shithub: mp3dec

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Add MINIMP3_NO_SIMD configuration macro

--- a/README.md

+++ b/README.md

@@ -69,6 +69,7 @@

 ```

 //#define MINIMP3_ONLY_MP3

 //#define MINIMP3_ONLY_SIMD

+//#define MINIMP3_NO_SIMD

 //#define MINIMP3_NONSTANDARD_BUT_LOGICAL

 #define MINIMP3_IMPLEMENTATION

 #include "minimp3.h"

@@ -81,6 +82,7 @@

 You can ``#include`` ``minimp3.h`` in as many files as you like.

 Also you can use ``MINIMP3_ONLY_MP3`` define to strip MP1/MP2 decoding code.

 MINIMP3_ONLY_SIMD define controls generic (non SSE/NEON) code generation (always enabled on x64/arm64 targets).

+In case you do not want any platform-specific SIMD optimizations, you can define ``MINIMP3_NO_SIMD``.

 MINIMP3_NONSTANDARD_BUT_LOGICAL define saves some code bytes, and enforces non-stadnard but logical behaviour of mono-stereo transition (rare case).

 Then. we decode the input stream frame-by-frame:

--- a/minimp3.h

+++ b/minimp3.h

@@ -80,6 +80,8 @@

 #define MINIMP3_MIN(a, b)           ((a) > (b) ? (b) : (a))

 #define MINIMP3_MAX(a, b)           ((a) < (b) ? (b) : (a))

+#if !defined(MINIMP3_NO_SIMD)

+

 #if !defined(MINIMP3_ONLY_SIMD) && (defined(_M_X64) || defined(_M_ARM64) || defined(__x86_64__) || defined(__aarch64__))

 /* x64 always have SSE2, arm64 always have neon, no need for generic code */

 #define MINIMP3_ONLY_SIMD

@@ -179,6 +181,12 @@

 #ifdef MINIMP3_ONLY_SIMD

 #error MINIMP3_ONLY_SIMD used, but SSE/NEON not enabled

 #endif

+#endif

+

+#else

+

+#define HAVE_SIMD 0

+

 #endif

 typedef struct