More C89 fixes.

extras/dr_flac.h

@@ -900,7 +900,7 @@ DRFLAC_DEPRECATED float* drflac_open_and_decode_memory_f32(const void* data, siz
     #if defined(DRFLAC_X64) || defined(DRFLAC_X86)
         #if defined(_MSC_VER) && !defined(__clang__)
             /* MSVC. */
-            #if !defined(DRFLAC_NO_SSE2)   /* Assume all MSVC compilers support SSE2 intrinsics. */
+            #if _MSC_VER >= 1400 && !defined(DRFLAC_NO_SSE2)    /* 2005 */
                 #define DRFLAC_SUPPORT_SSE2
             #endif
             #if _MSC_VER >= 1600 && !defined(DRFLAC_NO_SSE41)   /* 2010 */
@@ -6521,7 +6521,7 @@ static drflac_bool32 drflac__on_seek_stdio(void* pUserData, int offset, drflac_s
 static FILE* drflac__fopen(const char* filename)
 {
     FILE* pFile;
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && _MSC_VER >= 1400
     if (fopen_s(&pFile, filename, "rb") != 0) {
         return NULL;
     }

extras/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 - v0.4.3 - 2019-05-05
+dr_mp3 - v0.4.4 - 2019-05-06
 
 David Reid - mackron@gmail.com
 
@@ -409,7 +409,6 @@ void drmp3_free(void* p);
 #ifdef DR_MP3_IMPLEMENTATION
 #include <stdlib.h>
 #include <string.h>
-#include <stdint.h>
 #include <limits.h> /* For INT_MAX */
 
 /* Disable SIMD when compiling with TCC for now. */
@@ -464,7 +463,7 @@ void drmp3_free(void* p);
 #define DR_MP3_ONLY_SIMD
 #endif
 
-#if (defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))) || ((defined(__i386__) || defined(__x86_64__)) && defined(__SSE2__))
+#if ((defined(_MSC_VER) && _MSC_VER >= 1400) && (defined(_M_IX86) || defined(_M_X64))) || ((defined(__i386__) || defined(__x86_64__)) && defined(__SSE2__))
 #if defined(_MSC_VER)
 #include <intrin.h>
 #endif
@@ -1169,7 +1168,7 @@ static void drmp3_L3_huffman(float *dst, drmp3_bs *bs, const drmp3_L3_gr_info *g
                         lsb += DRMP3_PEEK_BITS(linbits);
                         DRMP3_FLUSH_BITS(linbits);
                         DRMP3_CHECK_BITS;
-                        *dst = one*drmp3_L3_pow_43(lsb)*((int32_t)bs_cache < 0 ? -1: 1);
+                        *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;
@@ -3259,7 +3258,7 @@ drmp3_bool32 drmp3_seek_to_pcm_frame__seek_table(drmp3* pMP3, drmp3_uint64 frame
     the sample rate is being reduced in my testing. Should work fine when the input and output sample rate is the same
     or a clean multiple.
     */
-    pMP3->src.algo.linear.alpha = pMP3->currentPCMFrame * ((double)pMP3->src.config.sampleRateIn / pMP3->src.config.sampleRateOut);
+    pMP3->src.algo.linear.alpha = (drmp3_int64)pMP3->currentPCMFrame * ((double)pMP3->src.config.sampleRateIn / pMP3->src.config.sampleRateOut); /* <-- Cast to int64 is required for VC6. */
     pMP3->src.algo.linear.alpha = pMP3->src.algo.linear.alpha - (drmp3_uint32)(pMP3->src.algo.linear.alpha);
     if (pMP3->src.algo.linear.alpha > 0) {
         pMP3->src.algo.linear.isPrevFramesLoaded = 1;
@@ -3780,6 +3779,9 @@ DIFFERENCES BETWEEN minimp3 AND dr_mp3
 /*
 REVISION HISTORY
 ================
+v0.4.4 - 2019-05-06
+  - Fixes to the VC6 build.
+
 v0.4.3 - 2019-05-05
   - Use the channel count and/or sample rate of the first MP3 frame instead of DR_MP3_DEFAULT_CHANNELS and
     DR_MP3_DEFAULT_SAMPLE_RATE when they are set to 0. To use the old behaviour, just set the relevant property to

miniaudio.h

@@ -577,11 +577,14 @@ typedef ma_uint16 wchar_t;
 #endif
 #endif
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER)
+    #if _MSC_VER >= 1400
         #define MA_ALIGN(alignment) __declspec(align(alignment))
+    #endif
 #elif !defined(__DMC__)
     #define MA_ALIGN(alignment) __attribute__((aligned(alignment)))
-#else
+#endif
+#ifndef MA_ALIGN
     #define MA_ALIGN(alignment)
 #endif
 
