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Update dr_flac.

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This commit is contained in:
David Reid
2020-08-14 18:50:22 +10:00
parent 6d1a1ccd05
commit 1f97a8138b
2 changed files with 42 additions and 21 deletions
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extras/dr_flac.h
+32 -11
View File
@@ -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 - v0.12.17 - 2020-08-02
dr_flac - v0.12.18 - 2020-08-14
David Reid - mackron@gmail.com
@@ -232,7 +232,7 @@ extern "C" {
#define DRFLAC_VERSION_MAJOR 0
#define DRFLAC_VERSION_MINOR 12
#define DRFLAC_VERSION_REVISION 17
#define DRFLAC_VERSION_REVISION 18
#define DRFLAC_VERSION_STRING DRFLAC_XSTRINGIFY(DRFLAC_VERSION_MAJOR) "." DRFLAC_XSTRINGIFY(DRFLAC_VERSION_MINOR) "." DRFLAC_XSTRINGIFY(DRFLAC_VERSION_REVISION)
#include <stddef.h> /* For size_t. */
@@ -1518,7 +1518,7 @@ static DRFLAC_INLINE drflac_bool32 drflac_has_sse41(void)
}
#if defined(_MSC_VER) && _MSC_VER >= 1500 && (defined(DRFLAC_X86) || defined(DRFLAC_X64))
#if defined(_MSC_VER) && _MSC_VER >= 1500 && (defined(DRFLAC_X86) || defined(DRFLAC_X64)) && !defined(__clang__)
#define DRFLAC_HAS_LZCNT_INTRINSIC
#elif (defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)))
#define DRFLAC_HAS_LZCNT_INTRINSIC
@@ -1530,7 +1530,7 @@ static DRFLAC_INLINE drflac_bool32 drflac_has_sse41(void)
#endif
#endif
#if defined(_MSC_VER) && _MSC_VER >= 1400
#if defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(__clang__)
#define DRFLAC_HAS_BYTESWAP16_INTRINSIC
#define DRFLAC_HAS_BYTESWAP32_INTRINSIC
#define DRFLAC_HAS_BYTESWAP64_INTRINSIC
@@ -1773,7 +1773,7 @@ static DRFLAC_INLINE drflac_bool32 drflac__is_little_endian(void)
static DRFLAC_INLINE drflac_uint16 drflac__swap_endian_uint16(drflac_uint16 n)
{
#ifdef DRFLAC_HAS_BYTESWAP16_INTRINSIC
#if defined(_MSC_VER)
#if defined(_MSC_VER) && !defined(__clang__)
return _byteswap_ushort(n);
#elif defined(__GNUC__) || defined(__clang__)
return __builtin_bswap16(n);
@@ -1789,7 +1789,7 @@ static DRFLAC_INLINE drflac_uint16 drflac__swap_endian_uint16(drflac_uint16 n)
static DRFLAC_INLINE drflac_uint32 drflac__swap_endian_uint32(drflac_uint32 n)
{
#ifdef DRFLAC_HAS_BYTESWAP32_INTRINSIC
#if defined(_MSC_VER)
#if defined(_MSC_VER) && !defined(__clang__)
return _byteswap_ulong(n);
#elif defined(__GNUC__) || defined(__clang__)
#if defined(DRFLAC_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 6) && !defined(DRFLAC_64BIT) /* <-- 64-bit inline assembly has not been tested, so disabling for now. */
@@ -1820,7 +1820,7 @@ static DRFLAC_INLINE drflac_uint32 drflac__swap_endian_uint32(drflac_uint32 n)
static DRFLAC_INLINE drflac_uint64 drflac__swap_endian_uint64(drflac_uint64 n)
{
#ifdef DRFLAC_HAS_BYTESWAP64_INTRINSIC
#if defined(_MSC_VER)
#if defined(_MSC_VER) && !defined(__clang__)
return _byteswap_uint64(n);
#elif defined(__GNUC__) || defined(__clang__)
return __builtin_bswap64(n);
@@ -2624,7 +2624,7 @@ static drflac_bool32 drflac__find_and_seek_to_next_sync_code(drflac_bs* bs)
#if defined(DRFLAC_HAS_LZCNT_INTRINSIC)
#define DRFLAC_IMPLEMENT_CLZ_LZCNT
#endif
#if defined(_MSC_VER) && _MSC_VER >= 1400 && (defined(DRFLAC_X64) || defined(DRFLAC_X86))
#if defined(_MSC_VER) && _MSC_VER >= 1400 && (defined(DRFLAC_X64) || defined(DRFLAC_X86)) && !defined(__clang__)
#define DRFLAC_IMPLEMENT_CLZ_MSVC
#endif
@@ -2679,7 +2679,25 @@ static DRFLAC_INLINE drflac_bool32 drflac__is_lzcnt_supported(void)
static DRFLAC_INLINE drflac_uint32 drflac__clz_lzcnt(drflac_cache_t x)
{
#if defined(_MSC_VER) && !defined(__clang__)
/*
It's critical for competitive decoding performance that this function be highly optimal. With MSVC we can use the __lzcnt64() and __lzcnt() intrinsics
to achieve good performance, however on GCC and Clang it's a little bit more annoying. The __builtin_clzl() and __builtin_clzll() intrinsics leave
it undefined as to the return value when `x` is 0. We need this to be well defined as returning 32 or 64, depending on whether or not it's a 32- or
64-bit build. To work around this we would need to add a conditional to check for the x = 0 case, but this creates unnecessary inefficiency. To work
around this problem I have written some inline assembly to emit the LZCNT (x86) or CLZ (ARM) instruction directly which removes the need to include
the conditional. This has worked well in the past, but for some reason Clang's MSVC compatible driver, clang-cl, does not seem to be handling this
in the same way as the normal Clang driver. It seems that `clang-cl` is just outputting the wrong results sometimes, maybe due to some register
getting clobbered?
