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audio: always build fallback scalar converters

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This commit is contained in:
Anonymous Maarten
2024-02-23 23:51:49 +01:00
committed by Sam Lantinga
parent 89b135e570
commit 64465653b4
1 changed files with 2 additions and 21 deletions
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23
src/audio/SDL_audiotypecvt.c
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@@ -25,26 +25,9 @@
// TODO: NEON is disabled until https://github.com/libsdl-org/SDL/issues/8352 can be fixed
#undef SDL_NEON_INTRINSICS
#ifndef SDL_PLATFORM_EMSCRIPTEN
#if defined(__x86_64__) && defined(SDL_SSE2_INTRINSICS)
#define NEED_SCALAR_CONVERTER_FALLBACKS 0 // x86_64 guarantees SSE2.
#elif defined(SDL_PLATFORM_MACOS) && defined(SDL_SSE2_INTRINSICS)
#define NEED_SCALAR_CONVERTER_FALLBACKS 0 // macOS/Intel guarantees SSE2.
#elif defined(__ARM_ARCH) && (__ARM_ARCH >= 8) && defined(SDL_NEON_INTRINSICS)
#define NEED_SCALAR_CONVERTER_FALLBACKS 0 // ARMv8+ promise NEON.
#elif defined(SDL_PLATFORM_APPLE) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7) && defined(SDL_NEON_INTRINSICS)
#define NEED_SCALAR_CONVERTER_FALLBACKS 0 // All Apple ARMv7 chips promise NEON support.
#endif
#endif /* SDL_PLATFORM_EMSCRIPTEN */
// Set to zero if platform is guaranteed to use a SIMD codepath here.
#if !defined(NEED_SCALAR_CONVERTER_FALLBACKS)
#define NEED_SCALAR_CONVERTER_FALLBACKS 1
#endif
#define DIVBY2147483648 0.0000000004656612873077392578125f // 0x1p-31f
#if NEED_SCALAR_CONVERTER_FALLBACKS
// start fallback scalar converters
// This code requires that floats are in the IEEE-754 binary32 format
SDL_COMPILE_TIME_ASSERT(float_bits, sizeof(float) == sizeof(Uint32));
@@ -201,7 +184,7 @@ static void SDL_Convert_F32_to_S32_Scalar(Sint32 *dst, const float *src, int num
#undef SIGNMASK
#endif // NEED_SCALAR_CONVERTER_FALLBACKS
// end fallback scalar converters
#ifdef SDL_SSE2_INTRINSICS
static void SDL_TARGETING("sse2") SDL_Convert_S8_to_F32_SSE2(float *dst, const Sint8 *src, int num_samples)
@@ -999,9 +982,7 @@ void SDL_ChooseAudioConverters(void)
}
#endif
#if NEED_SCALAR_CONVERTER_FALLBACKS
SET_CONVERTER_FUNCS(Scalar);
#endif
#undef SET_CONVERTER_FUNCS