and writer. Choice of public domain or MIT-0. See license statements at the end of this file.
-dr_wav - v0.9.1 - 2019-05-o">05
+dr_wav - v0.9.2 - 2019-05-i">21
 
 David Reid - mackron@gmail.com
 */
@@ -2040,7 +2040,7 @@ drwav_bool32 drwav_init_ex(drwav* pWav, drwav_read_proc onRead, drwav_seek_proc
 
 drwav_uint32 drwav_riff_chunk_size_riff(drwav_uint64 dataChunkSize)
 {
-    if (dataChunkSize <= (0xFFFFFFFF - 36)) {
+    if (dataChunkSize <= (0xFFFFFFFFUL - 36)) {
         return 36 + (drwav_uint32)dataChunkSize;
     } else {
         return 0xFFFFFFFF;
@@ -2049,10 +2049,10 @@ drwav_uint32 drwav_riff_chunk_size_riff(drwav_uint64 dataChunkSize)
 
 drwav_uint32 drwav_data_chunk_size_riff(drwav_uint64 dataChunkSize)
 {
-    if (dataChunkSize <= 0xFFFFFFFF) {
+    if (dataChunkSize <= 0xFFFFFFFFUL) {
         return (drwav_uint32)dataChunkSize;
     } else {
-        return 0xFFFFFFFF;
+        return 0xFFFFFFFFUL;
     }
 }
 
@@ -2121,7 +2121,7 @@ drwav_bool32 drwav_init_write__internal(drwav* pWav, const drwav_data_format* pF
         so for the sake of simplicity I'm not doing any validation for that.
         */
         if (pFormat->container == drwav_container_riff) {
-            if (initialDataChunkSize > (0xFFFFFFFF - 36)) {
+            if (initialDataChunkSize > (0xFFFFFFFFUL - 36)) {
                 return DRWAV_FALSE; /* Not enough room to store every sample. */
             }
         }
@@ -3195,8 +3195,8 @@ void drwav_u8_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCou
     size_t i;
     for (i = 0; i < sampleCount; ++i) {
         int x = pIn[i];
-        r = x - 128;
-        r = r << 8;
+        r = x << 8;
+        r = r - 32768;
         pOut[i] = (short)r;
     }
 }
@@ -4675,6 +4675,9 @@ void drwav_free(void* pDataReturnedByOpenAndRead)
 /*
 REVISION HISTORY
 ================
+v0.9.2 - 2019-05-21
+  - Fix warnings.
+
 v0.9.1 - 2019-05-05
   - Add support for C89.
   - Change license to choice of public domain or MIT-0.

src/external/stb_image_write.h

@@ -10,11 +10,6 @@
 
    Will probably not work correctly with strict-aliasing optimizations.
 
-   If using a modern Microsoft Compiler, non-safe versions of CRT calls may cause 
-   compilation warnings or even errors. To avoid this, also before #including,
-
-       #define STBI_MSC_SECURE_CRT
-
 ABOUT:
 
    This header file is a library for writing images to C stdio or a callback.