I'm not sure if this is a bug with dr_flac's inlined assembly (most likely), a bug in `clang-cl` or just a misunderstanding on my part with inline
assembly rules for `clang-cl`. If somebody can identify an error in dr_flac's inlined assembly I'm happy to get that fixed.
Fortunately there is an easy workaround for this. Clang implements MSVC-specific intrinsics for compatibility. It also defines _MSC_VER for extra
compatibility. We can therefore just check for _MSC_VER and use the MSVC intrinsic which, fortunately for us, Clang supports. It would still be nice
to know how to fix the inlined assembly for correctness sake, however.
*/
#if defined(_MSC_VER) /*&& !defined(__clang__)*/ /* <-- Intentionally wanting Clang to use the MSVC __lzcnt64/__lzcnt intrinsics due to above ^. */
#ifdef DRFLAC_64BIT
return (drflac_uint32)__lzcnt64(x);
#else
@@ -2691,7 +2709,7 @@ static DRFLAC_INLINE drflac_uint32 drflac__clz_lzcnt(drflac_cache_t x)
{
drflac_uint64 r;
__asm__ __volatile__ (
"lzcnt{ %1, %0| %0, %1}" : "=r"(r) : "r"(x)
"lzcnt{ %1, %0| %0, %1}" : "=r"(r) : "r"(x) : "cc"
);
return (drflac_uint32)r;
@@ -2700,7 +2718,7 @@ static DRFLAC_INLINE drflac_uint32 drflac__clz_lzcnt(drflac_cache_t x)
{
drflac_uint32 r;
__asm__ __volatile__ (
"lzcnt{l %1, %0| %0, %1}" : "=r"(r) : "r"(x)
"lzcnt{l %1, %0| %0, %1}" : "=r"(r) : "r"(x) : "cc"
);
return r;
@@ -11751,6 +11769,9 @@ DRFLAC_API drflac_bool32 drflac_next_cuesheet_track(drflac_cuesheet_track_iterat
/*
REVISION HISTORY
================
v0.12.18 - 2020-08-14
- Fix a crash when compiling with clang-cl.
v0.12.17 - 2020-08-02
- Simplify sized types.