@@ -3183,7 +3186,7 @@ IMPLEMENTATION
 #if defined(MA_X64) || defined(MA_X86)
     #if defined(_MSC_VER) && !defined(__clang__)
         /* MSVC. */
-        #if !defined(MA_NO_SSE2)   /* Assume all MSVC compilers support SSE2 intrinsics. */
+        #if _MSC_VER >= 1400 && !defined(MA_NO_SSE2)   /* 2005 */
             #define MA_SUPPORT_SSE2
         #endif
         /*#if _MSC_VER >= 1600 && !defined(MA_NO_AVX)*/    /* 2010 */
@@ -4142,11 +4145,11 @@ ma_uint32 ma_get_standard_sample_rate_priority_index(ma_uint32 sampleRate)   /*
 ma_uint64 ma_calculate_frame_count_after_src(ma_uint32 sampleRateOut, ma_uint32 sampleRateIn, ma_uint64 frameCountIn)
 {
     double    srcRatio       = (double)sampleRateOut / sampleRateIn;
-    double    frameCountOutF = frameCountIn * srcRatio;
+    double    frameCountOutF = (ma_int64)frameCountIn * srcRatio; /* Cast to int64 required for VC6. */
     ma_uint64 frameCountOut  = (ma_uint64)frameCountOutF;
 
     /* If the output frame count is fractional, make sure we add an extra frame to ensure there's enough room for that last sample. */
-    if ((frameCountOutF - frameCountOut) > 0.0) {
+    if ((frameCountOutF - (ma_int64)frameCountOut) > 0.0) {
         frameCountOut += 1;
     }
 
@@ -6169,12 +6172,11 @@ WASAPI Backend
 
 
 /* Some compilers don't define VerifyVersionInfoW. Need to write this ourselves. */
-#if defined(__DMC__)
+#define MA_WIN32_WINNT_VISTA    0x0600
-#define _WIN32_WINNT_VISTA      0x0600
+#define MA_VER_MINORVERSION     0x01
-#define VER_MINORVERSION        0x01
+#define MA_VER_MAJORVERSION     0x02
-#define VER_MAJORVERSION        0x02
+#define MA_VER_SERVICEPACKMAJOR 0x20
-#define VER_SERVICEPACKMAJOR    0x20
+#define MA_VER_GREATER_EQUAL    0x03
-#define VER_GREATER_EQUAL       0x03
 
 typedef struct  {
     DWORD dwOSVersionInfoSize;
@@ -6190,11 +6192,8 @@ typedef struct  {
     BYTE  wReserved;
 } ma_OSVERSIONINFOEXW;
 
-BOOL WINAPI VerifyVersionInfoW(ma_OSVERSIONINFOEXW* lpVersionInfo, DWORD dwTypeMask, DWORDLONG dwlConditionMask);
+typedef BOOL      (WINAPI * ma_PFNVerifyVersionInfoW) (ma_OSVERSIONINFOEXW* lpVersionInfo, DWORD dwTypeMask, DWORDLONG dwlConditionMask);
-ULONGLONG WINAPI VerSetConditionMask(ULONGLONG dwlConditionMask, DWORD dwTypeBitMask, BYTE dwConditionMask);
+typedef ULONGLONG (WINAPI * ma_PFNVerSetConditionMask)(ULONGLONG dwlConditionMask, DWORD dwTypeBitMask, BYTE dwConditionMask);
-#else
-typedef OSVERSIONINFOEXW ma_OSVERSIONINFOEXW;
-#endif
 