miniaudio.h
+10 -10
View File
@@ -42914,7 +42914,7 @@ extern "C" {
#define DRFLAC_XSTRINGIFY(x) DRFLAC_STRINGIFY(x)
#define DRFLAC_VERSION_MAJOR 0
#define DRFLAC_VERSION_MINOR 12
#define DRFLAC_VERSION_REVISION 17
#define DRFLAC_VERSION_REVISION 18
#define DRFLAC_VERSION_STRING DRFLAC_XSTRINGIFY(DRFLAC_VERSION_MAJOR) "." DRFLAC_XSTRINGIFY(DRFLAC_VERSION_MINOR) "." DRFLAC_XSTRINGIFY(DRFLAC_VERSION_REVISION)
#include <stddef.h>
typedef signed char drflac_int8;
@@ -50929,7 +50929,7 @@ static DRFLAC_INLINE drflac_bool32 drflac_has_sse41(void)
return DRFLAC_FALSE;
#endif
}
#if defined(_MSC_VER) && _MSC_VER >= 1500 && (defined(DRFLAC_X86) || defined(DRFLAC_X64))
#if defined(_MSC_VER) && _MSC_VER >= 1500 && (defined(DRFLAC_X86) || defined(DRFLAC_X64)) && !defined(__clang__)
#define DRFLAC_HAS_LZCNT_INTRINSIC
#elif (defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)))
#define DRFLAC_HAS_LZCNT_INTRINSIC
@@ -50940,7 +50940,7 @@ static DRFLAC_INLINE drflac_bool32 drflac_has_sse41(void)
#endif
#endif
#endif
#if defined(_MSC_VER) && _MSC_VER >= 1400
#if defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(__clang__)
#define DRFLAC_HAS_BYTESWAP16_INTRINSIC
#define DRFLAC_HAS_BYTESWAP32_INTRINSIC
#define DRFLAC_HAS_BYTESWAP64_INTRINSIC
@@ -51141,7 +51141,7 @@ static DRFLAC_INLINE drflac_bool32 drflac__is_little_endian(void)
static DRFLAC_INLINE drflac_uint16 drflac__swap_endian_uint16(drflac_uint16 n)
{
#ifdef DRFLAC_HAS_BYTESWAP16_INTRINSIC
#if defined(_MSC_VER)
#if defined(_MSC_VER) && !defined(__clang__)
return _byteswap_ushort(n);
#elif defined(__GNUC__) || defined(__clang__)
return __builtin_bswap16(n);
@@ -51156,7 +51156,7 @@ static DRFLAC_INLINE drflac_uint16 drflac__swap_endian_uint16(drflac_uint16 n)
static DRFLAC_INLINE drflac_uint32 drflac__swap_endian_uint32(drflac_uint32 n)
{
#ifdef DRFLAC_HAS_BYTESWAP32_INTRINSIC
#if defined(_MSC_VER)
#if defined(_MSC_VER) && !defined(__clang__)
return _byteswap_ulong(n);
#elif defined(__GNUC__) || defined(__clang__)
#if defined(DRFLAC_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 6) && !defined(DRFLAC_64BIT)
@@ -51185,7 +51185,7 @@ static DRFLAC_INLINE drflac_uint32 drflac__swap_endian_uint32(drflac_uint32 n)
static DRFLAC_INLINE drflac_uint64 drflac__swap_endian_uint64(drflac_uint64 n)
{
#ifdef DRFLAC_HAS_BYTESWAP64_INTRINSIC
#if defined(_MSC_VER)
#if defined(_MSC_VER) && !defined(__clang__)
return _byteswap_uint64(n);
#elif defined(__GNUC__) || defined(__clang__)
return __builtin_bswap64(n);
@@ -51801,7 +51801,7 @@ static drflac_bool32 drflac__find_and_seek_to_next_sync_code(drflac_bs* bs)
#if defined(DRFLAC_HAS_LZCNT_INTRINSIC)
#define DRFLAC_IMPLEMENT_CLZ_LZCNT
#endif
#if defined(_MSC_VER) && _MSC_VER >= 1400 && (defined(DRFLAC_X64) || defined(DRFLAC_X86))
#if defined(_MSC_VER) && _MSC_VER >= 1400 && (defined(DRFLAC_X64) || defined(DRFLAC_X86)) && !defined(__clang__)
#define DRFLAC_IMPLEMENT_CLZ_MSVC
#endif
static DRFLAC_INLINE drflac_uint32 drflac__clz_software(drflac_cache_t x)
@@ -51848,7 +51848,7 @@ static DRFLAC_INLINE drflac_bool32 drflac__is_lzcnt_supported(void)
}
static DRFLAC_INLINE drflac_uint32 drflac__clz_lzcnt(drflac_cache_t x)
{
#if defined(_MSC_VER) && !defined(__clang__)
#if defined(_MSC_VER)
#ifdef DRFLAC_64BIT
return (drflac_uint32)__lzcnt64(x);
#else
@@ -51860,7 +51860,7 @@ static DRFLAC_INLINE drflac_uint32 drflac__clz_lzcnt(drflac_cache_t x)
{
drflac_uint64 r;
__asm__ __volatile__ (
"lzcnt{ %1, %0| %0, %1}" : "=r"(r) : "r"(x)
"lzcnt{ %1, %0| %0, %1}" : "=r"(r) : "r"(x) : "cc"
);
return (drflac_uint32)r;
}
@@ -51868,7 +51868,7 @@ static DRFLAC_INLINE drflac_uint32 drflac__clz_lzcnt(drflac_cache_t x)
{
drflac_uint32 r;
__asm__ __volatile__ (
"lzcnt{l %1, %0| %0, %1}" : "=r"(r) : "r"(x)
"lzcnt{l %1, %0| %0, %1}" : "=r"(r) : "r"(x) : "cc"
);
return r;
}