 
 #ifndef PROPERTYKEY_DEFINED
@@ -8680,15 +8679,33 @@ ma_result ma_context_init__wasapi(const ma_context_config* pConfig, ma_context*
     /*
     WASAPI is only supported in Vista SP1 and newer. The reason for SP1 and not the base version of Vista is that event-driven
     exclusive mode does not work until SP1.
+
+    Unfortunately older compilers don't define these functions so we need to dynamically load them in order to avoid a lin error.
     */
     {
         ma_OSVERSIONINFOEXW osvi;
+        ma_handle kernel32DLL;
+        ma_PFNVerifyVersionInfoW _VerifyVersionInfoW;
+        ma_PFNVerSetConditionMask _VerSetConditionMask;
+
+        kernel32DLL = ma_dlopen("kernel32.dll");
+        if (kernel32DLL == NULL) {
+            return MA_NO_BACKEND;
+        }
+
+        _VerifyVersionInfoW = (ma_PFNVerifyVersionInfoW)ma_dlsym(kernel32DLL, "VerifyVersionInfoW");
+        _VerSetConditionMask = (ma_PFNVerSetConditionMask)ma_dlsym(kernel32DLL, "VerSetConditionMask");
+        if (_VerifyVersionInfoW == NULL || _VerSetConditionMask == NULL) {
+            ma_dlclose(kernel32DLL);
+            return MA_NO_BACKEND;
+        }
+
         ma_zero_object(&osvi);
         osvi.dwOSVersionInfoSize = sizeof(osvi);
-        osvi.dwMajorVersion = HIBYTE(_WIN32_WINNT_VISTA);
+        osvi.dwMajorVersion = HIBYTE(MA_WIN32_WINNT_VISTA);
-        osvi.dwMinorVersion = LOBYTE(_WIN32_WINNT_VISTA);
+        osvi.dwMinorVersion = LOBYTE(MA_WIN32_WINNT_VISTA);
         osvi.wServicePackMajor = 1;
-        if (VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, VerSetConditionMask(VerSetConditionMask(VerSetConditionMask(0, VER_MAJORVERSION, VER_GREATER_EQUAL), VER_MINORVERSION, VER_GREATER_EQUAL), VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL))) {
+        if (_VerifyVersionInfoW(&osvi, MA_VER_MAJORVERSION | MA_VER_MINORVERSION | MA_VER_SERVICEPACKMAJOR, _VerSetConditionMask(_VerSetConditionMask(_VerSetConditionMask(0, MA_VER_MAJORVERSION, MA_VER_GREATER_EQUAL), MA_VER_MINORVERSION, MA_VER_GREATER_EQUAL), MA_VER_SERVICEPACKMAJOR, MA_VER_GREATER_EQUAL))) {
             result = MA_SUCCESS;
         } else {
             result = MA_NO_BACKEND;
@@ -28913,7 +28930,7 @@ ma_uint64 ma_src_read_deinterleaved__linear(ma_src* pSRC, ma_uint64 frameCount,
 
         /* Read Input Data */
         tBeg = pSRC->linear.timeIn;
-        tEnd = tBeg + (framesToRead*factor);
+        tEnd = tBeg + ((ma_int64)framesToRead*factor); /* Cast to int64 required for VC6. */
 
         framesToReadFromClient = (ma_uint32)(tEnd) + 1 + 1;   /* +1 to make tEnd 1-based and +1 because we always need to an extra sample for interpolation. */
         if (framesToReadFromClient >= maxFrameCountPerChunkIn) {
@@ -29540,7 +29557,7 @@ ma_uint64 ma_src_read_deinterleaved__sinc(ma_src* pSRC, ma_uint64 frameCount, vo
 
         prevWindowPosInSamples = pSRC->sinc.windowPosInSamples;
 
-        pSRC->sinc.timeIn            += (outputFramesToRead * factor);
+        pSRC->sinc.timeIn            += ((ma_int64)outputFramesToRead * factor); /* Cast to int64 required for VC6. */
         pSRC->sinc.windowPosInSamples = (ma_uint32)pSRC->sinc.timeIn;
         pSRC->sinc.inputFrameCount   -= pSRC->sinc.windowPosInSamples - prevWindowPosInSamples;
 
@@ -32775,7 +32792,7 @@ ma_uint64 ma_sine_wave_read_f32_ex(ma_sine_wave* pSineWave, ma_uint64 frameCount
             }
         }
     } else {
-        pSineWave->time += pSineWave->delta * frameCount;
+        pSineWave->time += pSineWave->delta * (ma_int64)frameCount; /* Cast to int64 required for VC6. */
     }
 
     return frameCount;